CN105036049A - Vacuumizing oil injection device - Google Patents
Vacuumizing oil injection device Download PDFInfo
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- CN105036049A CN105036049A CN201510464879.XA CN201510464879A CN105036049A CN 105036049 A CN105036049 A CN 105036049A CN 201510464879 A CN201510464879 A CN 201510464879A CN 105036049 A CN105036049 A CN 105036049A
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- shutoff valve
- fuel tank
- energy disperser
- vacuum
- vacuum pump
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Abstract
Disclosed is a vacuumizing oil injection device. A buffer is connected with a first oil tank through a stainless steel pipe, a first check valve is arranged on the buffer, and a fourth check valve is arranged on the first oil tank. Meanwhile, a vacuum meter and a vacuum pump are arranged on the stainless steel pipe through which the buffer is connected with the first oil tank, a second check valve is connected to the vacuum meter, and a third check valve is connected to the vacuum pump. Furthermore, oil enters and goes out of the first oil tank through the bottom of the first oil tank, and the first oil tank is higher than other components. According to the device, the buffer is vacuumized through the vacuum pump, and hydraulic oil is smoothly pressed into the buffer to achieve quick oil injection by means of the internal pressure difference between the first oil tank and the buffer; in this way, testing time is effectively shortened, operation is convenient, and the requirement for the skill and experience of an operator is low; meanwhile, the amount of air mixed in the oil in the buffer is far smaller than that of a traditional oil injection mode by 2%, and therefore testing precision is improved greatly.
Description
Technical field
The present invention relates to undercarriage fatigue test oiling technical field, particularly relate to a kind of vacuum pumping oil filling device.
Background technology
Alighting gear fatigue test is the Key experiments of alighting gear in use performance guarantee, and also undercarriage fatigue determines the foundation in longevity simultaneously; Alighting gear fatigue test is tested according to " alighting gear becomes stroke fatigue test and wants summation approach " (GJB3098-97) usually, as everyone knows, the intermolecular distance of liquid is little can be used as incompressible material in macroscopic aspect, and the intermolecular distance of gas is very large, has compressibi1ity.In fatigue test, energy disperser is tested usually used as incompressible structure.When in energy disperser during entrained air, under identical Axial Loads, energy disperser amount of compression will become greatly, and then reduce test accuracy.Therefore in army's mark, the b article of clear stipulaties test article of 5.1.1 needs " all released by gas in energy disperser, be full of oil in chamber ".
Traditional oiling mode is: operator is fast by dripping of precise hard_drawn tuhes hydraulic oil, and then allows oil droplet instill zerk slowly, and vibration damper, impels energy disperser internal gas to discharge in time simultaneously; Usual whole oiling process need expend the time of 2 ~ 3 days, only can control air mixed volume about 2%; And the air-filled pore that energy disperser is arranged (general diameter only has 6mm) not only servicing fluids force feed, it is all undertaken by this hole that the simultaneously injection of hydraulic oil and energy disperser internal gas are discharged; When oil injecting speed is too fast, pasta fills whole oil nozzle, and now hydraulic oil will be extruded from oil nozzle by bubble, and then causes oiling failure.In addition, the energy disperser inner structure used at present is complicated, and its inner core bar, high-low pressure chamber, valve etc. impel inside to define each little air cavity, thus cause internal gas to discharge; Even if rocking by all angles, also do not improve significantly.And energy disperser inner air is not discharged, very large impact will be produced on amount of compression at the trial.
Summary of the invention
Technical matters solved by the invention is to provide a kind of vacuum pumping oil filling device, to solve the shortcoming in above-mentioned background technology.
Technical matters solved by the invention realizes by the following technical solutions:
A kind of vacuum pumping oil filling device, comprises energy disperser, the first shutoff valve, the second shutoff valve, the 3rd shutoff valve, the 4th shutoff valve, the 5th shutoff valve, vacuum indicator, vacuum pump, the first fuel tank and stainless steel tube; Wherein, energy disperser is connected with the first fuel tank by stainless steel tube, and on energy disperser, be provided with the first shutoff valve, the first fuel tank is provided with the 4th shutoff valve; The stainless steel tube be simultaneously connected with the first fuel tank at energy disperser is provided with vacuum indicator and vacuum pump, and vacuum indicator is connected with the second shutoff valve, vacuum pump is connected with the 3rd shutoff valve; In addition, the first fuel tank is bottom turnover oil, and its position is higher than other each equipment.
