JP4857410B2 - Conveyor equipment for water turbine equipment - Google Patents

Description

The present invention relates to a transport device for a water turbine device, and is particularly suitable for transporting a water turbine device in a water turbine device room to a carry-in / out port of the water turbine device room in a two-bed hydroelectric power generation facility.

FIG. 7 is a diagram showing a schematic configuration of a conventional two-bed hydroelectric power generation facility.
In the conventional two-bed hydroelectric power generation facility shown in FIG. 7, the generator room 50 and the water turbine equipment room 60 are installed in a vertical position, and the generator 51 is installed in the generator room 50 that is the upper space. A watermill device 61 is installed in a watermill device room 60 located below the generator room 50.
A water turbine shaft 65 that is a main shaft of the water turbine device 61 is connected to a lower portion of the generator shaft 52 that is a main shaft of the generator 51 via an intermediate shaft 70 that is detachably fixed.

The generator shaft 52 and the intermediate shaft 70 are coaxially integrated by connecting a joint surface 52 a formed at the lower portion of the generator shaft 52 and a joint surface 70 a formed at the upper portion of the intermediate shaft 70 with a bolt 71. It has become. Further, the intermediate shaft 70 and the water turbine shaft 65 are coaxially formed by connecting a joint surface 70 a formed at a lower portion of the intermediate shaft 70 and a joint surface 65 a formed at an upper portion of the water turbine shaft 65 with a bolt 71. It is integrated.
The parts of the water turbine equipment 61 are carried from the generator room 50 to the water turbine equipment room 60 on the floor 50a of the generator room 50 and the ceiling surface of the water turbine equipment room 60 at a position avoiding the generator 51 and the water turbine equipment 61. Or the carrying-in / out port 80 for carrying out is penetrated and formed.
The watermill device 61 installed in the watermill device room 60 includes, for example, a bearing oil tank 62, a guide ring 63, an upper cover 64, a watermill shaft 65, a runner (impeller, waterwheel, etc.) 66, and the like.

  By the way, in the conventional two-floor type hydroelectric power generation facility shown in FIG. 7, when performing periodic inspection and repair of the water turbine equipment 61 installed in the water turbine equipment room 60, the water turbine equipment 61 is disassembled to be disassembled. It is necessary to carry out to the outside through the carry-in / out opening 80 from the outside. At this time, in the two-floor hydroelectric power generation facility, an intermediate shaft is provided between the generator shaft 52 and the turbine shaft 65 so that only the turbine device 61 can be disassembled and carried out without disassembling the generator 51. 70 is provided, and by removing the intermediate shaft 70, the water turbine device 61 is separated from the generator 51 so that only the water turbine device 61 can be disassembled and carried out.

  Here, a conventional method for carrying out the water turbine device 61 will be described. First, the intermediate shaft 70 is separated from the water turbine shaft 65 which is the main shaft of the water turbine device 61 by removing the bolt 71 at the joint portion between the intermediate shaft 70 and the water turbine device shaft 65. To do. When the intermediate shaft 70 and the water turbine shaft 65 are separated from each other, the water turbine shaft 65 slightly falls downward, and a space of about 10 mm is formed between the intermediate shaft 70 and the water turbine shaft 65. Next, the spacer 72 having a thickness of about 30 mm inserted in the joint portion between the water turbine shaft 65 and the intermediate shaft 70 is removed to widen the axial space between the intermediate shaft 70 and the water turbine shaft 65 from 10 mm to about 40 mm.

Next, for example, a nylon sleeve (rope) 91 is wound around the intermediate shaft 70, the nylon sleeve 91 is hooked on a suspension fitting 92 attached to the ceiling surface 60 a of the water turbine equipment chamber 60, and the intermediate shaft 70 is held. The bolt 71 connecting the joining surface 70 a and the joining surface 52 a of the generator shaft 52 is removed, and the intermediate shaft 70 is separated from the generator shaft 52.
Next, the intermediate shaft 70 is lifted while being pulled by the nylon sleeve 91 and conveyed to a position directly below the carry-in / out entrance 80, and then the intermediate shaft 70 is moved from above the carry-in / out entrance 80 using a hanging hook 81 of a crane (not shown). It was lifted and carried out of the turbine equipment room 60 from the carry-in / out entrance 80.

