JP2017048747A - Steam turbine equipment and carrying-in method of feed water heater in steam turbine equipment - Google Patents

Steam turbine equipment and carrying-in method of feed water heater in steam turbine equipment Download PDF

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JP2017048747A
JP2017048747A JP2015173448A JP2015173448A JP2017048747A JP 2017048747 A JP2017048747 A JP 2017048747A JP 2015173448 A JP2015173448 A JP 2015173448A JP 2015173448 A JP2015173448 A JP 2015173448A JP 2017048747 A JP2017048747 A JP 2017048747A
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feed water
water heater
steam turbine
rail
carrying
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JP6450663B2 (en
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陽平 浦野
Yohei Urano
陽平 浦野
修二 岡本
Shuji Okamoto
修二 岡本
一剛 貝嶋
Kazutaka Kaishima
一剛 貝嶋
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Mitsubishi Power Ltd
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Mitsubishi Hitachi Power Systems Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method for shortening a construction time for piping work and carrying-in work of a feed water heater and the like by carrying-in the feed water heater, piping, a rail and a lifting device all as a unit to a construction site.SOLUTION: A carrying-in method of a feed water heater 1 in steam turbine equipment is provided that is used for carrying-in the feed water heater 1 in the steam turbine equipment in which the plurality of feed water heaters 1 for heating feed water to devices using an extracted steam from a steam turbine; piping connected to the plurality of feed water heaters 1 and arranged around the feed water heaters 1; a rail 4 on which the plurality of feed water heaters 1 are movably installed; a lifting device 5 which lifts the feed water heater 1 moving on the rail 4 and having reached a prescribed location and moves the lifted feed water heater 1; and a module frame structure 6 for supporting the lifting device 5 and the rail 4 are integrated in a modular form all as a unit. The carrying-in method of the feed water heater 1 in the steam turbine equipment is characterized in that when the feed water heaters 1 are carried in, the feed water heaters 1 are transported in an integrated and modular state, to a prescribed floor using a carrying-in apparatus and then carried in to a prescribed location via the lifting device 5 and the rail 4.SELECTED DRAWING: Figure 1

Description

本発明は蒸気タービン設備及び蒸気タービン設備における給水加熱器の搬入方法に係り、特に、現場での給水加熱器の搬出入期間を短縮するものに好適な蒸気タービン設備及び蒸気タービン設備における給水加熱器の搬入方法に関する。   The present invention relates to a steam turbine facility and a feed-in method for a feed water heater in the steam turbine facility, and more particularly to a steam turbine facility and a feed water heater in a steam turbine facility that are suitable for shortening the carry-in / out period of the feed water heater in the field. It is related with the carrying-in method.

一般に、発電所等を建設するためには、完成までに長い時間を要する。特に、発電所等において、蒸気タービンからの抽気を用いて、ボイラ又は原子炉等の機器への給水を加熱し、タービンプラントの熱効率の向上を図るための熱交換器の一つである給水加熱器は、付随する配管、サポート等を含めると工事期間が長く、発電所建設期間の長期化の要因の一つとなっている。そのため、給水加熱器に関する現場での搬出入期間を短縮することで、発電所全体の据付工事期間の短縮が望まれている。   In general, it takes a long time to complete a power plant or the like. In particular, in a power plant or the like, feed water heating is one of heat exchangers for heating the feed water to equipment such as a boiler or a nuclear reactor using steam extracted from a steam turbine to improve the thermal efficiency of the turbine plant. The equipment has a long construction period, including the accompanying piping, support, etc., and this is one of the factors that lengthen the construction period of the power plant. Therefore, it is desired to shorten the installation work period of the entire power plant by shortening the on-site carry-in / out period for the feed water heater.

このような据付工事期間の短縮を図るための復水器の据付工事方法が、特許文献１に記載されている。   Patent Document 1 describes a condenser installation method for shortening the installation period.

