CN205878210U - Biomass boiler energy -saving appliance - Google Patents

Abstract

The utility model relates to a biomass boiler energy -saving appliance, the flue wall is personally experienced sth. Part of the body by steelframe and the rectangle cavity that heat preservation rock wool constitutes all around, the snakelike bank of tubes of diaphragm type is installed in the internal portion of cavity, imports the collection case and exports the collection case and installs to the side of the steelframe, and the one end intercommunication of the case and the snakelike bank of tubes of diaphragm type is collected in the import, and the other end that exports the collection case and the snakelike bank of tubes of diaphragm type feeds through. The beneficial effects of the utility model are that: through setting up the snakelike bank of tubes of diaphragm type in flue wall all around, the flue gas flows past from between the snakelike bank of tubes of diaphragm type, and upper and lower intertube can not form the flue gas swirl because of the band steel separation, and bank of tubes interval is big, and the flue gas circulation is unobstructed, thoroughly cuts except that energy -saving appliance deposition bridging persistent ailment, it is less that the flue gas flows through the energy -saving appliance resistance, reduces draught fan power consumption volume, snakelike intervascular band steel has improved the steel availability factor of energy -saving appliance as receiving the hot side, and boiler afterbody exhaust gas temperature is low, and boiler efficiency is high.

Description

Biomass boiler energy-saving appliance

Technical Field

The utility model relates to a burner technical field especially relates to a biomass boiler energy-saving appliance.

Background

The biomass boiler is a kind of boiler, the boiler uses biomass as fuel, and in an industrial boiler using biomass as fuel, an energy saver at the tail of the boiler generally adopts a cast iron energy saver. The wall of the cast iron energy saver is thick, the steel consumption is high, the fins of the energy saver tube are dense, and the cast iron tube is brittle and cannot resist steam-water impact; the biomass fuel has large ash content and light ash particles, is easy to adhere to an energy saver at the tail part of the boiler, has serious ash deposition at the flue gas vortex between an upper cast iron pipe and a lower cast iron pipe of the cast iron energy saver, and has large flue gas flow velocity, serious resistance increase of the energy saver and high power consumption of a boiler induced draft fan because the cast iron pipes have dense fins and the left and right cast iron pipes quickly deposit ash to bridge; meanwhile, the heat transfer of the energy saver is deteriorated, the exhaust gas temperature is higher, the thermal efficiency of the boiler is reduced, and the output of the boiler is insufficient; therefore, the tail ash deposition speed of the biomass boiler adopting the cast iron energy saver is high, and the boiler has to be shut down for ash removal in about two months.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides a biomass boiler energy-saving appliance.

In order to realize the purpose, the utility model provides a biomass boiler economizer which comprises a peripheral flue wall, a membrane type serpentine tube bank, an inlet header and an outlet header; wherein,

the peripheral flue wall is a rectangular cavity body consisting of a steel frame and heat-preservation rock wool;

the utility model discloses a steel frame, including cavity, import collection box, export collection box, import collection box, export collection box, the membrane type coiled tube bank install the internal portion of cavity, import collection box with the one end intercommunication of membrane type coiled tube bank, export collection box with the other end intercommunication of membrane type coiled tube bank.

In the biomass boiler energy saver, the membrane type serpentine tube bank is formed by welding the serpentine tubes and the flat steel on two sides.

According to the biomass boiler energy saver, the bending radius of the coiled pipe is 50mm, the thickness of the flat steel is 4mm, and the interval between the membrane type coiled pipe rows is 100 mm.

In the biomass boiler energy saver, the membrane type serpentine tube bank is arranged on the steel frame through the two hanging devices.

In the biomass boiler energy saver, the membrane type serpentine tube rows are arranged in parallel and in line.

According to the biomass boiler energy saver, the lower parts of the peripheral flue walls are provided with the access holes, and the access holes are formed below the membrane type serpentine tube bank.

The steel frame is formed by welding the inner steel plate and the outer steel plate, and the heat-preservation rock wool is embedded between the inner steel plate and the outer steel plate.

In the biomass boiler economizer, the thickness of the heat-preservation rock wool is 50 mm.

In the biomass boiler energy saver, the inlet header and the outlet header are both fixed on the steel frame through U-shaped bolts.

According to the biomass boiler energy saver, the flue walls around the periphery are provided with the flue gas inlet and the flue gas outlet.

The utility model has the advantages that: through the film type serpentine tube banks arranged in the peripheral flue walls, flue gas flows through the film type serpentine tube banks, a flue gas vortex cannot be formed between the upper tube bank and the lower tube bank due to the obstruction of flat steel, the space between the tube banks is large, the flue gas circulation is smooth, and the long-standing diseases caused by the ash deposition of the energy saver are thoroughly eliminated; the resistance of the flue gas flowing through the energy saver is small, and the power consumption of the induced draft fan is reduced; the flat steel between the snakelike pipes is used as a heating surface, so that the steel use efficiency of the energy saver is improved; the exhaust gas temperature at the tail part of the boiler is low, the boiler efficiency is high, and the boiler output is stable; the method has the advantages of reducing the number of times of blowing out and cleaning ash, reducing the labor intensity of a fireman, ensuring continuous and reliable production steam, thoroughly eliminating the ash deposit bridging of the energy saver, reducing the exhaust gas temperature at the tail part of the boiler, and having small power consumption of the draught fan, high efficiency, energy saving, practicability and reliability.