  When transporting the water turbine equipment 61, the water turbine equipment 61 is disassembled into parts such as a bearing oil tank 62, guide ring 63, upper cover 64, water turbine shaft 65, runner 66, etc. Each part is lifted using the hanging metal fitting 92 and the rope 91 attached to the surface 60a, and is transported horizontally to the bottom of the carry-in / out entrance 80. Thereafter, in the same manner as described above, the hook 81 suspended from the crane is used from above the carry-in / out entrance 80 to carry it out of the water turbine equipment room 60.

As a prior document, as a method for disassembling the vertical shaft Francis type pump turbine in Patent Document 1, the spacer shaft connecting the main shaft of the runner and the main shaft of the generator motor is removed, and the upper cover and speed ring of the runner are removed. Remove the attached mounting bolts, install multiple guide bolts in the screw holes on the speed ring side, install multiple jackup machines in the screw holes on the upper cover side, and attach the upper cover to the guide vane shaft and guide vane bush A technique of jacking up along the guide bolt until the fitting part is released is disclosed.
JP-A-6-44286

By the way, in order to remove the intermediate shaft 70 from between the generator shaft 52 and the water turbine shaft 65, the intermediate shaft 70 is moved in the horizontal direction while being careful not to collide with or interfere with the generator shaft 52 or the water turbine shaft 65. Must be removed.
However, since the gap between the lower end portion of the generator shaft 52 and the upper end portion of the water turbine shaft 65 is as narrow as about 40 mm, the generator shaft 52 and the shaft 52 are lifted with the intermediate shaft 70 lifted by using the hanging bracket 92 on the ceiling surface 60a. The operation of controlling the turbine wheel shaft 65 so as not to hit it has to be carried out very carefully and has the drawback of requiring time.

In addition, the suspension fitting 92 on the ceiling surface 60a of the water turbine equipment room 60 cannot be always attached to the optimum position due to the positional relationship with the generator 51 and the like, and the installation position of the suspension fitting 92 is fixed. In addition, there is a limit to the efficiency of the work of transporting the parts of the disassembled water turbine equipment 61 to the bottom of the carry-in / out opening 80 by using the hanging fitting 92 and the rope 91, and there is a disadvantage that it takes time and labor.
The present invention has been made in view of the above-described points, and is suitable for lifting and transporting components of a water turbine device between the installation position of the water turbine device and a carry-in / out port in a two-bed hydroelectric power generation facility. An object of the present invention is to provide a transport device for water turbine equipment.

In order to achieve the above object, the invention according to claim 1 is directed to a generator installed in an upper space and a lower space located below the upper space and to a lower portion of the generator shaft of the generator. Two-floor hydraulic power, comprising: a water turbine device having a water turbine shaft fixed in a removable manner; and a communication port communicating with the lower space penetratingly formed at a suitable floor portion of the upper space avoiding the generator. In the power generation facility, a water turbine equipment transport device that lifts and transports parts of the water turbine equipment between an installation position of the water turbine equipment and the communication port, and two transports arranged above the lower space Rail, two trolleys attached to the two transport rails, a chain block attached to the trolley and capable of manually winding a wire, and a chain block Attached to Ya, and a jig lifted out with a grid pattern of fixing members for fixing sandwich the bonding surface of the intermediate shaft connected to the bonding surface of the water wheel shaft or the generator shaft, the water turbine shaft by the out hanging jig wherein the has a generator shaft and the installation position of the water turbine equipment lifting the intermediate shaft for connecting between the communication port and is configured to be conveyed.

According to the present invention, since the intermediate shaft fixed to the lifting jig can be transported in the horizontal direction with almost no vertical movement, even if the space for removing the intermediate shaft is as narrow as about 40 mm, for example, the intermediate shaft Can be easily transported to the bottom of the entrance / exit without contacting the generator shaft or the water turbine shaft.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of a two-bed hydroelectric power generation facility to which the present invention is applied.
The two-floor hydroelectric power generation facility shown in FIG. 1 has a turbine room 60 as a lower space installed below a generator room 50 as an upper space, and a generator 51 is installed in the generator room 50. A watermill device 61 is installed in the chamber 60. The lower part of the generator shaft 52 that is the main shaft of the generator 51 is connected to the upper portion of the water turbine shaft 65 that is the main shaft of the water turbine device 61 via an intermediate shaft 70 that is detachably fixed.

