Induced air type air cooling condenser

Abstract

An induced air type air cooling condenser belongs to the related technical field of heat transfer devices, and comprises a heat exchanger, a condenser, a condenser, an air inlet pipe, an air outlet pipe, an air inlet pipe and an air outlet pipe, and is characterized in that the heat exchanger comprises a single-row pipe bundle; the steam distribution pipeline is arranged above the single-row pipe bundle; the collecting header is arranged below the single-row tube bundle; the air cooling device comprises a fan supporting platform and a fan arranged on the fan supporting platform, and the fan supporting platform is arranged above the steam distribution pipeline; the fan supporting platform, the steam distribution pipeline and the heat exchanger are connected to form a self-supporting structure capable of supporting the fan. The fan is mounted above the single-row pipe bundle, and the fan can be mounted through the single-row pipe bundle and other structures of the air-cooled condenser by adopting the structural form of fan overhead and induced air cooling, so that the influence degree of environmental wind on the operation of a condenser unit can be reduced. The running energy consumption of the condenser unit is reduced, and the construction cost of the condenser unit is also reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of heat transfer devices, and more specifically, relates to an induced draft air condenser that can be applied in fields such as thermal power plants, nuclear power plants, metallurgy, and chemical industry. Background Technology

[0002] A condenser (also called a steam condenser) is a heat transfer device (steam handling equipment) used for condensing steam. Condensers include air-cooled condensers, which use air (low temperature) to cool steam (high temperature). Condensers also include heat exchangers, which typically consist of multiple parallel finned tubes forming a tube bundle structure. The tubes that make up the tube bundle structure exchange heat with the ambient air (the air surrounding the tubes). When steam passes through the tubes, it releases heat and eventually condenses.

[0003] A typical air-cooled condenser tube bundle structure is as follows: Two tube bundles form a group, with the two bundles in the same group assembled in a Λ-shape. The individual tubes constituting the tube bundle structure are inclined relative to the horizontal plane. When condensate forms in the tubes, it flows to the lower end of the tubes under gravity and is collected. The air-cooled condenser includes one or more steam distribution pipes, through which steam discharged from the steam turbine is distributed to the individual tube bundles. To ensure condensation efficiency, the air-cooled condenser is also equipped with an electric fan, positioned below the two tube bundles in the same group, providing forced ventilation for cooling. To obtain sufficient air, the electric fan and its upper structure need to be elevated (located at a certain height above ground). This necessitates a support structure below the air-cooled condenser. Additionally, windbreaks are required around the air-cooled condenser to mitigate the impact of hot air recirculation after heat release.

[0004] Analysis of the structure of existing air-cooled condensers reveals that: an electric fan is installed below the tube bundle structure, and the airflow is accelerated to cool the tube bundle structure by a forced air method. During operation, air-cooled condenser units are greatly affected by ambient wind, have high power consumption, and require a large number of support structures, resulting in high construction costs. Summary of the Invention

[0005] (a) Technical issues In summary, how to solve the problems of high operating energy consumption and high construction cost of traditional air-cooled condensers in the existing technology has become an urgent problem to be solved by those skilled in the art.

[0006] (II) Technical Solution The purpose of this invention is to provide an induced draft air-cooled condenser, which reduces the impact of ambient wind on the operation of the condenser unit, reduces the operating energy consumption of the condenser unit, and also reduces the construction cost of the condenser unit.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an induced draft air-cooled condenser, which includes: A heat exchanger comprising a single-row tube bundle consisting of condenser tubes; A steam distribution pipe is installed above the single-row tube bundle, and the steam distribution pipe is connected to the single-row tube bundle for steam distribution and transportation. A collection manifold is installed below the single-row tube bundle. The collection manifold is connected to each condenser tube and is used for the collection and output of condensate. An air-cooled device, comprising a fan support platform and a fan mounted on the fan support platform, wherein the fan support platform is positioned above the steam distribution pipe; The fan support platform, the steam distribution pipeline, and the heat exchanger are connected to form a self-supporting structure that can support the fan.

[0008] Preferably, in the induced draft air condenser provided by the present invention, the single-row tube bundle is composed of multiple condenser tubes arranged in the same plane, wherein each condenser tube can independently condense steam.

[0009] Preferably, in the induced draft air condenser provided by the present invention, all the condenser tubes located in the same single-row tube bundle are arranged in parallel and adjacent to each other in the same plane.

[0010] Preferably, in the induced draft air condenser provided by the present invention, all the condenser tubes located in the same single-row tube bundle are arranged in parallel and at intervals within the same plane.

