WO2007119793A1

WO2007119793A1 - Fluid conveyance hose

Info

Publication number: WO2007119793A1
Application number: PCT/JP2007/058100
Authority: WO
Inventors: Yuji Kumagai; Tomohiro Kobayashi
Original assignee: Bridgestone Corporation
Priority date: 2006-04-12
Filing date: 2007-04-12
Publication date: 2007-10-25

Abstract

A fluid conveyance hose where a strain sensor is not required to resistant to heat and pressure and attachment/detachment, repair, and replacement of the strain sensor can be easily performed without any affection to the hose body. The fluid conveyance hose has the hose body (2) and a pair of connection flanges (3) with circular tube-like sections (8) that are inserted and fitted to the ends of the hose body (2). The strain sensor (25) is disposed on a portion of the outer peripheral surface of the circular tube-like section (8) of at least one connection flange (3), and the portion is exposed from the hose body (2).

Description

Specification

Fluid transport hose

Technical field

[0001] The present invention, for example, connects a plurality of pipes to form a hose line to detect a fluid transport hose suitable for transporting a fluid that can be made into a liquid, in particular, distortion generated in the hose. The present invention relates to a strain sensor mounting structure for taking out.

Background art

[0002] For example, a plurality of fluid transport hoses used to load or unload crude oil, refined oil, or other liquids to tankers moored offshore, etc. These hose lines are laid on the water, in the water or at the bottom of the water, and supply liquid between tankers and buoys or quay facilities, between buoys and quay facilities, etc. It works as much as possible.

[0003] Such a hose line is, for example, under the non-use condition of the hose line due to the influence of waves, winds, etc., the resistance of water during towing, etc. Since the deformation is caused by the transport pressure of the transport fluid at the time of stoppage, the stress deterioration due to the strain history of the hose line and thus each transport hose constituting it is inevitable.

[0004] However, this type of degradation is indistinguishable by visual inspection of the fluid transport hose itself, but when the transport hose is used until it reaches the end of its lifetime, it is due to hose breakage. In the past, based on empirical rules, the hose used for a certain period has to be concretely degraded for each individual hose. Regardless of the degree, they were forced to dispose of them.

[0005] Therefore, a fluid transport hose as disclosed in Patent Document 1 has been proposed for the purpose of accurately estimating the replacement time for each fluid transport hose in use.

[0006] This fluid transport hose comprises a hose body and connecting flanges attached to both ends thereof. In this case, the end portion of the pressure-resistant reinforcing layer embedded in the hose body is provided on the outer peripheral surface of the cylindrical portion provided on the connecting flange and inserted into the hose body via an annular rib disposed on the outer peripheral surface. A strain sensor that detects the stress generated in the hose and outputs an electric signal corresponding to the stress value on the outer peripheral surface of the cylindrical portion covered by the outer rubber layer, the cover rubber layer, etc. of the intermediate rubber A transbonder is provided that accesses information in its storage unit by an electromagnetic wave signal of a predetermined frequency.

[0007] In such a hose, the stress generated in the hose is detected by a strain sensor and output to the information storage means of the transbonder, and the information storage means uses the stress value equal to or higher than a predetermined threshold value. By storing this information, the number of times that stress exceeding the threshold value has occurred inside the hose by the hose maintenance worker accessing the information stored in the information storage means of the transponder, Suppose you can know the date and time, the magnitude of stress, and so on.

Patent Document 1: Japanese Patent Laid-Open No. 11-153284

Disclosure of the invention

Problems to be solved by the invention

[0008] However, in this prior art, as a first problem, a strain sensor and a transbonder disposed on the outer peripheral surface of the cylindrical portion of the connecting flange are disposed inside the outer rubber layer and the cover rubber layer of the intermediate rubber. These strain sensors, etc. are to be buried, and it is necessary to arrange them in the cylindrical part of the connecting flange during the production process of the transport hose. It is necessary to provide heat resistance and pressure resistance that can resist the heating and pressure applied during vulcanization molding of the rubber, and when repairing or replacing strain sensors and transponders, the outer rubber sheath Although the rubber layer and cover rubber layer, etc. are not damaged, it is necessary to peel off the cylinder part once.After repair and replacement, etc., they are liquid-tight again. And There was a problem that it was necessary to embed with a predetermined pressure resistance.

