Thermal power plant flue gas on-line monitoring device

Abstract

The thermal power plant flue gas on-line monitoring device comprises a flue gas on-line monitor, a flue gas driving assembly, a flue gas suction pipe and a plurality of gas inlet mechanisms, and the two ends of the flue gas suction pipe communicate with the flue gas driving assembly and the flue gas on-line monitor correspondingly; the two ends of the plurality of gas inlet mechanisms are respectively communicated with a flue gas suction pipe and a flue gas source; the first end of the gas inlet assembly is communicated with the flue gas suction pipe, and a filter part fixing assembly is movably arranged at the second end of the gas inlet assembly and used for fixing a filter part. The air inlet mechanism is provided with the filter part, smoke dust is extracted and filtered through the filter part while the air inlet mechanism sucks smoke, and it is ensured that most particulate matter is removed before the smoke enters the smoke online monitor. The gas inlet mechanism further comprises a filter part fixing assembly, the filter part fixing assembly is movably arranged on the gas inlet assembly, and the filter part can be rapidly disassembled and assembled, so that the maintenance efficiency is improved, the maintenance cost is reduced, and continuous operation of the flue gas online device is guaranteed.

Description

Technical Field

[0001] The disclosed embodiments belong to the technical field of flue gas monitoring in thermal power plants, and specifically relate to an online flue gas monitoring device in a thermal power plant. Background Art

[0002] A thermal power plant refers to a power plant that uses fossil fuels (such as coal, oil, natural gas, etc.) to generate electricity. During the power generation process, the combustion of fossil fuels will produce a large amount of flue gas, which contains a large amount of smoke and other harmful substances. In order to reduce environmental pollution, thermal power plants usually need to treat the flue gas to meet environmental emission standards.

[0003] Existing online flue gas monitoring devices generally filter smoke through filters. However, the filtering effect of the filters is limited, and they are easily clogged and need to be replaced frequently. When replacing the filters of general online flue gas monitoring devices, the filters are not easy to disassemble and install, resulting in high maintenance costs and affecting the continuity of monitoring.

[0004] In view of the above problems, it is necessary to propose an online flue gas monitoring device for a thermal power plant that is reasonably designed and effectively solves the above problems. Summary of the invention

[0005] The embodiment of the present disclosure aims to solve at least one of the technical problems existing in the prior art and provide an online monitoring device for flue gas in a thermal power plant.

[0006] The embodiment of the present disclosure provides an online flue gas monitoring device for a thermal power plant, comprising:

[0007] Flue gas online monitor;

[0008] A smoke driving component and a smoke exhaust pipe, wherein a first end of the smoke exhaust pipe is connected to the smoke driving component, and a second end of the smoke exhaust pipe is connected to the smoke online monitor;

[0009] A plurality of air intake mechanisms, wherein the first ends of the plurality of air intake mechanisms are connected to the smoke exhaust pipe, and the second ends of the plurality of air intake mechanisms are used to be connected to the smoke source; wherein,

[0010] The air intake mechanism includes an air intake assembly, a filter fixing assembly and a filter. The first end of the air intake assembly is connected to the smoke exhaust pipe. The second end of the air intake assembly is movably provided with the filter fixing assembly, and the filter fixing assembly is used to fix the filter.

[0011] Optionally, the air intake assembly includes an air intake connection block, a connection head, a plurality of connection rods, an air intake pipe assembly, a pressure plate and an elastic member;

[0012] The air intake connection block is fixed to the outer side wall of the smoke exhaust pipe;

[0013] The first end of the air intake pipe assembly passes through the air intake connection block and is connected to the smoke exhaust pipe, and the second end of the air intake pipe assembly is fixedly connected to the connector;

[0014] The pressure plate is sleeved and fixed on the outer side wall of the intake pipe assembly;

[0015] The elastic member is sleeved on the outer side wall of the intake pipe assembly, wherein the first end of the elastic member is fixedly connected to the pressure plate, and the second end of the elastic member is fixedly connected to the intake connection block;

[0016] The first ends of the plurality of connecting rods are fixedly connected to the air intake connecting block, and the second ends of the plurality of connecting rods are fixedly connected to the connecting head;

[0017] The first end of the filter element fixing assembly is movably connected to the connecting head, and the second end of the filter element fixing assembly is movably connected to the pressure plate; wherein the filter element is movably connected to the inner side wall of the connecting head.

