CN1975183A - Pressure oil box for removing gas in hydraulic oil liquid - Google Patents
Pressure oil box for removing gas in hydraulic oil liquid Download PDFInfo
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- CN1975183A CN1975183A CN 200610155396 CN200610155396A CN1975183A CN 1975183 A CN1975183 A CN 1975183A CN 200610155396 CN200610155396 CN 200610155396 CN 200610155396 A CN200610155396 A CN 200610155396A CN 1975183 A CN1975183 A CN 1975183A
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- pressure oil
- oil tank
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Abstract
There is disclosed a pressure oil box capable of removing gas from the hydraulic oil liquid, in which an inert gas filling ring is mounted in the lower part of the pressure oil box and connected with the inert gas source. A vacuum-pumping device is connected with the top of the pressure oil box via a vacuum pump through first and second switch valves. An alternating pressure exerting device consists of a gasbag, a vacuum pump, first, third and fourth switch valves and an air filter. The vacuum pump is connected with the gasbag mounted in the pressure oil box through the first and third switch valves and the air filter is connected with the gasbag mounted in the pressure oil box through the fourth and third switch valves. In the lower part of the pressure oil box is opened an oil mouth connected with the hydraulic pump.
Description
Technical field
The present invention relates to the fuel tank of hydraulic system, specifically relate to a kind of pressure oil tank of removing gas in the hydraulic oil liquid.
Background technique
Under the normal temperature and pressure, sneak in the hydraulic oil liquid and the air quantity of dissolving is about 10%.Be dissolved with the fluid of air, its Young's modulus descends significantly, has weakened the rigidity of hydraulic system.In elements such as hydrovalve and oil hydraulic pump, owing to reasons such as low pressure and strong shearings, the dissolved gas in the fluid is separated out the generation air pocket, causes the hydraulic element cavitation erosion, and produces noise.The existence of air pocket also makes the flow characteristic of fluid become complicated.
In order to reduce the air content of hydraulic oil liquid, can vacuumize processing to hydraulic oil container, the dissolved gas in the hydraulic oil liquid is separated out.But this method can not make some small bubbles separate out.In addition, after fuel tank vacuumized, the inlet pressure of oil hydraulic pump was lower than the minimum inlet pressure that pump allows, and it is empty to cause oil hydraulic pump to inhale.
Summary of the invention
The purpose of this invention is to provide a kind of pressure oil tank of removing gas in the hydraulic oil liquid, can remove the bubble in the hydraulic oil liquid, can prevent that again the oil hydraulic pump suction is empty.
The technical solution adopted for the present invention to solve the technical problems is:
Scheme 1:
Comprise pressure oil tank, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring; Inert gas charges into the bottom that ring is installed in pressure oil tank, is connected with inert gas source; Vacuum pumping device is linked to each other with the pressure oil tank top with the second switch valve through first switch valve by vacuum pump; The alternating pressure bringing device is made up of air bag, vacuum pump, first switch valve, the 3rd switch valve, the 4th switch valve and air-strainer, vacuum pump links to each other with air bag in being installed in pressure oil tank by first switch valve and the 3rd switch valve, and air-strainer links to each other with air bag in being installed in pressure oil tank by the 4th switch valve and the 3rd switch valve; The bottom of pressure oil tank has the hydraulic fluid port that is connected with oil hydraulic pump.
Scheme 2:
Comprise pressure oil tank, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring; Inert gas charges into the bottom that ring is installed in pressure oil tank, is connected with inert gas source; Vacuum pumping device is linked to each other with the fuel tank top with the second switch valve through first switch valve by vacuum pump, and air-strainer links to each other with the pressure oil tank top with the second switch valve through the 4th switch valve; The alternating pressure bringing device is single rod piston cylinder, and the rodless cavity of single rod piston cylinder links to each other with fluid in the pressure oil tank, and the rod chamber pore of piston cylinder links to each other with atmosphere or links to each other with vacuum pump with first switch valve through the 3rd switch valve; The bottom of pressure oil tank has the hydraulic fluid port that is connected with oil hydraulic pump.