[0009] In addition, as a second problem, since the strain sensor is attached to the outer peripheral surface of the cylindrical portion of the connecting flange, its deformation is small, and durability is easily ensured, but the strain is small. There was also a problem that the S / N ratio for the noise component could not be increased, the accuracy of distortion detection was reduced, and the life prediction and the accuracy of distortion detection were reduced. [0010] The first invention is to solve the first problem of the prior art, and its object is to provide heat resistance and pressure resistance to a strain sensor and the like. Providing a fluid transport hose that makes it easy and easy to attach, remove, repair, and replace strain sensors without affecting the hose body. There is.

[0011] Further, the second invention has an object to solve the second problem of the prior art, and the object is to sacrifice the durability of the strain sensor. The purpose of the present invention is to provide a fluid transport hose capable of detecting stress with high accuracy.

Means for solving the problem

[0012] The fluid transport hose according to the first aspect of the present invention includes a hose body having a plurality of pressure-proof reinforcement layers and the like, and a cylindrical portion inserted into the hose body. A pair of connecting flanges attached to the hose body, and at least one of the connecting flanges, and at least a strain sensor on the outer peripheral surface of the cylindrical portion of the exposed portion from the hose body. The physical strength is also provided independently, and preferably, the strain sensor is protected by a waterproof means that also has an equal force of a polymer material.

[0013] Here, preferably, the strain sensor is disposed on the protruding base portion of the rigid protection member provided with the cylindrical partial force protruding radially outward, and preferably, the connection flange of the rigid protection member is provided. The shape in the radial cross section including the axis is L-shaped to cover the strain sensor in a bowl shape, and more preferably, this L-shaped rigid protection member projects in a bowl shape toward the flange portion side of the connecting flange. Arrange in a posture to

[0014] In the fluid transport hose according to the first invention, it is preferable that the strain sensors are disposed at least at four locations spaced equally in the circumferential direction of the cylindrical portion. For the strain sensor to be disposed, the information processing member can be disposed adjacent to the inside or outside of the cylindrical portion in the radial direction or adjacent to the axial direction thereof. Preferably, the rigid protective member is provided continuously over the entire circumference of the cylindrical portion.

[0015] A fluid transport hose according to a second aspect of the present invention includes a pair of connecting flanges, a hose body having an end joined to each of the cylindrical portions serving as the bases thereof, and a stress state of the hose body. In a fluid transport hose comprising a known strain sensor, the strain sensor is spaced from the connection flange at a longitudinal position where the flange face of the connection flange is also separated by a distance of 1.5 m or less. It is the fluid transport hose which arranges.

[0016] In the fluid transport hose according to the second invention, the strain sensor may be disposed on the surface of the hose body, or may be disposed embedded in the hose body. It is preferable that the strain sensors are arranged in four or more places on the circumference. Further, a power supply wiring for supplying the strain sensor, and a signal wiring for extracting a signal from the strain sensor. It is even more preferable to connect the wiring to a terminal connector provided on the connecting flange.

The invention's effect

[0017] The effect of the fluid transport hose according to the first invention will be described below. That is, in this fluid transport hose, the strain sensor detects the strain generated in the fluid transport hose, directly on the connection flange, on the outer peripheral surface of the exposed portion of the cylindrical portion of the connection flange from the hose body. By adopting a structure in which the hose body force is arranged independently, the strain sensor can be attached to a predetermined position of the cylindrical portion after the vulcanization molding of the hose body is completed. In addition to eliminating the need to provide heat resistance and pressure resistance to the sensor, and repairing and replacing the mounted strain sensor without affecting the hose body, it is simple and quick. be able to.

[0018] Here, when the strain sensor is protected by a waterproof means having a force equal to that of a polymer material, the waterproof means is required to be attached or detached when the sensor is repaired or replaced. As such, since it is completely unrelated to the pressure resistance and other performance of the hose body, it can be removed and attached relatively easily.

[0019] In this case, by imparting high rigidity to the waterproof means, the strain sensor can effectively protect against the force such as the collision between the hoses and the collision with the foreign matter.