[0018] Optionally, the air intake pipe assembly includes an air intake bottom pipe, a through pipe and a top air intake pipe;

[0019] The air intake bottom pipe passes through the air intake connection block and is connected with the smoke exhaust pipe;

[0020] The first end of the through pipe is slidably inserted into the inner side wall of the bottom air intake pipe; the second end of the through pipe is slidably inserted into the inner side wall of the top air intake pipe;

[0021] Wherein, the pressure plate is fixed to the outer side wall of the through pipe.

[0022] Optionally, the filter element fixing assembly includes a plurality of hinge rods, a plurality of first hinge blocks, a plurality of second hinge blocks and a plurality of fixing blocks;

[0023] A plurality of the first hinge blocks are fixed to the top of the pressure plate in a circular array, and a plurality of the second hinge blocks are fixed to the outer side wall of the connector in a circular array;

[0024] The first end of the hinge rod is rotatably connected to the first hinge block corresponding to it, and the second end of the hinge rod is rotatably connected to the second hinge block corresponding to it;

[0025] The fixing block is rotatably arranged on the second hinge block, and is used for fixing the filter element.

[0026] Optionally, the fixed block includes a rotating block and a pressing block;

[0027] The rotating block is rotatably arranged on the second hinge block;

[0028] The pressing block is arranged on a side of the rotating block facing the filter element, and is used for being pressed on the filter element.

[0029] Optionally, the smoke drive assembly includes a fixing frame, a blower and a bellows;

[0030] The fixing frame is arranged on the top of the smoke online monitor;

[0031] The first end of the bellows is connected to the blower, and the second end of the bellows is connected to the first end of the smoke exhaust pipe.

[0032] Optionally, the smoke extraction pipe includes a smoke extraction pipe body and an air supply pipe connected to the smoke extraction pipe body;

[0033] The smoke exhaust pipe body is connected to the bellows, and the air supply pipe is connected to the smoke online monitor.

[0034] Optionally, the filter element is a disc-shaped filter.

[0035] Optionally, a top plate is also included, and the top plate is arranged on the top of the flue gas online monitor.

[0036] Optionally, the display is fixed to the top plate and is used to display monitoring data of the flue gas online monitor.

[0037] In the on-line flue gas monitoring device for a thermal power plant of the disclosed embodiment, the flue gas in the flue gas source enters the flue gas extraction pipe through a plurality of air intake mechanisms, and the flue gas in the flue gas extraction pipe is transported to the on-line flue gas monitor and monitored under the driving action of the flue gas driving component, wherein the air intake mechanism is provided with a filter, and the air intake mechanism extracts and filters smoke dust through the filter while inhaling the flue gas, ensuring that most of the particulate matter has been removed from the flue gas before entering the on-line flue gas monitor. The air intake mechanism also includes a filter fixing component, which is movably arranged on the air intake component, and can realize the rapid disassembly and installation of the filter, thereby improving maintenance efficiency, reducing maintenance costs, and ensuring the continuous operation of the on-line flue gas device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of an online flue gas monitoring device for a thermal power plant according to one embodiment of the present disclosure;

[0039] Figure 2 It is a partial three-dimensional structural schematic diagram of an online flue gas monitoring device for a thermal power plant according to one embodiment of the present disclosure;

[0040] Figure 3 It is a schematic diagram of the three-dimensional structure of the air intake mechanism in one embodiment of the present disclosure;

[0041] Figure 4 It is a schematic diagram of the three-dimensional separation structure of the air intake mechanism in one embodiment of the present disclosure;

[0042] Figure 5 It is a schematic diagram of the three-dimensional structure of the top intake pipe in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] like Figures 1 to 5 As shown, an embodiment of the present disclosure provides an online flue gas monitoring device for a thermal power plant, comprising an online flue gas monitor 1 , a flue gas driving assembly, a flue gas extraction pipe 6 and a plurality of air intake mechanisms 62 .

