JP4101411B2 - Power plant installation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for installing a power generation facility in which installation work is improved.
[0002]
[Prior art]
For example, a condenser, which is one of the main equipment incorporated in a power generation facility, is a connection piece connected to an exhaust port of a steam turbine, an upper body on which a feed water heater is mounted, and a lower part that houses a condensation pipe And the turbine exhaust exhausted from the exhaust port of the steam turbine through the connection piece, upper fuselage is condensed in the condenser tube of the lower fuselage to condensate, and the condensate is a feed water heater, deaerator, It has a role of returning to the steam generator as feed water through a feed water pump or the like.
[0003]
The condenser 1 having such a function shown in FIG. 10 is accommodated in the turbine building 2 and installed on the bottom side of the steam turbine 4 of the turbine base 5 that supports the generator 3 and the steam turbine 4. At this time, the turbine shaft CL is carried in through an opening in a direction orthogonal to the turbine shaft CL. Reference numeral 6 denotes a carry-in entrance for carrying in other large equipment.
[0004]
Further, when the condenser 1 is housed in the turbine building 2 and installed on the bottom side of the steam turbine 4 supported by the turbine base 5, as shown in FIG. 11, a connection piece that is connected to the steam turbine 4 in advance. 7. After carrying the upper body 8 and temporarily suspending the connecting piece 7 and the upper body 8 using a chain block or the like provided on the turbine base 5, the lower body 9 is directed in the direction of the arrow AR. Then, it is moved laterally and moved to the position indicated by the final broken line, and then installed on the condenser base 10. Note that the connection piece 7 and the upper body 8 that are temporarily suspended by a chain block or the like are lifted to a position where the lower body 9 can freely move. Reference numeral 11 denotes a pit for piping or the like.
[0005]
In this way, the power generation facility in which the lower body 9 of the condenser 1 is installed on the condenser base 10 has been transported to the turbine building 2 by a transport vehicle 12 such as a dolly or transporter as shown in FIG. After the steam turbine 4 and the generator 3 are lifted up to the turbine base 5 by the jack-up device 13, they are moved toward the arrow AR by the heavy load driving device 15 connected to the support portion 14 of the jack-up device 13. It is set at the position indicated by the broken line. The important object driving device 15 is configured by combining a towing unit, a rail, and the like. Reference numeral 16 denotes an opening for carrying a turbine part such as a nozzle diaphragm, and the position of the steam turbine 4 or the generator 3 indicated by a broken line along the direction of the arrow AR by the crane 17 for the turbine part carried from the opening 16. It is conveyed to.
[0006]
On the other hand, when the steam turbine 4 moved to the position indicated by the broken line by the driving force of the heavy load driving device 15 is connected to the condenser 1 installed in the turbine base 5, as shown in FIG. After centering and adjusting each of the turbine casing 20 of the turbine 4 and the upper body 8 of the condenser 1, the upper connection piece 18 among the upper connection piece 18 and the lower connection piece 19 which are divided into two connection pieces 7. Is fixed to the turbine casing 20 by welding, the lower connection piece 19 is fixed to the upper body 8 by welding, and the middle part thereof is connected by the expansion joint 21.
[0007]
By the way, in recent power generation plants, many so-called single-shaft type combined cycle power plants in which a gas turbine and a steam turbine with high plant thermal efficiency are coupled by a rotating shaft are used for actual operation.
[0008]
As shown in FIG. 14, the combined cycle power plant is configured such that the generator 3, the steam turbine 4, and the gas turbine 22 transported by the transport vehicle 12 are sequentially installed when installed on the turbine base 5 accommodated in the turbine building 2. The jack up device 13 is lifted up to the turbine base 5 and then moved along the direction of the arrow AR by the heavy article moving device 15 connected to the support 14 of the jack up device 13 and set on the turbine base 5. is doing.
[0009]
Further, as shown in FIG. 15, the generator 3 directly connected to the gas turbine 22 in the power generation facility of the outdoor device has travel rails 24, 24 installed at both ends of the base 23, and uses the travel rails 24, 24. Then, the power lifting device 25 carries in the installation work by bringing it to a preset equipment installation position (on-base position).
