JP7123009B2 - Rubber sheet holding device - Google Patents

Description

The present invention relates to a rubber sheet holding device.

In facilities such as power plants and chemical plants, penetrations are formed through boundary walls of buildings such as walls, floors and ceilings in order to install piping in such facilities. The through portion must have watertightness to prevent intrusion of water or overflow, or airtightness to prevent inflow and outflow of gas. In order to secure such watertightness and airtightness, a pipe penetrating sleeve is formed inside the penetrating portion, and a pipe is formed inside the pipe penetrating sleeve.

Furthermore, in order to prevent, for example, flooding or overflow generated in one area from entering the other area through the gap of the penetration part, In order to prevent the outflow from flowing into the other area through the gap of the penetration, it is necessary to install a sealing material having watertightness and airtightness on the boundary wall.

As a hole closing material, for example, it is known that one side of a rubber sheet is attached to a pipe and the other side of the rubber sheet is attached to a pipe penetrating sleeve.

As a background art in this technical field, there is Japanese Patent Laying-Open No. 2014-81051 (Patent Document 1). This Patent Document 1 describes a sealing device in which a boot cover holds the front outer surface of a rubber boot that seals a gap between a sleeve and a pipe to suppress expansion. Furthermore, in Patent Document 1, even if an unexpected high pressure acts on the rubber boot from the sleeve, the boot cover suppresses the expansion of the rubber boot. Maintaining seal devices have been described (see abstract).

Furthermore, as a background art in this technical field, there is Japanese Unexamined Patent Application Publication No. 2014-95415 (Patent Document 2). In Patent Document 2, a support ring arranged around three pipes, a sealing material filled in a space between the support ring and the three pipes, and a sleeve fixed to the support ring and the through hole (see abstract).

JP 2014-81051 A JP 2014-95415 A

In the sealing devices and sealing structures described in Patent Documents 1 and 2, a pipe penetrating sleeve (sleeve) is formed inside the penetrating portion, and a pipe is formed inside the pipe penetrating sleeve. Patent documents 1 and 2 describe rubber sheets (rubber boots or boot members) attached to pipes, support rings, and pipe penetrating sleeves.

In the sealing device and sealing structure described in Patent Document 1 and Patent Document 2, since the rubber sheet is attached to the pipe and the pipe penetration sleeve, the pipe penetration sleeve protrudes from the boundary wall (wall or structure). ing. In other words, the rubber sheets are brought into close contact with the outer surface of the protruding portion of the pipe penetrating sleeve and the outer surface of the pipe using a tightening member such as a rubber band. This eliminates the gap between the pipe penetrating sleeve and the pipe, ensuring watertightness and airtightness.

However, when the pipe penetrating sleeve is installed so as to protrude from the boundary wall, if there is an interfering object in the vicinity, it is necessary to relocate or remove the interfering object. In addition, when the pipe penetrating sleeve is installed so as to protrude from the boundary wall, it is assumed that other planned objects cannot be installed.

In addition, when installing a new rubber sheet on the existing pipe penetration sleeve, it is necessary to add the pipe penetration sleeve that protrudes from the boundary wall to the existing pipe penetration sleeve by welding. Become. Further, in this case, in order to protrude the existing pipe penetrating sleeve from the boundary wall, it may be necessary to cut the boundary wall by chiseling or the like.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a rubber sheet pressing device capable of installing a rubber sheet between a pipe penetrating sleeve and a pipe without protruding the pipe penetrating sleeve from the boundary wall.

In order to solve the above problems, the rubber sheet pressing device of the present invention supports a rubber sheet on the inner surface of a pipe penetration sleeve, supports an arc-shaped inscribed member having a fitting portion, and an inscribed member , It has a semicircular or arc-shaped support member having a protrusion, and a screw mechanism for pressing the inscribed member against the inner surface of the pipe penetrating sleeve. One end of the externally threaded rotating portion is rotatably fitted to the protrusion of the support member, and the expanding and contracting portion has a spherical shape at one end. and the connecting portion fits into the fitting portion of the inner contact member .

