JPH11325405A - Fixing tool for feed water heater and fixing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily carry in and out a feed water heater from a narrow opening of an entrance and exit on a floor while varying the suspending posture of the heater vertically or horizontally, by mounting a suspending tool and a move truck when carrying in or out the feed water heater. SOLUTION: A feed water heater 1 is lifted up by an overhead travelling crane 8 through a suspending tool 18 having a suspending rope 15 and moved to the direction of an arrow 14. The other end of the feed water heater 1 is pushed in the direction of the arrow 14 following the movement of the overhead travelling crane 8 so as to make the movement smooth. A move truck 21 is taken off at a machinery entrance and exit 10 on a generator room floor 6 and then the feed water heater 1 is lifted down together with the suspending tool 18 by the overhead travelling crane 8 in the direction of an arrow 24. Before the lower end of the feed water heater 1 reaches a feed water heater room floor 7, the move truck 21 is mounted again. Further, after the move truck 21 has arrived at the feed water heater room floor 7 being lifted down by the overhead travelling crane 8, the move truck 21 again pulls and moves the lower part of the feed water heater 1 in the direction of an arrow 25 by means of a winch or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed water heater installation jig for a power generator used in a power plant or the like, for carrying a feed water heater having a long shape in the axial direction from an installation building. And installation method.

[0002]

2. Description of the Related Art As for a feed water heater for a power generator used in a power plant or the like, as shown in a longitudinal sectional view of a main part of FIG. 9A and a cross sectional view of a main part of FIG. A feed heater 1 that is long and large and heavy is installed in a feed water heater room 4 on the basement floor of a turbine building 3 where a turbine generator 2 is generally installed in a power plant, and a generator room floor in a generator room 5. Before the building 6 is constructed, a plurality of units are installed side by side on the feed water heater room floor 7 of the feed water heater room 4 on a plurality of floors.

However, when it is necessary to replace the feed water heater 1 with a new one due to equipment deterioration due to long-term operation of the power generation equipment, the old feed water heater 1 is replaced with a power plant building. Take out from the feed water heater room 4 of 3,
Instead, replacement work for carrying in the new feed water heater 1 is performed.

[0004] In the turbine building 3,
As shown in the main part vertical cross-sectional view of FIG. 10, even a heavy equipment such as the feed water heater 1 is provided with an overhead crane 8 which is a lifting tool of a lifting load capable of transporting these. Therefore, even when replacement work of the feed water heater 1 which is a large heavy object occurs, it is easy to carry out lifting and lowering of the feed water heater 1 and the like.

However, with regard to the overhead crane 8 installed in the generator room 5 of the turbine building 3, the hook rising H from the generator room floor 6, which is the highest hoisting position, moves the feed water heater 1 in the horizontal direction. There is no problem in the suspended posture. However, in order to suspend the feed water heater 1 in a vertical position, the height H of the hook from the generator room floor 6 of the overhead crane 8 is limited by the height of the ceiling 9 of the turbine building 3. It is usually not sufficient for the vertical lifting height which is the direction length L.

[0009] As shown in FIG. 9, the equipment carrying-in / out port 10 around the installation location of the feed water heater 1 is not so large that the water supply heater 1 is kept in a horizontal posture and the water supply heater 10 is kept in a suspended position. It is not possible to carry in / out directly from the equipment carrying-in / out entrance 10 near the place where the heater 1 is installed.

Therefore, conventionally, when the feed water heater 1 is replaced, as shown in a vertical sectional view of a main part of FIG.
11a, a part 6a of the generator room floor 6 and a part 7a of the feed water heater room floor 7 were temporarily removed, and then the overhead crane 8 and the dedicated cart 12 were used. This results in arrow 13
Alternatively, the old feed water heater 1 is carried out by moving in the directions indicated by the arrows 14 and 13 and the arrow 13 or the arrow 14 and the arrow
The new feed water heater 1 was moved in the opposite direction of 13 and carried in and installed.

