Efficient steam generator

Abstract

The utility model discloses an efficient steam generator, and particularly relates to the technical field of steam generators, which comprises a heating mechanism, the heating mechanism comprises a combustion assembly, the combustion assembly comprises a combustion bin, the combustion bin is communicated with a fuel supply assembly, the heat energy output end of the combustion bin is provided with an evaporation mechanism, and the evaporation mechanism comprises an evaporation bin. An evaporation finned tube is arranged in the evaporation bin, the input end of the evaporation finned tube is communicated with a water source, and a steam exhaust pipe is arranged at the output end of the evaporation finned tube. The water pan is arranged in the secondary condensation bin farthest from the combustor, so that part of heat contained in water vapor in smoke can be recycled, the water vapor is liquefied and recycled for reutilization, and the utilization efficiency of a water source can be improved while the heat exchange efficiency of the equipment is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam generator technical field more specifically, the utility model relates to a kind of efficient steam generator. BACKGROUND

[0002] Steam generator is a kind of equipment using the heat energy generated by fuel combustion to convert water into steam. It is widely used in industry, power plants, heating systems and ships and other fields. Steam generator is mainly composed of hearth, evaporator and feed water pump, which heats the water in the container by the energy source in the hearth (such as fossil fuels, nuclear energy, biomass or electric energy) to make it reach the boiling state and eventually generate steam. In this process, heat is released from fuel combustion and is conducted to water in the evaporator. As the water temperature rises, the water begins to evaporate into steam, and under certain pressure, it can be transported to where it is needed through pipes.

[0003] The existing steam generator usually installs a condenser on the path of flue gas discharge to improve heat exchange efficiency. The condenser pipeline absorbs the remaining heat in the flue gas generated by fuel combustion to preheat the water in the pipeline, and then pumps it into the evaporator pipeline. However, many fossil fuels (such as coal, oil and natural gas) and biomass fuels produce water vapor when they are burned. These relatively high-temperature water vapor is discharged with flue gas, wasting a lot of heat and water resources. SUMMARY

[0004] The efficient steam generator provided by the utility model solves the problem that existing steam generators using fossil fuels (such as coal, oil and natural gas) and biomass fuels produce water vapor when they are burned. These relatively high-temperature water vapor is discharged with flue gas, wasting a lot of heat and water resources.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an efficient steam generator, comprising: a heating mechanism, the heating mechanism comprising a combustion assembly, the combustion assembly comprising a combustion bin, the combustion bin being connected with a fuel supply assembly, the combustion bin having a heat energy output end provided with an evaporation mechanism, the evaporation mechanism comprising an evaporation bin, the evaporation bin being provided with an evaporation finned tube, the evaporation finned tube having an input end connected with a water source, and the evaporation finned tube having an output end provided with a steam exhaust pipe.

[0006] The waste heat recovery mechanism is arranged on the evaporation bin and comprises a secondary condensation bin, at least one primary condensation bin is arranged between the secondary condensation bin and the evaporation bin, heat recovery finned pipes are arranged in the secondary condensation bin and the primary condensation bin, heat exchange mechanisms are arranged between the heat recovery finned pipes for exchanging water flow, a water pan is arranged below the heat recovery finned pipe farthest from the evaporation bin, a condensation drain pipe is communicated with the water pan, an output end of the condensation drain pipe is communicated with an input end of the evaporation finned pipe, and the combustion bin, the evaporation bin, the primary condensation bin and the secondary condensation bin are sequentially distributed from bottom to top.

[0007] In a preferred embodiment, the heat exchange mechanism comprises a water inlet pipe, an input end of the water inlet pipe is communicated with a water source, an electromagnetic valve and a water flow sensor are arranged at the input end of the water inlet pipe, and an output end of the water inlet pipe is communicated with an input end of the heat recovery finned pipe in the secondary condensation bin.

[0008] In a preferred embodiment, an output end of the heat recovery finned pipe in the secondary condensation bin is communicated with an exchange pipe one, an output end of the exchange pipe one is communicated with a water pump, an output end of the water pump is communicated with an exchange pipe two, an output end of the exchange pipe two is communicated with an input end of the heat recovery finned pipe in the primary condensation bin, and an output end of the heat recovery finned pipe in the primary condensation bin is communicated with an exchange pipe three.

[0009] In a preferred embodiment, both ends of the evaporation finned pipe are communicated with a water box, the water box is detachably connected with the evaporation bin, a water level probe is arranged on the water box, and an output end of the exchange pipe three is communicated with the water box.

