JPH11201321A - Installation method of pump barrel piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a pump barrel piping without any large heavy gear by elevating a string connection side of the pump barrel piping by a string of an elevating/lowering device to be mounted on a roof of a storage tank, and erecting the pump barrel piping from an approximately horizontal condition to a perpendicular condition. SOLUTION: When installation of a pump barrel piping suspension frame 13 is completed, a wire rope 16 is delivered from an electric hoist 14, the wire rope 16 is suspended in a storage tank 3 through a dummy piping 15, and its lower end is connected to a tip approximately immediately below the dummy piping 15 of a pump barrel piping 2 which is preliminarily formed on an inner tank bottom plate 9. The wire rope 16 is wound by the electric hoist 14, and the pump barrel piping 2 is gradually raised. The pump barrel piping 2 is erected in a perpendicular condition below the dummy piping 15 so as to be mounted on a truck 17. The pump barrel piping 2 is supported by an inner tank side plate 8 which a support member, a short upper pump barrel piping is inserted, and the lower end of the piping is welded to an upper end of the pump barrel piping 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for installing a pump barrel pipe.

[0002]

2. Description of the Related Art In some storage tanks, a submerged pump is installed in the storage tank to discharge the liquid in the storage tank. In such a storage tank, the submerged pump is installed in a pump barrel pipe. Is done.

Conventionally, when a pump barrel pipe is installed in a storage tank, a short pump barrel short pipe is assembled horizontally and in series on the ground surface outside the storage tank to form a long pump barrel pipe having a predetermined length. As shown in FIG. 9, the pump barrel pipe 2 is suspended vertically by the heavy equipment 1 such as a crane,
The pump barrel pipe 2 is inserted into the storage tank 3 through a hole 5 provided on the outer tank roof 4 and a sleeve pipe 7 provided on the inner tank roof 6.

In FIG. 9, 8 is an inner tank side plate, and 9 is an inner tank bottom plate.

[0005]

Since the pump barrel pipe 2 has a diameter of 600 mm, a length of 40 m, and a weight of about 10 TON, the pump barrel pipe 2 is vertically assembled from a horizontally assembled state on the ground surface to form a hole 5 or a sleeve pipe 7. In order to insert it into the storage tank 3 from the underground storage tank, it is about 45 m, and
A lifting allowance of about 0 m is required, and therefore a large heavy machine is required.

When the pump barrel pipe 2 is set up vertically on the ground surface, two heavy machines are required to suspend the pump barrel pipe 2 in a stable state.

Further, the completed pump barrel piping 2 is stored in a storage tank 3.
A sleeve pipe 7 is required to prevent the heavy pump barrel pipe 2 from swinging and interfering with the inner tank roof 6 when inserted into the inside (not necessary for the outer tank roof 4).

Further, since the pump barrel piping 2 needs to be assembled outdoors, the work is affected by the weather.

In view of the above-mentioned circumstances, the present invention does not require a large heavy machine, and requires only one heavy machine, eliminates the need for a sleeve tube, and prevents the work from being affected by the weather. An object of the present invention is to provide a method of installing a pump barrel pipe.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a lifting apparatus mounted on a roof of a storage tank by connecting a plurality of pump barrel short pipes in series in a substantially horizontal state on a bottom plate in the storage tank to form a pump barrel pipe. The string is connected to the lower end of the elevating device of the pump barrel piping, and the end of the pump barrel piping to which the string is not connected is supported by the bottom plate. By raising the object, the connecting side of the string-like object of the pump barrel pipe is raised, and the pump barrel pipe is erected from a substantially horizontal state to a vertical state.

Therefore, according to the present invention, it is only necessary to raise the pump barrel piping from a substantially horizontal state to a vertical state by an elevating device, so that a large hanging allowance is not required and a large heavy machine is not required. A sleeve tube is not required, and the work is not affected by the weather, so that the construction period can be shortened.

Further, in the present invention, when the end of the pump barrel piping on the side where the string is not connected is supported by a carriage that can move on the bottom plate, the pump barrel piping can be moved horizontally. The rise from the state to the vertical state can be performed smoothly.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 8 show an embodiment of the present invention.

In FIG. 1, reference numeral 10 denotes a plurality of pump barrel short pipes with connecting members 10a which are taken into the storage tank 3 through construction holes 5, 11 provided on the outer tank roof 4 and the inner tank roof 6, for example. Reference numeral 12 denotes a support such as a sleeper used when connecting the pump barrel short pipe 10 on the inner tank bottom plate 9. In addition, depending on the structure of the storage tank 3, the pump barrel piping 10 can be taken in from a construction hole provided in the side plate.

