Power plant steam turbine drainage heat recovery device

Abstract

The utility model relates to the technical field of steam turbine heat recovery, in particular to a power plant steam turbine drainage heat recovery device which comprises a recovery chamber, a drying chamber, a recovery pipe, a grating net, a partition plate, a heat conduction assembly, a condensation assembly and a conveying assembly. The interior of the drying chamber is sequentially divided into a drying area, a uniform heating area and a heat exchange condensation area from top to bottom through the grating net and the partition plate, the heat conduction assembly is communicated with the condensation assembly, a heat dissipation piece is arranged in the uniform heating area, and the bottom end of the heat dissipation piece penetrates through the partition plate to be connected with the heat conduction assembly. The heat dissipation piece is used for guiding out heat in the heat conduction assembly and dissipating the heat to the uniform heating area, and the condensation assembly is used for condensing steam after heat exchange; through the arrangement of the heat conduction assembly, the problems that when articles are directly dried through high-temperature steam, too high heat is possibly generated on some articles, the articles are deformed or discolored, and the quality and the appearance of the articles are affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine heat recovery technology, specifically a power plant steam turbine condensate heat recovery device. Background Technology

[0002] A steam turbine, also known as a steam engine, is a rotary steam power unit. High-temperature, high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor equipped with a row of blades to rotate. The steam turbine converts internal energy into mechanical energy, which drives the generator on the same shaft to rotate. During the startup process, the steam turbine provides heat by heating the condensate drain. However, a large amount of steam is lost during the process of generating steam from the condensate drain. Therefore, a condensate drain heat recovery device for power plant steam turbines is needed.

[0003] A Chinese patent with publication number CN218627818U discloses a hydrophobic heat recovery device for power plant steam turbines. The device includes a base, a recovery chamber fixed to the upper surface of the base, a heating seat fixed to the upper surface of the base, a connecting pipe fixed between the recovery chamber and the inner wall of the heating seat, a heat dissipation groove inside one outer wall of the heating seat, a sealing cover rotatably connected to the heat dissipation groove via a hinge, a hanging ring fixed to the front surface of the sealing cover, a drain pipe fixed to the outer wall of the heating seat below the sealing cover, and a drain groove inside the heating seat. This utility model provides a hydrophobic heat recovery device for power plant steam turbines. When high-temperature steam enters the heating seat, the steam cools and condenses into water droplets during prolonged heating. When the water level inside the heating seat reaches a certain point, the user can collect this distilled water by opening a ball valve inside the drain pipe for unified treatment, thus achieving the function of heat recovery.

[0004] While the above-mentioned solution has the advantage of conveniently collecting distilled water, when drying items directly with high-temperature steam, it may cause excessive heat to some items, leading to deformation or discoloration, affecting the quality and appearance of the items. Therefore, we propose a power plant steam turbine condensate heat recovery device. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned shortcomings by providing a power plant steam turbine condensate heat recovery device. By setting up a heat-conducting component, it solves the problem that when items are dried directly by high-temperature steam, the heat may be too high, causing the items to deform or discolor, thus affecting the quality and appearance of the items.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat recovery device for steam turbine condensate in a power plant includes a recovery chamber and a drying chamber arranged adjacent to each other. A recovery pipe is connected at one end to the recovery chamber. A grid and a partition are arranged sequentially from top to bottom in the drying chamber, dividing the drying chamber into a drying zone, a uniform heating zone, and a heat exchange and condensation zone. The heat exchange and condensation zone is equipped with a heat-conducting component and a condensation component. The heat-conducting component in the recovery chamber and the heat exchange and condensation zone are connected by a conveying component. The heat-conducting component is connected to the condensation component. The uniform heating zone is equipped with a heat dissipation component. The bottom end of the heat dissipation component passes through the partition and connects to the heat-conducting component. The heat dissipation component is used to conduct and dissipate the heat in the heat-conducting component to the uniform heating zone. The condensation component is used to condense the steam after heat exchange.

