JP3274238B2 - Construction method of thermal power plant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a thermal power plant, which makes it possible to significantly reduce the construction period by efficiently constructing a thermal power plant.

[0002]

2. Description of the Related Art In general, in the construction of a thermal power plant, first, civil works and construction work for constructing a plant building are performed, and then a turbine, a generator, a main transformer, a starting transformer, an in-house transformer, The installation work of the boiler, large-sized auxiliary equipment related to fuel and air, large-sized auxiliary equipment related to water supply, and the like constituting the auxiliary equipment of the boiler is performed. After this equipment installation work, the turbine / generator control room and central control room that house each control device and computer, switchboards for high-voltage to low-voltage switchboards, switchgear, etc., and seawater, oil, coal, etc. Installation work of various devices is performed for each block of the local control room for controlling the flow rate and the like. After that, the adjustment test and test run of each device are performed and completed, but during the construction period, the construction, installation, adjustment test, trial run and process are completed,
It takes about 3.5 years to start operation of a thermal power plant.

Further, when the installation of each device is completed, a unit adjustment test of the device is started. At this time, a central control room, a control room for installing each control device and a computer, and a local control room are completed. Each control unit must be installed and cable laying must be completed.

[0004]

However, this cable laying operation requires a lot of labor and time by many workers and the like, and this cable laying operation requires completion of a cable tray for an electric path such as a cable route. After the installation of the equipment is completed, the control unit can be started in the central control room and local control room only after the installation is completed, so the process is squeezed due to design specification changes and operational specification changes, etc. In order to prevent delays in the adjustment process of each control device during the combination test, many workers are forced to work hard, such as staying up all night, and this is one of the worst operations.

Recently, in order to improve the reliability of the power generation plant, the system configuration of plant equipment and devices has become a distributed hierarchical system configuration using an optical LAN such as an optical cable, and the control devices are distributed and arranged. At the same time, cable laying work has become more complicated due to differences in specifications at the time of construction of power cables, control cables, optical cables, and the like.

[0006] For this reason, a significant delay occurs in the cable laying work, which is wrinkled in an adjustment test of a single device or in a comprehensive combination test process in which the main engine and auxiliary machines are combined. As the construction process is required to be further shortened, the burden on testers and coordinators who are involved in plant adjustment tests increases, and the pressure on the process affects the quality and reliability of the plant system. Has occurred.

Further, the plant adjustment test must be carried out by bringing various tools to the site. This adjustment test process also requires a lot of manpower and a lot of time, delays the completion, and causes the operation of the thermal power plant to operate. There were issues affecting the start.

[0008] The present invention provides a thermal power plant capable of greatly reducing the time and labor required for the cable laying operation step and the adjustment test step as compared with the related art, and thereby greatly shortening the construction work period. The purpose is to provide a construction method.

[0009]

In order to achieve this object, the present invention provides a thermal power plant which is divided into a plurality of plant constituent units, and has a double structure of a ceiling or a floor and the outside of which is covered with a frame material. Forming a building block, and installing each of the divided plant constituent units on the floor of the plurality of building blocks, while installing an optical signal processing unit below the ceiling or floor of the building block, The optical signal processing unit installed under the ceiling or floor and the plant constituent unit installed under the floor of the building block are connected in advance by an optical signal cable, and the building blocks are arranged and connected in up, down, left, and right directions. In addition, the signal line connection between each building block is an optical signal The Buru performed by connecting to the optical signal processing unit, characterized by construction of a thermal power plant.

[0010]

[0011]

[0012]

[0013]

According to the structure of the present invention, cables and the like are built in a building block at a factory and laid in advance, and when the building block is carried on site and assembled,
Since the optical signal cable has only to be connected to the optical signal processing unit, the cable connecting operation is simplified, and the time and labor required for the cable connecting operation are greatly reduced.

[0014]

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a building block diagram of a thermal power plant according to one embodiment of the present invention. In the present embodiment, each function divided by a main engine, an auxiliary machine, and a control device in the thermal power plant is standardized. BTG having the functions of a control unit block, a switchgear unit, a local unit block, and a central operation room, each of which is divided into a plurality of building blocks each of which is a unit of each device or device, and which installs a control device. Of the control room block, etc.
An I / O input / output device is connected to an optical cable such as an optical LAN to form a network, and a BTG control room block and the PI / O input / output device are connected to each other by an optical LAN or a network. Are connected to a network to enable comprehensive monitoring and control by a power generation integrated control block.

