Boiler steam waste heat recycling device

Abstract

The utility model discloses a boiler steam waste heat recycling device, and relates to the technical field of steam waste heat recycling, the device comprises a heat preservation box and a steam heating mechanism, the upper end of the side wall of the heat preservation box is provided with a liquid inlet pipe, and the lower end of the side wall of the heat preservation box is provided with a water drainage pipe; the steam heating mechanism is arranged in the heat preservation box and used for heating water in the heat preservation box through high-temperature steam generated by the boiler, the high-temperature steam is sprayed into the water through the steam spraying pipe, the water is heated, the dissipated steam enters the condensation pipe, and the heat preservation box is heated through the condensation pipe. Due to the fact that water firstly enters the space defined by the heat preservation box, the fixing plate and the condensation pipe, steam in the condensation pipe can preheat the water, then the heated water is added into the boiler, energy needed by the boiler for heating the water is reduced, heat of the steam is fully utilized, energy waste is avoided, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam waste heat recovery and utilization, in particular to a boiler steam waste heat recovery and utilization device. Background Art

[0002] Hot water boiler is a boiler that produces hot water. It is a thermal energy device that uses the heat energy released by fuel combustion or other heat energy (such as electricity, solar energy, etc.) to heat water to a rated temperature. This series of boilers are widely used in the textile and clothing, printing and dyeing, food, chemical and other industries for ironing, drying, heat treatment, and hotels, schools, guesthouses, enterprises and institutions for steaming dishes, steaming rice, supplying boiling water or hot water, disinfection, etc.

[0003] After the water is heated, the hot water will be output to the designated equipment for heating or hot water supply, and then water will continue to be added to the boiler. At the same time, the boiler will produce a large amount of steam when heating the water. This steam will generally be discharged directly. Since the steam carries some heat, it causes energy waste. At the same time, the water added to the boiler has a lower temperature and requires energy to heat, which increases energy consumption and is inconvenient for users.

[0004] In view of the above problems, an improved boiler steam waste heat recovery and utilization device is now designed. Utility Model Content

[0005] The purpose of the utility model is to provide a boiler steam waste heat recovery device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A boiler steam waste heat recovery device comprises an insulation box and a steam heating mechanism, wherein a liquid inlet pipe for conveying water to the interior of the insulation box is installed at the upper end of the side wall of the insulation box, a drain pipe for adding water inside the insulation box to the boiler is installed at the lower end of the side wall of the insulation box, a water pump for discharging water through the drain pipe is installed on the drain pipe, and the water pump is installed on the side wall of the insulation box.

[0008] The steam heating mechanism is arranged inside the heat preservation box and is used to heat the water inside the heat preservation box by using the high-temperature steam generated by the boiler.

[0009] As a further solution of the utility model: the steam heating mechanism includes a collecting frame, which is horizontally arranged inside the heat preservation box, and the side wall of the collecting frame is horizontally installed with a support rod for supporting and fixing the collecting frame, and the end of the support rod away from the collecting frame is installed on the inner wall of the heat preservation box, and the lower end of the collecting frame is vertically installed with a plurality of jet pipes in a circular array, and the jet pipes are connected with the collecting frame, and the lower end of the jet pipe is close to the bottom of the heat preservation box, and an air supply pipe for conveying boiler steam to the inside of the collecting frame is installed on the side wall of the collecting frame, and the end of the air supply pipe away from the collecting frame passes through the side wall of the heat preservation box and is connected to the boiler steam output end, and an air supply pipe is installed on the air supply pipe for conveying steam to the inside of the heat preservation box through the air supply pipe, and the air supply pump is installed on the side wall of the heat preservation box, and a preheating component for preheating water using the heat of the dissipated steam is arranged inside the heat preservation box above the collecting frame.

[0010] As a further solution of the utility model: the preheating assembly includes a fixed plate, which is horizontally installed on the inner wall of the insulation box above the collection frame, and a plurality of condensing tubes corresponding to the jet pipes are installed on the upper end of the fixed plate, and the condensing tubes are located directly above the jet pipes. The upper ends of the condensing tubes pass through the insulation box and are arranged on the outside, and the fixed plate is arranged below the liquid inlet pipe. A water pipe for introducing water to the bottom of the insulation box is vertically installed at the center position of the fixed plate, and the upper end of the water pipe is close to the top of the insulation box, and the lower end of the water pipe is arranged below the collection frame, and a wiper assembly for scraping off condensed water inside the condenser is arranged inside the condenser.

