JPS6318615Y2 - - Google Patents

Description

[Detailed description of the invention] The invention is based on the idea that pipes, etc. for discharging foreign substances such as rainwater are installed in the oil embankment surrounding the sides of the oil storage tank.
It relates to a structure that is installed in a penetrating state. More specifically, the present invention relates to an improvement in a pipe mounting structure for an oil dike, in which a pipe is passed through a through hole formed in the dike, and the gap between the dike and the pipe is sealed in an oil-tight manner.

Conventionally, as such a mounting structure, a mortar wall body or an asbestos wall body is provided between the outer surface of the pipe penetrating the oil barrier and the inner surface of the pipe insertion hole in the oil barrier. However, in the case of the former, cracks are likely to occur in the wall-like body and it is difficult to maintain the desired oil-tightness over a long period of time.
Moreover, in the latter case, there are disadvantages in that the pipe is likely to corrode due to the moisture in the wall-like body, and it is difficult to provide sufficient oil-tightness.

The purpose of this invention is to create a system that can reliably prevent oil leakage from pipe penetrations in oil barriers over a long period of time, and that can sufficiently withstand the pressure caused by leaked oil inside the oil barrier. There are points to improve.

The characteristic configuration of the present invention is that a sleeve is fitted into a through hole of an oil barrier in an oil-tight manner, and a sealing material between a pipe passed through the through hole and the oil barrier is shaped like a bag made of oil-resistant rubber. One of the bag-like bodies is provided in such a manner that the inner circumferential side is in pressure contact with the entire outer circumference of the pipe and the outer circumferential side is in pressure contact with the inner circumference of the sleeve, and its effects are as follows. That's right.

In other words, by pressing one bag-like body against both the outer surface of the pipe and the inner surface of the sleeve attached to the oil barrier, the inflated bag is applied to one of the pipe and the sleeve, with the other acting as a reaction force member. The shaped bodies can be brought into strong pressure contact, and oil leakage at the pipe penetration part of the oil barrier can be prevented in a highly reliable state and in a state that can sufficiently withstand the pressure of the leaked oil.

In addition, since the bag is made of oil-resistant rubber, oil leakage can be prevented reliably over a long period of time.Furthermore, the bag is pressed into contact with an oil barrier that is generally very uneven. Since the bag-like body is strongly pressed against the smooth inner surface of the sleeve fitted into the oil barrier without the need for oil leakage, reliability in preventing oil leakage can be further improved.

As a result, even if a large amount of oil were to leak into the oil dike, it would be possible to reliably prevent the oil from leaking from the pipe penetrations of the dike, and a sufficient improvement in safety could be achieved.

Next, embodiments of the present invention will be described based on the drawings.

As shown in Figure 1, concrete oil barrier 1
is erected on the lateral side of the oil storage tank 2 so as to surround it, and the foreign matter discharge pipe 3 is set so as to penetrate through the oil barrier 1 and with its end facing the sewage channel 4. Furthermore, a valve 5 for opening and closing the pipe 3 is provided, so that even if oil leaks from the tank 2, it can be prevented from flowing outside, and moreover, it is configured to prevent foreign matter such as rainwater from flowing out. It is constructed so that it can be discharged to the outside through a pipe 3.

As shown in FIGS. 2 to 4, one oil-resistant rubber bag-like body 6 made of NBR or polysulfide rubber is placed around the entire outer surface of the pipe 3 on the inner circumferential side and as a sleeve 7A on the outer circumferential side. Sleeve 7
A is fitted into the through-hole of the oil barrier 1 in an oil-tight manner, and the pipe for discharging foreign matter is sealed with good oil-tightness and pressure resistance between the outer surface of the pipe and the inner surface of the pipe insertion hole. 3 can be installed.

The bag-like body 6 is constructed by dividing it at one point in the circumferential direction, forming a protrusion 9 on one of the pair of divided end faces, and forming a recess 10 into which the protrusion 9 engages on the other. The work of externally fitting the bag-like body 6 onto the pipe 3 can be easily performed while expanding the bag-like body 6 into a C-shape.

Shape retainers 11 made of SS carbon steel are placed on both sides of the bag-like body 6 and bolted to the oil barrier 1, thereby providing heat resistance, fire resistance, and weather resistance. In addition, the bag-like body 6 is prevented from being damaged by foreign objects such as stones.

A polyethylene sheet 12 that covers the portion of the pipe 3 that penetrates the oil barrier is attached at both ends with densifiers or the like.

In carrying out the present invention, the specific structure of the bag-like body 6 can be modified in various ways, such as forming the bag-like body 6 into a simple ring shape.

The fluid to be supplied into the bag-shaped body 6 is as follows:
In addition to air, liquid may also be used.

In addition, as shown in FIG. 1, the present invention provides mounting structures for various pipes such as a pipe 13 for supplying oil into the tank 2, a pipe 14 for taking out oil, and a pipe 15 for supplying air into the tank 2. Applicable.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the oil barrier, FIG. 2 is a longitudinal side view of the pipe attachment structure, FIG. 3 is a front view of the bag-like body, and FIG. 4 is a side view of the bag-like body. 1... Oil embankment, 3... Pipe, 6... Bag-shaped body,
7A...Sleeve.

Claims (1)

[Scope of utility model registration request] Pass the pipe 3 through the through hole formed in the oil barrier 1,
A pipe mounting structure for an oil barrier in which the space between the oil barrier 1 and the pipe 3 is closed in an oil-tight manner with a plugging material, and the sleeve 7A is inserted into the through hole of the oil barrier 1 in an oil-tight manner. The plugging material is formed into a bag-like body 6 made of oil-resistant rubber, and one of the bag-like bodies 6 is made of
A pipe mounting structure for an oil barrier in which the inner circumferential side is in pressure contact with the entire outer circumference of the pipe 3 and the outer circumferential side is in pressure contact with the inner circumference of the sleeve 7A.