KR100899983B1 - Aiding apparatus for disassembling and assembling process of generator in repair works of francis hydraulic turbine - Google Patents

Abstract

Disclosed is a generator disassembly and assembly process support apparatus for the maintenance of the Francis aberration generator. The apparatus of the present invention is a portable terminal carried by each worker and a built-in electronic tag reader, a large display installed in the generator room, a camera for photographing the situation in the generator room, generator disassembly and maintenance for the Francis aberration generator The database storing the electronic work manual data of the assembly process and the electronic work manual of the database are sequentially displayed on the large display in the generator disassembly and assembly process mode, and the disassembly and assembly work in the generator room is photographed on the large display. In response to the recognition of the electronic identification tag of the part currently being disassembled or assembled in communication with the mobile terminals, the relevant disassembly or assembly manual contents are displayed on a large display, and the measured values measured at the time of disassembly and assembly are displayed. Maintenance database with It includes a control unit for executing a generator disassembly and assembly process support program to build and store as. Therefore, when disassembling and assembling the generator, the manual contents of the corresponding parts are automatically displayed to improve workability and reduce the occurrence of errors or safety accidents.

Description

Aiding Apparatus for Disassembling and Assembling Process of Generator in Repair Works of Francis Hydraulic Turbine}

The present invention relates to a generator disassembly and assembly process support apparatus for the maintenance of the Francis aberration generator, and more particularly, by attaching an electronic identification tag to each component of the generator and automatically recognizing it through the terminal associated disassembly and assembly The city's work manual relates to supporting devices that are automatically displayed.

In general, the Francis aberration generator is a generator that generates electricity and a hydraulic turbine, a rotating machine that converts the potential energy of water into mechanical energy, is installed vertically on the same vertical line, and the generator generates electricity by receiving the power of the aberration. ．

In order to maintain the normal performance of the power plant and its accessories, and to prevent various accidents in advance, the aberration generators should be inspected every five or ten years to ensure safe and efficient operation. Disassembly inspection and repair of aberration generator is generally performed by disassembling generator and aberration, conducting maintenance and disassembly inspection of disassembled equipment, and assembling repaired aberration and generator.

The overhaul and repair of the aberration generator is carried out on a regular basis. If this is carried out at a different time for each device, several power failures are required, resulting in power generation loss due to a decrease in the operation rate of the plant. It is very effective and important to carry out the entire facility internally for a certain period of time. Therefore, in order to safely and efficiently finish such overhaul inspection in a shorter period, the crane and the overhead crane for disassembling the It is necessary to thoroughly inspect the same equipments and to make a careful plan and thoroughly carry out preliminary preparations so that the overhaul and maintenance process can be carried out without any problems.

In order to more easily and efficiently disassemble Francis aberration generator, preparation process to inspect, operate and separate various equipments and devices, generator disassembly process to disassemble generator and to repair and repair various parts, and to sequentially disassemble aberration. Aberration disassembly process to repair and repair disassembled parts, aberration assembly process to assemble parts of disassembled aberration in reverse order, and generator assembly to assemble various parts of disassembled and repaired generator in order The inspection and test process of the final inspection of the process and the assembled aberration generator and testing of various tests required for operation are carried out sequentially.

However, in the related art, the repair work of the aberration generator was carried out only by the mastered function as described above. Therefore, the repair period could be estimated by disassembling and assembling without setting the order according to the repair. There was a problem of countless hours and manpower.

Therefore, the maintenance manual was written as a booklet, and the workers performed the work in the order of disassembly while examining the booklet or the blueprint in the field. Time and effort were required.

Accordingly, an object of the present invention is to repair the Francis aberration generator that can improve the workability by automatically disassembling and assembling the contents of the relevant parts by using the electronic tag and mobile reader to solve the problems of the prior art. To provide a disassembly and assembly process support apparatus for the.

It is another object of the present invention to provide a disassembly and assembly process support apparatus for the maintenance of the Francis aberration generator which can systematically manage parts and maintenance by automatically disassembling and assembling the generator with image data and electronic file data. There is.

