CN104535477B

CN104535477B - New contamination level of oil liquid on-Line Monitor Device

Info

Publication number: CN104535477B
Application number: CN201410808635.4A
Authority: CN
Inventors: 陈彬; 刘阁; 张贤明; 韩超; 朱华星
Original assignee: Chongqing Technology and Business University
Current assignee: Chongqing Technology and Business University
Priority date: 2014-12-23
Filing date: 2014-12-23
Publication date: 2017-03-15
Anticipated expiration: 2034-12-23
Also published as: CN104535477A

Abstract

New contamination level of oil liquid on-Line Monitor Device, mainly includes：Oil inlet pipe, monitor tank body, 15um filter mesh layers, oil-out, auger central shaft, packing auger blade, 5um filter mesh layers, pressure transducer, auger central shaft bearing composition；Oil inlet pipe is arranged on monitor tank body upper left quarter, with the tangent connection of monitor tank body；Monitor tank body is built-in with 15 μm of filter mesh layer, and 15 μm of filter mesh layer inner chambers are provided between the upper and lower end face of auger central shaft and packing auger blade, auger central shaft two ends and monitor tank body and are provided with radial bearing, rotate auger central shaft；The value that pressure transducer at oil-out and 15 μm of filter mesh layer inner chambers, the upper end cover of exocoel is arranged on by monitoring, contamination level of oil liquid numerical value to be monitored can be drawn, the class of pollution of fluid is exported, is realized oil contamination on-line monitoring, simple structure, and monitoring result do not affected by fluid performance.

Description

New contamination level of oil liquid on-Line Monitor Device

Technical field

The present invention relates to a kind of dustiness on-Line Monitor Device of fluid, more particularly to lubricant pollution on-line monitoring neck Domain.

Background technology

With the development of science and technology, the progress of society, the step of China's process of industrialization in productive life is accelerated, industry Production equipment tends to maximization, integrated and automatization.In modern industry equipments, oil contamination seriously threatens equipment Safe operation, wherein according to statistics, the failure more than 75% of hydraulic system is caused due to the pollution of fluid medium, therefore right The dustiness monitoring of equipment oil and control oil contamination are extremely important, are also necessary.Existing monitoring oil contamination side Method and technology mainly have：Microscope monitoring technology, spectral analysis technique and liquid automatic particle counter monitoring technology etc., basic category In off-line monitoring, and mainly oil state is monitored by regular sampling analysis, however examining report have larger Hysteresis quality, it is impossible to the practical situation of in time reflection operation fluid.

Therefore, complicated for existing monitoring oil contamination equipment, high cost and assay method is loaded down with trivial details waits not enough is studied A kind of new contamination level of oil liquid on-Line Monitor Device, is monitored to the dustiness for producing equipment lubrication oil, to carrying out equipment event The aspects such as the intelligent diagnostics of barrier, raising equipment component service life and control oil contamination have very important meaning.

Patent No. CN 101539565A " a kind of oil pollution monitoring device of hydraulic system " and the patent No. CN101533003A " device for monitoring oil contamination " discloses a kind of device for monitoring oil contamination, in the inlet and outlet of filter It is separately installed with pressure transducer；The outfan of the pressure transducer is connected with two interfaces of microcontroller respectively.Should Invention is embedded in hydraulic system, can go out the soiling value of fluid by on-line monitoring, apply micro- in the course of work of hydraulic system Processor is acquired to oil liquid pressure signal, stores and signal processing, and realizes showing, store, print and being wirelessly transferred Function, the shortcoming of the device are to detect that the size of dustiness it is critical only that the filter used by it, but the device filter Easily it is prematured by solids, is difficult to rinse, and detection range is limited；Processing and installation are inconvenient, and manufacturing cost is high.

