Flue gas flow detection device for thermal power plant

Abstract

The utility model relates to the technical field of flue gas flow detection, and discloses a thermal power plant flue gas flow detection device which comprises a box body and a flue gas detector, the side wall of a second connecting shaft is rotatably connected with a second connecting rod, the section, located in the box body, of a condensation pipe is arranged in a snakelike mode, and one-way valves are installed in a water pipe and the condensation pipe. Under the cooperation of the first bevel gear and the third bevel gear, the fan blades are driven to rotate, so that flue gas can enter the flow guide pipe more easily, and the flue gas detection effect of the thermal power plant is improved; through cooperation of a crank, a second connecting shaft and a second connecting rod, a second moving plate drives a piston plate to do reciprocating motion, condensate in a water storage tank enters a sealing box along a water pipe by means of the pressure intensity difference generated by sealing sliding of the sealing box and the piston plate and then returns to the interior of the water storage tank through a condensation pipe, and condensation backflow is formed; condensing and cooling the high-temperature flue gas; and the service life of the flue gas detector is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas flow detection, in particular to a flue gas flow detection device for a thermal power plant. Background Art

[0002] A thermal power plant is a factory that uses combustibles as fuel to produce electricity; the fuel of a thermal power plant refers to the fuel required for the thermal power plant to produce electricity, generally coal or natural gas. Flue gas flow detection is extremely important for many industries such as thermal balance calculation, combustion efficiency evaluation and combustion mechanism research of the boiler combustion system of a thermal power plant. Flow detection requires the use of a flue gas flow detection device.

[0003] At present, in the process of flue gas flow detection in thermal power plants, it is necessary to sample and detect the high-temperature flue gas flow, but the sampling environment temperature is relatively high. Being in a high-temperature environment for a long time will affect the service life of the device. In addition, if the flue gas flows irregularly and there is a lack of flue gas diversion, it will affect the detection effect of the flue gas.

[0004] Therefore, we propose a flue gas flow detection device for a thermal power plant in order to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a smoke flow detection device for a thermal power plant to solve the problems in the background technology that the sampling environment temperature is high, which will affect the service life of the device, and the lack of smoke guide will affect the smoke detection effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke flow detection device for a thermal power plant, comprising a box body, a cleaning component and a smoke detector, wherein the inner side wall of the box body is symmetrically fixedly connected with a mounting plate, each side wall of the mounting plate is penetrated and rotatably connected with a second rotating rod, a side wall at one end of the second rotating rod is fixedly connected with a second bevel gear, and the other end of the second rotating rod is fixedly connected with a crank, wherein the side wall of the crank on one side is fixedly connected with a second connecting shaft, the side wall of the second connecting shaft is rotatably connected with a second connecting rod, one end of the second connecting rod is rotatably connected with a second movable plate, and the second movable plate is rotatably connected with the second movable plate. One end of the moving plate passes through the side wall of the adjacent mounting plate and is fixedly connected to the piston plate. A condensing assembly is installed inside the box body, and the condensing assembly includes a sealing box, which is fixedly connected to the inner wall of the box body. The side wall of the box body is fixedly connected to a water tank. The side wall of the water tank is fixedly connected to a water pipe. One end of the water pipe passes through the side wall of the box body and is fixedly connected to the side wall of the sealing box. The side wall of the sealing box is fixedly connected to a condensing pipe. One end of the condensing pipe passes through the side wall of the box body and is fixedly connected to the water tank. A section of the condensing pipe located inside the box body is arranged in a serpentine shape, and one-way valves are installed inside the water pipe and the condensing pipe.

[0007] Preferably, a semiconductor refrigerator is fixedly connected to the side wall of the water storage tank, a motor is fixedly connected to the side wall of the box body, a first rotating rod is fixedly connected to the output end of the motor, one end of the first rotating rod passes through the rear side wall of the box body and is fixedly connected to the first bevel gear, a fixed plate is fixedly connected to the inner side wall of the box body, a rotating shaft is rotatably connected to the side wall of the fixed plate, a fan blade is fixedly connected to one end of the rotating shaft, and a third bevel gear is fixedly connected to the other end of the rotating shaft.

