CN203364118U - Reverse burning type energy-saving primary-secondary boiler - Google Patents

Abstract

The utility model relates to an unpressurized reverse burning type energy-saving primary-secondary boiler which comprises a boiler body, heating pipes, a flue and combustion chambers. The boiler body is composed of a primary boiler body and a secondary boiler body, the primary boiler body comprises a sealed primary boiler sleeve formed by connecting a primary boiler outer sleeve with a primary boiler inner sleeve, the secondary boiler body comprises a sealed secondary boiler sleeve formed by connecting a secondary boiler outer sleeve with a secondary boiler inner sleeve, and the primary boiler sleeve is communicated with the secondary boiler sleeve through a communicating pipe. The combustion chamber of the primary boiler body and the combustion chamber of the secondary boiler body are communicated through the foldback type flue at the top of the primary boiler body and the top of the secondary boiler body, a plurality of heating pipes are respectively arranged in a heating chamber of the primary boiler body and a heating chamber of the secondary boiler body, every heating pipe is communicated with the boiler sleeves of the boiler body, a combustion chamber is arranged below the primary boiler body, a flue outlet is arranged below the secondary boiler body, and the secondary boiler body and the primary boiler body are respectively provided with a water inlet and a water outlet which are communicated with the boiler sleeves. The unpressurized reverse burning type energy-saving primary-secondary boiler is scientific in structural design and reasonable in layout; compared with an existing boiler, the energy-saving efficiency is improved by 10-30%, and pollutant discharge is reduced by 60%.

Description

Anti-burning energy-saving composite furnace

technical field

The utility model relates to a combustion heating furnace, in particular to a non-pressure-bearing back-firing energy-saving master furnace, which is especially suitable for substituting for inconvenient central heating or for small and medium-sized regional collective use.

Background technique

The main structure of the current heating furnace (including boiler) consists of furnace body, heating pipe, flue and combustion chamber, and usually adopts high temperature and high pressure operation mode. Focusing on improving the efficiency of heating furnaces and the requirements of energy saving and environmental protection, people have carried out many researches and applications on boilers or small and medium-sized heating furnaces, especially. For example: increase the number of heating tubes in the furnace body and use high-efficiency heat conduction tubes, add insulation measures outside the furnace body, increase dust removal devices, control combustion devices, etc. These technical measures have played a positive role in varying degrees in improving energy efficiency, energy saving, and environmental protection of traditional boilers (heating furnaces). However, these technical measures have failed to effectively utilize the waste heat in the flue, and the arrangement of the heating tubes in the heating chamber is not reasonable, so that the combustion efficiency needs to be improved, and the energy saving and environmental protection also need to be further improved. In addition, the heating furnace operating under high pressure has certain safety risks, and the operation and maintenance costs are also high.

Contents of the invention

The purpose of the utility model is to solve the problems existing in the prior art, and to improve a back-firing energy-saving master furnace which efficiently utilizes the waste heat of the flue and does not operate under pressure.

The technical scheme of the utility model is:

A counter-burning energy-saving master-composite furnace, comprising a furnace body, a heating pipe, a flue, and a combustion chamber. Among them: the furnace body is composed of a main furnace body and a sub-furnace body. The main furnace body includes a closed main furnace cover formed by connecting the outer cover of the main furnace and the inner cover of the main furnace. The closed sub-furnace cover formed in the end is communicated with the furnace cover of the sub-body and the mother furnace body through a connecting pipe. The top of the main furnace body and the sub-furnace body connect the combustion chambers of the two through a fold-back flue, and many heating pipes are respectively arranged in the heating chamber of the sub-furnace body and the main furnace body, and each heating pipe is connected with the furnace jacket of the furnace body where it is located. , the combustion chamber is arranged under the main furnace body, the flue outlet is arranged under the sub-furnace body, and the sub-furnace body and the main furnace body are respectively provided with water inlets and outlets connected with the furnace cover.

The arrangement of the heating tubes in the furnace body includes: horizontal arrangement, inclined arrangement, or a combination of horizontal arrangement and inclined arrangement, and the longitudinal arrangement of the heating tubes in the furnace body adopts an alternate dislocation arrangement.

The above programs further include:

The fold-back flue on the top of the sub-boiler and the main body is a U-shaped flue, and the outside of the U-shaped flue is closed by a water supply tank.

A water level gauge is provided on the water supply tank, and the sub-furnace body and the main furnace body are integrally connected through a connecting plate, and a dust collector is also provided at the flue outlet at the bottom of the sub-furnace body.

The outer walls of the sub-furnace body and the water supply tank are all provided with an insulating layer, and a blower is arranged in the combustion chamber of the main furnace body or an induced draft fan is arranged at the flue outlet of the sub-furnace body.

In the above scheme, the combined structure of the mother and child furnace body is adopted, the mother furnace body is used as the combustion furnace body, and the sub furnace body is used as the flue waste heat recovery furnace body, which solves the problem of low utilization rate of flue waste heat in the prior art; the furnace body The scientific arrangement of the heating pipes improves the efficient utilization of heat energy; the recirculating flue at the top cooperates with the water tank, which not only recovers waste heat, but also meets the requirements of non-pressure operation and overcomes the safety hazard of high-pressure operation; after the use of the dust collector , to minimize emissions and make emissions more environmentally friendly.

The utility model has a scientific structure design and a more reasonable layout. Compared with the existing boiler, the energy-saving efficiency is improved by 10-30%, and the discharge of pollutants is reduced by as much as 60%.

Description of drawings

Accompanying drawing 1 is the sectional structure diagram of a kind of embodiment of the utility model.

