Advanced large scale field erected air cooled industrial steam condenser

Abstract

The present invention relates to large scale field erected air cooled industrial steam condensers having a heat exchanger tube bundle configured in integral secondary sections located in the center of the heat exchanger flanked by identical primary condenser sections. A bottom head serves to deliver steam to the bottom ends of the primary condenser tubes and to receive condensate formed in these same tubes. Uncondensed steam and non-condensibles flow from the primary condenser tubes to a top head and toward the center of the heat exchanger tube bundle where they enter the secondary condenser section tubes. Non-condensibles and condensate formed in the secondary section tubes enter a secondary bottom head inside the primary bottom head and are withdrawn from the secondary bottom head via outlet nozzles.

Description

[0001] This invention application is a divisional application of the invention entitled "Advanced Large-Scale On-Site Air-Cooled Industrial Steam Condenser" with application number "201980071281.0" and application date "September 6, 2019". Technical Field

[0002] This invention relates to large-scale on-site installation of air-cooled industrial steam condensers. Background Technology

[0003] A typical large-scale, field-mounted air-cooled industrial steam condenser consists of heat exchange tube bundles arranged in an A-frame configuration on a large fan, with one A-frame per fan. Each tube bundle typically comprises 35 to 45 vertically oriented, flat-finned tubes, each approximately 11 meters long, 200 mm high (with semi-circular front and rear edges), and 18 mm to 22 mm in external width. Each A-frame typically includes five to seven tube bundles per side.

[0004] The typical A-frame ACC described above also includes a first-stage or “primary” condenser tube bundle (sometimes called the K-bundle of the Kondensor) and a second-stage or “secondary” condenser tube bundle (sometimes called the D-bundle of the Dephlegmator). Approximately 80% to 90% of the heat exchanger tube bundle is a first-stage or primary condenser. Steam enters at the top of the primary condenser tube bundle, and condensate and some steam exit at the bottom. In the first stage, steam and condensate travel downwards from the heat exchanger tube bundle, and this process is often referred to as the co-flow condensation stage. The first stage is configured to be thermally efficient; however, it does not provide appliances for removing non-condensable gases. To purge non-condensable gases that have passed through the first-stage tube bundle, 10% to 20% of the heat exchanger tube bundle is configured as a second-stage or secondary condenser, typically dispersed between the primary condenser and drawing steam from the lower condensate manifold. In this arrangement, steam and non-condensable gases travel through the first-stage condenser as they are drawn to the bottom of the secondary condenser. As the gas mixture travels upwards through the secondary condenser, the remainder of the vapor condenses, causing non-condensable gases to accumulate at the top, while the condensate is discharged to the bottom. This process is commonly referred to as the counter-current condensation stage. The top of the secondary condenser is attached to a vacuum manifold that removes non-condensable gases from the system.

[0005] Variations of the standard prior art ACC arrangement have been disclosed, for example, in US 2015 / 0204611 and US 2015 / 0330709. These applications show the same finned tubes, but significantly shortened, and then arranged in a series of small A-frames, typically five to six A-frames per fan. Part of the logic is to reduce the steam-side pressure drop; this has a small impact on overall capacity under summer conditions but a larger impact under winter conditions. Another part of the logic is to save on costly on-site welding labor by welding the top steam manifold piping to each tube bundle at the plant and transporting the instrument. With the steam manifold attached at the plant and transported with the tube bundle, the net effect of this arrangement is a reduction in tube length to accommodate the manifold in the transport container.

[0006] Additional variations of the prior art ACC arrangement are disclosed, for example, in US 2017 / 0363357 and US 2017 / 0363358. These applications disclose a novel tube configuration for use in ACCs with a cross-sectional height of 10 mm or less. US 2017 / 0363357 also discloses a novel ACC arrangement with heat exchanger tube bundles, wherein the primary condenser tube bundles are arranged horizontally along the longitudinal axis of the tube bundles, and the secondary tube bundles are arranged parallel to the transverse axis. US 2017 / 0363358 discloses an ACC arrangement in which all tube bundles are secondary tube bundles. Summary of the Invention

[0007] The present invention is a novel and improved design for large-scale on-site air-cooled industrial steam condensers for power plants and other applications, which provides significant improvements and advantages over existing ACC technologies.

