JPS5915814Y2 - Sealing cover device for wall penetrating piping - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a sealing cover device for a wall-penetrating piping section.

In particular, this invention is based on the Utility Model Application No. 54, which was previously filed by the present applicant.
This was done in order to improve the device described in JP-A-107223.

The above-mentioned sealing cover device for the wall-penetrating piping section is composed of a hook member and a loop member that can be detached from each other from the inner end side to the outer end side of the overlapping width of both ends of the sealing sheet that can be bent into a cylindrical shape. A latching body, a sealing adhesive, and a double-sided adhesive tape are formed in sequence, and when the overlapping parts of both ends of the sheet are adhered and sealed with the sealing adhesive, both sides of the adhesive part are Temporarily fix the latching body and double-sided adhesive tape until the adhesive hardens and creates adhesive strength.
It is designed to hold the sheet in a cylindrical shape, but among the overlapping parts of the curved cylindrical sheets, there is a member in the middle of the overlapped parts excluding the overlapping part of both cylinder openings. Since there is no adhesive, it is not possible to crimp properly during temporary fixing.

Particularly in narrow spaces where the spacing between sealing sheets is shorter than the width of the sheet due to the shape of the piping, the presence of piping supports, or flow meters connected to the pipe section, it is difficult to install sealing sheets.
Curved cylindrical sheets are compressed and distorted in the direction of the cylinder axis (width direction of the sheets) and stacked together, but when stacked in such a state, the temporary fixing described above is likely to come off, and the adhesive Adhesion using adhesives may also be insufficient and peeling may occur.

In view of the above-mentioned drawbacks of the prior art, this idea has been developed to facilitate the installation of sealing sheets, regardless of the length of the interval, and to prevent leakage of gases, liquids, etc. from wall-penetrating piping. The object of the present invention is to provide a sealing cover device that can effectively block the

The sealing cover device for wall-penetrating piping based on this idea is
A sealing sheet made of a woven fabric made of inorganic or organic fibers imprinted with synthetic rubber is curved into a cylindrical shape, its ends are overlapped and tied, and both ends of the cylindrical sheet are held together. In a sealing cover device for a wall penetrating piping section, both ends of the sealing sheet are overlapped and bonded with an adhesive in a clasped shape, and are bound with a stable or thread, and the overlapping It is characterized by a configuration in which both cylindrical portions are tightened while the mating portion is folded down.

Hereinafter, this invention will be explained in detail based on the drawings showing an example of its implementation.

1 to 3, 1 is a sealing sheet in the sealing cover device, and this sheet 1 is made of a material that is impermeable to gas or liquid and is flexible, such as a woven fabric made of inorganic fiber or organic fiber. Synthetic rubber imprinted on cloth,
Alternatively, it is formed by pasting aluminum foil on the woven fabric, and when both ends are brought together and curved, it becomes a conical cylinder.

The sealing sheet 1 has overlapping portions 1a at both ends thereof,
lb are overlapped in the shape of palms together with a silicone rubber adhesive 2 and stapled at several places by a stable 3 to form a joint 4, and with the joint 4 folded to one side, The receiver is designed to be attached to the section.

The sealing cover device constructed as described above is used in the conditions shown in FIGS. 4 and 5.

Figure 4 shows that when the sealing sheets are installed at wide intervals,
The figure shows the case where sealing sheets are installed at narrow intervals. 5 is the wall of the building, 6 is the pipe, 6' is the branch pipe, 7 is the pipe through hole, 8 is the mantle, 9, 10 is a buffer gasket, 1
1 is a band for tightening, 12 is a bolt, and the sheet 1 is passed around the gasket 9 wrapped around the mantle 8 and the gasket 9 wrapped around the tube 6, and then wrapped in a cylindrical shape, as described above. Then, the overlapped parts 1a and lb are overlapped in a clasped shape with an adhesive 2, and further stapled with a stable 3 to form a joint 4, and then the joined parts 1a and lb are joined together using an adhesive 2.
By tilting the connecting portion 4 consisting of b to one side, wrapping the gasket 10, applying the band 11, and tightening with the bolt 12, the cylindrically curved sheet is fixedly attached to the receiving portion.