[0010]
[Problems to be solved by the invention]
The conventional power generation equipment installation method shown in FIGS. 10 to 15 includes several problems, and an improvement measure has been demanded.
[0011]
First, when the turbine casing 20 of the steam turbine 4 is connected to the upper body 8 of the condenser 1 shown in FIG. 13, the centering operation of the turbine casing 20 and the upper body 8, the upper connection piece 18 to the turbine casing 20 is performed. The welding work and the welding work of the lower connecting piece 19 to the upper body 8 have to be performed in a narrow place, and the worker is forced to put a lot of labor. Further, even if the turbine casing 20 and the upper body 8 are centered in advance, the upper and lower connecting pieces 18 and 19 are welded, so that the above-described centering shifts due to the influence of welding heat. It had to be re-centered and a lot of work time was spent.
[0012]
Further, in the case of a single-shaft type combined cycle power plant in which the gas turbine 22, the steam turbine 4, and the generator 3 shown in FIG. Although the turbine 22 and the steam turbine 4 are lifted to the turbine base 5 and are transported to the installation position by the heavy load moving device 15, they are often used for preparation of the jack up device 13 and the heavy load moving device 15 and the position adjustment. There were inconveniences and problems such as spending a lot of time.
[0013]
Further, in the case of the generator 3 directly connected to the gas turbine 22 installed outdoors shown in FIG. 15, the power lifting device 25 can shorten the installation adjustment time when retracting to the installation position (on-base position). Although advantageous, there is a problem that a lot of cost is spent to ensure the earth resistance of the traveling rails 24, 24 on which the power lifting device 25 is mounted.
[0014]
The present invention has been made based on such circumstances, and an object of the present invention is to provide a power plant installation method for improving the installation work to simplify the carrying-in work and shorten the work period.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the power generation equipment installation method according to the present invention is characterized in that when a condenser is connected to a steam turbine, the turbine casing of the steam turbine and the condenser are connected. A connection piece provided between the upper body and the upper body is divided into an upper connection piece and a lower connection piece, and the upper connection piece and the turbine casing are connected after the lower connection piece and the upper body of the divided connection piece are connected. Are connected with an adjustment plate thinner than the upper connection piece, and the upper connection piece and the lower connection piece are connected by an expansion joint.
[0016]
Installation method of power generation equipment according to the present invention, in order to achieve the above object, as described in claim 2, adjustment plate for connecting the turbine casing and the upper connection piece to each other, welded to the turbine casing After the connection, the upper connection piece is welded.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a power generation facility installation method according to the present invention will be described with reference to the drawings and the reference numerals attached to the drawings.
[0022]
FIG. 1 is a conceptual diagram used for explaining a first embodiment of a power generation equipment installation method according to the present invention. In addition, this embodiment demonstrates as an example the connection construction method at the time of connecting the connection piece of a condenser to the turbine casing of a steam turbine.
[0023]
In the present embodiment, the turbine casing 27 of the steam turbine 26, the adjusting plate 28, and the connection piece 29 are divided into two, the upper connection piece 30, the lower connection piece 31, and the upper body 33 of the condenser 32. ing.
[0024]
Further, the present embodiment includes a gauge block 35 that supports the upper connection piece 30 and the lower connection piece 31 when the upper connection piece 30 and the lower connection piece 31 are connected.
[0025]
In the steam turbine / condenser connection structure having such a configuration, when the turbine casing 27 is connected to the upper body 33, first, the turbine casing 27 and the upper body 33 are centered and finely adjusted.
[0026]
Moreover, after welding the connection part of the lower fuselage of the condenser 32 and the upper fuselage 33, the lower connection piece 31 and the upper connection piece 30 that have been temporarily suspended are lowered, and the lower connection piece 31 and the upper fuselage 33 are welded and connected. To do.
[0027]
Next, the connection gap of the expansion joint 21 is adjusted, and the upper connection piece 30 is fixed by the cage block 35. In this state, the adjustment plate 28 is welded and fixed to the turbine casing 27 at one end thereof. Finally, the other end is welded and fixed to the upper connection piece 30 after confirming the centering state of the condenser 32.
