Smoke exhaust device for thermal power plant

Abstract

The utility model relates to the technical field of thermal power plant smoke exhaust, and discloses a thermal power plant smoke exhaust device which comprises a thermal power plant smoke exhaust cylinder body, and a first cleaning ring and a second cleaning ring are sequentially arranged on the side wall of an inner cavity of the thermal power plant smoke exhaust cylinder body from top to bottom in a sliding mode. The first cleaning ring and the second cleaning ring are connected through a fixing rod, a limiting panel is fixedly installed on the side wall of an inner cavity of the thermal power plant smoke exhaust cylinder body, a connecting cylinder is fixedly installed at the upper end of the limiting panel, and the limiting panel is fixedly connected with the limiting panel through cooperation of the connecting cylinder, a piston, a threaded column and a connecting unit. The connecting unit drives the first cleaning ring and the second cleaning ring to slide along the side wall of the inner cavity of the thermal power plant smoke exhaust barrel body together, the first cleaning ring and the second cleaning ring scrape the side wall of the inner cavity of the thermal power plant smoke exhaust barrel body, dust attached to the inner wall of the inner cavity of the thermal power plant smoke exhaust barrel body is cleaned, and the effect that in the smoke exhaust process, dust is removed is achieved. And dust on the side wall of the inner cavity of the thermal power plant smoke exhaust cylinder body can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust in thermal power plants, in particular to a smoke exhaust device in thermal power plants. Background Art

[0002] A thermal power plant is a plant that uses combustibles (such as coal) as fuel to produce electricity. Its basic production process is: when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] There are a lot of dust particles in the smoke from thermal power plants. When the smoke drifts to the outside, it will adhere to the inner wall of the flue. It is difficult to scrape off the dust on the inner wall of the flue and then exhaust it to the outside with the smoke. Therefore, we propose a smoke exhaust device for thermal power plants. Utility Model Content

[0004] The utility model provides a smoke exhaust device for a thermal power plant, which has the beneficial effect of scraping and exhausting some dust attached to the side wall of the flue inner cavity during smoke exhaust, and solves the problems raised in the above background technology.

[0005] The utility model provides the following technical solutions: a smoke exhaust device for a thermal power plant, comprising a thermal power plant smoke exhaust chimney body, a first cleaning ring and a second cleaning ring are slidably arranged on the inner cavity side wall of the thermal power plant smoke exhaust chimney body from top to bottom in sequence, the first cleaning ring and the second cleaning ring are connected by a fixing rod, a limiting panel is fixedly installed on the inner cavity side wall of the thermal power plant smoke exhaust chimney body, a connecting tube is fixedly installed on the upper end of the limiting panel, and a driving unit which can drive the first cleaning ring and the second cleaning ring to slide along the inner cavity side wall of the thermal power plant smoke exhaust chimney body is arranged on the connecting tube.

[0006] As an optional solution of the smoke exhaust device of a thermal power plant of the utility model, the driving unit includes a piston slidably arranged on a connecting cylinder and a threaded column rotatably arranged on the upper end of the piston, and the threaded column is connected to the first cleaning ring through a connecting unit.

[0007] As an optional solution of the smoke exhaust device of a thermal power plant of the utility model, a first spring is fixedly connected between the bottom wall of the connecting cylinder and the piston, and an inert gas is placed in the space below the piston.

[0008] As an optional solution of the smoke exhaust device of a thermal power plant of the utility model, a connecting panel is fixedly installed on the inner cavity side wall of the connecting cylinder, and the connecting panel is threadedly connected to the threaded column.

[0009] As an optional solution for the smoke exhaust device of a thermal power plant described in the utility model, the connecting unit includes a limiting rod fixedly installed on the upper end of the threaded column and a movable rod arranged on the limiting rod, one end of the movable rod is fixedly installed with a limiting shaft, and one end of the limiting shaft is fixedly connected to the side wall of the first cleaning ring.

[0010] As an optional solution of the smoke exhaust device of a thermal power plant described in the utility model, wherein: a connecting groove is opened on the limit rod, the movable rod is slidably arranged on the connecting groove, and a second spring is arranged between the movable rod and the connecting groove.