[0008] Furthermore, the conveying assembly includes a horizontal pipe and a conveying fan disposed on the horizontal pipe; the heat conduction assembly includes a conveying pipe with one end connected to the horizontal pipe, and two heat conduction pipes are connected to one end of the conveying pipe via a tee; multiple sets of heat dissipation components are provided, and the multiple sets of heat dissipation components are distributed in a matrix on the conveying pipe and the heat conduction pipes.

[0009] Furthermore, the heat pipe is S-shaped.

[0010] Furthermore, the heat dissipation component includes a heat-conducting sleeve fixedly sleeved on a heat-conducting pipe or a delivery pipe, a heat-conducting column connected to the bottom end of the heat-conducting sleeve, and a heat-conducting base extending into the heat-uniforming zone at the top end of the heat-conducting column. The heat-conducting base is provided with multiple heat dissipation fins.

[0011] Furthermore, the condensation assembly includes a collection box, a vertical pipe connected to the top of the collection box, a pipe body connected to the bottom of the vertical pipe, multiple nozzles installed on the pipe body, a plate condenser disposed below the nozzles, and the end of the heat-conducting pipe away from the delivery pipe is connected to the collection box through a connecting pipe. The nozzles spray hot steam toward the plate condenser.

[0012] Furthermore, a water outlet pipe communicating with the heat exchange condensation zone is provided on one side of the drying chamber, and the water outlet pipe is located near the bottom of the drying chamber.

[0013] Furthermore, an air intake fan is installed at one end of the recovery pipe that extends into the recovery chamber.

[0014] Furthermore, it also includes a sealed door located on one side of the drying chamber.

[0015] The beneficial effects of this utility model are:

[0016] In practical applications, the recovery pipe is connected to the steam turbine. Steam from the turbine enters the recovery chamber through the recovery pipe and is then conveyed to the heat-conducting component via the conveying assembly. The heat is then dissipated through the heat dissipation components to the uniform heating zone, evenly heating and drying the items on the grid. This process recovers and utilizes the heat, avoiding damage to the surface of the items caused by direct contact with high temperatures. The steam after heat dissipation is condensed by the condensation component. This invention addresses the problem that direct drying with high-temperature steam may cause excessive heat to some items, leading to deformation or discoloration, affecting the quality and appearance of the items. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0020] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0021] Figure 5 This is a structural schematic diagram of the conveying component, the heat-conducting component, and the heat dissipation component in this utility model;

[0022] Reference numerals: 1. Recovery chamber; 11. Recovery pipe; 2. Drying chamber; 21. Grille; 22. Partition; 23. Drying zone; 24. Uniform heating zone; 25. Heat exchange condensation zone; 26. Water outlet pipe; 3. Heat-conducting component; 31. Conveying pipe; 32. Connecting pipe; 33. Condensation component; 4. Collection box; 41. Vertical pipe; 42. Pipe body; 43. Nozzle; 44. Plate condenser; 45. Conveying component; 5. Horizontal pipe; 51. Conveying fan; 52. Heat dissipation component; 6. Heat-conducting sleeve; 61. Heat-conducting column; 62. Heat-conducting base; 63. Heat dissipation fin; 64. Detailed Implementation

[0023] like Figure 1-5As shown, a power plant turbine condensate heat recovery device includes a recovery chamber 1 and a drying chamber 2 arranged adjacent to each other. A recovery pipe 11 is connected to the recovery chamber 1 at one end. A grid mesh 21 and a partition plate 22 are arranged sequentially from top to bottom in the drying chamber 2. The grid mesh 21 and the partition plate 22 divide the drying chamber 2 into a drying zone 23, a uniform heating zone 24, and a heat exchange condensation zone 25 from top to bottom. The heat exchange condensation zone 25 is provided with a heat conduction component 3 and a condensation component 4. The recovery chamber 1 and the heat conduction component 3 of the heat exchange condensation zone 25 are connected by a conveying component 5. The heat conduction component 3 is connected to the condensation component 4. The uniform heating zone 24 is provided with a heat dissipation component 6. The bottom end of the heat dissipation component 6 passes through the partition plate 22 and connects to the heat conduction component 3. The heat dissipation component 6 is used to conduct and dissipate the heat in the heat conduction component 3 to the uniform heating zone 24. The condensation component 4 is used to condense the heat-exchanged steam.

