KR102124432B1 - Pressurization and decompression type compensator for balanced pulling of underwater cables - Google Patents

Abstract

Disclosed is a pressurization and decompression type compensator for balanced pulling of an underwater cable. According to the present invention, the pressurization and decompression type compensator for balanced pulling of an underwater cable comprises: a main pulley for rotating and supporting a wire integrated with an underwater cable; a fixing support unit having a first fixing pulley positioned between the main pulley and a winch to rotate and support, at a position lower than that of the main pulley, the wire supported by the main pulley, and a load detection means for detecting a load acting on the first fixing pulley by the wire; a tension adjustment unit which has a cylinder with an operating rod linearly reciprocating by the pressure of a fluid and at least two tension adjustment pulleys respectively provided on the operating rod and the cylinder to rotate and support the wire, is disposed between the fixing support unit and the winch, and tensions the wire or relieves the tension by the operation of the cylinder; a pressure generation unit configured to apply pressure to the cylinder or to reduce the pressure, and having a pressure sensor for measuring the pressure applied to the cylinder; and a control unit for controlling the tension of the wire by controlling the pressure of the pressure generation unit based on a load value of the wire detected by the load detection means and a pressure value detected by the pressure sensor. Therefore, the pressurization and decompression type compensator can continuously maintain a force for pulling the wire according to the tension acting on the wire.

Description

PRESSURIZATION AND DECOMPRESSION TYPE COMPENSATOR FOR BALANCED PULLING OF UNDERWATER CABLES}

The present invention relates to a pressure-sensitive compensation device for the balanced pulling of an underwater cable, and more specifically, a cable connecting a hull and underwater equipment even if waves and tides occur at sea (including a signal cable or a power cable) It relates to a pressure-sensitive compensation device for the balanced pulling of the underwater cable that can be applied to the wire to maintain a constant tension by applying pressure to the combined wire.

In general, a compensator is used to connect the waves to the sea, with a cable (including signal cable or power cable) connected to the hull at sea and an underwater storage cost or an unmanned remote submersible vehicle (ROV) that works on the seabed. The hull moves vertically when there is a tumble, etc., so the cable connecting the hull and the sea storage cost is repeatedly tensioned or released. This is a device that compensates for the tension of the cable when the cable is tensioned and maintains a constant tension.

For example, if the cable (3kg/m) is 100m to 300kg in depth and there is algae, the greater tension will act on the cable. As described above, the above-described compensator is used to compensate when the tension acting on the cable varies depending on the depth of water or the occurrence of algae.

In addition, if the submarine-seated robot moves away from the hull (mothership) and the cable (Umbilical Cable) or hydraulic line is pushed due to a tide or a wave, the cable located in the water to know how much cable should be pulled with force And it becomes difficult to check the condition of the hydraulic hose. At this time, compensators are used for the safety of cables and equipment.

As a prior art for such a compensator, Korean Registered Patent No. 10-1715704 (announcement date: March 13, 2017) discloses a compensator for the movement of a ship. The movement amount compensator of the ship is configured to be equipped with a cable to relieve the force transmitted from the cable withdrawn from the mounting portion to the vessel by changing the mounting portion installed on the ship, the position of the mounting portion, the vertical angle, or the left-right direction, It is configured to mitigate the force transmitted from the ship to the cable by the agitation of the ship.

However, since these compensators are configured to change only the position, the vertical angle, and the left and right directions of the mounting portion where the cable is mounted in order to weaken the force transmitted to the cable, the load acting on the cable by tidal currents, or the swell or wave. There was a problem in that it was difficult to efficiently compensate the tensile force of the cable due to the vertical motion of the ship. In particular, as the depth increases, the weight of the cable increases. Thus, there is a problem in that it is difficult to efficiently compensate for the tensile force acting on the cable based on the change in the weight of the cable according to the change in depth.

. Republic of Korea Registered Patent No. 10-1715704 (announcement date: March 13, 2017)

The object of the present invention is to actively apply pressure to a wire (including a signal cable or a power cable) that connects the hull and underwater equipment even if waves, tides and tides occur at sea, that is, the weight of the cable It is to provide a pressure-sensitive compensation device for the balanced pulling of an underwater cable that can increase or decrease the pulling force by a varying weight value in the event of a change so that the wire maintains a constant tension according to the movement of the hull.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly understood by those skilled in the art from the following description. Will be understandable.