That is, in the building block shown in FIG. 1, the thermal power plant according to the present embodiment has a turbine generator block (including a transformer block) 1, a boiler control unit block 3, a turbine Generator control unit block 4, condenser, water supply unit block 5, switchgear unit 6, PI / O input / output unit 14, local equipment block 16 for seawater, oil, water, etc., boiler block 2, BTG control room block 8 , Power generation integrated control block 9, locally installed seawater,
It is composed of a local device block 16 that handles oil, water and the like.

The boiler block 2 includes a boiler 17, its peripheral devices, and a PI / O input / output device 15. The block 1 for accommodating the main unit of the turbine generator and the boiler block 2 are standardized and connected to a unitized piping unit 7.

The PI / O input / output device 14 and the PI / O input / output device 15 of the boiler block 2 are connected by an optical cable via an optical LAN 12.

The local equipment block 16 is a block of each control device for controlling seawater, water, oil, coal and the like required for a thermal power plant, and a PI / O input / output device 13 is attached thereto. However, the local device block 16 is an expression including devices related to fuel such as oil, coal, etc., such as seawater or water treatment, which is configured as an operation terminal.

The PI / O input / output device 13 of the local equipment block 16 is connected by an optical LAN 12 to a PI / O input / output device 14 installed integrally with the turbine generator block 1.

Also, the PI /
The O input / output device 13 is also connected to the PI / O input / output device 15 of the boiler block 2 via the optical LAN 12.

A control signal and a monitoring signal of the turbine generator block 1 are transmitted by an optical LAN or a network 10 to a BTG control room block 8 having a computer general monitoring panel, a console, and the like, which are configured as separate blocks. Further, a power generation comprehensive control station block 9 for comprehensively monitoring and controlling the thermal power plants distributed in several places and the BTG control room block 8 are connected by a network 11 to form a system so as to perform comprehensive power generation control. I have.

FIG. 2 is a block diagram of an optical LAN system of each control device constituted by building a thermal power plant into a building block.

The boiler control unit block 3 is connected to an optical LAN 12 constituted by an optical cable and a control optical LAN 12A, and the turbine generator control unit block 4 includes a turbine control unit 4A, a generator control unit 4B, a PI / O input / output. The control optical LAN 12A and the optical LAN 12 are connected to each other.

An optical LAN 12 and a control optical LAN 12A are connected to each switchboard opening / closing device of the switchgear unit 6.

The local equipment block 16 is connected to the PI / O input / output device 13 by a cable 23, and the PI / O input / output device 13 converts an electric signal into an optical signal, and the optical LAN 12 is constituted by an optical cable. The power is transmitted to the switch gear unit 6, the turbine, the generator control device block 4, and the PI / O input / output device 14A of the boiler control device block 3.

The boiler 17 and the turbine 18 which constitute the main engine of the thermal power plant are unitized to form a piping unit 7
And the condenser 19, the water supply device 20, and the generator 21 also have a unitized connection configuration. Further generator 2
1 is connected to the transformer 22 by a unitized insulated cable 24. Signals from the main units and the auxiliary units having this unit configuration are transmitted to a PI / O input / output device 14 disposed in the vicinity via a cable 23, and the PI / O input / output device 14 outputs an electric signal from the cable 23. Is converted to an optical signal and transmitted to the switch gear unit 6, the turbine generator control device block 4, and the PI / O device 14A of the boiler control device block 3 via the optical LAN 12 constituted by an optical cable.

The BTG control room block 8 comprises a central computer 8A, a general monitoring panel 8B, and a console 8C. Switch gear unit 6, turbine generator control unit block 4, boiler control unit block 3 described above
Are output to the star coupler 12B via the control optical LAN 12A, and are collected by the BTG control room block 8.
Collected by the central computer 8A.

The power generation control station block 9 comprises a general computer 9A and a general monitoring panel 9B. The BT
An antenna 25 is installed in the G control room block 8 and the power generation control station block 9, and the control and monitoring signals of the thermal power plant by the central computer 8A are transmitted through a network to the integrated computer 9 of the power generation control station block 9.
A is given and received.

Further, another power plant BT installed at another position
A control monitoring signal is also transmitted and received from the G control room 8L to the general computer 9A via the network.

FIG. 3 is a longitudinal sectional view of a block diagram of a turbine generator control device as an example of a building block according to the present invention.