[0011] Preferably, in the induced draft air condenser provided by the present invention, all the condenser tubes located in the same plane in the same single-row tube bundle are inclined in the same direction.

[0012] Preferably, in the induced draft air condenser provided by the present invention, all the condenser tubes located in the same single-row tube bundle are inclined, and two adjacent condenser tubes have the same inclination angle but opposite inclination directions.

[0013] Preferably, in the induced draft air condenser provided by the present invention, a three-dimensional coordinate system is constructed, consisting of a transverse axis X, a longitudinal axis Y, and a vertical axis Z; the bottom end of the single-row tube bundle is located in the XY plane, the condenser tube constituting the single-row tube bundle is inclined relative to the vertical axis Z along the direction of the longitudinal axis Y, and the single-row tube bundle is inclined relative to the vertical axis Z along the direction of the transverse axis X.

[0014] Preferably, in the induced draft air condenser provided by the present invention, the heat exchanger includes a plurality of single-row tube bundles, the single-row tube bundles are arranged in pairs as a unit, the bottom ends of the two single-row tube bundles in the same unit are adjacent and the top ends are separated to form a V-shaped structure; the units formed by the single-row tube bundles are arranged in a plurality of ways, forming a multi-V-shaped structure.

[0015] Preferably, in the induced draft air condenser provided by the present invention, the fan support platform is slidably connected to the steam distribution pipes on both sides of the heat exchanger, and the fan support platform is fixedly connected to the steam distribution pipes in other parts of the heat exchanger.

[0016] Preferably, in the induced draft air condenser provided by the present invention, multiple fan support platforms are provided, the fan support platforms are arranged in a direction perpendicular to the steam distribution pipe, the two sides of the fan support platform are slidably connected to the steam distribution pipe, and the middle part of the fan support platform is fixedly connected to the steam distribution pipe.

[0017] Preferably, in the induced draft air condenser provided by the present invention, when multiple fan support platforms are provided, adjacent fan support platforms are spaced apart.

[0018] Preferably, the induced draft air condenser provided by the present invention further includes a counterflow pipeline, which is disposed between the collection header and the steam distribution pipeline for the return of uncondensed steam.

[0019] Preferably, the induced draft air condenser provided by the present invention further includes a bottom support structure, with a support leg provided at the bottom of the collection header, and the single-row pipe bundle being mounted on the bottom support structure via the support leg; a structural member is designed between the lower part of the steam distribution pipe and the bottom support structure, the upper part of the structural member being fixedly connected to the lower part of the steam distribution pipe, and the lower part of the structural member being slidably connected to the bottom support structure.

[0020] Preferably, the induced draft air condenser provided by the present invention further includes a connector, which is disposed between the structural member and the support leg and is used to achieve a fixed connection between the structural member and the support leg.

[0021] (III) Beneficial Effects As described above, the present invention provides an induced draft air-cooled condenser, which includes: a heat exchanger comprising a single-row tube bundle composed of condenser tubes; a steam distribution pipe disposed above the single-row tube bundle, connected to the single-row tube bundle for steam distribution and transportation; a collection manifold disposed below the single-row tube bundle, connected to each condenser tube for condensate collection and output; and an air-cooling device comprising a fan support platform and a fan disposed on the fan support platform, the fan support platform being disposed above the steam distribution pipe; the fan support platform, the steam distribution pipe, and the heat exchanger are connected to form a self-supporting structure capable of supporting the fan.

[0022] Through the above structural design, this invention arranges multiple condenser tubes in a regular pattern to form a single-row tube bundle, which enables the single-row tube bundle to have high structural strength. Furthermore, each single-row tube bundle, and even a single condenser tube, can operate and be disassembled independently, allowing for online maintenance during equipment operation. This invention provides a fan support platform, mounting the fan above the single-row tube bundle. Using an overhead, induced draft cooling structure, the fan can be installed within the structure of the air-cooled condenser itself, eliminating the need for additional fan mounting brackets or other structures. This simplifies the structure of the air-cooled condenser while ensuring effective air cooling, thus saving manufacturing costs. Simultaneously, the fan's position above the single-row tube bundle ensures a sufficient height, reducing the impact of ambient wind on the condenser unit's operation. This structural design reduces the condenser unit's operating energy consumption and construction costs. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein: Figure 1 This is a schematic diagram of the structure of the condenser tubes in a V-shaped arrangement in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a condenser tube in one embodiment of the present invention, where the condenser tubes are arranged in a V-shape and multiple sets are provided; Figure 3 In one embodiment of the present invention, based on Figure 2 A schematic diagram of the structure when the condenser tubes are arranged in multiple rows; Figure 4 In another embodiment of the present invention, based on Figure 2 A schematic diagram of the structure when the condenser tubes are arranged in multiple rows; Figure 5This is a simplified structural diagram of a wind turbine support platform in one embodiment of the present invention; Figure 6 This is a side view of an induced draft air condenser in one embodiment of the present invention.

