Steam generating boiler

Abstract

The invention discloses a steam generation boiler in the technical field of boilers. The steam generation boiler comprises a boiler body and a combustor, a combustion chamber is arranged in the boiler body, and a steam generation device is arranged in the combustion chamber; a steam-water separation chamber is arranged above the combustion chamber, and a heat exchange chamber is arranged above the steam-water separation chamber; the steam-water separation chamber and the heat exchange chamber are separated through an upper partition plate, a plurality of heat exchange pipes are vertically arranged in the heat exchange chamber, and heat exchange interlayers are formed between every two adjacent heat exchange pipes and between the heat exchange pipes and the inner wall of the adjacent heat exchange chamber. The lower end of the heat exchange pipe penetrates through the upper partition plate and is communicated with the steam-water separation chamber. The steam-water separation chamber separates a steam-water mixture generated by the steam generation device, and meanwhile steam enters the heat exchange pipe. Pure water is contained in the heat exchange interlayer, a steam area is formed in the area, located above the pure water, of the heat exchange interlayer, and a steam outlet communicated with the steam area is formed in the upper portion of the heat exchange chamber. The steam generator has the advantages that automatic steam generation can be achieved, and meanwhile output of low-pressure clean steam is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of boiler technology, and in particular to a steam generating boiler. Background Technology

[0002] A cryogenic steam generator is disclosed in the prior art, with authorization announcement number CN205979693 U and authorization announcement date of 2017.02.22. The heat source of the cryogenic steam generator is external industrial steam. The industrial steam exchanges heat with the condensate entering through the condensate return port in the heat exchanger. The condensate absorbs heat and vaporizes to generate secondary steam.

[0003] Although existing technology can produce low-temperature secondary steam through industrial steam heat exchange, the equipment is only a steam heat exchange device and has no independent steam production capability. It needs to be connected to external industrial steam to operate, which limits its application scenarios. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a steam generating boiler that can generate steam independently while ensuring the output of low-pressure clean steam.

[0005] To achieve the above-mentioned objectives, the steam generating boiler of this invention adopts the following technical solution:

[0006] A steam generating boiler includes a boiler body and a burner. The boiler body has a combustion chamber connected to the burner, and a steam generating device is installed inside the combustion chamber. A steam-water separation chamber is located above the combustion chamber, and a heat exchange chamber is located above the steam-water separation chamber. The steam-water separation chamber and the heat exchange chamber are separated by an upper partition. Multiple vertically arranged heat exchange tubes are installed in the heat exchange chamber, forming a heat exchange jacket between adjacent heat exchange tubes and between the heat exchange tubes and the inner walls of adjacent heat exchange chambers. The lower ends of the heat exchange tubes pass through the upper partition and connect to the steam-water separation chamber, which separates the steam-water mixture generated by the steam generating device while steam enters the heat exchange tubes. Pure water is contained within the heat exchange jacket, and a steam zone is formed in the area above the pure water. A steam outlet connected to the steam zone is located at the upper part of the heat exchange chamber.

[0007] Preferably, the steam generating device includes multiple vertically arranged finned tubes; a water supply cylinder is provided at the bottom of the boiler body, which contains boiler water; the combustion chamber and the steam-water separation chamber are separated by a lower partition, the upper end of the finned tubes passes through the lower partition and connects to the steam-water separation chamber, and the lower end of the finned tubes extends into the water supply cylinder. Using vertically arranged finned tubes as the steam generating device significantly increases the heating area and enhances the heat transfer effect.

[0008] Preferably, the water supply cylinder is equipped with a boiler water inlet.

[0009] Preferably, the boiler body has a sealed cavity at the top, and the upper ends of multiple heat exchange tubes are connected to the sealed cavity. Connecting the upper ends of multiple heat exchange tubes helps steam accumulate to form a stable high-pressure zone, thereby improving heat exchange efficiency.

