A high-level mixed arrangement natural ventilation direct air cooling system

Abstract

The utility model provides a kind of high-level mixed arrangement natural ventilation direct air cooling system, including air cooling tower, still including the multiple first air cooling condenser that the continuous setting of outer circumferential surface at air cooling tower air inlet is arranged, the multiple second air cooling condenser that are arranged in the tower of air cooling tower and are at same height horizontal interval arrangement, multiple steam isolation valve for isolating or conducting the steam of first air cooling condenser and second air cooling condenser, steam distribution pipe being arranged at the top of first air cooling condenser, and condensate device;The inlet pipeline of first air cooling condenser and the inlet pipeline of second air cooling condenser are connected with the outlet end of steam distribution pipe respectively, the outlet pipeline of first air cooling condenser and the outlet pipeline of second air cooling condenser are connected with the inlet end of condensate device respectively, the plane where the bottom of second air cooling condenser is located is not higher than the plane where the bottom of first air cooling condenser is located.The utility model can reduce the freeze-proof pressure of natural ventilation direct air cooling system in winter.

Description

Technical Field

[0001] This utility model relates to the field of natural ventilation direct air cooling technology, and in particular to a high-level mixed arrangement natural ventilation direct air cooling system. Background Technology

[0002] Natural draft condenser (NDC) systems refer to turbine exhaust steam being delivered to air-cooled radiators via exhaust pipes. These radiators are housed within a natural draft condenser tower, where the tower's draft forces air through them, causing the steam to condense. This system performs single-pass heat exchange, resulting in high cooling efficiency. It eliminates the need for mechanical ventilation fan groups and circulating water pumps, reducing electricity consumption and eliminating noise. This represents a significant technological breakthrough in air-cooling technology for large coal-fired power units. However, existing high-level mixed-layout natural draft condenser systems suffer from low condensate subcooling in winter, potentially leading to radiator tube bundle freezing and cracking. These systems face significant challenges in preventing freezing during winter.

[0003] Therefore, it is necessary to develop a new natural ventilation direct air cooling system to reduce the antifreeze pressure of natural ventilation direct air cooling systems in winter. Utility Model Content

[0004] The purpose of this invention is to provide a high-level hybrid arrangement natural ventilation direct air cooling system to solve the problem of high antifreeze pressure in existing natural ventilation direct air cooling systems during winter.

[0005] To solve the above-mentioned technical problems, this utility model provides a high-level mixed arrangement natural ventilation direct air-cooling system, including an air-cooling tower, a plurality of first air-cooling condensers continuously arranged on the outer circumference of the air-cooling tower inlet, a plurality of second air-cooling condensers arranged horizontally at the same height and intervals inside the air-cooling tower, a plurality of steam isolation valves for isolating or connecting the steam of the first air-cooling condensers and the second air-cooling condensers, a steam distribution pipe arranged on the top of the first air-cooling condensers, and a condensate device; the inlet pipes of the first air-cooling condensers and the inlet pipes of the second air-cooling condensers are respectively connected to the outlet end of the steam distribution pipe, the outlet pipes of the first air-cooling condensers and the outlet pipes of the second air-cooling condensers are respectively connected to the inlet end of the condensate device, and the plane where the bottom of the second air-cooling condenser is located is not higher than the plane where the bottom of the first air-cooling condenser is located.

[0006] Optionally, the plane containing the bottom of the second air condenser is parallel to the plane containing the bottom of the first air condenser.

[0007] Optionally, the first air-cooled condenser includes a vertical cooling pipe, a vertically arranged first vertical heat dissipation plate, and a second vertical heat dissipation plate whose vertical side is connected to the vertical side of the first vertical heat dissipation plate. The vertical cooling pipe is disposed on the first vertical heat dissipation plate and the second vertical heat dissipation plate. The first vertical heat dissipation plate and the second vertical heat dissipation plate have openings for air circulation. The included angle formed by the first vertical heat dissipation plate and the second vertical heat dissipation plate faces the outside of the air-cooled tower. One end of the vertical cooling pipe is connected to the steam distribution pipe, and the other end is connected to the condensate device.

[0008] Optionally, the first vertical heat sink and the second vertical heat sink have aluminum fins.

