CN104792972B - Portable hydraulic system air air content proving installation - Google Patents
Portable hydraulic system air air content proving installation Download PDFInfo
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- CN104792972B CN104792972B CN201510200282.4A CN201510200282A CN104792972B CN 104792972 B CN104792972 B CN 104792972B CN 201510200282 A CN201510200282 A CN 201510200282A CN 104792972 B CN104792972 B CN 104792972B
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- gear
- closed cavity
- hydraulic system
- leading screw
- driving mechanism
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- 238000009434 installation Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000004132 cross linking Methods 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention discloses a kind of portable hydraulic system air air content proving installation.Closed cavity oil-in is connected with needle stop valve, and hydraulic medium enters the closed cavity of air content tester by needle stop valve; Closed cavity is connected with the temperature sensor and pressure transducer that are respectively used to detected temperatures and pressure, closed cavity is built with piston and the leading screw that is fixedly connected with piston, driving mechanism is connected with closed cavity, driving mechanism and leading screw connecting band movable wire thick stick and piston axially-movable.The present invention adopts leading screw and piston movement to form vacuum chamber, completes fluid and is separated, can cut off and be connected with hydraulic system pipeline, and device volume is little, light, realizes portable type measuring in measurement.Have manual, automatic two kinds of modes, exploitativeness is strong, and applicability is wide.
Description
Technical field
The present invention relates to a kind of hydraulic system air air content proving installation, particularly relate to a kind of portable hydraulic system air air content proving installation.
Background technology
The hydraulic reservoir of many hydraulic systems adopts solution-air contact pressurized fuel tank, the solubleness causing air in hydraulic oil increased, the liquid level simultaneously in hydraulic reservoir is too low, accelerates the circulation of hydraulic oil, make bubble discharge difficulty, and cause air to enter hydraulic oil from outside; Secondly, hydraulic system pipeline mounting head is poorly sealed, air perisporium and guiding-tube bend position have the reason such as uneven that air also can be caused to be mixed into hydraulic system.
Air air content as the important indicator of hydraulic oil pollution, on the serious impact that the celerity of pressure wave in the viscosity of the modulus of volume elasticity of the hydraulic oil of hydraulic system, hydraulic oil, hydraulic oil will produce.Hydraulic oil air content crosses the condition of work that senior general worsens hydraulic pump and whole hydraulic system, reduce fuel delivery and the efficiency of hydraulic pump of hydraulic pump, also can cause hydraulic oil liquid impact, the cavitation erosion damage of hydraulic pump, pipeline pressure pulsation, so that produce the noise caused due to the discontinuous flowing of hydraulic oil.It is power source that Today, most air content pick-up unit mostly is vacuum pump, and shared volume is excessive, quality is overweight, can not carry, and the air content that can only realize specific environment detects, and does not have universal applicability.
Summary of the invention
The object of the present invention is to provide a kind of portable hydraulic system air air content proving installation, drive leading screw to replace vacuum pump with hand-crank or small type stepping motor, in closed cavity, form vacuum thus carry out gas-oil separation.Ensure that little, light, the portable requirement of air content tester volume, greatly improve the range of application of this device.Simultaneously both can manual operation, can intervene without the need to personnel again, exploitativeness is strong.
The technical solution used in the present invention is:
The present invention includes needle stop valve, closed cavity, leading screw, driving mechanism; Closed cavity oil-in is connected with needle stop valve, and hydraulic medium enters the closed cavity of air content tester by needle stop valve; Closed cavity is connected with the temperature sensor and pressure transducer that are respectively used to detected temperatures and pressure, closed cavity is built with piston and the leading screw that is fixedly connected with piston, driving mechanism is connected with closed cavity, driving mechanism and leading screw connecting band movable wire thick stick and piston axially-movable.
Described driving mechanism comprises hand-crank, drive motor, crank gear, motor gear, double crosslinking sliding gear, worm gear, worm screw; Drive motor output shaft is coaxially fixedly connected with hand-crank successively with motor gear, crank gear, driven shaft to be arranged on driving mechanism casing and parallel with drive motor output shaft, double crosslinking sliding gear and worm screw coaxial sleeve are on driven shaft, and double crosslinking sliding gear axially to be moved and spacing along driven shaft by spline between motor gear and crank gear; Worm gear and worm mesh axial restraint, described leading screw is coaxially connected with displacement transducer through after worm gear, and leading screw and worm wheel helical are connected.
The hydraulic medium that described hydraulic system adopts is phosphate-based fire resistant fluid force feed and petroleum base hydraulic oil.
Described worm gear and the gear train of worm screw have auto-lock function, bear the hydraulic medium pressure of hydraulic system.
The hydraulic medium pressure of described hydraulic system is less than or equal to 1MPa.
