JP6450663B2 - Steam turbine equipment and method for carrying in feed water heater in steam turbine equipment - Google Patents

Description

  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.

  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.

  Patent Document 1 describes a condenser installation method for shortening the installation period.

  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.

JP 2002-243386 A

  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.

  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.

  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.

  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.

  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.

  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.

It is a perspective view which shows Example 1 (3rd hierarchy) of the steam turbine equipment of this invention. It is a top view which shows the 1st floor part in Example 1 of the steam turbine equipment of this invention. It is a top view which shows the 2nd floor part in Example 1 of the steam turbine equipment of this invention. It is a top view which shows the 3rd-floor part in Example 1 of the steam turbine equipment of this invention. It is a side view which shows Example 1 (3rd hierarchy) of the steam turbine equipment of this invention. It is a perspective view which shows Example 2 (2nd hierarchy) of the steam turbine equipment of this invention. It is a side view which shows Example 2 (2nd hierarchy) of the steam turbine equipment of this invention.

  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.

  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.

  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.

  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.

  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.

  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.

  Next, carrying out of the feed water heater 1 will be described.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  Even with the configuration of this embodiment, the effect is the same as that of the first embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Feed water heater, 2 ... Piping, 3 ... Floor, 4 ... Rail, 5 ... Suspension device, 6 ... Module frame, 7 ... Removal floor.

Claims (7)

  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. The steam turbine equipment according to claim 1,
The integrally modularized structure is stacked on a plurality of floors. 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. 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. 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. 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. 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 the 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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