[0011] As a further solution of the utility model: a heat conducting sheet for facilitating heat conduction is installed on the side wall of the condenser tube.

[0012] As a further solution of the utility model: the wiper assembly includes a rotating rod corresponding to the jet pipe one by one, the rotating rod is vertically arranged inside the jet pipe, the lower end of the side wall of the rotating rod is rotatably connected to a support plate for supporting the rotating rod, the support plate is installed on the inner wall of the jet pipe, the lower end of the rotating rod passes through the support plate and is equipped with a blade for rotating by using flowing steam, the upper end of the rotating rod passes through a collecting frame and is equipped with a scraper for scraping water droplets off the inner wall of the condenser, the scraper is arranged inside the condenser, and the scraper is tightly attached to the inner wall of the condenser.

[0013] As a further solution of the utility model: a rubber pad is installed on the side wall of the scraper to facilitate the scraper to cling to the inner wall of the condenser tube.

[0014] As a further solution of the utility model: a heat insulation cotton layer for heat insulation of the heat insulation box is installed on the side wall of the heat insulation box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model sprays high-temperature steam into water through an injection pipe to heat the water, and the dissipated steam enters the interior of the condenser. Since the water first enters the space surrounded by the heat preservation box, the fixing plate and the condenser, the steam inside the condenser will preheat the water, and then the heated water is added to the boiler, thereby reducing the energy required for the boiler to heat the water, making full use of the heat of the steam, avoiding energy waste, and reducing energy consumption.

[0017] The flowing steam drives the blades to rotate, and the blades drive the rotating rod and the scraper to rotate, so that the scraper cleans the water droplets on the inner wall of the condenser tube, which facilitates the heat transfer of the condenser tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the preheating component in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the steam heating mechanism in the utility model.

[0022] Among them: 1. Insulation box; 2. Water guide pipe; 3. Condenser; 4. Heat conduction plate; 5. Liquid inlet pipe; 6. Fixed plate; 7. Air pump; 8. Air pipe; 9. Jet pipe; 10. Water pump; 11. Drain pipe; 12. Blades; 13. Support plate; 14. Collecting frame; 15. Rotating rod; 16. Scraper; 17. Support rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-Figure 4In an embodiment of the utility model, a boiler steam waste heat recovery device includes an insulation box 1 and a steam heating mechanism. A liquid inlet pipe 5 for conveying water to the inside of the insulation box 1 is installed at the upper end of the side wall of the insulation box 1, and a drain pipe 11 for adding the water inside the insulation box 1 to the boiler is installed at the lower end of the side wall of the insulation box 1. A water pump 10 for discharging water through the drain pipe 11 is installed on the drain pipe 11, and the water pump 10 is installed on the side wall of the insulation box 1.

[0026] The steam heating mechanism is arranged inside the heat preservation box 1 and is used to heat the water inside the heat preservation box 1 using the high-temperature steam generated by the boiler.

[0027] The steam heating mechanism includes a collecting frame 14, which is horizontally arranged inside the heat preservation box 1. A support rod 17 for supporting and fixing the collecting frame 14 is horizontally installed on the side wall of the collecting frame 14. The end of the support rod 17 away from the collecting frame 14 is installed on the inner wall of the heat preservation box 1. A plurality of jet pipes 9 are vertically installed in a circular array at the lower end of the collecting frame 14. The jet pipes 9 are connected to the collecting frame 14. The lower end of the jet pipe 9 is close to the bottom of the heat preservation box 1. An air pipe 8 for conveying boiler steam to the inside of the collecting frame 14 is installed on the side wall of the collecting frame 14. The end of the air pipe 8 away from the collecting frame 14 passes through the side wall of the insulation box 1 and is connected to the boiler steam output end. An air pump 7 for conveying steam to the inside of the insulation box 1 through the air pipe 8 is installed on the air pipe 8. The air pump 7 is installed on the side wall of the insulation box 1. A preheating component for preheating water using the heat of the dissipated steam is arranged inside the insulation box 1 above the collecting frame 14.

[0028] When in use, start the air pump 7, which delivers high-temperature steam to the inside of the collecting frame 14 through the air pipe 8. The collecting frame 14 delivers the high-temperature steam to the inside of the jet pipe 9. The jet pipe 9 sprays the high-temperature steam into the water at the bottom of the insulation box 1 to heat the water.