The object, according to the present invention, is installed on the hull, including a winch for lifting or launching a wire combined with an underwater cable connected to the equipment of the seabed, the tension of the wire according to the change in the load acting on the wire For control, the main pulley for rotationally supporting the wire; It is located between the main pulley and the winch and has a first fixing pulley for rotationally supporting the wire supported by the main pulley at a position lower than the main pulley, and acts on the first fixing pulley by the wire. A fixed support unit having a load sensing means for sensing a load; A cylinder having an operating rod that reciprocates linearly by the pressure of the fluid, and two or more pulleys for adjusting tension to be installed on the operating rod and the cylinder to rotate and support the wire, between the fixed support and the winch. A tension adjusting unit arranged to tension the wire or relieve tension by the operation of the cylinder; A pressure generator configured to pressurize or depressurize the cylinder, and has a pressure sensor for measuring the pressure applied to the cylinder; And a control unit for controlling the tension of the wire by controlling the pressure of the pressure generating unit based on the load value of the wire sensed by the load sensing means and the pressure value sensed by the pressure sensor. It is achieved by a pressure-sensitive compensator for balanced pulling of the cable.

The underwater cable can be fixed by being integrated with the wire so that a load does not act on itself.

The load sensing means, a load cell fixedly installed on the top of the fixed frame; And the first fixing pulley is coupled to the bottom and the top is made of a support bracket fixed to the load cell, when the load applied to the wire in the seabed direction is applied to the load cell to detect the load acting on the first fixed pulley It can be configured to.

The tension adjustment pulley, a first flow pulley for supporting the wire supported by the first fixed pulley at a position higher than the first fixed pulley; A second fixed pulley installed on the cylinder side to support the wire supported by the first flow pulley at a position lower than the first flow pulley; And a second flow pulley for supporting the second fixed pulley and the wire supported on the winch at the same height as the first flow pulley.

The pressure generating unit, compressed air generating unit; And receiving the fluid, one side is connected to the cylinder, the other is connected to the compressed air generator, the pressure sensor is provided inside the accumulator, the control unit, the compressed air generator It may be configured to control the operation of the cylinder by pressurizing or releasing pressurization of the fluid contained in the accumulator with the generated compressed air.

Inside the accumulator, a pressurized piston for pressurizing the fluid with compressed air supplied from the compressed air generator may be provided.

The compressed air generating unit, an air compressor having a main valve; At least one compressed air storage container for storing compressed air generated by the air compressor; A connection line including a first connection line connecting the air compressor and the air accumulator, and a second connection line connecting the compressed air storage container and the main connection line; The first valve provided in the second connection line, the second valve provided in the first connection line between the second connection line and the main valve, and the first between the second connection line and the accumulator It consists of a third valve provided on the connection line opening and closing operation is controlled by the control unit; And a discharge valve provided on the first connection line between the accumulator or the second connection line and the accumulator and operated and controlled by the controller to discharge compressed air inside the accumulator.

Between the compressed air storage container and the air compressor, a supplemental compressed air storage container for temporarily storing compressed air generated from the air compressor may be provided with a fourth valve.

The pressure generating unit includes a fluid storage container having a first fluid opening/closing valve controlled by the control unit and connected to the cylinder; A bypass container provided with a second fluid opening/closing valve controlled by the control unit and connected to the fluid storage container; And a hydraulic pump installed between the fluid storage container and the bypass container, and a hydraulic pump for pressurizing the fluid contained in the fluid storage container toward the cylinder. After opening the fluid on/off valve and closing the second fluid on/off valve, operate the hydraulic pump, stop the operation of the hydraulic pump and open the second fluid on/off valve to store the fluid when operating the operation rod. The pressure of the container can be controlled to decrease.

The control unit is provided with a winch control means for controlling the winch, the winch control means, the operation end provided on the upper end of the operation rod; A bracket installed perpendicular to the base frame on which the cylinder is installed; A winding control switch installed in an upper region of the bracket corresponding to a position lower than a maximum withdrawal stroke position of the operating rod and switched by the operating end; And it may be configured to include a release control switch that is installed in the lower region of the bracket corresponding to a position higher than the minimum withdrawal stroke position of the operating rod is switched by the operating end.

