An intelligent quick-release flue gas sampling device

Abstract

The present invention relates to the field of flue gas sampling technology, and in particular to an intelligent quick-detachable flue gas sampling device, comprising: a sampling probe, a sampling probe tube, a quick-detachable sampling tube base cap, a silicone hose, a flue gas mixer, and an intelligent pump group. The sampling probe and the sampling probe tube are respectively provided with a plurality of sampling probes and a plurality of sampling probe tubes, and the plurality of sampling probes and the plurality of sampling probe tubes are respectively provided in a one-to-one correspondence. The sampling probe is detachably fixedly mounted on the head of the sampling probe tube, and the tails of the plurality of sampling probe tubes are detachably fixedly mounted on the quick-detachable sampling tube base caps. The quick-detachable sampling tube base caps are detachably fixedly mounted on the sampling hole tube base. The output end of the sampling probe tube is connected to the input end of the flue gas mixer via a silicone hose, and the output end of the flue gas mixer is connected to an intelligent pump group with an extraction or backflush function. The present invention provides a flue gas sampling device that can avoid deformation and clogging of the sampling probe tube and is convenient to install and carry.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas sampling, and in particular to an intelligent quick-release flue gas sampling device. Background Art

[0002] In biomass direct-fired power generation boilers, coal-fired boilers, and boilers in the chemical, metallurgical and other industries, accurately measuring the chemical composition, physical phase and reducing atmosphere of boiler flue gas is of great significance for studying boiler combustion reactions and pollutant emission characteristics.

[0003] At present, there are two main ways to sample and test flue gas. One is to collect flue gas in a special container and then take it to the laboratory for component analysis of the sampled flue gas. However, this method has high requirements on the tightness of the sampling and sample gas storage containers, and the analysis cycle is long. During the storage of flue gas, water vapor cools and condenses, which can easily cause the loss of certain components in the flue gas, resulting in inaccurate test results. The other is direct extraction sampling and testing. The flue gas situation in the furnace is relatively complicated. There is often a large amount of smoke and water vapor in the flue gas, and the flue gas has a certain temperature. Using a conventional sampling gun for sampling will cause the sampling tube to bend and deform due to high temperature. The water vapor in the flue gas sampling process will be cooled and condensed, and then coked with the smoke, causing the sampling pipeline to be blocked. Long-term low-flow operation will cause damage to the sampling pump group and detection equipment.

[0004] For example, the patent application number CN201820834035.9 discloses a universal adaptive multi-tube combination type flue gas sampling device, which includes a sealing disc group, a sampling tube and an open fixing ring; the fixing is done by bolts, and the sealing disc group is made of steel, which is heavy and not convenient for quick installation and large-scale carrying; the patent application number CN201821156473.0 discloses a universal assembled multi-tube combination type flue gas sampling device, which includes a sealing disc, a sampling tube, a tightening nut and a connecting sleeve made of ferritic stainless steel, which is heavy and not convenient for quick installation and large-scale carrying; the installation is a traditional bolt installation method, which is difficult to install and has a long installation period. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent quick-release smoke sampling device to solve the technical problems existing in the above-mentioned background technology.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] An intelligent quick-detachable flue gas sampling device comprises: a sampling probe, a sampling probe tube, a quick-detachable sampling tube seat cap, a silicone hose, a flue gas mixer and an intelligent pump group. The sampling probe and the sampling probe tube are respectively provided with a plurality of sampling probes and a plurality of sampling probe tubes, and the sampling probe is detachably fixedly mounted on the head of the sampling probe tube, and the tails of the plurality of sampling probe tubes are respectively detachably fixedly mounted on the quick-detachable sampling tube seat cap, and the quick-detachable sampling tube seat cap is detachably fixedly mounted on the sampling hole tube seat. The output end of the sampling probe tube is connected to the input end of the flue gas mixer through a silicone hose, and the output end of the flue gas mixer is connected to an intelligent pump group with an exhaust or back-blowing function. The sampling probe and the sampling probe tube are respectively made of ceramic material and titanium alloy material.

[0008] Furthermore, the tail end of the sampling probe is threadedly connected to the head end of the sampling probe tube.

[0009] Furthermore, a plurality of sampling probe tube mounting holes are evenly formed on the top of the quick-detachable sampling tube holder cap, and a plurality of sampling probe tubes are respectively inserted into the plurality of sampling probe tube mounting holes.