In the present invention, the end of bleeding of vacuum pump is connected with the second fuel tank, for remaining in the hydraulic oil in stainless steel tube pipeline after reclaiming oiling, and on the second fuel tank, is provided with the 5th shutoff valve.
In the present invention, the first fuel tank position is higher than other each more than equipment 0.5m.
In the present invention, stainless steel tube internal diameter is 6 ~ 10mm.
One vacuumizes correction oil injection method, and concrete steps are as follows:
1) equipment is installed
Energy disperser, the first shutoff valve, the second shutoff valve, the 3rd shutoff valve, the 4th shutoff valve, the 5th shutoff valve, vacuum indicator, vacuum pump, the first fuel tank and the second fuel tank are connected by stainless steel tube; And ensure that each shutoff valve is in closed condition, ensure that the first fuel tank is bottom turnover oil, and its position is higher than other each more than equipment 0.5m simultaneously;
2) vacuumize
After equipment installs, first open the first shutoff valve, the second shutoff valve and the 3rd shutoff valve, then start vacuum pump, stainless steel tube pipeline and energy disperser are vacuumized, until vacuum indicator no longer changes;
3) leak check
After waiting to vacuumize, first close the 3rd shutoff valve, then stop vacuum pump, and keep 4 ~ 8min, observe vacuum indicator and whether change, if vacuum indicator is motionless, namely represent that the sealing of each connecting line is intact; If vacuum indicator declines, then check the connection of each pipeline, after pending, again vacuumize, until each line seal is intact;
4) oiling
Property to be sealed is closed the second shutoff valve, is opened the 4th shutoff valve, by the vacuum of energy disperser inside, from the first fuel tank, suck fluid, until pasta no longer changes after checking; Now the first fuel tank is fuel-displaced by bottom, and pasta is higher than other more than equipment 0.5m, effectively can ensure that air can not suck in energy disperser;
5) tapping
After oiling completes, close the first shutoff valve, the 4th shutoff valve, and the first fuel tank, energy disperser, vacuum pump and vacuum indicator are removed; Open the 5th shutoff valve again, the hydraulic oil in each pipeline flow back in the second fuel tank by the 5th shutoff valve, can effectively prevent the hydraulic oil in pipeline from flowing out, thus test for contamination environment.
In the present invention, by vacuum pump, energy disperser is vacuumized, and utilize the first fuel tank and energy disperser internal differential pressure, thus hydraulic oil is pressed into energy disperser inside smoothly, and then realize oiling object; For ensureing to reduce the amount of air be mixed in fluid in energy disperser as far as possible, be P at vacuum pump air pressure
pump, be V to cavity volume
chamberenergy disperser carry out oiling, then remain in the volume of air V of energy disperser inner chamber after oiling
chamber 2calculate by Boyle law, its formula is:
, in formula: V
pipefor connecting the stainless steel tube volume between energy disperser and the first fuel tank, P
0for bar pressure,
be the pressure that the diff-H of the first fuel tank liquid level and energy disperser liquid level causes; Entrained air amount is pressed
calculate; If ignore
impact, vacuum pump reaches the pressure of 5Pa, to cavity volume V
chamberfor 690cm
3energy disperser carry out oiling, then after oiling, the volume of entrained air is:
, entrained air volume accounts for 0.00551% of cumulative volume, well below 2% of conventional fuel mode, significantly improves test accuracy; Simultaneously owing to being by vacuum pump evacuation, energy disperser fluid is injected by negative pressure, and it is fast that whole process completes speed, an oiling generally minute within complete, compare the oiling time of traditional approach couple of days, effectively improve oiling work efficiency; And alighting gear fatigue test often just needs oiling tens times, utilize this device, greatly can reduce test period, and easy and simple to handle, the skill too much without the need to operating personal and experience.