[0008]

When the feed water heater 1 is replaced, the surrounding building wall 11, the generator room floor 6, the feed water heater room floor 7, and the like are temporarily removed, and the feed water heater 1 is carried in and out. In some cases, the removal of the building wall 11, the floor 6 of the generator room, the floor 7 of the feed water heater, and the restoration of the floor 7 required a lot of labor and construction work. . In addition, during these various works, sufficient curing is necessary so that unnecessary vibrations and dust are not applied to devices and the like installed in the surroundings, and furthermore, after the work of carrying in / out of the feed water heater 1 is completed. There was an obstacle that took a long time to check.

An object of the present invention is to attach a hanging jig and a moving cart when carrying in and out the feed water heater, and change the hanging posture of the feed water heater vertically or horizontally to narrow the opening in the floor. It is an object of the present invention to provide a feed water heater installation jig and an installation method which can be easily carried in and out of a carry-in / out port of a feed water heater.

[0010]

According to a first aspect of the present invention, there is provided a feed water heater installation jig which is turned to one side in an axial direction by a suspension seat provided on a side of the feed water heater. It is characterized by comprising a hanging jig movably attached, and a moving jig attached to the end of the feed water heater on the opposite side of the attached hanging jig in the axial direction.

A suspension seat provided on a side surface of a long feed water heater, and a feed jig is suspended by a lifting tool so as to be suspended in a vertical position via a suspending jig rotatably attached to one of the axial directions. After being hung down from the carry-in / out entrance having a narrow opening, it is moved on the floor by a moving jig attached to the lower end of the feed water heater to be in a horizontal posture, and then moved toward a predetermined installation position.

According to a second aspect of the present invention, there is provided an installation jig for a feed water heater according to the first aspect, wherein one of the axial hanging seats provided on a side portion of the feed water heater includes a hanging jig hanging seat. It is characterized by having done. By setting one of the hanging seats provided on the side of the feed water heater in the axial direction as a hanging jig for the hanging jig in advance, the attaching and detaching of the hanging jig to and from the feed water heater can be easily and quickly performed.

According to a third aspect of the present invention, there is provided the installation jig for the feed water heater according to the first aspect, wherein the moving jig has an upper portion detachably attached to an end of the feed water heater and a lower portion provided with wheels. It is a trolley. At the lower end of the feed water heater suspended in a vertical position, a moving dolly as a moving jig is mounted, and the feed water heater is suspended from one side to move on the floor by wheels. When the feed water heater is in the horizontal position, the moving jig is removed.

According to a fourth aspect of the present invention, there is provided an installation jig for a feed water heater according to the first aspect, wherein the moving jig has a wheel rotatably provided on a holding seat formed at an end of the feed water heater. It is characterized by the following. By forming a holding seat at an end of the feed water heater in advance, and mounting the moving jig by rotatably attaching the wheel to the holding seat, the attaching and detaching work of the moving jig becomes unnecessary.

According to a fifth aspect of the present invention, there is provided a method for installing a feed water heater, wherein a hanging jig is rotatably mounted on one side in an axial direction by a hanging seat provided on a side portion of the feed water heater, and the hanging jig is provided in the axial direction. Attach a moving cart to the end of the feed water heater on the opposite side, change the posture of the feed water heater through the suspending jig, lift it up and down, and traverse the floor with the moving jig. It is characterized by moving in the direction.

The feed water heater is suspended by a rotatable hanging jig attached to one of the hanging seats provided on the side, and the feed water heater in the horizontal position is passed through the narrow carry-in / out port while the vertical position. Furthermore, the feed water heater in the vertical position, which has reached the floor surface after passing through the carry-in / out entrance, is moved on the floor surface by the jig for movement at the lower end to be in the horizontal position.

According to a sixth aspect of the present invention, there is provided an installation jig for a feed water heater according to the first aspect, wherein the moving jig has a feed water heater mounted on an upper portion thereof and can be freely moved on a floor surface. It is characterized by comprising an air caster and a guide rail provided on a floor surface for guiding the moving direction of the air caster.