この特許文献１には、仮設揚重機の性能等の制限により、復水器の大型化に追従できない場合が生じ、更に、復水器の大型化にも係らず、据付工事の工事短縮が要求されることの対策として、工場等において、複数の部分に分けて組立てられた復水器の上部胴上半モジュール等を、タービン基礎に隣接するメンテナンススペースに設置された引き込みのための鋼材上で復水器として組立てた後に、復水器据付位置に搬入して据付けることが記載され、その際に、給水加熱器、支持構造物、器内抽気管を組立てた給水加熱器モジュールを、上部胴胴部内に搬入組立が行われることが記載されている。   In Patent Document 1, there are cases where it is not possible to follow the increase in size of the condenser due to limitations on the performance of the temporary lifting machine, and further, the construction work is required to be shortened despite the increase in size of the condenser. As a countermeasure, the upper upper half module of the condenser assembled in multiple parts at the factory, etc., is installed on the steel material for retraction installed in the maintenance space adjacent to the turbine foundation. After assembling as a condenser, it is described that the condenser is installed and installed at the condenser installation position. At that time, the feed water heater module in which the feed water heater, the support structure and the internal bleed pipe are assembled It is described that carry-in assembly is performed in the trunk part.

特開２００２−２４３３８６号公報JP 2002-243386 A

給水加熱器は、付随する配管、サポート等を含めると工事期間が長く、発電所建設及びメンテナンス期間の長期化の要因の一つとなっている。   The feed water heater has a long construction period including the accompanying piping, support, etc., which is one of the factors for extending the construction and maintenance period of the power plant.

しかしながら、特許文献１に記載されている技術では、給水加熱器と配管を一体にモジュール化することが記載されているが、給水加熱器の搬出等を考慮して、この作業に必要となるレール、吊装置等を含めてモジュール化することについては記載されておらず、搬出の工事期間を短縮することの根本的な解決策とは言えない。   However, in the technique described in Patent Document 1, it is described that the feed water heater and the pipe are integrated into a module, but the rails necessary for this work are taken into consideration when the feed water heater is taken out. However, it is not described about modularization including a suspension device or the like, and it cannot be said that it is a fundamental solution for shortening the work period for carrying out.

本発明は上述の点に鑑みなされたもので、その目的とするところは、給水加熱器、配管、レール及び吊装置等を建設現場で一体搬入することができ、配管工事、給水加熱器の搬入及び搬出作業などの工事期間を短縮することが可能な蒸気タービン設備及び蒸気タービン設備における給水加熱器の搬入方法を提供することにある。   The present invention has been made in view of the above-mentioned points, and the object of the present invention is to be able to carry in a water supply heater, piping, rails, suspension devices, and the like at the construction site. Another object of the present invention is to provide a steam turbine facility capable of shortening a construction period such as an unloading operation and a method for carrying in a feed water heater in the steam turbine facility.

本発明の蒸気タービン設備は、上記目的を達成するために、蒸気タービンからの抽気を用いて機器への給水を加熱する複数の給水加熱器と、該複数の給水加熱器に接続され、該給水加熱器の周囲に配置される配管と、前記複数の給水加熱器が移動可能に設置されるレールと、該レール上を移動して所定位置に来た前記給水加熱器を吊上げる吊装置と、該吊装置及び前記レールを支持するモジュール架構とが、一体にモジュール化されて構成されていることを特徴とする。   In order to achieve the above object, the steam turbine equipment of the present invention is connected to the plurality of feed water heaters for heating the feed water to the equipment using the bleed air from the steam turbine, and connected to the plurality of feed water heaters. A pipe disposed around the heater, a rail on which the plurality of feed water heaters are movably installed, and a suspension device that lifts the feed water heater that has moved to the predetermined position by moving on the rails; The suspension device and the module frame that supports the rail are configured as a unitary module.