According to the present invention, the pulling value (tension) of the wire pulled in water, that is, the load value of the wire is sensed, and at the same time, the pressure value of the fluid pressing the cylinder is sensed, and then the load value of the wire and the pressure value of the fluid Based on, the pressure is reduced by depressurizing the cylinder when the load value is greater than the pressure value, and when the load value is less than the pressure value, the cylinder is pressurized to increase the pressure, thereby pulling the wire according to the tension acting on the wire. It is possible to provide an effect that can be kept constant.

1 is a schematic configuration diagram showing a pressure-sensitive compensation device according to a first embodiment of the present invention.
2 is a schematic configuration diagram showing an example of a load sensing means of the pressure-sensitive compensation device shown in FIG. 1.
3 is a schematic configuration diagram showing another embodiment of the pressure generator shown in FIG. 1.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

In addition, the terminology used herein is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein,'comprises' and/or'comprising' does not exclude the presence or addition of one or more other components.

Among the accompanying drawings, FIG. 1 is a schematic configuration diagram showing a pressure-sensitive compensation device according to a first embodiment of the present invention, and FIG. 2 is an example of a load sensing means of the pressure-sensitive compensation device shown in FIG. 1 It is a schematic configuration diagram showing.

1 and 2, the pressure-sensitive compensation device 10 for the balanced pulling of the underwater cable, the wire 20 is coupled to the underwater cable 30 connected to the equipment (not shown) of the seabed ) To be installed on the hull, including a winch 40 for lifting or launching, and to control the tension of the wire 20 to be constant according to a change in load acting on the wire 20.

The pressure-sensitive compensation device 10 is located between the main pulley 50 and the main pulley 50 and the winch 40 for rotationally supporting the wire 20, and the wire supported by the main pulley 50 A load for detecting a load acting on the first fixed pulley 62 by the wire 20 is provided with a first fixed pulley 62 for supporting the rotation of the 20 at a position lower than the main pulley 50 It is installed on a fixed support portion 60 having a detection means 64, a cylinder 72 having a working rod 74 reciprocating linearly by fluid, and a working rod 74 and a cylinder 72, respectively. It is provided between two or more tension pulleys 76 for rotationally supporting the wire 20 and is disposed between the fixed support 60 and the winch 40, and tensions the wire 20 by the operation of the cylinder 72. It is configured to apply pressure to the cylinder 72 or depressurize the tension adjusting unit 70 to relieve tension or to relieve the tension, and to provide a pressure sensing sensor 82 for measuring the pressure applied to the cylinder 72 The pressure is generated by controlling the pressure of the pressure generating unit 80 based on the load value of the wire 20 sensed by the pressure generating unit 80 and the load sensing means 64 and the pressure value sensed by the pressure sensing sensor 82. It comprises a control unit 90 for controlling the tension of (20).

Hereinafter, this will be described in more detail.

As shown in FIG. 1, the pressure-compensating compensation device 10 is provided on the hull or the like by the base frame 11.

The underwater cable 30 is configured in various ways, such as a hydraulic hose, a signal cable, and a power supply line, and is integrated with each other by being tied to the wire 20 so that its own load does not act. That is, since the underwater cable 30 itself cannot withstand a large load, the wire 20 made of steel wire is tied at regular intervals or wrapped with a separate protective tube to integrate with each other. Even if the underwater cable 30 is launched into a deep water by these types, the weight of the underwater cable 30 does not act on itself, but is distributed and acts on the wire 20, thereby preventing damage or damage to the underwater cable 30. Can be.

The main pulley 50 is rotatably coupled to the top of the pulley bracket installed upright on the base frame 11 and rotates and supports the wire 20. 1, the main pulley 50 is formed to have a larger diameter than the first fixed pulley 62 and the tension control pulley 76.

1, the fixed support 60 is positioned between the main pulley 50 and the winch 40, as shown in FIG. 1, so that the wire 20 supported by the main pulley 50 is lower than the main pulley 50. In order to support the rotation, the first fixed pulley 62 for rotationally supporting the wire 20 passing through the main pulley 50 at a lower position than the main pulley 50, and the first wire by the wire 20 It has a load sensing means 64 for detecting the load acting on the fixed pulley (62).

