High-precision anti-interference ultraviolet flue gas analyzer

Abstract

The utility model belongs to the technical field of gas analysis equipment, and particularly relates to a high-precision anti-interference ultraviolet flue gas analyzer, which comprises a gas inlet module and a box body module, the tail end of the gas inlet module is provided with a rotating seat, the front end of the box body module is provided with a rotating sleeve corresponding to the rotating seat, the rotating seat is detachably sleeved in the rotating sleeve, and the rotating sleeve is provided with a gas inlet and a gas outlet. The gas inlet module comprises a gas detection tube and a pitot tube which are arranged side by side, a gas sensing assembly and a pressure detection assembly are arranged in the box body module, the tail end of the gas detection tube is communicated with the gas sensing assembly through a hose, and the tail end of the pitot tube is communicated with the pressure detection assembly through a hose. According to the portable ultraviolet flue gas analyzer, the front end of the flue gas analyzer is arranged to be movable, so that a worker can conveniently adjust the gas detection tube and the pitot tube to be aligned with the jet direction of gas flow, the detection precision can be improved, and the use difficulty of the portable ultraviolet flue gas analyzer is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas analysis equipment, and particularly relates to a high-precision anti-interference ultraviolet flue gas analyzer. Background Art

[0002] An ultraviolet flue gas analyzer is a device that continuously analyzes and measures the content of flue gas such as CO2, CO, NOx, SO2, etc. using sensors, and is mainly used for environmental monitoring near small oil-fired and gas-fired boilers' pollution emissions or various chimneys.

[0003] Since the above-mentioned detection locations are generally places where it is difficult for people to reach and it is difficult to operate the instrument. For example, many chimneys are installed on the roof. Therefore, in order to facilitate and quickly conduct detection, a portable ultraviolet flue gas analyzer is commonly used in the market and is directly placed at the exhaust port for synchronous sampling and detection.

[0004] Currently, a portable ultraviolet flue gas analyzer in the market, as shown in a patent document with the patent number CN2023158905.6 and the name of "A Gas Measurement Chamber and Analyzer", includes a measurement outer tube at the front end, a first mounting plate, a second mounting plate, an air inlet joint, an air outlet joint, a gas chamber fixing sleeve, a temperature and humidity monitoring module, a gas chamber tube, a first flue gas temperature probe, a second flue gas temperature probe, a first pitot tube and a second pitot tube; and a detection host adjacent to the front-end assembly.

[0005] However, since the airflow direction of the exhaust outlet such as a chimney to be detected is often not standardly vertically upward, and there is often a certain angular deviation in many cases. Therefore, when the entire ultraviolet flue gas analyzer is placed horizontally, it often cannot detect in the direction of the airflow. In order to improve the detection accuracy, workers must move the entire device to make the orientation of the pitot tube at the front end correspond to the airflow direction. The operation is rather troublesome and laborious, and it is also easy for the pitot tube to fail to align with the airflow direction due to the shaking of the worker's hand, resulting in deviation of the detection value.

[0006] In view of this, in order to improve the detection accuracy of the portable ultraviolet flue gas analyzer and reduce its operation difficulty, it is necessary to improve and develop the flue gas analyzer with adjustable orientation of the pitot tube. Content of the Utility Model

[0007] In order to solve the problem that the pitot tube of a general portable ultraviolet flue gas analyzer is fixedly installed at the front end of the device. In order to make the pitot tube align with the airflow direction to improve the detection accuracy, workers often need to lift the entire device to change the orientation of the pitot tube. The operation is troublesome and laborious, and the detection accuracy cannot be guaranteed. A high-precision anti-interference ultraviolet flue gas analyzer is provided.

[0008] High-precision anti-interference ultraviolet flue gas analyzer, including an intake module and a box body module. A rotating seat is arranged at the tail end of the intake module, and a rotating sleeve is correspondingly arranged at the front end of the box body module for the rotating seat. The rotating seat is detachably sleeved in the rotating sleeve. The intake module includes a gas detection tube and a pitot tube arranged side by side. A gas sensing component and a pressure detection component are arranged in the box body module. The end of the gas detection tube and the gas sensing component, and the end of the pitot tube and the pressure detection component are communicated through hoses.

[0009] Further, a locking screw is threadedly connected to the side of the rotating sleeve, and an inner groove is correspondingly arranged on the outer side of the rotating seat for the locking screw.

[0010] Further, a quick-install bracket is arranged at the bottom of the intake module.

[0011] Further, a heat insulation soft pad is arranged between the rotating seat and the rotating sleeve.

[0012] Further, the gas detection tube includes an air inlet, a measurement gas chamber and an air outlet that are sequentially communicated. One end of a soft optical fiber is arranged in the measurement gas chamber, and the other end of the soft optical fiber is docked with a xenon lamp and a spectrometer in the box body module. The air outlet is communicated with the gas sensing component through a hose.