[0045] The flue gas online monitor 1 is used to monitor the flue gas generated during power generation in a thermal power plant.

[0046] The first end of the smoke exhaust pipe 6 is connected to the smoke driving component, and the second end of the smoke exhaust pipe 6 is connected to the smoke online monitor 1.

[0047] The first ends of the plurality of air intake mechanisms 62 are connected to the smoke exhaust pipe 6 , and the second ends of the plurality of air intake mechanisms 62 are used to be connected to the smoke source.

[0048] The air intake mechanism 62 includes an air intake assembly, a filter fixing assembly and a filter 6245. The first end of the air intake assembly is connected to the smoke exhaust pipe 6. The second end of the air intake assembly is movably provided with a filter fixing assembly. The filter 6245 fixing assembly is used to fix the filter. In this embodiment, the filter 6245 can be a disc-shaped filter screen.

[0049] Specifically, in the process of flue gas monitoring, it is first necessary to start the flue gas driving component. The smoke driving component will suck in the smoke through the smoke exhaust pipe 6 and transport it to the interior of the online flue gas monitor 1 for detailed inspection. In this process, a plurality of air intake mechanisms 62 are fixed to the top of the outer wall of the smoke exhaust pipe 6. These air intake mechanisms 62 will effectively extract the smoke while the smoke is being sucked in. In addition, the air intake mechanism 62 will filter and separate the smoke dust through the filter element 6245 during the process of extracting the smoke, ensuring that most of the particulate matter has been removed from the smoke before entering the online flue gas monitor 1.

[0050] The embodiment of the present disclosure discloses an online flue gas monitoring device for a thermal power plant. The flue gas in the flue gas source enters the flue gas extraction pipe through multiple air intake mechanisms. The flue gas in the flue gas extraction pipe is transported to the online flue gas monitor and monitored under the driving action of the flue gas driving component. The air intake mechanism is provided with a filter. The air intake mechanism extracts and filters smoke dust through the filter while inhaling the flue gas, ensuring that most of the particulate matter is removed from the flue gas before entering the online flue gas monitor. The air intake mechanism also includes a filter fixing component, which is movably arranged on the air intake component, and can realize the rapid disassembly and installation of the filter, thereby improving maintenance efficiency, reducing maintenance costs, and ensuring the continuous operation of the online flue gas device.

[0051] For example, Figure 1 As shown, the on-line flue gas monitoring device for a thermal power plant further includes a top plate 2 , which is arranged on the top of the on-line flue gas monitor 1 .

[0052] For example, Figure 1 and Figure 2 As shown, the smoke driving assembly includes a fixing frame 3, a blower 4 and a bellows 5. The fixing frame 3 is arranged on the top of the smoke online monitor 1. The first end of the bellows 5 is connected to the blower 4, and the second end of the bellows 5 is connected to the first end of the smoke exhaust pipe 6.

[0053] Specifically, Figure 1 and Figure 2 As shown, a top plate 2 is fixedly connected to the top of the online flue gas monitor 1, a fixing frame 3 is fixedly connected to the left side of the top of the top plate 2, a blower 4 is fixedly connected to the right side of the fixing frame 3, a bellows 5 is fixedly connected to the output end of the blower 4, and a flue gas exhaust pipe 6 is fixedly connected to the right side of the bellows 5.

[0054] For example, Figure 2 As shown, the smoke exhaust pipe 6 includes a smoke exhaust pipe body 61 and an air supply pipe 63 connected to the smoke exhaust pipe body 61. The smoke exhaust pipe body 61 is connected to the bellows, and the air supply pipe is connected to the smoke online monitor.

[0055] Specifically, during the smoke monitoring process, the blower 4 needs to be started first, and then the bellows 5 starts to work. The bellows 5 sucks the smoke through the smoke exhaust pipe body 61 and transports it to the inside of the smoke online monitor 1 for detailed detection.

