Power plant boiler furnace gas sampling inspection device

Abstract

The invention relates to the technical field of boiler furnace gas detection, in particular to a power plant boiler furnace gas sampling inspection device which comprises a smoke exhaust pipe communicated with the interior of a boiler furnace, a detection opening is fixed to the outer wall of the smoke exhaust pipe in a penetrating mode, and a smoke inlet pipe is fixed to the outer wall of the smoke exhaust pipe in a penetrating mode. The outer wall of the smoke exhaust pipe is fixedly connected with two symmetrical fixing mechanisms, a frame is detachably connected between the two fixing mechanisms, and the top surface of the frame is provided with an extension mechanism penetrating through the detection port. According to the smoke detector, the rotating shell can rotate forwards and backwards in a reciprocating mode in the smoke exhaust pipe through back-and-forth pulling of the two steel ropes, smoke in different areas on the same plane in the smoke exhaust pipe can be pumped out at the same time for sampling inspection, a worker does not need to adjust the angle of the smoke detector, and therefore operation is easy, and the detection efficiency is improved. And moreover, the flue gas in a certain stage can be detected at the same time, so that the accuracy of flue gas detection can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of boiler furnace gas detection, in particular to a random inspection device for boiler furnace gas in a power plant. Background Art

[0002] The furnace of a power plant boiler is the core part of the boiler body and plays a vital role. The furnace, also known as the combustion chamber, is the space for fuel combustion in the power plant boiler. It is the key area for converting the chemical energy of the fuel into thermal energy. The combustion of fuel in the furnace will produce high-temperature flue gas. In order to detect whether the combustion flue gas meets the emission standards, a flue gas detector is usually used to detect the combustion flue gas. The detection head of the flue gas detector is inserted into the detection port on the exhaust pipe, and then the gap between the detection port and the detection head of the detector is blocked with a cloth strip to prevent the smoke from leaking.

[0003] When the existing detector is in use, the detection head can only detect the smoke in a certain area in the smoke exhaust pipe, but the smoke components in the middle and edge parts of the smoke exhaust pipe are different. The staff needs to adjust the angle of the detector in order to detect the smoke in different areas of the smoke exhaust pipe. However, this operation is more troublesome and it is difficult to detect the smoke in a certain stage at the same time, which will lead to large errors in smoke detection. Summary of the invention

[0004] The object of the present invention is to provide a gas sampling device for a power plant boiler furnace to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A gas sampling device for a boiler furnace of a power plant, comprising a smoke exhaust pipe connected to the interior of the boiler furnace, a detection port being fixedly penetrated through the outer wall of the smoke exhaust pipe, and a smoke inlet pipe being fixedly penetrated through the outer wall of the smoke exhaust pipe and located above the detection port;

[0007] The outer wall of the smoke exhaust pipe is fixedly connected with two symmetrical fixing mechanisms, a frame is detachably connected between the two fixing mechanisms, the top surface of the frame is provided with an extension mechanism penetrating the detection port, the inner bottom surface of the frame is fixedly connected with a smoking mechanism for extracting smoke from the smoke exhaust pipe, the inner bottom surface of the frame is fixedly connected with a filtering mechanism for filtering smoke, the bottom surface of the frame is fixedly connected with a cooling mechanism for cooling the smoke, and the top surface of the filtering mechanism is fixedly connected with a smoke outlet mechanism for extracting smoke in the filtering mechanism into the smoke exhaust pipe;

[0008] The extension mechanism includes a rectangular shell that is inserted through the detection port, and both sides of one end of the rectangular shell are fixedly connected with L-shaped blocks that are detachably connected to the frame, and a cylindrical shell is rotatably penetrated between the two opposite side surfaces of the other end of the rectangular shell, and a rotating shell is fixed through the bottom end of the outer wall of the cylindrical shell, and the outer wall of the cylindrical shell located in the rotating shell and the rectangular shell is penetrated with a plurality of air holes, and the bottom surface of the rotating shell is penetrated with a plurality of air suction holes that are connected to the interior of the rotating shell at equal intervals.

