CN210608670U - Temporary emergency replacing device for lead-acid storage battery of nuclear island of nuclear power plant - Google Patents
Temporary emergency replacing device for lead-acid storage battery of nuclear island of nuclear power plant Download PDFInfo
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- CN210608670U CN210608670U CN201921509378.9U CN201921509378U CN210608670U CN 210608670 U CN210608670 U CN 210608670U CN 201921509378 U CN201921509378 U CN 201921509378U CN 210608670 U CN210608670 U CN 210608670U
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Abstract
The utility model relates to a nuclear power equipment overhauls technical field, specifically disclose nuclear power plant's nuclear island lead acid battery is emergent substitution device temporarily, in storage battery charging process, outside 220V power inserts external power source interface, the total service entrance switch is closed supplies the power to battery management device, select corresponding voltage level through operating man-machine operation module, and do corresponding return circuit through voltage level selector switch and switch, later the storage battery service entrance switch is closed, select the charge mode and start charging through man-machine operation module, charge by module output voltage that charges to storage battery. The utility model discloses emergent substitution device can provide interim power supply guarantee when generating line DC power supply and main battery lose, for the generating line in the at least hour of the continuous power supply of labour load, for power station operation personnel's safety measure response time of setting aside, has ensured the major repair plan progress of unit, has practiced thrift the time cost.
Description
Technical Field
The utility model belongs to the technical field of nuclear power equipment overhauls, concretely relates to nuclear power plant's nuclear island lead acid battery is emergent substitution device temporarily.
Background
The direct current bus of the nuclear island of the nuclear power plant is guaranteed by taking a storage battery as a backup power supply during operation, under a normal working condition, the direct current bus is carried by a charger, and the storage battery at the downstream of the bus is in a floating charge state; under the accident condition, if the charger stops running, the storage battery supplies power to the direct current bus. Meanwhile, in order to make the operation of the direct current bus more reliable, the direct current bus system manual of the nuclear power plant provides that the reliability of the charger can be guaranteed only when the storage battery and the charger are operated in parallel, so that the direct current bus is forbidden to be disconnected from the storage battery for operation.
The purpose of this requirement is to avoid that, during the operation of the battery, once the charger is unavailable, the direct current bus is directly powered off, and the operator has no time to take a safety measure to respond, so that if the battery needs to be withdrawn from the bus, the corresponding direct current switchboard needs to be accompanied and stopped, which not only affects the power supply continuity of the downstream load, but also may cause the change of the state of the unit.
In order to deal with the situation and avoid unpredictable risks, the design and development of the temporary emergency replacement device for the lead-acid storage battery commonly used in the nuclear island of the nuclear power plant are particularly necessary.
Disclosure of Invention
An object of the utility model is to provide a nuclear power plant's nuclear island lead acid battery is emergent substitution device temporarily, when the main battery outage overhauls, provides interim reserve power for direct current bus.
