An oxygen sensor device

Abstract

The utility model relates to oxygen sensor technical field especially relates to an oxygen sensor device. Oxygen sensor device includes by pedestal, outer electrode steel pipe, insulating bakelite, big porcelain pipe and inner electrode porcelain pipe constitute oxygen sensor main part, the protective cover is screwed on the pedestal and will be outer electrode steel pipe cover set in, and the inner chamber of protective cover is equipped with the carbon scraping subassembly for removing the carbon deposition of outer electrode steel pipe outer wall, carbon scraping subassembly includes guide rod, and guide rod is equipped with several, several guide rods are installed in the inner chamber of protective cover, and the both ends of several guide rods are fixedly installed with through electromagnet a and through electromagnet b respectively, and the between through electromagnet a and through electromagnet b of several guide rods is commonly slidably installed with scraping piece, and scraping piece and through electromagnet a and through electromagnet b are all magnetic suction cooperation, and one end of protective cover is equipped with the connecting flange. The oxygen sensor device provided by the utility model has the advantages that carbon deposition is convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of oxygen sensor technology, and in particular to an oxygen sensor device. Background Technology

[0002] An oxygen sensor is a device that monitors oxygen concentration in real time using electrochemical principles. It is widely used in industries such as manufacturing, automotive, and medical fields. The oxygen sensor converts oxygen concentration into an electrical or digital signal through an electrochemical reaction, which is used to measure the oxygen content in air, water, and gas mixtures. Its working principle is based on electrochemical principles, typically using zirconia ceramic as the sensing element, with a surface plated with precious metals such as platinum. Current is generated through the redox reaction between oxygen and electrodes. In automobiles, the sensor measures the change in oxygen potential in the exhaust pipe and feeds it back to the engine control unit to adjust the air-fuel ratio.

[0003] Excessive carbon black deposition is the most important reason for oxygen sensor rework during use. Carbon black deposition will cause distortion or fluctuation in the output signal of the oxygen sensor. Currently, carbon deposits on oxygen sensors are usually treated by carbon burning (air is connected to the carbon burning air interface and air is maintained at a certain flow rate and time). However, this carbon burning method does not completely remove the carbon deposits adhering to the outer wall of the external electrode tube, thus affecting the detection accuracy of the oxygen sensor.

[0004] Therefore, it is necessary to provide a new oxygen sensor device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an oxygen sensor device.

[0006] The oxygen sensor device provided by this utility model includes: an oxygen sensor body composed of a base, an outer electrode steel tube, an insulating bakelite, a large ceramic tube, and an inner electrode ceramic tube;

[0007] A protective cover is threaded onto the base and houses the outer electrode steel pipe. The inner cavity of the protective cover contains a carbon scraping assembly for removing carbon deposits from the outer wall of the outer electrode steel pipe. The carbon scraping assembly includes several guide rods, each installed within the inner cavity of the protective cover. Electromagnets a and b are fixedly mounted at both ends of each guide rod. A scraping component is slidably mounted on each guide rod between electromagnets a and b, and the scraping component is magnetically attracted to both electromagnets a and b. One end of the protective cover has a connecting flange, on which a power controller is mounted via a bracket. The power controller is electrically connected to electromagnets a and b.

[0008] Preferably, the scraping component includes an intermediate slip ring, which is slidably mounted on several guide rods. Both ends of the intermediate slip ring are fixed with iron plates by screws. A circular ring is rotatably mounted on the inner side of the intermediate slip ring, and several wire brushes are evenly mounted on the inner sidewall of the circular ring.

[0009] Preferably, the iron sheet has a through hole through which the guide rod passes.

[0010] Preferably, a detection hole is provided on one side of the bottom end of the external electrode steel tube.

[0011] Preferably, the bottom outer wall of the protective cover has a plurality of air guide holes evenly distributed.

[0012] Preferably, the outer electrode steel tube is installed at one end of the base, the insulating bakelite is embedded in the base, the large ceramic tube is fixedly installed on the insulating bakelite, the inner electrode ceramic tube is embedded in the large ceramic tube, a zirconium ball is installed at the bottom end of the large ceramic tube, and a junction box electrically connected to the outer electrode steel tube and the inner electrode ceramic tube is installed at one end of the base.

[0013] Preferably, the base is also connected to a charcoal burner and a reference burner.

[0014] Compared with related technologies, the oxygen sensor device provided by this utility model has the following advantages:

[0015] This utility model provides an oxygen sensor device. By setting a carbon scraping assembly on the outer electrode steel tube on the base, the carbon scraping assembly utilizes the cooperation of a guide rod, electromagnet a, electromagnet b, scraper, intermediate slip ring, iron sheet, ring, wire brush and power controller to efficiently scrape and clean the carbon deposits accumulated on the outer electrode steel tube. The cleaning process does not require disassembling the oxygen sensor. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the oxygen sensor device provided by this utility model;

[0017] Figure 2 A schematic diagram of the axial cross-section of the oxygen sensor device provided by this utility model;

[0018] Figure 3 A schematic diagram of the structure of the oxygen sensor body provided by this utility model;

[0019] Figure 4 A schematic diagram of the carbon scraping assembly provided by this utility model;

[0020] Figure 5 This is an exploded structural diagram of the scraping component provided by this utility model.