Beneficial effect: the present invention is vacuumized energy disperser by vacuum pump, and utilize the first fuel tank and energy disperser internal differential pressure, thus it is inner to realize quick oiling hydraulic oil to be pressed into smoothly energy disperser, effectively reduces test period, and easy and simple to handle, the skill too much without the need to operating personal and experience; The amount of air be mixed in simultaneous buffering device fluid, well below 2% of conventional fuel mode, significantly improves test accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of preferred embodiment of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See a kind of vacuum pumping oil filling device of Fig. 1, comprise energy disperser 1, first shutoff valve 2, second shutoff valve 3, the 3rd shutoff valve 4, the 4th shutoff valve 5, the 5th shutoff valve 6, vacuum indicator 7, vacuum pump 8, first fuel tank 9, second fuel tank 10 and stainless steel tube 11.
In the present embodiment, energy disperser 1 is connected with the first fuel tank 9 by stainless steel tube 11 (internal diameter 8mm), and is provided with on energy disperser 1 on first shutoff valve 2, first fuel tank 9 and is provided with the 4th shutoff valve 5; The stainless steel tube 11 be simultaneously connected with the first fuel tank 9 at energy disperser 1 is provided with vacuum indicator 7 and vacuum pump 8, and vacuum indicator 7 is connected with the second shutoff valve 3, vacuum pump 8 is connected with the 3rd shutoff valve 4, the bleeding to hold of second fuel tank 10 and vacuum pump 8 is connected, for remaining in the hydraulic oil in stainless steel tube 11 pipeline after reclaiming oiling, and be provided with the 5th shutoff valve 6 on the second fuel tank 10.
In the present embodiment, vacuumized by vacuum pump 8 pairs of energy dispersers 1, and utilize the first fuel tank 9 and energy disperser 1 internal differential pressure, thus it is inner hydraulic oil to be pressed into smoothly energy disperser 1, and then realize oiling object; Before oiling, first open the first shutoff valve 2, second shutoff valve 3, the 3rd shutoff valve 4 utilizes vacuum pump 8 the energy disperser 1 cavity internal gas pressure of oiling will drop to a below barometric pressure; During oiling, close the second shutoff valve 3, the 3rd shutoff valve 4, open the 4th shutoff valve 5, utilize barometric pressure by the hydraulic oil press-in energy disperser 1 in the first fuel tank 9.
In the present embodiment, for ensureing energy disperser 1 quick and precisely oiling, the concrete operation step vacuumizing correction oil injection method is as follows:
1) equipment is installed
Shown in Fig. 1, energy disperser 1, first shutoff valve 2, second shutoff valve 3, the 3rd shutoff valve 4, the 4th shutoff valve 5, the 5th shutoff valve 6, vacuum indicator 7, vacuum pump 8, first fuel tank 9 and the second fuel tank 10 are connected by stainless steel tube 11; And ensure that each shutoff valve is in closed condition, ensure that the first fuel tank 9 is for bottom turnover oil, and its position is higher than other each more than equipment 0.5m simultaneously;
2) vacuumize
First open the first shutoff valve 2, second shutoff valve 3, the 3rd shutoff valve 4, then start vacuum pump 8, vacuumize stainless steel tube 11 pipeline and energy disperser 1, until vacuum indicator 7 no longer changes, the general pumpdown time completes within 30s;
3) leak check
After waiting to vacuumize, first close the 3rd shutoff valve 4, then stop vacuum pump 8; Keep 5min, observe vacuum indicator 7 and whether change, if vacuum indicator 7 is motionless, namely represent that the sealing of each connecting line is intact; If vacuum indicator 7 declines, then check the connection of each pipeline, after pending, again vacuumize, until each line seal is intact;
4) oiling
Property to be sealed is closed the second shutoff valve 3, is opened the 4th shutoff valve 5, by the vacuum of energy disperser 1 inside, suck fluid, until pasta no longer changes from the first fuel tank 9 after checking; Now the first fuel tank 9 is fuel-displaced by bottom, and pasta is higher than other more than equipment 0.5m, effectively can ensure that air can not suck in energy disperser 1, and this process generally just can complete in 1 minute;
5) tapping
After oiling completes, close the first shutoff valve 2, the 4th shutoff valve 5, and the first fuel tank 9, energy disperser 1, vacuum pump 8 and vacuum indicator 7 are removed; Open the 5th shutoff valve 6 again, the hydraulic oil in each pipeline flow back in the second fuel tank 10 by the 5th shutoff valve 6, can effectively prevent the hydraulic oil in pipeline from flowing out, thus test for contamination environment.
