Full-volume steam generator furnace body
By implementing full-volume design and optimizing the flue gas flow, the problem of low water volume utilization in the steam generator was solved, resulting in higher steam production capacity and meeting national standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李宗华
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-19
AI Technical Summary
The low water volume utilization rate of existing steam generators leads to limited production capacity and the inability to effectively utilize the water volume in the waste heat utilization zone, thus restricting the production capacity of the steam generators.
The system adopts a full-volume design, which optimizes the flue gas flow by installing disc heat exchange tubes, superheated heat exchangers, atmospheric heat exchangers and atmospheric condensers in the furnace body, and utilizing serpentine heat exchange tubes and manifold heat exchangers to ensure effective utilization of water volume and increase steam generation.
This improved the steam generator's capacity, enabling more efficient steam production and meeting national standards for closed water volume.
Smart Images
Figure CN224261690U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to steam generators, and more particularly to a full-volume steam generator furnace body, belonging to the field of heat exchanger technology. Background Technology
[0002] Small steam generators are used in many decentralized settings such as factories, schools, and research institutes. They have a relatively small installation footprint, quick start-up, and relatively low start-up costs. For these products, the national standards have strict regulations on the water volume enclosed in the furnace body. For example, it is stipulated that the water volume enclosed in the furnace body should be less than or equal to 30L. In the flue gas flow of a steam generator, it generally starts from the combustion zone, the high-temperature heat exchange zone, and the waste heat utilization zone. Steam generation generally occurs in the high-temperature heat exchange zone. The waste heat utilization zone usually uses one or more heat exchangers connected in series. The last stage can be regarded as a condenser. The water inlet of the steam generator enters from the condenser and then flows in the furnace, passing through multiple heat exchange stages to become steam output. In this case, the furnace body is considered closed from the water inlet end of the condenser. Therefore, the water volume in the entire furnace body is considered to be within the water volume range. Only water in the combustion zone and superheated zone can effectively generate steam. For example, if the water volume in the furnace body is 30L, but the water volume in the waste heat utilization zone accounts for 15L, only 15L of water can effectively generate steam. This greatly reduces the volume of water that can effectively generate steam, limiting the production capacity of the steam generator. Summary of the Invention
[0003] The purpose of this invention is to overcome the aforementioned problems existing in existing steam generators and to provide a full-volume steam generator furnace body.
[0004] To achieve the purpose of this utility model, the following technical solution is adopted: a full-volume steam generator furnace body, including a furnace body with a combustion chamber inside, a condenser installed at the rear of the furnace body, the water inlet of the condenser being connected to the outlet of a water pump, the water inlet pipe of the water pump being connected to a water tank, a disc heat exchange tube fixedly installed in the combustion chamber, and a superheated heat exchanger, an atmospheric pressure heat exchanger, and an atmospheric pressure condenser sequentially connected after the combustion chamber, the flue gas generated in the combustion chamber flowing sequentially through the disc heat exchange tube, the superheated heat exchanger, the atmospheric pressure heat exchanger, and the atmospheric pressure condenser, both of which have hot water exchange pipes. The heat transfer medium flows inside the heat exchanger pipes. The inlet of the inlet pump is connected to the inlet of the condenser. The outlet of the condenser is connected to a T-junction pipe. One outlet of the T-junction pipe is connected to the inlet of the atmospheric pressure heat exchanger, and the other outlet is the atmospheric pressure outlet. No valve is installed on the atmospheric pressure outlet. The water at the atmospheric pressure outlet is connected to the water tank. The outlet of the atmospheric pressure heat exchanger is connected to the makeup water pump through a pipeline. The outlet of the makeup water pump is connected to the inlet of the disc heat exchanger tube. The outlet of the disc heat exchanger tube is connected to the inlet of the superheated heat exchanger. The outlet of the superheated heat exchanger is the steam outlet. A pressure gauge is installed at the steam outlet.
[0005] Furthermore, the heat exchange tubes in the atmospheric pressure heat exchanger and atmospheric pressure condenser are all serpentine heat exchange tubes.
[0006] Furthermore, the superheated heat exchanger is equipped with a manifold heat exchanger, which includes a rear upper manifold, a lower manifold, and an upper manifold. The rear upper manifold and the lower manifold are connected by multiple rear heat exchange tubes, and the lower manifold and the front upper manifold are connected by multiple front heat exchange tubes. The steam outlet is located on the front upper manifold. A smoke baffle is fixedly installed between the front upper manifold and the rear upper manifold, and the upper end of the smoke baffle is closed to the furnace top.
[0007] Furthermore, the front and rear heat exchange tubes are arranged in a V-shape.
[0008] The positive and beneficial technical effects of this utility model are as follows: This steam generator has high production capacity, which will be described in detail with reference to specific implementation methods. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall design of this utility model.
[0010] Figure 2 This is a schematic diagram after part of the front furnace wall has been removed.
[0011] Figure 3 yes Figure 1 A magnified diagram of the middle section.
[0012] Figure 4 It is a flue gas flow diagram. Detailed Implementation
[0013] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.
[0014] The labels in the attached diagram are as follows: 1: Combustion chamber; 2: Superheated heat exchanger; 3: Atmospheric pressure heat exchanger; 4: Condenser; 5: Hot water pipe; 6: Condenser inlet; 7: Condenser outlet; 8: Atmospheric pressure outlet; 9: Atmospheric pressure heat exchanger inlet; 10: Atmospheric pressure heat exchanger outlet; 11: Disc heat exchanger inlet; 12: Disc heat exchanger outlet; 13: Superheated heat exchanger inlet; 14: Steam outlet; 15: Disc heat exchanger tube; 16: Front heat exchanger tube; 17: Rear heat exchanger tube; 18: Rear upper manifold; 19: Front upper manifold; 20: Lower manifold; 21: Smoke baffle; 22: Tee.
