Seal structure

Abstract

To improve sealing performance in a seal structure.SOLUTION: The seal portion includes an elastic member having a ring shape and disposed between an inner peripheral surface of the penetration portion and an outer peripheral surface of the penetration member, a first breaker material disposed between the inner peripheral surface of the penetration portion on one surface side of the elastic member and the outer peripheral surface of the penetration member, a second breaker material disposed between the inner peripheral surface of the penetration portion on the other surface side of the elastic member and the outer peripheral surface of the penetration member, and a seal material disposed between the inner peripheral surface of the penetration portion on a side opposite to the elastic member in the second breaker material and the outer peripheral surface of the penetration member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a seal structure. [Background technology]

[0002] In various plants, a large number of pieces of equipment are installed inside a building, and the equipment needs to be connected to the outside via power lines, signal lines, water pipes, exhaust pipes, etc. For this reason, the building has through-holes in the floor (ceiling) and walls, and pipes are inserted and arranged through the through-holes. Seals are provided in the gaps between the inner surfaces of the through-holes in the floor and walls and the outer surfaces of the pipes to seal them. The seals are required to have performance such as earthquake resistance, water resistance / water stoppage, and fire resistance. For example, one such technology is described in the following Cited Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5649618 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, if a through-hole is provided vertically in the floor (ceiling), downward stress acts on the seal provided between the through-hole in the floor and the piping, which raises concerns about a decrease in the sealing performance of the seal member.

[0005] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a seal structure that improves sealing performance. [Means for solving the problem]

[0006] The sealing structure of the present disclosure, which is intended to achieve the above-mentioned object, is a sealing structure having a penetration portion provided in a wall portion of a structure and a sealing portion that connects the wall portion and a penetrating member inserted through the penetration portion, and the sealing portion comprises: an elastic member that is arranged between the inner surface of the penetration portion and the outer surface of the penetrating member and has a ring shape; a first breaker material that is arranged between the inner surface of the penetration portion on one side of the elastic member and the outer surface of the penetrating member; a second breaker material that is arranged between the inner surface of the penetration portion on the other side of the elastic member and the outer surface of the penetrating member; and a sealing material that is arranged between the inner surface of the penetration portion on the side of the second breaker material opposite the elastic member and the outer surface of the penetrating member. [Effects of the Invention]

[0007] According to the seal structure of the present disclosure, it is possible to improve the sealing performance. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing the seal structure of this embodiment. [Figure 2] FIG. 2 is a bottom view showing the seal structure. DETAILED DESCRIPTION OF THE INVENTION

[0009] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. Note that the present disclosure is not limited to these embodiments, and when there are multiple embodiments, the present disclosure also includes configurations that combine the embodiments. Furthermore, the components in the embodiments include those that can be easily imagined by a person skilled in the art, those that are substantially identical, and those that are within the so-called equivalent range.

[0010] [Configuration of the embodiment] FIG. 1 is a cross-sectional view showing the seal structure of this embodiment, and FIG. 2 is a bottom view showing the seal structure.

[0011] As shown in Figures 1 and 2, a building 10 as a structure has a wall 11 extending horizontally, and a penetration 12 penetrating the wall 11 in the vertical direction. The penetration 12 has a center O. The wall 11 is the floor or ceiling of the structure. The wall 11 has a lid 21 having a circular hole 21a and a skin plate 22 having a circular hole 22a. The lid 21 is made of metal, constitutes the main body of the wall 11, and has the circular hole 21a formed at a predetermined position. The skin plate 22 is ring-shaped and made of metal, and has the circular hole 22a formed in its center. The skin plate 22 is placed on the top surface of the lid 21 and fixed by welding or the like.

[0012] A sleeve 23 is disposed above the wall portion 11. The sleeve 23 is a cylindrical tube and has a through hole 23a. The centers of the sleeve 23 coincide at center O. The inner diameter of the through hole 23a of the sleeve 23 is larger than the inner diameter of the circular hole 21a of the lid portion 21 and the inner diameter of the circular hole 22a of the skin plate 22. The through portion 12 is composed of the circular hole 21a of the lid portion 21, the circular hole 22a of the skin plate 22, and the through hole 23a of the sleeve 23.