More than the switch valve described in two kinds of schemes be stop valve or electromagnetism two logical switch valves.
The beneficial effect that the present invention has is: can effectively remove the gas in the hydraulic oil liquid; Owing to adopted inert gas to charge into ring, the bubble of having accelerated to be adsorbed on the pressure oil tank wall is got rid of speed; The alternating pressure bringing device can effectively be got rid of the micro-bubble in the hydraulic oil liquid; During hydraulic pump works, pressure and external atmosphere pressure in the pressure oil tank adapt, and prevent that effectively the oil hydraulic pump suction is empty.
Description of drawings
Fig. 1 is the pressure oil tank structural drawing of the air bag among first embodiment when shrinking;
Fig. 2 is that inert gas charges into ring;
Pressure oil tank structural drawing when Fig. 3 is a airbag inflation among first embodiment;
Pressure oil tank structural drawing when Fig. 4 is second airbag inflation among the embodiment;
Fig. 5 is the pressure oil tank structural drawing of the 3rd the employing electromagnetism two logical switch valves among the embodiment;
Fig. 6 is the pressure oil tank structural drawing of the 4th the employing piston cylinder among the embodiment;
Fig. 7 is the pressure oil tank structural drawing of the 5th the employing piston cylinder among the embodiment;
Among the figure: 1. leg seat, 2. inert gas source, 3. inert gas charges into ring, 4. pressure oil tank, 5,5 '. air bag, 6,7,11,12. stop valve, 8. air-strainer, 9. ventilating hole, 10. vacuum pump, 13. manholes, 14. oil hydraulic pump, 15,16,17,18. electromagnetism, two logical switch valves, 19. rodless cavities, 20. piston, 21. single rod piston cylinders, 22. rod chambers, 23. pore, 24. handles, 25. relief openings.
Embodiment
The invention will be further described by drawings and Examples.
First embodiment of the present invention such as Fig. 1, Fig. 2, shown in Figure 3, the present invention includes pressure oil tank 4, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring 3; Inert gas charges into the bottom that ring 3 is installed in pressure oil tank 4, is connected with inert gas source 2; Vacuum pumping device is linked to each other with pressure oil tank 4 tops with second stop valve 6 through first stop valve 11 by vacuum pump 10; The alternating pressure bringing device is made up of air bag 5, vacuum pump 10, first stop valve 11, the 3rd stop valve 12, the 4th stop valve 7 and air-strainer 8, vacuum pump 10 links to each other with the air bag 5 that is installed in pressure oil tank 4 tops with the 3rd stop valve 12 by first stop valve 11, and air-strainer 8 links to each other with the air bag 5 that is installed in pressure oil tank 4 tops with the 3rd stop valve 3 by the 4th stop valve 7; The bottom of pressure oil tank 4 has the hydraulic fluid port that is connected with oil hydraulic pump 14.
