CN100451336C - Low idling energy consumption hydraulic power source - Google Patents

Low idling energy consumption hydraulic power source Download PDF

Info

Publication number
CN100451336C
CN100451336C CN 200610012474 CN200610012474A CN100451336C CN 100451336 C CN100451336 C CN 100451336C CN 200610012474 CN200610012474 CN 200610012474 CN 200610012474 A CN200610012474 A CN 200610012474A CN 100451336 C CN100451336 C CN 100451336C
Authority
CN
China
Prior art keywords
hydraulic
pump
motor
speed
controller
Prior art date
Application number
CN 200610012474
Other languages
Chinese (zh)
Other versions
CN1821574A (en
Inventor
龙 权
敏 李
秦太龙
Original Assignee
太原理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 太原理工大学 filed Critical 太原理工大学
Priority to CN 200610012474 priority Critical patent/CN100451336C/en
Publication of CN1821574A publication Critical patent/CN1821574A/en
Application granted granted Critical
Publication of CN100451336C publication Critical patent/CN100451336C/en

Links

Abstract

一种低空转能耗液压动力源属于流体传动及控制技术领域,是为降低液压系统处于非工作周期和部分负载工况能量消耗而设计的一种供油装置。 One kind of low energy transfer fluid transmission belonging to a hydraulic power source and control technology, a hydraulic system is to reduce the supply means are in a non-work period and part load conditions the energy consumption and design. 本发明由液压泵(1)、电动机(2)、电机转速控制器(3)、蓄能器(4)、电磁阀(5)、压力传感器(6)、位移传感器(7)、控制器(8)、第一液压管路(9)、第二液压管路(10)、执行器控制阀(11)、(12)、(13)等部件组成。 The present invention consists of a hydraulic pump (1), the motor (2), the motor speed controller (3), an accumulator (4), solenoid valve (5), a pressure sensor (6), a displacement sensor (7), the controller ( 8), a first hydraulic line (9), a second hydraulic line (10), control valve actuator (11), (12), (13) and other components. 本发明的特征是液压泵(1)为恒压式的变量泵,其上增设了可检测泵排量的位移传感器(7),通过改变泵的转速可使该动力源具有恒压、恒流和恒功率控制的复合功能,并通过降低液压泵在非工作周期和部分负载工况的转速降低液压系统的能耗。 Feature of the present invention is a hydraulic pump (1) is a constant pressure pump is variable, which the addition of the displacement sensor may detect the displacement of the pump (7), by changing the rotational speed of the pump allows the power source having a constant voltage and current complex function and constant power control, and reduce power consumption of the rotation speed of the hydraulic system and the non-working portion of the cycle by reducing the load condition of the hydraulic pump.

Description

低空转能耗液压动力源 Low idle power consumption of the hydraulic power source

一、 技术领域: First, the technical field:

本发明低空转能耗液压动力源属于流体传动及控制技术领域,是为液压执行器提供一定压力和流量的动力源装置。 Low idle power consumption of the present invention belongs to a fluid source of hydraulic power transmission and control technology, to provide a certain pressure and flow for the hydraulic actuator power source device.

二、 背景技术: Second, the technical background:

