CN110043533A - The measuring device and method of air separation pressure in contact surface hydraulic oil - Google Patents
The measuring device and method of air separation pressure in contact surface hydraulic oil Download PDFInfo
- Publication number
- CN110043533A CN110043533A CN201910339250.0A CN201910339250A CN110043533A CN 110043533 A CN110043533 A CN 110043533A CN 201910339250 A CN201910339250 A CN 201910339250A CN 110043533 A CN110043533 A CN 110043533A
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- Prior art keywords
- case lid
- speed camera
- contact surface
- pressure
- hydraulic oil
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Classifications
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0427—Heating
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The measuring device and method of air separation pressure in contact surface hydraulic oil, thermometer (4), pressure gauge (5) and suction hose (6) are installed on clean oil case lid (9), series connection triple valve (7) and shutoff valve (8) on suction hose (6), and connect vacuum pump (23)；Clean oil case lid (9) is connect with cylindrical guide (3), and experimental material mounting rack (12) is fixed below clean oil case lid (9) by connecting rod (11)；Laser light sheet (19) is placed at an angle of 90 with high speed camera (15), and high-speed camera (15) is connect by conducting wire with computer (17).Vacuum pump gradually extracts the air in transparent fuel tank out, gradually decreases the pressure in fuel tank.In the case where different contact surfaces, the air dissolved in oil liquid is separated in the form of bubble, by the record of high speed camera, is found gas core in contact surface, is measured internal pressure and temperature, measure air and separate pressure value in oil liquid.
Description
Technical field
The present invention relates to hydraulic techniques, and in particular to the measuring technique of the air separation pressure in contact surface hydraulic oil.
Technical background
Currently, hydraulic oil container degasification technology is to improve an important research direction of hydraulic system stability and reliability.
Usual gas is present in oil liquid with being mixed into and dissolving in two ways, mixed gas can due to gas-liquid density is different gradually emersion
Pasta, and the gas dissolved in can only could be separated when environmental pressure is separated lower than its gas and pressed from oil liquid, in turn
It can just be removed, shadow of the process that gas is separated from oil liquid by factors such as oil liquid temperature, contact surface material, contact surface roughness
It rings, there is certain randomness, separation process is not easy to observe.It is to what the measurement of air separation pressure needed to build complexity at present
System, and test result is not accurate enough.Based on such mechanism, in degasification technical foundation research field, it is necessary to accurately measure
The separation pressure of air in practical oil liquid, to propose preferably degasification method.
Summary of the invention
The object of the present invention is to provide the measuring devices and method of air separation pressure in a kind of contact surface hydraulic oil.
The measuring device and method of air separation pressure, contact surface hydraulic oil are hollow in contact surface hydraulic oil of the invention
The measuring device of gas separation pressure, by guide rail bracket 1, pressure gauge 5, thermometer 4, suction hose 6, upper cover 9, rectangular transparent fuel tank
20, triple valve 7, shutoff valve 8, vacuum pump 9, constant water bath box 13, high-speed camera 15, laser light sheet 19, the first tripod
16, the second tripod 18, liquid level dividing ruler 22, test material mounting rack 21, computer 17 form, and transparent fuel tank 20 is an opening
All-transparent container, outer surface be equipped with liquid level dividing ruler 22, inject hydraulic oil after be put into thermostat water bath 13, thermostat water bath
13 be the heating container that a square aperture can be heated and be kept the temperature；Thermometer 4,5 and of pressure gauge are installed on clean oil case lid 9
Suction hose 6, suction hose 6 and 20 internal communication of transparent fuel tank；It is installed in series and a triple valve 7 and shuts off on suction hose 6
Valve 8, and connect vacuum pump 23；Clean oil case lid 9 is connect by screw thread with cylindrical guide 3, and experimental material mounting rack 12 passes through company
Extension bar 11 is fixed below clean oil case lid 9；Gask-O-Seal 10 is placed between transparent fuel tank 20 and clean oil case lid 9；Circle
Column guide rail 3 is fixed on guide rail bracket 1 by fixing screws 2；Laser light sheet 19 is connect with the second tripod 18, high speed camera 15
It is fixed on the first tripod 16, laser light sheet 19 is placed at an angle of 90 with high speed camera 15, passes through high speed camera 15
Record finds the gas core in contact surface；High-speed camera 15 is connect by conducting wire with computer 17.
