EP4384766A1 - Installation de condensation - Google Patents

Installation de condensation

Info

Publication number
EP4384766A1
EP4384766A1 EP23726456.9A EP23726456A EP4384766A1 EP 4384766 A1 EP4384766 A1 EP 4384766A1 EP 23726456 A EP23726456 A EP 23726456A EP 4384766 A1 EP4384766 A1 EP 4384766A1
Authority
EP
European Patent Office
Prior art keywords
air chamber
tube bundles
condensation system
lines
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23726456.9A
Other languages
German (de)
English (en)
Inventor
Johannes Gürtner
Xavier Guerif
Nicolas Bariteau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kelvion Thermal Solutions Holding GmbH
Original Assignee
Kelvion Thermal Solutions Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kelvion Thermal Solutions Holding GmbH filed Critical Kelvion Thermal Solutions Holding GmbH
Publication of EP4384766A1 publication Critical patent/EP4384766A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium

Definitions

  • the invention relates to a condensation system according to the features of patent claim 1.
  • Air-cooled heat exchangers are used to cool fluids using ambient air in various processes in the chemical, petrochemical and power generation industries.
  • the heat exchangers essentially consist of heat exchanger tubes, which are provided with ribs on the outside to improve heat transfer.
  • the transfer of heat to the cooling medium air using heat exchangers through conduction and convection is often referred to as dry cooling.
  • the heat exchanger tubes of air-cooled heat exchangers are welded on Tube sheets are combined into so-called tube bundles.
  • a tube bundle can have one or more parallel rows of heat exchanger tubes.
  • the V-shaped arrangement of the bundles enables a slightly lower construction and also allows several bundles to be arranged in rows.
  • the disadvantage of the A-shape is that the fans have to be mounted relatively high. The effort involved in supporting the fans at greater heights also requires a correspondingly complex substructure. The required floor space is the same as with the A-shape.
  • the invention is based on the object of demonstrating a condensation system which enables high condensation performance and at the same time can be constructed cost-effectively.
  • the air chamber has a trapezoidal cross-section with a wider top and a narrower bottom and with two long sides that are inclined relative to the vertical, the long sides being formed by the tube bundles.
  • the front sides are impermeable to cooling air.
  • the cooling air is sucked in through the tube bundles, so that cooling air flows around the outside of the tubes of the tube bundles.
  • the top of the air chamber has an outlet opening.
  • the upwardly directed tube bundles are preferably at an angle of 15° to the vertical or at an angle of 75° to a horizontal plane.
  • the fans are arranged horizontally, so that the angle information can also be based on a horizontal top of the air chamber.
  • a further advantage of the invention is that the air chamber can be formed in a modular design by several air chamber modules.
  • Each air chamber module is equipped with a fan.
  • the individual air chamber modules are connected to each other at their front sides.
  • the horizontal steam distribution lines and the horizontal condensate collection lines of the air chamber modules are also connected to one another, so that a series of individual air chamber modules standing linearly one behind the other forms an extended and extendable air chamber.
  • Adjacent end faces of the individual air chamber modules are usually closed and separated by a trapezoidal partition. If all fans are always operated at the same speed, the partition walls can be omitted. However, if a fan is defective, the outlet opening of the defective fan would have to be sealed airtight so that no air is sucked into the corresponding air chamber module by the other fans through the outlet opening or into the air chamber bypassing the tube bundles.
  • Each of the fans is located in a fan ring that forms and limits the exit openings in the top.
  • the fan ring is preferably arranged between the steam distribution lines so that the overall height of the condensation system remains low on the one hand and, on the other hand, a maximum outlet opening for the cooling air is created. The lower the height, the smaller construction machines, especially cranes, are required to build such condensation systems.
  • the condensation system can be arranged on a frame structure. This is particularly advantageous if the condensation system is installed at ground level, i.e. not on a building.
  • the installation on the framework then enables the geodetic emptying of the condensate collectors into a condensate collection tank, which can be arranged under the framework.
  • a required inlet height is achieved to at least one condensate pump, which is arranged under the condensate collection tank.
  • the support structure may be completely dispensed with.
  • the condensation system is arranged on a frame, the space delimited by the frame and/or the frame itself are preferably located completely below the underside of the air chamber.
  • the term “below” is to be understood as meaning that the surface of the underside is projected onto the floor on which the condensation system is mounted.
  • the base area defined in this way has a width that is therefore smaller than the distance between the steam distribution lines.
  • the width of the base area of the condensation system can essentially correspond to the width in the height range of the condensate collection lines.
  • the condensate collection lines connect laterally to the underside of the air chamber and protrude slightly beyond the underside of the air chamber on both sides.