[0008] According to the invention, the heat exchanger panel is constructed as an integral secondary condenser section located at the center of the heat exchanger panel and laterally connected to a primary condenser section, which may be identical or non-identical to each other. A bottom cover extends along the bottom length of the heat exchanger panel, which is connected to the bottom side of a bottom tube sheet for delivering steam to the bottom ends of the primary condenser tubes. In this arrangement, the first stage of condensation occurs in counter-current operation. The top of the tubes is connected to a top tube sheet, which in turn is connected to the top cover on its top side. Uncondensed steam and non-condensable matter flow from the primary condenser tubes to the top cover and flow toward the center of the heat exchanger panel, where they enter the top of the secondary condenser section tubes. In this arrangement, the second stage of condensation occurs in co-current operation. Non-condensable matter and condensate flow out of the bottom of the secondary tubes into an internal secondary chamber located inside the bottom cover. Non-condensable and condensable materials are drawn from the secondary chamber of the bottom cover via the outlet nozzle, and condensable materials are extracted and sent to combine with the water collected from the primary condenser section.

[0009] According to an alternative embodiment, the heat exchanger panel may be configured as a single-stage condenser heat exchanger panel, wherein all tubes of the heat exchanger panel receive steam from a bottom cover and deliver condensate to the bottom cover, and non-condensable material is extracted via a top cover.

[0010] According to another embodiment of the invention, each unit or module of the ACC is fed via a single riser that delivers its steam to a large horizontal cylinder or upper steam distribution manifold, which is suspended from and directly below the tube bundle support frame, perpendicular to the longitudinal axis of the heat exchanger panels and below the center point of each heat exchanger panel. The upper steam distribution manifold feeds steam to the bottom cover of each heat exchanger panel at a single location at the center point of the tube bundle.

[0011] According to another embodiment of the invention, the condenser section frame and heat exchanger panel are pre-assembled on the ground. The condenser section frame is then supported on an assembly fixing device, which is high enough to allow the upper steam distribution manifold to hang over the bottom side of the condenser section frame. Separately, the chamber section, including the fan platform and fan assembly corresponding to the condenser section / unit, is also assembled on the ground. Sequentially or simultaneously, the lower structure corresponding to the condenser section / unit can be assembled in its final position. The condenser section, with the upper steam distribution manifold hanging from it, can then be lifted as a whole and placed on top of the lower structure, followed by a similar lifting and placement of the complete chamber section sub-assemblies.

[0012] This novel ACC design can be used with pipes having prior art cross-sectional configurations and areas (200 mm × 18 mm to 22 mm). Alternatively, this novel ACC design can be used with pipes having the designs described in US 2017 / 0363357 and US 2017 / 0363358 (200 mm × 10 mm or smaller), the disclosures of which are hereby incorporated in their entirety.

[0013] According to another alternative embodiment, the novel ACC design of the present invention can be used with 100mm × 5mm to 7mm tubes having biased fins.

[0014] According to another embodiment, the novel ACC design of the present invention can be used with a 200mm × 5mm to 7mm tube or a 200mm × 17mm to 20mm tube, which preferably has “arrow” shaped fins arranged at 5 to 12 fins per inch (fpi), preferably 9 to 12 fpi and most preferably 9.8 fins per inch.

[0015] According to another embodiment, the novel ACC design of the present invention can be used with a 120mm × 5mm to 7mm tube having "arrow"-shaped fins arranged at 9.8 fins per inch. According to yet another embodiment, the novel ACC design of the present invention can be used with a 140mm × 5mm to 7mm tube having "arrow"-shaped fins arranged at 9.8 fins per inch. While the 120mm and 140mm configurations do not differ from the 200mm configuration in terms of capacity increase, both the 120mm and 140mm configurations offer reduced material and weight compared to the 200mm design.

[0016] The disclosure regarding the structure of the arrow-shaped fins discussed above is incorporated herein in its entirety from the disclosure of U.S. Application No. 15 / 425,454, filed February 6, 2017.

[0017] According to yet another embodiment, the novel ACC design of the present invention can be used with tubes having “louvered” fins, which have roughly the same performance as offset fins and are more readily available and easier to manufacture. Attached Figure Description

[0018] Figure 1 is a perspective view of the heat exchange section of a conventional large-scale on-site air-cooled industrial steam condenser.

[0019] Figure 2 is a partial exploded close-up view of the heat exchange section of a conventional large-scale on-site air-cooled industrial steam condenser, showing the orientation of the tubes relative to the steam distribution manifold.

