CN112403104A - Return oil filtering system for energy accumulator pulse fatigue testing equipment - Google Patents
Return oil filtering system for energy accumulator pulse fatigue testing equipment Download PDFInfo
- Publication number
- CN112403104A CN112403104A CN202011340719.1A CN202011340719A CN112403104A CN 112403104 A CN112403104 A CN 112403104A CN 202011340719 A CN202011340719 A CN 202011340719A CN 112403104 A CN112403104 A CN 112403104A
- Authority
- CN
- China
- Prior art keywords
- oil
- energy accumulator
- accumulator
- fatigue testing
- pulse fatigue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009661 fatigue test Methods 0.000 title claims abstract description 42
- 238000001914 filtration Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 77
- 239000010720 hydraulic oil Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
Abstract
The invention relates to an oil return filtering system for energy accumulator pulse fatigue testing equipment, which comprises an external oil tank (3) containing stored oil, connected with an energy accumulator (1) and the pulse fatigue testing equipment (2) respectively, capable of receiving medium oil flowing out of the energy accumulator (1) and automatically supplementing the medium oil to a power oil tank in the pulse fatigue testing equipment (2) when the oil content of the power oil tank is insufficient. The oil return filtering system improves the testing performance of equipment and reduces the failure rate.
Description
Technical Field
The invention relates to the technical field of pulse fatigue testing of energy accumulators, in particular to an oil return filtering system for pulse fatigue testing equipment of the energy accumulators.
Background
As is well known, the pulse fatigue testing equipment for the energy accumulator comprises a hydraulic power unit, a pulse generating unit, an electric control unit and an oil cooling unit, wherein the hydraulic power unit provides power for a testing workpiece, low-voltage pulse is directly carried out through a servo valve, a booster is driven, namely the pulse generating unit is used for controlling high-voltage pulse, and a pressure signal is fed back to the electric control unit in real time in the control process, so that the position of a valve core of the servo valve is controlled, closed-loop control is formed, and high-precision pulse pressure control is achieved.
In the fatigue test process, the cyclic pressurization-pressure relief of the hydraulic oil between the test equipment and the test workpiece is carried out, and whether the test workpiece leaks or deforms and breaks is observed, so that the fatigue performance of the workpiece is evaluated. However, the volume of a built-in oil tank of the existing pulse fatigue testing equipment is too small (200L), the requirement of a fatigue test of a large-volume workpiece (700L) cannot be met, particle impurities cannot be avoided in the test workpiece, hydraulic oil can be polluted after long-time test circulation, and pipeline blockage is easily caused to cause equipment failure.
Meanwhile, in the fatigue test process of the test workpiece, the maximum internal pressure can reach 80MPa, leakage is easily caused, and the conventional fatigue test equipment cannot monitor the real-time condition of the workpiece, so that the safety problem is easily caused.
Disclosure of Invention
In view of the above problems, the present invention provides an oil return filtering system for an accumulator pulse fatigue testing device, which can provide a large oil amount for the fatigue testing device to meet the testing requirements for large workpieces or multiple workpieces at the same time.
The invention also aims to provide an oil return filtering system for the pulse fatigue testing equipment of the energy accumulator, which can effectively filter impurities in oil to ensure the smoothness and safety of a circulating path.
The invention also aims to provide an oil return filtering system for the pulse fatigue testing equipment of the energy accumulator, which can monitor a testing workpiece to improve the safety.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides an oil return filtration system for energy storage ware pulse fatigue test equipment which characterized in that:
the system comprises an external oil tank which contains storage oil, is respectively connected with the energy accumulator and the pulse fatigue testing equipment, can receive medium oil flowing out of the energy accumulator and automatically supplies oil to the internal power oil tank of the pulse fatigue testing equipment when the oil content of the internal power oil tank is insufficient.
Furthermore, the system comprises a filtering component which is arranged between the energy accumulator and the external oil tank and filters medium oil flowing into the external oil tank.
Further, the energy accumulator is arranged in an inverted mode through the support, and the system further comprises an oil groove which is arranged below the support and used for receiving the medium oil flowing out of the energy accumulator outlet and settling the medium oil;
the external oil tank is connected with the oil groove through the filtering component so as to realize connection between the energy accumulator and the external oil tank.
Furthermore, the system also comprises an oil mist detector which is arranged on the bracket and can monitor whether the energy accumulator leaks oil in the testing process so as to judge whether the testing workpiece assembled on the energy accumulator is abnormal.
Further, the filter assembly comprises an electric gear pump which can pump the medium oil precipitated in the oil tank into an external oil tank, a first filter arranged at the inlet end of the electric gear pump and a second filter arranged at the outlet end of the electric gear pump.
Furthermore, the discharge capacity of the electric gear pump is 40L/min, the working pressure is 10bar, and the volume is 300L.
Further, the first filter has a filtering accuracy of 100 μ and the second filter has a filtering accuracy of 10 μ.
Furthermore, the bracket is L-shaped, and the energy accumulator is arranged on the bracket in an inverted and inclined manner.
