Power supply device

Abstract

To provide a power supply apparatus readily connectable to and detachable from a CVT power supply cable which is heavy and hard.SOLUTION: A power supply apparatus 100 comprises: a box-shaped housing 1; a plate-shaped body 7 provided inside the housing 1 in a manner vertical with respect to a ground surface 40; a breaker circuit section 8 provided in the plate-shaped body 7; and a power-supply terminal section 3 provided inside the housing 1 to receive power from the breaker circuit section 8 and supplying the power to a power supply cable 30 to be provided below the breaker circuit section 8. The power-supply terminal section 3 has: a slope section 4 inclined downward from the outside to the inside of the housing 1; and a pin-plug connection section 5 for connecting the power-supply cable 30 having a pin plug, perpendicularly to the slope section 4.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a power supply device.

Background Art

[0002] Conventionally, power has been supplied to ships such as shore-connected coal ash carriers. A power supply device for supplying power to a coal ash carrier or the like is used. In order to be compatible with the entry of a resource and equipment ship, it is desired to quickly complete the installation of a power supply cable connecting the power supply device and the ship. Conventionally, a cross-linked polyethylene insulated vinyl sheath cable (hereinafter referred to as a CVT cable) has been used as the power supply cable, and a general bolt connection has been adopted as the connection method of the power supply cable.

[0003] For example, Patent Document 1 discloses a technique in which a power supply cable is fixed to a terminal board with bolts in a method of supplying power from a general land high-voltage transmission line to a ship.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique disclosed in Patent Document 1, since the CVT cable is heavy and rigid, handling is poor, many personnel are required for deployment and storage work, and the work is heavy labor. Also, in the case of bolt connection, labor and time have been required each time the thick and rigid cable is connected and disconnected.

[0006] An object of the present invention is to provide a power supply device that can easily connect and disconnect a heavy and rigid large-capacity electric cable. [Means for solving the problem]

[0007] To achieve the above objective, a power supply device according to one aspect of the present invention comprises a box-shaped housing, a plate-shaped body provided vertically to the ground inside the housing, a breaker circuit provided on the plate-shaped body, and a power supply terminal provided inside the housing that receives power from the breaker circuit and supplies power to a power supply cable, provided below the plate-shaped body. The power supply terminal has an inclined portion that slopes downward from the outside to the inside of the housing, and a pin plug connection portion for connecting a power supply cable having a pin plug perpendicularly to the inclined portion. [Effects of the Invention]

[0008] According to the present invention, a power supply device is provided that can be easily connected to and disconnected from heavy, rigid, high-capacity electrical cables. [Brief explanation of the drawing]

[0009] [Figure 1] This is a side view of the power supply device according to the present invention, and also shows the inside of the housing. [Figure 2] This is a side view showing the power supply device according to the present invention with a power supply cable connected, and also shows the inside of the housing 1. [Figure 3] This is a front view of the power supply device according to the present invention, and also shows the inside of the housing. [Figure 4] This is a front view of the power supply device according to the present invention, showing the external appearance of the housing. [Figure 5] This is a side view of the power supply device according to the present invention, showing the external appearance of the housing. [Figure 6] This is a side view of a modified example of the power supply device according to the present invention, and also shows the inside of the housing. [Figure 7] This is a side view of a conventional power supply device. [Modes for carrying out the invention]

[0010] Hereinafter, a power supply device 100 according to an embodiment of the present invention will be described with reference to the drawings. In each figure, the same components are denoted by the same reference numeral. When the same components are distinguished as a first component, a second component, etc., the reference numeral a, b, etc., is added.

[0011] Figure 1 shows the housing portion 1 of the power supply device 100 according to the present invention, and the inside of the housing portion 1. Figure 2 shows the power supply device 100 shown in Figure 1 with a power supply cable 30 having a pin plug 10a connected to it.

[0012] The power supply device 100 supplies power from the shore power wiring 20 to a ship (not shown) or the like. As shown in Figure 1, the power supply device 100 has a housing 1, a power supply terminal 3, a breaker circuit 8, and internal wiring 10.