[0024] like Figure 1-5 As shown, the conveying assembly 5 includes a horizontal pipe 51 and a conveying fan 52 disposed on the horizontal pipe 51; the heat-conducting assembly 3 includes a conveying pipe 31 with one end connected to the horizontal pipe 51, and two heat-conducting pipes 32 connected to one end of the conveying pipe 31 via a tee; multiple sets of heat dissipation components 6 are provided, and the multiple sets of heat dissipation components 6 are distributed in a matrix on the conveying pipe 31 and the heat-conducting pipes 32; in this embodiment, the hot steam in the recovery chamber 1 is drawn into the conveying pipe 31 by the conveying fan 52 and the horizontal pipe 51, and enters the heat-conducting pipes 32 through the tee; through the multiple sets of heat dissipation components 6 distributed in a matrix on the conveying pipe 31 and the heat-conducting pipes 32, the heat in the conveying pipe 31 and the heat-conducting pipes 32 can be evenly discharged into the uniform heating zone 24, so as to uniformly heat and dry the items on the grid 21, avoiding damage to the surface of the items caused by direct contact with high temperature.

[0025] like Figure 1-5 As shown, the heat pipe 32 is S-shaped. In this embodiment, when the heat pipe 32 is S-shaped, the hot steam stays in the heat pipe 32 for a longer time, the heat dissipation components 6 are grouped more, and the heat recovery effect is better.

[0026] like Figure 1-5 As shown, the heat dissipation component 6 includes a heat-conducting sleeve 61 fixedly sleeved on the heat-conducting pipe 32 or the conveying pipe 31, a heat-conducting column 62 connected to the bottom end of the heat-conducting sleeve 61, and a heat-conducting seat 63 extending into the uniform heating zone 24 and connected to the top end of the heat-conducting column 62. The heat-conducting seat 63 is provided with multiple heat dissipation fins 64. In this embodiment, the heat inside the heat-conducting pipe 32 and the conveying pipe 31 is discharged through the heat-conducting sleeve 61, and the heat is dissipated from the multiple heat dissipation fins 64 to the uniform heating zone 24 through the heat-conducting column 62 and the heat-conducting seat 63, so as to uniformly heat and dry the items on the grid mesh 21.

[0027] like Figure 1-5As shown, the condensation assembly 4 includes a collection box 41, a vertical pipe 42 connected to the top of the collection box 41, a pipe body 43 connected to the bottom of the vertical pipe 42, multiple nozzles 44 installed on the pipe body 43, and a plate condenser 45 disposed below the nozzles 44. The end of the heat-conducting pipe 32 away from the delivery pipe 31 is connected to the collection box 41 through a connecting pipe 33. The nozzles 44 spray hot steam toward the plate condenser 45. In this embodiment, the hot steam after heat exchange passes through the collection box 41, the vertical pipe 42, the pipe body 43, and the nozzles 44, and is sprayed toward the plate condenser 45, where the steam is condensed into water by the plate condenser 45.

[0028] like Figure 1-5 As shown, a water outlet pipe 26 is provided on one side of the drying chamber 2, which is connected to the heat exchange condensation zone 25. The water outlet pipe 26 is located near the bottom of the drying chamber 2. In this embodiment, condensate can be discharged through the water outlet pipe 26.

[0029] like Figure 1-5 As shown, an air intake fan is installed at one end of the recovery pipe 11 that extends into the recovery chamber 1; in this embodiment, the air intake fan can provide a power source for the hot steam in the recovery pipe 11.

[0030] like Figure 1-5 As shown, it also includes a sealed door located on one side of the drying chamber 2; in this embodiment, the items to be dried can be placed into the drying area 23 through the sealed door.

