Air preheating device

Abstract

The utility model discloses an air preheating device which comprises an air heating motor, the air heating motor is of an electric structure, the output end of the air heating motor is fixedly connected with transverse heat-conducting fins, the transverse heat-conducting fins are of stainless steel structures, vertical heat-conducting fins are fixedly connected between the transverse heat-conducting fins, and the vertical heat-conducting fins are of stainless steel structures. And the upper end of the upper-end air recovery pipeline is fixedly connected with a separation sealing baffle, and a heat recovery shell is placed at the upper end of the separation sealing baffle. The supporting and fixing column is arranged at the top end of the air preheating device shell, the upper end of the supporting and fixing column is fixedly connected with the upper end limiting rail, the heat recycling shell used for recycling heat is slidably connected into the upper end limiting rail, and waste heat after preheating work is completed is recycled. A separation sealing baffle is arranged between the air preheating device shell and the heat recovery shell, so that the whole structure is sealed during preheating work. And heat leakage is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating work of thermal power plant, especially air preheating device. BACKGROUND

[0002] In industrial production, air preheating device is mostly used in coal-fired power station boiler, which can improve and strengthen combustion, strengthen heat transfer, reduce furnace loss, reduce exhaust gas temperature and improve boiler thermal efficiency.

[0003] Generally, before air is input into the inside of the boiler, a relatively sealed environment is set, and a plurality of heat-conducting sheet structures are placed and fixed inside the preheating device, and a corresponding heat source is set at the bottom end of the heat-conducting sheet, so that the air stays in the air preheating device without affecting the air input and completes the corresponding work by heating. However, this structure produces a large amount of waste heat after preheating, causing waste of energy. Chinese patent CN201620516046.3 discloses an air preheating device, which preheats the air passing through the air inlet to avoid the occurrence of low-temperature smoke and steam, which can cause electric leakage corrosion and dew point corrosion, prolong the service life of the air preheating device heat exchange pipe and reduce the production cost. However, this structure does not solve the problem of heat waste and lack of recycling. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving one of the technical problems in the prior art, and provides an air preheating device. A support fixing column is arranged at the top end of the air preheating device shell, an upper end limiting track is fixedly connected to the upper end of the support fixing column, and a heat recovery shell for recovering heat is slidably connected to the inside of the upper end limiting track, so that the waste heat after preheating is recovered. A partitioning and sealing baffle is arranged between the air preheating device shell and the heat recovery shell to seal the whole structure during preheating and prevent heat leakage.

[0005] The utility model discloses still provide with above-mentioned air preheating device, include: air heating motor, air heating motor is electric structure, air heating motor output fixedly connected with horizontal heat conduction sheet, horizontal heat conduction sheet is stainless steel structure, fixedly connected with vertical heat conduction sheet between horizontal heat conduction sheet, vertical heat conduction sheet is stainless steel structure, upper end air recovery pipeline, upper end air recovery pipeline upper end fixedly connected with separate sealed baffle, the separate sealed baffle upper end is placed with heat recovery casing. Through setting up support fixed column at the top of air preheating device casing, fixedly connected with upper end limiting track at the upper end of support fixed column, the heat recovery casing for recovering heat is connected with sliding in the upper end limiting track, and the waste heat after preheating work is completed is recovered. Through placing separate sealed baffle between air preheating device casing and heat recovery casing, the whole structure is sealed during preheating work. Prevent heat leakage.

[0006] According to the air preheating device, the air heating motor is fixedly connected with the air preheating device casing, the heating motor and the air preheating device casing are fixedly connected with the fixed connection plate, and the air preheating device casing is connected with the ventilation input port.

[0007] According to the air preheating device, the air input pipe is fixedly connected to the outer end of the ventilation input port.

[0008] According to the air preheating device, the fixed bolt interface is arranged at the side end of the interface flange plate, and the fixed bolt interface is connected with the industrial equipment through mounting bolts.

[0009] According to the air preheating device, the air preheating device casing is fixedly connected with the horizontal heat conduction sheet inside, and the horizontal heat conduction sheet is in contact with air.