[0013] Further, a heating module is wrapped outside the measurement gas chamber, and the heating module is connected to a power supply module in the box body module through a soft electric wire.

[0014] Further, a condenser is communicated in the pipeline between the air outlet and the gas sensing component.

[0015] Further, the drain outlet of the condenser is communicated with a drain pump through a one-way valve, and the output end of the gas sensing component is communicated with an exhaust gas pump through an air path.

[0016] Further, the box body module includes a square box body, and soft corner pads are wrapped outside the corner points of the square box body.

[0017] The advantages of the present utility model are as follows:

[0018] 1. The intake module at the front end of the analyzer is detachable and can be adjusted arbitrarily, which facilitates the staff to set the inlet orientations of the gas detection tube and the pitot tube according to the air flow direction to be detected, reduces the operation difficulty of the equipment and improves the detection accuracy.

[0019] 2. The installation and disassembly of the intake module are fast and convenient, and the detection efficiency is relatively high.

[0020] 3. The quick-release rotating mechanism is relatively simple, the increase in the weight of the equipment is small, and it is convenient to popularize and use. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic structural diagram of a high-precision anti-interference ultraviolet flue gas analyzer;

[0023] Figure 2 Exploded structure of a high-precision anti-interference ultraviolet flue gas analyzer;

[0024] Figure 3 Cross-sectional structure diagram of the intake module;

[0025] Figure 4 Schematic diagram of the component connection of a high-precision anti-interference ultraviolet flue gas analyzer.

[0026] Reference signs in the drawings:

[0027] 1. Intake module; 101. Quick-install bracket; 2. Box module; 201. Soft corner guard pad; 301. Rotating seat; 302. Rotating sleeve; 303. Locking screw; 304. Inner groove; 4. Gas detection tube; 401. Intake port; 402. Measuring gas chamber; 403. Outlet port; 404. Gas sensing component; 405. Exhaust gas pump; 5. Pitot tube; 501. Pressure detection component; 6. Hose; 7. Heat insulation soft pad; 8. Soft optical fiber; 801. Xenon lamp; 802. Spectrometer; 9. Heating module; 10. Condenser. Detailed implementation manners

[0028] In order to solve the problem that the pitot tube of a general portable ultraviolet flue gas analyzer is fixedly installed at the front end of the device. In order to align the pitot tube with the air flow direction to improve the detection accuracy, the staff often needs to lift the entire device to change the orientation of the pitot tube, which is troublesome and laborious to operate, and the detection accuracy cannot be guaranteed. A high-precision anti-interference ultraviolet flue gas analyzer is provided.

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] It should be noted that the terms such as "inside", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in technical content, should also be regarded as the scope of implementation of the present utility model. This is stated first for clarity.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0032] As Figures 1 to 4 shown, this embodiment provides a high-precision anti-interference ultraviolet flue gas analyzer, which includes an intake module 1 and a box body module 2. A rotating seat 301 is arranged at the tail end of the intake module, and a rotating sleeve 302 is correspondingly arranged at the front end of the box body module 2 opposite to the rotating seat 301. The rotating seat 301 is detachably sleeved in the rotating sleeve 302. The intake module 1 includes a gas detection tube 4 and a pitot tube 5 arranged side by side. A gas sensing component 404 and a pressure detection component 501 are arranged in the box body module 2. The end of the gas detection tube 4 and the gas sensing component 404, and the end of the pitot tube 5 and the pressure detection component 501 are both connected through a hose 6.

[0033] In actual use, first take the entire device of this embodiment and place it next to the exhaust port to be detected, and then align the input end of the intake module 1 with the air flow ejection direction of the exhaust port to start the device for detection. To improve the detection accuracy and ensure that the input end of the intake module 1 is aligned with the exhaust direction, the rotating seat 301 at the end of the intake module 1 can be separated from the rotating sleeve 302 and turned to adjust the orientation of the input end of the intake module 1 so that it accurately corresponds to the air flow direction of the exhaust. Since the components in the intake module 1 and the components in the box module 2 are connected by soft parts, the device will not malfunction due to component disconnection when disassembling the rotating intake module 1.

[0034] It is worth mentioning that since ultraviolet flue gas analyzers have long been popular in the market (such as Zhonggu Yunkexin ZGYK-2106 ultraviolet flue gas analyzer), this solution only focuses on the improvement and research and development of the connection structure of its input pipeline, so the specific operation principle of the ultraviolet flue gas analyzer will not be elaborated here.

[0035] A locking screw 303 is threadedly connected to the side of the rotating sleeve 302, and an inner groove 304 is provided on the outer side of the rotating seat 301 corresponding to the locking screw 303. The cooperation of the locking screw 303 and the inner groove 304 can achieve the quick installation, disassembly and fixation of the rotating seat 301.