[0009] Optionally, the first air condenser further includes a first adjustable louver, one vertical side of which is connected to the vertical side of the first vertical heat sink, and the other vertical side of which is connected to the vertical side of the second vertical heat sink, so that the first air condenser forms a triangular prism structure.

[0010] Optionally, the second air-cooled condenser includes a horizontal cooling pipe, a first horizontal heat dissipation plate at an angle to the horizontal surface, and a second horizontal heat dissipation plate at an angle to the horizontal surface with its horizontal side connected to the horizontal side of the first horizontal heat dissipation plate. The horizontal cooling pipe is disposed on the first horizontal heat dissipation plate and the second horizontal heat dissipation plate. The first horizontal heat dissipation plate and the second horizontal heat dissipation plate have openings for air circulation. The angle formed by the first horizontal heat dissipation plate and the second horizontal heat dissipation plate faces the bottom of the air-cooled tower. One end of the horizontal cooling pipe is connected to the steam distribution pipe, and the other end is connected to the condensate device.

[0011] Optionally, the first horizontal heat sink and the second horizontal heat sink have aluminum fins.

[0012] Optionally, the second air condenser further includes a second adjustable louver, one horizontal side of which is connected to the vertical side of the first horizontal heat sink, and the other horizontal side of which is connected to the horizontal side of the second horizontal heat sink.

[0013] Optionally, it also includes a cantilever plate located on the outer side of the cylinder wall of the air-cooled tower, with the first air-cooled condenser disposed on the cantilever plate.

[0014] Optionally, the steam distribution pipe is disposed on the pick plate.

[0015] This utility model provides a high-level hybrid arrangement natural ventilation direct air-cooling system, which has the following beneficial effects:

[0016] Because a first air-cooled condenser and a second air-cooled condenser are installed, and both are connected to the outlet end of the steam distribution pipe (i.e., the first and second air-cooled condensers are connected in parallel), and the plane where the bottom of the second air-cooled condenser is located is not higher than the plane where the bottom of the first air-cooled condenser is located, multiple first air-cooled condensers are continuously arranged on the outer circumference of the air-cooled tower at the air inlet, and multiple second air-cooled condensers are arranged horizontally at the same height inside the air-cooled tower. Therefore, some air flows through the first air-cooled condenser and then enters the air-cooled tower, and then flows out from the top of the air-cooled tower; other air enters the air-cooled tower through the air inlet, then flows through the second air-cooled condenser, and then flows out from the top of the air-cooled tower. Thus, the steam isolation valve can be selectively opened to allow steam to enter the first air-cooled condenser and / or the second air-cooled condenser, resulting in three different condensation effects, which can be adjusted according to different needs. By selectively opening the steam isolation valve according to ambient temperature, different condensation requirements can be met. Especially in winter when temperatures are low, steam can be introduced only into the first or second air-cooled condenser, thus preventing the pipes of the first and second air-cooled condensers from freezing. In addition, since the bottom plane of the second air-cooled condenser is not higher than the bottom plane of the first air-cooled condenser, the first air-cooled condenser allows ambient air to flow through it into the air-cooled tower, resulting in less airflow through the second air-cooled condenser. In windy conditions, the second air-cooled condenser can still operate normally, improving the condensation effect of the high-level mixed arrangement natural ventilation direct air-cooled system and providing better wind resistance. The fact that the first and second air-cooled condensers are both horizontal inside the tower and vertical outside can reduce the size of the cooling tower of the direct air-cooled system, saving civil engineering costs, reducing land occupation, and making the overall layout of the thermal power plant more flexible. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the high-level mixed arrangement natural ventilation direct air-cooling system in one direction according to an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of the high-level mixed arrangement natural ventilation direct air-cooling system in this utility model embodiment from another direction;

[0019] Figure 3 This is a cross-sectional view of the high-level mixed arrangement natural ventilation direct air-cooling system in another direction, as described in this utility model embodiment.

