CN203319493U - Regenerated electric energy feedback power-saving system for escalators - Google Patents
Regenerated electric energy feedback power-saving system for escalators Download PDFInfo
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- CN203319493U CN203319493U CN2013203713938U CN201320371393U CN203319493U CN 203319493 U CN203319493 U CN 203319493U CN 2013203713938 U CN2013203713938 U CN 2013203713938U CN 201320371393 U CN201320371393 U CN 201320371393U CN 203319493 U CN203319493 U CN 203319493U
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- staircase
- escalator
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Abstract
The utility model discloses a regenerated electric energy feedback power-saving system for escalators, which belongs to the technical field of energy conservation of escalators. The regenerated electric energy feedback power-saving system consists of a direct current power device and induction frequency conversion devices, and has the beneficial effects that the induction frequency conversion devices of a plurality of escalators are controlled by a common direct current bus; the direct current receiving ends of a plurality of frequency conversion inverters are connected in parallel through branch lines, so that regenerated electric energy generated by potential energy of a downward escalator can be transmitted to an upward escalator and is used for driving the upward escalator to operate; energy generated by any one downward escalator in an electricity generation state is supplied to the upward escalator for practical use through the direct current bus; meanwhile, during the operation of the downward escalator, overvoltage is prevented from being generated by the direct current bus; a direct current bus overvoltage protector is connected in parallel, so that damage to the frequency conversion inverters caused by the overvoltage of the direct current bus is prevented. Therefore, the regenerated electric energy can be instantly and effectively utilized, the input power of the overall power supply of an electric system is reduced, and a maximum energy-saving effect can be achieved.
Description
Technical field
The utility model belongs to the staircase field of energy-saving technology, and particularly a kind of common bus mode that adopts feeds back to by the descending potential energy of staircase the staircase regenerative electric energy feedback power saving apparatus that up electric energy carries out comprehensive utilization of energy.
Background technology
Escalator is a kind of constantly equipment of long-time running up or down.Can produce a large amount of kinetic energy or potential energy in the process of operation downwards, these mechanical energy can be converted into regenerative electric energy by hoisting motor, in the variable frequency control escalator, regenerative electric energy usually is converted into heat energy and consumes in vain on braking resistor, wasted a large amount of electric energy, this part electric energy accounts for 10%～25% of escalator power consumption usually.Especially in market, normally up, the down escalator of a large amount of escalators of using of the occasions such as supermarket, Railway station side by side or arranged crosswise.When staircase is up, electrical motor is operated in motoring condition, needs to consume electric energy, and the people on staircase is more, and power consumption is more; When staircase is descending, electrical motor is operated in generating state, and the passenger on staircase is more, generates electricity more.Adopt the variable frequency control staircase can reach startups, operate steadily, comfortable, reduce the impact of starting current minimizing to electrical network.But generate electricity when staircase is descending and can be usually through energy consumption resistance, become heat energy and discharge for common frequency conversion escalator, can cause like this computer room temperature to raise, the electronic component aging speed is accelerated, and reduces service life.Common two staircases side by side are a upwards operation, and another is operation downwards, if the electrical usage that down escalator can be produced provides energy for up staircase, can save a large amount of electric energy, and can reduce the interior temperature of machine room, reduce the aging speed of element.
Existing staircase electricity-saving control device adopts frequency converter timing.Utilization is arranged on staircase and imports and exports the judgement of infrared photoelectric sensing gas and control the rotating speed that the output frequency of frequency converter is regulated motor, by there being manned high-speed cruising to reach the purpose of economize on electricity without manned low cruise.In the omnidistance operational process of staircase, the frequency converter output frequency is obvious 50 hertz of following power savings during without manned low cruise, and 50 hertz of power savings of frequency converter output frequency are poor when manned high-speed cruising is arranged.For passenger flow volume, in large business environment, the staircase long-play is in there being manned high-speed cruising period attached with frequency converters power savings not obvious; And its cost is very high, volume is also large, also easily pollutes power grid environment.
The utility model content
Technical problem to be solved in the utility model is for the problems referred to above, providing a kind of is electric energy by the potential energy converting and energy of down escalator and this regenerated energy is fed back to up staircase by general DC busbar, thereby reduce the demand of up staircase to horsepower input, reach the effect of saving electric energy.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is a kind of staircase regenerative electric energy feedback power saving apparatus, comprise continuous-current plant and inductive frequency conversion device, it is characterized in that described continuous-current plant is comprised of direct supply, DC bus and DC bus overvoltage protector; Described inductive frequency conversion device is comprised of infra-ray sensing controller and variable frequency inverter.
The general DC busbar that described DC bus is variable frequency inverter, direct supply, DC bus overvoltage protection device.
Described infra-ray sensing controller is arranged on staircase, up infrared pickoff, descending infrared pickoff and induction controller, consists of.
Common cathode formula Half bridge rectifier diode, DC contactor and branch line quick acting fuse have been installed on the input and output circuit straight line of described variable frequency inverter successively.
