CN1569600A - Energy-saving elevator hydraulic system employing closed oil way - Google Patents
Energy-saving elevator hydraulic system employing closed oil way Download PDFInfo
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- CN1569600A CN1569600A CNA2004100182129A CN200410018212A CN1569600A CN 1569600 A CN1569600 A CN 1569600A CN A2004100182129 A CNA2004100182129 A CN A2004100182129A CN 200410018212 A CN200410018212 A CN 200410018212A CN 1569600 A CN1569600 A CN 1569600A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention discloses an energy saving elevator hydraulic system with closed oilway. It includes: vector frequency conversion electric machinery, bidirectional hydraulic pump, the first shuttle valve, the second shuttle valve, overflow valve, bidirectional hydraulic lock, piston hydraulic cylinder, hydraulic accumulator and elevator car system. It balances a majority of weight of the elevator car system through piston ram type hydraulic cylinder and the connected hydraulic accumulator, it absorbs energy when the elevator downwards, and releases energy when upwards, it can decrease the assembly power greatly. The vector frequency conversion volume control and closed oilway can decrease the energy consumption and hydraulic oil.
Description
Affiliated technical field
The present invention relates to the control system of elevator, relate in particular to a kind of energy-conserving elevator hydraulic efficiency pressure system that adopts closed oil circuit.
Background technology
Hydraulic elevator is because the machine room flexible arrangement is convenient, building hoistway structure does not stress, and utilized that the hydrostatic drive load-carrying capacity is big, advantage such as infinite speed variation and motion are steady, it is compared with the towed elevator of same size, low price is debugged easy to maintenance.Thereby in recent decades, hydraulic elevator has obtained developing rapidly in various countries.
Because general hydraulic elevator is not with counterweight, therefore rely on the power system acting during ascending for elevator fully, that works relies on counterweight that a part of power is provided unlike towed elevator, the efficient of adding hydraulic power system is not high, so the installed power of hydraulic elevator generally is 2～3 times of towed elevator.And hydraulic elevator is descending by the car self gravitation, and generally consumption systems energy not so the energy consumption contrast does not have installed power high like that, but still reaches more than 1.5 times of towed elevator.Therefore, reducing installed power and energy consumption is to improve hydraulic elevator market competitiveness key.
About the patent of hydraulic elevator energy-conserving control technology and achievement in research mainly in the following aspects:
1.. the energy-saving scheme of band mechanical counterweight mechanism: mainly contain piston cylinder band counterweight and plunger case band counterweight dual mode, can reduce installed power and energy consumption significantly, but increased the complexity of elevator machine structure.
2.. adopt the energy-saving scheme of energy storage: mainly be that U.S. Pat 4761953, US4638888 and Japanese Patent JA08165076, JA08217346 have introduced the energy-conservation hydraulic elevator control system of employing energy storage respectively, these systems all adopt the two-way ram cylinder, be applicable to and draw the traction-type structure, top of building is stressed.
3.. the volumetric speed control technology that adopts variable-frequency motor to drive: traditional valve control hydraulic elevator, because the energy consumption of throttling governing is big, efficient is low, and adopts frequency conversion volumetric speed control technology, no throttling and excess flow loss greatly reduce the energy consumption of system.
Summary of the invention
The object of the present invention is to provide a kind of energy-conserving elevator hydraulic efficiency pressure system that adopts closed oil circuit, employing has the piston formula hydraulic actuating cylinder of special construction, the cavity of resorption of piston cylinder wherein is connected with hydraulic accumulator by pipeline, and the oil pressure that acts on the plunger case piston of being with piston can play balance lift car system overwhelming majority weight; Hydraulic control system adopts closed oil circuit simultaneously, and mode adopts vector converter volume mode, can reduce the energy consumption of system and the consumption of minimizing hydraulic oil greatly.
