Oxygen sensor combustion test bench

Abstract

The utility model belongs to the technical field of instrument testing equipment, and discloses an oxygen sensor combustion test board which comprises a main body, a gas storage tank is arranged in a first placement cabinet, a connecting pipe is arranged on the side, penetrating through the main body and extending to the outer wall of the main body, of the output end of the gas storage tank, and a test box is arranged on the upper surface of the main body; a gas outlet pipe is arranged on the upper side of the testing box, a communicating pipe is arranged on the outer side of the filtering tank, a filtering net is arranged in the filtering tank, and the other end of the communicating pipe is fixedly connected with a purifier. The waste gas subjected to the combustion test can be adsorbed and purified through the activated carbon in the filter screen, and then the waste gas is doubly absorbed through the purifier, so that the waste gas directly discharged out of the testing device is reduced to a certain extent, and the influence of the combustion waste gas on the environment is reduced.

Description

Technical Field

[0001] This application relates to the field of instrument testing equipment technology, and more specifically, to an oxygen sensor combustion test bench. Background Technology

[0002] The function of the oxygen sensor is to detect the oxygen concentration in the exhaust gas, ensuring that the three-way catalytic converter has the maximum conversion efficiency for the three pollutants in the exhaust gas: hydrocarbons, carbon monoxide, and nitrogen oxides, and to maximize the conversion and purification of the pollutants emitted. One method to test the functionality of the oxygen sensor is to use combustion detection to observe the combustibility of the gas passing through the oxygen sensor to determine whether the sensor has malfunctioned.

[0003] Currently available oxygen sensor combustion testing devices lack exhaust gas treatment and accidental combustion prevention mechanisms. For example, Chinese patent (authorization announcement number CN216717813U) discloses a semi-enclosed combustion testing chamber for an oxygen sensor combustion testing bench, comprising a combustion chamber, a heat dissipation chamber, and a testing chamber. One end of the combustion chamber is connected to one end of the heat dissipation chamber via a tapered connecting pipe, and the other end of the heat dissipation chamber is connected to the testing chamber. An air inlet is located at the other end of the combustion chamber. The diameter of the heat dissipation chamber is the same as the diameter of the testing chamber. An air inlet pipe, an ignition device, and a swirl burner are installed within the combustion chamber. The air inlet communicates with the air inlet pipe, and an ignition device is located at the end of the air inlet pipe furthest from the air inlet. This invention enables stable combustion in the combustion zone of the combustion chamber and generates a large flow of exhaust gas, simulating automotive engine combustion exhaust gas. It allows for rapid switching of the simulated atmosphere, automatic ignition of the combustion chamber, and enables the oxygen sensor combustion testing bench to efficiently measure the electrical performance of the oxygen sensor.

[0004] Regarding the aforementioned technologies, the inventors believe that a large amount of combustion exhaust gas is generated when simulating the combustion of automobile engine exhaust gas. Directly discharging the combustion exhaust gas outside the testing device without treatment will affect the environment and may even harm the experimental personnel. At the same time, there is a possibility of fire during the combustion test, which poses certain safety hazards. Utility Model Content

[0005] To address the aforementioned issues, this application provides an oxygen sensor combustion test bench.

[0006] The oxygen sensor combustion test bench provided in this application adopts the following technical solution:

[0007] An oxygen sensor combustion test bench includes a main body. Inside the main body are a first placement cabinet and a second placement cabinet. The first placement cabinet contains a gas storage tank. The output end of the gas storage tank extends through the main body to one side of its outer wall and is connected to a connecting pipe. A test chamber is mounted on the upper surface of the main body. A filter tank also has a water tank. The second placement cabinet contains a water storage tank. The output end of the water storage tank is fixedly connected to a water outlet pipe. An air outlet pipe is mounted on the upper side of the test chamber. A connecting pipe is mounted on the outer side of the filter tank. A filter screen is installed inside the filter tank. A conduit is fixedly connected to the outer side of the filter screen. A purifier is fixedly connected to the other end of the conduit. The other end of the air outlet pipe is connected to the connecting pipe.

[0008] Furthermore, a collection groove is provided inside the main body, a rotating wheel is provided at the bottom of the main body, and a pusher is fixedly connected to the other end of the main body.

[0009] Through the above technical solution, the collection tank can collect the oxygen sensor device after the test is completed, and the push handle and wheel on the outside of the main body can be used to move the device for easy use by the experimental personnel.

[0010] Furthermore, the gas storage tank is equipped with test gas, the connecting pipe is equipped with a control valve and a viewing window, the other end of the connecting pipe is fixedly installed inside the test chamber, and the outer surface of the test chamber is equipped with a controller.