Advantageous Effects of Invention According to the present invention, it is possible to provide a rubber sheet pressing device capable of installing a rubber sheet between a pipe penetrating sleeve and a pipe without protruding the pipe penetrating sleeve from the boundary wall.

Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

FIG. 2 is an explanatory diagram illustrating a rubber sheet pressing device described in Embodiment 1; FIG. 4 is an explanatory diagram illustrating a rubber sheet pressing device installed in the pipe penetration sleeve described in Embodiment 1; FIG. 10 is an explanatory diagram for explaining a rubber sheet pressing device described in Embodiment 2; FIG. 10 is an explanatory diagram for explaining a rubber sheet pressing device installed in the pipe penetration sleeve described in Embodiment 2; FIG. 11 is an explanatory diagram for explaining a rubber sheet pressing device described in Embodiment 3; FIG. 11 is an explanatory diagram for explaining a rubber sheet pressing device installed in the pipe penetration sleeve described in Example 3; FIG. 11 is an explanatory diagram for explaining a rubber sheet pressing device described in Embodiment 4; FIG. 11 is an explanatory diagram illustrating an outer ring member used in the rubber sheet holding device described in Embodiment 4;

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that substantially the same or similar configurations are denoted by the same reference numerals, and the description may be omitted if the description is redundant.

First, the rubber sheet pressing device described in the first embodiment will be explained.

FIG. 1 is an explanatory diagram illustrating a rubber sheet pressing device described in Embodiment 1. FIG.

1 shows the state in which the rubber sheet holding device 100 is contracted, and the right drawing in FIG. 1 shows the state in which the rubber sheet holding device 100 is extended. In other words, the rubber sheet pressing device 100 described in the first embodiment is extendable.

A rubber sheet pressing device 100 described in Embodiment 1 includes an inscribed member 1 that supports a rubber sheet on the inner surface of a tubular pipe penetrating sleeve that is a steel pipe, a support member 2 that supports the inscribed member 1, an inner and a screw mechanism 3 for pressing the contact member 1 against the inner surface of the pipe-penetrating sleeve.

The screw mechanism 3 is installed on the projecting portion 21 of the support member 2 and has an externally threaded rotating portion 51 internally threaded and an expansion/contraction portion 52 externally threaded. In the screw mechanism 3 , the external screw rotation portion 51 and the expansion/contraction portion 52 are in contact with each other, and the expansion/contraction portion 52 is expanded/contracted by the rotation of the external screw rotation portion 51 . A groove is formed in the projecting portion 21, and one end of the screw external rotating portion 51 is rotatably fitted in this groove.

Although one screw mechanism 3 is installed on one support member 2 in the first embodiment, a plurality of screw mechanisms 3 may be installed on one support member 2 .

Then, in the rubber sheet holding device 100 described in the first embodiment, first, in a state where the screw mechanism 3 is contracted (see the left diagram in FIG. 1), a tubular rubber made of rubber is inserted inside the pipe penetrating sleeve. After that, the screw mechanism 3 is extended by the screw mechanism 3 (see the right figure in FIG. 1), the inscribed member 1 extends from the support member 2, and the inscribed member 1 is extended from the support member 2. , the rubber sheet is pressed against the inner surface of the pipe penetrating sleeve, and the rubber sheet is installed on the inner surface of the pipe penetrating sleeve.

To prevent the screw mechanism 3 from loosening, a hole for inserting the pin 4 is formed at a constant distance (interval) between the screw external rotating portion 51 and the expansion/contraction portion 52 . A pin 4 is inserted to fix the screw mechanism 3 so that the screw mechanism 3 is not loosened while the screw mechanism 3 is in an extended state (the rubber sheet is pressed against the pipe penetrating sleeve). In addition, although the pin 4 is used to fix the screw mechanism 3 in the first embodiment, the screw mechanism 3 may be fixed to the support member 2 by, for example, welding.

