CN220893045U - Heat energy recovery device of power plant - Google Patents

Abstract

The utility model discloses a power plant heat energy recovery device which comprises a power plant chimney and a heat energy recovery device matched with the power plant chimney, wherein the heat energy recovery device comprises a split water tower, a drain pipe, a water inlet pipe, a drainage pipe, a pump body, an annular water guide pipe, a spiral heat absorption pipe and a smoke guide and heat absorption cover, the split water tower is of a double-layer structure and is respectively provided with a hot water storage container and a cold water storage container from bottom to top, a partition plate is arranged between the hot water storage container and the cold water storage container, the drain pipe is arranged at the right lower corner of the hot water storage container, the water inlet pipe is arranged at the right upper corner of the cold water storage container, the lower end of the drainage pipe is positioned in the cold water storage container, and the upper end of the drainage pipe is connected with the pump body. The heat energy recovery device designed by the utility model is used for carrying out heat absorption treatment on the heat of the flue gas exhausted from the chimney of the thermal power station, can be used for efficiently recovering the heat in the flue gas and heating water, and can be used for greatly recovering and utilizing the heat of the flue gas.

Description

Heat energy recovery device of power plant

Technical Field

The utility model relates to the technical field of power plant heat energy recovery, in particular to a power plant heat energy recovery device.

Background

The power plant is generally composed of power generation equipment, a power generation plant, power transmission equipment, auxiliary facilities and the like, is used for meeting the requirements of power supply, is various in variety, and comprises a thermal power plant, a hydraulic power plant, a nuclear power plant, a solar power plant, a geothermal power plant, a wind power plant and a tidal power plant, wherein the thermal power plant belongs to a relatively basic and conventional power plant, is mainly combusted by using fossil fuels such as coal, fuel oil, natural gas and the like, and generates high-temperature and high-pressure steam through a boiler to drive a turbine generator to generate power.

However, the existing thermal power plant has the following problems in the process of burning by fuel: in the process of fuel combustion, a large amount of flue gas is generated, the flue gas contains larger heat, and the large amount of heat is easily lost in a mode of directly discharging the flue gas outside a power station chimney, so that a heat recovery device for a power plant is provided for solving the problems.

Disclosure of utility model

The utility model aims to solve the technical problem that a great amount of flue gas is generated in the fuel combustion process, and the flue gas contains great heat and is easy to cause great heat loss in a mode of directly discharging through a power station chimney.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

The utility model provides a heat recovery unit of power plant, includes the heat recovery unit that power plant's chimney and cooperation power plant's chimney used, heat recovery unit includes split type water tower, drain pipe, inlet tube, drainage tube, pump body, annular aqueduct, spiral heat pipe and smoke guide and absorb the heat exchanger, split type water tower is bilayer structure and from the bottom up be hot water storage container and cold water storage container respectively, be provided with the baffle between hot water storage container and the cold water storage container, the drain pipe is installed in the lower right corner of hot water storage container, the inlet tube is installed in the upper right corner of cold water storage container, the lower extreme of drainage tube is located cold water storage container and the upper end is connected with the pump body, the pump body is installed at the top of cold water storage container and the water outlet end is connected with annular aqueduct through the pipeline, annular aqueduct installs in the upper end of power plant's chimney, the middle part and spiral heat pipe are connected with spiral heat pipe, spiral heat pipe sets up perpendicularly in the inside of power plant's chimney and the lower extreme installs the drain pipe, the drain pipe is connected with hot water storage container, the smoke guide is equipped with the heat pipe and evenly overlaps in the upper and lower heat pipe connection of a plurality of power plant's chimney heat pipes.

As a preferable mode of the utility model, the spiral heat absorption pipe is made of metal materials and consists of a plurality of groups of metal pipes, the metal pipes are spirally wound, a smoke outlet is formed in the middle of the metal pipes, and the spiral heat absorption pipe is positioned in the middle area inside the chimney of the power plant.

As a preferable mode of the utility model, the smoke guiding and heat absorbing cover is of a two-section structure and comprises a first cover body and a second cover body, the upper end of the first cover body is connected with the spiral heat absorbing pipe, the lower end of the first cover body is connected with the second cover body, the lower end of the second cover body is fixed on the inner wall of the power plant chimney, a liquid guiding pipe is arranged on the surface of the second cover body and spirally wound on the second cover body, the upper end of the liquid guiding pipe is communicated with the spiral heat absorbing pipe, and the lower end of the liquid guiding pipe is connected with a return pipe which is also communicated with the spiral heat absorbing pipe.

As a preferable mode of the utility model, a plurality of groups of smoke exhaust holes are uniformly formed on the surface of the first cover body, and the plurality of groups of smoke exhaust holes are equidistantly distributed on the surface of the first cover body.

As a preferable mode of the utility model, a plurality of groups of heat collecting tiles are paved on the inner wall of the second cover body, the plurality of groups of heat collecting tiles are annularly and uniformly distributed on the inner wall of the second cover body, the heat collecting tiles are made of metal materials, two adjacent groups of heat collecting tiles are connected, and a heat collecting cavity is formed between the inner part of the heat collecting tiles and the second cover body.