[0013] The through portion 12 is arranged so that a pipe 13 serving as a penetrating member is inserted therethrough. The outer diameter of the pipe 13 is smaller than the inner diameter of the through portion 12, and the through hole 23a of the sleeve 23 constituting the through portion 12 is a hole with a circular cross section whose inner diameter is set based on design specifications such as the outer diameter dimension of the pipe 13, and is formed along the vertical direction. In this embodiment, a lower space A below the wall portion 11 is at a lower pressure than an upper space B above the wall portion 11. Specifically, the lower space A is at negative pressure, and the upper space B is at atmospheric pressure.

[0014] In the seal structure of this embodiment, a penetration 12 is provided in a wall 11 of a building 10, a pipe 13 is inserted into the penetration 12, and a seal 30 is arranged to connect the penetration 12 and the pipe 13. The seal 30 is arranged to fill the space between the penetration 12 and the pipe 13.

[0015] The seal portion 30 constituting the seal structure includes a closing plate (reinforcing plate) 31, a first breaker material 32, a first elastic member 33, a second breaker material , a sealing material 35, and a second elastic member .

[0016] The closure plate 31 has a ring shape and is disposed between the skin plate 22 and the sleeve 23. The closure plate 31 is made of metal and is disposed on the upper surface of the skin plate 22, with the outer periphery of the closure plate 31 fixed to the skin plate 22 by welding or the like. The end of the sleeve 23 is fixed to the upper surface of the closure plate 31 by welding or the like. The closure plate 31 has a circular hole 31a formed in its center, and the centers of the circular holes 31a coincide with the center O. The inner diameter of the circular hole 31a of the closure plate 31 is smaller than the inner diameter of the circular hole 22a of the skin plate 22. Furthermore, the inner diameter of the circular hole 31a of the closure plate 31 is slightly larger than the outer diameter of the pipe 13. Therefore, a minute gap S is secured between the inner periphery of the circular hole 31a and the outer periphery of the pipe 13.

[0017] The first breaker material 32 is disposed on the upper surface of the closing plate 31. The first breaker material 32 is ring-shaped with a predetermined thickness and is disposed between the inner peripheral surface of the through hole 23a of the sleeve 23 and the outer peripheral surface of the pipe 13. The first breaker material 32 is formed, for example, from foamed polyethylene. Specifically, the first breaker material 32 is a disk-shaped member having a circular hole formed in the center through which the pipe 13 is inserted. The circular hole through which the pipe 13 is inserted has an inner diameter that is approximately the same as the outer diameter of the pipe 13 or slightly larger than the outer diameter of the pipe 13. Furthermore, the outer diameter of the first breaker material 32 is smaller than the inner diameter of the through hole 23a of the sleeve 23.

[0018] The first elastic member 33 is disposed on the upper surfaces of the closing plate 31 and the first breaker material 32. The first elastic member 33 is ring-shaped with a predetermined thickness and disposed between the inner peripheral surface of the through hole 23a of the sleeve 23 and the outer peripheral surface of the pipe 13. The first elastic member 33 functions as a watertight sealing member and is made of a member having high elasticity and high adhesion. The first elastic member 33 is formed, for example, from a silicone sealant. Specifically, the first elastic member 33 is a disk-shaped member having a circular hole formed in the center through which the pipe 13 is inserted. The circular hole through which the pipe 13 is inserted has an inner diameter approximately equal to the outer diameter of the pipe 13. The outer diameter of the first elastic member 33 is also approximately equal to the inner diameter of the through hole 23a of the sleeve 23.

[0019] Furthermore, the first elastic member 33 has an extension 33a on its outer periphery. The extension 33a is provided on the lower surface side of the outer periphery of the first elastic member 33. The extension 33a is ring-shaped. The first elastic member 33 is disposed on the upper surface of the first breaker material 32, and the extension 33a is disposed so as to extend between the inner circumferential surface of the through hole 23a of the sleeve 23 and the outer periphery of the first breaker material 32. Therefore, the first elastic member 33 is fixed so that its lower surface contacts the upper surface of the first breaker material 32, its outer periphery is in close contact with the through hole 23a of the sleeve 23, and its inner periphery is in close contact with the outer periphery of the pipe 13. Furthermore, the extension 33a of the first elastic member 33 is positioned between the through hole 23a of the sleeve 23 and the outer periphery of the first breaker material 32, and is in close contact with the upper surface of the closing plate 31.

