Pipeline system for tail gas detection and calibration laboratory

Abstract

The utility model relates to a pipeline system for a tail gas detection calibration laboratory, which belongs to the technical field of tail gas detection and comprises a gas source box, a combiner box and a waste gas storage box. The sampling assembly comprises a filter box arranged on the back of the combiner box, a conveying pipe arranged on the top of the filter box and a detection cylinder arranged at one end of the conveying pipe. According to the pipeline system for the tail gas detection and calibration laboratory, a gas inlet pipe is connected with a tail gas supply pipe, tail gas is guided by the gas inlet pipe and a gas pressure reducer and then enters a gas source box to be stored, the tail gas is guided into a combiner box through a collecting pipe, and the tail gas is preliminarily mixed in the combiner box and then enters a filter box; part of large-particle impurities in the tail gas are preliminarily filtered and absorbed by the filter box and flow into the detection cylinder through the conveying pipe, the gas mixing module enters the detection cylinder to be continuously mixed, part of the tail gas enters the backflow box through the backflow pipe, and preliminary sampling and extraction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, specifically a pipeline system for exhaust gas detection and calibration laboratories. Background Technology

[0002] Exhaust emission testing is an important part of vehicle maintenance and environmental protection. Vehicle exhaust contains pollutants such as carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter, which can seriously pollute the atmosphere and harm human health and ecological balance. Exhaust emission testing monitors vehicle emissions, ensuring they meet environmental standards and reducing pollutant emissions. The composition and content of exhaust gases can reflect the operating status of components such as the vehicle's engine. For example, excessively high carbon monoxide levels in exhaust gases may indicate incomplete combustion in the engine, suggesting a malfunction that requires repair and adjustment to ensure the vehicle's normal operation and performance.

[0003] Exhaust gas testing mainly detects the content of carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter inside the exhaust gas. After a period of use, conventional testing equipment may experience errors due to the accumulation and adhesion of particulate matter inside the equipment. Laboratory calibration is required to ensure the accuracy of the test data. Conventional exhaust gas testing calibration laboratory pipeline systems can obtain preliminary data through sampling, but due to insufficient sampling flexibility and the inability to perform multiple samplings from the same batch, the detection accuracy may be low. Therefore, a pipeline system for exhaust gas testing calibration laboratories is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pipeline system for exhaust gas testing and calibration laboratories, which has advantages such as high flexibility and high sampling accuracy, and solves the problem that the low flexibility of pipeline systems for exhaust gas testing and calibration laboratories leads to low accuracy of test data.

[0005] To achieve the aforementioned goals of high flexibility and sampling accuracy, this utility model provides the following technical solution: a pipeline system for exhaust gas detection and calibration laboratory, comprising a gas source box, a manifold box, and an exhaust gas collection box, wherein a sampling component is provided on the back of the manifold box;

[0006] The sampling assembly includes a filter box located on the back of the manifold, a delivery pipe located on top of the filter box, a detection tube located at one end of the delivery pipe, several return pipes located on the sides of the detection tubes, a manifold box located on the outside of the return pipes, a sealing plate located on the front of the manifold box, several sample outlet pipes located inside the sealing plate, and a collection box located on the side of the sample outlet pipes.

[0007] Furthermore, the gas source box, the manifold box, and the waste gas collection box are all equipped with gas cylinders inside. The top of the gas source box and the manifold box are equipped with connecting manifolds, and the two ends of the manifolds are respectively connected to the gas cylinders inside the gas source box and the manifold box.

[0008] Furthermore, an air inlet pipe is provided on the top of the gas source box, a gas pressure reducer is provided on the outside of the air inlet pipe, and a connecting pipe is provided inside the manifold box. The two ends of the connecting pipe are respectively connected to the filter box and the gas cylinder inside the manifold box.

[0009] Furthermore, the top of the detection cylinder is provided with several air inlets and outlets, and the top of the exhaust gas collection box is provided with an exhaust pipe, one end of which is connected to the air inlets and outlets.

[0010] Furthermore, one end of the delivery pipe is embedded in the air inlet and outlet and communicates with the interior of the detection cylinder. The air inlet and outlet at the top of the detection cylinder are equipped with a gas mixing module, which includes a drive motor and a mixing fan blade.

[0011] Furthermore, the return pipe is a C-shaped structure fixedly installed on the side of the detection cylinder and communicates with the inside of the detection cylinder. The side of the manifold box is provided with an opening, and the sealing plate is embedded in the opening and fixedly installed with the manifold box.

[0012] Furthermore, the sample outlet tube has a V-shaped structure that penetrates both the inner and outer sides of the sealing plate. A one-way valve is installed inside the inlet of the sample outlet tube located inside the manifold box. The collection box is threadedly connected to the outer end of the sample outlet tube located outside the manifold box.