[0028]
Thus, in this embodiment, when connecting the condenser 32 to the steam turbine 26, each of the turbine casing and the upper body 33 is centered and adjusted, and after adjusting the centering, one end of the adjusting plate 28 is connected to the turbine casing. Since the other end is welded to the upper connection piece 30 after being welded to 27, the deviation of the centering of the turbine casing 27 due to thermal strain during welding can be kept low.
[0029]
Therefore, according to the present embodiment, the turbine casing 27 and the upper connection piece 30 are connected by the adjustment plate 28, the thermal strain at the time of welding of the upper connection piece 30 is kept low, and the adjustment plate 28 and the upper connection piece Since the centering adjustment can be performed before the final welding with 30, when the lower connection piece 31 is welded to the upper body 33 as in the conventional enforcement example, the position adjustment is performed by fusing the lower connection piece 31 from the middle. Therefore, the work can be reduced and the construction period can be shortened.
[0030]
2 and 3 are conceptual diagrams used for explaining a second embodiment of the power plant installation method according to the present invention. In addition, this embodiment demonstrates and demonstrates the installation construction method of a condenser and a steam turbine. FIG. 2 is a conceptual diagram used for explaining the condenser installation method, and FIG. 3 is a conceptual diagram used for explaining the steam turbine installation method.
[0031]
In this embodiment, as shown in FIGS. 2 and 3, when the steam turbine 26 and the condenser 32 are conveyed into the turbine building 36, an automatic lift device 37 that conveys the steam turbine 26 and the condenser 32 is used as a turbine. It is provided on the entrance side of the building 36.
[0032]
As shown in FIG. 4, the automatic lift device 37 is a combination of a jack frame portion 38 and a jack transporting portion 39. For example, the steam turbine 26 that has been transported to the transport vehicle 40 is converted into a turbine foundation by the jack frame portion 38. When the jack 41 is jacked up to the base 41, pulled out from the jack transporting section 39 set in advance and then lifted by the jack transporting section 39, the steam turbine travels in the direction of the arrow AR and reaches a predetermined position. 26 is jacked down and installed.
[0033]
The steam turbine 26 and the condenser 32 are carried into the turbine building 36 in which the automatic lift device 37 having such a configuration is installed on the inlet side. Among these, the condenser 32 is first carried in.
[0034]
As shown in FIG. 2, the condenser 32 is carried into the jack frame portion 38 of the automatic lift device 37 by the transport vehicle 40 and then delivered to the heavy load drive device 42 directed in the direction of the arrow AR ₁ from here. It is set so as not to interfere with the upper connection piece 30, the lower connection piece 31, and the upper body 33 that are moved along the arrow AR ₂ by the driving force of the heavy load driving device 42 and temporarily suspended on the turbine base 41. The
[0035]
When the condenser 32 is carried in and set, the steam turbine 26 carried into the jack frame 38 of the automatic lift device 37 by the transport vehicle 40 is moved along the arrow AR ₁ by the driving force of the jack frame 38 along the arrow AR _1. to be jacked up, pulled out the jack carriage 39 which is set in advance from here, after further lifting by the jack carriage 39 moves toward the arrow AR _2, reaches the position of the upper connecting piece 30 of the condenser 32 Jack down and set to the opening of the upper connection piece. The generator is also transported to the turbine base 41 using the automatic lift device 37 in the same manner as the steam turbine 26, but the description is omitted here.
[0036]
Conventionally, unless all the connecting work of the condenser and the upper / lower connecting pieces is completed, the steam turbine cannot be set because the upper body is temporarily suspended. However, in this embodiment, by providing a gap for the adjusting plate 28, the steam turbine can be set even when the upper body 33 is temporarily suspended.
[0037]
Further, in the present embodiment, when the condenser 32 and the steam turbine 26 are installed on the turbine base 41, they are transported by the driving force of the heavy load driving device 42 to the upper body 33 that has been suspended beforehand on the turbine base 41. After the condenser 32 is set, the steam turbine 26 is set at the position of the upper connection piece 30 of the condenser 32 using the lift force and driving force of the automatic lift device 37. Then, it is possible to continue the carrying-in work of the steam turbine or the like, shorten the work period as a whole, and reduce the labor of the operator under the automatic carrying-in.
