A high pressure oil source control system
A control system and high-pressure oil technology, which is applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve the problems of large volume of booster cylinders, occupying a lot of space, and difficulty in meeting test requirements, etc., to achieve Save experimental space and control sensitive effects
Active Publication Date: 2017-06-23
SHANGHAI HUALONG TEST INSTR
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Problems solved by technology
Although the pressurized cylinder method can meet the high pressure requirements of the system, the control strain rate of the metal material-pipe ring hydraulic testing machine is 0.000025-0.00025 / s, and the pressure variation range is very wide. The method of using the pressurized cylinder to load and cooperate with the servo valve It is difficult to meet the test requirements, and the volume of the pressurized cylinder is large and takes up a lot of space
Method used
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The embodiments are not intended to limit the scope of protection of the invention. Obviously, those skilled in the art can obtain other embodiments without having to pay creative work. Belong to the protection scope of the present invention.
[0023] combine figure 1 As shown, a high-pressure oil source control system is characterized in that:
[0024] The system includes multi-way reversing valve group 4, high pressure safety valve group 16, low pressure pump group, high pressure servo pump group, oil suction pump group and test mold 8,
[0025] The multi-way reversing valve group 4 includes a 100Mpa O-type high-pressure electromagnetic reversing valve 7, a 100Mpa D-type high-pressure electromagnetic reversing valve 11 and an electromagnetic reversing valve 14,
[0026] The high-pressure safety valve group includes a check valve I, a relief ...
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The invention relates to a controlling system for a high-pressure oil source. The controlling system can meet the test requirements of a metal material-pipe ring hydraulic test for high system pressure and high controlling accuracy and comprises a low-pressure pump group, a high-pressure servo pump group, an oil suction pump group, a multi-way directional valve group (4), a high-pressure safety valve group (16) and a test model (8), wherein the low-pressure pump group is used for liquid filling and air exhausting of a sealing cavity of the test model; the high-pressure servo pump group provides pressure by driving a radial plunger pump through a servo motor; the oil suction pump group is used for recovering gap oil and matching with a liquid level switch to be used for controlling switching of the pump groups; and an oil source controlling system required by equipment is formed by combining various high-pressure electromagnetic valves. According to the controlling system, the hydraulic system is flexible in controlling without needing to acquire the pressure required by the system by virtue of a pressurized cylinder, so that the test space is saved; and with direct control of the high-pressure system, the controlling accuracy is improved.
Description
technical field [0001] The invention relates to a high-pressure oil source control system, specifically, a high-pressure oil source control system developed for a metal material-pipe ring hydraulic testing machine. Background technique [0002] With the rapid development of the national economy, regardless of major enterprises and institutions, colleges, national defense technology, consumer markets have higher and higher requirements for product quality inspection; the use of various production equipment and test equipment The conditions have also been greatly improved, and more and more equipment uses a system pressure exceeding 60Mpa. In order to achieve a system pressure of 60Mpa, the current common method is to directly press the radial piston pump or pressurize with the booster cylinder; when high-precision control accuracy is required, the booster cylinder is used to load, and the servo valve is used to control the pressure. Way. (Currently the servo valve control p...
Claims
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IPC IPC(8): F15B11/00F15B13/02F15B21/08
CPCF15B11/00F15B13/02F15B21/08F15B2211/20515F15B2211/20592F15B2211/3056
Inventor 姜财张心言
Owner SHANGHAI HUALONG TEST INSTR