  • tube bundles with a length range of 7,000 mm to 11,000 mm are preferably used, the length being measured from an upper tube end to a lower tube end.
  • the condensation system according to the invention significantly achieves the goal of being able to set up condensation systems on smaller installation areas, or of creating systems with smaller footprints.
  • the reduction of the installation space can be up to 50%.
  • the amount of steel construction required to set up a condensation system is reduced by around 30% by weight compared to A- or V-shaped tube bundle arrangements.
  • the inclination of the tube bundles by approx. 15° limits the risk of flooding in the dephlegmatically operated tube bundles.
  • the condensation system according to the invention therefore solves the problem according to the invention of reducing costs and improving the condensation performance in a particularly advantageous manner.
  • Figure 1 shows a condensation system connected to a turbine
  • Figure 2 shows a condensation system in a side view
  • Figure 3 shows a condensation system in a top view
  • Figure 4 further embodiments of condensation systems in one
  • Figure 5 is a perspective view of a condensation system.
  • Figure 1 shows a condensation system 1 for condensing steam 2, which is supplied to the condensation system 1 as exhaust steam from a power plant arrangement.
  • the steam 2 is condensed in the condensation system 1.
  • the condensate 3 is collected in a condensate collection tank 33 and from there fed to an evaporator 4 in a closed circuit by means of condensate pumps 34.
  • the superheated steam 5 from the evaporator flows into a turbine 6, which drives a generator 7.
  • the steam 2 from the turbine is in turn fed to the condensation system 1.
  • This circuit is merely an example of a possible application for using such a condensation system 1.
  • the condensation system 1 of Figure 1 is shown in a very simplified vertical cross section.
  • the steam 2 flows into steam distribution lines 8, 9 arranged at the top, which are connected to upper tube sheets of rectangular tube bundles 10, 11.
  • the steam 2 flows through the tubes of the tube bundles 10, 11 from top to bottom in the direction of lower condensate collection lines 12, 13, which are connected to lower tube sheets of the tube bundles 10, 11, the condensate 3 being collected in the condensate collection lines 12, 13 and again is supplied to the power plant arrangement.
  • the tube bundles 10, 11 are inclined by 15° relative to a vertical V.
  • the vertical is the central longitudinal plane of the trapezoidal condensation system 1.
  • the tube bundles 10, 11 delimit an air chamber 14 between them, which tapers downwards on both sides and in relation to the central longitudinal plane.
  • the condensate collection lines 12, 13 are spaced apart in the horizontal direction. They run horizontally, just like the steam distribution lines 8, 9.
  • the air chamber 14 is closed by an underside 15 between the condensate collection lines 12, 13. Cooling air 16 can only enter the air chamber 14 in the direction of the arrows shown and is conveyed out of the air chamber 14 on an upper side 17 by a fan 18 (FIG. 3), which is arranged in a fan ring 19. Heated cooling air flows upwards in the direction of the upward pointing arrow.
  • An essential element of the condensation system according to the invention is the trapezoidal, downwardly tapering air chamber 14 with its side walls 27, which are arranged mirror-symmetrically to the central longitudinal plane in the middle of the condensation system.
  • the trapezoidal shape is limited at the bottom by the bottom 15 and at the top by the top 17, which runs parallel to the bottom 15.
  • Figure 2 shows such a condensation system 1 in a side view and partly in section.
  • a motor 20 and a gear 21 can be seen in the area of the underside 15.
  • a shaft 22 leads vertically upwards from the gear 21 and drives the fan 18. The maintenance of the fan 18 is therefore easier than with a drive that is arranged above the heat exchanger bundle.
  • the term “fan” primarily refers to an axial fan, denoted by a hub and attached fan blades that promote airflow.
  • the fan drive consisting of motor 20 and gear 21 is located within the air chamber 14.
  • the upwardly directed tube bundles 10, 11 stand with their lower ends on the condensate manifolds 12, 13.
  • the condensate manifolds 12, 13 have feet 35 which stand on main longitudinal beams 36 of a frame structure 23. Between a lower edge 37 of the condensate collection lines 12, 13 and the main longitudinal members 36, the gap is sealed airtight by locking plates 38.
  • the two main longitudinal beams 36 are connected to one another via cross beams. The entire level between the main longitudinal beams 36 is sealed airtight via a base plate.
  • the transmission 21 and the motor 20 are arranged above this level. So that the transmission 21 and the engine 20 are supplied with cold air for cooling, it is planned to arrange a hood over the engine 20 and the transmission 21 and to remove the floor plate below the engine 20 and the transmission 21. Cold ambient air can cool the engine 20 and the transmission and then be sucked into the air chamber 14 via openings in the hood.
  • Figures 1 and 2 show a frame structure 23 which is located below the underside 15 of the condensation system 1.
  • Three supports 24, 25, 26 can be seen in the side view of Figure 2.
  • the middle support 25 is arranged in the length range of the vertical V. The load path from the fan to the middle support is particularly short. Further supports 24, 26 are arranged at the ends. There are three supports on each long side 27, which can be stabilized by additional struts (Figure 5).
