Flue gas sampling mechanism for thermal power plant

Abstract

The invention relates to the technical field of thermal power plants, and discloses a thermal power plant flue gas sampling mechanism which comprises a flue gas pipe and a gas storage tank, a flue gas inlet is formed in one side of the flue gas pipe, a flue gas inlet pipe is fixedly connected in the flue gas inlet, a connecting port is formed in one side of the gas storage tank, a connecting pipe is fixedly connected in the connecting port, and a gas outlet pipe is fixedly connected in the gas storage tank. A discharging opening is formed in the bottom of the connecting pipe, a collecting assembly in butt joint with the discharging opening is arranged at the bottom of the discharging opening, a first fixing ring is fixedly connected to one end of the smoke inlet pipe, a second fixing ring is fixedly connected to one end of the connecting pipe, and a sealing ring is fixedly connected to the outer side of the circumference of the second fixing ring. According to the device, the smoke inlet pipe and the connecting pipe can be connected more tightly, meanwhile, through cooperative use of an anti-skid block and a threaded rod, a worker can conveniently and rapidly disassemble and assemble the material storage box, and smoke about to enter the gas storage tank can be filtered through a leakage plate.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power plants, in particular to a smoke sampling mechanism for a thermal power plant. Background Art

[0002] The flue gas sampling mechanism of thermal power plants plays a vital role in thermal power plants. It is mainly used to monitor the emission of pollutants in the flue gas in real time to ensure that the emissions meet environmental protection standards. Through the sampling mechanism, the flue gas can be extracted from the emission source and transported to the monitoring equipment for analysis to ensure that the power plant emissions meet environmental protection standards.

[0003] When sampling, it is usually necessary to use connectors to connect the flue gas pipe and the gas tank. However, there must be a tiny gap between the two connectors, making it impossible to achieve closed sampling. For flue gas transported by positive pressure, there is a possibility of flue gas overflow during the sampling process, which can easily cause harm to the samplers. For flue gas transported by negative pressure, a large amount of air is easily absorbed during the sampling process, affecting the quality of the sample gas. In addition, there is a large amount of ash in the transported flue gas, which will enter the gas tank through the pipeline, making the gas tank difficult to clean. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a flue gas sampling mechanism for a thermal power plant, which is mainly used to solve the problem that flue gas overflows during the sampling process and a large amount of ash exists in the transported flue gas. The ash enters the gas tank through the pipeline, making the gas tank difficult to clean.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A flue gas sampling mechanism for a thermal power plant comprises a flue gas pipe and a gas storage tank, wherein a smoke inlet is provided on one side of the smoke pipe, a smoke inlet pipe is fixedly connected to the smoke inlet, a connecting port is provided on one side of the gas storage tank, a connecting pipe is fixedly connected to the connecting port, a feeding port is provided at the bottom of the connecting pipe, a collecting assembly docking with the feeding port is provided at the bottom of the feeding port, a first fixing ring is fixedly connected to one end of the smoke inlet pipe, a second fixing ring is fixedly connected to one end of the connecting pipe, a sealing ring is fixedly connected to the outer circumference of the second fixing ring, and the sealing ring contacts the first fixing ring, a conical block is fixedly connected to one side of the second fixing ring, a sealing pad is fixedly connected to one side of the conical block, and a second inclined surface is provided on one side of the first fixing ring , and the sealing gasket is in contact with the second inclined surface, the circumferential outer wall of the connecting tube is fixedly connected with a plurality of slide rails, a slide plate is movably connected between the plurality of slide rails, an electric push rod is fixedly connected to one side of the slide plate, and the extended end of the electric push rod is fixed to the second fixed ring, a plurality of pull ropes are installed on one side of the slide plate, the circumferential outer wall of the second fixed ring is fixedly connected with a plurality of guide rods, the outer side of the guide rod is movably connected with a second L-shaped plate, and the pull rope is fixed to the second L-shaped plate, a tension spring is sleeved on the outer side of the guide rod, and the two ends of the tension spring are respectively fixed to the second L-shaped plate and the top end of the guide rod, a plurality of wedge blocks are fixedly connected to the circumferential outer wall of the first fixed ring, and the inclined surface at one end of the second L-shaped plate is in contact with the inclined surface of the wedge block.