The load sensing means 64, as shown in Figure 2, the load cell 64A is fixedly installed on the top of the fixed frame 12, the first fixed pulley 62 is rotatably coupled to the bottom and the top It consists of a support bracket (64B) fixed to the load cell (64A). That is, the load cell (64A) is installed downward on the top of the fixed frame (12) installed upright on the base frame (11), and the support bracket (64B) coupled with the first fixed pulley (62) at the bottom is the load cell ( 64A). Therefore, when the wire 20 supported by the first fixing pulley 62 is pulled upward and a load is applied to the support bracket 64B, the load 20 is applied to the load cell 64A on which the support bracket 64B is installed, so that the wire 20 is applied. It is possible to obtain the load value (load due to pulling) acting on ). In other words, the load applied to the first fixing pulley 62 with the load cell 64A is applied when a load pulled in the seabed direction acts on the wire 20. At this time, when the support bracket 64B is movably coupled to the fixed bracket 12 by the fastening means, the support bracket 64B moves upward by the wire 20 to press the load cell 64A. The load cell 64A may be configured to convert the pressing force into an electrical signal and transmit it to the control unit 90.

As such, the wire 20 is pulled in the subsea direction, and as the working rod 74 of the tension adjusting unit 70 rises, the wire B on the main pulley 50 side and the wire C on the tension adjusting portion 70 side ) When the loads of both wires BC are simultaneously transferred to the first fixed pulley 62 as they move upward simultaneously, the control unit 90 divides the load value detected by the load cell 64A by 1/2 and the main pulley It is obtained by the tension of the wire B on the (50) side, that is, the load value.

In addition, the method in which the load detecting means 64 obtains a load value may be variously configured. That is, the electrical signal measured by the load cell 64A may be configured to convert the pressure converter into a load value and transmit it to the control unit 90, and the control unit 90 receives the electrical signal for the load detected by the load cell 64A. It can also be obtained by converting to a load value.

The tension adjusting unit 70, as shown in FIG. 1, lifts the wires C, D, E, and F upwards or downwards between the fixed support 60 and the winch 40, thereby lowering the wire A, For adjusting the tension of B, C, D, E, F), to the cylinder 72 and the working rod 74 and the cylinder 72 with the working rod 74 reciprocating linearly by the fluid Each is installed and comprises two or more pulleys for tension control 76 for rotationally supporting the wire 20. That is, the tension adjusting unit 70 is disposed between the fixed support 60 and the winch 40 to be configured to strain or relieve the tension by the wire 20 by the operation of the cylinder 72.

The cylinder 72 pushes up the working rod 74 as the pressure generating unit 80 pressurizes the fluid (hydraulic oil) (withdraws the working rod) or lowers the working rod 74 as the fluid is depressurized ( Works). The cylinder 72 may adjust the tension of the wires C, D, E, and F by moving the pulley 76 for tension adjustment supporting the wires C, D, E, and F in the vertical direction.

The pulley for tension adjustment 76 is, as shown in Figure 1, the wire (C) and the second fixed pulley (76B) supported by the first fixed pulley (62) at a position higher than the first fixed pulley (62) The first flow pulley 76A for supporting the supported wire D and the wire D installed on the cylinder 72 side and supported by the first flow pulley 76A at a lower position than the first flow pulley 76A ) And the second fixed pulley 76B for supporting the wire E supported by the second flow pulley 76C, and the second fixed pulley 76B and the winch at the same height as the first flow pulley 76A. 40) is made of a second flow pulley 76C for supporting the wires E and F supported.

As such, the pulley for tension control 76 rotates and supports a portion of the wire 20 between the fixed support portion 60 and the winch 40 (C, D, E, F), so that the first operation of the cylinder 72 is performed. ,2 It is possible to adjust the tension of the wires (C, D, E, F) while the flow pulleys (76A, 76C) rise and fall. That is, when the pulley 76 for tension control moves upward while the winch 40 is stopped and the equipment is connected to the end of the wire A, the tension of the wires C, D, E, and F is tightly tensioned, When moving downward, the tension of the wires (C, D, E, F) is loosened.