[0013] The circuit breaker unit 8 is installed inside the housing unit 1. The circuit breaker unit 8 is installed on a plate-shaped breaker body 7 which is provided inside the housing unit 1 perpendicular to the ground 40. The circuit breaker unit 8 has circuit breaker terminals 9. One end of the circuit breaker terminal 9a is connected to the circuit breaker connection part 6 of the power supply terminal unit 3 through the internal wiring 10 of the housing. The power supply terminal unit 3 is provided below the circuit breaker unit 8. The other end of the circuit breaker terminal 9b is connected to the general land power wiring 20. The housing unit 1 is grounded through the earth wire 12.

[0014] The power supply terminal section 3 has an inclined section 4 that slopes from the outside to the inside of the housing section 1, and a pin plug connection section 5 that is connected to a power supply cable 30 having a pin plug 10a. The pin plug connection section 5 has a pin jack 5a and a bolt and nut section 5b attached to the pin jack 5a. The pin plug connection section 5 is provided on the inclined section 4 and connects to a power supply cable 30 (not shown) perpendicular to the inclined section 4. The power supply terminal section 3 has a breaker connection section 6. The inclined section 4 consists of, for example, two parallel plate-like bodies 4a and 4b. One plate-like body 4a holds the body of the pin jack 5a and has, for example, a circular hole. The bolt and nut section 5b attached to the pin jack 5a is fixed to the other plate-like body 4b.

[0015] Figure 3 is a front view of the power supply device 100, and also shows the internal layout. As shown in Figure 3, the housing 1 is provided with a breaker circuit access section 11a for accessing the breaker circuit section 8. When connecting or disconnecting the breaker in the breaker circuit section 8 of the power supply device 100, the worker accesses the breaker circuit section 8 through the breaker circuit access section 11a. In addition, a pin plug connection opening 11b is provided on one side of the housing 1 for accessing the pin plug connection section 5. The pin plug connection opening 11b is rectangular, as shown in Figure 3. The worker introduces the power supply cable 30 into the housing 1 through the pin plug connection opening 11b and inserts the pin plug 30a of the power supply cable 30 into the pin jack 5a of the pin plug connection section 5.

[0016] The upper end of the inclined portion 4 of the pin plug connector 5 is provided based on the upper end 11b1 of the pin plug connector opening 11b. For example, the upper end of the inclined portion 4 is provided at approximately the same height inside the housing 1 as the upper end 11b1 of the pin plug connector opening 11b. As shown in Figure 2, the inclined portion 4 may have a pair of plate-like bodies. The upper end of one plate-like body 4a may coincide with the upper end 11b1 of the pin plug connector opening 11b. One plate-like body 4a constituting the inclined portion 4 may be formed by bending a plate constituting the housing 1, and the bent portion may be the upper end 11b1 of the pin plug connector opening 11b. The upper end of the other plate-like body 4b may be provided near the upper end 11b1 of the pin plug connector opening 11b, and the breaker connector 6 that receives power from the breaker circuit 8 to the pin plug connector 5 may be provided near the upper end 11b1 of the pin plug connector opening 11b. With the above configuration, the pin plug connector 5 is located near the pin plug connector opening 11b, making it easy to insert the pin plug 30a of the power supply cable 30 into the pin plug connector 5. Furthermore, since the pin plug connector 5 is hidden at the back of the housing 1, a more reliable power supply device 100 that is less susceptible to rain is realized. Even in rainy weather, the pin plug 30a of the power supply cable 30 can be inserted into the pin jack 5a of the pin plug connector 5 without worrying about raindrops getting on it. This improves workability in rainy weather.