[0009] Furthermore, a leaking plate is fixedly connected inside the connecting pipe.

[0010] On the basis of the above-mentioned scheme, the collecting component includes a storage box, and the storage box is docked with the discharge port, the leakage plate is located above the storage box, and a through groove is opened on the top of the storage box. The outer walls on both sides of the storage box are fixedly connected with a first L-shaped plate, and the interior of the first L-shaped plate is movably connected with a threaded rod, one end of the threaded rod is fixedly connected with an anti-sliding block, and the anti-sliding block is in contact with the circumferential outer wall of the connecting tube, and one end of the threaded rod is fixedly connected with a knob.

[0011] As a further solution of the present invention, the top inner wall of the storage box is provided with two first inclined surfaces.

[0012] Furthermore, one side of the second fixing ring is fixedly connected to a plurality of guide frames, and the pull rope is passed around the guide frames.

[0013] On the basis of the above-mentioned solution, a second valve is installed on the outer side of the connecting pipe, and a first valve is installed on the outer side of the smoke inlet pipe.

[0014] As a further solution of the present invention, one end of the smoke inlet pipe enters into the smoke pipe and is fixedly connected to a funnel.

[0015] Furthermore, a baffle is fixedly connected to the top end of the guide rod.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a flue gas sampling mechanism for a thermal power plant, which has the following beneficial effects:

[0018] 1. The present invention can not only make the contact between the first fixing ring and the second fixing ring closer through the coordinated use of the conical block, the second inclined surface, the sealing gasket and the sealing ring, but also can make the second L-shaped plate squeeze the inclined surface of the wedge block through the pull rope, so as to make the connection between the first fixing ring and the second fixing ring closer, and further make the connection between the smoke inlet pipe and the connecting pipe closer, so as to avoid the situation that smoke overflows easily at the connection point, and improve the sealing effect of the device.

[0019] 2. The present invention uses the anti-sliding block in conjunction with the threaded rod, which makes it convenient for workers to quickly connect the storage box with the discharge port, and is also convenient for disassembly, saving time and improving the convenience of the device.

[0020] 3. The leakage plate in the present invention can filter the smoke that is about to enter the gas storage tank, and the filtered ash impurities fall into the storage box through the through groove for collection, thereby preventing a large amount of ash from entering the gas storage tank through the connecting pipe and causing difficulty in cleaning. The first inclined surface facilitates the staff to dump the ash impurities collected in the storage box, so that the ash impurities can be moved out along the curvature of the first inclined surface.

[0021] 4. The baffle in the present invention can limit the moving position of the second L-shaped plate, thereby preventing the second L-shaped plate from moving out of the guide rod, thereby improving the stability of the movement of the second L-shaped plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a flue gas sampling mechanism for a thermal power plant proposed by the present invention;

[0023] Figure 2 A partial cross-sectional structural schematic diagram of a flue gas sampling mechanism for a thermal power plant proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the enlarged structure of part A of a flue gas sampling mechanism for a thermal power plant proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the enlarged structure of part B of a flue gas sampling mechanism for a thermal power plant proposed by the present invention;

[0026] Figure 5 This is a schematic cross-sectional structural diagram of a feed port of a flue gas sampling mechanism for a thermal power plant proposed by the present invention;

[0027] Figure 6 This is a schematic cross-sectional structure diagram of a second fixed ring of a flue gas sampling mechanism for a thermal power plant proposed by the present invention.

