EP1215368B1 - Agencement de turbines à vapeur - Google Patents

Agencement de turbines à vapeur Download PDF

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Publication number
EP1215368B1
EP1215368B1 EP20000127358 EP00127358A EP1215368B1 EP 1215368 B1 EP1215368 B1 EP 1215368B1 EP 20000127358 EP20000127358 EP 20000127358 EP 00127358 A EP00127358 A EP 00127358A EP 1215368 B1 EP1215368 B1 EP 1215368B1
Authority
EP
European Patent Office
Prior art keywords
steam
reheater
pressure turbine
foundation plate
steam turbine
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.)
Expired - Lifetime
Application number
EP20000127358
Other languages
German (de)
English (en)
Other versions
EP1215368A1 (fr
Inventor
Walter Klamet
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE50010305T priority Critical patent/DE50010305D1/de
Priority to EP20000127358 priority patent/EP1215368B1/fr
Publication of EP1215368A1 publication Critical patent/EP1215368A1/fr
Application granted granted Critical
Publication of EP1215368B1 publication Critical patent/EP1215368B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
    • F22B37/246—Supporting, suspending, or setting arrangements, e.g. heat shielding for steam generators of the reservoir type, e.g. nuclear steam generators
    • F22B37/248—Supporting, suspending, or setting arrangements, e.g. heat shielding for steam generators of the reservoir type, e.g. nuclear steam generators with a vertical cylindrical wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants

Definitions

  • the invention relates to a steam turbine arrangement with a with hot steam deliverable high pressure turbine part and with one in communication with the high pressure turbine section standing low-pressure turbine section, wherein in the flow direction the steam is the low pressure turbine part of the high pressure turbine part downstream, and with a reheater for reheating the from the high-pressure turbine section outgoing steam.
  • From DE 199 21 023 A1 is a nuclear power plant with a Steam turbine arrangement and a method for operating a Nuclear power plant with steam turbine arrangement known.
  • the nuclear power plant has a nuclear reactor via a primary circuit connected to a steam generator.
  • Steam generator will use live steam to operate one with the Steam generator connected steam turbine assembly generated.
  • the Steam turbine arrangement has a high-pressure turbine part, the connected via a main steam line to the steam generator is.
  • the main steam line opens into a steam inlet into the high-pressure turbine section.
  • a quick-closing valve In the main steam line is arranged a quick-closing valve.
  • a control valve arranged in the main steam line.
  • a Dampfanzapfung provided, which is a Tapping check valve has.
  • a steam path is formed, which is from the steam inlet through the high pressure turbine via a water separator, a latter downstream reheater to a further sub-turbine, for example a medium-pressure and / or low pressure turbine section leads.
  • the High-pressure turbine section and in the flow direction of the steam the low-pressure turbine section of the high-pressure turbine section or medium-pressure turbine on a common Foundation plate, e.g. arranged a foundation table.
  • the Foundation plate is about a damping device, for example as a spring system or a hydraulic damping system is designed, vibrationally relative to the ground largely decoupled.
  • the high-pressure turbine section points a discharge line for in the high-pressure turbine section partially expanded steam, which to the reheater connected and over which the partially expanded steam to Overheating the reheater is delivered.
  • the reheated steam leaves the reheater via an overflow pipe connected to the steam inlet of a the high-pressure turbine section downstream low-pressure turbine section fluidically connected.
  • the object of the invention is, in particular with regard to the vibration damping properties and the required system volume to provide improved steam turbine arrangement.
  • this object is achieved by a steam turbine arrangement with a hot steam deliverable High pressure turbine part and one with the high pressure turbine part fluidly connected low pressure turbine part, wherein in the flow direction of the steam, the low-pressure turbine section downstream of the high-pressure turbine section is, and with a reheater device for reheat of the effluent from the high-pressure turbine section Steam, with the partial turbines and the reheater on a supporting common foundation plate are arranged.
  • the invention is already based on the recognition that the previously known steam turbine arrangements, in particular at the realization of saturated steam turbo sets, which is a high-pressure turbine part and a medium pressure and / or low pressure turbine part with regard to installation and storage the system parts are in need of improvement.
  • saturated steam turbo sets which is a high-pressure turbine part and a medium pressure and / or low pressure turbine part with regard to installation and storage the system parts are in need of improvement.
  • the along the steam path between the high-pressure turbine section and the low pressure turbine section via corresponding steam lines switched overheating device is in Not optimal with regard to occurring vibrations the other plant components, in particular the sub-turbines, established.
  • the other plant components in particular the sub-turbines, established.
  • the reheater facilities are doing e.g.
  • any Tilting movements of the reheater are usually in a direction parallel to the machine axis defined and are attached by those at the sub-turbines Overflow lines imprinted. Tilting movements in one Direction substantially perpendicular thereto are undesirable and are commonly used by building-firm guides Preheating device largely prevented.
  • building-safe tours are part of one the steam turbine assembly receiving operating building a power plant.
  • the foundation plate connected via a damping device to the ground.
  • damping devices come in particular Spring systems or hydraulic damping systems in question. Due to the vibration damping of the foundation plate are also the plant components arranged on the foundation plate, d. H. Partial turbines and the reheater, as a system muted together.
  • an advantageous decoupling of the foundation plate takes place from the ground, so that in particular bumps over the Soil, e.g. as a result of earthquakes, steamed very efficiently and couple only slightly to the steam turbine arrangement can. This allows a particularly high level of operational safety.
  • the foundation plate carries the reheater about a camp.
  • the warehouse is here attached directly or indirectly to the foundation plate.
  • the reheater is carried by the bearing, which is attached to the foundation plate.
  • the reheater is advantageous heat expansion tolerant stored in the camp.
  • the warehouse takes over at the same time the task of a certain fixation and / or Guiding the reheater, causing the Steam turbine arrangement as a whole system very compact and reliable on the supporting this common base plate is arranged.
  • the bearing is of this a supporting structure formed on the foundation plate is attached.
  • the support structure can for example a steel structure with a plurality of steel struts exhibit.
  • the supporting structure has a storage area on.
  • the support structure has a mounting area on, over which the supporting structure by means of suitable Fasteners attached to the foundation plate is.
  • the attachment can be solved, for example be designed with a screw, or insoluble.