[0056] For example, Figure 4 As shown, the air intake assembly includes an air intake connection block 621 , a connection head 6242 , a plurality of connection rods 623 , an air intake pipe assembly, a pressure plate 626 and an elastic member 627 .

[0057] The air intake connection block 621 is fixed to the outer side wall of the smoke exhaust pipe 6 .

[0058] The first end of the air intake pipe assembly passes through the air intake connecting block 621 and is connected to the smoke exhaust pipe 6 , and the second end of the air intake pipe assembly is fixedly connected to the connecting head 6242 .

[0059] The pressure plate 626 is sleeved and fixed on the outer side wall of the intake pipe assembly.

[0060] The elastic member 627 is sleeved on the outer side wall of the intake pipe assembly, wherein a first end of the elastic member 627 is fixedly connected to the pressure plate 626 , and a second end of the elastic member 627 is fixedly connected to the intake connection block 621 .

[0061] The first ends of the plurality of connecting rods 623 are fixedly connected to the air intake connecting block 621 , and the second ends of the plurality of connecting rods 623 are fixedly connected to the connecting head 6242 .

[0062] The first end of the filter element fixing assembly is movably connected to the connector 6242, and the second end of the filter element fixing assembly is movably connected to the pressure plate 626. The inner side wall of the connector 6242 is movably connected with a filter element 6245.

[0063] It should be noted that, in this embodiment, the connecting rod 623 may be a C-shaped connecting rod, and the elastic member 627 may be a spring. There is no limitation on the specific types of the connecting rod 623 and the elastic member 627, and they may be selected according to actual needs.

[0064] For example, Figure 4 and Figure 5 As shown, the air intake pipe assembly includes an air intake bottom pipe 622 , a through pipe 625 and a top air intake pipe 6241 .

[0065] The air intake bottom pipe 622 passes through the air intake connecting block 621 and is connected to the smoke exhaust pipe 6 .

[0066] The first end of the through pipe 625 is slidably inserted into the inner wall of the bottom air intake pipe 622; the second end of the through pipe 625 is slidably inserted into the inner wall of the top air intake pipe 6241. A pressure plate 626 is fixed to the outer wall of the through pipe 625.

[0067] Illustratively, the filter element fixing assembly includes a plurality of hinge rods 6244, a plurality of first hinge blocks 628, a plurality of second hinge blocks, and a plurality of fixing blocks.

[0068] A plurality of first hinge blocks 628 are fixed to the top of the pressure plate 626 in a circular array, and a plurality of second hinge blocks are fixed to the outer side wall of the connecting head 6242 in a circular array.

[0069] The first end of the hinge rod 6244 is rotatably connected to the corresponding first hinge block 628, and the second end of the hinge rod 6244 is rotatably connected to the corresponding second hinge block.

[0070] The fixing block is rotatably disposed on the second hinge block, and is used to fix the filter element 6245 .

[0071] For example, Figure 4 and Figure 5 As shown, the fixed block includes a rotating block 6243 and a pressing block 6246. The rotating block 6243 is rotatably arranged on the second hinge block. The pressing block 6246 is arranged on a side of the rotating block 6243 facing the filter element 6245, and is used to be pressed on the filter element 6245.

[0072] Specifically, Figures 3 to 5 As shown, the air intake mechanism 62 includes an air intake pipe connecting block 621, the inner wall of the air intake pipe connecting block 621 is fixedly connected with an air intake bottom pipe 622, the bottom of the air intake pipe connecting block 621 is fixedly connected to the top of the outer wall of the smoke exhaust pipe body 61, the inner wall of the air intake bottom pipe 622 extends to the inner wall of the smoke exhaust pipe body 61, the top three sides of the air intake pipe connecting block 621 are respectively fixedly connected with C-shaped connecting rods 623, the inner tops of the three C-shaped connecting rods 623 are fixedly connected with top air intake pipes 624, the inner wall of the air intake bottom pipe 622 is slidably connected with a through pipe 625, the outer wall of the through pipe 625 extends to the top outer wall of the air intake bottom pipe 622, and the outer wall top of the through pipe 625 is fixedly connected with a pressure plate 626.

