CN105570211A - Controlling system for high-pressure oil source - Google Patents

Controlling system for high-pressure oil source Download PDF

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Publication number
CN105570211A
CN105570211A CN201510993523.5A CN201510993523A CN105570211A CN 105570211 A CN105570211 A CN 105570211A CN 201510993523 A CN201510993523 A CN 201510993523A CN 105570211 A CN105570211 A CN 105570211A
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China
Prior art keywords
pressure
pump
valve
oil
fuel tank
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Application number
CN201510993523.5A
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Chinese (zh)
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CN105570211B (en
Inventor
姜财
张心言
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Hualong Detector Co., Ltd., Shanghai
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SHANGHAI HUALONG TEST INSTRUMENTS CO Ltd
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Priority to CN201510993523.5A priority Critical patent/CN105570211B/en
Publication of CN105570211A publication Critical patent/CN105570211A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08Servomotor systems incorporating electrically operated control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20507Type of prime mover
    • F15B2211/20515Electric motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • F15B2211/20592Combinations of pumps for supplying high and low pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/3056Assemblies of multiple valves

Abstract

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

A kind of high pressure fuel source control system
Technical field
The present invention relates to a kind of high pressure fuel source control system, specifically refer to, is the high pressure fuel source control system of metallic material-supporting exploitation of pipe ring hydraulic dynamometer.
Background technique
Along with the fast development of national economy, no matter Ge great enterprises and institutions, universities, science and techniques of defence, the quality inspection of consumption market to product has had more and more higher requirement; The service condition of various manufacturing mechanism and testing installation also significantly promotes, and has the system pressure of increasing equipment use more than 60Mpa.For reaching the system pressure of 60Mpa, employing mode general is at present that radial plunger pump is directly suppressed or by the mode of pressurized cylinder supercharging; All select pressurized cylinder to load during control accuracy high-precision for needs, utilize the mode of servo valve control.(current servo valve pilot pressure is at about 40Mpa).Although the mode of pressurized cylinder can meet the high requirement of system pressure, but the controlled strain speed of metallic material-pipe ring hydraulic dynamometer is at 0.000025-0.00025/s, pressure range is very wide, utilize pressurized cylinder to load and coordinate the mode of servovalve to be difficult to meet test requirements document, and pressurized cylinder volume is large, takes up room more.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high pressure fuel source control system, can meet the test requirements document of the high system pressure needed for metallic material-pipe ring hydraulic pressure test, high control precision.
Solve the problem, the technical solution used in the present invention is as follows:
A kind of high pressure fuel source control system, is characterized in that:
This system comprises multiple directional control valve group, high-pressure safety valve group, low pressure pump group, high pressure servopump group, oil scavenge pump group and test mould,
Described multiple directional control valve group comprises O type high-voltage electromagnetic selector valve, D type high-voltage electromagnetic selector valve and solenoid directional control valve,
Described high-pressure safety valve group comprises one-way valve, relief valve and Manual safety valve,
Described low pressure pump group comprises the 1# low-pressure hydraulic pump by Three-phase Induction Motor Control, the filler opening of described oil hydraulic pump is by the fluid contact in oil absorption filter and fuel tank, the oil outlet of described oil hydraulic pump is connected by the P hydraulic fluid port of one-way valve with the 100MpaO type high-voltage electromagnetic selector valve in valve group, by T hydraulic fluid port oil sump tank
