CN213460483U - Inland river port and pier low-capacity low-voltage shore power connection box circuit - Google Patents

Abstract

The utility model discloses a small-capacity low-voltage shore power connection box circuit for inland river ports and wharfs, which comprises a circuit breaker Q, a transformer TC, a relay KA, a local stop button S, an emergency cut-off button SJ and a marine interlocking switch socket, the inlet end of the breaker Q is connected with a shore power feed switch, the outlet end and the grounding wire of the breaker Q are connected with the inlet end of a switch XK of the marine interlocking switch socket, the connector XP of the marine interlocking switch socket is connected with one end of a flexible cable, the other end of the flexible cable is connected to a ship side shore power box, the primary side of the transformer TC is connected with a wire outlet end of a last-stage shore power feed switch, the secondary side of the transformer TC outputs an alternating-current 24V control power supply, a coil of the relay KA, an undervoltage tripper coil YU of the circuit breaker Q, an emergency cut-off button SJ and a local stop button S are connected in series, and two ends of the series circuit are connected with two ends of the secondary side of the transformer TC. The utility model is used for shore power supply of electric wire netting gives the bank electronic box of ship side.

Description

Inland river port and pier low-capacity low-voltage shore power connection box circuit

Technical Field

The utility model relates to an inland river port and pier low capacity low pressure bank electricity connects electronic box circuit belongs to boats and ships electrical equipment technical field.

Background

Regulations for limiting exhaust emission of ships during port-entry in various countries around the world are becoming stricter, and documents are issued sequentially at home and abroad to stipulate that the operation of a generator on a ship needs to be stopped during port-entry of the ship, and shore power is used as a power supply of the ship. The harbour ships use shore power and have become a great development trend in the shipping industry.

In recent years, relevant departments in China release a series of specifications and standards for constructing port and wharf shore power supply facilities for using shore power during the process of advancing ships to berth.

The ' legal inspection rule for ships and offshore facilities-legal inspection technical rule for domestic sailing seacraft ' 2018 modification notice ' issued by the maritime administration of China is implemented from 2019, 1 month and 1 day, and the ' notice ' stipulates that: "ship electricity and shore electricity should be connected through a plug and a socket. The plug and receptacle are designed to ensure that no incorrect connection occurs and to ensure hot-plugging is not possible, and to comply with accepted standards (the accepted standard being "IEC 60309 or other equivalent standards"). The plug of the ship should be one of the following specifications according to the load supplied by shore power during the harboring period of the ship: (1)450V, 63A; (2)450V, 125A; (3)450V, 250A ". Q/GDW 11468.4-2016 Port Shore Power Equipment Specification, part 4, issued by national grid corporation: the requirements in ship shore connection and interface device "a: the connection of the shore power ship of the port is to adopt the connection of the whole flexible cable, and the connection devices at the two ends of the shore side and the ship side are to adopt the connection devices (generally called accessories) meeting the regulations, and the connection mode is shown in figure A.1. The figure A.1 refers to figure 1 in the attached drawings of the specification. The connection mode of the cable at both sides of the shore side and the ship side is consistent with that of the cable given by IEC standard in figure A.1 of the specification Q/GDW 11468.4-2016, see the attached figures 2 and 3 of the specification.

In fig. 1, 2, and 3, the cable is connected to shore power at the shore-side power supply point by using a "plug and socket-outlet", and connected to shore power at the ship-side power receiving point by using a "ship coupler", which is composed of a "ship connector" and a "ship entrance let" (ship input socket).

IEC 60309-5:2017 "PLUGS, SOCKET-OUTLETS AND COUPLERS FOR INDUSTRIAL PURPOSES Part5: Dimensional compatibility AND interchange requirements FOR PLUGS, SOCKET-output pads AND pads FOR low-voltage shore connection systems (LVSC) (Part 5 of plug, SOCKET AND coupler FOR INDUSTRIAL use: requirements FOR Dimensional compatibility AND interchangeability of SOCKETs, PLUGS FOR marine low-voltage shore electrical connection systems) AND IEC/IEEE 80005-3: 2016 "availability connections in port-Part 3: Low Voltage Shore Connection (LVSC) Systems-General requirements" specifies that the main electrodes of the plug receptacle and of the ship coupler should have 3 phase electrodes L1, L2, L3 plus 1 ground electrode E, while the auxiliary electrodes should have 4 control electrodes P1, P2, P3, P4, i.e. 3P + E + P1, P2, P3, P4, the contact arrangement being referred to in the description of figures 4 and 5.

