Gas analysis pressure tracking device

Abstract

The utility model discloses a gas analysis pressure tracking device belongs to gas analysis technical field, including chimney, sampling analysis subassembly and pressure regulating component, the pressure regulating component includes temperature pressure flow monitor, pressure control board, frequency converter and pressure sensor, temperature pressure flow monitor installs on the chimney, pressure sensor installs on the exhaust pipe, temperature pressure flow monitor, frequency converter and pressure sensor all are connected with pressure control board electricity, frequency converter and sampling pump electricity are connected, through the setting of pressure regulating component, can make gas analysis appearance internal gas pressure and chimney pressure real -time matching, ensure that the gas volume concentration in the gas analyzer is consistent with the actual gas volume concentration in the chimney, compared with the existing CEMS system of fixed sampling amount, the device can effectively avoid the measurement error caused by the change of pollutant unit volume concentration caused by chimney pressure fluctuation, thereby significantly improve the accuracy and representativeness of gas analysis data.

Description

Technical Field

[0001] This utility model belongs to the field of gas analysis technology, specifically relating to a gas analysis pressure tracking device. Background Technology

[0002] In industrial production and environmental monitoring, detecting pollutant concentrations in chimney exhaust is a crucial step in ensuring environmental safety and regulating enterprise emissions. Commonly used monitoring equipment primarily consists of Continuous Emission Monitoring Systems (CEMS). These systems extract gas from the chimney using sampling devices, and the resulting gas analysis data, obtained from the gas analyzer, provides essential information for environmental supervision and process optimization.

[0003] Existing CEMS systems generally employ a fixed sampling rate design, with the sampling pump maintaining a constant extraction volume, making dynamic adjustments impossible based on actual pressure changes within the chimney. However, in practical applications, the gas pressure within the chimney is susceptible to fluctuations due to various factors: adjustments to industrial production conditions directly alter the exhaust gas emission rate and velocity, leading to changes in chimney pressure; fluctuations in ambient wind speed and air pressure indirectly affect the internal pressure balance of the chimney; furthermore, factors such as chimney height and exhaust gas temperature variations can also cause pressure fluctuations.

[0004] When the pressure inside the chimney fluctuates, a CEMS system with a fixed sampling rate exhibits significant limitations: gas volume concentration is directly related to pressure, and pressure changes alter the pollutant concentration per unit volume. A fixed sampling rate cannot adapt to these changes, resulting in inconsistencies between the gas sample received by the gas analyzer and the actual gas volume concentration inside the chimney, ultimately leading to measurement errors. These errors distort monitoring data, potentially causing undetected pollutants exceeding emission standards, impacting the effectiveness of environmental regulations; they can also lead to misinterpretations of monitoring data from compliant companies, causing unnecessary losses. Utility Model Content

[0005] The purpose of this invention is to provide a gas analysis pressure tracking device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas analysis pressure tracking device, comprising a chimney, a sampling analysis component, and a pressure regulating component. The sampling analysis component includes a sampling probe, a sampling pump, and a gas analyzer. The sampling probe is connected to the chimney and is connected to the inlet end of the sampling pump via a first gas guide pipe. The outlet end of the sampling pump is connected to the inlet end of the gas analyzer via a second gas guide pipe. The outlet end of the gas analyzer is connected to an exhaust pipe. The pressure regulating assembly includes a temperature, pressure and flow monitor, a pressure control board, a frequency converter, and a pressure sensor. The temperature, pressure and flow monitor is installed on the chimney, and the pressure sensor is installed on the exhaust pipe. The temperature, pressure and flow monitor, the frequency converter, and the pressure sensor are all electrically connected to the pressure control board, and the frequency converter is electrically connected to the sampling pump.

[0007] In a preferred embodiment, the temperature, pressure and flow monitor is electrically connected to the pressure control board via a first wire.

[0008] In a preferred embodiment, the frequency converter is electrically connected to the pressure control board via a second wire.

[0009] In a preferred embodiment, the pressure sensor is electrically connected to the pressure control board via a third wire.

[0010] In a preferred embodiment, the frequency converter is electrically connected to the sampling pump via a fourth wire.

[0011] In a preferred embodiment, the end of the exhaust pipe extends outdoors.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This gas analysis pressure tracking device, through the setting of pressure regulation components, uses a temperature, pressure and flow monitor to monitor the gas pressure inside the chimney and feeds the pressure signal back to the pressure control board. A pressure sensor monitors the gas pressure discharged from the exhaust pipe and feeds the pressure signal back to the pressure control board. The pressure control board dynamically controls the pumping volume of the sampling pump through a frequency converter, so that the gas pressure inside the gas analyzer matches the chimney pressure in real time. This ensures that the gas volume concentration inside the gas analyzer is consistent with the actual gas volume concentration inside the chimney. Compared with the existing CEMS system that uses a fixed sampling volume, this device can effectively avoid measurement errors caused by changes in the unit volume concentration of pollutants due to chimney pressure fluctuations, thereby significantly improving the accuracy and representativeness of gas analysis data. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pressure regulation and control system of this utility model.

