Quickly-mounted air pre-heater for coal-fired boiler of thermal power station

Abstract

The utility model discloses a quick-mounting air pre-heater for a coal-fired boiler of a thermal power station, which comprises a cold and hot gas inlet and outlet chamber, a flue gas inlet and outlet chamber is arranged at the bottom of the cold and hot gas inlet and outlet chamber, and mounting plates are arranged at the top of the cold and hot gas inlet and outlet chamber and the bottom of the flue gas inlet and outlet chamber. A plurality of evenly-distributed vertical fixing strips are arranged on the inner sides of the two mounting plates and located on the front side and the rear side of the cold and hot air inlet and outlet chamber and the front side and the rear side of the smoke inlet and outlet chamber respectively, a hollowed-out plate is arranged between the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber, and a plurality of evenly-distributed cooling fins are obliquely arranged on the hollowed-out plate. A plurality of evenly-distributed heat storage pieces are arranged in the cold and hot gas inlet and outlet chamber and the flue gas inlet and outlet chamber, fan fixing plates are arranged at the left ends and the right ends in the cold and hot gas inlet and outlet chamber and the flue gas inlet and outlet chamber, and axial flow fans are installed in the multiple fan fixing plates. The device is easy to install and operate, cold and hot air and flue gas are separated for heat transfer, and the phenomenon that the gas and the flue gas are mixed and are difficult to separate after heat conduction is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal-fired boilers in thermal power plants, in particular to a quick-installed air preheater used for coal-fired boilers in thermal power plants. Background Art

[0002] A coal-fired boiler in a thermal power station is a thermal power generation device that uses coal combustion to generate heat energy, heats feed water through the heat energy to generate steam to drive the steam turbine, and then drives the generator to generate electricity. It is one of the main equipment in a thermal power station and an important link in converting coal energy into electrical energy.

[0003] The traditional air preheater used in coal-fired boilers of thermal power plants has the following defects:

[0004] (1) Traditional air preheaters need to be installed indirectly using other methods, which makes the installation work more complicated;

[0005] (2) Traditional air preheaters mostly conduct heat through contact with air. After heat conduction, the gas and flue gas are mixed and difficult to separate, and the transported cold and hot gases are prone to carry flue gas. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a quick-installed air preheater with a reasonable structural design for a coal-fired boiler in a thermal power station.

[0007] The technical solution adopted by the utility model to solve the above-mentioned problem is: a quick-installed air preheater for a coal-fired boiler in a thermal power station, characterized in that: it includes a cold and hot air inlet and outlet chamber, a flue gas inlet and outlet chamber is arranged at the bottom of the cold and hot air inlet and outlet chamber, a mounting plate is arranged at the top of the cold and hot air inlet and outlet chamber and the bottom of the flue gas inlet and outlet chamber, and a clamping strip is arranged at the left and right ends of the outer sides of the two mounting plates, and a plurality of evenly distributed vertical fixing strips are arranged at the front and rear ends of the inner sides of the two mounting plates, and the plurality of vertical fixing strips are respectively located at the cold and hot air inlet and outlet chambers. and the front and rear sides of the smoke inlet and outlet chamber, a hollow plate is arranged between the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber, a plurality of evenly distributed heat sinks are obliquely arranged on the hollow plate, a plurality of evenly distributed heat storage plates are arranged inside the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber, fan fixing plates are arranged at the left and right ends of the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber, axial flow fans are installed in the plurality of fan fixing plates, the output ends of the plurality of axial flow fans are fixedly connected with a rotating shaft, and one end of the plurality of rotating shafts is connected with a fan blade.

[0008] Furthermore, installation openings are provided at both left and right ends of the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber.

[0009] Furthermore, the sides of the cold and hot air inlet and outlet chamber and the smoke inlet and outlet chamber are respectively provided with cold and hot air inlet and outlet marks and smoke inlet and outlet marks.