[0028] In the figure: 1. smoke pipe; 2. smoke inlet pipe; 3. first valve; 4. connecting pipe; 5. gas tank; 6. discharge port; 7. second valve; 8. funnel; 9. storage box; 10. anti-sliding block; 11. threaded rod; 12. first L-shaped plate; 13. tension spring; 14. guide rod; 15. baffle; 16. second L-shaped plate; 17. wedge block; 18. first fixing ring; 19. second fixing ring; 20. guide frame; 21. pull rope; 22. electric push rod; 23. slide plate; 24. slide rail; 25. through groove; 26. first inclined surface; 27. leak plate; 28. sealing ring; 29. ​​conical block; 30. sealing pad; 31. second inclined surface. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-Figure 6A flue gas sampling mechanism for a thermal power plant comprises a flue gas pipe 1 and a gas storage tank 5. A smoke inlet is provided on one side of the flue gas pipe 1, a smoke inlet pipe 2 is welded in the smoke inlet, a connecting port is provided on one side of the gas storage tank 5, a connecting port is welded in the connecting port, the flue gas in the flue gas pipe 1 enters the smoke inlet pipe 2, and then enters the gas storage tank 5 through the connecting pipe 4, a discharge port 6 is provided at the bottom of the connecting pipe 4, a collecting assembly docked therewith is provided at the bottom of the discharge port 6, a first fixing ring 18 is welded at one end of the smoke inlet pipe 2, a second fixing ring 19 is welded at one end of the connecting pipe 4, a sealing ring 28 is bonded to the outer side of the circumference of the second fixing ring 19, and the sealing ring 28 is in contact with the first fixing ring 18, A conical block 29 is welded to one side of the second fixing ring 19, and a sealing gasket 30 is bonded to one side of the conical block 29. A second inclined surface 31 is provided on one side of the first fixing ring 18, and the sealing gasket 30 is in contact with the second inclined surface 31. The conical block 29, the second inclined surface 31, the sealing gasket 30 and the sealing ring 28 are used in coordination to make the contact between the first fixing ring 18 and the second fixing ring 19 closer. A plurality of slide rails 24 are fixed to the circumferential outer wall of the connecting pipe 4 by bolts, and a slide plate 23 is slidably connected between the plurality of slide rails 24. The slide rails 24 can guide the slide plate 23 so that the slide plate 23 can move stably. An electric push rod is fixed to one side of the slide plate 23 by bolts. The second fixing ring 19 is provided with a plurality of pull ropes 21, and the outer circumferential wall of the second fixing ring 19 is fixed with a plurality of guide rods 14 by bolts. The outer side of the guide rod 14 is slidably connected with the second L-shaped plate 16, and the pull rope 21 is fixed with the second L-shaped plate 16. The outer side of the guide rod 14 is sleeved with a tension spring 13, and the two ends of the tension spring 13 are respectively fixed with the second L-shaped plate 16 and the top of the guide rod 14. The tension spring 13 is reset to make the second L-shaped plate 16 move upward along the guide rod 14. The outer circumferential wall of the first fixing ring 18 is welded with a plurality of wedge blocks 17, and the inclined surface at one end of the second L-shaped plate 16 is connected with the wedge block 17. The inclined surfaces of the wedge-shaped block 17 are in contact with each other, and the connecting pipe 4 is connected to the smoke inlet pipe 2 through the first fixing ring 18 and the second fixing ring 19, so that the sealing gasket 30 on the conical block 29 is in close contact with the second inclined surface 31, and the sealing ring 28 is in close contact with the first fixing ring 18, and then the electric push rod 22 is started. The electric push rod 22 is extended to make the slide plate 23 move outward along the slide rail 24, so that the pull rope 21 pulls the second L-shaped plate 16 to move downward along the guide rod 14, and the tension spring 13 is pulled and extended until the inclined surface of the second L-shaped plate 16 is in close contact with the inclined surface of the wedge-shaped block 17, thereby making the connection between the first fixing ring 18 and the second fixing ring 19 tighter.