[0010] In a preferred embodiment, the heat recovery finned pipe is arranged in a continuous and serpentine manner, and the evaporation finned pipe is arranged in a plurality of single pipes which are uniformly distributed on the water box.

[0011] In a preferred embodiment, smoke flow uniformizing plates are sequentially arranged between the evaporation bin, the secondary condensation bin and the primary condensation bin, and a smoke outlet is arranged on the secondary condensation bin.

[0012] In a preferred embodiment, heat insulation plates are arranged on the bin walls of the combustion bin, the evaporation bin, the primary condensation bin and the secondary condensation bin.

[0013] In a preferred embodiment, a burner is arranged in the combustion bin, and an ignition needle, a flame sensing needle and a fire observation hole are arranged below the evaporation finned pipe on the evaporation bin.

[0014] In a preferred embodiment, a fan and a gas valve are communicated with a fuel input end of the burner, and a Venturi tube is communicated with an input end of the fan.

[0015] The beneficial effects of the utility model lie in:

[0016] This invention, by setting a water receiving tray in the secondary condensation chamber furthest from the burner, can recover some of the heat contained in the water vapor in the flue gas and liquefy and recycle the water vapor for reuse. This further improves the heat exchange efficiency of the equipment while also increasing the efficiency of water source utilization. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention from a first-person perspective.

[0018] Figure 2 This is a three-dimensional schematic diagram of the present invention from a second perspective.

[0019] Figure 3 This is a cross-sectional view of the present invention from a second perspective.

[0020] Figure 4 This is a cross-sectional view of the present invention from a first perspective.

[0021] Figure 5 This is a first-person view of the exploded structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the exploded structure of this utility model from a third-person perspective.

[0023] Figure 7 This is a schematic diagram of the heat insulation plate part of this utility model.

[0024] The attached diagram is labeled as follows: 1. Heating mechanism; 11. Fuel supply assembly; 111. Fan; 112. Venturi tube; 113. Gas valve; 12. Combustion assembly; 121. Combustion chamber; 122. Burner; 123. Ignition needle; 124. Flame sensor needle; 125. Observation hole; 2. Evaporation mechanism; 21. Evaporation chamber; 22. Evaporation finned tube; 23. Water box; 24. Water level probe; 25. Steam exhaust pipe; 26. Flue gas equalization plate; 27. Insulation plate; 3. Waste heat recovery mechanism; 31. Secondary condensation chamber; 32. Primary condensation chamber; 33. Heat recovery finned tube; 34. Flue gas outlet; 35. Water tray; 36. Condensate drain pipe; 4. Heat exchange mechanism; 41. Water inlet pipe; 42. Solenoid valve; 43. Water flow sensor; 44. Exchange pipe one; 45. Water pump; 46. Exchange pipe two; 47. Exchange pipe three. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Refer to the instruction manual appendix Figures 1 to 7 A high-efficiency steam generator includes: a heating mechanism 1, which includes a combustion assembly 12, a combustion chamber 121, a fuel supply assembly 11 connected to the combustion chamber 121, an evaporation mechanism 2 provided at the heat output end of the combustion chamber 121, an evaporation mechanism 2 including an evaporation chamber 21, an evaporation finned tube 22 provided inside the evaporation chamber 21, a water source connected to the input end of the evaporation finned tube 22, and a steam exhaust pipe 25 provided at the output end of the evaporation finned tube 22;

[0027] The evaporation chamber 21 is equipped with a waste heat recovery mechanism 3, which includes a secondary condensation chamber 31. At least one primary condensation chamber 32 is provided between the secondary condensation chamber 31 and the evaporation chamber 21. Both the secondary condensation chamber 31 and the primary condensation chamber 32 are equipped with heat recovery finned tubes 33. Several heat recovery finned tubes 33 are connected to each other by a heat exchange mechanism 4 for exchanging water flow. A water receiving tray 35 is provided below the heat recovery finned tube 33 furthest from the evaporation chamber 21. A condensate drain pipe 36 is connected to the water receiving tray 35. The output end of the condensate drain pipe 36 is connected to the input end of the evaporation finned tube 22. The combustion chamber 121, the evaporation chamber 21, the primary condensation chamber 32 and the secondary condensation chamber 31 are distributed from bottom to top.

[0028] It should be noted that one-way valves are installed at the output ends of the first exchange pipe 44, the second exchange pipe 46, the third exchange pipe 47, and the steam exhaust pipe 25.

