CN102535563A - Energy saving device of grab-bucket excavator for ship - Google Patents
Energy saving device of grab-bucket excavator for ship Download PDFInfo
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- CN102535563A CN102535563A CN2011104511074A CN201110451107A CN102535563A CN 102535563 A CN102535563 A CN 102535563A CN 2011104511074 A CN2011104511074 A CN 2011104511074A CN 201110451107 A CN201110451107 A CN 201110451107A CN 102535563 A CN102535563 A CN 102535563A
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Abstract
The invention relates to an energy saving device of a grab-bucket excavator for a ship. According to the energy saving device of the grab-bucket excavator for the ship, a DC/DC conversion device consists of a two-way DC/DC conversion device and a one-way DC/DC conversion device which work in a positive direction and a negative direction, a lifting frequency converter, a rotating frequency converter and a capacitance managing and balancing component are connected with a generator set, the lifting frequency converter and the rotating frequency converter are arranged in parallel, the lifting frequency converter and a lifting motor are connected in series, the rotating frequency converter and a rotating motor are connected in series, one end of the two-way DC/DC conversion device is connected with a direct-current bus bar of the lifting frequency converter, the other end of the two-way DC/DC conversion device is connected with a super capacitor, one end of the one-way DC/DC conversion device is connected with the rotating frequency converter, the other end of the one-way DC/DC conversion device is connected with the super capacitor, the DC/DC conversion device is provided with a power supply circuit and a control circuit, the power supply circuit is connected with the capacitance managing and balancing component, and the control circuit is connected with the capacitance managing and balancing component and a current transformer.
Description
Technical field
The present invention relates to a kind of energy saver of clamp excavator peculiar to vessel, particularly a kind of energy saver that utilizes super capacitor as the buffering power source is applied in the clamp excavator peculiar to vessel.
Background technology
Existing in the energy severe day by day today, energy-saving and emission-reduction have become society with the common topic of paying close attention to of enterprise.Because it not only can reduce the energy loss of society, alleviate the burden of environment, and can increase economic benefit of enterprises.
Clamp excavator peculiar to vessel grasps silt under water because the particularity of operation situation is grabbed bucket and transferred under water from the high position, is elevated to the high position, turns to the unloading ship position.Unloading silt, and then change of team origin-location are accomplished a duty cycle.
In whole process, grab bucket promotes with revolution to be needed to consume external energy, in grab bucket is transferred with the rotary braking process, produces recovered energy, and the present processing method of this portion of energy is to consume through energy consumption resistance, wastes.What be specially clamp excavator employing peculiar to vessel is the PLC frequency-changing control system, and when producing recovered energy, alternating current generator is operated in generating state; Electric energy feeds back to dc bus, and DC bus-bar voltage is raise, and brake unit (DBU) detects DC bus-bar voltage; When busbar voltage was elevated to the setting value that brake unit opens, the IGBT of DBU opened, and electric current passes through energy consumption resistance; Mode with heat energy consumes regenerating braking energy, thereby busbar voltage is remained in the normal range (NR).According to the conservation of energy, the energy of the required consumption of entire job process only needs 60% of present required consumption in theory.This just means that it is to have wasted that 40% energy is arranged at present, and these have comprised: grab bucket is transferred in the process with in the rotary braking process and consumed the braking energy on energy consumption resistance, and the consumption that produces in the conversion process of energy or the like.
Summary of the invention
Technical problem to be solved by this invention provides a kind of reasonable in design, can reclaim the energy of waste efficiently, the energy saver of safe and reliable, stable clamp excavator peculiar to vessel.
The present invention solves the problems of the technologies described above the energy saver that the technical scheme that is adopted is this clamp excavator peculiar to vessel; Be characterized in: form by current transformer, lifting frequency converter, lifting motor, revolution frequency converter, turning motor, super capacitor assembly, capacitance management and balanced component thereof and DC/DC conversion equipment; Said DC/DC conversion equipment is made up of the two-way DC/DC conversion equipment and the unidirectional DC/DC conversion equipment of positive and negative both direction work, and said lifting frequency converter, revolution frequency converter link to each other with generating set with capacitance management and balanced component thereof, and parallel connection is provided with said lifting frequency converter with the revolution frequency converter; Said lifting frequency converter and lifting motor polyphone; Said revolution frequency converter and turning motor polyphone, said two-way DC/DC conversion equipment one end links to each other with the lifting frequency changer direct current bus, and an end links to each other with super capacitor; Said unidirectional DC/DC conversion equipment one end links to each other with the revolution frequency converter; One end links to each other with super capacitor, and said DC/DC conversion equipment is provided with power circuit, control circuit; Said power circuit links to each other with capacitance management and balanced component thereof, and said control circuit links to each other with capacitance management and balanced component summation current transformer thereof.
