CN203116072U

CN203116072U - Water jacket boiler air supply device

Info

Publication number: CN203116072U
Application number: CN 201320102102
Authority: CN
Inventors: 李刚; 李子琦
Original assignee: JILIN HENGXIN BOILER CO Ltd
Current assignee: JILIN HENGXIN BOILER CO Ltd
Priority date: 2013-03-06
Filing date: 2013-03-06
Publication date: 2013-08-07
Anticipated expiration: 2023-03-06

Abstract

A water jacket boiler air supply device comprises a boiler body, a water jacket on the boiler body, a boiler grate inside the boiler body and a combustion chamber below the boiler grate. The boiler grate is composed of a plurality of water pipes, two ends of each water pipe are communicated with the water jacket on the boiler body, air supply pipes are arranged inside the water pipes, air outlets of the air supply pipes are communicated with the combustion chamber below the boiler grate, and the air inlets of the air supply pipes are communicated outside the boiler body. A water jacket boiler provided with the air supply device does not emit black smoke when operated or materials are added, effects are remarkable, and the problems that due to a combustion chamber of the water jacket boiler lacks of oxygen, combustion of volatile matters is not thorough, temperature rising is slow, energy is wasted, the environment is polluted, heating efficiency is low, and cost is high.

Description

A kind of water jacket boiler air-supply arrangement

Technical field

The utility model relates to a kind of water jacket boiler air-supply arrangement, belongs to field of boilers.

Background technology

Existing coal-fired water jacket boiler is of a great variety, these water jacket boiler ubiquity high pollutions, high energy consumption, the problem that the thermal efficiency is low, basic reason is that fuel combustion is incomplete, the fuel of its incomplete combustion mainly is to lack oxygen and the fugitive constituent that can't burn in the combustion chamber internal cause, for fugitive constituent is fully burnt, some water jacket boilers adopt increases the precombustion chamber blower power, thereby increase the air capacity that enters boiler, but this way has been accelerated pre-burning speed, and the volatile matter of Zeng Jiaing still can not completing combustion because lacking oxygen thereupon; Adopt ventilation duct to pick the water jacket boiler of wind to the furnace flame central straight in addition, but the ajutage of this boiler is very easily aging distortion at high temperature, this problem can't solve, need frequent blowing out maintenance and repair to change ajutage, cause inconvenience to the user, if directly blow in that the combustion chamber furnace flame is peripheral, just air enters and can't penetrate flame behind the combustion chamber and enter combustion centre and together discharge out of the furnace with flue gas, can't carry out effectively combustion-supporting to the fugitive constituent in the stove; Also have some large-scale water jacket boilers to adopt toward the interior method of replenishing purity oxygen of stove, fugitive constituent is carried out combustion-supporting, but need build oxygen station, cost is very high, and need to be equipped with the professional oxygen station is operated, monitors and safeguards, middle and small burn coal boiler can't be born the coal-fired cost of great number like this; Up to now, people also in exploratory development can make the water jacket boiler fuel chambers fugitive constituent burning fully, and long service life, air-supply arrangement that cost is low.

Summary of the invention

The purpose of this utility model provides a kind of water jacket boiler air-supply arrangement, can make fuel combustion complete, and long service life, cost are low.

The technical solution of the utility model is: a kind of water jacket boiler air-supply arrangement, comprise the fire grate in water jacket on body of heater, the body of heater, the body of heater, the combustion chamber of fire grate below, it is characterized in that: fire grate is made of some water pipes, the two ends of water pipe are communicated with water jacket on the body of heater, in each water pipe ajutage is housed, the air outlet of ajutage is communicated with the air inlet of ajutage and body of heater external communications with the combustion chamber of fire grate below.

The utility model has the advantages that ajutage is installed in the water pipe that constitutes fire grate, the two ends of water pipe are communicated with water jacket on the body of heater, water in the water jacket flows through and can cool off ajutage timely and effectively through water pipe, thereby has protected ajutage can not be out of shape because of high temperature ageing; The air outlet of ajutage is communicated with the combustion chamber of fire grate below; the air inlet of ajutage and body of heater external communications; can be drawn in the combustion chamber by the air that stove is outer of the negative pressure in the stove; because the air outlet of ajutage is evenly distributed on the fire grate below that water pipe constitutes; the fugitive constituent that can make the combustion chamber internal cause lack oxygen and can't burn fully burns; its high efficiency, cost are low, save the energy, can also protect environment simultaneously.