[0036] A quick installation bracket 101 is provided at the bottom of the intake module 1. The quick installation bracket 101 can adopt the standard of Arca quick release plates commonly used in the market, which facilitates the bottom of the intake module 1 to be docked with support tools such as tripods and strong clamp brackets, and flexibly locates the orientation of the input end of the intake module 1.

[0037] A heat insulation soft pad 7 is provided between the rotating seat 301 and the rotating sleeve 302. The heat insulation soft pad 7 can prevent heat from being conducted from the intake module 1 to the box module 2 and affecting the operation of the device.

[0038] The gas detection tube 4 includes an air inlet 401, a measurement gas chamber 402 and an air outlet 403 that are connected in sequence. One end of a soft optical fiber 8 is provided in the measurement gas chamber 402, and the other end of the soft optical fiber 8 is docked with the xenon lamp 801 and the spectrometer 802 in the box module 2. The air outlet 403 is connected to the gas sensing component 404 through a hose 6. In the measurement gas chamber 402, due to the presence of gas, when the light is reflected back, it will be weakened due to absorption by the gas. After the light emitted by the xenon lamp 801 is output to the measurement gas chamber 402 through the soft optical fiber 8, it is reflected and enters the spectrometer 802 through the soft optical fiber 8. The spectrometer 802 analyzes the spectral data and calculates the concentration of the corresponding gas according to the Lambert-Beer law.

[0039] The outside of the measurement gas chamber 402 is wrapped with a heating module 9, and the heating module 9 is connected to the power supply module in the box module 2 through a flexible wire. The heating module 9 can use a heating element commonly used in the market, such as an electric heating wire, to heat the measurement gas chamber 402, so that the moisture evaporates into a gaseous state, avoiding the condensation of moisture into a liquid state in the measurement gas chamber 402, resulting in the gas components to be detected dissolving in water and affecting the detection accuracy.

[0040] A condenser 10 is connected in the pipeline between the air outlet 403 and the gas sensing component 404. The drain outlet of the condenser 10 is connected to a drain pump through a check valve, and the output end of the gas sensing component 404 is connected to an exhaust gas pump 405 through a gas path. The condenser 10 can cooperate with the drain pump to condense and discharge the moisture in the gas to be detected, avoiding the liquefaction of moisture on the gas sensing component 404 (generally three sensors for carbon monoxide, carbon dioxide, and oxygen) and resulting in a decrease in detection accuracy. The check valve can prevent the gas to be detected from leaking from the pipeline of the drain pump. The exhaust gas pump 405 can ensure the flow rate of the gas to be detected in the gas detection tube 4 and empty the gas to be detected in the device in time after the detection is completed.

[0041] The box module 2 includes a square box, and soft corner pads 201 are wrapped outside the corner points of the square box. The soft corner pads 201 can prevent the device from being damaged by collision and prevent the device from injuring the staff, improving the work safety.

[0042] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. That is, all equal changes and modifications made according to the scope of this application should still fall within the scope covered by the present invention.

Claims

1. High-precision anti-interference ultraviolet flue gas analyzer, characterized in that: It includes an air intake module and a box module. A rotating seat is arranged at the rear end of the air intake module. A rotating sleeve is arranged at the front end of the box module corresponding to the rotating seat. The rotating seat is detachably sleeved in the rotating sleeve. The air intake module includes a gas detection tube and a Pitot tube arranged side by side. A gas sensor assembly and a pressure detection assembly are arranged in the box module. The end of the gas detection tube and the gas sensor assembly are connected, as is the end of the Pitot tube and the pressure detection assembly through a hose.

2. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 1 is characterized in that: A locking screw is threadedly connected to the side surface of the rotating sleeve, and an inner groove is arranged on the outer side of the rotating seat corresponding to the locking screw.

3. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 1 is characterized in that: A quick-install bracket is arranged at the bottom of the air intake module.

4. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 1 is characterized in that: A heat-insulating cushion is arranged between the rotating seat and the rotating sleeve.

5. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 1 is characterized in that: The gas detection tube includes an air inlet, a measuring air chamber and an air outlet which are connected in sequence. One end of a soft optical fiber is arranged in the measuring air chamber. The other end of the soft optical fiber is connected to a xenon lamp and a spectrometer in the box module. The air outlet is connected to a gas sensing component through a hose.

6. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 5 is characterized in that: The outer side of the measuring gas chamber is wrapped with a heating module, and the heating module is connected to the power supply module in the box module through a soft wire.

7. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 6 is characterized in that: A pipeline between the gas outlet and the gas sensor assembly is connected with a condenser.

8. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 7 is characterized in that: The drain outlet of the condenser is connected to a drain pump via a one-way valve, and the output end gas path of the gas sensor assembly is connected to an exhaust gas pump.

9. The high-precision anti-interference ultraviolet flue gas analyzer according to claim 1 is characterized in that: The box module comprises a square box, and the outer sides of the corner points of the square box are wrapped with soft corner pads.

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