CN204008127U - The outer oil system of a kind of permanent dress testing table - Google Patents
The outer oil system of a kind of permanent dress testing table Download PDFInfo
- Publication number
- CN204008127U CN204008127U CN201420358746.5U CN201420358746U CN204008127U CN 204008127 U CN204008127 U CN 204008127U CN 201420358746 U CN201420358746 U CN 201420358746U CN 204008127 U CN204008127 U CN 204008127U
- Authority
- CN
- China
- Prior art keywords
- oil
- stainless steel
- sealing joint
- flexible hose
- quick self
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses the outer oil system of a kind of permanent dress testing table, comprise oil circulation loop, oil tank kinematic train and test loop, wherein, test loop coordinates the mill that carries out successively permanent dress product to inspect and the permanent oil sealing operation that fills interiors of products with described oil circulation loop, oil tank kinematic train is for coordinating with oil circulation loop, test loop successively, thus the oiling operation of completion system internal work liquid circulating filtration and permanent dress product; The designed outer oil system of a kind of permanent dress testing table of the utility model can be in lowering the temperature to perseverance dress product, the parameters such as real-time monitoring temperature, fluid flow, working pressure, and can test the perseverance dress product of different model.
Description
Technical field
The utility model relates to the outer oil system of a kind of permanent dress testing table.
Background technology
Outer heat radiation lubricating oil hydraulic system, be the important component part of combination driving power generating device test, in system, exist and run, emit, drip phenomenon, the selection of pressure, temperature, flowmeter sensor collection point, the pipe of system pipeline hinders and vibrations, all can directly affect the data correctness of product testing.
Due to the defect of existing outer lubricating oil experiment system design and manufacture, there is deviation with the data of combination driving power generating device production producer in the data of product testing, affect outfield product flight training, outer oil system itself exists the phenomenon of leakage of oil, the reasonable trend of the selection suitability of pressure and temperature acquisition point, the correct installation of flow sensor and pipe system etc., it is all the factor can not be ignored, the layout of pipe system is improper, and the dismounting that also oil supply filter often needs, the collection of oil sample, the M R of system are made troubles.
Meanwhile, in the prior art, manufacturer, in the time of test different model product, for the difference of product fluid, often need to complete on two testing equipments, or specific aim changes the oil plant of fuel tank, not only uneconomical but also labor intensive and time.
How to overcome above deficiency, producer learns from other's strong points to offset one's weaknesses with main frame, and the outer oil system of perseverance dress testing table of designing the break-in, check test and the product oil sealing that simultaneously meet the permanent dress of YH-30A, YH-60, YH-60A and Г П-21 4 type product is technical problem to be solved in the utility model.
In prior art, manufacturer, in the time of test different model product, for the difference of product fluid, often need to complete on two testing equipments, or specific aim changes the oil plant of fuel tank, not only uneconomical but also labor intensive and time; And in the utility model, be provided with two oil tanks, and according to the difference of test fluid, only need the stainless steel tee ball valve of operation fuel-tank outlet, just can meet the test of many types of permanent dress product;
In the utility model, pipe system is integrated, and conduit under fluid pressure layout is clear, and trend rationally, easily readable, is convenient to analyze and troubleshooting; Hydraulic filter needs often dismounting and cleans, so be arranged on the place of system most convenient operation; Various sensors need periodic check, are also arranged in the place of easy handling, in a word, any one part or any one element in maintenance system, what all can show is handy;
The outer oil system of aforesaid permanent dress testing table, the material of first, second oil tank is stainless steel.
The beneficial effects of the utility model are:
The outer oil system of perseverance dress testing table that the utility model is designed and application process thereof can be in lowering the temperature to perseverance dress product, the parameters such as real-time monitoring temperature, fluid flow, working pressure, and can test the perseverance dress product of different model, after abundant experimental verification, its overall performance reaches following standard:
Product oil return flow: 0～70L/min
Intake pressure: 0～1.6Mpa
Top hole pressure: 0～2.5Mpa
Oiling pressure: 0～4.0Mpa
Controlled pressure: 0～2.5Mpa
Housing pressure :-0.1～0.5Mpa
Inlet temperature: 0～200 DEG C
Control accuracy: ± 5 DEG C
Outlet temperature: 0～200 DEG C
Temperature measurement accuracy: ± 1%
Pressure measurement accuracy: ± 0.5%
Flow measurement precision: ± 1%.