[0008] Preferably, a plurality of mounting seats are symmetrically fixedly connected to the bottom end of the box body, a flow guide pipe is fixedly connected to the bottom wall of the box body, a plurality of air holes are opened on the top wall of the box body, a control valve is installed inside each of the air holes, and a smoke detector is fixedly connected to the top wall of the box body.

[0009] Preferably, the mounting plate is a U-shaped structure, the first bevel gear, the third bevel gear and the two second bevel gears are all meshedly connected, and the piston plate is sealingly and slidably connected to the sealing box.

[0010] Preferably, the inner wall of the box body is symmetrically provided with sliding grooves, the inner wall of the box body is fixedly connected to a filter, the cleaning assembly includes two first connecting shafts, each of the first connecting shafts is fixedly connected to the side wall of an adjacent crank, the side wall of the first connecting shaft is rotatably connected to a first connecting rod, and one end of the first connecting rod is rotatably connected to a first movable plate.

[0011] Preferably, each of the first movable plates is slidably connected to the side wall of the adjacent mounting plate, the side wall of the first movable plate is fixedly connected to a connecting plate, the bottom end of the connecting plate is fixedly connected to a cleaning brush, both ends of the cleaning brush are slidably connected to the inside of the slide groove, and the cleaning brush is in contact with the top of the filter.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The first rotating rod is driven to rotate by the motor, and the fan blades are driven to rotate with the cooperation of the first bevel gear and the third bevel gear, so that the flue gas can enter the guide pipe more easily; and the second movable plate drives the piston plate to reciprocate through the cooperation of the crank, the second connecting shaft and the second connecting rod, and utilizes the pressure difference generated by the sealing sliding of the sealing box and the piston plate to allow the condensate in the water storage tank to enter the sealing box along the water pipe, and then return to the inside of the water storage tank through the condensation pipe to form condensation reflux, condense and cool the high-temperature flue gas, and solve the problem that the high sampling environment temperature will affect the service life of the device, and the lack of smoke diversion will affect the detection effect of the flue gas; by cooling the high-temperature flue gas, the protection of the flue gas detector is effectively improved, and the service life of the flue gas detector is extended; by diverting the flue gas, the detection effect of the flue gas in the thermal power plant is improved.

[0014] 2. During the rotation of the crank, the first connecting shaft is driven to rotate. Through the cooperation of the first connecting shaft, the first connecting rod and the first movable plate, the first movable plate drives the cleaning brush to reciprocate through the connecting plate, wherein the bristles of the cleaning brush are in contact with the filter. Thus, during the reciprocating motion of the cleaning brush, the filter is continuously cleaned to prevent dust in the flue gas from adhering to the filter and causing blockage, thereby ensuring the normal circulation of the flue gas and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the cleaning component in the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the cleaning component in the side view of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the condensation component in the utility model;

[0019] Figure 5 It is a schematic diagram of the overall appearance of the utility model.

[0020] In the figure: 1. box body; 11. slide groove; 12. fixing plate; 2. mounting seat; 3. air vent; 4. smoke detector; 5. guide tube; 6. cleaning assembly; 61. motor; 62. first rotating rod; 63. first bevel gear; 64. mounting plate; 65. second rotating rod; 66. second bevel gear; 67. crank; 68. first connecting shaft; 69. first connecting rod; 610. first movable plate; 611. connecting plate; 612. cleaning brush; 613. rotating shaft; 614. fan blade; 615. third bevel gear; 7. condensing assembly; 71. water storage tank; 72. semiconductor refrigerator; 73. sealing box; 74. water pipe; 75. second movable plate; 76. second connecting shaft; 77. second connecting rod; 78. condensing tube; 79. piston plate; 8. filter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1 , Figure 2 and Figure 4 A smoke flow detection device for a thermal power plant comprises a box body 1, a cleaning assembly 6 and a smoke detector 4, wherein the inner side wall of the box body 1 is symmetrically fixedly connected with a mounting plate 64, each mounting plate 64 side wall is penetrated and rotatably connected with a second rotating rod 65, one end of the second rotating rod 65 side wall is fixedly connected with a second bevel gear 66, the other end of the second rotating rod 65 is fixedly connected with a crank 67, one side wall of the crank 67 is fixedly connected with a second connecting shaft 76, the side wall of the second connecting shaft 76 is rotatably connected with a second connecting rod 77, one end of the second connecting rod 77 is rotatably connected with a second moving plate 75, one end of the second moving plate 75 penetrates the adjacent mounting plate 6 A piston plate 79 is fixedly connected to the side wall of the box body 1, a condensing assembly 7 is installed inside the box body 1, and the condensing assembly 7 includes a sealing box 73, the sealing box 73 is fixedly connected to the inner side wall of the box body 1, a water storage tank 71 is fixedly connected to the side wall of the box body 1, a water pipe 74 is fixedly connected to the side wall of the water storage tank 71, one end of the water pipe 74 penetrates the side wall of the box body 1 and is fixedly connected to the side wall of the sealing box 73, a condensing pipe 78 is fixedly connected to the side wall of the sealing box 73, one end of the condensing pipe 78 penetrates the side wall of the box body 1 and is fixedly connected to the water storage tank 71, a section of the condensing pipe 78 located inside the box body 1 is arranged in a serpentine shape, and a one-way valve is installed inside the water pipe 74 and the condensing pipe 78.

