JPH0710715B2 - Weather sealing device for floating roof tanks - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather seal device used to prevent rainwater from entering a floating roof tank.

[0002]

2. Description of the Related Art Generally, it is well known that the floating roof of a floating roof tank is equipped with a weather seal device for shielding the space between the floating roof and the side wall to prevent rainwater from entering the tank. It seems that.

This weather seal device is provided in a floating roof tank as shown in FIG. Floating roof tank a
The floating roof b has a pan type in which a rim plate is attached to the circumference, a pontoon type having an annular floating box on the outer periphery, and a table deck in which the entire surface of the floating roof b is formed by two layers of roof plates. There is a mold, and each is formed to have buoyancy. The peripheral portion of the floating roof b and the tank side wall c are provided with a predetermined gap. This gap is made of urethane worm, rubber tube, etc.
A seal member d is provided, and it is sealed by urging it against the side wall c to prevent leakage of vapor such as gasoline. The weather seal device e shields the space between the floating roof b and the side wall c above the cushion seal member d to prevent rainwater f from entering the tank.

Conventionally, the weather seal device e is provided in the vicinity of the circumferential portion of the floating roof b, and forms a shielding wall inclined upward from the floating roof b toward the side wall c. For example, as shown in FIG. 11, this shielding wall is formed by a support member g having a base portion mounted on a floating roof b, and a seal member h attached to the tip end portion of the support member g and in contact with the side wall c. ing. The support member g is formed of a steel plate or the like, and its base is attached to the floating roof b by a hinge member i. The seal member h is formed of a copper plate or the like in order to prevent sparks from being generated due to contact with the side wall c, and is curved and formed inward of the tank so that the side section of the tip end portion has an arc shape. In this way, the side cross section of the seal member h is formed in an arc shape and is biased by the hinge member i, so that the seal member g is always in contact with the side wall c even when the floating roof b moves up and down. There is.

[0005]

By the way, the weather sealing device e of this type of floating roof tank has the following problems.

As shown in FIG. 11, rain water collects between the side wall c and the tip of the seal member h which is formed by curving inward of the tank, and this collects from the space between the seal member h and the side wall c to the side wall c. There was a problem that it penetrated into the tank along.

If the side cross section of the seal member h is formed straight to prevent such a phenomenon, the hinge member i urges the seal member h toward the side wall c, so that when the floating roof b is moved up and down. There was a problem that a catch was generated, sufficient contact could not be obtained, and the rainwater f eventually entered the tank.

When the rainwater f enters the tank, the operating rate of the oil-water separator increases and the operating electric power increases, which is uneconomical.

Further, since the rainwater f collects at the bottom of the tank, there is a problem that the heat loss of the base heater increases and the amount of steam also increases.

In view of the above-mentioned problems, it is an object of the present invention to provide a weather-sealing device for a floating roof tank which can prevent rainwater from entering the tank significantly.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a support member which is provided on the outer periphery of a floating roof so as to face the side wall and is inclined upward, and an upper part of the support member. It is made of an elastic seal body such as sponge-like chloroprene rubber that is urged so as to contact the side wall, is provided at intervals in the circumferential direction, and has a water collection groove that flows down onto the floating roof via the support member. A rainwater gutter and a support provided at an upper part of the rainwater gutter and extended so as to be in contact with the side wall, and also provided so as to face the side wall from the outer periphery of the floating roof and be inclined upward. A member and an elastic seal member such as sponge-like chloroprene rubber which is urged so as to come into contact with the side wall on the upper part of the member, and is provided at intervals in the circumferential direction. On floating roof It has a receiving portion having a flow-down is to catchment groove, and is obtained by a rainwater gutter having a sealing portion made of a conductive rubber disposed between the receiving portion and the support member.

[0012]

The rainwater gutter formed as described above extends from the support member to the side wall, and the tip of the rainwater gutter contacts the side wall to collect rainwater which is about to enter the tank and collect the rainwater. The collected rainwater is flowed down onto the floating roof by the rainwater gutter to prevent rainwater and the like from entering the tank. Further, by providing a ground member or by using a conductive rubber for the seal portion of the rainwater gutter, static electricity generated by the vertical movement of the floating roof can be released.

[0013]

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

FIG. 1 shows a first embodiment of the present invention.

