JP2003156180A - Fluid transfer hose and its leakage fluid monitoring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid transfer hose and its leakage fluid monitoring method which surely detects fluid leakage to an outflow fluid absorbing layer by damage of a main reinforcing layer. SOLUTION: This fluid transfer hose is formed by successively laminating an inside surface rubber layer 3, the main reinforcing layer 4, the outflow fluid absorbing layer 6, an auxiliary reinforcing layer 8, and a cover rubber layer 9 from the hose inner peripheral side. The auxiliary reinforcing layer 8 is formed as a structure for deforming an external shape of the hose when receiving pressure of the fluid leaked to the outflow fluid absorbing layer 6 from the main reinforcing layer 3. A leakage detector 13 is installed in the fluid transfer hose for detecting the fluid leaked to the outflow fluid absorbing layer 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid transfer hose for transferring a fluid such as oil over the ocean and a method for monitoring a leaked fluid thereof. More specifically, the fluid during transfer leaks over the ocean. The present invention relates to a fluid transfer hose capable of preventing environmental pollution and a method for monitoring a leaked fluid thereof.

[0002]

2. Description of the Related Art A fluid transfer hose used for transferring a fluid such as oil over the sea may develop into a large environmental pollution if the hose is damaged and the fluid under transfer leaks into the sea. Therefore, it is essential to have a structure that allows the hose to be detected quickly.

Generally, the fluid transfer hose as described above has a structure in which an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially laminated from the inner peripheral side of the hose. There is. Each of the main reinforcing layer and the auxiliary reinforcing layer has a structure in which a plurality of reinforcing layers formed by rubber-covering the reinforcing cords inclined with respect to the longitudinal direction of the hose are laminated so that adjacent reinforcing layers intersect the reinforcing cords. The main reinforcement layer with a small inclination angle of the reinforcement cord acts as a pressure resistant layer against the fluid passing inside the inner rubber layer, while the auxiliary reinforcement with a larger inclination angle of the reinforcement cord than the main reinforcement layer. The layer prevents the fluid leaked to the outflow fluid absorbing layer from leaking to the outside due to the breakage of the main reinforcing layer.

Conventionally, in the above-mentioned fluid transfer hose, when the fluid leaks to the outflowing fluid absorbing layer due to the breakage of the main reinforcing layer, the auxiliary reinforcing layer receives the pressure of the leaked fluid and moves in the longitudinal and radial directions of the hose. There has been proposed a hose having a structure in which the outer shape of the hose is deformed by extensional deformation or torsional deformation in the circumferential direction.

In these hoses, a plurality of lines (stripe) are provided on the surface of the cover rubber layer. Because those lines are deformed with the deformation of the hose outline,
By visually recognizing the deformation of the line, it becomes possible to know the damage of the main reinforcing layer before the fluid being transferred leaks into the sea.

However, when the main reinforcing layer is slightly damaged or when no pressure is applied when the main reinforcing layer is not used, the auxiliary reinforcing layer is deformed in the main reinforcing layer even if the leaked fluid remains in the fluid outflow absorbing layer. Since it is suppressed, there is a problem that it does not deform so that it can be visually confirmed.

Further, when transferring a fluid having a larger specific gravity than seawater, in the above-mentioned fluid transfer hose, the volume of the fluid outflow absorption layer is increased, and the weight of the fluid leaked to this fluid outflow absorption layer causes the seawater to flow. A hose with a structure that sinks inside has also been proposed.

However, similarly to the above, in the case where the damage of the main reinforcing layer is slight or the pressure is not applied when the hose is not used, even if the leaked fluid stays in the fluid outflow absorption layer, the hose can be visually confirmed. There was a problem that it did not sink enough to be confirmed.

On the other hand, there has been proposed a fluid transfer hose provided with a leak detector for detecting a fluid leaking to the outflow fluid absorbing layer. The breakage of the main reinforcement layer is detected by directly detecting the fluid leaked to the outflow fluid absorption layer due to the breakage of the main reinforcement layer by the leak detector.

However, in such a fluid transfer hose provided with a leak detector, it is usually necessary for an operator to approach the hose and check the leak detector. Therefore, rough waves,
There is a problem that it is difficult to obtain leak detection information during that time because the leak detector cannot be accessed under sea conditions such as wind and rain.