[0020] By the way, in order to more effectively protect the strain sensor attached to the cylindrical portion from the action force of the external force applied thereto, the strain sensor is provided to protrude radially outward from the cylindrical portion. It is effective to dispose it on the protruding base of the rigid protection member and to support various external forces on the rigid protection member. [0021] In this case, the rigidity protection member has an L-shaped cross-section in the radial direction that covers the strain sensor like a bowl, so that the rigidity protection member can exert an external force support function over a wider range. There are benefits to get.

[0022] Here, such an L-shaped rigidity protecting member is provided in a posture that protrudes like a hook toward the flange portion side of the connecting flange, so that the attachment / detachment work of the strain sensor and the like can be facilitated. This is suitable for clarifying the boundary between the exposed part from the hose body and the non-exposed part of the hose body, and realizing sufficient support by the protective member of the external force due to deformation of the hose body. .

[0023] Furthermore, when the strain sensors are arranged at four or more positions that are equally spaced in the circumferential direction of the cylindrical portion, for example, the fluid transport hose that floats on the water surface, and thus the hose line, is in the horizontal plane. It is possible to detect the generated strain in each direction sufficiently accurately, for example, when bending deformation is applied in Fig. 1 or when bending deformation occurs in a vertical plane.

[0024] When an information processing member including a central processing unit (CPU), a clock unit, and a storage unit is disposed adjacent to the strain sensor, for example, repair of the information processing member, Replacement can also be performed without affecting the hose body.

Here, in such an information processing member, the storage unit stores the strain amount, the stress value, and the like detected by each strain sensor together with time data, and the central processing unit performs necessary processing on the stored information. Can be applied.

[0025] When the rigid protection member is continuously provided over the entire circumference of the cylindrical member, a required number of strain sensors may be provided at a required position in the circumferential direction by, for example, on-site construction. It can be simply arranged as expected.

Next, the effect of the fluid transport hose according to the second invention will be described below. According to this fluid transport hose, the strain sensor is disposed at a position in the longitudinal direction within a distance force of 1.5 m from the flange surface of the connection flange and separated from the connection flange force, so that details will be described later. In addition, the strain measurement can be performed with high accuracy, and the strain sensor can be prevented from being damaged by bending deformation, thereby ensuring durability.

[0027] Here, when the strain sensor is affixed to the surface of the hose body, maintenance of the strain sensor can be facilitated, while when the strain sensor is embedded in the hose body. Can make the strain measurement accurate by strengthening the adhesion between the strain sensor and the surrounding rubber part. In addition, by placing strain sensors at four or more locations on the circumference, stress in multiple directions can be obtained. Furthermore, a power supply wiring to be supplied to the strain sensor and a signal wiring for taking out a signal from the strain sensor are provided, and these wirings are connected to a terminal connector provided on the connecting flange, for example, at one point mooring. The stress state of the fluid transport hose can be centrally managed with the equipment installed in the buoy.

Brief Description of Drawings

FIG. 1 is a schematic perspective view showing an example of forming a hose line by a fluid transport hose according to the first invention.

FIG. 2 is a cross-sectional view of a principal part showing a fluid transport hose according to an embodiment of the first invention in a radial cross section including a central axis.

FIG. 3 is a partially enlarged view showing a connecting portion to a mooring buoy at one end of a hose line.

FIG. 4 is a block diagram illustrating an information management system for a fluid transport hose.

FIG. 5 is a schematic perspective view showing an example of forming a hose line by a fluid transport hose according to the second invention.

[Fig. 6] Fig. 6 is a cross-sectional view of an essential part showing a fluid transport hose according to an embodiment of the second invention in a radial cross section including a central axis.

FIG. 7 is a cross-sectional view of the main part showing a modification of the embodiment according to the second invention in a radial cross section including a central axis.