Using the measurement method of the measuring device of air separation pressure in above-described contact surface hydraulic oil, step
Are as follows:
(1) fixing screws 2 are unclamped, clean oil case lid 9 is lifted to preset height by pull ring 24, fixing screws 2 is tightened, fixes saturating
Hydraulic oil is added in the position of bright fuel tank cap 9；
(2) four kinds of test materials 12a, 12b, 12c, 12d are placed on test material mounting rack 21；
(3) fixing screws 2 are unclamped, slowly put down clean oil case lid 9, and stand 2 hours or more；
(4) constant water bath box switch 13 is opened, set temperature value waits and observes thermometer 4；
(5) after oil liquid temperature reaches set temperature, laser light sheet 19 is successively opened, opens high-speed camera 15；
(6) computer 17 is opened, and adjusts laser light sheet 19 and high-speed camera 15, shoots high-speed camera 15 clearly
To four kinds of test materials 12a, 12b, 12c, 12d；
(7) shutoff valve 8 is opened, regulating three-way valve 7 is connected to suction hose 6 only with vacuum pump 23；
(8) vacuum pump 23 is opened, the image that high-speed camera 15 is shot is observed on computer 17, it is to be seen to arrive specimen surface from nothing
To when occurring many bubbles, shutoff valve 8, the registration of recording thermometer 4, pressure gauge 5 are closed, the numerical value that pressure gauge is shown is
The air separation pressure of sample material at such a temperature, record liquid level variation；
(9) regulating three-way valve 7 switchs, and suction hose 6 is communicated with the atmosphere, restores the pressure inside rectangular transparent fuel tank 20, real
Test end.
The beneficial effects of the present invention are:
1. the present invention can be convenient the air separation pressure for efficiently measuring hydraulic oil, device is simple, easy to operate；
2. apparatus of the present invention realize visualizing monitor to the separation process of bubble, the separation process for recording bubble can be understood；
3. it is convenient that the sample material of apparatus of the present invention is replaced, such as different surface roughness, the samples such as different oleophylic oleophobic material
Material can test the material of various materials in the present apparatus；
4. the temperature that can be evenly heated, and keep constant to oil liquid of apparatus of the present invention, test result are more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of experimental provision of the present invention, and Fig. 2 is 1 structural schematic diagram of guide rod frame of the invention, and Fig. 3 is
20 internal structure chart of transparent fuel tank of the invention, Fig. 4 are 9 structure chart of clean oil case lid of the invention.
Specific embodiment
As shown in Fig. 1 ~ Fig. 4, the measuring device of air separation pressure in contact surface hydraulic oil of the invention, by guide rail bracket 1,
Pressure gauge 5, thermometer 4, suction hose 6, upper cover 9, rectangular transparent fuel tank 20, triple valve 7, shutoff valve 8, vacuum pump 9, constant temperature
Water bath 13, high-speed camera 15, laser light sheet 19, the first tripod 16, the second tripod 18, liquid level dividing ruler 22, examination
Material mounting rack 21, the composition of computer 17 are tested, transparent fuel tank 20 is the all-transparent container of an opening, and outer surface is equipped with fluid level scale
Ruler 22 is put into thermostat water bath 13 after injecting hydraulic oil, and thermostat water bath 13 is that a square aperture can be heated and be kept the temperature
Heating container；Thermometer 4, pressure gauge 5 and suction hose 6, suction hose 6 and transparent fuel tank are installed on clean oil case lid 9
20 internal communications；Be installed in series a triple valve 7 and shutoff valve 8 on suction hose 6, and connects vacuum pump 23；Clean oil case lid 9
It is connect by screw thread with cylindrical guide 3, experimental material mounting rack 12 is fixed below clean oil case lid 9 by connecting rod 11；
Gask-O-Seal 10 is placed between transparent fuel tank 20 and clean oil case lid 9；Cylindrical guide 3 is fixed on guide rail bracket 1 by fixing screws 2
On；Laser light sheet 19 is connect with the second tripod 18, and high speed camera 15 is fixed on the first tripod 16, laser light sheet
19 place at an angle of 90 with high speed camera 15, by the record of high speed camera 15, find the gas core in contact surface；At a high speed
Video camera 15 is connect by conducting wire with computer 17.