[0011]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a fluid transfer hose and a fluid leakage hose capable of more reliably finding that a fluid has leaked to an outflow fluid absorbing layer due to breakage of a main reinforcing layer. To provide a monitoring method.

[0012]

SUMMARY OF THE INVENTION A fluid transfer hose of the present invention which achieves the above object is provided with an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover from the inner peripheral side of the hose. In the fluid transfer hose in which rubber layers are sequentially laminated, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer is received, A leak detector for detecting a fluid leaking to the outflow fluid absorption layer is attached to the hose.

The method for monitoring the leakage fluid of the fluid transfer hose of the present invention is to constantly monitor the change of the outer shape of the hose in the fluid transfer hose, while periodically inspecting the leakage detection device. Characterize.

Further, another fluid transfer hose of the present invention is
In the fluid transfer hose in which an inner surface rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially laminated from the inner peripheral side of the hose, the outflow fluid absorbing layer is formed from the main reinforcing layer to the above. While the hose has a structure in which the hose has a volume that is at least partially submerged in water due to the weight of the fluid leaked to the outflow fluid absorption layer, a leak detector for detecting the fluid leaked to the outflow fluid absorption layer is attached to the hose. It is characterized by that.

Also, in the method for monitoring a leakage fluid of a fluid transfer hose according to the present invention, in the fluid transfer hose, the degree of sinking of the hose is constantly monitored, while the leakage detection device is regularly inspected. It is characterized by

As described above, since the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when the pressure of the leaked fluid is applied, or the outflow fluid absorbing layer has a structure in which the hose is submerged in water, the outer shape of the hose is changed or the hose is changed. It is possible to find from a distance that the fluid leaked to the outflow fluid absorbing layer due to the breakage of the main reinforcing layer due to the subsidence.

On the other hand, the installation of the leak detector makes it possible to find the leaked fluid even when the hose is not deformed to such a degree that it can be visually confirmed. Therefore, it is possible to more reliably detect that the fluid has leaked to the outflow fluid absorbing layer due to the breakage of the main reinforcing layer, as compared with the conventional case.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In each of the drawings, the same components are designated by the same reference numerals, and duplicated description will be omitted.

FIG. 1 shows an example of a fluid transfer hose according to the present invention. The fluid transfer hose includes a hose body 1 and mounting fittings 2 connected to both ends of the hose body 1. The hose body 1 includes an inner rubber layer 3, a main reinforcing layer 4, an outer rubber layer 5, an outflow fluid absorbing layer 6, a tube rubber layer 7, an auxiliary reinforcing layer 8, and a cover rubber layer 9 in this order from the inner peripheral side of the hose. It has a laminated structure.

The mounting metal fitting 2 is constructed by integrally connecting a cylindrical metal fitting body 2A having the hose body 1 mounted on its outer peripheral surface with a connecting flange 2B for connecting the hoses.

The main reinforcing layer 4 has a structure in which a plurality of reinforcing layers formed by rubber-covering a reinforcing cord made of an organic fiber cord or a steel cord arranged in a slant with respect to the longitudinal direction of the hose are laminated. Adjacent reinforcing layers have their reinforcing cords intersecting with each other with the inclination direction being opposite to the hose longitudinal direction, and the main reinforcing layer 4 whose inclination angle is smaller than the reinforcing cord of the auxiliary reinforcing layer 8 described later is the inner rubber layer. It acts as a pressure-resistant layer and a tension-resistant layer on the fluid transferred inside the inside of No. 3. The number of reinforcing layers of the main reinforcing layer 4 can be, for example, 14 to 20 layers.

The outflow fluid absorbing layer 6 is made of a material having open cells, such as sponge rubber or polyurethane foam, and serves to temporarily store the fluid leaked due to the breakage of the main reinforcing layer 4 and also to the fluid transfer hose. -It plays the role of a floating body.

