CN216390458U - Constant-tension cable control device and system for shipborne shore power system - Google Patents
Constant-tension cable control device and system for shipborne shore power system Download PDFInfo
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- CN216390458U CN216390458U CN202122127827.7U CN202122127827U CN216390458U CN 216390458 U CN216390458 U CN 216390458U CN 202122127827 U CN202122127827 U CN 202122127827U CN 216390458 U CN216390458 U CN 216390458U
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- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 3
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Abstract
The utility model discloses a cable constant tension control device and a cable constant tension control system of a shipborne shore power system, wherein the cable constant tension control device of the shipborne shore power system comprises a tension sensing unit, a cable reel, a motor and a control unit which are arranged on a ship, a transmission mechanism is arranged between the cable reel and the motor, the tension sensing unit is contacted with a cable led out from the cable reel, the input end of the control unit is connected with the output end of the tension sensing unit, and the output end of the control unit is connected with the control end of the motor, so that the motor can drive the cable reel to reel the cable through the transmission mechanism after the control unit receives a feedback signal of the tension sensing unit. The utility model can automatically adjust the cable winding and unwinding according to the water level change and simultaneously avoid the influence on passing ships.
Description
Technical Field
The utility model relates to a shipborne shore power system, in particular to a cable constant tension control device and system of the shipborne shore power system.
Background
The shore power of the ship is that the ship generator is stopped to be used for supplying power by using a shore power supply during the berthing of the ship. Present boats and ships bank electricity system includes bank base part and on-board part, as shown in fig. 1, bank base part is including series connection's high-pressure inlet wire cubical switchboard in proper order, vary voltage frequency conversion equipment, switch cabinet and high-pressure bank electricity junction box of being qualified for the next round of competitions, on-board part is including series connection's high-voltage cable rolling car in proper order, switch board and on-board transformer are connected to on-board high-voltage bank electricity, on-board high-voltage bank electricity is connected the switch board and is passed through the high-voltage cable of high-voltage cable rolling car and can dismantle with high-pressure bank electricity junction box and be connected, it provides convenience to change the bank electricity during to the boats and ships are berthed.
Considering that the water level changes and the ship floats along with water flow, the length of a high-voltage cable connecting the ship and a shore-based part can be changed at any time, manual guard is needed at present, the cable is controlled to be wound and unwound through manpower or manual control of rotation of a motor, the labor cost is increased, and the risk of cable breakage or deformation during misoperation also exists.
In addition, the high-voltage cable is generally overhead or floating on the water surface at present, and is easy to influence passing ships between a ship to be powered and a shore base.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: aiming at the technical problems in the prior art, the utility model provides a cable constant tension control device and system for a shipborne shore power system, which can automatically adjust the cable winding and unwinding according to the water level change and simultaneously avoid the influence on passing ships.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
the utility model provides a ship-borne shore power system's permanent tension control device of cable, is including installing tension sensing unit, cable reel, motor and the control unit on boats and ships, be equipped with drive mechanism between cable reel and the motor, the cable contact that tension sensing unit and cable reel were drawn forth, the input of the control unit and tension sensing unit's output are connected, the output of the control unit and the control end of motor are connected for behind the control unit received tension sensing unit's feedback signal, the messenger enables the motor and drives cable reel through drive mechanism and receive and release the cable.
Preferably, the tension sensing unit comprises a first pulley and a second pulley provided with a pressure sensor, the first pulley and the second pulley are respectively arranged on two sides of a cable led out from the cable reel, the cable is respectively contacted with the first pulley and the second pulley, and an output end of the pressure sensor is connected with an input end of the control unit.
Preferably, the first pulleys are 2 and the first pulleys are fixed pulleys, the second pulleys are 1 and the second pulleys are movable pulleys, and the fixed pulleys are respectively arranged on two sides of the movable pulleys.
Preferably, the tension sensing unit further comprises a displacement sensor, a detection end of the displacement sensor faces the second pulley, and an output end of the displacement sensor is connected with an input end of the control unit.
Preferably, the first pulley and the second pulley are fixed pulleys respectively.
Preferably, the cable reel device further comprises a winding drum used for accommodating the cable reel, and a water baffle is arranged above the winding drum.
Preferably, the motor comprises a frequency converter and a variable frequency motor, and the output end of the control unit is connected with the variable frequency motor through the frequency converter.
Preferably, the cable on the cable reel is externally sleeved with a protective layer.
