CN203114798U - Energy-saving servo hydraulic station - Google Patents

Energy-saving servo hydraulic station Download PDF

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Publication number
CN203114798U
CN203114798U CN 201320090579 CN201320090579U CN203114798U CN 203114798 U CN203114798 U CN 203114798U CN 201320090579 CN201320090579 CN 201320090579 CN 201320090579 U CN201320090579 U CN 201320090579U CN 203114798 U CN203114798 U CN 203114798U
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hydraulic station
motor
hydraulic
outlet pipe
oil
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Expired - Lifetime
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CN 201320090579
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孔祥斌
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Zhejiang Wanfeng Technology Development Co Ltd
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Zhejiang Wanfeng Technology Development Co Ltd
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Abstract

Provided is an energy-saving servo hydraulic station. A motor (12) is a servo motor or a variable frequency motor, an oil outlet pipe (15) of a hydraulic pump (13) is provided with a pressure sensor (2), pressure signals in the oil outlet pipe (15) tested by the pressure sensor (2) are transmitted to a main control unit of a hydraulic station control cabinet (14), and the main control unit of the hydraulic station control cabinet (14) controls the rotating speed of the motor (12) according to the pressure signals. The energy-saving servo hydraulic station can control the rotating speed of the motor according to pressure and flow of an oil outlet pipe of a hydraulic pump, avoids the situations that the motor drives the hydraulic pump to rotate at a certain rated rotating speed and unnecessary electricity consumption is generated, saves work cost of the hydraulic station, and meanwhile prolongs service life of the hydraulic station.

Description

节能型伺服液压站Energy-saving servo hydraulic station

技术领域： Technical field:

本实用新型涉及液压技术领域，更具体地说涉及一种节能型伺服电机驱动的液压站。The utility model relates to the technical field of hydraulic pressure, in particular to an energy-saving hydraulic station driven by a servo motor.

背景技术： Background technique:

现有液压站系统由普通的异步电机作为定量泵或变量泵的动力，在负载一定的情况下，在定量泵液压系统中，由于泵输出的流量是一定值，但负载有速度和压力要求，所以一部分流量需从溢流阀流回油箱，泵时刻都是全功率输出的，这就是我们常说的溢流损耗。另外，由于有一些负载用比例或节流阀做调速回路，所以又存在节流损耗。在变量柱塞泵液压系统中，由于有斜盘改变柱塞容积的大小，从而改变了泵输出流量的大小，所以没有溢流损耗，但是，变量泵在流量控制状态下也存在着节流损耗，所以，开环变量泵的调速回路是容积节流调速回路，另外电机也一直以额定转速带动泵旋转，机械损耗一直最大。The existing hydraulic station system uses an ordinary asynchronous motor as the power of a fixed-quantity pump or a variable-displacement pump. Under a certain load, in a fixed-rate pump hydraulic system, since the output flow of the pump is a certain value, but the load has speed and pressure requirements, Therefore, part of the flow needs to flow back to the oil tank from the overflow valve, and the pump is always output at full power, which is what we often call overflow loss. In addition, because some loads use proportional or throttle valves as speed control circuits, there are throttling losses. In the variable displacement plunger pump hydraulic system, since the swash plate changes the size of the plunger volume, thereby changing the size of the pump output flow, there is no overflow loss. However, the variable displacement pump also has throttling loss in the state of flow control. Therefore, the speed regulation circuit of the open-loop variable variable pump is a volumetric throttle speed regulation circuit, and the motor always drives the pump to rotate at the rated speed, and the mechanical loss is always the largest.

实用新型内容： Utility model content:

本实用新型的目的就是针对现有技术之不足，而提供一种节能型伺服液压站，它有压力控制和流量控制二种控制模式，它可以根据液压泵出油管的压力和流量来控制电机的转速，避免电机一直以额定转速带动液压泵旋转，产生不必要的电能损耗，节省了液压站工作成本，同时提高了液压站的使用寿命。The purpose of this utility model is to provide an energy-saving servo hydraulic station for the deficiencies of the prior art. It has two control modes: pressure control and flow control. It can control the flow rate of the motor according to the pressure and flow of the hydraulic pump outlet pipe Speed, to prevent the motor from driving the hydraulic pump to rotate at the rated speed all the time, resulting in unnecessary power loss, saving the working cost of the hydraulic station, and improving the service life of the hydraulic station.

