Waste heat recovery structure of incinerator

Abstract

The utility model relates to a waste heat recovery structure of an incinerator, and aims to solve the problems that a waste heat recovery structure of an existing incinerator is complex, scaling is prone to occurring in a waste heat recovery tank in the waste heat recovery process of an incinerator body, hot water in the waste heat recovery tank cannot be replaced automatically, and waste heat is wasted. The waste heat recovery device comprises a furnace body, a waste heat recovery groove is formed in the furnace body, a liquid return pipe is installed above one end of the furnace body, a liquid inlet pipe is installed below one end of the furnace body, and a liquid outlet pipe is installed below the other end of the furnace body. The other end of the liquid inlet pipe and the other end of the liquid return pipe are provided with coiled pipes, the liquid inlet pipe is provided with a circulating pump, and the exterior of the coiled pipes is provided with a waste heat recovery tank, the phenomenon that scaling occurs in the waste heat recovery tank in the waste heat recovery process of the boiler body is avoided, the number of parts of the waste heat boiler structure is reduced, and the waste heat recovery efficiency is improved. And the protection effect of the waste heat boiler structure in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the field of boilers, in particular to a waste heat recovery structure of an incinerator. Background Art

[0002] The basic principle of the waste heat boiler is to inject water into the drum and control the water level at a certain position. When the high-temperature gas passes through the outside of the tube cluster, the water in the tube cluster is heated into a steam-water mixture, forming a pressure difference, which pushes the steam-water mixture into the drum. The power plant boiler also has an economizer and a superheater, which are both composed of tube clusters. The water entering the drum is first heated in the economizer, and then passes through the drum and enters the evaporator, which can improve the efficiency of the evaporator and the efficiency of the boiler. The saturated steam generated by the evaporator is output through the drum.

[0003] According to the published patent 202322212597.3, a waste heat recovery structure of an incinerator includes a boiler, the boiler includes a base, a pair of mounting frames are installed on the top of the base, and a reflux mechanism is provided between the pair of mounting frames on the top of the base, the reflux mechanism includes a water tank, a dosing box is installed on the outer side of the water tank, a first pump is fixedly installed on the inner side of the water tank, the output end of the first pump is fixedly connected to the input end of the economizer through a pipeline, a second pump is fixedly installed on the outer side of the dosing box, the output end of the second pump is fixedly connected to one side of the water tank through a pipeline, and a filter tank is provided on the top of the dosing box, and a filter frame is slidably connected to the filter tank, a processing mechanism is provided on one side of the top of the drum, and the processing mechanism includes a processing box. In the process of realizing the utility model, the inventor found that at least the following problems in the prior art have not been solved: through a motor, when the motor rotates, the rotating rod will rotate, Thereby, a pair of stirring blades are rotated, and the filter screen embedded in the stirring blades can filter impurities. The cooling water in the water tank is transported to the economizer inside the drum through the first pump. At the same time, when the original cooling water in the economizer is replaced and transported to the dosing box through the pipeline, since the trace elements in the water cannot be completely processed, the replaced cooling water may be accompanied by impurities under the heat exchange in the economizer. It is transported to the dosing box, and after the impurities are processed and adsorbed by the filter frame, it is transported to the inside of the water tank through the second pump. The problem of corrosion of the metal surface of the boiler due to poor water quality of the economizer and other components inside the boiler is solved. During use, the waste heat recovery structure of a traditional incinerator is relatively complicated. The furnace body is prone to scaling in the waste heat recovery tank during the waste heat recovery process, and the hot water in the waste heat recovery box cannot be automatically replaced. The water temperature in the waste heat recovery box is too high, which easily leads to the failure to recover the heat in the serpentine pipe. For this reason, a new technical solution needs to be designed to solve it. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a waste heat recovery structure for an incinerator to solve the technical problems that the waste heat recovery structure of a current incinerator is relatively complex, scaling easily occurs in the waste heat recovery tank of the furnace body during the waste heat recovery process, and the hot water in the waste heat recovery box cannot be automatically replaced, and the water temperature in the waste heat recovery box is too high, which easily leads to the inability to recover the heat in the serpentine pipe.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: a waste heat recovery structure of an incinerator is designed, including a furnace body, a waste heat recovery tank is opened inside the furnace body, a return pipe is installed above one end of the furnace body, a liquid inlet pipe is installed below one end of the furnace body, a serpentine pipe is installed at the other end of the liquid inlet pipe and the return pipe, a circulating pump is arranged on the liquid inlet pipe, a waste heat recovery tank is installed outside the serpentine pipe, a first liquid level sensor is installed at one end of the waste heat recovery tank, a second liquid level sensor is installed at the other end of the waste heat recovery tank, a temperature sensor is installed above the second liquid level sensor, the bottom of the waste heat recovery tank is connected to a liquid pump through a liquid suction pipe, the top of the temperature sensor is connected to a first solenoid valve through a liquid infusion pipe, a cold water storage tank is installed at the other end of the first solenoid valve, a hot water storage tank is fixedly connected to the bottom end of the cold water storage tank, and a second solenoid valve is installed at the other end of the hot water storage tank.

