JPH0658461A - Taking-in method for hydraulic steel pipe for hydroelectric power plant - Google Patents

Abstract

PURPOSE:To promote a reduction in winch capacity and the shortening of a construction period by laying a rail in a hydraulic pipeline, making both upper and lower crabs so as to be traveled in the line center simultaneously with a winch set up at an upper end of the pipeline, while mounting both upper and lower steel pipes on these crabs for carrying-in the pipeline, connecting them at the central part, and subsequently taking them in the pipeline successively to be connected. CONSTITUTION:A rail 04 is laid down in a hydraulic pipeline 01, and an upper side crab 5 and a lower side crab 7 are connected through a wire 4 by a taking-in winch 6 set up on an upper end of this hydraulic pipeline 01, and both these crabs 5, 7 are traveled on the rail 04 relatively up and down simultaneously. Each of both upper side and lower side taking-in steel pipes 1, 2 is mounted on each of these crabs 5 and 7, conveying them to the central part of the pipeline 01. Hereat both steel pipes 1, 2 are connected to each other and the circumference is wrapped tight with anchor concrete 10, using them an upper side start pipe 8 and a lower side start pipe 9 respectively. Next, likewise both upper and lower installed steel pipes 11, 12 are conveyed and connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for bringing in a penstock of a hydraulic power plant.

[0002]

2. Description of the Related Art For example, as a method for carrying in a penstock of a pumped-storage hydroelectric power plant, conventionally, as shown in the longitudinal sectional view of FIG. 5, an upper carrying-in port 02 of a penstock line 01 which obliquely descends from a high place to a low place is shown.
Unit pipe of the penstock, that is, the carry-in iron pipe 03 is carried into the penstock 01, and this carry-in iron pipe 03 is placed on the carriage 05 that moves along the rail 04 laid in the penstock 01, A loading winch 07 in which a wire 06, which is arranged at the upper end of the road 01 and whose tip is connected to the carriage 05, is wound.
It is known that the carriage iron 05 is lowered to lower the carriage 05, and the carry-in iron pipe 03 is connected as the installation iron pipe 010 to the upper end side of the start pipe 09 which is wound and solidified in advance by the anchor concrete 08 around the lower end of the hydraulic pipe line 01. Where 01
Reference numerals 1 and 012 are the loading direction of the incoming iron pipe and the installing direction of the installation iron pipe, respectively. In this type of hydraulic iron pipe carry-in operation, the hoisting capability of the carry-in winch 07 is equal to or greater than the weight of the carry-in iron pipe 03 in consideration of pulling up the carry-in iron pipe 03 in an emergency. Further, the number of the carry-in iron pipes 03 that can be carried into the hydraulic pressure pipeline 01 at one time is limited to one.

However, in such a method of suspending and carrying in an iron pipe from the top of the pipeline, the following drawbacks are expected with the increase in size and output of the hydroelectric power plant. (1) Hydroelectric power station Especially for pumped hydroelectric power station
Since the diameter of the winch is increased and the pressure resistance thereof is increased, the weight of the winch increases and the capacity of the carry-in winch 07 must be increased, resulting in an increase in construction cost. (2) Since the hydraulic line 01 becomes long due to the high head, the carry distance of the incoming iron pipe 03 becomes long, and therefore the construction period becomes long.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of such circumstances, and the capacity of the loading winch for handling the incoming iron pipe can be small, and the loading period of the incoming iron pipe can be shortened. Therefore, it is an object of the present invention to provide a method of bringing in penstocks of a hydraulic power plant which is excellent in economic efficiency.

