Gas detection structure for nitrogen oxide treatment device
By employing a duct and cross-shaped gas detection structure in the exhaust gas catalyst, the problem of inconsistent concentrations in traditional detection structures is solved, thus achieving accuracy and timeliness in exhaust gas detection.
Patent Information
- Application Number
- CN202421418829.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Traditional gas detection structures in exhaust gas catalytic converters have a small frontal area, resulting in inconsistent gas concentrations and making it impossible to accurately detect exhaust gas data.
The gas detection structure employs a duct design, with gas channels and inlets inside the duct. Gas enters the channel through the inlets and mixes to ensure consistent concentration, and is then discharged through the exhaust ports. The combination of the cross-shaped structure and the evenly distributed inlets ensures the accuracy and timeliness of the gas sampler.
It achieves accuracy and timeliness in gas detection, avoids gas stagnation in the channel, and improves the precision and real-time performance of exhaust gas detection.
Smart Images
Figure CN223611196U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to exhaust treatment technical field especially relates to a nitrogen oxide treatment device is with gas detection structure. BACKGROUND
[0002] A catalytic converter unit for an exhaust gas catalytic converter has a plurality of catalytic converter modules. Each catalytic converter module has a ceramic catalytic converter body through which the exhaust gas flows and a metal housing which is rectangular in cross section and serves the ceramic catalytic converter body, wherein the housing is also referred to as a pot.
[0003] The exhaust gas catalytic converter is respectively equipped with the air inlet pipe and the air outlet pipe at both ends, and the air inlet pipe and the air outlet pipe are installed with the gas detection structure for analyzing the content of harmful substances in the exhaust gas. The traditional gas detection is directly installed with the gas sampler on the pipe body, but the gas concentration collected by the sampler directly is not uniform due to the small windward surface, so that the gas data cannot be accurately detected. Based on this, the application provides a nitrogen oxide treatment device with a gas detection structure. SUMMARY
[0004] The utility model discloses a nitrogen oxide treatment device with a gas detection structure to solve the problems raised in the background art.
[0005] To achieve the above object, the utility model provides the following technical scheme: a nitrogen oxide treatment device with a gas detection structure, including the pipeline, be equipped with the air pipe in the pipeline, and the air pipe and the pipeline inner wall surround the gas passage, a plurality of air inlets are evenly arranged on the windward surface of the air pipe, and the air pipe is provided with an air outlet on the side away from the windward surface, the gas passage is communicated with each air inlet, a gas sampler is installed on the pipeline, and the collection end of the gas sampler extends into the gas passage.
[0006] By adopting the above technical scheme: the air pipe is installed in the pipeline, the air pipe has the gas passage and the air inlet, the air inlet is communicated with the gas passage so that the exhaust gas enters the gas passage through the air inlet, the gas sampler is inserted into the gas passage of the air pipe, and after entering from the air inlet, the gas is mixed in the gas passage, so that the concentration in the gas passage is consistent, the accuracy of the gas sampler for detecting the exhaust gas is ensured, and in addition, the detected gas can flow out of the air outlet, which can avoid that the previous gas remains in the gas passage, and the timeliness of the gas detection is ensured.
[0007] The center of the pipeline section is taken as the center of the circle, the pipeline section is divided into a plurality of concentric circles with different diameters, and the through holes with equal sizes are uniformly distributed in each circular area.
[0008] By adopting the technical scheme, the gas can be collected at each position of the pipeline section, the concentration of the gas is prevented from being too large or too small at a certain position, and the accuracy of the waste gas detection by the gas sampler is further ensured.
[0009] The ratio of the total area of the pipeline section area and the area occupied by the air inlet hole is 4-5:1.
[0010] By adopting the technical scheme, the detection accuracy can be ensured while reducing the resistance of the air pipe to the gas flow in the pipeline.
[0011] The pipeline is provided with a mounting hole, and the four pipe heads of the air pipe are provided with pipe openings, one of which is aligned with the mounting hole.
[0012] By adopting the technical scheme, the collection end of the gas collector can be inserted into the pipe opening through the mounting hole, and the collection end is ensured to extend into the gas passage and fully contact with the gas.
[0013] The air pipe adopts a cross-shaped structure, and the four ports of the air pipe are sealingly and fixedly connected with the inner wall of the pipeline.
[0014] By adopting the technical scheme, the air pipe with a cross-shaped structure arranged in the pipeline can reduce the air resistance as much as possible while improving the collection effect of the waste gas.
[0015] The technical effects and advantages of the utility model are as follows:
[0016] 1. In the scheme, the air pipe is installed in the pipeline, the air pipe has a gas passage and is provided with an air inlet hole, the air inlet hole is communicated with the gas passage so that the waste gas enters the gas passage through the air inlet hole, the gas sampler is inserted into the gas passage of the air pipe, and after entering from the air inlet hole, the gas is mixed in the gas passage, so that the concentration in the gas passage is consistent, and the accuracy of the waste gas detection by the gas sampler is ensured.
[0017] 2. In the scheme, the detected gas can flow out from the exhaust hole, which can prevent the previous gas from remaining in the gas passage, and the timeliness of the gas detection is ensured.