In the present embodiment, for ensureing to reduce the amount of air be mixed in fluid in energy disperser 1 as far as possible, be P at vacuum pump 8 air pressure
pump, be V to cavity volume
chamberenergy disperser 1 carry out oiling, then remain in the volume of air V of energy disperser 1 inner chamber after oiling
chamber 2calculate by Boyle law, its formula is:
, in formula: V
pipefor connecting stainless steel tube 11 volume between energy disperser 1 and the first fuel tank 9, P
0for bar pressure,
be the pressure that the diff-H of the first fuel tank 9 liquid level and energy disperser 1 liquid level causes; Entrained air amount is pressed
calculate; If ignore
impact, vacuum pump 8 reaches the pressure of 5Pa, to cavity volume V
chamberfor 690cm
3energy disperser 1 carry out oiling, after oiling, the volume of entrained air is:
, entrained air volume accounts for 0.00551% of cumulative volume, well below 2% of conventional fuel mode, significantly improves test accuracy; Simultaneously owing to being vacuumized by vacuum pump 8, energy disperser 1 fluid is injected by negative pressure, and it is fast that whole process completes speed, and an oiling generally completed within 10 minutes, compared the oiling time of traditional approach couple of days, effectively improves oiling work efficiency; And alighting gear fatigue test often just needs oiling tens times, utilize this device, greatly can reduce test period, and easy and simple to handle, the skill too much without the need to operating personal and experience.
More than show and describe groundwork of the present invention and principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (7)
1. a vacuum pumping oil filling device, comprises energy disperser, the first shutoff valve, the second shutoff valve, the 3rd shutoff valve, the 4th shutoff valve, the 5th shutoff valve, vacuum indicator, vacuum pump, the first fuel tank and stainless steel tube; It is characterized in that, energy disperser is connected with the first fuel tank by stainless steel tube, and on energy disperser, be provided with the first shutoff valve, the first fuel tank is provided with the 4th shutoff valve; The stainless steel tube be simultaneously connected with the first fuel tank at energy disperser is provided with vacuum indicator and vacuum pump, and vacuum indicator is connected with the second shutoff valve, vacuum pump is connected with the 3rd shutoff valve; In addition, the first fuel tank is bottom turnover oil, and its position is higher than other each equipment.
2. a kind of vacuum pumping oil filling device according to claim 1, is characterized in that, the end of bleeding of vacuum pump is connected with the second fuel tank, and on the second fuel tank, be provided with the 5th shutoff valve.
3. a kind of vacuum pumping oil filling device according to claim 1, is characterized in that, the first fuel tank position is higher than other each more than equipment 0.5m.
4. a kind of vacuum pumping oil filling device according to claim 1, is characterized in that, stainless steel tube internal diameter is 6 ~ 10mm.
5. vacuumize a correction oil injection method, it is characterized in that, concrete steps are as follows:
1) equipment is installed
Energy disperser, the first shutoff valve, the second shutoff valve, the 3rd shutoff valve, the 4th shutoff valve, the 5th shutoff valve, vacuum indicator, vacuum pump, the first fuel tank and the second fuel tank are connected by stainless steel tube; And ensure that each shutoff valve is in closed condition, ensure that the first fuel tank is bottom turnover oil, and its position is higher than other each more than equipment 0.5m simultaneously;
2) vacuumize
After equipment installs, first open the first shutoff valve, the second shutoff valve and the 3rd shutoff valve, then start vacuum pump, stainless steel tube pipeline and energy disperser are vacuumized, until vacuum indicator no longer changes;
3) leak check
After waiting to vacuumize, first close the 3rd shutoff valve, then stop vacuum pump, and keep 4 ~ 8min, observe vacuum indicator and whether change, if vacuum indicator is motionless, namely represent that the sealing of each connecting line is intact; If vacuum indicator declines, then check the connection of each pipeline, after pending, again vacuumize, until each line seal is intact;
4) oiling
Property to be sealed is closed the second shutoff valve, is opened the 4th shutoff valve, by the vacuum of energy disperser inside, from the first fuel tank, suck fluid, until pasta no longer changes after checking;
5) tapping
After oiling completes, close the first shutoff valve, the 4th shutoff valve, and the first fuel tank, energy disperser, vacuum pump and vacuum indicator are removed; Open the 5th shutoff valve again, the hydraulic oil in each pipeline is flow back in the second fuel tank by the 5th shutoff valve.