Explanation of symbols

[0029] 1 Fluid transport hose

2 Hose body

3 Connecting flange

4 Hose line

5 Tanker

6 Single mooring buoy

7 Buoy lower hose

8 Cylindrical part Inner rubber layer

, 11, 12 Pressure-resistant reinforcement layer, 14, 15 Annular ribs, 17, 18 Clamping wire Body wire

Intermediate rubber layer

Outer rubber layer

Rubber

Rigid protective member

a Bent edge

b Protruding part

Flange part

Strain sensor

Waterproof means

Connecting part

Terminal connector Information integration device

Power supply

Computer

External connection

Central processing unit

Memory

1, 101 A Fluid transport ho 2 Connecting flange

2a Flange surface

3 Internal rubber layer

A, 104B, 104C Metanesis hose body 106A, 106B, 106C Clamping wire

108 Outer rubber layer

109 Intermediate rubber layer

110, 11 OA strain sensor

113 Body wire

115 Information processing department

116 Terminano Recone, Kuta

119 Kanoko rubber sheet

122 Flange base

124 Flange cylinder

125A, 125B, 125C annular jib

127, 128 wiring

BEST MODE FOR CARRYING OUT THE INVENTION

First, an embodiment of the first invention will be described. FIG. 1 is a schematic perspective view showing an application example of the fluid transport hose according to the first invention. In the figure, 1 shows the fluid transport hose according to the present invention, 2 shows its hose body, and 3 Shows a pair of connecting flanges attached to respective end portions of each hose body 2.

[0031] Usually, dozens to dozens of fluid transport hoses 1 are interconnected by connecting flanges 2 to form a hose line 4 as shown in the figure. By connecting one end to the tanker 5 and the other end to the one-point mooring buoy 6, the tanker 5 and the quay can be used to transfer liquids and other fluids, such as crude oil and refined oil, through the buoy hose 7 and a submarine nove (not shown). Can be used to load or unload from a facility.

[0032] Here, the fluid transport hose 1 floating on the sea surface can be an float float hose itself having a buoyancy material, or a so-called bead float hose in which the buoyancy material is detachable. In this latter hose, the buoyancy material must be attached and detached, but the hose can be kept small in outer diameter, and the size of the buoyancy can be selected as appropriate. [0033] Fig. 2 is a cross-sectional view of the principal part showing one end portion of the latter type of fluid transport hose 1 in a radial cross section including the central axis thereof.

The fluid transport hose 1 shown in the figure has an inner rubber layer 9 of the hose body 2 on the outer peripheral surface of the cylindrical portion 8 under the insertion posture of the cylindrical portion 8 of the connecting flange 3 into the hose body 2. The end portions of the three pressure-proof reinforcing layers 10, 11, 12 that are vulcanized and bonded sequentially to the outer peripheral side of the inner rubber 9 are connected to the three strips provided in the middle position of the cylindrical portion 8. Each annular rib 13, 14, 15 [against each hoofed fibre 16, 17, 18 is fixed by turning and between the pressure-proof reinforcement layers 11, 12, the body An intermediate rubber layer 20 formed by embedding a wire 19 in a helical shape is interposed, and an outer rubber layer 21 is laminated on the outer peripheral side of the outermost pressure-resistant reinforcing layer 12, and this outer rubber layer 21 and each The basic structure is to vulcanize and bond the intermediate rubber 22 to the cylindrical portion 8.

As shown in this figure, the rigid protective member 23 having a cross-sectional force-like shape is provided so as to protrude outward in the radial direction of the outer peripheral surface force of the cylindrical member 8. The arrangement form is such that the bent end portion 23a protrudes in a hook shape toward the flange portion 24 side of the connecting flange 3.

Of course, a plurality of such rigid protective members 23 can be arranged at predetermined intervals in the circumferential direction of the cylindrical portion 8, but preferably, one protective member 23 is cylindrical. Provided continuously throughout the entire circumference of part 8.

In this figure, the outer rubber layer 21 is vulcanized and bonded to the cylindrical portion 8 on the flange portion 24 side of the annular rib 15 closest to the shaft end side, and is continuous over the entire circumference of the cylindrical portion 8. The rigid protective member 23 is also vulcanized and bonded to the radially outward projecting portion 23b, thereby increasing the strength of the outer rubber layer 21, and consequently the hose body 2, to the connecting flange 3. However, the outer rubber layer 21 can be vulcanized and bonded only to the peripheral surface of the cylindrical portion 8 as indicated by phantom lines in the figure.