[0006] Preferably, one end of the liquid return pipe is sealed and connected above one end of the furnace body and communicates with the interior of the waste heat recovery tank, and the other end of the liquid return pipe is sealed and connected to one end of the serpentine pipe.

[0007] Preferably, one end of the liquid inlet pipe is sealed and connected below one end of the furnace body and communicates with the interior of the waste heat recovery tank, and the other end of the liquid inlet pipe is sealed and connected to the other end of the serpentine pipe.

[0008] Preferably, the mounting ends of the first liquid level sensor, the second liquid level sensor and the temperature sensor are all fixedly connected to the outside of the waste heat recovery tank, and the detection ends of the first liquid level sensor, the second liquid level sensor and the temperature sensor are located inside the waste heat recovery tank.

[0009] Preferably, one end of the liquid extraction pipe is sealed and connected to the bottom of the waste heat recovery tank, and the other end of the liquid extraction pipe is connected to one side of the hot water storage tank through a liquid extraction pump and communicates with the interior of the hot water storage tank.

[0010] Preferably, one end of the infusion tube is sealed connected to the other end of the waste heat recovery tank, the other end of the infusion tube is sealed connected to one end of the first solenoid valve, the other end of the first solenoid valve is sealed connected to one side of the cold water storage tank and communicated with its interior.

[0011] Preferably, the first liquid level sensor, the second liquid level sensor, the temperature sensor, the liquid pump, the circulation pump, the first solenoid valve and the second solenoid valve are electrically connected to a controller via wires, respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model combines a waste heat recovery tank, a return pipe, a liquid inlet pipe, a serpentine pipe, a circulation pump, a waste heat recovery tank, a first liquid level sensor, a second liquid level sensor, a temperature sensor, a liquid extraction pipe, a liquid extraction pump, a liquid infusion pipe, a first solenoid valve, a cold water storage tank, a hot water storage tank, a second solenoid valve and a controller. When the heat in the waste heat boiler needs to be recovered, the fluorinated liquid in the waste heat recovery tank absorbs the heat in the waste heat boiler, and then the return pipe transports the fluorinated liquid that absorbs the heat to the inside of the serpentine pipe, and then the water in the waste heat recovery tank absorbs the heat of the fluorinated liquid in the serpentine pipe, and then the circulation pump extracts the fluorinated liquid in the serpentine pipe through the liquid inlet pipe and transports it to the inside of the waste heat recovery tank, so as to avoid scaling in the waste heat recovery tank during the waste heat recovery process of the furnace body, reduce the components of the waste heat boiler structure, and improve the protection effect of the waste heat boiler structure during use;

[0014] When the water temperature in the waste heat recovery tank reaches the detection value of the temperature sensor, the controller will control the liquid pump to extract the hot water in the waste heat recovery tank through the liquid pumping pipe and transport it to the inside of the hot water storage tank. When the liquid level in the waste heat recovery tank reaches the detection value of the first liquid level sensor, the controller will control the liquid pump to stop operating and control the first solenoid valve to open. At this time, the cold water in the cold water storage tank is transported to the inside of the waste heat recovery tank through the infusion pipe. When the liquid level in the waste heat recovery tank reaches the detection value of the second liquid level sensor, the controller will control the first solenoid valve to close, thereby realizing the replacement of the hot water in the waste heat recovery tank, avoiding the water temperature in the waste heat recovery tank being too high, resulting in the inability to recover the heat in the serpentine pipe, and improving the stability of the waste heat boiler structure when recovering waste heat from the incinerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is the control flow chart of the utility model;