In FIG. 2, reference numeral 13 denotes a pump barrel pipe hanging stand installed on the outer tank roof 4, 14 denotes an electric hoist installed on the pump barrel pipe hanging stand 13, and 15 denotes a pump barrel pipe hanging stand 13. Mounted, hole 5, 1
1 (refer to FIG. 1) is a dummy pipe slightly inserted into the upper part of the storage tank 3.

In FIG. 3, reference numeral 16 denotes a wire rope which is fed from the electric hoist 14 and is connected to a portion which becomes upper when the pump barrel pipe 2 is lifted in the storage tank 3, and 17 denotes a wire rope which is lifted. Is a trolley which is movably installed on the inner tank bottom plate 9 so as to support a lower portion when the trolley 17 is in a position. The trolley 17 does not move more than necessary due to the horizontal force due to the weight of the inclined pump barrel piping 2. The bogie 17 is pulled by a winch (not shown) to the side opposite to the side where the wire rope 16 is connected, that is, backward.

In FIG. 6, reference numeral 19 denotes a support such as a sleeper for supporting the pump barrel pipe 2 which is set up vertically. In FIG.
Reference numeral 20 denotes a support member that connects the inner tank side plate 8 and the connection member 10a to support the pump barrel piping 2. In FIG. 8, reference numeral 21 denotes a pump barrel pipe 2 that penetrates the outer tank roof 4 and the inner tank roof 6.
Is an upper pump barrel pipe connected to the upper end of the pump barrel.

In FIGS. 1 to 8, the same parts are denoted by the same reference numerals.

Next, the operation procedure according to the present invention will be described.

A pump barrel short pipe 10 having a certain length with a connecting member 10a is formed on the surface of the ground, and the pump barrel short pipe 10 is hung by a small heavy machine, and the holes 5, 1
1, is carried into the storage tank 3, is placed horizontally on the support 12 disposed on the inner tank bottom plate 9, and the contact surfaces of the adjacent pump barrel short pipes 10 are sequentially welded, A pump barrel pipe 2 having a predetermined length is created (see FIG. 1).

Next, a pump barrel pipe suspension frame 13 is mounted just above the hole 5 of the outer tank roof 4, and the hole 5 of the outer tank roof 4 and the hole 11 of the inner tank roof 6 are mounted on the pump barrel pipe suspension frame 13. A dummy pipe 15 whose lower end is slightly lower than the inner tank roof 6 is connected, and an electric hoist 14 is installed above the pump barrel pipe suspension base 13 (see FIG. 2).

When the installation of the pump barrel pipe hanging stand 13 and the like is completed, the wire rope 16 is pulled out from the electric hoist 14, the wire rope 16 is inserted through the dummy pipe 15, and hangs down in the storage tank 3. The pump barrel pipe 2 previously formed on the tank bottom plate 9 is connected to a substantially lower end of the dummy pipe 15 (see FIG. 3).

Since the wire rope 16 passes through the dummy pipe 15, the wire rope 16 does not interfere with the outer tank roof 4 or the inner tank roof 6.

The wire rope 1 of the pump barrel piping 2
6 The other end of the pump barrel pipe 2 can be supported by a movable carriage 17 and the pump barrel pipe 2 can be pulled at a predetermined tension on an end of the pump barrel pipe 2 on the carriage 17 by a winch (not shown). The wire rope 18 as described above is connected, and the support 12 is removed from the lower part of the pump barrel pipe 2 in a horizontal state.

When the predetermined preparation is completed, the electric hoist 1
4 winds the wire rope 16. Therefore, the pump barrel piping 2 gradually rises as shown in FIG.
At this time, the cart 17 is pulled by the lower end of the pump barrel pipe 2 and gradually moves to the dummy pipe 15 side.
7 is pulled backward by a winch via wire rope 18 (in a direction opposite to the moving direction of the bogie 17), so that when the pump barrel pipe 2 gradually rises, the bogie 1
The carriage 17 does not move to the dummy pipe 15 side rapidly due to the horizontal force acting on the dummy pipe 15 side.

As shown in FIG. 5, when the pump barrel pipe 2 is mounted on the carriage 17 and rises vertically below the dummy pipe 15, the wire rope 16 is further wound by the electric hoist 14 and the pump The barrel pipe 2 is raised, the lower end thereof is slightly raised from the bogie 17, the bogie 17 is removed, a supporter 19 such as a sleeper is set in a portion where the bogie 17 was, and the wire rope 16 is fed out by the electric hoist 14. The pump barrel pipe 2 is lowered slightly, and its lower end is supported by a support 19 as shown in FIG.