Utility model content
Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, provide a kind of permanent dress testing table outer oil system, when perseverance dress product is lowered the temperature, the parameters such as real-time monitoring temperature, fluid flow, working pressure, and can test the perseverance dress product of different model.
In order to solve above technical matters, the utility model provides a kind of permanent dress testing table outer oil system, comprise oil circulation loop, oil tank kinematic train and test loop, wherein, test loop coordinates the mill that carries out successively permanent dress product to inspect and the permanent oil sealing operation that fills interiors of products with described oil circulation loop, oil tank kinematic train is for coordinating with oil circulation loop, test loop successively, thus the oiling operation of completion system internal work liquid circulating filtration and permanent dress product.
The technical scheme that the utility model further limits is:
Further, the outer oil system of aforesaid permanent dress testing table, oil circulation loop comprise along its fluid transmission direction connect successively arrange the first Quick self-sealing joint, the first stainless steel flexible hose, the first stainless steel tee ball valve, 3 μ aero oil filters, Cylindrical Gear Meter, the second stainless steel flexible hose and the second Quick self-sealing joint, between the first Quick self-sealing joint and the first stainless steel flexible hose, between the second stainless steel flexible hose and the second Quick self-sealing joint, be also provided with first respectively, the second pressure transducer, the first pressure transducer is connected with the first Quick self-sealing joint and the first stainless steel flexible hose mutual conduction by the first reducer tee, the second pressure transducer is connected with the second Quick self-sealing joint and the second stainless steel flexible hose mutual conduction by the second reducer tee,
The oil inlet end of test loop is connected with the first stainless steel tee ball valve, its oil outlet end is connected between 3 μ aero oil filters and Cylindrical Gear Meter, oil outlet end, between 3 μ aero oil filters and Cylindrical Gear Meter, be connected by the first equal tee mutual conduction, between the oil inlet end of test loop and oil outlet end, be divided into two branch roads, every its fluid transmission direction of curb is connected successively one 10 filter of μ aero oil and stainless steel shell and tube fluid refrigeratorys is set, first, the 2 10 μ aero oil filter is with first, the second stainless steel shell and tube fluid refrigeratory, first, the common bi-bit bi-pass electromagnetic water valve that connects of cooling duct of the second stainless steel shell and tube fluid refrigeratory, the oil inlet end of test loop and oil outlet end place are also respectively arranged with first, the second temperature sensor,
Oil tank kinematic train comprises first, the second oil tank, first, the output terminal of the second oil tank respectively by the second stainless steel tee ball valve along the vane pump gearing of connecting successively of fluid transmission direction in oil tank kinematic train, one retaining valve and the filter of the 3 10 μ aero oil, the outlet of the 3 10 μ aero oil filter is connected with one end mutual conduction of the 3rd Quick self-sealing joint and screw switch respectively by the second equal tee, between the 3rd Quick self-sealing joint and the second equal tee, be also provided with a rapid-acting coupling and excessively connect mouth, the other end of screw switch is connected between the first stainless steel flexible hose and the first stainless steel tee ball valve and screw switch, between the first stainless steel flexible hose and the first stainless steel tee ball valve, interconnect by the 3rd reducer tee, on the first oil tank, also conducting is provided with the 4th Quick self-sealing joint and the first stainless steel ball valve respectively, and on the second oil tank, also conducting is provided with the 5th Quick self-sealing joint and the second stainless steel ball valve respectively,
Between Cylindrical Gear Meter and the second stainless steel flexible hose, be also provided with an oil drain cock, oil drain cock is connected with the second stainless steel flexible hose mutual conduction with Cylindrical Gear Meter by the 4th reducer tee;
Technique effect: the lubricating oil hydraulic system of dispelling the heat outward, it is the important component part of combination driving power generating device test, in system, exist and run, emit, drip phenomenon, pressure, temperature, the selection of flowmeter sensor collection point, pipe resistance and the vibrations thereof of system pipeline, capital directly affects the data correctness of product testing, in the utility model, two 10 μ aero oils are filtered, two stainless steel shell and tube fluid refrigeratorys and two temperature sensors are installed concentratedly on an integrated package, and connect with Cylindrical Gear Meter, such layout just makes system pipeline seem compact and attractive in appearance, rigidity is strong, stability is all right, can reduce the high length of pipeline, effectively stop the race of fluid, emit, drip phenomenon, guarantee the good operation of outer heat radiation lubricating oil hydraulic system,
Brief description of the drawings
Fig. 1 is the structural representation of the designed outer oil system of perseverance dress testing table of the utility model.