On the other hand, the tension adjustment unit 70 of this structure is a pull of the wire (A) by the operation of the cylinder 72 for adjusting the tension of the wire (C, D, E, F) is made of a fluid (air or hydraulic oil) When a sudden impact acts on the working rod 74 due to the load, the compressed air in the accumulator 86 is compressed, thereby absorbing the sudden impact and buffering.

As shown in FIG. 1, the pressure generating unit 80 is configured to supply pressure to the cylinder 72 to apply pressure or remove pressure to pressurize the fluid to reduce pressure, and the pressure applied to the cylinder 72 It is provided with a pressure sensor 82 for measuring the.

The pressure generating portion 80, the compressed air generating portion 84, receiving the fluid is connected to one cylinder 72, the other is connected to the compressed air generating portion 84, the pressure detection inside The accumulator 86 is provided with the sensor 82. At this time, inside the accumulator 86, the pressurized piston 86A for pressurizing the fluid with the compressed air supplied from the compressed air generator 84 may be provided. Therefore, when the compressed air is supplied to the upper portion of the accumulator 86 while the hydraulic oil is accommodated in the lower portions of the cylinder 72 and the accumulator 86, the pressurized piston 86A moves downwards and moves the hydraulic oil toward the cylinder 72. Since the pressure inside the cylinder 72 is increased by pushing and is pushed, the working rod 74 is pulled out and rises. When the compressed air is discharged, the pressing force for pressing the pressurized piston 86A is lost, so that the inside of the cylinder 72 is lost. The pressure is lowered and the operation rod 72 is drawn in and down. As described above, when the operation rod 72 performs the intake operation, the wires C, D, E, and F are in a state of pressing the first and second flow pulleys 76A, 76C downward, so the operation rod 72 is smooth. Can descend.

Here, the pressure piston 86A may not be provided inside the accumulator 86.

On the other hand, the compressed air generating unit 84, the air compressor (84A) having a main valve (B1), and at least one or more compressed air storage containers for storing compressed air generated by the air compressor (84A) ( 84B), the first connecting line (84C-1) connecting the air compressor (84A) and the air accumulator (86), and the compressed air storage container (84B) and the main connecting line (84C-1) 2 Connection line (84C) including a connection line (84C-2), the first valve (B2) provided in the second connection line (84C-2), the second connection line (84C-2) and the main valve A second valve B3 provided in the first connection line 84C-1 between (B1), and a first connection line 84C-1 between the second connection line 84C-2 and the accumulator 86 ) Consisting of a third valve (B4) provided between the opening and closing portion (B) that is operated and controlled by the control unit 90, and the accumulator 86 or the second connection line (84C-2) and the accumulator (86) It is provided in the first connection line (84C-1) includes a discharge valve (87) that is operated and controlled by the control unit 90 to discharge the compressed air inside the accumulator (86).

On the other hand, between the compressed air storage container (84B) and the air compressor (84A), that is, between the second valve (B3) and the main valve (B1), for temporarily storing the compressed air generated from the air compressor (84A) Supplementary compressed air storage container 84D may be provided with a fourth valve B5. Supplementary compressed air storage container 84D serves to supply compressed air when the pressure of the compressed air storage container 84B is lowered after temporarily storing the compressed air.

The compressed air generating unit 84 is controlled by the control unit 90, temporarily stores compressed air generated in the air compressor 84A in the compressed air storage container 84B, and then controls the opening/closing unit B to control the compressed air. The compressed air of the storage container 84B can be selectively supplied to the accumulator 86 to pressurize the cylinder 72 or the compressed air can be discharged to the discharge valve 87 to reduce the pressure of the cylinder 72.

The control unit 90 controls the operation of the cylinder 72 by pressurizing or releasing the fluid (hydraulic oil) accommodated in the accumulator 86 with the compressed air generated by the compressed air generating unit 84. It is configured to control the tension of the wire 20 by controlling the pressure of the pressure generating unit 80 based on the load value of the wire 20 sensed by the detection means 64 and the pressure value sensed by the pressure sensor 82. do.

