Steam furnace capable of performing multi-stage steam-water separation

Abstract

The utility model discloses a steam furnace capable of performing multi-stage steam-water separation. The steam furnace capable of performing multi-stage steam-water separation comprises a flue barrel, an upper header is arranged at the top of the flue barrel, a steam discharge pipe seat is arranged at the top of the upper header, a lower header is arranged at the bottom of the flue barrel, a plurality of inner ring pipe bodies and outer ring pipe bodies are annularly arranged in the flue barrel, and the inner ring pipe bodies and the outer ring pipe bodies are communicated with the upper header and the lower header. A first steam-water separator, a second steam-water separator and a third steam-water separator are sequentially arranged in an inner cavity of the upper collecting box from bottom to top, the first steam-water separator is a cover body connected to the outer side of an inner cylinder of the upper collecting box in a sleeving mode, the cover body separates air outlets of the inner ring pipe body and the outer ring pipe body, and a shutter opening is formed in one side of the cover body. The utility model solves the problem that the steam quality is difficult to guarantee in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of steam generating equipment technology, and in particular to a steam boiler capable of multi-stage steam-water separation. Background Technology

[0002] A Chinese utility model patent with publication number CN217635563U, entitled "A Fully Premixed Through-Flow Steam Boiler," discloses a boiler with a feedwater chamber at the bottom, connected to a booster pump, and a steam chamber at the top. Both the feedwater and steam chambers are annular structures, with two rows of stainless steel finned tubes connected to the feedwater and steam chambers at their respective ends. A steam-water separation device is located at the top of the steam chamber, with a steam outlet at its top. The steam-water separation device includes a lower louvered perforated plate structure and an upper perforated plate separation cylinder structure. This is a two-stage steam-water separation structure. The first stage, the louvered perforated plate structure, uses steam evaporation to hammer the louvers, initially separating moisture from the steam. The second stage, the perforated plate separation cylinder structure, further separates the steam through the annular structure, ensuring the dryness of the produced steam. However, the two rows of stainless steel finned tubes are located in different positions, resulting in different heating conditions. The stainless steel finned tubes on the inner side are close to the high-temperature center of the furnace, where the heat load is very high, and the water inside the tubes will vaporize rapidly and violently. During this violent vaporization process, a large amount of steam is generated quickly, which easily carries some small water droplets into the steam flow, just like some water droplets are carried away by steam in boiling water. This increases the moisture content of the steam, resulting in low steam dryness. When mixed with the steam generated by the heated stainless steel finned tubes on the outer side, it will lower the overall steam dryness, making it difficult to guarantee steam quality. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a steam boiler that can perform multi-stage steam-water separation to ensure steam quality.

[0004] To achieve the above objectives, the technical solution adopted by the steam boiler capable of multi-stage steam-water separation of this utility model is as follows:

[0005] A steam boiler capable of multi-stage steam-water separation includes a flue body, an upper header at the top of the flue body, a steam discharge pipe seat at the top of the upper header, and a lower header at the bottom of the flue body. Several inner and outer ring pipes are arranged circumferentially within the flue body, connecting the upper and lower headers. The upper header's inner cavity is provided with a first steam-water separator, a second steam-water separator, and a third steam-water separator, arranged sequentially from bottom to top. The first steam-water separator is a cover fitted onto the outside of the upper header's inner cylinder, separating the outlets of the inner and outer ring pipes. A louvered window is provided on one side of the cover.

[0006] Preferably, the second steam-water separator includes several inner baffles and outer baffles. The inner baffles are fixedly connected to the inner cylinder of the upper header, and the outer baffles are fixedly connected to the outer cylinder of the upper header. The inner and outer baffles are arranged alternately to form a serpentine channel through which steam passes.

[0007] Preferably, the third steam-water separator is an orifice plate separator cylinder structure installed at the air inlet of the steam discharge pipe seat.

[0008] Preferably, the louvered window is located on the opposite side of the perforated plate separation cylindrical structure.

