Normal-pressure high-temperature steam boiler

Abstract

A normal-pressure high-temperature steam boiler comprises an outer wall, a combustion chamber in the boiler, a water tank, a smoke mixing box, a smoke exhaust box, a steam-water separator on the upper portion of a boiler body, a low-position heat exchange smoke pipe set, a high-position heat exchange pipe set and a smoke exhaust pipeline. According to the improvement, a steam reheater is arranged in a smoke mixing box connecting the low-position heat exchange smoke pipe set and the high-position heat exchange smoke pipe set, the steam reheater is composed of a steam circulation box and a plurality of smoke circulation pipes penetrating through the steam circulation box, and a steam conveying pipe is connected between the steam circulation box in the steam reheater and a steam-water separator. And a high-temperature steam output pipe is arranged on a steam circulating box in the steam reheater. The steam reheating device has the advantages that the steam reheating device is installed in the smoke mixing box, a steam boiler running under normal pressure can be used for producing high-temperature steam, and the used equipment is simple in structure, easy to manufacture, stable in running and low in manufacturing cost and running cost. Compared with a high-pressure steam boiler, the safety performance is high.

Description

Technical Field

[0001] This utility model belongs to the field of heating, specifically relating to boilers for producing steam. Background Technology

[0002] Existing civilian-use atmospheric pressure steam boilers produce steam at temperatures no higher than the boiling point of water (100°C). To obtain high-temperature steam above the boiling point, high-pressure boilers are typically used, which increase the pressure inside the furnace. This requires improving the overall strength of the boiler and adding a corresponding pressure control system, leading to increased manufacturing and operating costs, and placing it in the category of high-risk production equipment. Utility Model Content

[0003] The purpose of this invention is to provide an atmospheric pressure high-temperature steam boiler for generating high-temperature steam above 100°C, overcoming the shortcomings of existing technologies that can only use high-pressure boilers to produce high-temperature steam.

[0004] This utility model includes: an outer wall constituting the boiler as a whole; a combustion chamber, a water tank, a smoke mixing box, and a smoke exhaust box inside the furnace; a steam-water separator at the top of the furnace body; a low-level heat exchange flue pipe assembly passing through the lower part of the water tank and connecting the combustion chamber and the smoke mixing box; a high-level heat exchange pipe assembly passing through the upper part of the water tank and connecting the smoke mixing box and the smoke exhaust box; and a smoke exhaust pipe connecting the smoke exhaust box and the outside of the furnace. The improvement is that a steam reheater is installed in the smoke mixing box. The steam reheater consists of a steam flow box and multiple flue gas flow pipes passing through the steam flow box. A steam supply pipe connects the steam flow box and the steam-water separator in the steam reheater. A high-temperature steam external supply pipe is installed on the steam flow box in the steam reheater.

[0005] The advantages of this invention are: by installing a steam reheating device inside the mixing chamber, a steam boiler operating at atmospheric pressure can produce high-temperature steam (finished steam temperature can reach 150-160℃). Furthermore, the equipment used is simple in structure, easy to manufacture, operates stably, and has low manufacturing and operating costs. Compared to high-pressure steam boilers, it offers higher safety performance. Attached Figure Description

[0006] Figure 1 This is the overall front sectional view of the present utility model.

[0007] Figure 2 This is a perspective view of the steam reheater of this utility model. Detailed Implementation

[0008] See Figure 1 , Figure 2This utility model includes: an outer wall 1 constituting the boiler as a whole, an insulation layer on the outer wall 1, a combustion chamber 12 on the lower front side of the furnace, a water tank 2 located in the middle of the front-rear direction of the furnace, a mixing chamber 8 on the rear side of the water tank 2, a flue gas box 3 on the front side of the water tank 2, a steam-water separator 5 on the upper part of the furnace body, a low-level heat exchange flue gas pipe group 11 passing through the lower part of the water tank 2 and connecting the combustion chamber 12 and the mixing chamber 8, a high-level heat exchange pipe group 10 passing through the upper part of the water tank 2 and connecting the mixing chamber 8 and the flue gas box 3, and a flue gas pipe 4 connecting the flue gas box 3 and the outside of the furnace; a steam reheater 9 is provided in the upper part of the mixing chamber 8, the steam reheater 9 is composed of a steam flow box 9-1 and multiple flue gas flow pipes 9-2 passing through the steam flow box 9-1, a steam transmission pipe 6 is connected between the lower part of the steam flow box 9-1 in the steam reheater and the steam-water separator 5, and a high-temperature steam external transmission pipe 7 is installed at the upper end of the steam flow box 9-1 in the steam reheater.

Claims

1. An atmospheric pressure high-temperature steam boiler, comprising: The outer wall that makes up the whole boiler, the combustion chamber, water tank, smoke mixing box, and exhaust box inside the furnace, the steam-water separator at the top of the furnace body, the low-level heat exchange flue tube group that passes through the lower part of the water tank and connects the combustion chamber and the smoke mixing box, the high-level heat exchange tube group that passes through the upper part of the water tank and connects the smoke mixing box and the exhaust box, and the exhaust pipe that connects the exhaust box and the outside of the furnace. Its features include: a steam reheater is installed inside the flue gas mixing box, the steam reheater consists of a steam flow box and multiple flue gas flow pipes passing through the steam flow box, a steam supply pipe is connected between the steam flow box and the steam-water separator in the steam reheater, and a high-temperature steam external supply pipe is installed on the steam flow box in the steam reheater.

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