Moisture separation heater module and method for installing moisture separation heater

Abstract

A moisture separation heater module is provided with: a moisture separation heater including a cylindrical body extending so as to have a longitudinal axis; and an installation structure for supporting the moisture separation heater, the installation structure comprising: a frame; and a support mechanism that is fixed to the upper part of the frame and has a suspension member that suspends and supports the moisture separation heater at at least two different positions in the direction of the longitudinal axis so that the longitudinal axis extends in the horizontal direction.

Description

Technical Field

[0001] This invention relates to a wet separation heater module and a method for setting up the wet separation heater.

[0002] This application claims priority based on Japanese Patent No. 2023-112498, filed on July 7, 2023, with the contents of which are incorporated herein by reference. Background Technology

[0003] In nuclear power plants, a wet separation heater is used to remove moisture from the wet steam discharged from the high-pressure turbine. The saturated steam after moisture removal is then reheated using main steam and extraction steam from the high-pressure turbine, thus supplying it to the low-pressure turbine as high-temperature steam. This improves the overall thermal efficiency of the entire system and suppresses erosion of the low-pressure turbine. As described in Patent Document 1, the wet separation heater is installed on the beams of the turbine building, for example, on the operating floor or the floor below it.

[0004] Previous technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2007-139460 Summary of the Invention

[0007] The technical problem to be solved by the invention

[0008] However, placing the wet separation heater on the beams of the plant presents difficulties in moving or installing it. Furthermore, there are issues regarding wiring or support structures that need to consider the thermal expansion of the piping connecting the turbine and the wet separation heater, as well as the thermal deformation of the heater's main body. These problems are particularly pronounced when installing the wet separation heater in a small modular furnace.

[0009] In view of the above, the object of at least one embodiment of the present invention is to provide a wet separation heater module and a method for installing a wet separation heater that facilitates the installation of the wet separation heater.

[0010] means for solving technical problems

[0011] To achieve the above objectives, the wet separation heater module of the present invention comprises: a wet separation heater including a cylindrical body extending in a longitudinal direction axis; and a mounting structure supporting the wet separation heater, the mounting structure comprising: a frame; and a support mechanism fixed to the upper part of the frame and having a suspension member, the suspension member suspending and supporting the wet separation heater at at least two different positions along the longitudinal direction axis in a manner extending horizontally along the longitudinal direction axis.

[0012] Invention Effects

[0013] According to the wet separation heater module of the present invention, the wet separation heater can be installed in the installation position by pre-assembling the wet separation heater module and moving the wet separation heater module into and setting it in the installation position, or by assembling the wet separation heater module in the installation position, thus making the installation of the wet separation heater easy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a power plant equipped with a wet separation heater module according to an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of a moisture separation heater module according to one embodiment of the present invention.

[0016] Figure 3 This is a diagram showing the angle between the length axis L of the main body of the wet separation heater in the wet separation heater module according to an embodiment of the present invention and the horizontal direction.

[0017] Figure 4 This is a schematic diagram of the structure of a moisture separation heater module according to one embodiment of the present invention. Detailed Implementation

[0018] Hereinafter, a moisture separation heater module based on an embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments described below represent one aspect of the present invention and are not intended to limit the present invention; modifications can be made freely within the scope of the technical concept of the present invention.

[0019] <Structure of a moisture separation heater module according to one embodiment of the present invention>

[0020] like Figure 1As shown, the power plant 1 is equipped with a high-pressure steam turbine 2, a low-pressure steam turbine 3, a moisture separation heater 4 that removes moisture from the wet steam discharged from the high-pressure steam turbine 2 and reheats the saturated steam after moisture removal, a steam generating device 5 (not limited, for example, a steam generator) that generates steam used in the high-pressure steam turbine 2 and the moisture separation heater 4, and a condenser 7 that condenses the steam discharged from the low-pressure steam turbine 3.

[0021] The wet separation heater 4 includes: a wet separation section 4a for removing moisture from wet steam; and a reheat section 4b for reheating the saturated steam in which moisture has been removed in the wet separation section 4a.