In addition, the joint portion 22 of the support member 2 where the support member 2 and the inscribed member 1 are in contact with each other is designed so that the support member 2 can make contact with the inscribed member 1 at a certain free angle. 22 is assumed to be spherical (ball shape). A fitting portion 101 that fits with the coupling portion 22 is provided on the inner contact member 1 .

In addition, the support member 2 has a half-moon (semicircular) shape in order to avoid interference with the piping.

In addition, the inscribed member 1 has an arcuate shape like a part of a circle in order to improve the contact with the inner surface of the pipe-shaped pipe penetrating sleeve.

In addition, the length of the inscribed member 1 (the length of the portion in contact with the pipe penetration sleeve) and width (the size of the surface) of the inscribed member 1 are determined by the pressing force of the screw mechanism 3 (the rubber It is appropriately selected based on the relationship with the force pressing the seat 13, and the relationship with the required watertight performance and airtight performance.

In addition, in the first embodiment, the coupling portion 22 is installed in the vertical direction, but may be installed in the horizontal direction.

Next, a rubber sheet pressing device installed on the pipe penetration sleeve described in the first embodiment will be described.

FIG. 2 is an explanatory diagram for explaining a rubber sheet holding device installed on the pipe penetration sleeve described in the first embodiment.

2 shows a front view of the rubber sheet holding device 100 installed on the pipe penetration sleeve 11, and the right figure of FIG. 2 shows a side view of the rubber sheet holding device 100 installed on the pipe penetration sleeve 11. show.

In Example 1, a pipe penetrating sleeve 11 is installed inside a penetrating portion penetrating the boundary wall 10 , and a pipe 12 is installed inside the pipe penetrating sleeve 11 .

In the first embodiment, since the pipe penetration sleeve 11 does not protrude from the boundary wall 10 (see the right diagram of FIG. 2), when the rubber sheet 13 is installed on the pipe penetration sleeve 11, the rubber sheet holding device 100 is inserted through the pipe. It is installed inside the sleeve 11 via a rubber sheet 13 .

In Example 1, first, the rubber sheet holding device 100 is installed inside the pipe penetration sleeve 11 via the rubber sheet 13, and it is confirmed that the rubber sheet 13 has no slack or looseness. The inscribed member 1 is extended from the support member 2, the inscribed member 1 is pressed through the rubber sheet 13 so as to be in contact with the inner surface of the pipe penetrating sleeve 11, and the rubber sheet 13 is applied to the inner surface of the pipe penetrating sleeve 11. Install. At this time, it is confirmed again that there is no gap between the pipe penetrating sleeve 11 and the rubber sheet 13 and no gap between the rubber sheet 13 and the inscribed member 1 .

In Example 1, next, a rubber sheet 13 is fixed to the outer surface of the pipe 12 in the vicinity of the boundary wall 10 using a tightening member 14 such as a rubber band. Note that the rubber sheet holding device 100 installed inside the pipe penetration sleeve 11 is not removed.

As described above, the rubber sheet holding device 100 described in the first embodiment is a device capable of setting the rubber sheet 13 on the inner surface of the pipe penetration sleeve 11 that does not protrude from the boundary wall 10 .

One of the cylindrical rubber sheets 13 is attached to the inner surface of the pipe penetration sleeve 11, and the other of the cylindrical rubber sheets 13 is attached to the outer surface of the pipe 12 installed by penetrating the inside of the pipe penetration sleeve 11. Attach to

Thus, according to the first embodiment, the rubber sheet 13 can be installed between the pipe penetrating sleeve 11 and the pipe 12 without causing the pipe penetrating sleeve 11 to protrude from the boundary wall 10 .

Further, according to the first embodiment, one side of the rubber sheet 13 can be installed inside the pipe penetrating sleeve 11, which satisfies watertightness and airtightness, and does not require relocation or removal of an obstacle in the vicinity thereof. In addition, it is possible to reduce the time and labor required for adding the pipe penetration sleeve 11 and chipping the boundary wall 10, for example. In addition, the vicinity can be effectively utilized, and other planned objects can be installed.

