Novel radiation heat exchange structure
By adopting a symmetrically arranged screen superheater hybrid container structure in a million tower boiler, the problems of uneven heat exchange and difficulty in production of existing boilers are solved, and more efficient heat exchange effect and safe operation are achieved .
Patent Information
- Application Number
- CN202323552371.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The heating surface structure of the existing 1000MW tower ultra-supercritical boiler has difficulty and limitations in production, resulting in uneven heat exchange and large deviations, and is difficult to produce, affecting unit efficiency and power generation costs.
Adopt a new radiation heat exchange structure, including setting up a screen superheater hybrid container in a million tower boiler, and ensuring heat receiving through the symmetrical arrangement of the screen superheater inlet container, suspension tube, heating surface and outlet container The surface is evenly contacted with flue gas, reducing production errors and operating risks.
The uniformity and safety of heat exchange of the heated surface are achieved, the production difficulty and power generation cost are reduced, the unit efficiency is improved, and the safety of the heated surface operation is ensured.
Smart Images
Figure CN222143025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of boilers, and in particular to a novel radiation heat exchange structure. Background Art
[0002] For million-ton tower boilers, due to the characteristics of their own heating surface layout, the heating surfaces in the furnace are arranged in sequence from bottom to top along the flue gas flow direction. As the first screen superheater to contact the flue gas for heat exchange, its heat exchange is a mixed heat exchange method of full radiation and semi-convection, and the heat exchange is relatively complex.
[0003] At present, the screen-type superheater heating surface structure of the existing 1000MW tower ultra-supercritical boiler in China has certain difficulties and limitations in production and manufacturing. Therefore, a new type of million-MW tower boiler radiation heat exchange structure is invented to solve the above problems, which can ensure that the heat exchange of the heating surface is uniform, the deviation is small, and the production and manufacturing are not prone to errors, reducing the difficulty of production and ensuring the safe operation of the heating surface. 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 radiation heat exchange structure, which can ensure uniform heat exchange on its heating surface with small deviation, and is not prone to errors in production and manufacturing, thereby reducing production difficulty, improving unit efficiency, reducing power generation costs, and ensuring safe operation of its heating surface.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a novel radiation heat exchange structure, comprising a platen superheater mixing header; there are two platen superheater mixing headers, which are respectively arranged in front of a furnace and behind a furnace; the platen superheater mixing headers are symmetrically arranged with the center line of the furnace as a reference.
[0007] A further technical solution of the utility model is that the platen superheater mixing header comprises a platen superheater inlet header, a platen superheater suspension pipe, a platen superheater heating surface and a platen superheater outlet header.
[0008] A further technical solution of the utility model is that the platen superheater inlet header is two intermediate headers of the heating surface of the platen superheater, which are arranged in front of the furnace and behind the furnace respectively, and also include related diffusers.
[0009] A further technical solution of the utility model is that the inlet header of the platen superheater is symmetrically arranged with the center line of the furnace as a reference.
[0010] A further technical solution of the utility model is that the platen superheater suspension pipe is connected to the platen superheater inlet header and the platen superheater heating surface, and suspends other heating surfaces.
[0011] A further technical solution of the utility model is that the heating surface of the platen superheater is arranged below all the heating surfaces and is the heating surface with a complex structure that first contacts the flue gas.
[0012] A further technical solution of the utility model is that the heating surface of the platen superheater is symmetrically arranged with the center line of the furnace as a reference.
[0013] A further technical solution of the utility model is that the platen superheater outlet headers are two outlet headers of the heating surface of the platen superheater, which are arranged in front of the furnace and behind the furnace respectively.
[0014] A further technical solution of the utility model is that the platen superheater outlet header is symmetrically arranged with the furnace center line as a reference.
[0015] The beneficial effects of the utility model are:
[0016] The novel radiation heat exchange structure provided by the utility model can ensure uniform heat exchange on its heating surface with small deviation, and is less prone to errors in production and manufacturing, thereby reducing production difficulty, improving unit efficiency, reducing power generation costs, and ensuring safe operation of its heating surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the novel radiation heat exchange structure of the utility model.
[0018] In the figure:
[0019] Platen superheater inlet header 1; platen superheater suspension pipe 2; platen superheater heating surface 3; platen superheater outlet header 4; platen superheater mixing header 5. DETAILED DESCRIPTION
[0020] 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.