[0020] Figure 4 This is a front view of the first air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the utility model;

[0021] Figure 5 This is a top view of the first air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the utility model;

[0022] Figure 6 This is a front view of the second air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the utility model;

[0023] Figure 7 This is a top view of the second air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-Air-cooled tower; 110-Lower X-column; 120-Upper tower cylinder; 130-Supporting platform; 140-Inner tower platform; 150-Cantilever plate; 160-Sealing plate; 200-First air-cooled condenser; 210-First adjustable louver; 300-Second air-cooled condenser; 400-Steam isolation valve; 500-Steam distribution pipe; 600-Condensate device; 700-Main steam pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 1 This is a cross-sectional view of the high-level mixed arrangement natural ventilation direct air-cooling system in one direction, according to an embodiment of this utility model. Figure 2 This is a cross-sectional view of the high-level mixed arrangement natural ventilation direct air-cooling system in this embodiment of the invention from another direction. Figure 3 This is a cross-sectional view from another direction of the high-level mixed arrangement natural ventilation direct air-cooling system in this utility model embodiment. Figure 4 This is a front view of the first air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the present invention. Figure 5 This is a top view of the first air condenser in the high-level mixed arrangement natural ventilation direct air-cooled system according to an embodiment of this utility model. Figure 6 This is a front view of the second air condenser of the high-level mixed arrangement natural ventilation direct air-cooled system in this embodiment of the present invention. Figure 7This is a top view of the second air-cooled condenser in a high-level mixed-arrangement natural ventilation direct air-cooling system according to an embodiment of the present invention. This embodiment provides a high-level mixed-arrangement natural ventilation direct air-cooling system, including an air-cooled tower 100, a plurality of first air-cooled condensers 200 continuously arranged on the outer circumferential surface at the air inlet of the air-cooled tower 100, a plurality of second air-cooled condensers 300 arranged horizontally at the same height within the air-cooled tower 100, and a plurality of steam isolation valves 4 for isolating or connecting the steam of the first air-cooled condensers 200 and the second air-cooled condensers 300. 00, a steam distribution pipe 500 and a condensate device 600 are provided on the top of the first air-cooled condenser 200; the inlet pipe of the first air-cooled condenser 200 and the inlet pipe of the second air-cooled condenser 300 are respectively connected to the outlet end of the steam distribution pipe 500, and the outlet pipe of the first air-cooled condenser 200 and the outlet pipe of the second air-cooled condenser 300 are respectively connected to the inlet end of the condensate device 600, and the plane where the bottom of the second air-cooled condenser 300 is located is not higher than the plane where the bottom of the first air-cooled condenser 200 is located.

[0033] Because a first air-cooled condenser 200 and a second air-cooled condenser 300 are provided, and the first air-cooled condenser 200 and the second air-cooled condenser 300 are respectively connected to the outlet end of the steam distribution pipe 500, that is, the first air-cooled condenser 200 and the second air-cooled condenser 300 are arranged in parallel, and since the plane where the bottom of the second air-cooled condenser 300 is located is not higher than the plane where the bottom of the first air-cooled condenser 200 is located, multiple first air-cooled condensers 200 are continuously arranged on the outer peripheral surface of the air inlet of the air-cooled tower 100, and multiple second air-cooled condensers 300 are arranged in parallel. The air condensers 0 are arranged horizontally at the same height within the air-cooled tower 100. Therefore, a portion of the air flows through the first air-cooled condenser 200 before entering the air-cooled tower 100 and then exiting from the top of the air-cooled tower 100. Another portion of the air enters the air-cooled tower 100 through the air inlet, then flows through the second air-cooled condenser 300 and then exits from the top of the air-cooled tower 100. Thus, the steam isolation valve 400 can be selectively opened to allow steam to enter the first air-cooled condenser 200 and / or the second air-cooled condenser 300, thereby creating three different condensation effects. Depending on the ambient temperature, the steam isolation valve 400 can be selectively opened to meet different condensation requirements. Especially in cold winters, steam can be introduced only into the first air-cooled condenser 200 or the second air-cooled condenser 300, thus preventing freezing of the pipes in both condensers. Furthermore, since the bottom plane of the second air-cooled condenser 300 is not higher than the bottom plane of the first air-cooled condenser 200, ambient air can flow through the first air-cooled condenser 200. The condenser 200 enters the air-cooled tower 100, causing the wind speed at the inlet of the second air-cooled condenser 300 to decrease. In windy conditions, the ambient wind at the inlet of the second air-cooled condenser 300 decreases, resulting in an increase in the air flowing through the second air-cooled condenser 300. This improves the condensation effect of the high-level mixed arrangement of natural ventilation direct air-cooled system and provides better wind resistance. The simultaneous horizontal arrangement of the first air-cooled condenser 200 and the second air-cooled condenser 300 inside the tower and vertical arrangement outside the tower can reduce the size of the cooling tower of the direct air-cooled system, save civil engineering costs, reduce land occupation, and make the overall layout of the thermal power plant more flexible.