[0017] Compare with the conventional example shown in FIG. 7. FIG. 7 is a side view of the power feeding device 101 according to the conventional example, and the internal state is shown together. The power feeding device 101 according to the conventional example has the breaker circuit part 8 shown in FIGS. 1 and 2 similarly. The power feeding terminal part 31 of the power feeding device 101 according to the conventional example does not have the pin plug connection part 5 and has only connection by bolts and nuts. In the power feeding device 101 according to the conventional example, the crimp terminal provided at the tip of the power feeding cable 30 is fixed by bolts and nuts. Operations of passing the bolts through holes and closing the nuts are required. Since the power feeding cable 30 made of a CVT cable is heavy and rigid, the work is laborious and time-consuming. In contrast, in the power feeding device 100 according to the present invention, it can be connected with one touch by pin plug connection, and labor and time can be reduced.

[0018] The power feeding cable 30 generally extends from a ship along the ground to the power feeding device 100 and is connected to the power feeding device 100. As shown in FIG. 2, in the power feeding device 100, the breaker circuit part 8 is installed above in the power feeding device 100, and the pin plug connection part 5 is installed below. Therefore, the pin plug connection part 5 is installed near the ground 40, and the power feeding cable 30 is connected in a direction perpendicular to the inclined part 4, that is, in an obliquely upward direction. With the above configuration, as illustrated in FIG. 2, the curvature of bending the power feeding cable 30 can be made small. As a result, even if the power feeding cable 30 is a heavy and rigid CVT cable, it is possible to easily connect the pin plug 30b to the pin jack 5a.

[0019] Figs. 3 and 4 are front views of the power supply device 100, and Fig. 3 shows the internal state. Fig. 5 is a side view of the power supply device 100. As shown in Figs. 2 and 3, the housing part 1 has a breaker circuit part access part 11a and a pin plug connection part opening 11b. In Fig. 2, the upper end 11b1 and the lower end 11b2 of the rectangular pin plug connection part opening 11b are shown. In Fig. 3, the rectangular pin plug connection part opening 11b is shown. The power supply cable 30 is connected to the pin plug connection part 5 through the opening 11, for example. The pin plug connection part 5 is provided, for example, in two rows and three columns. Since Fig. 3 is a front view, it is shown obliquely from the diagonal direction with respect to the inclined part 4. Fig. 3 shows the view when an operator tries to connect the power supply cable 30 to the pin plug connection part 5, and the power supply device 100 has good visibility of the pin plug connection part 5 for the operator and good workability.

[0020] In the conventional example shown in Fig. 7, an operator has to view the power supply terminal part 3 in the housing part 1 from a direction horizontal to the electrode plate with holes for inserting bolts. Therefore, it is difficult for the operator to confirm the holes. On the other hand, in the power supply device 100 according to the present invention, the visibility of the pin plug connection part 5 is good. The power supply cable 30 can be connected more easily.

[0021] When the pin plug 30a of the power supply cable 30 is connected to the pin plug connection part 5 provided parallel to the ground instead of the inclined part 4, the power supply cable 30 bends in an S shape from the pin plug connection part 5 to the ground. Stress is applied to the bending part of the power supply cable 30, resulting in poor operability and possible reduction in the durability of the power supply cable 30. On the other hand, the power supply cable 30 in the power supply device 100 according to the present invention is almost only obliquely and horizontally from the pin plug connection part 5 to the ground as shown in the lower left of Fig. 2. Since the bending stress applied to the power supply cable 30 is small, good operability can be achieved and the reduction in the durability of the power supply cable 30 can be suppressed. The power supply device 100 does not require a support member for the power supply cable 30, which is considered necessary when the pin plug connection part is provided parallel to the ground. That is, it is possible to simply connect the power supply cable 30 to the pin plug connection part 5 and let it hang down.

[0022] As described above, the power supply device 100 offers high operability and reliability, allowing for the use of a rigid, heavy, high-capacity CVT cable as the power supply cable 30. For example, it can handle cases where the power supply is high and the thickness of the power supply cable 30 is 3 cm or more, or where the power supply current is 500 A or more, or where the mass is 3 to 4 tons per kilometer. In addition to a CVT cable, a flexible cabtyre cable may also be used as the power supply cable 30.