The support of the lower end of the feed water heater suspended in the vertical position and the change of the position of the feed water heater to the horizontal position can be lightened because the air caster moves without directly touching the floor surface. The lateral movement of the air caster is guided by a guide rail.

According to a seventh aspect of the present invention, there is provided a method for installing a feed water heater, wherein a hanging jig is attached to one side in an axial direction by a hanging seat provided on a side portion of the feed water heater, and the feed water heater is lifted and lowered. It is mounted on an air caster on the floor surface and is moved laterally along a guide rail.

Since the moving jig is used as an air caster and the lateral movement of the air caster is guided by the guide rail, the lower end of the feed water heater suspended in the vertical position and the change of the position to the horizontal position can be achieved. The feed water heater in a horizontal position can be easily mounted on a plurality of air casters, and can be easily moved to a predetermined position.

An installation jig for a feed water heater according to an eighth aspect of the present invention includes a hanging jig rotatably mounted on one side in an axial direction by a hanging seat provided on a side portion of the feed water heater, and the hanging jig. A trunnion to be mounted on the hanging seat on the opposite side in the axial direction to the tool, and a hanging tool capable of adjusting the length attached to the trunnion,
A moving jig mounted on an end of the feed water heater on the trunnion side.

A suspension jig rotatably attached to one end of the feed water heater in the axial direction and a suspension jig which can be adjusted in length to a trunnion attached to the suspension jig and the opposite side in the axial direction are lifted in the same manner. Attach to the tool. At the end of the feed water heater on the trunnion side, a moving jig is mounted. This allows
The length of the hanging fixture whose length can be adjusted is changed, the feeding posture of the feed water heater is changed from horizontal to vertical, and passed through the loading / unloading port, and moved on the floor by the moving jig to level the feed water heater. Posture.

According to a ninth aspect of the present invention, there is provided an installation jig for a feed water heater according to the third or fourth or sixth and eighth aspects, wherein the moving jig comprises the moving trolley or the air caster. And a guide rail. The moving jig mounted on the end of the feed water heater at the trunnion side is a moving cart or an air caster. In the case of an air caster, the moving jig is guided in a moving direction by a guide rail.

According to a tenth aspect of the present invention, there is provided a method for installing a feed water heater, comprising: a hanging jig rotatably mounted on one side in an axial direction by a hanging seat provided on a side portion of the feed water heater; The hanging jig attached to the trunnion on the opposite side in the axial direction from the jig, and a moving dolly attached to the end of the feed water heater on the trunnion side, and the hanging jig and the hanging jig with adjustable length While raising and lowering the feed water heater by raising and lowering the ingredients together,
The posture of the feed water heater is changed by adjusting the length of the suspending device whose length is adjustable, and the hanging device is moved laterally on the floor by the moving jig.

A suspension jig rotatably attached to one end of the feed water heater in the axial direction and a suspension jig which can be adjusted in length to a trunnion attached to the suspension jig and the opposite side in the axial direction are lifted in the same manner. Hang the feed water heater on the fixture.

The feed water heater can be changed from a horizontal position to a vertical position by changing the length of the hanging member whose length can be adjusted, so that the horizontal position of the feed water heater can be changed while the vertical position is maintained. Pass through the loading / unloading entrance. Furthermore, the feed water heater in the vertical position, which has reached the floor surface after passing through the carry-in / out entrance, is moved on the floor surface by the jig for movement at the lower end to be in the horizontal position.