As shown in the drawing, a weather seal device 2 is provided in the vicinity of the circumferential portion of the floating roof (not shown) of the floating roof tank 1.
Is provided. This weather seal device 2 is provided with a support member 3 whose base is attached to a floating roof by a hinge member (not shown) as in the conventional case. The support member 3 is provided so as to face the side wall 4 from above the floating roof and incline upward. The support member 3 is formed of, for example, a steel plate, and has a side cross-section of a straight shape, and is formed so that its longitudinal direction has an arc shape according to the circumferential shape of the side wall 4. In this embodiment, the tip end of the support member 3 inclined upward is provided at a distance from the side wall 4. A rainwater gutter 5 extended to come into contact with the side wall 4 is provided above the support member 3.

Further, a grounding member 6 is provided on the upper portion of the rainwater gutter 5 so as to extend to the side wall 4. The earth member 6 is biased against the side wall 4 by a hinge member provided at the base of the support member 3 so as to come into contact therewith. Further, the earth member 6 is formed of, for example, a copper plate or the like so that static electricity generated by the contact movement with the side wall 4 is released so that spark discharge does not occur. Further, the tip end portion of the earth member 6 is formed by being curved into the tank so that the side cross section has an arc shape, and the longitudinal direction thereof is formed in an arc shape in conformity with the circumferential shape of the side wall 4. ing.

The rainwater gutter 5 is located between the earth member 6 and the support member 3, and the earth member 6 and the rainwater gutter 5 are provided.
The support member 3 is integrally fixed by screwing bolts and nuts. FIG. 2 shows the shape of the rainwater gutter 5. As shown in the drawing, the rainwater gutter 5 is formed so that its longitudinal direction is in the shape of an arc along the side wall 4.

A rainwater introduction passage 7 is formed at a substantially central portion of the rainwater gutter 5 in the longitudinal direction. The rainwater introduction passage 7 is formed by a recess 9 for storing the rainwater 8 and an introduction groove 10 for guiding the rainwater 8 onto the support member 3. The concave portion 9 is formed so as to be inclined toward the introduction groove 10 so as to guide the rainwater 8 thereto. Also, rainwater gutter 5
The joint portions 11 formed in a lap joint shape are formed at both ends in the longitudinal direction, so that the rainwater gutters 5 adjacent to each other can be joined. Further, this rainwater gutter 5 is made of, for example, sponge-like chloroprene rubber, and is installed so that, for example, every time five support members 3 and ground members 6 are installed along the side wall 4, there is one. Has been. The rainwater gutter 5 collects rainwater 8 that has entered between the earth member 6 and the side wall 4 and flows down from the support member 3 onto the floating roof.

Next, the operation of the first embodiment will be described.

Rainwater collected between the curved tip of the earth member 6 and the side wall 4 flows down along the side wall 4. The rainwater 8 that has flowed down is formed by a rainwater gutter 5 made of, for example, sponge-like chloroprene rubber, and its tip end is extended so as to come into contact with the side wall 4, and the hinge member provided at the base portion of the support member 3 is provided. Is urged by
Water will be stopped at the upper edge of the rainwater gutter 5 that contacts the side wall 4. The rainwater 8 stopped at the upper edge of the rainwater gutter 6 is stored in a recessed portion of a rainwater introduction passage 7 formed in the rainwater gutter 5 and guided to an introduction groove 10 formed below the rainwater introduction passage 7. And
The rainwater 8 flows down onto the support member 3, and along this, flows down onto the floating roof.

The urging force of the hinge member provided at the base of the support member 3 is adjusted by the material of the rainwater gutter 5, the shape of the side wall 4 and the degree of wear of the rainwater gutter 5 as the floating roof moves up and down. .

FIG. 3 shows a first modification of the first embodiment of the present invention.

As shown in the figure, in the first modification, a bolt hole 12 for screwing the earth member 6, the rainwater gutter 5 and the support member 3 is formed in a long hole.

For example, when the rainwater gutter 5 is significantly worn,
It is possible to shift the rainwater gutter 5 upward by the elongated hole and bring it into contact with the side wall 4 again.

Further, FIG. 4 shows a second modification of the first embodiment of the present invention. As shown in the figure, in the second modified example, the upper edge portion of the rainwater gutter 5 is formed so as to be inclined from both end portions in the longitudinal direction toward the concave portion 9 in the central portion.

If formed in this way, the rainwater 8 will be more efficient.
Can be led to the rainwater introduction passage 7.

