CN216952993U

CN216952993U - Three-pass biomass-fired steam generator

Info

Publication number: CN216952993U
Application number: CN202220007397.7U
Authority: CN
Inventors: 刘亮; 刘文达; 刘文博; 刘杰; 姬超杰; 王伟; 刘迎君; 赵春辉
Original assignee: Henan Hengxin Boiler Manufacturing Co ltd
Current assignee: Henan Hengxin Boiler Manufacturing Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-07-12
Anticipated expiration: 2032-01-05

Abstract

The utility model discloses a three-pass biomass-fired steam generator which comprises a steam generator, wherein a furnace pipe is arranged in the steam generator, a transverse water pipe is arranged in the furnace pipe and is obliquely arranged, two ends of the transverse water pipe are communicated with a water wall pipe, a first flue gas outlet is arranged at the top of the furnace pipe, a second flue gas channel is communicated with the top of the first flue gas outlet and is arranged on the periphery of the water wall pipe, a second flue gas outlet is arranged at the bottom of the second flue gas channel and is connected with a third flue gas channel, the third flue gas channel is arranged on the periphery of the second flue gas channel, a third flue gas outlet is connected with the top of the third flue gas channel, a heat-insulating layer is arranged on the periphery of the steam generator, and the heat-insulating layer is arranged by covering a descending pipe. This three return strokes burn living beings steam generator, compact structure, flue gas high-usage.

Description

Three-pass biomass-fired steam generator

Technical Field

The utility model belongs to the technical field of steam generators, and particularly relates to a three-pass biomass-fired steam generator.

Background

Biomass energy is the important component of renewable energy, in order to solve the energy, the ecological environment problem, biomass energy uses more and more extensively, biomass can not produce harmful substance when burning, can regard as steam generator's fuel, chinese patent No. CN209511965U discloses a fire living beings combination formula steam generator, through with steam generator, flue gas waste heat steam generator and ordinary pressure energy-saving appliance are in the same place, form the steam generator of combination formula, flue gas waste heat steam generator and ordinary pressure energy-saving appliance have realized the reuse to the flue gas waste heat respectively, the utilization ratio of the energy has been improved greatly, improve this structure steam generator inner structure, can further promote flue gas utilization ratio.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a three-pass biomass-fired steam generator.

In order to achieve the purpose, the utility model provides the following technical scheme: a three-pass biomass-fired steam generator comprises a steam generator, wherein a furnace liner is arranged in the steam generator, a lower header is arranged on the periphery of the bottom of the furnace liner, an upper header is arranged on the periphery of the top of the furnace liner, a water wall tube is arranged around the periphery of the furnace liner, the bottom of the water wall tube is communicated with the lower header, the top of the water wall tube is communicated with the upper header, a down tube is arranged on the outer ring of the inside of the steam generator, the top and the bottom of the down tube are respectively communicated with the upper header and the lower header, a steam-water separation plate is arranged in the upper header, the top of the upper header is connected with a hot steam outlet, the side surface of the lower header is respectively connected with a water inlet tube and a sewage discharge tube, a furnace door and a slag removal door are arranged on the front side of the bottom of the steam generator, a transverse water tube is arranged in the furnace liner and is arranged in an inclined manner, the two ends of the transverse water pipe are communicated with the water wall pipe, a first smoke outlet is arranged at the top of the furnace pipe, a second flue is communicated with the top of the first smoke outlet and arranged at the periphery of the water wall pipe, a second smoke outlet is arranged at the bottom of the second flue, the second smoke outlet is connected with a third flue, the third flue is arranged at the periphery of the second flue, a third smoke outlet is connected with the top of the third flue, a heat-insulating layer is arranged at the periphery of the steam generator, and the heat-insulating layer coats the downcomer.

Further, the number of the downcomers is not less than 2.

Further, the third flue gas outlet is connected with a condensing coil of an external economizer.

Compared with the prior art, the utility model has the beneficial effects that: the transverse water pipe is arranged in the furnace pipe, so that the flue gas utilization rate of the first flue in the furnace pipe is improved, the heating area of the transverse water pipe in the furnace pipe is large, and the flame utilization rate is high; the arrangement of the second flue and the third flue can increase the flue gas flow, reduce the flue gas temperature and improve the heat utilization rate of the flue gas; this three return strokes burn living beings steam generator, novel structure, the heat utilization efficiency is high, facilitates the use.

Drawings

Fig. 1 is a schematic front view of the internal structure of the present invention.

Fig. 2 is a schematic view of the cross-sectional structure a-a of fig. 1.

