CN2783134Y

CN2783134Y - Energy saving device for steam boiler

Info

Publication number: CN2783134Y
Application number: CN 200520081017
Authority: CN
Inventors: 李丙成
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-02
Filing date: 2005-02-02
Publication date: 2006-05-24
Anticipated expiration: 2015-02-02

Abstract

The utility model relates to an energy saving device for a steam boiler, which belongs to the technical field of the boiler. The utility model comprises a smoke channel, wherein the periphery of the smoke channel is provided with a water chamber, the wall of the water chamber is provided with a water inlet and a water outlet, and more than one heat absorption pipe is arranged in the smoke channel. The utility model is characterized in that the heat absorption pipes are arranged in a layer shape along the direction of the smoke channel; both ends of each absorption pipe are respectively pass through the wall of the smoke wall, and then are communicated with the water chamber. The utility model can be directly arranged between the upper part of the boiler body of the existing of the steam boiler and the lower part of a chimney. Because the heat absorption pipes are arranged in the layer shape along the direction of the smoke channel, smoke gas is in quasi flow winding the heat absorption pipes in the smoke channel, and the contact time of the smoke gas and the heat absorption pipes is extended. Thus, the heat energy in the smoke channel can be sufficiently and effectively utilized, and the heat efficiency of the boiler is raised.

Description

The steam boiler energy-saving device

Technical field

The utility model belongs to the boiler technology field, particularly relates to a kind of steam boiler energy-saving device.

Background technology

The steam boiler of prior art generally exists the low problem of the thermal efficiency.Owing to the low excessively thermal efficiency causes the increase of boiler combustion with coal, caused the waste of the energy.Under current energy-intensive social situations, the heat energy that certainly will require to maximally utilise coal combustion to the greatest extent and produced.The approach that improves boiler thermal output generally has following three kinds: (1) improves the burning of coal rate; (2) adopt good insulation measure, guarantee that the heat energy in the boiler does not does not outwards scatter and disappear; (3) make full use of the interior heat energy of boiler flue, it can be absorbed again.For preceding two kinds of approach, existing a lot of useful technological transformations are no longer set forth at this in the prior art.For the heat energy this point in making full use of boiler flue, domestic never excellent measure.The patent No. be 93222444.X Chinese practical new patent disclosure a kind of utilize flue residue heat with saturated vapor change into superheated steam technical scheme, this technical scheme is for being provided with the Steam Heating case outside flue, vertical superheater tube is set in flue, the Steam Heating case communicates with superheater tube, the Steam Heating case is provided with import and export, saturated vapor is entered by the heating cabinet import, behind heating cabinet and superheater tube, spray by the heating cabinet outlet, because the effect of flue residue heat, saturated vapor becomes superheated steam.The shortcoming of this technical scheme is that superheater tube is vertical placement, and flue gas flows in flue straight up, causes lack and the inadequate phenomenon of generation heat exchange the time of contact of flue gas and superheater tube, and a large amount of flue residue heats is scattered and disappeared, and causes waste.

The utility model content

For addressing the above problem, the utility model provides a kind of steam boiler energy-saving device, can fully absorb the waste heat in the flue, improves the use thermal efficiency of boiler greatly.

The technical scheme that its technical problem that solves the utility model adopts is: design a kind of steam boiler energy-saving device, comprise flue, one hydroecium is set around flue, offer water inlet, delivery port on the hydroecium wall, endothermic tube more than one is set in the flue, it is characterized in that endothermic tube is layered arrangement along the flue direction, the two ends of each endothermic tube are connected with hydroecium after passing walling of flue respectively.

For making flue gas curved flowing in flue, be staggered between the endothermic tube of the utility model layered arrangement and be provided with to prolong heat exchanger time.

Hydroecium of the present utility model adopts annular water chamber.After using a period of time, the bottom of hydroecium can stockpile a large amount of incrustation scales, for removing incrustation scale and impurity, offers sewage draining exit in the bottom of hydroecium.

