A device for randomly inspecting the gas in the furnace of a power plant boiler

Abstract

The present invention relates to the technical field of boiler furnace gas detection, and specifically relates to a device for randomly inspecting the gas in a power plant boiler furnace. The device includes an exhaust pipe communicated with the inside of the boiler furnace. A detection port is fixedly penetrated through the outer wall of the exhaust pipe, and a smoke inlet pipe is fixedly penetrated through the outer wall of the exhaust pipe. Two symmetrical fixing mechanisms are fixedly connected to the outer wall of the exhaust pipe. A frame is detachably connected between the two fixing mechanisms. An extension mechanism penetrating through the detection port is arranged on the top surface of the frame. In the present invention, by pulling the two steel ropes back and forth, the rotating shell can rotate back and forth in the exhaust pipe in both positive and negative directions, and the flue gas in different regions on the same plane in the exhaust pipe can be simultaneously extracted for random inspection. It is not necessary for the staff to adjust the angle of the flue gas detector. In this way, the operation is simple, and the flue gas can be detected at the same time within a certain stage, thereby improving the accuracy of flue gas detection.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler furnace gas detection, and specifically to a sampling device for boiler furnace gas in a power plant. Background Technique

[0002] The furnace of a power plant boiler is the core part of the boiler body and plays a crucial role. The furnace, also known as the combustion chamber, is the space in the power plant boiler for fuel combustion. It is the key area for converting the chemical energy of the fuel into heat energy. High-temperature flue gas is produced during fuel combustion in the furnace. To detect whether the combustion flue gas meets the emission standards, currently, a flue gas detector is usually used to detect the combustion flue gas. By inserting the detection head of the flue gas detector into the detection port on the exhaust pipe, and then using a cloth strip or the like to block the gap between the detection port and the detection head of the detector to prevent flue gas leakage.

[0003] When the existing detectors are in use currently, since the detection head can only detect the flue gas in a certain area of the exhaust pipe, but the flue gas components in the middle and edge parts of the exhaust pipe are different. It is necessary for the staff to adjust the angle of the detector so as to detect the flue gas in different areas of the exhaust pipe. However, such operation is relatively troublesome, and it is difficult to detect the flue gas in a certain stage at the same time. Therefore, it will lead to a large error in flue gas detection. Summary of the Invention

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

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

[0006] A sampling device for boiler furnace gas in a power plant, including an exhaust pipe communicated with the inside of the boiler furnace. A detection port is fixedly penetrated through the outer wall of the exhaust pipe, and a smoke inlet pipe is fixedly penetrated through the outer wall of the exhaust pipe and located above the detection port;

[0007] Two symmetrical fixing mechanisms are fixedly connected to the outer wall of the exhaust pipe. A frame is detachably connected between the two fixing mechanisms. An extension mechanism penetrating through the detection port is arranged on the top surface of the frame. A smoking mechanism for extracting the flue gas in the exhaust pipe is fixedly connected to the inner bottom surface of the frame. A filtering mechanism for filtering the flue gas is fixedly connected to the inner bottom surface of the frame. A cooling mechanism for cooling the flue gas is fixedly connected to the bottom surface of the frame. A smoke outlet mechanism for pumping the flue gas in the filtering mechanism into the exhaust pipe is fixedly connected to the top surface of the filtering mechanism;

[0008] The extension mechanism includes a rectangular shell inserted through the detection port. On both sides of one end of the rectangular shell, there are fixedly connected L-shaped blocks detachably connected to the frame. Between the opposite side surfaces of the other end of the rectangular shell, a cylindrical shell is rotatably arranged through. At the bottom end of the outer wall of the cylindrical shell, a rotating shell is fixedly penetrated. On the outer walls of the cylindrical shell located inside the rotating shell and the rectangular shell, a number of air holes are penetrated and opened. On the bottom surface of the rotating shell, a plurality of suction holes communicating with the inside of the rotating shell are penetrated at equal intervals.

[0009] Furthermore: A connecting column is fixedly connected to the top end of the cylindrical shell. Steel ropes are wound and fixed to both ends of the outer wall of the connecting column. The winding directions of the two steel ropes are opposite. Two fixing strips through which the corresponding steel ropes slide are fixedly connected to the top surface of the rectangular shell.

[0010] Furthermore: At both ends of one side surface of the frame, there are fixedly connected connecting plates detachably connected to the corresponding fixing mechanisms. Two symmetric columns are fixedly connected to the top surface of the frame. At the top end of the column, a return frame through which the corresponding L-shaped block penetrates is fixedly connected. A pressing plate is slidably connected to the inner top end of the return frame. A bolt that penetrates and is screwed to the top surface of the corresponding return frame is rotatably connected to the top surface of the pressing plate.