The technical scheme of the utility model as follows:
the temporary emergency replacement device for the nuclear island lead-acid storage battery in the nuclear power plant comprises an external framework, and a battery management device, a storage battery pack, an electric loop protection device, an external power interface, an air switch group and an input/output terminal row which are integrated in the external framework;
the battery management device comprises a central data processing unit, a voltage grade selection switch, a data acquisition unit, a balance management module, a charging module, a man-machine operation module, an alarm unit and a protection unit;
the central data processing unit collects the voltage and current parameters of the storage battery collected by the data collecting unit, compares the voltage and current parameters with an internal set value, and judges whether alarming is needed or protective measures are needed, so that signals are sent to the alarming unit and the protective unit to execute relevant alarming and protective logics; meanwhile, the central data processing unit controls the action of a voltage grade selection switch by receiving information input by the man-machine operation module, combines the storage battery into different voltage grades of 48V or 110V, or controls a charging module to charge the storage battery according to an input command of the man-machine operation module and controls the action of the balance management module;
the voltage grade selection switch can be set by an operator through a man-machine operation module, and different series and parallel combinations are carried out on the storage battery pack according to the instruction of the central data processing unit, so that the voltage grade of the storage battery is switched;
the data acquisition unit transmits the acquired voltage and current data of the storage battery to the central data processing unit, and is used for monitoring the charging and discharging process of the storage battery and judging whether the system is normal or not;
the balance management module performs balance management on the charging of the storage batteries by adopting an energy consumption method, consumes part of surplus electric quantity in the storage batteries and keeps the charging capacity of each storage battery balanced;
the charging module can display the charging and discharging voltage and current parameters of the storage battery;
the man-machine operation module is mainly used for touch screen operation of a user, can select the voltage grade of the storage battery pack and can set and check the charge and discharge parameters of the whole system;
the alarm unit generates sound and light alarm according to the instruction sent by the central data processing unit;
the protection unit stops the charging and discharging process when a fault occurs according to an instruction sent by the central data processing unit, and protects the system;
the external frame is a cubic cabinet, and a power indicator lamp, a voltage ammeter and a man-machine operation module are arranged on the cabinet door;
the three power supply indicator lamps are respectively used for incoming line voltage input indication, 48V voltage output indication and 110V voltage output indication from left to right, and when the voltage signals exist, the corresponding power supply indicator lamps are always on;
the number of the voltage ammeters is three, and the voltage value of a power inlet wire of the substitution device, the output voltage value of the storage battery and the output current value are represented from left to right respectively;
the internal part of the external frame is divided into three layers, the battery management device is arranged on the uppermost layer, the electric loop protection device, the external power supply interface, the air switch group and the input/output terminal row are arranged on the middle layer, and the storage battery pack is stored on the lowest layer;
the electric loop protection device can perform quick-break protection when the storage battery pack is short-circuited, so that the electric loop and the battery management device are prevented from being damaged;
an external power supply is accessed to the battery management device through the external power supply interface;
the air switch group comprises an equipment main incoming line switch, a storage battery incoming line switch and a storage battery output switch and is used for electrical isolation and protection;
the input and output terminal row is used for terminating input and output cables of the storage battery, wherein the input terminal row can butt the incoming cable of the storage battery with the battery management device, and the output terminal row can butt the outgoing cable of the storage battery with an external load;
an external power supply is supplied to the battery management device through the main incoming line switch and then is output to the storage battery pack through the storage battery incoming line switch, and the storage battery pack supplies direct current to a downstream load through the storage battery output switch.
The storage battery pack comprises 9 sections of maintenance-free lead-acid storage batteries, the voltage of each section is 12V, and the capacity of each section is more than 65 Ah;
when a user selects 48V storage battery output, a switch in a voltage class selection switch is arranged on a contact 1, two groups of storage batteries are connected in parallel, and each group of 4 sections of maintenance-free lead-acid storage batteries form a 48V storage battery pack with double capacity; when the user selects the output of the 110V storage battery, a switch in the voltage grade selection switch is arranged on a contact 2, and 9 storage batteries are connected in series to form the 110V storage battery pack.
The charging module can provide floating charge and uniform charge for the storage battery pack.
And the four corners of the bottom surface of the external frame are respectively provided with a universal wheel for pushing.
The electric loop protection device is a fuse.
The sound and light alarm generated by the alarm unit comprises storage battery overvoltage, storage battery overcurrent and fan alarm.
The man-machine operation module comprises the functions of parameter setting modification, voltage selection, equipment state checking, alarm inquiry, reset and the like.
The voltage grade selection switch is a two-gear type selection switch.
In the charging process of the storage battery pack, an external 220V power supply is connected into an external power supply interface, a main incoming line switch is closed to supply power to a battery management device, a corresponding voltage grade is selected by operating a man-machine operation module, corresponding loop switching is performed through a voltage grade selection switch, then the incoming line switch of the storage battery is closed, a charging mode is selected through the man-machine operation module, charging is started, and the charging module outputs voltage to the storage battery pack for charging.
In the discharging process of the storage battery pack, the corresponding voltage grade is selected through the man-machine operation module, the storage battery loop is switched through the voltage grade selection switch, then the storage battery output switch is closed, and the direct-current voltage is transmitted to a downstream load.
