JPH03103694A - Fire-protection construction pipe for refrigerant pipe passing through fireproof division - Google Patents

Abstract

PURPOSE:To execute simple and rapid extension-through construction of a refrigerant pipe on a fire-protection section by a method wherein refrigerant pipes are prearranged inside and outside the fire-protection section, and a construction pipe is engaged with a hole in the floor slab of the fireproof division under building. CONSTITUTION:Refrigerant pipes 1 and 1' are prearranged inside and outside a fireproof division, and a construction pipe is engaged with a hole in a floor slab S of a fire-protection section under building. In which case, only by coupling the ends of the refrigerant pipes 1 and 1' to coupling pipes 19 and 19', respectively, the pipes 19 and 19' form a through-refrigerant pipe. A molded member 14 of an incombustible material is longer than an iron pipe 2, and is engaged with the iron pipe in a state that the two end parts thereof are protruded from the two ports of the iron pipe 2. This constitution executes simple and rapid fireproof and smokeproof extension-through construction of the refrigerant pipe on the fireproof division.

Description

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

(Prior art) When the refrigerant pipe of an air conditioner is installed through a steel pipe that is fitted and fixed into a hole in a fireproof compartment, the construction of the refrigerant pipe penetrating the iron pipe prevents the spread of fire outside the compartment from passing through the iron pipe. It is a legal standard for fire protection for building construction and air conditioning-related construction that construction work must be carried out under reliable fire prevention conditions as soon as possible.

However, since the conventional penetrating fire protection construction for iron pipes of refrigerant pipes uses simply hollow iron pipes, as shown in the conceptual diagrams of Figures 5 and 10, (1) the first step is A pair of refrigerant pipes (1) (17) of different diameters according to each standard diameter are inserted into the through holes H of the floor slab S of the concrete fire prevention compartment (17), and inserted into the holes H at an L angle. After tightening the U band V of F and fixing it in a well-known manner, pipe construction is carried out by passing the refrigerant pipe (1) through the iron pipe (2) (Fig. 7).

Adjust the fit, open and close the split holes (4) (4), fit each refrigerant pipe tlJ (11), and tape the outer periphery (6).
) (6) After (Fig. 5), further split both nuclear cylinders +5)
(5) Tape (7) the parts together (Figure 7).

(3) In the third step, the outer periphery of the combined split body (5) (5) is further wrapped with a non-combustible band (8) to a thickness that fits inside the iron pipe (2), and the outer periphery is taped ( 9) Shi, Mesuru (
Figure 8).

The gaps that inevitably occur between the two are filled up by pushing in the non-combustible packing material OI (Figures 6 and 9).

Heat insulation tube made of rethane resin etc. 01) Taping αυ α
Installation is completed by bringing the ends of each tube α1) (11) into contact with both end surfaces of the core splitting cylinder (5) (5i) (Fig. 10).

(Problem to be solved by the invention) The conventional construction related to the above-mentioned multi-step process is a simple empty iron pipe (2
; is used, there are more decisive drawbacks as described below.

1. It involves a very large number of steps, requires complicated and troublesome steps, labor, time, and skilled techniques, resulting in extremely low work efficiency and high costs.0 2. The first step will be carried out by a plumbing contractor, and the second and subsequent steps will be carried out by two contractors, so it is convenient for both contractors! ! II! II is troublesome and expensive. 3. The work of filling and sealing the gap with the iron pipe (21) is troublesome and requires skill, but it is extremely difficult to completely seal it, so fire and smoke can pass through the small gap in the iron pipe (2) and separate it. Complete fire safety to the outside is low or present.

In order to correspond to the diameter of refrigerant pipe (1) (17), the groove width of split groove f3 (3) must be cut to a larger or smaller size with a cutter and the tube hole adjusted.
), it becomes a troublesome tube-fitting operation to fit the pipes one by one, and together with the taping work on the outer periphery, the workability is really poor.

5. When the heat insulating tube aυ01) is brought into contact with the split cylinder surface, when the cut end of the tube and the cylinder surface meet, a minute gap will be created at the contact surface. Since dew condensation occurs on the thick refrigerant pipe (1) on the low pressure side through the pipe, in order to prevent condensation, the troublesome work of sealing the contact area by wrapping it in a thick, ungainly ball with tape, etc. is necessary. And materials? : Required.