[0020] Figure 3A side view of a heat exchanger panel according to one embodiment of the present invention.

[0021] Figure 4 for Figure 3 Top view of the heat exchanger panel shown.

[0022] Figure 5 for Figure 3 Bottom view of the heat exchanger panel shown.

[0023] Figure 6 For along line CC Figure 3 The heat exchanger panel shown is a cross-sectional view.

[0024] Figure 7 For along line DD Figure 3 The heat exchanger panel shown is a cross-sectional view.

[0025] Figure 8 For the line EE Figure 3 The heat exchanger panel shown is a cross-sectional view.

[0026] Figure 9 A side front view of the heat exchanger panel and the upper steam distribution manifold according to an alternative embodiment of the invention.

[0027] Figure 10A For along Figure 9 A sectional view of line AA.

[0028] Figure 10B for Figure 10A Alternative embodiments of the illustrated examples.

[0029] Figure 11 According to one embodiment of the present invention, it has a flat screen panel. Figure 9 A cross-sectional view of the bottom cover of the type shown.

[0030] Figure 12 According to one embodiment of the present invention, a device having a curved shielding plate is provided. Figure 9 A cross-sectional view of the bottom cover of the type shown.

[0031] Figure 13A A side view of a large-scale field-mounted air-cooled industrial steam condenser according to one embodiment of the present invention, the large-scale field-mounted air-cooled industrial steam condenser having a novel steam delivery and distribution configuration.

[0032] Figure 13B for Figure 13A The diagram shows a plan of a large-scale on-site installation of an air-cooled industrial steam condenser.

[0033] Figure 14 for Figure 13A and Figure 13BThe image shows a close-up side view of one unit of a large-scale on-site air-cooled industrial steam condenser.

[0034] Figure 15 for Figure 13A , Figure 13B and Figure 14 Another close-up side view of one unit of a large-scale on-site air-cooled industrial steam condenser shown.

[0035] Figure 16 According to one embodiment of the invention, a front view of the upper steam distribution manifold and its connection (including condensate pipes) from the secondary bottom cover to the heat exchanger panel is provided.

[0036] Figure 17 Figure 13 to Figure 15 Another close-up side view of a unit of a large-scale field-installed air-cooled industrial steam condenser, showing end views of two pairs of heat exchanger panels.

[0037] Figure 18A This is a set of engineering drawings illustrating a suspension rod in a cold position according to an embodiment of the present invention.

[0038] Figure 18B A set of engineering drawings showing the thermal locations Figure 18A The suspension rod.

[0039] Figure 19A This is a set of engineering drawings illustrating a suspension rod in a cold position according to a different embodiment of the invention.

[0040] Figure 19B A set of engineering drawings showing the thermal locations Figure 19A The suspension rod.

[0041] Figure 20A A top perspective view of a single pre-assembled condenser section module is shown, which includes an upper positive steam distribution manifold suspended from it.

[0042] Figure 20B A bottom perspective view of a single pre-assembled condenser section module is shown, which includes an upper positive steam distribution manifold suspended from it.

[0043] Figure 21A It shows the corresponding Figure 20A and Figure 20B The top perspective view of the fan platform and fan (gas chamber) subassembly of a single unit of the condenser section module shown.

[0044] Figure 21B It shows the corresponding Figure 20A and Figure 20BThe bottom perspective view of the fan platform and fan (gas chamber) sub-assembly of a single unit of the condenser section module shown.

[0045] Figure 22 It shows the corresponding Figure 20A and Figure 20B A perspective view of the tower frame of a single unit of the condenser section module shown.

[0046] Figure 23 It shows the upgrade to Figure 22 On the tower frame Figure 20A and Figure 20B The placement of pre-assembled condenser section modules.

[0047] Figure 24 It shows the installation at Figure 23 The top of the tower section and condenser section module Figure 21A and Figure 21B The placement of the fan platform and fan (air chamber) sub-assemblies.

