Water taking structure and cold end system of thermal power plant

Abstract

A water intake structure and a cold-end system for a thermal power plant are disclosed, relating to the field of thermal power generation technology. The water intake structure includes a water intake component and a shielding component. The water intake component has a cavity; a water inlet is formed on the side wall of the water intake component, connecting the cavity to the outside; the shielding component is disposed on the water intake component and located inside or outside the water inlet. The shielding component partially blocks the water inlet; the bottom edge of the shielding component and the water inlet define a water intake channel that facilitates the entry of external water into the cavity. Using the above technical solution, there are advantages such as improved cooling efficiency of the cold-end system, reduced fuel consumption, cost savings, and reduced pollutant emissions.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation technology, specifically to a water intake structure and a cold end system for a thermal power plant. Background Technology

[0002] Thermal power generation is a method of generating electricity by converting the heat energy produced when combustible materials are burned into electrical energy through a power generation device. The basic process is as follows: fuel (such as coal, oil, or natural gas) is burned in a boiler, and the resulting heat energy heats water, forming high-temperature, high-pressure steam. The steam drives a turbine to rotate, which in turn drives a generator to produce electricity. Existing thermal power plants generally suffer from excessively high energy consumption of their units (a combination of related equipment capable of independently completing the entire process from fuel combustion to electrical output), and excessively high and fluctuating condenser cooling water inlet temperatures in the cold-end system. This results in higher fuel consumption per unit of electricity generated, higher operating costs, and increased pollutant emissions, posing a risk of exceeding total emission standards. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a water intake structure and a cold-end system for thermal power plants, which has the advantages of improving the cooling efficiency of the cold-end system, reducing fuel consumption, saving costs, and reducing pollutant emissions.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a water intake structure, comprising: A water intake component has an internal cavity; a water inlet is provided on the side wall of the water intake component, connecting the cavity to the outside; and A shielding element is disposed on the water intake element and located inside or outside the water intake. The shielding component is used to partially block the water intake. The bottom edge of the shielding component and the water inlet define a water intake channel that facilitates the entry of external water into the cavity.

[0005] The present invention further comprises that the shielding member is disposed inside the water inlet, the top edge of the shielding member is connected to the inner top wall of the water inlet, and the two sides are respectively connected to the inner side walls of the end of the water inlet near the top of the water inlet; the bottom edge of the shielding member extends vertically downward toward the inner bottom wall of the water inlet.

[0006] In a further embodiment of this invention, the shielding component is constructed of reinforced concrete.

[0007] The present invention further provides that the vertical distance between the top edge of the water intake and the bottom edge of the shield is set to be 2.5-2.7 meters.

[0008] The present invention further includes one or more water inlets on the side wall of the water intake component; and one or more corresponding shielding components are provided.

[0009] The present invention is further provided that the side wall of the water intake component is provided with multiple water intake ports; and the shielding component is provided with multiple corresponding ports.

[0010] The present invention is further provided that the side wall of the water intake component has three water intake ports; and the shielding component is provided with three corresponding ports.

[0011] To achieve the above objectives, another technical solution adopted by this utility model is: a cold end system for a thermal power plant, comprising: a condenser, a circulating water pump connected at one end to the condenser, a water intake pipe connected at the other end to the circulating water pump, and a water intake structure as described above; the other end of the water intake pipe is connected to the cavity.

[0012] The present invention further includes, in the case of, a drainage pipe connected at one end to the condenser and at the other end to the outside environment, wherein the cold end system of the thermal power plant also includes: a drainage pipe connected at one end to the condenser and at the other end to the outside environment.

[0013] The beneficial effects of adopting the above technical solution are as follows: In this utility model, the shielding component partially blocks the water intake of the water intake component. The bottom edge of the shielding component and the water intake define a water intake channel that facilitates the entry of external water into the cavity, allowing water from further away from the water surface (deeper depth) to flow into the cavity. This utility model utilizes the obvious stratification of temperature distribution in open natural water bodies (such as rivers, lakes, and seas). The surface water of natural water bodies is affected by direct sunlight and atmospheric heat exchange, resulting in a higher temperature. The middle and lower layers of water are less affected by sunlight, resulting in a lower and more stable temperature. Furthermore, based on the correlation between water density and water temperature, the lower the water temperature, the higher the water density and the deeper the water. The shielding component in this water intake structure blocks the upper part of the water intake, effectively preventing high-temperature surface water from entering the cavity of the water intake component. This allows low-temperature water in the middle and lower layers of the water body to enter the cavity through the water intake channel, ultimately resulting in a lower and more stable temperature of the cooling water entering the condenser. This improves the cooling efficiency of the cold-end system, further reduces fuel consumption, saves costs, and reduces pollutant emissions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the concealed shielding component of the water intake structure; Figure 2 This is a schematic diagram of the water intake structure; Figure 3 This is a schematic diagram of the cold end system of this thermal power plant.

