CN104421248A - Hydraulic system for high-flow hydraulic control one-way valve test bench - Google Patents
Hydraulic system for high-flow hydraulic control one-way valve test bench Download PDFInfo
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- CN104421248A CN104421248A CN201310391306.XA CN201310391306A CN104421248A CN 104421248 A CN104421248 A CN 104421248A CN 201310391306 A CN201310391306 A CN 201310391306A CN 104421248 A CN104421248 A CN 104421248A
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- Prior art keywords
- valve
- way valve
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- hydraulic
- hydraulic control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a hydraulic system for a high-flow hydraulic control one-way valve test bench. The hydraulic system comprises a hydraulic pump unit, a working cylinder and a hydraulic control one-way valve, a third reversing valve and the hydraulic control one-way valve are serially connected and then parallelly connected with a first reversing valve on a pipeline between a rodless cavity of the working cylinder and an outlet of the hydraulic pump unit, a second reversing valve is arranged on a pipeline between a rod cavity of the working cylinder and the outlet of the hydraulic pump unit, a hydraulic control port of the hydraulic control one-way valve is communicated with the rod cavity of the working cylinder, a first pressure sensor and a second pressure sensor are respectively arranged on an external pipeline for the rod cavity and the rodless cavity of the working cylinder, and a flow sensor is arranged on an inlet pipeline of the hydraulic control one-way valve. The hydraulic system has the advantages that the hydraulic system is suitable for measuring the performance of the high-flow hydraulic control one-way valve, adopts mechanical-electrical-hydraulic integrated design, and is high in automation degree and measuring precision, fine in sensitivity, stable and reliable in testing performance, stable in testing process and long in service life.
Description
Technical field
The invention belongs to technical field of hydraulic pressure, relate to a kind of hydraulic test system, be specifically related to a kind of high-flow hydraulic control one-way valve test stand hydraulic system.
Background technique
Comprehensive mechanical coal mining technology is efficient, safe coal-mining method.From 1954 after first fully mechanized mining face has been born in Britain, combine technology of adopting and to be just constantly developed and perfect, be worldwide widely used, become the direction of coal industry technical development.The constituent element of complete fully-mechanized mining equipment is broadly divided into support apparatus, coal excavation apparatus and haulage device.Hydraulic support is one of key equipment of support apparatus, accounts for 70% of fully mechanized coal face investment.During coal mining, numerous hydraulic support is arranged in a row, according to the length of mining face under mine, about a fully mechanized mining face about needs support 100 to 150 frame.
Due to the requirement of burn-proof and explosion prevention under mine, in hydraulic pressure system of hydraulic support transmission of pressure medium general choice be high-water-based emulsion.Flowed in the pipeline of a fixed structure and the system of control unit composition by emulsified liquid, realize transmission and the conversion of energy.Control valve, safety valve and Pilot operated check valve realize the action of each step, to meet the needs of mechanical coal mining by the coal winning technology requirement of regulation.Hydraulic support not only maintains certain working space when normal work, and when running into the burst accidents such as roof fall, can also play the important function of protection staff and device security
Pilot operated check valve is one of hydraulic support major control adjusting part.In the process that hydraulic support rises, Pilot operated check valve forward is opened, and the high-water-based emulsion with certain pressure makes hydraulic support rise by Pilot operated check valve.When hydraulic support normally works, Pilot operated check valve plays reverse cut-off effect, the pressure of keeping system.When hydraulic support declines, Pilot operated check valve reverse opening, makes the high-water-based emulsion in system flow out in a large number and fast, realizes the unloading of system.According to the functional requirement of hydraulic bracket system, the characteristics such as Pilot operated check valve should have little, the reverse good airproof performance of forward cracking pressure in hydraulic bracket system, compression shock is little when oppositely opening, noise is little.And due to hydraulic support decline time, the emulsified liquid of oil hydraulic cylinder inner high voltage is at short notice by Pilot operated check valve off-load, through-current capacity can reach 480L/min, in the process, system often produces impact shock, therefore realize in the process of action at hydraulic support, the dynamic performance that Pilot operated check valve is good is very important.For improving the dynamic performance optimizing hydraulic support Pilot operated check valve, researchers have done various improvement to hydraulic support Pilot operated check valve, but due to hydraulic support Pilot operated check valve large discharge, feature for hyperbaric environment, conventional common Pilot operated check valve test system well can not simulate its environment when hydraulic support action, have impact on the test result of dynamic performance.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of high-flow hydraulic control one-way valve test stand hydraulic system is provided, it is suitable for the measurement of high-flow hydraulic control one-way valve performance, adopt mechanical, electrical, liquid integrated design, automaticity is high, measuring accuracy is high, sensitivity good, test performance is reliable and stable, and test process is steady, system long service life.