[0048] The features in the accompanying drawings are numbered using the reference numerals below:

[0049] 2. Heat exchanger panel; 10. Top tube sheet;

[0050] 4. Primary condenser section; 12. Top cover;

[0051] 6. Secondary condenser section; 14. Bottom tube sheet;

[0052] 7 tubes; 15 lifting / support corners;

[0053] 8. Condenser tube bundle; 16. Bottom cover;

[0054] 18 Steam inlet / condensate outlet; 34 ACC unit street / row;

[0055] 20. Screen cover panel; 36. Frame (tube bundle section);

[0056] 21. Perforation; 37. Condenser section module;

[0057] 22 fan-shaped edges; 40 deflector shield;

[0058] 24 secondary bottom covers; 42 condensate piping;

[0059] 26 nozzles, 50 hangers;

[0060] (For secondary bottom cover); 54 suspension rod;

[0061] 27ACC unit / module; 56 suspension sleeve;

[0062] 28. Steam manifold; 58. Hanger mounting plate or knob;

[0063] 29 Y-shaped nozzle; 60 Hanger recess;

[0064] 30 risers (LSM to USM); 62 lower structure modules;

[0065] 31 Turbine exhaust pipe; 64 Air chamber section module;

[0066] 32 Lower steam distribution manifold. Detailed Implementation

[0067] refer to Figures 3 to 8 The heat exchanger panel 2 of the present invention includes two primary condenser sections 4, which are laterally connected to an integrated and centrally positioned secondary condenser section 6. Each heat exchanger panel 2 includes multiple independent condenser tube bundles 8, wherein the condenser tube bundles 8 of a first subgroup constitute the centrally positioned secondary section 6, and different condenser tube bundles 8 of a second subgroup constitute each laterally connected to the primary section 4. The tubes 7 of the primary and secondary sections are preferably identical in size and construction. At their top, all tubes 7 of both the primary section 4 and the secondary section 6 are joined to a top tube sheet 10, on which a hollow top cover 12 is situated, extending along the top length of the heat exchanger panel 2. The bottom of all tubes 7 of the primary section 4 and the secondary section 6 are connected to a bottom tube sheet 14, which forms the top of a bottom cover 16. The bottom cover 16 also extends along the length of the heat exchanger panel 2. The bottom cover 16 is in direct fluid communication with the pipe 7 of the primary section 4, but not with the pipe of the secondary section 6. The bottom cover 16 is fitted at the midpoint of its length with a single steam inlet / condensate outlet 18, which receives all the steam from the heat exchanger panel 12 and serves as an outlet for the condensate collected from the primary section 4. The bottom of the bottom cover 16 is preferably angled downwards at an angle between 1 and 5 degrees (preferably about 3 degrees) relative to the horizontal direction from both ends of the cover 16 toward the steam inlet / condensate outlet 18 at the midpoint of the heat exchanger panel 2. According to a preferred embodiment and with reference to… Figures 9 to 12 The bottom cover 16 may include a shield plate 20 to separate the condensate stream from the vapor stream. The shield plate 20 may have perforations 21 and / or fan-shaped edges 22 or other openings or configurations to allow condensate to fall onto the top of the shield plate 20, enter the space below the shield plate, and flow towards the inlet / outlet 18 below the shield plate. When viewed from the end of the bottom cover 16, the shield plate 20 is fixed at a near-horizontal angle (between the horizontal direction and 12 degrees from the horizontal direction in the transverse direction) to maximize the cross-section provided by the bottom cover 16 to the vapor stream. The shield plate 20 may be as follows: Figure 11The top tube sheet 12 and bottom tube sheet 15 can be assembled with lifting / supporting corners 15 for lifting and / or supporting the heat exchanger 2.

[0068] An internal secondary chamber or secondary bottom cover 24 is fitted inside the bottom cover 16 and extends the length of the secondary section 6 (but preferably not beyond it). The internal secondary chamber or secondary bottom cover 24 is in direct fluid communication only with the tube 7 of the secondary section 6. The secondary bottom cover 24 is equipped with a nozzle 26 to recover non-condensable and condensable materials.

[0069] The steam inlet / condensate outlet 18 of heat exchanger panel 2 and the steam inlet / condensate outlet 18 of all heat exchanger panels in the same ACC unit / module 27 are connected to a large cylinder or upper steam distribution manifold 28, which hangs below heat exchanger panel 2 and extends perpendicular to the longitudinal axis of heat exchanger panel 2 at its midpoint. See, for example, Figures 13 to... Figure 15 , Figure 20A and Figure 20B The upper steam distribution manifold 28 extends across the width of the unit / module 27 and closes at both ends. At its bottom center, the upper steam distribution manifold 28 connects to a single riser 30, which in turn connects to the lower steam distribution manifold 32 at its bottom. With its top surface passing below the center point of each heat exchanger panel 2, the upper steam distribution manifold 28 is fitted with Y-shaped nozzles 29, which connect to the steam inlet / condensate outlet 18 at the bottom of each adjacent pair of heat exchanger panels 2.