For achieving the above object, technical scheme of the present invention is as follows:
The bidirectional hydraulic lock, piston formula hydraulic actuating cylinder, hydraulic accumulator, the lift car system that the present invention includes vector converter motor, bidirectional hydraulic pump, first shuttle valve, second shuttle valve, by pass valve, form by first hydraulic control one-way valve and second hydraulic control one-way valve; Wherein:
1) piston formula hydraulic actuating cylinder is made up of the plunger case of plunger case, non-movable piston and band piston, the plunger case outside face and the plunger case bearing fit of band piston, and inside face and non-movable piston bearing fit, plunger case and non-movable piston are fixed on the elevator hoistways bottom, have oil duct in the non-movable piston, an end hydraulic fluid port of non-movable piston communicates with the work cavity volume of the plunger case of band piston; Movable pulley is fixed on the top of the plunger case of band piston, and elevator wire rope is connected with the elevator cage system by movable pulley; Hydraulic accumulator is connected with the common work cavity volume of forming of piston base of the plunger case and the plunger case of non-movable piston and band piston;
2) oil inlet of first hydraulic control one-way valve in the termination bidirectional hydraulic lock of an end of an end of the motor-driven bidirectional hydraulic pump of vector converter, first shuttle valve, second shuttle valve, the oil outlet of first hydraulic control one-way valve is connected with the common work cavity volume of forming of the plunger case of band piston with plunger case; Second hydraulic control one-way valve in another termination bidirectional hydraulic lock of the other end of the other end of bidirectional hydraulic pump, first shuttle valve, second shuttle valve (oil inlet, the oil outlet of second hydraulic control one-way valve is connected with the other end hydraulic fluid port of non-movable piston; One end of by pass valve is connected with second shuttle valve, the other end connected tank of by pass valve, and an end of by pass valve is connected with the middle hydraulic fluid port of second shuttle valve, the other end connected tank of by pass valve, the middle hydraulic fluid port connected tank of first shuttle valve;
3) control oil channel of first hydraulic control one-way valve is connected with the oil inlet of second hydraulic control one-way valve; The control oil channel of second hydraulic control one-way valve is connected with the oil inlet of first hydraulic control one-way valve.
The present invention compares with background technology, and the useful effect that has is:
Because the special construction of piston formula hydraulic actuating cylinder, when balance lift car overwhelming majority weight, not needing increases counterweight in addition, has eliminated shortcomings such as the stressed and tunnel dimension in caused increase of use mechanical counterweight and road.And when lift car was descending, the hydraulic accumulator that is connected with piston formula hydraulic actuating cylinder absorbed energy; During ascending for elevator, be stored in the required energy of energy supplement ascending for elevator in the hydraulic accumulator.Can reduce hydraulic elevator ground installed power significantly.Piston formula hydraulic actuating cylinder constitutes vector converter volumetric speed control closed system by bidirectional hydraulic lock and the motor-driven bidirectional hydraulic pump of vector converter simultaneously, has utilized the advantage that frequency conversion volumetric speed control energy-saving efficiency is high and closed oil circuit is saved hydraulic oil.Therefore the present invention can significantly reduce the installed power and the energy consumption of hydraulic elevator system, also can save the consumption of hydraulic oil simultaneously.The present invention adopts the stop of all right lift car of bidirectional hydraulic lock more steadily rapid in closed oil circuit, has increased traveling comfort and the safety taken.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a structural principle scheme drawing of the present invention.
Among the figure: 1, vector converter motor, 2, bidirectional hydraulic pump 3, shuttle valve, 4, shuttle valve, 5, by pass valve, 6-1, first hydraulic control one-way valve, 6-2, second hydraulic control one-way valve, 7, piston formula hydraulic ram, 8, hydraulic accumulator, 9, the lift car system, 10, piston cylinder, 11, non-movable piston, 12, the plunger case of band piston, 20, fuel tank, 13,14,15,16,17,18,19,21,22,23,24,25,26,27 is connecting line.