液压动力源是流体传动及控制系统为执行器提供动力的单元,它将机械能转换为具有一定压力和流量的液压能,用于驱动液压缸和液压马达。 A hydraulic power source is a fluid power transmission and control system provides for the execution unit, it is converted to mechanical energy with a certain hydraulic pressure and flow energy for driving the hydraulic cylinders and hydraulic motors. 传统的液压动力源由转速固定不变的电动机驱动定量或变量液泵组成。 Conventional hydraulic power source is fixed speed drive motor or variable pump quantitative composition. 为了与负载匹配、降低能耗,国际上发展了多种形式的变量液压泵。 In order to match the load, reduce energy consumption, the international development of various forms of variable displacement hydraulic pump. 常用的变量泵有恒压、 恒流和恒功率三种形式。 Common variable pump has constant voltage, constant current and constant power three forms. 恒压式变量泵的工作特点是当系统工作压力低于泵的设定压力时,泵输出相应转速下的最大流量,而当系统工作压力达到泵的压力设定值时,泵输出的流量自动适应负载要求,降低与流量有关的能耗。 Constant pressure variable pump working characteristics of the system when the operating pressure is below the set pressure of the pump, the maximum pump output flow at a corresponding speed, when the system pressure reaches the set value of the pump pressure, pump output flow rate of the automatic adapt to load requirements, and reduce traffic-related energy consumption. 恒流式变量泵输出与设定值相一致的流量,而压力则与系统的负载相适应,降低与压力相关的能量损失。 Variable constant pump output coincides with the set value of the flow rate, the pressure is adapted to the load of the system, reducing the energy losses associated with pressure. 恒功率变量泵限制泵的输出功率与设定值相一致,使泵输出流量和压力的乘积保持不变。 Constant Power Pump output power limit value of the set coincides with the pump, the pump output flow and pressure of the product remains unchanged. 这三种泵同用定量泵组成的动力源相比,虽然在一定程度上都降低了系统的能耗,但试验表明,当系统处于非工作周期时, 如泵处于低压大流量的泄荷工况,泵处于高压小流量工况等,电机仍以额定转速运转,要产生较大的能量损失。 The three pump compared with the power source with a metering pump composed, although to some extent, have reduced the energy consumption of the system, but tests showed that when the system is non-operational periods, such as low pressure pump is unloading large flow of work conditions, a high-pressure pump is a small flow rate and the like, still rated motor speed operation, to a greater energy loss.

为了降低非工作周期,因电机仍以额定转速运转造成的能量损失, 一种新的趋势是通过改变液压泵的转速来控制泵的流量和压力,已出现的控制方式有用交流异步电动机,通过改变转速控制定量液压泵输出的流量和压力,欧洲 In order to reduce non-working cycle, the energy loss due to motor rated speed operation is still due, a new trend is to control the flow and pressure of the pump by changing the speed of the hydraulic pump, control methods have emerged useful AC induction motor, by changing the speed control constant pump output flow and pressure, Europe

专利、公开号EP 0752304 Al;用可变转速的异步电动机,结合比例压力和流量阀与定量泵组成动力源控制供给系统的流量和压力,欧洲专利,公开号EP0 509724 Al,他们的不足是动态响应较慢;在德国专利DE 3919823 Al中,用伺服电机控制定量液压泵的输出流量和压力,存在的问题是成本高,影响其推广和应用;德国也有人研究用可变转速的交流异步电动机与电子比例控制的变排量液压泵组合控制泵的输出流量和压力,存在的不足仍然是成本高,且组成 Patent Publication No. EP 0752304 Al; asynchronous motor with variable speed, combined with the proportional pressure valve and flow metering pump consisting of a power supply source control system flow and pressure, European Patent Publication No. EP0 509724 Al, their inadequate dynamic slow response; in German Patent DE 3919823 Al, the servomotor control output of the constant pump flow rate and pressure, there is a problem of high costs, which affect the promotion and application; Germany was for AC induction motor with a variable speed a variable displacement hydraulic pump in combination with an electronic control proportional control pump output flow and pressure, there is the high cost is still insufficient, and the composition

的系统也非常复杂。 The system is also very complicated. 本发明低空转能耗液压动力源目的在于,提供一种新的变速电机与变量液压泵组合方式作为液压动力源,即具有低的成本,好的动态响应,又能满足各种液压系统对动力源的功能要求和降低非工作周期的能量消耗。 Low energy turn a hydraulic power source present invention aims to provide a novel variable speed motor and variable displacement hydraulic pump as a hydraulic power source combinations, i.e., low cost, good dynamic response, but also to meet the power various hydraulic systems source and functional requirements to reduce the energy consumption of the non-working period.