[0005]

Therefore, according to the present invention, the upper side carry-in iron pipe and the lower side carry-in iron pipe having the same weight are carried into the hydraulic line from the upper carry-in port and the lower carry-in port of the hydraulic line, respectively. An upper side carriage and a lower side carriage which are respectively connected to the upper and lower ends of a wire wound around a carry-in winch arranged at the upper end of the penstock Then, the upper carriage and the lower carriage are moved along the rails laid along the hydraulic pipeline, and the upper carry-in iron pipe and the lower carry-in iron pipe are installed at the central part of the hydraulic pipeline. Connect them and wrap them around with anchor concrete to make upper side start pipe and lower side start pipe, and use the upper side trolley and the lower side trolley at the upper and lower ends of the upper side start pipe and the lower side start pipe. And above Upper carry-iron pipe which is connected to the iron pipe, characterized in that each sequentially connecting the lower side carrying iron pipe.

[0006]

According to this structure, the following actions are performed. (1) Since the upper-side loading iron pipe and the lower-side loading iron pipe act as a counterweight for the loading winch, the capacity of the loading winch is reduced by about half. (2) Since the upper and lower iron pipes can be loaded from the top and bottom of the penstock, the iron pipe loading period can be reduced by half.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The same reference numerals as those in FIG. 5 denote the same members as those in the same drawing. First, in the longitudinal sectional view of FIG. The upper carry-in port 02 and the lower carry-in port 3 of the upper carry-in port 02 and the lower carry-in port 3 carried into the hydraulic conduit 01 are equal in weight. One end of 4 is connected to an upper carriage 5 on which the upper-side loading iron pipe 1 is placed, the central part is wound around a loading winch 6 arranged at the upper end of the hydraulic conduit 01, and the other end is loaded at the lower-side. Lower truck 7 on which iron pipe 2 is placed
Is a wire connected to. 8 and 9 are the upper side start tube and the lower side start tube, which have been preliminarily wound and solidified with anchor concrete 10 around the central part of the hydraulic line 01, and 11 and 12 are the upper side start tube 8 and the lower side start tube 9, respectively. , An upper installed iron pipe and a lower installed iron pipe that are sequentially formed by connecting the upper imported iron pipe 1 and the lower imported iron pipe 2 to the lower side.

Next, in FIG. 2 (A) longitudinal sectional view and FIG. 2 (B) longitudinal sectional view showing the protection procedure of the wire 4 in the upper and lower curved portions of the hydraulic conduit 01, 13 and 14 are hydraulic pressure respectively. A plurality of wire receiving rollers arranged in series on the lower side of the upper curved portion and the upper side of the lower curved portion of the pipeline 01 at appropriate intervals. In the figure, 15 and 16 are the upper end and the lower end of the hydraulic pipeline 01, respectively. It is a turntable pivotally attached to.

Further, in the front view of FIG. 3 (A) and the side view of FIG. 3 (B) showing the groove protection procedure of the upper side carry-in iron pipe 1, 1
Reference numeral 7 is an eyepiece for a fall prevention wire that is projected on the top of the outer surface upper end side of the upper carrying-in iron pipe 1, and 18 is an eyepiece for a hanging wire that is projectingly paired left and right on the outer surface upper end side bottom of the upper carrying-in iron pipe 1. , 19 are the directions of the wires in the upper curved portion of the hydraulic conduit 01. Next, in the front view of FIG. 3 (C) and the side view of FIG. 3 (C) showing the groove protection procedure of the lower-side loading iron pipe 2, 20 is the tip of the tip of the outer-side upper end side of the lower-side loading iron pipe 2. An eyepiece 21 for the prevention wire, 21 is an eyepiece for a lifting wire, which is provided on the bottom portion of the upper surface of the inner surface of the lower carrying-in pipe 2 so as to be paired left and right, and 22 is the direction of the wire in the lower curved portion of the hydraulic conduit 01.

