Efficient steam combustion energy-saving device

Abstract

The utility model relates to the technical field of biomass boilers, and discloses an efficient combustion steam energy-saving device which comprises a bottom frame, an efficient combustion biomass gas-fired boiler and a water storage barrel are installed on the bottom frame, a barrel body is arranged on the upper portion of the biomass gas-fired boiler, a plurality of first flue gas heat exchange pipes are fixedly installed in the barrel body, and a plurality of second flue gas heat exchange pipes are fixedly installed in the barrel body. A plurality of first smoke heat exchange pipes are installed in the cylinder, smoke guide pipes fixedly installed on the cylinder are arranged at the smoke outlet ends of the first smoke heat exchange pipes, a plurality of second smoke heat exchange pipes are installed in the water storage cylinder, the smoke outlet ends of the second smoke heat exchange pipes are connected with the water storage cylinder, the smoke inlet ends of the second smoke heat exchange pipes are communicated with the smoke guide pipes, and the smoke outlet ends of the second smoke heat exchange pipes are communicated with the water storage cylinder. The top of the water storage cylinder is fixedly connected with a smoke exhaust pipe, and the smoke outlet end of the second smoke heat exchange pipe communicates with the smoke exhaust pipe. According to the utility model, the water storage cylinder can be used for storing and supplying water to deal with water cut-off, and waste heat of discharged flue gas is used for preheating water in the water storage cylinder, so that the heat of the flue gas is fully recovered, and more energy is saved.

Description

Technical Field

[0001] This utility model belongs to the field of biomass boiler technology, specifically a high-efficiency combustion steam energy-saving device. Background Technology

[0002] A biomass gas-fired boiler is a type of boiler that uses biomass energy as fuel, primarily for producing steam, hot water, or hot air. Biomass gas-fired boilers can be categorized into several types, including biomass steam boilers, biomass hot water boilers, biomass hot air furnaces, and biomass thermal oil furnaces. Biomass gas is produced through a gasification process, with main raw materials including crop straw, forest waste, edible mushroom residue, livestock manure, and all combustible materials. These raw materials are partially oxidized during gasification, converting them into gaseous fuel, which is inexhaustible.

[0003] In existing biomass gas boilers, the flue gas duct is located in the upper cylinder to recover heat from the flue gas. However, due to the high temperature of the water inside the cylinder, the relative heat difference between the flue gas and the water is small, resulting in insufficient recovery of flue gas temperature. Therefore, the flue gas leaving the cylinder still carries residual heat, and direct discharge of this heat leads to waste. Furthermore, the aforementioned biomass gas boilers require frequent water replenishment to the upper cylinder. Existing water replenishment structures generally use a water pump to directly transport water from the water supply pipe into the cylinder. However, when unexpected water outages occur, it will affect the operation of the biomass gas boiler. To solve the above problems, a high-efficiency combustion steam energy-saving device is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a high-efficiency combustion steam energy-saving device in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: A high-efficiency combustion steam energy-saving device includes a base frame, on which a high-efficiency combustion biomass gas boiler and a water storage tank are installed. A cylinder is provided on the upper part of the biomass gas boiler, and a water inlet pipe is connected to the cylinder. A delivery pump is installed on the water inlet side of the water inlet pipe. The delivery pump is fixedly installed on the base frame and externally connected to a PLC terminal. The water inlet end of the water inlet pipe is connected to the lower part of the water storage tank. A water replenishment pipe is connected to the bottom of the water storage tank. A water replenishment pump is installed on the water inlet side of the water replenishment pipe and fixedly installed on the base frame. The water replenishment pump is externally connected to a PLC terminal.

[0006] Multiple flue gas heat exchange tubes are fixedly installed inside the cylinder. The flue gas heat exchange tubes are connected to a guide pipe fixedly installed on the cylinder at their outlet ends. Multiple flue gas heat exchange tubes are installed inside the water storage cylinder. The outlet ends of the guide pipes are connected to the water storage cylinder. The inlet ends of the flue gas heat exchange tubes are connected to the guide pipes. A flue gas exhaust pipe is fixedly connected to the top of the water storage cylinder. The outlet ends of the flue gas heat exchange tubes are connected to the exhaust pipe.

[0007] In a preferred embodiment, an electrically controlled valve is installed on the outlet side of the inlet pipe, and the electrically controlled valve is externally connected to the PLC terminal.