Furthermore, here, on the outer peripheral surface of the cylindrical portion 8, the protruding portion 23 b of the rigid protection member 23 is covered with the bent end portion 23 a like a bowl at a position adjacent to the flange portion 24 side. The strain sensors 25 are preferably arranged at four or more locations, for example, four locations, spaced at equal intervals in the circumferential direction. [0037] These four strain sensors 25 function to detect, for example, each of tensile strain and compressive strain for each bending deformation of the fluid transport hose 1 in the horizontal plane and in the vertical plane. be able to.

Therefore, here, by disposing the strain sensors 25 at six or more locations that oppose each other in the diametrical direction, strain due to bending deformation in the fluid transport hose 19 and other surfaces can also be detected effectively. .

[0038] It is preferable that the strain sensor 25 disposed in this way is entirely covered with a waterproofing means 26 having a polymer material or other force.

[0039] Although not shown in the drawings, in the transport hose 1 as described above, the heat resistance and pressure resistance are poor in the first place, and there is a high risk of occurrence of failure as compared with the hose body 2. For example, an information processing member including a central processing unit, a clock unit, a storage unit, and the like is connected to the strain sensor 25, for example, inside or outside in the radial direction of the cylindrical portion 8, or inside the axial direction. Alternatively, it can be arranged adjacent to the outside.

[0040] The fluid transport hose 1 having the above-described configuration is required after vulcanization adhesion between the connecting flange 3 and the hose body 2 before or after mounting the rigidity protection member 23, etc. It can be manufactured by fixing the strain sensor 25 etc. to this part and applying waterproof treatment.

In this case, the wiring for supplying power to the strain sensor 25 and taking out the output signal from the strain sensor 25 can be embedded in the outer rubber layer 21, for example. The end can be connected, for example, to a terminal connector located on the nearest flange portion 24. According to this, power is supplied from the single point mooring buoy 6 to the strain sensors 25 of all the fluid transport hoses 1 connected in series, and the signal of each strain sensor 25 force is sent to the single point mooring buoy 6. You can collect.

[0041] The management of output information from each strain sensor 25 of the fluid transport hose 1 is performed by, for example, as shown in FIG. 3, the connection flange 3 of the fluid transport hose 1 at one end of the hose line 4 at one point. This can be done by using a management system such as that illustrated in the block diagram of FIG. 4 that is disposed in the mooring buoy 6 while being connected to the connecting portion 27 of FIG.

This management system includes a terminal 27 at the connecting part 27 to which the wiring from the fluid transport hose 1 is connected. The information accumulating device 29 for accumulating information transmitted from the strain sensor 25 of each fluid transport hose 1 through the null connector 28 and the information accumulating device 29 are operated, and the fluid transport hose 1 is connected via the wiring. In addition to the strain sensor 25 and the power supply device 30 that supplies power to the information processing member, for example, the information integration device 29 is provided on the upper surface of the single-point mooring buoy 6 and connected to the portable combitor 31. The external connection part 32 for taking out the information from each strain sensor 25 integrated in the outside as data is provided. The external connection portion 32 is always covered with a waterproof cap or the like.

[0042] Here, the information accumulating device 29 instructs the information processing member of each fluid transport hose 1 from the terminal connector 28 of the connecting portion 27 to read the information of each strain sensor 25 from the information processing member. A central processing unit (CPU) 33 for collecting information and a recording unit 34 for recording signals transmitted from each fluid transport hose 1 are provided.

[0043] It is also possible to use a solar battery or a battery for the power supply device 30, and in the case of using a solar battery, since charging is always performed by sunlight, the distortion of each fluid transport hose 1 is Electric power can be continuously supplied to the sensor 25, and the distortion generated in the hose can be continuously detected in each fluid transport hose 1.

According to such a management system, since the power supply device 30 for supplying power to the strain sensor 25 of each fluid transport hose 1 is installed in the single-point mooring buoy 6 that is a mooring facility, each fluid transport Compared with the case where the hose 1 is equipped with a power supply device, large electric power can be stably supplied to the strain sensor, and information on the fluid transport hose can be obtained stably.

Furthermore, since the power supply device 30 is installed only at the mooring facility, there is an advantage that the maintenance of the power supply device is easier than when each fluid transport hose 1 is provided with the power supply device.

The operation of such an information management system will be described below with reference to FIG.

