JP2008064320A - Conduit and its tube wall structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To offer a compartment penetrating coupling excellent in installation work performance and capable of blocking a through hole quickly. <P>SOLUTION: A compartment penetrating coupling 10 is a coupling made by embedding a thermal expansion material ring 20 in a pipe wall of a coupling body 12. The thermal expansion material ring 20 is integrated within the coupling body 12, and another component is not needed at the time of construction. Therefore, the coupling 10 is excellent in installation work performance. If the thermal expansion material ring 20 is embedded in a pipe wall of the coupling body 12, the thickness of the pipe wall inside the thermal expansion material can be reduced, and the through hole can be blocked quickly. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  This invention relates to a fire compartment penetrating joint, in particular, for example, joining pipes in a through hole of a fire compartment and preventing flames and smoke from entering the opposite side of the compartment during a fire. The present invention relates to a fireproof compartment penetration joint.

An example of a conventional fire prevention compartment penetrating member is disclosed in Patent Document 1. The fire prevention section penetrating member of Patent Document 1 is attached to the outside of the pipe outside the through hole, and is inserted on the through hole of the fire prevention section while being shifted on the pipe after the attachment. When a fire breaks out, the thermal expansion rubber of the penetrating member expands between the pipe and the through hole. The piping is crushed and the through hole is closed.
JP 2002-250479 A [F16L 5/00, A62C 3/16]

  In the prior art of Patent Document 1, a fireproof section penetrating member is prepared separately from the pipe, and the penetrating member must be wound around the outside of the pipe and then inserted into the through hole provided in the fireproof section, so that the workability is poor. .

  Since the thermal expansion material expands during a fire and crushes the piping, the gap in the piping is closed, so the time until the thermal expansion material crushes the piping affects the thickness of the pipe wall. That is, when the thickness of the pipe wall of the pipe is large, the resistance of the pipe wall when the thermal expansion material expands is large, and the pipe wall is not easily softened by heat, and it takes time for the thermal expansion material to crush the pipe. End up. In such a case, the pressure of the thermal expansion material may be increased in order to quickly crush the pipe, but then the amount of the thermal expansion material must be increased, the member becomes thicker, and the workability is further deteriorated. End up.

  Therefore, the main object of the present invention is to provide a fire-blocking through-joint having excellent workability and capable of quickly closing a through-hole.

  The invention of claim 1 is a fire prevention compartment pipe joint that penetrates a fire prevention compartment by a through hole and joins pipes, and includes a joint main body installed in the through hole, and a thermal expansion material embedded in the joint main body. It is a fire prevention compartment penetration joint.

  In the first aspect of the invention, for example, after the thermal expansion material is set in advance in the joint mold, the thermal expansion material is injected into the joint body by a method such as injecting resin into the joint mold. Embed in.

  When a fire occurs, the thermal expansion member crushes the joint body to close the through hole, that is, the pipe line. At this time, since the thermal expansion material is embedded in the joint main body, the thickness of the joint main body inside the thermal expansion material is reduced, the force of the thermal expansion material crushing the pipe wall of the joint main body is small, and the pipe wall Is easily softened by heat. For this reason, the pipe line which penetrates a fire prevention division can be obstruct | occluded rapidly.

According to this invention, since the thermal expansion material is embedded in the joint body, it is excellent in workability compared with the case where another member is attached to the outside of the pipe line as in Patent Document 1, and the thermal expansion material is not much. The above-mentioned object, other objects, features, and advantages of the present invention can be quickly closed without increasing the number of objects. The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings. Let's go.

  The fire compartment penetrating joint 10 according to one embodiment of the present invention shown in FIG. 1 is a socket type joint. The joint body 12 is made of a synthetic resin such as vinyl chloride, polyethylene, polybutene, polypropylene or nylon.

  The shape of the joint body 12 is cylindrical, the length L1 is, for example, 150 mm, and the inner diameter φ1 is equal to the inner diameter φ2 of the pipe 16 inserted into the joint 10, as shown in FIG. 2, for example, 100 mm. Thin receptacles 18 are provided at both ends, and two thermal expansion material rings 20 are embedded in the central tube wall where the receptacles 18 are not provided. These positions are positions corresponding to both ends of the through hole 22 (FIG. 2) provided in the wall 14, for example.

  The thickness W1 of the pipe wall of the joint body 12 inside the thermal expansion material ring 20 is the minimum necessary for the use of the pipe. For example, in the case of a drain pipe, it is set to a minimum thickness in consideration of erosion due to sewage, wear during pipe cleaning, and the like, for example, 2 mm. The thickness W2 of the tube wall outside the ring 20 is substantially equal to the thickness t of the tube wall of the tube 16 in order to give strength to the tube wall of the fireproof penetration joint 10, for example, 7.1 mm. The thickness W3 of the thermal expansion material ring 20 is in balance with its length. It is determined based on the results of the test.