[0018] 3. In the scheme, the gas can be collected at each position of the pipeline section, the concentration of the gas is prevented from being too large or too small at a certain position, and the accuracy of the waste gas detection by the gas sampler is further ensured. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The overall structure schematic diagram of embodiment 1 provided by the application is shown in the figure;
[0020] Figure 2 The overall structure schematic diagram of the gas detection structure for the nitrogen oxide treatment device provided by the application is shown in the figure;
[0021] Figure 3for Figure 2 A schematic diagram of the rear view structure.
[0022] Reference numerals: 1. Housing; 2. Inlet pipe; 3. Outlet pipe; 4. Pipe; 41. Mounting hole; 42. Air duct; 43. Inlet port; 44. Exhaust port. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1
[0025] This embodiment has the following characteristics: Figure 1 The catalyst housing 1 shown has an inlet pipe 2 and an outlet pipe 3 at both ends. Both the inlet pipe 2 and the outlet pipe 3 are equipped with a gas detection structure for a nitrogen oxide treatment device. This gas detection structure is as follows: Figure 2 As shown, it includes a pipe 4, inside which is a duct 42. The duct 42 and the inner wall of the pipe 4 form a gas channel. Multiple air inlets 43 are evenly distributed on the windward side of the duct 42, and an exhaust port 44 is distributed on the side of the duct 42 away from the windward side. The gas channel is connected to each air inlet 43. A gas sampler is installed on the pipe 4, with its sampling end extending into the gas channel. The duct 42 is installed inside the pipe 4, containing a gas channel and air inlets 43 connected to the gas channel so that exhaust gas can enter the gas channel through the air inlets 43. Because the gas sampler is inserted into the gas channel of the duct 42, when gas flows through the pipe 4, the air inlets 43 on the duct 42 capture the gas, causing it to stagnate in the gas channel. At this time, the gas mixes and blends within the gas channel, ensuring a uniform concentration and guaranteeing the accuracy of the gas sampler's exhaust gas detection. Furthermore, as... Figure 3 As shown, the detected gas can flow out from the exhaust port 44, which can prevent the previous gas from staying in the gas channel for a long time, thus ensuring the timeliness of gas detection.
[0026] To ensure that the duct 42 can capture gas at various locations on the cross-section of the pipe 4, this embodiment divides the cross-section of the pipe 4 into several concentric rings of unequal diameters, with the center of the cross-section of the pipe 4 as the center. Each ring area is evenly distributed with through holes of equal size. In this way, each location on the cross-section of the pipe 4 has an air inlet 43, ensuring that gas can be collected at various locations on the cross-section of the pipe 4, avoiding excessively high or low concentrations at any one location, and further ensuring the accuracy of the gas sampler in detecting exhaust gas.
[0027] Embodiment 2
[0028] The difference between the present embodiment and Embodiment 1 is that, in order to avoid too many air inlet holes 43 leading to too large windward surface of the air duct 42, the ratio of the cross-sectional area of the pipeline 4 to the total area of the air inlet holes 43 is 4:1, so as to ensure the detection accuracy while reducing the resistance of the air duct 42 to the gas flow in the pipeline 4.
[0029] Specifically, the air duct 42 of the present embodiment can adopt a cross-shaped structure, and the four ports of the air duct 42 are all in sealing and fixed connection with the inner wall of the pipeline 4. In addition, the air duct 42 is uniformly distributed with air inlet holes 43 on the windward surface, and the pipeline 4 is provided with a mounting hole 41, and the four tube heads of the air duct 42 are all provided with a tube opening, one of which is aligned with the mounting hole 41. The collection end of the gas collector can be inserted into the tube opening through the mounting hole 41, so as to ensure that the collection end extends into the gas passage and fully contacts with the gas.
[0030] In the present embodiment, the cross-shaped air duct 42 arranged in the pipeline 4 can reduce the wind resistance as much as possible while improving the collection effect of the exhaust gas.
[0031] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A gas detection structure for a nitrogen oxide treatment device, characterized in that, The pipeline (4) is provided with a wind pipe (42) inside, the wind pipe (42) and the inner wall of the pipeline (4) form a gas passage, a plurality of air inlet holes (43) are uniformly arranged on the windward surface of the wind pipe (42), an air outlet hole (44) is arranged on the side of the wind pipe (42) away from the windward surface, the gas passage is communicated with each air inlet hole (43), and a gas sampler is installed on the pipeline (4), and the collection end of the gas sampler extends into the gas passage.
2. The gas detection structure for a nitrogen oxide treatment device according to claim 1, wherein The center of the section of the pipeline (4) is taken as the center of a circle, the section of the pipeline (4) is divided into a plurality of concentric circles with different diameters, and the same number of through holes with equal sizes are uniformly distributed in each circular area.
3. The gas detection structure for a nitrogen oxide treatment device according to claim 2, wherein The ratio of the cross-sectional area of the pipeline (4) to the total area of the air inlet holes (43) is 4-5:
1.
4. A gas detection structure for a nitrogen oxide treatment device according to any one of claims 1 to 3, characterized in that, The pipeline (4) is provided with a mounting hole (41), four pipe heads of the wind pipe (42) are provided with pipe openings, one of the pipe openings is aligned with the mounting hole (41), and the air outlet hole (44) is arranged on the side of the wind pipe (42) away from the windward surface.
5. The gas detection structure for a nitrogen oxide treatment device according to claim 4, wherein The wind pipe (42) adopts a cross-shaped structure, and the four ports of the wind pipe (42) are sealingly and fixedly connected with the inner wall of the pipeline (4).