In the figure: the system comprises a steam generator 1, a furnace pipe 2, a water wall pipe 3, a transverse water pipe 4, a first flue gas outlet 5, a second flue gas outlet 6, a second flue gas outlet 7, a third flue gas outlet 8, a lower header 9, an upper header 10, a third flue gas outlet 11, a down pipe 12, a steam-water separation plate 13, a hot steam outlet 14, a heat preservation layer 15, a water inlet pipe 16, a blow-off pipe 17, a slag removal door 18 and a furnace door 19.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to the attached drawings 1-2, the three-pass biomass-fired steam generator comprises a steam generator 1, a furnace pipe 2 is arranged in the steam generator 1, a lower header 9 is arranged on the periphery of the bottom of the furnace pipe 2, an upper header 10 is arranged on the periphery of the top of the furnace pipe 2, a water wall pipe 3 is arranged around the periphery of the furnace pipe 2, the bottom of the water wall pipe 3 is communicated with the lower header 9, the top of the water wall pipe 3 is communicated with the upper header 10, a descending pipe 12 is arranged on the outer ring in the steam generator 1, the top and the bottom of the descending pipe 12 are respectively communicated with the upper header 10 and the lower header 9, a steam-water separation plate 13 is arranged in the upper header 10, a hot steam outlet 14 is connected to the top of the upper header 10, a water inlet pipe 16 and a sewage discharge pipe 17 are respectively connected to the side surface of the lower header 9, a furnace door 19 and a slag removal door 18 are arranged on the front surface of the bottom of the steam generator 1, a transverse water pipe 4 is arranged in the furnace pipe 2, horizontal water pipe 4 sets up for the slope, the both ends of horizontal water pipe 4 all are linked together with water wall pipe 3, the top of furnace pipe 2 is equipped with first exhanst gas outlet 5, the top intercommunication of first exhanst gas outlet 5 has second flue 6, second flue 6 is established in the periphery of water wall pipe 3, the bottom of second flue 6 is equipped with second exhanst gas outlet 7, second exhanst gas outlet 7 is connected with third flue 8, third flue 8 is established in the periphery of second flue 6, the top of third flue 8 is connected with third exhanst gas outlet 11, steam generator 1's periphery is equipped with heat preservation 15, heat preservation 15 cladding downtake 12 sets up.

Further, the number of the downcomers 12 is not less than 2.

Further, the third flue gas outlet 11 is connected to the condensing coil of the external economizer.

The working principle is as follows: external water is conveyed to a lower header 9 through a water inlet pipe 16 by a water pump, biomass is controlled to enter a furnace pipe for combustion, flue gas is fed into a furnace pipe 2, the flue gas upwards passes through the outer wall of a transverse water pipe 4 to heat water in the transverse water pipe 4, the transverse water pipe 4 is communicated with a water wall pipe 3 to further improve the heating speed of the water wall pipe 3, the flue gas continuously upwards enters a second flue 6 through a first flue gas outlet 5 and enters a third flue 8 through a second flue gas outlet 7, water in the lower header 9 enters the water wall pipe 3 to be heated to be changed into steam, the steam enters an upper header 10, the steam is separated by a steam-water separation plate 13, the hot steam is output through a hot steam outlet 14, separation liquid returns to the lower header 9 through a descending pipe 12, the flue gas discharged from the third flue 8 after heat exchange is discharged into an external energy saver through a third flue gas outlet 11 to heat a condensing coil inside the energy saver, further improving the utilization rate of the flue gas.

While there have been shown and described the fundamental principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A three-pass biomass-fired steam generator comprises a steam generator (1), wherein a furnace pipe (2) is arranged in the steam generator (1), a lower header (9) is arranged on the periphery of the bottom of the furnace pipe (2), an upper header (10) is arranged on the periphery of the top of the furnace pipe (2), a water wall pipe (3) is arranged around the periphery of the furnace pipe (2), the bottom of the water wall pipe (3) is communicated with the lower header (9), the top of the water wall pipe (3) is communicated with the upper header (10), a downcomer (12) is arranged on the outer ring in the steam generator (1), the top and the bottom of the downcomer (12) are respectively communicated with the upper header (10) and the lower header (9), a steam-water separation plate (13) is arranged in the upper header (10), and a hot steam outlet (14) is connected to the top of the upper header (10), the side of collection case (9) is connected with inlet tube (16) and blow off pipe (17) respectively down, furnace gate (19) and slag door (18), its characterized in that have openly been seted up to steam generator (1) bottom: a transverse water pipe (4) is arranged inside the furnace pipe (2), the transverse water pipe (4) is obliquely arranged, both ends of the transverse water pipe (4) are communicated with the water wall pipe (3), the top of the furnace pipe (2) is provided with a first flue gas outlet (5), the top of the first flue gas outlet (5) is communicated with a second flue (6), the second flue (6) is arranged at the periphery of the water wall tube (3), a second flue gas outlet (7) is arranged at the bottom of the second flue (6), the second flue gas outlet (7) is connected with a third flue (8), the third flue (8) is arranged at the periphery of the second flue (6), the top of the third flue (8) is connected with a third flue gas outlet (11), the periphery of the steam generator (1) is provided with a heat-insulating layer (15), and the heat-insulating layer (15) is arranged to cover the downcomer (12).

2. The three-pass biomass-fired steam generator of claim 1, wherein: the number of the downcomer (12) is not less than 2.

3. The three-pass biomass-fired steam generator of claim 1, wherein: and the third flue gas outlet (11) is connected with a condensing coil of an external economizer.