Compared with the prior art, the invention has the advantages that:
the oil return filtering system adds an external oil tank for the testing equipment, increases the capacity for the fatigue testing equipment, and meets the requirements of filling liquid for large-size workpieces or simultaneously filling liquid for a plurality of workpieces and testing; the arrangement of the two-stage filter can effectively filter impurities and particles in the oil way and ensure the smoothness of the oil way; the oil mist detector can constantly monitor the leakage problem caused by abnormal sealing of the workpiece in the test process, so that the safety of the test process is improved, and the failure rate is reduced.
Drawings
Fig. 1 is a schematic view of an overall structure of the connection between the return oil filtering system and the testing equipment.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 shows a schematic diagram of an overall structure of the connection between the oil return filtering system and the testing equipment, as shown in the figure, the oil return filtering system for the pulse fatigue testing equipment of the energy accumulator includes an external oil tank 3 which contains storage oil, is connected with the energy accumulator 1 and the pulse fatigue testing equipment 2 respectively, can receive medium oil flowing out of the energy accumulator 1, and can automatically supplement oil for the internal power oil tank of the pulse fatigue testing equipment 2 when the oil content is insufficient, and the fatigue testing equipment 2 is displayed as a fatigue testing machine in the application, so that the capacity of the fatigue testing equipment is increased, and the requirements of charging and testing large-size workpieces or simultaneously multiple workpieces are met. The capacity of the external oil tank is 500L, of course, the external oil tank can be of other capacities, and the specific capacity selection is determined according to actual needs.
The system also comprises a filtering component 4 which is arranged between the energy accumulator 1 and the external oil tank 3 and filters medium oil flowing into the external oil tank 3. In order to facilitate the outflow of medium oil in the energy accumulator, energy accumulator 1 sets up immediately through support fall 5, and simultaneously, this oil return system is still including setting up in support 5 below in order to receive the medium oil that flows out by the export of energy accumulator 1 and carry out the oil groove 6 that deposits to it, and external oil tank 3 then links to each other in order to realize being connected between energy accumulator 1 and the external oil tank 3 through filter assembly 4 and oil groove 6. Specifically, the bracket 5 is in an L shape, the energy accumulator 1 is arranged on the bracket 5 in an inverted and inclined mode, and the bracket 5 is made of 20# carbon steel.
In order to constantly monitor whether the test workpiece is sealed abnormally and causes leakage in the test process so as to improve the safety of the test process, the oil return system further comprises an oil mist detector 7 which is arranged on the support 5 and can monitor whether the energy accumulator 1 in the test process leaks oil so as to judge whether the test workpiece 8 assembled on the energy accumulator 1 is abnormal.
In the present embodiment, the filter assembly 4 includes an electric gear pump 41 for pumping the medium oil settled in the oil tank 6 into the external oil tank 3, and a first filter 42 disposed at an inlet end of the electric gear pump 41 and a second filter 43 disposed at an outlet end of the electric gear pump 41. The electric gear pump has a displacement of 40L/min, a working pressure of 10bar, a power of 0.75KW and a volume of 300L, and the first filter 42 has a filtering accuracy of 100 mu and the second filter 43 has a filtering accuracy of 10 mu.
As shown in fig. 1, when the whole system is tested normally, the hydraulic oil circulation path is marked by a thin black arrow, and after the test is finished, the hydraulic oil return path is marked by a thick black arrow. The specific working principle and the working process are as follows:
the shell of the energy accumulator 1 is reversely placed on the support 5, the shell of the energy accumulator 1 is fixed through the support 5, the outlet of the shell of the energy accumulator 1 faces downwards, medium oil in the shell of the energy accumulator 1 flows into the oil groove 6 to be precipitated, solid particles are filtered through the first filter 42 and the second filter 43 and are recovered into the external oil tank 3 through the electric gear pump 41, and the outlet of the oil return system is connected to a power oil tank (not shown in the figure) of the pulse fatigue testing equipment 2 through a hose. During normal test, the outlets of the energy accumulator 1 and the pulse fatigue test equipment 2 are connected through a hose, oil filling and air exhausting are started, the test is started after the oil filling and the air exhausting are completed, after the test is completed, a hose joint between the outlets of the energy accumulator 1 and the pulse fatigue test equipment 2 is unscrewed, medium oil directly flows back to the oil groove 6 for precipitation, then a button (not shown in the figure) on an oil return filtering system is operated and clicked to start the electric gear pump 41, the oil is filtered and recovered to the external oil tank 3 through the secondary filter, the external oil tank 3 automatically supplements a power oil tank inside the fatigue test equipment 2, and therefore enough hydraulic oil is provided for circular fatigue test.
While embodiments of the invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The utility model provides an oil return filtration system for energy storage ware pulse fatigue test equipment which characterized in that:
the system comprises an external oil tank (3) which contains stored oil, is respectively connected with the energy accumulator (1) and the pulse fatigue testing equipment (2), can receive medium oil flowing out of the energy accumulator (1) and automatically supplies oil to the internal power oil tank of the pulse fatigue testing equipment (2) when the oil content of the internal power oil tank is insufficient.