[0021] The following are the labeling elements in the diagram: 101, Base; 102, Outer Electrode Steel Tube; 112, Detection Hole; 103, Insulating Bakelite; 104, Large Ceramic Tube; 105, Inner Electrode Ceramic Tube; 106, Zirconium Ball; 107, Junction Box; 108, Carbon Burning Nozzle; 109, Reference Nozzle; 200, Protective Cover; 201, Connecting Flange; 202, Air Guide Hole; 300, Carbon Scraping Assembly; 301, Guide Rod; 302, Electromagnet a; 303, Electromagnet b; 304, Scraping Component; 314, Intermediate Slip Ring; 324, Iron Sheet; 334, Circular Ring; 344, Steel Wire Brush; 305, Power Controller. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 5 This utility model provides an oxygen sensor device, which includes:

[0025] The oxygen sensor body consists of a base 101, an outer electrode steel tube 102, an insulating bakelite 103, a large ceramic tube 104, and an inner electrode ceramic tube 105.

[0026] A protective cover 200 is threaded onto the base 101 and encloses the outer electrode steel tube 102. The inner cavity of the protective cover 200 is equipped with a carbon scraping assembly 300 for removing carbon deposits from the outer wall of the outer electrode steel tube 102. The carbon scraping assembly 300 includes several guide rods 301, which are installed within the inner cavity of the protective cover 200. Each end of one of the guide rods 301 is fixedly fitted with an electromagnet a302 and an electromagnet a402. Iron b303, and a scraper 304 is slidably mounted on several guide rods 301 between electromagnets a302 and b303. The scraper 304 is magnetically attracted to electromagnets a302 and b303. One end of the protective cover 200 is provided with a connecting flange 201. A power controller 305 is mounted on the connecting flange 201 via a bracket. The power controller 305 is electrically connected to electromagnets a302 and b303.

[0027] It should be noted that during use, the entire device is installed on the boiler wall using the connecting flange 201 of the protective cover 200. Then, the oxygen sensor body is connected to the external upper control device for use. During routine maintenance of the oxygen sensor, after carbon burning, the electromagnets a302 and b303 are alternately energized using the power controller 305. During the alternating energization, the alternating adsorption scraper 304 moves back and forth along several guide rods 301 within the protective cover 200. During the movement, the scraper 304 scrapes off the carbon deposits adhering to the outer wall of the outer electrode steel pipe 102, thereby improving the efficiency of carbon removal during oxygen sensor maintenance.

[0028] The protective cover 200 has several air guide holes 202 evenly distributed on the outer side wall at the bottom end. This allows the gas to be conducted through the air guide holes 202 after the protective cover 200 wraps around the outer electrode steel tube 102, which is convenient for oxygen detection.

[0029] In the embodiments of this utility model, please refer to Figures 1 to 5 The scraping component 304 includes an intermediate slip ring 314, which is slidably mounted on a plurality of guide rods 301. Both ends of the intermediate slip ring 314 are fixedly mounted with iron plates 324 by screws. A circular ring 334 is rotatably mounted on the inner side of the intermediate slip ring 314. A plurality of steel wire brushes 344 are evenly mounted on the inner sidewall of the circular ring 334.

[0030] The iron sheet 324 has a through hole through which the guide rod 301 passes.

[0031] It should be noted that when the scraper 304 is in use, when the electromagnet a302 is energized, the strong magnetic force attracts the iron piece 324, causing the intermediate slip ring 314 to slide along the guide rod 301 toward the electromagnet a302. Then, while controlling the electromagnet a302 to be de-energized, the electromagnet b303 is energized, thereby attracting the iron piece 324 and causing the intermediate slip ring 314 to slide along the guide rod 301 toward the electromagnet b303. Then, the electromagnet b303 is de-energized and the electromagnet a302 is energized, thereby realizing the reciprocating movement of the intermediate slip ring 314 along the guide rod 301. The steel wire brush 344 that falls off during sliding cleans the carbon deposits adhering to the outer wall of the outer electrode steel tube 102, thereby improving the detection accuracy of the oxygen sensor in the later stage.

[0032] In the embodiments of this utility model, please refer to Figures 1 to 5The outer electrode steel tube 102 is installed at one end of the base 101, the insulating bakelite 103 is embedded in the base 101, the large ceramic tube 104 is fixedly installed on the insulating bakelite 103, the inner electrode ceramic tube 105 is embedded in the large ceramic tube 104, a zirconium ball 106 is installed at the bottom end of the large ceramic tube 104, a junction box 107 electrically connected to the outer electrode steel tube 102 and the inner electrode ceramic tube 105 is installed at one end of the base 101, and a charcoal burner 108 and a reference burner 109 are also connected to the base 101.