三、发明内容 III. SUMMARY OF THE INVENTION

本发明的目的旨在降低现有液压动力源将机械能转换为液压能过程中的能量损失,实现节能。 The present invention aims to reduce the conventional hydraulic power source converts mechanical energy into hydraulic energy during the energy loss and achieving energy saving. 液压动力源是为流体传动及控制系统提供动力的单元, 它将机械能转换为具有一定压力和流量的液压能,用来驱动液压缸或液压马达。 A hydraulic power source to provide power for the control system and fluid transmission unit, it is converted to mechanical energy with constant pressure and flow of hydraulic power for driving a hydraulic cylinder or a hydraulic motor.

本发明一种低空转能耗液压动力源,它包含有液压泵1、电动机2、蓄能器4、电磁阀5、其特征是液压泵1为恒压式的变量液压泵,并增设了电机转速控制器3、压力传感器6、位移传感器7和控制器8;压力传感器6安装在连接泵出口的第一液压管路9中,检测系统的实际压力,并将其转换为电信号输入到控制器8中;位移传感器7安装在液压泵1中,检测泵变量机构的摆角, 并将其值转换为电信号输入到控制器8中;蓄能器通过第一液压管路9、第二液压管路10连接到液压泵1的出口,在第一液压管路9和第二液压管路10之间装有电磁阀5控制蓄能器的通断;控制器8根据执行器控制阀11、 12、 13 的流量要求,给出控制电机转速的指令信号W到电机转速控制器3中,并用接收到的压力传感器6和位移传感器7的信号,对转速设定值进行修正;转速控制器3控制电机的转速和功率。 Present invention provides a low idle power consumption hydraulic power source, comprising a hydraulic pump, a motor 2, an accumulator 4, a solenoid valve 5, characterized in that the constant pressure of the hydraulic pump 1 is a variable displacement hydraulic pump, and the addition of the motor speed controller 3, the pressure sensor 6, the displacement sensor 7 and the controller 8; a pressure sensor 6 is mounted in the actual pressure of the first hydraulic line connected to an outlet of the pump 9, the detection system into an electric signal and inputted to the control in 8; displacement sensor 7 is attached to the hydraulic pump 1, the pump is detected swing angle variable mechanism, and the value is converted to an electric signal inputted into the controller 8; accumulator via a first hydraulic line 9, the second hydraulic line 10 is connected to the outlet of the hydraulic pump 1, a solenoid valve 5 controls the accumulator-off between the first hydraulic line 9 and a second hydraulic line 10; a controller 8 according to the actuator control valve 11 , flow requirements 12, 13 is given control of the motor speed command signal W to the motor speed controller 3, and received by the pressure sensor 6 and 7 of the displacement sensor signal, the rotational speed setting value is corrected; speed controller 3 controls the motor speed and power. 执行器控制阀ll、 12、 13用于控制执行器的运动方向和速度,系统中执行器可以是l个、2个、或者是多个。 Actuator control valve ll, 12, 13 for controlling the motion direction and speed of the actuator, the actuator system may be l, 2, or more.

上述的低空转能耗液压动力源,其特征是液压泵1是机械控制人工调整的恒压式变量泵、或者是用电信号自动调整的电液比例恒压变量泵。 The above low idle power consumption hydraulic power source, characterized in that the hydraulic pump 1 is mechanically controlled variable manual adjustments constant pressure pump, an electrical signal is automatically adjusted or electro-hydraulic proportional constant pressure variable pump.

上述的低空转能耗液压动力源,其特征是电动机2是交流异步电机、交流伺服电机、或者是关磁阻电机。 The above low idle power consumption hydraulic power source, characterized in that the electric motor 2 is an AC induction motors, AC servo motor, or a reluctance motor off.