[0010] Preferably, a pressure gauge and a safety valve are installed at the top of the sealed cavity. This enables real-time monitoring of the pressure inside the pipe and overpressure relief, ensuring safe operation of the equipment.

[0011] Preferably, a flue pipe is provided on one side of the boiler body, and the flue pipe has a flue outlet; a condenser is arranged inside the flue pipe, and the flue gas in the combustion chamber is condensed by the condenser and discharged from the flue outlet. This effectively recovers waste heat from the flue gas, reduces the flue gas temperature, and improves energy utilization.

[0012] Preferably, the condenser is a condenser tube arranged in a roundabout manner inside the flue pipe, with the inlet of the condenser tube connected to the cold water zone of the pure water tank and the outlet of the condenser tube connected to the hot water zone of the pure water tank.

[0013] Preferably, an energy-saving device is arranged inside the flue gas duct, located upstream of the condenser, and is a circuitous energy-saving pipe arranged inside the flue gas duct; a pure water inlet is provided at the lower part of the heat exchange chamber, the inlet of the energy-saving pipe is connected to the hot water area of ​​the pure water tank, and the outlet of the energy-saving pipe is connected to the pure water inlet. This recovers waste heat from the high-temperature section of the flue gas and directly supplies the heated water to the heat exchange jacket, improving the efficiency of secondary steam generation.

[0014] Preferably, the water level of the boiler water in the finned tube is located between the upper middle section of the finned tube and the top of the finned tube.

[0015] Preferably, the water level of the pure water in the heat exchange jacket is located in the lower section of the heat exchange jacket. This ensures sufficient heat exchange area between the heat exchange tube and the pure water, while also leaving ample steam space at the top.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention integrates steam generation and heat exchange stabilization functions into one unit. It has its own combustion chamber and burner, which can generate steam independently without the need for an external industrial steam source. At the same time, the self-generated primary steam is introduced into the heat exchange tube to accumulate into high-pressure steam, which is then condensed and released to heat the pure water in the heat exchange jacket to produce secondary steam. The secondary steam is low-pressure steam. By utilizing the stability of phase change heat transfer, the pressure of the secondary steam is stabilized, ensuring the stable operation of downstream steam-using equipment. It also realizes the cascade utilization of steam thermal energy, improving energy utilization efficiency while effectively avoiding throttling losses. The overall structure is compact and practical.

[0018] 2. The secondary steam originates from pure water within the heat exchange jacket, completely isolated from the boiler water inside the finned tubes. Even if scale, corrosion, or oxide scale forms on the finned tubes after long-term operation, it will not contaminate the secondary steam. Furthermore, the heat exchange jacket uses pure water as the evaporation medium, enabling the output of clean steam, making it suitable for industries with high steam quality requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of part A;

[0021] Figure 3 for Figure 1 Enlarged view of part B.

[0022] The components include: 1. Boiler body; 2. Steam-water separation chamber; 3. Steam outlet; 4. Steam zone; 5. Heat exchange tubes; 6. Heat exchange jacket; 7. Pure water inlet; 8. Flue gas outlet; 9. Energy-saving pipe; 10. Flue gas pipe; 11. Condensing pipe; 12. Cold water zone of pure water tank; 13. Hot water zone of pure water tank; 14. Burner; 15. Water supply cylinder; 16. Boiler water inlet; 17. Combustion chamber; 18. Finned tubes; 19. Upper baffle; 20. Lower baffle; 21. Sealed cavity; 22. Pressure gauge; 23. Safety valve. Detailed Implementation