[0023] As shown in Figures 4 and 5, the power supply device 100 may have a breaker circuit cover 2a for the breaker circuit access section 11a and a pin plug connection section cover 2b for the pin plug connection opening 11b. In particular, it is preferable that the pin plug connection section cover 2b for the pin plug connection opening 11b is openable and closable and covers the inclined section 4. When the pin plug connection section cover 2b is openable and closable, the operator can easily connect the pin plug 10a of the power supply cable 30 to the pin jack 5a of the pin plug connection section 5. Since the inclined section 4 is covered, the pin plug connection section 5 mounted on the inclined section 4 is also covered. As shown in Figure 2, the breaker circuit cover 2a may be of a type in which a flat plate engages with the housing section 1. The pin plug connection section cover 2b may be of a type in which a handle 21 is attached, for example, as shown in Figures 4 and 5. The breaker circuit cover 2a and the pin plug connection section cover 2b function, for example, as a rain cover and a dust cover.

[0024] The pin plug 30a and pin jack 5a are equipped with waterproof covers, for example, made of silicone rubber. This prevents water droplets from adhering to the contact points between the pin plug 30a and pin jack 5a, improving the reliability of connection work in rainy weather.

[0025] (modified version) Figure 6 is a side view of a modified example of the above embodiment, a power supply device 102, which also shows the inside of the housing 1. The power supply device 100 has a projection 13 that protrudes diagonally downward from the housing 1. The inclined portion 41 is formed on the tip side of the projection 13. One plate-like body 41a that supports the pin jack 5a of the pin plug connection portion 5 in the inclined portion 41 closes the tip of the projection 13, and the other plate-like body 41a creates a spatially enclosed space within the housing 1.

[0026] The inclined portion 4 faces diagonally downwards and is located inside the housing portion 1 at the protruding portion 13. Therefore, the inclined portion 4 is less likely to be exposed to rain. In addition, the protruding portion 13 and one of the plate-like bodies 41a can function as a rainproof cover and a dustproof cover.

[0027] Because the pin plug connection section 5 can be positioned closer to the ground 40, the stress applied to the power supply cable 30 can be reduced, improving the durability of the power supply cable 30. In addition, the height from which the heavy power supply cable 30 needs to be lifted is reduced, improving work efficiency.

[0028] In the conventional example shown in Figure 7, when the power supply terminal 31 is observed from the front of the power supply device 101, that is, from the left side in Figure 7, the front of the power supply device 100 is open when the power supply cable 30 is attached. In rainy weather, in order to prevent rain from entering the housing 1, it becomes necessary to install a waterproof sheet 14 after the power supply cable 30 has been installed, for example, as shown in Figure 7. In contrast, in the power supply device 100 according to the present invention, the protruding part 13 and one of the plate-like bodies 4a serve as the waterproof sheet 14, so there is no need to install a waterproof sheet 14 again, thus improving work efficiency.

[0029] This disclosure allows for various embodiments and modifications without departing from the broad spirit and scope of the present invention. Furthermore, the embodiments described above are for illustrative purposes only and do not limit the scope of the present invention. That is, the scope of the present invention is indicated by the claims, not by the embodiments. Various modifications made within the scope of the claims and the equivalent significance of the disclosure are considered to be within the scope of the present invention.

[0030] The following effects are achieved by the power supply device 100 according to the embodiment described above. (1) The power supply device 100 comprises a box-shaped housing 1, a plate-shaped body 7 provided inside the housing 1 perpendicular to the ground 40, a breaker circuit 8 provided on the plate-shaped body 7, and a power supply terminal 3 provided inside the housing 1 that receives power from the breaker circuit 8 and supplies power to a power supply cable 30 provided below the breaker circuit 8. The power supply terminal 3 comprises an inclined portion 4 that slopes downward from the outside to the inside of the housing 1, and a pin plug connection portion 5 for connecting a power supply cable 30 having a pin plug 30a perpendicular to the inclined portion 4.