As a preferable mode of the utility model, the caliber of the upper end of the smoke guiding and heat absorbing cover is smaller than that of the lower end, and the smoke guiding and heat absorbing cover is of an inverted funnel-shaped structure as a whole.

Compared with the prior art, the utility model has the beneficial effects that:

1. The utility model designs a device for efficiently recovering heat in flue gas of a thermal power station, which aims at carrying out heat absorption treatment on heat of flue gas discharged from a chimney of the thermal power station, can efficiently recover the heat in the flue gas and is used for heating water, and the purpose of recycling the heat of the flue gas is achieved greatly.

2. The heat energy recovery device designed by the utility model can efficiently recover and reuse heat in the flue gas mainly through the built-in spiral heat absorption pipe and the smoke guide and heat absorption cover arranged on the inner wall of the chimney.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a diagram of the smoke guiding and absorbing hood structure of the utility model;

FIG. 3 is a diagram of a heat collecting tile connection structure according to the present utility model.

In the figure, 1, a power plant chimney; 2. a drain pipe; 3. a water inlet pipe; 4. a drainage tube; 5. a pump body; 6. an annular water guide pipe; 7. spiral heat absorbing pipe; 8. a smoke guiding and absorbing cover; 9. a hot water storage container; 10. a cold water storage container; 11. a partition plate; 12. a liquid discharge pipe; 13. a smoke outlet; 14. a cover body I; 15. a second cover body; 16. a catheter; 17. a return pipe; 18. a smoke vent; 19. a heat collecting tile; 20. a heat collection cavity.

Detailed Description

The utility model is further described below in connection with specific embodiments.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a heat energy recovery device of power plant, including power plant's chimney 1 and the heat energy recovery device that cooperation power plant's chimney 1 used, heat energy recovery device includes split type water tower, drain pipe 2, inlet tube 3, drainage tube 4, pump body 5, annular aqueduct 6, spiral heat pipe 7 and smoke guiding and heat absorbing cover 8, split type water tower is bilayer structure and from bottom to top be hot water storage container 9 and cold water storage container 10 respectively, be provided with baffle 11 between hot water storage container 9 and the cold water storage container 10, drain pipe 2 installs in the lower right corner of hot water storage container 9, inlet tube 3 installs in the upper right corner of cold water storage container 10, also be equipped with corresponding pump body structure on the inlet tube 3 and be used for carrying out the drainage with water, the lower extreme of drainage tube 4 is located cold water storage container 10 and the upper end is connected with pump body 5, the top and the water outlet end of pump body 5 is connected with annular aqueduct 6 through the pipeline, annular aqueduct 6 is installed in the upper end of power plant's chimney 1, the middle part and spiral water pipe 7 are connected with spiral heat pipe 7, spiral heat absorbing 7 sets of heat absorbing cover 12 are installed in the inside of power plant's chimney 1 and lower extreme 12 and are equipped with the heat absorbing cover 8 is connected with the heat pipe 8 and heat absorbing cover is connected with the heat pipe 8 is equipped with the heat pipe 8 is connected with the inner wall of a plurality of smoke pipe 8.

As shown in fig. 1: the spiral heat absorption pipe 7 adopts metal material and comprises a plurality of groups of metal pipes, and the design can slow down the velocity of flow of rivers for spiral structure, and better heat absorption of being convenient for is formed with exhaust port 13 in the middle part in a plurality of groups of metal pipes being spiral winding, and spiral heat absorption pipe 7 is located the inside middle part region of power plant's chimney 1, guarantees the normal outer row of flue gas through exhaust port 13.

As shown in fig. 2: the smoke guide and heat absorption cover 8 is of a two-section structure and comprises a cover body I14 and a cover body II 15, the upper end of the cover body I14 is connected with the spiral heat absorption pipe 7, the lower end of the cover body II 15 is connected with the cover body II 15, the lower end of the cover body II 15 is fixed on the inner wall of the power plant chimney 1, a liquid guide pipe 16 is arranged on the surface of the cover body II 15, the liquid guide pipe 16 is spirally wound on the cover body II 15, the upper end of the liquid guide pipe 16 is communicated with the spiral heat absorption pipe 7, the lower end of the liquid guide pipe 16 is connected with a return pipe 17, the return pipe 17 is also communicated with the spiral heat absorption pipe 7, the thickness of the cover body I14 and the cover body II 15 is not excessively large, the thickness is controlled to be between 1cm and 1.5cm, and the liquid guide pipe 16 is convenient for absorbing heat.

As shown in fig. 2: a plurality of groups of smoke exhaust holes 18 are uniformly formed in the surface of the first cover body 14, and the plurality of groups of smoke exhaust holes 18 are equidistantly distributed on the surface of the first cover body 14.

As shown in fig. 2 and 3: a plurality of groups of heat collecting tiles 19 are paved on the inner wall of the second cover body 15, the heat collecting tiles 19 are annularly and uniformly distributed on the inner wall of the second cover body 15, the heat collecting tiles 19 are made of metal materials, two adjacent groups of heat collecting tiles 19 are connected, a heat collecting cavity 20 is formed between the inner part of the heat collecting tiles 19 and the second cover body 15, heat in flue gas can be absorbed and stored through the heat collecting tiles 19, and water flowing through a liquid guide tube 16 on the outer side of the flue gas is subjected to heat absorption treatment, so that the heat absorption effect is guaranteed.