[0029] In this embodiment, the specific implementation scenario is as follows: the hot flue gas generated by the combustion of fuel in the burner 122 passes sequentially from bottom to top through the evaporation chamber 21, the primary condensation chamber 32, and the secondary condensation chamber 31, and is finally discharged from the flue gas outlet 34; water is injected into the secondary condensation chamber 31 from the water inlet pipe 41, and after flowing sequentially through the serpentine heat recovery finned tubes in the secondary condensation chamber 31 and the primary condensation chamber 32, it flows into the evaporation finned tube 22 in the evaporation chamber 21. The evaporation finned tube 22 is closest to the heat output end of the burner 122. The water in the evaporation finned tube 22 absorbs heat and evaporates into high-pressure steam, which is then discharged from the steam exhaust pipe 25 for utilization. The waste heat in the flue gas is utilized by multiple heat recovery finned tubes. The heat recovery finned tube 33 absorbs most of the heat used to preheat the water flow, thereby improving the heat exchange efficiency. Since the secondary condensation chamber 31 is farthest from the heat output end of the burner 122, and the water source first passes through the heat recovery finned tube 33 in the secondary condensation chamber 31, the outer surface temperature of the heat recovery finned tube 33 in the secondary condensation chamber 31 is the lowest. The water vapor contained in the flue gas is most easily liquefied into small water droplets when passing through the heat recovery finned tube 33 and adheres to the heat recovery finned tube 33. These water sources containing a certain amount of heat are collected by the water receiving pan 35 and then flow back to the water inlet pipe 41 through the condensate drain pipe 36 for reuse, thereby further improving the heat exchange efficiency of the equipment.

[0030] Refer to the instruction manual appendix Figure 2 and Figure 6 In this embodiment, the heat exchange mechanism 4 includes a water inlet pipe 41, the input end of which is connected to a water source. The input end of the water inlet pipe 41 is equipped with a solenoid valve 42 and a water flow sensor 43, and the output end of the water inlet pipe 41 is connected to the input end of the heat recovery finned tube 33 in the secondary condensation chamber 31.

[0031] It should be noted that the solenoid valve 42 can analyze the water supply rate based on the comprehensive data provided by the water flow sensor 43 and the water level probe 24.

[0032] Refer to the instruction manual appendix Figure 3 and Figure 6 In this embodiment, the output end of the heat recovery finned tube 33 in the secondary condensation chamber 31 is connected to the first exchange tube 44, the output end of the first exchange tube 44 is connected to the water pump 45, the output end of the water pump 45 is connected to the second exchange tube 46, the output end of the second exchange tube 46 is connected to the input end of the heat recovery finned tube 33 in the primary condensation chamber 32, and the output end of the heat recovery finned tube 33 in the primary condensation chamber 32 is connected to the third exchange tube 47.

[0033] It should be noted that one or more condensation chambers 32 can be set up according to the actual situation.

[0034] Refer to the instruction manual appendix Figure 3 and Figure 6In this embodiment, the two ends of the evaporation finned tube 22 are connected to the water box 23. The water box 23 is detachably connected to the evaporation chamber 21. The water box 23 is equipped with a water level probe 24. The output end of the exchange tube 3 47 is connected to the water box 23.

[0035] Refer to the instruction manual appendix Figure 3 and Figure 5 In this embodiment, the heat recovery finned tube 33 is arranged in a continuous serpentine pattern, and the evaporation finned tube 22 is arranged in multiple single tubes evenly distributed on the water box 23.

[0036] Refer to the instruction manual appendix Figure 4 and Figure 5 In this embodiment, the evaporation chamber 21, the secondary condensation chamber 31 and the primary condensation chamber 32 are arranged with flue gas equalization plates 26 in sequence, and the secondary condensation chamber 31 is provided with a flue gas outlet 34.

[0037] It should be noted that the dimensions of the flue gas equalization plate 26 are compatible with those of the evaporation finned tube 22 and the heat recovery finned tube 33.

[0038] Refer to the instruction manual appendix Figure 4 and Figure 7 In this embodiment, heat insulation plates 27 are provided on the walls of the combustion chamber 121, the evaporation chamber 21, the primary condensation chamber 32 and the secondary condensation chamber 31.

[0039] It should be noted that the heat insulation panel 27 is a detachable design.

[0040] Refer to the instruction manual appendix Figure 1 and Figure 6 In this embodiment, a burner 122 is provided inside the combustion chamber 121, and an ignition needle 123, a flame sensor needle 124, and a viewing hole 125 are provided on the evaporation chamber 21 below the evaporation fin tube 22.