As shown in Fig. 1 ~ Fig. 4, guide rail bracket 1 is threadedly secured on bottom plate 14, and guide rail bracket 1 passes through clean oil case lid 9
Diagonal line notch, cylindrical slideway 3 pass through aperture on 1 crossbeam of guide rail bracket and fixed fixing screws 2 with connect.
As shown in Figure 1 and Figure 2, there is a pull ring 24 in 3 end of slide rail, unclamps fixing screws 2, can by lifting ring 24,
Increase clean oil case lid 9, tightens and unclamp fixing screws 2, clean oil case lid 9 can be made to rest on preset height.
As shown in Figure 1, clean oil case lid 9 opens up notch in diagonal position, guide rail bracket 1 is made to pass through notch.
As shown in Fig. 1 ~ Fig. 3, test material mounting rack 21 is horizontally disposed, and vertical with connecting rod 11, test material installation
It is evenly arranged 4 holes on frame 21, four kinds of test materials 12a, 12b, 12c, 12d can be placed simultaneously respectively.
Using the measurement method of the measuring device of air separation pressure in above-described contact surface hydraulic oil, such as Fig. 1 ~ figure
Shown in 4, it the steps include:
(1) fixing screws 2 are unclamped, clean oil case lid 9 is lifted to preset height by pull ring 24, fixing screws 2 is tightened, fixes saturating
Hydraulic oil is added in the position of bright fuel tank cap 9；
(2) four kinds of test materials 12a, 12b, 12c, 12d are placed on test material mounting rack 21；
(3) fixing screws 2 are unclamped, slowly put down clean oil case lid 9, and stand 2 hours or more；
(4) constant water bath box switch 13 is opened, set temperature value waits and observes thermometer 4；
(5) after oil liquid temperature reaches set temperature, laser light sheet 19 is successively opened, opens high-speed camera 15；
(6) computer 17 is opened, and adjusts laser light sheet 19 and high-speed camera 15, shoots high-speed camera 15 clearly
To four kinds of test materials 12a, 12b, 12c, 12d；
(7) shutoff valve 8 is opened, regulating three-way valve 7 is connected to suction hose 6 only with vacuum pump 23；
(8) vacuum pump 23 is opened, the image that high-speed camera 15 is shot is observed on computer 17, it is to be seen to arrive specimen surface from nothing
To when occurring many bubbles, shutoff valve 8, the registration of recording thermometer 4, pressure gauge 5 are closed, the numerical value that pressure gauge is shown is
The air separation pressure of sample material at such a temperature, record liquid level variation；
(9) regulating three-way valve 7 switchs, and suction hose 6 is communicated with the atmosphere, restores the pressure inside rectangular transparent fuel tank 20, real
Test end.
The present invention will be further described with example with reference to the accompanying drawing.
Basic principle of the invention is the test specimen that different materials, different surface morphology are put into oil liquid, is excluding to be mixed into
It after formula bubble, is vacuumized using oil liquid of the vacuum pump to constant temperature, the gas then occurred with high-speed camera record surface of test piece
Bubble, the corresponding pressure value when a large amount of bubbles occurs in surface, pressure value at this time is the separation pressure that hydraulic oil dissolves in gas.
9 lower surface of clean oil case lid is connected through a screw thread the mounting rack 3 for being fixed with a test specimen, on the mounting rack of test specimen
4 apertures of cloth place 4 different materials, the test specimen 12a, 12b, 12c, 12d of different surface morphology.Clean oil case lid 9 is logical
Threaded connection is crossed to be connected with cylindrical sliding rail 3, by mobile slide rail 3, clean oil case lid 9 may be implemented to move up and down, when
After clean oil case lid 9 reaches specified altitude assignment, tightening fixing screws 2 is that fuel tank upper cover is fixed on certain altitude, subject easy to disassemble
It crosses.Clean oil case lid 9 has 1 thermometer 4, and clean oil case lid 9 is assembled together with the sealed rubber mat 10 of rectangular transparent fuel tank 20；
6 one end of suction hose is connect with transparent fuel tank upper cover 9, and one end connects first through triple valve 7, then through shut-off valve 8 with vacuum pump 9.It is high
Fast video camera 15 and 19 position of laser light sheet make shooting angle in 90 ° of angle arrangements.
