Submarine cable laying ditcher box-type substation

Abstract

The utility model discloses a submarine cable laying ditcher box-type substation, which comprises a box body, a wire inlet cabinet, a soft start cabinet, a transformer, an instrument cabinet and a wire outlet cabinet, the interior of the box body is divided into a low-voltage chamber and a high-voltage chamber, the wire inlet cabinet and the soft start cabinet are located in the low-voltage chamber, the transformer, the instrument cabinet and the wire outlet cabinet are located in the high-voltage chamber, and the soft start cabinet is located in the high-voltage chamber. A generator cable is connected into the wire inlet cabinet, the wire inlet cabinet is connected into the soft start cabinet through a circuit breaker and a contactor, the soft start cabinet is connected into the input end of the transformer, the output end of the transformer is connected into the instrument cabinet, and the instrument cabinet is connected into the wire outlet cabinet. According to the utility model, the cost can be reduced, the overall volume is reduced, the integration level is high, and wiring and movement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment for cable laying and trenching machines, in particular to a chassis-type substation for submarine cable laying and trenching machines. Background Art

[0002] When the submarine trencher is working underwater, it mainly relies on the power provided by the ship. The power of the submarine trencher requires different voltage levels, and due to the limitations of underwater conditions, motor protection and other measures also need to be completed on the power supply side. The submarine trencher is not fixed on a certain ship. It will operate on different ships and different sea areas according to different business needs. Therefore, its power supply and distribution system needs to be designed to be mobile. In order to facilitate mobility, the power supply and distribution system is required to be small in size and highly integrated, because different ships can only provide different deck spaces. If the volume is too large, it may not be able to fit, and it is also inconvenient to hoist. The power supply and distribution system is required to be convenient and quick to wire, and it cannot have many wiring and routing procedures like the onshore distribution room. In addition, it is also required to be highly safe and can meet the weather on the sea surface, hull shaking and other conditions. The existing power supply and distribution system has low integration, large volume, large wiring engineering, and the entire power supply and distribution system cannot be moved as a whole, resulting in a large amount of mobile engineering, and low power. Sometimes there will be a situation of "digging cannot be done". In addition, the underwater power unit cannot be controlled separately. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a submarine cable-laying trenching chassis-type substation which can reduce costs, reduce overall volume, have high integration, facilitate wiring and be easy to move.

[0004] The utility model is realized through the following technical scheme: a submarine cable laying trenching box-type substation, comprising a box body, an incoming line cabinet, a soft start cabinet, a transformer, an instrument cabinet, and an outgoing line cabinet, wherein the box body is divided into a low-voltage chamber and a high-voltage chamber, the incoming line cabinet and the soft start cabinet are located in the low-voltage chamber, the transformer, the instrument cabinet, and the outgoing line cabinet are located in the high-voltage chamber, the generator cable is connected to the incoming line cabinet, the incoming line cabinet is connected to the soft start cabinet through a circuit breaker and a contactor, the soft start cabinet is connected to the input end of the transformer, the output end of the transformer is connected to the instrument cabinet, and the instrument cabinet is connected to the outgoing line cabinet.

[0005] Furthermore: a passage opening is provided between the low-pressure chamber and the high-pressure chamber, and the passage opening is provided with an isolation door.

[0006] Furthermore: the low-pressure chamber is provided with an entrance, and the entrance is provided with a safety door.

[0007] Furthermore: the passage opening is arranged adjacent to the entrance.

[0008] Furthermore: a PLC cabinet and an electric tool cabinet are also provided in the low-voltage room.

[0009] Furthermore: the incoming line cabinet and the soft start cabinet are located on the same side of the low-voltage room, and the PLC cabinet and the power tool cabinet are located on the other side of the low-voltage room.

[0010] Furthermore: the transformer is located in the middle of the high-voltage chamber, and the transformer is not directly opposite the passage opening, the instrument cabinet and the outlet cabinet are located at an end away from the passage opening, and there is an aisle between the instrument cabinet and the transformer.

[0011] Furthermore: the outer wall of the box body is provided with a lifting lug.

