Portable device for measuring carbon emission rate of fixed source

Abstract

The utility model discloses portable equipment for measuring the carbon emission rate of a fixed source. The portable equipment comprises a box body, a signal processing module, a first flue gas parameter measuring module and a second flue gas parameter measuring module, the first flue gas parameter measurement module comprises a pitot tube, a static pressure tube, a differential pressure sensor and a static pressure sensor, the differential pressure sensor is connected with the pitot tube, and the static pressure sensor is connected with the static pressure tube; the second flue gas parameter measurement module comprises a sampling pipe, a temperature sensor, a humidity sensor and a carbon dioxide concentration sensor, the temperature sensor is arranged in the sampling pipe and close to the sampling port, the humidity sensor is arranged in the sampling pipe, and the carbon dioxide concentration sensor is arranged in the sampling pipe and located at the end, without the sampling port, of the sampling pipe; a main discharge pipe is arranged in the box body, the main discharge pipe penetrates out of the box body, and one end, positioned in the box body, of the sampling pipe is connected with the main discharge pipe. According to the utility model, only one sampling hole is needed, the difficulty of insufficient sampling holes of the flue of the power plant is solved, the application scene of the detection device is expanded, and the environmental adaptability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon emission measurement, and in particular relates to a portable device for measuring the carbon emission rate of a fixed source. Background Art

[0002] Greenhouse effect, carbon dioxide emissions and other issues are currently receiving much attention as environmental issues. It is of great significance to quickly measure carbon emissions from fixed pollution sources, grasp the current carbon emission rate of fixed pollution sources in real time, and assist enterprises in carbon reduction.

[0003] At present, the equipment for measuring carbon emissions from stationary emission sources at home and abroad mainly calculates the flue gas flow rate by measuring the flue gas carbon dioxide concentration and flue gas temperature parameters (flue gas parameters include temperature, pressure, flow rate, humidity, etc.), and combines the cross-sectional area measured by the fixed emission source to calculate the carbon emission rate. In the prior art, the sampling holes for measuring flue gas parameters and measuring carbon dioxide concentration are not connected, so it is required that the fixed emission source be provided with at least two sampling holes to measure the flue gas parameters and the carbon dioxide concentration respectively. There are the following problems: some old fixed emission sources do not have enough sampling holes, and reopening the holes poses a safety risk; when quickly spot checking the emission rate of a fixed emission source, only one sampling hole cannot be used to measure the flue gas parameters and carbon dioxide concentration at the same time. Due to the time difference between the two sampling holes, the measured carbon emission rate has a large deviation. Therefore, it is necessary to propose an improved solution to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a portable device for measuring the carbon emission rate of fixed sources. Only one sampling hole is needed, which solves the problem of insufficient sampling holes in the flue of power plants, expands the application scenarios of the detection device and improves environmental adaptability.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] A portable device for measuring carbon emission rate from a stationary source, comprising a housing, a signal processing module, a first flue gas parameter measurement module and a second flue gas parameter measurement module;

[0007] The signal processing module is arranged in the box;

[0008] The first flue gas parameter measurement module includes a pitot tube, a static pressure tube, a differential pressure sensor and a static pressure sensor, the pitot tube passes through the box body, the differential pressure sensor is connected to the part of the pitot tube in the box body, the static pressure tube passes through the box body, the static pressure sensor is connected to the part of the static pressure tube in the box body, and the differential pressure sensor and the static pressure sensor are both connected to the signal processing module;

[0009] The second flue gas parameter measurement module includes a sampling tube, a temperature sensor, a humidity sensor and a carbon dioxide concentration sensor, the sampling tube passes through the box, the end of the sampling tube is a sampling port, the temperature sensor is arranged in the sampling tube and close to the sampling port, the humidity sensor is arranged in the sampling tube and located in the box, the carbon dioxide concentration sensor is arranged in the sampling tube and located at one end of the sampling tube that is not the sampling port, and the temperature sensor, the humidity sensor and the carbon dioxide concentration sensor are all connected to the signal processing module;

[0010] A main discharge pipe is arranged in the box body, and the main discharge pipe passes through the box body. One end of the sampling pipe located in the box body is connected to the main discharge pipe.