  • An inseparable connection of the supporting structure with the foundation plate can be about by pouring the supporting structure with an anchor in the e.g. Concrete foundation plate be realized.
  • the foundation plate preferably has a recess at the end in which the reheater is inserted is.
  • the recess can be circular or as a polygon through a corresponding section of an existing one Foundation plate e.g. made of cast concrete.
  • An existing concrete foundation slab simply becomes one corresponding recess or a section through material removal reached.
  • the reheater at least in one level in the Foundation plate extends substantially sufficient guided and secured.
  • the bearing for the reheater having supporting structure is on the foundation plate fixed so that the support structure the Recess at least partially in a circumferential direction of the Surrounds recess.
  • the recess is preferably at the end of the foundation plate adjacent the high-pressure turbine section intended.
  • an overflow line is provided, via which overheated Steam from the reheater reaches the low-pressure turbine section.
  • the overflow line connects the steam outlet of the reheater with the low-pressure turbine part and is thus part the steam turbine assembly.
  • Advantageously realized by the shortened length a compact design, so that the length of the overflow compared to conventional Embodiments corresponding, e.g. 1 to 5 m, shortened is.
  • the cable expense for the overflow is therefore reduced compared to conventional designs, what immediately with a cost advantage in the realization the steam turbine assembly is connected.
  • one of the sub-turbines drivable generator provided on the foundation plate is arranged.
  • an exciter machine to provide a rotor current for the generator as well arranged on the foundation plate, whereby with the steam turbine arrangement at the same time a particularly compact and opposite Vibration sufficiently damped steam turbo set can be provided.
  • the designed as a steam turbo steam turbine arrangement is here in particular as saturated steam turbine set of a power plant,
  • a nuclear power plant can be used.
  • the reheater has a water separator on. Of the Water separator is part of the reheater here and as an integrated compact water separator reheat system designed. Of the High-pressure turbine section exhaust steam is via a suitable Outflow line of the water separation reheater fed. When flowing through the steam Water is separated from the steam in the water separator. The separated water collects preferably in a vertically lower portion of the water separator having Reheat facility. After separating the water from the water separator is corresponding to the steam dry and is in the reheater reheated. The thus treated, from the reheater outgoing steam is by means of a U-berströmtechnisch one along the steam path of the reheater downstream low-pressure steam turbine delivered. The low-pressure steam turbine is therefore the high-pressure steam turbine along the steam path via the reheater downstream.
  • the high pressure turbine part can in an alternative Design also a medium-pressure turbine part or a Combination of a low-pressure turbine section and a medium-pressure turbine section be provided.
  • the steam turbine assembly is a steam turbo set a power plant, in particular a nuclear power plant, designed.
  • a steam turbo set is also referred to as saturated steam turbo set.
  • a steam turbine set 27 is fragmentary in a perspective view in a conventional embodiment (Prior art) shown.
  • the steam turbo set 27 has a steam turbine assembly 1, which is a high pressure turbine part 3 and a low-pressure turbine part 5 and a Reheater has 7.
  • the low pressure turbine part 5 includes a first low-pressure turbine part 5A, a second low pressure turbine part 5B and a third low pressure turbine part 5C, wherein the low-pressure turbine sections 5A, 5B, 5C are sequential along a longitudinal axis 29 are arranged.
  • the sub-turbines 3, 5 are on a common Foundation plate 11 is arranged.
  • the foundation plate 11 extends along the longitudinal axis 29 as well along a substantially perpendicular to the longitudinal axis 29th extending transverse axis 31.
  • the extension of the foundation plate 11 along the longitudinal axis 29 is greater than that along the transverse axis 31, so that the longitudinal axis dimension the foundation plate 11 in about the axial dimension of the steam turbo set 27 corresponds.
  • the foundation plate 11 can be e.g. a length of about 70 m, a width of about 30 m and a thickness of about 6 m.
  • the foundation plate 11 is solid, made of concrete, for example, cast in particular, and carries a weight of about 7000 t the arranged on the base plate 11 system parts.
  • the reheater 7 includes a first reheater 9A as well one along the transverse axis 31 of the first reheater 9A opposite the second reheater 9B.
  • the reheater 7 is via an outflow line 37 connected to the high-pressure turbine section 3.
  • the first reheater 9A via an outflow line 37A and the second reheater 9B via another Outflow line 37 B connected to the high-pressure turbine section 3.
  • the discharge lines 37A, 37B is from the high pressure turbine part 3 outflowing steam D the respective reheater 9A, 9B deliverable.
  • the first reheater 9A is via an overflow 19A with the inflow region the low-pressure steam turbine 5 connected.
  • the second reheater 9B is analogous via the overflow line 19B Way as the first reheater 9A with the low-pressure turbine section 5 fluidly connected.
  • a respective delivery of from the reheaters 9A, 9B flowing between superheated steam D to a respective Low pressure turbine section 5A, 5B, 5C branches from the overflow lines 19A, 19B a respective branch line 33 to the Low-pressure turbine sections 5A, 5B, 5C from.
  • the branch line 33 branches in this case substantially perpendicularly from the overflow line 19A, 19B, wherein the overflow 19A, 19B itself substantially parallel to the longitudinal axis 29 of the steam turbo set 27 extends.
  • the foundation plate 11 is for Vibration damping over a not shown in the figure 1 Damping device connected to the ground.