The present invention for achieving the above object is to carry out the maintenance of the portable terminal portable by each operator and the built-in electronic tag reader, a large display installed in the generator room, a camera for photographing the situation in the generator room, Francis aberration generator The electronic work manual of the generator disassembly and assembly process for the generator is stored, and the electronic work manual of the database is sequentially displayed on the large display in the generator disassembly and assembly process mode. Display the disassembly or assembly manual on the large display in response to the recognition of the electronic identification tag of the part currently disassembled or assembled by communicating with the mobile terminals and displaying the measured values measured during disassembly and assembly. With the electronic identification code of the It includes a control unit that executes a generator disassembly and assembly process support program that is built as a manual database and stored in the database. Therefore, when disassembling and assembling the generator, the manual contents of the corresponding parts are automatically displayed to improve workability and reduce the occurrence of errors or safety accidents.

Supporting apparatus according to an embodiment of the present invention can automatically display the relevant manual content of the corresponding parts when disassembling and assembling the generator can improve workability and reduce the occurrence of errors or safety accidents.

Hereinafter, the supporting apparatus according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments, and those skilled in the art will appreciate The present invention may be embodied in various other forms without departing from the spirit of the invention.

1 is a schematic view showing the structure of the Francis aberration power plant that is overhauled and repaired according to the present invention.

Referring to the drawings, the hydroelectric power station stores the water by the dam 10 and flows the stored water into the hydraulic pipe line 14 through the intake port 12 installed in the middle of the dam 10 and receives the introduced water aberration 16 ) Rotates the aberration 16 by high pressure. The aberration 16, i.e., the turbine, is rotated by the impact force of water, and the rotational force rotates the generator in the generator chamber 18 to generate electricity. The generated electric energy is converted into high voltage through the substation 20 in which a transformer or the like is installed, and then transmitted to each receiving place by a transmission line. The intake port 12 is installed with a water intake gate which is moved by a hoist or crane and a first detector 22 for detecting a closed state of the intake gate is installed. Water used for power generation is discharged downstream of the dam through the water discharge port (26) via the draft tube (24). The waterproof opening 26 is installed with a waterproofing gate sluice which is moved by a crane or a crane, and a second sensor 28 for detecting a closed state of the waterproofing gate sluice is installed. During development, both the intake gate and the seal gate are open.

2 is a view showing in detail the internal structure of the generator chamber of FIG.

Referring to FIG. 2, the generator chamber 18 is provided with a generator 100 and an aberration 200 up and down in the center, and a crane 310 is installed on the ceiling of the generator 100. An accessory chamber of the generator chamber 18 is provided with a transformer transformer room, a cable chamber, a switchgear chamber, a bus bar, and the like. A large display 430 and a camera 440 are installed inside the generator chamber 18, a drain pump 320 is installed below the transformer transformer chamber, and the drain pump 320 is disposed in the draft pipe 24. Water is pumped out of the pump to drain the filled water inside the draft tube. The water level detector 340 is installed in the drain pit 330 to detect the water level.

Figure 3 shows a block diagram of a disassembly and assembly process support apparatus for the repair of the Francis aberration generator according to the present invention.

Referring to the drawings, the support apparatus 400 includes a control unit 410, a communication module 420, a large LCD display 430, a camera 440, a manager computer 450, a database 460, a switchboard 470, The repair apparatus includes a power supply 480 and the support apparatus 400 wirelessly communicates with the portable terminals 500 carried by workers.