Then, the control unit 90 includes a winch control means 92 for automatically controlling the winch 40. The winch control means 92 detects this when the first and second flow pulleys 76A and 76C supporting the wires C, D, E, and F rise to the maximum, and the winch 40 is wound. And, the first and second flow pulleys (76A, 76C) for the winch 40 to be released when the maximum operation, the operating end (92A) provided at the top of the operation rod (74), In the upper region of the bracket 92B, which is installed perpendicularly to the base frame 11, on which the cylinder 72 is installed, and the bracket 92B corresponding to a position lower than the maximum take-off stroke (rising stroke) position of the working rod 74. The winding control switch 92C, which is installed and switched by the operation stage 92A, and is installed and operated in the lower region of the bracket 92B corresponding to a position higher than the minimum withdrawal stroke (falling stroke) position of the operation rod 74 It comprises a release control switch (92D) that is switched by the stage (92A). Therefore, when the operation end 92A is switched to the winding control switch 92C by the rising operation of the operation rod 74, the winch 40 winds the wire 20 by winding operation, and the operation rod 74 ) When the operating end 92A is switched by being in contact with the release control switch 92D due to the lowering operation of the ), the winch 40 is released by the unlocking operation, thereby releasing the wire 20.

Meanwhile, the control unit 90 operates and controls the air compression unit 84A, the opening/closing unit B, and the discharge valve 87 when controlling the pressure generating unit 80 to selectively compress compressed air ( Supply to 86) to pressurize the cylinder 72 or discharge the compressed air in the accumulator 86 to reduce the pressure inside the cylinder 72. For example, during the pressurization operation, the third open/close valve B4 is opened and the discharge valve 87 is closed, and the main valve B1 and the second open/close valve B3 are opened or the first open valve B2 is opened. Can be opened. When the pressure is reduced, the first opening valve B2 and the main valve B1 or the second opening/closing valve B3 are closed and the discharge valve 87 can be opened. Of course, when the discharge valve 87 is provided in the accumulator 87, the third open/close valve B4 is closed and the discharge valve 87 is opened.

The operation of the pressure-sensitive compensation device 10 according to the present invention configured as described above will be described.

As shown in Figures 1 and 2, when the wire 20 is connected to the equipment of the seabed, when the hull is raised by a tsunami or waves, or when algae in the water acts on the wire, the wire A has a seabed A pull load is generated in the direction. In this way, when the pulling load occurs on the wire A, when the winch 40 is wound or the wire 20 is maintained in a fixed state, the wire A may be damaged by the pulling load.

Accordingly, the control unit 90 obtains a load value acting on the wires A and B from the load sensing means 64 provided on the fixed support 60 when the wire A is pulled in the seabed direction, and the fixed support 60 ) And the internal pressure of the cylinder 72 supporting the wires C, D, E, F between the winch 40 (actually the pressure of hydraulic oil useful inside the accumulator 86 or compression to pressurize the hydraulic oil) Pressure of air) to obtain a pressure value from the pressure sensor 82. By comparing the pulling load value and the pressure value thus obtained, when the load value is greater than the pressure value, the pressure generating unit 80 controls the cylinder 72 to operate under reduced pressure. That is, when the load value to which the wire A is pulled is greater than the pressure pack, the discharge valve 87 is opened to lower the pressure of the compressed air supplied to the accumulator 86 to decompress the cylinder 72. As such, the cylinder 72 lowers the working rod 74 according to the depressurization of the accumulator 86 to relieve the tension of the wires B, C, D, E, and F according to the pulling of the wire A. Order. That is, when the pulling load acts on the wire (A) connected to the subsea equipment, the tension of the wire (20) is relieved by alleviating the tension of the wires (B, C, D, E, F) belonging to the pressure-sensitive compensation device (10). Is maintained at a constant tension.

On the other hand, when the wire 20 is connected to the equipment of the seabed, when the hull descends due to a swell or a wave, or when an algae in the water does not act on the wire, a pulling load occurs in the wire A in the seabed direction. It does not or the pulling load value becomes small. (Based on the other pulling load value when the hull rises due to waves or swells, or when the tide acts on the wire.) Thus, when the pulling load on the wire A is released, the wire 20 ) Is maintained in a loose state, a very large tensile impact load may act on the wire 20 when a sudden pulling load such as the wire 20 is twisted or the hull rises again.