  • the high pressure turbine part 3 by means of a main steam line 35 with live steam D charged.
  • the live steam D has a temperature from about 300 ° C to.
  • the live steam D flows through the high-pressure turbine section 3, drives them and relaxes perform work.
  • the expanded steam flows over the discharge line 19A, 19B to the respective reheater 9A, 9B.
  • the reheater 9A, 9B the steam D reheated, wherein in a water separator 25th at the same time water from the vapor D is deposited.
  • the overheated Steam D flows over the overflow line 19A, 19B from the reheater 9A, 9B and is via the branch line 33 the low-pressure turbine sections 5A, 5B, 5C delivered.
  • the overflow line 19A, 19B leads between overheated Steam D of typically about 260 ° C.
  • the overflow line 19A, 19B also becomes hot reheat line while the discharge line 37A, 37B cold reheat line is called, because this partially relaxed and cooled steam D of only approx. 180 ° C leads.
  • the low-pressure turbine sections 5A, 5B, 5C delivered Steam D from the hot reheat line 19A, 19B performs in the low-pressure sub-turbines 5A, 5B, 5C work and drives their unspecified rotors at.
  • the low-pressure turbine sections 5A, 5B, 5C are related connected in parallel to the overflow lines 19A, 19B, so that a corresponding distribution of the steam on the Low pressure turbine sections 5A, 5B, 5C takes place.
  • the mechanical Rotational energy of the high pressure turbine part 3 and the low pressure turbine part 5 is used to move along the longitudinal axis 29 the sub-turbines 3, 5 axially downstream generator 21 to drive and generate electrical energy in this way.
  • the sub-turbines 3, 5, the generator 21 and the exciter machine 23 are arranged on a rotatable shaft 55.
  • FIG. 2 shows an exemplary embodiment of the invention a plan view of an end-side cutout on the Foundation plate 11.
  • Steam turbine assembly 1 is the reheater 7 together with the not closer in Figure 2 shown sub-turbines 3, 5 (see Figure 1) on arranged this supporting common foundation plate 11.
  • a recess 17 is provided, which for example by removing material from the foundation plate 11 forming material, e.g. Concrete, is realized.
  • the foundation plate 11 carries the reheater 7 via a bearing 13A, 13B.
  • the bearing 13A, 13B is of a Support structure 15 formed, which on the foundation plate 11 is attached.
  • the support structure 15 has a number welded together or otherwise with each other fixed steel struts 57A, 57B.
  • the reheater 7 is substantially cylindrical and has a corresponding circular in plan view Cross-section on.
  • the Overflow 19 branches at an angle ⁇ opposite the longitudinal axis 29 of the reheater 7th from.
  • the overflow line 19 leads during operation of the steam turbine arrangement 1 hot steam D of about 260 ° C and will too referred to as so-called hot reheat line 19.
  • the angle ⁇ is for example about 45 °, provided the foundation plate 11 a sufficiently large extent along the transverse axis 31 has.
  • the supporting structure 15 of Figure 2 has a first leg 47, which is the recess 17 end of the foundation plate 11 closes, so that the reheater 7 in the recess 17th the foundation plate 11 is inserted.
  • the first leg 47 extends along the transverse axis 31 and closes the reheater 7 along the longitudinal axis 29 end of the foundation plate 11 a.
  • the recess 17 is as a hexagonal section of the foundation plate eleventh realized, so that the reheater 7th along the transverse axis 31 of the material of the foundation plate 11 enclosed to form an annular gap 59 is, while along the longitudinal axis 29, the reheater 7 end of the foundation plate 11 of the Supporting structure 15 and along the longitudinal axis of these opposite of material of the foundation plate 11 under each Gap formation is included.
  • the reheater 7 is at the same time as a water separator 25 (see FIG. 1) as in conventional steam turbo sets 27.
  • reheater 7 By integration of the reheater 7 in the foundation plate 11 is at least along the longitudinal axis 29, the dimension of the steam turbine assembly 1, resulting in significant cost savings leads.
  • this direct coupling of reheater 7 to the foundation plate 11 can Relative vibrations of the plant parts, e.g. in earthquakes be largely excluded. This leads to a reduction in load the reheater 7, the sub-turbines 3, 5 and the overflow 19 and others in the figure 2 not shown components.
  • FIGS and 4 An alternative arrangement of reheater 7 on the foundation table 11 is respectively in FIGS and 4.
  • the support structure 15 beside a first leg 47 is substantially perpendicular to the first leg 47 extending second leg 49th on.
  • the second leg 49 extends along the longitudinal axis 29 and is significantly shorter in length than the first Leg 47.
  • the second leg 49 is over the attachment area 41A attached to the foundation table 11.
  • FIG. 7 shows FIG. 4, in which the Supporting structure 15 a first leg 47 and a second leg 49, wherein the first leg 47 and the second leg 49 have approximately the same length.
  • the Reheater 7 is thereby along the Longitudinal axis 29 and along the transverse axis 31 each of material the foundation plate 11 and the support structure 15th included to form the gap 59.
  • the in Figure 4 shown configuration is particularly advantageous in a Foundation plate 11 applicable, in which the dimension along the transverse axis 31 with respect to those in Figures 2 and 3 shown arrangements is reduced.
  • the overflow line 17 no deflection 53, at least not in the area of the reheater 7 receiving Supporting structure 15 and the recess 17.
  • the proposed with the invention new problem solution for a steam turbine arrangement is in particular, a previously unused area of the foundation plate 11 with a To provide recess 7 and the reheater 7 along the longitudinal axis 29 to the steam turbo set 27 out to move axially into this recess 17.
  • Continue the reheater 7 by attached to the foundation Bearings 13A, 13B in a direction along the longitudinal axis 29 fixed. A relative mobility in the other Directions and a thermal expansion tolerance is guaranteed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Turbines (AREA)

