Boiler flue gas detection device

Abstract

The utility model provides a boiler flue gas detection device, and belongs to the technical field of boiler flue gas. The boiler flue gas detection device comprises a sampling cylinder, a detection box and a cooling mechanism, the detection box is installed at one end of the sampling cylinder, the cooling mechanism is installed on the surface of the sampling cylinder and comprises a cooling groove, a water pump and a first rotating shaft, and the cooling groove is formed in an inner cavity of the sampling cylinder. The cooling mechanism is arranged, cooling liquid in the liquid storage cylinder is pumped into the cooling groove through the water pump, smoke in the sampling cylinder is cooled, the situation that the measurement accuracy and the service life of the sensor are affected by the high temperature of the smoke is avoided, the second rotating shaft is driven by the motor to rotate, and therefore the rotating disc is driven to rotate; and the eccentric shaft drives the driving frame to reciprocate left and right and drives the toothed plate to synchronously move, so that the first gear is driven to drive the turbulent flow blades to rotate and disturb flue gas flowing, the staying time of the flue gas in the pipeline can be prolonged, the heat exchange opportunity is increased, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler smoke, in particular to a boiler smoke detection device. Background Art

[0002] During the combustion process, the boiler will produce harmful gases, such as sulfur dioxide, nitrogen oxides, carbon monoxide, etc. These harmful substances pollute the atmospheric environment. By testing the flue gas, we can ensure that the exhaust gas emitted by the boiler meets the environmental emission standards and reduce pollution to the atmospheric environment. At the same time, the combustion process of the boiler needs to be carried out under specific conditions. Excessive exhaust gas concentration may mean incomplete combustion or a fault in the boiler, which may lead to a decrease in boiler efficiency and even safety hazards. Flue gas detection can detect abnormalities in time, give early warnings, and avoid accidents. In addition, by monitoring the concentration of components such as oxygen and carbon dioxide in the flue gas, it can help the boiler adjust the combustion process, improve combustion efficiency, reduce fuel waste, and reduce operating costs.

[0003] However, boiler flue gas usually has a high temperature, which may cause unstable sensor performance or even damage. For example, chemiluminescence sensors may produce large errors at too high temperatures, and infrared sensors may also age prematurely due to excessive temperatures. Therefore, it is necessary to cool the flue gas. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a boiler smoke detection device that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a boiler smoke detection device, comprising a sampling tube, a detection box and a cooling mechanism, wherein the detection box is installed at one end of the sampling tube, and the cooling mechanism is installed on the surface of the sampling tube for cooling the smoke. The cooling mechanism comprises:

[0007] A cooling groove is provided in the inner cavity of the sampling tube, and a liquid storage cylinder is installed on the surface of the sampling tube for storing cooling liquid;

[0008] A water pump, wherein the water pump is mounted on the side wall of the liquid storage cylinder, the water inlet end of the water pump is connected to the liquid storage cylinder, and the water outlet end of the water pump is connected to the cooling tank;

[0009] The first rotating shaft is symmetrically mounted in the inner cavity of the sampling tube, and a spoiler vane is fixedly mounted on the surface of the first rotating shaft.

[0010] In a preferred embodiment, a flange is fixedly installed at one end of the sampling tube, a mounting plate is fixedly installed in the inner cavity of the detection box, an infrared sensor and a chemiluminescence sensor are installed on the surface of the mounting plate, and an air suction pump is installed on the side wall of the detection box for sucking smoke into the detection box.

[0011] In a preferred embodiment, a heat sink is installed on the surface of the liquid storage cylinder for dissipating the heat of the coolant, a second rotating shaft is rotatably installed in the inner cavity of the sampling cylinder, a motor is fixedly installed on the surface of the sampling cylinder, and the output end of the motor is fixedly connected to the second rotating shaft.

[0012] In a preferred solution, a turntable is fixedly mounted on one end of the second rotating shaft, an eccentric shaft is fixedly mounted on the surface of the turntable, a driving frame is sleeved on the surface of the eccentric shaft, a first connecting rod is fixedly mounted on the side wall of the driving frame, a toothed plate is fixedly mounted on one end of the first connecting rod, a first gear is fixedly mounted on the surface of the first rotating shaft, and the toothed plate is meshed with the first gear.