上述的低空转能耗液压动力源,其特征是电机转速控制器3是可连续控制电机转速的变频器、控制电机只有几个固定转速级别的控制器,或者是软启动装置。 The above low idle power consumption hydraulic power source, wherein the motor speed can be continuously controller 3 is to control the drive motor speed, the motor control only a few levels of fixed speed controllers, or a soft start device. 本发明低空转能耗液压动力源主要优点体现在,I 、当液压系统处于低压、泄荷等非工作周期时,通过降低液压泵的转速,将极大地减小因液压泵以额定转速旋转产生的能量损失。 Low energy turn a hydraulic power source of the present invention is embodied in the major advantage, I, when the hydraulic system at a low pressure, unloading and other non-working cycle, by reducing the rotational speed of the hydraulic pump, the hydraulic pump will be greatly reduced due to the rotation at the rated speed energy loss. II、在液压系统的工作过程中,通过提高泵的 II, during the operation of the hydraulic system, by increasing the pump

转速,可加大系统的供油流量,减小所选用泵的体积。 Speed, can increase the oil flow system and reduce the volume of the selected pump. ni、由于电机转速控制器本身就具有控制电机处于恒功率工作状态的功能,从而也使本动力源叠加了恒功率控制的特征。 Ni, since the motor speed controller itself has a function of controlling the motor operation state is constant power, thus making the power source is superimposed wherein the constant power control. iv、通过改变泵的转速,使泵具有了压力和流量的复合控制功能,可实现多执行器的流量匹配控制。 IV, by varying the speed of the pump, the pump having a composite function of the pressure and flow control can be achieved to match the flow control multiple actuators. v、通过检测泵变量机构的摆角和输出压力,配合电机的转速,可实现动力源的效率最优控制。 v, and the swing angle by detecting the output pressure of the pump variable mechanism, with the motor speed, the efficiency of the power source can realize optimal control. 本发明可代替现有的液压动力源,广泛应用于液压工业领域,实现节能。 The present invention may replace conventional hydraulic power source, it is widely used in the hydraulic industry, achieving energy saving. 四、附图说明 IV BRIEF DESCRIPTION

图i低空转能耗液压动力源。 FIG low idle power consumption i hydraulic power source. 其中 among them

l一液压泵2—电动机3—电机转速控制器4一蓄能器5— 电磁阀6—压力传感器7—位移传感器8—控制器9一第一液压管路IO—第二液压管路11、 12、 13—执行器控制阀 a hydraulic pump motor l 2- 3- 4 a motor speed controller accumulator pressure sensor 5- 6- 7- solenoid valve displacement sensor controller 9 8- IO- a first hydraulic line 11 a second hydraulic line, 12, 13 actuator control valve

下面结合附图对本发明的原理和结构作进一步详细说明。 BRIEF principles and structures of the present invention are described in further detail below in conjunction.

