CN102900730A - Test experiment system for revolving speed and pressure property of hydraulic transformer - Google Patents
Test experiment system for revolving speed and pressure property of hydraulic transformer Download PDFInfo
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- CN102900730A CN102900730A CN2012104385964A CN201210438596A CN102900730A CN 102900730 A CN102900730 A CN 102900730A CN 2012104385964 A CN2012104385964 A CN 2012104385964A CN 201210438596 A CN201210438596 A CN 201210438596A CN 102900730 A CN102900730 A CN 102900730A
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Abstract
The invention relates to a test experiment system, and particularly relates to a test experiment system for the revolving speed and the pressure property of a hydraulic transformer, the system is used for solving the problem that the revolving speed and pressure property of the hydraulic transformer can not be measured yet by the test experiment system at present. The test experiment system is characterized in that the constant pressure output end of a hydraulic constant pressure network assembly is communicated with the high-pressure end A port of the hydraulic transformer; a control assembly is connected with the hydraulic transformer; the load output end of an artificial load assembly is communicated with the load end B port of the hydraulic transformer; a high-pressure end A port pressure monitoring assembly is connected with the high-pressure end A port of the hydraulic transformer; a load end B port pressure monitoring assembly is connected with the load end B port of the hydraulic transformer; an A port flow sensor is connected with the high-pressure end A port of the hydraulic transformer; and a B port flow sensor is connected with the load end B port of the hydraulic transformer. The test experiment system disclosed by the invention is used for the property test of the hydraulic transformer.
Description
Technical field
The present invention relates to a kind of testing experimental system, be specifically related to a kind of rotating speed and pressure testing experimental system of hydraulic transformer.
Background technique
Hydraulic system is applied to a lot of occasions owing to having the large characteristics of specific power; but hydraulic system also exists the not high shortcoming of efficient simultaneously; under growing energy crisis, the energy-conservation research of hydraulic system is just becoming the focus that numerous scientific research personnel pay close attention to.
Realized the volume of executive component is controlled based on the Secondary Regulation Technology of constant pressure network, do not had restriction loss, improved system effectiveness, and can carry out recycling to the energy of load.Although the secondary adjusting hydrostatic transmission system is widely used in a plurality of industries, it is variable that but the working principle of secondary adjusting hydrostatic transmission system has determined its executive component, this is to realize easily when being oil hydraulic motor for executive component, but when executive component is oil hydraulic cylinder, because the piston area of oil hydraulic cylinder is difficult at work real-time change and adjusting, so can't carry out secondary regulates, can only control with hydrovalve, this controlling method has been introduced restriction loss and can not have been reclaimed the energy of load, so that system effectiveness is very low, make the application of constant pressure network secondary adjusting hydrostatic transmission system be subject to certain limitation.
In order to solve under the constant pressure network system secondary of quantitative executive component is regulated problem, similar with the transformer of electric power system, this novel hydraulic element of hydraulic transformer has just appearred.Hydraulic transformer is along with the development of constant pressure network Secondary Regulation Technology produces, and hydraulic transformer does not have restriction loss in theory, can control efficiently the motion of quantitative hydraulic executive component.Hydraulic transformer can be operated in four-quadrant, when utilizing hydraulic transformer to control quantitative executive component, does not have in theory restriction loss, has therefore improved system effectiveness; Having in the recuperable situations of load such as gravitational potential energy, kinetic energy, can be recovered to energy in the hydraulic accumulator or offer other executive component, can carry out recycling to energy, therefore greatly improving the efficient of system.The appearance of hydraulic transformer has solved in the constant pressure network secondary regulation system carries out the problem that secondary is regulated to quantitative executive component, has enlarged the application area of constant pressure network Secondary Regulation Technology, and has greatly simplified hydraulic system.At present, also there is not a kind of testing experimental system to test rotating speed and the pressure of hydraulic transformer.
Summary of the invention
The present invention is for solving the problem that does not also have a kind of testing experimental system to test rotating speed and the pressure of hydraulic transformer at present, and then proposes a kind of rotating speed and pressure testing experimental system of hydraulic transformer.