[0013] Compared with the prior art, this utility model provides a pipeline system for exhaust gas detection and calibration laboratories, which has the following beneficial effects:

[0014] 1. By connecting the intake pipe and the exhaust gas supply pipe, the exhaust gas enters the gas source box for storage after being guided by the intake pipe and the gas pressure reducer. The exhaust gas is then introduced into the manifold box through the manifold pipe. After preliminary mixing in the manifold box, the exhaust gas enters the filter box. The filter box absorbs some of the large particulate impurities in the exhaust gas through the preliminary filtration. The exhaust gas then flows into the detection cylinder through the delivery pipe. The mixing module continuously mixes the exhaust gas entering the detection cylinder. Some of the exhaust gas enters the manifold box through the return pipe, achieving preliminary sampling and extraction.

[0015] 2. This exhaust gas testing and calibration laboratory piping system guides a portion of the exhaust gas into the collection box via the sample outlet pipe. The remaining exhaust gas then flows back into the testing cylinder via the return pipe. The exhaust pipe at the top of the testing cylinder directs excess exhaust gas into the waste gas collection box. After all the exhaust gas inside the testing cylinder is discharged, multiple sealing plates, the sample outlet pipe, and the collection box are removed sequentially. The content of various pollutants in the exhaust gas inside the collection box is then tested using specialized equipment to obtain an average value. This solves the problem of low data accuracy caused by the lack of flexibility in the exhaust gas testing and calibration laboratory piping system. Attached Figure Description

[0016] Figure 1 This is a front perspective view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional view of the back of the structure of this utility model;

[0018] Figure 3 This is a perspective view of the structural testing cylinder, return pipe, and manifold of this utility model;

[0019] Figure 4 This is a three-dimensional view of the sealing plate, sample outlet tube, and collection box of this utility model.

[0020] In the diagram: 1. Gas source box; 2. Manifold box; 3. Waste gas collection box; 4. Sampling component; 41. Filter box; 42. Delivery pipe; 43. Detection cylinder; 431. Inlet and outlet; 44. Return pipe; 45. Manifold box; 46. Sealing plate; 47. Sample outlet pipe; 48. Collection box; 49. Gas mixing module; 5. Manifold; 6. Inlet pipe; 7. Gas pressure reducer; 8. Exhaust pipe. Detailed Implementation

[0021] 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 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.

[0022] Please see Figures 1 to 4 In this embodiment, a pipeline system for exhaust gas detection and calibration laboratory includes a gas source box 1, a manifold box 2 and an exhaust gas collection box 3. A sampling component 4 is provided on the back of the manifold box 2.

[0023] The sampling assembly 4 includes a filter box 41 located on the back of the manifold 2, a delivery pipe 42 located on the top of the filter box 41, a detection cylinder 43 located at one end of the delivery pipe 42, several return pipes 44 located on the side of the detection cylinder 43, a manifold box 45 located on the outside of the return pipes 44, a sealing plate 46 located on the front of the manifold box 45, several sample outlet pipes 47 located inside the sealing plate 46, and a collection box 48 located on the side of the sample outlet pipes 47.

[0024] In this embodiment, gas cylinders are installed inside the gas source box 1, the manifold box 2, and the waste gas collection box 3. A manifold 5 is installed on the top of the gas source box 1 and the manifold box 2. The two ends of the manifold 5 are connected to the gas cylinders inside the gas source box 1 and the manifold box 2, respectively. The manifold 5 introduces the exhaust gas stored inside the gas source box 1 into the manifold box 2.

[0025] In this embodiment, an air inlet pipe 6 is provided on the top of the gas source box 1, and a gas pressure reducer 7 is provided on the outside of the air inlet pipe 6. The exhaust gas enters the gas pressure reducer 7 through the air inlet pipe 6 and then enters the interior of the gas source box 1 for collection and storage. A connecting pipe is provided inside the manifold box 2. The two ends of the connecting pipe are connected to the filter box 41 and the gas cylinder inside the manifold box 2, respectively. The connecting pipe guides the gas that is collected inside the manifold box 2 into the interior of the filter box 41 for filtration.

[0026] In this embodiment, the top of the detection cylinder 43 is provided with several air inlets and outlets 431, and the top of the exhaust gas collection box 3 is provided with an exhaust pipe 8. One end of the exhaust pipe 8 is connected to the air inlets and outlets 431. The air inlets and outlets 431 are connected to the filter box 41 through the conveying pipe 42, so that the filtered exhaust gas can smoothly enter the interior of the detection cylinder 43. After the exhaust gas stays in the detection cylinder 43 for a short time, it enters the interior of the exhaust gas collection box 3 through the exhaust pipe 8.

[0027] In this embodiment, one end of the delivery pipe 42 is embedded in the air inlet / outlet 431 and communicates with the interior of the detection cylinder 43. The air inlet / outlet 431 at the top of the detection cylinder 43 is provided with a gas mixing module 49. The gas mixing module 49 includes a drive motor and a mixing fan blade. The gas mixing module 49 continuously mixes the exhaust gas entering the detection cylinder 43, so that the harmful substances inside the exhaust gas are evenly distributed.

[0028] In this embodiment, the return pipe 44 is a C-shaped structure and is fixedly installed on the side of the detection cylinder 43 and communicates with the inside of the detection cylinder 43. The side of the manifold 45 is provided with an opening, and the sealing plate 46 is embedded in the opening and fixedly installed with the manifold 45. The return pipe 44 introduces a portion of the exhaust gas into the inside of the manifold 45.