The auxiliary reinforcing layer 8 is constructed by laminating a plurality of reinforcing layers formed by rubber-covering a reinforcing cord made of an organic fiber cord which is arranged obliquely with respect to the longitudinal direction of the hose. Adjacent reinforcing layers have their reinforcing cords intersecting with each other with the inclination direction to the hose longitudinal direction being opposite, and deform the outer shape of the hose when the pressure of the fluid leaked from the main reinforcing layer 4 to the outflow fluid absorbing layer 6 is received. The structure is as follows.

As the structure, a conventionally known structure can be adopted. For example, in order to make the structure stretchable and deformable in the longitudinal direction of the hose, the inclination angle of the reinforcing cord with respect to the longitudinal direction of the hose is made larger than the stationary angle (54.73 °). When the fluid leaks to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4 and the pressure of the leaked fluid acts on the auxiliary reinforcing layer 8,
Since the reinforcing cords of the reinforcing layer of the auxiliary reinforcing layer 8 deform toward the stationary angle while reducing the inclination angle, the reinforcing layer extends in the longitudinal direction of the hose, whereby the auxiliary reinforcing layer 8 extends and deforms in the longitudinal direction of the hose. Then, the outer shape of the hose (cover rubber layer 9) expands and deforms in the longitudinal direction of the hose.

In order to obtain a structure in which the hose extends and deforms in the radial direction, the angle of inclination of the reinforcing cord with respect to the longitudinal direction of the hose is smaller than the stationary angle (54.73 °). When the pressure of the fluid leaked to the outflowing fluid absorption layer 6 due to the breakage of the main reinforcing layer 4 acts, the reinforcing cord of the reinforcing layer of the auxiliary reinforcing layer 8 deforms while increasing the inclination angle toward the stationary angle, The reinforcing layer extends in the radial direction of the hose, whereby the auxiliary reinforcing layer 8 expands and deforms in the radial direction of the hose, whereby the outer shape of the hose expands and deforms in the radial direction of the hose.

In order to make the structure twisted and deformed in the longitudinal direction of the hose, the reinforcing cords of the reinforcing layer inclined to one side and the reinforcing cords of the reinforcing layer inclined to the other side are made to have different inclination angles (for example, 55 ° on one side, 6 on the other side
0 °). When the pressure of the fluid leaked to the auxiliary reinforcing layer 8 due to the breakage of the main reinforcing layer 4 acts, the auxiliary cord is inclined due to the difference in elongation rate between the reinforcing cord inclined to one side and the reinforcing cord inclined to the other side with respect to the hose longitudinal direction. Since the reinforcing layer 8 is twisted and deformed in the longitudinal direction of the hose, the outer shape of the hose is twisted and deformed.

The auxiliary reinforcing layer 8 has a function of a protective layer for preventing the fluid leaked to the outflow fluid absorbing layer 6 due to breakage from flowing out because the inclination angle of the reinforcing cord is larger than that of the main reinforcing layer 4. There is. As the number of the reinforcing layers of the auxiliary reinforcing layer 8,
For example, the number of layers can be about 20.

The outer peripheral surface 9a of the cover rubber layer 9 is provided with stripes (not shown) of a color different from that of the hose.
When the outer shape of the hose is deformed, the stripe is also deformed accordingly, so that the outer shape of the hose can be easily found.

A communication pipe 11 is fixedly provided on the outer peripheral surface of the metal fitting body 2A, and one end thereof communicates with the outflow fluid absorbing layer 6. The other end of the communication pipe 11 communicates with a leak detection device 13 fixed to the outer peripheral surface of the metal fitting body 2A, and the fluid leaked from the main reinforcing layer 4 to the outflow fluid absorbing layer 6 is detected through the communication pipe 11. It can be guided to the device 13.

As shown in FIG. 2, the leak detection device 13 has a
A crushable member 15 that can be broken by the pressure of the leaking fluid is arranged in a transparent case 14 that communicates with the communication pipe 11. A ball having a hollow inside is used as the crushing member 15, and the ball has a structure that crushes when a pressure of about ² to 3 kg / cm ² is applied and does not restore to its original state. The balls used here may be made of any material as long as they are crushed.

In FIG. 1, numeral 35 is a bead of steel wire wound in an annular shape, numeral 36 is a fixing ring, and numeral 37 is a protrusion projecting from the metal fitting body 2A. It is for fixing to.