Next, the rubber sheet pressing device described in Embodiment 2 will be described.

FIG. 3 is an explanatory diagram for explaining the rubber sheet pressing device described in the second embodiment.

The rubber sheet holding device 200 described in the second embodiment differs from the rubber sheet holding device 100 described in the first embodiment in that the length of the inscribed member 1 is formed to be small. This makes it possible to effectively use the pressing force of the screw mechanism 3 (the force that presses the rubber sheet 13 and is transmitted from the screw mechanism 3 to the inscribed member 1).

Next, a rubber sheet pressing device to be installed on the pipe penetrating sleeve described in the second embodiment will be described.

FIG. 4 is an explanatory diagram for explaining a rubber sheet pressing device to be installed on the pipe penetration sleeve described in the second embodiment.

4 is a front view of the rubber sheet holding device 200 installed on the pipe penetration sleeve 11, and the right view of FIG. 4 is a side view of the rubber sheet holding device 200 installed on the pipe penetration sleeve 11. show.

In Example 2, a plurality of rubber sheet pressing devices 200 are used to install the rubber sheet 13 on the pipe penetrating sleeve 11 . For example, in Example 2, three rubber sheet pressing devices 200 are used to install the rubber sheet 13 on the pipe penetration sleeve 11 .

That is, one length of the inscribed member 1 (for example, the length of the upper or lower inscribed member 1) is formed to be 1/6 of the circumference (central angle of 60 degrees), and the circumference of the pipe penetration sleeve 11 Three rubber sheet pressing devices 200 are used in the direction to press the pipe penetrating sleeve 11 from the entire circumference of its inner surface (see the left figure in FIG. 4).

In addition, in Example 2, three rubber sheet pressing devices 200 are installed in the axial direction of the pipe 12 with a shift of 60 degrees from each other (see the right diagram of FIG. 4).

Accordingly, three rubber sheet holding devices 200 can be installed without interfering with each other. In addition, this eliminates the gap between the pipe penetrating sleeve 11 and the rubber sheet 13, so that watertightness and airtightness can be ensured more reliably.

In Example 2, three rubber sheet holding devices 200 having the inscribed member 1 with a central angle of 60 degrees were used to install the rubber sheet 13, but the rubber having the inscribed member 1 with a central angle of 90 degrees The rubber sheet 13 may be installed using two sheet pressing devices 200 .

As described above, in the second embodiment, a plurality of rubber sheet holding devices 200 are installed in the axial direction of the pipe 12 and in the circumferential direction of the pipe penetration sleeve 11 at a constant angle without gaps.

In the second embodiment, by reducing the length of the inscribed member 1, the pressing force of the screw mechanism 3 is improved. Therefore, watertightness and airtightness can be ensured more reliably.

Next, a rubber sheet pressing device described in Embodiment 3 will be described.

FIG. 5 is an explanatory diagram for explaining the rubber sheet holding device described in the third embodiment.

The rubber sheet holding device 300 described in the third embodiment is different from the rubber sheet holding device 100 described in the first embodiment in that an inner ring support member 6 is installed instead of the support member 2 having a half-moon shape. differ in This improves the strength of the support member.

The inner ring support member 6 is installed on the protrusion 21 and supports the inscribed member 1 via the screw mechanism 3 . Both ends of the inner ring support member 6 are formed in an uneven shape so that a plurality of inner ring support members 6 can be connected. In addition, the inner ring support member 6 has an arcuate shape like a portion of a circle. As a result, the strength of the support member is improved, and interference with the pipe 12 can be avoided.

Next, a rubber sheet pressing device to be installed in the pipe penetrating sleeve described in the third embodiment will be described.

FIG. 6 is an explanatory diagram for explaining a rubber sheet pressing device installed on a pipe penetration sleeve described in the third embodiment.

6 is a front view of the rubber sheet holding device 300 installed on the pipe penetration sleeve 11, and the right view of FIG. 6 is a side view of the rubber sheet holding device 300 installed on the pipe penetration sleeve 11. show.