[0010] Furthermore, a quick-release buckle is provided at the bottom end of the quick-release sampling tube holder cap, and the quick-release buckle is in the shape of a clamp. The two ends of the quick-release buckle are respectively threadedly connected with connecting screws, and the left and right sides of the connecting screw are respectively provided with thread grooves in opposite directions. One end of the connecting screw is fixedly connected with a quick-open handle. When the quick-release buckle is locked, its inner wall is pressed against the outer wall of the sampling hole tube holder.

[0011] Furthermore, a sealing rubber sleeve is sleeved and fixed on the outer side wall of the sampling and measuring hole tube seat.

[0012] Furthermore, the intelligent pump group includes a first solenoid valve, a flow measuring device, a second solenoid valve, an electric vacuum pump, a third solenoid valve, a PLC and a radiator. The first solenoid valve, the second solenoid valve, the electric vacuum pump and the third solenoid valve are connected in sequence, and the third solenoid valve is also connected to the first solenoid valve to form a loop; the flow measuring device is arranged between the first solenoid valve and the second solenoid valve, the PLC is integrated on the electric vacuum pump, and a radiator is also provided on the electric vacuum pump. The output end of the flue gas mixer is connected to an input end on the first solenoid valve, and the PLC controls the first solenoid valve, the second solenoid valve and the third solenoid valve respectively, and a signal transmission channel is established between the flow measuring device and the PLC.

[0013] Furthermore, the first solenoid valve, the second solenoid valve and the third solenoid valve are three-way valves, and the first solenoid valve, the second solenoid valve and the third solenoid valve can be opened and closed in three directions.

[0014] Furthermore, it also includes a flue gas analyzer, and the input end of the flue gas analyzer is connected to the output end of the third solenoid valve in the intelligent pump group.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The intelligent pump unit transmits a flow signal based on the flow measurement device, and the PLC controls the first, second, and third solenoid valves. When the flow measured by the flow measurement device is lower than the operating flow rate, the flow signal is transmitted to the PLC, which controls the first, second, and third solenoid valves to operate simultaneously, and the entire device enters backflush mode. The backflush duration is controlled by the PLC. When the backflush duration is reached, the entire device's air circuit ends backflush, and the first, second, and third solenoid valves simultaneously switch back to their original operating states, and the system enters exhaust mode. Backflush of the entire device's air circuit ensures that the flue gas sampling pipeline is not blocked and that the flue gas flow rate is not too low to damage the electric exhaust pump and testing equipment, ensuring the accuracy and reliability of the test results.

[0017] 2. The sampling probe is made of ceramic. As a front-end filter, the ceramic sampling probe can be in a high-temperature environment for a long time without softening or deforming. The ceramic filter element can effectively filter most of the smoke and water vapor in the flue gas and will not chemically react with the high-temperature flue gas. The sampling probe is made of titanium alloy, which is light, strong, corrosion-resistant and has a long service life.

[0018] 3. The sampling probe, sampling probe tube and quick-release sampling tube base cap in the sampling device are all detachable. Each component can be carried separately after removal. The material is light and convenient for transportation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention in the vacuum working state;

[0020] Figure 2 It is a structural schematic diagram of the present invention in backflush working state;

[0021] Figure 3 This is a schematic diagram of the connection between the sampling probe and the sampling probe tube in the present invention;

[0022] Figure 4 This is a front view of the quick-release sampling tube base cap and its connecting components in the present invention;

[0023] Figure 5 It is a top view of the quick-release sampling tube base cap and its connecting parts in the present invention;

[0024] Figure 6 It is a connection diagram of the sampling component of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the sampling component of the present invention.