[0041] It should be noted that the observation hole 125 allows staff to easily check the equipment's operational status.

[0042] Refer to the instruction manual appendix Figure 1 and Figure 4 In this embodiment, the fuel input end of the burner 122 is connected to a fan 111 and a gas valve 113, and the input end of the fan 111 is connected to a venturi tube 112.

[0043] It should be noted that the use of a venturi tube in conjunction with a blower can effectively improve air delivery efficiency, thereby enabling the fuel to burn more completely and thus improving fuel utilization efficiency.

[0044] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-efficiency steam generator, comprising: A heating mechanism (1) is provided, the heating mechanism (1) includes a combustion assembly (12), the combustion assembly (12) includes a combustion chamber (121), the combustion chamber (121) is connected to a fuel supply assembly (11), the heat output end of the combustion chamber (121) is provided with an evaporation mechanism (2), the evaporation mechanism (2) includes an evaporation chamber (21), the evaporation chamber (21) is provided with an evaporation finned tube (22), the input end of the evaporation finned tube (22) is connected to a water source, and the output end of the evaporation finned tube (22) is provided with a steam exhaust pipe (25); The invention is characterized in that a waste heat recovery mechanism (3) is provided on the evaporation chamber (21), the waste heat recovery mechanism (3) includes a secondary condensation chamber (31), at least one primary condensation chamber (32) is provided between the secondary condensation chamber (31) and the evaporation chamber (21), heat recovery finned tubes (33) are provided in both the secondary condensation chamber (31) and the primary condensation chamber (32), a heat exchange mechanism (4) is provided between several heat recovery finned tubes (33) for exchanging water flow, a water receiving tray (35) is provided below the heat recovery finned tube (33) furthest from the evaporation chamber (21), a condensate drain pipe (36) is connected to the water receiving tray (35), the output end of the condensate drain pipe (36) is connected to the input end of the evaporation finned tube (22), and the combustion chamber (121), evaporation chamber (21), primary condensation chamber (32) and secondary condensation chamber (31) are distributed in order from bottom to top.

2. The high-efficiency steam generator according to claim 1, characterized in that, The heat exchange mechanism (4) includes a water inlet pipe (41), the input end of which is connected to a water source. The input end of the water inlet pipe (41) is equipped with a solenoid valve (42) and a water flow sensor (43), and the output end of the water inlet pipe (41) is connected to the input end of the heat recovery finned tube (33) in the secondary condensation chamber (31).

3. A high-efficiency steam generator according to claim 2, characterized in that, The output end of the heat recovery finned tube (33) in the secondary condensing chamber (31) is connected to the first exchange tube (44), the output end of the first exchange tube (44) is connected to the water pump (45), the output end of the water pump (45) is connected to the second exchange tube (46), the output end of the second exchange tube (46) is connected to the input end of the heat recovery finned tube (33) in the primary condensing chamber (32), and the output end of the heat recovery finned tube (33) in the primary condensing chamber (32) is connected to the third exchange tube (47).

4. A high-efficiency steam generator according to claim 3, characterized in that, The two ends of the evaporation finned tube (22) are connected to a water box (23). The water box (23) is detachably connected to the evaporation chamber (21). A water level probe (24) is provided on the water box (23). The output end of the exchange tube (47) is connected to the water box (23).

5. A high-efficiency steam generator according to claim 4, characterized in that, The heat recovery finned tube (33) is arranged in a continuous serpentine pattern, and the evaporation finned tube (22) consists of multiple single tubes evenly distributed on the water box (23).

6. A high-efficiency steam generator according to claim 5, characterized in that, The evaporation chamber (21), the secondary condensation chamber (31) and the primary condensation chamber (32) are arranged with flue gas equalization plates (26) in sequence, and the secondary condensation chamber (31) is provided with a flue gas outlet (34).

7. A high-efficiency steam generator according to claim 6, characterized in that, The combustion chamber (121), evaporation chamber (21), primary condensation chamber (32) and secondary condensation chamber (31) are all equipped with heat insulation plates (27).

8. A high-efficiency steam generator according to claim 7, characterized in that, The combustion chamber (121) is equipped with a burner (122), and the evaporation chamber (21) is equipped with an ignition needle (123), a flame sensor (124) and a viewing hole (125) located below the evaporation finned tube (22).

9. A high-efficiency steam generator according to claim 8, characterized in that, The fuel input end of the burner (122) is connected to a blower (111) and a gas valve (113), and the input end of the blower (111) is connected to a venturi tube (112).

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