Instrument detection pipeline structure based on tail gas concentration monitoring

Abstract

The utility model discloses an instrument detection pipeline structure based on tail gas concentration monitoring, which comprises a gas detector and a detection pipeline horizontally arranged at a detection port of the gas detector, and the detection pipeline comprises a detection pipe connected with the gas detector. The end, away from the gas detector, of the detection pipe is provided with an upwards-inclined gas inlet pipe, a gas inlet of the gas inlet pipe is connected with the side wall of the tail gas exhaust pipeline, a flow guide pipe is arranged at the bottom of the detection pipe, two gas inlet pipe openings of the flow guide pipe are correspondingly connected with the bottoms of the two ends of the detection pipe, and a liquid storage bottle is installed at the bottom of the flow guide pipe. According to the instrument detection pipeline structure based on tail gas concentration monitoring, the branch is arranged at the bottom of the detection pipe, so that water vapor in the detection pipe can be condensed and settled, the influence of the water vapor on laser of a specific wave band is avoided, the detection effect is improved, settled liquid water can be collected through the liquid storage bottle, and the instrument detection pipeline structure is simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, specifically to an instrument detection pipeline structure based on exhaust gas concentration monitoring. Background Technology

[0002] In industrial waste gas treatment, real-time monitoring of combustible gas concentrations in exhaust gases is crucial to ensure emission safety and compliance with environmental standards. Especially in fields such as petrochemicals and hazardous waste treatment, real-time detection of the lower explosive limit (LEL) concentration of exhaust gases is a core technical aspect of preventing deflagration accidents. Current mainstream detection methods employ laser absorption spectroscopy, which works by using a specific wavelength of laser light to penetrate the gas being measured, calculating the gas absorption spectral intensity based on Beer-Lambert's law, and then deducing the target gas concentration.

[0003] Current technologies commonly employ vertically arranged exhaust gas ducts with parallel welded detection branches on their side walls to form a detection chamber. A gas detector is installed at the end of the detection branch, and concentration is calculated by measuring the attenuation of the laser beam after passing through the chamber. However, industrial exhaust gases often contain water vapor. Under the influence of temperature gradients, the water vapor condenses on the inner wall of the detection chamber, forming a liquid film. This alters the refractive index of the laser propagation medium, causing optical path shift and scattering loss. Furthermore, the liquid water generates additional absorption peaks for specific wavelengths of laser light, leading to errors in spectral data analysis. Moreover, the water accumulated inside the detection chamber cannot be removed in a timely manner, affecting subsequent detection results. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an instrument detection pipeline structure based on exhaust gas concentration monitoring. By setting a branch at the bottom of the detection tube, water vapor in the detection tube can be condensed and settled, avoiding the influence of water vapor on specific wavelength lasers, thereby improving the detection effect. It can also collect the settled liquid water through a storage bottle. The structure is simple and easy to use, and can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an instrument detection pipeline structure based on exhaust gas concentration monitoring, comprising a gas detector and a detection pipeline horizontally arranged at the detection port of the gas detector. The detection pipeline includes a detection tube connected to the gas detector, a guide tube at the bottom of the detection tube, two air inlets of the guide tube correspondingly connected to the bottom ends of the detection tube, and a liquid storage bottle installed at the bottom of the guide tube.

[0006] As a preferred embodiment of this utility model, the end of the detection tube away from the gas detector is provided with an upwardly inclined air inlet pipe, and the air inlet of the air inlet pipe is connected to the side wall of the exhaust pipe.

[0007] As a preferred embodiment of this utility model, the bottom of the guide tube is provided with a threaded opening, and the mouth of the liquid storage bottle is threadedly connected to the threaded opening.

[0008] As a preferred embodiment of this utility model, a transparent tube is provided on the upper side of the liquid storage bottle.

[0009] As a preferred embodiment of this utility model, the inner wall of the detection tube located between the two air inlets of the guide tube is provided with a guide plate, and the inner cavity of the guide plate is in the form of two symmetrically arranged trumpet-shaped structures.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The instrument detection pipeline structure based on exhaust gas concentration monitoring in this utility model can condense and settle water vapor in the detection tube by setting a branch at the bottom of the detection tube, thereby avoiding the influence of water vapor on the laser of a specific wavelength band and improving the detection effect. It can also collect the settled liquid water through a storage bottle. The structure is simple and easy to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the installation structure of a gas detector using existing technology.

