JP3496962B2 - hose - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose for transferring oil or the like, and more particularly, to a hose for transferring oil or the like even if a pressure-resistant main body layer is broken during the transfer. The present invention relates to a hose that prevents leakage of a fluid and that can easily determine the breakage of a main body pressure-resistant cord layer of a hose by visual observation from the outside. 2. Description of the Related Art Generally, when loading or unloading oil or the like in a tanker or the like, the tanker is usually moored offshore. It is done by the hose line which was done. Conventionally, a hose used in this hose line has a configuration having a hose body 1 and mounting flanges 2 for connecting hoses to both ends thereof as shown in FIG. 14, for example. 1 is a method in which a cord such as a fiber cord or a steel cord twisted on a rubber tube layer 3 composed of acrylonitrile-butadiene rubber (NBR) or the like disposed on the innermost layer is inclined with respect to the longitudinal direction of the hose. A main body pressure-resistant code layer 4 constituted by arranging a plurality of cord layers arranged and covered with rubber so that the cords cross each other is provided, and a rubber tube layer is provided outside the main body pressure-resistant code layer 4. The intermediate rubber layer 6, the auxiliary pressure-resistant code layer 7 and the styrene Cover rubber layer 8 made of butadiene rubber (SBR) or the like is applied integrally. The fluid retention chamber 5 is provided with a main body pressure-resistant code layer 4.
Or the space formed by the intermediate rubber layer 6 or the degree to which the body pressure-resistant cord layer 4 and the intermediate rubber layer 6 are separated by the pressure of the fluid leaking from the rubber tube layer 3 and the body pressure-resistant code layer 4. And peels off when the leaked fluid flows in to form a space. The mounting flange 2 is integrally provided with a ring portion 2a for mounting the hose body 1 along the circumferential direction of the outer peripheral surface of the cylindrical portion. Withstand voltage code layer 4 and auxiliary withstand voltage code layer 7
The ends of the hose body 1 are fixed to the space between the ring portions 2b by the fastening wires 4a and 7a provided at the ends, and are adhesively bonded. The above-mentioned hose for a hose line for transporting a fluid such as oil is extremely remarkable in connection work for connecting the hoses to each other and during pressure feeding of oil or in stormy weather. To bend and receive rough handling,
In the conventional hose, the rubber tube layer 3 is damaged by intense water hammer, impact load, tension, etc., and the internal fluid flows into the fluid retaining chamber 5, and the auxiliary pressure-resistant cord layer 7 and the main body pressure-resistant cord layer 4 In order to prevent the internal fluid from flowing out to the sea when the hose body 1 is broken, a method of detecting internal breakage of the hose body 1 is adopted. [0005] As a method for detecting the internal destruction, for example, when the internal destruction of the hose main body 1 occurs, a change in the appearance of the hose main body 1 is visually judged and detected. There is known a method of detecting a sound signal by using a sound wave signal or an electric signal. However,
The former method of detecting by visual observation is not easy in the case of a hose body 1 used in the sea, and the latter method of detecting the pressure of an internal fluid and detecting the sound by a sound wave signal or an electric signal is a hose method. When the main body 1 was installed, and the installation of the auxiliary equipment or parts was complicated, there was a problem that the handling was inconvenient. The present invention has been devised in view of such a conventional problem. When the rubber tube layer and the main body pressure-resistant cord layer are broken during transportation of the fluid, and the fluid flows into the fluid retaining chamber, the fluid is prevented from flowing. It is an object of the present invention to provide a hose which can immediately detect the leakage of the water and display the state of the leakage at a position visible from the outside. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a fluid stagnation detecting means for detecting stagnation of a fluid in a fluid stagnation chamber, and a fluid stagnation detecting means for detecting the fluid stagnation. A gas generator that senses and generates a gas, and a liquid leak alarm unit equipped with a balloon membrane for enclosing the gas generated by the gas generator is provided, and when the fluid is retained in the fluid retention chamber, The gist of the invention is that the generated gas is sealed in a balloon membrane and floats to a visible position. The present invention is constructed as described above, and has a structure in which the hose body is extended in the axial direction by the internal pressure when the internal damage of the hose body occurs, and the extension of the hose body is extended beyond a certain limit. In this case, this is detected by the fluid retention detecting means, and the buoyant body is floated to the sea or lifted up from the sea so that anyone can visually recognize the leak of the internal fluid of the hose body. It is. Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. 1 to 4 show a first embodiment of the present invention. FIG. 1 is a front view of a hose body 1, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is KK of FIG. FIG. 4 is an enlarged sectional view of a portion B in FIG. 1, and a fluid retention detecting means 10 for detecting that fluid is retained in a fluid retention chamber 5 is provided on an upper surface of the hose body 1. As the fluid retention detecting means 10, for example, as shown in FIG. 2, a wire rope 12 slidably inserted into a Teflon tube 11 along a longitudinal direction is integrally formed via a rubber protector 13. One end of the wire rope 12 is fixed, and one end of the wire rope 12 is attached to a fluid inflow port 16 of a liquid leak alarm means 15 attached via an attachment jig 14 to one of the attachment flanges 2 of the hose body 1. Is connected to As shown in FIGS. 5 (a) and 5 (b), the liquid leakage alarm means 15 is provided with a hollow cylindrical tape drum 19 at the bottom side in a casing 18 formed in a concave cross section. A fluid stagnation detecting means 21 such as a well-known seawater battery is fixed in the tape drum 19 and a gas generator 22 electrically connected to the fluid stagnation detecting means 21.