The controller 410 may be configured as a server system of an operation panel or a power plant control center, or may be implemented as a separate server. The communication module 420 is composed of commercially available two-way wireless communication modules such as CDMA, WiBro, and wireless LAN to communicate with the terminal 500 through a base station. The large LCD display is a 50-inch or larger wall-mounted type that displays work progress or camera images taken at work sites and work manuals. The camera 440 photographs the work preparation situation in the generator room at least one or more places and provides the captured image to the controller 410, and can be controlled such as tilt, left and right rotation, and zoom by the control of the controller 410. Do. The camera 440 is preferably configured to be attached to the ceiling crane 310 to move together when the crane moves. The manager computer 450 may be connected to the control unit 410 to issue a command to the control unit 410, or the manager may monitor work progress reports or situations of workers. The manager receives the short message through the manager computer 450, composes the command in a short message, and sends the short message. The manager writes and registers the identification number of the portable terminal 500 of the workers, the worker's name, work in charge and the like. The command is transmitted to the corresponding terminal by the registered identification number of the terminal. The database 460 includes a generator distribution and assembly process electronic manual database 462, a disassembly and assembly video database 464, and a part history management database 466 related to the maintenance work of the Francis aberration generator. The switchboard 470 is switched so that the power generation operation is stopped in the maintenance work mode, so that the power supply of the system is supplied from a separate maintenance power source 480. In other words, the power supply to the generator and the aberration is cut off and only the parts necessary for the maintenance work are supplied.

The terminal 500 includes a CDMA terminal, that is, a general worker CDMA mobile phone, a dedicated CDMA terminal, a WiBro terminal, a WLAN terminal, or the like. That is, the terminal 500 leads the component related data to the electronic identification tag 610 attached to the generator component 600 through the embedded reader 510. The read data is created as a short message and wirelessly sent to the controller 410.

4 is a cross-sectional view showing the structure of the Francis aberration generator.

Referring to FIG. 4, the generator 100 includes a disassembling process as follows and an assembly process in the reverse order, depending on the type of component.

1. PMG (110) decomposition withdrawal process

2. Dust collector ring cover 112 disassembly process

3. Top cover 114 disassembly process

4. Stub shaft 118 drawing out process

5. Upper bracket 122 disassembly and withdrawal process

6. Disassembly and withdrawal process of upper coil cover 124

7. Rotor 120 disassembly and withdrawal process

8. Lower oil guide 140 disassembly withdrawal process

9. Generator guide bearing (162) drawing out process

10. Generator shaft 160 pull out settlement process

11. Traverse bearing extraction process

12. Lower bracket (150) disassembly withdrawal settlement process

13. Lower air deflector 154 disassembly and withdrawal process

Looking at the disassembly and assembly process of the present invention in detail.

First, the manager sets the system to the generator disassembly and assembly mode of the maintenance work through the control center, and registers the mobile phone numbers of the workers, the worker's name, the responsible task, and the like through the manager computer 450.

Subsequently, when the work order command is issued, the generator disassembly manual data is displayed on the display 430. Workers first carry out the dismantling process of the permanent magnet alternator (PMG) 110 for generator frequency detection according to the operation manual displayed on the screen. Eight bolts provided with the signal lamp 102 are disassembled to remove the cover 104, and the lead wire and the PMG lead wire of the signal lamp 102 are separated. If there is no existing electronic identification tag on each separated part, new electronic identification tag is attached and the operator leads the electronic identification tag attached to the part with his terminal and displays each part code displayed on the screen together with the read information. Create and send a report short message. The controller 410 registers the electronic identification code included in the short message by matching the corresponding part code. Thereafter, in response to the electronic identification code, related data is stored as data of the corresponding component. The insulation state of the permanent magnet alternator 110 is measured by 5OOV, I000 mega insulation resistor. The measured data is prepared as a short message and transmitted to the controller 410. The controller 410 records the data of the corresponding part in response to the electronic identification code included in the short message. Then, using the crane 310, the permanent magnet alternator 110 consisting of the rotor 106 and the stator 108 is lifted up and placed in an empty space inside the generator chamber 18 according to the instructions of the operation manual shown on the display. Let's do it.

The operator attaches the electronic identification tag to the corresponding part to disassemble the next part, that is, the dust collector ring cover 112, leads the electronic identification code from the attached tag, and transmits the read electronic identification code and the part code in a short message. The controller 410 displays the manual contents corresponding to the disassembling process of the dust collector ring cover. Workers disassemble, pack, dry and store 36 generator carbon brushes in a safe place, disassemble 8 bolts of DC bus bar and dust collector ring joints, support jack of limit switch and pilot bus according to the displayed manual. Remove the electric wire and disassemble the 24 fixing bolts of the dust collector ring cover 112. Particularly, in order to prevent damage to the surface of the dust collector ring, the crane 310 is used with the protection of the gasket sheet, and the crane 310 is slowly lifted and drawn out, and then the manual is sequentially indicated to be settled. Is displayed on the display.

