阅读说明：本技术 生物质锅炉的新型管式预热器及预热方法 (Novel tubular preheater of biomass boiler and preheating method ) 是由 徐琳 于 2019-11-26 设计创作，主要内容包括：本发明涉及一种生物质锅炉的新型管式预热器及预热方法。由于市场竞争的日益激烈,锅炉布置形式日益完善,原有的管箱设备无法实现烟气由下至上流动的换热方式。本发明的组成包括：管箱,所述的管箱包括立柱结构(3),所述的立柱结构是四周由4个立柱焊接而成的方形结构体,所述的立柱结构内部固定有管板(6),所述的管板孔内穿有中间管束(1)并将中间管束焊接在4个立柱上,所述的中间管束呈四方形布置,所述的管板之间安装有一组连接护板(2),所述的连接板平行布置,所述的管板和立柱通过滑动垫板(4)安装在钢结构上,侧护板(7)分为左、右护板,分别焊接在所述的管板与所述的立柱上。本发明用于生物质锅炉的新型管式预热器。(The invention relates to a novel tubular preheater of a biomass boiler and a preheating method. Because market competition is increasingly violent, boiler arrangement forms are increasingly perfect, and the heat exchange mode that flue gas flows from bottom to top cannot be realized to original pipe box equipment. The invention comprises the following components: channel case, channel case include stand structure (3), the stand structure be the square structure body that forms by 4 stand welding all around, stand structure inside be fixed with tube sheet (6), the downthehole middle tube bank (1) of wearing of tube sheet and with middle tube bank welding on 4 stands, middle tube bank be the square and arrange, the tube sheet between install a set of connection backplate (2), connecting plate parallel arrangement, tube sheet and stand pass through sliding backing plate (4) and install on the steel construction, side guard plate (7) divide into left and right backplate, weld respectively the tube sheet with the stand on. The invention relates to a novel tubular preheater for a biomass boiler.)

1. A novel tubular preheater of a biomass boiler comprises: the pipe box is characterized in that: the tube case include the stand structure, the stand structure be the square structure body that forms by 4 stand welding all around, stand structure inside be fixed with the tube sheet, the tube sheet downthehole middle tube bank of wearing and with middle tube bank welding on 4 stands, middle tube bank be the square and arrange, the tube sheet between install a set of connection backplate, connecting plate parallel arrangement, tube sheet and stand pass through the slip backing plate and install on the steel construction, the side guard board divide into left and right backplate, weld respectively the tube sheet with the stand on.

2. The new tubular preheater of biomass boiler as claimed in claim 1, characterized by: the side face of the upright post structure is welded with the air duct communicating box, a flue gas inlet is formed in the bottom of the pipe box and between the steel structure beams, a flue gas outlet is formed in the top of the pipe box, a cold air inlet is formed in the side face of the pipe box above the connecting protection plate, and a hot air outlet is formed in the lower portion of the pipe box.

3. The preheating method of the novel tubular preheater of the biomass boiler according to one of the claims 1 or 2, characterized in that: the method comprises the following steps:

the tube box is composed of seven parts, namely a tube plate, a middle tube bundle, a side protection plate, an air duct communicating box, a stand column structure, a connecting protection plate between the tube plates and a lower sliding base plate;

hot flue gas enters from a flue gas inlet, flows from bottom to top and flows among the pipes, and air flows in a snake-shaped horizontal manner inside the pipes; the middle tube bundle, the left and right guard plates and the air duct communicating box are welded on the tube plate and the four upright posts, the tube plate and the upright posts act on a steel structure through a sliding base plate, the sliding base plate is composed of two steel plates, the upper and lower surfaces of the two steel plates are attached and can slide, and the sliding base plate can absorb thermal expansion;

the tube plates of all the tube boxes are subjected to groove butt welding on site, so that the multi-stage tube boxes form a whole with good rigidity, the tube boxes are in rigid connection, the generated thermal expansion is absorbed by the sliding base plate below the tube boxes, the heat exchange function of the boiler is realized under the condition of specific smoke flow direction, and the arrangement form of the whole boiler is perfected.