[0016] Explanation of reference numerals in the attached drawings: 100, water intake component; 110, cavity; 120, water intake port; 200, shielding component; 300, water intake channel; 400, condenser; 500, circulating water pump; 600, water intake pipe; 700, drainage pipe. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0019] This embodiment relates to a water intake structure, as shown in the following figure. Figures 1-2The system includes a water intake component 100 and a shielding component 200. The water intake component 100 has a cavity 110; a water intake port 120 is formed on the side wall of the water intake component 100, connecting the cavity 110 to the outside. The shielding component 200 is disposed on the water intake component 100 and located inside or outside the water intake port 120; the shielding component 200 partially shields the water intake port 120; the bottom edge of the shielding component 200 and the water intake port 120 define a water intake channel 300 that facilitates the entry of external water flow into the cavity 110, allowing water from further away from the water surface (deeper depth) to flow into the cavity 110. This water intake structure utilizes the distinct stratification of temperature distribution in open natural water bodies (such as rivers, lakes, and seas). The surface water of natural water bodies is affected by direct sunlight and atmospheric heat exchange, resulting in a higher temperature, while the middle and lower layers of water are less affected by sunlight, resulting in a lower and more stable temperature. Furthermore, according to the density-temperature conversion table of water, the lower the water temperature, the higher the water density and the deeper the water. The shielding component 200 in this water intake structure shields the upper part of the water intake 120, effectively preventing high-temperature surface water from entering the cavity 110 of the water intake component 100. This allows low-temperature water in the middle and lower layers of the water body to enter the cavity 110 through the water intake channel 300, ultimately resulting in lower and more stable cooling water entering the condenser 400. This improves the cooling efficiency of the cold-end system, further reducing fuel consumption, saving costs, and reducing pollutant emissions. It should be noted that the overall shape of this water intake structure can be cylindrical, cuboid, or cube, etc. No specific restrictions are placed on the overall shape of this water intake structure. This water intake structure is applied to underwater water intake operations in open natural water bodies (such as rivers, lakes, and seas) to use these open water bodies as the cooling water source for the cold-end system of thermal power plants. The density-temperature conversion table of water is shown below:

[0020] Furthermore, the shield 200 is disposed inside the water inlet 120. The top edge of the shield 200 is connected to the inner top wall of the water inlet 120, and the two sides are respectively connected to the inner side walls of the end of the water inlet 120 near the top of the water inlet 100. The bottom edge of the shield 200 extends vertically downward toward the inner bottom wall of the water inlet 120. Specifically, the top edge of the shield 200 is connected to the inner top wall (i.e., the inner top inner wall) of the water inlet 120, and the two sides of the shield 200 are respectively connected to the inner side walls of the end of the water inlet 120 near the top of the water inlet 100 (i.e., the inner side walls of the upper and middle ends of the water inlet 120). That is, the shield 200 blocks the upper and middle ends of the water inlet 120, which not only ensures that the high-temperature water on the surface of the water body cannot enter the cavity 110 through the water inlet 120 due to the top shield, but also prevents the high-temperature water on the surface from entering the cavity 110 from the side of the water inlet 120. Ultimately, it ensures that the low-temperature water in the middle and lower layers of the water body enters the cavity 110 through the water intake channel 300 defined by the bottom edge of the shield 200 and the lower end of the water inlet 120, further improving the accuracy of low-temperature water intake. In some embodiments, the shielding member 200 is disposed on the outside of the water inlet 120, and it is sufficient that the shielding member 200 can shield the upper and middle ends of the water inlet 120.

[0021] Furthermore, the shielding component 200 is constructed of reinforced concrete. Specifically, the shielding component 200 is cast from seawater-resistant reinforced concrete. The seawater-resistant reinforced concrete structure can be an HPC (high-performance concrete) structure or an FRP (fiberglass reinforced plastic) structure.