According to the fluid transfer hose described above, when the fluid flowing in the inner rubber layer 3 leaks into the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4, the auxiliary reinforcing layer 8 changes the pressure of the leaked fluid. Upon receiving, the hose is expanded and deformed in the longitudinal direction and the radial direction, or is twisted and deformed in the circumferential direction to deform the outer shape of the hose. Along with that, the stripes provided on the outer peripheral surface 9a of the cover rubber layer 9 are also deformed. Therefore, due to the change in the outer shape of the hose, it can be found from a distance that the fluid leaked to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4.

Further, the fluid leaked into the outflow fluid absorption layer 6 is passed through the communication pipe 11 to the case 14 of the leak detection device 13.
It flows in and destroys the crushable member 15. Therefore, it is possible to find that the fluid leaks to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4 due to the destruction of the crushing member 15.

Therefore, even if the hose outer shape is not deformed to such a degree that it can be clearly confirmed visually, leakage of the fluid can be detected by the leakage detection device 13, but the leakage detector cannot be approached due to bad weather. Also, since it is possible to know the occurrence of the leaked fluid through the change in the outer shape of the hose, it is possible to more reliably find that the fluid has leaked to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4 than in the conventional case. Become.

Moreover, even if the work of transferring the fluid by the hose is completed by using the crushing member 15 and the pressure of the leaking fluid in the outflow fluid absorbing layer 6 disappears, the crushing member 15 is crushed inside the case 14. Because it stays, you can never miss a damaged hose.

In the above-mentioned fluid transfer hose floating on the sea, when it is monitored whether or not the fluid leaks to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4, the change in the outer shape of the hose is always visually inspected or binoculars. While monitoring from a distance using, for example, an operator (for example, a diver) is near the leak detection device 14, and the leak detection device 14
Should be checked regularly (eg, once a month). By monitoring the fluid transfer hose in this way, appropriate measures can be taken before the fluid being transferred leaks into the sea.

When a fluid having a larger specific gravity than seawater is transferred, the above-mentioned fluid transfer hose is used as the fluid outflow absorption layer 6
It is possible to make the structure so that it sinks into seawater due to the weight of the fluid leaked to. As the structure, a conventionally known structure can be adopted. For example, the volume of the fluid outflow and absorption layer 6 may be so large that the weight of the leaking fluid causes the hose to be at least partially submerged in water. Since the auxiliary reinforcing layer 8 does not need to be deformed, the inclination angle of the reinforcing cord of the reinforcing layer is set to the static angle.

Even in the fluid transfer hose constructed so as to be submerged in water as described above, by combining with the leak detection device 14, it is possible to more reliably ensure that the fluid leaks to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4. Can be found at

In the case of monitoring the fluid transfer hose so set as to be submerged in water, in the above-mentioned monitoring method, the fluid transfer hose in the hose line (a large number of fluid transfer hoses are connected) is used in place of the outer shape of the hose. Always monitor the degree of sinking.

FIG. 3 shows another example of the leak detection device used in the fluid transfer hose described above. In this leak detection device 13A, a crush disk is fixed in the case 13 as the crush member 15 described above. This crushing disk is made of a thin disk made of metal such as iron, which is cut in advance, and is crushed and broken along the cut when a predetermined pressure is applied. The pressure of the leaking fluid flowing in the direction of the arrow through the communication pipe 11 crushes the crushing disk in the case 14 to detect the occurrence of leakage. The crushing disk is not limited to the above-mentioned metal, and may be made of any material as long as it is crushed.

FIG. 4 shows still another example of the leak detecting device. This leak detecting device 13B is made of a non-woven fabric which absorbs the leaked fluid into a transparent case 14 connected to the communicating pipe 11 and becomes wet. The wetting member 16 is arranged. The wetting member 16 in the case 14 gets wet by the leakage fluid flowing in the direction of the arrow through the communication pipe 11,
Detect that a leak has occurred. The wetting member 16 is not limited to the above-mentioned non-woven fabric, and may be made of any material as long as it absorbs the leaked fluid and becomes wet.