[0024] in, Figure 2 , Figure 3 as well as Figure 4 The difference also lies in the structure of the wind turbine support platform.

[0025] exist Figures 1 to 6 In the figures, the correspondence between the reference numerals and the component names is as follows: 1. Condenser tubes; 2. Single-row tube bundle; 3. Steam distribution pipe; 4. Collection manifold; 5. Fan support platform; 6. Fan; 7. Counterflow pipe; 8. Bottom support structure; 9. Support leg; 10. Structural component; 11. Connector; 12. Sliding connector; 13. Fixed connector. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. Indeed, those skilled in the art will recognize that modifications and variations can be made to the invention without departing from its scope or spirit. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the invention encompass such modifications and variations falling within the scope of the appended claims and their equivalents.

[0027] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0028] Please refer to Figures 1 to 6 ,in, Figure 1 This is a schematic diagram of the structure of the condenser tubes in a V-shaped arrangement in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a condenser tube in one embodiment of the present invention, where the condenser tubes are arranged in a V-shape and multiple sets are provided; Figure 3 In one embodiment of the present invention, based on Figure 2 A schematic diagram of the structure when the condenser tubes are arranged in multiple rows; Figure 4 In another embodiment of the present invention, based on Figure 2 A schematic diagram of the structure when the condenser tubes are arranged in multiple rows; Figure 5 This is a simplified structural diagram of a wind turbine support platform in one embodiment of the present invention; Figure 6 This is a side view of an induced draft air condenser in one embodiment of the present invention.

[0029] This invention provides an induced draft air-cooled condenser, which mainly includes a heat exchanger (for condensing high-temperature steam), a steam distribution pipe 3 (for transporting and distributing high-temperature steam), a collection manifold 4 (for collecting and discharging condensate, and also for returning uncondensed steam), an air-cooling device (for adding gas flow to provide cooling for the condensation of high-temperature steam), a bottom support structure 8 (for providing a base frame structure to raise and suspend other structures in this invention, ensuring operation and facilitating maintenance), and other accessories (such as bolts, T-shaped components), etc.

[0030] For the heat exchanger, the heat exchanger includes a single-row tube bundle 2 composed of condenser tubes 1. The condenser tubes 1 adopt a metal tube structure (such as copper tubes), which ensures high structural strength and excellent heat exchange capacity, improving steam condensation efficiency and effect. In the heat exchanger, the single-row tube bundle 2 consists of multiple condenser tubes 1 arranged in the same plane, wherein each condenser tube 1 can independently condense steam, that is, each condenser tube 1 is independently connected to the steam distribution pipe 3. Furthermore, the present invention can also provide a valve structure at the tube end (both ends) of each condenser tube 1, so that the conduction and cut-off of each condenser tube 1 can be individually controlled, facilitating equipment maintenance and operation control.

[0031] This invention optimizes and limits the arrangement of the condenser tubes 1 constituting the single-row tube bundle 2, and also optimizes and limits the arrangement of the single-row tube bundle 2 constituting the heat exchanger, as follows: 1. In the same single-row tube bundle 2, all condenser tubes 1 located in the same plane are arranged in parallel and adjacent to each other. All condenser tubes 1 have the same structural dimensions (the material, length and diameter of condenser tubes 1 are the same). Multiple condenser tubes 1 are arranged in parallel and closely together. The structural design of condenser tubes 1 being arranged closely and fixedly connected can improve the structural strength of the single-row tube bundle 2.

[0032] 2. In the same single-row tube bundle 2, all condenser tubes 1 located in the same plane are arranged parallel and spaced apart. Unlike the first structure described above, there is a certain gap between the condenser tubes 1. The size of this gap is not less than one-tenth and not more than half the diameter of the condenser tube 1. The gap between the condenser tubes 1 can increase the contact area between the condenser tubes 1 and the cold air, thereby improving the condensation effect and condensation efficiency. In this embodiment, the present invention can provide a support structure for fixing and connecting the various condenser tubes 1 constituting the single-row tube bundle 2 to ensure the overall structural strength and stability of the single-row tube bundle 2.