[0015] The furnace wall can be made of refractory bricks, similar to existing steam generators. During use, pressure gauges, thermometers, safety valves, and other accessories need to be installed at the steam outlet. These accessories, like the water tank, inlet pump, and makeup water pump, are used in conjunction with the furnace body. In this application, "full volume" refers to the water volume in the disc heat exchanger and superheater being less than the required volume.
[0016] A full-volume steam generator furnace body includes a furnace body with a combustion chamber 1 inside. A condenser 4 is installed at the rear of the furnace body. The water inlet 6 of the condenser is connected to the outlet of a water pump. The water inlet pipe of the water pump is connected to a water tank. The water tank, water pump, and makeup water pump are accessories and are not shown in the figure. A disc heat exchange tube 15 is fixedly installed in the combustion chamber. A superheated heat exchanger 1, an atmospheric pressure heat exchanger 2, an atmospheric pressure condenser 3, and a condenser 4 are connected sequentially after the combustion chamber. The condenser is an atmospheric pressure condenser. The flue gas generated in the combustion chamber flows sequentially through the disc heat exchange tube, the superheated heat exchanger, the atmospheric pressure heat exchanger, and the atmospheric pressure condenser. Both the atmospheric pressure heat exchanger and the atmospheric pressure condenser have hot water exchange tubes 5. The heat exchange tubes in the atmospheric pressure heat exchanger and the atmospheric pressure condenser are serpentine heat exchange tubes. The heat transfer medium flows in the heat exchanger pipe. The outlet of the inlet pump is connected to the inlet 6 of the condenser. The outlet 7 of the condenser is connected to a three-way pipe 22. One outlet of the three-way pipe is connected to the inlet 9 of the atmospheric pressure heat exchanger, and the other outlet is the atmospheric pressure outlet 8. No valve is installed on the atmospheric pressure outlet. The water at the atmospheric pressure outlet is connected to the water tank. The outlet 10 of the atmospheric pressure heat exchanger is connected to the makeup water pump through a pipeline. The outlet of the makeup water pump is connected to the inlet 11 of the disc heat exchanger tube. The outlet 12 of the disc heat exchanger tube is connected to the inlet 13 of the superheated heat exchanger. The outlet of the superheated heat exchanger is the steam outlet 14.
[0017] The superheated heat exchanger is equipped with a manifold heat exchanger, which includes a rear upper manifold 18, a lower manifold 20, and a front upper manifold 19. The rear upper manifold and the lower manifold are connected by multiple rear heat exchange tubes 17, and the lower manifold and the front upper manifold are connected by multiple front heat exchange tubes 16. The front and rear heat exchange tubes are arranged in a V-shape. The steam outlet is located on the front upper manifold, and a baffle plate 21 is fixedly installed between the front upper manifold and the rear upper manifold. The upper end of the baffle plate is sealed to the furnace top.
[0018] In this furnace, the water in the atmospheric pressure heat exchanger and atmospheric pressure condenser is connected to the outside through the outlet pipe. The heat medium is always at atmospheric pressure, and there are no valves on the pipes connecting to the outside, so the water will not pose any safety hazards. The water volume after the makeup water pump only needs to meet the required limits. The disc heat exchanger and superheated heat exchanger are located in the high-temperature zone of steam generation, and a relatively large water volume in them can generate a larger amount of steam.
[0019] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.
Claims
1. A full-volume steam generator furnace body, comprising a furnace body, a combustion chamber within the furnace body, a condenser installed at the rear of the furnace body, the water inlet of the condenser being connected to the water outlet of a water pump, and the water inlet pipe of the water pump being connected to a water tank, characterized in that: A disc heat exchanger is fixedly installed in the combustion chamber. A superheated heat exchanger, an atmospheric heat exchanger, and an atmospheric condenser are connected sequentially after the combustion chamber. The flue gas generated in the combustion chamber flows sequentially through the disc heat exchanger, the superheated heat exchanger, the atmospheric heat exchanger, and the atmospheric condenser. Both the atmospheric heat exchanger and the atmospheric condenser have hot water pipes, and the heat medium flows in the hot water pipes. The outlet of the water pump is connected to the inlet of the condenser. A three-way pipe is connected to the outlet of the condenser. One outlet of the three-way pipe is connected to the inlet of the atmospheric heat exchanger, and the other outlet is the atmospheric outlet. The water at the atmospheric outlet is connected to a water tank. The outlet of the atmospheric heat exchanger is connected to a makeup water pump through a pipeline. The outlet of the makeup water pump is connected to the inlet of the disc heat exchanger. The outlet of the disc heat exchanger is connected to the inlet of the superheated heat exchanger. The outlet of the superheated heat exchanger is the steam outlet.
2. A once-through steam generator vessel according to claim 1, characterized in that: The heat exchange tubes in the atmospheric pressure heat exchanger and atmospheric pressure condenser are all serpentine heat exchange tubes.
3. A once-through steam generator vessel according to claim 1, wherein: The superheated heat exchanger is equipped with a manifold heat exchanger, which includes a rear upper manifold, a lower manifold, and a front upper manifold. The rear upper manifold and the lower manifold are connected by multiple rear heat exchange tubes, and the lower manifold and the front upper manifold are connected by multiple front heat exchange tubes. The steam outlet is located on the front upper manifold. A smoke baffle is fixedly installed between the front upper manifold and the rear upper manifold, and the upper end of the smoke baffle is sealed to the furnace top.
4. A once-through steam generator according to claim 3, wherein: The front and rear heat exchange tubes are arranged in a V-shape.