Then, after marking the top cover joint part to disassemble the top cover 114, disassemble the 308 top cover fixing bolts and the 16 top cover support fixing bolts, and use the crane 310 to cover the 8 pieces of top cover. Take out and place (114), and then remove the eight top cover supports (116).

Next, disassemble the PMG ball joint coupling to remove the stub shaft 118 and the bolt for connecting the bus bar, remove the insulating tape on the bus bar joint, remove the fixing bolt, and connect the brush support copper plate and the dust collector ring connection. Remove the bolts, heat the bus bar connecting the stub shaft 118 and the rotor 120 with a gas torch to remove it, but check the level of the stub shaft 118 before removing it, and then remove the bus bar support. Disassemble the stub shaft 118 and the main shaft coupling bolt of the generator, and slowly pull out the stub shaft 118 using a crane and settle it, but be careful not to damage the surface of the dust collector ring when changing the position of the wire rope. ．

After disassembling the stub shaft, the upper bracket 122 is disassembled and drawn out. Measure the level of the stub shaft before disassembly, disassemble the foundation bolt and dowel pin that fasten the upper bracket 122 to the stator frame, and draw out the upper bracket 122 including the upper coil cover 124 to identify Attach the tag and place it in place. After this, the generator is guided to install a safety rope and a safety sign on the generator side.

Subsequently, before disassembling the rotor 120, the air gap between the rotor 120 and the stator 130 and the gap between the rotor 120 and the brake are measured, and the welding bolt of the rotor fixing bolt stopper is dismantled to dismantle the fixing bolt. Separate the filter using a hydraulic oil pump and disassemble it while checking the pressure. In order to assemble the device that can take out the rotor 120 and clean it by applying grease to the base surface to prevent rust from occurring, and to quickly support the rotor 120 when it is settled. Guide the rim support and the jacks to be arranged at regular intervals. Since the gap between the rotor 120 and the stator 130 is about 14 mm, in order to prevent the rotor pole 126, the stator core, the coil 132, and the like from being damaged when the rotor 120 is withdrawn, Arrange at 1 ~ 2m intervals and prepare enough wooden boards (16, 20) to draw the rotor 120 up and down while moving the wooden board up and down to protect the rotor 120 and stator 130 from contact. While drawing out, each time the rotor 120 is drawn out sequentially (1-2 times), the crane 310 is stopped and the drawing is performed while checking and adjusting the level repeatedly, and the rotor 120 is completely taken out. After that, the support for the base is installed while the fiber sheet (FIBER SHEET) is developed on the rotor mounting base. To disassemble the hook of the crane 310, apply grease to prevent rusting on the contact surface projection for storage until disassembly and assembly, and to prevent foreign matter from penetrating into the rotor rim or moisture. Cover with small window, and after the rotor 120 is drawn out, a check ladder is installed to check the lower bracket 150, and the stator 130 can prevent foreign matter from penetrating or generating moisture. Cover it with small window to do it.

The lower oil guide disassembly and withdrawal process for disassembling and withdrawing the lower oil guide 140 is carried out as follows. The oil filled in the thrust bearing tank 142 is transferred to the auxiliary tank and the hose provided at the rear end of the tank drain valve. After connecting the pump, the pump is discharged and the oil remaining in the oil pipe of the thrust bearing 144 is opened. The drain valve installed in the pipeline is opened and the pipe flange is removed and drained. Remove the inspection manholes and thrust bearing RTDs and thermometers and store them in a small package. Remove the generator conduits and wirings, cut and remove the conduit supports, and filter the oil drained using an oil filter. The trust runner 146 checks the level before disassembly and draws it together when pulling out the generator shaft 150, and then keeps it wrapped in small windows to prevent foreign matter from penetrating.

The thrust oil cover 148 measures the labyrinth gap before disassembling it, removes the lower guide bearing RTD and thermometer, and packs it in small pieces, removes the air supply and discharge pipes, and unscrews the seizure cover fixing bolts. After disassembly and install the thrust oil cover (148).

