JP3003754U - Mounting device for columns in a floating roof tank - Google Patents

Abstract

(57) [Summary] [Objective] A prop mounting device is proposed for use in a floating roof tank when a part of the floating roof is bent due to the weight of the liquid ejecting apparatus. [Structure] A floating roof type tank is a mounting device that is used in a state in which a column 1 that has been removed is loosely inserted into a support pipe A and a lower end is supported by a bottom portion, and a lifting lateral arm 2 that is detachably attached to the column 1. And a split-type band 3 that has a knock bolt hole 31 and is detachably attached to the support pipe A, and a lifting vertical rod 4 that connects the lifting horizontal arm 2 and the band 3. By raising the vertical rod 4, the band 3 and the support pipe A are raised, and the pin 5 is inserted and attached while the insertion hole B provided in the support pipe A and the through hole 12 provided in the support column 1 are communicated with each other. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention removes a part of a pillar in a floating roof tank and attaches a liquid injection device to fluidize and discharge sludge accumulated in the tank, or after cleaning the inner surface of the tank, The present invention relates to a column mounting device that is applied when a part of the floating roof is bent due to the weight of the system and the column is attached, but the through hole of the column does not match the insertion hole of the support pipe.

[0002]

[Prior art]

 A method for removing sludge and the like accumulated inside a floating roof tank by a liquid ejecting device which is detachably attached to a floating roof is disclosed in, for example, Japanese Patent Publication No. 3-79280. Is.

The above conventional example will be described below with reference to FIG. 1. 1'is a tank, 2'is a floating roof that moves up and down corresponding to the liquid level in the tank 1, and 3'is fixed to the floating roof 2 '. A support column 2'that is detachably attached to the support pipe 2a 'is a liquid ejecting apparatus that is also detachably attached to the support pipe 2a', which is the same as the above publication or Japanese Utility Model Publication No. 4-33275. As is disclosed in US Pat. No. 6,968,962, a high-pressure liquid is ejected from the ejection port at the lower end while rotating and rocking to remove the deposit a ′ such as sludge.

Reference numeral 5'denotes a pump for discharging the removed deposit a'and liquid, and 6 stores the liquid containing the deposit a'exhausted by the pump 5, and at the same time deposit a '. A recovery tank for separating the liquid and the liquid, and a pump 7'for supplying the liquid recovered from the recovery tank 6'to the liquid ejecting apparatus 4 '.

Next, the case of removing the deposit a ′ accumulated in the tank 1 ′ will be described. When a certain amount of deposit a'is deposited, the liquid in the tank 1'is first discharged. At this time, the floating roof 2 ′ descends as the liquid is discharged, but when it descends to a certain extent, the lower ends of the pillars 3 ′ attached to the floating roof 2 ′ reach the bottom surface of the tank 1 ′ and are supported by the floating roof 2 ′. Since the'support pipe 2a 'of the'is fixed by a pin at a fixed position of the pillar 3', the floating roof 2'stops at a constant distance from the bottom of the tank. On the other hand, immediately before the lower end of the column 3'reaches the bottom surface of the tank 1 ', the column 3'at a desired position is pulled out from the support pipe 2a', and the liquid ejecting apparatus 4 is mounted instead. Then, the liquid is supplied to the liquid ejecting apparatus 4 ', and the tip thereof is rotated and rocked to eject the liquid into the tank 1'. As a result, the deposit a'is crushed, dispersed, and fluidized by the jetting force of the liquid. Then, the crushed, dispersed, and fluidized deposit a'is discharged by the pump 5'and guided to the recovery tank 6 '.

As the above floating roof 2 ', since it normally floats on the liquid surface of the stored liquid, a relatively thin plate material is used. Only the floating roof 2'will be supported. Further, when cleaning the inside of the tank 1 ', since some of the columns 3'are replaced with the liquid ejecting apparatus 4'as described above, the remaining columns 3'support the floating roof 2'and the liquid ejecting apparatus 4'. It will be. Furthermore, since the weight of the liquid ejecting apparatus 4'is added to the portion where the liquid ejecting apparatus 4'is attached, the liquid ejecting apparatus 4'will be deformed downward after the cleaning work. Therefore, even if the liquid ejecting apparatus 4'is removed and the column 3'is attached again after the cleaning work, the through hole provided in the column 3'and the insertion hole provided in the support pipe 2a 'do not communicate with each other. Could not be inserted and could not fulfill the role of the post 3 '.

Therefore, conventionally, after removing the contained liquid from the inside of the tank 1 ′, an operator accompanied by an elevating device such as a jack enters into the tank 1 ′ and removes the lower surface of the bent portion of the floating roof by the elevating device. The pins were pushed up by making the through holes of the support columns 3'and the insertion holes of the support pipes 2a 'communicate with each other.