The turbine generator controller block 4 comprises a turbine generator controller unit 41 and a turbine generator controller block terminal unit 42 and is connected to the PI / O input / output device 14A.

The turbine generator control device unit 41 includes:
Basically, the turbine controller 4A, the generator controller 4
B, lighting 30, ventilation duct 31, hanging bracket 32, suspended ceiling 32A, and floor plate 29. These storage devices and devices are basically incorporated into the turbine and generator control unit block 4.

The turbine generator control block terminal unit 42 is composed of the optical signal processing unit 27 and the optical cable duct 28, and the PI / O input / output unit 14
It is configured in combination with A1.

This PI / O input / output device unit 14A1
Can also be configured as shown in FIG.
Are unitized so that the configuration shown in FIG.

The turbine generator control device unit 41 and the turbine generator control device block terminal unit 42 of the turbine generator control device block 4 are both manufactured in a factory in advance. An optical signal processing unit 27 and an optical cable duct 28 for storing an optical cable input / output from the optical signal processing unit are previously installed in the factory, and a standardized input / output signal extraction terminal of the optical cable terminal block 4A1 of the turbine controller 4A is provided. Optical cable duct 28
Connected by

Similarly, in the generator control device 4B, the optical signal processing unit 27 is connected to a standardized input / output signal extraction terminal of the optical cable terminal block 4B1 by an optical cable duct 28.

FIG. 4 shows a switch gear unit block 60.
FIG. 1 shows a vertical cross-sectional view, in which a cable is laid from the ceiling and a cable is laid from under the floor below the panel.

The switchgear unit block 60 comprises a switchgear unit 6 and a switchgear block terminal unit 61 arranged at a position below the floor below the panel.
It is connected to the PI / O input / output device 131.

The switchgear unit 6 is composed of a switchgear 6A, a lighting 30, a ventilation duct 31, a floor panel 29, a suspended ceiling 32A, and the like. The optical cable terminal block 6A1 installed on the switchgear 6A is laid from the ceiling and under the floor. Optical cable duct 28 is connected.

The switch gear unit block terminal unit 61 arranged at the lower part of the panel is
7, an optical signal cable and an optical cable duct 28.

The switch gear unit block terminal unit 61 is configured in combination with a PI / O input / output device unit 131 composed of the PI / O input / output device 13 and the optical LAN 12.

The switchgear unit 6 and the switchgear unit block terminal unit 61 of the switchgear unit block 60 are both manufactured in advance at a factory, and each switchgear 6A and the optical signal processing unit 27 of the switchgear unit block terminal unit 61 Are previously connected in the factory by an optical cable duct 28 for storing an optical cable.

This PI / O input / output device unit 131
Is unitized so that it can be configured as shown in FIG. 4 or as shown in FIG.

FIG. 5 is a diagram for explaining an adjustment test of the turbine generator control device block 4 in a factory.
Although the details of the turbine generator control device block 4 have been described with reference to FIG. 3, the turbine generator control device block 4 includes a turbine generator control device unit 41 and a turbine generator control device block terminal unit 42. .

The turbine generator control device unit 41 includes:
A turbine controller 4A and a generator controller 4B are provided. The turbine generator controller block terminal unit 42 includes an optical signal processing unit 27 having an optical-electrical converter 36, an optical cable duct 28, an optical LAN 12, or an optical signal cable. I have.

The turbine generator control unit block 4 assembled and manufactured in the factory as described above is installed in the factory test area 35 in the factory, and is shipped after performing a comprehensive combination test.

The factory test area 35 is provided with a turbine control device simulator test device 33 for simulating the operation of a turbine of a thermal power plant, and a generator control device simulator test device 34 for simulating the operation of a generator and the like. .

[0049] Turbine control device simulator test device 3
Reference numeral 3 denotes an electric / optical converter 37, and a generator controller simulator tester 34 includes an electric / optical converter 37. The simulator signal from each of the simulators 33 and 34 is converted into an optical signal processing unit by the optical LAN 12 or an optical signal cable. 27, the turbine controller 4A, the generator controller 4
B, while transmitting signals from the turbine control device 4A and the generator control device 4B to the respective simulator test devices 3A and 3B.
A simulation test is carried out in the factory test area 35 by transmitting the data to the factory test area 35.

The turbine controller simulator tester 33 and the generator controller simulator tester 34 can execute a simulation test at a remote location by using the optical LAN 12.