[0011] Furthermore: At one end of the bottom surface of the rectangular shell away from the rotating shell, a smoke outlet pipe communicating with the inside of the rectangular shell is fixedly penetrated. The smoking mechanism includes:

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

[0013] A conduit, fixedly connected to the input end of the dust suction pump and fixedly penetrated through the top surface of the frame;

[0014] A sleeve one, slidably sleeved on the top end of the outer wall of the conduit;

[0015] A connector one, fixedly connected to the top end of the sleeve one and inserted into the smoke outlet pipe;

[0016] An electromagnetic valve, fixedly connected to the outer wall of the output end of the dust suction pump.

[0017] Furthermore: The filtering mechanism includes:

[0018] A filter box, fixedly connected to the inner bottom surface of the frame and fixedly penetrated through the output end of the dust suction pump;

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

[0020] A round pipe, fixedly penetrated through the side surface of the filter box and located above the filter plate.

[0021] Furthermore: The cooling mechanism includes:

[0022] The cooling box is fixedly connected to the inner bottom surface of the filtering box;

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

[0024] Furthermore, a water tank is fixedly connected to the bottom surface of the frame. One end of the water tank is fixedly connected to a water pump. A liquid inlet pipe is fixedly connected between the output end of the water pump and the inside of the cooling box. A liquid outlet pipe is fixedly connected between the inside of the water tank and the inside of the cooling box. The input end of the water pump penetrates and is fixedly connected to the inside of the water tank.

[0025] Furthermore, the smoke discharging mechanism includes:

[0026] A sleeve is penetrated and fixedly connected to the top surface of the filtering box, and a piston is slidably connected inside the sleeve;

[0027] A smoking pipe is penetrated and fixedly connected to the bottom end of the sleeve;

[0028] A connecting pipe is penetrated and fixedly connected to the bottom end of the sleeve, and one end of the connecting pipe penetrates the top surface of the frame;

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

[0030] A second connecting head is fixedly connected to one end of the second sleeve and is inserted into the smoke inlet pipe.

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

[0032] Furthermore, a pull rod that penetrates and slides on the top surface of the sleeve is fixedly connected to the top end of the piston. A fixing plate is fixedly connected to the top end of the pull rod. An electric push rod is fixedly connected between the top surface of the filtering box and the fixing plate.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. By pulling the two steel ropes back and forth, the rotating shell can rotate reciprocally in the smoke discharging pipe in both forward and reverse directions, and the flue gas in different regions on the same plane in the smoke discharging pipe can be simultaneously extracted for sampling inspection. It is not necessary for the staff to adjust the angle of the flue gas detector. In this way, the operation is simple, and the flue gas can be detected at a certain stage at the same time, thereby improving the accuracy of flue gas detection;

[0035] 2. By starting the dust suction pump, the flue gas in the exhaust pipe can be drawn into the filtering mechanism through the rotating shell, cylindrical shell and rectangular shell. After a certain amount of flue gas is drawn into the filtering mechanism, stop the dust suction pump and close the solenoid valve, which can prevent the backflow of the flue gas in the filtering mechanism, thus avoiding the situation of insufficient flue gas volume in the filtering mechanism;

[0036] 3. The filtering mechanism and the cooling mechanism can filter the dust in the flue gas and cool the flue gas, 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 to affect the detection accuracy;

[0037] 4. By the reciprocating movement of the piston, the flue gas in the filtering box can be drawn into the exhaust pipe, which can prevent the excessive flue gas in the filtering box from causing too much pressure in the filtering box and making the flue gas leak out and be inhaled by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0042] Figure 5 is an enlarged view at A in the present invention;

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

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

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

[0046] Figure 9 is a schematic diagram of the structure 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, rectangular 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 suction pump; 42, conduit; 43, sleeve one; 44, connector one; 45, solenoid valve; 5, filtering mechanism; 51, filter box; 52, filter plate; 53, round pipe; 6, cooling mechanism; 61, cooling box; 62, coil pipe; 63, water tank; 64, water pump; 65, liquid inlet pipe; 66, liquid outlet pipe; 7, smoke outlet mechanism; 71, sleeve; 72, smoking pipe; 73, connecting pipe; 74, sleeve two; 75, connector two; 76, pull rod; 77, fixing plate; 78, electric push rod. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] Please refer to Figures 1-9 , in the embodiment of the present invention, a device for randomly inspecting the gas in the furnace of a power plant boiler includes a smoke exhaust pipe 1 communicated with the inside 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 above the detection port. Two symmetric 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 the detection port 11 is arranged on the top surface of the frame 2. A smoking mechanism 4 for pumping the flue gas in the smoke exhaust pipe 1 is fixedly connected to the inner bottom surface of the frame 2. A filtering mechanism 5 for filtering the flue gas is fixedly connected to the inner bottom surface of the frame 2. A cooling mechanism 6 for cooling the flue gas is fixedly connected to the bottom surface of the frame 2. A smoke outlet mechanism 7 for pumping the flue gas 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 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 arranged through the opposite sides of the other end of the rectangular shell 31. A rotating shell 35 is fixedly penetrated through the bottom end of the outer wall of the cylindrical shell 33. A plurality of air holes 34 are penetrated and fixed through the outer walls of the cylindrical shell 33 located in the rotating shell 35 and the rectangular shell 31. A plurality of suction holes 34 communicated with the inside of the rotating shell 35 are penetrated through the bottom surface of the rotating shell 35 at equal intervals.