[0029] The preheating assembly includes a fixed plate 6, which is horizontally installed on the inner wall of the insulation box 1 above the collection frame 14, and a plurality of condensing tubes 3 corresponding to the jet pipes 9 are installed on the upper end of the fixed plate 6, and the condensing tubes 3 are located directly above the jet pipes 9. The upper ends of the condensing tubes 3 pass through the insulation box 1 and are arranged on the outside. The fixed plate 6 is arranged below the liquid inlet pipe 5, and a water pipe 2 for introducing water to the bottom of the insulation box 1 is vertically installed at the center position of the fixed plate 6. The upper end of the water pipe 2 is close to the top of the insulation box 1, and the lower end of the water pipe 2 is arranged below the collection frame 14. The side walls of the condensing tubes 3 are installed with heat conducting plates 4 for facilitating heat conduction, and the interior of the condensing tubes 3 is provided with a wiper assembly for scraping off the condensed water inside the condensing tubes 3.

[0030] During use, water is added to the upper end of the fixed plate 6 through the liquid inlet pipe 5, and the water level will continue to rise. When the water level is higher than the upper end of the water pipe 2, the water flows into the bottom of the insulation box 1 through the water pipe 2. At the same time, the water will surround the condenser 3. After the steam sprayed from the jet pipe 9 heats the water at the bottom of the insulation box 1, the escaped steam rises and enters the interior of the condenser 3. The condenser 3 transfers the heat of the steam to the water above the fixed plate 6 to preheat the water.

[0031] Example 2

[0032] The wiper assembly includes a rotating rod 15 corresponding to the jet pipe 9 one by one, and the rotating rod 15 is vertically arranged inside the jet pipe 9. The lower end of the side wall of the rotating rod 15 is rotatably connected to a support plate 13 for supporting the rotating rod 15. The support plate 13 is installed on the inner wall of the jet pipe 9. The lower end of the rotating rod 15 passes through the support plate 13 and is installed with a blade 12 for rotating by using flowing steam. The upper end of the rotating rod 15 passes through a collecting frame 14 and is installed with a scraper 16 for scraping water droplets off the inner wall of the condenser 3. The scraper 16 is arranged inside the condenser 3, and the scraper 16 is tightly attached to the inner wall of the condenser 3.

[0033] When in use, the steam inside the condenser 3 will condense into water droplets on the inner wall of the condenser 3. When the jet pipe 9 sprays steam downward, the flowing steam will drive the blades 12 to rotate, the blades 12 will drive the rotating rod 15 to rotate, the rotating rod 15 will drive the scraper 16 to rotate, and the scraper 16 will scrape off the water droplets on the inner wall of the condenser 3, thereby improving the heat transfer efficiency of the condenser 3.

[0034] Working principle of a boiler steam waste heat recovery device:

[0035] When in use, start the air pump 7, which delivers high-temperature steam to the inside of the collecting frame 14 through the air pipe 8. The collecting frame 14 delivers the high-temperature steam to the inside of the jet pipe 9. The jet pipe 9 sprays the high-temperature steam into the water at the bottom of the insulation box 1 to heat the water.

[0036] At the same time, water is continuously added to the upper end of the fixed plate 6 through the liquid inlet pipe 5, and the water level will continue to rise. When the water level is higher than the upper end of the water guide pipe 2, the water flows into the bottom of the insulation box 1 through the water guide pipe 2, and the water always surrounds the condenser 3. After the steam ejected from the jet pipe 9 heats the water at the bottom of the insulation box 1, the escaped steam rises and enters the interior of the condenser 3. The condenser 3 transfers the heat of the steam to the water above the fixed plate 6, thereby preheating the water.

[0037] At the same time, the steam inside the condenser 3 will condense into water droplets on the inner wall of the condenser 3. When the jet pipe 9 sprays steam downward, the flowing steam will drive the blades 12 to rotate, the blades 12 will drive the rotating rod 15 to rotate, the rotating rod 15 will drive the scraper 16 to rotate, and the scraper 16 will scrape off the water droplets on the inner wall of the condenser 3, thereby improving the heat transfer efficiency of the condenser 3.