[0020] The second breaker material 34 is disposed on the upper surface of the first elastic member 33. The second breaker material 34 is ring-shaped with a predetermined thickness and is disposed between the inner circumferential surface of the through hole 23a of the sleeve 23 and the outer circumferential surface of the pipe 13. The second breaker material 34 is formed, for example, from foamed polyethylene. Specifically, the second breaker material 34 is a disk-shaped member having a circular hole formed in the center through which the pipe 13 is inserted. The circular hole through which the pipe 13 is inserted has an inner diameter that is approximately the same as the outer diameter of the pipe 13 or slightly larger than the outer diameter of the pipe 13. Furthermore, the outer diameter of the second breaker material 34 is approximately the same as the inner diameter of the through hole 23a of the sleeve 23 or slightly smaller than the inner diameter of the through hole 23a of the sleeve 23.

[0021] That is, at the seal portion 30, the first elastic member 33 has its outer peripheral portion fixed in close contact with the through hole 23a of the sleeve 23, and its inner peripheral portion fixed in close contact with the outer peripheral surface of the pipe 13. The first breaker material 32 is disposed between the through hole 23a of the sleeve 23 on one side (lower side) of the first elastic member 33 and the pipe 13, and is in contact with the first elastic member 33 so as to be relatively movable. The second breaker material 34 is disposed between the through hole 23a of the sleeve 23 on the other side (upper side) of the first elastic member 33 and the pipe 13, and is in contact with the first elastic member 33 so as to be relatively movable. The closure plate 31 is disposed on the opposite side (lower side) of the first breaker material 32 from the first elastic member 33.

[0022] The sealant 35 is disposed on the upper surface of the second breaker member 34. The sealant 35 is a heat-resistant seal formed, for example, from a polyurethane-based flame-retardant material. The sealant 35 is ring-shaped with a predetermined thickness and is disposed between the inner circumferential surface of the through-hole 23a of the sleeve 23 and the outer circumferential surface of the pipe 13. The sealant 35 is a disc-shaped member with a circular hole formed in the center through which the pipe 13 is inserted. The circular hole through which the pipe 13 is inserted has an inner diameter that is approximately the same as the outer diameter of the pipe 13 or slightly larger than the outer diameter of the pipe 13. The outer diameter of the sealant 35 is approximately the same as the inner diameter of the through-hole 23a of the sleeve 23 or slightly smaller than the inner diameter of the through-hole 23a of the sleeve 23.

[0023] The second stretchable member 36 is disposed on the upper surface of the sealing material 35. The second stretchable member 36 is ring-shaped with a predetermined thickness and is disposed between the inner circumferential surface of the through hole 23a of the sleeve 23 and the outer circumferential surface of the piping 13. The second stretchable member 36 functions as a watertight sealing member and is made of a member having high stretchability and high adhesion. The second stretchable member 36 is formed, for example, from a silicone sealant. Specifically, the second stretchable member 36 is a disc-shaped member having a circular hole formed in the center through which the piping 13 is inserted. The circular hole through which the piping 13 is inserted has an inner diameter approximately equal to the outer diameter of the piping 13. The outer diameter of the second stretchable member 36 is also approximately equal to the inner diameter of the through hole 23a of the sleeve 23.

[0024] Therefore, the second elastic member 36 is fixed so that its lower surface is in close contact with the upper surface of the sealing material 35, its outer periphery is in close contact with the through hole 23a of the sleeve 23, and its inner periphery is in close contact with the outer periphery of the piping 13.

[0025] As a result, the seal 30 is configured by arranging a closure plate 31, a first breaker material 32, a first elastic member 33, a second breaker material 34, a seal material 35, and a second elastic member 36 in order from the bottom (lower space portion A) to the top (upper space portion B) in the vertical direction.

[0026] The closing plate 31, the first breaker material 32, the second breaker material 34, and the sealing material 35 are each made up of a plurality of divided members in the circumferential direction. The first elastic member 33 and the second elastic member 36 are formed by filling with a fluid and then solidifying it.

[0027] <Method of manufacturing seal structure> The building 10 has a wall 11 extending in the horizontal direction, a through-hole 12 extending in the vertical direction provided in the wall 11, and a pipe 13 extending in the vertical direction being inserted through the through-hole 12. The seal 30 is installed between the through-hole 12 and the pipe 13, both of which are arranged in the vertical direction, to connect them.

[0028] The skin plate 22 is fixed to the upper surface of the existing lid portion 21, the closure plate 31 is fixed to the upper surface of the skin plate 22, and the sleeve 23 is fixed to the upper surface of the closure plate 31. First, the first breaker material 32 is attached to the upper surface of the closure plate 31. Next, a silicone sealant fluid is filled into the upper surface of the first breaker material 32, and the first elastic member 33 is disposed by solidifying the fluid. Next, the second breaker material 34 is disposed on the upper surface of the first elastic member 33. Then, the sealing material 35 is disposed on the upper surface of the second breaker material 34. After blocking, the silicone sealant fluid is filled into the upper surface of the sealing material 35, and the second elastic member 36 is disposed by solidifying the fluid.