[0073] The outer wall of the through pipe 625 is fixedly connected to a plurality of first hinge blocks 628 in a circular array on one side of the top of the pressure plate 626, the bottom of the pressure plate 626 is fixedly connected to an elastic member 627, the inner wall of the elastic member 627 is sleeved on the outer wall of the through pipe 625, the bottom end of the elastic member 627 is fixedly connected to the top of the air intake pipe connecting block 621, the inner wall of the top air intake pipe 624 is slidably connected to the top of the outer wall of the through pipe 625, the top of the top air intake pipe 624 is fixedly connected to a connector 6242, and the top of the inner wall of the connector 6242 is movably connected to a disc-shaped filter element 6245.

[0074] The outer wall of the connecting head 6242 is fixedly connected with a plurality of rotating blocks 6243 in a circular array, and one side of the bottom of the plurality of rotating blocks 6243 is fixedly connected with a pressure block 6246. The bottoms of the plurality of pressure blocks 6246 are respectively arranged in a circular array on the top of the disc-shaped filter element 6245. The plurality of rotating blocks 6243 are rotatably connected with a hinged rod 6244 on one side away from the connecting head 6242, and the plurality of hinged rods 6244 are rotatably connected to the inner wall of the hinged block 628 on one side away from the rotating block 6243.

[0075] like Figures 1 to 5 As shown, the working principle of the online flue gas monitoring device for a thermal power plant according to the embodiment of the present disclosure is as follows:

[0076] When the device is used, during the flue gas monitoring process, the blower 4 needs to be started first, and then the bellows 5 starts working. The bellows 5 sucks the smoke through the smoke extraction pipe body 61, and transports it to the interior of the online smoke monitor 1 for detailed inspection. During this process, a plurality of air intake mechanisms 62 are fixed to the top of the outer wall of the smoke extraction pipe body 61. These air intake mechanisms 62 will effectively extract the smoke while the smoke is being sucked in. In addition, the air intake mechanisms 62 will filter and separate the smoke dust during the process of extracting the smoke, ensuring that most of the particulate matter has been removed from the smoke before entering the online smoke monitor 1.

[0077] When the holes of the disc-shaped filter element 6245 are clogged with dust and it cannot work normally, the staff needs to take measures to replace or clean it. The specific operation steps are as follows: First, the staff needs to press the pressure plate 626 downward. In the process of pressing downward, the pressure plate 626 will drive the through pipe 625 to move downward. The downward movement of the through pipe 625 will pull the hinged rod 6244 to move downward at the same time through the multiple hinged blocks 628. In the process of moving downward, the hinged rod 6244 will pull the rotating block 6243 to rotate on the outer wall of the connecting head 6242. In the process of rotating the rotating block 6243, the pressure block 6246 on one side of the bottom of the multiple rotating blocks 6243 will be lifted, thereby releasing the limit on the disc-shaped filter element 6245. At this time, the staff can easily remove the disc-shaped filter element 6245 from the inner wall of the connecting head 6242 for replacement or cleaning. This series of operations is simple and convenient, which greatly improves the work efficiency and ensures the normal operation of the equipment.

[0078] When the disc-shaped filter element 6245 is wiped or a new disc-shaped filter element 6245 is installed into the inner wall of the connector 6242, it is only necessary to place the disc-shaped filter element 6245 into the inner wall of the connector 6242, and then reverse the above steps, that is, first loosen the pressure plate 626, and the through pipe 625 moves upward under the action of the elastic member 627, driving the hinge rod 6244 to move upward, and the hinge rod 6244 moves upward and pulls the rotating block 6243 to rotate on the outer wall of the connector 6242, so that the pressure block 6246 on one side of the bottom of the plurality of rotating blocks 6243 re-limits the disc-shaped filter 6245, thereby completing the replacement or cleaning of the disc-shaped filter 6245.

[0079] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the embodiments of the present disclosure, but the embodiments of the present disclosure are not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the embodiments of the present disclosure, and these modifications and improvements are also considered to be within the protection scope of the embodiments of the present disclosure.