The present invention addresses the above problem the technological scheme of taking to be: the present invention includes the hydraulic constant pressure networking component, control unit, the fictitious load assembly, high voltage terminal A mouth pressure monitoring assembly, low voltage terminal T mouth pressure monitoring assembly, load end B mouth pressure monitoring assembly, A mouth flow transducer, fuel tank and B mouth flow transducer, the oil outlet of fuel tank is connected with the hydraulic constant pressure networking component, the filler opening of fuel tank is connected with the oil outlet of hydraulic transformer, hydraulic constant pressure networking component constant pressure output terminal is communicated with the high voltage terminal A mouth of hydraulic transformer, control unit is connected with hydraulic transformer, fictitious load assembly load output terminal is communicated with the load end B mouth of hydraulic transformer, high voltage terminal A mouth pressure monitoring assembly is connected with the high voltage terminal A mouth of hydraulic transformer, low voltage terminal T mouth pressure monitoring assembly is connected with the low voltage terminal T mouth of hydraulic transformer, load end B mouth pressure monitoring assembly is connected with the load end B mouth of hydraulic transformer, A mouth flow transducer is connected with the high voltage terminal A mouth of hydraulic transformer, and B mouth flow transducer is connected with the load end B mouth of hydraulic transformer.
The invention has the beneficial effects as follows: the invention provides a kind of hydraulic transformer rotating speed based on constant pressure network and the test system of pressure; this system utilizes throttle valve to come fictitious load; set the highest outlet pressure with relief valve, hydraulic transformer is protected.This system utilizes electrohydraulic control control oscillating motor to realize telecontrol to hydraulic transformer, can gather and store pressure and the flow of each flow mouth of hydraulic transformer, by simple calculating, can calculate the transformation ratio of hydraulic transformer; The present invention is simple in structure, and is simple to operation, and measurement result is accurate, and conventional efficient is high.
Description of drawings
Fig. 1 is overall structure schematic representation of the present invention.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system comprise hydraulic constant pressure networking component 1, control unit 2, fictitious load assembly 3, high voltage terminal A mouth pressure monitoring assembly 4, low voltage terminal T mouth pressure monitoring assembly 5, load end B mouth pressure monitoring assembly 6, A mouth flow transducer 7, fuel tank 9 and B mouth flow transducer 10, the oil outlet of fuel tank 9 is connected with hydraulic constant pressure networking component 1, the filler opening of fuel tank 9 is connected with the oil outlet of hydraulic transformer 8, hydraulic constant pressure networking component 1 constant pressure output terminal is communicated with the high voltage terminal A mouth of hydraulic transformer 8, control unit 2 is connected with hydraulic transformer 8, fictitious load assembly 3 load output terminals are communicated with the load end B mouth of hydraulic transformer 8, high voltage terminal A mouth pressure monitoring assembly 4 is connected with the high voltage terminal A mouth of hydraulic transformer 8, low voltage terminal T mouth pressure monitoring assembly 5 is connected with the low voltage terminal T mouth of hydraulic transformer 8, load end B mouth pressure monitoring assembly 6 is connected with the load end B mouth of hydraulic transformer 8, A mouth flow transducer 7 is connected with the high voltage terminal A mouth of hydraulic transformer 8, and B mouth flow transducer 10 is connected with the load end B mouth of hydraulic transformer 8.
Hydraulic constant pressure networking component 1 produces an adjustable constant pressure in the present embodiment, for hydraulic transformer 8 provides power source; 2 pairs of hydraulic transformers 8 of control unit are controlled; Fictitious load assembly 3 is used for fictitious load; The low voltage terminal T mouth of hydraulic transformer 8 is communicated with fuel tank 9, realizes adaptive oil suction or oil extraction, makes hydraulic transformer 8 satisfy the flow conservation.