[0009] Preferably, the inner tube is a stainless steel plain tube, and the outer tube is a stainless steel finned tube.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] The steam coming out of the inner ring tube is first separated into steam and water by the cover, and the dryness is improved. Then it is mixed with the steam coming out of the outer ring tube to avoid lowering the overall steam dryness. The whole steam then passes through the second and third steam and water separators for further steam and water separation, thereby ensuring the dryness of the produced steam and ensuring steam quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the steam furnace capable of multi-stage steam-water separation according to this utility model;

[0013] Among them, 1 is the flue body, 2 is the upper header, 21 is the inner cylinder of the upper header, 22 is the outer cylinder of the upper header, 3 is the steam discharge pipe seat, 4 is the lower header, 5 is the inner ring pipe body, 6 is the outer ring pipe body, 7 is the first steam-water separator, 71 is the louver window, 8 is the second steam-water separator, 81 is the inner baffle, 82 is the outer baffle, and 9 is the third steam-water separator. Detailed Implementation

[0014] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present 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.

[0015] like Figure 1As shown, a steam boiler capable of multi-stage steam-water separation includes a flue body 1, an upper header 2 installed at the top of the flue body, a steam discharge pipe seat 3 installed at the top of the upper header, a lower header 4 installed at the bottom of the flue body, and several inner ring pipes 5 and outer ring pipes 6 arranged circumferentially inside the flue body. The inner ring pipes are made of stainless steel plain tubes, and the outer ring pipes are made of stainless steel finned tubes. The inner and outer ring pipes connect the upper and lower headers. A first steam-water separator 7, a second steam-water separator 8, and a third steam-water separator 9 are installed sequentially from bottom to top inside the upper header. The third steam-water separator is installed at the steam discharge pipe seat for air intake. The orifice plate separation cylinder structure at the opening has a first steam-water separator, which is a cover fitted on the outside of the inner cylinder 21 of the upper header. The cover separates the outlets of the inner and outer ring tubes. A louvered window 71 is opened on one side of the cover. The louvered window is located on the opposite side of the orifice plate separation cylinder structure to increase the stroke of the steam produced by the inner ring tube and improve its dryness. The second steam-water separator includes several inner baffles 81 and outer baffles 82. Both the inner and outer baffles are annular plates. The inner baffles are fixed to the inner cylinder of the upper header, and the outer baffles are fixed to the outer cylinder 22 of the upper header. The inner and outer baffles are arranged alternately to form a serpentine channel for steam to pass through.

[0016] The specific working process and principle of this utility model: Water in the inner and outer ring tubes is heated and vaporized. Since the inner ring tube is close to the high-temperature center of the furnace, the heat load is very high, and the generated steam has poor dryness. The poorly dry steam impacts the top wall of the hood, and a large part of the water is separated out. The steam with improved dryness is discharged from the hood through the louver window and mixes with the steam generated by the outer ring tube. The mixed steam has a moderate dryness. When the moderately dry steam passes through the serpentine channel, it impacts the inner and outer baffles and separates out some water, forming high-quality steam. The high-quality steam then passes through the perforated plate separation cylinder structure to separate out some water, further improving the dryness and ensuring the quality of the steam discharged from the steam discharge pipe seat.

Claims

1. A steam boiler capable of multi-stage steam-water separation, comprising a flue gas cylinder, an upper header provided at the top of the flue gas cylinder, a steam discharge pipe seat provided at the top of the upper header, a lower header provided at the bottom of the flue gas cylinder, and a plurality of inner and outer ring pipes arranged circumferentially within the flue gas cylinder, the inner and outer ring pipes connecting the upper and lower headers, characterized in that: The upper header inner cavity is provided with a first steam-water separator, a second steam-water separator and a third steam-water separator from bottom to top. The first steam-water separator is a cover that is sleeved on the outside of the upper header inner cylinder. The cover separates the air outlets of the inner and outer ring pipes. A louvered window is provided on one side of the cover.

2. The steam furnace capable of multi-stage steam-water separation according to claim 1, characterized in that: The second steam-water separator includes several inner baffles and outer baffles. The inner baffles are fixedly connected to the inner cylinder of the upper header, and the outer baffles are fixedly connected to the outer cylinder of the upper header. The inner and outer baffles are arranged alternately to form a serpentine channel through which steam passes.

3. The steam furnace capable of multi-stage steam and water separation according to claim 1, characterized in that: The third steam-water separator is an orifice plate separator cylinder structure installed at the air inlet of the steam discharge pipe seat.

4. The steam furnace capable of multi-stage steam-water separation according to claim 3, characterized in that: The louvered window is located on the opposite side of the perforated plate separation cylindrical structure.

5. The steam furnace capable of multi-stage steam and water separation according to claim 1, characterized in that: The inner tube is a stainless steel plain tube, and the outer tube is a stainless steel finned tube.

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