Thermal power plant waste gas sampling device

Abstract

The utility model discloses a thermal power plant waste gas sampling device and relates to the technical field of waste gas sampling. The device comprises two equipment boxes, two centrifugal fans, two air inlet pipes, two mounting plates and a sampling channel, the centrifugal fans are assembled in the equipment boxes, the air inlet pipes are assembled at one ends of the equipment boxes and are communicated with air inlets of the centrifugal fans, and the air inlet pipes are communicated with the air inlets of the mounting plates. The mounting plate is fixedly arranged at one end of the equipment box close to the air inlet pipe; a first channel and a second channel are fixedly arranged at one end of the sampling channel; according to the waste gas sampling device for the thermal power plant, the two centrifugal fans are arranged and assembled on the exhaust channel and the chimney respectively, waste gas in the exhaust channel and the chimney is sampled respectively, namely the waste gas before treatment and the waste gas after treatment are obtained and are independently detected by detection equipment, and therefore sampling of the waste gas of the thermal power plant is conveniently achieved; therefore, the convenience of sampling the waste gas of the thermal power plant is effectively improved.

Description

Technical Field

[0001] This application relates to the field of waste gas sampling, and more particularly to a waste gas sampling device for thermal power plants. Background Technology

[0002] Currently, the exhaust gas from thermal power plants mainly comes from boiler combustion and chimney emissions. The exhaust gas contains a large amount of harmful substances such as sulfur dioxide, nitrogen oxides, and dust, which seriously affect air quality and human health.

[0003] After treatment, the exhaust gas from thermal power plants is emitted through chimneys. Whether the treatment meets the standards requires testing of the exhaust gas, necessitating sampling. However, current technologies for sampling exhaust gas from thermal power plants still have some shortcomings:

[0004] Existing technologies mostly rely on manual sampling of exhaust gases from thermal power plants by testing personnel. Due to the lack of specialized exhaust gas sampling equipment, the sampling operation of exhaust gases from thermal power plants is quite inconvenient. Utility Model Content

[0005] To address the aforementioned problems, this application provides a waste gas sampling device for thermal power plants, which can solve these problems.

[0006] To achieve the objectives of this application, the following technical solution is provided:

[0007] This application provides a waste gas sampling device for thermal power plants, including: an equipment box, a centrifugal fan, an air inlet pipe, a mounting plate, and a sampling channel. Two of each of the equipment box, centrifugal fan, air inlet pipe, and mounting plate are provided. The centrifugal fan is assembled inside the equipment box, the air inlet pipe is assembled at one end of the equipment box and connected to the air inlet of the centrifugal fan, and the mounting plate is fixedly installed at one end of the equipment box near the air inlet pipe.

[0008] One end of the sampling channel is fixedly provided with channel No. 1 and channel No. 2. One end of channel No. 1 is fixedly connected to one side of one of the equipment boxes and connected to the air outlet of one of the centrifugal fans. One end of channel No. 2 is fixedly connected to one side of another equipment box and connected to the air outlet of another centrifugal fan.

[0009] The sampling channel is fixedly equipped with an L-shaped partition plate. The sampling channel is divided into a first chamber and a second chamber by the L-shaped partition plate. The other end of the first channel is connected to the first chamber, and the other end of the second channel is connected to the second chamber.

[0010] The other end of the sampling channel is fixedly provided with a No. 1 flow tube and a No. 2 flow tube. The No. 1 flow tube is connected to the No. 1 chamber, and the No. 2 flow tube is connected to the No. 2 chamber.

[0011] In one possible implementation, two fixing rods are fixedly installed at one end of the equipment box near the air inlet pipe, and one end of the fixing rods is fixedly connected to the outer wall of the mounting plate.

[0012] In one possible implementation, the other end of both device boxes is provided with a number of evenly distributed heat dissipation slots.

[0013] In one possible implementation, a solenoid valve is fitted at one end of each of the two intake pipes, and a sealing ring is fixedly provided on the outer wall of each of the two intake pipes.

[0014] In one possible implementation, a sealing gasket is fixedly provided on one side of each of the two mounting plates, and ear blocks are fixedly provided at the four corners of each of the two mounting plates, with mounting bolts threaded onto the ear blocks.

[0015] In one possible implementation, a second sealing ring is fixedly provided on the outer wall of one end of both the first and second flow tubes.

[0016] Beneficial effects: This application sets up two centrifugal fans, which are respectively installed on the exhaust channel and the chimney, to sample the exhaust gas in the exhaust channel and the chimney separately, that is, to obtain the exhaust gas before treatment and the exhaust gas after treatment, so that the detection equipment can detect the two exhaust gases separately, thereby facilitating the sampling of exhaust gas from thermal power plants and effectively improving the convenience of exhaust gas sampling in thermal power plants. Attached Figure Description

[0017] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 A schematic diagram of the overall structure of a thermal power plant exhaust gas sampling device provided in this application embodiment;

[0019] Figure 2 A cross-sectional structural diagram of the equipment box and channel number one provided in an embodiment of this application;

[0020] Figure 3 Provided for the embodiments of this application Figure 2 Enlarged diagram of part A in the diagram;

[0021] Figure 4 A cross-sectional structural diagram of the sampling channel provided in the embodiments of this application;

[0022] Figure 5 This is a schematic diagram showing the connection between the exhaust gas sampling device, the exhaust channel, and the chimney provided in the embodiments of this application.