6. As a result of high installation costs, construction of houses and buildings with many partition walls is extremely uneconomical due to the large number of pipes.

Therefore, the present invention eliminates the above-mentioned conventional drawbacks, requires extremely few construction steps, and is simple and quick. In addition to being inexpensive and highly efficient, it does not require skilled winding techniques, guarantees completely safe fire and smoke prevention, and has a simple structure for the fireproof section of refrigerant pipes, which is revolutionary and does not cause any condensation on the pipes. Another object of the present invention is to provide a fireproof construction pipe that can be mass-produced at low cost, and to enable simple construction by only a plumbing contractor.

(Means for Solving the Problem) In order to solve this problem, the present invention provides a method in which both sides of the iron pipe are installed in a standard size iron pipe to be installed in a through hole provided in a floor slab of a fire protection compartment. The projecting portions on both sides protrude the required length from both ends, and are provided with small circular holes over the fitting range within the iron pipe, and the projecting portions are provided with a large diameter step hole that communicates with the small circular holes. A non-combustible rock wool molded member molded to a size that fits inside the iron pipe is fitted with the protrusions on both sides protruding from both ends of the iron pipe, and a diameter corresponding to the small circular hole is inserted into the molded member. A connecting pipe for connecting the refrigerant pipes with a length protruding from the step hole is fitted through the step hole, and the ends of the heat insulation tubes fitted into both protrusions of the pipe are tightly fitted into each step hole. Become.

(Function) If the iron pipe part of the present invention is fitted and fixed into the through hole of the fire protection compartment of the floor slab under construction, the connection projecting through the rock wool molded member made of noncombustible material fitted into the iron pipe will be formed. Since the pipe protrudes into and out of the fire prevention compartment, the refrigerant pipes of the air conditioner that are piped inside and outside the fire prevention compartment are connected to the ends of the pipes, and heat insulating tubes are installed over the entire piping area including the connection part. By taping with the copper, the refrigerant pipe communicates with the connecting pipe, the pipe becomes a refrigerant pipe, and the refrigerant pipe is constructed to penetrate through the fire protection section.

Since the molded member is fitted into the iron pipe, there is no gap, and fire and smoke prevention is ensured. By tightly fitting the heat insulating tube attached to the connecting pipe, there is no gap at all at the boundary between the construction pipe and the piping, which ensures the prevention of condensation in the thick refrigerant pipe on the low pressure side. An embodiment of the invention will be described with reference to the drawings.This is an iron pipe (2) of a standard size that is fitted and fixed with a U-pand V, etc. of a buy-through hole HKL angle F provided in a fire protection section of a concrete floor slab S under construction. Inside, both sides protrude from both ends of the iron pipe (2) by the required length (II ae), and a large diameter small circular hole α3αi is provided over the fitting range inside the iron pipe (2). A long rock wool molding member α4 of non-combustible material formed to a size that fits inside the iron pipe {2} with a step hole α?) (1?) α8 (111) placed inside the iron pipe (2). Insert the protruding parts αe (Ie) on both sides from the opening, and insert the refrigerant pipe (tt) with a diameter corresponding to 13 (13
A connecting pipe a1al connecting F is fitted with its both sides protruding from the fitting hole, and a short heat insulating tube Q! Insert the 9αi and attach the crest tube (1
5 (Each end of I!l9 is tightly fitted into each step hole αDai side αi, and the material of the molded member Q4 has cushioning properties, so its elasticity can be used to fit the fitting part. In order to make the tube αωα field more tightly fitted, protrusions on both sides (Le
As may be strongly taped with non-combustible tape (21 m) to shrink the protrusion αea6, and the means for fitting the e. type member α fathom to the iron pipe (2) utilizes the elasticity of the molded member α. In addition to press-fitting, adhesive fixation may also be used.

For fixing the iron pipe (2) to the through hole H, in addition to the U-band V, various conventional fixing means may be used.