また、本発明の蒸気タービン設備における給水加熱器の搬入方法は、上記目的を達成するために、蒸気タービンからの抽気を用いて機器への給水を加熱する複数の給水加熱器と、該複数の給水加熱器に接続され、該給水加熱器の周囲に配置される配管と、前記複数の給水加熱器が移動可能に設置されるレールと、該レール上を移動して所定位置にきた前記給水加熱器を吊上げ移動させる吊装置と、該吊装置及び前記レールを支持するモジュール架構とが、一体にモジュール化されて構成される蒸気タービン設備における前記給水加熱器を搬入するに当たり、前記一体となってモジュール化された状態で、前記給水加熱器が搬入装置により所定の階に搬送され、その後、前記吊装置及びレールを介して所定の場所に搬入されることを特徴とする。   Further, in order to achieve the above object, a method for carrying in a feed water heater in a steam turbine facility according to the present invention includes a plurality of feed water heaters for heating feed water to equipment using bleed air from a steam turbine, and the plurality of feed water heaters. A pipe connected to the feed water heater and arranged around the feed water heater, a rail on which the plurality of feed water heaters are movably installed, and the feed water heating which has moved to the predetermined position by moving on the rail When carrying in the feed water heater in the steam turbine equipment in which the suspension device that lifts and moves the vessel and the module frame that supports the suspension device and the rail are modularized as a unit, In a modularized state, the feed water heater is transported to a predetermined floor by a carry-in device, and then carried into a predetermined place via the suspension device and a rail.

本発明によれば、給水加熱器、配管、レール及び吊装置等を建設現場で一体搬入することができ、配管工事、給水加熱器の搬入及び搬出作業などの工事期間を短縮することができる。   ADVANTAGE OF THE INVENTION According to this invention, a feed water heater, piping, a rail, a suspension apparatus, etc. can be carried in integrally at a construction site, and construction periods, such as piping construction, carrying in and carrying out of a feed water heater, can be shortened.

本発明の蒸気タービン設備の実施例１（３階層）を示す斜視図である。It is a perspective view which shows Example 1 (3rd hierarchy) of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例１における１階部分を示す平面図である。It is a top view which shows the 1st floor part in Example 1 of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例１における２階部分を示す平面図である。It is a top view which shows the 2nd floor part in Example 1 of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例１における３階部分を示す平面図である。It is a top view which shows the 3rd-floor part in Example 1 of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例１（３階層）を示す側面図である。It is a side view which shows Example 1 (3rd hierarchy) of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例２（２階層）を示す斜視図である。It is a perspective view which shows Example 2 (2nd hierarchy) of the steam turbine equipment of this invention. 本発明の蒸気タービン設備の実施例２（２階層）を示す側面図である。It is a side view which shows Example 2 (2nd hierarchy) of the steam turbine equipment of this invention.

以下、図示した実施例に基づいて本発明の蒸気タービン設備及び蒸気タービン設備における給水加熱器の搬入方法を説明する。なお、各実施例において、同一構成部品には同符号を使用する。   Hereinafter, based on the illustrated embodiment, a steam turbine facility of the present invention and a method for carrying in a feed water heater in the steam turbine facility will be described. In addition, in each Example, the same code | symbol is used for the same component.

図１乃至図５に本発明の蒸気タービン設備の実施例１を示し、蒸気タービン設備が３階層で形成される場合の例である。   1 to 5 show a first embodiment of the steam turbine equipment of the present invention, which is an example in which the steam turbine equipment is formed in three levels.

該図に示す本実施例の蒸気タービン設備は、蒸気タービン（図示せず）からの抽気を用いて、ボイラ又は原子炉等の機器への給水を加熱する複数の給水加熱器１と、この複数の給水加熱器１に接続され、給水加熱器１の周囲に配置される配管２と、複数の給水加熱器１が移動可能に床３の上に設置されるレール４と、このレール４上を移動して所定位置に来た給水加熱器１を吊上げる吊装置５と、この吊装置５及びレール４を支持するモジュール架構６とが、一体にモジュール化されて構成されている。   The steam turbine equipment of the present embodiment shown in the figure includes a plurality of feed water heaters 1 for heating feed water to equipment such as a boiler or a reactor using extraction from a steam turbine (not shown), Are connected to the feed water heater 1, a pipe 2 disposed around the feed water heater 1, a rail 4 on which the plurality of feed water heaters 1 are movably installed on the floor 3, and on the rail 4 A suspension device 5 that lifts the feed water heater 1 that has moved to a predetermined position and a module frame 6 that supports the suspension device 5 and the rail 4 are configured as a single unit.