[0033] 3. In the same single-row tube bundle 2, all condenser tubes 1 located in the same plane are inclined in the same direction.

[0034] 4. In the same single-row tube bundle 2, all condenser tubes 1 located in the same plane are inclined, and two adjacent condenser tubes 1 have the same inclination angle but opposite inclination directions.

[0035] In order to better describe the third and fourth structures mentioned above, it is necessary to construct a three-dimensional coordinate system consisting of the horizontal axis X, the vertical axis Y, and the vertical axis Z. The bottom end of the single-row tube bundle 2 is located in the XY plane. The condenser tube 1 constituting the single-row tube bundle 2 is inclined relative to the vertical axis Z along the direction of the vertical axis Y, and the single-row tube bundle 2 is inclined relative to the vertical axis Z along the direction of the horizontal axis X.

[0036] When the heat exchanger includes multiple single-row tube bundles 2, the single-row tube bundles 2 are arranged in pairs as a unit. The bottom ends of the two single-row tube bundles 2 in the same unit are adjacent and the top ends are separated to form a V-shaped structure. Multiple units formed by single-row tube bundles 2 are arranged to form a multi-V-shaped structure (the structure is similar to VVV... or the structure is similar to WWW...).

[0037] The steam distribution pipe 3 is located above the single-row pipe bundle 2 and is connected to (interconnected with) the single-row pipe bundle 2 for the distribution and transportation of steam. The steam distribution pipe 3 adopts a metal pipe structure, preferably a circular pipe structure, but it can also be a square pipe structure.

[0038] As for the collecting manifold 4, it is located below the single-row tube bundle 2. The collecting manifold 4 is connected to each condenser tube 1 and is used for the collection and output of condensate. The collecting manifold 4 can adopt a regular tube structure, such as a round tube or a square tube, or it can adopt an irregular tube, such as an L-shaped right-angle tube.

[0039] In the same single-row tube bundle 2, there is a steam distribution pipe 3 and a collection manifold 4. The steam distribution pipe is fixedly connected to each condenser pipe 1 in the single-row tube bundle 2, and the collection manifold 4 is fixedly connected to each condenser pipe 1 in the single-row tube bundle 2. This can improve the structural strength of the entire single-row tube bundle 2.

[0040] The present invention also provides an air-cooling device, which includes a fan support platform 5 and a fan 6 disposed on the fan support platform 5. The fan support platform 5 adopts a metal platform structure and is disposed above the steam distribution pipe 3. The fan support platform 5, the steam distribution pipe 3 and the heat exchanger are connected to form a self-supporting structure that can support the fan 6.

[0041] Based on the above structural design, the present invention can also provide an air duct, which is disposed between the fan 6 and the single-row tube bundle 2. The air duct can concentrate the airflow during the operation of the fan 6, thereby increasing the air cooling effect on the single-row tube bundle 2.

[0042] The fan support platform 5 has a large coverage area, meaning that one fan support platform 5 can connect to multiple steam distribution pipes 3. Based on this structure, the fan support platform 5 is slidably connected to the steam distribution pipes 3 on both sides of the heat exchanger, while the fan support platform 5 is fixedly connected to the steam distribution pipes 3 in other parts of the heat exchanger. Alternatively, multiple fan support platforms 5 can be provided, arranged perpendicular to the steam distribution pipes 3, with their sides slidably connected to the steam distribution pipes 3 and their center fixedly connected to the steam distribution pipes 3. Furthermore, when multiple fan support platforms 5 are provided, adjacent fan support platforms 5 are spaced apart.

[0043] High-temperature steam is condensed through condenser 1, and uncondensed steam will inevitably exist. Therefore, the present invention also provides a counterflow pipe 7, which is set between the collection manifold 4 and the steam distribution pipe 3 for the return of uncondensed steam.

[0044] The present invention also provides a bottom support structure 8, with a support leg 9 provided at the bottom of the collecting manifold 4, and the single-row pipe bundle 2 mounted on the bottom support structure 8 via the support leg 9; a structural member 10 is designed between the lower part of the steam distribution pipe 3 and the bottom support structure 8, the upper part of the structural member 10 is fixedly connected to the lower part of the steam distribution pipe 3, and the lower part of the structural member 10 is slidably connected to the bottom support structure 8. Furthermore, a connector 11 is also included, which is disposed between the structural member 10 and the support leg 9 and is used to achieve a fixed connection between the structural member 10 and the support leg 9.

