Modular economizer structure

Abstract

The utility model provides a modular economizer structure, the modular economizer structure can be assembled and connected into an economizer, each modular economizer structure comprises a flue shell (1), a coiled pipe row (2), a support beam (4), an inlet header (5), an outlet header (6) and a header support (7), the coiled pipe row (2) is arranged in the flue shell (1); the inlet end of the coiled pipe row (2) is connected with the inlet header (5); the outlet end of the coiled pipe row (2) is connected with an outlet header (6); and the supporting beam (4) is used for supporting the flue shell (1) and the coiled pipe row (2). According to the utility model, the construction workload and difficulty of a construction site can be reduced, and the construction period can be greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to a modular economizer structure. Background Technology

[0002] Economizers, as crucial components of boilers, primarily absorb waste heat from the flue gas in the boiler's tail flue to heat the feedwater, thereby lowering the exhaust gas temperature and increasing the feedwater temperature. Because economizers are typically located in the boiler's tail flue, where the flue gas temperature is relatively low, resulting in a lower temperature and pressure difference with the feedwater temperature, a larger number of economizer tube bundles are often required. However, conventional economizers are often shipped in sections and assembled on-site, leading to a large workload, long construction period, and compromised quality during installation. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a modular economizer structure, which is achieved through the following technical solution:

[0004] A modular economizer structure is disclosed, wherein the modular economizer structure can be assembled and connected to form an economizer, wherein each of the modular economizer structures includes a flue shell, a serpentine tube bank, a support beam, an inlet header, an outlet header, and a header support, wherein:

[0005] The serpentine tube bank is disposed within the flue shell; the inlet header is disposed at the flue gas outlet end of the flue shell; the outlet header is disposed at the flue gas inlet end of the flue shell; the inlet end of the serpentine tube bank is connected to the inlet header; the outlet end of the serpentine tube bank is connected to the outlet header.

[0006] The support beam is used to support the flue shell and the serpentine pipe bank.

[0007] Optionally or preferably, the flue shell is formed by a first protective plate, a second protective plate, a third protective plate, and a fourth protective plate; the outer side of the flue shell is also provided with steel profiles arranged in a "well" shape to enhance the strength of the first protective plate, the second protective plate, the third protective plate, and the fourth protective plate.

[0008] Optionally or preferably, the flue casing is also provided with an inspection door.

[0009] Optionally or preferably, the serpentine tube array consists of multiple sets of serpentine tube screens and serpentine tube supports.

[0010] Optionally or preferably, the inlet and outlet ends of the serpentine tube bank extend out of the flue housing, and the exit points are sealed by a sealing cover.

[0011] Optionally or preferably, the inlet header and outlet header are fixed to the flue shell by means of the header bracket.

[0012] Based on the above technical solution, the following technical effects can be achieved:

[0013] This utility model provides a modular economizer structure that assembles all accessories, including the economizer serpentine pipe bank, header, flue shell, support beam, and header bracket, before shipment. This reduces the workload and difficulty of on-site construction and significantly shortens the construction period. Furthermore, factory assembly ensures higher product quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the modular economizer structure of this utility model;

[0016] Figure 2 for Figure 1 The top view of AA only shows the supporting beams and guardrails;

[0017] Figure 3 This is the assembly drawing of the economizer;

[0018] Figure 4 An enlarged view of adjacent modular economizers;

[0019] Figure caption:

[0020] 1-Duct shell, 101-Guard plate one, 102-Guard plate two, 103-Guard plate three, 104-Guard plate four, 2-Serpentine pipe bank, 201-Serpentine pipe screen, 202-Serpentine pipe support, 3-Inspection door hole, 4-Support beam, 401-Main beam, 402-Small beam, 5-Inlet header, 6-Outlet header, 7-Header bracket, 8-Lifting lug, 9-Expansion joint. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0022] In a preferred embodiment:

[0023] like Figures 1-4 As shown:

[0024] This embodiment provides a modular economizer structure, which can be assembled and connected to form an economizer. Each modular economizer structure includes a flue shell 1, a serpentine pipe bank 2, a support beam 4, an inlet header 5, an outlet header 6, and a header support 7, wherein:

[0025] The serpentine tube array 2 is disposed inside the flue shell 1; the inlet header 5 is disposed at the flue gas outlet end of the flue shell 1; the outlet header 6 is disposed at the flue gas inlet end of the flue shell 1; the inlet end of the serpentine tube array 2 is connected to the inlet header 5; the outlet end of the serpentine tube array 2 is connected to the outlet header 6.