The beneficial effects of the utility model reside in that:
(1) the utility model discloses emergent substitution device can provide interim power supply guarantee when generating line DC power supply and main battery lose, for the generating line in the at least hour of the continuous power supply of labour load, for power station operation personnel's safety measure response time of setting aside, has ensured the major repair plan progress of unit, has practiced thrift the time cost.
(2) The utility model relates to a general substitution device can realize functions such as switching, battery voltage current protection of different voltage levels.
(3) The utility model discloses can show in real time and monitor the charge-discharge state of battery, in time intervene safeguard measure. After the discharging is finished, the storage battery can be subjected to floating charging and equalizing charging through the charging module and the equalizing management module.
Drawings
FIG. 1 is a hardware block diagram of an alternative device;
FIG. 2 is an external view of an alternative apparatus;
FIG. 3 is a diagram of the internal hardware architecture of the alternate device;
fig. 4 is an electrical wiring diagram of an alternative device.
In the figure: 1. a central data processing unit; 2. a voltage class selection switch; 3. a data acquisition unit; 4. a balance management module; 5. a charging module; 6. a human-machine operation module; 7. an alarm unit; 8. a protection unit; 9. a battery management device; 10. a battery pack; 11. an electrical circuit protection device; 12. an external power interface; 13. an air switch group; 14. an input/output terminal row; 15. a voltage ammeter; 16. a power indicator light; 17. a universal wheel; 18. an outer frame; 19. a main incoming line switch; 20. a storage battery incoming line switch; 21. and a storage battery output switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The temporary emergency replacement device for the nuclear island lead-acid storage battery of the nuclear power plant shown in fig. 1 comprises an external frame 18, and a battery management device 9, a storage battery pack 10, an electric loop protection device 11, an external power interface 12, an air switch group 13 and an input and output terminal row 14 which are integrated in the external frame 18. The battery management device 9 comprises a central data processing unit 1, a voltage grade selection switch 2, a data acquisition unit 3, a balance management module 4, a charging module 5, a man-machine operation module 6, an alarm unit 7 and a protection unit 8.
The central data processing unit 1 collects the storage battery voltage and current parameters collected by the data collecting unit 3, compares the storage battery voltage and current parameters with internal set values, judges whether alarming is needed or protective measures are needed, and then sends signals to the alarming unit 7 and the protecting unit 8 to execute relevant alarming and protecting logics. Meanwhile, the central data processing unit 1 controls the action of the voltage grade selection switch 2 by receiving the information input by the man-machine operation module 6, combines the storage battery packs 10 into different voltage grades of 48V or 110V, or controls the charging module 5 to charge the storage battery packs 10 according to the input command of the man-machine operation module 6, and controls the action of the balance management module 4.
The voltage grade selection switch 2 is a two-gear type selection switch, can be set by an operator through the man-machine operation module 6, and carries out different series and parallel combinations on the storage battery pack 10 according to the instruction of the central data processing unit 1, thereby realizing the switching of the voltage grade of the storage battery.
The data acquisition unit 3 transmits the acquired voltage and current data of the storage battery to the central data processing unit 1, and is used for monitoring the charging and discharging process of the storage battery and judging whether the running state of the system is normal or not.
The balance management module 4 performs balance management on the charging of the storage batteries by adopting an energy consumption method, consumes part of surplus electric quantity in the storage batteries, and keeps the charging capacity of each storage battery balanced.
The charging module 5 provides floating charge and uniform charge for the storage battery pack 10, and can display parameters such as charging, discharging voltage, current and the like of the storage battery.
The human-machine operation module 6 can select the voltage grade of the storage battery pack 10 and set and check the charge and discharge parameters of the whole system.
The alarm unit 7 generates audible and visual alarms, such as "battery overvoltage", "battery overcurrent", "fan alarm" and the like, according to the instruction sent by the central data processing unit 1.
And the protection unit 8 stops the charging and discharging process when a fault occurs according to an instruction sent by the central data processing unit 1, so as to protect the system.
