CN210577931U - Intra-enterprise local area network power supply interconnection power supply system - Google Patents

Intra-enterprise local area network power supply interconnection power supply system Download PDF

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Publication number
CN210577931U
CN210577931U CN201921470738.9U CN201921470738U CN210577931U CN 210577931 U CN210577931 U CN 210577931U CN 201921470738 U CN201921470738 U CN 201921470738U CN 210577931 U CN210577931 U CN 210577931U
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CN
China
Prior art keywords
power supply
alternating current
main
current contactor
coil
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Expired - Fee Related
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CN201921470738.9U
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Chinese (zh)
Inventor
张子明
刘臣宇
刘洪刚
刘岩
孙帅
吴长久
尚士伟
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Tiefa Coal Group Machinery Manufacturing Co ltd
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Tiefa Coal Group Machinery Manufacturing Co ltd
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Priority to CN201921470738.9U priority Critical patent/CN210577931U/en
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Abstract

The utility model discloses an enterprise internal LAN power supply interconnection power supply system, two air circuit breakers are respectively arranged in the main loop of a main power supply and a standby power supply, the power end of a first alternating current contactor coil is connected with the main power supply, the inlet wire end of the main contact of the first alternating current contactor is connected with the first air circuit breaker in series, and the outlet wire end is used as a load power supply; a coil power supply end of the second alternating current contactor is connected with a standby power supply, a wire inlet end of a main contact of the second alternating current contactor is connected with the second air circuit breaker in series, and a wire outlet end is used as a load power supply; the coil power supply end of the intermediate relay is connected with a main power supply, the auxiliary normally-open contact of the intermediate relay is connected in series to a coil power supply loop of the first alternating current contactor, and the auxiliary normally-closed contact is connected in series to a coil power supply loop of the second alternating current contactor. The utility model is suitable for a various network equipment in factory and mine, office equipment and vital part video monitor system's power supply guarantees that network data and video monitoring signal normally transmit.