The withdrawal process of the generator guide bearing 152 is dismantled and dismantled by fixing bolts securing the cover of the generator guide bearing 152, and the guide bearing gap between the guide bearing adjustment bolt and the bearing is removed before disassembling the generator guide bearing 152. Measured with a gap gauge, and after disassembling the adjusting bolt locking nut supporting the generator guide bearing, the separate eye bolt is fastened to the upper part of each of the sixteen generator guide bearings (152) and taken out.

After pulling out the generator guide bearing 152, the main coupling bolt 154 must be removed and the process for removing it is carried out in the following order.

Inside the turbine pit 350, the scaffold is securely installed at the appropriate height so that the main coupling bolt 152 can be easily disassembled and the work can be carried out easily. Place the plywood on it and fix it so that it does not come off.

Disassemble and remove the fixing bolt of the lower air current transformer on the shaft 150 side. Lower oil tube） Fasten the eye bolts to the fixing bolt holes to install two chain blocks on both sides, support the needle between the coupling and the cover, and fix the bolts on the upper cover using the pre-installed chain block. After disassembling, lift it up, remove the bolt fastened inside the cover, split it out, measure the length of the coupling fixing bolt, and then disassemble the lower cover fixing bolt and put it on the support neck.

To support the impact taper and the runner when the moving and down of the shaft 154 and the bottom ring and wear ring, the support taper carter is made separately and supports the folded part of the coupling bolt and the shasha. ．

Install the tool to separate the coupling bolt and nut, and measure the disassembly pressure by using hydraulic pump and disassemble 12 coupling bolts / nuts in order in diagonal direction considering the influence by main shaft and other devices. After the eye bolts are fastened to each coupling bolt, the coupling bolts (12 pieces) are drawn out, and the remaining four coupling bolts that are diagonal to each other are the impact preventing bolts of the runner blades, so that the load of the runner acts. In order to reduce the load on the coupling bolt and to prevent shaking or deformation of the main shaft, fasten four spare bolts with four square plates to the holes 4, 5, 12 and 13 together. Install the jack ram in the center of the plate and fix it by applying pressure (600kg / m) .Be careful not to move the jack pump hose, etc. until the work is completed, disassemble the remaining four coupling bolts / nuts and remove the chain block. Pull out and remove the coupling bolts. Remove and remove the coupling bolt washers (8 pieces).

Since the jaw of the main shaft, which is the connection portion between the turbine shaft 206 and the generator shaft 160, is about 12 mm, the oil of the jack pump that is fastened is slowly discharged so that the gap between the runner and the turbine shaft 206 is 13 to 14 mm. Remove the spare bolts (4 pieces), plates and jack rams, measure the length of the bolts after disassembling the coupling bolts, disassemble the coupling bolts, and dismantle and dismantle the components of the generator side. When done, remove the scaffold that was installed in the turbine feet.

The generator shaft withdrawal settling step for extracting and placing the generator shaft 160 is performed as follows.

Disassemble the fixing bolts of the thrust bearing 144 and the lower oil tube base, evenly distribute the support wood on the top of the flange of the generator shaft 160 evenly so that they do not fall, and remove the RTD and thermometer of the thrust bearing 144. Keep it in small windows. The lifting device is fastened to the upper portion of the generator shaft 160 and hooked to the crane 310 using a wire rope. When pulling out the generator shaft 160, the gap between the outer diameter of the lower oil tube base and the outer diameter of the shaft is 20 mm and is drawn out together with the various components installed in the thrust bearing tank 142. Draw out, carry out to the designated place after withdrawal, place the various parts provided in the interior of the thrust bearing tank 142 on the top of the prepared pedestal, but place four bolts in the flange hole so as not to move after placing the generator shaft 160 It is fastened at equal intervals and fastened, and the generator shaft 160 is completely settled, and then rust-treated with oil and protected by wrapping with wood.

The thrust bearing withdrawal settling process for withdrawing and placing the thrust bearing 144 is

Disassemble and dismantle the bearing stopper key bolts, and take them out with a crane, secure them in small packing, taking care not to damage the surfaces of the thrust bearing pads (145).