FIG. 5 shows still another example of the leak detecting device. This leak detecting device 13C is a reflector 1 capable of reflecting light in a transparent case 14 connected to the communicating tube 11.
7 are arranged. Reflective surface 1 of reflector 17
It is fixed to the bottom of the case 14 with 7a facing upward. When the leaked fluid flowing in the direction of the arrow through the communication pipe 11 reaches the upper side of the reflector 17, it is not reflected when it is exposed to light from the outside, or it becomes difficult to reflect it, so that the occurrence of leakage is detected. can do.

In the embodiment of FIGS. 2-5, the case 14
In order to make it easy to see the inside, it is made transparent, but at least a part of the case 14 may be made transparent in the range where the members arranged inside can be confirmed.

FIG. 6 shows still another example of the leak detection device. The leakage detection device 13D has a configuration in which a case 14 communicating with the communication pipe 11 is provided with a switch mechanism 21 that is operated by the pressure of the leakage fluid and a flushing light 22 that is turned on by the operation of the switch mechanism 21.
The switch mechanism 21 is actuated by the pressure of the leaking fluid flowing in the direction of the arrow through the communication pipe 11, whereby the flushing light 22 is turned on and it is possible to detect the occurrence of the leak.

As the flushing light 22, it is possible to preferably use a cron memory type flushing light which does not require battery replacement, and this makes it possible to electrically detect a leakage of a maintenance free. Flashing light 22
The case 14 for accommodating the light is preferably made of a transparent or translucent material, but may be made of any material as long as the lighting of the light 22 can be found from the outside.

FIG. 7 shows still another example of the leak detecting device. In this leak detecting device 13E, a check valve 25 is provided on the inlet side of the transparent case 14 connected to the communication pipe 11. The case 22 includes a leak fluid inflow case portion 24 into which the leak fluid flows and an air inflow case portion 23 into which the air flows. The leak fluid flowing through the communication pipe 11 passes through the check valve 25 and is indicated by an arrow. It is possible to detect the occurrence of the leakage by flowing in the leakage fluid inflow direction toward the case portion 24. Air inflow case 2
3 prevents the leakage fluid from being difficult to flow into the leakage fluid inflow case portion 24 due to the atmospheric pressure due to the influence of the air existing inside.

As shown in FIG. 7, the tip end side of the leaking fluid inflow case portion 24 is inclined toward the mounting fitting 2 side, and the leaking fluid pushes air toward the air inflow case portion 23 side, and the leaking fluid inflow case portion is formed. It is preferable to make it flow into 24. In this embodiment, the entire case 14 does not have to be transparent, and at least a part of the leak fluid inflow case portion 24 into which the leak fluid flows may be transparent within a range where the leak fluid can be confirmed.

FIG. 8 shows still another example of the leak detection device. In this leakage detection device 13F, the above-described leakage fluid inflow case portion 24 communicates with the communication pipe 11 and the liquid chamber case portion 2
7 and a transparent liquid inflow case portion 30 connected to the liquid chamber case portion 27 via a check valve 25. The liquid chamber case portion 27 has a built-in piston 26 that is actuated by the pressure of the leaked fluid, and a colored liquid is stored in the liquid chamber 31 of the piston 26 on the liquid inflow case portion 30 side.
A check valve 32 is also provided at the inlet of the liquid chamber case portion 27.

When the leaking fluid flowing in the direction of the arrow through the communicating pipe 11 advances the piston 26 toward the liquid inflow case portion 30 side, it is sealed in the liquid chamber 31 by the advancing piston 26 in advance. The stored colored fluid is pushed out to the liquid inflow case portion 30. As a result, the occurrence of leakage is detected. In this embodiment, at least a part of the liquid inflow case portion 30 may be made transparent in a range where the colored fluid can be confirmed.

FIG. 9 shows still another example of the leak detecting device. This leak detecting device 13G has a structure in which a pressure gauge 29 which is operated by the pressure of the leak fluid is connected to the leak fluid inflow case portion 24. ing. The leak fluid flowing in the direction of the arrow through the communication pipe 11 flows into the leak fluid inflow case portion 24, and the pressure gauge 29 operates due to the pressure of the leak fluid to inform the outside that a leak has occurred. In this embodiment, the case 14 may be transparent or non-transparent.

FIG. 10 shows still another example of the leak detection device. This leak detection device 13H has a transparent case 14 connected to the communication pipe 11 and a transponder 41 which is turned off in response to the pressure of the leaking fluid. The transponder 41 is fixed to the case 14, and the pressure sensor 42 is attached to the transponder 41. When the pressure sensor 42 detects the pressure of the leaked fluid, the circuit of the transponder 41 is turned off. The case 14 may be transparent or non-transparent here.

The pressure sensor 42 detects the pressure of the leaking fluid flowing in the direction of the arrow through the communication pipe 11, the transponder 41 is turned off, and the response is lost at the time of inspection, thereby notifying that the leak has occurred.

Case 1 installed outside the hose in this way
By accommodating the transponder 41 in 4, the battery can be used as the power source of the transponder 41.
Since the response distance of the transponder 41 is significantly long,
There is an advantage that it can be detected from the work boat.

Although the transponder 41 is turned off in this embodiment, the pressure sensor 42 may detect the pressure of the leaked fluid to turn on the transponder 41. Further, a transmitter may be arranged instead of the transponder 41. In that case, the transmitter is preferably configured to operate by the pressure of the leaking fluid and emit a signal, but may be configured to stop the transmission of the signal due to the pressure of the leaking fluid.

In the present invention, the leak detector described above can be preferably used as the leak detector.
The present invention is not limited to this, and for example, the configuration may be such that a worker can recognize the leak by touching the leak detector.

[0056]

As described above, according to the present invention, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorption layer is received, or the hose is immersed in water. On the other hand, since the leak detector that detects the fluid leaked to the outflow fluid absorption layer is attached to the hose, it is possible to more reliably discover that the fluid has leaked to the outflow fluid absorption layer due to the breakage of the main reinforcing layer. .

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an example of a fluid transfer hose of the present invention.

FIG. 2 is an enlarged sectional view of the leak detector of FIG.

FIG. 3 is an enlarged cross-sectional view showing another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 4 is an enlarged cross-sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 5 is an enlarged sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 6 is an enlarged cross-sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 7 is an enlarged cross-sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 8 is an enlarged sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 9 is an enlarged sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

FIG. 10 is an enlarged cross-sectional view showing still another example of the leak detector used in the fluid transfer hose of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Hose main body 2 Mounting metal fitting 3 Inner rubber layer 4 Main reinforcement layer 6 Outflow fluid absorption layer 8 Auxiliary reinforcement layer 9 Cover rubber layer 11 Communication pipe 13, 13A-H Leak detector 14 Case 15 Crushing member 16 Wetting member 17 Reflector 21 Switch mechanism 22 Flushing light 23 Air inflow case 24 Leakage fluid inflow case 25 Check valve 26 Piston 27 Liquid chamber case 29 Pressure gauge 30 Liquid inflow case 31 Liquid chamber 32 Check valve 41 Transponder 42 Pressure sensor

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3H111 AA02 BA11 CB06 CB14 CB24                       CC03 CC07 DA23 DB08 DB27                 3J071 AA13 BB11 CC05 EE05 EE37                       FF16

Claims (15)

