CN214840927U

CN214840927U - Waste heat utilization device of vacuum hot water boiler

Info

Publication number: CN214840927U
Application number: CN202022797456.9U
Authority: CN
Inventors: 周锡秀
Original assignee: Guangxi Lisen Thermal Energy Technology Co ltd
Current assignee: Xuzhou Lisen Thermal Energy Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-11-23
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a vacuum hot water boiler waste heat utilization equipment, which comprises an outer shell, both ends and the position that is close to side about the shell are fixed with steam respectively and advance pipe and flue gas calandria, install the water storage box in the shell, steam advances the pipe and is located the water storage box and installs the heat conduction return bend, and the heat conduction return bend wears out the water storage box, the lower extreme middle part of water storage box is provided with cylindrical cavity, be fixed with a plurality of heat transfer pieces on cylindrical cavity's the inside wall, be fixed with a plurality of convex heat conduction strips on cylindrical cavity's the interior roof, be fixed with the moisturizing pipe on the water storage box. The utility model discloses a carry out dual recovery to hot steam and flue gas heat, improve and retrieve the face, set up cylindrical cavity through the water storage box, when the flue gas is discharged, the flue gas detention time is longer, and cooperation heat transfer piece and convex heat conduction strip are more convenient for heat conduction and collection to make heat recovery utilization rate higher.

Description

Waste heat utilization device of vacuum hot water boiler

Technical Field

The utility model relates to a boiler technical field especially relates to a vacuum hot water boiler waste heat utilization equipment.

Background

In the using process of the boiler, the heat generated by the waste gas generated by combustion and the heat of the discharged steam have certain availability, and with the progress of science and technology, the requirements of people on energy recycling are higher and higher;

during traditional boiler waste heat utilization, mainly retrieve through burning exhaust flue gas heat, the flue gas is very fast through speed, and heat utilization efficiency is lower, and has the structure complicacy, the problem that the recycle is with high costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a waste heat utilization device of a vacuum hot water boiler.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a vacuum hot water boiler waste heat utilization equipment, includes the shell, both ends and the position that is close to side are fixed with steam respectively about the shell and advance pipe and flue gas calandria, install the water storage box in the shell, steam advances to manage and is located the water storage box and installs the heat conduction return bend, and the water storage box is worn out to the heat conduction return bend, the lower extreme middle part of water storage box is provided with cylindrical cavity, be fixed with a plurality of heat transfer pieces on cylindrical cavity's the inside wall, be fixed with a plurality of convex heat conduction strips on cylindrical cavity's the interior roof, be fixed with the moisturizing pipe on the water storage box.

Preferably, a smoke outlet vertical to the smoke exhaust pipe is fixed on the smoke exhaust pipe, and the smoke outlet is positioned at the lower end of the cylindrical cavity.

Preferably, a plurality of support legs are fixed between the reservoir and the inner bottom wall of the outer shell.

Preferably, the outer wall of the water storage tank is fixed with a plurality of heat conducting fins, and the inner wall of one end of the water storage tank, which is opposite to the heat conducting fins, is circumferentially distributed with a plurality of heating fins.

Preferably, a smoke exhaust pipe is fixed at one end of the shell, which is opposite to the steam inlet pipe.

Preferably, an induced draft fan is installed at one end of the flue gas calandria.

Compared with the prior art, the utility model has the following benefits:

1. the utility model improves the recovery surface by double recovery of hot steam and flue gas heat, and the cylindrical cavity is arranged through the water storage tank, so that the flue gas residence time is longer when the flue gas is discharged, and the heat conduction and collection are more convenient by matching with the heat transfer sheet and the arc-shaped heat conduction strip, thereby leading the heat recovery utilization rate to be higher;

2. the flue gas rises along the water storage box inner wall again after entering into cylindrical cavity for the outer wall of whole water storage box can all receive the flue gas high temperature, cooperates the conducting strip simultaneously, makes heat transfer efficiency higher, cooperates the dual heating of heat conduction return bend, makes the heat utilization more high-efficient.

Drawings

FIG. 1 is a structural view of a waste heat utilization apparatus for a vacuum hot water boiler according to the present invention;

fig. 2 is a top view of the heat-conducting fin of the waste heat utilization device of the vacuum hot water boiler of the present invention.