Accordingly, the control unit 90 obtains the load values acting on the wires A and B from the load sensing means 64, and the wires C, D, E, and F between the fixed support 60 and the winch 40 are obtained. The pressure value of the internal pressure of the cylinder 72 supporting (actually, the pressure of hydraulic oil useful in the accumulator 86 or the pressure of compressed air to pressurize the hydraulic oil) is obtained from the pressure sensor 82. When the load value is smaller than the pressure value, the control unit 90 controls the pressure generating unit 80 to pressurize the cylinder 72. That is, when the load value at which the wires A and B are pulled is smaller than the pressure pack, the discharge valve 87 is closed and the compressed air is supplied to the accumulator 86 to increase the pressure to pressurize the cylinder 72. As such, the cylinder 72 raises the working rod 74 according to the pressurization of the accumulator 86, and the tension of the wires B, C, D, E, and F according to the release of the pull of the wires A, B Strengthen the state. That is, when the pulling load does not act on the wire (A) connected to the subsea equipment, the wire (20) is strengthened to strengthen the tension state of the wires (B, C, D, E, F) belonging to the pressure-compensating compensation device (10). ) To keep the tension constant throughout.

3 of the accompanying drawings is a schematic configuration diagram showing another embodiment of the pressure generating unit shown in FIG. 1.

3, the pressure generating unit 80 may be configured as follows.

The pressure generating unit 80 is provided with a first fluid opening/closing valve 89A controlled by the control unit 90, and a fluid storage container 89B connected to the cylinder 72 and controlled by the control unit 90. A bypass container (89D) provided with a second fluid opening and closing valve (89C) and connected to the fluid storage container (89B), and is installed between the fluid storage container (89B) and the bypass container (89D), the fluid storage container ( 89B) is configured to include a hydraulic pump (89E) for pressurizing the fluid (hydraulic oil) accommodated in the cylinder (72). The pressure generating unit 80 having such a structure is operated as follows by the control unit 90.

That is, when the operation rod 74 is drawn out, the first fluid on/off valve 89A is opened, the second fluid on/off valve 89C is closed, and then the hydraulic pump 89E is operated, and the operation rod 74 is operated. In the case of inlet operation, the operation of the hydraulic pump 89E is stopped and the second fluid opening/closing valve 89C is opened to allow the hydraulic oil of the fluid storage container 89B to move to the bypass container 89D, thereby causing the fluid storage container 89B. It is operated to lower the pressure.

According to the pressure generating unit 80, it is possible to pressurize or depressurize the pressure of the cylinder 72 with a simple structure.

As described above, the pressure-compensated compensation device 10 according to the present invention always has a constant and uniform tension in the wire 20, based on the load value acting on the wire 20 by waves, swells, or tides. By being maintained, it is possible to efficiently control and manage the wire 20 connecting the submarine equipment and the hull.

In the foregoing, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and it is common knowledge in the field of this technology that various modifications and modifications can be made without departing from the spirit and scope of the present invention. It is obvious to those who have it. Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should belong to the claims of the present invention.

10: pressure-sensitive compensation device 20,A,B,C,D,E,F: wire
30: underwater cable 40: winch
50: main pulley 60: fixed support
70: tension control unit 80: pressure generating unit
90: control unit

Claims (10)