Here, in FIG. 4 (1) longitudinal sectional view and FIG. 4 (2) longitudinal sectional view showing the procedure for connecting the upper loading iron pipe 1 to the upper starting pipe 8 as an installation iron pipe, 23 is an upper starting In the gap between the upper end surface of the pipe 8 and the lower end surface of the upper carrying-in iron pipe 1, 24 is a wedge-type stopper for fixing the upper carriage 5 on the rail 04. The top surface of 25 is an upper-side carry-in iron pipe 1
And a bottom surface that is slidable on the top plate of the upper truck 5 as a sliding surface 26, and 27 is a position adjusting jack that is attached to the upper truck 5 and that can slide the luggage tray 25. The stroke is larger than the gap 23. 28 is a chain block for carrying out the dolly.

In such an apparatus, in order to carry the penstock into the penstock 01, the penstock 01 shown in FIG.
From the upper carry-in port 02 and the lower carry-in port 3 of the same weight as the upper side carry-in iron pipe 1 and the lower side carry-in iron pipe 2 respectively.
And the upper side carriage 5 and the lower side carriage 7 connected to the upper and lower ends of the wire 4 wound around the carry-in winch 6 disposed at the upper end of the hydraulic conduit 01, respectively. 1. Place the lower loading iron pipe 2 above. Then, the upper truck 5 and the lower truck 7 are moved along the rails 04 laid along the hydraulic pipeline 01, respectively.
In the central part of 1, the upper side loading iron pipe 1 and the lower side loading iron pipe 2 are connected, and they are wound and solidified with anchor concrete 10 to form an upper side starting pipe 8 and a lower side starting pipe 9; The upper carriage 5 and the lower carriage 7 are used at the upper and lower ends of the side start pipe 9 to sequentially connect the upper carry-in iron pipe and the lower carry-in iron pipe, which are respectively connected to the iron pipes.

At that time, as shown in FIG. 4 (1), the procedure for connecting the upper-side start iron pipe 1 and the lower-side iron pipe 2 to the upper-side start pipe 8 and the lower-side start pipe 9 is as follows. When the wire 4 is forwardly rotated and one end of the wire 4 is fed out and the other end is wound, the lower-side loading iron pipe 2 first comes into contact with the lower-side starting pipe 9, and the upper-side loading iron pipe 1 and the upper-side starting pipe 8 The wire 4 is wound around the carry-in winch 6 so that a slight gap 23 is formed between the wire 4 and the wire. Subsequently, the lower-side carry-in iron pipe 2 and the lower-side start pipe 9 are connected by temporary welding 29, a stopper 24 is hung on the upper-side carriage 5, and one end and the other end of the wire 4 are respectively connected to the upper-side carry-in iron pipe 1. , Remove it from the lower-side loading iron pipe 2, and replace it with the upper-side carriage 5 and the lower-side carriage 7. Then, the position adjusting jack 27 is contracted to move the loading platform 25 toward the arrow 30,
As shown in (2) of the figure, after the upper-side loading iron pipe 1 and the upper-side starting pipe 8 are brought into contact with each other and connected by temporary welding 31, the loading winch 6 is reversed to rotate the upper-side carriage 5 ，
The lower carriage 7 is connected to the upper carry-in port 02 and the lower carry-in port 3, respectively.
And repeat this cycle work multiple times.

According to the method of this embodiment, the following effects can be obtained. (1) Since the upper carry-in iron pipe and the lower carry-in iron pipe act as counterweights for the carry-in winch, the capacity of the carry-in winch is reduced by about half, and therefore the economical efficiency of construction cost is improved. (2) Since the upper and lower iron pipes can be loaded from above and below the penstock, the iron pipe loading period will be halved and the construction cost will be more economical.