[0009] Furthermore, a connecting column is fixedly connected to the top of the cylindrical shell, and steel ropes are wound and fixed at both ends of the outer wall of the connecting column. The two steel ropes are wound in opposite directions, and the top surface of the rectangular shell is fixedly connected to two fixing bars that slide through the steel ropes at corresponding positions.

[0010] Furthermore, both ends of one side surface of the frame are fixedly connected with connecting plates which are detachably connected to the fixing mechanism at the corresponding position, the top surface of the frame is fixedly connected with two symmetrical columns, the top ends of the columns are fixedly connected with a circular frame which passes through the L-shaped block at the corresponding position, the inner top end of the circular frame is slidably connected with a pressure plate, and the top surface of the pressure plate is rotatably connected with a bolt which passes through and screws with the top surface of the circular frame at the corresponding position.

[0011] Furthermore, a smoke outlet pipe communicating with the interior of the rectangular shell is fixedly penetrated through one end of the bottom surface of the rectangular shell away from the rotating shell, and the smoking mechanism comprises:

[0012] A dust suction pump is fixedly connected to the inner bottom surface of the frame;

[0013] The conduit is fixedly connected to the input end of the vacuum pump and penetrates and is fixed to the top surface of the frame;

[0014] The first sleeve is slidably sleeved on the top of the outer wall of the catheter;

[0015] Connector 1 is fixedly connected to the top of sleeve 1 and plugged into the smoke outlet pipe;

[0016] The solenoid valve is fixedly connected to the outer wall of the output end of the dust suction pump.

[0017] Further, the filtering mechanism comprises:

[0018] The filter box is fixedly connected to the inner bottom surface of the frame and is fixed through the output end of the dust suction pump;

[0019] A filter plate, detachably connected to the interior of the filter box;

[0020] The round tube is fixed through the side of the filter box and is located above the filter plate.

[0021] Further, the cooling mechanism comprises:

[0022] A cooling box, fixedly connected to the inner bottom surface of the filter box;

[0023] The coil is fixedly connected inside the cooling box, one end of the coil is fixedly connected to the output end of the dust suction pump, and the other end of the coil is fixedly penetrated and fixed to the top surface of the cooling box.

[0024] Furthermore, a water tank is fixedly connected to the bottom surface of the frame, a water pump is fixedly connected to one end of the water tank, a liquid inlet pipe is fixedly connected between the output end of the water pump and the interior of the cooling box, a liquid outlet pipe is fixedly connected between the interior of the water tank and the interior of the cooling box, and the input end of the water pump is fixedly penetrated and fixed to the interior of the water tank.

[0025] Further, the smoke outlet mechanism comprises:

[0026] A sleeve is penetrated and fixed on the top surface of the filter box, and a piston is slidably connected inside the sleeve;

[0027] A smoking pipe is passed through and fixed at the bottom end of the sleeve;

[0028] A connecting pipe is passed through and fixed to the bottom end of the sleeve, and one end of the connecting pipe passes through the top surface of the frame;

[0029] The second sleeve is slidably sleeved on the outer wall of the connecting pipe;

[0030] The second connector is fixedly connected to one end of the second sleeve and plugged into the smoke inlet pipe.

[0031] Furthermore, one-way valves are arranged inside the smoking pipe and the connecting pipe.

[0032] Furthermore, the top end of the piston is fixedly connected with a pull rod which penetrates and slides through the top surface of the sleeve, the top end of the pull rod is fixedly connected with a fixing plate, and an electric push rod is fixedly connected between the top surface of the filter box and the fixing plate.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The rotating shell can be rotated back and forth in the exhaust pipe by pulling the two steel ropes back and forth, and the smoke in different areas on the same plane in the exhaust pipe can be extracted for sampling at the same time. The staff does not need to adjust the angle of the smoke detector. This is simple to operate and can detect the smoke in a certain stage at the same time, thereby improving the accuracy of smoke detection;

[0035] 2. By starting the dust suction pump, the smoke in the smoke exhaust pipe can be sucked into the filter mechanism through the rotating shell, cylindrical shell and rectangular shell. After a certain amount of smoke is sucked into the filter mechanism, the dust suction pump is stopped and the solenoid valve is also closed to prevent the smoke in the filter mechanism from flowing back, thereby avoiding the situation of insufficient smoke in the filter mechanism;