[0010] According to the air preheating device, the air preheating device casing is connected with the upper end air recovery pipeline, and the support fixed column is fixedly connected to the outer end of the upper end air recovery pipeline.

[0011] According to the air preheating device, the upper end limiting track is fixedly connected to the top end of the support fixed column, and the heat recovery casing is slidably connected in the upper end limiting track.

[0012] According to the air preheating device, the air preheating device casing is fixedly connected with the lifting lifting piece at the front end, and the lifting lifting piece is connected with the hoisting device.

[0013] According to the air preheating device, the air preheating device casing is fixedly connected with the lifting lifting piece at the front end, and the lifting lifting piece is connected with the hoisting device. Advantages

[0014] Compared with the prior art, the air preheating device recovers the residual heat after the preheating work is completed by arranging a support fixing column at the top end of the air preheating device shell, fixing and connecting an upper end limiting track at the upper end of the support fixing column, and slidingly connecting a heat recovery shell for recovering heat inside the upper end limiting track.

[0015] Compared with the prior art, the air preheating device seals the overall structure during the preheating work by arranging a partition sealing baffle between the air preheating device shell and the heat recovery shell, thereby preventing heat leakage. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further explained in connection with the drawings and embodiments;

[0017] Figure 1 It is the structure diagram of the utility model as a whole;

[0018] Figure 2 It is Figure 1 The enlarged structure diagram of A in the middle;

[0019] Figure 3 It is the structure diagram of the utility model inside;

[0020] Figure 4 It is the structure diagram of the utility model from the top view.

[0021] Legend:

[0022] 1, air preheating device shell; 2, side end sealing shell; 3, interface flange; 4, fixed bolt interface; 5, air input pipe; 6, fixed connecting plate; 7, ventilation input port; 8, upper end limiting track; 9, lifting lug; 10, heat recovery shell; 11, support fixing column; 12, upper end air recovery pipeline; 13, partition sealing baffle; 14, air heating motor; 15, transverse heat conducting fin; 16, vertical heat conducting fin. DETAILED DESCRIPTION

[0023] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings. The drawings serve to supplement the description in the written part of the specification, making it possible for people to intuitively and visually understand each technical feature and the overall technical scheme of the utility model. However, it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figures 1-4The utility model discloses an air preheating device, which comprises: an air heating motor 14, which provides power for the operation of the overall air preheating device. The air heating motor 14 is of an electric structure, and a horizontal heat conduction sheet 15 is fixedly connected to the output end of the air heating motor 14, so that heat is conducted to the inside of the preheated air, thereby improving the preheating effect. The horizontal heat conduction sheet 15 is of a stainless steel structure, which prolongs the service life of the heat conduction sheet and reduces the rusting of the heat conduction sheet caused by external air. Vertical heat conduction sheets 16 are fixedly connected between the horizontal heat conduction sheets 15, and the vertical heat conduction sheets 16 are also of a stainless steel structure. An upper end air recovery pipeline 12 is fixedly connected to the upper end of the horizontal heat conduction sheet 15, and a heat recovery shell 10 is placed on the upper end of a partitioning and sealing baffle 13 fixedly connected to the upper end of the upper end air recovery pipeline 12. A fixed bolt interface 4 is arranged at the side end of an interface flange plate 3, and the fixed bolt interface 4 is connected to an industrial equipment through mounting bolts. The air preheating device is connected to the industrial equipment, and the sealing property of the overall equipment is improved.