[0031] Working principle: During use, the recovery pipe 11 is connected to the steam turbine. The steam in the steam turbine enters the recovery chamber 1 through the recovery pipe 11 and the inlet fan. The hot steam in the recovery chamber 1 is drawn into the delivery pipe 31 by the delivery fan 52 and the horizontal pipe 51, and then enters the heat conduction pipe 32 through the pipe tee. The heat conduction sleeve 61 conducts the temperature in the heat conduction pipe 32 and the delivery pipe 31. The heat is dissipated from the multiple heat dissipation fins 64 to the uniform heating zone 24 through the heat conduction column 62 and the heat conduction seat 63, so as to uniformly heat and dry the items on the grid 21. The hot steam after heat exchange is sprayed onto the plate condenser 45 through the collection box 41, the vertical pipe 42, the pipe body 43 and the nozzle 44. The steam is condensed into water by the plate condenser 45, and the condensate is discharged through the water outlet pipe 26.

[0032] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A power plant steam turbine drain heat recovery device, characterized by: The application relates to a recycling and drying device, which comprises a recycling chamber and a drying chamber arranged adjacently, a recycling pipe communicated with the recycling chamber, a grid and a partition plate arranged in the drying chamber from top to bottom, the grid and the partition plate sequentially divide the drying chamber into a drying area, a heat uniformizing area and a heat exchange condensing area from top to bottom, the heat exchange condensing area is provided with a heat conducting assembly and a condensing assembly, the recycling chamber and the heat conducting assembly of the heat exchange condensing area are communicated through a conveying assembly, the heat conducting assembly is communicated with the condensing assembly, the heat uniformizing area is provided with a heat radiating piece, the bottom end of the heat radiating piece penetrates through the partition plate and is connected with the heat conducting assembly, the heat radiating piece is used for conducting heat in the heat conducting assembly to the heat uniformizing area, and the condensing assembly is used for condensing steam after heat exchange.

2. A power plant steam turbine drain heat recovery device according to claim 1, wherein, The conveying assembly comprises a horizontal pipe and a conveying fan arranged on the horizontal pipe; the heat conducting assembly comprises a conveying pipe communicated with the horizontal pipe at one end, two heat conducting pipes connected with the conveying pipe through a three-way joint at one end, and a plurality of groups of heat radiating pieces arranged on the conveying pipe and the heat conducting pipes in a matrix mode.

3. A power plant steam turbine drain heat recovery device according to claim 2, wherein, The heat conducting pipe is in an S shape.

4. A power plant steam turbine drain heat recovery device according to claim 2, wherein, The heat radiating piece comprises a heat conducting sleeve fixedly sleeved on the heat conducting pipe or the conveying pipe, a heat conducting column connected with the heat conducting sleeve at the bottom end, a heat conducting seat connected with the heat conducting column at the top end and extending into the heat uniformizing area, and a plurality of heat radiating fins arranged on the heat conducting seat.

5. A power plant steam turbine drain heat recovery device according to claim 2 wherein, The condensing assembly comprises a collecting box, a vertical pipe communicated with the collecting box at the top end, a pipe body connected with the bottom end of the vertical pipe, a plurality of nozzles mounted on the pipe body, a plate type condenser arranged below the nozzles, and a connecting pipe communicated with the collecting box at the end of the heat conducting pipe away from the conveying pipe, the nozzles spray hot steam towards the plate type condenser.

6. A power plant steam turbine drain heat recovery device according to claim 5 wherein, One side of the drying chamber is provided with a water outlet pipe communicated with the heat exchange condensing area, and the water outlet pipe is arranged close to the bottom of the drying chamber.

7. A power plant steam turbine drain heat recovery device according to claim 1 wherein, An air inlet fan is mounted on the end of the recycling pipe extending into the recycling chamber.

8. A power plant steam turbine drain heat recovery device according to claim 1 wherein, The application further comprises a sealing door arranged on one side of the drying chamber.

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