[0011] Preferably, a flange partition is provided on one side of the box body facing the sampling hole, the sampling tube, the static pressure tube and the pitot tube all pass through the flange partition, and the outer diameter of the flange partition is greater than the diameter of the sampling hole.

[0012] More preferably, a rubber sealing gasket is provided on the side of the flange partition facing the sampling hole, the sampling tube, the static pressure tube and the Pitot tube pass through the rubber sealing gasket, and the rubber sealing gasket is interference fit with the sampling hole to prevent smoke leakage.

[0013] Preferably, the signal processing module includes a first parameter processing module and a second parameter processing module, the first parameter processing module is connected to the differential pressure sensor and the static pressure sensor, and the second parameter processing module is connected to the temperature sensor, the humidity sensor, and the carbon dioxide concentration sensor.

[0014] More preferably, the signal processing module further includes a display, which is disposed on the outer side of the box body, and is connected to the first parameter processing module and the second parameter processing module for displaying the measurement results.

[0015] Preferably, the second flue gas parameter measurement module further includes a condenser, the sampling tube passes through the condenser, and the condenser is located between the humidity sensor and the carbon dioxide concentration sensor.

[0016] More preferably, the condenser is a semiconductor refrigeration sheet, a plurality of the semiconductor refrigeration sheets are located between the humidity sensor and the carbon dioxide concentration sensor, and cover the surface of the sampling tube, and absorbent cotton is provided on the inner wall of the sampling tube, the absorbent cotton is located between the humidity sensor and the carbon dioxide concentration sensor, and corresponds to the position of the plurality of semiconductor refrigeration sheets.

[0017] Preferably, a filter is provided at one end of the main discharge pipe away from the box body.

[0018] Preferably, the portable device for measuring the carbon emission rate of a fixed source further comprises an exhaust gas processor, and the exhaust gas processor is connected to the end of the main emission pipe located outside the box.

[0019] Preferably, the sampling tube, the static pressure tube and the parts of the Pitot tube in the sampling hole are arranged in parallel.

[0020] Beneficial effects:

[0021] The utility model is highly integrated, only needs one flue sampling hole to complete the measurement, no additional sampling holes are required, and has a wide range of applications.

[0022] The utility model integrates multiple functional modules into one box, has good portability, and is convenient for power plant workers to carry and transport in a narrow space. The device is easy and labor-saving to load and unload, can be quickly installed and disassembled, and has strong adaptability to application scenarios.

[0023] The utility model can simultaneously measure flue gas parameters (temperature, pressure, flow rate, humidity) and carbon dioxide concentration at the same measuring point in the flue, thereby avoiding measurement errors caused by differences in measuring point positions or time lags, and further improving the accuracy of flue gas carbon emission rate detection.

[0024] The utility model is equipped with a real-time display screen for test result information, and has the functions of human-computer interaction and real-time network transmission. It can be used as a rapid testing device for single rapid sampling detection, and can also be installed and fixed on the flue to monitor the flue gas carbon emission rate over a long period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic diagram of the utility model.

[0026] Figure markings: 1-box, 2-static pressure tube, 3-Pitot tube, 4-differential pressure sensor, 5-static pressure sensor, 6-first parameter processing module, 7-sampling tube, 8-temperature sensor, 9-humidity sensor, 10-carbon dioxide concentration sensor, 11-second parameter processing module, 12-display, 13-semiconductor refrigeration sheet, 14-absorbent cotton, 15-main emission pipe, 16-exhaust processor, 17-flange partition, 18-rubber sealing pad, 19-signal transmission line. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0028] A portable device for measuring the carbon emission rate of a fixed source comprises a housing 1, a signal processing module, a first flue gas parameter measurement module and a second flue gas parameter measurement module.