[0045] The induced draft air-cooled condenser provided by this invention adopts a single-row tube bundle 2 structure and a self-supporting structure. The single-row tube bundle 2 refers to multiple condenser tubes 1 arranged regularly within the same group (side-by-side in the same plane to form a tube bundle structure). The self-supporting structure means that a certain structure of the induced draft air-cooled condenser supports other structures, eliminating the need for additional support frames or other supporting structures. For example, a single row of tubes can be used to support an air-cooled device. Furthermore, the induced draft air-cooled condenser includes a single row or a series of regularly arranged adjacent rows forming a V-shape heat exchanger structure.

[0046] In this invention, the heat exchanger includes a single-row tube bundle 2, which is composed of multiple regularly arranged condenser tubes 1. In this invention, a single-row tube bundle 2 is composed of multiple condenser tubes 1. Within the same single-row tube bundle 2, the multiple condenser tubes 1 are arranged parallel to each other in the same plane. Adjacent condenser tubes 1 can be arranged in contact (i.e., connected in contact) to increase the structural strength of the single-row tube bundle 2. Alternatively, the condenser tubes 1 can be arranged with intervals (adjacent condenser tubes 1 have a certain gap) to increase the ventilation volume of the single-row tube bundle 2. The greater the ventilation volume, the better the condensation cooling effect. In another embodiment of this invention, within the same single-row tube bundle 2, multiple condenser tubes 1 are arranged in the same plane. The condenser tubes 1 are grouped in pairs, and the two condenser tubes 1 in the same group are arranged in a V-shape within the plane. Multiple groups of condenser tubes 1 are arranged sequentially.

[0047] A single-row tube bundle 2 is composed of multiple condenser tubes 1. The single-row tube bundle 2 adopts a self-supporting structure. One or more single-row tube bundles 2 are arranged obliquely in a plane (XZ plane) formed by the vertical axis Z and the horizontal axis X (adjacent single-row tube bundles 2 are mirror images of each other, i.e., they are inclined to both sides relative to a certain vertical line, and the included angle with the vertical line is the same). The included angle between two single-row tube bundles 2 in the same group is α, where 56° < α < 65°. Two rows of single-row tube bundles 2 form a V-shaped arrangement, four rows of single-row tube bundles 2 form a W-shaped arrangement, or multiple rows of single-row tube bundles 2 form a VVV…V (multiple V-shaped or multiple W-shaped) arrangement. The above-mentioned V-shaped or W-shaped structures of single-row tube bundles 2 have structural differences, which are reflected in the different fixed connection methods and sliding connection methods with other structures. The above structure limits the structural layout of the condenser tubes 1 in this invention.

[0048] The present invention also includes a steam distribution pipe 3, which is located above the single-row tube bundle 2 and connected to the upper end of the single-row tube bundle 2 (airtight connection, which can realize steam transmission), and transmits steam to each condenser tube 1 of the single-row tube bundle 2.

[0049] The invention also includes a collection manifold 4, located below and connected to the lower end of the single-row pipe bundle 2 (for collecting condensate). The collection manifold 4 collects condensate (steam condenses into condensate after passing through the condenser pipe 1). A counter-current pipe bundle is also provided between the collection manifold 4 and the steam distribution pipe 3, allowing uncondensed steam to return to the steam distribution pipe 3 within the collection manifold 4. The steam distribution pipe 3 and the collection manifold 4 extend along the X-direction, perpendicular to the ZY plane.

[0050] The above-mentioned single-row tube bundle 2, consisting of condenser tube 1, forms a steam condensation system with the steam distribution pipe 3, the collection manifold 4, and the counterflow tube bundle (which can also realize the return of uncondensed steam).

[0051] This invention includes an air-cooling device comprising one or more fans 6, which are positioned above a single-row pipe bundle 2. The fans 6 are induced draft, guiding air through the single-row pipe bundle 2 to cool the steam within it. Above the single-row pipe bundle 2, a steam distribution pipe 3 is also positioned. Specifically, the steam distribution pipe 3 is positioned below the air-cooling device (between the single-row pipe bundle 2 and the air-cooling device). One or more fan support assemblies are positioned above the steam distribution pipe 3 to support the air-cooling device. Each fan support assembly can be individually installed (when the air-cooling device has multiple fans 6, one fan support assembly can be installed for each fan 6). These fan support assemblies form a fan support platform 5 (a complete structure supporting the entire air-cooling device).