[0023] In the diagram, 1. Equipment box; 11. Heat dissipation trough; 12. Fixing rod; 2. Centrifugal fan; 3. Inlet pipe; 31. Solenoid valve; 32. No. 1 sealing ring; 4. Mounting plate; 41. Sealing gasket; 42. Ear block; 43. Mounting bolt; 5. Sampling channel; 51. Channel 1; 52. Channel 2; 53. L-shaped partition plate; 54. Chamber 1; 55. Chamber 2; 56. No. 1 flow pipe; 57. No. 2 flow pipe; 58. No. 2 sealing ring; 10. Boiler; 20. Exhaust channel; 30. Waste gas treatment equipment; 40. Chimney. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0026] Figure 1-5An exhaust gas sampling device for a thermal power plant, provided in this application embodiment, includes: an equipment box 1, a centrifugal fan 2, an inlet pipe 3, a mounting plate 4, a sampling channel 5, a boiler 10, an exhaust channel 20, exhaust gas treatment equipment 30, and a chimney 40. Two copies of the equipment box 1, centrifugal fan 2, inlet pipe 3, and mounting plate 4 are provided. One mounting plate 4 is installed on the exhaust channel 20, and the other mounting plate 4 is installed on the chimney 40. The centrifugal fan 2 is assembled inside the equipment box 1, and the inlet pipe 3 is assembled at one end of the equipment box 1 and connected to... The air inlets of the centrifugal fan 2 are connected, and there are two air inlet pipes 3. One end of the air inlet pipe 3 enters the exhaust channel 20, and the other end of the air inlet pipe 3 enters the chimney 40. The mounting plate 4 is fixedly installed at one end of the equipment box 1 near the air inlet pipe 3. Two fixing rods 12 are fixedly installed at the end of the equipment box 1 near the air inlet pipe 3. One end of the fixing rod 12 is fixedly connected to the outer wall of the mounting plate 4. By setting the fixing rods 12, the fixing rods 12 can support the equipment box 1 and improve the stability of the equipment box 1. The other end of the storage compartment 1 is provided with several evenly distributed heat dissipation slots 11. These slots allow the airflow generated by the centrifugal fan 2 to be discharged outwards. Each of the two intake pipes 3 is equipped with a solenoid valve 31. These valves control the opening and closing of the intake pipes 3. When not sampling exhaust gas, the solenoid valves 31 can be closed. A first-order sealing ring 32 is fixedly installed on the outer wall of each of the two intake pipes 3. This first-order sealing ring 32 allows for... To improve the sealing between the intake pipe 3, the exhaust passage 20, and the chimney 40, a sealing gasket 41 is fixedly provided on one side of each of the two mounting plates 4. By providing the sealing gasket 41, the sealing gasket 41 can improve the stability between the mounting plate 4 and the outer wall of the exhaust passage 20 and the chimney 40. A lug 42 is fixedly provided at each of the four corners of the two mounting plates 4. A mounting bolt 43 is rotatably installed on the lug 42. By providing the lug 42 and the mounting bolt 43, the mounting plate 4 can be installed on the exhaust passage 20 and the chimney 40.

[0027] In one possible implementation, a first channel 51 and a second channel 52 are fixedly installed at one end of the sampling channel 5. One end of the first channel 51 is fixedly connected to one side of one of the equipment boxes 1 and is connected to the air outlet of one of the centrifugal fans 2. One end of the second channel 52 is fixedly connected to one side of another equipment box 1 and is connected to the air outlet of another centrifugal fan 2. When the two mounting plates 4 are respectively installed on the exhaust channel 20 and the chimney 40, the exhaust gas generated by the combustion of the boiler 10 enters the exhaust gas treatment equipment 30 through the exhaust channel 20. After being treated by the exhaust gas treatment equipment 30, the treated exhaust gas is discharged out through the chimney 40. The two centrifugal fans 2 respectively draw the exhaust gas in the exhaust channel 20 and the exhaust gas in the chimney 40, that is, the exhaust gas before treatment and the exhaust gas after treatment. The two kinds of exhaust gas enter the sampling channel 5 through the first channel 51 and the second channel 52.