[Claims] 1. A fluid transfer hose in which an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially laminated from the inner peripheral side of the hose, wherein the auxiliary reinforcing layer is the main The hose has a structure in which the outer shape of the hose is deformed when the pressure of the fluid leaked from the reinforcement layer to the outflow fluid absorption layer is received, while a leak detector for detecting the fluid leaked to the outflow fluid absorption layer is attached to the hose. Fluid transfer hose. 2. The hose for fluid transfer according to claim 1, wherein a stripe is provided on the outer peripheral surface of the cover rubber layer. 3. The auxiliary reinforcing layer comprises a plurality of reinforcing layers formed by coating a reinforcing cord with rubber, and the adjacent reinforcing layers are arranged such that the inclination directions of the adjacent reinforcing layers are opposite to the longitudinal direction of the hose and the reinforcing cords cross each other. The fluid transfer hose according to claim 1, wherein the hose is configured to be laminated, and the inclination angle of the reinforcing cord with respect to the longitudinal direction of the hose is larger than the stationary angle. 4. The auxiliary reinforcing layer comprises a plurality of reinforcing layers formed by coating a reinforcing cord with rubber, and adjacent reinforcing layers intersect each other with the inclination direction of the hose longitudinal direction being opposite. 2. The stacking structure, wherein the reinforcing cords of the reinforcing layer inclined to one side and the reinforcing cords of the reinforcing layer inclined to the other side have different inclination angles.
Alternatively, the fluid transfer hose described in 2. 5. A fluid transfer hose in which an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially laminated from the inner peripheral side of the hose, wherein the outflow fluid absorbing layer is While the hose has a structure in which the hose has a volume at least partially submerged in water due to the weight of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer,
A fluid transfer hose having a leak detector attached to the hose for detecting a fluid leaking to the outflow fluid absorption layer. 6. The leak detection device is installed outside the hose, the leak detection device and the outflow fluid absorption layer are communicated with each other, and the leak detection device is transparent at least partially in communication with the outflow fluid absorption layer. A crushable member that can be destroyed by the pressure of a leaking fluid is arranged in a simple case.
The hose for fluid transfer according to 3, 4, or 5. 7. The leak detection device is installed outside the hose, the leak detection device and the outflow fluid absorption layer are communicated with each other, and at least a part of the leak detection device communicated with the outflow fluid absorption layer is transparent. 2. A wet member which is in a wet state by absorbing a leaked fluid is arranged in a simple case.
The hose for fluid transfer according to 2, 3, 4 or 5. 8. The leak detection device is installed outside the hose, and the leak detection device and the outflow fluid absorption layer are communicated with each other. At least a part of the leak detection device communicated with the outflow fluid absorption layer is transparent. The hose for fluid transfer according to claim 1, 2, 3, 4, or 5, wherein a reflector capable of reflecting light is arranged in a simple case. 9. The leakage detection device is installed outside the hose, the leakage detection device and the outflow fluid absorption layer are connected to each other, and the leakage detection device is connected to the outflow fluid absorption layer to a leakage fluid inside a case. 6. A switch mechanism that is activated by the pressure of 1 and a flushing light that is turned on when the switch mechanism is activated are arranged.
The hose for fluid transfer described in. 10. The leak detection device is installed outside the hose, and the leak detection device and the outflow fluid absorption layer communicate with each other. The leak detection device communicates with the outflow fluid absorption layer via a check valve. 2. A leak fluid inflow case part and an air inflow case part which are at least partially transparent are provided.
The hose for fluid transfer according to 2, 3, 4 or 5. 11. A leak fluid inflow case portion in which the leak detection device is installed outside a hose, the leak detection device and the outflow fluid absorption layer communicate with each other, and the leak detection device communicates with the outflow fluid absorption layer. And an air inflow case part, wherein the leakage fluid inflow case part communicates with the outflow fluid absorption layer and at least a part of the liquid chamber case part connected to the liquid chamber case part via a check valve is transparent. A piston having a liquid inflow case part, in which the liquid chamber case part is operated by the pressure of the leakage fluid, and a colored liquid pushed out to the liquid inflow case part by the operation of the piston via the check valve. The fluid transfer hose according to claim 1, 2, 3, 4 or 5. 12. A leak fluid inflow case portion in which the leak detection device is installed outside a hose, the leak detection device communicates with the outflow fluid absorption layer, and the leak detection device communicates with the outflow fluid absorption layer. 6. A fluid transfer hose according to claim 1, further comprising an air inflow case portion, and a pressure gauge operated by the pressure of the leak fluid is connected to the leak fluid inflow case portion. 13. The leakage detection device is installed outside the hose, the leakage detection device and the outflow fluid absorption layer are communicated with each other, and the leakage detection device is provided with a leakage fluid in a case communicated with the outflow fluid absorption layer. 6. A fluid transfer hose according to claim 1, wherein a transponder whose response is turned off by the pressure is arranged. 14. The fluid transfer hose according to claim 1, wherein the fluid transfer hose is constantly monitored for changes in the outer shape of the hose, and the leak detection device is regularly inspected for leakage fluid monitoring method. 15. The fluid transfer hose according to claim 5, wherein the hose sink condition is constantly monitored, while the fluid transfer hose is periodically inspected to check the leak detection device.