The strain sensor 25 in each fluid transport hose 1 constantly detects the strain in the fluid transport hose 1. For example, in the central processing section of the information processing member in the hose, the strain sensor 25 has a strain greater than the minimum set value. Detects the stress value at that time together with the time data of the clock part.

[0046] The central processing unit 33 of the information accumulating device 29 calls and executes the program stored in the storage unit 34, and sequentially executes the information processing member of each fluid transport hose 1 through the wiring at regular intervals. The unique identification information and information read command are output.

[0047] The information processing member of each fluid transport hose 1 receives the unique identification information and information read command from the wiring, and the fluid transport hose stored in the received unique identification information and the storage unit in the information processing member If the identification information matches, the information processing member of the matched fluid transport hose 1 reads the distortion information together with the time data information from the storage unit, The information is output together with the unique identification information to the information accumulation device 29 of the single mooring buoy 6 through the wiring.

When the central processing unit 33 of the information accumulation device 29 receives strain information and time data information from each fluid transport hose 1, the central processing unit 33 stores the information in the storage unit 34 for each fluid transport hose.

In this way, the storage unit 34 stores the information of each sensor 25 for each fluid transport hose for a certain period in the past.

[0049] This information is transferred to the buoy 6 by the maintenance worker of the fluid transport hose, and the portable computer 31 as the information acquisition means is connected to the external connection portion 32 of the buoy 6. Into. Computer 31 force By displaying this information on the display unit, it is possible to detect the fluid transport hose 1 to which an abnormal or many external force has been applied, and based on this, the fluid transport hose 1 is damaged. It is possible to replace the hose with a new one at an appropriate time.

[0050] Thus, here, the maintenance worker needs to approach the individual fluid transport hose 1 and read the information of the strain sensor 25 from the individual fluid transport hose 1, so that the fluid transport hose from the single-point mooring buoy 6 does not need to be read. This information can be read in a batch and the fluid transport hose 1 that may be damaged can be detected, so that the maintenance worker's working time can be reduced and labor can be reduced.

[0051] Here, instead of the external connection unit 32 of the management system as shown in the figure, a transmission / reception device is provided, and information from the strain sensor 25 output from the central processing unit 29 is installed on land by radio. It can be output to a computer that is an external information acquisition means via a transceiver.

In this case, power is supplied from the power supply device 30 to the transmission / reception device. Where It is also possible to use a mobile phone for each of the transmitter / receiver on the shore side and the land side. When these transmitters / receivers are used, the information of the fluid transport hose 1 is read from the single mooring buoy 6 in a batch. As a result, information is sent to the computer via the transceiver immediately from the single-point mooring buoy 6 that reduces the labor by reducing the work hours of the maintenance workers. It is possible to detect the fluid transport hose 1 with external force applied in real time in real time.

[0052] By the way, in the information management system as described above, in addition to the case where all of a plurality of connected fluid transport hoses have one or more strain sensors, a strain sensor is provided in every other fluid transport hose. It can be applied even when the sensor is installed on every other hose, and when necessary, at least one hose of the plurality of hoses is equipped with a sensor. Even can be applied.

Next, a fluid transport hose according to an embodiment of the second invention will be described. FIG. 5 is a schematic perspective view showing an application example of the fluid transport hose according to the first invention, and FIG. 5 shows the fluid transport hose 1 of the first invention in FIG. In the same manner, hose body 2 in FIG. 1 is replaced with hose body 105, and connection flange 3 is replaced with connection flange 102. The embodiment is as described for the fluid transport hose 1 of the first invention, and the detailed description is omitted.

FIG. 2 is a cross-sectional view showing the end of the fluid transport hose 101. The fluid transport hose 101 is formed by joining metal connecting flanges 102 to both ends of the hose body 105, and the hose of the connecting flange 102. The flange base portion 122, which is a joint portion with the main body 105, is configured by integrally providing one or more annular ribs 125A, 125B, and 125C protruding outward in the radial direction of the cylindrical portion 124.

[0054] The hose body 105 has an inner rubber layer 103 that hermetically seals the liquid to be transported, one or more pressure-resistant reinforcing layers 104A, 104B, 104C, and a body wire 113 arranged in a spiral shape. The rubber layer 109 and the outer rubber layer 108 that protects the outer surface are laminated in this order from the inside in the radial direction to the outside, and each pressure-resistant reinforcing layer 104A, 104B, 104C is attached to both ends of the hose body 105. Folding around the provided clamping wires 106A, 106B, 106C Further, it is locked to the tightening wires 106A, 106B, and 106C.

