Novel innovative structure of convection heat exchange device for controlling thermal load deviation

Abstract

The utility model discloses a novel innovative structure for controlling thermal load deviation of a heat convection device, which belongs to the field of boilers and comprises a high-temperature superheater tube panel system and a high-temperature reheater tube panel system. And a high-temperature superheater tube panel system is arranged at the bottom of the high-temperature reheater tube panel system. According to the novel innovative structure for controlling thermal load deviation of the convection heat exchange device, the problem of thermal load deviation of an existing boiler is solved, the temperature of main steam of the boiler is increased by 5 DEG C, the temperature of a reheat steam outlet is increased by 2 DEG C, the efficiency of a unit is increased by about 0.2%, the efficiency of the unit is improved, and the power generation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of boilers, in particular to a novel innovative structure for controlling heat load deviation of a convection heat exchange device. Background Art

[0002] At present, with the development of boiler technology, the parameters of high-temperature heating surfaces of ultra-supercritical boilers are constantly improving. However, due to material limitations, high-temperature heating surfaces can only be made of Super304H and HR3C materials, and outlet pipe joints can only be improved to SA-213T92 materials.

[0003] The impact of deviations after actual operation is particularly important. Reducing deviations from the design stage is a key consideration in the design process of ultra-supercritical units. The deviations between tubes and screens must be strictly controlled to ensure that the final outlet temperature reaches the rated value and ultimately improve the efficiency of the unit. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a new type of convective heat exchange device with an innovative structure for controlling the thermal load deviation, which solves the current problem of boiler thermal load deviation, increases the boiler main steam temperature by 5°C and the reheat steam outlet temperature by 2°C, and increases the unit efficiency by about 0.2%, thereby improving the unit efficiency and reducing the cost of power generation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a novel innovative structure for controlling heat load deviation of a convective heat exchange device, which includes a high-temperature superheater tube panel system and a high-temperature reheater tube panel system; a high-temperature superheater tube panel system is arranged at the bottom of the high-temperature reheater tube panel system.

[0007] A further technical solution of the utility model is that the high-temperature superheater tube panel system includes a high-temperature superheater tube panel, a high-temperature superheater header, and a high-temperature superheater header scattering pipe; a high-temperature superheater header scattering pipe is arranged at one end of the high-temperature superheater tube panel; and a high-temperature superheater header is arranged at the top of the high-temperature superheater header scattering pipe.

[0008] A further technical solution of the utility model is that the high temperature superheater tube panel is a "U"-shaped structure.

[0009] A further technical solution of the utility model is that the high-temperature superheater header and the high-temperature superheater header diffuser pipes are located at the "U"-shaped opening end of the high-temperature superheater tube panel.

[0010] A further technical solution of the utility model is that the high-temperature reheater tube panel system includes a high-temperature reheater tube panel, a high-temperature reheater header, and a high-temperature reheater header scattering pipe; a section of the high-temperature reheater tube panel is provided with a high-temperature reheater header scattering pipe; and a high-temperature reheater header is provided at the top of the high-temperature reheater header scattering pipe.

[0011] A further technical solution of the utility model is that the high temperature reheater tube panel is a "U"-shaped structure.

[0012] A further technical solution of the utility model is that the high-temperature reheater header and the high-temperature reheater header diffuser pipes are located at the "U"-shaped opening end of the high-temperature reheater tube panel.

[0013] A further technical solution of the utility model is that the high-temperature superheater tube panel and the high-temperature reheater tube panel are arranged in parallel.

[0014] A further technical solution of the utility model is that the opening directions of the "U"-shaped opening ends of the high-temperature superheater tube panel and the high-temperature reheater tube panel are opposite.

[0015] A further technical solution of the utility model is that the high-temperature superheater tube panel system and the high-temperature reheater tube panel system are located inside the furnace body.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a novel convective heat exchange device with an innovative structure for controlling heat load deviation, which solves the current problem of boiler heat load deviation, increases the boiler main steam outlet temperature by 5°C and the reheat steam outlet temperature by 2°C, increases the unit efficiency by about 0.2%, improves the unit efficiency, and reduces the power generation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the innovative structure of the convection heat exchange device of the utility model for controlling heat load deviation.

[0019] Figure 2 It is a schematic diagram of the innovative structure of the convective heat exchange device for controlling heat load deviation of the utility model, a schematic diagram of the structure of the high-temperature superheater tube panel system 11 and the high-temperature reheater tube panel system 44.