[0026] The numbers in the accompanying drawings are: 1-sampling probe, 2-sampling probe, 3-quick-detachable sampling tube seat cap, 4-silicone hose, 5-flue gas mixer, 6-first solenoid valve, 7-flue gas flow sensor, 8-second solenoid valve, 9-electric vacuum pump, 10-third solenoid valve, 11-flue gas analyzer, 12-intelligent pump group, 13-PLC, 14-radiator, 15-quick-open buckle, 16-sealing rubber sleeve, 17-sampling hole tube seat, 18-quick-open handle, 19-connecting screw, 20-sampling probe tube mounting hole. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] See also Figures 1 to 7 As shown, an intelligent quick-detachable flue gas sampling device includes: a sampling probe 1, a sampling probe 2, a quick-detachable sampling tube seat cap 3, a silicone hose 4, a flue gas mixer 5 and an intelligent pump group 12. The sampling probe 1 and the sampling probe 2 are respectively provided with a plurality of sampling probes 1 and a plurality of sampling probes 2. The sampling probe 1 is detachably fixedly mounted on the head of the sampling probe 2, and the tails of the plurality of sampling probes 2 are detachably fixedly mounted on the quick-detachable sampling tube seat cap 3. The quick-detachable sampling tube seat cap 3 is detachably fixedly mounted on the sampling hole tube seat 17. The output end of the sampling probe 2 is connected to the input end of the flue gas mixer 5 through a silicone hose 4. The output end of the flue gas mixer 5 is connected to an intelligent pump group 12 with a vacuum or back-blowing function. The sampling probe 1 and the sampling probe 2 are made of ceramic material and titanium alloy material respectively. The sampling probe 1 has a built-in ceramic filter element, which can filter out most of the smoke and water vapor. The sampling probe 1 and the ceramic filter element will not chemically react with the high-temperature flue gas. The ceramic sampling probe can be kept in a high-temperature environment for a long time as a front-end filter without softening or deformation. The sampling probe 2 is light in material, high in strength, corrosion-resistant, and has a long service life.

[0029] The tail end of the sampling probe 1 is threadedly connected to the head end of the sampling probe tube 2, which facilitates the disassembly and assembly of the sampling probe 1 and the sampling probe tube 2.

[0030] Several sampling probe mounting holes 20 are evenly arranged on the top of the quick-detachable sampling tube base cap 3. Several sampling probes 2 are respectively plugged into the several sampling probe mounting holes 20. The sampling probes 2 can be installed in or removed from the sampling probe mounting holes 20 by plugging and unplugging.

[0031] A quick-release buckle 15 is provided at the bottom end of the quick-release sampling tube holder cap 3. The quick-release buckle 15 is in the shape of a clamp. Both ends of the quick-release buckle 15 are threadedly connected with connecting screws 19. The left and right sides of the connecting screw 19 are respectively provided with thread grooves in opposite directions. One end of the connecting screw 19 is fixedly connected with a quick-open handle 18. When the quick-release buckle 15 is locked, its inner wall is pressed against the outer wall of the sampling and measuring hole tube holder 17; when the quick-open handle 18 is pulled down, the connecting screw 19 drives the quick-release buckle 15 to loosen; when the quick-open handle 18 is pushed up, the connecting screw 19 drives the quick-release buckle 15 to close and lock the outer wall of the sampling and measuring hole tube holder 17.

[0032] A sealing rubber sleeve 16 is sleeved and fixed on the outer side wall of the sampling and measuring hole tube seat 17 , and the sealing rubber sleeve 16 ensures the sealing of the connection between the sampling tube seat cap 3 and the sampling and measuring hole tube seat 17 .