[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 extends to an appropriate length, fix the rectangular shell 31 above the frame 2 and connect the rectangular shell 31 with the smoking mechanism 4. Then, the staff inserts the detection head of the flue gas detector into the filtering mechanism 5 and fixes the flue gas detector on the frame 2 by using a binding band or a rope. Then, the staff holds the two steel ropes 36 with both hands and pulls them back and forth. The pulled steel ropes 36 can make the cylindrical shell 33 rotate. 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 rotated backward by a certain angle, so that the rotating shell 35 rotates back and forth in a reciprocating manner. Then, by starting the smoking mechanism 4, the flue gas in the 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 flue gas contains dust particles and the temperature of the flue gas is relatively high, these will affect the accuracy of the flue gas detector in detecting the flue gas components. The flue gas can be filtered by the filtering mechanism 5, and at the same time, the flue gas can be cooled by the cooling mechanism 6. Then, by observing the values on the flue gas detector, the components of the flue gas in the exhaust pipe 1 can be measured. Since the exhaust pipe 1 is communicated with the boiler furnace, the components of the gas in the furnace can be measured. When a certain amount of flue gas is drawn into the filtering mechanism 5 and the components are detected, the flue gas in the filtering mechanism 5 is drawn into the exhaust pipe 1 again through the smoke discharging mechanism 7. The device can make the rotating shell 35 rotate back and forth in a reciprocating manner in the exhaust pipe 1 by pulling the two steel ropes 36 back and forth, and can simultaneously extract the flue gas in different areas on the same plane in the exhaust pipe 1 for spot checks, without the staff adjusting the angle of the flue gas detector. Such an operation is simple, and the flue gas can be detected at the same time during a certain stage, so as to improve the accuracy of the flue gas detection. After the detection is completed, remove the flue gas detector from the filtering mechanism 5, rotate the rotating shell 35 to coincide with the rectangular shell 31, then remove the rectangular shell 31 from the frame 2, remove the frame 2 from the exhaust pipe 1, and then take the device to the exhaust pipe 1 of other boilers for detection.

[0052] Embodiment 1

[0053] As Figures 3-5As shown, in this embodiment, a connecting column is fixedly connected to the top end of the cylindrical shell 33. Steel ropes 36 are wound and fixed to both ends of the outer wall of the connecting column. The winding directions of the two steel ropes 36 are opposite. Two fixing strips 37 through which the corresponding steel ropes 36 slide are fixedly connected to the top surface of the rectangular shell 31. Connecting plates 21 detachably connected to the fixing mechanisms 13 at the corresponding positions are fixedly connected to both ends of one side surface of the frame 2. Two symmetric columns 23 are fixedly connected to the top surface of the frame 2. A return frame 24 through which the corresponding L-shaped blocks 32 pass is fixedly connected to the top end of the column 23. A pressing plate 25 is slidably connected to the inner top end of the return frame 24. A bolt that passes through and is screwed with the top surface of the corresponding return frame 24 is rotatably connected to the top surface of the pressing plate 25.

[0054] In this embodiment, first, the two connecting plates 21 are respectively fixed to the fixing mechanisms 13 at the 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 corresponding return frames 24, and then the pressing plates 25 at the corresponding positions are fixed to the L-shaped blocks 32 through bolts, so that it is not necessary for the staff to hold the rectangular shell 31 during the process of extracting smoke.

[0055] Embodiment Two

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

[0057] In this embodiment, by sliding the sleeve one 43 and then inserting the connector one 44 into the smoke outlet pipe 38, 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 by starting the dust suction pump 41. When a certain amount of smoke is drawn into the filtering mechanism 5, the dust suction pump 41 is stopped and the solenoid valve 45 is also closed, which can prevent the smoke in the filtering mechanism 5 from flowing back, thereby avoiding the situation of insufficient smoke volume in the filtering mechanism 5.