[0055] Then, the hose body 105 and the flange base 122 are joined by connecting the inner rubber layer 103, the pressure-resistant reinforcing layers 104A, 104B, and 104C, the intermediate rubber layer 109, and the outer rubber layer 108, respectively. It is made by adhering to the base 122 and restraining the displacement of the fastening wires 106A, 106B, 106C in the hose length direction by the annular ribs 125A, 125B, 125C.

[0056] Then, the fluid transport hose 101 is provided with a strain sensor 110 that detects the stress state of the hose body 105 at a position away from the flange base 122 that is not directly attached to the flange base 122. In the case of the example shown in FIG. 6, the strain sensor 110 is attached to the surface of the hose body 105. In this case, the strain sensor 110 is covered to the outside of the strain sensor 110 so that the strain sensor 110 is not directly exposed to damage. Affix rubber sheet 119. Further, the strain sensor 110 needs to be arranged at a distance of 1.5 m or less measured along the hose length direction from the flange surface 102a.

[0057] The second invention is characterized by the position where the strain sensor is attached. If the strain sensor is attached directly to the flange base 122, the rigidity of the metal flange 102 is high, so the same stress is applied. Therefore, the signal level from the strain sensor 110 becomes weaker and the S / N ratio cannot be increased, and the accuracy of the strain data deteriorates. On the other hand, in the second invention, since the strain sensor is arranged in the rubber part that is located away from the flange base 122 and can obtain a large amount of deformation even with the same stress, the S / N ratio is sufficient. It can be taken high and distortion can be measured with high accuracy.

[0058] Further, when the strain sensor 110 is disposed at a position in the longitudinal direction at a distance exceeding 1.5 m, it is away from the highly rigid flange 102, so that the strain sensor is immediately subjected to local bending deformation. In addition, the correlation with the stress at the point where the degree of fatigue of the hose body 105 becomes higher becomes lower, making it difficult to use for prediction of the life of the hose body 105, etc. End up.

[0059] Here, it is preferable that the strain sensors 110 be spaced apart from each other by four or more force points in the circumferential direction. For example, the strain sensors 110 are spaced in the longitudinal direction by 90 ° in the circumferential direction. It is possible to detect bending strains in two directions perpendicular to each other in the orthogonal plane, and tensile and compression strains in the longitudinal direction. These strains correspond to the point of highest fatigue in the hose body. By obtaining the correlation with the force in advance, the stress in each direction acting on the point with the highest degree of fatigue can be estimated at any time.

[0060] In this case, as a method of manufacturing the fluid transport hose 101 according to the second invention, the entire fluid transport hose 101 is vulcanized and completed, and then the strain sensor 110 is attached to the surface of the hose body 105. After that, it is easy to replace and repair even if the strain sensor 110, which is preferably pasted with the cover rubber sheet 119, breaks down.

[0061] Further, a wiring 127 for power supply to the strain sensor 110 and a signal output from the strain sensor 110 is embedded in the outer rubber 108, and the end of the wiring 127 opposite to the strain sensor 110 side is embedded. It is preferable to connect to a terminal connector 116 disposed on the nearest flange 102. Power is supplied from the single point mooring buoy 6 to the strain sensors 110 of all the fluid transport hoses 101 connected in series, and the signals from these strain sensors 110 are collected in the single point mooring buoy 6. be able to.

Furthermore, it is preferable to attach an information processing unit 115 to the connecting flange 102. Here, the information processing unit 115 includes a central processing unit (CPU), a clock unit, and a storage unit. The clock unit outputs time data, and the storage unit outputs a stress value by the strain gauge 110. Store information along with time data. The storage unit stores unique identification information for each fluid transport hose 1. The information processing unit 115 and the terminal connector 16 are connected by a signal line, and these may be integrated.

