CN216811809U

CN216811809U - Steam turbine exhaust heat recovery device of thermal power factory

Info

Publication number: CN216811809U
Application number: CN202220422430.2U
Authority: CN
Inventors: 郑彦俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-24
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a thermal power plant steam turbine exhaust heat recovery device, which comprises a heat preservation cabin, wherein an air inlet pipe is fixedly arranged at the lower end in the heat preservation cabin, a plurality of supports are uniformly and fixedly arranged on the periphery of the outer side surface of the upper end of the air inlet pipe, a shielding cover is fixedly arranged at the upper ends of the supports, a heat exchange mechanism is fixedly arranged at the upper end in the heat preservation cabin, the heat exchange mechanism comprises a heat exchange cabin, a heat conduction copper pipe, a liquid inlet pipe and a liquid outlet pipe, the heat exchange cabin is fixedly arranged at the upper end in the heat preservation cabin, the heat conduction copper pipe is uniformly and fixedly arranged in the heat exchange cabin, and the liquid inlet pipe is fixedly arranged at the lower end of one side of the surface of the heat exchange cabin. The steam condensing and heat-releasing device has a good use effect, and condensed water can quickly fall off after steam is condensed and released, so that the condensed water does not participate in heat exchange, and unnecessary waste caused by repeated heating due to too low temperature of the circulating condensed water can be effectively prevented.

Description

Steam turbine exhaust heat recovery device of thermal power factory

Technical Field

The utility model relates to the technical field of heat recovery devices, in particular to a steam exhaust heat recovery device of a steam turbine of a thermal power plant.

Background

One of the existing power generation modes is thermal power generation, steam is generated by burning a large amount of thermal power to drive a steam turbine to rotate to generate electric power, the steam after doing work in the process needs to be condensed, then the condensed water circularly enters a boiler for use, and a large amount of heat is released in the condensation of the steam, so that the heat needs to be recovered, the prior heat recovery device can absorb the heat in the condensed water after recovering the heat released during the condensation of the steam, and the part of the condensed water needs to be refluxed and reheated to generate the steam for power generation, because the recovered heat is lost during heat transfer, if the heat in the condensed water is absorbed, the part of the condensed water is heated again to generate steam, so relapse can waste more energy on the contrary, lack one kind at present and can not carry out endothermic heat transfer device to the comdenstion water after the steam condensation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for recovering the exhaust steam heat of a steam turbine of a thermal power plant, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a thermal power factory steam turbine steam exhaust heat recovery unit, includes the heat preservation storehouse, the fixed intake pipe that is provided with of the inside lower extreme in heat preservation storehouse, intake pipe upper end lateral surface evenly fixes all around and is provided with a plurality of supports, the fixed cover that hides that is provided with in support upper end, the fixed heat exchange mechanism that is provided with in the inside upper end in heat preservation storehouse, heat exchange mechanism is including heat transfer storehouse, heat conduction copper pipe, feed liquor pipe, drain pipe, the fixed heat transfer storehouse that is provided with in the inside upper end in heat preservation storehouse, the inside even fixed a plurality of heat conduction copper pipes that are provided with in heat transfer storehouse, the fixed feed liquor pipe that is provided with of heat transfer storehouse surface one side lower extreme, the fixed drain pipe that is provided with in one side upper end that the feed liquor pipe was kept away from on heat transfer storehouse surface, the feed liquor pipe all alternates with the drain pipe and extends to the heat preservation storehouse outside through the heat preservation storehouse.

Preferably, a connecting flange is fixedly arranged at one end of the liquid inlet pipe and one end of the liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe can be conveniently connected with other pipelines externally through the connecting flange.

Preferably, the lower end of the heat preservation bin is fixedly provided with a return pipe, the return pipe is sleeved on the outer side surface of the air inlet pipe, and condensed water can conveniently flow back into the boiler through the return pipe.

Preferably, a first guide block is fixedly arranged between the inside of the heat preservation bin and the heat exchange bin, and steam can be guided into the heat conduction copper pipe through the first guide block.

Preferably, the two sides of the lower end in the heat preservation bin are fixedly provided with second guide blocks, and condensed water can be conveniently guided into the return pipe through the second guide blocks.

Preferably, the surface of the outer side of the shielding cover is uniformly and fixedly provided with a plurality of through grooves, steam can conveniently pass through the through grooves, and dripping water drops are not easy to pass through the through grooves.

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

1. according to the utility model, steam to be subjected to heat exchange is introduced, then the steam rises to enter the heat conduction copper pipe, at the moment, a heat exchange medium can be injected into the heat exchange bin through the liquid inlet pipe, and then the steam flows out through the liquid outlet pipe, so that heat exchange can be carried out through the heat exchange copper pipe, and after the steam is condensed and released in the heat conduction copper pipe, condensed water can quickly fall down and does not participate in heat exchange, so that repeated heating caused by too low temperature of the circulating condensed water can be effectively prevented, and unnecessary waste is caused.

2. When the steam condensation device is used, the whole structure is simple, only necessary heat released during steam condensation is absorbed, the heat of condensed water is not excessively exchanged, and a complex control structure is not needed in the whole process.

Drawings

FIG. 1 is a schematic view of the overall structure of a steam turbine exhaust heat recovery device of a thermal power plant according to the present invention;

FIG. 2 is a bottom view of a heat recovery unit of steam turbine exhaust heat of a thermal power plant according to the present invention;

fig. 3 is an overall structural view of a shield cover of a steam turbine exhaust heat recovery device of a thermal power plant according to the present invention.

