JPH02152816A - Transport pipe safety device for transferring fluid material - Google Patents

Abstract

PURPOSE:To improve the safety and to solve the trouble by partial replacement by interposing a fuse portion inferior in pressure resistance of a transfer pipe in the midway of a transfer main pipe in the above device for transferring building fluid material such as concrette or the like. CONSTITUTION:Opening portions 12a, 12b of a fuse portion 10 are connected to opening portions 11a, 11b of a transfer main pipe 14 by con-necting means 13a, 13b such as nipples or the like. At this time, the fuse portion 10 is formed by material, the pressure resistance of which is inferior to the pressure resistance of the transfer main pipe 14. By this arrangement, when the abnormal pressure is produced, the fuse portion is broken so that there is no possibility of breakage at unexpected places so as to improve the safety. Further, the need of entire replacement can be eliminated, and the partial replacement will be enough.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a transfer pipe safety device for transferring fluids, particularly for transferring hardened materials for civil engineering and construction such as fresh concrete.

[Background Art] Normally, in the construction of a large-scale building, a large amount of fresh concrete, which is a fluid, is transported to a construction site using a transfer pipe and is used as a construction material.

In particular, transporting fresh concrete using transfer pipes is used as an effective means in tunnel, subway construction, etc.

However, a part of the transfer pipe became clogged for some reason, and
If the flow during transfer of a fluid such as ready-mixed concrete becomes poor, the pressure inside the transfer pipe becomes abnormally high compared to an unclogged state, and if the transfer pipe cannot withstand the abnormally high pressure, some or all of the transfer pipes may close. Damage happens. In this way, if a fluid transfer pipe is damaged, the liquid such as ready-mixed concrete inside the pipe may suddenly and unexpectedly blow out all at once, resulting in physical or human disasters such as buildings. There was a problem.

Furthermore, the manner in which fluid transfer pipes are damaged is not always the same; in some cases, the damage is local and repair is relatively easy;
Even if only a part of the transfer tube is the transfer tube itself, the entire transfer tube often has to be replaced, which is also an economical problem.

[Problems to be Solved by the Invention] The present invention prevents physical and human disasters caused by sudden and unexpected breakage of conventional transfer pipes for fluids such as concrete, and It is an object of the present invention to provide a new transfer pipe safety device for transferring fluids such as fresh concrete, which is economical and does not require replacing all transfer pipes even if they are damaged.

[Means for Solving the Problems] The present inventors have conducted intensive research to solve the structural problems of conventional transfer pipes for transferring fluids such as ready-mixed concrete under abnormally high pressure. By providing a transfer pipe section with lower pressure resistance than the transfer pipe main pipe, which is removable in advance, in a part of the pipe, that is, a fuse section (referred to as a fuse section for convenience as it has the same function as a fuse), safety and economy are achieved. The present invention was completed by discovering that a new fluid transfer pipe for fresh concrete, etc., with excellent properties can be obtained.

In other words, in the middle of the main pipe for transferring fluids such as ready-mixed concrete, there is a transfer pipe made of a material with lower pressure resistance than the material of the main transfer pipe, that is, a fuse part, and the opening of the fuse part is connected by a connector. A transfer pipe safety device for transferring fluids is provided, which is connected to a transfer main opening and in which the fuse part is covered with a splash protection pipe together with the transfer main opening.

[Function] With the above means, even if the transfer pipe becomes clogged, the so-called fuse part is inferior in pressure resistance to the transfer main pipe, so the transfer main pipe is not destroyed, and only the fuse part ruptures to escape from the abnormal pressure. becomes possible. Furthermore, when the fuse part ruptures, the blown out fluid is protected by the scattering protection tube, so it will not be scattered around. In this case, a sensor or the like can detect the fuse rupture, stop the motor of the air compressor, etc., open the shatter protection tube, and replace the fuse with a new one.

This makes it possible to prevent sudden and unexpected breakage of the transfer pipe and the scattering of debris and fluid, and it becomes possible to easily replace only the fuse section.

[Example] The transfer pipe safety device for transferring fluids of the present invention will be described in detail with reference to the drawings.

Figure 1 shows the complete transport system for transporting fluids of the present invention @20
The transfer main pipe 14 for transferring fluids such as ready-mixed concrete to the construction site, to which the transfer pipe safety device for transferring fluids of the present invention is connected, which is one embodiment, is made of iron, vinyl chloride, etc. The pressure resistance of the transfer main is 800 kg/
crn'' to 1,500 kg [/c, more preferably l 500 kg f/cm' or more. A material that can withstand the transfer of hardened materials such as fresh concrete and other fluids at high pressures and high speeds. This is to maintain strength compared to the fuse part.