[0036] 3. The dust in the flue gas can be filtered and cooled by the filtering mechanism and the cooling mechanism, which can prevent dust particles from adhering to the detection head of the flue gas detector and prevent the temperature of the flue gas from being too high and affecting the accuracy of the detection;

[0037] 4. The reciprocating movement of the piston can draw the smoke in the filter box into the smoke exhaust pipe, which can prevent excessive smoke in the filter box from causing excessive pressure in the filter box, causing the smoke to leak out and be inhaled by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the smoke exhaust pipe in the present invention;

[0040] Figure 3 It is a schematic diagram of the framework in the present invention;

[0041] Figure 4 It is a schematic diagram of the extension mechanism structure in the present invention;

[0042] Figure 5 It is an enlarged view of point A in the present invention;

[0043] Figure 6 It is a schematic diagram of the structure of the smoking mechanism in the present invention;

[0044] Figure 7 It is a schematic diagram of the structure of the filtering mechanism in the present invention;

[0045] Figure 8 It is a schematic diagram of the cooling mechanism structure in the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the smoke outlet mechanism in the present invention.

[0047] In the figure: 1, smoke exhaust pipe; 11, detection port; 12, smoke inlet pipe; 13, fixing mechanism; 2, frame; 21, connecting plate; 23, column; 24, circular frame; 25, pressing plate; 3, extension mechanism; 31, rectangular shell; 32, L-shaped block; 33, cylindrical shell; 34, air hole; 35, rotating shell; 36, steel rope; 37, fixing strip; 38, smoke outlet pipe; 4, smoking mechanism; 41, dust pump; 42, guide tube; 43, sleeve ; 44. Connector one; 45. Solenoid valve; 5. Filter mechanism; 51. Filter box; 52. Filter plate; 53. Round tube; 6. Cooling mechanism; 61. Cooling box; 62. Coil; 63. Water tank; 64. Water pump; 65. Liquid inlet pipe; 66. Liquid outlet pipe; 7. Smoke outlet mechanism; 71. Sleeve; 72. Smoke pipe; 73. Connecting pipe; 74. Sleeve two; 75. Connector two; 76. Pull rod; 77. Fixing plate; 78. Electric push rod. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1-9 In an embodiment of the present invention, a gas sampling device for a boiler furnace of a power plant comprises a smoke exhaust pipe 1 connected to the interior of the boiler furnace, a detection port 11 is fixedly penetrated through the outer wall of the smoke exhaust pipe 1, a smoke inlet pipe 12 is fixedly penetrated through the outer wall of the smoke exhaust pipe 1 and located above the detection port, two symmetrical fixing mechanisms 13 are fixedly connected to the outer wall of the smoke exhaust pipe 1, a frame 2 is detachably connected between the two fixing mechanisms 13, an extension mechanism 3 penetrating through the detection port 11 is provided on the top surface of the frame 2, a smoking mechanism 4 for extracting smoke from the smoke exhaust pipe 1 is fixedly connected to the inner bottom surface of the frame 2, a filtering mechanism 5 for filtering smoke is fixedly connected to the inner bottom surface of the frame 2, a cooling mechanism 6 for cooling the smoke is fixedly connected to the bottom surface of the frame 2, and a smoke outlet mechanism 7 for extracting smoke in the filtering mechanism 5 into the smoke exhaust pipe 1 is fixedly connected to the top surface of the filtering mechanism 5;

[0050] The extension mechanism 3 includes a rectangular shell 31 which is inserted through the detection port 11, and both sides of one end of the rectangular shell 31 are fixedly connected with L-shaped blocks 32 which are detachably connected to the frame 2, and a cylindrical shell 33 is rotatably penetrated between the two opposite side surfaces of the other end of the rectangular shell 31, and a rotating shell 35 is fixedly penetrated at the bottom end of the outer wall of the cylindrical shell 33, and a plurality of air holes 34 are penetrated through the outer wall of the cylindrical shell 33 located inside the rotating shell 35 and the rectangular shell 31, and a plurality of air intake holes 34 which are connected to the inside of the rotating shell 35 are penetrated at equal intervals on the bottom surface of the rotating shell 35.