The lower bracket disassembly take-out process for discharging the lower bracket 150 is performed as follows. Check the level before disassembly. Completely disconnect the oil cooler pipe 152 and other wiring through the oil cooler. Disassemble the lower air deflector 154 and the support bolt fixed to the lower bracket 150, and remove the foundation bolt securing the bracket frame, and the fixing bolt jointing the middle part of the dowel pin and the lower coil cover. 150 is slowly withdrawn to the crane 310, but is withdrawn while maintaining the gap between the left and right properly so as not to damage the stator 130 of the generator (100).

After applying the anti-rust grease to the lower side of the lower bracket 150, gradually settle the support neck evenly, and check the dimension of the liner under the lower bracket 150 and mark it so that the position is not changed. Do this and keep it.

The lower air deflector 154 disassembly drawing process of disassembling and extracting the lower air deflector 154 disassembles bolts (three places) and fixing bolts of the lower air deflector joint portion, and prevents warping of the lower air deflector 154. Hook the wire to the crane (310) while taking out one by one while maintaining the horizontal.

By doing this, the disassembly process of the generator is completed. In the present invention, when the electronic identification tag attached to each component is read, the contents of the electronic manual of the parts corresponding to the large screen are automatically displayed. They can predict the next work order, improve work efficiency and work safely.

The components and auxiliary equipment of the generator disassembled by the generator disassembly process are performed by performing the disassembly device inspection process, and then performing the generator assembly process.

The controller 410 sets the operation mode to the assembly process mode. The initial screen of the assembly process is displayed on the screen, and then the assembly process manual is automatically displayed on the screen in response to the lead of the electronic identification tag.

In the assembly process, since all parts of the electronic identification tag are attached to all parts in the disassembly process, when the electronic identification tag is read through the terminal 500 and the contents are sent to the controller as a short message, the screen contents are automatically converted and displayed. .

First, on the screen, the coupling bolt and the lower air deflector 154 and the oil pipe 152 are installed at a convenient height inside the turbine pit 350, and the scaffolding and pipe scaffolding are set at an appropriate height, and the upper part is installed. Install scaffolding by placing scaffolding and pipe scaffolding on top of it, install the scaffolding on the top, fix the plywood on the upper part and fix it so that it does not come off. Display the screen contents to be indicated.

In order to assemble the lower air deflector 154, one side of the lower air deflector 154 is horizontally hung on the crane 310 by using a wire rope, and then the crane 310 is raised to slowly settle, and then the fixing bolt is fastened. . Then secure the bolts and joint bolts in place by placing the second and third in the same way. The lower bracket 150 is assembled as follows. Evenly distribute the wire rope and hung the lower bracket 150 to the crane to maintain the horizontal state, and then raise the crane 310, then lower the lower bracket 150 gradually, and settled in accordance with the lower bracket 150, Molytech is applied and fixed to the dowel pin, and then the 12 fixing bolts are tightened while checking the horizontal state of the bracket 150, and the level is measured after assembling. Fixing bolts at the middle joint of the lower coil cover 156 The lower air deflector 154 and the support to the lower bracket 150 by fastening the bolts, the oil pipeline flange is fastened through the oil cooler, and the lower bracket 150 is cleaned. do. The thrust bearing 144 assembles the 12 bearing pads 145 using a crane, checks the position and quantity of the coil springs, and fastens the bearing pad stoppers.

The assembly of the generator shaft 160 including the trust runner 146 is carried out as follows. After lifting the crane 310 horizontally by lifting the lifting device horizontally with the crane 310 using a wire rope, the generator shaft 160 is gradually moved, and when the generator shaft 160 is settled, the outer diameter of the lower oil well tube and Since the gap with the outer diameter of the shaft is 20mm and various parts are assembled together in the thrust bearing tank 142, pay special attention and keep it horizontally, gradually lowering it to fit the coupling bolt hole, and in the upper inner part of the thrust shaft. Apply the Molicoat. Fasten the thrust bearing 144 and the fixing bolt of the lower oil well tube base, clean the thrust bearing pad 145, assemble after oiling, and remove the lifting device.