Step 1: improving fuel tank upper cover 9, when reaching suitable height, fixing screws 2 are tightened, hydraulic oil are packed into transparent
Fuel tank 20 at the half of liquid level to fuel tank height, places different materials on different tests material mounting rack 21, no
Then sample material test material 12a, 12b, 12c, 12d with surface topography unscrew fixing screws 2, slowly test specimen is put
Enter in oil liquid, after standing 2-3 hours, opens constant water bath box 13 as oil liquid heating.
Step 2: successively opening laser light sheet 19 after oil liquid temperature reaches set temperature, high-speed camera is opened
15, computer 17 is opened, and adjust laser light sheet 19 and high-speed camera 15, takes high-speed camera 15 clearly
Test material 12a, 12b, 12c, 12d.
Step 3: opening shut-off valve 8, opens triple valve 7 and vacuum pump 23 and transparent fuel tank 20 are connected, open vacuum pump
23 gradually exclude the air of fuel tank internal, observe pressure gauge reading, when pressure gauge numerical value arrival -0.3MPa, closing is shut off
Valve 8.At this point, the formula bubble of being mixed into can accelerate to float under lower pressure difference, it, can when not seeing the bubble to suspend by microspur camera
Think that the mixed gas in hydraulic oil has excluded.
Step 4: opening shut-off valve 8 and vacuum pump 9 continue to reduce the pressure inside transparent fuel tank 20, in 17 screen of computer
Upper observation records the image of the acquisition by 12 surface of test specimen in fuel tank when bubble group in transparent fuel tank hydraulic oil
Pressure value at this time.The pressure value is the air separation pressure of oil liquid at this temperature.And record the liquid level of liquid level dividing ruler 22
Height change.
Step 5: rotation triple valve 7, makes to be again introduced into air in rectangular transparent fuel tank 20, restores rectangular transparent fuel tank 20
Interior pressure is atmospheric pressure, and experiment terminates.
Claims (6)
1. the measuring device of air separation pressure in contact surface hydraulic oil by guide rail bracket (1), pressure gauge (5), thermometer (4), is taken out
Gas hose (6), upper cover (9), rectangular transparent fuel tank (20), triple valve (7), shutoff valve (8), vacuum pump (9), constant water bath box
(13), high-speed camera (15), laser light sheet (19), the first tripod (16), the second tripod (18), liquid level dividing ruler
(22), test material mounting rack (21), computer (17) composition, it is characterised in that: transparent fuel tank (20) is the full impregnated of an opening
Bright container, outer surface are equipped with liquid level dividing ruler (22), are put into thermostat water bath (13) after injecting hydraulic oil, thermostat water bath
(13) it is heating container that a square aperture can be heated and be kept the temperature；Thermometer (4), pressure are installed on clean oil case lid (9)
Power table (5) and suction hose (6), suction hose (6) and rectangular transparent fuel tank (20) internal communication；Suction hose is connected on (6)
One triple valve (7) and shutoff valve (8) are installed, and connect vacuum pump (23)；Clean oil case lid (9) passes through screw thread and cylindrical guide
(3) it connects, experimental material mounting rack (12) is fixed below clean oil case lid (9) by connecting rod (11)；Transparent rectangular oil
Gask-O-Seal (10) are placed between case (20) and clean oil case lid (9)；Cylindrical guide (3) is fixed on by fixing screws (2) and is led
In rail gantry (1)；Laser light sheet (19) is connect with the second tripod (18), and high speed camera (15) is fixed on the first tripod
(16) on, laser light sheet (19) is placed at an angle of 90 with high speed camera (15), by the record of high speed camera (15), is sought
Look for the gas core in record contact surface；High-speed camera (15) is connect by conducting wire with computer (17).
2. the measuring device of air separation pressure in contact surface hydraulic oil according to claim 1, it is characterised in that: guide rail
Frame (1) is threadedly secured on bottom plate (14), and guide rail bracket (1) passes through the diagonal line notch of clean oil case lid (9), and cylinder is led
Rail (3) pass through aperture on guide rail bracket (1) crossbeam and fixed fixing screws (2) with connect.