The storage battery pack 10 comprises 9 maintenance-free lead-acid storage batteries, the voltage of each battery is 12V, and the capacity of each battery is more than 65 Ah. When the battery runs by adopting the output voltage of 48V, two groups of storage batteries are connected in parallel, and each group of 4 sections of maintenance-free lead-acid storage batteries are connected in parallel; when the battery operates by adopting the output voltage of 110V, 9 sections of maintenance-free lead-acid storage batteries are connected in series.
As shown in fig. 2, the external frame 18 is a cubic cabinet with a height of 1200mm × a width of 600mm × a depth of 800mm, and a power indicator 16, a voltage/current meter 15, and a human-machine operation module 6 are disposed on the cabinet door. And universal wheels 17 are respectively arranged at four corners of the bottom surface of the external frame 18 and can be pushed. The power indicator lamps 16 are three and respectively used for incoming line voltage input indication, 48V voltage output indication and 110V voltage output indication from left to right, and when the voltage signals exist, the corresponding power indicator lamps 16 are always on. The number of the voltage and current meters 15 is three, and the power supply incoming line voltage value, the storage battery output voltage value and the output current value of the substitution device are represented from left to right respectively. The man-machine operation module 6 is mainly used for touch screen operation of a user, and comprises functions of parameter setting modification, voltage selection, equipment state checking, alarm inquiry, reset and the like.
As shown in fig. 3, the external frame 18 is divided into three layers, and the battery management device 9 is mounted on the uppermost layer; the middle layer is provided with an electric loop protection device 11, an external power supply interface 12, an air switch group 13 and an input/output terminal row 14; the lowermost layer stores the battery pack 10.
The electric circuit protection device 11 is mainly a fuse, and performs quick-break protection when the storage battery pack 10 is short-circuited, so as to avoid damaging the electric circuit and the battery management device 9.
The battery management device 9 is connected with an external power supply through the external power supply interface 12.
The air switch group 13 comprises miniature circuit breakers needing manual intervention, such as an equipment main incoming line switch 19, a storage battery incoming line switch 20, a storage battery output switch 21 and the like, and is used for electrical isolation and protection.
The input and output terminal row 14 is used for terminating input and output cables of the storage battery, wherein the input terminal row can butt the incoming cable of the storage battery pack 10 with the battery management device 9, and the output terminal row can butt the outgoing cable of the storage battery pack 10 with an external load.
As shown in fig. 4, an external power supply is supplied to the battery management device 9 through the main incoming switch 19, and then is output to the storage battery pack 10 through the storage battery incoming switch 20, when a user selects 48V storage battery output, a switch in the voltage class selection switch 2 is placed at the contact 1, and two groups of 4 storage batteries are connected in parallel to form a 48V storage battery pack with double capacity; when the user selects the output of the 110V storage battery, the switch in the voltage grade selection switch 2 is arranged on the contact 2, and 9 storage batteries are connected in series to form the 110V storage battery pack. The battery pack 10 supplies dc power to downstream loads through a battery output switch 21.
The specific workflow of the alternative device is as follows:
charging the storage battery, namely, a user accesses an external 220V power supply into the external power supply interface 12, then closes the main incoming line switch 15 to supply the power supply to the battery management device 9, the user selects a corresponding voltage grade through operating the man-machine operation module 6, performs corresponding loop switching through the voltage grade selection switch 2, then closes the storage battery incoming line switch 20, then operates the man-machine operation module 6 to select a charging mode and starts charging, and then outputs voltage to the storage battery pack 10 through the charging module 5 to charge.
Storage battery discharging, namely, a user operates the man-machine operation module 6 to select a corresponding voltage grade according to the voltage grade of a load, performs storage battery loop switching through the voltage grade selection switch 2, and then closes the storage battery output switch 21 to transmit direct-current voltage to a downstream load.
During the charging and discharging of the battery pack 10, the electrical circuit protection device 11 performs short-circuit protection on the entire electrical circuit, and the protection unit 8 also stops the charging and discharging process at the time of a failure according to an instruction from the central data processing unit 1 to protect the battery management device 9.
