JPH0728160Y2 - Oil tank piping maintenance equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is suitable for performing maintenance work such as inspection and repair by draining oil from a pipe connecting the oil tank and the oil pump as an oil passage. The present invention relates to a maintenance device for tank piping.

[0002]

2. Description of the Related Art FIG. 5 shows a pump station that sucks oil Q stored in an oil tank 3 by a pump 2 operated by an electric motor 1 and supplies the oil Q to other equipment. The pump 2 is connected to the electric motor 1 by a joint 4, an oil tank 3 is arranged at a position slightly separated from the electric motor 1 and the pump 2, and an oil tank is provided between the pump 2 and the oil tank 3. A pipe 5 which is an oil flow path for sucking the oil Q in the tank 3 is attached. The pipe 5 is formed by connecting a hose 6 connected to the pump 2 and a pipe 7 connected to the oil tank 3 by a nipple 8. The hose 6 is connected to the pump 2 via a flange 6a, and The pipe 7 penetrates the oil tank 3 in a liquid-tight state. A discharge pipe (not shown) is also connected to the pump 2.

A pipe 7 penetrating into the oil tank 3 extends horizontally near the bottom of the oil tank 3, and a suction strainer 9 is attached to an opening 7a at an end of the oil tank 3 which is directed upward. ing. The suction strainer 9 is submerged below the oil level Q ₁ of the oil Q in the oil tank 3.

The suction strainer 9 is, for example, as shown in FIG.
As shown in, a center bolt 12 is fixed to the upper center of a cylindrical strainer body 11 having a filter 10, and a guide holder 14 having a spring 13 inside is fixed to the upper end of the center bolt 12. The disc-shaped convex portion 11a formed in the center of the lower end surface of the strainer main body 11 is fitted into the opening 7a of the pipe 7, and as shown in FIG.
It is attached to the opening 7a by closing the lid 16 for closing 5. A pressing piece 16a is provided on the lower surface of the lid 16, and the pressing piece 16a presses the spring 13 in the guide holder 14, whereby the suction strainer 9 is stably attached to the opening 7a.

By the way, for the pump 2 and the pipe 5,
When performing maintenance work such as inspection and repair, it is necessary to drain the oil Q present inside these, but in order to do so, prevent the oil Q in the oil tank 3 from flowing into the pipe 5 and reaching the pump 2. Will be needed. Conventionally, in order to do so, the suction strainer 9 is removed and the opening 7a of the pipe 7 submerged in the oil Q is sealed with a cap, and then the hose 6 is removed from the pump 2 to remove the oil Q in the pipe 5 by another pump. Suction and let it flow out, or the oil tank 3
The oil Q in the pipe 5 was extracted by almost removing the oil Q in the inside.

[0006]

However, when the cap is attached to the opening 7a of the pipe 7, the hand is immersed in the oil Q from the maintenance hole 15 of the oil tank 3, so that the hand is soiled by the oil Q. Since it is difficult to attach the cap, the work is difficult, and it takes time and time to process the oil that has leaked to the outside. Also. In order to remove most of the oil Q in the oil tank 3, the oil Q must be temporarily transferred to a separately prepared tank, and when maintenance work is completed, the oil Q must be returned to the oil tank 3 again, which requires a large amount of work. It also wastes time.

The present invention has been made in view of the above circumstances, and is an oil tank pipe in which oil existing in the pipe connected to the oil tank can be easily drained without much labor and time. The purpose is to provide a maintenance device.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an oil tank having a maintenance hole in the upper portion is penetrated by a pipe as an oil passage, and the oil tank of this pipe is In the maintenance device for the piping of the oil tank, the opening inside is in a state of being submerged below the oil level of the oil stored in the oil tank, and a pipe inserted into the oil tank through the maintenance hole. , A connection part provided at one end of the pipe and liquid-tightly connected to the opening, the other end of the pipe being positioned at least above the oil level in a state where the connection part is connected to the opening. The pipe is in communication with the pipe, and a handle for operating the pipe is attached to the other end of the pipe.

[0009]

According to the present invention, by simply connecting the connecting portion to the opening of the pipe in the oil tank, the pipe and the oil tank are shut off and the oil in the oil tank is prevented from flowing into the pipe. . The maintenance work of the pipe can be performed by draining the oil in the pipe from the maintenance device. Therefore, unlike the conventional case, the hand is not soiled and the oil is not leaked to the outside, so that the oil in the pipe can be easily drained without taking time and labor.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 3 in FIG. 1 is the same as that shown in FIG.
Reference numeral 7 is an oil tank for storing the oil Q sucked by the pump 2, and reference numeral 7 is a pipe which also constitutes the pipe 5. The maintenance hole 15 is provided in the upper part of the oil tank 3, and the opening 7 a of the pipe 7 is located immediately below the maintenance hole 15. FIG. 4 shows a state in which the maintenance device 20 according to the present invention is attached to the opening 7a of the pipe 7.

As shown in FIGS. 2 and 3, the maintenance device 20 is provided with a circular pipe 21 inserted into the oil tank 3 through the maintenance hole 15 and one end which is the lower end of the pipe 21. Connection part 2 liquid-tightly connected to the opening 7a
2 and a handle 23 attached to the other end which is the upper end of the pipe 21.

