CN214891303U

CN214891303U - Waste heat recovery device of thermal power plant

Info

Publication number: CN214891303U
Application number: CN202121245517.9U
Authority: CN
Inventors: 王静红; 徐文; 李金彬
Original assignee: Qingdao Kaiyuan Thermal Design And Research Institute Co ltd
Current assignee: Qingdao Kaiyuan Thermal Design And Research Institute Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-11-26
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a waste heat recovery device of steam power plant, include bottom plate, support column, connecting pipe, preheat subassembly and heat exchange assemblies, the support column symmetry is located on the bottom plate, the connecting pipe is located on the support column of one side, preheat the subassembly and locate the one end that the support column was kept away from to the connecting pipe, heat exchange assemblies one end is connected on preheating the subassembly and the other end locates the support column of keeping away from the connecting pipe. The utility model belongs to the technical field of waste heat recovery, specifically indicate a waste heat recovery device of steam power plant.

Description

Waste heat recovery device of thermal power plant

Technical Field

The utility model belongs to the technical field of waste heat recovery, specifically indicate a waste heat recovery device of steam power plant.

Background

The heat supply mode of the thermal power plant includes two main types of distributed heat supply and centralized heat supply. The heat supply is dispersed on the spot at the user, and only a small boiler (the heat efficiency is about 50%) with low parameter and low heat efficiency can be adopted due to the limitation of the heat supply scale. However, the heat supply of the thermal power plant forms regional centralized heat supply. Because the heat supply scale is big, can adopt the efficient large-scale boiler of high parameter (the thermal efficiency is more than 85%), thereby make the energy utilization benefit obtain great improvement, saved the fuel, in the aspect of environmental pollution, because the central heating of steam power plant and use the coal volume to reduce, the blow off volume also reduces, the trouble of fortune coal ash removal in the urban area has also reduced, and large capacity boiler has high-efficient dust remover equipment and high chimney, make the environmental pollution degree very reduce, but the heat that current steam power plant produced is comparatively abundant, it is lower to the heat utilization efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a through let in the heat transfer chamber with the heat that produces, utilize heat exchange assembly to further the even heating to the water after preheating, then preheat cold water with the hot-air reutilization after the heat transfer for thermal exchange is more abundant, thereby improves the heat recovery plant waste heat recovery device of utilization ratio.

In order to realize the above functions, the utility model discloses the technical scheme who takes as follows: the waste heat recovery device for the thermal power plant comprises a bottom plate, support columns, connecting pipes, a preheating assembly and a heat exchange assembly, wherein the support columns are symmetrically arranged on the bottom plate, the connecting pipes are arranged on the support columns on one side, the preheating assembly is arranged at one end, far away from the support columns, of the connecting pipes, one end of the heat exchange assembly is connected to the preheating assembly, and the other end of the heat exchange assembly is arranged on the support columns, far away from the connecting pipes; the heat exchange assembly comprises a driving motor, a heat exchange chamber, an air inlet pipe, a shunting chamber, air inlet holes, an exchange chamber, a collecting chamber and a shunting pipe, the driving motor is arranged on a support column far away from a connecting pipe, the heat exchange chamber is connected with the preheating assembly, the air inlet pipe is symmetrically arranged at the upper end and the lower end of the heat exchange chamber, the shunting chamber is arranged in the heat exchange chamber, the air inlet holes are uniformly arranged on the shunting chamber, the exchange chamber can be rotatably arranged in the heat exchange chamber and is connected with the output end of the driving motor, the collecting chamber is arranged in the exchange chamber, one end of the shunting pipe is connected with the collecting chamber, the other end of the shunting pipe penetrates through the exchange chamber and is arranged in the shunting chamber, preheated water is introduced into the exchange chamber, high-temperature gas enters the heat exchange chamber through the air inlet pipe, and after passing through the air inlet holes on the shunting chamber, the high-temperature gas uniformly enters the shunting chamber, flows into the shunting pipe through the shunting pipe, the contact area of increase high-temperature gas and water to improve the heat exchange rate, start driving motor simultaneously, driving motor takes the exchange room to rotate, makes the water of exchange room evenly carry out the heat exchange with the high-temperature gas in the shunt pipe at the pivoted in-process, thereby further improves the heat exchange rate, and the gas after the exchange gets into and collects the intracavity, gets into in the subassembly that preheats again and carries out preheating treatment to cold water.