Embodiment
embodiment 1
As shown in Figure 1, the outer oil system of the permanent dress of one testing table that the present embodiment provides, comprise oil circulation loop, oil tank kinematic train and test loop, wherein, test loop coordinates the mill that carries out successively permanent dress product to inspect and the permanent oil sealing operation that fills interiors of products with described oil circulation loop, oil tank kinematic train is for coordinating with oil circulation loop, test loop successively, thus the oiling operation of completion system internal work liquid circulating filtration and permanent dress product;
Oil circulation loop comprise along its fluid transmission direction connect successively arrange the first Quick self-sealing joint 1, the first stainless steel flexible hose 5, the first stainless steel tee ball valve 9, 3 μ aero oil filters 10, Cylindrical Gear Meter 11, the second stainless steel flexible hose 6 and the second Quick self-sealing joint 2, between the first Quick self-sealing joint 1 and the first stainless steel flexible hose 5, between the second stainless steel flexible hose 6 and the second Quick self-sealing joint 2, be also provided with first respectively, the second pressure transducer 7, 8, the first pressure transducer 7 is connected with the first Quick self-sealing joint 1 and the first stainless steel flexible hose 5 mutual conduction by the first reducer tee 3, the second pressure transducer 8 is connected with the second Quick self-sealing joint 2 and the second stainless steel flexible hose 6 mutual conduction by the second reducer tee 4,
The oil inlet end of test loop is connected with the first stainless steel tee ball valve 9, its oil outlet end is connected between 3 μ aero oil filters 10 and Cylindrical Gear Meter 11, oil outlet end, between 3 μ aero oil filters 10 and Cylindrical Gear Meter 11, be connected by the first equal tee 36 mutual conduction, between the oil inlet end of test loop and oil outlet end, be divided into two branch roads, every its fluid transmission direction of curb is connected successively one 10 filter of μ aero oil and stainless steel shell and tube fluid refrigeratorys is set, first, the 2 10 μ aero oil filter 13, 14 and first, the second stainless steel shell and tube fluid refrigeratory 15, 16, first, the second stainless steel shell and tube fluid refrigeratory 15, 16 the common bi-bit bi-pass electromagnetic water valve 17 that connects of cooling duct, the oil inlet end of test loop and oil outlet end place are also respectively arranged with first, the second temperature sensor 18, 19,
Oil tank kinematic train comprises first, the second oil tank 20, 21, first, the second oil tank 20, 21 output terminal respectively by the second stainless steel tee ball valve 22 along the vane pump gearing 23 of connecting successively of fluid transmission direction in oil tank kinematic train, one retaining valve the 24 and the 3 10 μ aero oil filter 25, the outlet of the 3 10 μ aero oil filter 25 is connected with one end mutual conduction of the 3rd Quick self-sealing joint 27 and screw switch 28 respectively by the second equal tee 26, between the 3rd Quick self-sealing joint 27 and the second equal tee 26, be also provided with a rapid-acting coupling and excessively connect mouth 29, the other end of screw switch 28 is connected between the first stainless steel flexible hose 5 and the first stainless steel tee ball valve 9 and screw switch 28, between the first stainless steel flexible hose 5 and the first stainless steel tee ball valve 9, interconnect by the 3rd reducer tee 12, on the first oil tank 20, also conducting is also provided with on the 4th Quick self-sealing joint 30 and the first stainless steel ball valve 32, the second oil tanks 21 conducting respectively and is provided with the 5th Quick self-sealing joint 31 and the second stainless steel ball valve 33 respectively,
Between Cylindrical Gear Meter 11 and the second stainless steel flexible hose 6, be also provided with an oil drain cock 34, oil drain cock 34 is connected with the second stainless steel flexible hose 6 mutual conduction with Cylindrical Gear Meter 11 by the 4th reducer tee 35.
