JPH03181696A - Fire-preventive work tube of coolant tube penetrating fire-preventive section - Google Patents

Abstract

PURPOSE:To realize a high speed fitting work by fitting and fixing a fireproof rock wool forming material to an iron pipe, with hollow tube parts remaining and fitting and combining a pair of separate circular soft piece bodies with the size to fit to the inner size of the hollow tube parts, to the hollow tube parts. CONSTITUTION:To the inside of an iron pipe 1 larger S1 than a specific size S, a fireproof rock wool plastic material 6 shorter than the iron pipe 1, in which small round holes 3 and 3' responding to penetrating coolant tubes R and R' of an air-conditioning device are penetrated, is fitted and fixed remaining hollow tube parts 7 and 7' at both ends of the iron pipe 1. To the hollow tube parts 7 and 7', a pair of circular soft piece bodies 12 and 12' are fitted. In the circular soft piece bodies 12 and 12', cut holes 10 and 10', and, 11 and 11' with the diameter to fit closely to the ends of warmth keeping tubes 8 and 8' which cover the coolant tubes R and R' by opening and closing in forked directions are provided. As a result, transport, handling, and execution of work are easy, and there is no fear of generating any breakage.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly applies to concrete fire protection divisions in construction.
This invention relates to a fire prevention construction pipe in which a refrigerant pipe of an air conditioner is passed through an iron pipe under a 1iU fire condition.

(Conventional technology) Conventionally, the construction of piping the refrigerant pipes of an air conditioner through a hollow iron pipe installed in a hole in a fireproof compartment was done by inserting a split cylinder into a pair of refrigerant pipes.
．． The outer periphery of the fitting is wrapped with a non-combustible band to form a winding layer, the winding layer is inserted into the iron pipe, the gap between the iron pipe and the winding layer is filled with a non-flammable backing material, and the gap between 41 and the piping is closed. This is a labor-intensive construction process that requires highly skilled techniques to seal the boundary using complicated and troublesome work to prevent condensation.
It takes a lot of time and effort for two companies: a plumbing contractor and a insulation contractor.
To eliminate this very costly drawback, plumber l! It is possible for a contractor to penetrate the refrigerant pipe into the fire protection compartment, and with its simple composition, it is possible to easily, reliably, and safely prevent condensation on the refrigerant pipe.This fire protection construction is highly demanded due to its excellent workability and economic efficiency. As a prior art, the inventor of the present application has invented and developed the pipe as Japanese Patent Application Nos. 1-239017 and 239018, and has filed a patent application.

In particular, the fire prevention construction pipe according to the prior invention of Japanese Patent Application No. 1-239018, as shown in FIGS. Part (2) (2) is a long hole from which (2) protrudes, and has a diameter suitable for tightly fitting the corresponding small round tongue retaining tip for penetrating the refrigerant pipe (4) +4) +5 ) (5) A long rock wool molded member made of non-combustible material (
6) is fitted, and both side protrusions (2 3) through the refrigerant pipe and each step hole (4) (4) (5) (5
) to tightly fit the end of the insulation chip wrapped around the refrigerant tube to prevent condensation. Unlike metal, rock wool resin is easily damaged during transportation, handling, etc. of construction pipes, so there is a risk of accidental breakage and damage. A circular hole (3) (3) and a stepped hole (41 (
4) +5) +5) The molding of one long rock wool n molding member (6) (see Fig. 8) is complicated, troublesome and costly, and the step hole +4) (4) (5)(
5) It is not easy to tightly fit the flexible urethane tube portion into the tube, and there are problems such as casing.

(Problems to be Solved by the Invention) The present invention is directed to solving the above-mentioned problems such as the danger that the protrusions exposed from both ends of the iron pipe of the rock wool molded member in the above-mentioned prior invention are easily damaged. The task is to improve.

That is, after making the iron pipe long enough to cover the protruding part of the rock wool molded member exposed outside the iron pipe, the part corresponding to the protruding part of the molded member to be fitted onto the iron pipe is separated as shown in the figure. A short rock wool molded member is fitted into the iron pipe with hollow cylinders formed on both sides, and a pair of separators of a size suitable for fitting are inserted into the hollow cylinders at both ends. In addition, each piece is a soft piece that opens and closes to open a hole for the tube part that wraps the refrigerant pipe, and by using the piece body, the work of fitting the tube part to prevent condensation is smooth and quick, and the refrigerant pipe penetrating construction is possible. In addition to making it easy for only plumbers to carry out the work and ensuring the safety of transporting, handling, and constructing fireproof construction pipes, it also makes it possible to simplify the manufacture of each part and achieve low-cost mass production, thereby increasing economic efficiency and demand. The purpose is to enhance sexuality.

(Means for solving the problem) Make the iron pipe long and install the air conditioner inside the iron pipe. ? A rock wool molded member made of non-combustible material that is shorter than the iron pipe that has passed through the corresponding small circular hole through which the inner pipe is passed is fitted and fixed at both ends of the iron pipe, leaving hollow cylindrical parts. A pair of separate circular soft piece bodies sized to fit into each cavity are inserted through apertures of a diameter suitable for tightly fitting the ends of heat insulating tubes encasing refrigerant tubes. It is characterized by being combined.