[0021] 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:
[0023] Combine the following Figure 1 To explain this embodiment, the utility model relates to a boiler, more specifically a new type of radiation heat exchange structure, including a platen superheater mixing header 5; there are two platen superheater mixing headers 5, which are respectively arranged in front of the furnace and behind the furnace; the platen superheater mixing headers 5 are symmetrically arranged with the center line of the furnace as a reference, which can ensure that the heat exchange of its heating surface is uniform, the deviation is small, and the production and manufacturing are not prone to errors, thereby reducing the difficulty of production, improving the efficiency of the unit, reducing the cost of power generation, and ensuring the safe operation of its heating surface. Specific implementation method 2:
[0025] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater mixing header 5 includes a platen superheater inlet header 1, a platen superheater suspension pipe 2, a platen superheater heating surface 3 and a platen superheater outlet header 4. Specific implementation method three:
[0027] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater inlet header 1 is two intermediate headers of the platen superheater heating surface 3, which are arranged in front of the furnace and behind the furnace respectively, and also include related diffusers. Specific implementation method four:
[0029] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater inlet header 1 is symmetrically arranged with the furnace centerline as a reference. Specific implementation method five:
[0031] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater suspension pipe 2 is connected to the platen superheater inlet header 1 and the platen superheater heating surface 3, and suspends other heating surfaces.
[0032] The platen superheater suspension pipe 2 is led out from the platen superheater inlet header 1, arranged in the furnace from top to bottom, suspending other heating surfaces such as superheaters and reheaters in the furnace, and playing the role of fixing other heating surface tube panels. Specific implementation method six:
[0033] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater heating surface 3 is arranged below all heating surfaces and is the heating surface with a complex structure that first contacts the flue gas.
[0034] The heating surface 3 of the platen superheater is ultimately composed of suspended pipes from top to bottom. The suspended pipes form two independent front and rear heating surfaces according to the front and rear arrangement positions, and are no longer cross-arranged, which reduces the difficulty of production and manufacturing, and reduces resistance and temperature deviation. Specific implementation method seven:
[0036] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The heating surface 3 of the platen superheater is symmetrically arranged with the center line of the furnace as a reference. Specific implementation eight:
[0038] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater outlet headers 4 are two outlet headers of the platen superheater heating surface 3, which are arranged in front of the furnace and behind the furnace respectively. Specific implementation method nine:
[0040] Combine the following Figure 1 This embodiment is described. This embodiment further describes the first embodiment. The platen superheater outlet header 4 is symmetrically arranged with the furnace centerline as a reference.
[0041] 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 new type of radiation heat exchange structure, characterized in that: It includes a platen superheater mixing header (5); There are two platen superheater mixing headers (5), which are respectively arranged in front of the furnace and behind the furnace; The platen-type superheater mixing header (5) is symmetrically arranged with the furnace centerline as a reference.
2. The novel radiation heat exchange structure according to claim 1 is characterized in that: The platen superheater mixing header (5) comprises a platen superheater inlet header (1), a platen superheater suspension pipe (2), a platen superheater heating surface (3) and a platen superheater outlet header (4).
3. The novel radiation heat exchange structure according to claim 2 is characterized in that: The platen superheater inlet headers (1) are two intermediate headers of the platen superheater heating surface (3), which are arranged in front of the furnace and behind the furnace respectively, and also include related diffuser pipes.
4. The novel radiation heat exchange structure according to claim 3 is characterized in that: The inlet header (1) of the platen superheater is symmetrically arranged with the center line of the furnace as a reference.
5. The novel radiation heat exchange structure according to claim 2 is characterized in that: The platen superheater suspension pipe (2) is connected to the platen superheater inlet header (1) and the platen superheater heating surface (3), and suspends other heating surfaces.
6. The novel radiation heat exchange structure according to claim 2 is characterized in that: The platen superheater heating surface (3) is arranged below all the heating surfaces and is the heating surface with a complex structure that first contacts the flue gas.
7. The novel radiation heat exchange structure according to claim 6 is characterized in that: The heating surface (3) of the platen superheater is symmetrically arranged with the center line of the furnace as a reference.
8. The novel radiation heat exchange structure according to claim 2 is characterized in that: The platen superheater outlet headers (4) are two outlet headers of the platen superheater heating surface (3), which are arranged in front of the furnace and behind the furnace respectively.
9. The novel radiation heat exchange structure according to claim 8 is characterized in that: The platen-type superheater outlet header (4) is symmetrically arranged with the furnace centerline as a reference.