According to an eleventh aspect of the present invention, in the method for installing a feed water heater, in the tenth aspect, the suspending tool whose length can be adjusted is different from the suspending tool of the suspending jig. And

The lifting tool of the hanging jig rotatably mounted on one side of the feed water heater in the axial direction and the lifting tool of the trunnion mounted on the opposite side of the hanging jig and the axial direction are separate from each other. Therefore, the feed water heater can be changed from a horizontal position to a vertical position by changing the lifting length of each. This allows the horizontal position of the feed water heater to pass through the narrow carry-in / out port while keeping the horizontal position of the feed water heater in the vertical position, and the vertical position of the feed water heater that has reached the floor surface is moved on the floor surface by the jig for movement at the lower end to move horizontally. Posture.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. Note that the same components as those of the above-described related art are denoted by the same reference numerals, and detailed description thereof will be omitted. The first embodiment is directed to claims 1 to 5, wherein the installation jig of the feed water heater is a partially cutaway side view of FIG. 1, a plan view of FIG. 2 (a) and a plan view of FIG. As shown in the side view, hanging seats 17 for attaching trunnions 16 for hanging hanging ropes 15 during transport are provided on both sides before and after the feed water heater 1.

Among the installation jigs, a suspension jig 18 has a fork at one end and is rotatably attached to one suspension seat 17 in the axial direction of the feed water heater 1, and a suspension ring 19 is provided at the other end. It has a configuration. The moving jig among the installation jigs is a moving cart 21 provided with wheels 20 at a lower portion, and can be mounted on the opposite end of the feed water heater 1 on which the suspending jig 18 is attached. (Claims 1 and 3).

As a modification of the installation jig, FIG.
As shown in the plan views of (a) and (b) and the side view of (c), the suspension seat 17 of the feed water heater 1 is replaced with a suspension jig suspension seat 22 for which the suspension jig 18 can be easily attached and detached in advance. (Claim 2). In addition, a moving cart is used as the moving jig.
Instead of 21, a holding seat 23 to which a wheel 20 is rotatably mounted in advance is formed at an end of the feed water heater 1 (claim 4).

The moving carriage 21 or the holding seat 23
If the direction in which the feed water heater 1 is inclined from the vertical position to the horizontal position is determined, the wheels 20 attached to the right and left sides may be provided on one of the right and left sides.

Next, the operation of the above configuration will be described. For example, the feed water heater 1 in the generator room 5 in the turbine building 3 is carried into the feed water heater room 4 downstairs and suspended in the horizontal position by the overhead crane 8 in the horizontal posture. In the case of installation, first, a suspension jig 18 is attached to one of the suspension seats 17 provided on the side of the feed water heater 1. At the end of the feed water heater 1 on the side opposite to the hanging jig 18, a moving carriage 21 is mounted.

The feed water heater 1 is lifted by the overhead crane 8 via the hanging rope 15 in the hanging jig 18 and moved in the direction of the arrow 14. At this time, feed water heater 1
The other end of the wheel 20 is moved on the generator room floor 6 by the moving trolley 21.
, But if necessary, follow the movement of the overhead crane 8 and smoothly move by pushing in the direction of the arrow 14.

At the equipment entrance 10 of the generator room floor 6,
The moving carriage 21 is removed, and the feed water heater 1 is suspended from the jig 18.
At the same time, the trolley 21 is suspended by the overhead crane 8 in the direction of the arrow 24, and the moving carriage 21 is mounted again before the lower end reaches the feed water heater room floor 7. Further, after the moving trolley 21 reaches the feed water heater room floor 7 by hanging down the overhead crane 8, the lower part of the moving trolley 21 or the feed water heater 1 is indicated by an arrow 25 by a winch or the like (not shown). Tow in the direction to move.

When the vehicle is towed by the winch or the like, FIG.
As shown in the partially cutaway side view of FIG. 3, the overhead crane 8 is sequentially suspended in the direction of the arrow 24 in response to the movement of the carriage 21 in the direction of the arrow 25,
The feed water heater 1 can be tilted sequentially from a vertical position to a horizontal position on the feed water heater room floor 7.