[0031] It should be noted that the interior of the connecting pipe 4 is fixed with a leak plate 27 by bolts, and the leak plate 27 can filter the smoke that is about to enter the gas storage tank 5. The collecting component includes a storage box 9, and the storage box 9 is connected to the discharge port 6. The leak plate 27 is located above the storage box 9. The ash impurities filtered out by the leak plate 27 fall into the storage box 9 through the through groove 25. The top of the storage box 9 is provided with a through groove 25. The outer walls of both sides of the storage box 9 are fixed with a first L-shaped plate 12 by bolts. The internal thread of the first L-shaped plate 12 is connected to a threaded rod 11. One end of the threaded rod 11 is fixed with an anti-sliding block 10 by bolts, and the anti-sliding block 10 is in contact with the circumferential outer wall of the connecting pipe 4. The coordinated use of the anti-sliding block 10 and the threaded rod 11 makes it convenient for the staff to quickly connect the storage box 9 with the discharge port 6, and at the same time facilitates disassembly and saves time. One end of the threaded rod 11 is fixed with a first L-shaped plate 12 by bolts. A knob is fixed with the bolts to facilitate the staff to rotate the threaded rod 11. Two first inclined surfaces 26 are provided on the top inner wall of the storage box 9. The first inclined surface 26 is convenient for the staff to dump the ash impurities collected in the storage box 9 so that the ash impurities can move out along the curvature of the first inclined surface 26. A plurality of guide frames 20 are fixed to one side of the second fixing ring 19 by bolts, and the pull rope 21 passes around the guide frame 20. The guide frame 20 can guide the pull rope 21 so that the pull rope 21 can move stably in a certain direction. A second valve 7 is installed on the outside of the connecting pipe 4, and a first valve 3 is installed on the outside of the smoke inlet pipe 2. One end of the smoke inlet pipe 2 enters into the smoke pipe 1 and is fixed with a funnel 8 by bolts. A baffle 15 is welded on the top of the guide rod 14. The baffle 15 can limit the moving position of the second L-shaped plate 16 to prevent the second L-shaped plate 16 from moving out of the guide rod 14.

[0032] Working principle of this embodiment: when it is necessary to connect the smoke pipe 1 with the gas storage tank 5, firstly, the connecting pipe 4 and the smoke inlet pipe 2 are connected through the first fixing ring 18 and the second fixing ring 19, so that the sealing gasket 30 on the conical block 29 is in close contact with the second inclined surface 31, and the sealing ring 28 is in close contact with the first fixing ring 18, and then the electric push rod 22 is started, and the electric push rod 22 is extended to make the slide plate 23 move outward along the slide rail 24, so that the pull rope 21 pulls the second L-shaped plate 16 to move downward along the guide rod 14, and the tension spring 13 is pulled and extended until the inclined surface of the second L-shaped plate 16 is tightly connected with the inclined surface of the wedge block 17. Close contact makes the connection between the first fixing ring 18 and the second fixing ring 19 tighter. When it is necessary to sample the flue gas, open the first valve 3 and the second valve 7, and the flue gas in the flue pipe 1 enters the smoke inlet pipe 2 through the funnel 8, and then enters the gas storage tank 5 through the connecting pipe 4. The leak plate 27 filters the ash impurities in the flue gas in the connecting pipe 4, so that the ash impurities fall into the storage box 9 through the through groove 25. When the storage box 9 needs to be disassembled, turn the knob to make the threaded rod 11 drive the anti-sliding block 10 to move, so that the anti-sliding block 10 is separated from the connecting pipe 4, and then the storage box 9 is directly separated from the discharge port 6.

