CN204714366U - A kind of hoisting crane extended-range hybrid power system - Google Patents

A kind of hoisting crane extended-range hybrid power system Download PDF

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Publication number
CN204714366U
CN204714366U CN201520291952.3U CN201520291952U CN204714366U CN 204714366 U CN204714366 U CN 204714366U CN 201520291952 U CN201520291952 U CN 201520291952U CN 204714366 U CN204714366 U CN 204714366U
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energy
output terminal
current output
brake unit
frequency converter
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CN201520291952.3U
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郑坚炼
邹来
余咏辉
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POWERTEC GENERATOR SYSTEM Co Ltd
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POWERTEC GENERATOR SYSTEM Co Ltd
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Abstract

The utility model discloses a kind of hoisting crane extended-range hybrid power system, comprise generator set, controllable rectifying device, closed-center system, inverter power supply device, frequency converter, brake unit, the current output terminal of generator set is connected with the current input terminal on closed-center system, inverter power supply device, frequency converter and brake unit respectively by controllable rectifying device; The current output terminal of inverter power supply device connects external auxiliary device, for direct supply being converted to the source of AC of frequency stabilization, voltage stabilization, for external auxiliary device is powered; The current output terminal connecting power device of frequency converter, for direct supply being converted to the source of AC of frequency-adjustable, for engine installation is powered; The current output terminal of brake unit connects energy consumption resistance.The utility model adopts closed-center system to provide energy for hoisting crane, stores and discharges, reduce and consume regenerating braking energy in the mode of heat energy energy, can reduce generating set capacity simultaneously, play the effect of energy-saving and emission-reduction.

Description

A kind of hoisting crane extended-range hybrid power system
Technical field
The utility model relates to electric system, particularly relates to a kind of extended-range hybrid power system of energy reclaiming crane regenerating braking energy.
Background technology
Rubber tyre gantry crane (RTG is called for short gauntry crane) is the special-purpose machinery of Large-scale professional container depot, for loading and unloading standard container.Rubber tyre gantry crane runs and steering hardware, wheeling mechanism, diesel oil group of motors and external auxiliary device composition primarily of steel structure, lifting mechanism, cart.Gauntry crane is equipped with diesel engine unit as power source, is produced the mechanisms such as driven by power hoists, cart, dolly and external auxiliary device by diesel powerplant.Because its maneuverability can transition operation, widely used at vast container operation harbour.
The work flow of gauntry crane to transfer to the container face that trailer draws for: suspender from extreme higher position, capture freight container, be raised to extreme higher position, travelling car is to stockyard assigned address, freight container is transferred to assigned address, suspender is raised to extreme higher position, and dolly is return trailer and is expert at, and completes a duty cycle.In whole process, promote and need in dolly moving process to consume external energy at suspender, transfer and dolly braking procedure generation regenerating braking energy at suspender, the current processing mode of this portion of energy is mainly consumed by energy consumption resistance, wastes.According to conservation energy, the required energy consumed of whole operation process only needs institute catabiotic 20% at present in theory.Also have the energy of 80% to be wasted at present with regard to meaning, these include: the braking energy of consumption on energy consumption resistance produced with dolly braking procedure in suspender decentralization process, and the consumption produced in conversion process of energy etc.
The frequency-changing control system of what current most of harbour rubber tyre gantry crane adopted is common DC master row.When alternating current dynamo is operated in generating state, electric energy feedback DC bus, DC bus-bar voltage is raised, brake unit detects DC bus-bar voltage, when bus voltage is elevated to the setting value that brake unit opens, brake unit is opened, and electric current passes through energy consumption resistance, consume regenerating braking energy in the mode of heat energy, thus bus voltage is remained in normal range.Electric current, by energy consumption resistance, with the mode consumed energy of heat energy, very wastes electric energy.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of hoisting crane extended-range hybrid power system, reclaiming crane regenerating braking energy, more energy-conservation and reduction discharge.
For solving the problems of the technologies described above, the utility model proposes a kind of hoisting crane extended-range hybrid power system, comprising generator set, controllable rectifying device, closed-center system, inverter power supply device, frequency converter, brake unit, wherein,
The current output terminal of described generator set is connected with the current input terminal on closed-center system, inverter power supply device, frequency converter and brake unit respectively by controllable rectifying device;
The current output terminal of described inverter power supply device connects external auxiliary device, for direct supply being converted to the source of AC of frequency stabilization, voltage stabilization, for external auxiliary device is powered;
The current output terminal connecting power device of described frequency converter, for direct supply being converted to the source of AC of frequency-adjustable, for engine installation is powered;
The current output terminal of described brake unit connects energy consumption resistance.
Further, described engine installation comprises driving lifting mechanism.
Technique scheme at least has following beneficial effect: the utility model adopts closed-center system to provide energy for hoisting crane, energy is stored and discharges, reduce and consume regenerating braking energy in the mode of heat energy, more energy-conservation, can generating set capacity be reduced simultaneously, play the effect of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the utility model hoisting crane extended-range hybrid power system.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model hoisting crane extended-range hybrid power system comprises diesel powerplant 1, controllable rectifying device 2, closed-center system 3, inverter power supply device 4, frequency converter 5, brake unit 6, wherein, the current output terminal of diesel powerplant 1 is connected with the current input terminal on closed-center system 3, inverter power supply device 4, frequency converter 5 and brake unit 6 respectively by controllable rectifying device 2.
The current output terminal of inverter power supply device 4 connects external auxiliary device 7, for direct supply being converted to the source of AC of frequency stabilization, voltage stabilization, for external auxiliary device 7 is powered.
The current output terminal connecting power device 8 of frequency converter 5, for direct supply being converted to the source of AC of frequency-adjustable, for engine installation 8 is powered, such as driving lifting mechanism, the large power supply such as mechanism of car and trolley body.
The current output terminal of brake unit 6 connects energy consumption resistance 9.
When we are used in the electric system of rubber tyre gantry crane for the utility model extended-range hybrid power system, further illustrate its principle of work.
When hoisting crane normally works, the direct supply that closed-center system 3 exports is converted to the source of AC of frequency stabilization, voltage stabilization by frequency converter 5, power for external auxiliary device 7.
When engine installation 8 is braked, when such as lifting mechanism declines or when mechanism of car, trolley body are braked greatly, the electric energy feedback that electrical motor when lifting mechanism declines or in trailer mechanism sends is on DC bus, and bus voltage is raised, and closed-center system 3 carries out charging energy-storing; When detecting that closed-center system 3 is full of or bus voltage raise when reaching the threshold values of setting, brake unit 6 opens energy consumption resistance 9, consumes unnecessary energy.
When hoisting crane starts or promote heavy load, closed-center system 3 provides Energy transmission, when closed-center system 3 capacity of cell reaches the low capacity threshold values of setting, diesel powerplant 1 starts, and controls diesel powerplant 1 come to energy-storage battery makeup energy with the most energy-conservation power stage by controllable rectifying device 2; When closed-center system 3 capacity reaches the full capacity threshold values of setting, diesel powerplant 1 is shut down.Therefore, the utility model adopts closed-center system store energy and discharge, and reduces and consumes regenerating braking energy in the mode of heat energy, more energy-conservation.
The above is detailed description of the invention of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.