[0034] Preferably, the plane containing the bottom of the second air-cooled condenser 300 is parallel to the plane containing the bottom of the first air-cooled condenser 200. This allows for full utilization of the air inlet of the air-cooled tower 100.

[0035] Specifically, the first air-cooled condenser 200 includes a vertical cooling pipe, a vertically arranged first vertical heat dissipation plate, and a second vertical heat dissipation plate whose vertical side is connected to the vertical side of the first vertical heat dissipation plate. The vertical cooling pipe is arranged on the first vertical heat dissipation plate and the second vertical heat dissipation plate. The first vertical heat dissipation plate and the second vertical heat dissipation plate have openings for air circulation. The included angle formed by the first vertical heat dissipation plate and the second vertical heat dissipation plate faces the outside of the air-cooled tower 100. One end of the vertical cooling pipe is connected to the steam distribution pipe 500, and the other end is connected to the condensate device 600.

[0036] The first vertical heat sink and the second vertical heat sink have aluminum fins.

[0037] Specifically, the second air-cooled condenser 300 includes a horizontal cooling pipe, a first horizontal heat dissipation plate forming an angle with the horizontal surface, and a second horizontal heat dissipation plate forming an angle with the horizontal surface and whose horizontal side is connected to the horizontal side of the first horizontal heat dissipation plate. The horizontal cooling pipe is disposed on the first horizontal heat dissipation plate and the second horizontal heat dissipation plate. The first horizontal heat dissipation plate and the second horizontal heat dissipation plate have openings for air circulation. The angle formed by the first horizontal heat dissipation plate and the second horizontal heat dissipation plate faces the bottom of the air-cooled tower 100. One end of the horizontal cooling pipe is connected to the steam distribution pipe 500, and the other end is connected to the condensate device 600.

[0038] The first horizontal heat sink and the second horizontal heat sink have aluminum fins.

[0039] Preferably, the first air-cooled condenser 200 further includes a first adjustable louver 210. One vertical side of the first adjustable louver 210 is connected to the vertical side of the first vertical heat sink, and the other vertical side of the first adjustable louver 210 is connected to the vertical side of the second vertical heat sink, forming a triangular prism structure for the first air-cooled condenser. Air first enters the first air-cooled condenser 200 through the first adjustable louver 210, then flows through the first and second vertical heat sinks, and finally enters the air-cooled tower 100. Thus, the amount of air entering the first air-cooled condenser 200 and the air-cooled tower 100 can be adjusted by regulating the opening of the first adjustable louver 210, thereby adjusting the cooling effect of the high-level mixed arrangement natural ventilation direct air-cooling system.

[0040] Preferably, the second air-cooled condenser 300 further includes a second adjustable louver. One horizontal side of the second adjustable louver is connected to the horizontal side of the first horizontal heat dissipation plate, and the other horizontal side of the second adjustable louver is connected to the horizontal side of the second horizontal heat dissipation plate. Thus, the second adjustable louver is located at the bottom of the second air-cooled condenser 300, forming a triangular prism structure. Air first enters the second air-cooled condenser 300 through the second adjustable louver, then flows through the first and second horizontal heat dissipation plates, and finally enters the air-cooled tower 100. Therefore, the amount of air entering the second air-cooled condenser 300 and the air-cooled tower 100 can be adjusted by regulating the opening degree of the second adjustable louver, thereby adjusting the cooling effect of the high-level mixed-arrangement natural ventilation direct air-cooling system.

[0041] The air-cooled tower 100 includes a lower X-column 110 and an upper tower 120 supported by the lower X-column 110. The first air-cooled condenser 200 is disposed on the outer surface of the lower X-column 110, and the second air-cooled condenser 300 is disposed inside the lower X-column 110.

[0042] The air-cooled tower 100 is provided with a support platform 130 and an inner tower platform 140. The support platform 130 is located at the bottom of the air-cooled tower 100, and the inner tower platform 140 is located on the support platform 130. The second air-cooled condenser 300 is arranged on the inner tower platform 140.