[0008] In a preferred embodiment, an electrically controlled valve two is installed on the water inlet side of the water supply pipe, and the electrically controlled valve two is externally connected to the PLC terminal.

[0009] In a preferred embodiment, a photoelectric liquid level sensor is installed on the upper inner wall of the water storage cylinder, and the photoelectric liquid level sensor is externally connected to the PLC terminal.

[0010] In a preferred embodiment, the flue includes a main flue, and the outside of the main flue is wrapped with thermal insulation cotton.

[0011] In a preferred embodiment, an outer protective sleeve is installed on the outside of the water storage cylinder, and the gap between the outer protective sleeve and the water storage cylinder is filled with heat insulation cotton.

[0012] In a preferred embodiment, a pressure relief valve is installed on the top of the water storage cylinder.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a water storage cylinder can be used to pre-store water for the cylinder body, so as to ensure the water supply of the cylinder body when the water supply is interrupted, thereby dealing with water outage situations in emergency situations.

[0015] 2. In this utility model, the flue gas after exchanging heat with the water inside the cylinder still carries residual heat. At this time, the flue gas with residual heat will enter the flue gas heat exchange tube two through the flue gas guide pipe. At this time, the flue gas will exchange heat with the stored water in the water storage tank, thereby preheating the water and fully recovering the heat of the flue gas, which is more energy-efficient. Attached Figure Description

[0016] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model;

[0017] Figure 2 This is a simplified schematic diagram of the internal structure of this utility model from the front view;

[0018] Figure 3This is a simplified schematic diagram of the three-dimensional structure of the water supply cylinder and the smoke guide pipe in this utility model;

[0019] Figure 4 This is a simplified schematic diagram of the three-dimensional cross-sectional structure of the smoke guide pipe in this utility model.

[0020] The diagram shows the following components: 1-base frame, 2-biomass gas boiler, 3-water storage tank, 4-boiler body, 5-inlet pipe, 6-transfer pump, 7-makeup water pipe, 8-makeup water pump, 9-flue gas heat exchanger tube 1, 10-smoke guide pipe, 11-flue gas heat exchanger tube 2, 12-exhaust pipe, 13-electric control valve 1, 14-electric control valve 2, 15-insulation cotton 1, 16-outer protective cylinder, 17-insulation cotton 2, 18-pressure relief valve, 19-photoelectric liquid level sensor, 20-main flue. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] The following will combine Figures 1-4 A detailed description of an efficient combustion steam energy-saving device according to an embodiment of this utility model is provided.

[0023] Example:

[0024] This utility model provides an embodiment of a high-efficiency combustion steam energy-saving device, referencing... Figures 1 to 4 As shown, the system includes a base frame 1, on which a high-efficiency biomass gas boiler 2 and a water storage tank 3 are mounted. A cylinder 4 is located on the upper part of the biomass gas boiler 2, and a water inlet pipe 5 is connected to the cylinder 4. A delivery pump 6 is installed on the water inlet side of the water inlet pipe 5 and is fixedly mounted on the base frame 1. The delivery pump 6 is externally connected to a PLC. The water inlet end of the water inlet pipe 5 is connected to the lower part of the water storage tank 3. A water replenishment pipe 7 is connected to the bottom of the water storage tank 3, and a water replenishment pump 8 is installed on the water inlet side of the water replenishment pipe 7. The water replenishment pump 8 is fixedly mounted on the base frame 1. 8 is connected to the PLC terminal. In this structure, the biomass gas boiler 2 heats the water in the cylinder 4 by burning biomass fuel to generate steam. In the above structure, the water supply pipe 7 is connected to the external main water supply pipe. Then, the water supply pump 8 delivers water to the water storage tank 3 through the water supply pipe 7. The water storage tank 3 stores water. When the cylinder 4 needs to be replenished, the water in the water storage tank 3 can be delivered to the cylinder 4 through the water inlet pipe 5 by the delivery pump 6, thereby replenishing the cylinder 4. After each replenishment of the cylinder 4, the water supply pump 8 is started again to replenish the water storage tank 3.

[0025] In this structure, the water storage tank 3 can pre-store water for the cylinder 4, so that when the water supply is interrupted, the water supply to the cylinder 4 is guaranteed, thus dealing with water outages in emergency situations.

[0026] It should be noted that: the water storage cylinder 3 is sufficient for the cylinder body 4 to replenish water once.