本发明低空转能耗液压动力源是由液压泵l、电动机2、电机转速控制器3、蓄能器4、开关式的电磁阀5、压力传感器6、检测泵排量(摆角)的位移传感器7、控制器8,第一液压管路9、第二液压管路IO,执行器控制阀ll、 12、 13等部件组成。 A hydraulic power source low idle power consumption by the hydraulic pump of the present invention is L, the motor 2, the motor speed controller 3, the accumulator 4, switching the solenoid valve 5, the pressure sensor 6, detects the displacement of the pump (swing angle) displacement sensor 7, controller 8, a first hydraulic line 9, the IO second hydraulic line, a control valve actuator ll, 12, 13 and other components. 其中,液压泵1采用机械式恒压式变量泵、或者电子比例控制的恒压式变量泵,其特点是当系统压力低于该泵的设定压力时,泵输出最大排量所对应的流量。 Wherein the hydraulic pump 1 by mechanical constant pressure variable pump or a constant pressure proportional control of the electronic variable pump, characterized in that when the system pressure is lower than the set pressure of the pump, the pump output flow rate corresponding to the maximum displacement . 而当系统压力达到其设定值后,泵的输出流量自动适应负载要求。 When the system pressure reaches the set value, the pump delivery rate is automatically adapted to the load requirements. 电动机2是驱动液压泵的原动机,将电能转变为机械能。 2 is an electric motor prime mover driving the hydraulic pump, electrical energy into mechanical energy. 电机转速控制器3的作用是控制电机转动的速度,同时也能起到限制电机输出扭矩和功率的目的。 Effect motor speed controller 3 is to control the rotational speed of the motor, but also can serve the purpose of limiting motor torque and power output. 蓄能器4的作用是储存一定压力的液压油,补偿动态过程中液压泵供油不足所需的流量。 4 is the effect of the accumulator storing a hydraulic oil pressure, hydraulic oil compensating dynamic process flow required insufficient. 电磁阀5控制蓄能器的工作状态是断开还是接通。 Solenoid valve 5 controls the operating state of the accumulator is ON or OFF. 压力传感器6检测和监测液压泵出口处的实际压力值,并将其转换为电信号提供给控制器8。 6 detects the actual pressure value at the outlet of the hydraulic pump and monitoring the pressure sensor, and converts it into an electric signal to the controller 8. 位移传感器7用来检测液压泵变量机构的摆角,并将这一信号转化为电信号输入到控制器8。 7 displacement sensor for detecting the swing angle of the hydraulic pump of variable displacement mechanism, and converts the signal into an electric signal is input to the controller 8. 控制器8的作用是根据系统的工作状态、压力传感器6和位移传感器7提供的信息,控制电动机的转动速度,并限制电机的最大 8 is based on the role of the controller operating state of the system, and the information from the pressure sensor 6 provides the displacement sensor 7, the control rotational speed of the motor, and the motor to limit the maximum

输出功率。 Output Power. 执行器控制阀ll、 12、 13用于控制执行机构的运动方向及速度。 Actuator control valve ll, 12, 13 to the direction of movement and speed control actuator.

该动力源的工作过程是:首先根据负载的运动速度,当为多执行器工况时,根据各执行器的速度和,按泵的最大排量确定电动机的转速,并将这一设定值提供给电机转速控制器3,当系统压力低于液压泵的设定值,通过检测到的系统压力值和液压泵的排量,根据泵的泄漏特性,对泵的转速进行修正。 The operation of this power source is: First, according to the movement speed of the load, when the multi-actuator operating conditions, and, by determining the maximum displacement of the pump motor speed based on the speed of each actuator, and this set value 3 to the motor speed controller, when the system pressure is below the set value of the hydraulic pump, according to the characteristics of the pump leakage, pump speed is corrected by the hydraulic system pressure value and the detected displacement. 当系统处于最高压力时,通过同时改变泵的排量和转速来适应负载所需流量。 When the system is at maximum pressure, to adapt to varying the pump displacement by simultaneously load and speed the required flow. 当泵的输出功率超过电动机的功率设定值后,转速控制器就会自动降低电动机的 When the output of the pump power exceeds the set value of the motor power, the controller automatically reduces the speed of the motor

转速,限制液压泵的输出功率。 Speed, limiting the hydraulic pump power output. 当所有执行器都不工作时,控制泵的转速为某一最低值,系统处于低能耗工作状态。 When all of the actuators are not working, pump speed control to a certain minimum value, the system is in low power operating state. 这时如果某个执行器突然启动,为了满足动态特性的要求,可以通过控制电磁阀5使蓄能器4打开,补充流量。 Then if a sudden start of the actuator, in order to meet the requirements of the dynamic characteristics, the accumulator can be made by controlling the electromagnetic valve 54 is opened, supplemental traffic.