The bypass Bonding pressure table of the oil outlet of described one-way valve and low pressure relief valve,
Described high pressure servopump group comprises the 2# radial plunger type oil hydraulic pump by Serve Motor Control, the oil outlet end of described radial plunger type oil hydraulic pump is connected with the filler opening of one-way valve in high-pressure safety valve group, and the oil outlet of described one-way valve is by high pressure valve group and then be connected with test mould.Described test mould becomes topping up exhausting loop with one-way valve, D type high-voltage electromagnetic selector valve, solenoid directional control valve and vent control valve box-shaped,
Described oil scavenge pump group comprises 3# gear pump or the oil pump of Three-phase Induction Motor Control, the oil outlet end of described 3# liquid gear pump or oil pump is connected with fuel tank by filter, oil inlet end is connected with gap fuel tank, described gap fuel tank is connected by pipeline with test mould, and described 3# gear pump or the pipeline between oil pump and gap fuel tank are connected with for the fluid recovery ball valve of switching slot fuel tank with exhaust fuel tank.
Further, the working pressure of described O type high-voltage electromagnetic selector valve and D type high-voltage electromagnetic selector valve is 100Mpa.
High pressure fuel source control system of the present invention, its method of work is as follows:
A, closes ball valve;
B, solenoid directional control valve 4DT are energized, and start the motor of oil scavenge pump group;
C, in time being vented the liquid level in fuel tank and being placed in minimum, the lower limit of its liquid-level switch provides signal; The motor of oil scavenge pump group quits work, and O type high-voltage electromagnetic selector valve 1DT is energized, and starts the motor of low pressure pump group, and when the liquid level in band gas and oil case is placed in the highest, the upper limit of its liquid-level switch provides signal; The motor of low pressure pump group quits work, and D type high-voltage electromagnetic selector valve 3DT is energized, and starts the actuating motor of high pressure servopump group.
In the present invention, described O type high-voltage electromagnetic selector valve is for the high-pressure section in cutoff high Oil-source control system and low-pressure section, be used for protecting the hydraulic element of low-pressure section, the pressure gauge of the bypass connection of the oil outlet of one-way valve and low pressure relief valve, be used for regulating the system pressure of low-pressure section, and the hydraulic element of protection low-pressure section, low pressure pump group is used for topping up exhaust, high pressure servopump group provides pressure by radial plunger pump, oil scavenge pump group is for reclaiming gap oil and fluid,matching bit switch for the switching of control pump group, in conjunction with the Oil-source control system needed for various high-pressure solenoid valve component devices.
Compared with prior art, beneficial effect of the present invention is:
The present invention can meet the control overflow needed for metallic material-pipe ring hydraulic pressure test, and HYDRAULIC CONTROL SYSTEM is sensitive, no longer needs pressurized cylinder pilot pressure to change, saves test space.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail; the restriction of described embodiment not to invention protection domain; obviously, those of ordinary skill in the art are not needing to obtain other embodiments under the prerequisite paying creative work, and these all belong to protection scope of the present invention.
Shown in composition graphs 1, a kind of high pressure fuel source control system, is characterized in that:
This system comprises multiple directional control valve group 4, high-pressure safety valve group 16, low pressure pump group, high pressure servopump group, oil scavenge pump group and test mould 8,
Described multiple directional control valve group 4 comprises 100MpaO type high-voltage electromagnetic selector valve 7,100MpaD type high-voltage electromagnetic selector valve 11 and solenoid directional control valve 14,
Described high-pressure safety valve group comprises one-way valve, relief valve and Manual safety valve,