[0024] A semiconductor refrigerator 72 is fixedly connected to the side wall of the water storage tank 71, a motor 61 is fixedly connected to the side wall of the box body 1, an output end of the motor 61 is fixedly connected to a first rotating rod 62, one end of the first rotating rod 62 passes through the rear side wall of the box body 1 and is fixedly connected to a first bevel gear 63, an inner side wall of the box body 1 is fixedly connected to a fixed plate 12, a side wall of the fixed plate 12 passes through a rotating shaft 613 that is rotatably connected, a fan blade 614 is fixedly connected to the side wall at one end of the rotating shaft 613, and a third bevel gear 615 is fixedly connected to the side wall at the other end of the rotating shaft 613. The semiconductor refrigerator 72 is a prior art, and the cooling end is located inside the water storage tank 71, and the heating end is located outside the water storage tank 71.

[0025] A plurality of mounting seats 2 are symmetrically fixedly connected to the bottom end of the box body 1, a guide pipe 5 is fixedly connected to the bottom wall of the box body 1, a plurality of air holes 3 are opened on the top wall of the box body 1, and a control valve is installed inside each air hole 3. After the smoke detection is completed, the control valve in the air hole 3 is opened to discharge the smoke; a smoke detector 4 is fixedly connected to the top wall of the box body 1; the mounting plate 64 is a U-shaped structure, and the first bevel gear 63, the third bevel gear 615 and the two second bevel gears 66 are all meshedly connected, and the piston plate 79 is sealingly and slidably connected to the sealing box 73, wherein the water pipe 74 and the condenser pipe 78 are both installed with a one-way valve, so that the condensate in the water storage tank 71 can only enter the sealing box 73 along the water pipe 74, and then return to the inside of the water storage tank 71 through the condenser pipe 78 to avoid backflow.

[0026] In this embodiment: when in use, the smoke guide tube 5 enters the interior of the box body 1 and is detected by the smoke detector 4. In order to avoid excessive dispersion of smoke and too little smoke entering the guide tube 5, which affects the detection result, the smoke needs to be diverted; first, the motor 61 is started, and the first rotating rod 62 and the first bevel gear 63 are driven to rotate by the operation of the motor 61, and the meshing action between the bevel gears is used to drive the third bevel gear 615 to rotate, so that the rotating shaft 613 and the fan blade 614 are rotated, so as to improve the diversion effect of the guide tube 5 and make it easier for the smoke to enter the guide tube 5 for detection; since the smoke in the thermal power plant has a high temperature, the smoke detector 4 is in a high temperature state for a long time, which will affect its service life, so that during the rotation of the first rotating rod 62 and the first bevel gear 63, the meshing relationship of the bevel gears is used to drive the second bevel gear 66 to rotate, so that the second rotating rod 65 and the crank 67 are rotated, and the crank 67 and the second connecting shaft 76 are used to rotate. The cooperation of the second connecting rod 77 causes the second movable plate 75 to drive the piston plate 79 to perform reciprocating motion. When the piston plate 79 approaches the mounting plate 64, the pressure difference generated by the sealed sliding of the sealing box 73 and the piston plate 79 draws the condensate in the water tank 71 into the sealing box 73 through the water pipe 74; when the piston plate 79 is away from the mounting plate 64, the pressure in the sealing box 73 increases, and the condensate is forced into the condensation pipe 78, and the condensate returns to the water tank 71 through the condensation pipe 78, forming a condensation cycle. In addition, the condensation pipe 78 is arranged in a serpentine shape at one end in the box body 1, which increases the contact range between the condensate and the high-temperature flue gas and improves the condensation effect, thereby cooling the high-temperature flue gas and greatly reducing the damage to the flue gas detector 4; wherein the water pipe 74 and the condensation pipe 78 are both installed with a one-way valve, so that the condensate in the water tank 71 can only enter the sealing box 73 along the water pipe 74, and then return to the water tank 71 through the condensation pipe 78, to avoid backflow.