As shown in Figure 1, pressure oil tank 4 is supported by leg seat 1, and manhole 13 is used for the maintenance of pressure oil tank 4; During original state, stop valve 6 and stop valve 7 opened, and pressure oil tank 4 communicates with atmosphere by air-strainer 8, closes stop valve 11 and stop valve 12 after air bag 5 vacuumizes, the volume of the spatial volume above the oil level in the fuel tank after less than air bag 5 complete expansions; Close stop valve 7, open stop valve 11, opening 10 pairs of pressure oil tanks of vacuum pump vacuumizes, gas in the hydraulic oil liquid is separated out under negative pressure, charge in the ring 3 to inert gas simultaneously and charge into small amounts of inert gas continuously at inert gas source 2 places, inert gas enters fluid by exhaust port 25, strengthens the bubble at fuel tank wall place and gets rid of speed; Close inert gas source 2, when the variation in pressure in the pressure oil tank 4 is very little, close stop valve 6 and stop valve 11, open stop valve 7 and stop valve 12, air bag 5 is inflation under atmospheric effect, be full of whole pressure oil tank 4 until fluid, as shown in Figure 3, the oil liquid pressure in the pressure oil tank 4 equals external atmospheric pressure at this moment; Close stop valve 7, open stop valve 11, air bag 5 is vacuumized, air bag 5 shrinks under the effect of power such as fluid buoyancy, oil liquid pressure is reduced to vacuum pressure, alternately open stop valve 7 and stop valve 11 so repeatedly, the pressure of pressure oil tank 4 inner fluids alternate repeatedly between barometric pressure and vacuum pressure is separated out the micro-bubble in the fluid; Close stop valve 12 after air bag 5 vacuumizes, open stop valve 6 and stop valve 11, vacuum pump 10 cuts out stop valve 6, stop valve 11 and vacuum pump after the gas of separating out is extracted out, finishes the eliminating of gas in the hydraulic oil; Open stop valve 7 and stop valve 12, air bag 5 expands, and the oil liquid pressure in the pressure oil tank 4 reverts to atmospheric pressure, and opening oil hydraulic pump 14 is the oil hydraulic circuit fuel feeding.After hydraulic work system finishes, open stop valve 6, the fluid in the pressure oil tank 4 communicates with ventilating hole 9 by air-strainer 8.
Second embodiment of the present invention as shown in Figure 4, air bag 5 ' is installed in the bottom of pressure oil tank, when the fluid in the pressure oil tank 4 being applied alternating pressure by air bag 5 ', fluid in the pressure oil tank 4 produces moving up and down by a relatively large margin, play the effect of stirring fluid, improved the removal effect of gas in the fluid.
The 3rd embodiment of the present invention as shown in Figure 5, switch valve all adopts the logical switch valves 15,16,17 and 18 of electromagnetism two, during the logical switch valve no electric circuit of electromagnetism two, valve cuts out, during the logical switch valves energising of electromagnetism two, opening of valves has been realized the automatically controlled of alternating pressure.
The 4th embodiment of the present invention as shown in Figure 6, comprise pressure oil tank 4, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring 3; Inert gas charges into the bottom that ring 3 is installed in pressure oil tank 4, is connected with inert gas source 2; Vacuum pumping device is linked to each other with pressure oil tank 4 tops with second stop valve 6 through first stop valve 11 by vacuum pump, and air-strainer 8 links to each other with the pressure oil tank top with second stop valve 6 through the 4th stop valve 7; The alternating pressure bringing device is single rod piston cylinder 21, and the rodless cavity 19 of single rod piston cylinder 21 links to each other with fluid in the pressure oil tank 4, and the pore 23 of the rod chamber 22 of piston cylinder 21 links to each other with atmosphere; Design has handle 24 on the piston 20 of piston cylinder 21; The bottom of pressure oil tank 4 has the hydraulic fluid port that is connected with oil hydraulic pump 14.
As shown in Figure 6, pressure oil tank 4 is supported by leg seat 1, and manhole 13 is used for the maintenance of pressure oil tank 4; During original state, stop valve 6 and stop valve 7 are opened, and pressure oil tank 4 communicates with atmosphere by air-strainer 8, and piston 20 is pulled out the position of back locking handle 24 fully; Close stop valve 7, open stop valve 11, opening 10 pairs of pressure oil tanks of vacuum pump vacuumizes, gas in the hydraulic oil liquid is separated out under negative pressure, charge in the ring 3 to inert gas simultaneously and charge into small amounts of inert gas continuously at inert gas source 2 places, inert gas enters fluid by exhaust port 25, strengthens the bubble at fuel tank wall place and gets rid of speed; Close inert gas source 2, when the variation in pressure in the pressure oil tank 4 is very little, close stop valve 6 and stop valve 11, remove the locking of handle 24, piston 20 pushes pressure oil tank 4 with the fluid in the piston cylinder 21 under the thrust of barometric pressure and handle 24, be full of whole pressure oil tank 4 until fluid, the oil liquid pressure in the pressure oil tank 4 equals external atmospheric pressure at this moment; The push-and-pull piston 20 repeatedly, and the pressure of pressure oil tank 4 inner fluids alternate repeatedly between barometric pressure and vacuum pressure is separated out the micro-bubble in the fluid; Piston 20 is pulled out the position of back locking handle 24, opens stop valve 6 and stop valve 11, and vacuum pump 10 cuts out stop valve 6, stop valve 11 and vacuum pump after the gas of separating out is extracted out, finishes the eliminating of gas in the hydraulic oil; Remove the locking of handle 24, the oil liquid pressure in the pressure oil tank 4 reverts to atmospheric pressure, and opening oil hydraulic pump 14 is the oil hydraulic circuit fuel feeding.After hydraulic work system finishes, open stop valve 6 and stop valve 7, the fluid in the pressure oil tank 4 communicates with ventilating hole 9 by air-strainer 8.