[0011] The utility model has the following beneficial effects:

[0012] 1. With the cooperation of the connecting tube, the piston, the threaded column and the connecting unit, the connecting unit drives the first cleaning ring and the second cleaning ring to slide along the inner cavity side wall of the smoke exhaust chimney body of the thermal power plant. The first cleaning ring and the second cleaning ring will scrape the inner cavity side wall of the smoke exhaust chimney body of the thermal power plant to clean the dust attached to the inner wall, thereby achieving the effect of cleaning the dust on the inner cavity side wall of the smoke exhaust chimney body of the thermal power plant during the smoke exhaust process.

[0013] 2. With the cooperation of the piston, the threaded column, the connecting panel, the limit rod, the movable rod, the limit shaft, the first cleaning ring and the second cleaning ring, the first cleaning ring and the second cleaning ring can rotate themselves during the longitudinal displacement, and the inner cavity side wall of the smoke exhaust chimney body of the thermal power plant can be further scraped and cleaned, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the main structure of the smoke exhaust chimney of a thermal power plant.

[0016] Figure 3 This is a schematic diagram of the structure of the drive unit of the utility model.

[0017] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle.

[0018] In the figure: 1. main body of the smoke exhaust chimney of a thermal power plant; 2. first cleaning ring; 3. second cleaning ring; 4. fixing rod; 5. connecting tube; 6. limiting panel; 7. driving unit; 71. piston; 72. first spring; 73. threaded column; 74. connecting panel; 75. connecting unit; 751. limiting rod; 752. limiting shaft; 753. movable rod; 754. connecting groove; 755. second spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] See also Figure 1-4 A smoke exhaust device for a thermal power plant comprises a smoke exhaust chimney body 1 of a thermal power plant, a first cleaning ring 2 and a second cleaning ring 3 are slidably arranged on the inner cavity side wall of the smoke exhaust chimney body 1 of the thermal power plant from top to bottom in sequence, the first cleaning ring 2 and the second cleaning ring 3 are connected by a fixing rod 4, and through the setting of the fixing rod 4, the first cleaning ring 2 and the second cleaning ring 3 can move synchronously, a limiting panel 6 is fixedly installed on the inner cavity side wall of the smoke exhaust chimney body 1 of the thermal power plant, a connecting tube 5 is fixedly installed on the upper end of the limiting panel 6, and a driving unit 7 is arranged on the connecting tube 5, which can drive the first cleaning ring 2 and the second cleaning ring 3 to slide along the inner cavity side wall of the smoke exhaust chimney body 1 of the thermal power plant.

[0022] The driving unit 7 includes a piston 71 slidably disposed on the connecting tube 5 and a threaded column 73 rotatably disposed on the upper end of the piston 71 . The threaded column 73 is connected to the first cleaning ring 2 via a connecting unit 75 .

[0023] A first spring 72 is fixedly connected between the bottom wall of the connecting tube 5 and the piston 71 , and an inert gas is placed in the space below the piston 71 . The inert gas can push the piston 71 due to its thermal expansion characteristics.

[0024] In this embodiment: when the smoke exhaust pipe body 1 of the thermal power plant is exhausting smoke, the smoke will be discharged along its inner cavity, and the smoke will carry a large amount of heat. When the smoke passes through the connecting tube 5, the temperature of its inner cavity space will gradually increase. At this time, the inert gas placed in the space below the piston 71 will expand due to heat. When the inert gas expands, it will push the piston 71 to slide along the inner cavity of the connecting tube 5. The piston 71 will move longitudinally with the threaded column 73 and the connecting unit 75. The connecting unit 75 will drive the first cleaning ring 2 and the second cleaning ring 3 to slide along the inner cavity side wall of the smoke exhaust pipe body 1 of the thermal power plant. During the sliding process The first cleaning ring 2 and the second cleaning ring 3 will scrape the inner cavity side wall of the power plant smoke exhaust chimney body 1 to clean the dust attached to its inner wall. When the power plant smoke exhaust chimney body 1 is not exhausting smoke, the inert gas placed in the space below the piston 71 will return to its initial state. At this time, the connecting unit 75 and the first cleaning ring 2 and the second cleaning ring 3 will return to their initial positions. At this time, the first cleaning ring 2 and the second cleaning ring 3 will scrape the inner cavity side wall of the power plant smoke exhaust chimney body 1 again, thereby achieving the effect of cleaning the dust on the inner cavity side wall of the power plant smoke exhaust chimney body 1 during the smoke exhaust process.