The 220V power circuit of DC/DC conversion equipment of the present invention links to each other with electric capacity equilibrium and Management Unit thereof.By electric capacity equilibrium and Management Unit power supply thereof.
The boost signal end of DC/DC conversion equipment of the present invention, step-down signal end, feedback end link to each other with electric capacity equilibrium and Management Unit thereof.
The control circuit of two-way DC/DC conversion equipment of the present invention links to each other with current transformer.
Two-way DC/DC conversion equipment of the present invention is provided with two-way DC/DC voltage self-checking unit, two-way DC/DC electric current self-checking unit with the lead that the lifting frequency converter links to each other.
Unidirectional DC/DC conversion equipment of the present invention is provided with unidirectional DC/DC voltage self-checking unit, unidirectional DC/DC electric current self-checking unit with the lead that the revolution frequency converter links to each other.
The present invention also is provided with energy-conservation cabinet, and described DC/DC conversion equipment, capacitance management and balanced component thereof, ultracapacitor assembly are arranged in the energy-conservation cabinet.
The present invention compares with prior art and has the following advantages and effect:
(1) power back-off function---this energy saver can reduce the load of cluster engine, thereby reach purpose of energy saving guaranteeing to reduce the main frame engine power under host performance and the satisfactory prerequisite of each item technical data.
(2) renewable energy resource reclaim function---and this device can reclaim the regenerative electric energy that the decline process is produced efficiently in the process of the grab bucket decline of excavator, these electric energy are stored in the capacitor, so that utilize once more.
(3) engine life---this system can improve the operation condition of motor in prolongation, reduces the impact to motor, and motor is operated under the light load all the time stably.
(4) energy-saving function---adopted after this device, the operation condition of motor is improved, and has improved fuel utilization ratio, and the regenerative electric energy that produces in this device ability high efficiente callback grab bucket decline process, thereby has reduced the oil consumption of motor.
The use of technical scheme of the present invention effectively stores and is used consuming recovered energy on energy consumption resistance, not only can cut the waste, but also can reduce the demand to diesel engine power.Can learn that thus storing and utilize the research of clamp excavator regenerating braking energy peculiar to vessel and using to have major and immediate significance and economic interests.Whole device is reasonable in design, and course of work intelligence is reliable.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Label declaration: generating set 1, current transformer 2, lifting frequency converter 3, lifting motor 4, DC/DC conversion equipment 5, revolution frequency converter 6, turning motor 7, capacitance management and balanced component 8 thereof, energy-conservation cabinet 9, ultracapacitor assembly 10.Air switch 11, two-way DC/DC voltage self-checking unit 12, two-way DC/DC electric current self-checking unit 13, fuse 14, main contactor 15, super capacitor output current self-checking unit 16, individual event DC/DC voltage self-checking unit 17, individual event DC/DC electric current self check 18,24V power supply 19, buck signal end 20, AC220V power supply 21, feedback end 22.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, following examples are to explanation of the present invention and the present invention is not limited to following examples.
Embodiment 1: as shown in Figure 1, present embodiment is by generating set 1, current transformer 2, lifting frequency converter 3, lifting motor 4, DC/DC conversion equipment 5, revolution frequency converter 6, turning motor 7, capacitance management and balanced component 8 thereof, energy-conservation cabinet 9, ultracapacitor assembly 10.Air switch 11, two-way DC/DC voltage self-checking unit 12, two-way DC/DC electric current self-checking unit 13, fuse 14, main contactor 15, super capacitor output current self-checking unit 16, individual event DC/DC voltage self-checking unit 17, individual event DC/DC electric current self check 18 are formed.