The specific embodiment
As shown in drawings, the bidirectional hydraulic lock, piston formula hydraulic actuating cylinder 7, hydraulic accumulator 8, the lift car system 9 that the present invention includes vector converter motor 1, bidirectional hydraulic pump 2, first shuttle valve 3, second shuttle valve 4, by pass valve 5, form by the first hydraulic control one-way valve 6-1 and the second hydraulic control one-way valve 6-2; Wherein:
1) piston formula hydraulic actuating cylinder 7 is made up of the plunger case 12 of plunger case 10, non-movable piston 11 and band piston, plunger case 12 outside faces and plunger case 10 bearing fits of band piston, and inside face and non-movable piston 11 bearing fits, plunger case 10 and non-movable piston 11 are fixed on the elevator hoistways bottom, have oil duct in the non-movable piston 11.One end hydraulic fluid port of non-movable piston 11 communicates with the work cavity volume of the plunger case 12 of band piston; Movable pulley 13 is fixed on the top of the plunger case 12 of band piston, and elevator wire rope is connected with elevator cage system 9 by movable pulley; Hydraulic accumulator 8 is connected with the common work cavity volume of forming of piston base of the plunger case 10 and the plunger case 12 of non-movable piston 11 and band piston;
2) end of the end of an end of the bidirectional hydraulic pump 2 that drives of vector converter motor 1 by pipeline 18, first shuttle valve 3 by pipeline 17, second shuttle valve 4 connects the oil inlet of the first hydraulic control one-way valve 6-1 in the bidirectional hydraulic lock by pipeline 16, and the plunger case 12 of the oil outlet of the first hydraulic control one-way valve 6-1 by pipeline 13 and plunger case 10 and the band piston work cavity volumes of composition jointly is connected; The other end of the other end of the other end of bidirectional hydraulic pump 2 by pipeline 21, first shuttle valve 3 by pipeline 22, second shuttle valve 4 connects the oil inlet of the second hydraulic control one-way valve 6-2 by pipeline 23, and the oil outlet of the second hydraulic control one-way valve 6-2 is connected with the other end hydraulic fluid port of non-movable piston 11 by pipeline 26; One end of by pass valve 5 is connected with the middle hydraulic fluid port of second shuttle valve 4 by pipeline 15, and the other end of by pass valve 5 passes through pipeline 19 connected tanks 20 by the middle hydraulic fluid port of pipeline 24 connected tanks 20, the first shuttle valves 3;
3) control oil channel of the first hydraulic control one-way valve 6-1 is connected with the oil inlet of the second hydraulic control one-way valve 6-2 by pipeline 14; The control oil channel of the second hydraulic control one-way valve 6-2 is connected with the oil inlet of the first hydraulic control one-way valve 6-2 by pipeline 25.
Two operating modes of following separatory piezoelectricity ladder car uplink and downlink illustrate the principle of work of this system.
Up operating mode:
When vector converter motor 1 drive the bidirectional hydraulic pump by pipeline 21 and bidirectional hydraulic lock an end 6-2 and
Oil duct in the non-movable piston 11 of pipeline 26 and piston formula hydraulic actuating cylinder is to plunger case 12 fuel feeding of band piston, pressure raises, this moment, the first hydraulic control one-way valve 6-1 of bidirectional hydraulic lock opened the oil suction that the fluid in piston cylinder 10 epicoeles flows back to bidirectional hydraulic pump 2 by first hydraulic control one-way valve 6-1 in pipeline 13 and the bidirectional hydraulic lock and pipeline 18.Hydraulic accumulator 8 releases energy simultaneously, by the cavity of resorption fuel feeding of pipeline 27 to the piston cylinder 10 of piston formula hydraulic actuating cylinder 7.This moment the lift car system uplink.In running process of elevator, vector converter motor 1 can be according to needed flow regulating rotating speed of motor in the system, and then regulates the rotating speed of bidirectional hydraulic pump 2.