Content of the invention

In order to overcome existing device for monitoring oil contamination easily to block, be difficult to rinse, equipment is complicated, high cost and measure side Method is loaded down with trivial details to wait deficiency, and the present invention proposes a kind of new contamination level of oil liquid on-Line Monitor Device, mainly by oil inlet pipe, monitor tank Body, 15um filter mesh layers, oil-out, auger central shaft, packing auger blade, 5um filter mesh layers, pressure transducer, auger center axle bearing Composition；It is characterized in that described oil inlet pipe is arranged on monitor tank body upper left quarter, with the tangent connection of monitor tank body；Described Monitor tank body is cylindrical, and monitor tank body is built-in with the filter mesh layer of the 15um of a cylinder, 15um filter mesh layers and monitor The closely sealed connection of the upper and lower end cap of tank body, so as to the gap between monitor tank wall forms filter mesh layer exocoel and and monitor Tank body central area forms filter mesh layer inner chamber；Described 15um filter mesh layer inner chambers are provided with auger central shaft and packing auger blade；Institute The auger central shaft that states is cylindrical shape, and one end closing, the other end are connected with oil-out；Its two ends is upper and lower with monitor tank body Radial bearing is provided between end face, rotates auger central shaft, described packing auger blade is arranged on auger central shaft, Open slot is uniformly arranged on auger central shaft, and the filter mesh layer of 5um is provided with open slot；In oil-out and 15um filter screens Pressure transducer is equipped with respectively at layer inner chamber, the upper end cover of exocoel.

The technical solution adopted for the present invention to solve the technical problems is：Fluid to be monitored is in certain pressure source lower edge Oil inlet pipe enters monitor tank body, and by the separation of 15um filter mesh layers, particle diameter is isolated in outside filter mesh layer more than 15um pollutant Chamber, and the pollutant for being less than 15um then pass through entrance filter mesh layer inner chamber；The fluid for entering filter mesh layer inner chamber strikes auger Blade, makes auger central shaft obtain power and rotate, and the packing auger blade of rotation applies opposite force to fluid, makes the tubulence energy of fluid Increase, part fluid has certain centrifugal force, so that backwash is carried out to 15um filter mesh layers, make aggregation on 15um filter mesh layers Particulate pollutant is rinsed, it is ensured that the specific filtration resistance of 15um filter mesh layers is constant；Most of fluid is then due to packing auger blade simultaneously Effect there is centripetal force, enter auger central shaft near zone.Due to being equipped with the filter mesh layer of 5um on auger central shaft, it is more than The pollutant of 5um are isolated in filter mesh layer inner chamber, and are less than the pollutant of 5um then as fluid passes through entrance auger center Inside axle, discharged by oil-out.Each is detected by the pressure transducer arranged in filter mesh layer exocoel, inner chamber and oil-out Partial pressure value, tests set up data base with passing through（According to ISO4406 standards）It is analyzed, can draws to be monitored Contamination level of oil liquid numerical value, realizes oil contamination on-line monitoring.

The invention has the beneficial effects as follows：It is 5um and 15um (with ISO4406 standards to adopt filter mesh layer and pore size 5 μm, 15 μm of corresponding grain size) form, become according to the pollutant particle diameter difference oil liquid pressure that filtered and caused Change the relation being directly proportional to pollution grade, thus detect pollution grade, simple structure.Auger leaf of the present invention by setting Piece, increases the turbulent flow of fluid after filtering, and has opposition to the fluid for entering 15um filter mesh layers, makes fluid filter 15 μm Stratum reticulare carries out backwash, so that 15 μm of filter mesh layers are not easily blocked and which is permeated than keeping a steady state value；Built using experiment Vertical data base, by way of arranging pressure transducer in filter mesh layer exocoel, inner chamber, oil-out, by monitoring 3 pressure sensings The value of device, can define the amounts of particles of 15um, 5um pollutant in fluid in system work process, and on-line monitoring goes out fluid The class of pollution, realize on-line monitoring function, reduce impact of the anthropic factor to testing result.

Description of the drawings

Fig. 1 is the structural representation of the present invention.