五、具体实施方式 V. DETAILED DESCRIPTION

实施方式l: Embodiment l:

在图1所示的实施方案中,液压泵1采用机械控制的先导结构恒压变量 In the embodiment shown in FIG. 1, the hydraulic pump 1 employs a pilot structure constant pressure variable mechanical control

泵,电动机2采用交流异步电动机,电机转速控制器3选用矢量控制方式的变频器,蓄能器4选用皮囊式的结构,电磁阀5选用10通径的2位二通电磁阀, 压力传感器6选测量范围为0—35MPa,并集成有前置放大器。 Pumps, motors, AC induction motor 2, the controller 3 selected motor speed vector control inverter, the accumulator bladder-like structure 4 selected, the solenoid valve 10 selected path 5 of two-way solenoid valves, the pressure sensor 6 selected measurement range is 0-35MPa, and integrated with a preamplifier. 位移传感器7 选用差动变压器原理,控制器8由单片计算器构成。 Selection of the displacement sensor 7 differential transformer principle, the controller 8 is constituted by a single piece calculator.

实施方式2: Embodiment 2:

本实施方式与实施方式1的区别是将方式1中机械控制的恒压变量泵改为电子比例控制的恒压变量泵,电机转速控制器3选用软启动器,其余部分一致。 Difference between the present embodiment and Embodiment Embodiment 1 Embodiment 1 is mechanically controlled variable constant voltage constant pressure to the pump electro-proportional control variable pump, the motor speed controller 3 selected soft-start, the remainder of the same.

实施方式3: Embodiment 3:

本实施方式与实施方式1的区别是将方式1中采用的交流异步电动机改为交流伺服电机,其余部分一致。 Difference between the present embodiment and the embodiment 1 is the AC induction motor using embodiment 1 was changed to AC servo motor, the rest of the same.

Claims (4)

1、 一种低空转能耗液压动力源,它包含有液压泵(1)、电动机(2)、 蓄能器(4)、电磁阀(5)、其特征是液压泵(1)为恒压式的变量液压泵,并增设了电机转速控制器(3)、压力传感器(6)、位移传感器(7)和控制器(8); 压力传感器(6)安装在连接泵出口的第一液压管路(9)中,检测系统的实际压力,并将其转换为电信号输入到控制器(8)中;位移传感器(7)安装在液压泵(1)中,检测泵变量机构的摆角,并将其值转换为电信号输入到控制器(8)中;蓄能器通过第一液压管路(9)、第二液压管路(10)连接到液压泵(O的出口,在第一液压管路(9)和第二液压管路(10)之间装有电磁阀(5) 控制蓄能器的通断;控制器(8)根据执行器控制阀(11)、 (12)、 (13)的流量要求,给出控制电机转速的指令信号W到电机转速控制器(3)中,并用接收到的压力传感器(6)和位移传 1. A hydraulic power source low idle power consumption, which contains a hydraulic pump (1), the motor (2), an accumulator (4), solenoid valve (5), characterized in that the hydraulic pump (1) is a constant-voltage type variable displacement hydraulic pump, and the addition of the motor speed controller (3), a pressure sensor (6), a displacement sensor (7) and a controller (8); a pressure sensor (6) installed in the first hydraulic pipe connecting the pump outlet passage (9), the actual pressure detection system, and converted into electrical signals inputted to the controller (8); and a displacement sensor (7) mounted on the hydraulic pump (1), the pump is detected swing angle variable mechanism, value into an electrical signal and inputted to the controller (8); a first hydraulic line (9), a second hydraulic line (10) connected to the hydraulic pump (O outlet of the accumulator through the first a solenoid valve (5) between a hydraulic line (9) and a second hydraulic line (10) on-off control of the accumulator; and a controller (8) the actuator control valve (11), (12), (13) flow requirements, given motor speed control command signal W to the motor speed controller (3) and received by the pressure sensor (6) and a displacement transmission 器(7)的信号,对转速设定值进行修正; 转速控制器(3)控制电机的转速和功率;执行器控制阀(11)、 (12)、 (13) 用于控制执行器的运动方向和速度,系统中执行器可以是l个、2个、或者是多个。 Signal (7), the speed setpoint to be corrected; speed controller (3) controls the speed and power of the motor; actuator control valve (11), (12), (13) for motion control of the actuators direction and speed, the actuator system may be l, 2, or more.
2、 根据权利要求1所述的低空转能耗液压动力源,其特征是液压泵(1) 是机械控制人工调整的恒压式变量泵、或者是用电信号自动调整的电液比例恒压变量泵。 2 electro-hydraulic proportional constant pressure, low idle power consumption of the hydraulic power source according to claim 1, characterized in that the hydraulic pump (1) is mechanically controlled variable manual adjustments constant pressure pump, or an electrical signal is automatically adjusted as.
3、 根据权利要求1所述的低空转能耗液压动力源,其特征是电动机(2) 是交流异步电机、交流伺服电机、或者是开关磁阻电机。 3, low idle power consumption of the hydraulic power source according to claim 1, characterized in that the electric motor (2) is an AC induction motors, AC servo motor or a switched reluctance motor.
4、 根据权利要求1所述的低空转能耗液压动力源,其特征是电机转速控制器(3)是可连续控制电机转速的变频器、控制电机只有几个固定转速级别的控制器,或者是软启动装置。 4, according to Claim low idle power consumption of the hydraulic power supply of claim 1, wherein the motor speed controller (3) is a continuous control of the drive motor speed, the motor control only a few levels of fixed speed controllers, or soft start device.
CN 200610012474 2006-03-07 2006-03-07 Low idling energy consumption hydraulic power source CN100451336C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200610012474 CN100451336C (en) 2006-03-07 2006-03-07 Low idling energy consumption hydraulic power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200610012474 CN100451336C (en) 2006-03-07 2006-03-07 Low idling energy consumption hydraulic power source

