Pressure-maintaining and pressure-relieving control system for large-tonnage cylinder of steel-tube finishing straightening machine

A straightening machine large and control system technology, applied in the direction of fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., can solve the problems of working machinery vibration, affecting work quality, equipment damage, etc., and achieve liquid flow The effect of small resistance, strong anti-pollution ability and small leakage

Active Publication Date: 2012-06-27
TIANSHUI METALFORMING MACHINE TOOL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the peak pressure is much smaller than the failure pressure of the pipeline, due to the rapid increase of the pressure, it will cause the working machinery to vibrate, produce a lot of noise, affect the quality of work, and even cause malfunction, resulting in equipment damage

Method used

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  • Pressure-maintaining and pressure-relieving control system for large-tonnage cylinder of steel-tube finishing straightening machine
  • Pressure-maintaining and pressure-relieving control system for large-tonnage cylinder of steel-tube finishing straightening machine

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, a pressure maintaining and pressure relief control system for large-tonnage oil cylinders of a steel pipe finishing and straightening machine consists of a two-way cartridge valve and a control valve connected to the main oil cylinder 5, the first fast oil cylinder 6 and the second fast oil cylinder 7 , a direct-acting relief valve and a pressure gauge, wherein the two-way cartridge valve includes a first two-way cartridge valve 1b, a second two-way cartridge valve 2b and a third two-way cartridge valve 3b, and the control valve includes The first control valve 1a, the second control valve 2a and the third control valve 3a, the pressure gauge includes a first pressure gauge 13 and a second pressure gauge 14; the first two-way cartridge valve 1b is connected to the first control valve 1a, And communicate with the main oil cyl...

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Abstract

The invention relates to a pressure-maintaining and pressure-relieving control system for a large-tonnage cylinder of a steel-tube finishing straightening machine. The pressure-maintaining and pressure-relieving control system comprises two-way plug valves, control valves, a direct-acting relief valve and pressure gages which are connected with a main cylinder, a first quick cylinder and a second quick cylinder, wherein the pressure relief of the main cylinder is controlled by a first two-way plug valve and a first control valve; the pressure relief of the first and second quick cylinders is controlled by a second two-way plug valve and a second control valve; and the pressure relief of a system oil way is controlled by a third two-way plug valve and a third control valve. In the pressure-maintaining and pressure-relieving control system, the two-way plug valves are controlled to be switched on / off by the power-on / off of the control valves, so as to realize the pressure maintenance and the pressure relief of the system. The effective pressure maintenance and the impact-free pressure relief of the system are realized by the pressure-maintaining and pressure-relieving control system provided by the invention which has the advantages of convenience in debugging, high response speed, high oiling capability, small liquid flow resistance, compact structure, reliable property and the like, and is suitable for various steel-tube finishing straightening machines.

Description

technical field [0001] The invention belongs to a hydraulic control system, and relates to a pressure maintaining and pressure releasing control system for a large-tonnage oil cylinder of a steel pipe finishing and straightening machine. Background technique [0002] Steel pipe finishing and straightening machine is the necessary special equipment for oil and gas conveying straight seam steel pipe production line. axial direction, and make it rotate to the vertical direction, and then it is sent into the finishing mold section by section, and under the strong pressure of the finishing mold, the steel pipe material flows section by section to improve the ellipticity and make it meet the relevant standards or use requirements; Second, it is also used to straighten long round tubes with poor straightness, so as to improve the straightness of long round tubes and make them meet relevant standards or use requirements. [0003] The mechanical parts of the steel pipe finishing and...

Claims

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Application Information

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IPC IPC(8): F15B21/00B21D3/00
Inventor 刘民祥张怀德王飞义杨辅国王忠云
Owner TIANSHUI METALFORMING MACHINE TOOL GROUP
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