Embodiment two: present embodiment is described in conjunction with Fig. 1, the hydraulic constant pressure networking component 1 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system comprises constant pressure variable displacement pump 1-1, motor 1-2, bi-bit bi-pass solenoid directional control valve 1-3, high-pressure hydraulic accumulator 1-4, the first bi-bit bi-pass selector valve 1-5, low-pressure hydraulic accumulator 1-6 and the second bi-bit bi-pass selector valve 1-7, motor 1-2 is connected with constant pressure variable displacement pump 1-1, the filler opening of constant pressure variable displacement pump 1-1 is connected with the oil outlet of fuel tank 9, the high voltage terminal A mouth of the oil outlet hydraulic transformer 8 of constant pressure variable displacement pump 1-1 connects, the pipeline that high-pressure hydraulic accumulator 1-4 is arranged on by bi-bit bi-pass solenoid directional control valve 1-3 between the high voltage terminal A mouth of constant pressure variable displacement pump 1-1 oil outlet and hydraulic transformer 8 is connected, the first bi-bit bi-pass selector valve 1-5 is arranged on the pipeline between the high voltage terminal A mouth of constant pressure variable displacement pump 1-1 oil outlet and hydraulic transformer 8, and low-pressure hydraulic accumulator 1-6 is arranged on the pipeline between fuel tank 1 filler opening and hydraulic transformer 8 oil outlets by the second bi-bit bi-pass selector valve 1-7.
The technique effect of present embodiment is: high-pressure hydraulic accumulator 1-4 can carry out the recovery of energy.
Other composition and annexation are identical with embodiment one.
Embodiment three: present embodiment is described in conjunction with Fig. 1, be provided with the first one-way valve 1-8 between the filler opening of the constant pressure variable displacement pump 1-1 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system and the oil outlet, the oil outlet of constant pressure variable displacement pump 1-1 is provided with egress filtering device 1-9.Other composition and annexation are identical with embodiment two.
Embodiment four: in conjunction with Fig. 1 present embodiment is described, the pipeline between the egress filtering device 1-9 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system and the bi-bit bi-pass solenoid directional control valve 1-3 is provided with the second one-way valve 1-10.Other composition and annexation are identical with embodiment two or three.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, is provided with successively stop valve 11 and inlet oil filter 12 between the oil outlet of the fuel tank 1 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system and the filler opening of constant pressure variable displacement pump 1-1.Other composition and annexation are identical with embodiment one or two.
Embodiment six: present embodiment is described in conjunction with Fig. 1, be provided with safety valve 13 between the hydraulic constant pressure networking component 1 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system and the hydraulic transformer 8, one end of safety valve 13 is connected with the high voltage terminal A mouth of hydraulic transformer 8, and the other end of safety valve 13 is connected with hydraulic transformer 8 oil outlets.
The technique effect of present embodiment is: safety valve 13 is set up the maximum pressure of system, and when system pressure was higher than safety valve 13 setting value, safety valve 13 was opened, and played the effect of protective system.
Other composition and annexation are identical with embodiment one.
Embodiment seven: present embodiment is described in conjunction with Fig. 1, the control unit 2 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system comprises voltage control oil cylinder 2-1, electrohydraulic control 2-2 and hydraulic oil source 2-3, hydraulic oil source 2-3 output terminal is connected with electromagnetic servo valve 2-2 input end, electrohydraulic control 2-2 output terminal is connected with voltage control oil cylinder 2-1 input end, and the output terminal of voltage control oil cylinder 2-1 is connected with the load end B mouth of hydraulic transformer 8.
The technique effect of present embodiment is: hydraulic oil source 2-3 provides the power oil sources for the control of hydraulic transformer 8, electrohydraulic control 2-2 is in order to control voltage control oil cylinder 2-1 motion, and then the thrust plate rotation angle of control hydraulic transformer 8, realize the adjusting of transformation ratio.
Other composition and annexation are identical with embodiment one.
Embodiment eight: present embodiment is described in conjunction with Fig. 1, the fictitious load assembly 3 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system comprises relief valve 3-1 and throttle valve 3-2, and relief valve 3-1 is connected with throttle valve 3-2 with the load end B mouth of hydraulic transformer 8 and is connected.
Present embodiment relief valve 3-1 and throttle valve 3-2 can fictitious load; Regulate flow and pressure that throttle valve 3-2 opening aperture changes the load end B mouth of hydraulic transformer 8, to simulate different complicated situations; Relief valve 3-1 proof load force value guarantees the safety of hydraulic transformer 8 less than certain value.
Other composition and annexation and embodiment one, two or three identical.