Straighten the bent part of the thrust bearing RTD, and then secure the RTD head to the bearing position so as not to bend the RTD pipe, and use the bond on the flange of the penetrating part of the lower bracket 150 to prevent oil leakage. Also, connect the thermometer of the thrust bearing 144 and various wirings.

The main coupling bolt 164 is assembled as follows. Tighten the four spare bolts for assembly together with the four-plates on N04, 5, 12, and 13, and install a manual jack ram in the center of the plate to raise the jack up to 600Kg / km3, and close the flange face. Install a pair of chain blocks to the left and right by fastening the eye bolts to the fixing bolt holes of the oil well tube. Place the main coupling bolt washers (8 pieces) on the flange and lift the coupling bolts (164) with the chain block. Insert the coupling bolt (164) and the nut assembly tool, measure the tightening pressure (300Kg / km3) using a hydraulic pump, and take the coupling in the diagonal order in consideration of the influence on the main shaft and other equipment. After tightening bolt nuts (12), remove 4 spare bolts, plate and jack ram. Tighten the nut with the other four coupling bolts, remove the hydraulic pump and the assembly tool, and measure the length of the coupling bolt 164 after assembly. After tightening the joint bolt of the coupling bolt upper cover divided into two sides, lift it up with a chain block and fasten the fixing bolt, and then tighten the joint bolt of the coupling bolt lower cover divided into two sides and then lift it into the chain block. Put up and fasten the fixing bolt, remove the chain block and assemble the lower air deflector 154 on the shaft side, and then remove the scaffold of the turbine pit 350. The lower oil guide 140 cleans the thrust bearing tank 142 and inserts the lower oil guide 140. The assembly of the lower guide bearing 162 is to assemble 16 bearings by fastening the eye bolts on the upper part of the bearing 162, and to fasten 16 adjusting bolts so that the gap is 24 ~ 27m / m, and between the bearing and the adjusting bolt Measure the gap of the gap with a gap gauge and tighten the 16 guide bearing covers.

The thrust oil cover 148 checks the direction of the air pipe flange of the thrust oil cover 148, then assembles the oil cover, pipes the air supply and ventilation pipe, and measures the inner gap after assembling the lower guide bearing RTD and the thermometer. do.

The trust runner 146 measures the level after assembly.

For the thrust bearing tank oil and generator room piping, fasten the manhole for checking the bearing oil tank, and refill the thrust bearing tank (connect the auxiliary tank and hose prepared at the rear end of the valve installed on the generator room outer wall, and operate the pump). Accurately check whether there is leakage after finite), weld the support of the generator room conduit, and connect the wires and wiring.

The assembly of the generator rotor 120 is performed as follows.

After inserting the crane 310 hook into the rota lifting device, fasten the joint bolts, raise the crane 310 in the state in which the rota 120 is fastened to the crane, and measure the level when the overhead crane is loaded. After leveling and slowly moving down, it is lowered and the small window installed to prevent the inflow of dust and foreign substances from the stator 130 is removed. Rotor 120 is inserted enough to avoid contact between the rotor pole 126 and the stator core, the coil 132, the wooden board between the rotor 120 and the stator 130, and shakes up, down, left and right Protects the pole, core and coil when placing it, and maintains the clearance between the rotor spokes and the generator shaft flange at about IOmm so that the bolt 310 is correctly aligned while the crane 310 is paused, and then the crane 310 is completely lowered. And remove the lifting device. Tighten the fixing bolt of the rotor 120 using a hydraulic pump in the order of diagonal direction while measuring the tightening pressure (300Kg / km3), and weld the stopper to the fixing bolt of the rotor 120 to prevent loosening. The air gap of the rotor 120 and the stator 130 and the gap between the rotor 120 and the brake are measured for 6 to 8 points. Assembling the upper bracket 122, evenly distribute the wire rope to the crane 310 to hang the upper bracket 122 to raise the crane 310 while maintaining the horizontal, and then gradually lower the upper bracket 122, The upper bracket 122 is settled in accordance with the pin hole, and the 16 foundation bolts are fastened while keeping the bracket 122 horizontally after applying and fixing the Molly coat on the eight dowel pins. Tighten the fixing bolts to complete the assembly and measure the level.