Further, the preheating assembly comprises a preheating chamber, a flow guide pipe, a water feeding pipe, a water pump, a water pumping pipe and a water inlet pipe, one end of the preheating chamber is connected to the heat exchange chamber, the other end of the preheating chamber is connected to a connecting pipe, the flow guide pipe is uniformly arranged in the preheating chamber, one end of the flow guide pipe is connected to the collecting cavity, the other end of the flow guide pipe penetrates through the preheating chamber and is arranged on one side, close to the support column, of the preheating chamber, the water pump is connected to the connecting pipe, one end of the water pumping pipe is connected to the water pump, the other end of the water pumping pipe penetrates through the heat exchange chamber and is connected to the exchange chamber, cold water is introduced into the preheating chamber through the water feeding pipe, gas after heat exchange enters the flow guide pipe in the preheating chamber through the collecting cavity, and secondary heat exchange is carried out with cold water in the preheating chamber through the flow guide pipe in the contact process, the heat in the high-temperature gas is utilized to the maximum extent.

Furthermore, a water outlet is formed in the lower ends of the exchange chamber and the heat exchange chamber, which are close to the side face of the connecting pipe, and a sealing plug is arranged on the water outlet, so that the heated hot water can be conveniently discharged out of the heat exchange chamber.

Furthermore, a dust removal plate is arranged at the joint of the air inlet pipe and the heat exchange chamber, so that smoke and dust of high-temperature gas can be conveniently removed, clean gas is discharged out of the heat exchange chamber after heat exchange, and the national sustainable development is met.

The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a waste heat recovery device of thermal power plant, through letting in the water after preheating in the exchange chamber, high-temperature gas gets into in the heat transfer chamber through the intake pipe, after the inlet port on the flow distribution chamber, make high-temperature gas evenly get into in the flow distribution chamber, gas flows into in the flow distribution pipe through the flow distribution chamber, through the setting of shunt tubes, increase the area of contact of high-temperature gas and water, thereby improve the heat exchange rate, start driving motor simultaneously, driving motor drives the exchange chamber and rotates, make the water of exchange chamber evenly carry out the heat exchange with the high-temperature gas in the shunt tubes in the process of rotating, thereby further improve the heat exchange rate, gas after the exchange gets into and collects the intracavity, reentrant preheating assembly carries out the preheating treatment to cold water, through letting in the cold water pipe let in preheating chamber, gas after the heat exchange gets into in the draft tube in preheating chamber through collecting the chamber, carry out the secondary heat exchange through draft tube and the cold water in preheating chamber in the in-process of contact, make the heat maximize among the high-temperature gas obtain utilizing, through the setting of delivery port and shutoff stopper, be convenient for discharge the hot water heat transfer room after the intensification in, be equipped with the dust removal board through intake pipe and heat transfer room junction, be convenient for detach high-temperature gas's smoke and dust, make clean gas discharge after the heat exchange in the heat transfer room, accord with national sustainable development.

Drawings

FIG. 1 is a schematic view of the overall structure of a waste heat recovery device of a thermal power plant of the present invention;

fig. 2 is a left side view of the heat recovery device of the present invention.

The device comprises a base plate 1, a base plate 2, support columns 3, connecting pipes 4, a preheating assembly 5, a heat exchange assembly 6, a driving motor 7, a heat exchange chamber 8, an air inlet pipe 9, a flow dividing chamber 10, an air inlet hole 11, an exchange chamber 12, a collecting cavity 13, flow dividing pipes 14, a preheating chamber 15, flow dividing pipes 16, a water conveying pipe 17, a water pump 18, a water pumping pipe 19, a water inlet pipe 20, a water outlet 21, a sealing plug 22 and a dust removing plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model relates to a waste heat recovery device of a thermal power plant, which comprises a bottom plate 1, support columns 2, connecting pipes 3, a preheating component 4 and a heat exchange component 5, wherein the support columns 2 are symmetrically arranged on the bottom plate 1, the connecting pipes 3 are arranged on the support columns 2 on one side, the preheating component 4 is arranged at one end of the connecting pipes 3 far away from the support columns 2, one end of the heat exchange component 5 is connected to the preheating component 4, and the other end of the heat exchange component is arranged on the support columns 2 far away from the connecting pipes 3; heat exchange assembly 5 includes driving motor 6, heat transfer chamber 7, intake pipe 8, flow distribution chamber 9, inlet port 10, exchange room 11, collects chamber 12 and shunt tubes 13, driving motor 6 locates on keeping away from connecting pipe 3's support column 2, heat transfer chamber 7 is connected in preheating assembly 4, the upper end and the lower extreme of heat transfer chamber 7 are located to intake pipe 8 symmetry, flow distribution chamber 9 is located in heat transfer chamber 7, inlet port 10 evenly locates on flow distribution chamber 9, exchange chamber 11 is rotatable locate in heat transfer chamber 7 and connect in driving motor 6 output, collect chamber 12 and locate in exchange chamber 11, shunt tubes 13 one end is collected and is connected in chamber 12 and the other end runs through exchange chamber 11 and locate in flow distribution chamber 9.