[0029] When an earthquake occurs and wall portion 11 and piping 13 move relative to each other in the horizontal direction, the relative position between the inner circumferential surface of through hole 23a of sleeve 23 and the outer circumferential surface of piping 13 fluctuates. At this time, sealing material 35 is displaced relatively in the horizontal direction, and gaps are generated between sealing material 35 and the inner circumferential surface of through hole 23a of sleeve 23 and the outer circumferential surface of piping 13. Meanwhile, the outer circumferential portion of first elastic member 33 is in close contact with the inner circumferential surface of through hole 23a of sleeve 23, and the inner circumferential portion is in close contact with the outer circumferential surface of piping 13, so that first elastic member 33 is displaced so as to stretch in the horizontal direction. This suppresses the generation of gaps between the inner circumferential surface of through hole 23a of sleeve 23 and first elastic member 33, and between the outer circumferential surface of piping 13 and first elastic member 33, ensuring high sealing performance. At this time, one flat surface of the first elastic member 33 is in contact with the first breaker material 32 and the other flat surface is in contact with the second breaker material 34, but since the first elastic member 33, the first breaker material 32, and the second breaker material 34 are capable of relative deformation, the first elastic member 33 can stretch appropriately while being supported by the first breaker material 32 and the second breaker material 34.

[0030] [Effects of this embodiment] The sealing structure of the first aspect is a sealing structure having a penetration portion 12 provided in a wall portion 11 of a structure, and having a sealing portion 30 connecting the wall portion 11 and a pipe (penetrating member) 13 inserted into the penetration portion 12, and the sealing portion 30 comprises a first elastic member 33 arranged between the inner surface of the penetration portion 12 and the outer surface of the pipe 13 and forming a ring shape, a first breaker material 32 arranged between the inner surface of the penetration portion 12 on one side of the first elastic member 33 and the outer surface of the pipe 13, a second breaker material 34 arranged between the inner surface of the penetration portion 12 on the other side of the first elastic member 33 and the outer surface of the pipe 13, and a sealing material 35 arranged between the inner surface of the penetration portion 12 on one side of the second breaker material 34 and the outer surface of the pipe 13.

[0031] According to the seal structure of the first aspect, when the wall portion 11 and the pipe 13 move relative to each other in the horizontal direction, the outer periphery of the first elastic member 33 comes into close contact with the inner periphery of the through hole 23a of the sleeve 23, and the inner periphery remains in close contact with the outer periphery of the pipe 13, while being supported by the first breaker material 32 and the second breaker material 34 and undergoing relative displacement, the first elastic member 33 can be extended appropriately. Therefore, the sealing performance in the space between the through portion 12 of the wall portion 11 and the pipe 13 can be improved.

[0032] The seal structure according to the second aspect is the seal structure according to the first aspect, further comprising: an outer diameter of the first breaker material 32 that is smaller than the inner diameter of the through-hole 12, an inner circumferential portion that is fixed to the outer circumferential surface of the pipe 13; and an extension portion 33a that is provided on the outer circumferential portion of the first elastic member 33 and that extends between the outer circumferential portion of the first breaker material 32 and the inner circumferential surface of the through-hole 12. As a result, the extension portion 33a of the first elastic member 33 comes into close contact with the inner circumferential surface of the through-hole 12 on the outer circumferential portion side of the first breaker material 32, and the sealing area between the first elastic member 33 and the through-hole 12 in the vertical direction is expanded, thereby improving sealing performance.

[0033] The seal structure according to the third aspect is the seal structure according to the first or second aspect, and further includes a sleeve 23 that forms the through-hole 12 in the wall 11, and a ring-shaped closure plate (reinforcing plate) 31 that is disposed on the opposite side of the first breaker material 32 from the first elastic member 33, and the closure plate 31 is fixed to the sleeve 23 and has an inner diameter that is larger than the outer diameter of the pipe 13. This allows the closure plate 31 to support the first breaker material 32 and other components, making it possible to suppress movement toward the lower space A.