The technical field is as follows:

the invention relates to a novel tubular preheater of a biomass boiler and a preheating method.

Background art:

because market competition is increasingly violent, boiler arrangement forms are increasingly perfect, and the heat exchange mode that flue gas flows from bottom to top cannot be realized to original pipe box equipment. In order to respond to the national policy of energy conservation and emission reduction, how to efficiently utilize biomass combustion to generate electricity is the direction of fighting the whole power industry, and biomass boiler products are in line with the development needs of the domestic power market and have great significance in responding to the national policy.

The invention content is as follows:

the invention aims to provide a novel tubular preheater and a preheating method of a biomass boiler. This structure manufacturing is simple, and simple to operate can realize its heat transfer function under specific flue gas flow direction circumstances, has perfected the holistic form of arranging of boiler.

The above purpose is realized by the following technical scheme:

a novel tubular preheater of a biomass boiler comprises: the tube case, the tube case include the stand structure, the stand structure be the square structure body that forms by 4 stand welding all around, stand structure inside be fixed with the tube sheet, the tube sheet downthehole middle tube bank of wearing and with middle tube bank welding on 4 stands, middle tube bank be the square and arrange, the tube sheet between install a set of connection backplate, connecting plate parallel arrangement, tube sheet and stand pass through the sliding backing plate and install on the steel construction, the side guard plate divide into left and right backplate, weld respectively the tube sheet with the stand on.

The novel tubular preheater of the biomass boiler is characterized in that the side face of the upright post structure is welded with the air channel communicating box, the bottom of the pipe box is provided with a flue gas inlet between steel structure beams, the top of the pipe box is provided with a flue gas outlet, the side face of the pipe box is provided with a cold air inlet above the connecting protection plate, and the side face of the pipe box is provided with a hot air outlet below the connecting protection plate.

A novel tubular preheater of a biomass boiler and a preheating method thereof comprise the following steps:

the tube box is composed of seven parts, namely a tube plate, a middle tube bundle, a side protection plate, an air duct communicating box, a stand column structure, a connecting protection plate between the tube plates and a lower sliding base plate;

hot flue gas enters from a flue gas inlet, flows from bottom to top and flows among the pipes, and air flows in a snake-shaped horizontal manner inside the pipes; the middle tube bundle, the left and right guard plates and the air duct communicating box are welded on the tube plate and the four upright posts, the tube plate and the upright posts act on a steel structure through a sliding base plate, the sliding base plate is composed of two steel plates, the upper and lower surfaces of the two steel plates are attached and can slide, and the sliding base plate can absorb thermal expansion;

the tube plates of all the tube boxes are subjected to groove butt welding on site, so that the multi-stage tube boxes form a whole with good rigidity, the tube boxes are in rigid connection, the generated thermal expansion is absorbed by the sliding base plate below the tube boxes, the heat exchange function of the boiler is realized under the condition of specific smoke flow direction, and the arrangement form of the whole boiler is perfected.

The invention has the beneficial effects that:

1. the invention relates to a novel tubular preheater of a biomass boiler and a preheating method thereof, the structure realizes the function of heat exchange of flue gas and air from bottom to top, has simple manufacture and convenient installation, can realize the heat exchange function under the condition of specific flue gas flow direction, perfects the integral arrangement form of the boiler, has been successfully used in engineering at present, has good effect and is accepted by users.

The tube plates of all the tube boxes are subjected to groove butt welding on site, the multi-stage tube boxes can form a whole with good rigidity in the welding mode to form a whole rigid body, and the generated thermal expansion is absorbed by the sliding base plate below the multi-stage tube boxes, so that the service life of the product is effectively prolonged, the heat exchange performance of the boiler is improved, and the energy consumption is reduced.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of fig. 1.

The specific implementation mode is as follows: