JPH0342315Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a frame used when insulating the outer periphery of piping through which low-temperature fluids such as refrigerants for freezing and cold storage or heating fluids flow. .

(Prior Art) Conventionally, piping through which a low-temperature fluid such as a refrigerant for freezing or cold storage flows is provided with a heat insulating means to prevent heat radiation from the outer peripheral surface of the pipe.

The general construction method for such insulation means is to wrap a heat insulating cover made of a heat insulating material such as styrofoam around the outer circumference of the pipe, cover it with waterproof paper or cardboard, tie it together, and wrap the pipe in a spiral with waterproof tape. I'm finishing it.

However, such insulation construction is extremely troublesome, time-consuming, and costly, and it is not possible to completely prevent air from entering from outside, so moisture in the air may condense on the outer surface of the pipe. There is a risk of corroding the pipes, and the durability is generally only about one year, requiring re-insulation within a relatively short period of time.

Therefore, instead of constructing such a heat insulating means, as disclosed in JP-A-48-27351, a thin protective cover is placed around the outer circumference of the pipe with a space between the pipe and the protective cover. An insulation construction method has been proposed in which a foaming solution such as polyurethane is injected and foamed to form a heat insulation layer. However, in such a heat insulation construction method, it is necessary to properly allow air to escape from the foaming space when the foaming stock solution is injected.

Therefore, the present inventor first constructed a cylindrical frame made of polystyrene foam or hard urethane foam with a space cut out to allow the flow of the stock solution and the escape of air, and created a structure in which the outer periphery of the tube was divided into two parts that could be freely joined. We proposed an insulation construction method in which a cylindrical cover is supported by a frame, and a foaming solution is injected into the space between the cylindrical cover and the pipe to cause foaming.

(Problem to be solved by the invention) The frame used in this insulation construction method is formed in a shape in which the middle part is hollowed out and the outer ring and the inner ring are connected by a rim. Since the ring is made of aluminum, the wall thickness cannot be made thinner in terms of strength, and the hollow space formed between the inner and outer circumferential rings cannot be made sufficiently large. As a result, the hollowed-out space becomes narrow, and the foaming stock solution flowing through the space has poor fluidity, resulting in a problem in which workability is reduced.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by this invention is to support the outer ring with hinges that can be opened and closed at appropriate intervals in the longitudinal direction of the pipe 1. The frame body 5 is attached, and the pipe 1 is supported by the support frame body 5.
A support frame for forming a heat insulating layer on the outer peripheral surface of a pipe by disposing a cylindrical cover 4 with a foaming space on the outer periphery of the pipe, and injecting a foaming stock solution into the foaming space to form a heat insulating layer on the outer peripheral surface of the pipe, A thin plate-shaped outer ring 6 that approximately matches the inner diameter of the cylindrical cover, a thin plate-shaped semicircular leg portion 7 that is attached to the upper half of the pipe 1, and the outer ring 6 and the leg portion 7. The outer ring 6 is composed of a thin plate-shaped connecting plate 8 which is connected to each other, and a part of the outer ring 6 is able to be opened and closed by a hinge 9.

(Function) The outer ring is opened at the hinge and attached to the outer circumference of the pipe, the semicircular legs are attached to the top surface of the pipe, the support frame is attached to the outer circumference of the pipe, and the outer ring is attached to the outer circumference of the pipe. supports a cylindrical cover.

Since the outer ring, the legs, and the connecting plate are thin plate-like, there is no fear that the fluidity of the injected foaming stock solution will be inhibited by the presence of the support frame.

(Effects of the invention) According to this invention, the support frame can be attached to the pipe extremely easily, and the fluidity of the injected foaming stock solution is not hindered.
It is possible to improve work efficiency.

(Example) A preferred example of this invention will be described below with reference to the drawings. The embodiments described below are applied to low-temperature fluid pipes for cooling or cold storage that are piped on the roof of a building while being supported by a support frame, but are not limited to this, and are applicable to low-temperature fluid pipes installed inside buildings or inside walls. Of course, it can be similarly applied to pipes and heating piping.

In the figure, 1 is a low-temperature fluid pipe through which refrigerant gas and water flow, and is installed on the roof of a building while being supported by a support frame 2. 3 is a mounting frame for holding the pipe 1 on the support frame 2; the end of the cylindrical cover 4 is inserted into the outer periphery of the mounting frame 3, and the inner surface of the cover 4 is connected to the pipe 1; A space is defined in between to form a heat insulating layer by injecting a foaming stock solution.

Reference numeral 5 denotes a support frame body according to this invention, which is attached to the pipe 1 at an appropriate interval between the mounting frames 3, supports the cylindrical cover 4 from the inside with an outer ring, and supports the cylindrical cover 4 from inside. This prevents the cover 4 from being crushed or deformed inward, and secures a space for foaming.

The support frame 5 is a synthetic resin molded product, and includes an outer ring 6 that approximately matches the inner diameter of the cylindrical cover 4;
It consists of a semicircular leg part 7 that is placed on the upper half of the pipe 1 and supports the outer ring 6, and a connecting plate 8 that connects the leg part 7 to the outer ring 6. Outer ring 6
2 connected by a hinge 9 so that it can be opened and closed in a part
As shown in Fig. 3, the outer ring 6 is opened, the pipe 1 is inserted into the outer ring 6, the legs 7 are attached to the upper surface of the pipe 1, and the outer ring 6 is inserted into the outer ring 6. Attach the square ring 6 to the pipe 1.

In the embodiment shown in FIGS. 1 to 3, the connecting plate 8
The vicinity of the connecting part between and the outer ring 6 is used as an opening/closing part,
A hinge 9 is provided in a symmetrical position to this, but the fourth,
As shown in FIG. 5, a hinge 9 may be provided near the connecting portion with the connecting plate 8, and the opening/closing portion may be placed at a position symmetrical to this.

Thus, according to the support frame 5 of this invention, it is only necessary to open the outer ring 6, insert the pipe 1, and attach the legs 7 to the top surface of the pipe 1, making it easy to attach the support frame 5. It is. Also, the outer ring 6,
Since the legs 7 and the connecting plate 8 are thin plates, there is no fear that the presence of the support frame 5 will impede the fluidity of the injected stock solution, improving the workability of injection.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state of use, FIG. 2 is a perspective view, FIG. 3 is a front view showing an installed state, FIG. 4 is a perspective view showing a modification, and FIG. 5 is a front view of the same. DESCRIPTION OF SYMBOLS 1... Pipe, 4... Cylindrical cover, 5... Support frame, 6... Outer ring, 7... Leg, 8...
Connecting plate, 9...hinge.

Claims (1)

[Scope of utility model registration request] A support frame 5 with an outer ring that can be opened and closed with a hinge is attached at appropriate intervals in the longitudinal direction of the pipe 1, and a space for foaming is created around the outer periphery of the pipe 1 while being supported by the support frame 5. and arrange the cylindrical cover 4,
In the support frame for forming a heat insulating layer on the outer peripheral surface of the pipe by injecting and foaming the foaming stock solution into the foaming space, a thin plate-shaped outer ring 6 that approximately matches the inner diameter of the cylindrical cover 4 and the pipe are provided. The outer ring 6 consists of a thin plate-shaped semicircular leg 7 that is attached to the upper half of the ring 1, and a thin plate-shaped connecting plate 8 that connects the outer ring 6 and the leg 7. A frame for insulating piping, a part of which can be opened and closed with a hinge 9.