[0012] Furthermore: a microcomputer integrated protection instrument, a current transformer, and a voltage transformer are arranged in the instrument cabinet; the input end of the microcomputer integrated protection instrument is respectively connected to the output end of the current transformer and the output end of the voltage transformer; the output end of the microcomputer integrated protection instrument is connected to the controlled end of the circuit breaker.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By dividing the box into a low-voltage room and a high-voltage room, the incoming cabinet and the soft-start cabinet are set in the low-voltage room, and the transformer, instrument cabinet, and outgoing cabinet are set in the high-voltage room. The cable of the generator on board enters the incoming cabinet and is connected to the soft-start cabinet through the circuit breaker and contactor. The output end of the soft-start cabinet is connected to the transformer, the transformer is stepped up, and connected to the instrument cabinet. The instrument cabinet is connected to the outgoing cabinet. All the wires of the submarine trencher that need to be connected are integrated into the outgoing cabinet. The wiring is very convenient, and the soft starter is connected in front of the transformer. Only low-voltage components can be used to control the high voltage. There is no need for high-voltage soft starters, high-voltage vacuum circuit breakers, and high-voltage vacuum contactors. This greatly reduces the cost and installation space, reduces the overall volume, and facilitates the movement of the entire box.

[0015] 2. An isolation door is set at the passage between the low-pressure chamber and the high-pressure chamber to achieve safe isolation.

[0016] 3. Set the incoming line cabinet and soft start cabinet on the same side of the low-voltage room, set the PLC cabinet and power tools on the other side of the low-voltage room, set the transformer in the middle of the high-voltage room, and the transformer is not directly opposite the passage opening. Set the instrument cabinet and the outgoing line cabinet at one end of the principle passage opening, and there is an aisle between the instrument cabinet and the transformer, leaving enough passage for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the utility model;

[0018] Figure 2It is a side view of the utility model;

[0019] Figure 3 The circuit diagram of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 4 The circuit diagram of the utility model is shown in FIG. Figure 2 .

[0021] Explanation of the reference numerals: 1-box, 2-incoming cabinet, 3-soft start cabinet, 4-transformer, 5-instrument cabinet, 6-outgoing cabinet, 7-low-voltage room, 8-high-voltage room, Q1-circuit breaker, KM1-contactor, 9-channel opening, 10-isolation door, 11-entrance, 12-safety door, 13-PLC cabinet, 14-power tool cabinet, 15-aisle, 16-lifting ear. DETAILED DESCRIPTION

[0022] Figures 1 to 4 A schematic structural diagram of an embodiment of a submarine cable-laying trenching box-type substation provided by the utility model comprises a box body 1, an incoming line cabinet 2, a soft start cabinet 3, a transformer 4, an instrument cabinet 5, and an outgoing line cabinet 6. The interior of the box body 1 is divided into a low-voltage chamber 7 and a high-voltage chamber 8. The incoming line cabinet 2 and the soft start cabinet 3 are located in the low-voltage chamber 7, the transformer 4, the instrument cabinet 5, and the outgoing line cabinet 6 are located in the high-voltage chamber 8, the generator cable is connected to the incoming line cabinet 2, the incoming line cabinet 2 is connected to the soft start cabinet 3 through the circuit breaker Q1 and the contactor KM1, the soft start cabinet 3 is connected to the input end of the transformer 4, the output end of the transformer 4 is connected to the instrument cabinet 5, and the instrument cabinet 5 is connected to the outgoing line cabinet 6.

[0023] During wiring, the generator cable on board enters from the incoming line cabinet 2, and is connected to the soft start cabinet 3 through the circuit breaker Q1 and the contactor KM1. The output end of the soft start cabinet 3 is connected to the transformer 4, the transformer 4 is stepped up, and is connected to the instrument cabinet 5. The instrument cabinet 5 is connected to the outgoing line cabinet 6. All the wires of the submarine trenching machine that need to be connected are integrated into the outgoing line cabinet 6, which is very convenient for wiring. In addition, compared with the traditional motor power distribution that uses low voltage to control high voltage, this embodiment connects the soft starter in front of the transformer 4 (such as Figure 3 As shown), high voltage can be controlled by using only low-voltage components, and high-voltage soft starter, high-voltage vacuum circuit breaker Q1, and high-voltage vacuum contactor KM1 are not required. This embodiment greatly reduces the cost and installation space, reduces the overall volume, and facilitates the movement of the entire box 1.

[0024] A passage opening 9 is provided between the low-pressure chamber 7 and the high-pressure chamber 8 , and an isolation door 10 is provided at the passage opening 9 .

[0025] Safety isolation is achieved through the isolation door 10, thereby improving safety.

[0026] The low-pressure chamber 7 is provided with an entrance 11 , and the entrance 11 is provided with a safety door 12 .