[0038]
FIGS. 5-8 is the conceptual diagram used in order to demonstrate 3rd Embodiment of the installation method of the power generation equipment which concerns on this invention. In addition, this embodiment demonstrates a combined cycle power plant as an example. FIG. 5 is a conceptual diagram used for explaining one step in the generator installation method as one component of the combined cycle power plant. FIG. 6 is one configuration of the combined cycle power plant. FIG. 7 is a conceptual diagram used to explain another step of the generator installation method as an element, and FIG. 7 is a diagram of the generator installation method as a component of a combined cycle power plant. FIG. 8 is a conceptual diagram used for explaining another step, and FIG. 8 is for explaining that a generator, a steam turbine, and a gas turbine as components of a combined cycle power plant are installed on a turbine base. It is the conceptual diagram used for.
[0039]
In this embodiment, as shown in FIGS. 5 to 8, an automatic lift device 37 in which a jack frame portion 38 and a jack transporting portion 39 are combined is installed outdoors on the entrance side of the turbine building 36.
[0040]
Further, in the present embodiment, as shown in FIGS. 5 to 8, a traveling rail 43 that connects the turbine base 41 installed in the turbine building 36 to the automatic lift device 37 is provided.
[0041]
In the turbine building 36 having such a configuration, the generator 44 mounted on the transport vehicle 40 is first carried into the jack frame portion 38 of the automatic lift device 37.
[0042]
Generator loaded into the jack rack構部38 44 is being jacked up towards here in the direction of arrow AR _1, for winding changing the wire in the middle jack-up, as shown in FIG. 6, the transport vehicle the temporary supporting frame 45 mounted to 40 accommodated in the jack rack構部38 is jacked up to the jack carriage 39 in the direction of arrow AR _1, then drawn into the jack carriage 39, further jack carriage 39 after lifted in and move along the traveling rail 43, as shown in FIG. 8, after reaching the set position, is a jack-down in the direction of arrow AR _2, it is installed in the turbine foundation base 41.
[0043]
The steam turbine 26 and the gas turbine 46 are also transported in substantially the same manner as described above, and are sequentially installed on the turbine base 41 as shown in FIG.
[0044]
In this way, in the present embodiment, the automatic lift device 37 is skillfully used, and the generator 44, the steam turbine 26, and the gas turbine 46 are sequentially installed on the turbine base 51. Preparation work, setup work, and setup change work can be omitted, and the construction period can be greatly shortened.
[0045]
FIG. 9 is a conceptual diagram used for explaining a fourth embodiment of the power plant installation method according to the present invention. In addition, this embodiment demonstrates as an example the foundation stand of the gas turbine and generator installed outdoors.
[0046]
In the present embodiment, a base base 47 that supports an outdoor gas turbine 46 and a generator 44 is extended, and a support portion 49 that supports the traveling rail 48 of the jack transporting portion 39 in the automatic lift device 37 is extended. Is provided.
[0047]
Thus, in this embodiment, since the support part 49 which supports the traveling rail 48 of the jack transport part 39 is provided in the part which extended the base 47 which supports the gas turbine 46 installed outdoors and the generator, automatic The ground strength necessary for the installation of the lift device 37 can be reliably ensured, and the automatic lift device 47 can be quickly installed after the concrete is placed. In this embodiment, in order to support the traveling rail 48 of the jack transporting part 39, the support part 49 is provided on the base 47, but this supporting part 49 may be used as the traveling rail of the gantry crane.
[0048]
【The invention's effect】
As described above, the power generation equipment installation method according to the present invention is constructed so as to reduce the occurrence of thermal strain when the condenser is connected to the steam turbine. Therefore, the work can be reduced.
[0049]
Moreover, the installation method of the power generation facility according to the present invention is to install the condenser and the steam turbine on the turbine base, and to transport the condenser using the lower part of the turbine base and to lift the steam turbine automatically. Since the condenser is continuously transported to the turbine base using the apparatus, the efficiency of the work can be improved.