The IEC standard requires plug sockets and marine coupler contacts in shore electrical systems, which are provided for international ports or international cruise ships in section 2 of the port shore power plant specification with Q/GDW 11468.2-2016: the low-voltage large-capacity power supply' compatible large-capacity ship-mounted shore power box is completely necessary. Otherwise, as in the IEC/ISO/IEEE 80005 standard: a ship that does not use the present standard may find it unable to connect to a satisfactory shore power supply. "

According to IEC 80005-3: 2016 standard requirements, shore power accessories should be hot pluggable proof, and the requirements should be met with control contacts in the plug and jack and ship power couplers and a dedicated cable with 4 control wires. The cost of a set of marine coupler meeting IEC 60309-5:2017 standard and a special connecting cable (also needing 3P + E + P1, P2, P3 and P4) is far higher than the price of a low-capacity low-voltage shore power connection box; the international standard shore power safety control loop technology is complex, and has difficulty in popularization in small ships in inland rivers.

The method has the advantages that the method is compatible, convenient to use and low in investment cost, and meets the requirement of standard standards, and the ship electricity and the shore electricity are connected through the plug and the socket. The design of the plug and the socket ensures that incorrect connection cannot occur, and ensures that safety regulations such as hot plugging cannot be carried out, so that the problems of inconsistent interface standards, poor safety and the like existing in the current shore power system can be effectively overcome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inland river harbour pier low capacity low pressure bank electricity connects electronic box circuit is applicable to the rated voltage value and is 400V and following, and the rated current value is 16A, 32A, 63A, 125A's harbour pier low capacity low pressure bank electricity connects electronic box. And the shore power box is used for supplying power to the ship side by an onshore power grid.

The purpose of the utility model is realized through the following technical scheme:

a small-capacity low-voltage shore power connection box circuit for a wharf at an inland river comprises a breaker Q, a transformer TC, a relay KA, a local stop button S, an emergency cut-off button SJ and a marine interlocking switch socket, wherein the marine interlocking switch socket comprises a switch XK, a socket XS and a connector XP, the wire inlet end of the breaker Q is connected with a shore power feed switch at the previous stage, the wire outlet end and the grounding wire of the breaker Q are connected with the wire inlet end of the switch XK of the marine interlocking switch socket, the connector XP of the marine interlocking switch socket is connected with one end of a flexible cable, the other end of the flexible cable is connected to a shore power box at the ship side, the primary side of the transformer TC is connected with the wire outlet end of the shore power feed switch at the previous stage, the secondary side of the transformer TC outputs an alternating-current 24V control power supply, and a coil of the relay KA, an undervoltage release coil YU of the breaker, two ends of the series circuit are connected with two ends of a secondary side of the transformer TC, a normally open contact KA1-2 of the relay KA is connected in series with a tripping and opening loop of the upper stage circuit breaker, and a normally closed contact KA3-4 of the relay KA is connected in series with an alarm loop.

The purpose of the utility model can be further realized through the following technical measures:

the small-capacity low-voltage shore power connection box circuit for the inland river port wharf has the advantage that the marine interlocking switch socket 1 is CLK-shaped.

The small-capacity low-voltage shore power connection box circuit for the inland river port wharf is characterized in that a single-phase connection box is a 3-contact marine interlocking switch socket in a 2-phase grounding mode, and a three-phase connection box is a 5-contact marine interlocking switch socket in a 3-phase neutral line grounding mode.

The inland river port wharf small-capacity low-voltage shore power connection box circuit is characterized in that a tripping signal contact Q5-6 of the circuit breaker Q provides a signal for a related circuit breaker to carry out linkage tripping; the auxiliary contacts Q1-2, Q3-4 of the circuit breaker Q are used to electrically interlock with the ship or provide an on/off position signal for the circuit breaker Q.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an inland river port and pier low capacity low pressure bank electricity connects electronic box circuit can be used to the new-made of port and pier low capacity low pressure bank electricity connects electronic box or reequip, low cost, and convenient to use, safe and reliable is convenient for realize the standardization, is the equipment guarantee that uses the bank electricity during the middle-size and small-size boats and ships in the promotion inland river are berthed. The power connection box is provided with the interlocking device of the socket and the connector plug and the retaining device of the socket and the connector plug, can prevent hot plugging and can ensure the safety of using shore power. The coil of the safety relay is connected with the coil of the undervoltage release of the main circuit breaker in series, and when the protection failure of the main circuit breaker occurs, the safety relay provides backup protection.