DC/DC conversion equipment 5 is made up of the two-way DC/DC conversion equipment and the unidirectional DC/DC conversion equipment of positive and negative both direction work; Lifting frequency converter 3, revolution frequency converter 6 link to each other with generating set 1 with capacitance management and balanced component 8 thereof; 6 parallel connections are provided with said lifting frequency converter 3 with the revolution frequency converter; Said lifting frequency converter 3 and lifting motor 4 polyphones, said revolution frequency converter 6 and turning motor 7 polyphones, said two-way DC/DC conversion equipment one end links to each other with lifting frequency converter 3 dc bus; One end links to each other with ultracapacitor assembly 10; Said unidirectional DC/DC conversion equipment one end links to each other with revolution frequency converter 6, and an end links to each other with ultracapacitor assembly 10, and said DC/DC conversion equipment 5 is provided with 24V power supply 19, buck signal end 20, AC220V power supply 21, feedback end 22; Said 24V power supply 19, buck signal end 20, AC220V power supply 21 link to each other with capacitance management and balanced component thereof, and feedback end 22 links to each other with current transformer 2.
During work, power on for energy-conservation cabinet 9 through air switch 11 after, voltage and capacitance temperature that capacitance management and equalizing system thereof 8 self check ultracapacitor assemblies 10 are whole.If voltage difference is excessive, main contactor 15 can adhesive, starts the electric capacity equalizing system, meets setting value until differential pressure, and main contactor 15 adhesives provide system's operation normal signal simultaneously and give the feedback end 22 of the control module of frequency-changing control system with two-way DC/DC.If ultracapacitor assembly 10 total voltages are low excessively; Launch equalizing system earlier voltage is risen to 320V,, start DC/DC conversion equipment 5 reduction voltage circuits and give the ultracapacitor assembly 10 chargings again with main contactor 15 adhesives; Charging current can be adjusted according to generating set 1 output current; When voltage reaches 460V, stop DC/DC device 5 buck functionalities, provide system's operation normal signal simultaneously and give the feedback end 22 of the control module of frequency-changing control system with the DC/DC conversion equipment.If above-mentioned three aspects are all no problem, the then automatic adhesive of main contactor 15 meetings, ultracapacitor assembly 10 is connected with DC/DC conversion equipment 5.In on-line working; When cluster engine 1 output current during less than 500A; Two-way DC/DC conversion equipment in the DC/DC conversion equipment 5 is to ultracapacitor assembly 10 charging, and charging current can be that the value that current transformer 2 sends to DC/DC conversion equipment 5 is adjusted with two-way DC/DC electric current self-checking unit 13 with the two-way DC/DC voltage self-checking unit 12 of two-way DC/DC device according to generating set 1 output current; When generating set 1 output current during greater than 700A; Two-way DC/DC conversion equipment is to the dc bus discharge that promotes frequency converter 3 in the DC/DC conversion equipment 5, and the discharge current size is determined with two-way DC/DC voltage self-checking unit 12 fiducial values by two-way DC/DC electric current self-checking unit 13 in current transformer 2 detected values and the two-way DC/DC device.When promoting frequency converter 3 DC bus-bar voltages, forbid that two-way DC/DC conversion equipment is to promoting the discharge of frequency converter 3 dc bus greater than 600V.When turning round frequency converter 6 DC bus-bar voltages greater than 600V, individual event DC/DC conversion equipment is to 10 chargings of ultracapacitor assembly in the DC/DC conversion equipment 5.The size of charging current is according to individual event DC/DC voltage self-checking unit 17 merchandiser item DC/DC electric current self checks 18 decisions of individual event DC/DC.In the energy saver running, the voltage of capacitance management and balanced component 8 on-line monitoring electric capacity thereof, whether electric current and temperature be normal, and be connected with DC/DC conversion equipment 5 through feedback end 22 buck signal ends 20.If problem is arranged, the effect of protection ultracapacitor assembly 10 is played in then automatic and DC/DC conversion equipment 5 disconnections of main contactor 15 meetings.Ultracapacitor assembly 10 is connected with fuse 14 with DC/DC conversion equipment 5 in addition, and ultracapacitor assembly 10 is played a protective role.
In addition, need to prove, the specific embodiment described in this manual, its zero, the shape of parts, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, characteristic and principle are done, include in the protection domain of patent of the present invention according to patent of the present invention.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (7)
1. the energy saver of a clamp excavator peculiar to vessel; It is characterized in that: form by current transformer, lifting frequency converter, lifting motor, revolution frequency converter, turning motor, super capacitor assembly, capacitance management and balanced component thereof and DC/DC conversion equipment; Said DC/DC conversion equipment is made up of the two-way DC/DC conversion equipment and the unidirectional DC/DC conversion equipment of positive and negative both direction work, and said lifting frequency converter, revolution frequency converter link to each other with generating set with capacitance management and balanced component thereof, and parallel connection is provided with said lifting frequency converter with the revolution frequency converter; Said lifting frequency converter and lifting motor polyphone; Said revolution frequency converter and turning motor polyphone, said two-way DC/DC conversion equipment one end links to each other with the lifting frequency changer direct current bus, and an end links to each other with super capacitor; Said unidirectional DC/DC conversion equipment one end links to each other with the revolution frequency converter; One end links to each other with super capacitor, and said DC/DC conversion equipment is provided with power circuit, control circuit; Said power circuit links to each other with capacitance management and balanced component thereof, and said control circuit links to each other with capacitance management and balanced component summation current transformer thereof.