[0011] The above technical solution uses test gas in the gas storage tank to simulate automobile exhaust gas, a control valve to regulate the delivery rate of test gas in the connecting pipe, and a viewing window to allow experimenters to observe the delivery situation in the connecting pipe. The connecting pipe connects the gas storage tank and the test chamber, and can deliver the test gas in the gas storage tank to the test chamber. The controller outside the test chamber can operate the test chamber.

[0012] Furthermore, the water outlet pipe extends through the main body to the upper surface of the main body and is located directly above the water tank, and a nozzle is fixedly connected to the other end of the water outlet pipe.

[0013] With the above technical solution, if the equipment catches fire during the oxygen sensor combustion test, the fire can be extinguished by spraying liquid through the water outlet pipe, thus improving the safety of the device.

[0014] Furthermore, the filter screen is uniformly attached to the inner wall of the filter can in the shape of a can, and activated carbon is arranged inside the filter screen.

[0015] Through the above technical solution, the filter screen is set to be canister-type and can be attached to the inner wall of the filter canister. The exhaust gas after the combustion test can be adsorbed and purified by the activated carbon in the filter screen.

[0016] Furthermore, the top of the filter canister is provided with a canister cap, and the output end of the purifier is fixedly connected to an exhaust pipe, which is connected to the canister cap.

[0017] The above technical solution utilizes the canister cap at the top of the filter canister to prevent the exhaust gas after the combustion test from being directly emitted into the air. The exhaust gas, after being adsorbed by the activated carbon inside the filter screen, is then purified by the purifier to achieve a dual absorption effect, which reduces the exhaust gas directly emitted outside the testing device to a certain extent and reduces the damage to the environment caused by combustion exhaust gas.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] The test gas in the gas storage tank can simulate automobile exhaust. The connecting pipe connects the gas storage tank and the test chamber, transporting the test gas from the gas storage tank to the test chamber for combustion testing. The combustion exhaust gas generated during the experiment is transported to the connecting pipe through the exhaust pipe. After entering the connecting pipe, the exhaust gas is transported to the filter tank. The filter screen is attached to the inner wall of the filter tank. The exhaust gas after the combustion test passes through the activated carbon in the filter screen, which can adsorb and purify it. Then, the purifier achieves a dual absorption effect on the exhaust gas, which reduces the exhaust gas directly emitted outside the test device to a certain extent and reduces the damage to the environment caused by combustion exhaust gas. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of an oxygen sensor combustion test bench;

[0021] Figure 2 This is a schematic diagram of the internal structure of the filter tank in this application;

[0022] Figure 3 This is a top view of the internal structure of the filter tank in this application.

[0023] Explanation of the labels in the diagram:

[0024] 1. Main body; 2. First placement cabinet; 3. Second placement cabinet; 4. Gas storage tank; 5. Connecting pipe; 6. Test box; 7. Filter tank; 8. Water tank; 9. Second placement cabinet; 10. Water outlet pipe; 11. Gas outlet pipe; 12. Connecting pipe; 13. Filter screen; 14. Conduit; 15. Purifier; 16. Collection tank; 17. Exhaust pipe. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Example 1:

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] This application discloses an oxygen sensor combustion test bench. Please refer to [link / reference]. Figure 1 The system includes a main body 1, inside which are a first placement cabinet 2 and a second placement cabinet 3. Inside the first placement cabinet 2 is a gas storage tank 4. The output end of the gas storage tank 4 extends through the main body 1 to one side of the outer wall of the main body 1 and is connected by a connecting pipe 5. On the upper surface of the main body 1 is a test chamber 6. A filter tank 7 is also provided with a water tank 8. Inside the second placement cabinet 3 is a water storage tank 9. The output end of the water storage tank 9 is fixedly connected to a water outlet pipe 10. On the upper side of the test chamber 6 is an air outlet pipe 11. On the outer side of the filter tank 7 is a connecting pipe 12. Inside the filter tank 7 is a filter screen 13. On the outer side of the filter screen 13 is a conduit 14. The other end of the conduit 14 is fixedly connected to a purifier 15. The other end of the air outlet pipe 11 is connected to the connecting pipe 12.

[0031] The main body 1 is also provided with a collection tank 16 inside, a rotating wheel is provided at the bottom of the main body 1, and a pusher is fixedly connected to the other end of the main body 1. The collection tank 16 can collect the oxygen sensor device after the test is completed. The pusher and rotating wheel on the outside of the main body 1 can be used to move the device for the convenience of the experimenter.

[0032] The gas storage tank 4 contains test gas. The connecting pipe 5 is equipped with a control valve and a viewing window. The other end of the connecting pipe 5 is fixedly installed inside the test chamber 6. The outer surface of the test chamber 6 is equipped with a controller. The test gas in the gas storage tank 4 can simulate automobile exhaust gas. The control valve can regulate the delivery rate of the test gas in the connecting pipe 5. The viewing window allows the experimenter to observe the delivery situation in the connecting pipe 5. The connecting pipe 5 connects the gas storage tank 4 and the test chamber 6, and can deliver the test gas in the gas storage tank 4 to the test chamber 6. The controller outside the test chamber 6 can operate the test chamber 6.