[0018] In the figure: 1. furnace body; 11. waste heat recovery tank; 12. return liquid pipe; 13. liquid inlet pipe; 14. serpentine pipe; 15. circulation pump; 16. waste heat recovery tank; 17. first liquid level sensor; 18. second liquid level sensor; 19. temperature sensor; 20. liquid extraction pipe; 21. liquid extraction pump; 22. liquid infusion pipe; 23. first solenoid valve; 24. cold water storage tank; 25. hot water storage tank; 26. second solenoid valve; 27. controller. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Example 1: A waste heat recovery structure of an incinerator, see Figures 1 to 3 , including a furnace body 1, a waste heat recovery tank 11 is provided inside the furnace body 1, a return liquid pipe 12 is installed above one end of the furnace body 1, a liquid inlet pipe 13 is installed below one end of the furnace body 1, a serpentine pipe 14 is installed at the other end of the liquid inlet pipe 13 and the return liquid pipe 12, a circulating pump 15 is arranged on the liquid inlet pipe 13, one end of the return liquid pipe 12 is sealed and connected to the top of one end of the furnace body 1, and communicates with the inside of the waste heat recovery tank 11, the other end of the return liquid pipe 12 is sealed and connected to one end of the serpentine pipe 14, one end of the liquid inlet pipe 13 is sealed and connected to the bottom of one end of the furnace body 1, and communicates with the inside of the waste heat recovery tank 11, and the other end of the liquid inlet pipe 13 is sealed and connected to the serpentine pipe 14 On the other end, when the heat in the waste heat boiler needs to be recovered, the fluorinated liquid in the waste heat recovery tank 11 will absorb the heat in the waste heat boiler, and then the fluorinated liquid that absorbs the heat will be transported to the inside of the serpentine tube 14 by the return liquid pipe 12, and then the water in the waste heat recovery tank 16 will absorb the heat of the fluorinated liquid in the serpentine tube 14, and then the circulating pump 15 will extract the fluorinated liquid in the serpentine tube 14 through the liquid inlet pipe 13 and transport it to the inside of the waste heat recovery tank 11, so as to avoid the scaling phenomenon in the waste heat recovery tank 11 of the furnace body 1 during the waste heat recovery process, reduce the components of the waste heat boiler structure, and improve the protection effect of the waste heat boiler structure during use;

[0021] A waste heat recovery tank 16 is installed on the outside of the serpentine tube 14, a first liquid level sensor 17 is installed on one end of the waste heat recovery tank 16, a second liquid level sensor 18 is installed on the other end of the waste heat recovery tank 16, and a temperature sensor 19 is installed above the second liquid level sensor 18. The installation ends of the first liquid level sensor 17, the second liquid level sensor 18 and the temperature sensor 19 are all fixedly connected to the outside of the waste heat recovery tank 16, and the detection ends of the first liquid level sensor 17, the second liquid level sensor 18 and the temperature sensor 19 are located inside the waste heat recovery tank 16. The bottom of the heat recovery tank 16 is connected to a liquid pump 21 through a liquid pumping pipe 20, one end of the liquid pumping pipe 20 is sealed and connected to the bottom of the waste heat recovery tank 16, and the other end of the liquid pumping pipe 20 is connected to one side of the hot water storage tank 25 through the liquid pump 21 and communicates with the inside thereof, and the top of the temperature sensor 19 is connected to a first electromagnetic valve 23 through a liquid infusion pipe 22, one end of the liquid infusion pipe 22 is sealed and connected to the other end of the waste heat recovery tank 16, and the other end of the liquid infusion pipe 22 is sealed and connected to one end of the first electromagnetic valve 23, and the other end of the first electromagnetic valve 23 is sealed and connected to one side of the cold water storage tank 24, and The other end of the first solenoid valve 23 is connected to the inside, and a cold water storage tank 24 is installed at the other end. The bottom end of the cold water storage tank 24 is fixedly connected to a hot water storage tank 25. The other end of the hot water storage tank 25 is installed with a second solenoid valve 26. When the water temperature in the waste heat recovery tank 16 reaches the detection value of the temperature sensor 19, the controller 27 will control the liquid pump 21 to extract the hot water in the waste heat recovery tank 16 through the liquid pumping pipe 20 and transport it to the inside of the hot water storage tank 25. When the liquid level in the waste heat recovery tank 16 reaches the detection value of the first liquid level sensor 17, the controller 27 will The liquid pump 21 is controlled to stop operating, and the first solenoid valve 23 is controlled to open. At this time, the cold water in the cold water storage tank 24 is transported to the inside of the waste heat recovery tank 16 through the infusion pipe 22. When the liquid level in the waste heat recovery tank 16 reaches the detection value of the second liquid level sensor 18, the controller 27 will control the first solenoid valve 23 to close, thereby realizing the replacement of the hot water in the waste heat recovery tank 16, avoiding the water temperature in the waste heat recovery tank 16 being too high and resulting in the inability to recover the heat in the serpentine pipe 14, thereby improving the stability of the waste heat boiler structure when recovering the waste heat of the incinerator.