[0058] Embodiment Three

[0059] As Figure 7As shown, in this embodiment, the filtering mechanism 5 includes a filtering box 51, a filter plate 52, and a circular tube 53. The filtering 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. The filter plate 52 is detachably connected to the inside of the filtering box 51. The circular tube 53 is fixedly penetrated through the side surface of the filtering box 51 and is located above the filter plate 52.

[0060] In this embodiment, by inserting the detection head of the flue gas detector into the circular tube 53 and blocking the gap between the detection head and the circular tube 53 with a cloth strip or the like, the flue gas drawn into the filtering box 51 by the dust suction pump 41 can filter out the dust particles in the flue gas through the filtering of the filter plate 52, which can prevent the dust particles from adhering to the detection head of the flue gas detector and affecting the accuracy of flue gas detection.

[0061] Embodiment Four

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

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

[0064] Embodiment Five

[0065] As Figure 9As shown, in this embodiment, the smoke outlet mechanism 7 includes a sleeve 71, a smoking pipe 72, a connecting pipe 73, a second sleeve 74, and a second connector 75. The sleeve 71 is fixedly penetrated through the top surface of the filter box 51. A piston is slidably connected inside the sleeve 71. The smoking pipe 72 is fixedly penetrated through the bottom end of the sleeve 71. The connecting pipe 73 is fixedly penetrated through the bottom end of the sleeve 71. One end of the connecting pipe 73 penetrates through the top surface of the frame 2. The 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 is inserted into the smoke inlet pipe 12. One-way valves are provided inside both the smoking pipe 72 and the connecting pipe 73. The top end of the piston is fixedly connected to a pull rod 76 that slidably penetrates through the top surface of the sleeve 71. 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, when the second connector 75 is connected to the smoke inlet pipe 12, after the flue gas components are detected, by reciprocating the output end of the electric push rod 78, the piston inside the sleeve 71 can move up and down reciprocally. The reciprocally moving piston can draw the flue gas in the filter box 51 into the sleeve 71 under the action of the two one-way valves, and press the flue gas in the sleeve 71 into the exhaust pipe 1 again through the downward movement of the piston, which can prevent the excessive flue gas in the filter box 51 from causing excessive pressure in the filter box 51 and resulting in the leakage of flue gas and being inhaled by the staff.

[0067] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0068] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments 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 into and inserted into the detection port (11); both sides of one end of the rectangular shell (31) are fixedly connected to an L-shaped block (32) detachably connected to the frame (2); a cylindrical shell (33) is rotatably arranged between two opposite side surfaces of the other end of the rectangular shell (31); a rotating shell (35) is fixedly arranged 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); a plurality of air intake holes (34) communicating with the interior of the rotating shell (35) are penetrated through the bottom surface of the rotating shell (35) at equal intervals; a connecting column is fixedly connected to the top end of the cylindrical shell (33); 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; and two fixing bars (37) are fixedly connected to the top surface of the rectangular shell (31) and are respectively penetrated and slid through the steel ropes (36) at corresponding positions.

2. The power plant boiler furnace gas sampling device according to claim 1 is characterized in that: Both ends of one side surface of the frame (2) are fixedly connected to a connecting plate (21) 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) penetrating 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 penetrating and screwed to the top surface of the circular frame (24) at the corresponding position.

3. The power plant boiler furnace gas sampling device according to claim 2 is characterized in that: 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). 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 is fixedly penetrated through the top surface of the frame (2); A sleeve (43) is slidably sleeved on the top of the outer wall of the catheter (42); Connector 1 (44) is fixedly connected to the top of sleeve 1 (43) and plugged into the smoke outlet pipe (38); The solenoid valve (45) is fixedly connected to the outer wall of the output end of the dust suction pump (41).

4. The power plant boiler furnace gas sampling device according to claim 3 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) detachably connected to the interior of the filter box (51); The circular tube (53) penetrates and is fixed to the side of the filter box (51) and is located above the filter plate (52).

5. The power plant boiler furnace gas sampling device according to claim 4 is characterized in that: The cooling mechanism (6) comprises: A cooling box (61) fixedly connected to the inner bottom surface of the filter box (51); The coil (62) is fixedly connected to the interior 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 by the top surface of the cooling box (61).

6. The power plant boiler furnace gas sampling device according to claim 5 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).

7. The power plant boiler furnace gas sampling device according to claim 6 is characterized in that: The smoke discharging mechanism (7) comprises: A sleeve (71) is penetrated 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 inserted through and fixed to the bottom end of the sleeve (71); A connecting tube (73) is passed through and fixed to the bottom end of the sleeve (71), and one end of the connecting tube (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).

8. The power plant boiler furnace gas sampling device according to claim 7 is characterized in that: Both the smoking pipe (72) and the connecting pipe (73) are provided with a one-way valve inside.

9. The power plant boiler furnace gas sampling device according to claim 8, characterized in that: 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), 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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