[0022] In this embodiment, the vertical distance between the top edge of the water intake 120 and the bottom edge of the shield 200 is set to a range of 2.5-2.7 meters. Specifically, the vertical distance between the top edge of the water intake 120 and the bottom edge of the shield 200 can be set to 2.50 meters, 2.52 meters, 2.54 meters, 2.56 meters, 2.58 meters, 2.6 meters, 2.62 meters, 2.64 meters, 2.66 meters, 2.68 meters, or 2.7 meters. It is sufficient that the vertical distance between the top edge of the water intake 120 and the bottom edge of the shield 200 is set to a range of 2.5-2.7 meters. No specific limitation is imposed. Preferably, the vertical distance between the top edge of the water intake 120 and the bottom edge of the shield 200 is set to 2.5 meters. Furthermore, during actual water intake, the vertical distance between the top edge of the water intake 120 and the bottom edge of the shield 200 is adjusted according to the specific water conditions and the temperature of the water to be taken.

[0023] Furthermore, referring to Figures 1-2 One or more water inlets 120 are provided on the side wall of the water intake component 100; one or more corresponding shielding components 200 are provided.

[0024] Furthermore, the water intake component 100 has multiple water inlets 120 on its side wall; and multiple shielding components 200 are correspondingly provided to form multiple independent low-temperature water intake channels 300 in different directions around the water intake component 100, increasing the amount of low-temperature water obtained per unit time. Specifically, the water intake component 100 has three water inlets 120 on its side wall; and three shielding components 200 are correspondingly provided. In some embodiments, the water intake component 100 may also have four or five water inlets 120 on its side wall; and four or five shielding components 200 are correspondingly provided. The number of water inlets is set according to the actual situation, and the number of shielding components corresponds to the number of water inlets. In other embodiments, the water intake component 100 may also have one water inlet 120 on its side wall; and one shielding component 200 is correspondingly provided.

[0025] This embodiment also relates to a cold-end system for a thermal power plant, referring to... Figure 3 The system includes a condenser 400, a circulating water pump 500, a water intake pipe 600, and the water intake structure described above. One end of the circulating water pump 500 is connected to the condenser 400, and one end of the water intake pipe 600 is connected to the circulating water pump 500, while the other end is connected to the cavity 110 of the water intake component 100. This cold-end system of the thermal power plant has the advantages of high cooling efficiency, low system energy consumption, and low cost. Furthermore, the cold-end system of this thermal power plant also includes a drainage pipe 700, one end of which is connected to the condenser 400, and the other end is connected to the outside environment. Specifically, the outside environment refers to natural water bodies. The cooled water, after absorbing heat, is discharged through the drainage pipe 700 to an open water area, i.e., a natural water body, avoiding the vicious cycle of "thermal pollution" caused by the accumulation of hot water in the water intake area and the resulting increase in water intake temperature.

[0026] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A water intake structure, characterized by, include: A water intake component (100) has a cavity (110) inside; a water intake port (120) is provided on the side wall of the water intake component (100) to connect the cavity (110) with the outside; and A shielding member (200) is disposed on the water intake member (100) and located on the inner or outer side of the water intake (120); The shielding member (200) is used to partially block the water intake (120); The bottom edge of the shield (200) and the water inlet (120) define a water intake channel (300) that facilitates the entry of external water into the cavity (110).

2. The water intake structure of claim 1, wherein The shielding member (200) is disposed inside the water inlet (120). The top edge of the shielding member (200) is connected to the inner top wall of the water inlet (120), and the two sides are respectively connected to the inner side walls of the end of the water inlet (120) near the top of the water inlet member (100). The bottom edge of the shielding member (200) extends vertically downward toward the inner bottom wall of the water inlet (120).

3. The water intake structure of claim 2, wherein, The shielding component (200) is made of reinforced concrete.

4. The water intake structure of claim 2, wherein, The vertical distance between the top edge of the water intake (120) and the bottom edge of the shield (200) is set to be 2.5-2.7 meters.

5. The water intake structure of claim 4, wherein, One or more water inlets (120) are provided on the side wall of the water intake component (100); one or more corresponding shielding components (200) are provided.

6. The water intake structure of claim 5, wherein, The water intake component (100) has multiple water intake ports (120) on its side wall; the shielding component (200) has multiple corresponding ports.

7. The water intake structure of claim 6, wherein, The water intake component (100) has three water intake ports (120) on its side wall; the shielding component (200) has three corresponding ports.

8. A thermal power plant cold-end system, characterized in that include: A condenser (400), a circulating water pump (500) connected at one end to the condenser (400), a water intake pipe (600) connected at one end to the circulating water pump (500), and a water intake structure as described in any one of claims 1-7; the other end of the water intake pipe (600) is connected to the cavity (110).

9. The thermal power plant cold-end system of claim 8, wherein, The cold end system of the thermal power plant also includes a drainage pipe (700) with one end connected to the condenser (400) and the other end connected to the outside.

Images