6. one according to claim 5 vacuumizes correction oil injection method, it is characterized in that, for ensureing to reduce the amount of air be mixed in fluid in energy disperser as far as possible, is P at vacuum pump air pressure
pump, be V to cavity volume
chamberenergy disperser carry out oiling, then remain in the volume of air V of energy disperser inner chamber after oiling
chamber 2calculate by Boyle law, its formula is:
, in formula: V
pipefor connecting the stainless steel tube volume between energy disperser and the first fuel tank, P
0for bar pressure,
be the pressure that the diff-H of the first fuel tank liquid level and energy disperser liquid level causes; Entrained air amount is pressed
calculate.
7. one according to claim 6 vacuumizes correction oil injection method, it is characterized in that, if ignore
impact, vacuum pump reaches the pressure of 5Pa, to cavity volume V
chamberfor 690cm
3energy disperser carry out oiling, after oiling, the volume of entrained air is:
, entrained air volume accounts for 0.00551% of cumulative volume.
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| CN201510464879.XA CN105036049A (en) | 2015-08-03 | 2015-08-03 | Vacuumizing oil injection device |
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| CN201510464879.XA CN105036049A (en) | 2015-08-03 | 2015-08-03 | Vacuumizing oil injection device |
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Cited By (7)
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| CN105489329A (en) * | 2015-12-18 | 2016-04-13 | 中核核电运行管理有限公司 | Vacuum-pumping and oil-filling device |
| CN106015895A (en) * | 2016-06-28 | 2016-10-12 | 河北工业大学 | Oiling device special for deep-sea oil pressure compensation device |
| CN106523181A (en) * | 2016-12-28 | 2017-03-22 | 宁波华斯特林电机制造有限公司 | Inert gas output device for Stirling motor and method of inert gas output device |
| CN109630852A (en) * | 2018-11-22 | 2019-04-16 | 宁波奥克斯电气股份有限公司 | A kind of air conditioning pipe system and correction oil injection method |
| CN113413516A (en) * | 2021-06-24 | 2021-09-21 | 江苏铂可医疗科技有限公司 | Needleless injector oil filling device and oil filling method thereof |
| CN114121427A (en) * | 2021-10-29 | 2022-03-01 | 西北核技术研究所 | Two-stage vacuum oil injection system based on gravity pressure difference and application method thereof |
| CN114368723A (en) * | 2021-11-10 | 2022-04-19 | 浙江中控技术股份有限公司 | Quantitative oil filling method for base diaphragm capsule |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489329A (en) * | 2015-12-18 | 2016-04-13 | 中核核电运行管理有限公司 | Vacuum-pumping and oil-filling device |
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| CN106015895A (en) * | 2016-06-28 | 2016-10-12 | 河北工业大学 | Oiling device special for deep-sea oil pressure compensation device |
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| CN106523181A (en) * | 2016-12-28 | 2017-03-22 | 宁波华斯特林电机制造有限公司 | Inert gas output device for Stirling motor and method of inert gas output device |
| CN106523181B (en) * | 2016-12-28 | 2019-06-18 | 宁波华斯特林电机制造有限公司 | A kind of the inert gas output device and its method of Stirling motor |
| CN109630852A (en) * | 2018-11-22 | 2019-04-16 | 宁波奥克斯电气股份有限公司 | A kind of air conditioning pipe system and correction oil injection method |
| CN109630852B (en) * | 2018-11-22 | 2021-01-12 | 宁波奥克斯电气股份有限公司 | Air conditioner pipeline system and oil injection method |
| CN113413516A (en) * | 2021-06-24 | 2021-09-21 | 江苏铂可医疗科技有限公司 | Needleless injector oil filling device and oil filling method thereof |
| CN114121427A (en) * | 2021-10-29 | 2022-03-01 | 西北核技术研究所 | Two-stage vacuum oil injection system based on gravity pressure difference and application method thereof |
| CN114368723A (en) * | 2021-11-10 | 2022-04-19 | 浙江中控技术股份有限公司 | Quantitative oil filling method for base diaphragm capsule |
| CN114368723B (en) * | 2021-11-10 | 2023-12-22 | 浙江中控技术股份有限公司 | Quantitative oil filling method for base diaphragm capsule |
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Application publication date: 20151111 |