When the pump barrel pipe 2 is in an upright state,
9, the wire rope 1 of the electric hoist 14
6, the pump barrel pipe 2 is restrained so that the pump barrel pipe 2 does not fall down, while the pump barrel pipe 2 is supported upright by the dummy pipe 15 or the roof. After the predetermined scaffold is installed, as shown in FIG. 7, the inner tank side plate 8 and the connecting member 10a attached to the pump barrel pipe 2 are connected by a horizontal support member 20, and the pump barrel pipe 2 is supported. It is supported by the inner tank side plate 8 via the member 20.

When the pump barrel pipe 2 is supported by the inner tank side plate 8 via the support member 20, the pump barrel pipe hanging stand 13, the electric hoist 14, and the dummy pipe 15 are removed from the outer tank roof 4 and the inner tank roof 6 from the outer tank roof 4 and the inner tank roof 6. It is removed, and a short upper pump barrel pipe 21 suspended from the ground side by a small heavy machine is inserted into the removed portion, and the lower end of the pipe 21 is welded to the upper end of the pump barrel pipe 2.

Now, the installation of the pump barrel piping 2 is completed, and the appearance at that time is as shown in FIG.

In the embodiment of the present invention, since the pump barrel short pipe 10 is carried into the storage tank 3 and the pump barrel piping 2 is formed in the storage tank 3, it is not necessary to take a large hanging allowance. Therefore, a large heavy machine becomes unnecessary.

In order to erect the pump barrel pipe 2 vertically, the electric hoist 14 may be used, so that it is not necessary to use a plurality of heavy machines.

Further, since a sleeve tube is not required and the operation is not affected by the weather, the construction period can be shortened.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0035]

According to the method of installing the pump barrel piping of the present invention, the construction cost of the storage tank can be reduced since a large-sized heavy machine or a plurality of heavy machines is not required in any of the first and second aspects. In addition, the sleeve tube becomes unnecessary, and the work is not affected by the weather, so that the construction period can be shortened. Various excellent effects can be achieved, such as the ability to smoothly rise to the vertical state.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a pump barrel short pipe is connected to form a pump barrel pipe in a storage tank in an embodiment of the present invention.

FIG. 2 is a front view showing a state in which a pump barrel pipe suspension base is installed on an outer tank roof and dummy pipes are connected to an inner tank roof and an outer tank roof in the embodiment of the present invention.

FIG. 3 shows a state in which the tip of the pump barrel pipe is suspended by a wire rope drawn out from an electric hoist installed on a pump barrel pipe suspension base and the rear end of the pump barrel pipe is supported by a cart in the embodiment of the present invention. FIG.

FIG. 4 is a front view showing a state in which a pump barrel pipe gradually rises by winding a wire rope with an electric hoist in the embodiment of the present invention.

FIG. 5 is a front view showing a state in which a pump barrel pipe is upright when mounted on a truck in the embodiment of the present invention.

FIG. 6 is a front view showing a state in which a lower end of a vertically upright pump barrel pipe is supported by a support such as a sleeper in the embodiment of the present invention.

FIG. 7 is a front view showing a state in which the pump barrel piping is supported on the inner tank side plate via a support member in the embodiment of the present invention.

FIG. 8 is a front view showing a state where the pump barrel piping and the upper pump barrel piping are installed in a predetermined state.

FIG. 9 is a front view showing an example of a conventional method for carrying a pump barrel pipe created on the ground surface outside the storage tank from above the outer tank roof into the storage tank.

[Explanation of symbols]

 2 Pump barrel piping 3 Storage tank 4 Outer tank roof (roof) 6 Inner tank roof (roof) 9 Inner tank bottom plate (bottom plate) 10 Pump barrel short tube 14 Electric hoist (elevating device) 16 Wire rope (string-like object) 17 cart

Claims (2)

[Claims] 1. A pump barrel pipe is formed by connecting a plurality of pump barrel short pipes in series in a substantially horizontal state on a bottom plate in a storage tank, and a string of an elevating device mounted on a roof of the storage tank is connected to the pump barrel pipe. The pump is connected to the lower end of the elevating device, and the pump is lifted by raising the string in a state in which the end of the pump barrel pipe to which the string is not connected is supported on the bottom plate side. A method for installing a pump barrel pipe, comprising raising a string connecting side of the barrel pipe to erect the pump barrel pipe from a substantially horizontal state to a vertical state. 2. The method according to claim 1, wherein an end of the pump barrel piping on the side where the string is not connected is supported by a carriage movable on the bottom plate.