For achieving the above object, the technical solution used in the present invention is: a kind of high-flow hydraulic control one-way valve test stand hydraulic system, comprise for system provides the oil hydraulic pump group of high-pressure emulsion, drive the operating cylinder of load movement, the selector valve one of jump signal is provided for the Pilot operated check valve tested and for system, selector valve two and selector valve three, it is characterized in that: after described selector valve three and the series connection of described Pilot operated check valve and described selector valve one be connected in parallel described operating cylinder rodless cavity and described oil hydraulic pump group export between pipeline on, pipeline between described operating cylinder rod chamber and described oil hydraulic pump group export is provided with described selector valve two, the hydraulic control mouth of described Pilot operated check valve is communicated with described operating cylinder rod chamber, the external pipe of described operating cylinder rod chamber and rodless cavity is respectively arranged with pressure transducer one and pressure transducer two, described Pilot operated check valve inlet pipe is provided with flow transducer.
Above-mentioned high-flow hydraulic control one-way valve test stand hydraulic system, it is characterized in that: described oil hydraulic pump group comprises multiple oil hydraulic pump, pipeline between each described oil hydraulic pump entrance and fuel tank is all disposed with stop valve and oil purifier, the outlet conduit of each described oil hydraulic pump is provided with one-way valve and pilot operated compound relief valve.
Above-mentioned high-flow hydraulic control one-way valve test stand hydraulic system, is characterized in that: described selector valve one is two two electric change valves, and described selector valve two and described selector valve three are two position, three-way electromagnetic change valve.
Above-mentioned high-flow hydraulic control one-way valve test stand hydraulic system, is characterized in that: described pressure transducer one and described pressure transducer two are thin-film pressure sensor, and described flow transducer is photoelectric flow rate transducer.
Above-mentioned high-flow hydraulic control one-way valve test stand hydraulic system, is characterized in that: the pipeline between described one-way valve and described pilot operated compound relief valve is provided with pressure gauge.
The present invention compared with prior art has the following advantages:
(1) be provided with pump group in this high-flow hydraulic control one-way valve test stand hydraulic system, oil hydraulic pump different in pump group is opened, the performance of Pilot operated check valve under different flows can be surveyed, be suitable for the measurement of high-flow hydraulic control one-way valve performance.
(2) this high-flow hydraulic control one-way valve test stand hydraulic system adopts mechanical, electrical, liquid integrated design, and working procedure can control system automatic operation, and automaticity is very high.
(3) this high-flow hydraulic control one-way valve test stand hydraulic system adopts DG1300-BZ-A-2-50 type thin-film pressure sensor and photoelectric flow rate transducer, and thus its measuring accuracy is high, sensitivity good, test performance is reliable and stable.
(4) this high-flow hydraulic control one-way valve test stand is steady with hydraulic system test process, system long service life.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Description of reference numerals:
1-fuel tank; 2-oil purifier; 3-stop valve;
4-oil hydraulic pump; 5-selector valve two; 6-selector valve one;
7-operating cylinder; 8-load; 9-pressure transducer one;
10-pressure transducer two; 11-Pilot operated check valve; 12-flow transducer;
13-selector valve three; 14-one-way valve; 15-pressure gauge;
16-pilot operated compound relief valve.