[0025] Example 2

[0026] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2-3 The connecting unit 75 includes a limiting rod 751 fixedly installed on the upper end of the threaded column 73 and a movable rod 753 arranged on the limiting rod 751. The limiting rod 751 is fixedly connected to the threaded column 73, and one end of the movable rod 753 is fixedly installed with a limiting shaft 752, and one end of the limiting shaft 752 is fixedly connected to the side wall of the first cleaning ring 2.

[0027] A connection panel 74 is fixedly mounted on the inner cavity side wall of the connection tube 5 , and the connection panel 74 is threadedly connected to the threaded column 73 .

[0028] The limit rod 751 is provided with a connection groove 754, and the movable rod 753 is slidably arranged on the connection groove 754. A second spring 755 is arranged between the movable rod 753 and the connection groove 754. Because the diameter of the smoke exhaust pipe body 1 of the thermal power plant is inconsistent from top to bottom, the first cleaning ring 2 and the second cleaning ring 3 can be tightly fitted with the inner cavity side wall of the smoke exhaust pipe body 1 of the thermal power plant through the arrangement of the movable rod 753 and the second spring 755, and there will be no separation phenomenon. It should be noted that: the elastic force of the second spring 755 causes the first cleaning ring 2 to be tightly fitted with the inner cavity side wall of the smoke exhaust pipe body 1 of the thermal power plant, and will not cause the threaded column 73 to be unable to rotate.

[0029] In the present embodiment, when the piston 71 slides upward, it drives the threaded column 73 to slide along the connecting panel 74. Since the connecting panel 74 is threadedly connected to the threaded column 73, and the lower end of the threaded column 73 is rotatably connected to the piston 71, the threaded column 73 will rotate during the longitudinal displacement, and the threaded column 73 will drive the limiting rod 751, the movable rod 753, the limiting shaft 752, the first cleaning ring 2 and the second cleaning ring 3 to rotate together, so that the first cleaning ring 2 and the second cleaning ring 3 can rotate themselves during the longitudinal displacement, and the inner cavity side wall of the smoke exhaust chimney body 1 of the thermal power plant can be further scraped and cleaned, which is convenient to operate.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A smoke exhaust device for a thermal power plant, comprising a smoke exhaust pipe body (1) of a thermal power plant, characterized in that: A first cleaning ring (2) and a second cleaning ring (3) are slidably arranged in sequence from top to bottom on the inner cavity side wall of the thermal power plant smoke exhaust chimney body (1); the first cleaning ring (2) and the second cleaning ring (3) are connected via a fixing rod (4); a limiting panel (6) is fixedly installed on the inner cavity side wall of the thermal power plant smoke exhaust chimney body (1); a connecting tube (5) is fixedly installed on the upper end of the limiting panel (6); and a driving unit (7) is arranged on the connecting tube (5) for driving the first cleaning ring (2) and the second cleaning ring (3) to slide along the inner cavity side wall of the thermal power plant smoke exhaust chimney body (1).

2. A smoke exhaust device for a thermal power plant according to claim 1, characterized in that: The driving unit (7) comprises a piston (71) slidably arranged on the connecting cylinder (5) and a threaded column (73) rotatably arranged on the upper end of the piston (71); the threaded column (73) is connected to the first cleaning ring (2) via a connecting unit (75).

3. A smoke exhaust device for a thermal power plant according to claim 2, characterized in that: A first spring (72) is fixedly connected between the bottom wall of the connecting cylinder (5) and the piston (71), and an inert gas is placed in the space below the piston (71).

4. A smoke exhaust device for a thermal power plant according to claim 3, characterized in that: A connection panel (74) is fixedly mounted on the inner cavity side wall of the connection tube (5), and the connection panel (74) is threadedly connected to the threaded column (73).

5. A smoke exhaust device for a thermal power plant according to claim 4, characterized in that: The connection unit (75) comprises a limiting rod (751) fixedly mounted on the upper end of the threaded column (73) and a movable rod (753) arranged on the limiting rod (751), one end of the movable rod (753) being fixedly mounted with a limiting shaft (752), and one end of the limiting shaft (752) being fixedly connected to the side wall of the first cleaning ring (2).

6. A smoke exhaust device for a thermal power plant according to claim 5, characterized in that: The limiting rod (751) is provided with a connecting groove (754), the movable rod (753) is slidably arranged on the connecting groove (754), and a second spring (755) is arranged between the movable rod (753) and the connecting groove (754).

Images