Described low pressure pump group comprises the 1# low-pressure hydraulic pump controlled by threephase asynchronous machine 3; the filler opening of described oil hydraulic pump is by oil absorption filter 2 and the fluid contact in fuel tank 1; the oil outlet of described oil hydraulic pump is connected with the P hydraulic fluid port of the 100MpaO type high-voltage electromagnetic selector valve in valve group by one-way valve 9; by T hydraulic fluid port oil sump tank; described 100MpaO type high-voltage electromagnetic selector valve is mainly used in high-pressure section in cutoff high Oil-source control system and low-pressure section; be used for protecting the hydraulic element of low-pressure section
The bypass Bonding pressure table 6 of the oil outlet of described one-way valve and low pressure relief valve 5, be used for regulating the system pressure of low-pressure section, and the hydraulic element of protection low-pressure section,
Described high pressure servopump group comprises the 2# radial plunger type oil hydraulic pump by Serve Motor Control, the oil outlet end of described radial plunger type oil hydraulic pump is connected with the filler opening of one-way valve in high-pressure safety valve group, and the oil outlet of described one-way valve is connected by high pressure valve group and then with test mould 8.Described test mould and one-way valve 9,100MPaD type high-voltage electromagnetic selector valve 11, solenoid directional control valve 14 and be vented fuel tank 15 and form topping up exhausting loop,
Described oil scavenge pump group comprises 3# gear pump or the oil pump of Three-phase Induction Motor Control, the oil outlet end of described 3# liquid gear pump or oil pump is connected with fuel tank by filter, oil inlet end is connected with gap fuel tank 12, described gap fuel tank is connected by pipeline with test mould, and described 3# gear pump or the pipeline between oil pump and gap fuel tank are connected with for the fluid recovery ball valve 13 of switching slot fuel tank with exhaust fuel tank.
The working pressure of described O type high-voltage electromagnetic selector valve 7 and D type high-voltage electromagnetic selector valve 11 is 100Mpa.
High pressure fuel source control system of the present invention, its method of work is as follows:
A, closes ball valve 13;
B, solenoid directional control valve 144DT are energized, and start the motor of oil scavenge pump group;
C, in time being vented the liquid level in fuel tank and being placed in minimum, the lower limit of its liquid-level switch provides signal; The motor of oil scavenge pump group quits work, and O type high-voltage electromagnetic selector valve 71DT is energized, and starts the motor of low pressure pump group, and when the liquid level in band gas and oil case is placed in the highest, the upper limit of its liquid-level switch provides signal; The motor of low pressure pump group quits work, and D type high-voltage electromagnetic selector valve 113DT is energized, and starts the actuating motor of high pressure servopump group.
When utilizing high pressure fuel source control system of the present invention to test, be first vented fuel tank 15 initialization, oil scavenge pump group starts, and 4DT is charged, and the fluid in exhaust fuel tank is evacuated to large tank until when liquid-level switch arrives minimum point by oil scavenge pump group, and oil scavenge pump group is closed.Then started by low pressure pump group, 1DT is charged, and low-pressure fluid enters test mould and gets rid of from exhaust fuel tank; In time being vented oil tank liquid level and reaching liquid-level switch peak, low pressure pump group is closed, and high pressure servopump group starts; 3DT is charged, and Oil-source control system is undertaken testing until off-test by software design patterns speed; Off-test high pressure servopump group is closed, and after 3DT dead electricity 10s, oil scavenge pump group starts, and 4DT is charged, and the fluid in exhaust fuel tank is evacuated to large tank until when liquid-level switch arrives minimum point by oil scavenge pump group, and oil scavenge pump group is closed.
In addition, when liquid level in the fuel tank of gap arrives liquid-level switch peak, testing apparatus or software provide prompting, then open ball valve 13, and manually boot oil scavenge pump group and fluid is evacuated to large tank until when liquid-level switch arrives minimum point, oil scavenge pump group is closed.