[0027] Example 2

[0028] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 3 and Figure 5 The inner wall of the box body 1 is symmetrically provided with a slide groove 11, and the inner wall of the box body 1 is fixedly connected to a filter screen 8. The cleaning component 6 includes two first connecting shafts 68, each of which is fixedly connected to the side wall of an adjacent crank 67. The side wall of the first connecting shaft 68 is rotatably connected to a first connecting rod 69, and one end of the first connecting rod 69 is rotatably connected to a first movable plate 610.

[0029] Each first movable plate 610 is slidably connected to the side wall of the adjacent mounting plate 64, and a connecting plate 611 is fixedly connected to the side wall of the first movable plate 610. A cleaning brush 612 is fixedly connected to the bottom end of the connecting plate 611. Both ends of the cleaning brush 612 are slidably connected to the inside of the slide groove 11. The cleaning brush 612 is in contact with the top of the filter 8 to continuously clean the filter 8 to prevent dust in the smoke from adhering to the filter 8 and causing blockage.

[0030] In this embodiment: since the flue gas contains a large amount of dust, the flue gas enters the interior of the box body 1 through the guide pipe 5 and is filtered through the filter 8. In order to avoid clogging of the filter 8, which causes the flue gas to be unable to continue to flow to the flue gas detector 4, the filter 8 needs to be anti-clogging; during the rotation of the crank 67, the first connecting shaft 68 is driven to rotate, and through the mutual cooperation of the first connecting shaft 68, the first connecting rod 69 and the first movable plate 610, the first movable plate 610 drives the cleaning brush 612 to reciprocate through the connecting plate 611, wherein the bristles of the cleaning brush 612 are in contact with the filter 8, so that during the reciprocating motion of the cleaning brush 612, the filter 8 is continuously cleaned to avoid dust in the flue gas adhering to the filter 8 and causing clogging, thereby ensuring the normal circulation of the flue gas and improving the practicality of the device.