[0052] Support structures are provided at the head and tail ends (i.e. both ends of the single-row pipe bundle 2) of each column of single-row pipe bundle 2. The upper part of the support structure is fixedly connected to the steam distribution pipe 3, and the lower part of the support structure (i.e. structural component 10) is fixedly connected to the lower support leg 9 of the single-row pipe bundle 2 and slidably connected to the bottom support structure 8. The structural component 10, the single-row pipe bundle 2 and the air-cooling device constitute an integral structure. This integral structure can move on the bottom support structure 8 with temperature changes.

[0053] The beneficial effects of this invention are summarized as follows: 1. The single-row pipe bundle 2 and the collection manifold 4 are fixedly connected to form a whole. A support leg 9 is provided at the lower part of the collection manifold 4, and a steam distribution pipe 3 is provided at the upper end of the single-row pipe bundle 2. This allows the single-row pipe bundle 2 and the collection manifold 4 to support the steam distribution pipe 3, forming a self-supporting structure. 2. The single-row pipe bundle 2 is arranged in a V-shape. The steam distribution pipe 3 is connected to the upper part of the single-row pipe bundle 2, and the lower part of the fan support assembly is connected to the steam distribution pipe 3. The fan support assembly forms a rigid self-supporting structure to support the fan 6, the fan 6 motor, and the mechanical drive, thus eliminating the need to construct other frame structures to support the air-cooled device. 3. By connecting the fan support assembly and the steam distribution pipe 3, the single-row pipe bundle 2 is structurally constrained, increasing... 4. The stability of the single-row tube bundle 2 in the horizontal direction is improved by setting vertical limiting support structures at both ends (head and tail ends) of the single-row tube bundle 2; 5. A fan support platform 5 is set up to facilitate the inspection and maintenance of the air-cooling device; 6. The air-cooling device is set above the single-row tube bundle 2, and the airflow is accelerated to cool the single-row tube bundle 2 by induced draft. The windbreak wall that must be set in the blower structure is eliminated, the structure of the condenser is simplified, and the cost is reduced. At the same time, the air-cooling device is placed above the single-row tube bundle 2 (the highest component set in this invention), which can also reduce the impact of ambient wind on its operation; 7. A self-supporting structure is adopted between the single-row tube bundle 2 and the fan support platform 5, which saves steel in the structural part and reduces the cost.

[0054] In one specific embodiment of the present invention, such as Figure 1 As shown.

[0055] In the overall structural design of the heat exchanger, the arrangement of the single-row tube bundle 2 is as follows: it includes one or more single-row tube bundles 2 (divided into two groups, one inclined to the left and the other inclined to the right). When there are multiple groups of single-row tube bundles 2, one or two groups form a unit. The two single-row tube bundles 2 in the same unit are inclined in the plane (XZ) formed by the vertical axis Z and the horizontal axis X. The included angle between the two single-row tube bundles 2 in the same unit is α, where 56° < α < 65°. The two single-row tube bundles 2 in the same unit form a V-shaped arrangement. When there are multiple units, the single-row tube bundles 2 form a W-shaped arrangement. The upper part of the single-row tube bundle 2 is connected to the steam distribution pipe 3, and the lower part is connected to the collection manifold 4. The lower part of the steam manifold is provided with a support leg 9. The steam distribution pipe 3 and the collection manifold 4 extend longitudinally in the direction of the heat exchanger column (i.e., extend along the longitudinal axis Y).

[0056] Please refer to Figure 3In this invention, the fan support platform 5 is arranged above the steam distribution pipe 3, and the single-row pipe bundle 2 is arranged in a V-shape. The upper part of the steam distribution pipe 3 and the single-row pipe bundle 2 are connected, and the lower part of the fan support platform 5 is connected to the steam distribution pipe 3. The above structure can form a rigid self-supporting structure for supporting the weight of the fan 6, the fan 6 motor and mechanical drive.

[0057] Please refer to Figure 3 In this invention, the fan support platform 5 extends along the transverse axis X and connects to all the steam distribution pipes 3 under its coverage area (the area covered by the projected surface directly below the fan support platform 5 when it is horizontally positioned). One fan support platform 5 supports one or more fans 6. When the fan support platform 5 is connected to the steam distribution pipes 3 parallel to the top, the weight of the fan support platform 5, the fans, and their motorized devices is supported by single-row pipe bundles 2 (at this time, the single-row pipe bundle 2 units form a V-shaped or W-shaped structure). The fan support platform 5 is typically a square or rectangular platform, composed of multiple support beams and cover plates. A circular opening for placing the fans 6 is provided on the fan support platform 5. Simultaneously, the fan support platform 5 also provides a fan 6 cable tray and maintenance access, allowing personnel to approach the fans 6 for maintenance and other work.