[0043] The high-level mixed arrangement natural ventilation direct air-cooling system also includes a cantilever plate 150 located on the outer side of the cylinder wall of the air-cooling tower 100, and the first air-cooled condenser 200 is installed on the cantilever plate 150.

[0044] Preferably, the steam distribution pipe 500 is disposed on the pick plate 150.

[0045] The inlet end of the steam distribution pipe 500 is connected to the outlet end of the main steam pipe 700.

[0046] Preferably, the steam isolation valve 400 is an electric steam isolation valve 400.

[0047] Preferably, a sealing plate 160 is provided between the first air condenser 200 and the tower wall of the air-cooled tower 100 to prevent air from flowing directly into the cooling tower without passing through the first air condenser 200.

[0048] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A high-level hybrid arrangement natural ventilation direct air-cooling system, comprising an air-cooling tower, characterized in that, It also includes a plurality of first air-cooled condensers continuously arranged on the outer circumferential surface at the air inlet of the air-cooled tower, a plurality of second air-cooled condensers arranged horizontally at the same height within the air-cooled tower, a plurality of steam isolation valves for isolating or connecting the steam of the first air-cooled condensers and the second air-cooled condensers, a steam distribution pipe arranged at the top of the first air-cooled condensers, and a condensate device; the inlet pipes of the first air-cooled condensers and the inlet pipes of the second air-cooled condensers are respectively connected to the outlet end of the steam distribution pipe, the outlet pipes of the first air-cooled condensers and the outlet pipes of the second air-cooled condensers are respectively connected to the inlet end of the condensate device, and the plane at the bottom of the second air-cooled condenser is not higher than the plane at the bottom of the first air-cooled condenser.

2. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 1, characterized in that, The plane containing the bottom of the second air condenser is parallel to the plane containing the bottom of the first air condenser.

3. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 1, characterized in that, The first air-cooled condenser includes a vertical cooling pipe, a vertically arranged first vertical heat dissipation plate, and a second vertical heat dissipation plate whose vertical side is connected to the vertical side of the first vertical heat dissipation plate. The vertical cooling pipe is arranged on the first vertical heat dissipation plate and the second vertical heat dissipation plate. The first vertical heat dissipation plate and the second vertical heat dissipation plate have openings for air circulation. The included angle formed by the first vertical heat dissipation plate and the second vertical heat dissipation plate faces the outside of the air-cooled tower. One end of the vertical cooling pipe is connected to the steam distribution pipe, and the other end is connected to the condensate device.

4. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 3, characterized in that, The first vertical heat sink and the second vertical heat sink have aluminum fins.

5. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 3, characterized in that, The first air condenser also includes a first adjustable louver, one vertical side of which is connected to the vertical side of the first vertical heat sink, and the other vertical side of which is connected to the vertical side of the second vertical heat sink, so that the first air condenser forms a triangular prism structure.

6. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 1, characterized in that, The second air-cooled condenser includes a horizontal cooling pipe, a first horizontal heat dissipation plate forming an angle with the horizontal surface, and a second horizontal heat dissipation plate forming an angle with the horizontal surface and whose horizontal side is connected to the horizontal side of the first horizontal heat dissipation plate. The horizontal cooling pipe is disposed on the first horizontal heat dissipation plate and the second horizontal heat dissipation plate. The first horizontal heat dissipation plate and the second horizontal heat dissipation plate have openings for air circulation. The angle formed by the first horizontal heat dissipation plate and the second horizontal heat dissipation plate faces the bottom of the air-cooled tower. One end of the horizontal cooling pipe is connected to the steam distribution pipe, and the other end is connected to the condensate device.

7. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 6, characterized in that, The first horizontal heat sink and the second horizontal heat sink have aluminum fins.

8. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 6, characterized in that, The second air condenser also includes a second adjustable louver, one horizontal side of which is connected to the vertical side of the first horizontal heat sink, and the other horizontal side of which is connected to the horizontal side of the second horizontal heat sink.

9. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 1, characterized in that, It also includes a cantilever plate located on the outer side of the cylinder wall of the air-cooled tower, on which the first air-cooled condenser is disposed.

10. The high-level hybrid arrangement natural ventilation direct air-cooling system as described in claim 9, characterized in that, The steam distribution pipe is installed on the lifting plate.

Images