Hydraulic drive system and gate valve

A driving system and oil pressure technology, applied in sliding valves, fluid pressure actuating devices, valve devices, etc., can solve the problem of high power consumption of servo motors, and achieve the effect of improving operational reliability and reducing power consumption

Active Publication Date: 2022-01-14
ULVAC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In addition, although the influence of the cogging torque on the normally closed operation can be reduced by using a servo motor, in this case, there is a problem that it is not advisable because the power consumption of the servo motor is large.

Method used

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  • Hydraulic drive system and gate valve
  • Hydraulic drive system and gate valve
  • Hydraulic drive system and gate valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0525] Next, examples of the present invention will be described.

[0526] Here, performance analysis will be described as a specific example of the hydraulic drive system of the present invention.

[0527]

[0528] First, the type of the motor 705m, the structure of the counter-rotation countermeasure required for this, the electric power required at this time, and the life of the combined structure are analyzed.

[0529] Here, as the motor 705m, a brushed DC motor, a coreless brushless DC motor, and a stepping motor are analyzed. Also, analyze the need for cogging torque countermeasures for these motors.

[0530] As the structure of the counter-rotation countermeasure, the electromagnetic valve, the field clutch 705d, and the field brake 705b for preventing the reverse rotation of the drive system at the time of oil pressure reverse flow are analyzed. In addition, it is analyzed whether the regenerative current processing unit 705c is necessary.

[0531] In addition, th...

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PUM

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Abstract

The invention discloses an oil pressure driving system and a gate valve. The hydraulic drive system is a hydraulic drive system that expands and contracts so that an object can be pressed in a vacuum atmosphere chamber. The hydraulic drive system has a vacuum actuator and a hydraulic drive unit. The hydraulic driving unit includes a hydraulic pressure generating unit, a driving unit for driving the hydraulic pressure generating unit, and a power supply for supplying power to the driving unit. The telescoping link can be driven by hydraulic pressure supplied from the hydraulic drive unit to the fixed unit. The drive unit is provided with a counter-reverse part for coping with a reverse state of the motor when the telescopic rod is moved in a direction away from the object by the urging force of the hydraulic urging member.

Description

technical field [0001] The present invention relates to an oil pressure drive system and a gate valve, in particular to a technique suitable for use in an oil pressure drive system and a pendulum gate valve using the oil pressure drive system. Pressure driven and rebound vacuum actuator. Background technique [0002] A telescopic actuator that presses an object in a vacuum atmosphere chamber is provided in a vacuum apparatus or the like. As such a telescopic actuator, there is known a configuration in which a drive unit is arranged outside the chamber in a vacuum atmosphere to drive the telescopic unit in the chamber from the viewpoint of preventing contamination in the chamber. [0003] For example, the telescopic actuator has an electromagnetic drive type, a pneumatic drive type, or a hydraulic drive type. [0004] On the other hand, the inventors of the present invention filed a patent application (Patent Document 1) related to a pendulum gate valve having a hydraulical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/02F16K31/122F04B37/14
CPCF16K3/0254F16K31/122F04B37/14F15B13/042F15B13/044F16K51/02F16K31/12F16K3/30H02K7/102H02K29/00H02K26/00F15B2211/89
Inventor 德平真之介井上英晃柴山浩司和出拓也古濑晴邦猿渡治郎铎木干也和田慎一照井敬晶迫田圣也石田智也
Owner ULVAC INC
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