[0013] In a preferred embodiment, a dust removal mechanism is installed in the inner cavity of the sampling tube for removing particulate matter in the flue gas. The dust removal mechanism includes a filter plate, a brush plate and bristles. The filter plate is slidably installed in the inner cavity of the sampling tube. A third rotating shaft is rotatably installed in the inner cavity of the filter plate. A brush plate is fixedly installed at one end of the third rotating shaft. A plurality of bristles are installed on the surface of the brush plate. The bristles are in contact with the surface of the filter plate and are used to clean particulate impurities on the surface of the filter plate.

[0014] In a preferred embodiment, the filter plate side wall is symmetrically provided with a slider, the inner wall of the sampling tube is symmetrically provided with a slide groove, the slider is slidably connected to the slide groove, a spring is installed in the inner cavity of the slide groove, one end of the spring is fixedly connected to the sampling tube, and the other end of the spring is fixedly connected to the filter plate, so as to drive the filter plate to move toward the inner cavity of the sampling tube.

[0015] In a preferred embodiment, spline teeth are fixedly mounted on the surface of the third rotating shaft, a sleeve is rotatably mounted in the inner cavity of the sampling tube, a spline groove is provided in the inner cavity of the sleeve, the spline teeth are meshed with the spline groove, a second gear is fixedly mounted on one end of the sleeve, a third gear is fixedly mounted on the surface of the second rotating shaft, and the third gear is meshed with the second gear.

[0016] In a preferred solution, a second connecting rod is fixedly mounted on the side wall of the driving frame, and an impact rod is fixedly mounted on one end of the second connecting rod for impacting the filter plate.

[0017] The utility model provides a boiler smoke detection device, and its beneficial effects include:

[0018] 1. By setting up a cooling mechanism, the coolant in the liquid storage cylinder is pumped into the cooling tank through a water pump, so as to cool the flue gas in the sampling cylinder to prevent the high temperature of the flue gas from affecting the measurement accuracy and service life of the sensor, and the second rotating shaft is driven by the motor to rotate, thereby driving the turntable to rotate, and the eccentric shaft drives the driving frame to move back and forth left and right, driving the tooth plate to move synchronously, thereby driving the first gear to drive the spoiler blade to rotate, disturbing the flow of flue gas, which can make the flue gas stay in the pipeline for a longer time, thereby increasing the opportunity of heat exchange and increasing the cooling effect.

[0019] 2. By setting up a dust removal mechanism, dust and other particulate matter are filtered through the filter plate to ensure the detection accuracy of the sensor, and when the motor drives the second shaft to rotate, the second gear and the sleeve are synchronously driven to rotate through the third gear, thereby driving the third shaft and the brush plate to rotate, and the dust accumulated on the surface of the filter plate is cleaned synchronously through the bristles. At the same time, when the driving frame moves back and forth left and right, it drives the second connecting rod to move synchronously, thereby performing synchronous vibration dust removal on the filter plate through the impact rod, thereby improving the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a stereogram provided by the embodiment of the utility model;

[0022] Figure 2 A side view provided for an embodiment of the utility model;

[0023] Figure 3 A cross-sectional view provided for an embodiment of the utility model;

[0024] Figure 4 Another perspective cross-sectional view provided for an embodiment of the utility model;

[0025] Figure 5 A schematic diagram of a local structure provided for an implementation mode of the utility model.

[0026] In the figure: 1, sampling tube; 2, flange; 3, detection box; 4, mounting plate; 5, infrared sensor; 6, chemiluminescent sensor; 7, suction pump; 8, cooling mechanism; 801, cooling tank; 802, liquid storage tube; 803, water pump; 804, heat sink; 805, first rotating shaft; 806, spoiler blade; 807, second rotating shaft; 808, motor; 809, turntable; 810, eccentric shaft; 811, drive Frame; 812, first connecting rod; 813, tooth plate; 814, first gear; 9, dust removal mechanism; 901, filter plate; 902, slider; 903, slide groove; 904, spring; 905, third rotating shaft; 906, brush plate; 907, bristles; 908, spline teeth; 909, sleeve; 910, spline groove; 911, second gear; 912, third gear; 913, second connecting rod; 914, impact rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-Figure 5 As shown, the utility model provides a technical solution: a boiler flue gas detection device, comprising a sampling tube 1, a detection box 3 and a cooling mechanism 8. A flange 2 is fixedly installed at one end of the sampling tube 1, and the sampling tube 1 can be directly fixed to the side wall of the boiler through the flange 2, which is convenient for use. The detection box 3 is installed at the other end of the sampling tube 1, and a mounting plate 4 is fixedly installed in the inner cavity of the detection box 3. An infrared sensor 5 and a chemiluminescence sensor 6 are installed on the surface of the mounting plate 4, which are respectively used to detect the concentrations of carbon dioxide, carbon monoxide and nitrogen oxides in the flue gas. An air suction pump 7 is installed on the side wall of the detection box 3 for sucking the flue gas into the detection box 3.