[0020] In the figure:

[0021] High temperature superheater tube panel system 11; high temperature superheater tube panel 1; high temperature superheater header 2; high temperature superheater header scattering pipe 3; high temperature reheater tube panel system 44; high temperature reheater tube panel 4; high temperature reheater header 5; high temperature reheater header scattering pipe 6. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances. Specific implementation method one:

[0025] Combine the following Figure 1 , 2 Description of this embodiment: The utility model relates to a boiler, more specifically, a novel innovative structure for controlling heat load deviation of a convection heat exchange device, including a high-temperature superheater tube panel system 11 and a high-temperature reheater tube panel system 44; a high-temperature reheater tube panel system 4 4 A high-temperature superheater tube panel system 11 is arranged at the bottom, which solves the current problem of boiler heat load deviation, increases the boiler main steam temperature by 5°C, the reheat steam outlet temperature by 2°C, and increases the unit efficiency by about 0.2%, thereby improving the unit efficiency and reducing the power generation cost. Specific implementation method 2:

[0027] Combine the following Figure 1 , 2 This embodiment further explains the first embodiment. The high-temperature superheater tube panel system 11 includes a high-temperature superheater tube panel 1, a high-temperature superheater header 2, and a high-temperature superheater header diffuser 3. A high-temperature superheater header diffuser 3 is provided at one end of the high-temperature superheater tube panel 1. A high-temperature superheater header diffuser 3 is provided at the top of the high-temperature superheater header diffuser 3. Specific implementation method three:

[0029] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature superheater tube panel 1 is a "U"-shaped structure. Specific implementation method four:

[0031] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature superheater header 2 and the high-temperature superheater header diffuser pipes 3 are located at the "U"-shaped opening end of the high-temperature superheater tube panel 1. Specific implementation method five:

[0033] Combine the following Figure 1 , 2 This embodiment further explains the first embodiment. The high-temperature reheater tube panel system 44 includes a high-temperature reheater tube panel 4, a high-temperature reheater header 5, and a high-temperature reheater header scattering pipe 6. A section of the high-temperature reheater tube panel 4 is provided with a high-temperature reheater header scattering pipe 6. A high-temperature reheater header 5 is provided at the top of the high-temperature reheater header scattering pipe 6. Specific implementation method six:

[0035] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature reheater tube panel 4 is a "U"-shaped structure. Specific implementation method seven:

[0037] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature reheater header 5 and the high-temperature reheater header diffuser pipes 6 are located at the "U"-shaped opening end of the high-temperature reheater tube panel 4. Specific implementation eight:

[0039] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature superheater tube panel 1 and the high-temperature reheater tube panel 4 are arranged in parallel. Specific implementation method nine:

[0041] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The opening directions of the "U"-shaped opening ends of the high-temperature superheater tube panel 1 and the high-temperature reheater tube panel 4 are opposite. Specific implementation method ten:

[0043] Combine the following Figure 1 , 2 This embodiment is described. This embodiment further describes the first embodiment. The high-temperature superheater tube panel system 11 and the high-temperature reheater tube panel system 44 are located in the furnace body.

[0044] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A novel innovative structure for controlling heat load deviation of a convection heat exchange device, characterized in that: It comprises a high-temperature superheater tube panel system (11) and a high-temperature reheater tube panel system (44); The high temperature reheater tube panel system (4 4 ) A high-temperature superheater tube panel system (11) is arranged at the bottom.

2. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 1 is characterized in that: The high-temperature superheater tube panel system (11) comprises a high-temperature superheater tube panel (1), a high-temperature superheater header (2), and a high-temperature superheater header diffuser (3); A high-temperature superheater header diffuser (3) is provided at one end of the high-temperature superheater tube panel (1); A high-temperature superheater header (2) is arranged at the top end of the high-temperature superheater header diffuser pipe (3).

3. The innovative structure for controlling heat load deviation of the novel convection heat exchange device according to claim 2 is characterized in that: The high temperature superheater tube panel (1) is a "U" shaped structure.

4. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 2 or 3 is characterized in that: The high-temperature superheater header (2) and the high-temperature superheater header diffuser (3) are located at the "U"-shaped opening end of the high-temperature superheater tube panel (1).

5. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 1 is characterized in that: The high temperature reheater tube panel system (44) comprises a high temperature reheater tube panel (4), a high temperature reheater header (5), and a high temperature reheater header diffuser (6); A section of the high-temperature reheater tube panel (4) is provided with a high-temperature reheater header diffuser (6); A high-temperature reheater header (5) is arranged at the top end of the high-temperature reheater header scattering pipe (6).

6. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 5 is characterized in that: The high temperature reheater tube panel (4) is a "U"-shaped structure.

7. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 5 or 6 is characterized in that: The high-temperature reheater header (5) and the high-temperature reheater header diffuser (6) are located at the "U"-shaped opening end of the high-temperature reheater tube panel (4).

8. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 3 or 6 is characterized in that: The high-temperature superheater tube panel (1) and the high-temperature reheater tube panel (4) are arranged in parallel.

9. The novel structure for controlling heat load deviation of a convection heat exchange device according to claim 8 is characterized in that: The opening directions of the "U"-shaped opening ends of the high-temperature superheater tube panel (1) and the high-temperature reheater tube panel (4) are opposite.

10. The innovative structure for controlling heat load deviation of a novel convection heat exchange device according to claim 1 is characterized in that: The high-temperature superheater tube panel system (11) and the high-temperature reheater tube panel system (44) are located in the furnace body.

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