[0029] The signal processing module is arranged in the housing 1. Further, the signal processing module includes a first parameter processing module 6 and a second parameter processing module 11. It is easy to understand that the first parameter processing module 6 is connected to the first flue gas parameter measurement module for receiving and processing data of the first flue gas parameter measurement module, and the second parameter processing module 11 is connected to the second flue gas parameter measurement module for receiving and processing data of the second flue gas parameter measurement module.

[0030] In the present invention, the first parameter processing module 6 and the second parameter processing module 11 are both existing conventional chips. Any chip that is applicable to the present invention and can process the data of the corresponding sensor is acceptable. The present invention does not limit the chip models of the first parameter processing module 6 and the second parameter processing module 11.

[0031] Furthermore, the signal processing module further comprises a display 12, which is connected to the first parameter processing module 6 and the second parameter processing module 11, and is used to display the measurement results. It is easy to understand that the display 12 is arranged on the outer side of the box 1 to display the measurement results.

[0032] The first flue gas parameter measurement module includes a Pitot tube 3, a static pressure tube 2, a differential pressure sensor 4 and a static pressure sensor 5. The Pitot tube 3 passes through the box body 1, and the differential pressure sensor 4 is connected to the part of the Pitot tube 3 in the box body 1. The static pressure tube 2 passes through the box body 1, and the static pressure sensor 5 is connected to the part of the static pressure tube 2 in the box body 1. The differential pressure sensor 4 and the static pressure sensor 5 are both connected to the signal processing module. Specifically, the differential pressure sensor 4 and the static pressure sensor 5 are both connected to the first parameter processing module 6 in the signal processing module through the signal transmission line 19; the Pitot tube 3 and the differential pressure sensor 4 detect the differential pressure data of the flue gas at the sampling point, and the static pressure tube 2 and the static pressure sensor 5 detect the static pressure data of the flue gas at the sampling point.

[0033] The second flue gas parameter measurement module includes a sampling tube 7, a temperature sensor 8, a humidity sensor 9 and a carbon dioxide concentration sensor 10. The sampling tube 7 passes through the box 1. The temperature sensor 8 is arranged in the sampling tube 7 and is close to the sampling port. The humidity sensor 9 is arranged in the sampling tube 7 and is located in the box 1. The carbon dioxide concentration sensor 10 is arranged in the sampling tube 7 and is located at one end of the sampling tube 7 other than the sampling port. The temperature sensor 8, the humidity sensor 9 and the carbon dioxide concentration sensor 10 are all connected to the signal processing module. Specifically, the temperature sensor 8, the humidity sensor 9 and the carbon dioxide concentration sensor 10 are all connected to the second parameter processing module 11 of the signal processing module through the signal transmission line 19. The second flue gas parameter measurement module can simultaneously measure the temperature and humidity of the flue gas and the concentration of carbon dioxide in the flue gas.

[0034] In the present utility model, the sampling tube 7, the static pressure tube 2 and the pitot tube 3 are partially arranged in parallel in the sampling hole. The utility model is applicable to the case of a single sampling hole, which solves the problem of insufficient sampling holes in the flue of a power plant in some cases, expands the application scenarios of the detection device and improves the environmental adaptability. The utility model can simultaneously obtain a variety of required data, and in combination with the pipeline cross-sectional area of ​​the measuring point, the carbon emission rate of the fixed emission source can be quickly obtained. The measured flue gas flow rate is calculated based on the pressure difference data, static pressure data, temperature data combined with the instrument coefficient of the pitot tube 3, the air density in the standard state, atmospheric pressure, density compensation coefficient, temperature and pressure compensation coefficient, etc. The dry flue gas volume flow rate under the standard state is calculated based on the measured flue gas flow rate, temperature data, humidity data, static pressure data combined with the measured cross-sectional area, velocity field coefficient, atmospheric pressure, etc. The carbon emission rate is calculated based on the dry flue gas volume flow rate under the standard state combined with the dry basis volume concentration of carbon dioxide under the standard state. It is easy to understand that the above-mentioned calculation method is a known calculation method in the field.