The utility model further provides a shipborne shore power system which comprises a shore base part and a shipborne part, wherein the shipborne part comprises a box-type transformer and a cable constant tension control device, the cable constant tension control device is any cable constant tension control device of the shipborne shore power system, and the box-type transformer is connected with the shore base part through the cable constant tension control device.
Preferably, the shore-based part comprises a submarine cable arranged on the water bottom and a junction box, and the cable led out from the cable reel of the shipborne part is connected with the submarine cable through the junction box.
Compared with the prior art, the utility model has the advantages that:
1. according to the utility model, the ship is provided with the tension sensing unit, the control unit and the motor, and the motor is controlled to rotate to reel and unwind the cable according to the tension change of the cable led out by the cable reel, so that the length of the cable led out by the cable reel can be automatically adjusted according to the water level change.
2. The tension sensing unit can adopt various forms, the pressure sensor and the pulley can be prevented from being damaged when the fixed pulley and the movable pulley provided with the pressure sensor are combined, and the structure can be simplified and the cost can be saved when the fixed pulley and the fixed pulley provided with the pressure sensor are combined.
3. The cable reel is arranged in the winding drum, when the cable reel collects the cable, water carried by the cable is retained in the winding drum to protect other electrified devices from entering water, and in addition, the water baffle is arranged above the winding drum to avoid water accumulation of the winding drum caused by rain or wind waves.
4. According to the utility model, the shore-based part is provided with the water bottom cable and the junction box at the water bottom, and the cable led out from the cable reel of the shipborne part is connected with the junction box, so that when a ship is powered by using a shore power supply, the cable can be ensured to sink into the water bottom and not float on the water surface, and the passing of other ships is not influenced.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a tension sensing unit according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a tension sensing unit according to a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Illustration of the drawings: 1-a tension sensing unit, 2-a cable reel, 3-a motor unit and 4-a control unit.
Detailed Description
The utility model is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the utility model.
Example one
As shown in fig. 1, the present embodiment provides a constant tension control device for a cable of a ship-mounted shore power system, including a tension sensing unit 1, a cable reel 2, a motor unit 3, and a control unit 4 installed on a ship, a transmission mechanism is provided between the cable reel 2 and the motor unit 3, the tension sensing unit 1 contacts with a cable led out from the cable reel 2, an input end of the control unit 4 is connected with an output end of the tension sensing unit 1, and an output end of the control unit 4 is connected with a control end of the motor unit 3.
The working principle of the structure is as follows: when the water level rises, the cable led out by the cable reel 2 is loosened, the signal fed back by the tension sensing unit 1 is gradually reduced, the control unit 4 enables the motor unit 3 to drive the cable reel 2 to take back the cable through the transmission mechanism until the signal fed back by the tension sensing unit 1 keeps unchanged, when the water level falls, the cable led out by the cable reel 2 is tightened, the signal fed back by the tension sensing unit 1 is gradually increased, and the control unit 4 enables the motor unit 3 to drive the cable reel 2 to pay out the cable through the transmission mechanism until the signal fed back by the tension sensing unit 1 keeps unchanged.
Through the structure, after the control unit 4 receives the feedback signal of the tension sensing unit 1, the enabling motor unit 3 drives the cable reel 2 to take up and pay off the cable through the transmission mechanism. Therefore, the length of the cable led out by the cable reel 2 can be automatically adjusted according to the water level change, the labor cost is effectively saved, and the loss caused by misoperation is avoided.
In this embodiment, the transmission mechanism may take various forms according to actual needs, including but not limited to:
the driving gear is connected with a rotating shaft of the motor unit 3, and the driven gear is coaxially connected with the cable reel 2;
the driving wheel is connected with the driven wheel through the belt, the driving wheel is connected with a rotating shaft of the motor unit 3, and the driven wheel is coaxially connected with the cable reel 2;
the connecting rod, the axis of rotation of motor unit 3 passes through connecting rod and cable reel 2 coaxial coupling.
As shown in fig. 2, the tension sensing unit 1 in this embodiment includes a first pulley 11 and a second pulley 12 provided with a pressure sensor, the first pulley 11 and the second pulley 12 are respectively disposed at two sides of a cable drawn from the cable reel 2, the cable is respectively in contact with the first pulley 11 and the second pulley 12, and an output end of the pressure sensor is connected with an input end of the control unit 4. First pulley 11, second pulley 12 lead for the cable, avoid the cable to receive and release the in-process and appear the winding or the condition of knoing, and the cable is prolonged first pulley 11, when second pulley 12 receive and releases simultaneously, produces certain pressure to first pulley 11, second pulley 12, and pressure is less when the cable relaxes, and pressure is great when the cable is tight to pressure sensor on the second pulley 12 sends the pressure that detects for control unit 4 in real time.