It is to be installed on the hull including a winch for lifting or launching a wire combined with an underwater cable connected to a submarine equipment, and for controlling the tension of the wire according to a change in load applied to the wire,
A main pulley for rotationally supporting the wire;
It is located between the main pulley and the winch and has a first fixing pulley for rotationally supporting the wire supported by the main pulley at a position lower than the main pulley, and acts on the first fixing pulley by the wire. A fixed support unit having a load sensing means for sensing a load;
A cylinder having an operating rod that reciprocates linearly by the pressure of the fluid, and two or more pulleys for adjusting tension to be installed on the operating rod and the cylinder to rotate and support the wire, between the fixed support and the winch. A tension adjuster arranged to tension the wire or relieve tension by the operation of the cylinder;
A pressure generator configured to pressurize or depressurize the cylinder, and has a pressure sensor for measuring the pressure applied to the cylinder; And
And a control unit for controlling the tension of the wire by controlling the pressure of the pressure generating unit based on the load value of the wire sensed by the load sensing means and the pressure value sensed by the pressure sensor,
The control unit,
It is provided with a winch control means for controlling the winch, the winch control means,
An operation end provided on an upper end of the operation rod;
A bracket installed perpendicular to the base frame on which the cylinder is installed;
A winding control switch installed in an upper region of the bracket corresponding to a position lower than a maximum withdrawal stroke position of the operating rod and switched by the operating end; And
It characterized in that it comprises a release control switch is installed in the lower region of the bracket corresponding to a position higher than the minimum withdrawal stroke position of the operating rod is switched by the operating end,
Pressure-sensitive compensator for balanced pulling of underwater cables. According to claim 1,
The underwater cable,
It is characterized in that it is integrated and fixed to the wire so that the load does not act on itself.
Pressure-sensitive compensator for balanced pulling of underwater cables. According to claim 1,
The load sensing means,
A load cell fixedly installed on the top of the fixed frame; And the first fixing pulley is coupled to the bottom and the top is made of a support bracket fixed to the load cell,
Characterized in that it is configured to sense the load acting on the first fixing pulley with the load cell when a load pulled in the seabed direction acts on the wire,
Pressure-sensitive compensator for balanced pulling of underwater cables. According to claim 1,
The tension adjustment pulley,
A first flow pulley for supporting the wire supported by the first fixed pulley at a position higher than the first fixed pulley;
A second fixed pulley installed on the cylinder side to support the wire supported by the first flow pulley at a position lower than the first flow pulley; And
Characterized in that it consists of a second flow pulley for supporting the wire supported by the second fixed pulley and the winch at the same height as the first flow pulley,
Pressure-sensitive compensator for balanced pulling of underwater cables. According to claim 1,
The pressure generating unit,
Compressed air generator; And
Receiving a fluid, one side is connected to the cylinder, the other is connected to the compressed air generator, the inside includes a pressure accumulator provided with the pressure sensor,
The control unit is characterized in that to control the operation of the cylinder by pressurizing or releasing the fluid contained in the accumulator with the compressed air generated by the compressed air generating unit,
Pressure-sensitive compensator for balanced pulling of underwater cables. The method of claim 5,
Inside the accumulator,
It characterized in that the pressurized piston is provided for pressurizing the fluid with the compressed air supplied from the compressed air generating unit,
Pressure-sensitive compensator for balanced pulling of underwater cables. The method of claim 5,
The compressed air generation unit,
An air compressor having a main valve;
At least one compressed air storage container for storing compressed air generated by the air compressor;
A connection line including a first connection line connecting the air compressor and the air accumulator, and a second connection line connecting the compressed air storage container and the main connection line;
The first valve provided in the second connection line, the second valve provided in the first connection line between the second connection line and the main valve, and the first between the second connection line and the accumulator It consists of a third valve provided on the connection line opening and closing operation is controlled by the control unit; And
It characterized in that it comprises a discharge valve which is provided on the first connection line between the accumulator or the second connection line and the accumulator and is controlled by the control unit to discharge compressed air inside the accumulator,
Pressure-sensitive compensator for balanced pulling of underwater cables. The method of claim 7,
Between the compressed air storage container and the air compressor,
The supplementary compressed air storage container for temporarily storing compressed air generated from the air compressor is provided with a fourth valve,
Pressure-sensitive compensator for balanced pulling of underwater cables. According to claim 1,
The pressure generating unit,
A fluid storage container provided with a first fluid opening/closing valve controlled by the control unit and connected to the cylinder;
A bypass container provided with a second fluid opening/closing valve controlled by the control unit and connected to the fluid storage container; And
It is installed between the fluid storage container and the bypass container, and includes a hydraulic pump for pressurizing the fluid contained in the fluid storage container toward the cylinder,
The control unit operates the hydraulic pump after opening the first fluid opening/closing valve and closing the second fluid opening/closing valve when the operation rod is withdrawn, and operates the hydraulic pump when operating the operation rod. And stopping the opening of the second fluid opening/closing valve to control the pressure of the fluid storage container to decrease.
Pressure-sensitive compensator for balanced pulling of underwater cables. delete

Images