[0022] like Figure 2 As shown, the wet separation heater 4 is configured as a wet separation heater module 10 supported by the mounting structure 11. That is, the wet separation heater module 10 includes the wet separation heater 4 and the mounting structure 11 supporting the wet separation heater 4. The mounting structure 11 includes a frame 12 installed at the installation location and a support mechanism 13 fixed to the upper part of the frame 12. There are no particular limitations on the structure of the frame 12 and the support mechanism 13, but the frame 12 and the support mechanism 13 can each be constructed by assembling multiple L-shaped steel members. In particular, since the frame 12 is installed on the ground of the installation site, the small area of ​​the ground where the wet separation heater module 10 is installed should also be considered depending on the installation site. Therefore, the frame 12 is preferably constructed by assembling slender members such as L-shaped steel members, and the frame 12 is supported on the ground by the lower ends of multiple slender members extending in the vertical direction abutting against the ground. In addition, it is preferable to have a structure in which no wall-like members are provided in the parts other than the slender members, and no other members are provided in the parts other than the slender members, that is, an open structure. This structure allows the interior of the frame 12 and support mechanism 13 to be seen through the opening formed by the slender member, and allows access to the interior from the outside through the opening. Furthermore, the slender member is not limited to L-shaped steel, but can also be a rod-shaped member with an arbitrary cross-sectional shape in the longitudinal direction.

[0023] The wet separation heater 4 includes a cylindrical body 4c extending along a longitudinal axis L. The aforementioned wet separation section 4a (see reference) is housed within the body 4c. Figure 1 ) and reheat section 4b (reference) Figure 1 The wet separation heater 4 is supported in the support mechanism 13 such that its length axis L extends horizontally. However, "length axis L extends horizontally" does not simply mean that the length axis L is completely horizontal; for example... Figure 3As shown, the length axis L can also be at an angle θ relative to the horizontal direction. Preferably, this angle θ is as small as possible, but it should be less than 90°, that is, the angle at which the length axis L does not face the vertical direction. Preferably, it is less than 60°, more preferably less than 45°, more preferably less than 30°, and most preferably less than 10°.

[0024] like Figure 2 and 4 As shown, the support mechanism 13 includes a suspension member 14 for suspending and supporting the wet separation heater 4. The suspension member 14 has a first part 14a and a second part 14b that suspend and support the wet separation heater 4 at two different positions along the longitudinal axis L. The first part 14a and the second part 14b each include: a support member 15 that supports the main body 4c of the wet separation heater 4 from below; and two suspension rods 16, 16, one end of which is fixed to the support mechanism 13, and the other end of which is fixed to the support member 15. The structure of the support member 15 is not particularly limited; for example, it can be a strip-like member or a plate-like member with a recess at its upper edge corresponding to the outer periphery shape of the main body 4c. Furthermore, in Figure 2 In this structure, the suspension component 14 is composed of two components, a first component 14a and a second component 14b. However, it is not limited to two components as long as at least two positions along the longitudinal axis are different, and it can be composed of three or more components. In this structure, if the lengths of the suspension rod components 16 of the first component 14a and the second component 14b are different, the wet separation heater 4 can be suspended in a state where the longitudinal axis L is inclined relative to the horizontal direction (0° < θ < 90°).

[0025] The wet separation heater 4 includes a wet separation condensate tank 17 for storing wet condensate, wherein the wet condensate is stored in the wet separation section 4a within the main body 4c (reference). Figure 1 The moisture is separated mechanically from the wet steam engine. The location of the moisture separation condensate tank 17 is not particularly limited; it can be fixed to the main body 4c. While fixing the moisture separation condensate tank 17 to the main body 4c is not limited, it is preferable that it be fixed to the lowest position of the main body 4c in the vertical direction. This allows for efficient collection of moisture into the moisture separation condensate tank 17.

[0026] Since the wet separation heater 4 is suspended and supported in the support mechanism 13 fixed to the upper part of the frame 12, the wet separation drain tank 17, which is fixed to the main body 4c of the wet separation heater 4, is at a certain height from the ground where the wet separation heater module 10 is located. As a result, the wet drain in the wet separation drain tank 17 can be transported via the piping 17a by the water head pressure, so it is not necessary to install a drain pump for transporting the wet drain in the wet separation drain tank 17 on the piping 17a.