Description of drawings

Fig. 1 is the structural representation of a kind of water jacket boiler air-supply arrangement of the utility model;

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the air inlet position view of the ajutage of a kind of water jacket boiler air-supply arrangement of the utility model.

The air outlet of the air inlet of 1 water pipe, 2 water jackets, 3 ajutages, 4 precombustion chambers, 5 ajutages, 6 ajutages, 7 combustion chambers, 8 bodies of heater among the figure.

The specific embodiment

A kind of water jacket boiler air-supply arrangement, comprise the fire grate in water jacket 2 on body of heater 8, the body of heater, the body of heater, the combustion chamber 7 of fire grate below, fire grate is made of some water pipes 1, the two ends of water pipe are communicated with water jacket on the body of heater, ajutage 3 is housed in each water pipe, the air outlet 6 of ajutage is communicated with the combustion chamber of fire grate below, air inlet 5 and the body of heater external communications of ajutage.

Ajutage is contained in the middle of the water pipe, and the two ends of water pipe are communicated with water jacket on the body of heater, and ajutage outer wall and pipe inner wall form the flowing water passage, and water pipe fire grate and ajutage can obtain cooling simultaneously, makes the aging distortion of ajutage; Be contained in the air outlet of the ajutage in the water pipe Open Side Down and pass the water pipe that constitutes fire grate and be communicated with combustion chamber below the fire grate, can avoid impurity in ajutage, to pile up like this and ajutage is stopped up, when the fire grate of some water pipes formations is a plane, the air outlet of ajutage can be arranged on this plane uniformly, can make air-supply evenly, make the fugitive constituent burning in the combustion chamber thorough; Downward and the combustion chamber connection with the ajutage air outlet, air outlet can not stop up like this, keeps unimpeded.

Water jacket boiler is with coal by the feeding fire door on the body of heater, charcoal or other combustible fuel are delivered in the precombustion chamber 4, the fire door air blast also is housed on the precombustion chamber fire door, the air outlet of fire door air blast passes the feeding fire door and is communicated with precombustion chamber, the effect that the fire door air blast is set is to deliver in the body of heater after the air that stove is outer compresses, make the flame of fuel through the burning downwards in the combustion chamber of the gap between the water pipe of fire grate, the combustion chamber is communicated with heat-exchanger rig, flue gas hot in the combustion chamber enters heat-exchanger rig, with the heating of the water in the water jacket in the heat-exchanger rig, supply with the unit that needs.

Air blast is sent wind into precombustion chamber, the flue gas of fuel combustion enters heat-exchanger rig through the combustion chamber, flue gas after the heat exchange, namely Leng Que flue gas discharges out of the furnace, and can form negative pressure like this in the combustion chamber, utilize the negative pressure that forms from ajutage the air outside the stove to be sucked the combustion chamber, it is abundant that not clean-burning fugitive constituent in the combustion chamber is obtained combustion-supporting oxygen combustion, where necessary, can add a cover fan housing at the air outlet of each ajutage, air blast is installed at two ends at fan housing, increases blast pressure.

In actual use, but visual observations to the fugitive constituent that enters the combustion chamber through precombustion chamber in the violent burning in the air outlet place of ajutage, the fugitive constituent burning fully, the residue that forms in the bottom, combustion chamber no longer is being mingled with of bulk, but linen powder, illustrate that fuel combustion is abundant, the utility model is through using proof, and no matter water jacket boiler is when operation or equal over-emitting black exhaust not when adding material, and effect is remarkable, solved the fugitive constituent incomplete combustion that the water jacket boiler combustion chamber causes because of anoxic fully, it is slow to heat up, and wastes energy contaminated environment, the thermal efficiency is low, problems such as cost height.

Claims

1. water jacket boiler air-supply arrangement, comprise the fire grate in water jacket on body of heater, the body of heater, the body of heater, the combustion chamber of fire grate below, it is characterized in that: fire grate is made of some water pipes, the two ends of water pipe are communicated with water jacket on the body of heater, in each water pipe ajutage is housed, the air outlet of ajutage is communicated with the air inlet of ajutage and body of heater external communications with the combustion chamber of fire grate below.