The pipe 21 is made of metal such as steel and has a smaller diameter than the pipe 7 of the pipe 5. The connecting portion 22 provided at one end of the pipe 21 is also made of metal, and is a cylindrical flange 24 having a diameter larger than that of the pipe 21 whose lower side is opened.
A seal ring 25 is attached to an annular groove formed along the circumferential direction on the inner peripheral surface of the pipe 21. One end of the pipe 21 is inserted into a through hole 24a formed in the center of the flange 24, and both are welded. As a result, the flange 24 is fixedly provided on the pipe 21. The inner diameter of the flange 24 is slightly wider than the outer diameter of the opening 7a of the pipe 7, and the outer periphery of the opening 7a of the pipe 7 is liquid-tightly fitted inside the flange 24 with the seal ring 25 interposed therebetween. Has been done.

As described above, the pipe 21 is substantially upright with the connecting portion 22 connected to the opening 7a of the pipe 7, and its upper end opening is above the oil level Q ₁ of the oil Q in the oil tank 3. Located slightly above the maintenance hole 15. Then, with the connecting portion 22 thus connected to the opening 7a of the pipe 7, the pipe 21 and the pipe 5 on the maintenance device 20 side are connected.
The pipe 7 of is connected.

The handle 23 is made of a metal pipe or rod thinner than the pipe 21 and has a base end portion 2.
3a is welded to the outer peripheral portion of the upper end of the pipe 21, an intermediate portion 23b extends obliquely from the welded portion, and the tip portion 23c has the pipe 21 connected to the connecting portion 2 as described above.
It is configured to be substantially horizontal when it is connected to the pipe 7 in an upright state via 2.

To use the maintenance device 20 having the above-described structure, the tip 23c of the handle 23 is grasped and inserted into the oil tank 3 through the maintenance hole 15, and the flange 24 of the connecting portion 22 is fitted into the opening 7a of the pipe 7. Connect with. With the maintenance device 20 installed in the oil tank 3 in this way, the oil Q in the oil tank 3 is contained in the maintenance device 20 (inside the pipe 21 and the flange 24), but the pipe 7 and the oil Tank 3
The oil Q in the oil tank 3 does not enter the pipe 7 and the maintenance device 20 any more.

Then, as shown in FIG. 4, for example, the suction side hose 27 of the generally used manual pump 26 is inserted into the pipe 7 of the maintenance device 20 from the maintenance hole 15,
By putting the discharge-side hose 28 in the oil tank 3 outside the maintenance device 20 and operating the pump 26, the oil Q existing in the pipe 5 including the pipe 7 can be drained. After the oil Q in the pipe 5 is drained in this way, maintenance work such as inspection or repair of the pipe 5 or the pump 2 can be performed.

According to the maintenance device 20 of the above-described embodiment, the pipe 5 and the oil tank 3 are shut off by simply connecting the connecting portion 22 of the maintenance device 20 to the opening 7a of the pipe 7. The oil Q in 3 is prevented from flowing into the pipe 5,
By removing the oil Q in the pipe 5 from the maintenance device 20, maintenance work for the pipe 5 or the pump 2 can be performed. Therefore, unlike the conventional case, the hands Q are not soiled and the oil Q does not flow out to the outside, so that the oil Q in the pipe 5 can be easily drained without taking time and labor.

Further, since the maintenance device 20 is composed of simple members such as the pipe 21, the connecting portion 22 mainly including the flange 24, and the handle 23, the structure is simple and the manufacturing cost is low. It has the advantage of being completed.

[0019]

As described above, according to the oil tank pipe maintenance device of the present invention, the pipe and the oil tank are shut off simply by connecting the connecting portion to the opening of the pipe in the oil tank. The oil in the oil tank is prevented from flowing into the piping, and the piping maintenance work can be performed by draining the oil out of the piping from this maintenance device. The oil does not leak out to the end of the pipe, and the loss of the oil does not occur, and the oil in the pipe can be easily drained and the maintenance work can be performed without requiring time and labor. Further, since the structure is simple including the pipe, the connecting portion and the handle, the manufacturing cost is low.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which an embodiment of the present invention is set in an oil tank.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a partial sectional side view of the embodiment.

FIG. 4 is a side sectional view showing a usage state of the embodiment.

FIG. 5 is a side view showing a general outline of a pump station.

FIG. 6 is a partial cross-sectional side view of a suction strainer.

FIG. 7 is a side sectional view showing a structure for fixing a suction strainer by means of a lid of an oil tank.

[Explanation of symbols]

3 Oil tank 5 Piping 7 Pipe (piping) 7a Opening 15 Maintenance hole 20 Maintenance device 21 Pipe 22 Connection part 23 Handle Q Oil Q ₁ Oil surface

Claims (1)

[Scope of utility model registration request] 1. An oil tank having a maintenance hole in the upper part is penetrated by a pipe as an oil flow passage, and an opening of this pipe in the oil tank is located below an oil level of oil stored in the oil tank. A maintenance device for an oil tank pipe in a submerged state, comprising a pipe inserted into the oil tank through the maintenance hole, and a connection provided at one end of the pipe and liquid-tightly connected to the opening. And a pipe connected to the opening, the other end of the pipe is located at least above the oil level, and the pipe and the pipe communicate with each other. A maintenance device for piping of an oil tank, which is equipped with a handle for operating the pipe.