[0027] The passage opening 9 is arranged adjacent to the inlet 11 .

[0028] A PLC cabinet 13 and an electric tool cabinet 14 are also provided in the low-voltage room 7 .

[0029] The incoming line cabinet 2 and the soft start cabinet 3 are located on the same side of the low voltage chamber 7 , and the PLC cabinet 13 and the power tool cabinet 14 are located on the other side of the low voltage chamber 7 .

[0030] The transformer 4 is located in the middle of the high voltage chamber 8 and is not directly opposite to the passage opening 9 . The instrument cabinet 5 and the outlet cabinet 6 are located at an end away from the passage opening 9 , and there is an aisle 15 between the instrument cabinet 5 and the transformer 4 .

[0031] The outer wall of the box body 1 is provided with a lifting lug 16 .

[0032] The lifting lug 16 facilitates lifting of the box body 1 .

[0033] A microcomputer integrated protection instrument, a current transformer and a voltage transformer are arranged in the instrument cabinet 5. The input end of the microcomputer integrated protection instrument is respectively connected to the output end of the current transformer and the output end of the voltage transformer, and the output end of the microcomputer integrated protection instrument is connected to the controlled end of the circuit breaker Q1.

[0034] When working, the current transformer changes the bus current into a 0-5A signal, and the voltage transformer changes the bus voltage into a 0-100V signal. The current and voltage signals are connected to the microcomputer integrated protection instrument. The microcomputer integrated protection instrument determines whether there are circuit break, overload, phase loss, voltage and current imbalance and other problems based on the collected current and voltage signals. If the above problems exist, the microcomputer integrated protection instrument sends a protection signal to trip the circuit breaker Q1. The circuit schematic diagram is as follows: Figure 4 shown.

[0035] The above detailed description is a specific description of a feasible embodiment of the utility model. The embodiment is not intended to limit the patent scope of the utility model. Any equivalent implementation or modification that does not deviate from the utility model should be included in the patent scope of this case.

Claims

1. A submarine cable laying trenching chassis substation, characterized by: It includes a box body, an incoming line cabinet, a soft start cabinet, a transformer, an instrument cabinet, and an outgoing line cabinet. The box body is divided into a low-voltage chamber and a high-voltage chamber. The incoming line cabinet and the soft start cabinet are located in the low-voltage chamber, and the transformer, the instrument cabinet, and the outgoing line cabinet are located in the high-voltage chamber. The generator cable is connected to the incoming line cabinet, and the incoming line cabinet is connected to the soft start cabinet through a circuit breaker and a contactor. The soft start cabinet is connected to the input end of the transformer, and the output end of the transformer is connected to the instrument cabinet, and the instrument cabinet is connected to the outgoing line cabinet.

2. According to claim 1, a submarine cable laying trenching chassis substation is characterized by: A passage opening is arranged between the low-pressure chamber and the high-pressure chamber, and an isolation door is arranged at the passage opening.

3. According to claim 2, a submarine cable laying trenching chassis type substation is characterized by: The low-pressure chamber is provided with an entrance, and the entrance is provided with a safety door.

4. According to claim 3, a submarine cable laying trenching chassis substation is characterized by: The passage opening is arranged adjacent to the entrance.

5. According to claim 3, a submarine cable laying trenching chassis type substation is characterized by: The low-voltage room is also provided with a PLC cabinet and an electric tool cabinet.

6. A submarine cable laying trenching chassis type substation according to claim 5, characterized in that: The incoming line cabinet and the soft start cabinet are located on the same side of the low-voltage room, and the PLC cabinet and the power tool cabinet are located on the other side of the low-voltage room.

7. A submarine cable laying trenching chassis type substation according to claim 6, characterized in that: The transformer is located in the middle of the high-voltage chamber and is not directly opposite to the passage opening. The instrument cabinet and the outlet cabinet are located at an end away from the passage opening, and an aisle is provided between the instrument cabinet and the transformer.

8. The submarine cable laying trenching chassis type substation according to claim 7, characterized in that: The outer wall of the box body is provided with lifting ears.

9. A submarine cable-laying trenching chassis-type substation according to claim 8, characterized in that: The instrument cabinet is provided with a microcomputer integrated protection instrument, a current transformer, and a voltage transformer. The input end of the microcomputer integrated protection instrument is respectively connected to the output end of the current transformer and the output end of the voltage transformer, and the output end of the microcomputer integrated protection instrument is connected to the controlled end of the circuit breaker.

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