Is further accommodated, and on the upper part of the gas generator 22, a connection rope wound around the tape drum 19, a balloon membrane 23 which is a folded detection part for enclosing the gas generated by the gas generator 22. The casing 18 is accommodated in a state of being connected thereto, and a lid member 25 made of aluminum or the like is fixed to the opening 18 a of the casing 18 via a fixing screw 26. The fluid inlet 16 is formed on a side surface of the fluid retention detecting means 21 of the casing 18.
A seawater tap 17 is attached to the fluid inlet 16. Next, the operation of the liquid leakage alarm means 15 which is activated when the hose body 1 is internally broken is described with reference to FIGS.
This will be described with reference to FIG. First, when the rubber tube layer 3 and a part of the main body pressure-resistant cord layer 4 of the hose body 1 are damaged and the internal fluid flows into and stays in the fluid retaining chamber 5 having liquid tightness, the hose body 1 extends in the longitudinal direction. Deformation in the circumferential direction and further twisting. Then, when tension is applied to the wire rope 12 and the hose main body 1 is deformed to a certain degree or more, the seawater launching plug 15 attached to the fluid inlet 16 of the liquid leakage alarm means 15 comes off (FIG. 9). 6 (a) and FIG. 6 (b)). When the seawater cock 17 comes off, the seawater enters the casing 18 from the fluid inlet 16 and when the seawater comes into contact with the fluid retention detecting means 21 such as a seawater battery, the fluid retention detecting means 21 reacts to cause a trace amount of water. Electricity is generated, and the electric signal is transmitted to the gas generator 22, and the gas generator 22 operates to generate gas. The generated gas enters the folded balloon membrane 23, the balloon membrane 23 is instantaneously inflated, and the inflated pressure pushes the lid member 25 made of aluminum or the like attached to the opening 18a of the casing 18. Open ((Fig. 6
(C)). The inflated balloon 23a is shown in FIG.
As shown in FIG. 6 (a), the rope 24 wound around the tape drum 19 is pulled out and floated on the sea surface W as shown in FIG.
Further, since the balloon 23a in which the gas is sealed is connected to the casing 18 via the connecting rope 24, the balloon 23a floats within a specific range, and can be easily and visually found on the sea. The internal destruction of the main body 1 can be easily detected. In the above embodiment, a seawater battery is used as the fluid retention detecting means 21. However, the present invention is not limited to this embodiment, and the pressure of the fluid flowing into the fluid retention chamber 5 is detected. A fluid pressure detection sensor may be used, and the fluid pressure detection sensor may be connected to the gas generator 22. In the above embodiment, the gas generator 22
Is configured to generate gas by the operation of the fluid retention detecting means 21 such as a seawater battery. However, the present invention is not limited to this embodiment, and the gas is generated by a chemical reaction when contacted with a fluid such as seawater. May be used. Furthermore,
Using a compressed gas cylinder or the like as the gas generator 22,
The gas may flow into the balloon membrane 23 and be inflated by opening the valve of the cylinder by the deformation of the hose body 1. Next, FIG. 7 to FIG. 12 show a second embodiment of the present invention, which is the same as the above-mentioned first embodiment. In this embodiment, the fluid retention detecting means 10 is provided on the upper surface of the hose body 1 as in the first embodiment.
As shown in FIGS. 7 to 10, a wire rope 12 slidably inserted into a Teflon tube 11 along a longitudinal direction is integrally fixed via a rubber protector 13, and One end is connected to one of the mounting flanges 2 of the hose body 1 by the mounting jig 14 and the valve 2.
7, a buoyancy member 28 is attached.
8 is provided with the same liquid leakage alarm means 15a as in the first embodiment.
Is installed. As shown in FIG. 11, the liquid leakage warning means 15a includes a gas generator 30 and a balloon film 31 which is a folded detection part for enclosing gas generated by the gas generator 30 in a casing 29. And a pressure sensor 3 for detecting a difference in water pressure when the buoyancy member 28 floats from the sea to the seaside.
2 is assembled. And this pressure sensor 32
By the operation of the above, the gas generator 30 operates to generate gas, and this gas flows into the balloon membrane 31 and floats on the sea via the wire rope 33 as shown in FIG.