Publications (2)

Publication Number Publication Date
CN1821574A CN1821574A (en) 2006-08-23
CN100451336C true CN100451336C (en) 2009-01-14

Family

ID=36923109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200610012474 CN100451336C (en) 2006-03-07 2006-03-07 Low idling energy consumption hydraulic power source

Country Status (1)

Country Link
CN (1) CN100451336C (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8540493B2 (en) 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
US7686589B2 (en) 2004-08-26 2010-03-30 Pentair Water Pool And Spa, Inc. Pumping system with power optimization
US7845913B2 (en) 2004-08-26 2010-12-07 Pentair Water Pool And Spa, Inc. Flow control
US8043070B2 (en) 2004-08-26 2011-10-25 Pentair Water Pool And Spa, Inc. Speed control
US8602745B2 (en) 2004-08-26 2013-12-10 Pentair Water Pool And Spa, Inc. Anti-entrapment and anti-dead head function
GB0614940D0 (en) 2006-07-27 2006-09-06 Arternis Intelligent Power Ltd Vehicle traction and stability control system employing control of fluid quanta
EP3418570A1 (en) 2008-10-06 2018-12-26 Pentair Water Pool and Spa, Inc. Method of operating a safety vacuum release system
JP5604615B2 (en) * 2009-03-23 2014-10-08 佐藤 寛 Energy saving control device and equipment or injection molding machine equipped with this energy saving control device
US9556874B2 (en) * 2009-06-09 2017-01-31 Pentair Flow Technologies, Llc Method of controlling a pump and motor
US8564233B2 (en) 2009-06-09 2013-10-22 Sta-Rite Industries, Llc Safety system and method for pump and motor
DE102010033346B3 (en) * 2010-08-04 2012-02-02 Bucyrus Hex Gmbh A method of starting an electric motor in a hydraulically operated working machine
AU2011338297B2 (en) 2010-12-08 2016-10-13 Pentair Water Pool And Spa, Inc. Discharge vacuum relief valve for safety vacuum release system
US9885360B2 (en) 2012-10-25 2018-02-06 Pentair Flow Technologies, Llc Battery backup sump pump systems and methods
US9590537B2 (en) 2013-03-15 2017-03-07 Pentair Flow Technologies, Llc Method of controlling a pump and motor
CN104514777A (en) * 2013-09-29 2015-04-15 佛山市恒力泰机械有限公司 Energy-saving servo control system of ceramic brick pressing machine
CN105804964B (en) * 2016-03-15 2018-05-29 北京星达科技发展有限公司 High-pressure constant flow pump and closed-loop control method
CN106499614B (en) * 2016-10-28 2017-11-07 合肥工业大学 A variable speed motor with constant power hydraulic pump energy matching system and control method
CN108071620A (en) * 2016-11-16 2018-05-25 丹佛斯动力系统(浙江)有限公司 Electric control valve, hydraulic pump and hydraulic pump system with switchable control function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071730A (en) 1991-10-10 1993-05-05 北京市西城区新开通用试验厂 Numerically controlled energy-saving oil extractor
CN1079026A (en) 1992-05-21 1993-12-01 北京市西城区新开通用试验厂 Digit control hydraulic meter high molecular pump