Claims (2)

1. a hoisting crane extended-range hybrid power system, is characterized in that, comprises generator set, controllable rectifying device, closed-center system, inverter power supply device, frequency converter, brake unit, wherein,
The current output terminal of described generator set is connected with the current input terminal on closed-center system, inverter power supply device, frequency converter and brake unit respectively by controllable rectifying device;
The current output terminal of described inverter power supply device connects external auxiliary device, for direct supply being converted to the source of AC of frequency stabilization, voltage stabilization, for external auxiliary device is powered;
The current output terminal connecting power device of described frequency converter, for direct supply being converted to the source of AC of frequency-adjustable, for engine installation is powered;
The current output terminal of described brake unit connects energy consumption resistance.
2. hoisting crane extended-range hybrid power system as claimed in claim 1, it is characterized in that, described engine installation comprises driving lifting mechanism.
CN201520291952.3U 2015-05-07 2015-05-07 A kind of hoisting crane extended-range hybrid power system Active CN204714366U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520291952.3U CN204714366U (en) 2015-05-07 2015-05-07 A kind of hoisting crane extended-range hybrid power system

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Application Number Priority Date Filing Date Title
CN201520291952.3U CN204714366U (en) 2015-05-07 2015-05-07 A kind of hoisting crane extended-range hybrid power system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106044556A (en) * 2016-07-22 2016-10-26 常州麒麟自动化系统有限公司 Hybrid power RTG hauling-up device
CN107848773A (en) * 2015-06-23 2018-03-27 利勃海尔比伯拉赫零部件有限公司 Crane and the method for controlling crane
CN109552065A (en) * 2018-11-13 2019-04-02 武汉理工大学 A kind of hybrid power system and its working method based on super capacitor group

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107848773A (en) * 2015-06-23 2018-03-27 利勃海尔比伯拉赫零部件有限公司 Crane and the method for controlling crane
RU2712735C2 (en) * 2015-06-23 2020-01-30 Либхерр-Компонентс Биберах Гмбх Crane and method for control thereof
CN106044556A (en) * 2016-07-22 2016-10-26 常州麒麟自动化系统有限公司 Hybrid power RTG hauling-up device
CN109552065A (en) * 2018-11-13 2019-04-02 武汉理工大学 A kind of hybrid power system and its working method based on super capacitor group

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