また、上記吊装置５は、モジュール架構６に移動可能に設置され、３階に積層されている一体にモジュール化された構成の各階の境界部分（１階と２階及び２階と３階の境界部分）には、取外し床７が設置されている。   In addition, the suspension device 5 is movably installed on the module frame 6 and is arranged on the third floor so as to be integrated into a modular structure. The boundary portion of each floor (the first floor and the second floor and the second floor and the third floor). A removal floor 7 is installed in the boundary portion.

なお、給水加熱器１、配管２、床３の上に設置されるレール４、吊装置５及びモジュール架構６を一体にするモジュール化は工場等で行い、給水加熱器１の段数に合わせて、１〜３階の最適な階層を選定して製作される。製作した階層分のモジュールの現地への運搬はトレーラ等で行い、現地ではクレーン等を用いて３階まで上述した構成のモジュールの搬入を行って配管等の接続を含めた据付を行い、据付が完了する。   In addition, modularization which integrates the feed water heater 1, the pipe 2, the rail 4 installed on the floor 3, the suspension device 5 and the module frame 6 is performed in a factory or the like, and according to the number of stages of the feed water heater 1, It is produced by selecting the optimum floors on the 1st to 3rd floors. Transport the modules for the level of production to the site using a trailer, etc., and use a crane etc. to carry in the module with the configuration described above up to the third floor and install it, including the connection of piping, etc. Complete.

即ち、蒸気タービン設備における給水加熱器１の搬入の際には、給水加熱器１、配管２、床３の上に設置されるレール４、吊装置５及びモジュール架構６が一体となってモジュール化された状態で、給水加熱器１が、クレーン等の搬入装置により各階に搬送され、その後、吊装置５及びレール４を介して所定の位置に搬入される（図５の状態）。これは、一体にモジュール化された構成が３階まで積層され、かつ、一体となってモジュール化された状態の給水加熱器１が、各階毎にクレーン等の搬入装置により搬送され、その後、吊装置５及びレール４を介して所定の位置に搬入されるものである。   That is, when the feed water heater 1 is carried in the steam turbine equipment, the feed water heater 1, the pipe 2, the rail 4 installed on the floor 3, the suspension device 5 and the module frame 6 are integrated into a module. In this state, the feed water heater 1 is transported to each floor by a carry-in device such as a crane and then carried into a predetermined position via the suspension device 5 and the rail 4 (state shown in FIG. 5). This is because the unitized modular structure is stacked up to the third floor, and the water heater 1 in a modular state is transported by a loading device such as a crane for each floor, and then suspended. It is carried into a predetermined position via the device 5 and the rail 4.

次に、給水加熱器１の搬出について説明する。   Next, carrying out of the feed water heater 1 will be described.

本実施例において、各階の給水加熱器１を搬出する際は、１階と２階及び２階と３階の境界部分に設置されている取外し床７を取外して空間を形成し、３階の給水加熱器１をレール４上を吊装置５の下部まで移動した後（図４の破線で示す給水加熱器１の状態）、吊装置５で図１の左側の取外し床７を取外すことで形成される空間を利用して、給水加熱器１を１階まで吊下げて搬出する。   In this embodiment, when carrying out the water heater 1 on each floor, the removal floor 7 installed at the boundary between the first floor and the second floor and the second floor and the third floor is removed to form a space. After the feed water heater 1 is moved on the rail 4 to the lower part of the suspension device 5 (the state of the feed water heater 1 shown by the broken line in FIG. 4), the removal floor 7 on the left side of FIG. The feed water heater 1 is hung up to the first floor and carried out using the space.

また、２階の給水加熱器１を搬出する際は、レール４上を吊装置５の下部まで移動した後（図３の破線で示す給水加熱器１の状態）、吊装置５で図１の右側の取外し床７を取外すことで形成される空間を利用して、給水加熱器１を１階まで吊下げて搬出する。   Moreover, when carrying out the water heater 1 of the second floor, after moving on the rail 4 to the lower part of the suspension apparatus 5 (state of the water heater 1 shown with the broken line of FIG. 3), the suspension apparatus 5 of FIG. Using the space formed by removing the removal floor 7 on the right side, the feed water heater 1 is suspended and carried to the first floor.