[0015] In the diagram: 1 Gas detector, 2 Detection pipeline, 21 Detection tube, 22 Inlet pipe, 3 Guide tube, 31 Threaded port, 4 Liquid storage bottle, 5 Transparent tube, 6 Guide plate. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3This utility model provides a technical solution: an instrument detection pipeline structure based on exhaust gas concentration monitoring, including a gas detector 1 and a detection pipeline 2 horizontally set at the detection port of the gas detector 1. The detection pipeline includes a detection tube 21 connected to the gas detector 1. A guide tube 3 is provided at the bottom of the detection tube 21. The two air inlets of the guide tube 3 are connected to the bottom ends of the detection tube 21. A liquid storage bottle 4 is installed at the bottom of the guide tube 3. The exhaust gas discharged from the exhaust gas pipeline enters the detection pipeline 2, and then the gas detector 1 detects the concentration of the explosion line.

[0018] Furthermore, the end of the detection tube 21 away from the gas detector 1 is provided with an upwardly inclined air inlet pipe 22, and the air inlet of the air inlet pipe 22 is connected to the side wall of the exhaust pipe.

[0019] Furthermore, the bottom of the guide tube 3 is provided with a threaded port 31, and the mouth of the liquid storage bottle 4 is threadedly connected to the threaded port 31, making it easy to unscrew the liquid storage bottle 4 and clean the liquid inside.

[0020] Furthermore, a transparent tube 5 is provided on the upper side of the liquid storage bottle 4. When the liquid content in the liquid storage bottle 4 is higher than the inlet of the transparent tube 5, the liquid in the liquid storage bottle 4 enters the transparent tube 5, indicating that the liquid in the liquid storage bottle 4 needs to be cleaned.

[0021] Furthermore, the inner wall of the detection tube 21 located between the two air inlets of the guide tube 3 is provided with a guide plate 6. The inner cavity of the guide plate 6 has two symmetrically arranged trumpet-shaped structures, which can guide the liquid in the detection tube 21 and allow the liquid to enter the liquid storage bottle 4 through the guide tube 3.

[0022] The gas detector 1 is an LEL meter commonly used in the prior art for detecting the concentration of exhaust gas explosion line, and its structure and principle are common knowledge in the field.

[0023] When using:

[0024] The exhaust gas discharged from the exhaust pipe enters the detection pipe 21 through the intake pipe 22, and the gas detector 1 detects the concentration of explosive gas in the exhaust gas.

[0025] In addition, the water vapor in the exhaust gas is liquefied in the detection tube 21 and enters the storage bottle 4 through the guide tube 3;

[0026] When the liquid content in the storage bottle 4 is higher than the inlet of the transparent tube 5, the liquid in the storage bottle 4 enters the transparent tube 5, indicating that the liquid in the storage bottle 4 needs to be cleaned.

[0027] This invention, by setting a branch at the bottom of the detection tube 21, enables the water vapor in the detection tube 21 to condense and settle, avoiding the influence of water vapor on the laser of a specific wavelength band, thereby improving the detection effect. It can also collect the settled liquid water through the storage bottle 4. The structure is simple and easy to use.

[0028] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An instrument detection pipeline structure based on exhaust gas concentration monitoring, comprising a gas detector (1) and a detection pipeline (2) horizontally disposed at the detection port of the gas detector (1), characterized in that: The detection pipeline includes a detection tube (21) connected to a gas detector (1). A guide tube (3) is provided at the bottom of the detection tube (21). The two air inlets of the guide tube (3) are connected to the bottom ends of the detection tube (21). A liquid storage bottle (4) is installed at the bottom of the guide tube (3).

2. The instrument detection pipeline structure based on exhaust gas concentration monitoring according to claim 1, characterized in that: The end of the detection tube (21) away from the gas detector (1) is provided with an upwardly inclined air inlet pipe (22), and the air inlet of the air inlet pipe (22) is connected to the side wall of the exhaust pipe.

3. The instrument detection pipeline structure based on exhaust gas concentration monitoring according to claim 1, characterized in that: The bottom of the guide tube (3) is provided with a threaded opening (31), and the bottle mouth of the liquid storage bottle (4) is threadedly connected to the threaded opening (31).

4. The instrument detection pipeline structure based on exhaust gas concentration monitoring according to claim 1, characterized in that: The upper side of the liquid storage bottle (4) is provided with a transparent tube (5).

5. The instrument detection pipeline structure based on exhaust gas concentration monitoring according to claim 1, characterized in that: The inner wall of the detection tube (21) located between the two air inlets of the guide tube (3) is provided with a guide plate (6), and the inner cavity of the guide plate (6) is two symmetrically arranged trumpet-shaped structures.

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