[0027] As other related devices, the wet separation heater 4 includes a wet separation heater condensate tank 18 for storing condensate, which is located in the reheat section 4b within the main body 4c (see reference). Figure 1 The condensate is obtained by condensing heated steam that has undergone heat exchange with the saturated steam after moisture removal. The location of the condensate tank 18 for the moisture separator heater is not particularly limited, but it can be installed on the mounting structure 11, preferably on the frame 12. With this structure, since the condensate tank 18 is also installed in the moisture separator heater module 10, not only can the moisture separator heater 4 be easily installed, but its related devices can also be easily installed. Furthermore, the condensate in the condensate tank 18 can be transported from the condensate tank 18 to any location via piping 18a.

[0028] The wet separation heater 4 may have an inlet 4d for wet steam to flow into it at one end 4c1 along the longitudinal axis L. With this structure, the piping 19 that allows the wet steam to flow into the wet separation heater 4 is not located below it, thus allowing the frame 12 of the structure 11 to be designed as a compact structure. Alternatively, although this effect cannot be achieved, the inlet 4d may be provided at either the lowest or highest position of the main body 4c in the vertical direction.

[0029] Since the wet separation heater 4 is suspended and supported in the support mechanism 13, it will sway during an earthquake. There is also a concern that the wet separation heater 4 might fall if the suspension rod component 16 breaks. Therefore, in earthquake-prone countries like Japan, it is preferable to install a damper to suppress the swaying of the wet separation heater 4.

[0030]

[0031] Next, the installation method of the wet separation heater 4 will be described. The wet separation heater module 10 is assembled at a location different from the location where the wet separation heater 4 is installed. If the wet separation heater drain tank 18 is installed in the installation structure 11, the wet separation heater drain tank 18 is installed in the installation structure 11 when assembling the wet separation heater module 10. Next, the wet separation heater module 10 is placed in the installation position using a crane or the like, and the wet separation heater 4 is installed by connecting the power plant 1 piping to it.

[0032] In another method of installing the wet separation heater 4, a frame 12, which is part of the installation structure 11, is assembled at the installation location. When the wet separation heater drain tank 18 is installed on the frame 12, the wet separation heater drain tank 18 is installed on the frame 12 after the frame 12 is assembled. Next, at a location different from the location where the wet separation heater 4 is installed, the wet separation heater 4 is prepared to be suspended and supported on the support mechanism 13. The support mechanism 13 for suspending and supporting the wet separation heater 4 is placed on the upper part of the frame 12 using a crane or the like, and the support mechanism 13 is fixed to the frame 12. Thus, the wet separation heater module 10 is formed at the installation location, and therefore the wet separation heater 4 is installed at the installation location.

[0033] Thus, by pre-assembling the wet separation heater module 10 and moving the wet separation heater module 10 into and setting it in the setting position, or by assembling the wet separation heater module 10 in the setting position, the wet separation heater 4 can be set in the setting position, thus making the setting of the wet separation heater 4 easy.

[0034] The contents described in the above embodiments can be understood, for example, as follows.

[0035] [1] The moisture separation heater module 10 involved in one method comprises:

[0036] The wet separation heater 4 includes a cylindrical body 4c extending along a longitudinal axis L; and

[0037] Structure 11 is provided to support the moisture separation heater 4.

[0038] The configuration structure 11 includes:

[0039] Framework 12; and

[0040] The support mechanism 13 is fixed to the upper part of the frame 12 and has a suspension component 14.

[0041] The suspension component 14 suspends and supports the moisture separation heater 4 at at least two different positions along the length axis L, with the length axis L extending horizontally.

[0042] According to the wet separation heater module of the present invention, the wet separation heater can be installed in the installation position by pre-assembling the wet separation heater module and moving the wet separation heater module into and setting it in the installation position, or by assembling the wet separation heater module in the installation position, thus making the installation of the wet separation heater easy.

[0043] [2] The other method involves the wet separation heater module of [1], wherein,

[0044] The wet separation heater 4 has an inlet 4d at one end 4c1 along the length axis L for the wet steam to flow into the wet separation heater 4.

[0045] According to this structure, the piping for the flow of wet steam into the wet separation heater can be located outside the wet separation heater, thus allowing the frame of the structure to be designed as a compact structure.

[0046] [3] Another approach involves a wet separation heater module of [1] or [2], wherein,

[0047] The wet separation condensate tank 17 is fixed on the main body 4c. The wet separation condensate tank 17 stores the wet condensate separated from the wet vapor in a mechanical manner inside the main body 4c.