Descending operating mode:
When elevator is descending, turning to when up of vector converter motor 1 is opposite, bidirectional hydraulic pump 2 by pipeline 18 and bidirectional hydraulic lock 6-1 and pipeline 13 to the epicoele fuel feeding of the piston cylinder 10 of piston formula hydraulic actuating cylinder 7, pressure raises, the second hydraulic control one-way valve 6-2 of the bidirectional hydraulic lock that links to each other with control oil channel 15 is opened, fluid in the plunger case 12 of band piston is by pipeline 26, the oil suction that second hydraulic control one-way valve 6-2 of bidirectional hydraulic lock and pipeline 21 flow to the bidirectional hydraulic pump, because the deadweight effect of car system is after the second hydraulic control one-way valve 6-2 of bidirectional hydraulic lock opens, oil pressure in the plunger case 12 of band piston constantly raises, direct drive bidirectional hydraulic pump rotates, and this moment can be by the vector converter motor to the electrical network feedback electric energy.Fluid in the piston cylinder 10 of piston formula hydraulic actuating cylinder 7 flows back to hydraulic accumulator 8 by pipeline 27 simultaneously, and this moment, hydraulic accumulator absorbed energy.
In the hydraulic efficiency pressure system of this invention, the effect of first shuttle valve 3 is to make no matter closed oil circuit is that elevator rises or decline all can replenish fluid to system, prevent that the oil suction of bidirectional hydraulic pump from inhaling empty.When the effect of second shuttle valve 4 and by pass valve 5 was rising of common guarantee elevator or decline, the oil pressure in the loop all was no more than the maximum pressure of system, plays the safety guard-safeguard effect.
In the hydraulic efficiency pressure system of this invention, hydraulic accumulator 8 has following two main effects to have.1. hydraulic accumulator 8 provides energy, recuperated energy when elevator is descending when ascending for elevator.2. hydraulic accumulator 8 can play the effect of counterweight, and its counterweight value is that unloaded car weight adds 1/2 variable load weight.The unloaded quality of supposing the lift car system is m
1, the variable load quality of lift car is m
2The counterweight value that hydraulic accumulator provides is F
1, the running velocity of lift car system be v then:
The theoretical installed power W that the drive motor of elevator hydraulic system is required
1For:
W
1＝(m
1+m
2)·g·v (1)
The power W that provides that hydraulic accumulator provides
2:
W
2＝F
1·v (2)
F wherein
1=m
1G+1/2m
2g
So installed power W of actual required motor
3For:
W
3＝W1-W2＝1/2·m
2·g·v (3)
Thereby can reduce installed power significantly, adopt frequency conversion drive can cut down the consumption of energy greatly again simultaneously.
Claims (1)
1, adopts the energy-conserving elevator hydraulic efficiency pressure system of closed oil circuit, the bidirectional hydraulic lock, piston formula hydraulic actuating cylinder (7), hydraulic accumulator (8), the lift car system (9) that it is characterized in that comprising vector converter motor (1), bidirectional hydraulic pump (2), first shuttle valve (3), second shuttle valve (4), by pass valve (5), form by first hydraulic control one-way valve (6-1) and second hydraulic control one-way valve (6-2); Wherein:
1) piston formula hydraulic actuating cylinder (7) is made up of the plunger case (12) of plunger case (10), non-movable piston (11) and band piston, plunger case (12) outside face and plunger case (10) bearing fit of band piston, and inside face and non-movable piston (11) bearing fit, plunger case (10) and non-movable piston (11) are fixed on the elevator hoistways bottom, and non-movable piston has oil duct in (11); One end hydraulic fluid port of non-movable piston (11) communicates with the work cavity volume of the plunger case (12) of band piston; Movable pulley (13) is fixed on the top of the plunger case (12) of band piston, and elevator wire rope is connected with elevator cage system (9) by movable pulley; Hydraulic accumulator (8) is connected with the common work cavity volume of forming of piston base of the plunger case (10) and the plunger case (12) of non-movable piston (11) and band piston;