[0051] Specifically, when in use, first fix the frame 2 between the two fixing mechanisms 13, align the rotating shell 35 with the rectangular shell 31, then insert the rectangular shell 31 into the detection port 11, and block the gap between the detection port 11 and the rectangular shell 31 with a cloth strip or the like. When the rectangular shell 31 is extended to a suitable length, fix the rectangular shell 31 above the frame 2, and connect the rectangular shell 31 to the smoking mechanism 4. Then the staff inserts the detection head of the smoke detector into the filter mechanism 5, and fixes the smoke detector on the frame 2 with a strap or rope, and then the staff The worker holds the two steel ropes 36 with both hands and pulls them back and forth. The pulled steel ropes 36 can rotate the cylindrical shell 33. Since the two steel ropes 36 are pulled back and forth, the rotating shell 35 can be rotated forward by a certain angle and then reversely by a certain angle, so that the rotating shell 35 reciprocates forward and reversely. Then, by starting the smoking mechanism 4, the smoke in the smoke exhaust pipe 1 can be drawn into the filtering mechanism 5 through the rotating shell 35, the cylindrical shell 33 and the rectangular shell 31. Since the smoke contains dust particles and the smoke temperature is high, these will affect the smoke detector's detection of smoke components. The accuracy of the smoke can be determined by filtering the smoke through the filter mechanism 5 and cooling the smoke through the cooling mechanism 6. Then, by observing the value on the smoke detector, the composition of the smoke in the smoke exhaust pipe 1 can be measured. Since the smoke exhaust pipe 1 is connected to the furnace of the boiler, the composition of the gas in the furnace can be measured. After a certain amount of smoke is drawn into the filter mechanism 5 and the composition is detected, the smoke in the filter mechanism 5 is drawn into the smoke exhaust pipe 1 again through the smoke outlet mechanism 7. The device can make the rotating shell 35 move forward and backward in the smoke exhaust pipe 1 by pulling the two steel ropes 36 back and forth. By repeated rotation, the smoke from different areas on the same plane in the smoke exhaust pipe 1 can be extracted for random inspection at the same time, and the staff does not need to adjust the angle of the smoke detector. This is simple to operate and can detect the smoke in a certain stage at the same time, thereby improving the accuracy of smoke detection. After the detection, the smoke detector is removed from the filter mechanism 5, the rotating shell 35 is rotated and overlapped with the rectangular shell 31, and then the rectangular shell 31 is removed from the frame 2, the frame 2 is removed from the smoke exhaust pipe 1, and then the device is taken to other boiler smoke exhaust pipes 1 for detection.

[0052] Embodiment 1

[0053] like Figure 3-5As shown, in this embodiment, the top of the cylindrical shell 33 is fixedly connected to a connecting column, and both ends of the outer wall of the connecting column are wound and fixed with steel ropes 36, and the two steel ropes 36 are wound in opposite directions. The top surface of the rectangular shell 31 is fixedly connected to two fixing bars 37 that slide through the steel ropes 36 at corresponding positions respectively, and both ends of one side surface of the frame 2 are fixedly connected to connecting plates 21 that are detachably connected to the fixing mechanisms 13 at corresponding positions. The top surface of the frame 2 is fixedly connected to two symmetrical columns 23, and the top of the columns 23 is fixedly connected to a circular frame 24 that penetrates the L-shaped block 32 at the corresponding position, and the inner top of the circular frame 24 is slidably connected to a pressure plate 25, and the top surface of the pressure plate 25 is rotatably connected to a bolt that penetrates and screws through the top surface of the circular frame 24 at the corresponding position.

[0054] In this embodiment, the two connecting plates 21 are first fixed to the fixing mechanisms 13 at corresponding positions, so that the frame 2 can be fixed. Then, the rectangular shell 31 is inserted into the smoke exhaust pipe 1 through the detection port 11. When the rectangular shell 31 is inserted to a certain depth, the two L-shaped blocks 32 are respectively inserted into the circular frames 24 at corresponding positions. Then, the pressure plates 25 at corresponding positions are fixed to the L-shaped blocks 32 by bolts. This can achieve the goal of not requiring the staff to hold the rectangular shell 31 during the smoke extraction process.