Claims (3)

1. a high pressure fuel source control system, is characterized in that:
This system comprises multiple directional control valve group (4), high-pressure safety valve group (16), low pressure pump group, high pressure servopump group, oil scavenge pump group and test mould (8),
Described multiple directional control valve group (4) comprises 100MpaO type high-voltage electromagnetic selector valve (7), 100MpaD type high-voltage electromagnetic selector valve (11) and solenoid directional control valve (14),
Described high-pressure safety valve group comprises one-way valve, relief valve and Manual safety valve,
Described low pressure pump group comprises the 1# low-pressure hydraulic pump controlled by threephase asynchronous machine (3), the filler opening of described oil hydraulic pump is by oil absorption filter (2) and the fluid contact in fuel tank (1), the oil outlet of described oil hydraulic pump is connected with the P hydraulic fluid port of the O type high-voltage electromagnetic selector valve in valve group by one-way valve (9), by T hydraulic fluid port oil sump tank
The bypass Bonding pressure table (6) of the oil outlet of described one-way valve and low pressure relief valve (5),
Described high pressure servopump group comprises the 2# radial plunger type oil hydraulic pump by Serve Motor Control, the oil outlet end of described radial plunger type oil hydraulic pump is connected with the filler opening of one-way valve in high-pressure safety valve group, and the oil outlet of described one-way valve is connected by high pressure valve group and then with test mould (8).Described test mould and one-way valve (9), 100MPaD type high-voltage electromagnetic selector valve (11), solenoid directional control valve (14) and be vented fuel tank (15) and form topping up exhausting loop,
Described oil scavenge pump group comprises 3# gear pump or the oil pump of Three-phase Induction Motor Control, the oil outlet end of described 3# gear pump or oil pump is connected with fuel tank by filter, oil inlet end is connected with gap fuel tank (12), described gap fuel tank is connected by pipeline with test mould, and described 3# gear pump or the pipeline between oil pump and gap fuel tank are connected with for the fluid recovery ball valve of switching slot fuel tank with exhaust fuel tank
(13)。
2. high pressure fuel source control system according to claim 1, is characterized in that:
The working pressure of described O type high-voltage electromagnetic selector valve (7) and D type high-voltage electromagnetic selector valve (11) is 100Mpa.
3. high pressure fuel source control system according to claim 1, its method of work is as follows:
A, closes ball valve (13);
B, solenoid directional control valve (14) 4DT are energized, and start the motor of oil scavenge pump group;
C, in time being vented the liquid level in fuel tank and being placed in minimum, the lower limit of its liquid-level switch provides signal; The motor of oil scavenge pump group quits work, and O type high-voltage electromagnetic selector valve (7) 1DT is energized, and starts the motor of low pressure pump group, and when the liquid level in band gas and oil case is placed in the highest, the upper limit of its liquid-level switch provides signal; The motor of low pressure pump group quits work, and D type high-voltage electromagnetic selector valve (11) 3DT is energized, and starts the actuating motor of high pressure servopump group.
CN201510993523.5A 2015-12-25 2015-12-25 A kind of high pressure fuel source control system Active CN105570211B (en)

Priority Applications (1)

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CN105570211B CN105570211B (en) 2017-06-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695880A1 (en) * 1994-07-22 1996-02-07 Appareillages et Matériels de Servitudes A.M.S. Installation for distributing hydraulic fluid for testing or controlling hydraulic circuits
CN101177930A (en) * 2007-05-28 2008-05-14 中交第二公路工程局有限公司 High-low pump combination hydraulic system
CN201069424Y (en) * 2007-08-01 2008-06-04 合肥通用机械研究院 350MPa ultra-high pressure fatigue test system
CN201083213Y (en) * 2007-08-01 2008-07-09 爱环吴世(苏州)环保有限公司 Super-high-pressure hydraulic pump station
CN102121485A (en) * 2011-01-27 2011-07-13 济南易久自动化技术有限公司 Controllable centralized oil supply hydraulic system with multiple press power for multiple hydraulic press machines
CN103591083A (en) * 2012-08-17 2014-02-19 上海立新液压有限公司 Hydraulic test stand for oil cylinders

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695880A1 (en) * 1994-07-22 1996-02-07 Appareillages et Matériels de Servitudes A.M.S. Installation for distributing hydraulic fluid for testing or controlling hydraulic circuits
CN101177930A (en) * 2007-05-28 2008-05-14 中交第二公路工程局有限公司 High-low pump combination hydraulic system
CN201069424Y (en) * 2007-08-01 2008-06-04 合肥通用机械研究院 350MPa ultra-high pressure fatigue test system
CN201083213Y (en) * 2007-08-01 2008-07-09 爱环吴世(苏州)环保有限公司 Super-high-pressure hydraulic pump station
CN102121485A (en) * 2011-01-27 2011-07-13 济南易久自动化技术有限公司 Controllable centralized oil supply hydraulic system with multiple press power for multiple hydraulic press machines
CN103591083A (en) * 2012-08-17 2014-02-19 上海立新液压有限公司 Hydraulic test stand for oil cylinders

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Address after: No. 389, Sichuan Honglu, Pudong New Area, Shanghai

Patentee after: Hualong Detector Co., Ltd., Shanghai

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Patentee before: Shanghai Hualong Test Instruments Co., Ltd.

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