In Example 3, a plurality of rubber sheet pressing devices 300 are used to install the rubber sheet 13 on the pipe penetrating sleeve 11 . For example, in Example 3, four rubber sheet pressing devices 300 are used to install the rubber sheet 13 on the pipe penetrating sleeve 11 .

That is, the length of the inner ring support member 6 is formed to be 1/4 of the circumference (central angle of 90 degrees), and four rubber sheet pressing devices 300 are used in the circumferential direction of the pipe penetration sleeve 11, The pipe penetrating sleeve 11 is pressed from the entire inner surface thereof (see the left diagram in FIG. 6).

Further, in Example 3, the four rubber sheet pressing devices 300 can be installed without being shifted in the axial direction of the pipe 12 (see the right diagram of FIG. 6).

Thus, four rubber sheet holding devices 300 can be installed without interfering with each other. In addition, this eliminates the gap between the pipe penetrating sleeve 11 and the rubber sheet 13, so that watertightness and airtightness can be ensured more reliably.

In Example 3, four rubber sheet holding devices 300 having inner ring support members 6 with a central angle of 90 degrees were used to install the rubber sheet 13. The rubber sheet 13 may be installed using six sheet pressing devices 300 .

As described above, in the third embodiment, a plurality of rubber sheet pressing devices 300 are installed at equal intervals in the circumferential direction of the pipe penetration sleeve 11, and the plurality of inner ring support members 6 are connected at their ends.

Thus, in the third embodiment, by adjusting the screw mechanism 3, even if the pipe 12 does not pass through the central portion of the pipe penetrating sleeve 11, interference with the pipe 12 can be avoided. can.

That is, the interval (distance) between the inner ring support member 6 and the inscribed member 1 can be changed by adjusting the screw external rotating portion 51 and the expansion/contraction portion 52 of the screw mechanism 3 . For example, the distance between the inner ring supporting member 6 of the upper rubber sheet holding device 300 and the pipe penetrating sleeve 11 is reduced, and the distance between the inner ring supporting member 6 of the lower rubber sheet holding device 300 and the pipe penetrating sleeve 11 is reduced. By increasing , the rubber sheet 13 can be installed on the inner surface of the pipe penetration sleeve 11 even if the pipe 12 is displaced upward.

Next, the rubber sheet pressing device described in Embodiment 4 will be described.

FIG. 7 is an explanatory diagram for explaining a rubber sheet pressing device described in the fourth embodiment.

7 shows the rubber sheet pressing device 400, and the right view of FIG. 7A is a front view of the rubber sheet pressing device 400, FIG. 7B is a top view of the guide 7, and FIG. 7 are shown respectively.

In the rubber sheet holding device 400 described in the fourth embodiment, guides (grooves) 7 are formed in the circumferential direction of the outer surface of the inscribed member 1 (the surface in contact with the pipe penetrating sleeve 11). That is, the outer peripheral surface of the inscribed member 1 is formed in a concave shape (see the left diagram of FIG. 7). The guide 7 may be formed by processing the inscribed member 1 or may be formed by placing a member on which the guide 7 is formed on the outer peripheral surface of the inscribed member 1 .

In Example 4, the rubber sheet 13 is installed on the inner surface of the pipe penetrating sleeve 11 by using the inner contact member 1 having the guide 7 formed thereon and the outer ring member 8 . That is, the outer ring member 8 is installed on the outside of the inner contact member 1 where the guide 7 is formed, the outer ring member 8 is in contact with the rubber sheet 13, and the outer ring member 8 passes through the rubber sheet 13 over the entire circumference of the pipe. It is pressed against the inner surface of the sleeve 11 (see the right figure in FIG. 7).

As a result, a gap between the pipe penetrating sleeve 11 and the rubber sheet 13 is eliminated, and watertightness and airtightness can be ensured more reliably.

Next, the outer ring member used in the rubber sheet pressing device described in the fourth embodiment will be explained.