[0008]

[Problems to be solved by the device]

 However, in the above-mentioned conventional method, since the operator cannot confirm the proper state in the tank 1 ', another operator inserts the through hole of the tank support column 3'and the support column 3'on the upper surface of the floating roof 2'. It was necessary to inform that the hole was in communication. It was also extremely time consuming. Further, when the liquid contained in the tank 1'is oil, there are problems of aspiration toxicity and flammability. Further, in order to eliminate the above flammability, the tank 1'may be filled with nitrogen gas or the like, but there is a problem that another inhalation toxicity occurs for the worker.

[0009]

[Means for Solving the Problems]

 The present invention has been proposed in view of the above, and in a floating roof tank in which a floating roof provided with a large number of support pipes rising upward from the hole edge is held at a constant distance from the bottom by a plurality of removable columns, It is a mounting device that is used with the removed support post loosely inserted into the support pipe and the lower end supported on the bottom part.It has a lifting horizontal arm detachably attached to the support post and a support pipe with a knock bolt hole. It consists of a detachable band that is detachably attached, and a lifting vertical rod that connects the above-mentioned horizontal arm for lifting and the band, and raises the above-mentioned vertical rod for lifting to raise the band and the support pipe and support them. A device for mounting a pillar in a floating roof tank, characterized in that a pin is inserted while the insertion hole provided in the pipe and the through hole provided in the pillar are in communication with each other. A.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail with reference to embodiments of the drawings.

The mounting device of the present invention is roughly divided into a lifting lateral arm 2 that is detachably attached to a column 1, and a split band 3 that has a knock bolt hole 31 and is detachably attached to a support pipe A. And a hoisting vertical rod 4 connecting the hoisting horizontal arm 2 and the band 3.

In the first embodiment shown in FIG. 2, the hoisting lateral arm 2 is detachably attached to the laterally long hole 21 while the inverted U-shaped projection 11 fixed to the upper end of the column 1 is fitted. be able to. It should be noted that through holes 22 and 22 through which the vertical lifting rods 4 and 4 are inserted are provided on the left and right of the horizontal hoisting arm 2, and the male rods of the vertical lifting rods 4 and 4 are provided at the upper edges of the through holes 22 and 22. Nuts 42, 42 are screwed onto the screw portions 41, 41. Therefore, by rotating the nuts 42, 42, the lifting vertical rod 4 can be moved up and down with respect to the lifting horizontal arm 2.

Further, the band 3 with two cracks penetrates from the outer peripheral side of the knock bolt hole 31 and projects the knock bolt 32 to the inner surface side to insert the knock bolt 32 into the insertion hole B of the support pipe A. Can be detachably attached to. Connection parts 33, 33 are provided on the outer circumference of the band 3, and the lower ends of the lifting vertical rods 4, 4 are fixed to the connection parts 33, 33 by fixing nuts 43, 43.

A method of mounting the removed pillar 1 on the floating roof C of the floating roof tank by using the mounting device having the above-described configuration will be described below.

First, the column 1 removed by cleaning the inside of the tank or the like is loosely inserted into the support pipe A of the floating roof C to support the lower end on the bottom. At this time, since the support pipe A is bent downward from the proper position by the use of the liquid ejecting apparatus, the through hole 12 of the support column 1 and the insertion hole B of the support pipe A should not coincide with each other. The through hole 12 of No. 1 and the insertion hole B of the support pipe A are arranged vertically.

The floating roof C in the illustrated embodiment has a structure in which a support pipe A having a substantially hat-shaped cross section is fixed to the upper surfaces of a plurality of hole edges by welding or the like. This is a configuration in which a large number of support pipes A that rise upward from the edge are provided. Then, a state in which the insertion hole B of the support pipe A and the through hole 12 of the support column 1 are communicated with each other and the pin 5 is inserted thereinto is a proper mounting state of the support column 1 to the floating roof C. However, since the support pipe A is bent downward as described above, in this state, the insertion hole B of the support pipe A is located below the through hole 12 of the support column 1 and the pin 5 can be inserted. Absent.

Therefore, the band 3 is attached to the outer periphery of the support pipe A, and the insertion hole B of the support pipe A and the knock bolt hole 31 of the band 3 are communicated with each other. Then, the tip of the knock bolt 32 is fitted into the insertion hole B of the support pipe A. At this time, if tightened with an excessive force, the knock bolt 32 will also come into contact with the column 1, so be careful. In this state, the band 3 and the support pipe A behave integrally.

Next, the horizontally elongated hole 21 of the hoisting horizontal arm 2 is fitted into the projection 11 of the support column 1, and the hoisting vertical rods 4 are attached to the hoisting lateral arm 2 and the connecting portion 33 of the band 3, respectively. Kick The procedure for assembling each member is as described above.

When the nuts 42, 42 are rotated in this state, the lifting vertical rod 4 rises and the band 3 and the support pipe A rise, and as shown in FIG. 3, the knock bolt 32 and the support pipe A immediately. The insertion hole B of is gradually approaching the through hole 12 of the column 1. Then, as shown in FIG. 4, the state in which the insertion hole B of the support pipe A and the through hole 12 of the support column 1 communicate with each other and coincide with each other can be visually confirmed from the direction opposite to the direction in which the knock bolt 32 is inserted. 7. When this state is reached, the rotation of the nuts 42, 42, that is, the lifting of the lifting vertical rod 4 may be stopped.