The upper end of the feed water heater 1 is located at the entrance of the equipment.
When passing through 10, if necessary, the overhead crane 8 is slightly moved in the direction of the arrow 25 similarly to the moving carriage 21, so that the upper end of the feed water heater 1 interferes with the equipment carry-in / out port 10. Can be prevented (claim 5). After removing the hanging jig 18, the feed water heater 1 is moved to and installed at a predetermined position in the feed water heater room without using the overhead crane 8 by using a dedicated carriage 12, a winch, a jack or the like (not shown). Do the work.

Thus, the axial length L of the feed water heater 1
At the equipment entrance 10 having a narrower opening, the height H of the ceiling crane 8 from the generator room floor 6 is further increased due to the height of the ceiling 9 of the turbine building 3 and the like, and the axial length of the feed water heater 1 is increased. Even when the length is shorter than the length L, the feed water heater 1 can be passed through without any trouble. In addition, about the case of carrying out the feed water heater 1 from the feed water heater room,
The work can be carried out via the device carry-in / out entrance 10 by a work method substantially reverse to the above.

A suspension seat 22 for the hanging jig 18 is provided on a side surface of the feed water heater 1 in advance, and a holding seat 23 is provided on an end of the feed water heater 1 in advance.
By providing a moving jig by the wheels 20, the work of attaching and detaching the hanging jig 18 to and from the feed water heater 1 is simplified, and the work of attaching and detaching the moving cart 21 is unnecessary. Work efficiency and work reliability are improved.

Since the second embodiment is a modification of the moving jig according to the sixth and seventh aspects, a description will be given of the same components, operations and effects as those of the first embodiment. Are omitted, and different parts will be described. FIG. 5 (a)
6 (b), a front view of FIG. 6 (a) and (b)
As shown in the enlarged front view of the main part of FIG. 1, the feed water heater 1 in the feed water heater room 4 is
Is suspended in a vertical position.

Among the installation jigs of the feed water heater 1, the lower end of the feed water heater 1 is supported on the floor 7 of the feed water heater, and as a moving jig for moving the feed water heater 1 in the horizontal direction. Is composed of an air caster 27 provided with guide rollers 26 on both sides and capable of freely moving on the floor 7 of the feed water heater, and a guide rail 28 for guiding the horizontal movement of the air caster 27 (claim). Item 6).

The air caster 27 receives a supply of high-pressure air (not shown) and blows out the high-pressure air to the floor 7 of the feed water heater, so that the air caster 27 floats up due to the reaction force and is heated together with the feed water heater 1 mounted. It is movable on the floor 7 of the cabinet. The guide rollers 26 provided on both sides of the air caster 27 are supported so as to be slidable in the vertical direction according to the height of the guide rails 28 as indicated by arrows 29.

The guide roller 26 is combined with a guide rail 28 previously set on the feed water heater room floor 7 and guides the movement of the air caster 27 along the guide rail 28. The moving direction of 27 is regulated by guide rail 28.

Next, the operation of the above configuration will be described. As shown in FIG. 5 (a), the feed water heater 1 with the moving cart 21 removed from the equipment loading / unloading port 10 of the generator room floor 6.
Is suspended vertically by the overhead crane 8 through the hanging jig 18 in the direction of the arrow 24, and the lower end thereof is placed on the floor 7 of the feed water heater.
Is mounted on the air caster 27.

The guide rail 28 is moved in the direction of the arrow 14 with respect to the air caster 27, and its tip is combined with the guide roller 26 of the air caster 27 as shown in FIG. At this time, the guide roller 26 moves freely in the direction of the arrow 29 according to the height of the guide rail 28 as shown in FIG. Further guide rails 28
Is installed in a direction to guide the feed water heater 1 to a predetermined installation position.

While the air caster 27 is floating, it is moved along the guide rail 28 in the direction of arrow 25,
In response to this, when the overhead crane 8 is suspended in the direction of arrow 24, the feed water heater 1 gradually inclines from the vertical posture to the horizontal posture, and as shown in FIG. Another air caster 27a is arranged on the side opposite to 27 and mounted on the two air casters 27, 27a.