[0035] A main discharge pipe 15 is arranged in the box 1, and the main discharge pipe 15 passes through the box 1. One end of the sampling tube 7 in the box 1 is connected to the main discharge pipe 15. The measured and processed flue gas is discharged from the box 1 through the main discharge pipe 15.

[0036] Further, the second flue gas parameter measurement module also includes a condenser, the sampling tube 7 passes through the condenser, and the condenser is between the humidity sensor 9 and the carbon dioxide concentration sensor 10. After detecting the humidity of the flue gas, the flue gas passes through the condenser to remove moisture, and then passes through the rear carbon dioxide concentration sensor 10 to detect the carbon dioxide concentration therein. In the utility model, the structure of the condenser is diverse, as long as the device that cools the flue gas can be used. Preferably, the condenser is a semiconductor refrigeration sheet 13, and multiple semiconductor refrigeration sheets 13 are located between the humidity sensor 9 and the carbon dioxide concentration sensor 10, and cover the surface of the sampling tube 7. The inner wall of the sampling tube 7 is provided with absorbent cotton 14, and the absorbent cotton 14 is located between the humidity sensor 9 and the carbon dioxide concentration sensor 10, corresponding to the position of the multiple semiconductor refrigeration sheets 13. The function of the absorbent cotton 14 is to absorb the condensed water. It is easy to understand that the sampling tube 7 provided with the semiconductor refrigeration sheet 13 and the absorbent cotton 14 part can be detachably connected to the front and rear sampling tubes 7, and the sampling tube 7 provided with the semiconductor refrigeration sheet 13 and the absorbent cotton 14 part is equivalent to the condensation section, which reduces the water content in the flue gas. The condensation section adopts a detachable structure, which is convenient for replacing the absorbent cotton 14 in the sampling tube 7.

[0037] Furthermore, a filter is provided at one end of the main exhaust pipe 15 away from the box body 1 , and the smoke is discharged from the box body 1 after being filtered.

[0038] Furthermore, the portable device for measuring the carbon emission rate of a fixed source also includes an exhaust gas processor 16, which is connected to the end of the main emission pipe 15 outside the box 1. After the flue gas leaves the box 1, it enters the exhaust gas processor 16 and is discharged into the atmosphere after purification to reduce the impact of the exhaust gas on the environment. The exhaust gas processor 16 is an existing conventional device for processing exhaust gas, and any exhaust gas processor 16 can be used as long as it is applicable to the exhaust gas processor 16 of the utility model.

[0039] The box body 1 is dustproof and explosion-proof as a whole. A flange partition 17 is provided on the side of the box body 1 facing the sampling hole. The sampling tube 7, static pressure tube 2 and pitot tube 3 all pass through the flange partition 17. The function of the flange partition 17 is to cover the sampling hole and seal the sampling hole airtightly to prevent smoke leakage. It is easy to understand that the outer diameter of the flange partition 17 is larger than the diameter of the sampling hole. Furthermore, a rubber sealing gasket 18 is provided on the side of the flange partition 17 facing the sampling hole. The sampling tube 7, static pressure tube 2 and pitot tube 3 pass through the rubber sealing gasket 18. The rubber sealing gasket 18 is interference fit with the sampling hole to prevent smoke leakage.