[0070] According to this configuration, each unit 27 of the ACC receives steam from a single riser 30. The single riser 30 feeds steam to a single upper steam distribution manifold 28 that hangs directly below the center point of each heat exchanger panel 2, and the upper steam distribution manifold 28 feeds steam to each of the heat exchanger panels 2 in the unit 27 via a single steam inlet / condensate outlet 18.

[0071] Therefore, steam from the industrial process travels along the turbine discharge pipe 31 at or near the ground or at any elevation suitable for the site layout. As the steam pipe 31 approaches the ACC of the present invention, it splits into multiple sub-pipes (lower steam distribution manifolds 32), one sub-pipe for each street (unit row) 34 of the ACC. Each lower steam distribution manifold 32 travels below the unit 34 of its corresponding street and causes a single riser 30 to extend upward at the center point of each unit 27. See, for example... Figure 13A and Figure 13B A single riser 30 is connected to the bottom of the upper steam distribution manifold 28, which is suspended from the frame 36 of the condenser section module 37, as shown in Figures 13 to 14. Figure 15 The upper steam distribution manifold 28 delivers steam through multiple Y-shaped nozzles 29 to a pair of shroud inlets / outlets 18 of each adjacent pair of heat exchanger panels 2. Figures 15 to 17 Steam travels along the bottom cover 16 and upwards through the pipe 7 of the primary section 4, where it condenses as air passes through the finned tube 7 of the primary condenser section 4. Condensate flows counter-currently downwards from the same pipe 7 of the primary section 4, collects in the bottom cover 16, and is eventually discharged in reverse through the upper steam distribution manifold 28 and the lower steam distribution manifold 32, as well as the turbine exhaust pipe 31, to a condensate collection tank (not shown). According to a preferred embodiment, the connection between the bottom cover 16 and the upper steam distribution manifold 28 may be fitted with a deflector shield 40 to separate the discharged / falling condensate from the incoming steam.

[0072] Uncondensed steam and non-condensable matter are collected in the top cover 12 and drawn to the center of the heat exchanger panel 2, where they travel downwards from the pipes 7 of the secondary section 6 along with the condensate formed therein. Non-condensable matter is drawn to the secondary bottom cover 24 and exits through the outlet nozzle 26, located inside the bottom cover 16. Additional condensate formed in the secondary section 6 is collected in the secondary bottom cover 24 and also travels through the outlet nozzle 26, and then through the condensate line 42 to the upper steam distribution manifold 28 to combine with the water collected from the primary condenser section 4.

[0073] According to another feature of the invention, the heat exchanger panel 2 is suspended from the frame 36 of the condenser section module 37 by a plurality of flexible hangers 50, which allow the heat exchanger panel 2 to expand and contract based on heat load and climate. Figure 17 This illustrates how the hanger 50 is connected to the frame 36 of the condenser section module 37, and Figure 18A , Figure 18B , Figure 19A and Figure 19BDetails of two embodiments of the hanger are shown. According to each embodiment, the hanger 50 is configured to allow the heat exchanger panel 2 to expand or contract while providing support for its weight. Four hangers 50 are used for each heat exchanger panel 2. According to one embodiment, the hanger 50 consists of a rod 54, each end of which has a sleeve 56. The sleeve 56 is fitted onto the rod 54 and prevents a retaining disc or knob 58 at each end of the rod 54 from disengaging from the corresponding end. The retaining disc or knob 58 is fitted into a correspondingly shaped recess 60 on the inner surface of the corresponding sleeve, which does not extend to the end of the sleeve. One end of the hanger 50 is connected to the frame 36 of the condenser section module 37, and the other end of the hanger is attached to a lift / support corner 15 or another attachment point on the top tube sheet 10 or bottom tube sheet 14. The sleeve 56 is preferably adjustable to allow the length of the steam hanger to be set during construction. Once set, the movement of the heat exchanger panel 2 is achieved by ball joints at the top and bottom of the hanger 50 and by angular displacement of the hanger 50.