The beneficial effect that the utility model had is:

1. owing in flue, be provided with the endothermic tube that is connected with hydroecium, can effectively utilize the heat energy in the flue, improve the thermal efficiency of boiler.

2. because two adjacent endothermic tubes are staggered setting in the space, hot gas curved shape in flue flows in the flue, has prolonged the time of contact of hot gas and endothermic tube, has more fully effectively utilized the heat energy in the flue.

3. the utility model is simple in structure, and it is convenient to use, and can be directly installed between the upper of furnace body and chimney bottom of existing steam boiler.

Description of drawings

Fig. 1 is the structural representation of first embodiment of the utility model;

Fig. 2 is the cutaway view along middle B-B line embodiment illustrated in fig. 1;

Fig. 3 is the cutaway view along middle A-A line embodiment illustrated in fig. 1;

Fig. 4 is the structural representation of another embodiment of the utility model;

Fig. 5 is the structural representation of the 3rd embodiment of the utility model;

Among the figure: 1. water inlet, 2. flue, 3. endothermic tube, 4. endothermic tube, 5. delivery port, 6. sewage draining exit, 7. annular water chamber, 8. flange, 9. flange.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

Embodiment one

As shown in Figure 1, around flue 2 annular water chamber 7 is set, the staggered

endothermic tube

3,4 of some one-tenth an angle of 90 degrees is set in the flue, endothermic tube communicates with annular water chamber 7, is provided with water inlet 1 in annular water chamber 7, delivery port 5, sewage draining exit 6.

Water enters annular water chamber 7 by water inlet 1, because of annular water chamber 7 all communicates with

endothermic tube

3,4, water also enters endothermic tube, the staggered endothermic tube in space runs into the flue gas of operation from the bottom to top in flue 2, through the conduction heating of the higher fume afterheat of temperature, cold water has become the higher hot water of temperature and has been flowed out by delivery port 5.Be crisscross arranged owing to be the space between adjacent two

endothermic tubes

3,4, hot gas each endothermic tube of pile warp and curved flowing flue 2 in have prolonged time of contact of hot gas and endothermic tube, the abundant more interior heat energy of flue that effectively utilized.Angle between two

endothermic tubes

3,4 can be set according to actual conditions.Delivery port 5 can connect heat storage tank, provides convenience for people use hot water.Also can link, improve the temperature of the feed water system of boiler by the water supply system of pump and check valve and boiler.For preventing that hydroecium from stockpiling a large amount of incrustation scales and impurity, but periodic cleaning hydroecium is also discharged incrustation scale and impurity from sewage draining exit 6.

This device can be directly installed between existing steam boiler and the chimney.The lower end of this device is linked by flange 9 and steam boiler top, and the upper end of this device links by flange 8 and boiler chimney.

Embodiment two

As shown in Figure 4, endothermic tube of the present utility model can also be parallel laminar from top to bottom to be placed, and puts one or more for every layer.In this kind design, flue gas flowing in flue 2 also is that the curve rising is flowed.

Embodiment three

For obtaining the technique effect that flue gas rises and flows at flue 2 inner curves, as shown in Figure 5, the endothermic tube in the flue 2 also can be the irregularities layered arrangement along the flue direction.In this kind design, flue gas flowing in flue 2 also flowed for curve rises.This scheme falls within the protection domain of this patent equally.

Claims

1. steam boiler energy-saving device, comprise flue, one hydroecium is set around flue, offer water inlet, delivery port on the hydroecium wall, endothermic tube more than one is set in the flue, it is characterized in that endothermic tube is layered arrangement along the flue direction, the two ends of each endothermic tube are connected with hydroecium after passing walling of flue respectively.

2. steam boiler energy-saving device according to claim 1 is characterized in that being between the endothermic tube of layered arrangement staggered the setting.

3. steam boiler energy-saving device according to claim 1 and 2 is characterized in that hydroecium adopts annular water chamber.

4. steam boiler energy-saving device according to claim 1 and 2 is characterized in that sewage draining exit is offered in the bottom of hydroecium.