[0022] For details, see Figure 3 The first liquid level sensor 17, the second liquid level sensor 18, the temperature sensor 19, the liquid pump 21, the circulation pump 15, the first solenoid valve 23 and the second solenoid valve 26 are electrically connected to the controller 27 through wires.

[0023] It should be noted that the waste heat recovery tank 11 is filled with fluorinated liquid.

[0024] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0025] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A waste heat recovery structure of an incinerator, comprising a furnace body (1), wherein a waste heat recovery tank (11) is provided inside the furnace body (1), characterized in that: A liquid return pipe (12) is installed above one end of the furnace body (1), a liquid inlet pipe (13) is installed below one end of the furnace body (1), a serpentine pipe (14) is installed at the other end of the liquid inlet pipe (13) and the liquid return pipe (12), a circulating pump (15) is provided on the liquid inlet pipe (13), a waste heat recovery box (16) is installed outside the serpentine pipe (14), a first liquid level sensor (17) is installed at one end of the waste heat recovery box (16), and a second liquid level sensor (18) is installed at the other end of the waste heat recovery box (16), A temperature sensor (19) is installed above the second liquid level sensor (18); the bottom of the waste heat recovery tank (16) is connected to a liquid pump (21) via a liquid pumping pipe (20); the top of the temperature sensor (19) is connected to a first solenoid valve (23) via a liquid infusion pipe (22); a cold water storage tank (24) is installed at the other end of the first solenoid valve (23); a hot water storage tank (25) is fixedly connected to the bottom end of the cold water storage tank (24); and a second solenoid valve (26) is installed at the other end of the hot water storage tank (25).

2. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: One end of the liquid return pipe (12) is sealed and connected above one end of the furnace body (1) and communicates with the interior of the waste heat recovery tank (11); the other end of the liquid return pipe (12) is sealed and connected to one end of the serpentine pipe (14).

3. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: One end of the liquid inlet pipe (13) is sealed and connected below one end of the furnace body (1) and communicates with the interior of the waste heat recovery tank (11); the other end of the liquid inlet pipe (13) is sealed and connected to the other end of the serpentine pipe (14).

4. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: The mounting ends of the first liquid level sensor (17), the second liquid level sensor (18) and the temperature sensor (19) are all fixedly connected to the outside of the waste heat recovery tank (16), and the detection ends of the first liquid level sensor (17), the second liquid level sensor (18) and the temperature sensor (19) are located inside the waste heat recovery tank (16).

5. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: One end of the liquid extraction pipe (20) is sealed and connected to the bottom of the waste heat recovery tank (16), and the other end of the liquid extraction pipe (20) is connected to one side of the hot water storage tank (25) through a liquid extraction pump (21) and communicates with the interior of the hot water storage tank (25).

6. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: One end of the liquid infusion tube (22) is sealedly connected to the other end of the waste heat recovery tank (16), the other end of the liquid infusion tube (22) is sealedly connected to one end of the first solenoid valve (23), and the other end of the first solenoid valve (23) is sealedly connected to one side of the cold water storage tank (24) and communicates with the interior thereof.

7. The waste heat recovery structure of an incinerator according to claim 1, characterized in that: The first liquid level sensor (17), the second liquid level sensor (18), the temperature sensor (19), the liquid pump (21), the circulation pump (15), the first solenoid valve (23) and the second solenoid valve (26) are respectively electrically connected to a controller (27) via wires.

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