Embodiment
A kind of high-flow hydraulic control one-way valve test stand hydraulic system as shown in Figure 1, comprise for system provides the oil hydraulic pump group of high-pressure emulsion, with the operating cylinder 7 that dynamic load 8 is moved, the selector valve 1 of jump signal is provided for the Pilot operated check valve 11 tested and for system, selector valve 25 and selector valve 3 13, after described selector valve 3 13 and described Pilot operated check valve 11 are connected and described selector valve 1 be connected in parallel described operating cylinder 7 rodless cavity and described oil hydraulic pump group export between pipeline on, pipeline between described operating cylinder 7 rod chamber and described oil hydraulic pump group export is provided with described selector valve 25, the hydraulic control mouth of described Pilot operated check valve 11 is communicated with described operating cylinder 7 rod chamber, the external pipe of described operating cylinder 7 rod chamber and rodless cavity is respectively arranged with pressure transducer 1 and pressure transducer 2 10, described pressure transducer 1 and described pressure transducer 2 10 are DG1300-BZ-A-2-50 type thin-film pressure sensor.Described Pilot operated check valve 11 inlet pipe is provided with flow transducer 12, and described flow transducer 12 is photoelectric flow rate transducer.
As shown in Figure 1, described oil hydraulic pump group comprises multiple oil hydraulic pump 4, pipeline between each described oil hydraulic pump 4 entrance and fuel tank 1 is all disposed with stop valve 3 and oil purifier 2, the outlet conduit of each described oil hydraulic pump 4 is provided with one-way valve 14 and pilot operated compound relief valve 16.
As shown in Figure 1, described selector valve 1 is two two electric change valves, and described selector valve 25 and described selector valve 3 13 are two position, three-way electromagnetic change valve.
As shown in Figure 1, the pipeline between described one-way valve 14 and described pilot operated compound relief valve 16 is provided with pressure gauge 15.
The working procedure of high-flow hydraulic control one-way valve test stand hydraulic system of the present invention is: as shown in Figure 1, and regulator solution press pump group makes it export suitable flow.When the right position of selector valve 1, the left position of selector valve 25 and selector valve 3 13 right connecting systems, high-pressure emulsion enters operating cylinder 7 rodless cavity by the right position of selector valve 3 13 and the right bit stream of selector valve 1, when pressure in operating cylinder 7 rodless cavity is greater than the weight of pressure in operating cylinder 7 rod chamber and load 8, emulsified liquid in operating cylinder 7 rod chamber enters in fuel tank 1 by the left bit stream of selector valve 25, now load 8, by operating cylinder 7 upwards jack-up, can obtain corresponding test result by pressure transducer 1, pressure transducer 2 10 and flow transducer 12.
When the left position of selector valve 1, the left position of selector valve 25 and selector valve 3 13 left connecting systems, now Pilot operated check valve 11 is closed, system is in packing state, oil hydraulic pump group now can be made to quit work, operating cylinder 7 load-supporting 8 keeps static, can obtain corresponding test result by pressure transducer 1, pressure transducer 2 10 and flow transducer 12.
When the left position of selector valve 1, the right position of selector valve 25 and selector valve 3 13 left connecting systems, high-pressure emulsion enters operating cylinder 7 rod chamber by the right bit stream of selector valve 25, now the hydraulic control mouth of Pilot operated check valve 11 is communicated with oil hydraulic pump group, when the pressure of the hydraulic control mouth of Pilot operated check valve 11 be increased to can promote control piston and small valve core time, Pilot operated check valve 11 is oppositely opened, emulsified liquid in operating cylinder 7 rodless cavity enters in fuel tank 1 through Pilot operated check valve 11 and the left bit stream of selector valve 3 13, load 8 moves downward with operating cylinder 7, can by pressure transducer 1, pressure transducer 2 10 and flow transducer 12 obtain corresponding test result.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. a high-flow hydraulic control one-way valve test stand hydraulic system, comprise for system provides the oil hydraulic pump group of high-pressure emulsion, the operating cylinder (7) that band dynamic load (8) moves, the selector valve one (6) of jump signal is provided for the Pilot operated check valve (11) tested and for system, selector valve two (5) and selector valve three (13), it is characterized in that: after described selector valve three (13) and described Pilot operated check valve (11) series connection and described selector valve one (6) be connected in parallel described operating cylinder (7) rodless cavity and described oil hydraulic pump group export between pipeline on, pipeline between described operating cylinder (7) rod chamber and described oil hydraulic pump group export is provided with described selector valve two (5), the hydraulic control mouth of described Pilot operated check valve (11) is communicated with described operating cylinder (7) rod chamber, the external pipe of described operating cylinder (7) rod chamber and rodless cavity is respectively arranged with pressure transducer one (9) and pressure transducer two (10), described Pilot operated check valve (11) inlet pipe is provided with flow transducer (12).