[0031] This provides a power supply device 100 that can be easily connected to and disconnected from the heavy and rigid CVT cable 30.

[0032] (2) The power supply device 100 of (1) has a rectangular opening 11 that opens on one side of the housing portion 1, and the upper end of the inclined portion 4 is provided based on the upper end of the opening 11.

[0033] As a result, by adjusting the position of the upper end of the inclined portion 4 and the upper end of the opening 11, the inclined portion 4 can be positioned so that it is observable from the opening 11, and the inclined portion 4 can be positioned further inside the housing portion 1 relative to the opening 11. This makes it easier to connect the tip of the power supply cable 30 to the pin plug connection portion 5 provided on the inclined portion 4, and also prevents rain from getting on the inclined portion 4.

[0034] (3) The power supply device 100 of (1) or (2) has a protruding portion 13 that protrudes diagonally downward from the housing portion 1, and the inclined portion 4 is formed on the tip side of the protruding portion 13.

[0035] This allows the housing 1 to be enclosed by the inclined portion 4 and the protruding portion 13. As a result, a housing 1 with excellent waterproof and dustproof properties is realized, and a power supply device 100 with excellent waterproof and dustproof properties is realized.

[0036] (4) In any one of the power supply devices 100 from (1) to (3), the housing portion 1 has a cover 2 that is openable and closable and covers the inclined portion 4.

[0037] This improves the waterproof and dustproof properties of the inclined section 4.

[0038] (5) In any one of the power supply devices 100 from (1) to (4), the diameter of the power supply cable 30 to be powered is greater than 3 cm, and the power supply device 100 has the capacity to supply a current of 500 A or more.

[0039] This provides a power supply device 100 with high reliability and high power supply capacity. [Explanation of symbols]

[0040] 1 cabinet 2 Covers 2a Circuit breaker cover 2b Pin plug connector cover 3. Power supply terminal section 4 Slope 4a One of the plate-like bodies 4b The other plate-like body 5-pin plug connector 5a Pin jack section 5b Bolt and nut section 6. Circuit breaker connection 7. Plate-shaped body for circuit breaker 8. Circuit breaker section 9. Circuit breaker terminals 10 Internal wiring 11 Opening 11a Circuit breaker access section 11b Pin plug connector opening 12. Ground wire 13 Protrusion 14. Rainproof sheet 20. Land-based power wiring 30 Power supply cable 30a pin plug 30b CVT cable 40 ground 100 Power supply device

Claims

1. A box-shaped casing, A plate-like body is provided inside the aforementioned housing portion, perpendicular to the ground, The breaker circuit section provided on the plate-shaped body, A power supply terminal is provided inside the housing and receives power from the breaker circuit, and is located below the breaker circuit to supply power to the power supply cable, It has, The aforementioned power supply terminal section is The aforementioned housing portion includes an inclined portion that slopes downward from the outside to the inside, The power supply cable having a pin plug is connected perpendicularly to the inclined portion, and the power supply cable having a pin plug is connected to a pin plug portion, The upper end of the inclined portion is provided based on the upper end of the pin plug connection opening formed on the side surface of the housing portion. The pin plug connector is positioned so that the tip of the power supply cable, which is introduced through the opening of the pin plug connector, is connected to the inside of the housing. Power supply device.

2. The housing portion has a rectangular opening that opens on one side, The upper end of the inclined portion is provided based on the upper end of the opening. The power supply device according to claim 1.

3. It has a protruding portion that extends diagonally downward from the housing portion, The inclined portion is formed on the tip side of the protruding portion. The power supply device according to claim 1 or claim 2.

4. The housing portion is openable and closable and has a cover that covers the inclined portion. The power supply device according to claim 1 or claim 2.

5. The power supply cable to be supplied has a diameter of more than 3 cm and has a power supply capacity to carry a current of 500 A or more. The power supply device according to claim 1 or claim 2.

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