[0033] The water outlet pipe 10 extends through the main body 1 to the upper surface of the main body 1 and is located directly above the water tank 8. The other end of the water outlet pipe 10 is fixedly connected to a nozzle. If the equipment catches fire during the oxygen sensor combustion test, the fire can be extinguished by spraying liquid through the water outlet pipe 10, thereby improving the safety of the device.

[0034] The filter screen 13 is uniformly attached to the inner wall of the filter canister 7 in a canister shape. Activated carbon is installed inside the filter screen 13. The filter screen 13 is designed to be canister-shaped so that it can adhere to the inner wall of the filter canister 7. The exhaust gas after the combustion test can be adsorbed and purified by the activated carbon inside the filter screen 13.

[0035] The filter canister 7 is equipped with a canister cap at the top. The output end of the purifier 15 is fixedly connected to an exhaust pipe 17, which is connected to the canister cap. The canister cap at the top of the filter canister 7 can prevent the exhaust gas after the combustion test from being directly emitted into the air. The exhaust gas after being adsorbed by the activated carbon inside the filter screen 13 is then passed through the purifier 15 to achieve a double absorption effect on the exhaust gas, which to a certain extent reduces the exhaust gas directly emitted outside the test device and reduces the damage to the environment caused by the combustion exhaust gas.

[0036] The implementation principle of an oxygen sensor combustion test bench according to an embodiment of this application is as follows: the test gas in the gas storage tank 4 can simulate the exhaust gas emitted by a car. The connecting pipe 5 connects the gas storage tank 4 and the test chamber 6, and transports the test gas in the gas storage tank 4 to the test chamber 6 for combustion test experiments. The combustion exhaust gas generated during the experiment is transported to the connecting pipe 5 through the exhaust pipe 11. After entering the connecting pipe 5, the exhaust gas is transported to the filter tank 7. The filter screen 13 is attached to the inner wall of the filter tank 7. The exhaust gas after the combustion test is completed can be adsorbed and purified by the activated carbon in the filter screen 13. Then, the purifier 15 achieves a double absorption effect on the exhaust gas, which reduces the exhaust gas directly emitted to the outside of the test device to a certain extent and reduces the damage to the environment caused by the combustion exhaust gas.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An oxygen sensor combustion test bench, comprising a main body (1), characterized in that: The main body (1) has a first placement cabinet (2) and a second placement cabinet (3) inside. The first placement cabinet (2) has a gas storage tank (4) inside. The output end of the gas storage tank (4) extends through the main body (1) to one side of the outer wall of the main body (1) and is connected by a connecting pipe (5). The upper surface of the main body (1) is provided with a test box (6). The filter tank (7) is also provided with a water tank (8). The second placement cabinet (3) has a water storage tank (9) inside. The output end of the water storage tank (9) is fixedly connected to a water outlet pipe (10). The upper side of the test box (6) is provided with an air outlet pipe (11). The outer side of the filter tank (7) is provided with a connecting pipe (12). The filter tank (7) has a filter screen (13) inside. The outer side of the filter screen (13) is fixedly connected to a conduit (14). The other end of the conduit (14) is fixedly connected to a purifier (15). The other end of the air outlet pipe (11) is connected to the connecting pipe (12).

2. The oxygen sensor combustion test bench according to claim 1, characterized in that: The main body (1) is also provided with a collection groove (16) inside, a rotating wheel is provided at the bottom of the main body (1), and a pusher is fixedly connected to the other end of the main body (1).

3. The oxygen sensor combustion test bench according to claim 1, characterized in that: The gas storage tank (4) is equipped with test gas. The connecting pipe (5) is equipped with a control valve and a viewing window. The other end of the connecting pipe (5) is fixedly installed inside the test box (6). The outer surface of the test box (6) is equipped with a controller.

4. The oxygen sensor combustion test bench according to claim 1, characterized in that: The water outlet pipe (10) extends through the main body (1) to the upper surface of the main body (1) and is located directly above the water tank (8). The other end of the water outlet pipe (10) is fixedly connected to a nozzle.

5. The oxygen sensor combustion test bench according to claim 1, characterized in that: The filter screen (13) is uniformly attached to the inner wall of the filter tank (7) in the shape of a can, and activated carbon is provided inside the filter screen (13).

6. The oxygen sensor combustion test bench according to claim 1, characterized in that: The filter canister (7) is provided with a canister cover at the top, and the output end of the purifier (15) is fixedly connected to an exhaust pipe (17), which is connected to the canister cover.

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