Claims (9)

  1. Agencement (1) de turbines à vapeur comprenant une partie de turbine (3) haute pression pouvant être alimentée en vapeur (D) chaude et une partie de turbine (5) basse pression communiquant avec la partie de turbine (3) haute pression, la partie de turbine (5) basse pression étant, suivant la direction d'écoulement de la vapeur (D), en aval de la partie de turbine (3) haute pression et un dispositif (7) de surchauffe intermédiaire de la vapeur (D) sortant de la partie de turbine (3) haute pression,
       caractérisé en ce que les parties de turbine (3, 5) et le dispositif (7) de surchauffe intermédiaire sont disposés sur un plateau (11) commun de fondation qui les porte.
  2. Agencement de turbines à vapeur suivant la revendication 1, caractérisé en ce que, pour amortir les vibrations, le plateau (11) de fondation est relié au sol par un dispositif d'amortissement.
  3. Agencement de turbines à vapeur suivant la revendication 1 ou 2, caractérisé en ce que le plateau (11) de fondation porte le dispositif (7) de surchauffe intermédiaire par l'intermédiaire d'un palier (13).
  4. Agencement de turbines à vapeur suivant la revendication 1, 2 ou 3, caractérisé en ce que le palier (13) est formé d'une construction (15) porteuse qui est fixée au plateau (11 ) de fondation.
  5. Agencement de turbines à vapeur suivant l'une des revendications 1 à 4, caractérisé en ce que le plateau (11) de fondation a, du côté de l'extrémité, une fosse (7) dans laquelle est encastré le dispositif (7) de surchauffe intermédiaire.
  6. Agencement de turbines à vapeur suivant l'une des revendications 1 à 5, caractérisé en ce qu'il est prévu un conduit (19) de trop-plein par lequel de la vapeur (D) surchauffée passe du dispositif (7) de surchauffe intermédiaire à la partie de turbine (5) basse pression.
  7. Agencement de turbines à vapeur suivant l'une des revendications 1 à 6, caractérisé en ce qu'il est prévu une génératrice (21) qui peut être entraínée par les parties de turbine (3, 5) et qui est placée sur le plateau (11) de fondation.
  8. Agencement de turbines à vapeur suivant l'une des revendications 1 à 7, caractérisé en ce que, pour la séparation d'eau, le dispositif (7) de surchauffe intermédiaire comporte un séparateur (25) d'eau.
  9. Agencement de turbines à vapeur suivant l'une des revendications 1 à 8, caractérisé par une conformation en groupe alternateur (47) à vapeur d'une centrale électrique, notamment d'une centrale nucléaire.
EP20000127358 2000-12-13 2000-12-13 Agencement de turbines à vapeur Expired - Lifetime EP1215368B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50010305T DE50010305D1 (de) 2000-12-13 2000-12-13 Dampfturbinenanordnung
EP20000127358 EP1215368B1 (fr) 2000-12-13 2000-12-13 Agencement de turbines à vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20000127358 EP1215368B1 (fr) 2000-12-13 2000-12-13 Agencement de turbines à vapeur

Publications (2)

Publication Number Publication Date
EP1215368A1 EP1215368A1 (fr) 2002-06-19
EP1215368B1 true EP1215368B1 (fr) 2005-05-11

Family

ID=8170657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000127358 Expired - Lifetime EP1215368B1 (fr) 2000-12-13 2000-12-13 Agencement de turbines à vapeur

Country Status (2)

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EP (1) EP1215368B1 (fr)
DE (1) DE50010305D1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2312725A1 (de) * 1973-03-14 1974-09-26 Kraftwerk Union Ag Anordnung zur wasserabscheidung und zwischenueberhitzung von sattdampf
US4593526A (en) * 1984-08-27 1986-06-10 Westinghouse Electric Corp. Steam turbine system installation with protection of piping against seismic loading
JP2709140B2 (ja) * 1989-06-01 1998-02-04 株式会社日立製作所 発電プラントと蒸気タービン支持架台
DE19921023A1 (de) 1999-03-31 2000-07-13 Siemens Ag Kernkraftanlage mit einer Dampfturbinenanordnung sowie Verfahren zum Betrieb einer Kernkraftanlage mit Dampfturbinenanordnung

Also Published As

Publication number Publication date
EP1215368A1 (fr) 2002-06-19
DE50010305D1 (de) 2005-06-16

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