The 5th embodiment of the present invention as shown in Figure 7, the rodless cavity of piston cylinder 21 links to each other with vacuum pump 10 with first stop valve 11 through the 3rd stop valve 12; To stop valve 6,7,11,12 take with first embodiment in identical control sequence, the push-pull effort that 24 need of the handle of piston 20 are very little or do not need push-pull effort to apply alternating pressure to fluid.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (4)
1. a pressure oil tank of removing gas in the hydraulic oil liquid is characterized in that, comprise pressure oil tank, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring; Inert gas charges into the bottom that ring is installed in pressure oil tank, is connected with inert gas source; Vacuum pumping device is linked to each other with the pressure oil tank top with the second switch valve through first switch valve by vacuum pump; The alternating pressure bringing device is made up of air bag, vacuum pump, first switch valve, the 3rd switch valve, the 4th switch valve and air-strainer, vacuum pump links to each other with air bag in being installed in pressure oil tank by first switch valve and the 3rd switch valve, and air-strainer links to each other with air bag in being installed in pressure oil tank by the 4th switch valve and the 3rd switch valve; The bottom of pressure oil tank has the hydraulic fluid port that is connected with oil hydraulic pump.
2. a kind of pressure oil tank of removing gas in the hydraulic oil liquid according to claim 1 is characterized in that, described switch valve is stop valve or electromagnetism two logical switch valves.
3. a pressure oil tank of removing gas in the hydraulic oil liquid is characterized in that, comprise pressure oil tank, vacuum pumping device, alternating pressure bringing device and above be evenly equipped with exhaust hole inert gas charge into ring; Inert gas charges into the bottom that ring is installed in pressure oil tank, is connected with inert gas source; Vacuum pumping device is linked to each other with the fuel tank top with the second switch valve through first switch valve by vacuum pump, and air-strainer links to each other with the pressure oil tank top with the second switch valve through the 4th switch valve; The alternating pressure bringing device is single rod piston cylinder, and the rodless cavity of single rod piston cylinder links to each other with fluid in the pressure oil tank, and the rod chamber pore of piston cylinder links to each other with atmosphere or links to each other with vacuum pump with first switch valve through the 3rd switch valve; The bottom of pressure oil tank has the hydraulic fluid port that is connected with oil hydraulic pump.