[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0024] like Figure 1-3As shown, a steam generating boiler includes a boiler body 1 and a burner 14. The boiler body 1 has a combustion chamber 17 communicating with the burner, and a steam generating device is installed inside the combustion chamber 17. A steam-water separation chamber 2 is located above the combustion chamber 17, and a heat exchange chamber is located above the steam-water separation chamber 2. The steam-water separation chamber 2 and the heat exchange chamber are separated by an upper partition 19. Multiple vertically arranged heat exchange tubes 5 are installed in the heat exchange chamber, and heat exchange jackets 6 are formed between adjacent heat exchange tubes 5 and between heat exchange tubes 5 and the inner walls of adjacent heat exchange chambers. A sealed cavity 21 is located at the top of the boiler body 1, and the upper ends of the multiple heat exchange tubes 5 are... It is connected to the sealed cavity 21; the sealed cavity 21 is equipped with a pressure gauge 22 and a safety valve 23 at the top; the lower end of the heat exchange tube 5 passes through the upper partition 19 and is connected to the steam-water separation chamber 2, which separates the steam-water mixture generated by the steam generator while the steam enters the heat exchange tube 5; the heat exchange jacket 6 is filled with pure water, and the water level of the pure water in the heat exchange jacket 6 is located in the lower section of the heat exchange jacket 6; the area above the pure water in the heat exchange jacket 6 forms a steam zone 4, and the upper part of the heat exchange chamber is equipped with a steam outlet 3 connected to the steam zone 4; the steam generator includes multiple vertically arranged finned tubes 18; the bottom of the boiler body 1 is equipped with a power supply... The boiler water tank 15 contains boiler water and has a boiler water inlet 16. The boiler water level in the finned tube 18 is between the upper middle section and the top of the finned tube 18. The combustion chamber 17 and the steam-water separation chamber 2 are separated by a lower partition 20. The upper end of the finned tube 18 passes through the lower partition 20 and connects to the steam-water separation chamber 2. The lower end of the finned tube 18 extends into the boiler water tank 15. A flue pipe 10 is provided on one side of the boiler body 1. The flue pipe 10 has a flue outlet 8. A condenser is arranged in the flue pipe 10. The flue gas in the combustion chamber 17 is condensed by the condenser and discharged from the flue outlet 8. The condenser is a condenser tube 11 arranged in a roundabout manner inside the flue pipe 10. The inlet of the condenser tube 11 is connected to the cold water zone 12 of the pure water tank, and the outlet of the condenser tube 11 is connected to the hot water zone 13 of the pure water tank. The pure water tank is divided into a cold water zone and a hot water zone. The cold water zone is used to store room temperature pure water, and the hot water zone is used to store pure water preheated by the condenser. An energy-saving device is arranged inside the flue pipe 10. The energy-saving device is located upstream of the condenser and is an energy-saving tube 9 arranged in a roundabout manner inside the flue pipe 10. A pure water inlet 7 is provided at the bottom of the heat exchange chamber. The inlet of the energy-saving tube 9 is connected to the hot water zone 13 of the pure water tank, and the outlet of the energy-saving tube 9 is connected to the pure water inlet 7.

[0025] The specific working process and principle of this invention: The burner 14 starts, generating a high-temperature flame and flue gas in the combustion chamber 17, which heats the boiler water in the water supply cylinder 15 and finned tube 18. The boiler water boils, and the resulting steam-water mixture rises through the finned tube 18 into the steam-water separation chamber 2. The separated primary steam enters the heat exchange tube 5, while the unvaporized water flows back to the finned tube 18. Because a closed area is formed at the upper end of the heat exchange tube 5, the primary steam accumulates inside the tube, forming high-pressure steam. A pressure gauge 22 and a safety valve 23 are installed at the top of this closed area to monitor the pressure inside the tube in real time and release pressure when overpressure occurs, ensuring safe operation. The primary steam releases heat inside the heat exchange tube 5, heating the pure water in the heat exchange jacket 6, causing it to evaporate and generate secondary steam. The secondary steam is low-pressure steam, and it accumulates in the upper part of the heat exchange jacket 6. Zone 4, and finally output from steam outlet 3 for use; at the same time, the primary steam releases heat in heat exchange tube 5 and condenses into water, which flows back to the boiler water and participates in the circulation; simultaneously, the high-temperature flue gas generated in combustion chamber 17 enters exhaust pipe 10, first flowing through the economizer, and the hot water flowing in the energy-saving tube 9 comes from the hot water area of ​​the pure water tank. The flue gas further heats the hot water in the energy-saving tube 9, and after raising its temperature, it enters the heat exchange jacket 6 through the pure water inlet 7; after heat exchange by the economizer, the flue gas continues to flow into the condenser, and the cold water flowing in the condenser tube 11 comes from the cold water area of ​​the pure water tank. The flue gas preheats the cold water in the condenser tube 11, and after raising its temperature, it flows into the hot water area of ​​the pure water tank, providing a preheated water source for the economizer; after the flue gas undergoes two stages of waste heat recovery, its temperature is significantly reduced, and it is finally discharged from exhaust outlet 8, realizing the deep and tiered utilization of the waste heat of the flue gas.