2. according to high-flow hydraulic control one-way valve test stand hydraulic system according to claim 1, it is characterized in that: described oil hydraulic pump group comprises multiple oil hydraulic pump (4), pipeline between each described oil hydraulic pump (4) entrance and fuel tank (1) is all disposed with stop valve (3) and oil purifier (2), the outlet conduit of each described oil hydraulic pump (4) is provided with one-way valve (14) and pilot operated compound relief valve (16).
3. according to high-flow hydraulic control one-way valve test stand hydraulic system according to claim 1, it is characterized in that: described selector valve one (6) is two two electric change valves, described selector valve two (5) and described selector valve three (13) are two position, three-way electromagnetic change valve.
4. according to high-flow hydraulic control one-way valve test stand hydraulic system according to claim 1, it is characterized in that: described pressure transducer one (9) and described pressure transducer two (10) are thin-film pressure sensor, and described flow transducer (12) is photoelectric flow rate transducer.
5. according to high-flow hydraulic control one-way valve test stand hydraulic system according to claim 2, it is characterized in that: the pipeline between described one-way valve (14) and described pilot operated compound relief valve (16) is provided with pressure gauge (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391306.XA CN104421248A (en) | 2013-08-31 | 2013-08-31 | Hydraulic system for high-flow hydraulic control one-way valve test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391306.XA CN104421248A (en) | 2013-08-31 | 2013-08-31 | Hydraulic system for high-flow hydraulic control one-way valve test bench |
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| Publication Number | Publication Date |
|---|---|
| CN104421248A true CN104421248A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310391306.XA Pending CN104421248A (en) | 2013-08-31 | 2013-08-31 | Hydraulic system for high-flow hydraulic control one-way valve test bench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063652A (en) * | 2016-12-26 | 2017-08-18 | 安徽杰曼汽车零部件有限公司 | A kind of unidirectional valve opening pressure quick detection testing stand |
| CN112855664A (en) * | 2019-11-27 | 2021-05-28 | 天津大学青岛海洋技术研究院 | Test system for testing hydraulic pump by measuring quality |
| CN113932890A (en) * | 2020-07-14 | 2022-01-14 | 山东天工石油装备有限公司 | Analysis method capable of detecting accuracy of liquid production of check valve |
| CN115493922A (en) * | 2022-09-29 | 2022-12-20 | 四川宁怡科技有限公司 | High-throughput testing module and device capable of providing different stress-strain loads |
-
2013
- 2013-08-31 CN CN201310391306.XA patent/CN104421248A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063652A (en) * | 2016-12-26 | 2017-08-18 | 安徽杰曼汽车零部件有限公司 | A kind of unidirectional valve opening pressure quick detection testing stand |
| CN112855664A (en) * | 2019-11-27 | 2021-05-28 | 天津大学青岛海洋技术研究院 | Test system for testing hydraulic pump by measuring quality |
| CN113932890A (en) * | 2020-07-14 | 2022-01-14 | 山东天工石油装备有限公司 | Analysis method capable of detecting accuracy of liquid production of check valve |
| CN115493922A (en) * | 2022-09-29 | 2022-12-20 | 四川宁怡科技有限公司 | High-throughput testing module and device capable of providing different stress-strain loads |
| CN115493922B (en) * | 2022-09-29 | 2024-01-30 | 四川宁怡科技有限公司 | High-flux test module and device capable of providing different stress-strain loads |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |