A horizontal combined fuel oil and gas biomass steam generator

Abstract

The present invention relates to a horizontal combined fuel oil and gas biomass steam generator in the field of thermal energy machinery, comprising an evaporator body, the evaporator body comprising a base, a lower header arranged on the base, a furnace located on the lower header, a boiler drum correspondingly arranged on the furnace, and a downcomer arranged between the boiler drum and the lower header; a plurality of groups of heating surface tube assemblies are arranged between the boiler drum and the lower header, the heating surface tube assemblies are located between the lower header and the boiler drum, a steam-water separator and an annular reheating tube are arranged in the boiler drum; a main steam valve is arranged in the annular reheating tube; a safety valve and a pressure gauge are respectively arranged on the boiler drum; a feeder is arranged next to the furnace; the invention can increase the radiation heating surface of the heating tube, improve the heating efficiency, and most importantly, improve the steam generation efficiency, while also reducing the cost, and at the same time separate the two phases of the steam-water mixture, ensure the dryness of the steam used in the steam-using equipment, and extend the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to a steam generator in the field of thermal energy machinery. Background Art

[0002] A steam generator is a steam boiler with a water volume of less than 30 liters. It is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. The original meaning of a pot refers to a water container heated on fire, and a furnace refers to a place where fuel is burned. A boiler includes two parts: a pot and a furnace. An industrial boiler is an indispensable device for providing steam required for production and heating in various industrial enterprises. Traditional steam generators are mostly formed by a combination of straight pipes, curved pipes and drums. The steam output time is slow, and the evaporation volume cannot be increased due to the limitation of water volume. The steam output temperature is low. This evaporator adopts a unique structural form when the water volume is less than the specified 30 liters, which greatly increases the evaporation volume of the boiler, thereby achieving the excellent performance of fast steam output, safe use, and greatly reduced energy consumption. A boiler that uses biomass energy as fuel is called a biomass boiler. The traditional hot water boiler structure has low combustion efficiency, less flue gas return, low utilization rate, and relatively large energy consumption during use, which cannot achieve the desired use effect. Summary of the invention

[0003] The purpose of the present invention is to provide a horizontal combined oil and gas biomass steam generator, which can increase the radiation heating surface of the heat receiving tube, improve the heating efficiency, and ultimately improve the steam generation efficiency, while also reducing costs. At the same time, the two phases of the steam-water mixture are separated to ensure the dryness of the steam used in the steam-using equipment and extend the service life of the equipment.

[0004] The object of the present invention is achieved as follows: a horizontal combined fuel oil and gas biomass steam generator comprises an evaporator body, the evaporator body comprises a base, a lower header arranged on the base, a furnace located on the lower header, a boiler drum is correspondingly arranged on the furnace, and a downcomer is also arranged between the boiler drum and the lower header; a plurality of groups of heating surface tube assemblies are arranged between the boiler drum and the lower header, the heating surface tube assemblies are located between the lower header and the boiler drum, a steam-water separator and an annular reheating pipe are arranged in the boiler drum; a main steam valve is correspondingly arranged on the annular reheating pipe; a safety valve and a pressure gauge are also respectively arranged on the boiler drum; a feeder is arranged next to the furnace.

[0005] When the present invention is working, water can be directly delivered into the boiler drum, and the water level can be observed by the liquid level meter next to it, and then the biomass can be burned through the furnace or through oil or gas; during the combustion, a plurality of groups of heating surface tube assemblies arranged between the boiler drum and the lower header begin to be heated, and the steam-water mixture formed by the heating rises to form steam; during the heating process, since the heating surface tubes on the heating surface tube assembly are arranged in an S shape, the heating surface is increased, and at the same time, fins are welded on the longitudinal section and transition section of the heating tube, and the fins on adjacent heating surface tubes are also staggered, which can further increase the heating surface, improve work efficiency, and reduce costs. At the same time, the steam-water mixture moves from bottom to top. During this process, the steam-water mixture overflows upward and enters the steam input mechanism through the through holes of the U-shaped baffles on both sides below the middle partition, gradually gathers in the steam input mechanism, and the formed water droplets will be attached to the U-shaped baffle. At the same time, the remaining steam-water mixture enters the steam output mechanism through the air holes set in the middle partition and overflows from the through holes of the upper U-shaped baffle. During this process, the steam-water mixture is at the conveying position with a 180° turn, which is conducive to steam-water separation. At the same time, the water droplets attached to the upper U-shaped baffle can flow out through the water outlet holes of the middle partition, which can improve the separation efficiency and reduce costs.

[0006] The beneficial effect of the present invention is that it can increase the radiation heating surface of the heat pipe, improve the heating efficiency, and ultimately improve the steam generation efficiency, while also reducing costs. At the same time, it can separate the two phases of the steam-water mixture, ensure the dryness of the steam used in the steam-using equipment, and extend the service life of the equipment.

[0007] As a further improvement of the present invention, in order to ensure that the heating surface tube assembly has high heating efficiency and reliable operation; the heating surface tube assembly is provided with a plurality of groups from front to back, and adjacent heating surface tube assemblies are arranged at a distance from one end, and the heating surface tube assembly includes a heating tube and a fin arranged on the heating tube; the heating surface tube assembly includes a left heating surface mechanism and a right heating surface mechanism, and the left heating surface mechanism and the right heating surface mechanism are arranged at an interval.

[0008] As a further improvement of the present invention, in order to ensure that the left heating surface mechanism and the right heating surface mechanism have high heating efficiency and stable heating; the left heating surface mechanism and the right heating surface mechanism are respectively arranged in an S shape, and the heat receiving pipes in the left heating surface mechanism and the right heating surface mechanism respectively include a longitudinal section, a transverse section and a transition section; fins are welded on the outer wall of the longitudinal section and the outer wall of the transition section.

[0009] As a further improvement of the present invention, in order to ensure that the left heating surface mechanism and the right heating surface mechanism are convenient for better heat dissipation and improve work efficiency; a gap is arranged between the fins on the left heating surface mechanism and the right heating surface mechanism, and the fins are flattened and have a long strip shape.

[0010] As a further improvement of the present invention, in order to ensure that the steam-water separator can work normally and efficiently, the boiler drum includes an inner drum and an outer drum, the inner drum is inserted into the outer drum, and the steam-water separator is arranged at a position between the top of the inner drum and the outer drum.

[0011] As a further improvement of the present invention, in order to ensure that the steam-water separator has high working efficiency and good steam-water separation effect; the steam-water separator includes a middle partition, a steam output mechanism arranged on the middle partition and a steam input mechanism arranged below the middle partition, the middle partition is arranged in a V shape, and a water outlet hole is arranged at the bottom of the middle partition, and the two sides of the middle partition are respectively welded to the inner wall of the outer cylinder; the steam output mechanism and the steam input mechanism are respectively welded to the position of the middle partition close to the inner wall of the outer cylinder.

[0012] As a further improvement of the present invention, in order to ensure that the steam-water mixture can overflow from both sides of the middle partition, the steam output mechanism and the steam input mechanism can work normally and stably; the steam output mechanism and the steam input mechanism respectively include U-shaped baffles, the U-shaped baffle of the steam output mechanism is placed downward and welded to the middle partition, and the U-shaped baffle of the steam input mechanism is placed upward and welded to the middle partition, and the welding position of the U-shaped baffle above the middle partition corresponds to the welding position of the U-shaped baffle below the middle partition.

[0013] As a further improvement of the present invention, in order to ensure that the steam and water are easy to separate and the separation effect is good; the U-shaped baffle is provided with a through hole near the center of the drum, and the middle partition with U-shaped baffles welded on both sides is provided with air holes, and the steam-water mixture enters through the through hole of the lower U-shaped baffle and passes through the air hole of the middle partition and then flows out from the through hole set on the upper U-shaped baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the general assembly drawing.

[0015] Figure 2 Side view of the general assembly drawing Figure 1 .

[0016] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0017] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0018] Figure 5 Side view of the general assembly drawing Figure 2 .

[0019] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0020] Among them, 1 is a boiler drum, 2 is a downcomer, 3 is a through hole, 4 is a base, 5 is an evaporator body, 6 is a right heating surface mechanism, 7 is a left heating surface mechanism, 8 is a heating tube, 9 is a fin, 10 is a furnace, 11 is annular reheating tube, 12 is a longitudinal section, 13 is a transverse section, 14 is a transition section, 15 is a vent hole, 16 is a heating surface tube assembly, 17 is a feeder, 18 is a U-shaped baffle, 19 is an inner tube, 20 is an outer tube, 21 is a water outlet, 22 is a middle partition, 23 is a steam input mechanism, and 24 is a steam output mechanism. DETAILED DESCRIPTION

[0021] like Figure 1-6As shown, the object of the present invention is achieved as follows: a horizontal combined fuel oil and gas biomass steam generator, including an evaporator body 5, the evaporator body 5 includes a base 4, a lower header arranged on the base 4, a furnace 10 located on the lower header, a boiler drum 1 is correspondingly arranged on the furnace 10, and a downcomer 2 is also arranged between the boiler drum 1 and the lower header; a plurality of groups of heating surface tube assemblies 16 are arranged between the boiler drum 1 and the lower header, the heating surface tube assembly 16 is located between the lower header and the boiler drum 1, a steam-water separator and an annular reheating pipe 11 are arranged in the boiler drum 1; the annular reheating pipe 11 is correspondingly provided with a main steam valve; a safety valve and a pressure gauge are also respectively provided on the boiler drum 1; a feeder 17 is arranged next to the furnace 10; the heating surface tube assembly 16 is provided between the boiler drum 1 and the lower header, and the heating surface tube assembly 16 is located between the lower header and the boiler drum 1; a steam-water separator and an annular reheating pipe 11 are arranged in the boiler drum 1; a main steam valve is correspondingly provided on the annular reheating pipe 11; a safety valve and a pressure gauge are also respectively provided on the boiler drum 1; a feeder 17 is arranged next to the furnace 10; the heating surface tube assembly 16 is provided between the boiler drum 1 and the lower header, and the heating surface tube assembly 16 is provided between the lower header and the boiler drum 1; a steam-water separator and an annular reheating pipe 11 are provided in the boiler drum 1; a main steam valve is correspondingly provided on the annular reheating pipe 11; a safety valve and a pressure gauge are respectively provided on the boiler drum 1; a feeder 17 is arranged next to the furnace 10; the heating surface tube assembly 16 is provided between the boiler drum 1 and the lower header, and the heating surface Several groups of components 16 are arranged from front to back, and adjacent heating surface tube components 16 are arranged at a distance from each other. The heating surface tube components 16 include a heating tube 8 and a fin 9 arranged on the heating tube 8; the heating surface tube component 16 includes a left heating surface mechanism 7 and a right heating surface mechanism 6, and the left heating surface mechanism 7 and the right heating surface mechanism 6 are arranged at intervals; the left heating surface mechanism 7 and the right heating surface mechanism 6 are respectively arranged in an S shape, and the heating tubes 8 in the left heating surface mechanism 7 and the right heating surface mechanism 6 respectively include a longitudinal section 12, a transverse section 13 and a transition section 14; fins 9 are welded on the outer wall of the longitudinal section 12 and the outer wall of the transition section 14; a gap is provided between the fins 9 on the left heating surface mechanism 7 and the right heating surface mechanism 6. , the fins 9 are flattened and strip-shaped; the boiler drum 1 includes an inner layer drum 19 and an outer layer drum 20, the inner layer drum 19 is sleeved in the outer layer drum 20, and the steam-water separator is arranged at a position between the top of the inner layer drum 19 and the outer layer drum 20; the steam-water separator includes a middle partition 22, a steam output mechanism 24 arranged on the middle partition 22 and a steam input mechanism 23 arranged below the middle partition 22, the middle partition 22 is arranged in a V shape, a water outlet hole 21 is arranged at the bottom of the middle partition 22, and the two sides of the middle partition 22 are respectively welded to the inner wall of the outer layer drum 20; the steam output mechanism 24 and the steam input mechanism 23 are respectively welded to the inner wall of the middle partition 22 close to the inner wall of the outer layer drum 20; the steam output mechanism 24 and the steam input mechanism 23 are respectively welded to the middle partition 22 near the inner wall of the outer layer drum 20; the steam output mechanism The steam output mechanism 24 and the steam input mechanism 23 respectively include a U-shaped baffle 18, the U-shaped baffle 18 of the steam output mechanism 24 is placed downward and welded to the middle partition 22, and the U-shaped baffle 18 of the steam input mechanism 23 is placed upward and welded to the middle partition 22, and the welding position of the U-shaped baffle 18 above the middle partition 22 corresponds to the welding position of the U-shaped baffle 18 below the middle partition 22; the U-shaped baffle 18 is provided with a through hole 3 near the center of the drum 1, and the middle partition 22 with U-shaped baffles 18 welded on both sides is provided with air holes 15, and the steam-water mixture enters through the through hole 3 of the lower U-shaped baffle 18 and passes through the air hole 15 of the middle partition 22 and then flows out from the through hole 3 set at the upper U-shaped baffle 18.