The beneficial effect that the present invention has is:
The present invention is sampled by the needle stop valve of air content tester, and can disconnect after sampling terminates and measuring with the connection of pipeline, and volume is little, quality light, has and can carry measurement, applied environment is wide, a little practical.
The present invention adopts hand-crank and stepper motor two kinds of type of drive dress to change, both can manual operation, and can intervene without the need to personnel again, exploitativeness is strong.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of Non-follow control of the present invention.
Fig. 2 is the structural principle schematic diagram of Electronic control of the present invention.
In figure: 1. closed cavity; 2. temperature sensor; 3. leading screw; 4. driving mechanism; 5. double crosslinking sliding gear; 6. hand-crank; 7. crank gear; 8. motor gear; 9. displacement transducer; 10. drive motor; 11. worm screws; 12. worm gears; 13. pressure transducers; 14. pistons; 15 needle stop valves.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the present invention includes needle stop valve 15, closed cavity 1, leading screw 3, driving mechanism 4; Closed cavity 1 oil-in is connected with needle stop valve 15, and hydraulic medium enters the closed cavity 1 of air content tester by needle stop valve 15; Closed cavity 1 is connected with the temperature sensor 2 and pressure transducer 13 that are respectively used to detected temperatures and pressure, closed cavity 1 is built with piston 14 and the leading screw 3 that is fixedly connected with piston 14, driving mechanism 4 is connected with closed cavity 1, driving mechanism 4 and leading screw 3 connecting band movable wire thick stick 3 and piston 14 axially-movable.
Driving mechanism 4 comprises hand-crank 6, drive motor 10, crank gear 7, motor gear 8, double crosslinking sliding gear 5, worm gear 12, worm screw 11; Drive motor 10 output shaft is coaxially fixedly connected with hand-crank 6 successively with motor gear 8, crank gear 7, driven shaft to be arranged on driving mechanism 4 casing and parallel with drive motor 10 output shaft, double crosslinking sliding gear 5 and worm screw 11 coaxial sleeve are on driven shaft, and double crosslinking sliding gear 5 axially to be moved and spacing along driven shaft by spline between motor gear 8 and crank gear 7; Worm gear 12 engages with worm screw 11 and axial restraint, and described leading screw 3 is coaxially connected with displacement transducer 9 through after worm gear 12, and leading screw 3 is connected with worm gear 12 threaded engagement.
The hydraulic medium that hydraulic system adopts is phosphate-based fire resistant fluid force feed and petroleum base hydraulic oil.
Worm gear 12 has auto-lock function with the gear train of worm screw 11, bears the hydraulic medium pressure of hydraulic system.
The hydraulic medium pressure of hydraulic system is less than or equal to 1MPa.
The specific embodiment of the invention course of work is as follows:
As depicted in figs. 1 and 2, before measuring, air content tester leading screw 3 and piston 14 are in topmost, without any medium in closed cavity 1.Open needle stop valve 15, as the fluid of hydraulic medium moving down by leading screw 3 and piston 14 in hydraulic system, enter the closed cavity 1 of air content tester through needle stop valve 15.After sampling terminates, close needle stop valve 15, air content tester and hydraulic system are disconnected, start air content and detect.The movable of leading screw 3 and piston 14 is realized by two kinds of modes: the rotation of hand-crank 6 and the electronic of drive motor 10, and both conversion is by the movement of double crosslinking sliding gear 5.
As shown in Figure 1, engage with crank gear 7 when double crosslinking sliding gear 5 is in left position, the transmission of hand-crank 6 rotation driven gear, worm and gear are rotated, and realize the movement of leading screw 3 and piston 14.As shown in Figure 2, engage with motor gear 8 when double crosslinking sliding gear 5 is in right position, the transmission of drive motor 10 rotation driven gear, worm and gear are rotated, and realize the movement of leading screw 3 and piston 14.Leading screw 3 and piston 14 move down, and closed cavity 1 realizes near vacuum, and the hydraulic medium in closed cavity 1 will carry out gas-oil separation.After being fully separated, by temperature sensor 2, pressure transducer 13 and displacement transducer 9, obtain the temperature after hydraulic medium gas-oil separation, pressure and volume.Then the content of air in hydraulic medium can be obtained again according to the state equation of ideal gas.Define according to air content thus try to achieve air content.
Air content temperature sensor that tester is equipped with 2, pressure transducer 13 and displacement transducer 9 in the present invention, be respectively used to measure temperature, pressure and the volume before and after the hydraulic medium gas-oil separation in closed cavity 1.
The temperature sensor 2 of the present invention in concrete enforcement, pressure transducer 13, displacement transducer 9 all adopt existing product, can adopt PT100-STT-S temperature sensor, HM91 pressure transducer, RGH24-RGS20 grating scale displacement transducer respectively as embodiment, drive motor 10 can adopt stepper motor.