[0058] When steam begins to flow through the top steam distribution pipe 3, the temperature of the steam distribution pipe 3 rises from the ambient temperature to a temperature close to the steam temperature, thus causing thermal expansion deformation. To address the temperature stress generated between the fan support platform 5 and the steam distribution pipe 3 (temperature changes cause deformation of components; due to differences in temperature and material, the deformation varies, resulting in deformation force, i.e., the aforementioned temperature stress), a fixed connector 13 is used to securely connect the middle position of the fan support platform 5 to the top steam distribution pipe 3. This allows the fan support platform 5 to expand longitudinally along with the steam distribution pipe 3 as the temperature rises. Considering that the steam distribution pipes 3 connected to both sides of the fan support platform 5 may not be operational (i.e., the temperature is ambient), sliding connectors 12 are used to achieve a sliding connection between the two sides of the fan support platform 5 and the top steam distribution pipe 3. The fan support platform 5 will then freely expand longitudinally in the Y direction along with the middle steam distribution pipe 3. Simultaneously, a gap (A) is provided between the fan support platforms 5 to form an expansion gap, allowing the fan support platform 5 to also expand freely in the X direction.

[0059] Please refer to Figure 5In this invention, the fan support platform 5 is provided with an opening for installing the fan duct. In addition to the opening, other parts of the upper surface of the fan support platform 5 are designed with a metal cover sealing structure, so that air can only flow out of the air condenser through the fan duct. The fan support platform 5 is designed with a fan 6 bridge and maintenance passage. The fan 6 and motor and other mechanical equipment are installed on the fan 6 bridge. Personnel can access the fan 6 and motor and other mechanical equipment through the fan 6 bridge and maintenance passage to perform maintenance and other work.

[0060] The basic design principle of this invention is as follows: a single row of pipe bundles 2 arranged in a V-shape or W-shape is set up; the steam distribution pipes 3 and the fan support platform 5 are combined into a whole to form a self-supporting structure; the overall vertical (Z-direction) stiffness is increased by adding a support beam between the fan support platform 5 and the bottom support structure 8.

[0061] Please refer to Figure 6 In this invention, steam enters the co-current tube bundle 2 above the steam distribution pipe 3 (steam flows downwards and condensate flows downwards) for condensation. The condensed condensate is discharged into the condensate pipe at the bottom of the collection manifold 4. A portion of the uncondensed steam flows into the counter-current tube bundle through the collection manifold 4 (steam flows upwards and condensate flows downwards). The condensed condensate is discharged into the condensate pipe at the bottom of the collection manifold 412. The steam flows in a streamline, as indicated by the arrow in the attached diagram. Non-condensable gases in the system are extracted (discharged or re-entering the condensation cycle) at the top of the counter-current tube bundle.

[0062] To enhance the horizontal rigidity (Y-direction) of the assembly consisting of the V-shaped tube bundle, steam distribution pipe 3, and fan support platform 5, a structural member 10 is designed between the lower part of the steam distribution pipe 3 and the bottom support structure 8. The upper part of this structural member 10 is fixedly connected to the lower part of the steam distribution pipe 3, while the lower part of the structural member 10 is slidably connected to the bottom support structure 8. Simultaneously, the lower part of the structural member 10 is fixedly connected to the support leg 9 via the structural member 10. During operation, the air-cooled condenser provided by this invention will expand in the Y-direction due to temperature increases. The support leg 9 located in the middle of the bottom support structure 8 will be fixedly connected to the bottom support structure 8, while the other support legs 9 will be slidably connected to the bottom structure. The bottom structure can be made of steel or concrete, and its height depends on the size of the air-cooled condenser.

[0063] As described above, the present invention provides an induced draft air-cooled condenser, which includes: a heat exchanger comprising a single-row tube bundle 2 composed of condenser tubes 1; a steam distribution pipe 3 disposed above the single-row tube bundle 2, the steam distribution pipe 3 being connected to the single-row tube bundle 2 for steam distribution and transportation; a collection manifold 4 disposed below the single-row tube bundle 2, the collection manifold 4 being connected to each condenser tube 1 for the collection, aggregation, and output of condensate; and an air-cooling device comprising a fan support platform 5 and a fan 6 disposed on the fan support platform 5, the fan support platform 5 being disposed above the steam distribution pipe 3; the fan support platform 5, the steam distribution pipe 3, and the heat exchanger are connected to form a self-supporting structure capable of supporting the fan 6.