However, in the above-mentioned sealing cover device, since the sealing sheet 1 is overlapped at both ends, as in the conventional device described above, the diameter dimension can be adjusted when it is bent into a cylindrical shape. Not only is it easy, but it also has the advantage of being able to hold the sheet in a cylindrical shape with the stable 3 until the adhesive 2 of the joint 4, which performs the sealing function, hardens and develops adhesive strength. In addition, it has the following advantages.

That is, the overlapping portions 1a and lb of the sealing sheet 1
is designed to be joined by overlapping the sheets in a cylindrical shape, so when the sheet is bent into a cylindrical shape, the receiver can hold the sheet from the outside even in the intermediate overlapping part where there is no member, excluding the tube openings at both ends. This operation is easy because the sheets can be strongly crimped and stapled using the stable 3 at the same time as this crimping.

In particular, as shown in Fig. 5, the sealing sheets 1 are installed at narrow intervals, and when the sheets 1 are compressed and distorted in the direction of the cylinder axis (width direction of the sheet), it is difficult to overlap them. By simply holding the portions 1a and 1b with their palms together along the distorted shape with their hands or a jig, bonding with the adhesive 2 and temporary fixing with the stable 3 can be done very easily.

Furthermore, the following effects are particularly effective on the assumption that the above-mentioned reliable temporary adhesion is achieved.

First, regarding the joint portion 4, by appropriately changing the width of the bonded portion of the adhesive 2, it is possible to freely adjust the diameter dimension when the sealing sheet 1 is bent into a cylindrical shape.

In other words, even when wrapped around the outer periphery of a heat insulating material whose pipe diameter varies widely, it is possible to make it follow the pipe diameter without changing the thickness of the cushioning material installed inside the sealing sheet 1. , the so-called tolerance range becomes larger.

In addition, since the temporary adhesion is done by the stable 3, it is easy to join, and it is easy to temporarily hold the cylindrical shape of the sealing sheet 1, which simplifies the adhesion with the silicone rubber adhesive 2. It is possible to prevent the adhesive from peeling off before the adhesive hardens, allowing the adhesive to perform its original adhesive function.

As for the adhesive 2 for the bonding part 4, any well-known adhesive can be used as appropriate. However, in the case of a nuclear reactor containment vessel, one that has appropriate flexibility, heat resistance, and weather resistance after curing, and has radiation resistance. Taking this into consideration, silicone rubber type materials are most suitable.

Further, in the above embodiment, the binding portion 4 is bound by the stable 3, but it may be bound by thread.

As described above, according to this invention, a sealing sheet is curved into a cylindrical shape, its both ends are overlapped and tied, and both cylindrical parts of the cylindrical sheet are tightened to the receiver part. In the sealing cover device for the wall-penetrating piping section, the sealing sheet has overlapping portions at both ends thereof overlapped in the shape of palms together, and a joining portion is formed at the overlapping portion. Even in places where there is no part to catch the sheets, it is possible to reliably join the sheet ends by overlapping them.Especially when installing seams 1~, the spacing is narrow and the sheets are compressed and distorted. ,
The joining operation by overlapping the sheet ends can be easily performed.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a sealing sheet in a sealing cover device for a wall-penetrating piping section showing an embodiment of this invention, Fig. 2 is a perspective view showing the overlapping state of sheet ends, and Fig. 3 is FIGS. 4 and 5 are an enlarged cross-sectional view of the overlapping portion of the sheet ends, and are cross-sectional views showing the use state of the cover device, respectively. DESCRIPTION OF SYMBOLS 1... Sealing sheet, la, lb... Overlapping part, 2... Adhesive, 3... Stable, 4... Joining part, 5... Wall body, 6... Piping, 6a... Branch pipe, 7... Piping through hole, 8... Mantle tube, 9, 10...
Buffer gasket, 11...Tighten with band, 12...
bolt.

Claims (1)

[Scope of utility model registration request] A sealing sheet made of a woven fabric made of inorganic or organic fibers imprinted with synthetic rubber is curved into a cylindrical shape, its ends are overlapped and tied, and both ends of the cylindrical sheet are held together. In the sealing cover device for a wall penetrating piping section, which is configured by tightening the sealing sheet, both ends of the sealing sheet are overlapped and bonded together in a clasped shape with an adhesive, and are bound with staples or thread, and the overlapping is further performed. 1. A sealing cover device for a wall-penetrating piping portion, characterized in that both cylindrical portions are tightened when the portion is folded down.