なお、１階の給水加熱器１を搬出する際は、レール４上を図１の右端部まで給水加熱器１を移動した後、２階の吊装置５で吊上げて１階の中央部分まで移動（図２の破線で示す給水加熱器１の状態）して搬送する。   When carrying out the water heater 1 on the first floor, after moving the water heater 1 on the rail 4 to the right end of FIG. 1, it is lifted by the suspension device 5 on the second floor and moved to the center of the first floor. (The state of the feed water heater 1 shown by the broken line in FIG. 2) and then transported.

このような本実施例とすることにより、モジュールとして、給水加熱器１、配管２、床３の上に設置されるレール４、吊装置５及びモジュール架構６等を建設現場で一体搬入することができるため、配管工事、搬出作業などの工事期間を短縮することが可能である。また、給水加熱器１の段数を増やす際に、モジュールの追加を行うことで対応が可能であるため、現地での工事期間の短縮が可能となる。   By setting it as such a present Example, the feed water heater 1, the piping 2, the rail 4 installed on the floor 3, the suspension apparatus 5, the module frame 6, etc. can be carried in integrally at a construction site as a module. Therefore, it is possible to shorten the construction period such as piping work and unloading work. Further, when the number of stages of the feed water heater 1 is increased, it is possible to cope with the problem by adding modules, so that the construction period at the site can be shortened.

なお、発電所等の効率改善等で給水加熱器１の段数を増やす際は、給水加熱器１、配管２、床３の上に設置されるレール４、吊装置５及びモジュール架構６がモジュール化された上に、更にモジュール化された給水加熱器１、配管２、床３の上に設置されるレール４、吊装置５及びモジュール架構６を載せて固定することで可能であり、最後に配管等の接続を行い据付完了となる。   In addition, when increasing the number of stages of the feed water heater 1 in order to improve the efficiency of the power plant, etc., the feed water heater 1, the pipe 2, the rail 4 installed on the floor 3, the suspension device 5 and the module frame 6 are modularized. Furthermore, it is possible to mount and further fix the modular feed water heater 1, the pipe 2, the rail 4 installed on the floor 3, the suspension device 5 and the module frame 6, and finally the pipe Connection is completed and installation is completed.

図６及び図７に本発明の蒸気タービン設備の実施例２を示し、蒸気タービン設備が２階層で形成される場合の例である。   6 and 7 show a second embodiment of the steam turbine equipment of the present invention, which is an example in which the steam turbine equipment is formed in two layers.

該図に示す本実施例は、実施例１の３階部分を省いた状態であり、給水加熱器の搬入及び搬出は、実施例１で説明した搬入、搬出と同一なので説明は省略する。   The present embodiment shown in the figure is in a state in which the third floor portion of the first embodiment is omitted, and the carry-in and carry-out of the feed water heater are the same as the carry-in and carry-out described in the first embodiment, and thus description thereof is omitted.

このような本実施例の構成であっても、その効果は実施例１と同様である。   Even with the configuration of this embodiment, the effect is the same as that of the first embodiment.

１…給水加熱器、２…配管、３…床、４…レール、５…吊装置、６…モジュール架構、７…取外し床。   DESCRIPTION OF SYMBOLS 1 ... Feed water heater, 2 ... Piping, 3 ... Floor, 4 ... Rail, 5 ... Suspension device, 6 ... Module frame, 7 ... Removal floor.

Claims (7)