4. a kind of pressure oil tank of removing gas in the hydraulic oil liquid according to claim 3 is characterized in that, described switch valve is stop valve or electromagnetism two logical switch valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101553962A CN100497960C (en) | 2006-12-22 | 2006-12-22 | Pressure oil box for removing gas in hydraulic oil liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101553962A CN100497960C (en) | 2006-12-22 | 2006-12-22 | Pressure oil box for removing gas in hydraulic oil liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1975183A true CN1975183A (en) | 2007-06-06 |
| CN100497960C CN100497960C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101553962A Expired - Fee Related CN100497960C (en) | 2006-12-22 | 2006-12-22 | Pressure oil box for removing gas in hydraulic oil liquid |
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| CN (1) | CN100497960C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072210A (en) * | 2010-11-15 | 2011-05-25 | 中国船舶重工集团公司第七一○研究所 | Anti-surge oil tank |
| CN102767544A (en) * | 2012-06-30 | 2012-11-07 | 瑞安市阀门一厂 | Totally closed hydraulic oil tank |
| CN103293043A (en) * | 2013-06-27 | 2013-09-11 | 西南石油大学 | Coal bed gas-logging degassing device and degassing method |
| CN105240347A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Overhaul method capable of avoiding oil drainage of hydraulic oil tank |
| CN106438589A (en) * | 2016-12-06 | 2017-02-22 | 中国船舶重工集团公司第七0研究所 | Gas exhaust device used for closed type hydraulic system |
| CN109162971A (en) * | 2018-11-12 | 2019-01-08 | 燕山大学 | Constant-pressure pressure fuel tank and its control method |
| CN109854571A (en) * | 2019-04-10 | 2019-06-07 | 贵州电网有限责任公司 | A kind of parallel-connection type hydraulic press mechanism oil supply system and method |
| CN109915440A (en) * | 2019-04-09 | 2019-06-21 | 贵州电网有限责任公司 | A kind of the hydraulic oil off gas system and method for hydraulic mechanism |
| CN111561494A (en) * | 2020-05-13 | 2020-08-21 | 中国人民解放军空军勤务学院 | Hydraulic system oil dewatering and degassing device |
| CN112963392A (en) * | 2021-01-26 | 2021-06-15 | 中国科学院国家天文台 | Constant-volume and constant-pressure inflating device and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016053151A1 (en) | 2014-10-01 | 2016-04-07 | Volvo Construction Equipment Ab | A hydraulic fluid tank arrangement |
-
2006
- 2006-12-22 CN CNB2006101553962A patent/CN100497960C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072210A (en) * | 2010-11-15 | 2011-05-25 | 中国船舶重工集团公司第七一○研究所 | Anti-surge oil tank |
| CN102767544A (en) * | 2012-06-30 | 2012-11-07 | 瑞安市阀门一厂 | Totally closed hydraulic oil tank |
| CN103293043A (en) * | 2013-06-27 | 2013-09-11 | 西南石油大学 | Coal bed gas-logging degassing device and degassing method |
| CN105240347A (en) * | 2015-11-05 | 2016-01-13 | 鞍钢集团矿业公司 | Overhaul method capable of avoiding oil drainage of hydraulic oil tank |
| CN106438589B (en) * | 2016-12-06 | 2019-03-08 | 中国船舶重工集团公司第七一0研究所 | A kind of exhaust apparatus for closed type hydraulic system |
| CN106438589A (en) * | 2016-12-06 | 2017-02-22 | 中国船舶重工集团公司第七0研究所 | Gas exhaust device used for closed type hydraulic system |
| CN109162971A (en) * | 2018-11-12 | 2019-01-08 | 燕山大学 | Constant-pressure pressure fuel tank and its control method |
| CN109915440A (en) * | 2019-04-09 | 2019-06-21 | 贵州电网有限责任公司 | A kind of the hydraulic oil off gas system and method for hydraulic mechanism |
| CN109854571A (en) * | 2019-04-10 | 2019-06-07 | 贵州电网有限责任公司 | A kind of parallel-connection type hydraulic press mechanism oil supply system and method |
| CN109854571B (en) * | 2019-04-10 | 2024-02-23 | 贵州电网有限责任公司 | Parallel hydraulic mechanism oil supply system and method |
| CN111561494A (en) * | 2020-05-13 | 2020-08-21 | 中国人民解放军空军勤务学院 | Hydraulic system oil dewatering and degassing device |
| CN112963392A (en) * | 2021-01-26 | 2021-06-15 | 中国科学院国家天文台 | Constant-volume and constant-pressure inflating device and method |
| CN112963392B (en) * | 2021-01-26 | 2022-11-29 | 中国科学院国家天文台 | Constant-volume and constant-pressure inflating device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100497960C (en) | 2009-06-10 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20090610 Termination date: 20191222 |