Embodiment nine: present embodiment is described in conjunction with Fig. 1, the high voltage terminal A mouth pressure monitoring assembly 4 of the rotating speed of the described a kind of hydraulic transformer of present embodiment and pressure testing experimental system comprises A mouth pressure sensor 4-1 and A mouth pressure table 4-2, A mouth pressure sensor 4-1 and A mouth pressure table 4-2 are separately positioned on the high voltage terminal A mouth of hydraulic transformer 8, low voltage terminal T mouth pressure monitoring assembly 5 comprises T mouth pressure sensor 5-1 and T mouth pressure table 5-2, T mouth pressure sensor 5-1 and T mouth pressure table 5-2 are separately positioned on the low voltage terminal T mouth of hydraulic transformer 8, load end B mouth pressure monitoring assembly 6 comprises B mouth pressure sensor 6-1 and B mouth pressure table 6-2, and B mouth pressure sensor 6-1 and B mouth pressure table 6-2 are separately positioned on the load end B mouth of hydraulic transformer 8.
The technique effect of present embodiment is: A mouth pressure sensor 4-1, A mouth pressure table 4-2, T mouth pressure sensor 5-1, T mouth pressure table 5-2, B mouth pressure sensor 6-1, B mouth pressure table 6-2 can calculate transformation ratio and the efficient of hydraulic transformer 8 in order to realize the test to hydraulic transformer 8 pressure and flow parameter.
Other composition and annexation are identical with embodiment one.
Working principle
The present invention to the testing property process of hydraulic transformer is:
Step 4, according to pressure and the rotating speed measured, can calculate the transformation ratio of hydraulic transformer 8.
Claims (9)
1. the rotating speed of a hydraulic transformer and pressure testing experimental system, it is characterized in that: the rotating speed of described a kind of hydraulic transformer and pressure testing experimental system comprise hydraulic constant pressure networking component (1), control unit (2), fictitious load assembly (3), high voltage terminal A mouth pressure monitoring assembly (4), low voltage terminal T mouth pressure monitoring assembly (5), load end B mouth pressure monitoring assembly (6), A mouth flow transducer (7), fuel tank (9) and B mouth flow transducer (10), the oil outlet of fuel tank (9) is connected with hydraulic constant pressure networking component (1), the filler opening of fuel tank (9) is connected with the oil outlet of hydraulic transformer (8), hydraulic constant pressure networking component (1) constant pressure output terminal is communicated with the high voltage terminal A mouth of hydraulic transformer (8), control unit (2) is connected with hydraulic transformer (8), fictitious load assembly (3) load output terminal is communicated with the load end B mouth of hydraulic transformer (8), high voltage terminal A mouth pressure monitoring assembly (4) is connected with the high voltage terminal A mouth of hydraulic transformer (8), low voltage terminal T mouth pressure monitoring assembly (5) is connected with the low voltage terminal T mouth of hydraulic transformer (8), load end B mouth pressure monitoring assembly (6) is connected with the load end B mouth of hydraulic transformer (8), A mouth flow transducer (7) is connected with the high voltage terminal A mouth of hydraulic transformer (8), and B mouth flow transducer (10) is connected with the load end B mouth of hydraulic transformer (8).
2. the according to claim 1 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system, it is characterized in that: hydraulic constant pressure networking component (1) comprises constant pressure variable displacement pump (1-1), motor (1-2), bi-bit bi-pass solenoid directional control valve (1-3), high-pressure hydraulic accumulator (1-4), the first bi-bit bi-pass selector valve (1-5), low-pressure hydraulic accumulator (1-6) and the second bi-bit bi-pass selector valve (1-7), motor (1-2) is connected with constant pressure variable displacement pump (1-1), the filler opening of constant pressure variable displacement pump (1-1) is connected with the oil outlet of fuel tank (9), the high voltage terminal A mouth of the oil outlet hydraulic transformer (8) of constant pressure variable displacement pump (1-1) connects, the pipeline that high-pressure hydraulic accumulator (1-4) is arranged on by bi-bit bi-pass solenoid directional control valve (1-3) between the high voltage terminal A mouth of constant pressure variable displacement pump (1-1) oil outlet and hydraulic transformer (8) is connected, the first bi-bit bi-pass selector valve (1-5) is arranged on the pipeline between the high voltage terminal A mouth of constant pressure variable displacement pump (1-1) oil outlet and hydraulic transformer (8), and low-pressure hydraulic accumulator (1-6) is arranged on the pipeline between fuel tank (1) filler opening and hydraulic transformer (8) oil outlet by the second bi-bit bi-pass selector valve (1-7).