Drawings

FIG. 1 is a schematic view of the connection of a flexible cable on the shore side to the side of a ship;

FIG. 2 is a schematic view of a cable assembly in use;

FIG. 3 is a schematic view of the use of the cable accessory;

FIG. 4 is a view of a ship inlet contact arrangement;

FIG. 5 is an IEC standard power plug and receptacle contact assignment diagram;

figure 6 is a view of a low capacity shore power connector contact layout;

FIG. 7 is a schematic diagram of a GB-12321 standard electrical accessory contact arrangement;

FIG. 8 is a circuit diagram of the small-capacity single-phase low-voltage shore power connection box of the present invention;

FIG. 9 is a circuit diagram of the small-capacity three-phase low-voltage shore power connection box of the present invention;

fig. 10 is the external circuit schematic diagram of the small-capacity low-voltage shore power connection box of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

The utility model discloses with the principle that advance and practicality combined together, unity and flexibility combined together, reliability and economic nature combined together, designed a harbour pier low capacity low pressure bank electricity connection box's circuit, can be used to harbour pier low capacity low pressure bank electricity connection box's newly-built or reequip, low cost, convenient to use, safe and reliable is convenient for realize the standardization, is an effective measure who promotes middle-size and small-size boats and ships in inland river and use the bank electricity during the berthing.

The utility model has the following technical characteristics:

1. Q/GDW 11468.3-2016 Port Shore Power Equipment Specification part 3, issued by national grid corporation: low voltage low capacity power supply clause 5.2.1.2 regulation: the power supply mode of the small-capacity shore power supply is an alternating-current single phase or an alternating-current three phase, the rated voltage single phase is 220V, and the rated voltage three phase is 380V; Q/GDW 11468.4-2016, clause 6.4.2, specifies: the maximum current value of the small-capacity shore power connector is 125A; item 6.4.3 defines the electrical parameters and functions of a small-capacity shore power connector as: "L1-ac power core, L2-ac power core, L3-ac power core, E-ground (E), N-neutral"; clause 6.4.4 gives "low capacity shore power connector contact arrangement" and specifies that a three-phase "low capacity shore power connector should contain 5 pairs of contacts. The contact arrangement is shown in figure 1 "(note: figure 1 is the figure 6 in the specification); the Q/GDW 11468.4-2016 Specification annex A specifies in "Shore Power supply mode": the power supply mode of the low-voltage small-capacity shore power system means that the output voltage of the port shore-based power supply system is 220V or 380V and is used by power-receiving ships.

2. The utility model discloses a with Q/GDW 11468.3-2016, Q/GDW 11468.4-2016 standard and JTS155-2019 the supporting technology of wharf shore power facility construction technical specification, the utility model divides the small capacity low pressure shore power connection box of the port and wharf into an alternating current single-phase rated voltage of 220V, and the rated current value is 63A and below; the rated voltage of the AC three-phase is 440V or below, the rated current value is 125A or below, and the rated voltage is consistent with the electrical parameters of the low-voltage small-capacity power supply of the port specified by Q/GDW 11468.3-2016 and Q/GDW 11468.4-2016; in the low-voltage connection box, the specification of No. 4.2.7.2 of JTS155-2019 is as follows: "reserve cable inlet wire binding post for when not having the use connector, can adopt M10 terminal connection. "

3. The utility model discloses specifically adopt proper socket and connector to replace IEC80005-3 in GB-12321 "marine 16A ~ 125A plug and socket and connector" or other equivalent standards: 2016 and IEC 60309-5:2017 standard. The 16A-125A plug socket and the connector for the ship of the GB-12321 standard are ship electric products independently developed in China, and the rated current of the ship electric products has four specifications: 16A, 32, 63A, 125A, protection class IP56, rated voltage: 220V single phase, 440V three phase and below. The single-phase contacts are selected from the 2P + ground form in FIG. 7 (such as the CLK-type 2P + ground with switch socket connector, and the connector XP is provided in a matching way), the three-phase contacts are selected from the 3P + N + ground form in FIG. 7 (such as the CLK-type 3P + N + ground with switch socket connector, and the connector XP is provided in a matching way), and the relevant regulations of Q/GDW 11468.3-2016 and Q/GDW 11468.4-20164 are consistent; the CLK type socket connector with the switch is provided with an interlocking device of a plug socket and a holding device of a plug and a connector plug, can prevent the plug from being electrified before the plug is normally plugged with the socket or the connector, can prevent the plug from being pulled out when the plug is electrified, and can have the functions of keeping the plug or the connector at a normal position and preventing the plug from being pulled out accidentally when the plug or the connector is normally plugged, and the CLK type socket connector with the switch is low in price and convenient to use, and is beneficial to realizing standardization of a small-capacity low-voltage shore power connection box of a wharf of a inland river port.