[0025] The air preheating device shell 1 is fixedly connected to the upper end of the air heating motor 14, so that the air heating motor 14 is fixed at a corresponding position. A fixed connecting plate 6 is fixedly connected between the heating motor 14 and the air preheating device shell 1, and a ventilation input port 7 is connected to the outer end of the air preheating device shell 1. An air input pipe 5 is fixedly connected to the outer end of the ventilation input port 7, and the interface flange plate 3 is fixedly connected to the outer end of the air input pipe 5. The horizontal heat conduction sheet 15 is fixedly connected inside the air preheating device shell 1, and the horizontal heat conduction sheet 15 is in contact with air. The air preheating device shell 1 is connected to the upper end air recovery pipeline 12, so that the air with residual heat is sent to the inside of the heat recovery shell 10. The support fixed column 11 is fixedly connected to the outer end of the upper end air recovery pipeline 12. The upper end limiting track 8 is fixedly connected to the top end of the support fixed column 11, and the heat recovery shell 10 is slidingly connected inside the upper end limiting track 8. Deviation is prevented when the heat recovery shell 10 is moved. The lifting hanging sheet 9 is fixedly connected to the front end of the air preheating device shell 1, and the lifting hanging sheet 9 is connected to a hoisting device. The side end sealing shell 2 is fixedly connected to the outer end of the air preheating device shell 1, and the side end sealing shell 2 is of a conical structure. The sealing property and the strength of the overall equipment are improved.

[0026] Working principle: when the device is used, the interface flange plate 3 is connected to the industrial equipment, the fixed mounting bolt is threadedly connected to the fixed bolt interface 4 through the fixed connecting bolt 4, then the air heating motor 14 is started, and the temperature of the horizontal heat conduction sheet 15 and the vertical heat conduction sheet 16 is increased.

[0027] When the input air passes through the horizontal heat conduction sheet 15 and the vertical heat conduction sheet 16, the preheating work is completed through sufficient contact.

[0028] After the preheating work is completed, the preheated air is sent into the heating boiler of the thermal power plant.

[0029] After the preheating work is completed, when the heat recovery work needs to be carried out, the partition sealing baffle 13 is opened, the cooling liquid is placed in the heat recovery shell 10, and the cooling liquid in the heat recovery shell 10 is fully contacted through sufficient contact with the waste heat air, the heating work is completed, and after the heating is completed, the cooling liquid in the interior is used as drinking water for workers or indoor heating work.

[0030] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. Air preheating device, characterized in that Include: Air heating motor (14), the air heating motor (14) is electric structure, the air heating motor (14) output end fixedly connected with transverse heat conduction sheet (15), the transverse heat conduction sheet (15) is stainless steel structure, the transverse heat conduction sheet (15) is fixedly connected with vertical heat conduction sheet (16) between, the vertical heat conduction sheet (16) is stainless steel structure; The upper end air recovery pipeline (12) is fixedly connected with the separation sealing baffle (13) on the upper end, and the heat recovery shell (10) is placed on the separation sealing baffle (13).

2. The air preheating device according to claim 1, characterized in that The air heating motor (14) is fixedly connected with the air preheating device shell (1) on the upper end, and the heating motor (14) and the air preheating device shell (1) are fixedly connected with the fixed connection plate (6), and the air preheating device shell (1) is connected with the ventilation input (7) outside.

3. The air preheating device according to claim 2, characterized in that The air input pipe (5) is fixedly connected outside the ventilation input (7), and the air input pipe (5) is fixedly connected with the interface flange (3) outside.

4. The air preheating device according to claim 3, characterized in that The interface flange (3) is provided with a fixed bolt interface (4) on the side end, and the fixed bolt interface (4) is connected with the industrial equipment through the mounting bolt.

5. The air preheating device according to claim 2, characterized in that The air preheating device shell (1) is fixedly connected with the transverse heat conduction sheet (15) inside, and the transverse heat conduction sheet (15) is in contact with air.

6. The air preheating device according to claim 2, characterized in that The air preheating device shell (1) is connected with the upper end air recovery pipeline (12), and the upper end air recovery pipeline (12) is fixedly connected with the support fixed column (11) outside.

7. The air preheating device according to claim 6, characterized in that The support fixed column (11) is fixedly connected with the upper end limiting track (8) on the top, and the heat recovery shell (10) is slidably connected inside the upper end limiting track (8).

8. The air preheating device according to claim 1, characterized in that The air preheating device shell (1) is fixedly connected with the lifting lifting piece (9) on the front end, and the lifting lifting piece (9) is connected with the hoisting device.

9. The air preheating device according to claim 2, characterized in that The air preheating device shell (1) is fixedly connected with the side end sealing shell (2) outside, and the side end sealing shell (2) is a conical structure.

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