Specifically, the upper end diameter of the smoke guiding and absorbing cover 8 is smaller than the lower end diameter and is of an inverted funnel-shaped structure integrally, so that the smoke is conveniently concentrated towards the middle area in the design mode, and the smoke flowing through the smoke is subjected to heat absorption treatment in the process of concentrating towards the middle area.

When in use: the utility model guides cold water in the cold water storage container 10 into the annular water guide pipe 6 through the pump body 5, guides the cold water into the spiral heat absorption pipe 7 through the annular water guide pipe 6, the spiral heat absorption pipe 7 guides the cold water downwards in a spiral manner, absorbs part of heat in smoke and heats the cold water in the downwards guiding process, in addition, smoke at the edge is concentrated to the middle part through the smoke guiding heat absorption cover 8, in the process that the smoke flows along the inner wall of the cover body II 15, the heat in the smoke can be absorbed and stored through the heat collecting tiles 19 to absorb heat and cooperate with water flowing in the liquid guide pipe 16 at the outer side, the absorbed water flows back into the spiral heat absorption pipe 7, the smoke after heat absorption is discharged outwards along the smoke discharging hole 18 on the surface of the cover body I14, and the heated water flows into the hot water storage container 9 through the liquid discharging pipe 12 for storage, so that the purpose of heat utilization is achieved.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides a heat recovery unit of power plant, includes power plant's chimney (1) and cooperation power plant's chimney (1) heat recovery unit that uses, its characterized in that: the heat energy recovery device comprises a split water tower, a water drain pipe (2), a water inlet pipe (3), a drainage pipe (4), a pump body (5), an annular water guide pipe (6), a spiral heat absorption pipe (7) and a smoke guide heat absorption cover (8), wherein the split water tower is of a double-layer structure and is respectively a hot water storage container (9) and a cold water storage container (10) from bottom to top, a partition plate (11) is arranged between the hot water storage container (9) and the cold water storage container (10), the water drain pipe (2) is arranged at the right lower corner of the hot water storage container (9), the water inlet pipe (3) is arranged at the right upper corner of the cold water storage container (10), the lower end of the drainage pipe (4) is positioned in the cold water storage container (10) and is connected with the pump body (5), the top of the pump body (5) is connected with the annular water guide pipe (6) through a pipeline, the annular water guide pipe (6) is arranged at the upper end of the power plant (1), the middle part of the annular water guide pipe (6) is connected with the spiral heat absorption pipe (7) and is connected with the heat absorption pipe (12) at the inner side of the water drain pipe (12), the smoke guiding and heat absorbing cover (8) is divided into a plurality of groups and uniformly sleeved on the spiral heat absorbing pipe (7), and the lower end of the smoke guiding and heat absorbing cover (8) is connected with the inner wall of the power plant chimney (1).

2. A plant heat energy recovery device according to claim 1, characterized in that: the spiral heat absorption pipe (7) is made of metal materials and consists of a plurality of groups of metal pipes, the metal pipes are spirally wound, a smoke outlet (13) is formed in the middle of the metal pipes, and the spiral heat absorption pipe (7) is located in the middle area inside the power plant chimney (1).

3. A plant heat energy recovery device according to claim 2, characterized in that: the smoke guide and heat absorption cover (8) is of a two-section structure and comprises a cover body I (14) and a cover body II (15), the upper end of the cover body I (14) is connected with the spiral heat absorption pipe (7) and the lower end of the cover body II (15) is connected with the cover body II, the lower end of the cover body II (15) is fixed on the inner wall of the power plant chimney (1), a liquid guide pipe (16) is arranged on the surface of the cover body II (15), the liquid guide pipe (16) is spirally wound on the cover body II (15), the upper end of the liquid guide pipe (16) is connected with the spiral heat absorption pipe (7) and the lower end of the liquid guide pipe is connected with a return pipe (17), and the return pipe (17) is also connected with the spiral heat absorption pipe (7).

4. A plant heat energy recovery device according to claim 3, characterized in that: a plurality of groups of smoke exhaust holes (18) are uniformly formed in the surface of the first cover body (14), and the smoke exhaust holes (18) are equidistantly distributed on the surface of the first cover body (14).

5. A plant heat energy recovery device according to claim 3, characterized in that: a plurality of groups of heat collecting tiles (19) are paved on the inner wall of the second cover body (15), the heat collecting tiles (19) are annularly and uniformly distributed on the inner wall of the second cover body (15), the heat collecting tiles (19) are made of metal materials, two adjacent groups of heat collecting tiles (19) are connected, and a heat collecting cavity (20) is formed between the inner part of the heat collecting tiles (19) and the second cover body (15).

6. A plant heat energy recovery device according to claim 3, characterized in that: the upper port diameter of the smoke guiding and absorbing cover (8) is smaller than the lower port diameter and is of an inverted funnel-shaped structure integrally.