As shown in fig. 7, 2P + ground in the schematic diagram of the contact arrangement, the plug and socket of the small-capacity single-phase low-voltage shore power connection box for the port and pier selects the plug and socket (rated voltage 220V, frequency 50 or 60Hz, rated current 63A and below) with 3 contacts (2P + ground) in the GB-12321 standard. The utility model discloses port and pier low capacity three-phase low pressure bank electricity connects socket and socket of electric box adopts socket and connector (rated voltage 440V and below, frequency 50 or 60Hz, rated current 125A and below) of 5 contacts (3P + N + ground) in the GB-12321 standard. Such as 3P + N + ground in the contact arrangement schematic of fig. 7.

The utility model discloses inland river harbour pier single-phase low pressure bank electricity connection box's of small capacity basic circuit diagram, as shown in figure 8. The utility model discloses inland river port and pier low capacity three-phase low pressure bank electricity connects basic circuit diagram of power box, as shown in figure 9. In the figure, the XS and the XP are the 16A-125A sockets XS and the connectors XP for the ship which conform to GB-12321 or other equivalent standards, have the function of preventing hot plugging, and other electrical properties conform to the requirements of relevant standards. The utility model discloses be used for its plug and socket who replaces international standard to reduce cost and simplify control scheme. The small-capacity single-phase low-voltage shore power connection box of the inland river port wharf selects a socket and a connector (namely a plug) with 3 contacts (2P + ground), the small-capacity three-phase low-voltage shore power connection box selects a socket and a connector with 5 contacts (3P + N + ground), and rated voltage and current are selected and matched according to the specification of the connection box; the socket XS is arranged on an electric connection box of a port wharf, and the connector XP is arranged at one end of a flexible cable connected with shore power. The external wiring of the small-capacity low-voltage shore power connection box of the inland river port wharf is shown in figure 10.

A copper wiring stud is arranged on the inner outlet side of the power connection box, the outlet terminal of the small-capacity single-phase low-voltage shore power connection box is L, N, PE in terms of configuration of the wiring stud, the outlet terminal of the small-capacity three-phase low-voltage shore power connection box is L1, L2, L3 and N, PE in terms of configuration of the wiring stud, the diameters of the studs are 16A, M6, 32A, 63A, M8 and 125A, M10; if the space in the box is convenient for the connection of the incoming flexible cable, the phase line and the N line can utilize the wiring terminal at the outgoing side of the main breaker in the electric connection box.

Q is a main circuit breaker, a small-capacity single-phase low-voltage shore power connection box adopts a 2-pole circuit breaker, a small-capacity three-phase low-voltage shore power connection box adopts a 4-pole circuit breaker, current is selected and matched according to the specification of the shore power connection box, and the circuit breakers Q are provided with a short circuit and overcurrent release, an undervoltage release YU, a tripping signal contact and an auxiliary contact, and can also adopt a circuit breaker which is electrically operated and has more functions;

1F, 2F, 3F, 4F and 5F are fuses which are used for short-circuit protection of a protection and measurement voltage loop, rated current 10A and fusible core current 6A.

The AC24V controls the power supply, and the power supply is controlled according to IEC 80005-3: the 2016 standard specifies a voltage level less than 60V dc or 25V ac. The utility model discloses the safety control return circuit chooses for use AC24V power, is supplied power by control transformer TC.

The AC220V working power supply, the three-phase connection box is provided by the secondary 220V of the transformer TC, the single-box connection box is directly provided by the single-phase 220V power supply, and the working power supply is provided for the instrument and the relay protection device.

The current transformers 1TA, 2TA and 3TA are current transformers and are configured when meters and relay protection devices need to be installed, primary side currents are selected and matched according to rated currents of the shore power box, and secondary side currents are selected and matched according to currents of the meters.

And 1X is a protection and measurement signal loop interface. Voltage signals required by a metering instrument and a relay protection device (for example, reverse power protection, positive phase sequence protection, open phase protection, overvoltage/undervoltage protection, surge protection, ground fault protection and the like can be selected and matched as required) can be accessed from a 1X protection and measurement voltage loop, and current signals can be accessed from a 1X protection and measurement current loop; if not, the protection and measurement voltage loop should be open-circuited, and the protection and measurement current loop should be short-circuited.