蒸気タービンからの抽気を用いて機器への給水を加熱する複数の給水加熱器と、該複数の給水加熱器に接続され、該給水加熱器の周囲に配置される配管と、前記複数の給水加熱器が移動可能に設置されるレールと、該レール上を移動して所定位置に来た前記給水加熱器を吊上げる吊装置と、該吊装置及び前記レールを支持するモジュール架構とが、一体にモジュール化されて構成されていることを特徴とする蒸気タービン設備。   A plurality of feed water heaters for heating the feed water to the equipment using the bleed air from the steam turbine, pipes connected to the plurality of feed water heaters and arranged around the feed water heater, and the plurality of feed water heatings A rail on which the vessel is movably installed, a suspension device that lifts the feed water heater that has moved to the predetermined position by moving on the rail, and a module frame that supports the suspension device and the rail are integrally formed. A steam turbine facility characterized by being modularized. 請求項１に記載の蒸気タービン設備において、
前記一体にモジュール化された構成は、複数階に積層されていることを特徴とする蒸気タービン設備。 The steam turbine equipment according to claim 1,
The integrally modularized structure is stacked on a plurality of floors. 請求項１又は２に記載の蒸気タービン設備において、
前記吊装置は、前記モジュール架構に移動可能に設置されていることを特徴とする蒸気タービン設備。 The steam turbine equipment according to claim 1 or 2,
The said suspension apparatus is installed in the said module frame so that a movement is possible, The steam turbine equipment characterized by the above-mentioned. 請求項２又は３に記載の蒸気タービン設備において、
前記複数階に積層されている前記一体にモジュール化された構成の境界部分に、取外し床が設置されていることを特徴とする蒸気タービン設備。 In the steam turbine equipment according to claim 2 or 3,
A steam turbine facility, wherein a removal floor is installed at a boundary portion of the integrally modularized structure stacked on the plurality of floors. 蒸気タービンからの抽気を用いて機器への給水を加熱する複数の給水加熱器と、該複数の給水加熱器に接続され、該給水加熱器の周囲に配置される配管と、前記複数の給水加熱器が移動可能に設置されるレールと、該レール上を移動して所定位置にきた前記給水加熱器を吊上げ移動させる吊装置と、該吊装置及び前記レールを支持するモジュール架構とが、一体にモジュール化されて構成される蒸気タービン設備における前記給水加熱器を搬入するに当たり、
前記一体となってモジュール化された状態で、前記給水加熱器が搬入装置により所定の階に搬送され、その後、前記吊装置及びレールを介して所定の場所に搬入されることを特徴とする蒸気タービン設備における給水加熱器の搬入方法。 A plurality of feed water heaters for heating the feed water to the equipment using the bleed air from the steam turbine, pipes connected to the plurality of feed water heaters and arranged around the feed water heater, and the plurality of feed water heatings A rail on which the vessel is movably installed, a suspension device that lifts and moves the feed water heater that has moved to the predetermined position by moving on the rail, and a module frame that supports the suspension device and the rail are integrally formed. In carrying in the feed water heater in the steam turbine equipment configured as a module,
The steam, wherein the feed water heater is transported to a predetermined floor by a carry-in device in the integrated and modularized state, and then carried to a predetermined place through the suspension device and rails. A method for carrying in a feed water heater in a turbine facility. 請求項５に記載の蒸気タービン設備における給水加熱器の搬入方法において、
前記一体にモジュール化された構成が複数階に積層され、かつ、前記一体となってモジュール化された状態の給水加熱器が、各階毎に前記搬入装置により搬送されることを特徴とする蒸気タービン設備における給水加熱器の搬入方法。 In the feed method of the feed water heater in the steam turbine equipment according to claim 5,
A steam turbine characterized in that the integrally modularized structure is stacked on a plurality of floors, and the integrated water heater is transported by the carry-in device for each floor. How to bring in the water heater in the facility. 請求項６に記載の蒸気タービン設備における給水加熱器の搬入方法において、
前記複数階に積層されている前記一体にモジュール化された構成の境界部分に、取外し床が設置され、前記一体となってモジュール化された状態の給水加熱器を搬出する際は、前記取外し床を取外して空間を形成し、前記給水加熱器を前記レール上を前記吊装置の下部まで移動した後、前記吊装置で前記空間を利用して前記給水加熱器を吊下げて搬出することを特徴とする蒸気タービン設備における給水加熱器の搬入方法。 In the feed-in method of the feed water heater in the steam turbine equipment according to claim 6,
When a removal floor is installed at a boundary portion of the integrally modularized structure laminated on the plurality of floors, the removal floor is used when carrying out the water heater in a modularized state. A space is formed by removing the water heater, the water heater is moved to the lower part of the suspension device on the rail, and then the water heater is suspended and carried out using the space by the suspension device. A method for carrying in a feed water heater in a steam turbine facility.
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