The tube (1!19Q51) may be fitted into the hole and fixed with adhesive.

The standard length of the iron pipe (2) is usually 1 m, but there is no limitation. Then, the molded member α40 both side protrusions αQα
The length of Q is preferably about IQ cm.

In addition to air conditioners, the present invention can of course also be used for refrigerant pipes of refrigeration equipment.

Therefore, if the above-mentioned fire protection construction pipe is fitted and fixed in the through hole H of the fire protection section of the floor slab S under construction, it will penetrate and protrude through the core molded member α (a) fitted in the iron pipe (2). As a result of the connecting pipe α9 (11) protruding into and out of the fire prevention compartment, the refrigerant pipe (1) tlJ of the air conditioner, which is piped inside and outside the fire prevention compartment, is connected to the end of the pipe α9, Thermal insulation tube aυα is attached to the entire piping section including the connection part.
Just by covering and taping υ, the medium pipe t1+
Fire protection piping for the fire protection compartment in (1) will be created.

and,#. By fitting the molded member α4, the iron pipe (2) is closed without any gaps, ensuring fire and smoke prevention, and the molded member α4 protrudes from the iron pipe (2) on both sides and its protrusions on both sides. a
By tightly fitting the thermal insulation tube 05α to the stepped hole Onα7) (ig/QFj of rp ae, there is no gap between the construction pipe and the piping, ensuring the prevention of condensation on the thick refrigerant pipe (1) on the low pressure side. .

(Effects of the Invention) According to the present invention, the following effects can be obtained. If it is fitted into the hole in the floor slab S of the fire protection division under construction, each connection bar will turn the emblem pipe into a refrigerant pipe, making it simple and easy for anyone to use without any skill.
This is an innovative and convenient way to quickly conduct fire and smoke protection penetration of refrigerant pipes into fire protection compartments.

(3) The molded member 0 made of noncombustible material is longer than the iron pipe (2);
Iron pipe (2) is fitted with both ends protruding from both mouths,
The tight hole fitting of the heat insulating tube into the protruding part makes it completely safe to prevent condensation, and the troublesome work of conventionally sealing clumsy dumplings around the edges can be completely omitted. , O (4) Iron pipes (2
) Fire and smoke prevention is absolutely safe, helps prevent fire from spreading outside the area, and meets all legal standards for fire protection.

(5) Refrigerant pipe 11 especially in pill buildings with many partition walls, etc.
J11)'s multi-drop deployment guarantees a remarkable reduction in construction costs and is extremely economical, so it is in high demand.The overall structure is simple, so it is easy to manufacture and can be mass-produced at low cost. As a result, it has a very high degree of contribution to fire safety construction.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view;
Fig. 2 is an enlarged slope view, Fig. 3 is an enlarged view of a partially omitted cross section, Fig. 4 is an example of the construction state, Figs. 5 to 10 are conceptual diagrams of the construction process of conventionally constructed pipes, Figure 5 is a perspective view showing the fitting construction of the split cylinder into the refrigerant pipe, Figure 6 is a plan view of the state in which the winding part is fitted to the iron pipe, Figure 7 is the 11th and 2nd process drawings,
FIG. 8 is a third process drawing, FIG. 9 is a fourth process drawing, and FIG. 10 is a fifth process drawing showing completion of construction.

Claims (1)

[Claims] When installed in a standard-sized iron pipe that is installed in a through hole provided in a floor slab of a fire protection compartment, both sides protrude from both ends of the iron pipe by the required length, and the fitting range within the iron pipe is small. A round hole is provided, and a large-diameter stepped hole communicating with the small circular hole is provided in the protrusion, and a rock wool molded member made of a noncombustible material is molded to a size that fits inside the iron pipe, and is protruded from both ends of the iron pipe on both sides. Furthermore, a connecting pipe for connecting a refrigerant pipe with a diameter corresponding to the small circular hole and a length protruding from the step hole is fitted into the molded member through the step hole, and each 1. A fireproof construction pipe for a refrigerant pipe penetrating a fireproof division, characterized in that the end portions of heat insulating tubes fitted into both protruding parts of the pipe are tightly fitted into the step hole.