3. the according to claim 2 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system, it is characterized in that: be provided with the first one-way valve (1-8) between the filler opening of constant pressure variable displacement pump (1-1) and the oil outlet, the oil outlet of constant pressure variable displacement pump (1-1) is provided with egress filtering device (1-9).
4. according to claim 2 or the rotating speed of 3 described a kind of hydraulic transformers and pressure testing experimental system, it is characterized in that: the pipeline between egress filtering device (1-9) and the bi-bit bi-pass solenoid directional control valve (1-3) is provided with the second one-way valve (1-10).
5. the according to claim 1 and 2 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system is characterized in that: be provided with successively stop valve (11) and inlet oil filter (12) between the filler opening of the oil outlet of fuel tank (1) and constant pressure variable displacement pump (1-1).
6. the according to claim 1 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system, it is characterized in that: be provided with safety valve (13) between hydraulic constant pressure networking component (1) and the hydraulic transformer (8), one end of safety valve (13) is connected with the high voltage terminal A mouth of hydraulic transformer (8), and the other end of safety valve (13) is connected with hydraulic transformer (8) oil outlet.
7. the according to claim 1 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system, it is characterized in that: control unit (2) comprises voltage control oil cylinder (2-1), electrohydraulic control (2-2) and hydraulic oil source (2-3), hydraulic oil source (2-3) output terminal is connected with electromagnetic servo valve (2-2) input end, electrohydraulic control (2-2) output terminal is connected with voltage control oil cylinder (2-1) input end, and the output terminal of voltage control oil cylinder (2-1) is connected with the load end B mouth of hydraulic transformer (8).
8. according to claim 1, the rotating speed of 2 or 3 described a kind of hydraulic transformers and pressure testing experimental system, it is characterized in that: fictitious load assembly (3) comprises relief valve (3-1) and throttle valve (3-2), and relief valve (3-1) is connected 3-2 with throttle valve) be connected with the load end B mouth of hydraulic transformer (8) respectively.
9. the according to claim 1 rotating speed of described a kind of hydraulic transformer and pressure testing experimental system, it is characterized in that: high voltage terminal A mouth pressure monitoring assembly (4) comprises A mouth pressure sensor (4-1) and A mouth pressure table (4-2), A mouth pressure sensor (4-1) and A mouth pressure table (4-2) are separately positioned on the high voltage terminal A mouth of hydraulic transformer (8), low voltage terminal T mouth pressure monitoring assembly (5) comprises T mouth pressure sensor (5-1) and T mouth pressure table (5-2), T mouth pressure sensor (5-1) and T mouth pressure table (5-2) are separately positioned on the low voltage terminal T mouth of hydraulic transformer (8), load end B mouth pressure monitoring assembly (6) comprises B mouth pressure sensor (6-1) and B mouth pressure table (6-2), and B mouth pressure sensor (6-1) and B mouth pressure table (6-2) are separately positioned on the load end B mouth of hydraulic transformer (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104385964A CN102900730A (en) | 2012-11-06 | 2012-11-06 | Test experiment system for revolving speed and pressure property of hydraulic transformer |
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| CN2012104385964A CN102900730A (en) | 2012-11-06 | 2012-11-06 | Test experiment system for revolving speed and pressure property of hydraulic transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867527A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Multifunctional hydraulic test equipment |
| CN103867530A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Testing system for hydraulic motor |
| CN103867531A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Hydraulic power supply providing system |
| CN103867529A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Testing system for hydraulic ram |
| CN107454928A (en) * | 2017-04-20 | 2017-12-08 | 惠州市科特测控工程有限公司 | A kind of electro-hydraulic servo power cylinder |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103867527A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Multifunctional hydraulic test equipment |
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| CN103867531A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Hydraulic power supply providing system |
| CN103867529A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Testing system for hydraulic ram |
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| CN107454928A (en) * | 2017-04-20 | 2017-12-08 | 惠州市科特测控工程有限公司 | A kind of electro-hydraulic servo power cylinder |
| CN107454928B (en) * | 2017-04-20 | 2019-12-17 | 惠州市科特测控工程有限公司 | Electro-hydraulic servo boosting cylinder |
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Application publication date: 20130130 |