2) oil inlet of first hydraulic control one-way valve (6-1) in the termination bidirectional hydraulic lock of an end of an end of the bidirectional hydraulic pump (2) of vector converter motor (1) driving, first shuttle valve (3), second shuttle valve (4), the oil outlet of first hydraulic control one-way valve (6-1) is connected with the common work cavity volume of forming of plunger case (12) of plunger case (10) and band piston; The oil inlet of second hydraulic control one-way valve (6-2) in another termination bidirectional hydraulic lock of the other end of the other end of bidirectional hydraulic pump (2), first shuttle valve (3), second shuttle valve (4), the oil outlet of second hydraulic control one-way valve (6-2) is connected with the other end hydraulic fluid port of non-movable piston (11); One end of by pass valve (5) is connected with second shuttle valve (4), the other end connected tank (20) of by pass valve (5), one end of by pass valve (5) is connected with the middle hydraulic fluid port of second shuttle valve (4), the other end connected tank (20) of by pass valve (5), the middle hydraulic fluid port connected tank (20) of first shuttle valve (3);
3) control oil channel of first hydraulic control one-way valve (6-1) is connected with the oil inlet of second hydraulic control one-way valve (6-2); The control oil channel of second hydraulic control one-way valve (6-2) is connected with the oil inlet of first hydraulic control one-way valve (6-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100182129A CN1270959C (en) | 2004-05-08 | 2004-05-08 | Energy-saving elevator hydraulic system employing closed oil way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100182129A CN1270959C (en) | 2004-05-08 | 2004-05-08 | Energy-saving elevator hydraulic system employing closed oil way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1569600A true CN1569600A (en) | 2005-01-26 |
| CN1270959C CN1270959C (en) | 2006-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100182129A Expired - Fee Related CN1270959C (en) | 2004-05-08 | 2004-05-08 | Energy-saving elevator hydraulic system employing closed oil way |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907108A (en) * | 2010-07-29 | 2010-12-08 | 南通航海机械集团有限公司 | Miniature power unit |
| CN102452590A (en) * | 2010-10-20 | 2012-05-16 | 沈传良 | Hydraulic elevator energy storage device |
| ITPA20120010A1 (en) * | 2012-05-03 | 2013-11-04 | Giuseppe Barone | IMPROVED ACTUATOR DEVICE IMPROVED FOR LIFTING AND / OR TRANSPORT AND EQUIPMENT INCLUDING THE DEVICE. |
| CN108100801A (en) * | 2018-01-04 | 2018-06-01 | 桐城市靖伦塑料有限公司 | Hydraulic elevator safety device |
| CN111689341A (en) * | 2019-03-15 | 2020-09-22 | 上海煊凝机电制造有限公司 | Energy-saving hydraulic oil cylinder lifting system |
| CN115388064A (en) * | 2022-09-19 | 2022-11-25 | 宁波德玛智能机械有限公司 | Bidirectional hydraulic press oil cylinder |
-
2004
- 2004-05-08 CN CNB2004100182129A patent/CN1270959C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907108A (en) * | 2010-07-29 | 2010-12-08 | 南通航海机械集团有限公司 | Miniature power unit |
| CN102452590A (en) * | 2010-10-20 | 2012-05-16 | 沈传良 | Hydraulic elevator energy storage device |
| ITPA20120010A1 (en) * | 2012-05-03 | 2013-11-04 | Giuseppe Barone | IMPROVED ACTUATOR DEVICE IMPROVED FOR LIFTING AND / OR TRANSPORT AND EQUIPMENT INCLUDING THE DEVICE. |
| WO2013164797A1 (en) * | 2012-05-03 | 2013-11-07 | Giuseppe Barone | Balanced actuating device for lifting and/or transport apparatus and apparatus comprising the device |
| CN108100801A (en) * | 2018-01-04 | 2018-06-01 | 桐城市靖伦塑料有限公司 | Hydraulic elevator safety device |
| CN111689341A (en) * | 2019-03-15 | 2020-09-22 | 上海煊凝机电制造有限公司 | Energy-saving hydraulic oil cylinder lifting system |
| CN115388064A (en) * | 2022-09-19 | 2022-11-25 | 宁波德玛智能机械有限公司 | Bidirectional hydraulic press oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270959C (en) | 2006-08-23 |
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Granted publication date: 20060823 Termination date: 20130508 |