  The fire prevention compartment penetration joint 10 is formed by injection molding. For example, the thermally expanded material ring 20 is prepared in advance by pouring a molten thermally expanded material into a cylindrical mold. This ring 20 is set in a joint body mold, and molten vinyl chloride resin is poured into the ring body. Then, the thermal expansion material ring 20 is embedded in the joint body 12.

  As another manufacturing method, as shown in FIG. 3, the joint body 12 provided with the groove 24 for the thermal expansion material ring 20 and the groove 28 for the inner layer ring 26 is formed by injection molding. The thermal expansion material ring 20 and the inner layer ring 26 prepared in advance in the grooves 24 and 30 are fitted in order. The thermal expansion material ring 20 is provided in the joint body 12 and the inner layer ring 26.

  This fireproof section through joint 10 is inserted into a through hole 22 provided in the fireproof section wall 14, and the pipes 16 are fitted and bonded into the receiving ports 18 at both ends thereof, thereby forming a pipe line 30. For example, when a fire occurs on the right side of the wall 14 in FIG. 2, as shown in FIG. 4, the heat expansion material ring 20 on the right side of the fire-protection section through joint 10 expands due to the heat to block the pipe line 30, Insulating layer 32 is formed in 14. For this reason, the wall 14 provided with the fire-protection section penetration joint 10 serves as a fire-protection section, and prevents flames, smoke, and the like from passing through the conduit 30 and spreading outside the wall 14.

  Thus, if the thermal expansion material ring 20 is previously embedded in the joint main body 12, the fireproof compartment penetration joint 10 can be inserted into the through hole 22 as it is. For this reason, the trouble of winding another member around the pipeline 30 at the time of construction is unnecessary, and it is excellent in workability.

If the thickness of the tube wall inside the thermally expandable material ring 20 is minimized, the resistance of the tube wall when the thermally expandable material ring 20 expands is small and the tube wall is easily softened by heat. The thermal expansion material ring 20 can quickly close the through-hole 22 (the pipe line 30). Although the two thermal expansion material rings 20 are provided in the joint body 12, the length of the central portion of the joint body 12 is as follows. One or three or more rings may be used at the center of L2 at an appropriate interval.

Although the thermal expansion material ring 20 is embedded in the joint main body 12 and the main body wall is left inside the ring 20, the inner main body wall (thickness of W1 in FIG. 1) may be omitted. That is, the ring 20 can be embedded inside the joint body 12 so that the thermal expansion material ring 20 is exposed on the inner surface of the joint body 12. If it does in this way, since the thermally expansible material is exposed, it will be easy to expand | swell and the pipe line 30 can be interrupted | blocked more rapidly. However, in this case, it is necessary to provide the thermal expansion material ring 20 with necessary performance as a drain pipe such as water resistance and chemical resistance. Even if the necessary performance of the fireproof compartment penetration joint 10 is insufficient, the thermal expansion material ring 20 is coated with a resin such as epoxy, urethane and fluorine to ensure the required performance. Also good.

  The fire compartment penetrating joint 10 according to another embodiment of the present invention shown in FIG. 5 is substantially the same as the fire compartment penetrating joint 10 shown in FIG. 1 except that one thermal expansion material ring 20 is embedded in the joint body 12. Yes. The fire prevention compartment penetration joint 10 is fitted into the through hole 22 of the fire prevention compartment floor 34, and the pipes 16 are respectively inserted into the receiving ports 18 at both ends thereof and bonded to form the pipe line 30. The other parts are the same as the fireproof compartment penetration joint 10 shown in FIG.

  For example, when a fire occurs on the lower side of the floor 34 in FIG. 5 by providing the fire prevention compartment penetration joint 10 in the fire prevention compartment floor 34, the heat expansion material ring 20 of the fire prevention compartment penetration joint 10 expands due to the heat. Thus, the pipe 30 is blocked, and flames and smoke are prevented from passing through the pipe 30 and going up to the upper side of the floor 34.

  In addition, although the number of the thermal expansion material rings 20 is one, you may provide two or more at intervals.

It is sectional drawing in the line which passes along the pipe axis which shows the fire prevention division penetration joint of one Example of this invention. It is sectional drawing which shows the state which inserted the fire prevention division penetration joint of FIG. 1 Example in the through-hole of the wall. It is sectional drawing which shows an example of the manufacturing method of the fire prevention division penetration joint of FIG. 1 Example. FIG. 3 is an illustrative view showing a state where a through hole is closed in the embodiment in FIG. 2; It is sectional drawing which shows the state which inserted the fire prevention division penetration joint of FIG. 1 Example in the through-hole of the floor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fireproof division through joint 12 ... Joint main body 16 ... Pipe 20 ... Thermal expansion material ring

Claims (1)

A fire-compartment pipe joint that penetrates a fire-compartment through a through hole and joins pipes together,
A fire prevention compartment penetration joint, comprising: a joint body installed in the through hole; and a thermal expansion material embedded in the joint body.

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