[0014]

In summary, according to the present invention, the upper carry-in iron pipe having the same weight from the upper carry-in port and the lower carry-in port of the hydraulic pipe line,
Lower side carry-in iron pipes are respectively carried into the hydraulic conduits, and upper and lower bogies are respectively connected to the upper and lower ends of the wire wound around the carrying winch arranged at the upper end of the hydraulic conduits. The upper side carry-in iron pipe and the lower side carry-in iron pipe are placed on, and the upper side trolley and the lower side trolley are respectively moved along rails laid along the hydraulic pressure pipe line, In the central part, the upper side loading iron pipes and the lower side loading iron pipes are connected and wound around them with anchor concrete to form an upper side starting pipe and a lower side starting pipe, and the upper side starting pipe and the lower side starting pipe are connected. The upper side carriage at the upper and lower ends, the upper side carry-in iron pipe connected to each of the iron pipes by using the lower side carriage,
By sequentially connecting the lower-side incoming iron pipes, the capacity of the incoming winch that handles the incoming iron pipes can be small, and the incoming iron pipe loading period can be shortened. Therefore, the present invention is extremely useful in industry.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 (A) is an overall longitudinal sectional view, and FIG. 1 (B) is a schematic view for explaining a hoisting procedure of a winch 6 for loading.

2 (A) and 2 (B) are respectively the hydraulic line 01 of FIG.
FIG. 6 is a vertical cross-sectional view showing a point of protection of the wire 4 in the up-and-down curved portion of

FIG. 3 is a groove protection diagram of the incoming iron pipe in FIG. 1, and FIG.
The front view and the same figure (B) are side views showing the upper-side loading iron pipe.
The front view (C) and the side view (D) of the figure show the lower-side incoming iron pipe, respectively.

FIG. 4 is a diagram showing how the upper-side start iron pipe 1 and the lower-side start iron pipe 2 are connected to the upper-side start pipe 8 and the lower-side start pipe 9 of FIG. 1, respectively. The side loading iron pipe 2 is temporarily attached to the lower starting pipe 9, and the lower loading iron pipe 2 and the upper loading iron pipe 1 are temporarily attached to the lower starting pipe 9 and the upper starting pipe 8.

FIG. 5 is a vertical cross-sectional view showing a known method for loading a penstock of a hydraulic power plant.

[Explanation of symbols]

 1 Upper side iron pipe 2 Lower side iron pipe 3 Lower port 4 Wire 5 Upper side truck 6 Carrying winch 7 Lower side truck 8 Upper side start pipe 9 Lower side start pipe 10 Anchor concrete 11 Upper side installation iron pipe 12 Lower side installation Iron pipe 13 Wire receiving roller 14 Wire receiving roller 15 Turntable 16 Turntable 17 Eyepiece for tipping prevention wire 18 Eyepiece for hanging wire 19 Wire direction 20 Eyepiece for tipping prevention wire 21 Eyepiece for lifting wire 22 Wire direction 23 Clearance 24 Stopper 25 Loading platform 26 Sliding surface 27 Position adjustment jack 28 Carrying-out chain block 29 Temporary welding 30 Arrows 31 Temporary welding 01 Hydraulic line 02 Upper carry-in port 04 Rail

Claims (1)

[Claims] 1. An upper carry-in iron pipe and a lower carry-in iron pipe having the same weight are respectively carried into the hydraulic pressure pipe from the upper carry-in port and the lower carry-in port of the hydraulic pressure pipe, and are arranged at the upper end of the hydraulic pressure pipe. The upper side carriage and the lower side carriage iron pipes are mounted on the upper side carriage and the lower side carriage, respectively, which are connected to the upper and lower ends of the wire wound around the carrying winch, and the upper side carriage and the lower side are mounted. Move the trolleys along the rails laid along the hydraulic pipeline, connect the upper iron carrying pipe and the lower iron carrying pipe at the center of the hydraulic pipeline, and wrap them around with anchor concrete. The upper side start pipe and the lower side start pipe are solidified and connected to each of the iron pipes by using the upper side bogie and the lower side bogie at the upper and lower ends of the upper side start pipe and the lower side start pipe, respectively. Upper side loading A method of bringing in hydraulic iron pipes at a hydroelectric power plant, characterized in that the iron pipes and the iron pipes at the lower side are sequentially connected.