[0027] refer to Figures 1 to 4 As shown, a photoelectric liquid level sensor 19 is installed on the upper inner wall of the water storage cylinder 3. The photoelectric liquid level sensor 19 is externally connected to the PLC terminal. In this structure, when the cylinder 4 is filled with water, the liquid level in the water storage cylinder 3 will be lower than the photoelectric liquid level sensor 19. At this time, the water supply pipe 7 will replenish water into the water storage cylinder 3. When the photoelectric liquid level sensor 19 detects the liquid level, the PLC terminal controls the water supply pipe 7 to close, thereby stopping the replenishment of water to the water storage cylinder 3.

[0028] It should be noted that the above-mentioned photoelectric liquid level sensor 19 is an existing device, and the model of the photoelectric liquid level sensor 19 is FS-IR2016D.

[0029] refer to Figures 1 to 4 As shown, an electric control valve 13 is installed on the outlet side of the water inlet pipe 5. The electric control valve 13 is externally connected to the PLC terminal. This structure uses the PLC terminal to control the opening and closing of the solenoid valve 13, thereby controlling the opening and closing of the water supply pipe 7.

[0030] refer to Figures 1 to 4 As shown, an electric control valve 14 is installed on the inlet side of the water supply pipe 7. The electric control valve 14 is externally connected to the PLC terminal. This structure uses the PLC terminal to control the opening and closing of the electric control valve 14, thereby controlling the opening and closing of the water supply pipe 7.

[0031] refer to Figures 1 to 4 As shown, multiple flue gas heat exchange tubes 9 are fixedly installed inside the cylinder 4. In this structure, the flue gas heat exchange tubes 9 are used to exchange heat between the flue gas and the water inside the cylinder 4.

[0032] refer to Figures 1 to 4 As shown, the flue gas heat exchange tube 9 has a flue gas guide pipe 10 fixedly installed on the cylinder 4 at its outlet end. Multiple flue gas heat exchange tubes 11 are installed inside the water storage cylinder 3. The outlet end of the flue gas guide pipe 10 is connected to the water storage cylinder 3, and the inlet end of the flue gas heat exchange tube 11 is connected to the flue gas guide pipe 10. The top of the water storage cylinder 3 is fixedly connected to the exhaust pipe 12, and the outlet end of the flue gas heat exchange tube 11 is connected to the exhaust pipe 12. In this structure, the flue gas after exchanging heat with the water inside the cylinder 4 still carries residual heat. At this time, the flue gas with residual heat will enter the flue gas heat exchange tube 11 through the flue gas guide pipe 10. At this time, the flue gas will exchange heat with the stored water in the water storage cylinder 3, thereby preheating the water and fully recovering the heat of the flue gas, which is more energy-efficient.

[0033] refer to Figures 1 to 4 As shown, the flue duct 10 includes a main flue 20, and the outside of the main flue 20 is wrapped with thermal insulation cotton 15. This structure uses the main flue 20 to guide the smoke and the thermal insulation cotton 15 outside the main flue 20 to prevent the loss of flue gas temperature.

[0034] refer to Figures 1 to 4 As shown, an outer protective sleeve 16 is installed on the outside of the water storage cylinder 3. The gap between the outer protective sleeve 16 and the water storage cylinder 3 is filled with heat insulation cotton 17. This structure uses the heat insulation cotton 17 between the outer protective sleeve 16 and the water storage cylinder 3 to keep the water storage cylinder 3 warm, thereby preventing the loss of heat from the stored water.

[0035] refer to Figures 1 to 4 As shown, a pressure relief valve 18 is installed on the top of the water storage cylinder 3. This structure uses the pressure relief valve 18 to provide pressure relief protection for the water storage cylinder 3.

[0036] It should be noted that: the aforementioned biomass gas boiler 2 is an existing mature device, and includes a control device for controlling the water supply level inside the cylinder 4. The specific internal equipment structure and principle have been disclosed. This application does not improve the internal structure of the biomass gas boiler 2, so it will not be described in detail here. For details, please refer to patent CN204153754U. Furthermore, the PLC control equipment and control program involved in the aforementioned transfer pump 6, water supply pump 8, photoelectric liquid level sensor 19, electric control valve 13, and electric control valve 2 are all existing technologies, and their principles have been disclosed. This application does not improve the specific control equipment and control program, so it will not be described in detail here.