2. the energy saver of clamp excavator peculiar to vessel according to claim 1, it is characterized in that: the 220V power circuit of DC/DC conversion equipment links to each other with electric capacity equilibrium and Management Unit thereof.
3. the energy saver of clamp excavator peculiar to vessel according to claim 1, it is characterized in that: the boost signal end of described DC/DC conversion equipment, step-down signal end, feedback end link to each other with electric capacity equilibrium and Management Unit thereof.
4. the energy saver of clamp excavator peculiar to vessel according to claim 1, it is characterized in that: the control circuit of two-way DC/DC conversion equipment links to each other with current transformer.
5. the energy saver of clamp excavator peculiar to vessel according to claim 1 is characterized in that: described two-way DC/DC conversion equipment with promote the lead that frequency converter links to each other and be provided with two-way DC/DC voltage self-checking unit, two-way DC/DC electric current self-checking unit.
6. the energy saver of clamp excavator peculiar to vessel according to claim 1 is characterized in that: described unidirectional DC/DC conversion equipment is provided with unidirectional DC/DC voltage self-checking unit, unidirectional DC/DC electric current self-checking unit with the lead that the revolution frequency converter links to each other.
7. the energy saver of clamp excavator peculiar to vessel according to claim 1, it is characterized in that: also be provided with energy-conservation cabinet, described DC/DC conversion equipment, capacitance management and balanced component thereof, ultracapacitor assembly are arranged in the energy-conservation cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104511074A CN102535563A (en) | 2011-12-30 | 2011-12-30 | Energy saving device of grab-bucket excavator for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104511074A CN102535563A (en) | 2011-12-30 | 2011-12-30 | Energy saving device of grab-bucket excavator for ship |
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| Publication Number | Publication Date |
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| CN102535563A true CN102535563A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104511074A Pending CN102535563A (en) | 2011-12-30 | 2011-12-30 | Energy saving device of grab-bucket excavator for ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062287A (en) * | 2014-04-11 | 2016-10-26 | 株式会社Kcm | Hybrid work machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630862A (en) * | 2009-08-05 | 2010-01-20 | 华南理工大学 | Power system of compound energy electro-vehicle |
| CN101888179A (en) * | 2010-06-21 | 2010-11-17 | 三一重机有限公司 | DC/DC control and drive circuit of hybrid power excavator |
| JP2011241653A (en) * | 2010-05-21 | 2011-12-01 | Hitachi Constr Mach Co Ltd | Hybrid construction machinery |
| US20110313608A1 (en) * | 2009-03-31 | 2011-12-22 | Shiho Izumi | Construction machine and industrial vehicle having power supply system |
| CN202544010U (en) * | 2011-12-30 | 2012-11-21 | 杭州杭重工程机械有限公司 | Energy-saving device for marine grabbing excavator |
-
2011
- 2011-12-30 CN CN2011104511074A patent/CN102535563A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110313608A1 (en) * | 2009-03-31 | 2011-12-22 | Shiho Izumi | Construction machine and industrial vehicle having power supply system |
| CN101630862A (en) * | 2009-08-05 | 2010-01-20 | 华南理工大学 | Power system of compound energy electro-vehicle |
| JP2011241653A (en) * | 2010-05-21 | 2011-12-01 | Hitachi Constr Mach Co Ltd | Hybrid construction machinery |
| CN101888179A (en) * | 2010-06-21 | 2010-11-17 | 三一重机有限公司 | DC/DC control and drive circuit of hybrid power excavator |
| CN202544010U (en) * | 2011-12-30 | 2012-11-21 | 杭州杭重工程机械有限公司 | Energy-saving device for marine grabbing excavator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062287A (en) * | 2014-04-11 | 2016-10-26 | 株式会社Kcm | Hybrid work machine |
| CN106062287B (en) * | 2014-04-11 | 2018-06-22 | 株式会社Kcm | Mixed motivity type working rig |
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Application publication date: 20120704 |