[0048] With this structure, since the wet separation heater is suspended and supported in a support mechanism fixed to the upper part of the frame, the wet separation condensate tank, which is fixed to the main body of the wet separation heater, is at a certain height from the ground where the wet separation heater module is located. Therefore, the wet condensate in the wet separation condensate tank can be transported by head pressure, thus eliminating the need for a condensate pump to transport the wet condensate in the tank.

[0049] [4] In another embodiment, the wet separation heater module is the wet separation heater module described in any one of [1] to [3], wherein,

[0050] The wet separation heater condensate tank 18 is fixed on the frame 12, and the wet separation heater condensate tank 18 stores the condensate generated by the condensation of heating steam in the main body 4c.

[0051] With this structure, since the condensate tank of the wet separation heater is also located in the wet separation heater module, it is easy to install not only the wet separation heater but also its related devices.

[0052] [5] The method for setting up the wet separation heater involved in one approach includes the following steps:

[0053] Prepare the wet separation heater module 10 as described in any one of [1] to [4]; and

[0054] The moisture separation heater module 10 is installed.

[0055] According to the method for setting up the wet separation heater of the present invention, by pre-assembling the wet separation heater module and moving the wet separation heater module into and setting it in the setting position, the wet separation heater can be set in the setting position, thus making the setting up of the wet separation heater easy.

[0056] [6] A method for setting up a wet separation heater, wherein,

[0057] The wet separation heater module 10 described in any one of [1] to [4] is constructed by the following steps:

[0058] The framework 12 is configured; and

[0059] The support mechanism 13 that suspends and supports the wet separation heater 4 is fixed to the frame 12.

[0060] According to the method for setting up the wet separation heater of the present invention, by assembling the wet separation heater module at the setting location, the wet separation heater can be set at the setting location, thus making the setting up of the wet separation heater easy.

[0061] [7] A method for setting up a wet separation heater, wherein,

[0062] [4] The moisture separation heater module 10 is constructed through the following steps:

[0063] The framework 12 is configured;

[0064] The wet separation heater condensate tank 18 is fixed on the frame 12; and

[0065] After fixing the wet separation heater condensate tank 18 to the frame 12, fix the support mechanism 13 that suspends and supports the wet separation heater 4 to the frame 12.

[0066] According to the method for setting up the wet separation heater of the present invention, not only can the wet separation heater be easily set up, but also its related devices can be easily set up.

[0067] Symbol Explanation

[0068] 4-Wet separation heater, 4c-Main body, 4c1-(One of the ends of the main body) 4d-Inlet, 10-Wet separation heater module, 11-Setting structure, 12-Frame, 13-Supporting mechanism, 14-Suspension component, 17-Wet separation drain tank, 18-Wet separation heater drain tank, L-Length axis.

Claims

1. A moisture separation heater module, comprising: A wet separation heater, comprising a cylindrical body extending along a longitudinal axis; and A structure is provided to support the moisture separation heater. The configuration structure includes: Framework; and A support mechanism, fixed to the upper part of the frame, and having a suspension component. The suspension component suspends and supports the moisture separation heater at at least two different locations along the length axis, with the length axis extending horizontally.

2. The moisture separation heater module according to claim 1, wherein, The wet separation heater has an inlet at one end along the direction of the axis of length for the flow of wet steam into the wet separation heater.

3. The moisture separation heater module according to claim 1 or 2, wherein, The wet separation condensate tank is fixed to the main body, and the wet separation condensate tank stores the wet condensate separated from the wet vapor mechanically inside the main body.

4. The moisture separation heater module according to claim 1 or 2, wherein, The wet separation heater condensate tank is fixed on the frame, and the wet separation heater condensate tank stores the condensate generated by the condensation of heating steam inside the main body.

5. A method for setting up a wet separation heater, comprising the following steps: Prepare the moisture separation heater module as described in claim 1 or 2; and The moisture separation heater module is installed.

6. A method for setting up a wet separation heater, in, The moisture separation heater module according to claim 1 or 2 is constructed by the following steps: Configure the aforementioned framework; and The support mechanism that suspends and supports the wet separation heater is fixed to the frame.

7. A method for setting up a wet separation heater, wherein, The moisture separation heater module of claim 4 is constructed by the following steps: Configure the aforementioned architecture; The condensate tank of the moisture separation heater is fixed on the frame; and After fixing the condensate tank of the wet separation heater to the frame, the support mechanism that suspends and supports the wet separation heater is fixed to the frame.

Images