[0033] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0034] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection; it can be a mechanical connection, it can be an electrical connection, or it can be a direct connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description herein, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas sampling mechanism for a thermal power plant, comprising a flue gas pipe (1) and a gas storage tank (5), wherein a smoke inlet is provided on one side of the flue gas pipe (1), a smoke inlet pipe (2) is fixedly connected to the smoke inlet, and a connecting port is provided on one side of the gas storage tank (5), a connecting port is fixedly connected to a connecting pipe (4), characterized in that: The bottom of the connecting tube (4) is provided with a discharge port (6), and the bottom of the discharge port (6) is provided with a collecting assembly docking therewith; one end of the smoke inlet pipe (2) is fixedly connected to a first fixing ring (18), one end of the connecting tube (4) is fixedly connected to a second fixing ring (19), a sealing ring (28) is fixedly connected to the outer circumference of the second fixing ring (19), and the sealing ring (28) is in contact with the first fixing ring (18); one side of the second fixing ring (19) is fixedly connected to a conical block (29), and one side of the conical block (29) is fixedly connected to a sealing gasket (30); one side of the first fixing ring (18) is provided with a second inclined surface (31), and the sealing gasket (30) is in contact with the second inclined surface (31); the outer circumferential wall of the connecting tube (4) is fixedly connected to a plurality of slide rails (24), and the plurality of slide rails (24) are movable between them. A slide plate (23) is connected, one side of the slide plate (23) is fixedly connected to an electric push rod (22), and the extended end of the electric push rod (22) is fixed to a second fixed ring (19), one side of the slide plate (23) is installed with a plurality of pull ropes (21), the circumferential outer wall of the second fixed ring (19) is fixedly connected to a plurality of guide rods (14), the outer side of the guide rod (14) is movably connected to a second L-shaped plate (16), and the pull rope (21) is fixed to the second L-shaped plate (16), the outer side of the guide rod (14) is sleeved with a tension spring (13), and the two ends of the tension spring (13) are respectively fixed to the second L-shaped plate (16) and the top end of the guide rod (14), the circumferential outer wall of the first fixed ring (18) is fixedly connected to a plurality of wedge blocks (17), and the inclined surface of one end of the second L-shaped plate (16) contacts the inclined surface of the wedge block (17).

2. A flue gas sampling mechanism for a thermal power plant according to claim 1, characterized in that: A leaking plate (27) is fixedly connected to the interior of the connecting pipe (4).

3. A flue gas sampling mechanism for a thermal power plant according to claim 2, characterized in that: The collecting assembly comprises a material storage box (9), and the material storage box (9) is connected to the material discharge port (6), the leakage plate (27) is located above the material storage box (9), and a through groove (25) is provided on the top of the material storage box (9), and the outer walls on both sides of the material storage box (9) are fixedly connected to a first L-shaped plate (12), and the interior of the first L-shaped plate (12) is movably connected to a threaded rod (11), one end of the threaded rod (11) is fixedly connected to an anti-sliding block (10), and the anti-sliding block (10) contacts the circumferential outer wall of the connecting pipe (4), and one end of the threaded rod (11) is fixedly connected to a knob.

4. A flue gas sampling mechanism for a thermal power plant according to claim 3, characterized in that: The top inner wall of the material storage box (9) is provided with two first inclined surfaces (26).

5. A flue gas sampling mechanism for a thermal power plant according to claim 1, characterized in that: A plurality of guide frames (20) are fixedly connected to one side of the second fixing ring (19), and the pull rope (21) is passed around the guide frame (20).

6. A flue gas sampling mechanism for a thermal power plant according to claim 1, characterized in that: A second valve (7) is installed on the outer side of the connecting pipe (4), and a first valve (3) is installed on the outer side of the smoke inlet pipe (2).

7. A flue gas sampling mechanism for a thermal power plant according to claim 1, characterized in that: One end of the smoke inlet pipe (2) enters into the smoke pipe (1) and is fixedly connected to a funnel (8).

8. A flue gas sampling mechanism for a thermal power plant according to claim 1, characterized in that: A baffle (15) is fixedly connected to the top end of the guide rod (14).

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