It is possible to detect that internal destruction of the hose body 1 has occurred. Reference numeral 34 denotes a buoy for supporting the hose body 1. FIG. 13 shows a third embodiment of the present invention. In this embodiment, as a modification of the second embodiment, the balloon 35 floats from the sea surface to the air. That is, the liquid leak alarming means 15a has the same configuration as that of the second embodiment. The gas generated from the gas generator 30 is helium gas having a specific gravity smaller than that of air, and helium gas is contained in the balloon film 31. When enclosed, it floats from the sea to the sea and then from the sea to the air. The operation of the gas generator 30 is as follows. As described above, the buoyancy member 28 floats from the sea toward the sea surface, and when the buoyancy member 28 floats a certain distance or more, the wire 36 connected to the buoyancy member 28 is turned on. Is released by buoyancy and pressure, and the gas generated from the gas generator 30, ie, helium gas, flows into the balloon film 31, and the balloon 35 floats on the sea surface and then floats in the air. Further, since the balloon 35 is connected to the hose body 1 via the wire 36, it floats within a specific range and can be easily found visually at sea, and the inside of the hose body 1 Destruction can be easily detected. As described above, the fluid retention detecting means 21 may be a fluid pressure detecting sensor, and the gas generator 22 may generate gas by a chemical reaction when it comes into contact with a fluid such as seawater. A compressed gas cylinder or the like may be used. The means 21 for detecting fluid retention and the gas generator 22 are not limited to the above embodiment. According to the present invention, as described above, a fluid stagnation detecting means for detecting the stagnation of the fluid in the fluid stagnation chamber, and the stagnation of the fluid is sensed by the fluid stagnation detecting means to generate gas. A gas generator, and a liquid leak alarm unit equipped with a balloon membrane for enclosing the gas generated by the gas generator, and when the fluid is retained in the fluid retaining chamber, the gas generated from the gas generator is supplied to the balloon membrane. Since it is sealed and floated to the visible position, when the rubber tube layer and the main body pressure-resistant cord layer break during transportation of the fluid and the fluid flows into the fluid retention chamber, the leakage of the fluid is immediately detected. The leaking state can be displayed at a position visible from the outside, which has the effect of preventing an accident due to damage to the hose body or an accident such as oil spilling to the sea.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a hose body according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along the line AA of FIG. FIG. 3 is a side view taken along arrow KK of FIG. FIG. 4 is an enlarged sectional view of a portion B in FIG. 1; 5A is a cross-sectional view of a liquid leak warning unit, and FIG. 5B is a bottom view taken along the line FF in FIG. 5A. 6 (a) is a cross-sectional view showing a state before the operation of the liquid leak alarm means, FIG. 6 (b) is an explanatory view showing a state where the seawater tap of the liquid leak alarm means is removed, and FIG. 6 (c) is a liquid leak Explanatory diagram showing a state in which the gas generator of the alarm means is operated and gas flows into the balloon membrane, (d) is an explanatory diagram showing a state in which the rune membrane is inflated,
(E) is an explanatory view showing a state where the balloon membrane is inflated and floats on the sea surface. FIG. 7 is a front view of a hose body showing a second embodiment of the present invention. 8 is a sectional view taken along the line CC in FIG. 7; FIG. 9 is a side view taken along the line EE in FIG. 7; FIG. 10 is an enlarged sectional view of a portion D in FIG. 1; FIG. 11 is a cross-sectional view of a second embodiment of the liquid leak warning means. FIG. 12 is an explanatory view showing a state in which the balloon has floated on the sea surface. FIG. 13 is an explanatory view of a third embodiment showing a state in which the balloon has floated in the air. FIG. 14 is a sectional view of a conventional hose body. [Description of Signs] 1 Hose main body 5 Fluid retention chamber 10 Fluid retention detection means 15 Liquid leak alarm means 21 Fluid retention detection means 22 Gas generator 23 Balloon membrane

Continuation of the front page (56) References JP-A-5-99782 (JP, A) JP-A-5-272678 (JP, A) JP-A-6-249372 (JP, A) JP-A-58-174784 (JP) , A) Hikaru Hei 4-78386 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16L 11/12 F16L 1/04

Claims (1)

(57) [Claim 1] In a hose comprising a main body pressure-resistant code layer for holding a fluid and an auxiliary pressure-resistant code layer provided outside the main body pressure-resistant code layer via a fluid retaining chamber, In the fluid retention chamber, a fluid retention detection unit that detects that the fluid has retained, a gas generator that detects the retention of the fluid by the fluid retention detection unit to generate a gas, and encloses the gas generated by the gas generator. A liquid leakage alarm means equipped with a balloon membrane to be provided is provided, and when fluid stays in the fluid retention chamber, gas generated from a gas generator is sealed in the balloon membrane and floated to a visible position. Hose provided with liquid leak alarm means.