[0031] Working principle: The motor 61 drives the first rotating rod 62 and the first bevel gear 63 to rotate, and the meshing action between the bevel gears drives the third bevel gear 615 to rotate, so that the rotating shaft 613 and the fan blade 614 rotate, so that the smoke can enter the guide tube 5 more easily; during the rotation of the first rotating rod 62 and the first bevel gear 63, the second bevel gear 66 is driven to rotate, so that the second rotating rod 65 and the crank 67 are rotated, and the second movable plate 75 drives the piston plate 79 to reciprocate through the cooperation of the crank 67, the second connecting shaft 76 and the second connecting rod 77, and the pressure difference generated by the sealing sliding of the sealing box 73 and the piston plate 79 is used to store the smoke. The condensate in the water tank 71 enters the sealing box 73 along the water pipe 74, and returns to the inside of the water storage tank 71 through the condenser pipe 78, forming a condensation reflux to condense and cool the high-temperature flue gas; and during the rotation of the crank 67, through the mutual cooperation of the first connecting shaft 68, the first connecting rod 69 and the first movable plate 610, the first movable plate 610 drives the cleaning brush 612 to reciprocate through the connecting plate 611, wherein the bristles of the cleaning brush 612 are in contact with the filter 8, so that during the reciprocating motion of the cleaning brush 612, the filter 8 is continuously cleaned and unblocked, ensuring that the flue gas can pass through the filter 8 normally and drift to the flue gas detector 4 for detection.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A smoke flow detection device for a thermal power plant, comprising a housing (1), a cleaning component (6) and a smoke detector (4), characterized in that: The inner side walls of the box body (1) are symmetrically fixedly connected with mounting plates (64), and each side wall of the mounting plates (64) is penetrated by a second rotating rod (65) rotatably connected thereto. The side wall of one end of the second rotating rod (65) is fixedly connected to a second bevel gear (66), and the other end of the second rotating rod (65) is fixedly connected to a crank (67). The side wall of the crank (67) on one side is fixedly connected to a second connecting shaft (76), and the side wall of the second connecting shaft (76) is rotatably connected to a second connecting rod (77). One end of the second connecting rod (77) is rotatably connected to a second movable plate (75), and one end of the second movable plate (75) penetrates through the side wall of an adjacent mounting plate (64) and is fixedly connected to a piston plate (79). The inside of the box body (1) A condensation assembly (7) is installed, the condensation assembly (7) comprising a sealing box (73), the sealing box (73) being fixedly connected to the inner side wall of the box body (1), the side wall of the box body (1) being fixedly connected to a water storage tank (71), the side wall of the water storage tank (71) being fixedly connected to a water pipe (74), one end of the water pipe (74) passing through the side wall of the box body (1) and being fixedly connected to the side wall of the sealing box (73), the side wall of the sealing box (73) being fixedly connected to a condensation pipe (78), one end of the condensation pipe (78) passing through the side wall of the box body (1) and being fixedly connected to the water storage tank (71), the condensation pipe (78) being arranged in a serpentine shape in a section located inside the box body (1), and one-way valves being installed inside the water pipe (74) and the condensation pipe (78).

2. A smoke flow detection device for a thermal power plant according to claim 1, characterized in that: A semiconductor refrigerator (72) is fixedly connected to the side wall of the water storage tank (71), a motor (61) is fixedly connected to the side wall of the box body (1), a first rotating rod (62) is fixedly connected to the output end of the motor (61), one end of the first rotating rod (62) passes through the rear side wall of the box body (1) and is fixedly connected to a first bevel gear (63), a fixing plate (12) is fixedly connected to the inner side wall of the box body (1), a rotating shaft (613) is rotatably connected to the side wall of the fixing plate (12), a fan blade (614) is fixedly connected to the side wall at one end of the rotating shaft (613), and a third bevel gear (615) is fixedly connected to the side wall at the other end of the rotating shaft (613).

3. A smoke flow detection device for a thermal power plant according to claim 2, characterized in that: The bottom end of the box body (1) is symmetrically fixedly connected to a plurality of mounting seats (2); the bottom wall of the box body (1) is fixedly connected to a flow guide pipe (5); the top wall of the box body (1) is provided with a plurality of air holes (3); a control valve is installed inside each of the air holes (3); and a smoke detector (4) is fixedly connected to the top wall of the box body (1).

4. A smoke flow detection device for a thermal power plant according to claim 2, characterized in that: The mounting plate (64) is of a U-shaped structure; the first bevel gear (63), the third bevel gear (615) and the two second bevel gears (66) are all meshingly connected; and the piston plate (79) is sealingly and slidably connected to the sealing box (73).

5. A smoke flow detection device for a thermal power plant according to claim 1, characterized in that: The inner wall of the box body (1) is symmetrically provided with sliding grooves (11), the inner wall of the box body (1) is fixedly connected to a filter screen (8), the cleaning assembly (6) comprises two first connecting shafts (68), each of the first connecting shafts (68) is fixedly connected to the side wall of an adjacent crank (67), the side wall of the first connecting shaft (68) is rotatably connected to a first connecting rod (69), and one end of the first connecting rod (69) is rotatably connected to a first movable plate (610).

6. A smoke flow detection device for a thermal power plant according to claim 5, characterized in that: Each of the first movable plates (610) is slidably connected to the side wall of the adjacent mounting plate (64); a connecting plate (611) is fixedly connected to the side wall of the first movable plate (610); a cleaning brush (612) is fixedly connected to the bottom end of the connecting plate (611); both ends of the cleaning brush (612) are slidably connected to the inside of the slide groove (11); and the cleaning brush (612) is in contact with the top end of the filter screen (8).

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