[0029] Reference Figure 1-Figure 5As shown, in a preferred embodiment, a cooling mechanism 8 is installed on the surface of the sampling tube 1 for cooling the flue gas. The cooling mechanism 8 includes a cooling groove 801, a water pump 803 and a first rotating shaft 805. The cooling groove 801 is opened in the inner cavity of the sampling tube 1 for cooling the flue gas in the sampling tube 1. A liquid storage cylinder 802 is installed on the surface of the sampling tube 1 for storing coolant. The water pump 803 is installed on the side wall of the liquid storage cylinder 802. The water inlet end of the water pump 803 is connected to the liquid storage cylinder 802, and the water outlet end of the water pump 803 is connected to the cooling groove 801. A heat sink 804 is installed on the surface of the liquid storage cylinder 802 for dissipating the heat of the coolant. The coolant in the liquid storage cylinder 802 can be pumped into the cooling groove 801 by the water pump 803, so as to cool the flue gas in the sampling tube 1 and prevent the high temperature of the flue gas from affecting the measurement accuracy and service life of the sensor.

[0030] Reference Figure 1-Figure 5 As shown, in a preferred embodiment, a first rotating shaft 805 is symmetrically rotatably installed in the inner cavity of the sampling cylinder 1, and a spoiler blade 806 is fixedly installed on the surface of the first rotating shaft 805. By disturbing the flow of smoke, the smoke can stay in the pipeline for a longer time, thereby increasing the opportunity for heat exchange. A second rotating shaft 807 is rotatably installed in the inner cavity of the sampling cylinder 1, and a motor 808 is fixedly installed on the surface of the sampling cylinder 1. The output end of the motor 808 is fixedly connected to the second rotating shaft 807. A turntable 809 is fixedly installed at one end of the second rotating shaft 807. An eccentric shaft 810 is fixedly installed on the surface of the turntable 809. The eccentric shaft 810 is installed at a non-center position of the turntable 809, and a drive frame 811 is sleeved on the surface of the eccentric shaft 810. The second rotating shaft 807 can be driven to rotate by the motor 808, thereby driving the turntable 809 to rotate, and the driving frame 811 can be driven to reciprocate left and right by the eccentric shaft 810. A first connecting rod 812 is fixedly installed on the side wall of the driving frame 811, and a tooth plate 813 is fixedly installed on one end of the first connecting rod 812. A first gear 814 is fixedly installed on the surface of the first rotating shaft 805, and the tooth plate 813 is meshed with the first gear 814. When the driving frame 811 reciprocates left and right, the tooth plate 813 is driven to move synchronously, thereby driving the first gear 814 to drive the spoiler blade 806 to rotate, disturbing the flow of smoke, which can make the smoke stay in the pipeline for a longer time, thereby increasing the opportunity for heat exchange and increasing the cooling effect.

[0031] In a preferred embodiment, when in use, the sampling tube 1 is installed on the side wall of the boiler through the flange 2, and the flue gas can be sucked into the detection box 3 through the suction pump 7, and the concentrations of carbon dioxide, carbon monoxide and nitrogen oxides in the flue gas can be detected respectively through the infrared sensor 5 and the chemiluminescence sensor 6. In this process, the coolant in the liquid storage tube 802 can be pumped into the cooling tank 801 through the water pump 803, so as to cool the flue gas in the sampling tube 1 to prevent the high temperature of the flue gas from affecting the measurement accuracy and service life of the sensor, and the second rotating shaft 807 can be driven to rotate by the motor 808, thereby driving the turntable 809 to rotate, and the eccentric shaft 810 drives the driving frame 811 to move back and forth left and right, driving the tooth plate 813 to move synchronously, thereby driving the first gear 814 to drive the spoiler blade 806 to rotate, disturbing the flow of flue gas, and can make the flue gas stay in the pipeline for a longer time, thereby increasing the opportunity for heat exchange and increasing the cooling effect.