[0033] The intelligent pump group 12 includes a first solenoid valve 6, a flow measuring device 7, a second solenoid valve 8, an electric vacuum pump 9, a third solenoid valve 10, a PLC 13 and a radiator 14. The first solenoid valve 6, the second solenoid valve 8, the electric vacuum pump 9 and the third solenoid valve 10 are connected in sequence, and the third solenoid valve 10 is also connected to the first solenoid valve 6 to form a loop; the flow measuring device is arranged between the first solenoid valve 6 and the second solenoid valve 8, the PLC 13 is integrated on the electric vacuum pump 9, and the electric vacuum pump 9 is also provided with a radiator 14. The output end of the flue gas mixer 5 is connected to an input end of the first solenoid valve 6, and the PLC 13 controls the first solenoid valve 6, the second solenoid valve 8 and the third solenoid valve 10 respectively. A signal transmission channel is established between the flow measuring device 7 and the PLC 13; when the flow measuring device 7 measures that the flue gas flow is lower than the working flow, the flow measuring device 7 feeds back the flow signal to the PLC 13, and the PLC controls the first solenoid valve 6, the second solenoid valve 8 and the third solenoid valve 10 to work respectively, and the left and right paths of the first solenoid valve 6 are opened. , the lower path is closed, the left path of the second solenoid valve 8 is closed, the lower path and the right path are opened, the right path of the third solenoid valve 10 is closed, the left path and the lower path are opened, at this time, air is sucked in through the lower path of the second solenoid valve 8 and the air is pumped into the flue gas mixer 5 through the electric vacuum pump 9 through the second solenoid valve 8, the electric vacuum pump, the third solenoid valve 10, the first solenoid valve 6, and finally into the flue gas mixer 5, realizing the gas path backflush of the entire device, ensuring that the flue gas sampling pipeline is not blocked, and at the same time ensuring that the flue gas flow rate is not too low to damage the electric vacuum pump 9 and the detection instrument, The accuracy and reliability of the test results are guaranteed; when the flue gas is sampled normally, the first solenoid valve 6 is closed on the right, and the left and lower paths are opened, the second solenoid valve 8 is closed on the lower path, and the left and right paths are opened, and the third solenoid valve 10 is closed on the left, and the right and lower paths are opened. At this time, driven by the electric vacuum pump 9, the flue gas in the flue gas mixer 5 passes through the first solenoid valve 6, the flow measuring device 7, the second solenoid valve 8, the electric vacuum pump 9, the third solenoid valve 10 in sequence and finally enters the flue gas analyzer 11 for flue gas analysis.

[0034] The first solenoid valve 6 , the second solenoid valve 8 and the third solenoid valve 10 are three-way valves, and the first solenoid valve 6 , the second solenoid valve 8 and the third solenoid valve 10 can be opened and closed in three directions.

[0035] It also includes a flue gas analyzer 11 , the input end of the flue gas analyzer 11 is connected to an output end of the third solenoid valve 10 in the intelligent pump group 12 .

[0036] When using the device, several sampling probes 1 are respectively threadedly connected to the heads of several sampling probes 2, and the lengths of the several sampling probes 2 are different. Then, the several sampling probes 2 are respectively plugged and fixed in the several sampling probe installation holes 20 evenly opened on the top of the quick-detachable sampling tube seat cap 3. After that, the quick-detachable sampling tube seat cap 3 is sleeved on the sampling hole tube seat 17. The sampling hole tube seat 17 is set on the outer wall of the boiler and connected to the boiler cavity. At this time, the several sampling probes 1 and the several sampling probes 2 are all extended into the boiler cavity. Then, the quick-open handle 18 is pushed up and the connecting screw 19 is driven The quick-release buckle 15 is tightened and locked to the outer wall of the sampling hole tube seat 17. Then, the tail output ends of several sampling probes 2 are connected to the flue gas mixer 5 through several silicone hoses 4. At this time, the electric vacuum pump 9 is started, and the first solenoid valve 6, the second solenoid valve 8 and the third solenoid valve 10 are controlled by PLC13 to work. The first solenoid valve 6 is closed on the right, and the left and lower roads are opened. The second solenoid valve 8 is closed on the lower road, and the left and right roads are opened. The third solenoid valve 10 is closed on the left, and the right and lower roads are opened. At this time, driven by the electric vacuum pump 9, the flue gas in the boiler passes through the sampling probe 1, the sampling probe 2 and the flue gas mixer 5 in sequence. 2 and the silicone hose 4 enter the flue gas mixer 5, and the flue gas in the flue gas mixer 5 passes through the first solenoid valve 6, the flow measuring device 7, the second solenoid valve 8, the electric vacuum pump 9, the third solenoid valve 10 in sequence and finally enters the flue gas analyzer 11 for flue gas analysis; when the flue gas flow measured by the flow measuring device 7 is lower than the working flow, the flow measuring device 7 feeds back the flow signal to the PLC13, and the PLC controls the first solenoid valve 6, the second solenoid valve 8 and the third solenoid valve 10 to work respectively, the left and right paths of the first solenoid valve 6 are opened and the lower path is closed, the left path of the second solenoid valve 8 is closed and the lower and right paths are opened , the right path of the third solenoid valve 10 is closed, and the left path and the lower path are opened. At this time, air is sucked in through the lower path of the second solenoid valve 8 and the air is pumped into the flue gas mixer 5 through the second solenoid valve 8, the electric vacuum pump, the third solenoid valve 10, the first solenoid valve 6 through the electric vacuum pump 9. The flue gas in the flue gas mixer 5 enters the boiler cavity through the silicone hose 4, the sampling probe 2 and the sampling probe 1 in turn, realizing the gas path backflushing of the entire device, ensuring that the flue gas sampling pipeline is not blocked, and at the same time ensuring that the flue gas flow is not too low to damage the electric vacuum pump 9 and the detection instrument, ensuring the accuracy and reliability of the detection results.