本实用新型的技术解决措施如下：The technical solutions of the present utility model are as follows:

节能型伺服液压站，包括由油箱、电机、液压泵和液压站控制柜组成的液压站，电机带动液压泵工作，液压泵的进油口通接油，液压泵的出油管通接负载的液压油路，负载的液压油路回油至油箱，电机采用伺伏电机或变频电机，液压泵的出油管上安装有压力传感器，压力传感器测试的出油管中的压力信号输送给液压站控制柜的主控制单元，液压站控制柜的主控制单元根据该压力信号控制电机的转速。Energy-saving servo hydraulic station, including the hydraulic station composed of fuel tank, motor, hydraulic pump and hydraulic station control cabinet, the motor drives the hydraulic pump to work, the oil inlet of the hydraulic pump is connected to oil, and the oil outlet pipe of the hydraulic pump is connected to the hydraulic pressure of the load. The oil circuit, the hydraulic oil circuit of the load returns oil to the oil tank, the motor adopts a servo motor or a variable frequency motor, a pressure sensor is installed on the oil outlet pipe of the hydraulic pump, and the pressure signal in the oil outlet pipe tested by the pressure sensor is sent to the control cabinet of the hydraulic station The main control unit, the main control unit of the control cabinet of the hydraulic station controls the speed of the motor according to the pressure signal.

所述液压站控制柜的主控制单元为单片机、芯片、PLC或上位计算机。The main control unit of the control cabinet of the hydraulic station is a single-chip microcomputer, a chip, a PLC or a host computer.

本实用新型的有益效果在于：The beneficial effects of the utility model are:

它可以根据液压泵出油管的压力和流量来控制电机的转速，避免电机一直以额定转速带动液压泵旋转，产生不必要的电能损耗，节省了液压站工作成本，同时提高了液压站的使用寿命。It can control the speed of the motor according to the pressure and flow of the oil outlet pipe of the hydraulic pump, avoiding the motor to drive the hydraulic pump to rotate at the rated speed all the time, resulting in unnecessary power loss, saving the working cost of the hydraulic station, and improving the service life of the hydraulic station .

附图说明： Description of drawings:

图1为本实用新型的结构示意图Fig. 1 is the structural representation of the utility model

图中：1、液压站；11、油箱；12、电机；13、液压泵；14、液压站控制柜；15、出油管；2、压力传感器；3、负载。In the figure: 1. Hydraulic station; 11. Fuel tank; 12. Motor; 13. Hydraulic pump; 14. Control cabinet of hydraulic station; 15. Oil outlet pipe; 2. Pressure sensor; 3. Load.

具体实施方式： Detailed ways:

实施例：见图1所示，节能型伺服液压站，包括由油箱11、电机12、液压泵13和液压站控制柜14组成的液压站1，电机12带动液压泵13工作，液压泵13的进油口通接油11，液压泵13的出油管15通接负载3的液压油路，负载3的液压油路回油至油箱11，电机12采用伺伏电机或变频电机，液压泵13的出油管15上安装有压力传感器2，压力传感器2测试的出油管15中的压力信号输送给液压站控制柜14的主控制单元，液压站控制柜14的主控制单元根据该压力信号控制电机12的转速。Embodiment: As shown in Figure 1, the energy-saving servo hydraulic station includes a hydraulic station 1 composed of a fuel tank 11, a motor 12, a hydraulic pump 13 and a hydraulic station control cabinet 14. The motor 12 drives the hydraulic pump 13 to work, and the hydraulic pump 13 The oil inlet is connected to the oil 11, the oil outlet pipe 15 of the hydraulic pump 13 is connected to the hydraulic oil circuit of the load 3, and the hydraulic oil circuit of the load 3 returns oil to the oil tank 11, the motor 12 adopts a servo motor or a variable frequency motor, and the hydraulic pump 13 A pressure sensor 2 is installed on the oil outlet pipe 15, and the pressure signal in the oil outlet pipe 15 tested by the pressure sensor 2 is sent to the main control unit of the hydraulic station control cabinet 14, and the main control unit of the hydraulic station control cabinet 14 controls the motor 12 according to the pressure signal speed.

所述液压站控制柜14的主控制单元为单片机、芯片、PLC或上位计算机。The main control unit of the hydraulic station control cabinet 14 is a single-chip microcomputer, a chip, a PLC or a host computer.

工作原理：压力传感器2测试的出油管15中的压力信号输送给液压站控制柜14的主控制单元，液压站控制柜14的主控制单元采用二种控制模式即压力控制模式和流量控制模式控制电机12的转速。Working principle: The pressure signal in the oil outlet pipe 15 tested by the pressure sensor 2 is sent to the main control unit of the hydraulic station control cabinet 14, and the main control unit of the hydraulic station control cabinet 14 adopts two control modes, namely, pressure control mode and flow control mode. The rotational speed of motor 12.