[0074] According to a preferred embodiment of the invention, the ACC of the invention is constructed in a modular manner. According to various embodiments, the lower structure 62, the condenser section module 37, and the gas chamber section 64 can be assembled on the ground individually and simultaneously. According to one embodiment, the condenser section frame can be raised on a rod-shaped lower structure, which is just high enough that the upper steam distribution manifold 28 hangs over the bottom side of the condenser section frame. The heat exchanger panel 2 is then lowered and attached to the frame 36 of the condenser section module 37 and to the upper steam distribution manifold 28 (preferably at or just above the ground), see [reference]. Figure 20A and Figure 20B Once complete, the assembled condenser section module 37, with the attached steam distribution manifold 28, can be lifted and placed in the corresponding complete lower structure 62. Figure 22 and Figure 23 On the top of ) and completely corresponding to the air chamber section 64 ( Figure 21A and Figure 21B )Then it is lifted to be placed in the condenser section module 37 ( Figure 24 On top of ). Although the assembly described herein is performed hierarchically, the assembly of various modules may be performed at their final locations, provided that the planning and construction scheme allows.

[0075] The description of fin types and sizes herein is not intended to limit the invention. The tubes of the invention described herein can be used with any type of fin without departing from the scope of the invention.

Claims

1. An air-cooled industrial steam condenser, comprising: Multiple heat exchanger tube bundles are supported in a condenser section support, and each heat exchanger tube bundle has a longitudinal axis and a transverse axis perpendicular to its longitudinal axis. Each heat exchanger tube bundle includes a secondary condenser, a primary condenser, a top cover, a primary bottom cover, and a secondary chamber inside the primary bottom cover. The top cover is connected to and in fluid communication with the top end of each tube in the secondary condenser and the primary condenser. The primary bottom cover is connected to and in fluid communication with the bottom end of each tube in the primary condenser. The secondary chamber is connected to and in fluid communication with the bottom end of each tube in the secondary condenser. The primary bottom cover has a single steam inlet centrally located on the bottom surface of the primary bottom cover. The air-cooled industrial steam condenser also includes a steam distribution manifold located below the bottom side of the heat exchanger tube bundle and arranged along an axis perpendicular to the longitudinal axis of the heat exchanger tube bundle. The steam distribution manifold has a plurality of connections on its top surface, which are adapted to connect to the primary bottom cover inlet.

2. The air-cooled industrial steam condenser according to claim 1, wherein each of the heat exchanger tube bundles is suspended from the condenser section support by a plurality of flexible suspension supports.

3. The air-cooled industrial steam condenser according to claim 2, wherein each of the flexible suspension supports includes a central rod, the central rod being connected to a connecting sleeve at each end, and wherein one connecting sleeve of each flexible suspension support is connected to the condenser section support and a second connecting sleeve of each flexible suspension support is connected to the tube sheet of the heat exchanger tube bundle.

4. The air-cooled industrial steam condenser according to claim 1, wherein the tube in the primary condenser has a length of 2.0m to 2.8m, a cross-sectional height of 120mm, and a cross-sectional width of 4mm to 10mm.

5. The air-cooled industrial steam condenser according to claim 4, wherein the tube has a cross-sectional width of 5.2 mm to 7 mm.

6. The air-cooled industrial steam condenser according to claim 5, wherein the tube has a cross-sectional width of 6.0 mm.

7. The air-cooled industrial steam condenser of claim 1, wherein the tube in the primary condenser has fins attached to a flat side of the tube, the fins having a height of 9 mm to 10 mm and arranged at 5 to 12 fins per inch.

8. The air-cooled industrial steam condenser of claim 1, wherein the tube in the primary condenser has fins attached to a flat side of the tube, the fins having a height of 18 mm to 20 mm, spanning the space between adjacent tubes and contacting adjacent tubes, the fins being arranged at 5 to 12 fins per inch.

9. The air-cooled industrial steam condenser of claim 1, wherein the secondary condenser is centrally located along the heat exchanger tube bundle and is side-connected to the side portion of the primary condenser at each end.

10. A method for assembling an air-cooled industrial steam condenser according to claim 1, comprising: The condenser section is assembled on the ground, the condenser section including the condenser section support and the heat exchanger tube bundle; The condenser section is supported at a certain height above the ground, which is only sufficient to suspend the steam distribution manifold below and adjacent to the heat exchanger tube bundle; Assemble the air chamber section, which includes a fan platform and fan assembly, onto the ground; Elevate the condenser section and steam distribution manifold, and place them on top of the corresponding lower-level mechanism; Raise the assembled gas chamber section and place it on top of the condenser section.

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