The oil sealing that the outer oil system of perseverance dress testing table that the present embodiment provides can be applied to permanent dress interiors of products operates, the mill of permanent dress product inspects and the oiling of permanent dress product operates, and concrete steps are as follows:
The mill of permanent dress product is inspected:
According to the type of permanent dress product to be tested, pull the second stainless steel ball valve and the first oil tank or the second oil tank conducting, screw switch is closed, the first stainless steel tee ball valve is pulled to the position to test loop, only with the oil inlet end conducting of the 3rd reducer tee and test loop, the oil-out that perseverance is filled to product is connected respectively first with oil inlet end, the second Quick self-sealing joint, after the operation of permanent dress product, fluid is successively through the first pressure transducer, the first stainless steel flexible hose, the first temperature sensor, be arranged in parallel first, the 2 10 μ aero oil filter, be arranged in parallel first, the second stainless steel shell and tube fluid refrigeratory, the second temperature sensor, Cylindrical Gear Meter, the second stainless steel flexible hose, the second pressure transducer and the second Quick self-sealing joint are got back to the oil-in of permanent dress product, thereby complete fluid in a closed cycle that is filled interiors of products by test perseverance, in test, there is the fluid of certain pressure and certain flow, perseverance is filled to the heat producing in product and take first to, in the second stainless steel shell and tube fluid refrigeratory, by the current of bi-bit bi-pass electromagnetic water valve control, heat is taken away again, thereby reach and control permanent dress product and whole system temperature by the intermittent break-make of bi-bit bi-pass electromagnetic water valve,
The oil sealing operation of permanent dress product:
After the mill of permanent dress product has been inspected, continue to keep screw switch to close, the first stainless steel tee ball valve is pulled to the position in oil circulation loop, only filter conducting with the 3rd reducer tee and 3 μ aero oils, after the operation of permanent dress product, fluid is successively through the first pressure transducer, the first stainless steel flexible hose, 3 μ aero oil filter conductings, Cylindrical Gear Meter, the second stainless steel flexible hose, the second pressure transducer and and the second Quick self-sealing joint get back to the oil-in of permanent dress product, thereby improving working fluid solid pollution degree makes it be not less than GJB420-1987, 6/A level, reach the permanent object that fills interiors of products oil sealing with this,
Internal system working fluid circulating filtration:
By first, the second Quick self-sealing joint takes off from perseverance dress product, separately gets two stainless steel flexible hoses, and one for by first, the 3rd Quick self-sealing joint conducting connects, another root is connected the second Quick self-sealing joint with the 4th or the 5th Quick self-sealing joint conducting, continue to keep screw switch to close and the first stainless steel tee ball valve is positioned at the position in oil circulation loop, start vane pump gearing, extract the fluid in the first or second oil tank and pass through successively retaining valve, the 3 10 μ aero oil filter, the first Quick self-sealing joint, the first stainless steel flexible hose, the first stainless steel tee ball valve, the first temperature sensor, be arranged in parallel first, the 2 10 μ aero oil filter, be arranged in parallel first, the second stainless steel shell and tube fluid refrigeratory, the second temperature sensor, Cylindrical Gear Meter, the second stainless steel flexible hose, the second pressure transducer, the second Quick self-sealing joint and the 4th or the 5th Quick self-sealing joint are finally got back in the first or second oil tank, the speed that vane pump gearing extracts oil tank inner fluid is 30L/min, thereby reach the object of working fluid solid pollution degree in raising system, in process, open oil drain cock and carry out fluid sampling, when working fluid solid pollution degree is not less than GJB420-1987, completion system internal work liquid circulating filtration when 8/A level,
The oiling operation of permanent dress product:
Disconnection first, the 3rd Quick self-sealing joint, the second Quick self-sealing joint and the 4th or the 5th Quick self-sealing joint, to be connected respectively first, second Quick self-sealing joint with oil inlet end by the oil-out of the permanent dress of test product, open screw switch, the first stainless steel tee ball valve is pulled to the position to test loop, start a vane pump gearing by some flowing mode, thereby by the fluid in the first or second oil tank progressively, tested permanent dress product by the injection of amount;
In the time of underproof permanent dress product needed conversion fuel tank, if the fluid of leaving in system need to be got rid of, connect nitrogen cylinder at the 3rd Quick self-sealing joint place, separately get a stainless steel flexible hose and put into corresponding fuel tank, progressively open the switch on nitrogen cylinder, just the fluid of leaving in system can be got rid of clean.