[0038] At the same time, the water pump 10 is started to transport the heated water in the heat preservation box 1 to the boiler through the drain pipe 11.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A boiler steam waste heat recovery device, comprising an insulation box (1) and a steam heating mechanism, wherein a liquid inlet pipe (5) for conveying water into the insulation box (1) is installed at the upper end of the side wall of the insulation box (1), characterized in that: A drain pipe (11) for adding water inside the heat preservation box (1) to the boiler is installed at the lower end of the side wall of the heat preservation box (1); a water pump (10) for draining water through the drain pipe (11) is installed on the drain pipe (11); the water pump (10) is installed on the side wall of the heat preservation box (1); The steam heating mechanism is arranged inside the heat preservation box (1) and is used to heat the water inside the heat preservation box (1) using the high-temperature steam generated by the boiler.

2. A boiler steam waste heat recovery device according to claim 1, characterized in that: The steam heating mechanism comprises a collecting frame (14), the collecting frame (14) being horizontally arranged inside the heat preservation box (1), a support rod (17) for supporting and fixing the collecting frame (14) being horizontally installed on the side wall of the collecting frame (14), the end of the support rod (17) away from the collecting frame (14) being installed on the inner wall of the heat preservation box (1), a plurality of jet pipes (9) being vertically installed in a circular array at the lower end of the collecting frame (14), the jet pipes (9) being connected to the collecting frame (14), the lower end of the jet pipes (9) being close to the bottom of the heat preservation box (1), An air delivery pipe (8) for delivering boiler steam to the interior of the collecting frame (14) is installed on the side wall of the collecting frame (14); an end of the air delivery pipe (8) away from the collecting frame (14) passes through the side wall of the heat preservation box (1) and is connected to the boiler steam output end; an air delivery pump (7) for delivering steam to the interior of the heat preservation box (1) through the air delivery pipe (8) is installed on the air delivery pipe (8); the air delivery pump (7) is installed on the side wall of the heat preservation box (1); a preheating component for preheating water using the heat of the dissipated steam is arranged inside the heat preservation box (1) above the collecting frame (14).

3. A boiler steam waste heat recovery device according to claim 2, characterized in that: The preheating assembly comprises a fixed plate (6), the fixed plate (6) being horizontally mounted on the inner wall of the heat preservation box (1) above the collecting frame (14), a plurality of condensing tubes (3) corresponding to the jet pipes (9) being mounted on the upper end of the fixed plate (6), the condensing tubes (3) being located directly above the jet pipes (9), the upper ends of the condensing tubes (3) passing through the heat preservation box (1) and being arranged on the outside, the fixed plate (6) being arranged below the liquid inlet pipe (5), a water guide tube (2) for introducing water into the bottom of the heat preservation box (1) being vertically mounted at the center of the fixed plate (6), the upper end of the water guide tube (2) being close to the top of the heat preservation box (1), the lower end of the water guide tube (2) being arranged below the collecting frame (14), and a water scraping assembly for scraping off condensed water inside the condensing tube (3) being arranged inside the condensing tube (3).

4. A boiler steam waste heat recovery device according to claim 3, characterized in that: A heat conducting sheet (4) is installed on the side wall of the condenser tube (3) to facilitate heat conduction.

5. The boiler steam waste heat recovery device according to claim 3 is characterized in that: The wiper assembly comprises a rotating rod (15) corresponding to the jet pipe (9) one by one, the rotating rod (15) being vertically arranged inside the jet pipe (9), the lower end of the side wall of the rotating rod (15) being rotatably connected to a support plate (13) for supporting the rotating rod (15), the support plate (13) being installed on the inner wall of the jet pipe (9), the lower end of the rotating rod (15) passing through the support plate (13) being installed with a blade (12) for rotating by utilizing flowing steam, the upper end of the rotating rod (15) passing through a collecting frame (14) being installed with a scraper (16) for scraping water droplets off the inner wall of the condenser (3), the scraper (16) being arranged inside the condenser (3), and the scraper (16) being closely attached to the inner wall of the condenser (3).

6. The boiler steam waste heat recovery device according to claim 5, characterized in that: A rubber pad is installed on the side wall of the scraper (16) to facilitate the scraper (16) to be in close contact with the inner wall of the condenser tube (3).

7. The boiler steam waste heat recovery and utilization device according to claim 1, characterized in that: A heat insulation cotton layer for heat insulation of the heat insulation box (1) is installed on the side wall of the heat insulation box (1).

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