[0022] When the present invention is working, water can be directly delivered to the boiler drum 1, and the water level can be observed by the liquid level meter next to it, and then the biomass can be burned through the furnace 10 or through oil or gas; during the combustion, a plurality of groups of heating surface tube assemblies 16 arranged between the boiler drum 1 and the lower header begin to be heated, and the steam-water mixture formed by the heating rises to form steam; during the heating process, since the heating surface tubes on the heating surface tube assembly 16 are arranged in an S shape, the heating surface is increased, and at the same time, fins 9 are welded on the longitudinal section 12 and the transition section 14 of the heating tube 8, and the fins 9 on the adjacent heating surface tubes are also staggered, which can further increase the heating surface, improve work efficiency, reduce costs, and at the same time, the steam-water mixture can be heated to a certain extent. The mixture moves from bottom to top, and during this process, the steam-water mixture overflows upward and enters the steam input mechanism 23 through the through holes 3 of the U-shaped baffles 18 on both sides below the middle partition 22, gradually gathers in the steam input mechanism 23, and the formed water droplets will be attached to the U-shaped baffle 18. At the same time, the remaining steam-water mixture enters the steam output mechanism 24 through the air holes 15 set in the middle partition 22 and overflows from the through holes 3 of the upper U-shaped baffle 18. During this process, the steam-water mixture is at a conveying position with a 180° turn, which is conducive to steam-water separation. At the same time, the water droplets attached to the upper U-shaped baffle 18 can flow out through the water outlet holes 21 of the middle partition 22, which can improve the separation efficiency and reduce costs.

[0023] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A horizontal combined fuel oil and gas biomass steam generator, comprising an evaporator body, the evaporator body comprising a base, a lower header arranged on the base, a furnace located on the lower header, a boiler drum correspondingly arranged on the furnace, and a downcomer arranged between the boiler drum and the lower header; characterized in that: A plurality of groups of heating surface tube assemblies are arranged between the boiler drum and the lower header, and the heating surface tube assemblies are located between the lower header and the boiler drum, and a steam-water separator and an annular reheating pipe are arranged in the boiler drum; a main steam valve is arranged corresponding to the annular reheating pipe; a safety valve and a pressure gauge are also arranged on the boiler drum respectively; a feeder is arranged next to the furnace; a plurality of groups of heating surface tube assemblies are arranged from front to back, and adjacent heating surface tube assemblies are arranged at a distance from one end, and the heating surface tube assembly includes a heating tube and a fin arranged on the heating tube; the heating surface tube assembly includes a left heating surface mechanism and a right heating surface mechanism, and the left heating surface mechanism and the right heating surface mechanism are arranged at intervals; the boiler drum includes an inner layer tube and an outer layer tube, and the inner layer tube is sleeved in the outer layer tube, and the steam-water separator is arranged at a position between the top of the inner layer tube and the outer layer tube; the steam-water separator includes a middle partition, a steam output mechanism arranged on the middle partition and a fin arranged in the middle The steam input mechanism below the partition plate, the middle partition plate is arranged in a V shape, a water outlet hole is arranged at the bottom of the middle partition plate, and the two sides of the middle partition plate are respectively welded to the inner wall of the outer cylinder; the steam output mechanism and the steam input mechanism are respectively welded at the position of the middle partition plate close to the inner wall of the outer cylinder; the steam output mechanism and the steam input mechanism respectively include U-shaped baffles, the U-shaped baffle of the steam output mechanism is placed downward and welded to the middle partition plate, the U-shaped baffle of the steam input mechanism is placed upward and welded to the middle partition plate, the welding position of the U-shaped baffle above the middle partition plate corresponds to the welding position of the U-shaped baffle below the middle partition plate; the U-shaped baffle plate is provided with a through hole near the center of the boiler drum, and the middle partition plate with U-shaped baffles welded on both sides is provided with air holes, and the steam-water mixture enters through the through hole of the lower U-shaped baffle plate and passes through the air holes of the middle partition plate and then flows out from the through hole arranged at the upper U-shaped baffle plate.

2. A horizontal combined fuel oil and gas biomass steam generator according to claim 1, characterized in that: The left heating surface mechanism and the right heating surface mechanism are respectively arranged in an S shape, and the heat receiving tubes in the left heating surface mechanism and the right heating surface mechanism respectively include a longitudinal section, a transverse section and a transition section; fins are welded on the outer walls of the longitudinal section and the outer walls of the transition section.

3. A horizontal combined fuel oil and gas biomass steam generator according to claim 1, characterized in that: A gap is provided between the fins on the left heating surface mechanism and the right heating surface mechanism, and the fins are flattened and have a long strip shape.

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