[0064] Through the above structural design, this invention arranges multiple condenser tubes 1 in a regular pattern to form a single-row tube bundle 2. This allows the single-row tube bundle 2 to possess high structural strength, and each single-row tube bundle 2, or even a single condenser tube 1, can operate and be disassembled independently, enabling online maintenance during equipment operation. This invention provides a fan support platform 5, on which a fan 6 is installed above the single-row tube bundle 2. Using an overhead, induced draft cooling structure, the fan 6 can be installed within the structure of the air-cooled condenser itself, eliminating the need for a dedicated mounting bracket or other structure for the fan 6. This simplifies the structure of the air-cooled condenser while ensuring effective air cooling, thus saving manufacturing costs. Furthermore, the fan 6's placement above the single-row tube bundle 2 ensures a sufficient height, reducing the impact of ambient wind on the condenser unit's operation. This structural design reduces the condenser unit's operating energy consumption and construction costs.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An induced draft air condenser, characterized in that, include: A heat exchanger comprising a single-row tube bundle (2) consisting of condenser tubes (1); A steam distribution pipe (3) is installed above the single-row pipe bundle. The steam distribution pipe is connected to the single-row pipe bundle and is used for steam distribution and transportation. The collection manifold (4) is located below the single-row tube bundle. The collection manifold is connected to each condenser tube and is used for the collection and output of condensate. The air-cooled device includes a fan support platform (5) and a fan (6) disposed on the fan support platform, wherein the fan support platform is disposed above the steam distribution pipe; The fan support platform, the steam distribution pipeline, and the heat exchanger are connected to form a self-supporting structure that can support the fan.

2. The induced draft air condenser according to claim 1, characterized in that, The single-row tube bundle consists of multiple condenser tubes arranged in the same plane, wherein each condenser tube can independently condense steam.

3. The induced draft air condenser according to claim 2, characterized in that, In the same single-row tube bundle, all the condenser tubes located in the same plane are arranged in parallel and adjacent to each other; Alternatively, in the same single-row tube bundle, all the condenser tubes located in the same plane are arranged in parallel and at intervals; Alternatively, in the same single-row tube bundle, all the condenser tubes located in the same plane are inclined in the same direction; Alternatively, in the same single-row tube bundle, all the condenser tubes located in the same plane are inclined, and two adjacent condenser tubes have the same inclination angle but opposite inclination directions.

4. The induced draft air condenser according to claim 3, characterized in that, Construct a three-dimensional coordinate system consisting of the horizontal axis X, the vertical axis Y, and the vertical axis Z; The bottom end of the single-row tube bundle is located in the XY plane. The condenser tubes constituting the single-row tube bundle are inclined relative to the vertical axis Z along the longitudinal axis Y, and the single-row tube bundle is inclined relative to the vertical axis Z along the transverse axis X.

5. The induced draft air condenser according to claim 4, characterized in that, The heat exchanger includes multiple single-row tube bundles, with two single-row tube bundles forming a unit. The two single-row tube bundles in the same unit are adjacent at the bottom and separated at the top to form a V-shaped structure. Multiple units are formed by the single-row tube bundle, forming a multi-V-shaped structure.

6. The induced draft air condenser according to claim 1, characterized in that, The fan support platform is slidably connected to the steam distribution pipes on both sides of the heat exchanger, and the fan support platform is fixedly connected to the steam distribution pipes in other parts of the heat exchanger. Alternatively, multiple fan support platforms may be provided, with each fan support platform arranged in a direction perpendicular to the steam distribution pipe. The two sides of each fan support platform are slidably connected to the steam distribution pipe, and the middle part of each fan support platform is fixedly connected to the steam distribution pipe.

7. The induced draft air condenser according to claim 6, characterized in that, When multiple wind turbine support platforms are provided, adjacent wind turbine support platforms are spaced apart.

8. The induced draft air condenser according to claim 1, characterized in that, It also includes a counterflow pipe (7), which is located between the collection manifold and the steam distribution pipe for the return of uncondensed steam.

9. The induced draft air condenser according to claim 1, characterized in that, It also includes a bottom support structure (8), with a support leg (9) provided at the bottom of the collection manifold, and the single-row pipe bundle is mounted on the bottom support structure through the support leg; A structural member (10) is designed between the lower part of the steam distribution pipe and the bottom support structure. The upper part of the structural member is fixedly connected to the lower part of the steam distribution pipe, and the lower part of the structural member is slidably connected to the bottom support structure.

10. The induced draft air condenser according to claim 9, characterized in that, It also includes a connector (11), which is disposed between the structural member and the leg and is used to achieve a fixed connection between the structural member and the leg.

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