[0037] The implementation principle of a high-efficiency combustion steam energy-saving device according to an embodiment of this application is as follows: During use, the biomass gas boiler 2 heats the water in the cylinder 4 by burning biomass fuel to generate steam. When the heating causes the water in the cylinder 4 to evaporate and be lost to a certain amount, the PLC terminal can control the start of the delivery pump 6 and the opening of the solenoid valve 13, thereby delivering the water in the water storage tank 3 to the cylinder 4 through the water inlet pipe 5. When the cylinder 4 is replenished with water, the delivery pump 6 and the solenoid valve 13 are closed. Then, the PLC terminal controls the start of the water replenishment pump 8 and the opening of the solenoid valve 14. The water is then delivered to the water storage tank 3 through the water replenishment pipe 7 by the water replenishment pump 8, thereby replenishing the water storage tank 3. When the water level reaches the position of the photoelectric liquid level sensor 19, the PLC terminal controls the water replenishment pump 8 to close and the solenoid valve 14 to close, thereby stopping the replenishment of water to the water storage tank 3. This process can be repeated in a cyclical manner.

[0038] The flue gas heat exchange tube 9 is used to exchange heat between the flue gas and the water inside the cylinder 4. The flue gas still has residual heat after exchanging heat with the water inside the cylinder 4. At this time, the flue gas with residual heat will enter the flue gas heat exchange tube 11 through the flue gas guide pipe 10. Then, the flue gas will exchange heat with the stored water in the water storage tank 3, thereby preheating the water and fully recovering the heat of the flue gas, which is more energy-efficient.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency combustion steam energy-saving device comprising a chassis (1), characterized in that: The chassis (1) is provided with a biomass gas boiler (2) with high combustion efficiency and a water storage cylinder (3), the upper part of the biomass gas boiler (2) is provided with a cylinder (4), the cylinder (4) is connected with a water inlet pipe (5), the water inlet side of the water inlet pipe (5) is provided with a delivery pump (6), the delivery pump (6) is fixedly installed on the chassis (1), the delivery pump (6) is connected with the PLC end, the water inlet end of the water inlet pipe (5) is connected with the lower part of the water storage cylinder (3), the bottom of the water storage cylinder (3) is connected with a water supplement pipe (7), the water inlet side of the water supplement pipe (7) is provided with a water supplement pump (8), the water supplement pump (8) is fixedly installed on the chassis (1), and the water supplement pump (8) is connected with the PLC end; A plurality of smoke gas heat exchange pipes one (9) are fixedly installed in the cylinder (4), the smoke outlet end of the smoke gas heat exchange pipe one (9) is provided with a smoke guide pipe (10) fixedly installed on the cylinder (4), a plurality of smoke gas heat exchange pipes two (11) are installed in the water storage cylinder (3), the smoke outlet end of the smoke guide pipe (10) is connected with the water storage cylinder (3), the smoke inlet end of the smoke gas heat exchange pipe two (11) is communicated with the smoke guide pipe (10), and the top of the water storage cylinder (3) is fixedly connected with a smoke exhaust pipe (12); the smoke outlet end of the smoke gas heat exchange pipe two (11) is communicated with the smoke exhaust pipe (12).

2. The high-efficiency combustion steam energy-saving device according to claim 1, characterized in that: An electric control valve one (13) is installed on the water outlet side of the water inlet pipe (5), and the electric control valve one (13) is connected with the PLC end. ​ 3. The high-efficiency combustion steam energy-saving device according to claim 1, characterized in that: An electric control valve two (14) is installed on the water inlet side of the water supplement pipe (7), and the electric control valve two (14) is connected with the PLC end. ​ 4. The high efficiency combustion steam energy saving device of claim 1, wherein: An optical liquid level sensor (19) is installed on the inner wall of the upper part of the water storage cylinder (3), and the optical liquid level sensor (19) is connected with the PLC end. ​ 5. The high efficiency combustion steam energy saving device of claim 1, wherein: The smoke guide pipe (10) comprises a main flue (20), and the outer part of the main flue (20) is wrapped with heat preservation cotton one (15).

6. The high efficiency combustion steam energy saving device of claim 1, wherein: An outer protection cylinder (16) is installed on the outer part of the water storage cylinder (3), and the gap between the outer protection cylinder (16) and the water storage cylinder (3) is filled with heat preservation cotton two (17).

7. The high efficiency combustion steam energy saving device of claim 1, wherein: A pressure relief protection valve (18) is installed on the top of the water storage cylinder (3).

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