  • Figure 3 shows a distance A1 as a horizontal distance between the upper ends of the tube bundles 10, 11 and a second distance A2 between the lower ends of the tube bundles 10, 11 at the level of the associated condensate collection lines 12, 13.
  • the distances A1, A2 are between the respective upper and lower ones Tube sheets of the tube bundles 10, 11 are measured.
  • the distances A1, A2 are identical between all tube bundles 10, 11.
  • the second distance A2 is at least a third of the first distance A1, so that the lower ends of the tube bundles 10, 11 and the condensate collection lines 12, 13 are always arranged at a relatively large distance from one another, due to the slight inclination of the tube bundles in an angular range of 15 °+/-1°. If the angle were approximately twice as large, the condensate collection lines would be directly next to each other as in a V arrangement, but supports would then have to be provided up to the steamer sub-lines so that the condensation system is adequately supported along the length. That is not necessary here. Self-supporting tube bundles are used.
  • Figure 2 shows a condensation system 1 with all the features necessary for operation.
  • the design of Figure 2 can serve as a single module, which is extended by further identical air chamber modules.
  • Figure 4 shows several such air chamber modules, which are connected in series in a linear design and form a common condensation system 1.
  • the steam distribution lines 9 and condensate collection lines 13 of the air chamber modules 28 have been connected to one another. Designs with two, three, four or even more individual air chamber modules 28 are possible.
  • Several rows directly next to each other, as with A or V Lukos, are not planned because the intake space for the cooling air between the steeper tube bundles 10,11 is significantly smaller.
  • the condensation system according to the invention is therefore particularly suitable for applications in which a lower condensation output is sufficient.
  • FIG. 5 shows another condensation system 1.
  • the stand structure 23 has additional diagonal struts 29, which are attached to the supports 24, 25, 26 in the lower area and run obliquely upwards to the underside of the air chamber.
  • the air chamber inside can be entered via a maintenance access 31 the size of a room door into an otherwise closed end face 30.
  • the second air chamber module 28 in perspective of a total of four identical air chamber modules 28 has one or more dephlegmatically connected tube bundles 11.
  • each of the 2 to 4 or more air chamber modules in a row has an identical number of dephlegmatically connected raw bundles at the identical location.
  • Each air chamber module preferably has a proportion of approximately 16% to approximately 20% dephlegmatory tubes or tube bundles. This has the advantage that the diameter of the condensate collecting pipes through which the steam flows into these pipes or this pipe bundle can be kept small.
  • the condensation system 1 has a length L2 measured in the longitudinal direction of the steam distribution lines 9, 10, which run horizontally in the area of the upper tube sheets, which is a multiple of the length L1 of an individual air chamber module ( Figure 2).
  • the base area G which is occupied by the stand frame 23, has a width B1.
  • the width B1 of the base area G corresponds to the width B2 of the condensation system 1 in the height range of the condensate collecting lines 12, 13 arranged below and running horizontally in the area of the lower tube sheets.
  • the distance A1 in the height range of the steam distribution lines 8, 9 is approximately twice as large.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne une installation de condensation (1) avec des faisceaux de tubes (10, 11) orientés vers le haut pour la condensation de la vapeur, présentant les caractéristiques suivantes : a) une chambre à air comporte une section transversale trapézoïdale s'élargissant vers le haut, avec un côté supérieur, un côté inférieur et deux côtés longitudinaux inclinés dans des directions opposées par rapport à un V vertical et formés par les deux faisceaux (10, 11), et des côtés d'extrémité (30) qui sont imperméables à l'air de refroidissement ; b) la face supérieure possède au moins une ouverture de sortie pour l'air de refroidissement chauffé, un ventilateur (18) étant situé dans l'ouverture de sortie, ce ventilateur étant configuré pour aspirer de l'air de refroidissement plus froid, provenant de l'extérieur, à travers les faisceaux de tubes (10, 11) dans la chambre d'air (14) ; c) les faisceaux de tubes (10, 11) comportent des tubes d'échangeur de chaleur qui sont raccordés à leurs extrémités à des conduites de distribution de vapeur (8, 9) et à des conduites de collecte de condensat (12, 13), l'une des conduites de distribution de vapeur (8, 9) et l'une des conduites de collecte de condensat (12, 13) étant disposées sur chacun des deux côtés longitudinaux ; d) les faisceaux de tubes (10, 11) forment chacun un angle W1 compris entre 12° et 18° par rapport à la verticale V, les faisceaux de tubes (10, 11) étant espacés les uns des autres d'une première distance par rapport aux conduites de distribution de vapeur (8, 9) et d'une seconde distance A2 par rapport aux conduites de collecte de condensat (12, 13), la seconde distance étant au moins égale à 1/3 de la première distance A1.
EP23726456.9A 2022-05-09 2023-05-08 Installation de condensation Pending EP4384766A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022111503.8A DE102022111503A1 (de) 2022-05-09 2022-05-09 Kondensationsanlage
PCT/DE2023/100331 WO2023217319A1 (fr) 2022-05-09 2023-05-08 Installation de condensation