[0028] In one possible implementation, an L-shaped partition plate 53 is fixedly installed inside the sampling channel 5. The inner cavity of the sampling channel 5 is divided into a first chamber 54 and a second chamber 55 by the L-shaped partition plate 53. The other end of the first channel 51 is connected to the first chamber 54, and the other end of the second channel 52 is connected to the second chamber 55. A first flow tube 56 and a second flow tube 57 are fixedly installed at the other end of the sampling channel 5. The first flow tube 56 is connected to the first chamber 54, and the second flow tube 57 is connected to the second chamber 55. By setting a first flow tube 56 in the sampling channel 5, the sampling channel 5 can achieve the desired effect. Chamber 54 and second chamber 55, as well as first flow pipe 56 and second flow pipe 57 at the end of sampling channel 5, are provided. The waste gas before treatment enters the detection equipment through first chamber 54 and first flow pipe 56, and the waste gas after treatment enters the detection equipment through second chamber 55 and second flow pipe 57. A second sealing ring 58 is fixedly provided on the outer wall of one end of first flow pipe 56 and second flow pipe 57. By providing the second sealing ring 58, the sealing performance between first flow pipe 56 and second flow pipe 57 and the air inlet of the detection equipment can be improved.

[0029] Working principle: When sampling exhaust gas from a thermal power plant, the operator first installs two mounting plates 4 onto the outer walls of the exhaust duct 20 and the chimney 40 respectively using lugs 42 and mounting bolts 43 (see reference). Figure 5 Then, open the two solenoid valves 31 to open the two air inlet pipes 3, and then start the two centrifugal fans 2. The suction generated by the two centrifugal fans 2 draws the exhaust gas in the exhaust channel 20 and the chimney 40 through the two air inlet pipes 3, namely the exhaust gas before treatment and the exhaust gas after treatment. The two kinds of exhaust gas enter the sampling channel 5 through the first channel 51 and the second channel 52, and then enter the two air inlets of the detection equipment through the first chamber 54, the second chamber 55, the first flow pipe 56 and the second flow pipe 57. Alternatively, the two exhaust gas storage tanks can be fixed at the ends of the first flow pipe 56 and the second flow pipe 57, and the two storage tanks can store the two kinds of exhaust gas, thereby conveniently realizing the sampling of exhaust gas from thermal power plants and effectively improving the convenience of exhaust gas sampling from thermal power plants.

[0030] In the embodiments provided in this application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules or units, and may be electrical, mechanical, or other forms.

[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A waste gas sampling device for thermal power plants, characterized in that, include: The equipment box (1), centrifugal fan (2), air inlet pipe (3), mounting plate (4) and sampling channel (5) are provided in two. The centrifugal fan (2), air inlet pipe (3) and mounting plate (4) are installed in two. The centrifugal fan (2) is installed inside the equipment box (1). The air inlet pipe (3) is installed at one end of the equipment box (1) and connected to the air inlet of the centrifugal fan (2). The mounting plate (4) is fixedly installed at one end of the equipment box (1) near the air inlet pipe (3). One end of the sampling channel (5) is fixedly provided with a first channel (51) and a second channel (52). One end of the first channel (51) is fixedly connected to one side of one of the equipment boxes (1) and connected to the air outlet of one of the centrifugal fans (2). One end of the second channel (52) is fixedly connected to one side of another equipment box (1) and connected to the air outlet of another centrifugal fan (2). The sampling channel (5) is fixedly provided with an L-shaped partition plate (53). The sampling channel (5) forms a first chamber (54) and a second chamber (55) through the L-shaped partition plate (53). The other end of the first channel (51) is connected to the first chamber (54), and the other end of the second channel (52) is connected to the second chamber (55). The other end of the sampling channel (5) is fixedly provided with a first flow tube (56) and a second flow tube (57). The first flow tube (56) is connected to the first chamber (54), and the second flow tube (57) is connected to the second chamber (55).

2. The waste gas sampling device for thermal power plants according to claim 1, characterized in that, Two fixing rods (12) are fixedly installed at one end of the equipment box (1) near the air inlet pipe (3), and one end of the fixing rod (12) is fixedly connected to the outer wall of the mounting plate (4).

3. The waste gas sampling device for thermal power plants according to claim 1, characterized in that, The other end of each of the two equipment boxes (1) is provided with several evenly distributed heat dissipation slots (11).

4. The waste gas sampling device for thermal power plants according to claim 1, characterized in that, Each of the two air intake pipes (3) is equipped with a solenoid valve (31) at one end, and a No. 1 sealing ring (32) is fixedly installed on the outer wall of each of the two air intake pipes (3).

5. The waste gas sampling device for thermal power plants according to claim 1, characterized in that, A sealing gasket (41) is fixedly provided on one side of each of the two mounting plates (4), and an ear block (42) is fixedly provided at each of the four corners of the two mounting plates (4). A mounting bolt (43) is rotatably installed on the ear block (42).

6. The waste gas sampling device for thermal power plants according to claim 1, characterized in that, A second sealing ring (58) is fixedly installed on the outer wall of one end of the first flow tube (56) and the second flow tube (57).

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