The feed water heater 1 mounted on the air casters 27, 27a is moved by pulling in the direction of arrow 25 by a winch or the like (not shown) after removing the hanging jig 18 (claim 7).

Since the air casters 27 and 27a float together with the mounted feed water heater 1 from the feed water heater room floor 7 by injection of high-pressure air, the friction resistance between the air casters 27 and 27a and the feed water heater room floor 7 is small. The large and heavy feed water heater 1 can be moved lightly and efficiently to a predetermined installation position with a small propulsion without being affected by some unevenness on the upper surface of the feed water heater room floor 7.

Thus, the axial length L of the feed water heater 1
At the equipment entrance 10 having a narrower opening, the hook H rises from the floor 7 of the feed heater of the overhead crane 8.
However, even when the feed water heater 1 is shorter than the axial length L, the feed water heater 1 can be passed through the feed water heater 1 without any trouble and can be installed in the feed water heater room 4.

According to the third embodiment, claims 8 to 10
In this regard, since this is a modification of the hanging jig, description of the same components, operations, and effects as those of the first and second embodiments will be omitted, and different portions will be described. As shown in a partially cut-away side view of FIG. 7, for feeding the feed water heater 1, a hanging jig 18 is attached to one of the hanging seats 17 provided on the side of the feed water heater 1, and the other is provided. Attach the trunnion 16 to the suspension seat 17.

The hanging jig 18 is connected to the overhead crane 8 via a hanging rope 15, and the trunnion 16 is connected to a chain block 30 and a hanging rope 15a which can be adjusted in length. Then, it is suspended by the same overhead crane 8 as the suspension jig 18. In the feed water heater 1, a moving carriage 21 is mounted as a moving jig on an end opposite to the hanging jig 18, or an air caster 27 and a guide rail 28 as a moving jig are provided. (Claims 8 and 9).

Next, the operation of the above configuration will be described. In the generator room 5 in the turbine building 3, for example, the feed water heater 1 from which the moving cart 21 has been removed is connected to the suspension jig 18.
And the chain block 30 having a shortened length is lifted in a horizontal posture by the same overhead crane 8.

The feed water heater 1 in the horizontal posture is moved by the overhead crane 8 in the direction of arrow 14 onto the equipment entrance 10 opened in the generator room floor 6, and once moved to the equipment entrance 10.
After stopping in front of the vehicle, the chain block 30 is extended long, and the trunnion 16 side is lowered into the equipment entrance 10.

As described above, the chain block 30 is continued.
When the length of the feedwater heater 1 is gradually increased, the feedwater heater 1 is gradually inclined, but by moving the overhead crane 8 slightly in the direction of the arrow 25 in response to this, the feedwater heater 1 It is suspended in a vertical position via a suspension jig 18. The feed water heater 1 in the vertical position is an overhead crane 8
Is suspended in the direction of the arrow 24, and before the lower end of the feed water heater 1 reaches the floor 7 of the feed water heater chamber, the carriage 21 is attached to the lower end.

Further, after reaching the feed water heater room floor 7 on which the moving cart 21 is installed, the lower portion of the moving cart 21 or the feed water heater 1 is pointed by an arrow (not shown) by a winch or the like.
Tow in 25 directions. At this time, move the overhead crane 8
When the feed water heater 1 is suspended in the direction of 24, the tip of the feed water heater 1 is moved on the feed water heater room floor 7 by the wheels of the moving cart 21, and is gradually inclined to a horizontal posture (claim 10).

Accordingly, the axial length L of the feed water heater 1
At the equipment entrance 10 having a narrower opening, even if the hook rise H from the generator room floor 6 of the overhead crane 8 is shorter than the axial length L of the feed water heater 1, the feed water heater 1 is not obstructed. And feed water heater room 4
Can be installed.

The fourth embodiment is directed to claim 11 and the third embodiment.
Since this embodiment is a modification, the description of the same components, operations and effects as those of the above-described first to third embodiments will be omitted, and different portions will be described.