Above embodiment is only explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into the utility model protection domain.
Claims (3)
1. the outer oil system of permanent dress testing table, it is characterized in that, comprise oil circulation loop, oil tank kinematic train and test loop, wherein, described test loop coordinates the mill that carries out successively permanent dress product to inspect and the permanent oil sealing operation that fills interiors of products with described oil circulation loop, described oil tank kinematic train is for coordinating with oil circulation loop, test loop successively, thus the oiling operation of completion system internal work liquid circulating filtration and permanent dress product.
2. the outer oil system of permanent dress testing table according to claim 1, it is characterized in that, described oil circulation loop comprise along its fluid transmission direction connect successively arrange the first Quick self-sealing joint, the first stainless steel flexible hose, the first stainless steel tee ball valve, 3 μ aero oil filters, Cylindrical Gear Meter, the second stainless steel flexible hose and the second Quick self-sealing joint, between the first Quick self-sealing joint and the first stainless steel flexible hose, between the second stainless steel flexible hose and the second Quick self-sealing joint, be also provided with first respectively, the second pressure transducer, described the first pressure transducer is connected with the first Quick self-sealing joint and the first stainless steel flexible hose mutual conduction by the first reducer tee, described the second pressure transducer is connected with the second Quick self-sealing joint and the second stainless steel flexible hose mutual conduction by the second reducer tee,
The oil inlet end of described test loop is connected with described the first stainless steel tee ball valve, its oil outlet end is connected between 3 μ aero oil filters and Cylindrical Gear Meter, described oil outlet end, between 3 μ aero oil filters and Cylindrical Gear Meter, be connected by the first equal tee mutual conduction, between the oil inlet end of described test loop and oil outlet end, be divided into two branch roads, every its fluid transmission direction of curb is connected successively one 10 filter of μ aero oil and stainless steel shell and tube fluid refrigeratorys is set, first, the 2 10 μ aero oil filter is with first, the second stainless steel shell and tube fluid refrigeratory, described first, the common bi-bit bi-pass electromagnetic water valve that connects of cooling duct of the second stainless steel shell and tube fluid refrigeratory, the oil inlet end of test loop and oil outlet end place are also respectively arranged with first, the second temperature sensor,
Described oil tank kinematic train comprises first, the second oil tank, described first, the output terminal of the second oil tank respectively by the second stainless steel tee ball valve along the vane pump gearing of connecting successively of fluid transmission direction in oil tank kinematic train, one retaining valve and the filter of the 3 10 μ aero oil, the outlet of described the 3 10 μ aero oil filter is connected with one end mutual conduction of the 3rd Quick self-sealing joint and screw switch respectively by the second equal tee, between described the 3rd Quick self-sealing joint and the second equal tee, be also provided with a rapid-acting coupling and excessively connect mouth, the other end of described screw switch is connected between the first stainless steel flexible hose and the first stainless steel tee ball valve and screw switch, between the first stainless steel flexible hose and the first stainless steel tee ball valve, interconnect by the 3rd reducer tee, on described the first oil tank, also conducting is provided with the 4th Quick self-sealing joint and the first stainless steel ball valve respectively, and on the second oil tank, also conducting is provided with the 5th Quick self-sealing joint and the second stainless steel ball valve respectively,
Between described Cylindrical Gear Meter and the second stainless steel flexible hose, be also provided with an oil drain cock, described oil drain cock is connected with the second stainless steel flexible hose mutual conduction with Cylindrical Gear Meter by the 4th reducer tee.