[0010] Furthermore, protective nets are provided in the installation openings of the cold and hot air inlet and outlet chambers and the smoke inlet and outlet chambers, and a fixing column is connected to the middle of the protective nets.

[0011] Furthermore, a transverse fixing plate and a plurality of X-shaped reinforcement structures are fixedly connected between the plurality of vertical fixing bars.

[0012] Furthermore, the plurality of vertical fixing bars are fixed to the mounting plate by fixing bolts.

[0013] Furthermore, a plurality of evenly distributed ventilation holes are provided in each of the plurality of heat storage plates.

[0014] Compared with the prior art, the utility model has the following advantages and effects: the pipeline is installed according to the cold and hot air inlet and outlet markings and the smoke inlet and outlet markings, and the cold and hot air inlet and outlet chambers and the smoke inlet and outlet chambers are fixed by operating the fixing bolts, using vertical fixing strips, horizontal fixing plates and X-shaped reinforcement structures, and the operation is simple; the heat in the smoke in the smoke inlet and outlet chamber is absorbed by the heat storage plate, and the heat is transferred to the cold and hot air inlet and outlet chambers through the heat sink to preheat the cold air, and the cold and hot air and the smoke are operated separately for heat transfer, thereby avoiding the phenomenon that the gas and smoke are mixed and difficult to separate after heat conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0018] In the figure: hot and cold air inlet and outlet chamber 1, smoke inlet and outlet chamber 2, hot and cold air inlet and outlet signs 3, smoke inlet and outlet signs 4, vertical fixing strips 5, horizontal fixing plates 6, mounting plates 7, fixing bolts 8, clamping strips 9, hollow plates 10, heat sinks 11, heat storage plates 12, ventilation holes 13, mounting openings 14, X-shaped reinforcement structures 15, fixing columns 16, protective nets 17, fan fixing plates 18, axial flow fans 19, rotating shafts 20, and fan blades 21. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0020] See also Figures 1 to 3A quick-installed air preheater for a coal-fired boiler in a thermal power station comprises a hot and cold air inlet and outlet chamber 1, a flue gas inlet and outlet chamber 2 is arranged at the bottom of the hot and cold air inlet and outlet chamber 1, mounting plates 7 are arranged at the top of the hot and cold air inlet and outlet chamber 1 and the bottom of the flue gas inlet and outlet chamber 2, and clamping strips 9 are arranged at the left and right ends of the outer sides of the two mounting plates 7, and a plurality of evenly distributed vertical fixing strips 5 are arranged at the front and rear ends of the inner sides of the two mounting plates 7, and the plurality of vertical fixing strips 5 are respectively located at the front and rear sides of the hot and cold air inlet and outlet chamber 1 and the flue gas inlet and outlet chamber 2, A hollow plate 10 is arranged between the cold and hot air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2, and a plurality of evenly distributed heat sinks 11 are arranged obliquely on the hollow plate 10. A plurality of evenly distributed heat storage sheets 12 are arranged inside the cold and hot air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2. A fan fixing plate 18 is arranged at both ends of the cold and hot air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2. A plurality of fan fixing plates 18 are installed with axial flow fans 19. The output ends of the plurality of axial flow fans 19 are fixedly connected with rotating shafts 20, and one end of the plurality of rotating shafts 20 is connected with fan blades 21. When in use, the heat sink 11 and the heat storage sheet 12 can absorb and transfer the heat in the smoke.

[0021] Installation ports 14 are provided at both the left and right ends of the hot and cold air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2, and the installation ports 14 are used to connect pipes. Hot and cold air inlet and outlet marks 3 and smoke inlet and outlet marks 4 are provided on the sides of the hot and cold air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2, respectively, and the marks are used to indicate different installation ports 14. Protective nets 17 are provided in the installation ports 14 of the hot and cold air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2, and a fixing column 16 is connected to the middle of the protective net 17, and the protective net 17 is used to improve the safety of the equipment. When in use, according to the instructions of the hot and cold air inlet and outlet marks 3 and the smoke inlet and outlet marks 4, the pipes are installed in sequence through the installation ports 14.