As shown in the partially cutaway side view of FIG.
To feed the feed water heater 1, a hanging jig 18 is attached to one of the hanging seats 17 provided on the side of the feed water heater 1, and a trunnion 16 is attached to the other hanging seat 17. Further, the hanging jig 18 is connected to the overhead crane 8 via the hanging rope 15.
In addition, the trunnion 16 is configured to be suspended by an auxiliary crane 31 such as a jib crane via another suspension rope 15a.

Next, the operation of the above configuration will be described. In the generator room 5, the feed water heater 1 from which the moving carriage 21 has been removed in advance is suspended in a horizontal posture by the overhead crane 8 and the auxiliary crane 31. This horizontal position feed water heater 1
By moving both the overhead crane 8 and the auxiliary crane 31 in the direction of arrow 14 onto the equipment carrying-in / out port 10 opened in the generator room floor 6, and then suspending the auxiliary crane 31 in the direction of arrow 24, The trunnion 16 can be lowered to the equipment entrance 10.

As described above, when only the auxiliary crane 31 is hung, the feed water heater 1 is gradually inclined. In response to this, the overhead crane 8 is slightly moved in the direction of the arrow 25 to thereby provide the feed water heater. 1 is inside the equipment entrance 10
It is suspended in a vertical position by the overhead crane 8 via the suspension jig 18.

The feed water heater 1 in the vertical posture further suspends the overhead crane 8 and the auxiliary crane 31 in the direction of the arrow 24 at the same time, and the lower end of the feed water heater 1 is placed on the floor 7 of the feed water heater.
Before reaching, the moving carriage 21 (not shown) is attached to the lower end of the feed water heater 1.

The feed water heater 1 is lowered again by the overhead crane 8 and the auxiliary crane 31, and after the moving trolley 21 reaches the feed water heater room floor 7, the hanging rope 15 of the auxiliary crane 31 is removed, and the hanging jig is removed. It is supported only by the overhead crane 8 via 18, and the lower part of the moving carriage 21 or the feed water heater 1 is towed laterally by a winch or the like (not shown). With this lateral towing, the overhead crane 8 is suspended in the direction of the arrow 24, so that the attitude of the feed water heater 1 is tilted, and the movable carriage 21 moves on the feed water heater room floor 7 and moves horizontally. Can be in a posture.

[0063]

As described above, according to the present invention, existing facilities such as a loading / unloading entrance having a narrow opening compared to the length of a feed water heater and an overhead crane which cannot obtain a sufficient lifting height from the height of a building or the like are used. As a result, it is possible to carry out the work of feeding and removing the feed water heater without temporarily removing a part of the building structure, so that the construction period can be shortened without lowering the improves.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view of an installation jig and an installation method according to a first embodiment of the present invention.

FIG. 2 is an installation jig according to the first embodiment of the present invention,
(A) is a plan view, (b) is a side view.

3 (a) and 3 (b) are plan views and FIG. 3 (c) is a side view of a modified installation jig of the first embodiment according to the present invention.

FIG. 4 is a partially cut-away side view of the installation method according to the first embodiment of the present invention.

FIG. 5 is a moving jig according to a second embodiment of the present invention,
(A) is a side view of a moving jig, (b) is a principal part enlarged front view.

FIG. 6 shows a moving jig according to a second embodiment of the present invention,
(A) is a front view of the moving jig, (b) is a side view of the installation method.

FIG. 7 is a partially cut-away side view of an installation jig and an installation method according to a third embodiment of the present invention.

FIG. 8 is a partially cut-away side view of an installation jig and an installation method according to a fourth embodiment of the present invention.

9A and 9B are a vertical cross-sectional view of a main part and a horizontal cross-sectional view of a main part of a turbine building of a power plant.

FIG. 10 is a longitudinal sectional view of a main part of a turbine building of a power plant.