压力控制模式：当压力传感器2所监测到的压力达到设定值时，液压站控制柜14的主控制单元控制电机12的转速让出油管15保持恒压。Pressure control mode: when the pressure monitored by the pressure sensor 2 reaches the set value, the main control unit of the hydraulic station control cabinet 14 controls the rotation speed of the motor 12 to keep the oil outlet pipe 15 at a constant pressure.

流量控制模式：当压力传感器2所监测到的出油管15中的压力小于设定的压力值时，液压站控制柜14的主控制单元控制电机12的转速使液压泵13的输出流量保持在恒定值。Flow control mode: when the pressure in the oil outlet pipe 15 monitored by the pressure sensor 2 is lower than the set pressure value, the main control unit of the hydraulic station control cabinet 14 controls the speed of the motor 12 to keep the output flow of the hydraulic pump 13 constant value.

这样可以避免电机12一直以额定转速带动液压泵13旋转，产生不必要的电能损耗，节省了液压站工作成本，同时提高了液压站的使用寿命。This can prevent the motor 12 from driving the hydraulic pump 13 to rotate at the rated speed all the time, resulting in unnecessary power loss, saving the working cost of the hydraulic station, and improving the service life of the hydraulic station.

Claims (2)

1.节能型伺服液压站，包括由油箱（11）、电机（12）、液压泵（13）和液压站控制柜（14）组成的液压站（1），电机（12）带动液压泵（13）工作，液压泵（13）的进油口通接油箱（11），液压泵（13）的出油管（15）通接负载（3）的液压油路，负载（3）的液压油路回油至油箱（11），其特征在于：电机（12）采用伺伏电机或变频电机，液压泵（13）的出油管（15）上安装有压力传感器（2），压力传感器（2）测试的出油管（15）中的压力信号输送给液压站控制柜（14）的主控制单元，液压站控制柜（14）的主控制单元根据该压力信号控制电机（12）的转速。 1. Energy-saving servo hydraulic station, including the hydraulic station (1) composed of fuel tank (11), motor (12), hydraulic pump (13) and hydraulic station control cabinet (14), the motor (12) drives the hydraulic pump (13 ) work, the oil inlet port of the hydraulic pump (13) is connected to the oil tank (11), the oil outlet pipe (15) of the hydraulic pump (13) is connected to the hydraulic oil circuit of the load (3), and the hydraulic oil circuit of the load (3) returns to Oil to the oil tank (11), characterized in that: the motor (12) adopts a servo motor or a variable frequency motor, and a pressure sensor (2) is installed on the oil outlet pipe (15) of the hydraulic pump (13), and the pressure sensor (2) is tested The pressure signal in the oil outlet pipe (15) is sent to the main control unit of the hydraulic station control cabinet (14), and the main control unit of the hydraulic station control cabinet (14) controls the speed of the motor (12) according to the pressure signal. 2.根据权利要求1所述的节能型伺服液压站，其特征在于：液压站控制柜（14）的主控制单元为单片机、芯片、PLC或上位计算机。  2. The energy-saving servo hydraulic station according to claim 1, characterized in that: the main control unit of the hydraulic station control cabinet (14) is a single-chip microcomputer, a chip, a PLC or a host computer. the
CN 201320090579 2013-02-27 2013-02-27 Energy-saving servo hydraulic station Expired - Lifetime CN203114798U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088860A (en) * 2014-07-04 2014-10-08 江苏永钢集团有限公司 Energy-saving control device of hydraulic station and control method
CN104668974A (en) * 2015-02-13 2015-06-03 哈尔滨工业大学 PLC (Programmable Logic Controller) hydraulic station-based pressure/flow rate closed-loop control method
CN104728214A (en) * 2015-02-13 2015-06-24 哈尔滨工业大学 Integrated hydraulic station based on PLC control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088860A (en) * 2014-07-04 2014-10-08 江苏永钢集团有限公司 Energy-saving control device of hydraulic station and control method
CN104668974A (en) * 2015-02-13 2015-06-03 哈尔滨工业大学 PLC (Programmable Logic Controller) hydraulic station-based pressure/flow rate closed-loop control method
CN104728214A (en) * 2015-02-13 2015-06-24 哈尔滨工业大学 Integrated hydraulic station based on PLC control

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Address after: 312500 Shaoxing Province, Xinchang Province Chengguan town of provincial-level high-tech Industrial Park

Patentee after: ZHEJIANG WANFENG TECHNOLOGY DEVELOPMENT Co.,Ltd.

Address before: 312500 Xinchang County, Zhejiang province Wanfeng Technology Park, Shaoxing

Patentee before: ZHEJIANG WANFENG TECHNOLOGY DEVELOPMENT Co.,Ltd.

CX01 Expiry of patent term

Granted publication date: 20130807

CX01 Expiry of patent term