2. The return oil filtration system for an accumulator pulse fatigue test apparatus of claim 1, wherein:
the system comprises a filtering component (4) which is arranged between the energy accumulator (1) and the external oil tank (3) and filters medium oil flowing into the external oil tank (3).
3. The return oil filtration system for accumulator pulse fatigue testing apparatus of claim 2, wherein:
the energy accumulator (1) is arranged in an inverted mode through the support (5), and the system further comprises an oil groove (6) which is arranged below the support (5) and used for receiving medium oil flowing out of an outlet of the energy accumulator (1) and settling the medium oil;
the external oil tank (3) is connected with the oil groove (6) through the filtering component (4) so as to realize connection between the energy accumulator (1) and the external oil tank (3).
4. The return oil filtration system for accumulator pulse fatigue testing apparatus of claim 3, wherein:
the system also comprises an oil mist detector (7) which is arranged on the bracket (5) and can monitor whether the energy accumulator (1) leaks oil in the testing process so as to judge whether a testing workpiece (8) assembled on the energy accumulator (1) is abnormal.
5. The return oil filtration system for accumulator pulse fatigue testing apparatus of claim 3, wherein:
the filter assembly (4) comprises an electric gear pump (41) which can pump the medium oil precipitated in the oil groove (6) into an external oil tank (3), a first filter (42) arranged at the inlet end of the electric gear pump (41) and a second filter (43) arranged at the outlet end of the electric gear pump (41).
6. The return oil filtration system for accumulator pulse fatigue testing equipment of claim 5, characterized in that:
the discharge capacity of the electric gear pump (41) is 40L/min, the working pressure is 10bar, and the volume is 300L.
7. The return oil filtration system for accumulator pulse fatigue testing equipment of claim 5, characterized in that:
the first filter (42) has a filtration accuracy of 100 mu and the second filter (43) has a filtration accuracy of 10 mu.
8. The return oil filtration system for accumulator pulse fatigue testing apparatus of claim 3, wherein:
the support (5) is L-shaped, and the energy accumulator (1) is arranged on the support (5) in an inverted and inclined mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011340719.1A CN112403104A (en) | 2020-11-25 | 2020-11-25 | Return oil filtering system for energy accumulator pulse fatigue testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011340719.1A CN112403104A (en) | 2020-11-25 | 2020-11-25 | Return oil filtering system for energy accumulator pulse fatigue testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112403104A true CN112403104A (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011340719.1A Pending CN112403104A (en) | 2020-11-25 | 2020-11-25 | Return oil filtering system for energy accumulator pulse fatigue testing equipment |
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| Country | Link |
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| CN (1) | CN112403104A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050103700A1 (en) * | 2003-11-17 | 2005-05-19 | Hiroyasu Shirakawa | Filter device |
| CN201233317Y (en) * | 2008-07-23 | 2009-05-06 | 中国第一汽车集团公司 | Automatic oil return apparatus for cylinder fatigue device test stand |
| CN103133843A (en) * | 2013-03-08 | 2013-06-05 | 中国地质大学（北京） | Lubricating oil automatic purification and circulating feed system for double-roll tester |
| CN203710806U (en) * | 2013-12-20 | 2014-07-16 | 浙江吉利控股集团有限公司 | Oil filtering system for testing transmission |
| CN106640847A (en) * | 2017-03-07 | 2017-05-10 | 合肥通用机械研究院 | Energy accumulator fatigue test device and test method |
| CN108507890A (en) * | 2018-03-21 | 2018-09-07 | 合肥通用机械研究院有限公司 | A kind of pressure vessel and piping corrosion fatigue testing system and test method |
| CN214019654U (en) * | 2020-11-25 | 2021-08-24 | 宁波市特种设备检验研究院 | Return oil filtering system of energy accumulator pulse fatigue testing equipment |
-
2020
- 2020-11-25 CN CN202011340719.1A patent/CN112403104A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050103700A1 (en) * | 2003-11-17 | 2005-05-19 | Hiroyasu Shirakawa | Filter device |
| CN201233317Y (en) * | 2008-07-23 | 2009-05-06 | 中国第一汽车集团公司 | Automatic oil return apparatus for cylinder fatigue device test stand |
| CN103133843A (en) * | 2013-03-08 | 2013-06-05 | 中国地质大学（北京） | Lubricating oil automatic purification and circulating feed system for double-roll tester |
| CN203710806U (en) * | 2013-12-20 | 2014-07-16 | 浙江吉利控股集团有限公司 | Oil filtering system for testing transmission |
| CN106640847A (en) * | 2017-03-07 | 2017-05-10 | 合肥通用机械研究院 | Energy accumulator fatigue test device and test method |
| CN108507890A (en) * | 2018-03-21 | 2018-09-07 | 合肥通用机械研究院有限公司 | A kind of pressure vessel and piping corrosion fatigue testing system and test method |
| CN214019654U (en) * | 2020-11-25 | 2021-08-24 | 宁波市特种设备检验研究院 | Return oil filtering system of energy accumulator pulse fatigue testing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 中国机械工程学会与维修工程分会编著: "《设备管理与维修路线图》", 30 November 2016, pages: 89 - 90 * |
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