[0055] Embodiment 2

[0056] like Figure 6 As shown, in the present embodiment, a smoke outlet pipe 38 communicating with the interior of the rectangular shell 31 is fixedly penetrated at one end of the bottom surface of the rectangular shell 31 away from the rotating shell 35, and the smoking mechanism 4 comprises a dust pump 41, a conduit 42, a sleeve 43, a connector 44, and a solenoid valve 45. The dust pump 41 is fixedly connected to the inner bottom surface of the frame 2, the conduit 42 is fixedly connected to the input end of the dust pump 41, and is penetrated and fixed to the top surface of the frame 2, the sleeve 43 is slidably sleeved on the top end of the outer wall of the conduit 42, the connector 44 is fixedly connected to the top end of the sleeve 43, and is plugged into the smoke outlet pipe 38, and the solenoid valve 45 is fixedly connected to the outer wall of the output end of the dust pump 41.

[0057] In this embodiment, by sliding the sleeve 43 and then inserting the connector 44 on the smoke outlet pipe 38, the smoke in the smoke exhaust pipe 1 can be sucked into the filter mechanism 5 through the rotating shell 35, the cylindrical shell 33 and the rectangular shell 31 by starting the dust suction pump 41. After a certain amount of smoke is sucked into the filter mechanism 5, the dust suction pump 41 is stopped and the solenoid valve 45 is also closed, which can prevent the smoke in the filter mechanism 5 from flowing back, thereby avoiding the situation where the smoke in the filter mechanism 5 is insufficient.

[0058] Embodiment 3

[0059] like Figure 7As shown, in this embodiment, the filtering mechanism 5 includes a filter box 51, a filter plate 52, and a circular tube 53. The filter box 51 is fixedly connected to the inner bottom surface of the frame 2 and is fixed through the output end of the dust suction pump 41. The filter plate 52 is detachably connected to the inside of the filter box 51. The circular tube 53 is fixed through the side of the filter box 51 and is located above the filter plate 52.

[0060] In this embodiment, the detection head of the smoke detector is inserted into the circular tube 53, and the gap between the detection head and the circular tube 53 is blocked with a cloth strip or the like. The smoke drawn into the filter box 51 by the dust pump 41 can be filtered out through the filter plate 52 to filter out dust particles in the smoke, thereby preventing dust particles from adhering to the detection head of the smoke detector and affecting the accuracy of smoke detection.

[0061] Embodiment 4

[0062] like Figure 8 As shown, in this embodiment, the cooling mechanism 6 includes a cooling box 61 and a coil 62. The cooling box 61 is fixedly connected to the inner bottom surface of the filter box 51, and the coil 62 is fixedly connected to the inside of the cooling box 61. One end of the coil 62 is fixedly connected to the output end of the dust suction pump 41, and the other end of the coil 62 is fixedly penetrated and fixed to the top surface of the cooling box 61. A water tank 63 is fixedly connected to the bottom surface of the frame 2, and a water pump 64 is fixedly connected to one end of the water tank 63. A liquid inlet pipe 65 is fixedly connected between the output end of the water pump 64 and the inside of the cooling box 61, a liquid outlet pipe 66 is fixedly connected between the inside of the water tank 63 and the inside of the cooling box 61, and the input end of the water pump 64 is fixedly penetrated and fixed to the inside of the water tank 63.

[0063] In this embodiment, the coolant in the water tank 63 can be pumped into the cooling box 61 by starting the water pump 64, and then flows into the water tank 63 again from the liquid outlet pipe 66, so that the coolant in the cooling box 61 circulates. Since one end of the coil 62 is fixedly connected to the output end of the dust suction pump 41, the smoke drawn out by the dust suction pump 41 enters the coil 62. Since the coil 62 in the cooling box 61 is immersed in the coolant and the coolant circulates, the smoke can be cooled to improve the accuracy of the smoke sampling.