Description

Intra-enterprise local area network power supply interconnection power supply system
Technical Field
The utility model relates to an electric technical field's LAN power supply interconnection power supply technique specifically is an inside LAN power supply interconnection power supply system of enterprise.
Background
The power supply used in the internal office of an enterprise is generally taken from production power, the phenomenon of power supply interruption caused by line faults, equipment maintenance, manual misoperation and the like occurs occasionally, the influence on the production is caused in different degrees, the influence on the network and office equipment is very serious, the data is lost by a light person, and the irretrievable loss is caused by a heavy person.
The data signal of the local area network is relayed by the optical terminal case to be transmitted to the optical terminal case of the next stage office location step by step, the normal work of the local optical terminal case is directly influenced by the power interruption, and meanwhile, the data signal is interrupted to be transmitted to the next stage, so that the data signal is interrupted.
The ordinary UPS power supply equipment is only suitable for temporary power supply with small capacity when the power supply is interrupted, can ensure the necessary operation time for saving files in a computer storage disk, but is not suitable for large-capacity and long-time power supply because the power supply capacity and the power supply time of the ordinary UPS power supply are severely limited, and the application range is limited. The capacity of the UPS reaches 1KVA (600W), an external storage battery is required to be arranged when the power supply time exceeds 10 minutes, the price is high, and a large space is also occupied. The scheme that the local area network power supply system uses large-capacity UPS power supply equipment has very large investment and extremely low cost performance, and is not suitable for enterprise application.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a large capacity UPS power supply is not suitable for deficiencies such as enterprise application among the prior art, the utility model provides an inside LAN power supply interconnection power supply system of enterprise that adapts to factory and mine internal network and use on a large scale.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model relates to an intranet power supply interconnection power supply system in enterprise, including at least two sets of mutual reserve power supply, every set of power supply includes main power supply, stand-by power supply, air circuit breaker, auxiliary relay and ac contactor, wherein, air circuit breaker is two, locate respectively in the main loop of main power supply and stand-by power supply, ac contactor is also two, the coil power end and the main power supply of first ac contactor are connected, the inlet wire end and the first air circuit breaker series connection of the main contact of first ac contactor, the outlet wire end is as load power supply; a coil power supply end of the second alternating current contactor is connected with a standby power supply, a wire inlet end of a main contact of the second alternating current contactor is connected with the second air circuit breaker in series, and a wire outlet end is used as a load power supply; the coil power supply end of the intermediate relay is connected with a main power supply, the auxiliary normally-open contact of the intermediate relay is connected in series to the coil power supply loop of the first alternating current contactor, and the auxiliary normally-closed contact is connected in series to the coil power supply loop of the second alternating current contactor.
The main power supply and the backup power supply are electrically interlocked through auxiliary normally closed contacts of the first ac contactor KM1 and the second ac contactor KM 2.
When the power supplies are three or more, the first power supply unit and the second power supply unit are standby power supplies, the third first power supply unit takes the second power supply unit as the standby power supply, and other power supply units take the previous power supply as the standby power supply.
The utility model has the following beneficial effects and advantages:
1. the utility model is suitable for a factory and mine inside server, network optical transmitter and receiver, network switch, office computer, fax machine, use CAD design software department's printer, plotter and vital part video monitor system's power supply.
2. Use the utility model discloses, the instantaneous automatic operation that drops into of stand-by power supply when local power supply interruption can enough guarantee equipment normal operating such as network optical transmitter and receiver and video monitoring also can guarantee this unit consumer and normally work, guarantees network data and video monitoring signal normal transmission.
3. Use the utility model discloses LAN power interconnection power supply system's contact power cable moves towards along with the LAN optical cable and lays, and power supply unit's power supply box sets up near optical transmitter and receiver case, for equipment power supplies such as optical transmitter and receiver and network switch, furthest ensures the effective transmission of network data, and the power supply box is the power supply of this unit office equipment simultaneously, avoids the influence of power interruption to office equipment.
4. The utility model provides a main power supply and stand-by power supply electric interlocking avoid influencing mutually between the power and form the short-circuit accident even, ensure power supply system safe operation. The switching time of the main power supply and the standby power supply is determined by the action time of the alternating current contactor, automatic switching can be completed instantly, power failure accidents cannot be caused, and the power supply reliability is improved.
5. The utility model discloses the acquiescence main power source of power supply system is local mains operated, stand-by power supply is capacious, theoretically there is not time limitation, can be for the load power supply for a long time before the main power source resumes the power supply, this is that UPS electrical power generating system can't accomplish, and the system is whole to choose for use ordinary domestic electric part, circuit structure is simple, response speed is fast, work safe and reliable and with low costs, advantages such as overload capacity is strong and long service life, the power supply unit load is through careful accounting, load current is less than power supply unit current capacity, it arouses unexpected interrupt to take place the overload accident when avoiding the power switching, thereby avoid the emergence of network data interruption accident.
Drawings
FIG. 1 is a block diagram of the electrical structure of the present invention;
fig. 2 is an electrical schematic diagram of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification.
As shown in fig. 1-2, the utility model relates to an inside LAN power supply interconnected power supply system of enterprise, including at least two sets of mutual reserve power supply, every set of power supply includes the main power supply, stand-by power supply, air circuit breaker, auxiliary relay KA1 and ac contactor, wherein, air circuit breaker is two, locate respectively in the main circuit of main power supply and stand-by power supply, ac contactor is also two, first ac contactor KM 1's coil power end is connected with the main power supply, the inlet wire end of first ac contactor KM 1's main contact is connected with first air circuit breaker QF1 series connection, the outlet wire end is as load power; the coil power supply end of the second alternating current contactor KM2 is connected with a standby power supply, the wire inlet end of the main contact of the second alternating current contactor KM2 is connected with the second air circuit breaker QF2 in series, and the wire outlet end is used as a load power supply; a coil power supply end of the intermediate relay KA1 is connected with a main power supply, an auxiliary normally open contact KA1-1 of the intermediate relay KA1 is connected in series with a coil power supply loop of the first alternating current contactor KM1, and an auxiliary normally closed contact KA1-2 is connected in series with a coil power supply loop of the second alternating current contactor KM 2.