Preheating assembly 4 includes preheating chamber 14, honeycomb duct 15, delivery pipe 16, water pump 17, drinking-water pipe 18 and inlet tube 19, preheating chamber 14 one end is connected in heat transfer chamber 7 and the other end and is connected in connecting pipe 3, honeycomb duct 15 evenly locates in preheating chamber 14, honeycomb duct 15 one end is connected in compiling chamber 12 and the other end runs through preheating chamber 14 and locates one side that preheating chamber 14 is close to support column 2, delivery pipe 16 connects in preheating chamber 14, water pump 17 is located on connecting

pipe

3, 18 one end of drinking-water pipe is connected in water pump 17 and the other end and runs through connecting pipe 3 and connect in

preheating chamber

14, 19 one end of inlet tube are connected in water pump 17 and the other end and run through heat transfer chamber 7 and connect in exchange chamber 11.

The lower ends of the exchange chamber 11 and the heat exchange chamber 7 close to the side surface of the connecting pipe 3 are provided with a water outlet 20, and a sealing plug 21 is arranged on the water outlet 20.

And a dust removing plate 22 is arranged at the joint of the air inlet pipe 8 and the heat exchange chamber 7.

When the heat exchanger is used specifically, preheated water is introduced into the exchange chamber 11, high-temperature gas enters the heat exchange chamber 7 through the air inlet pipe 8, the high-temperature gas uniformly enters the diversion chamber 9 after passing through the air inlet holes 10 in the diversion chamber 9, the gas flows into the diversion pipe 13 through the diversion chamber 9, the driving motor 6 is started at the same time, the driving motor 6 drives the exchange chamber 11 to rotate, the water in the exchange chamber 11 uniformly exchanges heat with the high-temperature gas in the diversion pipe 13 in the rotating process, the heat exchange rate is further improved, the exchanged gas enters the collecting cavity 12, enters the diversion pipe 15 in the preheating chamber 14 through the collecting cavity 12, secondary heat exchange is carried out in the contact process of cold water in the preheating chamber 14 through the diversion pipe 15, and the heat in the high-temperature gas is utilized to the maximum.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a waste heat recovery device of steam power plant which characterized in that: the preheating device comprises a bottom plate, support columns, connecting pipes, a preheating assembly and a heat exchange assembly, wherein the support columns are symmetrically arranged on the bottom plate, the connecting pipes are arranged on the support columns on one side, the preheating assembly is arranged at one end, far away from the support columns, of the connecting pipes, one end of the heat exchange assembly is connected to the preheating assembly, and the other end of the heat exchange assembly is arranged on the support columns, far away from the connecting pipes; the heat exchange assembly comprises a driving motor, a heat exchange chamber, an air inlet pipe, a shunting chamber, an air inlet hole, an exchange chamber, a collecting cavity and a shunting pipe, the driving motor is arranged on a support column far away from a connecting pipe, the heat exchange chamber is connected to the preheating assembly, the air inlet pipe is symmetrically arranged at the upper end and the lower end of the heat exchange chamber, the shunting chamber is arranged in the heat exchange chamber, the air inlet hole is uniformly arranged on the shunting chamber, the exchange chamber is rotatably arranged in the heat exchange chamber and connected to the output end of the driving motor, the collecting cavity is arranged in the exchange chamber, and one end of the shunting pipe is connected to the collecting cavity and the other end of the shunting pipe penetrates through the exchange chamber and is arranged in the shunting chamber.

2. The heat recovery device of claim 1, wherein: the subassembly of preheating includes preheating chamber, honeycomb duct, flow pipe, water pump, drinking-water pipe and inlet tube, preheating chamber one end is connected in heat transfer room and the other end and is connected in the connecting pipe, the honeycomb duct is evenly located in preheating chamber, honeycomb duct one end is connected in compiling chamber and the other end and runs through the preheating chamber and locate one side that the preheating chamber is close to the support column, flow pipe connects in preheating chamber, the water pump is located on the connecting pipe, drinking-water pipe one end is connected in water pump and the other end and runs through the connecting pipe and connect in preheating chamber, inlet tube one end is connected in water pump and the other end and runs through the heat transfer room and connect in the exchange chamber.

3. The heat recovery device of claim 2, wherein: the lower ends of the exchange chamber and the heat exchange chamber, which are close to the side face of the connecting pipe, are provided with water outlets, and the water outlets are provided with sealing plugs.

4. The heat recovery device of claim 3, wherein: and a dust removing plate is arranged at the joint of the air inlet pipe and the heat exchange chamber.