Pipe frame type steam source
Through the design of pipe frame structure and multi-pass water-cooled wall pipes, the problems of temperature differential stress and steel consumption of pipe plate steam boilers are solved, and the effect of facilitating maintenance and cleaning, reducing waste of steel resources and high-pressure gas supply is achieved.
Patent Information
- Application Number
- CN202323383227.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-12
AI Technical Summary
The existing pipe plate steam boiler generates temperature difference stress when the temperature difference is large, which limits the strength of the shell pressure, resulting in large structure volume, inconvenient maintenance and cleaning, and large steel consumption, inconvenient air supply path, and difficult to achieve high pressure. Supply gas.
It adopts a pipe frame structure, through modular settings and multi-pass water-cooled wall pipes, simplifies assembly and disassembly, reduces the buckling baffle, shortens the gas supply path, and achieves high-pressure gas supply.
It achieves easy mechanical cleaning and maintenance, reduces waste of steel resources, reduces the shell pressure being limited by expansion joint strength, and improves fluid cleanliness and gas supply efficiency.
Smart Images
Figure CN222186900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam boilers, in particular to a pipe rack type steam source. Background Art
[0002] In the prior art, boilers usually adopt a tube sheet structure. When the temperature difference between the heat exchange tube and the shell is large (greater than 50°C), temperature difference stress is generated, and an expansion joint needs to be set on the shell. Therefore, the shell side pressure cannot be too high due to the strength of the expansion joint. This structure is large in size and cannot be mechanically cleaned. It is not convenient for maintenance, assembly and transportation. In addition, the steel consumption is large during the assembly process, which wastes more steel resources. At the same time, due to the use of a tube sheet structure, the gas supply path becomes longer, and it is not easy to achieve high-pressure gas supply.
[0003] In view of this, the present utility model is proposed. Utility Model Content
[0004] The utility model provides a pipe rack type steam source.
[0005] This application provides the following technical solutions:
[0006] A pipe rack type steam source, comprising:
[0007] Water-cooled and air-cooled burners are used to burn the combustion gas entering through the air intake pipe to generate heat and high-temperature flue gas;
[0008] The boiler body is connected with the water-cooled and air-cooled burners to absorb the heat flowing through the boiler body and the heat in the high-temperature flue gas to form relatively high-temperature flue gas. The boiler body has a boiler header, and the boiler header is connected with multiple boiler water-cooled wall tubes;
[0009] The energy-saving part is connected with the boiler body to absorb the heat in the relatively high-temperature flue gas flowing through the energy-saving part to form low-temperature flue gas. The energy-saving part has an economizer header, and the economizer header is connected with multi-pass economizer water-cooled wall tubes;
[0010] The preheating part includes an air preheater, the air preheater is connected with the energy-saving part to preheat the air entering through the air preheater, and the preheating part is connected with the water-cooled and air-cooled burners.
[0011] Furthermore, the preheating unit also includes a fan, which connects the air preheater and the water-cooled and air-cooled burner.
[0012] Furthermore, it also includes an air duct, the air duct connects the fan and the water-cooled air-cooled burner, and the air duct is connected to a premixer.
[0013] Furthermore, the preheating part, the air duct, the water-cooled and air-cooled burners, the boiler body and the energy-saving part are connected by connecting flanges.
[0014] By adopting the above technical solution, the utility model has the following beneficial effects:
[0015] Through the modular setting, compared with the tube-plate boiler, the preheating part, the energy-saving part, the boiler body, and the water-cooled and air-cooled burners are easy to disassemble and assemble, and easy to mechanically clean. In addition, through the multi-pass boiler water-cooled wall tubes and the multi-pass economizer water-cooled wall tubes, compared with the tube-plate boiler, the installation of the baffle is reduced, the waste of steel resources is reduced, and the limitation of the shell side pressure by the strength of the expansion joint is reduced. The pipe rack steam source composed of the multi-pass boiler water-cooled wall tubes and the boiler header and the multi-pass economizer water-cooled wall tubes and the economizer header is easy to clean the fluid and not easy to scale, and also shortens the gas supply path, which is convenient for realizing high-pressure gas supply.
[0016] The specific implementation modes of the present utility model are further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:
[0018] Figure 1 A schematic diagram of the structure of a pipe rack steam source provided in this embodiment;
[0019] Figure 2 for Figure 1 A top view of the provided pipe rack steam source.
[0020] Figure numerals: 1. preheating unit; 2. energy-saving unit; 3. boiler body; 4. water-cooled and air-cooled burner; 5. air duct; 6. economizer header; 7. boiler header; 8. multi-pass boiler water-cooled wall tube; 9. multi-pass economizer water-cooled wall tube; 11. fan; 12. air preheater.
[0021] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0022] See also Figure 1 to Figure 2As shown, the embodiment of the present application provides a pipe rack steam source, including a water-cooled air-cooled burner 4, a boiler body 3, an energy-saving part 2 and a preheating part 1. The water-cooled air-cooled burner 4 is used to burn the combustion gas entering through the intake pipe to generate heat and high-temperature flue gas. The boiler body 3 is connected to the water-cooled air-cooled burner 4 to absorb the heat flowing through the boiler body 3 and the heat in the high-temperature flue gas to form a relatively high-temperature flue gas. The boiler body 3 has a boiler header 7, and the boiler header 7 is connected to a multi-pass boiler water-cooled wall tube 8. The energy-saving part 2 is connected to the boiler body 3 to absorb the heat in the relatively high-temperature flue gas flowing through the energy-saving part 2 to form a low-temperature flue gas. The energy-saving part 2 has an economizer header 6, and the economizer header 6 is connected to a multi-pass economizer water-cooled wall tube 9. The preheating part 1 includes an air preheater 12, and the air preheater 12 is connected to the energy-saving part 2 to preheat the air entering through the air preheater 12. The preheating part 1 is connected to the water-cooled air-cooled burner 4.