Above-mentioned embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (4)
1. a portable hydraulic system air air content proving installation, is characterized in that: comprise needle stop valve (15), closed cavity (1), leading screw (3), driving mechanism (4); Closed cavity (1) oil-in is connected with needle stop valve (15), and hydraulic medium enters the closed cavity (1) of air content tester by needle stop valve (15); Closed cavity (1) is connected with the temperature sensor (2) and pressure transducer (13) that are respectively used to detected temperatures and pressure, closed cavity (1) is built with piston (14) and the leading screw (3) that is fixedly connected with piston (14), driving mechanism (4) is connected with closed cavity (1), driving mechanism (4) and leading screw (3) connecting band movable wire thick stick (3) and piston (14) axially-movable;
Described driving mechanism (4) comprises hand-crank (6), drive motor (10), crank gear (7), motor gear (8), double crosslinking sliding gear (5), worm gear (12), worm screw (11); Drive motor (10) output shaft is coaxially fixedly connected with hand-crank (6) successively with motor gear (8), crank gear (7), driven shaft to be arranged on driving mechanism (4) casing and parallel with drive motor (10) output shaft, double crosslinking sliding gear (5) and worm screw (11) coaxial sleeve are on driven shaft, and double crosslinking sliding gear (5) axially to be moved and spacing along driven shaft by spline between motor gear (8) and crank gear (7); Worm gear (12) engages with worm screw (11) and axial restraint, and described leading screw (3) is coaxially connected with displacement transducer (9) afterwards through worm gear (12), and leading screw (3) is connected with worm gear (12) threaded engagement.
2. a kind of portable hydraulic system air air content proving installation according to claim 1, is characterized in that: the hydraulic medium that described hydraulic system adopts is phosphate-based fire resistant fluid force feed and petroleum base hydraulic oil.
3. a kind of portable hydraulic system air air content proving installation according to claim 1, is characterized in that: described worm gear (12) has auto-lock function with the gear train of worm screw (11), bears the hydraulic medium pressure of hydraulic system.
4. a kind of portable hydraulic system air air content proving installation according to claim 1, is characterized in that: the hydraulic medium pressure of described hydraulic system is less than or equal to 1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200282.4A CN104792972B (en) | 2015-04-26 | 2015-04-26 | Portable hydraulic system air air content proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510200282.4A CN104792972B (en) | 2015-04-26 | 2015-04-26 | Portable hydraulic system air air content proving installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104792972A CN104792972A (en) | 2015-07-22 |
| CN104792972B true CN104792972B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510200282.4A Active CN104792972B (en) | 2015-04-26 | 2015-04-26 | Portable hydraulic system air air content proving installation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105435564B (en) * | 2015-11-16 | 2017-07-04 | 滁州市博康模具塑料有限公司 | Portable injection moulding machine special oil-water separator |
| CN107061667B (en) * | 2017-04-20 | 2019-09-13 | 浙江大学 | It is a kind of for instrument for measuring gas content imbibition and the transmission mechanism vacuumized |
| CN111272986B (en) * | 2020-04-08 | 2020-10-30 | 山东鼎程化工科技有限公司 | Hydraulic oil acidity detection equipment in hydraulic valve |
| CN113358853B (en) * | 2021-06-18 | 2023-07-21 | 兰州理工大学 | Portable hydraulic system fluid gas content on-line automatic checkout device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572530B1 (en) * | 1984-10-26 | 1986-12-26 | Armines | AUTOMATIC APPARATUS FOR MEASURING VAPORIZED FRACTIONS OF PURE AND / OR MIXED BODIES AND LIQUID AND / OR VAPOR PHASE DENSITIES WITH SAMPLING OF VAPOR PHASE SAMPLES |
| CN87201133U (en) * | 1987-03-25 | 1988-01-06 | 复旦大学 | Air-containing capacity in electric insulating oil measuring device |
| DE29606210U1 (en) * | 1996-04-04 | 1996-06-20 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Device for measuring the gas content in liquids |
| CN201575962U (en) * | 2009-12-25 | 2010-09-08 | 南京四新科技应用研究所有限公司 | Measuring instrument for free gas content in liquid |
| CN203350248U (en) * | 2013-06-21 | 2013-12-18 | 保定市华晟智能科技发展有限公司 | Tester for gas content of insulation oil |
| CN103573752B (en) * | 2013-10-21 | 2015-05-13 | 浙江大学 | On-line air content detection device for hydraulic system |
| CN103513011A (en) * | 2013-10-23 | 2014-01-15 | 杭州申昊信息科技有限公司 | Automatic calibration device for gas in transformer oil |
| CN204177800U (en) * | 2014-11-12 | 2015-02-25 | 国家电网公司 | A kind of transformer oil gas-detecting device |
| CN204694705U (en) * | 2015-04-26 | 2015-10-07 | 浙江大学 | A kind of portable hydraulic system air air content proving installation |
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| CN104792972A (en) | 2015-07-22 |
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