The generator shaft 52 and the intermediate shaft 70 are detachable by connecting a joint surface 52a formed at the lower portion of the generator shaft 52 and a joint surface 70a formed at the upper portion of the intermediate shaft 70 with a bolt 71. It is connected to. The intermediate shaft 70 and the water turbine shaft 65 are attached to and detached from each other by connecting a joint surface 70 a formed at the lower portion of the intermediate shaft 70 and a joint surface 65 a formed at the upper portion of the water turbine shaft 65 with the bolt 71. Connected as possible.
On the floor surface 50 a of the generator room 50, that is, on the ceiling surface of the water turbine equipment room 60, the components of the water turbine equipment 61 are transferred from the generator room 50 to the water turbine equipment room 60 at a position avoiding the generator 51 and the water turbine equipment 61. A carry-in / out port 80 for carrying in or carrying out is formed through.

The turbine equipment 61 installed in the turbine equipment chamber 60 is composed of, for example, a bearing oil tank 62, a guide ring 63, an upper cover 64, a turbine wheel shaft 65, a runner (impeller, turbine, etc.) 66, and the like.
In the two-floor hydroelectric power generation facility of the present embodiment shown in FIG. 1, the transportation rail 1 is installed on the ceiling surface 60 a of the turbine equipment room 60, and the components of the turbine equipment 61 including the intermediate shaft 70 on the transportation rail 1. A lifting jig 10 is mounted for lifting. The lifting jig 10 is characterized in that the components of the water turbine equipment 61 including the intermediate shaft 70 are lifted and transported from the installation position of the water turbine equipment 61 to below the carry-in / out entrance 80.

The route for laying the transport rail 1 can be freely set as long as it does not interfere with other equipment installed on the floor surface or ceiling surface of the watermill equipment room 60. To a position closest to the position corresponding to the lower part of the generator shaft 52.
That is, in the conventional apparatus for transporting water turbine equipment shown in FIG. 7, the intermediate shaft 70 and the water turbine equipment 61 are connected to each other using the rope 91 inserted through the suspension fitting 92 fixedly attached to the ceiling surface 60 a of the water turbine equipment room 60. In contrast to the parts being transported to the bottom of the carry-in / out opening 80, the transport apparatus of the present embodiment shown in FIG. 1 has the transport rail 1 installed on the ceiling surface 60a of the water turbine equipment room 60, and the transport rail. The difference is that each part of the water turbine equipment 61 including the intermediate shaft 70 is transported to the bottom of the carry-in / out entrance 80 by using the lifting jig 10 attached to the rail 1.

  That is, in the conventional example of FIG. 7, a heavy component is lifted in an unstable state by pulling the rope while lifting the rope 91 around the circumferential surface of the intermediate shaft 70 a plurality of times and lifting the intermediate shaft. It was necessary to carry out the work of transferring to the carry-in / out entrance 80 while manually securing the weight balance of the intermediate shaft. On the other hand, in the transport apparatus according to the present embodiment, the intermediate shaft and other parts are stably and securely held by the lifting jig 10, and the transport rail 1 constituting the stable transport path is used. The balance can be quickly moved to the carry-in / out port 80. The efficiency of the work of transporting from the carry-in / out port 80 to the installation location of the water turbine device at the time of carrying in can be similarly increased.

FIG. 2 is a diagram showing the configuration of the transport device for the water turbine apparatus of the present embodiment.
The transport device for a water turbine device of the present embodiment includes two transport rails 1 and 1 and a lifting jig 10 attached to the transport rail.
The transport rails 1 and 1 are made of, for example, I-shaped steel, and two trolleys (handcarts) 2 that can move along the rails are attached to each rail.
Further, the transfer rails 1 and 1 are installed on the ceiling surface 60 a so that at least the lifting jig 10 can be moved from the installation position of the watermill device 61 to below the carry-in / out entrance 80.

Each trolley 2 is provided with a chain block 3 that can manually wind up the wire 4, and a lifting jig 10 is attached to the wire 4 of each chain block 3.
The lifting jig 10 is configured by assembling vertically and horizontally two base members 11, 11 made of long bar-shaped steel and the like, and two sets of fixing members 13, 13, 14, 14 made of long bar-shaped steel. The
Wire attachment portions 12 for attaching the wires 4 of the chain block 3 are provided at both ends of each base member 11, 11.

Further, on the two base members 11, 11, the fixing members 13, 13 and the fixing members 14, 14 are attached in an orthogonal direction. That is, the fixing members 13 and 14 are attached to the base member 11 in a vertical and horizontal manner (in a cross beam shape).
Further, as shown in FIG. 3, the lifting jig 10 of the present embodiment includes a base 15 and a fixing member 13, and a fixing member 13 and a fixing member 14 that are connected by bolts 15. The fixing member 13 from the member 11 or the fixing member 14 from the fixing member 13 can be easily removed.