The transfer pipe safety device 20 for transferring fluids according to the present invention is connected to the openings 11a and 11b of the main transfer pipe 14 and the openings 12a and 12b of the fuse section. It is desirable that the two openings be connected by connectors 13a, 13b such as nipples.

This is to enable the transfer pipe safety device to be easily attached and detached without rotating the transfer main pipe. However, it is not limited to a nipple, and may be a type that allows the two to be easily connected, for example, a snapping type.

Fuse section 1 between opening 12a and opening 12b
0 is made of a material with lower pressure resistance than the material of the transfer main pipe.

Therefore, if any part of the transfer pipe becomes clogged and abnormal pressure is generated in the transfer pipe, this fuse section is the first to be destroyed. That is, this fuse part is thinner than the transfer main pipe 14, or is made of rubber or synthetic resin, or the outside of the rubber pipe or synthetic resin is protected with metal wire, synthetic fiber, etc. It is desirable that the However, it is not limited to this, as long as it can withstand the pressure during the transfer of fluids such as ordinary ready-mixed concrete, has lower pressure resistance than the main transfer pipe, and is preferentially destroyed by abnormal pressure. . For example, 600 kg f/crn
The fluid splash protection pipe 15 used in the transfer pipe safety device 20 for transporting fluids of the present invention may be any material as long as it has a pressure resistance of about 90 to 800 kg f/crn.
This is to safely open the transfer main openings 11a, 11b, the fuse openings 2a, 12b, and the fuse 10, and prevent the flow of ready-mixed concrete, etc. in the transfer pipe from scattering due to breakage of the transfer pipe. It may be made of any material and/or in any shape as long as it can withstand the pressure of the animal.However, in order to prevent damage to the protection tube itself, it must have a pressure resistance equal to or greater than that of the transfer tube itself. It is desirable to have one. Furthermore, it is preferable to have a partially open structure for the protective tube rather than a sealed structure, since this can reduce the impact caused by the scattering of the fluid. Further, it is desirable if part or all of the protective tube is transparent, since this allows the state of the safety device 20 of the present invention to be easily known.

The safety device 20 of the present invention can be installed not only for transferring fresh concrete 2, but also for transferring other fluids such as food raw materials and drinking water.

FIG. 2 shows the installation state of another embodiment of the splash protection tube according to the present invention. That is, in order to soften the impact when the fuse part lO bursts and to further strengthen the protective tube 15 for protecting the transfer tube from fragments of the transfer tube and the scattering of the fluid.
Not only the stoppers at both ends, but also the multiple ones in between.
This indicates that fasteners can be installed.

FIG. 3 is a cross-sectional view of the stopper part in which the splash protection tube of FIG. 1 or 2 is installed. In this figure, a backing 19 is shown, but a stopper without a backing may be used. That is, it is also possible to integrally mold the stopper to have a thick wall only at the relevant location and to provide a backing function. Alternatively, it is also good to open this part and make it hollow. because,
This is because it has the effect of weakening the impact caused by the scattering of the fluid.

[Effects of the present invention] As explained above, according to the transfer pipe safety device for transferring fluids of the present invention, even if clogging occurs during fluid transfer and abnormal pressure is generated in the transfer pipe, Since the part of the transfer pipe where the safety device of the present invention is applied is preferentially damaged, it is possible to prevent sudden and unexpected breakage of the transfer pipe and the scattering of debris and fluids, resulting in excellent safety and economy. A transfer tube for fluid transfer can be obtained. Further, unlike replacing the transfer main pipe itself, only the so-called fuse section 10 can be replaced simply, quickly, and economically.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a transfer pipe safety device for fluid transfer which is one embodiment of the present invention, and FIG. A plan view showing the state, FIG. 3, is a cross-sectional view of the installed state of the scattering protection tube shown in FIG. 1 or FIG. 2. IO・・1a 12a. 13a. l 4 ・ ・ l 5 ・ ・ I 6 ・ ・ l 7 ・ ・ l 8 ・ ・ l 9 ・ ・ 20 ・ ・ Fuse part lb...Transfer main pipe frontage part 2b...Fuse part opening 3b...・Connection device Transfer main splash protection pipe Fluid inflow direction stopper Bolt backing Transfer pipe safety device for fluid transfer

Claims (3)

[Claims] (1) There is a transfer pipe (10) made of a material with lower pressure resistance than the material of the main transfer pipe in the middle of the main pipe (14) for transferring the fluid, and the fuse part has an opening (
12a, 12b) are connected to transfer main openings (11a, 11b) by connectors (13a, 13b). (2) The transfer pipe safety device for transferring fluids according to claim (1), wherein the connectors (13a, 13b) are of a nipple or snapping type, and the fuse portion is detachable. (3) The fluid transport system according to claim (1), characterized in that the entire fuse part (10) including the main transport openings (11a, 11b) is covered with a splash protection pipe (15). Transfer pipe safety device.