5 to 7 show a second embodiment of the present invention. As shown, the weather seal device 2
Is provided in the vicinity of the circumferential portion of the floating roof 13 of the floating roof tank 1. This weather seal device 2 includes a support member 3 whose base is mounted on a floating roof 13 by a hinge member 14 as in the conventional case. The support member 3 is provided so as to face the side wall 4 from above the floating roof 13 and be inclined upward.
The support member 3 is formed of, for example, a steel plate, and has a side cross-section of a straight shape, and is shaped so that its longitudinal direction has an arc shape according to the circumferential shape of the side wall 4. In this embodiment, similarly to the first embodiment, the tip end portion of the support member 3 inclined upward is provided at a distance from the side wall 4. A rainwater gutter 5 extended to come into contact with the side wall 4 is provided above the support member 3. Furthermore,
A dam member 15 is provided above the rainwater gutter 5.
The dam member 15 extends toward the side wall 4 and projects above the rainwater gutter 5, but does not contact the side wall 4. The tip portion of the dam member 15 is curved and formed in the tank so that the side cross section has an arc shape, and the longitudinal direction thereof is formed so as to have an arc shape according to the circumferential shape of the side wall 4. .

The rainwater gutter 5 is located between the weir member 15 and the support member 3, and these weir member 15, rainwater gutter 5 and support member 3 are integrated by screwing bolts and nuts 16 and the like. It is fixed to. The rainwater gutter 5 is formed so that the longitudinal direction thereof matches the side wall 4 and has an arc shape. An outer peripheral portion of the rainwater gutter 5 is formed as a seal portion 17 so as to project upward from other portions and come into contact with the side wall 4. This rainwater gutter 5 seal part 1
7 is a hinge member 14 provided at the base of the support member 3
Is urged against the side wall 4. Portions other than the seal portion 17 of the rainwater gutter 5 are receiving portions 18 for accommodating rainwater and the like.
Has become. Rainwater and the like are stored in a recess formed by the seal portion 17, the receiving portion 18, and the dam member 15. As shown in FIG. 6, the seal portion 1 of the rainwater gutter 5 described above.
7 is provided on the entire circumference along the inner circumference of the side wall 4, and an introduction groove 10 is formed in the central portion in the longitudinal direction of the receiving portion. The upper edge portion of the receiving portion 18 of the rainwater gutter 5 is formed to be inclined from both longitudinal ends of the rainwater gutter 5 toward the introduction groove 10 in the central portion.

An oil / water separator 19 is provided below the introduction groove 10 as shown in FIGS. 6 and 7. Further, joint portions (not shown) formed in a lap joint shape are formed at both ends in the longitudinal direction of the rainwater gutter 5 so that the rainwater gutter 5 can be joined to the adjacent rainwater gutters 5. Further, the rainwater gutter 5 is made of, for example, sponge-like chloroprene rubber, and the supporting member 3 and the dam member 15 are formed along the side wall 4.
Each time one piece is installed, one piece is attached. In particular, conductive chloroprene rubber is used for the seal portion 17 in order to have a grounding effect. Rainwater and the like are collected by the rainwater gutter 5 and the dam member 15, and are guided into the oil / water separator 19 through the introduction groove 10.

The oil / water separator 19 is formed as shown in FIGS. 7 to 9. As shown in the figure, the oil / water separator 19 is formed in two chambers, a partition wall 20 and a rainwater introducing chamber 21 and an oil component separating chamber 22, which are connected to each other near the bottom. An upper portion of the rainwater introduction chamber 21 is opened to introduce rainwater or the like from the rainwater gutter 5. In addition, the oil separation chamber 22
The upper part of the is also opened so that the rainwater stored inside overflows onto the floating roof 13. This oil separation chamber 22
An oil filter 24 is provided near the upper opening 23 of the. The oil filter 24 is formed of, for example, a mesh member, and is pressed by three rods 25 provided so as to cross the upper opening 23 in order to prevent its floating.

Next, the operation of the second embodiment will be described.