[0037] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiment without departing from the scope of the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An intelligent quick-release flue gas sampling device, characterized in that: The invention comprises: a sampling probe (1), a sampling probe (2), a quick-detachable sampling tube seat cap (3), a silicone hose (4), a flue gas mixer (5) and an intelligent pump group (12), wherein the sampling probe (1) and the sampling probe (2) are respectively provided with a plurality of sampling probes (1) and a plurality of sampling probes (2) are arranged in a one-to-one correspondence, the sampling probe (1) is detachably fixedly installed at the head of the sampling probe (2), and the tails of the plurality of sampling probes (2) are detachably fixedly installed at the head of the sampling probe (2). The sampling probe (1) is fixedly mounted on a quick-detachable sampling tube base cap (3), and the quick-detachable sampling tube base cap (3) is detachably fixedly mounted on a sampling hole tube base (17). The output end of the sampling probe (2) is connected to the input end of a flue gas mixer (5) through a silicone hose (4), and the output end of the flue gas mixer (5) is connected to an intelligent pump group (12) with a pumping or back-blowing function. The sampling probe (1) and the sampling probe (2) are made of ceramic material and titanium alloy material respectively. The intelligent pump group (12) comprises a first solenoid valve (6), a flow measuring device (7), a second solenoid valve (8), an electric air pump (9), a third solenoid valve (10), a PLC (13) and a radiator (14); the first solenoid valve (6), the second solenoid valve (8), the electric air pump (9) and the third solenoid valve (10) are connected in sequence, and the third solenoid valve (10) is also connected to the first solenoid valve (6) to form a loop; the flow measuring device is arranged between the first solenoid valve (6) and the second solenoid valve (8); the PLC (13) is integrated on the electric air pump (9); the electric air pump (9) is also provided with a radiator (14); the output end of the smoke mixer (5) is connected to an input end of the first solenoid valve (6); the PLC (13) controls the first solenoid valve (6), the second solenoid valve (8) and the third solenoid valve (10) respectively; a signal transmission channel is established between the flow measuring device (7) and the PLC (13); The first solenoid valve (6), the second solenoid valve (8) and the third solenoid valve (10) are three-way valves, and the first solenoid valve (6), the second solenoid valve (8) and the third solenoid valve (10) can all be opened and closed in three directions.

2. The intelligent quick-release smoke sampling device according to claim 1, characterized in that: The tail end of the sampling probe (1) is threadedly connected to the head end of the sampling probe tube (2).

3. The intelligent quick-release smoke sampling device according to claim 1, characterized in that: A plurality of sampling probe tube mounting holes (20) are evenly arranged on the top of the quick-detachable sampling tube seat cap (3), and a plurality of sampling probe tubes (2) are respectively plugged into the plurality of sampling probe tube mounting holes (20).

4. The intelligent quick-release smoke sampling device according to claim 1, characterized in that: The bottom end of the quick-release sampling tube seat cap (3) is provided with a quick-release buckle (15), and the quick-release buckle (15) is in the shape of a clamp. The two ends of the quick-release buckle (15) are respectively threadedly connected to a connecting screw (19), and the left and right sides of the connecting screw (19) are respectively provided with thread grooves in opposite directions. One end of the connecting screw (19) is fixedly connected to a quick-open handle (18). When the quick-release buckle (15) is locked, its inner wall is pressed against the outer wall of the sampling hole tube seat (17).

5. The intelligent quick-release smoke sampling device according to claim 1, characterized in that: A sealing rubber sleeve (16) is sleeved and fixed on the outer side wall of the sampling and measuring hole pipe seat (17).

6. The intelligent quick-release smoke sampling device according to claim 1, characterized in that: It also includes a flue gas analyzer (11), wherein the input end of the flue gas analyzer (11) is connected to an output end of the third solenoid valve (10) in the intelligent pump group (12).

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