An indirect heating steam generator

Abstract

This utility model relates to an indirect heating steam generator, comprising: a furnace body; two heat exchangers on one side of the furnace body; a condenser on the other side of the furnace body; a burner on the side of the furnace body away from the condenser; a steam outlet between the two heat exchangers; an atmospheric pressure water tank on one side of the condenser; a water pump at the drain outlet of the atmospheric pressure water tank; a flue gas outlet on the right side of the condenser; a water inlet at the top of the condenser; a water supply pipe connected to the water pump; one end of the water supply pipe connected to the atmospheric pressure water tank; and the other end of the water supply pipe connected to the two heat exchangers. A steam connection pipe and a water connection pipe are provided between the two heat exchangers, and the water connection pipe is connected to the furnace body. The beneficial effects of this utility model are: the water in the steam generator circulates within the system, reducing scale formation and extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, specifically to an indirect heating steam generator. Background Technology

[0002] Steam has a wide range of uses in national production and daily life. In daily life, it is used for steaming rice, steaming buns, cooking, sauna, disinfection, and beauty. In production, it is used for chemical heating, washing and dyeing, pharmaceuticals, building materials production, and food production. Therefore, steam generators were developed.

[0003] In existing steam generators, the water inside the evaporator cannot circulate during use, which easily leads to the accumulation of scale, thus greatly shortening the service life of the evaporator. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application proposes an indirect heating steam generator in which water circulates within the system, reducing scale formation and extending equipment lifespan.

[0005] This utility model provides the following technical solution: an indirect heating steam generator, comprising: a furnace body, two heat exchangers on one side of the furnace body, a condenser on the other side of the furnace body, a burner on the side of the furnace body away from the condenser, a steam outlet between the two heat exchangers, an atmospheric pressure water tank on one side of the condenser, a water pump at the drain outlet of the atmospheric pressure water tank, a flue gas outlet on the right side of the condenser, and a water inlet on the top of the condenser.

[0006] As a preferred embodiment of this utility model, a water pump is connected to a water delivery pipe, one end of which is connected to an atmospheric pressure water tank, and the other end of which is connected to two heat exchangers.

[0007] As a preferred embodiment of this utility model, a steam connection pipe and a water connection pipe are provided between the two heat exchangers, and the water connection pipe is connected to the furnace body.

[0008] As a preferred embodiment of this utility model, the condenser is provided with a circulating water pipe inside, and one end of the circulating water pipe is connected to the water inlet.

[0009] As a preferred embodiment of this utility model, a gas supply pipe is connected to the steam outlet of the furnace body, and the gas supply pipe is connected to an adjacent heat exchanger.

[0010] As a preferred embodiment of this utility model, the burner is provided with a gas inlet, and the gas inlet is matched with the burner.

[0011] As a preferred embodiment of this utility model, a return water pipe is provided on the right side of the atmospheric pressure water tank, and the return water pipe is connected to the circulating water pipe.

[0012] The beneficial effects of this utility model are: 1. This utility model discloses an indirect heating steam generator. Water from an atmospheric pressure water tank is pumped into a heat exchanger, absorbs heat from the flue gas, and then enters a secondary heat exchanger. In the secondary heat exchanger, it is heated to generate steam. The water in the primary heat exchanger circulates within the system without increasing or decreasing, resulting in almost no scale buildup and extending the equipment's service life. 2. This utility model discloses an indirect heating steam generator, which is equipped with a heat exchanger. This allows for a smaller water volume in the primary heat exchanger, greatly reducing the risk of explosion. At the same time, it increases the inlet water temperature entering the secondary heat exchanger, which can reduce the heat exchange area and volume of the secondary heat exchanger. The addition of a condenser and an atmospheric pressure water tank improves the thermal efficiency and safety of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the atmospheric pressure water tank, a component of this utility model. Figure 3 This is a structural schematic diagram of the burner component of this utility model.

[0014] In the diagram: 1. Furnace body; 2. Burner; 3. Gas inlet; 4. Heat exchanger; 5. Steam outlet; 6. Flue gas outlet; 7. Water inlet; 8. Atmospheric pressure water tank; 9. Water pump; 10. Gas supply pipe; 11. Circulating water pipe; 12. Water supply pipe; 13. Condenser; 14. Return water pipe. Detailed Implementation

[0015] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Example like Figures 1 to 3 As shown, an indirect heating steam generator includes: a furnace body 1, two heat exchangers 4 on one side of the furnace body 1, a condenser 13 on the other side of the furnace body 1, a burner 2 on the side of the furnace body 1 away from the condenser 13, a gas inlet 3 on the burner 2, the gas inlet 3 and the burner 2 being matched, a steam outlet 5 between the two heat exchangers 4, an atmospheric pressure water tank 8 on one side of the condenser 13, a water pump 9 at the drain outlet of the atmospheric pressure water tank 8, a flue gas outlet 6 on the right side of the condenser 13, and a water inlet 7 on the top of the condenser 13.