Publications (1)

Publication Number Publication Date
EP4384766A1 true EP4384766A1 (fr) 2024-06-19

Family

ID=86604606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23726456.9A Pending EP4384766A1 (fr) 2022-05-09 2023-05-08 Installation de condensation

Country Status (6)

Country Link
EP (1) EP4384766A1 (fr)
KR (1) KR20240093909A (fr)
CN (1) CN118140106A (fr)
AU (1) AU2023266966A1 (fr)
DE (1) DE102022111503A1 (fr)
WO (1) WO2023217319A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20061708A1 (it) * 2006-09-07 2008-03-08 Luve Spa Struttura portante,particolarmente per condensatori e raffreddatori di liquido di grande potenza
BR102014023072B1 (pt) 2014-09-13 2020-12-01 Citrotec Indústria E Comércio Ltda sistema de condensação à vácuo utilizando condensador evaporativo e sistema de remoção de ar acoplado as turbinas de condensação em termoelétricas
US11604030B2 (en) * 2017-09-27 2023-03-14 Holtec International Air-cooled condenser system
BE1024229B1 (fr) 2017-10-31 2019-05-27 Hamon Thermal Europe S.A. Unité de refroidissement, installation et procédé
KR20220146652A (ko) * 2020-03-06 2022-11-01 홀텍 인터내셔날 유도 통풍 공랭식 응축기 시스템

Also Published As

Publication number Publication date
WO2023217319A1 (fr) 2023-11-16
DE102022111503A1 (de) 2023-11-09
KR20240093909A (ko) 2024-06-24
CN118140106A (zh) 2024-06-04
AU2023266966A1 (en) 2024-04-11

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