[0026] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention 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 inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A steam generating boiler, characterized in that: The system includes a boiler body and a burner. The boiler body has a combustion chamber connected to the burner, and a steam generator is installed inside the combustion chamber. Above the combustion chamber is a steam-water separation chamber, and above the steam-water separation chamber is a heat exchange chamber. The steam-water separation chamber and the heat exchange chamber are separated by an upper partition. Multiple vertically arranged heat exchange tubes are installed in the heat exchange chamber, forming a heat exchange jacket between adjacent heat exchange tubes and between the heat exchange tubes and the inner walls of adjacent heat exchange chambers. The lower ends of the heat exchange tubes pass through the upper partition and connect to the steam-water separation chamber, which separates the steam-water mixture generated by the steam generator while steam enters the heat exchange tubes. The heat exchange jacket contains pure water, and the area above the pure water in the heat exchange jacket forms a steam zone. The upper part of the heat exchange chamber has a steam outlet connected to the steam zone.

2. The steam generating boiler according to claim 1, characterized in that: The steam generating device includes multiple finned tubes arranged vertically; a water supply cylinder is provided at the bottom of the boiler body, which contains boiler water; the combustion chamber and the steam-water separation chamber are separated by a lower partition, the upper end of the finned tube passes through the lower partition and connects to the steam-water separation chamber, and the lower end of the finned tube extends into the water supply cylinder.

3. The steam generating boiler according to claim 2, characterized in that: The water supply cylinder is equipped with a boiler water inlet.

4. The steam generating boiler according to claim 1, characterized in that: The boiler body has a sealed cavity at the top, and the upper ends of multiple heat exchange tubes are connected to the sealed cavity.

5. The steam generating boiler according to claim 4, characterized in that: A pressure gauge and a safety valve are installed at the top of the sealed cavity.

6. The steam generating boiler according to claim 1, characterized in that: A flue pipe is provided on one side of the boiler body, and the flue pipe has a flue outlet; a condenser is arranged inside the flue pipe, and the flue gas in the combustion chamber is condensed by the condenser and discharged from the flue outlet.

7. The steam generating boiler according to claim 6, characterized in that: The condenser is a condenser tube arranged in a roundabout manner inside the flue pipe. The inlet of the condenser tube is connected to the cold water zone of the pure water tank, and the outlet of the condenser tube is connected to the hot water zone of the pure water tank.

8. The steam generating boiler according to claim 6, characterized in that: An energy-saving device is installed inside the flue pipe, located upstream of the condenser. The energy-saving device is a circuitous energy-saving pipe arranged inside the flue pipe. A pure water inlet is provided at the lower part of the heat exchange chamber. The inlet of the energy-saving pipe is connected to the hot water area of ​​the pure water tank, and the outlet of the energy-saving pipe is connected to the pure water inlet.

9. The steam generating boiler according to claim 2, characterized in that: The water level of the boiler water inside the finned tube is located between the upper middle section of the finned tube and the top of the finned tube.

10. The steam generating boiler according to claim 1, characterized in that: The water level of the pure water in the heat exchange jacket is located in the lower section of the heat exchange jacket.

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