[0033] A detection hole 112 is provided on one side of the bottom end of the external electrode steel tube 102.

[0034] It should be noted that: This oxygen sensor body uses the detection hole 112 for gas flow, and uses the zirconium ball 106 and the inner electrode ceramic tube 105 to detect the oxygen concentration. (When the oxygen concentration inside and outside the zirconium tube is different, oxygen ions will move from the high concentration side (atmosphere) to the low concentration side (exhaust gas); due to the catalytic effect of the platinum electrode, this process will generate an electromotive force (voltage) between the two electrodes; the magnitude of the voltage directly depends on the oxygen concentration difference on both sides. The specific working principle is the same as the detection principle of the existing zirconium dioxide oxygen sensor. The carbon burning nozzle 108 and the reference nozzle 109 are used for guiding the carbon burning gas and setting the reference gas.)

[0035] The working principle of the oxygen sensor device provided by this utility model is as follows:

[0036] When in use, the entire device is installed on the boiler wall using the connecting flange 201 of the protective cover 200. Then, the oxygen sensor body is connected to the external upper control device and then used. When performing daily maintenance on the oxygen sensor, after carbon burning, the power controller 305 is used to control the electromagnets a302 and b303 to be energized alternately.

[0037] When electromagnet a302 is energized, the strong magnetic force attracts the iron piece 324, causing the intermediate slip ring 314 to slide along the guide rod 301 toward electromagnet a302. Then, while controlling electromagnet a302 to be de-energized, electromagnet b303 is energized, thereby attracting the iron piece 324 and causing the intermediate slip ring 314 to slide along the guide rod 301 toward electromagnet b303. Then, controlling electromagnet b303 to be de-energized and electromagnet a302 to be energized, the intermediate slip ring 314 reciprocates along the guide rod 301. The steel wire brush 344 that falls off during sliding cleans the carbon deposits adhering to the outer wall of the outer electrode steel tube 102, thereby improving the detection accuracy of the oxygen sensor in the later stage.

[0038] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An oxygen sensor device, comprising: The oxygen sensor body consists of a base (101), an outer electrode steel tube (102), an insulating bakelite tube (103), a large ceramic tube (104), and an inner electrode ceramic tube (105); Its characteristic is that it further includes: A protective cover (200) is threaded onto the base (101) and encloses the outer electrode steel tube (102) inside. The inner cavity of the protective cover (200) is equipped with a carbon scraping assembly (300) for removing carbon deposits from the outer wall of the outer electrode steel tube (102). The carbon scraping assembly (300) includes guide rods (301), and several guide rods (301) are provided. Several guide rods (301) are installed in the inner cavity of the protective cover (200), and electromagnets a (302) and b are respectively fixedly installed at both ends of the several guide rods (301). (303), and a scraper (304) is slidably mounted on several of the guide rods (301) between electromagnets a (302) and b (303). The scraper (304) is magnetically attracted to electromagnets a (302) and b (303). One end of the protective cover (200) is provided with a connecting flange (201). A power controller (305) is mounted on the connecting flange (201) via a bracket. The power controller (305) is electrically connected to electromagnets a (302) and b (303).

2. The oxygen sensor device according to claim 1, characterized in that, The scraping component (304) includes an intermediate slip ring (314), which is slidably mounted on a plurality of guide rods (301). Both ends of the intermediate slip ring (314) are fixedly mounted with iron plates (324) by screws. A circular ring (334) is rotatably mounted on the inner side of the intermediate slip ring (314), and a plurality of wire brushes (344) are evenly mounted on the inner sidewall of the circular ring (334).

3. The oxygen sensor device according to claim 2, characterized in that, The iron sheet (324) has a through hole through which the guide rod (301) passes.

4. The oxygen sensor device according to claim 1, characterized in that, A detection hole (112) is provided on one side of the bottom end of the external electrode steel tube (102).

5. The oxygen sensor device according to claim 1, characterized in that, The bottom outer wall of the protective cover (200) is evenly provided with a number of air guide holes (202).

6. The oxygen sensor device according to claim 1, characterized in that, The outer electrode steel tube (102) is installed at one end of the base (101), the insulating bakelite (103) is embedded in the base (101), the large ceramic tube (104) is fixedly installed on the insulating bakelite (103), the inner electrode ceramic tube (105) is embedded in the large ceramic tube (104), a zirconium ball (106) is installed at the bottom end of the large ceramic tube (104), and a junction box (107) electrically connected to the outer electrode steel tube (102) and the inner electrode ceramic tube (105) is installed at one end of the base (101).

7. The oxygen sensor device according to claim 6, characterized in that, The base (101) is also connected to a charcoal burner (108) and a reference burner (109).

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