[0032] Reference Figure 1-Figure 5 As shown, in a preferred embodiment, a dust removal mechanism 9 is installed in the inner cavity of the sampling barrel 1 for removing particulate matter in the flue gas to prevent dust and other particulate matter from affecting the detection accuracy. The dust removal mechanism 9 includes a filter plate 901, a brush plate 906 and bristles 907. The filter plate 901 is slidably installed in the inner cavity of the sampling barrel 1 for filtering dust and other particulate matter. Slide blocks 902 are symmetrically installed on the side walls of the filter plate 901. Slide grooves 903 are symmetrically opened on the inner wall of the sampling barrel 1. The slide blocks 902 are slidably connected to the slide grooves 903. A spring 904 is installed in the inner cavity of the slide groove 903. One end of the spring 904 is fixedly connected to the sampling barrel 1, and the other end of the spring 904 is fixedly connected to the filter plate 901, so as to drive the filter plate 901 to move toward the inner cavity of the sampling barrel 1.

[0033] Reference Figure 1-Figure 5As shown, in a preferred embodiment, a third rotating shaft 905 is rotatably installed in the inner cavity of the filter plate 901, and a brush plate 906 is fixedly installed at one end of the third rotating shaft 905. A plurality of bristles 907 are installed on the surface of the brush plate 906. The bristles 907 are in contact with the surface of the filter plate 901 and are used to clean the particulate impurities on the surface of the filter plate 901. A spline tooth 908 is fixedly installed on the surface of the third rotating shaft 905. A sleeve 909 is rotatably installed in the inner cavity of the sampling tube 1. A spline groove 910 is provided in the inner cavity of the sleeve 909. The spline tooth 908 meshes with the spline groove 910. A second gear 911 is fixedly installed at one end of the sleeve 909. A third gear 912 is fixedly installed on the surface of the second rotating shaft 807. The third gear 912 meshes with the second gear 911. When the machine 808 drives the second shaft 807 to rotate, the second gear 911 and the sleeve 909 can be synchronously driven to rotate through the third gear 912, thereby driving the third shaft 905 and the brush plate 906 to rotate, and the dust accumulated on the surface of the filter plate 901 is synchronously cleaned by the bristles 907. A second connecting rod 913 is fixedly installed on the side wall of the driving frame 811, and an impact rod 914 is fixedly installed at one end of the second connecting rod 913 for impacting the filter plate 901. When the driving frame 811 reciprocates left and right, it drives the second connecting rod 913 to move synchronously, thereby performing synchronous vibration dust removal on the filter plate 901 through the impact rod 914, thereby improving the dust removal effect, and with the cooperation of the spline teeth 908 and the spline grooves 910, the third shaft 905 can keep rotating synchronously.

[0034] Specifically, the working principle of the boiler flue gas detection device is as follows: when in use, the sampling tube 1 is installed on the side wall of the boiler through the flange 2, and the flue gas can be sucked into the detection box 3 through the suction pump 7, and the concentrations of carbon dioxide, carbon monoxide and nitrogen oxides in the flue gas are detected respectively through the infrared sensor 5 and the chemiluminescence sensor 6. In this process, the coolant in the liquid storage tube 802 can be pumped into the cooling tank 801 through the water pump 803, so as to cool the flue gas in the sampling tube 1 to prevent the high temperature of the flue gas from affecting the measurement accuracy and service life of the sensor, and the second rotating shaft 807 can be driven to rotate by the motor 808, thereby driving the turntable 809 to rotate, and the eccentric shaft 810 drives the driving frame 811 to move back and forth left and right, driving the tooth plate 813 to move synchronously, thereby driving the first gear 814 to drive the spoiler blade 806 to rotate, disturbing the flow of flue gas, and can make the flue gas stay in the pipeline for a longer time, thereby increasing the opportunity for heat exchange and increasing the cooling effect.

[0035] Dust and other particles can be filtered through the filter plate 901 to ensure the detection accuracy of the sensor, and when the motor 808 drives the second shaft 807 to rotate, the second gear 911 and the sleeve 909 can be synchronously driven to rotate through the third gear 912, thereby driving the third shaft 905 and the brush plate 906 to rotate, and the dust accumulated on the surface of the filter plate 901 is cleaned synchronously through the bristles 907. At the same time, when the driving frame 811 moves back and forth left and right, it drives the second connecting rod 913 to move synchronously, thereby performing synchronous vibration dust removal on the filter plate 901 through the impact rod 914, thereby improving the dust removal effect.