[0029] In this embodiment, the sample outlet tube 47 has a V-shaped structure that penetrates both the inner and outer sides of the sealing plate 46. A one-way valve is installed inside the inlet of one end of the sample outlet tube 47 located inside the manifold 45. The collection box 48 is threadedly connected to the outer end of the sample outlet tube 47 located outside the manifold 45. The sample outlet tube 47 introduces the exhaust gas inside the manifold 45 into the interior of the collection box 48.

[0030] The working principle of the above embodiments is as follows:

[0031] By connecting the intake pipe 6 and the exhaust gas supply pipe, the exhaust gas enters the gas source box 1 for storage after being guided by the intake pipe 6 and the gas pressure reducer 7. The exhaust gas is then introduced into the manifold box 2 through the manifold 5. After preliminary mixing in the manifold box 2, the exhaust gas enters the filter box 41. The filter box 41 absorbs some of the large particulate impurities in the exhaust gas through the preliminary filtration. The exhaust gas then flows into the detection cylinder 43 through the delivery pipe 42. The mixing module 49 continuously mixes the exhaust gas entering the detection cylinder 43. Some of the exhaust gas enters the manifold box 45 through the return pipe 44, thus achieving preliminary sampling and extraction.

[0032] In addition, guided by the sample outlet tube 47, some of the exhaust gas enters the interior of the collection box 48, and the remaining exhaust gas re-enters the interior of the detection cylinder 43 through the return pipe 44. The exhaust pipe 8 at the top of the detection cylinder 43 guides the excess exhaust gas into the interior of the waste gas collection box 3. After all the exhaust gas inside the detection cylinder 43 is discharged, the multiple sealing plates 46, the sample outlet tube 47, and the collection box 48 are removed in sequence. The content of each pollutant in the exhaust gas inside the collection box 48 is tested by professional equipment to obtain an average value, thereby solving the problem of low accuracy of test data due to the low flexibility of the pipeline system used in the exhaust gas detection calibration laboratory.

[0033] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that performs control functions, and the existing publicly available power connection technologies are not described in detail in the text.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A pipeline system for tail gas detection calibration laboratory, comprising a gas source box (1), a confluence box (2) and a waste gas storage box (3), characterized in that: The back of the junction box (2) is provided with a sampling component (4); The sampling assembly (4) includes a filter box (41) located on the back of the manifold (2), a delivery pipe (42) located on the top of the filter box (41), a detection tube (43) located at one end of the delivery pipe (42), several return pipes (44) located on the side of the detection tube (43), a manifold box (45) located on the outside of the return pipe (44), a sealing plate (46) located on the front of the manifold box (45), several sample outlet pipes (47) located inside the sealing plate (46), and a collection box (48) located on the side of the sample outlet pipe (47).

2. A tail gas detection calibration laboratory conduit system according to claim 1, wherein: Gas cylinders are installed inside the gas source box (1), the manifold box (2) and the waste gas collection box (3). A manifold pipe (5) is installed on the top of the gas source box (1) and the manifold box (2). The two ends of the manifold pipe (5) are connected to the gas cylinders inside the gas source box (1) and the manifold box (2) respectively.

3. The tail gas detection calibration laboratory piping system of claim 1, wherein: The gas source box (1) is provided with an air inlet pipe (6) at the top, and a gas pressure reducer (7) is provided on the outside of the air inlet pipe (6). The manifold box (2) is provided with a connecting pipe, and the two ends of the connecting pipe are respectively connected to the filter box (41) and the gas cylinder inside the manifold box (2).

4. The tail gas detection calibration laboratory piping system of claim 1, wherein: The top of the detection cylinder (43) is provided with several air inlets and outlets (431), and the top of the exhaust gas collection box (3) is provided with an exhaust pipe (8), one end of which is connected to the air inlets and outlets (431).

5. The tail gas detection calibration laboratory piping system of claim 1, wherein: One end of the delivery pipe (42) is embedded in the air inlet / outlet (431) and communicates with the inside of the detection cylinder (43). The air inlet / outlet (431) at the top of the detection cylinder (43) is provided with a gas mixing module (49), which includes a drive motor and a mixing fan blade.

6. The piping system for tail gas detection calibration laboratory according to claim 1, characterized in that: The return pipe (44) is a C-shaped structure and is fixedly installed on the side of the detection cylinder (43) and communicates with the inside of the detection cylinder (43). The side of the junction box (45) is provided with an opening, and the sealing plate (46) is embedded in the opening and fixedly installed with the junction box (45).

7. A pipeline system for exhaust gas detection and calibration laboratory according to claim 1, characterized in that: The sample outlet tube (47) is a V-shaped structure that penetrates the inner and outer sides of the sealing plate (46). A one-way valve is installed inside the inlet of one end of the sample outlet tube (47) located inside the manifold (45). The collection box (48) is threadedly connected to the outer side of the outlet of the sample outlet tube (47) located outside the manifold (45).

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