Hereinafter, the conveyance method by the conveyance apparatus of the watermill apparatus of this embodiment is demonstrated.
First, a method for transporting the intermediate shaft 70 will be described.
As described above, in the two-floor hydroelectric power generation facility, when performing periodic inspection and repair of the water turbine equipment 61 installed in the water turbine equipment room 60, the water turbine equipment 61 is disassembled and the water turbine equipment room 60 is passed through the carry-in / out entrance 80. Need to be taken outside. For this reason, in the two-floor hydroelectric power generation facility, an intermediate shaft 70 is provided between the generator shaft 52 and the water turbine shaft 65 so that only the turbine device 61 can be disassembled without disassembling the generator 51. By removing the, the watermill device 61 can be separated from the generator 51 and only the watermill device 61 can be disassembled.

  For this reason, in the present embodiment, first, the intermediate shaft 70 is separated from the generator shaft 52 by removing the bolt 71 at the joint portion between the intermediate shaft 70 and the generator shaft 52 that is the main shaft of the generator 51. At this time, since the intermediate shaft 70 and the water turbine shaft 65 are still connected, a space of about 10 mm is formed between the intermediate shaft 70 and the generator shaft 52 when the water turbine device 61 is displaced downward.

Next, as shown in FIG. 4A, the joint surface 70 a of the intermediate shaft 70 separated from the generator shaft 52 is fixed to the lifting jig 10.
As a method of fixing the intermediate shaft 70 to the lifting jig 10, for example, the lifting jig 10 is moved along the transport rails 1 and 1 so that the intermediate shaft 70 comes to the center with the fixing members 13 and 14 removed from the base member 11 in advance. After moving 10, the height of the lifting jig 10 is adjusted by the chain block 3 of the trolley 2, and the fixing member 13 is shaped like a cross so as to sandwich the joining surface 70 a of the intermediate shaft 70 as shown in FIG. 14 may be attached.
Next, the bolt 71 at the joint between the intermediate shaft 70 and the water turbine shaft 65 is removed to separate the water turbine shaft 65 from the intermediate shaft 70, and the spacer 72 inserted into the joint between the water turbine shaft 65 and the intermediate shaft 70. Is removed, and the four trolleys 2 to which the hoisting jig 10 is attached are pulled, so that the intermediate shaft 70 is transported to below the carry-in / out entrance 80.

As described above, when the intermediate shaft 70 is transported by using the transport device of the water turbine equipment of the present embodiment, the intermediate shaft 70 fixed to the lifting jig 10 is transported in the horizontal direction with almost no vertical movement (vertical direction). Therefore, even if the space for removing the intermediate shaft 70 is as narrow as about 40 mm, for example, the intermediate shaft 70 can be easily transported below the loading / unloading port 80 without contacting the generator shaft 52 or the water turbine shaft 65. Can do.
Of the four trolleys 2 to which the lifting jig 10 is attached, if the two trolleys located rearward when viewed from the carry-in / out entrance 80 side are of a type that follows the trolley 2 located forward, the front The intermediate shaft 70 can be transported to the bottom of the carry-in / out port 80 more simply by pulling with the two trolleys 2.

Next, the conveyance method of each component of the watermill device 61 will be described.
First, a method for conveying the water turbine shaft 65 will be described with reference to FIG. In the present embodiment, it is assumed that the water turbine shaft 65 is configured integrally with the runner 66.
When the water turbine shaft 65 is transported by the transport device of the present embodiment, the hoisting jig 10 is moved along the transport rails 1 and 1 so that the water mill shaft 65 is located at the center of the hoisting jig 10, and then FIG. ), The wire 4 of the chain block 3 is extended and the joint surface 65a of the water turbine shaft 65 is suspended and fixed to the jig 10.

  Next, as shown in FIG. 5 (b), the wire 4 is wound up by the chain block 3 to lift the water turbine shaft 65 to a height that can be transported in the horizontal direction, and then transported horizontally to the bottom of the carry-in / out entrance 80. . The method of fixing the water turbine shaft 65 to the hoisting jig 10 can be realized by the same method as the method of fixing the intermediate shaft 70 to the hoisting jig 10 and will not be described.