The main power supply and the standby power supply are electrically interlocked through auxiliary normally closed contacts of the first alternating current contactor KM1 and the second alternating current contactor KM2, so that mutual influence between the power supplies and even short-circuit accidents are avoided, and the safe operation of a power supply system is ensured.
When the power supplies are three or more, the first power supply unit and the second power supply unit are standby power supplies, the third first power supply unit takes the second power supply unit as the standby power supply, and other power supply units take the previous power supply as the standby power supply.
As shown in fig. 1, the 1# power supply unit supplies power to the server, the 2# to 4# power supply units supply power to the optical chassis, the 1# power supply unit and the 2# power supply unit are mutually standby power supplies, and the 3# and 4# power supply units both use the previous power supply as the standby power supply, so that each power supply unit in the system is guaranteed to have a standby power supply, and the reliability of power supply is guaranteed.
When the main power supply of any power supply unit in the circuit is interrupted, the standby power supply is automatically put into operation, so that adverse consequences and economic loss caused by power supply interruption can be effectively avoided. In the actual operation process, the large-range power failure can be generally notified in advance, and the situation that two power supply units are powered off accidentally at the same time rarely occurs, so that the reliability of the power supply interconnection system of the local area network is effectively guaranteed.
As shown in fig. 2, L1 and N1 are main power supplies, L2 and N2 are standby power supplies, and L, N is a load power supply.
When the main power supply and the standby power supply are both normal, the first air circuit breaker QF1 and the second air circuit breaker QF2 are in a closing state, the intermediate relay KA1 is closed, the normally open contact KA1-1 is closed, the normally closed contact KA1-2 is opened, the second alternating current contactor KM2 is powered off, the main contact is released, the auxiliary normally closed contact KM2-1 is closed, the first alternating current contactor KM1 is closed, the main contact is closed, and the main power supply supplies power to a load through the first air circuit breaker QF1 and the first alternating current contactor KM 1. When the main power supply is interrupted, the intermediate relay KA1 is powered off and released, the first alternating current contactor KM1 is powered off and released, and the main contacts are opened. Meanwhile, a normally closed contact of the intermediate relay KA1 is closed, an auxiliary normally closed contact KM1-1 of the first alternating current contactor KM1 is closed, the second alternating current contactor KM2 is attracted, a main contact is closed, and a standby power supply supplies power to a load through the second air circuit breaker QF2 and the second alternating current contactor KM 2. When the main power supply is recovered, the intermediate relay KA1 is closed, the normally closed contact KA1-2 is opened, and the alternating current contactor KM2 is disconnected and released. Meanwhile, an auxiliary normally-open contact KA1-1 of the intermediate relay is closed, an auxiliary normally-closed contact KM2-1 of the alternating current contactor KM2 is closed, the first alternating current contactor KM1 is attracted, a main contact is closed, and a main power supply supplies power to a load. The three power indicator lamps indicate the power supply state and the output state of the power supply.
The switching time of the main power supply and the standby power supply is determined by the action time of the alternating current contactor, automatic switching can be completed instantly, and power failure accidents cannot be caused.
The power supply capacity of the standby power supply is determined by the current capacity of a power switch, the specification of a cable and the current capacity of an alternating current contactor of a switching circuit, and a user can reasonably select the power switch, the power cable and the alternating current contactor through calculation according to actual needs. When the main power supply is interrupted, the standby power supply can work for a long time, and theoretically, no time limit exists, which cannot be realized by a UPS power supply system.
The local power supply and the standby power supply are both AC220V, YC-2X 4 rubber sleeve cables are adopted for power supply communication among the power supply units, the specification of the power supply communication cables is properly increased when the power supply line is long, and the specification and the model of the power supply communication cables can be determined through calculation according to the length of the power supply line and the allowable voltage loss so as to reduce the voltage loss and the line loss and improve the power supply quality.
Safety warning: the power control box of each power supply unit must be marked with the location information of the power source at the previous stage! When the power control box is overhauled, the local power supply and the standby power supply in the control box must be cut off simultaneously! The upper power supply of the local power supply and the standby power supply must be cut off when the power switch in the control box is replaced! The metal housing of the distribution box of each power supply unit in the power supply system must be reliably grounded!
In order to guarantee the continuity of power supply, shorten switching in-process power off-time as far as possible, avoid the power "flash" consumer to appear stopping, the utility model discloses do not set up time relay among the switching circuit, nevertheless through the action time of auxiliary relay KA1 and the interlocking of ac contactor normally closed contact switch, ensure that the switching in-process can not take place the short circuit.
In general, a UPS with a power exceeding kw has a large capacity. A UPS of several hundred watts generally can only drive computers, scanners, fax machines, and other devices. Because the storage battery is large in size, the capacity of the UPS reaches 1KVA (600W), and an external storage battery is required to be arranged when the power supply time exceeds 10 minutes. When the capacity of the storage battery is fixed, the larger the output power is, the shorter the power supply time is; the charging and discharging of the storage battery have efficiency problems, and the rectification and inversion of the UPS power supply also have efficiency problems, so the actual power supply time is less than the theoretical power supply time. And the utility model discloses do not have power conversion's energy loss, power supply capacity is big, long, efficient, the loss is little, and the system is with low costs, and the running cost is low. The above analysis fully illustrates the superiority and necessity of the power supply interconnection of the local area network.