[0064] Embodiment 5

[0065] like Fig. 9As shown, in the present embodiment, the smoke outlet mechanism 7 comprises a sleeve 71, a smoking pipe 72, a connecting pipe 73, a sleeve second 74, and a connecting head second 75. The sleeve 71 penetrates and is fixed on the top surface of the filter box 51, and a piston is slidably connected inside the sleeve 71. The smoking pipe 72 penetrates and is fixed on the bottom end of the sleeve 71, and the connecting pipe 73 penetrates and is fixed on the bottom end of the sleeve 71. One end of the connecting pipe 73 penetrates the top surface of the frame 2, and the sleeve second 74 is slidably sleeved on the outer wall of the connecting pipe 73. The connecting head second 75 is fixedly connected to one end of the sleeve second 74 and is plugged into the smoke inlet pipe 12. Both the smoking pipe 72 and the connecting pipe 73 are provided with a one-way valve. The top end of the piston is fixedly connected to a pull rod 76 that penetrates and slides through the top surface of the sleeve 71, and the top end of the pull rod 76 is fixedly connected to a fixing plate 77. An electric push rod 78 is fixedly connected between the top surface of the filter box 51 and the fixing plate 77.

[0066] In this embodiment, the second connector 75 is connected to the smoke inlet pipe 12. After the smoke composition is detected, the output end of the electric push rod 78 can reciprocate to make the piston in the sleeve 71 move up and down. The piston that reciprocates up and down can draw the smoke in the filter box 51 into the sleeve 71 under the action of two one-way valves, and the smoke in the sleeve 71 can be pressed into the smoke exhaust pipe 1 again through the connecting pipe 73 by moving the piston downward, so as to prevent the smoke in the filter box 51 from being excessively high, causing the pressure in the filter box 51 to be too high, so that the smoke leaks out and is inhaled by the staff.

[0067] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0068] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas sampling device for a boiler furnace of a power plant, comprising a smoke exhaust pipe (1) connected to the interior of the boiler furnace, a detection port (11) being fixedly penetrated through the outer wall of the smoke exhaust pipe (1), and a smoke inlet pipe (12) being fixedly penetrated through the outer wall of the smoke exhaust pipe (1) and located above the detection port (11); Features: The outer wall of the smoke exhaust pipe (1) is fixedly connected to two symmetrical fixing mechanisms (13), a frame (2) is detachably connected between the two fixing mechanisms (13), the top surface of the frame (2) is provided with an extension mechanism (3) penetrating the detection port (11), the inner bottom surface of the frame (2) is fixedly connected to a smoking mechanism (4) for extracting smoke from the smoke exhaust pipe (1), the inner bottom surface of the frame (2) is fixedly connected to a filtering mechanism (5) for filtering the smoke, the bottom surface of the frame (2) is fixedly connected to a cooling mechanism (6) for cooling the smoke, and the top surface of the filtering mechanism (5) is fixedly connected to a smoke outlet mechanism (7) for extracting smoke from the filtering mechanism (5) into the smoke exhaust pipe (1); The extension mechanism (3) comprises a rectangular shell (31) inserted through the detection port (11), both sides of one end of the rectangular shell (31) are fixedly connected with L-shaped blocks (32) detachably connected to the frame (2), a cylindrical shell (33) is rotatably penetrated between two opposite side surfaces of the other end of the rectangular shell (31), a rotating shell (35) is fixedly penetrated at the bottom end of the outer wall of the cylindrical shell (33), a plurality of air holes (34) are penetrated through the outer wall of the cylindrical shell (33) located inside the rotating shell (35) and the rectangular shell (31), and a plurality of air intake holes (34) are penetrated through the bottom surface of the rotating shell (35) at equal intervals and connected to the inside of the rotating shell (35).

2. The power plant boiler furnace gas sampling device according to claim 1 is characterized in that: A connecting column is fixedly connected to the top of the cylindrical shell (33), and steel ropes (36) are wound and fixed at both ends of the outer wall of the connecting column. The two steel ropes (36) are wound in opposite directions. The top surface of the rectangular shell (31) is fixedly connected to two fixing bars (37) that penetrate and slide through the steel ropes (36) at corresponding positions.