In the figure: 1 is the water supply tank, 2 is the connecting plate, 3 is the water inlet, 4 is the water supply port, 5 is the outer shell of the sub-furnace, 6 is the heating tube arranged horizontally in the sub-furnace body, 7 is the inner sleeve of the sub-furnace, 8 is the sub-furnace The heating pipes arranged obliquely in the furnace body, 9 is the sub-furnace jacket, 10 is the lower cavity of the sub-furnace body (dust collector can be installed), 11 is the flue outlet (can be equipped with an induced draft fan), 12 is the connecting pipe of the sub-boiler jacket, 13 14 is the water outlet, 15 is the inner sleeve of the main furnace, 16 is the heating tube arranged obliquely in the main furnace body, 17 is the heating tube arranged horizontally in the main furnace body, 18 is the main furnace cover, 19 is the catalog combustion chamber, 20 is the outer shell of the mother furnace, 21 is the feeding port of the combustion chamber (which can be equipped with a blower), and 22 is a U-shaped flue.

Detailed ways

Further description will be made below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A counter-burning energy-saving master-composite furnace, comprising a furnace body, a heating pipe, a flue, and a combustion chamber. Wherein: the furnace body is composed of a mother furnace body and a sub-furnace body, the mother furnace body includes a closed mother furnace cover formed by welding the outer cover 20 of the main furnace and the inner cover 15 of the main furnace, and the sub-furnace body includes the outer cover 5 of the sub-furnace and the inner cover 15 of the main furnace. The upper and lower closed sub-furnace covers formed after the furnace inner cover 7 is welded, are communicated by connecting pipes 12 between the sub-furnace covers of the sub-body and the mother body of furnace. The top of the main furnace body and the sub-furnace body connect the combustion chambers of the two through the U-shaped flue 22, and many heating pipes (6, 8, 16, 17) are respectively arranged in the heating chambers of the sub-furnace body and the sub-furnace body. The pipes are all communicated with the furnace jacket of the furnace body where the combustion chamber 19 is located under the mother furnace body, and the flue outlet 11 is arranged under the sub furnace body. , Water outlet 3, 14.

Example 2

On the basis of Example 1, the arrangement of the heating tubes (6, 8, 16, 17) in the furnace body adopts a combination of horizontal arrangement and inclined arrangement (shown in 6, 8, 16, 17 in the figure ), or a single way of horizontal arrangement (shown in Figure 6 and 17) or oblique arrangement (shown in Figure 8 and 16), the longitudinal arrangement of heating tubes in the furnace body is arranged in an alternate dislocation manner, that is, the upper The tubes correspond to the gaps between the tubes below. The outside of the U-shaped flue 22 is closed by the water replenishment tank 1, and the bottom of the water replenishment tank 1 is provided with a water replenishment port 4 that communicates with the sub and master furnace casings. A water level gauge 13 is provided on the water supply tank 1, and the sub-body and the main furnace body are integrally connected by two upper and lower connecting plates 2, and a dust collector is also provided in the cavity 10 at the flue outlet 11 at the bottom of the sub-furnace body.

Example 3

On the basis of embodiment 2, an insulation layer is provided on the outer wall of the child, the mother furnace body and the water supply tank 1, and for a larger-capacity heating furnace, a blower is set in the combustion chamber of the mother furnace body or in the child furnace body An induced draft fan is installed at the flue outlet.

Its working principle is: the heat generated by combustion in the combustion chamber first heats the heating tube and the furnace jacket of the main furnace body, heats the water in the furnace jacket, and the waste heat enters the sub-furnace body through the U-shaped flue. The sleeve absorbs waste heat again to heat the water in the furnace sleeve. Since the two furnace sleeves, the water supply tank and the heating pipe are all connected, all the heat in the entire furnace body can be absorbed to the maximum extent, and finally the reserved flue gas passes through the flue gas. Exit out. the

Claims (5)

1. a reverse burning type energy-saving composite stove, comprise body of heater, heating tube, flue, combustion chamber, it is characterized in that: body of heater is comprised of a female body of heater and a sub-body of heater, female body of heater comprises after being connected with female stove inner sleeve by female stove overcoat the sealing mother boiler clothing formed, sub-body of heater comprises after being connected with sub-stove inner sleeve by sub-stove overcoat the boiler clothing of sealing formed, son, between the boiler clothing of female body of heater by being communicated with communicating pipe, female body of heater and sub-body of heater top are communicated with the combustion chamber of the two by the Zigzag type flue, many heating tubes are arranged in respectively son, in the heating clamber of female body of heater, every heating tube all is communicated with the boiler clothing of place body of heater, combustion chamber is located at the below of female body of heater, flue outlet is located at the below of sub-body of heater, at son, be respectively equipped with advancing of being communicated with boiler clothing on female body of heater, delivery port.

2. reverse burning type energy-saving composite stove according to claim 1, it is characterized in that the arrangement mode of described heating tube in body of heater comprises: level is arranged, is tilted to arrange or level is arranged with tilt to arrange and combine a kind of, heating tube is vertically arranged and is adopted alternately dislocation mode to arrange in body of heater.

3. reverse burning type energy-saving composite stove according to claim 1 and 2, it is characterized in that: the Zigzag type flue at sub, female body of heater top is U-shaped flue, and U-shaped flue outside is sealed by water supply tank, and the water supply tank bottom is provided with the water supplement port connected with son, female boiler clothing.

4. reverse burning type energy-saving composite stove according to claim 3, is characterized in that: be provided with water-level gauge on water supply tank, between sub, female body of heater, by the connecting plate integrated connection, at the flue outlet place of sub-bottom of furnace body, also be provided with deduster.

5. reverse burning type energy-saving composite stove according to claim 4 is characterized in that: the outer wall at son, female body of heater and water supply tank is equipped with heat-insulation layer, air blast is set in the combustion chamber of female body of heater or at the flue outlet of sub-body of heater, air-introduced machine is set.

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