In the figure: 1. a heat preservation bin; 2. an air inlet pipe; 3. a support; 4. a shield cover; 5. a heat exchange bin; 6. a heat conducting copper pipe; 7. a liquid inlet pipe; 8. a liquid outlet pipe; 9. a connecting flange; 10. a return pipe; 11. a first guide block; 12. a second guide block; 13. a through groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a thermal power plant steam turbine exhaust heat recovery device comprises a heat preservation bin 1, an air inlet pipe 2 is fixedly arranged at the lower end inside the heat preservation bin 1, a plurality of brackets 3 are uniformly and fixedly arranged on the periphery of the outer side surface of the upper end of the air inlet pipe 2, a shielding cover 4 is fixedly arranged on the upper end of each bracket 3, the upper end in the heat preservation bin 1 is fixedly provided with a heat exchange mechanism, the heat exchange mechanism comprises a heat exchange bin 5, a heat conduction copper pipe 6, a liquid inlet pipe 7 and a liquid outlet pipe 8, a heat exchange bin 5 is fixedly arranged at the upper end in the heat preservation bin 1, a plurality of heat conduction copper pipes 6 are uniformly and fixedly arranged in the heat exchange bin 5, a liquid inlet pipe 7 is fixedly arranged at the lower end of one side of the surface of the heat exchange bin 5, a liquid outlet pipe 8 is fixedly arranged at the upper end of one side of the surface of the heat exchange bin 5 far away from the liquid inlet pipe 7, the liquid inlet pipe 7 and the liquid outlet pipe 8 are inserted through the heat preservation bin 1 and extend to the outer side of the heat preservation bin 1.

Feed

liquor pipe

7 and 8 one ends of drain pipe are fixed and are provided with flange 9, can conveniently be with

feed liquor pipe

7 and 8 external other pipelines of drain pipe through flange 9.

The lower end of the heat preservation bin 1 is fixedly provided with a return pipe 10, the return pipe 10 is sleeved on the outer side surface of the air inlet pipe 2, and condensed water can conveniently flow back into the boiler through the return pipe 10.

A first guide block 11 is fixedly arranged between the interior of the heat preservation bin 1 and the heat exchange bin 5, and steam can be guided into the heat conduction copper pipe 6 through the first guide block 11.

And second guide blocks 12 are fixedly arranged on two sides of the lower end in the heat preservation bin 1, and condensed water can be conveniently guided into the return pipe 10 through the second guide blocks 12.

The surface of the outer side of the shielding cover 4 is uniformly and fixedly provided with a plurality of through grooves 13, steam can conveniently pass through the through grooves 13, and dripping water drops are not easy to pass through.

The working principle is as follows: let in the steam that needs carry out the heat transfer through intake pipe 2 during the operative installations, steam rises afterwards and enters into heat conduction copper pipe 6 inside, can be 7 to the inside heat transfer medium that pours into of heat transfer storehouse through feed liquor pipe this moment, then flow through drain pipe 8, so can carry out thermal exchange through the heat transfer copper pipe, and after steam is exothermic in the inside condensation of heat conduction copper pipe 6, the comdenstion water can drop fast and no longer participate in the heat transfer, thereby can effectively prevent to carry out the circulating comdenstion water temperature and hang down and lead to the reheat excessively, cause unnecessary extravagant, and overall structure is simple when the device uses, the heat of only absorbing necessary steam condensation time giving off, and can not too much get for the heat of comdenstion water, and whole process need not complicated control structure, it is comparatively convenient to use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a thermal power factory steam turbine steam extraction heat recovery unit, includes heat preservation storehouse (1), its characterized in that: an air inlet pipe (2) is fixedly arranged at the lower end in the heat preservation bin (1), a plurality of supports (3) are uniformly and fixedly arranged on the periphery of the outer side surface of the upper end of the air inlet pipe (2), the upper end of the bracket (3) is fixedly provided with a shielding cover (4), the upper end inside the heat preservation bin (1) is fixedly provided with a heat exchange mechanism, the heat exchange mechanism comprises a heat exchange bin (5), a heat conduction copper pipe (6), a liquid inlet pipe (7) and a liquid outlet pipe (8), a heat exchange bin (5) is fixedly arranged at the upper end inside the heat preservation bin (1), a plurality of heat conduction copper pipes (6) are uniformly and fixedly arranged inside the heat exchange bin (5), a liquid inlet pipe (7) is fixedly arranged at the lower end of one side of the surface of the heat exchange bin (5), a liquid outlet pipe (8) is fixedly arranged at the upper end of one side of the surface of the heat exchange bin (5) far away from the liquid inlet pipe (7), the liquid inlet pipe (7) and the liquid outlet pipe (8) are inserted into the heat preservation bin (1) and extend to the outer side of the heat preservation bin (1).

2. The steam turbine exhaust heat recovery device of the thermal power plant according to claim 1, characterized in that: and one end of the liquid inlet pipe (7) and one end of the liquid outlet pipe (8) are fixedly provided with a connecting flange (9).

3. The steam turbine exhaust heat recovery device of the thermal power plant according to claim 1, characterized in that: the lower end of the heat preservation bin (1) is fixedly provided with a return pipe (10), and the return pipe (10) is sleeved on the outer side surface of the air inlet pipe (2).

4. The steam turbine exhaust heat recovery device of the thermal power plant according to claim 1, characterized in that: a first guide block (11) is fixedly arranged between the interior of the heat preservation bin (1) and the heat exchange bin (5).

5. The steam turbine exhaust heat recovery device of the thermal power plant according to claim 1, characterized in that: and second guide blocks (12) are fixedly arranged on two sides of the lower end in the heat preservation bin (1).

6. The steam turbine exhaust heat recovery device of the thermal power plant according to claim 1, characterized in that: the outer side surface of the shielding cover (4) is uniformly and fixedly provided with a plurality of through grooves (13).