3. The power plant boiler furnace gas sampling device according to claim 2 is characterized in that: Both ends of one side surface of the frame (2) are fixedly connected to a connecting plate (21) which is detachably connected to a fixing mechanism (13) at a corresponding position; the top surface of the frame (2) is fixedly connected to two symmetrical columns (23); the top ends of the columns (23) are fixedly connected to a circular frame (24) which penetrates an L-shaped block (32) at a corresponding position; the inner top end of the circular frame (24) is slidably connected to a pressing plate (25); the top surface of the pressing plate (25) is rotatably connected to a bolt which penetrates and is screwed to the top surface of the circular frame (24) at the corresponding position.

4. The power plant boiler furnace gas sampling device according to claim 1 is characterized in that: A smoke outlet pipe (38) communicating with the interior of the rectangular shell (31) is fixedly connected to the bottom surface of the rectangular shell (31) at one end away from the rotating shell (35). The smoking mechanism (4) comprises: A dust suction pump (41) fixedly connected to the inner bottom surface of the frame (2); The conduit (42) is fixedly connected to the input end of the dust suction pump (41) and penetrates and is fixed to the top surface of the frame (2); A sleeve (43) is slidably sleeved on the top of the outer wall of the catheter (42); A connector (44) is fixedly connected to the top of the sleeve (43) and plugged into the smoke outlet pipe (38); The electromagnetic valve (45) is fixedly connected to the outer wall of the output end of the dust suction pump (41).

5. The power plant boiler furnace gas sampling device according to claim 4 is characterized in that: The filtering mechanism (5) comprises: The filter box (51) is fixedly connected to the inner bottom surface of the frame (2) and is fixedly penetrated by the output end of the dust suction pump (41); A filter plate (52) is detachably connected to the interior of the filter box (51); The round tube (53) penetrates and is fixed on the side of the filter box (51) and is located above the filter plate (52).

6. The power plant boiler furnace gas sampling device according to claim 5 is characterized in that: The cooling mechanism (6) comprises: A cooling box (61) is fixedly connected to the inner bottom surface of the filter box (51); The coil (62) is fixedly connected inside the cooling box (61), one end of the coil (62) is fixedly connected to the output end of the dust suction pump (41), and the other end of the coil (62) is fixedly penetrated and fixed to the top surface of the cooling box (61).

7. The power plant boiler furnace gas sampling device according to claim 6 is characterized in that: A water tank (63) is fixedly connected to the bottom surface of the frame (2); a water pump (64) is fixedly connected to one end of the water tank (63); a liquid inlet pipe (65) is fixedly connected between the output end of the water pump (64) and the interior of the cooling box (61); a liquid outlet pipe (66) is fixedly connected between the interior of the water tank (63) and the interior of the cooling box (61); and an input end of the water pump (64) is fixedly connected to the interior of the water tank (63).

8. The power plant boiler furnace gas sampling device according to claim 5, characterized in that: The smoke discharging mechanism (7) comprises: A sleeve (71) is inserted through and fixed on the top surface of the filter box (51), and a piston is slidably connected inside the sleeve (71); A smoking pipe (72) is passed through and fixed to the bottom end of the sleeve (71); A connecting pipe (73) is passed through and fixed to the bottom end of the sleeve (71), and one end of the connecting pipe (73) passes through the top surface of the frame (2); A second sleeve (74) is slidably sleeved on the outer wall of the connecting pipe (73); The second connector (75) is fixedly connected to one end of the second sleeve (74) and plugged into the smoke inlet pipe (12).

9. The power plant boiler furnace gas sampling device according to claim 8, characterized in that: Both the smoking pipe (72) and the connecting pipe (73) are provided with a one-way valve inside.

10. The power plant boiler furnace gas sampling device according to claim 9, characterized in that: The top end of the piston is fixedly connected to a pull rod (76) that slides through the top surface of the sleeve (71), the top end of the pull rod (76) is fixedly connected to a fixing plate (77), and an electric push rod (78) is fixedly connected between the top surface of the filter box (51) and the fixing plate (77).

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