FIG. 11 is a vertical sectional view of a main part showing a method for installing a feedwater heater in a conventional turbine building.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Feed water heater, 2 ... Turbine generator, 3 ... Turbine building, 4 ... Feed water heater room, 6 ... Generator room floor, 6a ... Part of generator room floor, 7 ... Feed water heater room floor, 7a ... part of the floor of the feed water heater room, 8 ... overhead crane, 9 ... building ceiling, 10 ... equipment entrance, 11 ... building wall, 11a ... part of the building wall, 12 ... dedicated trolley, 13, 14, 24, 25,29… arrow (moving direction), 15,15
a ... hanging rope, 16 ... trunnion, 17 ... hanging seat, 18 ... hanging jig, 19 ... hanging ring, 20 ... wheel, 21 ... moving trolley, 22 ...
Suspension seat for jig, 23 ... holding seat, 26 ... guide roller, 27, 27
a: air caster, 28: guide rail, 30: chain block, 31: auxiliary crane, H: hook rising from the generator room floor, L: axial length of feed water heater.

Claims (11)

[Claims] 1. A suspending jig rotatably mounted on one side in an axial direction by a suspending seat provided on a side portion of a feed water heater, and an end of the feed water heater on an opposite side of the attached suspending jig in the axial direction. A feed jig for mounting the feed water heater, comprising a moving jig to be attached to the section. 2. The installation jig for a feed water heater according to claim 1, wherein one of the suspension seats in the axial direction provided on a side portion of the feed water heater is a suspension seat for a hanging jig. 3. The feed water heater installation according to claim 1, wherein the transfer jig is a transfer cart having an upper portion detachable from an end of the feed water heater and having wheels provided at a lower portion. jig. 4. The installation jig for a feed water heater according to claim 1, wherein the moving jig has a wheel rotatably provided on a holding seat formed at an end of the feed water heater. 5. A suspension jig is rotatably mounted on one side in the axial direction by a suspension seat provided on a side of the feed water heater, and a moving carriage is mounted on an end of the feed water heater on the opposite side in the axial direction. Wear it,
A method for installing a feed water heater, wherein the attitude of the feed water heater is changed via the hanging jig to lift and lower the feed water heater, and the water heater is moved laterally on the floor surface by a moving jig. 6. An air caster having a feed water heater mounted on an upper part thereof and capable of freely moving on a floor surface, and a moving jig provided on a floor surface for guiding the moving direction of the air caster. The installation jig of the feed water heater according to claim 1, comprising a guide rail. 7. A suspension jig is rotatably mounted on one of the suspension seats provided on the side of the feed water heater in the axial direction to lift and lower the feed water heater, and to connect the feed water heater to the air caster on the floor surface. A method for installing a feedwater heater, characterized in that the feedwater heater is mounted laterally and moved laterally along a guide rail. 8. A suspension jig rotatably mounted on one side in the axial direction with a suspension seat provided on a side portion of the feed water heater, and a trunnion mounted on a suspension seat opposite to the suspension jig in the axial direction. An installation jig for a feed water heater, comprising: a hanger attached to the trunnion, the length of which can be adjusted; and a moving jig attached to an end of the feed water heater on the trunnion side. 9. The feed water heater according to claim 3, wherein the moving jig is the moving cart or an air caster and a guide rail. Installation jig. 10. A hanging jig rotatably mounted on one side in an axial direction by a hanging seat provided on a side portion of a feed water heater, and a length mounted on a trunnion axially opposite to the hanging jig. Adjustable hanging tool, mounting a moving cart at the end of the feed water heater on the trunnion side, raising and lowering the feed water heater by raising and lowering the hanging jig and the adjustable length hanging tool together Installing the feed water heater by changing the posture of the feed water heater by adjusting the length of the length-adjustable hanging device, and moving the feed water heater laterally on the floor with the moving jig. Construction method. 11. The method for installing a feed water heater according to claim 10, wherein the suspending tool whose length is adjustable is a lifting tool different from the lifting tool of the suspending jig.