As shown in fig. 2, in this embodiment, the first pulleys 11 are 2 and the first pulleys 11 are fixed pulleys, the second pulleys 12 are 1 and the second pulleys 12 are movable pulleys, the fixed pulleys are respectively disposed on two sides of the movable pulley, in fig. 2, the two fixed pulleys are disposed below the cable, the movable pulley is disposed above the cable, the movable pulley can be used for hanging a heavy object or bending a section of cable between the two fixed pulleys by using self weight, and it can be known through stress analysis that the tension of the cable is different so that the bending degree of the bending part is different, the pressure T of the contact surface between the movable pulley and the cable can be changed, and the pressure sensor can detect the tension of the cable more accurately. In addition, due to the characteristics of the movable pulley, when the bending degree of the bending part is changed, the movable pulley is displaced, so that the pulley is prevented from being extruded and damaged under the condition of overlarge pressure.
In this embodiment, for avoiding other electrified devices on the boats and ships to intake, cable reel 2 is installed in the reel, and when cable reel 2 was collected the cable, the water that the cable was taken was retained in the reel, protected other electrified devices, in addition, the reel top is equipped with the breakwater, avoids raining or stormy waves to cause reel ponding.
In this embodiment, the outside cover of cable on the cable reel 2 is equipped with the protective layer, specifically is the wire net, ensures that the cable can not damage after the collision.
As shown in fig. 1, in this embodiment, the motor unit 3 includes a frequency converter and a variable frequency motor, and an output end of the control unit 4 is connected to the variable frequency motor through the frequency converter, so as to adjust a retraction speed according to an actual situation when a cable is retracted, increase applicability, and avoid a situation that a cable pulling-off or a cable deformation is caused when a cable retraction speed is higher than a water level rising speed or a cable releasing speed is lower than a water level falling speed.
Example two
The embodiment is substantially the same as the first embodiment, except that in this embodiment, the tension sensing unit 1 further includes a displacement sensor, a detection end of the displacement sensor faces the second pulley 12, and an output end of the displacement sensor is connected with an input end of the control unit, as shown in fig. 2, since the second pulley 12 is a movable pulley, when the water level rises, the cable drawn from the cable reel 2 is loose, the position of the second pulley 12 falls, the control unit 4 enables the motor unit 3 to drive the cable reel 2 to take back the cable through the transmission mechanism until the second pulley 12 returns to the original position, when the water level falls, the cable drawn from the cable reel 2 is tight, the position of the second pulley 12 rises, and the control unit 4 enables the motor unit 3 to drive the cable reel 2 to take out the cable through the transmission mechanism until the second pulley 12 returns to the original position. Therefore, in this embodiment, the position change of the second pulley 12 can be detected in time by the displacement sensor, so that the feedback signal of the tension sensing unit 1 contains various information, thereby providing a more accurate judgment basis for the control unit 4.
EXAMPLE III
As shown in fig. 3, the present embodiment is substantially the same as the first embodiment, except that in the present embodiment, the number of the first pulley 11 and the second pulley 12 is 1 and each is a fixed pulley. In fig. 3, two fixed pulleys are respectively arranged above and below the cable, the cable is divided into a first horizontal segment, a bending segment and a second horizontal segment by the two fixed pulleys, the first pulley 11 is arranged at the bending part between the first horizontal segment and the bending segment, the second pulley 12 is arranged at the bending part between the second horizontal segment and the bending segment, and the tension of the cable is different, so that the pressure T borne by the second pulley 12 is changed, and the pressure sensor can accurately detect the tension of the cable. Compared with the tension sensing unit 1 of the first embodiment, the tension sensing unit 1 of the first embodiment has a simplified structure and reduces cost.
Example four
This embodiment proposes a ship-borne shore power system, including shore base part and ship-borne part, as shown in fig. 4, in this embodiment, the ship-borne part includes box transformer and cable constant tension controlling means, the cable constant tension controlling means is the cable constant tension controlling means of the ship-borne shore power system of any one of embodiments one to three, box transformer passes through cable constant tension controlling means and shore base part connection.