[0023] It should be noted that if the tube fluid passes through the tube pass once, it is called a single tube pass. When the heat transfer area of the heat exchanger is large and the number of tubes required is large, in order to increase the flow rate of the tube fluid, the heat exchange tubes are often divided into several groups evenly, so that the fluid can go back and forth in the tube for many times in turn, which is called multiple tube passes. The number of tube passes can be 2, 4, 6, or 8. If the number of tube passes is too large, although the flow rate of the tube fluid is increased, thereby increasing the convective heat transfer coefficient in the tube, it will also cause the flow coefficient to increase. Therefore, the number of tube passes should not be too many, and 2 tube passes are usually the most common.
[0024] In the above scheme, through modular settings, compared with tube-plate boilers, the preheating part 1, the energy-saving part 2, the boiler body 3, and the water-cooled and air-cooled burner 4 are easy to disassemble and assemble, and easy to mechanically clean. In addition, through the multi-pass boiler water-cooled wall tubes 8 and the multi-pass economizer water-cooled wall tubes 9, compared with tube-plate boilers, the installation of baffles is reduced, the waste of steel resources is reduced, and the limitation of shell-side pressure by the strength of expansion joints is reduced. The tube rack steam source composed of the multi-pass boiler water-cooled wall tubes 8 and the boiler header 7 and the multi-pass economizer water-cooled wall tubes 9 and the economizer header 6 is easy to clean the fluid and not easy to scale, and the gas supply path is shortened, which is convenient for realizing high-pressure gas supply.
[0025] See also Figure 1 As shown, the preheating part 1 also includes a fan 11, which connects the air preheater 12 and the water-cooled and air-cooled burner 4. The fan 11 is used to increase the pressure of the incoming air so that the air can circulate better.
[0026] See also Figure 1 As shown, the pipe rack steam source provided in the embodiment of the present application also includes an air duct 5, which connects the fan 11 and the water-cooled and air-cooled burner 4. The air duct 5 is connected to a premixer, which is used to mix the combustion gas inside the premixer with air.
[0027] The preheating part 1, the air duct 5, the water-cooled air-cooled burner 4, the boiler body 3 and the energy-saving part 2 are connected by a connecting flange, so that the preheating part 1, the air duct 5, the water-cooled air-cooled burner 4, the boiler body 3 and the energy-saving part 2 are easy to repair and assemble.
[0028] Through the modular setting, compared with the tube-plate boiler, the preheating part 1, the energy-saving part 2, the boiler body 3, and the water-cooled and air-cooled burner 4 are easy to disassemble and assemble, and easy to mechanically clean. In addition, through the multi-pass boiler water-cooled wall tubes 8 and the multi-pass economizer water-cooled wall tubes 9, compared with the tube-plate boiler, the installation of the baffle is reduced, the waste of steel resources is reduced, and the limitation of the shell side pressure by the strength of the expansion joint is reduced. The tube rack steam source composed of the multi-pass boiler water-cooled wall tubes 8 and the boiler header 7 and the multi-pass economizer water-cooled wall tubes 9 and the economizer header 6 is easy to clean the fluid and not easy to scale, and also shortens the gas supply path, which is convenient for realizing high-pressure gas supply.
[0029] This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.
Claims
1. A pipe rack steam source, characterized in that: include: A water-cooled air-cooled burner (4), the water-cooled air-cooled burner (4) being used to burn the combustion gas entering through the air intake pipe to generate heat and high-temperature flue gas; A boiler body (3), the boiler body (3) being connected to the water-cooled and air-cooled burners (4) to absorb heat flowing through the boiler body (3) and heat in high-temperature flue gas to form relatively high-temperature flue gas, the boiler body (3) having a boiler header (7), the boiler header (7) being connected to a plurality of boiler water-cooled wall tubes (8); An energy-saving section (2), the energy-saving section (2) being connected to the boiler body (3) to absorb heat from relatively high-temperature flue gas flowing through the energy-saving section (2) to form low-temperature flue gas, the energy-saving section (2) having an economizer header (6), the economizer header (6) being connected to a multi-pass economizer water-cooled wall tube (9); A preheating section (1), the preheating section (1) comprising an air preheater (12), the air preheater (12) being connected to the energy-saving section (2) so as to preheat the air entering through the air preheater (12), and the preheating section (1) being connected to the water-cooled and air-cooled burner (4).
2. The pipe rack steam source according to claim 1, characterized in that: The preheating section (1) further comprises a fan (11), wherein the fan (11) is connected to the air preheater (12) and the water-cooled and air-cooled burner (4).
3. The pipe rack type steam source according to claim 2, characterized in that: It also comprises an air duct (5), wherein the air duct (5) is connected to the fan (11) and the water-cooled and air-cooled burner (4), and the air duct (5) is connected to a premixer.
4. The pipe rack type steam source according to claim 3, characterized in that: The preheating part (1), the air duct (5), the water-cooled and air-cooled burner (4), the boiler body (3) and the energy-saving part (2) are connected via a connecting flange.