Claims

1. An online flue gas monitoring device for a thermal power plant, characterized in that: include: Flue gas online monitor; A smoke driving component and a smoke exhaust pipe, wherein a first end of the smoke exhaust pipe is connected to the smoke driving component, and a second end of the smoke exhaust pipe is connected to the smoke online monitor; A plurality of air intake mechanisms, wherein the first ends of the plurality of air intake mechanisms are connected to the smoke exhaust pipe, and the second ends of the plurality of air intake mechanisms are used to be connected to the smoke source; wherein, The air intake mechanism includes an air intake assembly, a filter fixing assembly and a filter. The first end of the air intake assembly is connected to the smoke exhaust pipe. The second end of the air intake assembly is movably provided with the filter fixing assembly, and the filter fixing assembly is used to fix the filter.

2. The device according to claim 1, characterized in that The air intake assembly includes an air intake connection block, a connection head, a plurality of connection rods, an air intake pipe assembly, a pressure plate and an elastic member; The air intake connection block is fixed to the outer side wall of the smoke exhaust pipe; The first end of the air intake pipe assembly passes through the air intake connection block and is connected to the smoke exhaust pipe, and the second end of the air intake pipe assembly is fixedly connected to the connector; The pressure plate is sleeved and fixed on the outer side wall of the intake pipe assembly; The elastic member is sleeved on the outer side wall of the intake pipe assembly, wherein the first end of the elastic member is fixedly connected to the pressure plate, and the second end of the elastic member is fixedly connected to the intake connection block; The first ends of the plurality of connecting rods are fixedly connected to the air intake connecting block, and the second ends of the plurality of connecting rods are fixedly connected to the connecting head; The first end of the filter element fixing assembly is movably connected to the connecting head, and the second end of the filter element fixing assembly is movably connected to the pressure plate; wherein the filter element is movably connected to the inner side wall of the connecting head.

3. The device according to claim 2, characterized in that The air intake pipe assembly comprises an air intake bottom pipe, a through pipe and a top air intake pipe; The air intake bottom pipe passes through the air intake connection block and is connected with the smoke exhaust pipe; The first end of the through pipe is slidably inserted into the inner side wall of the bottom air intake pipe; the second end of the through pipe is slidably inserted into the inner side wall of the top air intake pipe; Wherein, the pressure plate is fixed to the outer side wall of the through pipe.

4. The device according to claim 3, characterized in that The filter element fixing assembly comprises a plurality of hinge rods, a plurality of first hinge blocks, a plurality of second hinge blocks and a plurality of fixing blocks; A plurality of the first hinge blocks are fixed to the top of the pressure plate in a circular array, and a plurality of the second hinge blocks are fixed to the outer side wall of the connector in a circular array; The first end of the hinge rod is rotatably connected to the first hinge block corresponding to it, and the second end of the hinge rod is rotatably connected to the second hinge block corresponding to it; The fixing block is rotatably arranged on the second hinge block, and is used for fixing the filter element.

5. The device according to claim 4, characterized in that The fixed block includes a rotating block and a pressing block; The rotating block is rotatably arranged on the second hinge block; The pressing block is arranged on a side of the rotating block facing the filter element, and is used for being pressed on the filter element.

6. The device according to claim 3, characterized in that The smoke drive assembly includes a mounting frame, a blower and a bellows; The fixing frame is arranged on the top of the smoke online monitor; The first end of the bellows is connected to the blower, and the second end of the bellows is connected to the first end of the smoke exhaust pipe.

7. The device according to claim 6, characterized in that The smoke exhaust pipe comprises a smoke exhaust pipe body and an air supply pipe connected to the smoke exhaust pipe body; The smoke exhaust pipe body is connected to the bellows, and the air supply pipe is connected to the smoke online monitor.

8. The device according to any one of claims 1 to 7, characterized in that The filter element is a disc-shaped filter screen.

9. The device according to any one of claims 1 to 7, characterized in that: It also includes a top plate, which is arranged on the top of the flue gas online monitor.

10. The device according to claim 9, characterized in that It also includes a display, which is fixed to the top plate and is used to display the monitoring data of the flue gas online monitor.

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