[0050]
In addition, when installing a combined cycle power generation plant that directly connects a generator, a steam turbine, and a gas turbine on a turbine base, the power generation equipment installation method according to the present invention uses an automatic lift device to successively install each device. Since it is transported to the turbine base, the work period can be shortened in combination with the efficiency of the work.
[0051]
In addition, since the installation method of the power generation facility according to the present invention is provided with means for ensuring the earth bearing strength of the traveling rail when each equipment of the gas turbine and the generator installed outdoors is transported by an automatic lift device, The apparatus can be transported while being maintained in a stable state.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram used for explaining a first embodiment of a power generation equipment installation method according to the present invention.
FIG. 2 is a conceptual diagram used for explaining the condenser installation method as an example in the second embodiment of the power generation equipment installation method according to the present invention.
FIG. 3 is a conceptual diagram used for explaining a steam turbine installation method as an example in the second embodiment of the power generation facility installation method according to the present invention.
FIG. 4 is a conceptual diagram used to explain an automatic lift device applied to a power generation equipment installation method according to the present invention.
FIG. 5 is a conceptual diagram used for explaining one step of a generator installation method in a combined cycle power plant as an example in a third embodiment of a power generation facility installation method according to the present invention.
FIG. 6 is a conceptual diagram used for explaining another step of the generator installation method in the combined cycle power plant as an example in the third embodiment of the installation method of the power generation facility according to the present invention.
FIG. 7 is a conceptual diagram used to explain yet another step of a generator installation method in a combined cycle power plant as an example in the third embodiment of the power generation facility installation method according to the present invention. .
FIG. 8 illustrates that, in the third embodiment of the power generation equipment installation method according to the present invention, it is installed on a generator, a steam turbine, a gas turbine, and a turbine base as components of a combined cycle power plant as an example. The conceptual diagram used for.
FIG. 9 is a conceptual diagram used for explaining a fourth embodiment of the power generation equipment installation method according to the present invention.
FIG. 10 is a conceptual plan view used for explaining an arrangement example of a conventional power generation facility.
11 is a side view of FIG.
FIG. 12 is a conceptual diagram used for explaining a conventional power generation equipment installation method.
FIG. 13 is a conceptual diagram used for explaining a connection relationship between a conventional steam turbine and a condenser.
FIG. 14 is a conceptual diagram used to explain a combined cycle power plant installation method as an example of a conventional power generation facility installation method.
FIG. 15 is a conceptual diagram used for explaining a method for installing an outdoor generator as an example of a conventional method for installing a power generation facility.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Condenser 2 Turbine building 3 Generator 4 Steam turbine 5 Turbine base stand 6 Carry-in port 7 Connection piece 8 Upper fuselage 9 Lower fuselage 10 Condenser base stand 11 Pit 12 Transport vehicle 13 Jackup apparatus 14 Support part 15 Heavy article Drive device 16 Opening portion 17 Crane 18 Upper connection piece 19 Lower connection piece 20 Turbine casing 21 Expansion joint 22 Gas turbine 23 Base 24 Travel rail 25 Power lifting device 26 Steam turbine 27 Turbine casing 28 Adjustment plate 29 Connection piece 30 Upper connection piece 31 Lower connection piece 32 Condenser 33 Upper body 34 Expansion joint 35 Gauge block 36 Turbine building 37 Automatic lift device 38 Jack frame portion 39 Jack transport portion 40 Transport vehicle 41 Turbine base 42 Heavy load drive device 43 Traveling rail 44 Generator 45 Temporary Stand 46 Gaster Bin 47 Base stand 48 Traveling rail 49 Supporting part 50 Gantry crane

Claims (2)

When connecting the condenser to the steam turbine, the connection piece provided between the turbine casing of the steam turbine and the upper fuselage of the condenser is divided into an upper connection piece and a lower connection piece. After connecting the lower connecting piece and the upper body, the upper connecting piece and the turbine casing are connected with an adjustment plate having a wall thickness thinner than that of the upper connecting piece, and the upper connecting piece and An installation method for a power generation facility, wherein the lower connection piece is connected with an expansion joint. The adjustment plate for connecting the turbine casing and the upper connection piece to each other, installation method of power generation equipment according to claim 1, characterized in that the welded connection to the upper connecting piece after welding connected to the turbine casing .

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