[0063] In order to withstand bending of the hose, the wiring 128 is preferably wound in a spiral shape or embedded in the hose in a zigzag shape. In addition, the terminal connector 116 of the fluid transport hose 1 farthest from the mooring facility may be left open if it does not affect the information collection from the fluid transport hose 1, but if there is an effect, the terminal connector 116 is connected to the terminal connector 16. It is better to put on.

FIG. 7 is a modification in which the arrangement of the strain sensor 110 in the fluid transport hose 101 of the embodiment according to the first invention shown in FIG. 6 is changed. In the fluid transport hose 101A, the strain sensor 110A is Unlike the fluid transport hose 101 of the above-described embodiment, only the force embedded in the hose body 105, for example, the intermediate rubber layer 109 and the outer rubber layer 108, is not attached to the surface of the hose body 105. Other points, eg strain sensor 1 About the point that 10A is provided at a position away from the flange base 122 force that is not directly attached to the flange base 122, and that it is located within 1.5m from the flange surface 102a Is exactly the same as the fluid transport hose 101 of the above embodiment.

[0065] In the case of the above modification, the strain sensor 110A can be vulcanized in this state by burying the entire fluid transport hose in rubber before vulcanization.

[0066] Regarding management of output information from each strain sensor 25 of the fluid transport hose 101 as described above,

The fluid transport hose 1 of the first invention is as described above with reference to FIGS. 3 and 4, and a detailed description thereof is omitted.

As for the fluid transport hose 101 of the second embodiment of the invention, the fluid transport hose 1 of the first invention in FIG. 3 is the fluid transport hose 101, and the hose body 2 is the hose body.

Refer to 105, and replace the connecting flange 3 in FIGS. 3 and 4 with the connecting flange 102, respectively.

Industrial applicability

[0067] Although the fluid transport hose has been described above in the case where the buoyancy material is attached / detached, the present invention relates to a floating type fluid transport hose that is used while constantly floating and the sea surface. It can also be applied to the submarine type used below, and the floating transportation hose that floats on the sea surface when used and sinks to the seabed when not in use.

[0068] Further, the present invention can also be applied to a buoy hose used between a one-point mooring buoy and a submarine pipe laid or buried on the seabed connected to an onshore tank or the like.

Claims

The scope of the claims

[1] A fluid transport hose comprising a hose body and a pair of connecting flanges attached to respective end portions of the hose body in a posture of inserting the cylindrical portion into the hose body. A fluid transport hose in which a strain sensor is arranged on the outer peripheral surface of the exposed portion from the hose body of the cylindrical portion of the connecting flange.

[2] The fluid transportation hose according to claim 1, wherein a strain sensor is disposed on a projecting base portion of a rigid protection member provided so as to project outward in the radial direction of the cylindrical part.

3. The fluid transport hose according to claim 2, wherein the shape of the rigidity protection member in the radial cross section including the connecting flange axis is an L shape that covers the strain sensor like a bowl.

[4] The fluid transport hose according to claim 3, wherein the L-shaped rigid protection member is provided in a posture protruding in a hook shape toward the flange portion side of the connecting flange.

5. The fluid transport hose according to any one of claims 1 to 4, wherein strain sensors are arranged at least at four locations that are equally spaced in the circumferential direction of the cylindrical portion.

6. The fluid transport hose according to any one of claims 1 to 5, wherein an information processing member is disposed adjacent to the strain sensor.

[7] Claims 2-6, wherein the rigid protective member is provided continuously over the entire circumference of the cylindrical portion! The fluid transport hose according to any one of the above.

[8] A fluid transport hose comprising a pair of connecting flanges, a hose body having an end joined to each of the bases, and a strain sensor for detecting a stress state of the hose body, wherein the strain sensor is connected to the connection hose. A fluid transport hose in which the connecting flange is also disposed at a longitudinal position where the distance between the flange faces is within 1.5 m.

9. The fluid transport hose according to claim 8, wherein the strain sensor is attached to the surface of the hose body.

10. The fluid transport hose according to claim 9, wherein the strain sensor is embedded in the hose body.

[11] The fluid transport hose according to any one of claims 8 to 10, wherein the strain sensors are arranged at four or more force points on the circumference. The power supply wiring supplied to the strain sensor and the signal wiring for extracting the strain sensor force signal are provided, and these wirings are connected to a terminal connector provided on the connecting flange. : The fluid transport hose described in L1.