Then, as shown in FIG. 5, the knock bolt 32 is pulled out while inserting the pin 5 into the insertion hole B of the support pipe A and the through hole 12 of the support column 1 from the side opposite to the knock bolt 32. When the insertion of 5 is hard, the push-in bolt 6 may be screwed in as shown in FIG.

As described above, when the mounting device of the present invention is used, the support 1 can be mounted from above the floating roof C easily and in a short time, and the conventional problems of inhalation toxicity and flammability are solved. Can be completely resolved.

In the second embodiment shown in FIG. 7, since the boss D is provided at the edge of the insertion hole B of the support pipe A for the purpose of reinforcing the insertion hole B 1, the knock bolt as described above is provided. (32) may not be used. That is, as shown in the figure, when the band 3 is attached so that the upper end of the band 3 is located below the boss D and the band 3 is raised in the same manner as in the first embodiment, the upper end of the band 3 pushes the boss D from below. Since it is supported, the support pipe A can be raised in series.

In the second embodiment described above, the work is simplified because the knock bolt (32) is not required to be attached / detached, and the pin 5 can be inserted / attached more easily. In this way, the column 1 can be mounted more easily and in a shorter time.

Further, the double portion of the floating roof C and the portion with large distortion are heavy, and the force for tightening the nuts 42, 42 may be excessive. When the lifting weight is large as described above, for example, as shown in FIG. 8, the thrust bearings 6, 6 are interposed between the nuts 42, 42 and the hoisting horizontal arm 2 to reduce the frictional resistance and reduce the frictional resistance. May be easily rotated. Further, as shown in FIG. 9, a jack base 7 and a telescopic hydraulic jack 8 may be attached to the upper end of the pillar 1, and the hoisting lateral arm 2 may be attached to the upper end thereof to extend the hydraulic jack 8. . In this case, it is not necessary to rotate the nuts 42, 42, and the horizontal lifting arm 2 and the vertical lifting rod 4 are integrally lifted by the extension of the hydraulic jack 8.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-mentioned embodiments, and may be modified in any manner as long as the configuration described in the claims for utility model is not changed. It can be carried out.

[0026]

[Effect of device]

 As described above, according to the present invention, it is possible to easily and easily attach the support pillars from above the floating roof, and completely solve the conventional problems of intake toxicity and flammability. It can be performed.

[Brief description of drawings]

FIG. 1 is a side sectional view schematically showing a state in which the inside of a floating roof tank is washed by a liquid ejecting apparatus.

FIG. 2 is an exploded perspective view of a mounting device according to an embodiment of the present invention.

FIG. 3 is a partially cutaway front view showing a state where an elevating mechanism is driven.

FIG. 4 is a partially cutaway front view showing a state in which the lifting mechanism is stopped.

FIG. 5 is a partially cutaway side view showing a pin insertion state when the lifting mechanism is stopped.

6 is a cross-sectional view showing the main parts of FIG.

FIG. 7 is a partially cutaway side view showing another embodiment.

FIG. 8 is a partially cutaway front view showing another embodiment.

FIG. 9 is a partially cutaway front view showing another embodiment.

[Explanation of symbols]

 1 Support 12 Through hole 2 Lifting horizontal arm 3 Band 31 Knock bolt hole 4 Vertical rod for lifting 5 Pin A Support pipe B Insert hole C Floating roof

Claims (4)

[Scope of utility model registration request] 1. In a floating roof type tank in which a floating roof having a large number of support pipes rising upward from a hole edge is held at a constant distance from the bottom by a plurality of removable columns, the removed columns are used as support pipes. It is a mounting device used in a state where it is loosely inserted and supported at the lower end on the bottom part, and a lateral arm for lifting that is detachably attached to a column, and a split type band that has a knock bolt hole and is detachably attached to a support pipe. And a hoisting vertical rod connecting the hoisting horizontal arm and the band, and the hoisting vertical rod is lifted to raise the band and the support pipe, and the support pipe is provided with an insertion hole and a column. A device for mounting a pillar in a floating roof tank, characterized in that a pin is inserted in a state in which the pin and the through hole are connected to each other. 2. A vertical rod for hoisting having a male screw portion provided above is inserted into a through hole formed in a lateral arm for hoisting mounted on the upper end of a column, and a nut is screwed onto the male screw portion from above. The support mounting device for a floating roof tank according to claim 1, wherein the lifting vertical rod is lifted by wearing and tightening. 3. A support mounting device for a floating roof tank according to claim 2, wherein a thrust bearing is interposed between the nut and the hoisting lateral arm. 4. A hoisting lateral arm and a hoisting vertical rod are raised by attaching the hoisting lateral arm to an upper end of a column via a telescopic jack and extending the jack. The mounting device for a pillar in a floating roof tank according to claim 1.