By providing the optical signal processing unit 27 in the turbine generator control unit block 4 in advance in the above-described manner, a comprehensive combination test can be easily performed in a factory test area using a standardized simulator test apparatus.

FIG. 6 shows a state where the turbine generator control unit 4 is completed as a building block. The frame member 38 shown in FIG. 6 is used as a strength member when the turbine generator control device block 4 as a building block is carried in and installed.

The turbine generator control unit 41 has various sizes, large and small, but weighs more than 100 tons, so it is necessary to prepare a sufficient frame member 38 to support them. The frame member 38 also functions as a member for suspending a building block when assembling, and also as a member when other units are combined.

When fixing each block by providing a bolt hole (not shown) for fixing in the frame member 38, the height and the lateral connection in the case of forming a building block are adjusted by adjusting the bolt hole.

As described above, the turbine generator control device block 4 is packaged by the frame member 38, and the packages of the respective building blocks are suspended at a time. Each block is connected by the connection, and there is also an effect as an earthquake-resistant structure.

FIG. 7 is a detailed view of a BTG control room block which is one of the building blocks of the present invention. The BTG control room block 8 formed as a building block includes a general monitoring panel 40 provided with a large CRT 39 and an operation console 8C provided with a two-stage CRT screen 41.

An optical LAN or a network is connected, and a control signal, monitoring and alarm signal of the thermal power plant are transmitted to the BTG control room block 8, and the BTG control room block 8 controls the entire thermal power plant. Also, the control signal and the monitoring alarm signal from the BTG control room blocks 8 of several thermal power plants can be centralized, and the overall control and monitoring can be performed by the network for the power generation integrated control block.

[0058]

As described above, according to the present invention, cables and the like are installed in a building block at a factory and laid in advance, and when the building block is carried on site and assembled, the optical signal cable is connected to the optical signal processing unit. Since the connection is made, the cable connection work during the construction of the thermal power plant is simplified, and the time and labor required for the cable connection work are greatly reduced.

[0059]

[0060]

[0061]

[0062]

[0063]

[Brief description of the drawings]

FIG. 1 is a building block diagram of a thermal power plant showing one embodiment of the present invention.

FIG. 2 is a configuration diagram of an optical LAN system of each control device in a building block of a thermal power plant showing an embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a turbine generator control device block as an example of a building block of a thermal power plant showing one embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a switchgear unit block of a thermal power plant showing one embodiment of the present invention.

FIG. 5 is an explanatory diagram of a combination test in a factory of a turbine generator control device block of a thermal power plant showing one embodiment of the present invention.

FIG. 6 is a frame configuration diagram of a building block of a thermal power plant showing one embodiment of the present invention.

FIG. 7 is a detailed view of a BTG control room block of a building block of a thermal power plant showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turbine generator block 2 Boiler block 3 Boiler control unit block 4 Turbine generator control unit block 5 Condenser water supply unit block 6 Switchgear unit 7 Piping unit 8 BTG control room block 9 Power generation general control block 10 Optical LAN or network Reference Signs List 12 optical LAN 12A control optical LAN 13 PI / O input / output device 14 PI / O input / output device 15 PI / O input / output device 16 local device block 41 turbine generator control device unit 42 turbine generator control device block terminal unit 60 Switchgear unit Block terminal unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04H 5/02 E04G 21/14 F01K 13/00 F01K 23/10 G05B 15/02 G05B 23/02 G09B 9 / 00

Claims (2)

(57) [Claims] 1. A thermal power plant is divided into a plurality of plant constituent units, and a plurality of building blocks having a ceiling or a floor having a double structure and an outside covered with a frame material are formed, and on the floor of the plurality of building blocks. Installing each of the divided plant constituent units, installing an optical signal processing unit under the ceiling or under the floor of the building block, and installing the optical signal processing unit under the ceiling or under the floor of the building block; and An optical signal cable is connected in advance to the plant constituent units installed on the floor of the block, and the building blocks are arranged and connected in up, down, left, and right directions, and a signal line between the building blocks is connected by an optical signal cable. Is connected to the optical signal processing unit. More go, construction method of a thermal power plant, characterized in that the construction of a thermal power plant. 2. The method for constructing a thermal power plant according to claim 1, wherein the frame material of the building block has adjustable bolt holes, and bolts are connected after installing each building block.