Next, a method for conveying parts other than the turbine wheel shaft will be described with reference to FIG.
When parts other than the turbine wheel shaft 65, such as the guide ring 63 and the upper cover 64, are transported by the transport device of the present embodiment, the wire 16 for lifting the parts is attached to the fixing member 14 of the lifting jig 10 in advance, Wire attachment portions 63 a and 64 a for attaching the wire 16 are attached to the guide ring 63 and the upper cover 64 of the device 61. The wire attachment portions 63a and 64a are preferably configured to be attached to the guide ring 63 and the upper cover 64 only when necessary with screws or the like.
In the case where the guide ring 63 and the upper cover 64 are transported by the transport device of the present embodiment after being configured as described above, the transport rail 1 is positioned so that the lifting jig 10 is positioned above the guide ring 63 and the upper cover 64. 6, after the wire 4 of the chain block 3 is extended and attached to the fixing member 14 of the lifting jig 10, the wire 16 of the guide ring 63 or the upper cover 64 is moved as shown in FIG. It attaches to the attaching parts 63a and 64a.

Next, as shown in FIG. 6B, the wire 4 is wound up by the chain block 3 and the guide ring 63 and the upper cover 64 are lifted to a height that can be horizontally conveyed, and then conveyed under the carry-in / out entrance 80. .
When each component of the water turbine device 61 is transported to the bottom of the carry-in / out entrance 80 using the transport device for the water turbine device according to this embodiment, each component is smoothly and short compared with a conventional transport method using a hanging bracket. It becomes possible to carry the product to the bottom of the carry-in / out port 80 in time, and the working time can be greatly reduced as compared with the conventional case.

  In the present embodiment, the case where the runner 66 and the water turbine shaft 65 are integrated with each other and the guide ring 63 and the upper cover 64 are conveyed are described as examples. However, this is only an example. Needless to say, other parts can also be transported. It is also possible to transport the water turbine device 61 without disassembling it.

The figure which showed schematic structure of the two-bed type hydroelectric power generation facility to which this invention is applied. The figure which showed the structure of the conveying apparatus of the watermill apparatus which concerns on this embodiment. The figure which showed the structure of the hanging jig | tool of this embodiment. Explanatory drawing of the conveying method of the intermediate shaft by the conveying apparatus of the watermill apparatus which concerns on this embodiment. Explanatory drawing of the conveyance method of the waterwheel machine axis | shaft by the conveying apparatus of the watermill apparatus which concerns on this embodiment. Explanatory drawing of the conveying method of components other than the waterwheel machine axis | shaft by the conveying apparatus of the watermill apparatus which concerns on this embodiment. The figure which showed schematic structure of the two-floor type hydroelectric power generation facility to which the conveyance apparatus of the conventional watermill apparatus was applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Conveying rail, 2 ... Trolley, 3 ... Chain block, 4 16 ... Wire, 10 ... Lifting jig, 11 ... Base member, 12 63a 64a ... Wire attaching part, 13, 14 ... Fixing member, 15 ... Bolt, 50 ... Generator room, 51 ... Generator, 52 ... Generator shaft, 60 ... Turbine equipment room, 60a ... Ceiling surface, 61 ... Turbine equipment, 62 ... Bearing oil tank, 63 ... Guide ring, 64 ... Top cover, 65 ... Turbine axle , 52a 65a 70a ... joining surface, 66 ... runner, 70 ... intermediate shaft, 71 ... bolt, 72 ... spacer, 80 ... carrying in / out port.

Claims (1)

A turbine installed with a generator installed in the upper space, and a turbine wheel shaft installed in a lower space located below the upper space and detachably fixed to the lower portion of the generator shaft of the generator; In a two-floor hydroelectric power generation facility comprising a communication port communicating with the lower space penetratingly formed at a suitable position in the floor of the upper space avoiding the generator, the installation position of the turbine equipment and the communication port A watermill equipment transport device that lifts and transports the parts of the watermill equipment between,
Two transport rails arranged in the upper part of the lower space;
Two trolleys each attached to the two transport rails;
A chain block attached to each of the trolleys and capable of manually winding a wire;
A hanging jig having a cross-shaped fixing member that is attached to the wire of the chain block and sandwiches and fixes the joint surface of the intermediate shaft that is connected to the joint surface of the water turbine shaft or the generator shaft ;
Hydraulic turbine equipment characterized in that it is configured to be transported between the installation position and the communication port of the hydraulic turbine equipment lifting the intermediate shaft for connecting the generator shaft and the waterwheel shaft by said hanging out jig Conveying device.

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