(Function) If the fire prevention construction pipe made of the long iron pipe of the present invention is penetrated and fixed to the through hole of the fire prevention zone (Standard size) noncombustible rock wool molded member is fitted and fixed, so the corresponding refrigerant pipe from the air conditioner is passed through the small circular hole of the molded member, and the exposed pipe part is connected to the urethane heat insulating tube. It is made of the same material as the cough molding member or other material, and is a separate body from the cough molding member, and has an opening hole with a diameter that allows the tube portion to be tightly inserted through the fork opening and closing. By opening and closing a pair of separate circular soft piece bodies of a size that can be pushed into the hollow cylindrical part with a suitable soft insulating material, and closing the piece bodies by fitting the openings in the tube part, the piece bodies are closed. Try to fit it into the corresponding hollow cylindrical part of the iron pipe by sliding it from the tube part.

(Example) A U-bolt V with an L angle F is fixed through a through-hole H provided in a concrete floor slab E serving as a fireproof division (
Figure 6) The iron pipe (1) is made longer than the standard size S by a predetermined size S1 on both sides, and inside the iron pipe (1), a short standard-sized rock wool molded member made of non-combustible material is used for the refrigerant of the air conditioner. (6) to both ends of the iron pipe (7)
(7) are fitted and fixed evenly (see Figure 2), and for each hollow part (7) (7), a urethane heat insulating tube wrapped around the iron pipe (17) is installed. (8)(
8) A large diameter circular hole suitable for fitting the end of 1 is provided.
(9) A cutout α0αωαυaυ divided in (9) can be penetrated into two parts, leaving the outer periphery of the circular hole on one side, and the hole can be opened and closed freely. Cylindrical part (
7H7), the molded member (6) is sized to fit into the molded member (6).
It is constructed by fitting and combining a pair of separate circular soft piece bodies α□αB (Fig.

Since the present invention is constructed as described above, as shown in FIG.
The iron pipe (tl) fixed through the fire protection compartment is longer by a predetermined size S1 on both sides, and inside the pipe there are short rock wool molded members (6) of standard size and hollow cylinder parts (7) (7) at both ends. Since the molded member (6) is built-in and fitted while leaving the molded member (6), there is no risk of damage to the molded member (6) during transportation or handling.
(9) Open it in two forks with the cut of (9), and cut out the notch αQ.
Open the IQIαυαυ (Fig. 5), fit the corresponding end 6 of the tube (8) (8) that wraps the exposed refrigerant pipe RR in an open-ended manner, close α of the piece body α, and drill a hole. If you do this, the tubes (8) (8) will be tightly fitted in a closed manner, so you can fit them through and shift them to open the hollow cylindrical portions (7) (7).
), the piece body α2(
The end portions of (8) (8) are easily and tightly fitted, completing the dew condensation prevention work and completing the piping of the refrigerant pipe RR.

(Effects of the Invention) With the above structure and operation, the standard size rock wool molded member (6) made of non-combustible material leaves hollow cylindrical parts (7) (7) at both ends inside the long iron pipe (1). Since the pair of piece bodies (12+03 are built-in parts and can be opened and closed in two parts) are separately assembled members, the fire prevention construction pipe formed by fitting the molded member (6) is easy to transport, handle, and construct.・There is no risk of damage to the molded member (6), and the piece body α'
Since aa'a is also fitted into the hollow cylindrical part (7) (7), it is covered by the extension part for the iron pipe, and there is no risk of damage.Furthermore, the molded member (6) is of standard size and has a small circular hole. (3) (3
), and the hole α of the piece body α can also be formed by forming a stepless hole, making it easy and inexpensive to manufacture, which eliminates the troublesome molding of the step hole molding member of the prior invention. Compared to manufacturing, manufacturing is cheap and mass-producible, and it can be provided economically and conveniently.In addition, it is difficult to insert the tube into the circular hole, whereas the piece body az Q3 can be opened and closed for two. The tube can be inserted by opening and closing the notch αωαIQI)Qυ, and the work of fitting the condensation prevention chip can be done very easily, smoothly, reliably and quickly just by shifting the core piece body UNI (12). Together with the iron pipe cover, it ensures that condensation is prevented.

As a result, all of the problems of the prior invention have been solved, and a heat insulation contractor is no longer required, and the refrigerant pipe can be easily penetrated into the fire protection zone by a plumbing contractor alone, making it convenient. Of course, this also has the effect of reducing construction costs.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view;
Figure 2 is a partial cross-sectional front view with the piece body separated, Figure 3 is a plan view of Figure 1, Figure 4 is a plan view without the piece body fitted, and Figure 5 shows the piece body in an open state. Enlarged slope map, No. 6
7 is a front view of the prior invention, and FIG. 8 is a front view of the Rockcool molded member of the prior invention.

Claims (1)

[Claims] A rock wool molded member made of a non-combustible material, which is shorter than the iron pipe and passed through a corresponding small circular hole for passing the refrigerant pipe of the air conditioner, is fitted and fixed into the long iron pipe, leaving a hollow cylindrical part at both ends of the iron pipe. For each of the hollow cylinder parts, a hole of a diameter suitable for tightly fitting the end of the heat insulation loop that opens and closes the refrigerant pipe by opening and closing the refrigerant pipe is inserted into the hollow cylinder part. A fireproof construction pipe for a refrigerant pipe penetrating a fireproof division, characterized by being formed by fitting and combining a pair of separate circular soft piece bodies.