The rainwater which is about to enter the tank from the outer peripheral portion of the floating roof 13 is formed so that the rainwater gutter 5 is made of, for example, sponge-like chloroprene rubber, and the seal portion 17 thereof is in contact with the side wall 4. At the same time, since it is biased by the hinge member 14 provided at the base of the support member 3, water is stopped by the seal portion 17. In this rainwater, the oil component attached to the side wall 4 as the floating roof 13 moves up and down is collected by the seal portion 17 and mixed. The rainwater containing this oil accumulates on the recess formed by the seal portion 17, the receiving portion 18 and the dam member 15 of the rainwater gutter 5, and the receiving portion 1
Since 8 is inclined toward the introduction groove 10, it is guided to the introduction groove 10. Then, rainwater or the like is stored from the introduction groove 10 into the oil / water separator 19. As the amount of rainwater stored in the oil-water separator 19 increases, the rainwater is guided from the rainwater introduction chamber 21 to the oil-separation chamber 22, passes through the oil-filter 24, and the upper opening 23 of the floating roof 1
3 is overflowed. As described above, particularly in the second embodiment, the rainwater gutter 5 is provided with the oil / water separator 19, whereby the oil component contained in the collected rainwater or the like can be collected, and the floating roof 13 is It is safe because oil does not flow down.

Further, if conductive chloroprene rubber is used for the seal portion 17 of the rainwater gutter 5, it can have a grounding effect.

The biasing force of the hinge member 14 provided at the base of the support member 3 is the same as in the first embodiment, the material of the rainwater gutter 5, the shape of the side wall 4 and the floating roof 13 of the rainwater gutter 5. It is adjusted according to the degree of wear associated with lifting and lowering.

As described above, according to these embodiments, by collecting the rainwater 8 that is about to enter the tank and flowing it down to the floating roof and guiding it, the model measured values by the inventors are obtained. According to the conventional method, the infiltration of rainwater 8 into the tank is
It has been proved that it can be reduced to about 1/100.

[0036]

In summary, according to claim 1 of the present invention, by providing a rainwater gutter made of an elastic body that comes into close contact with the side wall, rainwater and the like that enter the tank can be prevented and collected. And can be guided down the floating roof from the support member, and the intrusion of rainwater into the tank can be largely prevented with a simple structure. By providing a grounding member,
Static electricity generated by contact movement can be released.

The operating rate of the oil-water separator for the tank can be reduced, and the amount of operating electric power is reduced, which is economical.

According to the second aspect of the present invention, the seal part of the rainwater gutter can be completely sealed and grounded by using conductive rubber.

Further, according to the first and second aspects, since the rainwater accumulated at the bottom of the tank is reduced, the heat loss of the base heater is reduced, the thermal efficiency can be improved, and the amount of steam can be reduced. it can.

Since the structure is simple, the existing weather seal device can be remodeled, which is highly versatile.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a first embodiment of a weather sealing device for a floating roof tank according to the present invention.

FIG. 2 is a perspective view showing a rainwater gutter used in a weather sealing device for a floating roof tank according to the present invention.

FIG. 3 is a side view showing a first modified example of the first embodiment of the present invention.

FIG. 4 is a perspective view showing a second modified example of the first embodiment of the present invention.

FIG. 5 is a side view of essential parts showing a second embodiment of the weather sealing device for a floating roof tank according to the present invention.

FIG. 6 is a front view of a second embodiment of a weather sealing device for a floating roof tank according to the present invention.

FIG. 7 is a side view of an oil / water separator used in the second embodiment.

FIG. 8 is a front view of the oil-water separator.

FIG. 9 is a plan view of the oil-water separator.

FIG. 10 is a partially cutaway perspective view showing a floating roof seal portion of a floating roof tank.

FIG. 11 is a side view showing a conventional weather sealing device for a floating roof tank.

[Explanation of symbols]

 1 Floating roof tank 2 Weather seal device 3 Support member 4 Side wall 5 Rainwater gutter 6 Earth member

Claims (2)

[Claims] 1. A support member inclined from above the outer periphery of a floating roof so as to face the side wall, and a sponge-like chloroprene urged on the upper part of the support member so as to come into contact with the side wall. A rainwater gutter which is composed of an elastic seal member such as rubber and which is provided at intervals in the circumferential direction and has a water collecting groove which is made to flow down onto the floating roof through the support member, and which is provided above the rainwater gutter. A weather sealing device for a floating roof tank, comprising: a grounding member extending so as to contact a side wall. 2. A support member inclined from above the outer periphery of the floating roof so as to face the side wall, and a sponge-like chloroprene urged above the support member so as to come into contact with the side wall. It has an elastic sealing member made of rubber or the like and is provided at intervals in the circumferential direction, and has a receiving portion having a water collecting groove for flowing down onto the floating roof through the supporting member, and between the receiving portion and the supporting member. The weather sealing device for a floating roof tank according to claim 1, further comprising: a rainwater gutter having a seal portion made of a conductive rubber provided in.