The assembly of the stub shaft 118 and the excitation power supply bus bar is carried out as follows.

Tighten the two eye bolts on the shaft flange and wire rope to the crane 310 to secure the stub shaft 118 to the bolt, then fasten the fixing bolt of the stub shaft 118, and measure the level after assembly. ． Tighten the eight PMG ball joint coupling fixing bolts and assemble them, and fix them by fastening the bus bar support and the bus bar fixing bolts.The soldering place on the bus bars should be tightened a little loosely and fully tightened after soldering. Retighten the bolts after the solder has solidified, tape the bus bamicar tape in about four layers, and tape it into about eight layers with asbestos tape, then apply varnish. The assembly of the top cover 114 is moved to the crane 310 to assemble in turn, fastening the fixing bolts, and assembles the support 116 of the top cover 114.

Assembly of the dust collector ring cover 112 is performed as follows.

Using the crane 310 to slowly down to the bolt hole, protected with a gasket sheet to prevent damage to the surface of the dust collector ring, and then slowly down the crane 310 is settled, the four of the dust collector ring cover 112 Tighten the fixing bolt. Connect the wires for the pilot brush, fix the jack up limit switch support, fasten the D.C bus bar and eight dust collector ring joint bolts, and assemble the carbon brush of the generator. 310 to assemble the PMG 110 in accordance with the bolt hole to fasten the PMG fixing bolt, to measure the insulation resistance with PMG 500/1000 mega, to connect the lead wire and PMG lead wire of the signal lamp 102, Put up the cover 104 of the signal lamp 102 and tighten the eight fixing bolts.

According to the present invention, when the operator leads the electronic identification tag of the part to his terminal in the field and transmits it to the control unit in a short message, the corresponding manual screen is displayed so that the user can work while watching the complicated disassembly and assembly process on the screen. As even an inexperienced worker can easily work, the work efficiency is improved and the measured values are automatically built into the database, and all the work is recorded as a video so that the work progress can be reviewed after the work. It can be used as. In addition, the parts history of all parts is built into the database, so it is possible to manage parts replacement time at a glance.

Although described with reference to the embodiments above, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. You will understand.

1 is a schematic view showing the structure of the Francis aberration power plant that is overhauled and repaired according to the present invention.

2 is a view showing in detail the internal structure of the generator chamber of FIG.

Figure 3 shows a block diagram of a generator disassembly and assembly process support apparatus for the repair of the Francis aberration generator according to the present invention.

Figure 4 shows a cross-sectional view of the assembled state of the Francis aberration generator according to the present invention.

Claims (1)

An electronic identification tag attached to the Francis aberration generator component; A portable terminal for carrying by each worker and having an electronic tag reader for reading the electronic tag, and transmitting the information and the measurement data of the read electronic tag in a short message; A communication module for communicating with the portable terminal; Large display installed in the generator room; A camera for photographing the situation inside the generator; An administrator computer for registering the identification number of the portable terminal; A database in which electronic work manual data of a generator disassembly and assembly process for the maintenance of the Francis aberration generator is stored and the measured value character data is stored corresponding to the electronic identification codes corresponding to the respective parts of the Francis aberration generator; And The short message is communicated with the mobile terminal registered through the manager computer through the communication module, and the electronic work manual of the database is sequentially displayed on the large display in the disassembly and assembly order in the generator disassembly and assembly process mode. Photographing the disassembly and assembly of the generator room with the camera and displaying it on the large display, and communicating with the mobile terminal in a short message manner, in response to recognition of an electronic identification tag of a part that is currently disassembled or assembled. Alternatively, the assembly disassembly and assembly process displays the contents of the assembly manual on the large display, constructs a maintenance work database together with the electronic identification codes of the parts and stores the measured values and disassembly and assembly videos measured during disassembly and assembly. G Generator disassembly and assembly process support device for the repair of Francis aberration generator in that it includes a control unit for executing a program as claimed.

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