Claims (3)

1. The utility model provides an inside LAN power supply interconnection power supply system of enterprise which characterized in that: the air circuit breakers are respectively arranged in main circuits of the main power supply and the standby power supply, the alternating current contactors are also two, a coil power supply end of the first alternating current contactor is connected with the main power supply, an inlet end of a main contact of the first alternating current contactor is connected with the first air circuit breaker in series, and an outlet end of the first alternating current contactor is used as a load power supply; a coil power supply end of the second alternating current contactor is connected with a standby power supply, a wire inlet end of a main contact of the second alternating current contactor is connected with the second air circuit breaker in series, and a wire outlet end is used as a load power supply; the coil power supply end of the intermediate relay is connected with a main power supply, the auxiliary normally-open contact of the intermediate relay is connected in series to the coil power supply loop of the first alternating current contactor, and the auxiliary normally-closed contact is connected in series to the coil power supply loop of the second alternating current contactor.
2. The system according to claim 1, wherein: the main power supply and the backup power supply are electrically interlocked through auxiliary normally closed contacts of the first ac contactor KM1 and the second ac contactor KM 2.
3. The system according to claim 1, wherein: when the power supplies are three or more, the first power supply unit and the second power supply unit are standby power supplies, the third first power supply unit takes the second power supply unit as the standby power supply, and other power supply units take the previous power supply as the standby power supply.
CN201921470738.9U 2019-09-05 2019-09-05 Intra-enterprise local area network power supply interconnection power supply system Expired - Fee Related CN210577931U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921470738.9U CN210577931U (en) 2019-09-05 2019-09-05 Intra-enterprise local area network power supply interconnection power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921470738.9U CN210577931U (en) 2019-09-05 2019-09-05 Intra-enterprise local area network power supply interconnection power supply system

Publications (1)

Publication Number Publication Date
CN210577931U true CN210577931U (en) 2020-05-19

Family

ID=70642095

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921470738.9U Expired - Fee Related CN210577931U (en) 2019-09-05 2019-09-05 Intra-enterprise local area network power supply interconnection power supply system

Country Status (1)

Country Link
CN (1) CN210577931U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200519

Termination date: 20200905

CF01 Termination of patent right due to non-payment of annual fee