The beneficial effects of the utility model are that the inductive frequency conversion device of multiple escalator is controlled by shared DC bus, a plurality of variable frequency inverter direct current (DC) receiving end branch lines also connect, the regenerative electric energy that realization produces the potential energy of down escalator is transferred on up staircase, be used for driving the operation of up staircase, any one descending, the energy that staircase produces under generating state supplements to up staircase and uses by DC bus, just more more piece electricity effect is better for the energy of the more voluminous life of down escalator people, reach the whole process economize on electricity purpose that manned high-speed cruising is arranged and move the periods without two of manned low cruises, prevent when down escalator moves that DC bus from producing over voltage, go back and connect the DC bus overvoltage protection device, prevent DC bus over voltage damage variable frequency inverter simultaneously, so just realized that the instant of regenerative electric energy effectively utilizes, and reduced the whole power supply horsepower input of electric system, and the cost increase seldom, and can not disturb power grid quality, this power saving apparatus can expand to all escalators in building are carried out to common bus control, can reach maximum energy-saving effect.
The accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present utility model.
The circuit theory schematic diagram that Fig. 2 is the infra-ray sensing controller in the utility model.
In figure: 1. direct supply; 2. DC bus; 3. DC bus overvoltage protector, 4. infra-ray sensing controller, 5. staircase, 6. variable frequency inverter, 41. up infrared pickoffs, 42. descending infrared pickoffs, 43. induction controllers, 61. common cathode formula Half bridge rectifier diodes, 62. DC contactor, 63. branch line quick acting fuses.
The specific embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
As shown in the figure, DC bus overvoltage protector 3 is installed on the direct supply 1 of existing staircase 5, and DC bus 2 attachings are become to direct supply 1, DC bus overvoltage protector 3 and Duo Tai staircase 5 and the shared DC bus 2 of variable frequency inverter 6 thereof; Then installation infrared sensing controler 4 and variable frequency inverter 6 on staircase 5; Up infrared pickoff 41 is arranged on to up staircase mouth, descending infrared pickoff 42 is arranged on to the down escalator mouth, induction controller 43 is connected with variable frequency inverter 6; Then common cathode formula Half bridge rectifier diode 61, DC contactor 62 and branch line quick acting fuse 63 are installed successively on the input and output circuit straight line of variable frequency inverter 6; Made a kind of staircase regenerative electric energy feedback of the utility model power saving apparatus.
During use, the signal that variable frequency inverter 6 produces according to infra-ray sensing controller 4, when having the people to take, staircase 5 moves with original speed; When nobody the time, staircase 5 decelerates to low speed or out of service; When two staircases move simultaneously, direct supply 1 is powered by same DC bus 2 to the frequency converter inverter 6 of staircase first and the frequency converter inverter 6 of staircase second, two upper and lower antikinesises of staircase, when the staircase first during to descending operation, the electrical motor of staircase first is in generating state, the electric energy produced feeds back to DC bus 2 by the frequency converter inverter 6 of staircase first, gives the electrical motor power supply of up staircase second, and the needed electric energy of up staircase second is reduced; Otherwise send electric energy when descending and in like manner can be power supply when up of staircase first when staircase second is manned.
Claims (1)
1. staircase regenerative electric energy feedback power saving apparatus, comprise continuous-current plant and inductive frequency conversion device, it is characterized in that described continuous-current plant is comprised of direct supply (1), DC bus (2) and DC bus overvoltage protector (3); Described inductive frequency conversion device is comprised of infra-ray sensing controller (4) and variable frequency inverter (5);
The general DC busbar that described DC bus (2) is variable frequency inverter (6), direct supply (1), DC bus overvoltage protection device (3);
Described infra-ray sensing controller (4) is arranged on staircase, up infrared pickoff (41), descending infrared pickoff (42) and induction controller (43), consists of;
Common cathode formula Half bridge rectifier diode (61), DC contactor (62) and branch line quick acting fuse (63) have been installed on the input and output circuit straight line of described variable frequency inverter (6) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203713938U CN203319493U (en) | 2013-06-26 | 2013-06-26 | Regenerated electric energy feedback power-saving system for escalators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203713938U CN203319493U (en) | 2013-06-26 | 2013-06-26 | Regenerated electric energy feedback power-saving system for escalators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203319493U true CN203319493U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203713938U Expired - Fee Related CN203319493U (en) | 2013-06-26 | 2013-06-26 | Regenerated electric energy feedback power-saving system for escalators |
Country Status (1)
| Country | Link |
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| CN (1) | CN203319493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174017A (en) * | 2015-08-31 | 2015-12-23 | 日立电梯（广州）自动扶梯有限公司 | Escalator energy recovery device |
-
2013
- 2013-06-26 CN CN2013203713938U patent/CN203319493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174017A (en) * | 2015-08-31 | 2015-12-23 | 日立电梯（广州）自动扶梯有限公司 | Escalator energy recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140626 |
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| EXPY | Termination of patent right or utility model |