[0040] The embodiments provided by the utility model are described in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A portable device for measuring the carbon emission rate of a stationary source, characterized in that: It comprises a housing (1), a signal processing module, a first smoke parameter measurement module and a second smoke parameter measurement module; The signal processing module is arranged in the box (1); The first flue gas parameter measurement module comprises a Pitot tube (3), a static pressure tube (2), a differential pressure sensor (4) and a static pressure sensor (5); the Pitot tube (3) passes through a box (1); the differential pressure sensor (4) is connected to a portion of the Pitot tube (3) located inside the box (1); the static pressure tube (2) passes through a box (1); the static pressure sensor (5) is connected to a portion of the static pressure tube (2) located inside the box (1); and both the differential pressure sensor (4) and the static pressure sensor (5) are connected to a signal processing module; The second flue gas parameter measurement module comprises a sampling tube (7), a temperature sensor (8), a humidity sensor (9) and a carbon dioxide concentration sensor (10); the sampling tube (7) passes through the box (1); the end of the sampling tube (7) is a sampling port; the temperature sensor (8) is arranged in the sampling tube (7) and close to the sampling port; the humidity sensor (9) is arranged in the sampling tube (7) and located in the box (1); the carbon dioxide concentration sensor (10) is arranged in the sampling tube (7) and located at an end of the sampling tube (7) other than the sampling port; the temperature sensor (8), the humidity sensor (9) and the carbon dioxide concentration sensor (10) are all connected to the signal processing module; A main discharge pipe (15) is arranged in the box body (1), and the main discharge pipe (15) passes through the box body (1). One end of the sampling pipe (7) located in the box body (1) is connected to the main discharge pipe (15).

2. The portable device for measuring carbon emission rate from stationary sources according to claim 1, characterized in that: A flange partition (17) is provided on one side of the box body (1) facing the sampling hole, the sampling tube (7), the static pressure tube (2) and the pitot tube (3) all pass through the flange partition (17), and the outer diameter of the flange partition (17) is greater than the diameter of the sampling hole.

3. The portable device for measuring carbon emission rate from stationary sources according to claim 2, characterized in that: A rubber sealing pad (18) is arranged on one side of the flange partition (17) facing the sampling hole, and the sampling tube (7), the static pressure tube (2) and the pitot tube (3) pass through the rubber sealing pad (18). The rubber sealing pad (18) is interference-fitted with the sampling hole to prevent smoke leakage.

4. The portable device for measuring carbon emission rate from stationary sources according to claim 1, characterized in that: The signal processing module comprises a first parameter processing module (6) and a second parameter processing module (11), wherein the first parameter processing module (6) is connected to a differential pressure sensor (4) and a static pressure sensor (5), and the second parameter processing module (11) is connected to a temperature sensor (8), a humidity sensor (9), and a carbon dioxide concentration sensor (10).

5. The portable device for measuring carbon emission rate from stationary sources according to claim 4, characterized in that: The signal processing module further comprises a display (12), wherein the display (12) is arranged on the outer side of the box body (1), and the display (12) is connected to the first parameter processing module (6) and the second parameter processing module (11) and is used to display the measurement results.

6. The portable device for measuring carbon emission rate from stationary sources according to claim 1, characterized in that: The second flue gas parameter measurement module also includes a condenser, the sampling tube (7) passes through the condenser, and the condenser is located between the humidity sensor (9) and the carbon dioxide concentration sensor (10).

7. The portable device for measuring carbon emission rate from stationary sources according to claim 6, characterized in that: The condenser is a semiconductor refrigeration sheet (13), and a plurality of the semiconductor refrigeration sheets (13) are located between the humidity sensor (9) and the carbon dioxide concentration sensor (10), and cover the surface of the sampling tube (7). The inner wall of the sampling tube (7) is provided with absorbent cotton (14), and the absorbent cotton (14) is located between the humidity sensor (9) and the carbon dioxide concentration sensor (10), corresponding to the position of the plurality of semiconductor refrigeration sheets (13).

8. The portable device for measuring carbon emission rate from stationary sources according to claim 1, characterized in that: A filter is provided at one end of the main discharge pipe (15) away from the box (1).

9. The portable device for measuring carbon emission rate from stationary sources according to claim 1, characterized in that: It also includes an exhaust gas processor (16), which is connected to the end of the main exhaust pipe (15) located outside the box (1).

10. The portable device for measuring carbon emission rate from stationary sources according to any one of claims 1 to 9, characterized in that: The sampling tube (7), the static pressure tube (2) and the pitot tube (3) are arranged in parallel in the sampling hole.

Images