[0036] It should be noted that the infrared sensor 5, the chemiluminescence sensor 6, the air pump 7, the water pump 803 and the motor 808 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A boiler smoke detection device, characterized in that: The invention comprises a sampling tube (1), a detection box (3) and a cooling mechanism (8), wherein the detection box (3) is mounted at one end of the sampling tube (1), and the cooling mechanism (8) is mounted on the surface of the sampling tube (1) and is used to cool the smoke. The cooling mechanism (8) comprises: A cooling groove (801), the cooling groove (801) being disposed in the inner cavity of the sampling cylinder (1), and a liquid storage cylinder (802) being installed on the surface of the sampling cylinder (1) for storing cooling liquid; A water pump (803), wherein the water pump (803) is installed on a side wall of the liquid storage cylinder (802), a water inlet end of the water pump (803) is connected to the liquid storage cylinder (802), and a water outlet end of the water pump (803) is connected to the cooling tank (801); A first rotating shaft (805), the first rotating shaft (805) is symmetrically mounted in the inner cavity of the sampling tube (1), and a spoiler blade (806) is fixedly mounted on the surface of the first rotating shaft (805).

2. A boiler smoke detection device according to claim 1, characterized in that: A flange (2) is fixedly mounted on one end of the sampling tube (1); a mounting plate (4) is fixedly mounted in the inner cavity of the detection box (3); an infrared sensor (5) and a chemiluminescence sensor (6) are mounted on the surface of the mounting plate (4); and a suction pump (7) is mounted on the side wall of the detection box (3) for sucking smoke into the detection box (3).

3. A boiler smoke detection device according to claim 1, characterized in that: A heat sink (804) is mounted on the surface of the liquid storage cylinder (802) for dissipating heat from the cooling liquid. A second rotating shaft (807) is rotatably mounted in the inner cavity of the sampling cylinder (1). A motor (808) is fixedly mounted on the surface of the sampling cylinder (1), and an output end of the motor (808) is fixedly connected to the second rotating shaft (807).

4. A boiler smoke detection device according to claim 3, characterized in that: A rotating disk (809) is fixedly mounted on one end of the second rotating shaft (807), an eccentric shaft (810) is fixedly mounted on the surface of the rotating disk (809), a driving frame (811) is sleeved on the surface of the eccentric shaft (810), a first connecting rod (812) is fixedly mounted on the side wall of the driving frame (811), a toothed plate (813) is fixedly mounted on one end of the first connecting rod (812), a first gear (814) is fixedly mounted on the surface of the first rotating shaft (805), and the toothed plate (813) is meshed with the first gear (814).

5. A boiler smoke detection device according to claim 4, characterized in that: The inner cavity of the sampling cylinder (1) is provided with a dust removal mechanism (9) for removing particulate matter in the flue gas. The dust removal mechanism (9) comprises a filter plate (901), a brush plate (906) and bristles (907). The filter plate (901) is slidably mounted in the inner cavity of the sampling cylinder (1). A third rotating shaft (905) is rotatably mounted in the inner cavity of the filter plate (901). A brush plate (906) is fixedly mounted at one end of the third rotating shaft (905). A plurality of bristles (907) are mounted on the surface of the brush plate (906). The bristles (907) are in contact with the surface of the filter plate (901) and are used to clean particulate impurities on the surface of the filter plate (901).

6. A boiler smoke detection device according to claim 5, characterized in that: The side wall of the filter plate (901) is symmetrically provided with a slide block (902); the inner wall of the sampling tube (1) is symmetrically provided with a slide groove (903); the slide block (902) is slidably connected to the slide groove (903); a spring (904) is installed in the inner cavity of the slide groove (903); one end of the spring (904) is fixedly connected to the sampling tube (1); the other end of the spring (904) is fixedly connected to the filter plate (901), and is used to drive the filter plate (901) to move toward the inner cavity of the sampling tube (1).

7. A boiler smoke detection device according to claim 6, characterized in that: A spline tooth (908) is fixedly mounted on the surface of the third rotating shaft (905); a sleeve (909) is rotatably mounted in the inner cavity of the sampling tube (1); a spline groove (910) is formed in the inner cavity of the sleeve (909); the spline tooth (908) meshes with the spline groove (910); a second gear (911) is fixedly mounted on one end of the sleeve (909); a third gear (912) is fixedly mounted on the surface of the second rotating shaft (807); the third gear (912) meshes with the second gear (911).

8. A boiler smoke detection device according to claim 7, characterized in that: A second connecting rod (913) is fixedly mounted on the side wall of the driving frame (811); an impact rod (914) is fixedly mounted on one end of the second connecting rod (913) for impacting the filter plate (901).

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