[0026] The support beam 4 is used to support the flue shell 1 and the serpentine pipe 2.

[0027] Furthermore, in this embodiment, the flue shell 1 is formed by a first protective plate 101, a second protective plate 102, a third protective plate 103, and a fourth protective plate 104; the outer side of the flue shell 1 is also provided with steel profiles arranged in a "well" shape to enhance the strength of the first protective plate 101, the second protective plate 102, the third protective plate 103, and the fourth protective plate 104.

[0028] Furthermore, in this embodiment, the flue housing 1 is also provided with an inspection door 3.

[0029] Furthermore, in this embodiment, the serpentine tube array 2 is composed of multiple sets of serpentine tube screens 201 and serpentine tube supports 202.

[0030] Furthermore, in this embodiment, the inlet and outlet ends of the serpentine pipe array 2 extend out from the flue housing 1, and the outlets are sealed by a sealing cover.

[0031] Furthermore, in this embodiment, the inlet header 5 and the outlet header 6 are fixed to the flue housing 1 by means of the header bracket 7.

[0032] Furthermore, in this embodiment, the support beam 4 is a "well" shaped frame formed by welding together multiple large beams 401 and multiple small beams 402; the large beams 401 are also provided with lifting lugs 8 for lifting.

[0033] Furthermore, in this embodiment, when the modular economizer structure is combined into an economizer, every two adjacent modular economizer structures are connected by an expansion joint 9. Preferably, the expansion joint 9 is filled with aluminum silicate fiber cotton.

[0034] The working principle and advantages of the modular economizer structure provided in this embodiment are as follows:

[0035] The serpentine tube panel has an inlet at the bottom and an outlet at the top, arranged in a counter-current flow opposite to the flue gas flow direction to achieve heat exchange. All accessories, including the serpentine tube bank 2, inlet header 5, outlet header 6, support beam 4, and header bracket 7, are pre-assembled at the factory, reducing on-site construction workload and difficulty, and significantly shortening the construction period. Furthermore, factory assembly ensures higher product quality.

[0036] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A modular economizer structure, characterized in that: The modular economizer structure can be assembled and connected to form an economizer, wherein each of the modular economizer structures includes a flue shell (1), a serpentine tube bank (2), a support beam (4), an inlet header (5), an outlet header (6), and a header support (7), wherein: The serpentine pipe bank (2) is installed inside the flue shell (1); the inlet header (5) is installed at the flue gas outlet end of the flue shell (1); the outlet header (6) is installed at the flue gas inlet end of the flue shell (1); the inlet end of the serpentine pipe bank (2) is connected to the inlet header (5); the outlet end of the serpentine pipe bank (2) is connected to the outlet header (6); The support beam (4) is used to support the flue shell (1) and the serpentine pipe bank (2).

2. The modular economizer structure according to claim 1, characterized in that: The flue shell (1) is formed by a first protective plate (101), a second protective plate (102), a third protective plate (103) and a fourth protective plate (104); the outside of the flue shell (1) is also provided with steel profiles arranged in a "well" shape to enhance the strength of the first protective plate (101), the second protective plate (102), the third protective plate (103) and the fourth protective plate (104).

3. The modular economizer structure according to claim 1, characterized in that: The flue shell (1) is also provided with an inspection door (3).

4. The modular economizer structure according to claim 1, characterized in that: The serpentine tube array (2) consists of multiple sets of serpentine tube screens (201) and serpentine tube supports (202).

5. A modular economizer structure according to claim 1, characterized in that: The inlet and outlet ends of the serpentine pipe (2) extend out of the flue shell (1), and the outlets are sealed by a sealing cover.

6. The modular economizer structure according to claim 1, characterized in that: The inlet header (5) and outlet header (6) are fixed on the flue shell (1) by the header bracket (7).

7. A modular economizer structure according to claim 1, characterized in that: The support beam (4) is a "well" shaped frame formed by welding together multiple large beams (401) and multiple small beams (402); the large beams (401) are also provided with lifting lugs (8) for lifting.

8. A modular economizer structure according to claim 1, characterized in that: When the modular economizer structures are combined into an economizer, each pair of adjacent modular economizer structures are connected by an expansion joint (9).

Images