And 2X is an interface of an emergency cut-off and protection trip safety loop. The emergency cut-off button SJ is connected between the 2X terminals 1 and 2 in series, the dynamic break contacts of other relay protection devices can be connected between the 2X terminals 1 and 2 in series, and the circuit breaker Q is tripped by any protection action; if not, the 2X terminals 1 and 2 should be shorted. When shore power is not used, a button S with a self-locking function is pressed down, and the AC24V is cut off to control the power supply; when shore power is ready to be connected, the button S with the self-locking function is reset, the control power supply AC24V is switched on, and the undervoltage tripping coil YU of the circuit breaker Q is electrified.

After a switch at the upper stage of the power connection box is switched on, a power indicator lamp 1H is turned on (a small-capacity single-phase low-voltage shore power box selects 220V, and a small-capacity three-phase low-voltage shore power box selects 380V); and (3) switching on the circuit breaker Q, and lighting a switching-on indicator lamp 2H (220V is selected for the small-capacity single-phase low-voltage shore power box, and 380V is selected for the small-capacity three-phase low-voltage shore power box).

The marine interlocking switch socket 1 can be a CLK type marine interlocking switch socket, and comprises a switch XK, a socket XS and a connector XP, wherein each phase of the switch XK is respectively communicated with each phase of the socket XS. If the switch XK on the socket XS of the power connection box is in the connection position, the connector XP at the end part of the flexible cable connected with shore power is interlocked and can not be inserted, only the switch XK on the socket is disconnected, the connector XP can be inserted, and the switch XK on the socket is connected after the connector XP is inserted; at the moment, the connector XP inserted into the socket XS on the electric connection box cannot be pulled out, and the connector XP can be pulled out only after the switch XK on the socket is disconnected.

Pressing a local stop button S or pressing an emergency stop self-locking button SJ located at other places, or pressing any one protection action in a 2X emergency cut-off and protection trip safety loop interface, and tripping a breaker Q under-voltage; the trip signal contact Q5-6 of Q may be used to trip an associated circuit breaker; the auxiliary contacts Q1-2, Q3-4 of Q may be used to electrically interlock with the ship or provide an on/off position signal for the main breaker Q for related control, protection or signal loops.

The relay KA is a safety relay, KA is a current type intermediate relay (the current is less than or equal to the current of an undervoltage release coil YU), a coil of the KA is connected with the undervoltage release coil YU in series, the KA is simultaneously released in an undercurrent mode when the YU is released in an undervoltage mode, and a normally open contact 1 and a normally closed contact 1 are reset; when the main breaker Q is in emergency cut-off or fault protection action, if the main breaker Q is in failure protection, the KA provides backup protection, and the normally open contact KA1-2 and the normally closed contact KA3-4 are respectively used for jumping the previous-stage breaker and connecting an alarm loop.

In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (4)

1. A small-capacity low-voltage shore power connection box circuit for a wharf at an inland river is characterized by comprising a breaker Q, a transformer TC, a relay KA, a local stop button S, an emergency cut-off button SJ and a marine interlocking switch socket, wherein the marine interlocking switch socket comprises a switch XK, a socket XS and a connector XP, the wire inlet end of the breaker Q is connected with a shore power feed switch at the previous stage, the wire outlet end and the grounding wire of the breaker Q are connected with the wire inlet end of the switch XK of the marine interlocking switch socket, the connector XP of the marine interlocking switch socket is connected with one end of a flexible cable, the other end of the flexible cable is connected to a shore power box at the ship side, the primary side of the transformer TC is connected with the wire outlet end of the shore power feed switch at the previous stage, the secondary side of the transformer TC outputs an alternating current 24V control power supply, and the coil of the relay KA, the under-voltage tripper coil YU of the breaker Q, two ends of the series circuit are connected with two ends of a secondary side of the transformer TC, a normally open contact KA1-2 of the relay KA is connected in series with a tripping and opening loop of the upper stage circuit breaker, and a normally closed contact KA3-4 of the relay KA is connected in series with an alarm loop.

2. The inland river port pier low-capacity low-voltage shore power connection box circuit of claim 1, wherein the model of the marine interlocking switch socket is CLK type.

3. The small-capacity low-voltage shore power connection box circuit for the inland river port wharf as claimed in claim 1, wherein a single-phase connection box is a 3-contact marine interlocking switch socket in a 2-phase grounding mode, and a three-phase connection box is a 5-contact marine interlocking switch socket in a 3-phase neutral grounding mode.

4. The inland river port wharf small-capacity low-voltage shore power connection box circuit of claim 1, wherein a trip signal contact Q5-6 of a circuit breaker Q provides a signal to an associated circuit breaker for gang tripping; the auxiliary contacts Q1-2, Q3-4 of the circuit breaker Q are used to electrically interlock with the ship or provide an on/off position signal for the circuit breaker Q.

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