Drawings

FIG. 1 is a schematic structural view of an economizer of a biomass boiler according to the present invention;

fig. 2 is a sectional view taken along line a-a in fig. 1.

In the figure: 1. an inlet header; 2. an outlet header; 3. a membrane type serpentine tube bank; 4. a serpentine tube; 5. flat steel; 6. a hanging device; 7. a peripheral flue wall; 8. a steel frame; 9. heat preservation rock wool; 10. an access hole; 11. u-shaped bolt.

Detailed Description

As shown in fig. 1-2, in the biomass boiler economizer of the embodiment of the present invention, a peripheral flue wall 7, a membrane type serpentine tube bank 3, an inlet header 1 and an outlet header 2; wherein, the peripheral flue wall 7 is a rectangular cavity body consisting of a steel frame 8 and heat preservation rock wool 9. Diaphragm type snakelike bank of tubes 3 installs at the internal portion of cavity, and import collection box 1 and export collection box 2 are installed in 8 sides of steelframe, import collection box 1 and the one end intercommunication of diaphragm type snakelike bank of tubes 3, export collection box 2 and the other end intercommunication of diaphragm type snakelike bank of tubes 3. The membrane type serpentine tube bank 3 is formed by welding a serpentine tube 4 and a flat steel 5 on two sides, the bending radius of the serpentine tube 4 is 50mm, the thickness of the flat steel 5 is 4mm, and the distance between the membrane type serpentine tube bank 3 is 100 mm. The membrane type serpentine tube bank 3 is installed on the steel frame 8 through two hanging devices 6, the membrane type serpentine tube bank 3 is arranged in parallel, and a maintenance opening 10 is arranged below the membrane type serpentine tube bank 3. The steelframe 8 is formed by interior steel sheet and outer steel sheet welding, and heat preservation rock wool 9 is inlayed between interior steel sheet and the outer steel sheet, and heat preservation rock wool 9 thickness is 50 mm. Import collection case 1 and export collection case 2 all fix on steelframe 8 through U type bolt 11, import collection case 1 and export collection case 2 outside are equipped with the shell, are equipped with gas inlet and exhanst gas outlet on the flue wall 7 all around, and the shell is installed to rectangular cavity body both sides.

The steel use efficiency of the energy saver is improved; the exhaust gas temperature at the tail part of the boiler is low, the boiler efficiency is high, and the boiler output is stable; the method has the advantages of reducing the number of times of blowing out and cleaning ash, reducing the labor intensity of a fireman, ensuring continuous and reliable production steam, thoroughly eliminating the ash deposit bridging of the energy saver, reducing the exhaust gas temperature at the tail part of the boiler, and having small power consumption of the draught fan, high efficiency, energy saving, practicability and reliability.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An economizer for a biomass boiler, comprising: the device comprises a peripheral flue wall (7), a membrane type serpentine tube bank (3), an inlet header (1) and an outlet header (2); wherein,

the peripheral flue wall (7) is a rectangular cavity body consisting of a steel frame (8) and heat-preservation rock wool (9);

film type coiled tube bank (3) are installed the internal portion of cavity, import collection box (1) with export collection box (2) are installed steelframe (8) side, import collection box (1) with the one end intercommunication of film type coiled tube bank (3), export collection box (2) with the other end intercommunication of film type coiled tube bank (3).

2. The biomass boiler economizer of claim 1 wherein: the membrane type serpentine tube row (3) is formed by welding a serpentine tube (4) and a flat steel (5) on two sides.

3. The biomass boiler economizer of claim 2 wherein: the bending radius of the coiled pipe (4) is 50mm, the thickness of the flat steel (5) is 4mm, and the distance between the membrane type coiled pipe rows (3) is 100 mm.

4. The biomass boiler economizer of claim 2 wherein: the membrane type serpentine tube bank (3) is installed on the steel frame (8) through two hanging devices (6).

5. The biomass boiler economizer of claim 4 wherein: the membrane type serpentine tube rows (3) are arranged in parallel and in line.

6. The biomass boiler economizer of claim 5 wherein: and the lower part of the peripheral flue wall (7) is provided with an access hole (10), and the access hole is positioned below the membrane type serpentine tube bank (3).

7. The biomass boiler economizer of claim 1 wherein: steelframe (8) are formed by interior steel sheet and outer steel sheet welding, heat preservation rock wool (9) are inlayed between interior steel sheet and the outer steel sheet.

8. The biomass boiler economizer of claim 7 wherein: the thickness of the heat preservation rock wool (9) is 50 mm.

9. The biomass boiler economizer of claim 1 wherein: the inlet header (1) and the outlet header (2) are fixed on the steel frame (8) through U-shaped bolts (11).

10. The biomass boiler economizer of claim 1 wherein: and a flue gas inlet and a flue gas outlet are arranged on the peripheral flue wall (7).