In the figure: the device comprises a shell 1, a steam inlet pipe 2, a water replenishing pipe 3, a smoke exhaust pipe 4, a water storage tank 5, heat conducting fins 6, a heat conducting bent pipe 7, heat conducting fins 8, a smoke outlet 9, heating fins 10, a smoke exhaust pipe 11, supporting legs 12 and a cylindrical cavity 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

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, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a waste heat utilization device of a vacuum hot water boiler comprises a shell 1, a steam inlet pipe 2 and a flue gas exhaust pipe 11 are respectively fixed at the upper end and the lower end of the shell 1 and close to the side, a water storage tank 5 is installed in the shell 1, a heat conduction bent pipe 7 is installed in the water storage tank 5 of the steam inlet pipe 2, the heat conduction bent pipe 7 penetrates out of the water storage tank 5, a cylindrical cavity 13 is arranged in the middle of the lower end of the water storage tank 5, a plurality of heat transfer sheets 8 are fixed on the inner side wall of the cylindrical cavity 13, a plurality of arc-shaped heat transfer strips are fixed on the inner top wall of the cylindrical cavity 13, a water supplementing pipe 3 is fixed on the water storage tank 5, the cylindrical cavity 13 is arranged in the water storage tank 5, when flue gas is exhausted, the residence time of the flue gas is longer, heat transfer and collection are more convenient by matching the heat transfer sheets 8 and the arc-shaped heat transfer strips, so that the heat recovery rate is higher, and the heat of the hot steam and the flue gas is recovered by double recovery, the heating speed of the water storage tank 5 is increased, so that the heat utilization is more efficient.

Furthermore, a smoke outlet 9 perpendicular to the smoke exhaust pipe 11 is fixed on the smoke exhaust pipe 11, and the smoke outlet 9 is positioned at the lower end of the cylindrical cavity 13. A plurality of support legs 12 are fixed between the reservoir 5 and the inner bottom wall of the housing 1. A plurality of heat conducting fins 6 are fixed on the outer wall of the water storage tank 5, a plurality of heating fins 10 are circumferentially distributed on the inner wall of one end, opposite to the heat conducting fins 8, of the water storage tank 5, and the heating efficiency of hot water in the water storage tank 5 is improved through the heating fins 10. A smoke exhaust pipe 4 is fixed at one end of the shell 1 opposite to the steam inlet pipe 2. And an induced draft fan is installed at one end of the flue gas calandria 11, and negative pressure is generated by the induced draft fan to extract hot flue gas in a hearth on the boiler.

When the boiler is used, the steam inlet pipe 2 is connected to the top end in the boiler, so that steam boiled by hot water can be conveyed through the steam inlet pipe 2, the steam inlet pipe 2 transfers the hot steam into the heat-conducting bent pipe 7, the heat-conducting bent pipe 7 heats water in the water storage tank 5, the flue gas exhaust pipe 11 is used for connecting a smoke exhaust port burnt by the boiler, a draught fan generates negative pressure to suck heat and flue gas into the flue gas exhaust pipe 11, the flue gas enters the cylindrical cavity 13 of the water storage tank 5 when being discharged from the smoke outlet 9, so that the flue gas can stay for a longer time, the bottom of the water storage tank 5 can be heated, the heat collection capacity can be better achieved by matching with the arc-shaped heat conduction strips and the heat conduction sheets 8, then the flue gas rises along the bottom of the water storage tank 5, the whole side wall of the water storage tank 5 can be heated, meanwhile, the heat transfer efficiency is improved by matching with the heat conduction sheets 6, so that the heat of the flue gas can be more fully utilized, and simple structure avoids the return water and utilizes the problem with high costs, and the water in the water storage box 5 can be used for the supply of boiler internal water or other water uses department after heating.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a vacuum hot water boiler waste heat utilization equipment, includes shell (1), its characterized in that, both ends and the position that is close to side are fixed with steam respectively about shell (1) and advance pipe (2) and flue gas calandria (11), install water storage box (5) in shell (1), steam advances pipe (2) and is located water storage box (5) and installs heat conduction return bend (7), and heat conduction return bend (7) wear out water storage box (5), the lower extreme middle part of water storage box (5) is provided with cylindrical cavity (13), be fixed with a plurality of heat transfer pieces (8) on the inside wall of cylindrical cavity (13), be fixed with a plurality of convex heat conduction strips on the interior roof of cylindrical cavity (13), be fixed with moisturizing pipe (3) on water storage box (5).

2. A waste heat utilizing device of a vacuum hot water boiler according to claim 1, wherein a smoke outlet (9) is fixed on the smoke exhaust pipe (11) and is perpendicular to the smoke exhaust pipe, and the smoke outlet (9) is located at the lower end of the cylindrical cavity (13).

3. A vacuum hot water boiler waste heat utilizing device according to claim 1, wherein a plurality of supporting legs (12) are fixed between the water reservoir (5) and the inner bottom wall of the outer casing (1).

4. The waste heat utilization device of the vacuum hot water boiler according to claim 1, wherein a plurality of heat conducting fins (6) are fixed on the outer wall of the water storage tank (5), and a plurality of heating fins (10) are circumferentially distributed on the inner wall of one end of the water storage tank (5) opposite to the heat conducting fins (8).

5. The waste heat utilization device of the vacuum hot water boiler according to claim 1, wherein a smoke discharge pipe (4) is fixed to one end of the housing (1) opposite to the steam inlet pipe (2).

6. The waste heat utilization device of a vacuum hot water boiler according to claim 1, wherein an induced draft fan is installed at one end of the flue gas exhaust pipe (11).