FIG. 8 is an explanatory diagram for explaining the outer ring member used in the rubber sheet holding device described in the fourth embodiment.

8A shows a state in which the outer ring member 8 is stretched (state before installation), and FIG. 8B shows a state in which the outer ring member 8 is contracted (state after installation). ). In addition, FIG.8(c) shows sectional drawing of the outer ring member 8. As shown in FIG.

The outer ring member 8 is, for example, a member made of metal and having elasticity. In other words, the outer ring member 8 is a member that is formed in an annular shape (ring shape) and has a force that spreads outward.

The outer ring member 8 is installed outside the inner contact member 1 where the guide 7 is formed, the outer ring member 8 is in contact with the rubber sheet 13, and the outer ring member 8 pipes the rubber sheet 13 over the entire circumference. It presses against the inner surface of the through sleeve 11 .

Moreover, the cross section of the outer ring member 8 has a V-shaped shape (see FIG. 8(c)). The outer ring member 8 is installed so as to form a V-shaped corner on the outside and a V-shaped leg on the inside. That is, the corners of the outer ring member 8 press the rubber sheet 13 and the foot portions are fitted into the guides 7 . As a result, the outer ring member 8 presses the rubber sheet 13 more reliably and stably fits into the guide 7 .

In addition, the outer ring member 8 is installed so that both ends overlap each other (see FIG. 8(b)). That is, the outer ring member 8 has an outer peripheral portion and an inner peripheral portion at the portion where the both end portions overlap, and the outer peripheral portion and the inner peripheral portion are in contact with each other and are installed so as to slide on each other. Therefore, the outer ring member 8 can maintain its annular shape even if the diameter changes to some extent.

Thus, by forming the guide 7 on the inner contact member 1, fitting the outer ring member 8 to the guide 7, and pressing the rubber sheet 13 against the inner surface of the pipe penetrating sleeve 11 via the outer ring member 8, , it is possible to ensure watertightness and airtightness more reliably with a smaller force.

In addition, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail and specificity in order to facilitate the understanding of the present invention, and are not necessarily limited to those having all the described components. Also, it is possible to replace part of the constituent elements of one embodiment with part of the constituent elements of another embodiment. It is also possible to add the constituent elements of another embodiment to the constituent elements of one embodiment. Moreover, it is also possible to add, delete, or replace part of the other constituent elements with respect to part of the constituent elements of each embodiment.

DESCRIPTION OF SYMBOLS 1... Inscribed member 2... Support member 21... Protrusion 22... Coupling part 3... Screw mechanism 4... Pin 51... Rotating part with external screw 52... Expandable part 6... Inner ring support member 7... Guide 8... Outer ring member 10... Boundary Wall 11 Pipe penetration sleeve 12 Pipe 13 Rubber sheet 14 Fastening member 100, 200, 300, 400 Rubber sheet holding device

Claims (5)

An arc-shaped inscribed member that supports a rubber sheet on the inner surface of the pipe penetration sleeve and has a fitting portion, and a semi-circular or arc-shaped support member that supports the inscribed member and has a protrusion . and a screw mechanism that presses the inscribed member against the inner surface of the pipe penetrating sleeve ,
The screw mechanism has an externally threaded rotating portion internally threaded and an expansion/contraction portion externally threaded,
one end of the externally attached screw portion is rotatably fitted to the protrusion of the support member;
A rubber sheet pressing device , wherein the expandable portion has a spherical connecting portion at one end thereof, and the connecting portion is fitted into the fitting portion of the inner contact member . 2. The rubber sheet pressing device according to claim 1 , wherein said support member is an inner ring support member having an arc shape. 3. The rubber sheet holding device according to claim 2 , wherein both ends of the inner ring support member are formed in an uneven shape. 2. The rubber sheet pressing device according to claim 1 , wherein said inscribed member has a concave guide on its outer peripheral surface. 5. The rubber sheet pressing device according to claim 4 , further comprising an elastic outer ring member fitted in said guide.

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