[0022] A transverse fixing plate 6 and a plurality of X-shaped reinforcement structures 15 are fixedly connected between the plurality of vertical fixing bars 5, and the transverse fixing plate 5 and the plurality of X-shaped reinforcement structures 6 are used to improve the firmness. The plurality of vertical fixing bars 5 are fixed to the mounting plate 7 by fixing bolts 8. A plurality of evenly distributed ventilation holes 13 are provided in the plurality of heat storage plates 12, and the ventilation holes 13 are used for the passage of cold and hot air and smoke. When in use, the cold and hot air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2 are fixed by the vertical fixing bars 5, the transverse fixing plates 6 and the X-shaped reinforcement structures 15.

[0023] During specific use, the pipes are installed according to the cold and hot air inlet and outlet marks 3 and the smoke inlet and outlet marks 4, and the cold and hot air inlet and outlet chamber 1 and the smoke inlet and outlet chamber 2 are fixed by using vertical fixing strips 5, horizontal fixing plates 6 and X-shaped reinforcement structures 15. An axial flow fan 19 is used inside the air preheater to accelerate the flow rate of the gas. The heat storage plate 12 can absorb the heat in the smoke in the smoke inlet and outlet chamber 2, and the heat can be transferred to the cold and hot air inlet and outlet chamber 1 through the heat sink 11 to preheat the cold air.

[0024] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0025] In addition, it should be noted that the above content described in this specification is only an example of the structure of the utility model. All equivalent changes made based on the structure, features and principles described in the utility model patent are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications, supplements or replace the specific embodiments described in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A quick-install air preheater for a coal-fired boiler in a thermal power station, characterized in that: The invention comprises a hot and cold air inlet and outlet chamber (1), a smoke inlet and outlet chamber (2) is arranged at the bottom of the hot and cold air inlet and outlet chamber (1), a mounting plate (7) is arranged at the top of the hot and cold air inlet and outlet chamber (1) and the bottom of the smoke inlet and outlet chamber (2), a clamping strip (9) is arranged at the left and right ends of the outer sides of the two mounting plates (7), a plurality of evenly distributed vertical fixing strips (5) are arranged at the front and rear ends of the inner sides of the two mounting plates (7), the plurality of vertical fixing strips (5) are respectively located at the front and rear sides of the hot and cold air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2), and a fixing strip (9) is arranged between the hot and cold air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2). A hollow plate (10) is arranged, and a plurality of evenly distributed heat sinks (11) are obliquely arranged on the hollow plate (10); a plurality of evenly distributed heat storage plates (12) are arranged inside the cold and hot air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2); fan fixing plates (18) are arranged at both left and right ends inside the cold and hot air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2); axial flow fans (19) are installed in the plurality of fan fixing plates (18); output ends of the plurality of axial flow fans (19) are fixedly connected to a rotating shaft (20); and one end of the plurality of rotating shafts (20) is connected to a fan blade (21).

2. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 1, characterized in that: The left and right ends of the cold and hot air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2) are both provided with mounting openings (14).

3. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 1, characterized in that: The sides of the cold and hot air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2) are provided with cold and hot air inlet and outlet markings (3) and smoke inlet and outlet markings (4), respectively.

4. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 2, characterized in that: A protective net (17) is provided in the installation openings (14) of the cold and hot air inlet and outlet chamber (1) and the smoke inlet and outlet chamber (2), and a fixing column (16) is connected to the middle of the protective net (17).

5. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 1, characterized in that: A transverse fixing plate (6) and a plurality of X-shaped reinforcement structures (15) are fixedly connected between the plurality of vertical fixing bars (5).

6. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 1 or 5, characterized in that: The plurality of vertical fixing bars (5) are fixed to the mounting plate (7) via fixing bolts (8).

7. The quick-installed air preheater for a coal-fired boiler in a thermal power station according to claim 1, characterized in that: A plurality of evenly distributed ventilation holes (13) are provided in each of the plurality of heat storage sheets (12).

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