In this embodiment, the shore base part adopts 10kV voltage power supply, for avoiding the in-process cable to boats and ships power supply to float on the surface of water, causes the influence to other boats and ships of passing, as shown in fig. 4, in this embodiment, the shore base part is including setting up in submarine cable at the bottom and through the insulating junction box of large-scale encapsulating, the cable that the cable reel 2 of shipborne part was drawn forth passes through junction box and submarine cable junction.
The operation steps of the shipborne shore power system of the embodiment are as follows:
(1) one end of a cable stored by the cable reel 2 is connected to a junction box at the bottom of the water, the other end of the cable is connected to the wire inlet position of the box-type substation, and electric energy is transmitted to shipboard electric equipment through a large-capacity slip ring assembly of the equipment;
(2) when the water level of the ship position changes or drifts along with wind and waves, the cable constant tension control device automatically takes up and takes down the cable, so that the tension of the cable is constant, and stable power supply is provided for the ship.
The foregoing is considered as illustrative of the preferred embodiments of the utility model and is not to be construed as limiting the utility model in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a ship-borne shore power system's permanent tension control device of cable, its characterized in that, including installing tension sensing unit (1), cable reel (2), motor element (3) and the control unit (4) on boats and ships, be equipped with drive mechanism between cable reel (2) and motor element (3), the cable contact that tension sensing unit (1) and cable reel (2) were drawn forth, the input of control unit (4) and the output of tension sensing unit (1) are connected, the output of control unit (4) and the control end of motor element (3) are connected for behind the feedback signal of control unit (4) receipt tension sensing unit (1), enable motor element (3) to drive cable reel (2) through drive mechanism and receive and release the cable.
2. The constant tension control device for cable of shipborne shore power system as claimed in claim 1, characterized in that said tension sensing unit (1) comprises a first pulley (11) and a second pulley (12) provided with a pressure sensor, said first pulley (11) and said second pulley (12) are respectively arranged at two sides of the cable led out from the cable reel (2), said cable is respectively contacted with said first pulley (11) and said second pulley (12), and the output end of said pressure sensor is connected with the input end of said control unit (4).
3. The cable constant tension control device of the shipborne shore power system as claimed in claim 2, wherein the number of the first pulleys (11) is 2 and the first pulleys (11) are fixed pulleys, the number of the second pulleys (12) is 1 and the second pulleys (12) are movable pulleys, and the fixed pulleys are respectively arranged at two sides of the movable pulleys.
4. The cable constant tension control device of an on-board shore power system according to claim 3, characterized in that the tension sensing unit (1) further comprises a displacement sensor, the sensing end of which is directed towards the second pulley (12), the output end of which is connected with the input end of the control unit (4).
5. The cable constant tension control device of the shipborne shore power system as claimed in claim 2, characterized in that said first pulley (11) and said second pulley (12) are respectively fixed pulleys.
6. The cable constant tension control device of the shipborne shore power system as claimed in claim 1, further comprising a winding drum for accommodating the cable reel (2), wherein a water baffle is arranged above the winding drum.
7. The cable constant tension control device of the shipborne shore power system as claimed in claim 1, characterized in that said motor unit (3) comprises a frequency converter and a variable frequency motor, and the output end of said control unit (4) is connected with the variable frequency motor through the frequency converter.
8. The cable constant tension control device of the shipborne shore power system as claimed in claim 1, characterized in that a protective layer is sleeved outside the cable on the cable reel (2).
9. A shipborne shore power system, which comprises a shore-based part and a shipborne part, and is characterized in that the shipborne part comprises a box-type transformer and a cable constant tension control device, the cable constant tension control device is the cable constant tension control device of the shipborne shore power system disclosed by any one of claims 1 to 8, and the box-type transformer is connected with the shore-based part through the cable constant tension control device.
10. The shipborne shore power system according to claim 9, characterized in that said shore based section comprises a submarine cable arranged at the water bottom and a junction box, and the cable from the cable reel (2) of said shipborne section is connected with the submarine cable through the junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122127827.7U CN216390458U (en) | 2021-09-02 | 2021-09-02 | Constant-tension cable control device and system for shipborne shore power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122127827.7U CN216390458U (en) | 2021-09-02 | 2021-09-02 | Constant-tension cable control device and system for shipborne shore power system |
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| CN216390458U true CN216390458U (en) | 2022-04-26 |
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| CN202122127827.7U Active CN216390458U (en) | 2021-09-02 | 2021-09-02 | Constant-tension cable control device and system for shipborne shore power system |
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- 2021-09-02 CN CN202122127827.7U patent/CN216390458U/en active Active
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