[0014] In the diagram: 1. Chimney; 2. Sampling and analysis assembly; 21. Sampling probe; 22. Sampling pump; 23. Gas analyzer; 24. First gas guide pipe; 25. Second gas guide pipe; 26. Exhaust pipe; 3. Pressure regulation assembly; 31. Temperature, pressure and flow monitor; 32. Pressure control board; 33. Frequency converter; 34. Pressure sensor; 35. First lead wire; 36. Second lead wire; 37. Third lead wire; 38. Fourth lead wire. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figure 1-2 This utility model provides a gas analysis pressure tracking device, including a chimney 1, a sampling and analysis component 2, and a pressure regulating component 3. The sampling and analysis component 2 includes a sampling probe 21, a sampling pump 22, and a gas analyzer 23. The sampling probe 21 is connected to the chimney 1 and is connected to the inlet end of the sampling pump 22 through a first gas guide pipe 24. The outlet end of the sampling pump 22 is connected to the inlet end of the gas analyzer 23 through a second gas guide pipe 25. The outlet end of the gas analyzer 23 is connected to an exhaust pipe 26, and the end of the exhaust pipe 26 extends to the outside. With the setting of the sampling and analysis component 2, when analyzing the gas in the chimney 1, the sampling pump 22 is started to draw the gas in the chimney 1 into the sampling probe 21, and then transports it to the gas analyzer 23 for analysis through the first gas guide pipe 24 and the second gas guide pipe 25. The analyzed gas is discharged from the exhaust pipe 26.

[0018] Pressure regulating assembly 3 includes a temperature, pressure and flow monitor 31, a pressure control board 32, a frequency converter 33, and a pressure sensor 34. The temperature, pressure and flow monitor 31 is installed on the chimney 1, and the pressure sensor 34 is installed on the exhaust pipe 26. The temperature, pressure and flow monitor 31, the frequency converter 33, and the pressure sensor 34 are all electrically connected to the pressure control board 32. The frequency converter 33 is electrically connected to the sampling pump 22. The temperature, pressure and flow monitor 31 is electrically connected to the pressure control board 32 via a first wire 35, the frequency converter 33 is electrically connected to the pressure control board 32 via a second wire 36, the pressure sensor 34 is electrically connected to the pressure control board 32 via a third wire 37, and the frequency converter 33 is electrically connected to the sampling pump 22 via a fourth wire 38. Through the configuration of pressure regulating assembly 3... The temperature, pressure and flow monitor 31 monitors the gas pressure inside the chimney 1 and feeds back the pressure signal to the pressure control board 32. The pressure sensor 34 monitors the gas pressure discharged from the exhaust pipe 26 and feeds back the pressure signal to the pressure control board 32. The pressure control board 32 dynamically controls the pumping volume of the sampling pump 22 through the frequency converter 33, so that the gas pressure inside the gas analyzer 23 matches the pressure of the chimney 1 in real time, ensuring that the gas volume concentration inside the gas analyzer 23 is consistent with the actual gas volume concentration inside the chimney 1. Compared with the existing CEMS system that uses a fixed sampling volume, this device can effectively avoid the measurement error caused by the change in the unit volume concentration of pollutants due to the pressure fluctuation of the chimney 1, thereby significantly improving the accuracy and representativeness of the gas analysis data.

[0019] The working principle and usage process of this utility model are as follows: First, when analyzing the gas inside the chimney 1, the sampling pump 22 is started to draw the gas from the chimney 1 into the sampling probe 21, and then delivers it to the gas analyzer 23 through the first gas guide pipe 24 and the second gas guide pipe 25 for analysis. The analyzed gas is discharged from the exhaust pipe 26. At the same time, the temperature, pressure and flow monitor 31 monitors the gas pressure inside the chimney 1 and feeds back the pressure signal to the pressure control board 32. The pressure sensor 34 monitors the gas pressure discharged from the exhaust pipe 26 and feeds back the pressure signal to the pressure control board 32. The pressure control board 32 dynamically controls the pumping volume of the sampling pump 22 through the frequency converter 33, so that the gas pressure inside the gas analyzer 23 matches the pressure of the chimney 1 in real time, ensuring that the gas volume concentration inside the gas analyzer 23 is consistent with the actual gas volume concentration inside the chimney 1. Compared with the existing CEMS system that uses a fixed sampling volume, this device can effectively avoid the measurement error caused by the change in the unit volume concentration of pollutants due to the pressure fluctuation of the chimney 1, thereby significantly improving the accuracy and representativeness of the gas analysis data.

[0020] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas analysis pressure tracking device, comprising a chimney (1), a sampling and analysis component (2), and a pressure regulating component (3), characterized in that: The sampling and analysis component (2) includes a sampling probe (21), a sampling pump (22), and a gas analyzer (23). The sampling probe (21) is connected to the chimney (1). The sampling probe (21) is connected to the inlet end of the sampling pump (22) through a first gas guide pipe (24). The outlet end of the sampling pump (22) is connected to the inlet end of the gas analyzer (23) through a second gas guide pipe (25). The outlet end of the gas analyzer (23) is connected to an exhaust pipe (26). The pressure regulating assembly (3) includes a temperature, pressure and flow monitor (31), a pressure control board (32), a frequency converter (33), and a pressure sensor (34). The temperature, pressure and flow monitor (31) is installed on the chimney (1), and the pressure sensor (34) is installed on the exhaust pipe (26). The temperature, pressure and flow monitor (31), the frequency converter (33), and the pressure sensor (34) are all electrically connected to the pressure control board (32). The frequency converter (33) is electrically connected to the sampling pump (22).

2. The gas analysis pressure tracking device according to claim 1, characterized in that: The temperature, pressure and flow monitoring instrument (31) and the pressure control board (32) are electrically connected via the first wire (35).

3. The gas analysis pressure tracking device according to claim 1, characterized in that: The frequency converter (33) is electrically connected to the pressure control board (32) via a second wire (36).

4. The gas analysis pressure tracking device according to claim 1, characterized in that: The pressure sensor (34) is electrically connected to the pressure control board (32) via a third wire (37).

5. A gas analysis pressure tracking device according to claim 1, characterized in that: The frequency converter (33) and the sampling pump (22) are electrically connected via a fourth wire (38).

6. A gas analysis pressure tracking device according to claim 1, characterized in that: The exhaust pipe (26) extends to the outside.

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