[0034] The seal structure according to the fourth aspect is the seal structure according to the third aspect, further comprising: the penetration portion 12 and the pipe 13 arranged along the vertical direction; and the closure plate 31, the first breaker material 32, the first elastic member 33, the second breaker material 34, and the seal material 35 arranged from bottom to top in the vertical direction. This allows the closure plate 31 to appropriately support the first breaker material 32, the first elastic member 33, the second breaker material 34, and the seal material 35.

[0035] The seal structure according to the fifth aspect is the seal structure according to the third or fourth aspect, and furthermore, the lower space A below the closure plate 31 has a lower pressure than the upper space B above the seal material 35. This allows the closure plate 31 to appropriately support the first breaker material 32, the first elastic member 33, the second breaker material 34, and the seal material 35.

[0036] The seal structure according to the sixth aspect is the seal structure according to any one of the third to fifth aspects, further comprising a sleeve 23 disposed on the upper part of the wall 11, a through-hole 12 vertically penetrating the wall 11 and the sleeve 23, and a closure plate 31 fixed to the wall 11 and the sleeve 23. This allows the first breaker material 32, first elastic member 33, second breaker material 34, and seal material 35 that constitute the seal portion 30 to be appropriately positioned inside the sleeve 23.

[0037] In the above-described embodiment, the sealing material 35 is provided with the closure plate 31, the first breaker material 32, the first elastic member 33, and the second breaker material 34 on the negative pressure side of the lower space portion A, but the closure plate 31, the first breaker material 32, the first elastic member 33, and the second breaker material 34 may also be provided on the high pressure side of the upper space portion B.

[0038] In the above-described embodiment, the through-hole 12 has a circular cross-sectional shape and the pipe 13 has a cylindrical shape, but the shapes are not limited to these. For example, the shapes of the through-hole 12 and the pipe 13 may be elliptical or polygonal. Furthermore, the penetrating member is not limited to a cylindrical shape and may be columnar.

[0039] In the above-described embodiment, the wall 11 is a floor or ceiling extending horizontally, the through-hole 12 penetrates the wall 11 vertically, and the pipe 13 is inserted through the through-hole 12 vertically, but the present invention is not limited to this configuration. For example, the wall may be a vertical wall extending vertically, the through-hole penetrates the vertical wall horizontally, and the pipe may be inserted through the through-hole horizontally. [Explanation of symbols]

[0040] 10 Building (Structure) 11 Wall 12 Penetration 13 Piping (penetrating member) 21 Lid 22 Skin Plate 23 Sleeve 30 Seal part 31 Closure plate (reinforcement plate) 32 First breaker material 33 First elastic member 34 Second breaker material 35 Sealing material 36 Second elastic member

Claims

1. A seal structure having a through-hole provided in a wall of a structure and a seal portion connecting the wall and a penetrating member inserted into the through-hole, The sealing portion is a ring-shaped elastic member disposed between the inner circumferential surface of the penetrating portion and the outer circumferential surface of the penetrating member; a first breaker member disposed between an inner peripheral surface of the through-hole portion on one side of the elastic member and an outer peripheral surface of the through-hole member; a second breaker member disposed between the inner circumferential surface of the penetrating portion on the other side of the elastic member and the outer circumferential surface of the penetrating member; a sealing material disposed between an inner circumferential surface of the penetrating portion on the opposite side of the elastic member in the second breaker material and an outer circumferential surface of the penetrating member; A seal structure comprising:

2. the first breaker material has an outer diameter smaller than the inner diameter of the penetrating portion, and an inner peripheral portion is fixed to the outer peripheral surface of the penetrating member, and the elastic member has an extension portion on its outer peripheral portion that extends between the outer peripheral portion of the first breaker material and the inner peripheral surface of the penetrating portion; The seal structure according to claim 1 .

3. a sleeve is provided on the wall portion to form the through-hole, and a ring-shaped reinforcing plate is arranged on the opposite side of the first breaker material from the elastic member, the reinforcing plate being fixed to the sleeve and having an inner diameter larger than an outer diameter of the through-hole member; The seal structure according to claim 1 .

4. The through portion and the through member are arranged along the vertical direction, and the reinforcing plate, the first breaker material, the elastic member, the second breaker material, and the sealing material are arranged from below to above in the vertical direction. The seal structure according to claim 3 .

5. a lower space portion below the reinforcing plate is at a lower pressure than an upper space portion above the sealing material; The seal structure according to claim 4.

6. The sleeve is disposed on an upper portion of the wall portion, the through-hole is provided to penetrate the wall portion and the sleeve in a vertical direction, and the reinforcing plate is fixed to the wall portion and the sleeve. The seal structure according to any one of claims 3 to 5.

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