[0017] In this embodiment, a water pump 9 is connected to a water supply pipe 12. One end of the water supply pipe 12 is connected to an atmospheric pressure water tank 8, and the other end of the water supply pipe 12 is connected to two heat exchangers 4.

[0018] In this embodiment, a steam connection pipe and a water connection pipe are provided between the two heat exchangers 4. The water connection pipe is connected to the furnace body 1. A gas supply pipe 10 is connected to the steam outlet of the furnace body 1. The gas supply pipe 10 is connected to the adjacent heat exchanger 4. The primary heat exchanger 4 absorbs combustion heat to generate high-temperature steam. The high-temperature steam heats the water in the secondary heat exchanger 4 through condensation heat exchange, generating lower-temperature steam that is output to the outside.

[0019] In this embodiment, a return water pipe 14 is provided on the right side of the atmospheric pressure water tank 8. The return water pipe 14 is connected to the circulating water pipe 11. The condenser 13 is provided with a circulating water pipe 11 inside. One end of the circulating water pipe 11 is connected to the water inlet 7. The cold water input from the outside flows through the condenser 13 through the water inlet 7 on the atmospheric pressure condenser 13 first, and enters the atmospheric pressure water tank 8 after absorbing the waste heat of the tail flue gas.

[0020] Working Principle: This utility model discloses an indirect heating steam generator. A secondary heat exchanger 4 is placed above a primary heat exchanger 4. The primary heat exchanger 4 absorbs combustion heat to generate higher-temperature steam. This higher-temperature steam heats the water in the secondary heat exchanger 4 through condensation heat exchange, generating lower-temperature steam which is output. The higher-temperature steam, after cooling, returns to the primary heat exchanger 4 by gravity. Externally input cold water flows through the inlet 7 of the atmospheric pressure condenser 13, absorbing waste heat from the tail flue gas before entering the atmospheric pressure water tank 8. The water in the atmospheric pressure water tank 8 is then pumped into the heat exchanger by a water pump 9. After absorbing heat from the flue gas, the water in the primary heat exchanger 4 enters the secondary heat exchanger 4, where it is heated to produce steam. The water in the primary heat exchanger 4 circulates within the system without increasing or decreasing, resulting in almost no scale buildup and extending the equipment's service life. The inclusion of the primary heat exchanger 4 allows for a smaller water volume, significantly reducing the risk of explosion. It also increases the inlet water temperature into the secondary heat exchanger 4, reducing its heat exchange area and volume. The inclusion of the condenser 13 and the atmospheric pressure water tank 8 further enhances the equipment's thermal efficiency and safety.

[0021] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0022] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An indirectly heated steam generator, characterized by include: The furnace body has two heat exchangers on one side and a condenser on the other side. A burner is located on the side of the furnace body away from the condenser. A steam outlet is located between the two heat exchangers. An atmospheric pressure water tank is located on one side of the condenser. A water pump is located at the drain outlet of the atmospheric pressure water tank. A flue gas outlet is located on the right side of the condenser. A water inlet is located on the top of the condenser.

2. An indirectly heated steam generator according to claim 1, characterised in that The water pump is connected to a water delivery pipe. One end of the water delivery pipe is connected to an atmospheric pressure water tank, and the other end of the water delivery pipe is connected to two heat exchangers.

3. An indirectly heated steam generator according to claim 1, wherein A steam connection pipe and a water connection pipe are provided between the two heat exchangers, and the water connection pipe is connected to the furnace body.

4. An indirectly heated steam generator according to claim 1, wherein The condenser has an internal circulating water pipe, one end of which is connected to the water inlet.

5. An indirectly heated steam generator according to claim 1, wherein A gas supply pipe is connected to the steam outlet of the furnace body, and the gas supply pipe is connected to the adjacent heat exchanger.

6. An indirectly heated steam generator according to claim 1, wherein The burner is equipped with a gas inlet, which is matched with the burner.

7. An indirectly heated steam generator according to claim 1, wherein The atmospheric pressure water tank has a return water pipe on the right side, which is connected to the circulating water pipe.

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