3. the measuring device of air separation pressure in contact surface hydraulic oil according to claim 1, it is characterised in that: sliding
Guide rail (3) end has a pull ring (24), unclamps fixing screws (2), can be made on clean oil case lid (9) by lifting ring (24)
It rises, tightens and unclamp fixing screws (2), clean oil case lid (9) can be made to rest on preset height.
4. the measuring device of air separation pressure in contact surface hydraulic oil according to claim 1, it is characterised in that: transparent
Fuel tank cap (9) opens up notch in diagonal position, and guide rail bracket (1) is made to pass through notch.
5. the measuring device of air separation pressure in contact surface hydraulic oil according to claim 1, it is characterised in that: test
Material mounting rack (21) is horizontally disposed, and vertical with connecting rod (11), and 4 holes are evenly arranged on test material mounting rack (21),
Four kinds of test materials (12a, 12b, 12c, 12d) can be placed simultaneously respectively.
6. special using the measurement method of the measuring device of air separation pressure in contact surface hydraulic oil described in claim 1
Sign is, the steps include:
(1) fixing screws (2) are unclamped, clean oil case lid (9) is lifted to preset height by pull ring (24), tightens fixing screws
(2), the position of fixed clean oil case lid (9), is added hydraulic oil；
(2) four kinds of test materials (12a, 12b, 12c, 12d) are placed on test material mounting rack (21)；
(3) unclamp fixing screws (2), slowly put down clean oil case lid (9), and stand 2 hours or more；
(4) constant water bath box switch (13) is opened, set temperature value waits and observes thermometer (4)；
(5) after oil liquid temperature reaches set temperature, laser light sheet (19) successively are opened, are opened high-speed camera (15)；
(6) computer (17) are opened, and adjusts laser light sheet (19) and high-speed camera (15), make high-speed camera (15) can
Clearly take four kinds of test materials (12a, 12b, 12c, 12d)；
(7) shutoff valve (8) are opened, regulating three-way valve (7) is connected to suction hose (6) only with vacuum pump (23)；
(8) vacuum pump (23) are opened, the image of high-speed camera (15) shooting is observed on computer (17), it is to be seen to arrive sample table
It when many bubbles occurs from scratch in face, closes shutoff valve (8), the registration of recording thermometer (4), pressure gauge (5), pressure gauge is aobvious
The numerical value shown is the air separation pressure of sample material at such a temperature, record liquid level variation；
(9) regulating three-way valve (7) switchs, and suction hose (6) is communicated with the atmosphere, and restores transparent fuel tank (20) internal pressure,
Experiment terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339250.0A CN110043533A (en) | 2019-04-25 | 2019-04-25 | The measuring device and method of air separation pressure in contact surface hydraulic oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339250.0A CN110043533A (en) | 2019-04-25 | 2019-04-25 | The measuring device and method of air separation pressure in contact surface hydraulic oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110043533A true CN110043533A (en) | 2019-07-23 |
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ID=67279369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339250.0A Pending CN110043533A (en) | 2019-04-25 | 2019-04-25 | The measuring device and method of air separation pressure in contact surface hydraulic oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN110043533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358853A (en) * | 2021-06-18 | 2021-09-07 | 兰州理工大学 | Portable hydraulic system oil gas content on-line automatic detection device |
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| CN109236658A (en) * | 2018-10-26 | 2019-01-18 | 南京晨光森田环保科技有限公司 | A kind of gs-oil separator |
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- 2019-04-25 CN CN201910339250.0A patent/CN110043533A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005024247A (en) * | 2003-06-30 | 2005-01-27 | Nidec Tosok Corp | Testing device |
| CN201199326Y (en) * | 2008-04-29 | 2009-02-25 | 华东理工大学 | Automation observe and control system for gas separation experimental equipment |
| CN204932947U (en) * | 2015-09-17 | 2016-01-06 | 四川原觉科技有限公司 | A kind of oil dissolved gas separator |
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| CN113358853A (en) * | 2021-06-18 | 2021-09-07 | 兰州理工大学 | Portable hydraulic system oil gas content on-line automatic detection device |
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Application publication date: 20190723 |