3. the outer oil system of permanent dress testing table according to claim 2, is characterized in that, the material of described first, second oil tank is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358746.5U CN204008127U (en) | 2014-06-30 | 2014-06-30 | The outer oil system of a kind of permanent dress testing table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358746.5U CN204008127U (en) | 2014-06-30 | 2014-06-30 | The outer oil system of a kind of permanent dress testing table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008127U true CN204008127U (en) | 2014-12-10 |
Family
ID=52048107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420358746.5U Withdrawn - After Issue CN204008127U (en) | 2014-06-30 | 2014-06-30 | The outer oil system of a kind of permanent dress testing table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155100A (en) * | 2014-06-30 | 2014-11-19 | 南京创贝高速传动机械有限公司 | Outer lubricating oil system for constant loading test stand and application method thereof |
| CN114321689A (en) * | 2021-12-21 | 2022-04-12 | 中国船舶重工集团公司第七O三研究所无锡分部 | Lubricating oil metering loading and unloading system for test bed and working process |
-
2014
- 2014-06-30 CN CN201420358746.5U patent/CN204008127U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155100A (en) * | 2014-06-30 | 2014-11-19 | 南京创贝高速传动机械有限公司 | Outer lubricating oil system for constant loading test stand and application method thereof |
| CN104155100B (en) * | 2014-06-30 | 2017-05-10 | 南京创贝高速传动机械有限公司 | Outer lubricating oil system for constant loading test stand and application method thereof |
| CN114321689A (en) * | 2021-12-21 | 2022-04-12 | 中国船舶重工集团公司第七O三研究所无锡分部 | Lubricating oil metering loading and unloading system for test bed and working process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202281737U (en) | Integration system for on-line monitoring of lubricating oil abrasive particles | |
| CN201724824U (en) | High-low temperature hydraulic system for automobile testing device | |
| CN103557204B (en) | A kind of hydraulicdirectional control valve contamination wear and Environment restore test stand | |
| CN202073872U (en) | Driving experiment device of hydraulic motor for airplane generator | |
| CN103698265A (en) | Internal corrosion testbed for engine coolant radiator tank | |
| CN206440318U (en) | A kind of piston cooling nozzle flow measurement device | |
| CN104155100A (en) | Outer lubricating oil system for constant loading test stand and application method thereof | |
| CN103411119A (en) | Lubricating oil filling system for gearbox offline test bed | |
| CN204008127U (en) | The outer oil system of a kind of permanent dress testing table | |
| CN103512723B (en) | A kind of experiment and measuring system of twisting visual research of turning for Pulsating Flow fluidised form | |
| CN205331398U (en) | A hydraulic control system for wash aerogenerator gear box in advance | |
| CN204115990U (en) | A kind of vehicle intercooler package seal checker | |
| CN203688420U (en) | Internal corrosion test bed for engine coolant radiating water tank | |
| CN107063685B (en) | Gear minimum lubricating oil mass measuring device | |
| CN203604997U (en) | Buried gas pipeline leakage monitoring and alarming system | |
| CN104359695A (en) | Nuclear-grade check valve dynamic reverse flow test device | |
| CN202066653U (en) | Automatic oil circuit leakage detection and control system of test bed of vehicle part | |
| CN203604956U (en) | Lubricating oil filling system for gearbox offline test bed | |
| CN201866018U (en) | Oil filtering device for industrial hydraulic and lubricating system | |
| CN101949403A (en) | Oil filter for industrial hydraulic and lubrication system | |
| CN108627547B (en) | Device and method for measuring fluid phase content distribution based on combination of screw pump and ERT (earth-boring machine) | |
| CN204877407U (en) | Oil recovery water injection metering device | |
| CN204882050U (en) | Valve capability test system is mediated to fuel filter pressure | |
| CN204387652U (en) | A kind of roller-mill bearing lubricating oil path detection device | |
| CN203835863U (en) | Online monitoring system for engineering-machinery hydraulic oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20170510 |