CN1237233A (en) 1996-09-13 1999-12-01 维克斯公司 Electrohydraulic system and apparatus with bidirectional electric-motor hydraulic-pump unit
CN1306606A (en) 1999-05-28 2001-08-01 日立建机株式会社 Pump capacity control device and valve device
CN1322668A (en) 2001-06-14 2001-11-21 浙江大学 Energy-storing power economizer for varying frequency driven hydraulic elevator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071730A (en) 1991-10-10 1993-05-05 北京市西城区新开通用试验厂 Numerically controlled energy-saving oil extractor
CN1079026A (en) 1992-05-21 1993-12-01 北京市西城区新开通用试验厂 Digit control hydraulic meter high molecular pump
CN1237233A (en) 1996-09-13 1999-12-01 维克斯公司 Electrohydraulic system and apparatus with bidirectional electric-motor hydraulic-pump unit
CN1306606A (en) 1999-05-28 2001-08-01 日立建机株式会社 Pump capacity control device and valve device
CN1322668A (en) 2001-06-14 2001-11-21 浙江大学 Energy-storing power economizer for varying frequency driven hydraulic elevator

Also Published As

Publication number Publication date
CN1821574A (en) 2006-08-23

Similar Documents

Publication Publication Date Title
CN100441785C (en) Hydraulic control device for working machine
CN1256521C (en) Frequency converter volume variable speed closed hydraulic control systems
CN102046887A (en) Controller of hybrid construction machine
CN1206147C (en) Hydraulic lift energy-saving control system with hydraulic transformer
EP2121280B1 (en) Electro-hydraulic control arrangement
CN100424361C (en) Closed electrohydraulic controlling system
KR101421362B1 (en) Hybrid construction equipment control system
KR20100137421A (en) Control apparatus of hybrid-construction machine
DE112009000767B4 (en) Control for a hybrid construction machine
CN101033733A (en) Large and middle wind turbine digital intelligent hydraulic brake system
JP4582981B2 (en) Hydraulic power supply system
CN101818508A (en) Power control system and method of excavator
CN100414103C (en) Pump unit
CN100575716C (en) Redundant electrohydraulic servo-controlling system
CN1987124A (en) Energy saving hydraulic lifting system of variable hydraulic counterweight
CN103249950B (en) Hybrid hydraulic systems for industrial processes
CN101900153B (en) Energy-efficient hydraulic power supply driven by permanent magnet servo motor
DE112009000707B4 (en) Controller for hybrid construction equipment
CN102229328B (en) Vehicle mechanical energy-saving hydraulic system with multi-pump confluence
CN103174688B (en) Hydraulic energy-saving system
CN101865190B (en) Position and flow double-close-loop direct-drive volume control electro-hydraulic servo system
CN101723271B (en) Crane hoist hydraulic control system
CN101603527B (en) Emulsion pump testing system
CN201792744U (en) Single-pump dual-motor driving engineering vehicle and hydraulic system and control device thereof
CN1325756C (en) Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CF01