During the charging and discharging of the battery pack 10, the power indicator lamp 16 will select the corresponding indicator lamp to light according to the actual voltage level. The voltage ammeter 15 displays the inlet line voltage value of the power supply of the substitute device, the output voltage value of the storage battery and the output current value in real time.
When direct current bus loses main battery, the utility model discloses the device can provide interim power supply guarantee, if the charger is unavailable this moment, the utility model discloses the device can supply power more than 1 hour in succession, reserves the time for operation personnel's safety measure response. The utility model discloses the device has not only avoided the stopping time of direct current generating line when main battery is unavailable, has ensured direct current load's continuous power supply, has also ensured the overhaul plan progress of unit simultaneously, has practiced thrift the time cost.
It is only above the utility model discloses an embodiment, the utility model discloses a protection scope not only limits in above-mentioned implementation scope, and the all belong to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a protection scope is not deviating from the utility model discloses a plurality of improvements and moist decorations under the principle prerequisite also should be regarded as the utility model discloses a protection scope.
Claims (10)
1. Nuclear island lead acid battery of nuclear power plant is emergent substitution device temporarily, its characterized in that: the air switch comprises an external frame (18), and a battery management device (9), a storage battery pack (10), an electric loop protection device (11), an external power interface (12), an air switch group (13) and an input/output terminal row (14) which are integrated in the external frame (18);
the battery management device (9) comprises a central data processing unit (1), a voltage level selection switch (2), a data acquisition unit (3), a balance management module (4), a charging module (5), a man-machine operation module (6), an alarm unit (7) and a protection unit (8);
the central data processing unit (1) collects the voltage and current parameters of the storage battery collected by the data collecting unit (3), compares the voltage and current parameters with an internal set value, judges whether alarming is needed or protective measures are taken, and then sends signals to the alarming unit (7) and the protecting unit (8) to execute relevant alarming and protecting logics; meanwhile, the central data processing unit (1) controls the action of the voltage grade selection switch (2) by receiving information input by the man-machine operation module (6), combines the storage battery pack (10) into different voltage grades of 48V or 110V, or controls the charging module (5) to charge the storage battery pack (10) according to an input command of the man-machine operation module (6) and controls the action of the balance management module (4);
the voltage grade selection switch (2) can be set by an operator through the man-machine operation module (6), and different series and parallel combinations are carried out on the storage battery pack (10) according to the instruction of the central data processing unit (1) to realize the switching of the voltage grade of the storage battery;
the data acquisition unit (3) transmits the acquired voltage and current data of the storage battery to the central data processing unit (1) for monitoring the charging and discharging process of the storage battery and judging whether the system is normal or not;
the balance management module (4) performs balance management on the charging of the storage batteries by adopting an energy consumption method, consumes part of surplus electric quantity in the storage batteries and keeps the charging capacity of each storage battery balanced;
the charging module (5) can display the charging and discharging voltage and current parameters of the storage battery;
the man-machine operation module (6) is mainly used for touch screen operation of a user, can select the voltage grade of the storage battery pack (10), and can set and check the charge and discharge parameters of the whole system;
the alarm unit (7) generates sound and light alarm according to the instruction sent by the central data processing unit (1);
the protection unit (8) stops the charging and discharging process when a fault occurs according to an instruction sent by the central data processing unit (1) to protect the system;
the external frame (18) is a cubic cabinet, and a power indicator lamp (16), a voltage ammeter (15) and a man-machine operation module (6) are arranged on a cabinet door;
the three power supply indicator lamps (16) are respectively used for incoming line voltage input indication, 48V voltage output indication and 110V voltage output indication from left to right, and when the voltage signals exist, the corresponding power supply indicator lamps (16) are normally on;
the number of the voltage and current meters (15) is three, and the voltage value of the power inlet wire of the substitution device, the output voltage value of the storage battery and the output current value are represented from left to right respectively;
the internal part of the external frame (18) is divided into three layers, the battery management device (9) is installed on the uppermost layer, the electric loop protection device (11), the external power supply interface (12), the air switch group (13) and the input/output terminal row (14) are installed on the middle layer, and the storage battery pack (10) is stored on the lowest layer;
the electric loop protection device (11) can perform quick-break protection when the storage battery pack (10) is short-circuited, so that the electric loop and the battery management device (9) are prevented from being damaged;
an external power supply is accessed to the battery management device (9) through the external power supply interface (12);
the air switch group (13) comprises an equipment main incoming line switch (19), a storage battery incoming line switch (20) and a storage battery output switch (21) and is used for electrical isolation and protection;
the input and output terminal row (14) is used for terminating input and output cables of the storage battery, wherein the input terminal row can butt joint the incoming cable of the storage battery pack (10) with the battery management device (9), and the output terminal row can butt joint the outgoing cable of the storage battery pack (10) with an external load;
an external power supply is supplied to the battery management device (9) through the main incoming switch (19) and then is output to the storage battery pack (10) through the storage battery incoming switch (20), and the storage battery pack (10) supplies direct current to a downstream load through the storage battery output switch (21).
2. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 1, characterized in that: the storage battery pack (10) comprises 9 sections of maintenance-free lead-acid storage batteries, the voltage of each section is 12V, and the capacity of each section is more than 65 Ah;
when a user selects 48V storage battery output, a switch in the voltage class selection switch (2) is arranged on a contact 1, two groups of storage batteries are connected in parallel, and each group of 4 sections of maintenance-free lead-acid storage batteries form a 48V storage battery pack with double capacity; when the user selects the output of the 110V storage battery, a switch in the voltage grade selection switch (2) is arranged on a contact 2, and 9 storage batteries are connected in series to form the 110V storage battery pack.
3. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 2, characterized in that: the charging module (5) can provide floating charge and uniform charge for the storage battery pack (10).
4. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 3, characterized in that: and universal wheels (17) are respectively arranged at four corners of the bottom surface of the external frame (18) and can be pushed.
5. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 4, characterized in that: the electric loop protection device (11) is a fuse.
6. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 5, characterized in that: the sound and light alarm generated by the alarm unit (7) comprises storage battery overvoltage, storage battery overcurrent and fan alarm.
7. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 6, characterized in that: the man-machine operation module (6) comprises the functions of parameter setting modification, voltage selection, equipment state checking, alarm inquiry, reset and the like.
8. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant according to claim 7, characterized in that: the voltage grade selection switch (2) is a two-gear type selection switch.
9. The temporary emergency replacement device for the nuclear island lead-acid storage battery of the nuclear power plant as claimed in any one of claims 1 to 8, wherein: in the charging process of the storage battery pack (10), an external 220V power supply is connected into an external power supply interface (12), a main incoming line switch (19) is closed to supply power to a battery management device (9), a corresponding voltage grade is selected by operating a man-machine operation module (6), corresponding loop switching is well performed through a voltage grade selection switch (2), then a storage battery incoming line switch (20) is closed, a charging mode is selected through the man-machine operation module (6) and charging is started, and a charging module (5) outputs voltage to the storage battery pack (10) for charging.
10. The temporary emergency replacement device for the nuclear island lead-acid storage battery of a nuclear power plant of claim 9, wherein: in the discharging process of the storage battery pack (10), the corresponding voltage grade is selected through the man-machine operation module (6), the storage battery loop switching is completed through the voltage grade selection switch (2), then the storage battery output switch (21) is closed, and the direct-current voltage is transmitted to a downstream load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921509378.9U CN210608670U (en) | 2019-09-11 | 2019-09-11 | Temporary emergency replacing device for lead-acid storage battery of nuclear island of nuclear power plant |
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| CN201921509378.9U CN210608670U (en) | 2019-09-11 | 2019-09-11 | Temporary emergency replacing device for lead-acid storage battery of nuclear island of nuclear power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636451A (en) * | 2020-12-12 | 2021-04-09 | 青岛鼎信通讯股份有限公司 | Modular standby power supply device for acquisition terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636451A (en) * | 2020-12-12 | 2021-04-09 | 青岛鼎信通讯股份有限公司 | Modular standby power supply device for acquisition terminal |
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