1 oil inlet pipe in figure, 2 monitor tank bodies, 3 15um filter mesh layers, 4 oil-outs, 5 auger central shafts, 6 Packing auger blade, 7 5um filter mesh layers, 8 pressure transducers, 9 auger center axle bearings, 10 filter mesh layer exocoels, 11 filter screens Layer inner chamber.

Fig. 2 is the structure top view of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawings the specific work process of the present invention is elaborated.

The present invention is by oil inlet pipe 1, monitor tank body 2,15um filter mesh layers 3, oil-out 4, auger central shaft 5, packing auger blade 6th, 5um filter mesh layers 7, pressure transducer 8, auger center axle bearing 9, filter mesh layer exocoel 10, filter mesh layer inner chamber 11 are constituted, by this Lubricating oil system bright with to be detected is in parallel, and the fluid to be detected with certain pressure enters monitor tank body by oil inlet pipe 1 2, tangential velocity is obtained, and the fluid of monitor tank body 2 is entered along the helically formula flowing of 2 inwall of monitor tank body, in oil pressure Under effect, particle diameter is isolated in filter mesh layer exocoel 10 more than 15um pollutant, and the pollutant for being less than 15um are then passed through 15um filter mesh layers 3 enter filter mesh layer inner chamber 11；The fluid of entrance filter mesh layer inner chamber 11 strikes Heart axle 5 makes which obtain energy and rotate, and the packing auger blade 6 of rotation makes the turbulent flow increase of fluid after filtration, filter mesh layer inner chamber In 11, pollutant of the particle diameter less than 5um pass through 5um filter mesh layers 7, and pollutant of the particle diameter more than 5um less than 15um are then trapped in filter Stratum reticulare inner chamber 11, while the packing auger blade 6 for rotating applies opposite force to fluid, makes fluid carry out backwash to 15um filter mesh layers 3, So that the infiltration of filter mesh layer is than keeping a steady state value；Entered into by 5um filter mesh layers 7 little containing particle diameter in auger central shaft 5 In the fluid of 5um pollutant, discharge from oil-out；Passed using the pressure being arranged on filter mesh layer exocoel 10 and filter mesh layer inner chamber 11 Sensor, defines the pressure differential of particle diameter 15um pollutant or so, and the pressure being arranged on filter mesh layer inner chamber 11 and oil-out 4 in the same manner is passed Sensor, defines the pressure differential of particle diameter 5um pollutant or so, by certain control strategy, there is provided reasonable corresponding experiment parameter Under the conditions of data, the data base for setting up particle diameter and each pressure transducer numerical relation, so as to boundary in system work process The amounts of particles of 15um, 5um pollutant in stand oil liquid, realizes that on-line monitoring goes out the soiling value of fluid.

A kind of new contamination level of oil liquid on-Line Monitor Device that the present invention is provided, can be such that testing result marks with ISO4406 Accurate 5 μm corresponding of grain size, 15 μm of canonical form export the class of pollution of fluid；The auger simple structure of setting, solution The problems such as current general monitoring device filter mesh layer of having determined easily is blocked, is difficult flushing, high cost, loaded down with trivial details assay method；By certain Control strategy, the data base under the conditions of corresponding experiment parameter is rationally provided, different types of lubricating oil can be made at this Do not affected by fluid performance in bright detection process, test result is relatively reliable；At the collection of pressure sensor data Reason, can on-line monitoring go out the class of pollution of fluid, realize on-line monitoring function, reduce shadow of the anthropic factor to testing result Ring.

Claims

1. new contamination level of oil liquid on-Line Monitor Device, mainly by oil inlet pipe, monitor tank body, 15um filter mesh layers, oil-out, strand Imperial central shaft, packing auger blade, 5um filter mesh layers, pressure transducer, auger central shaft bearing composition, it is characterised in that described enters Oil pipe is arranged on monitor tank body upper left quarter, with the tangent connection of monitor tank body;Described monitor tank body is cylinder, monitors Device tank body is built-in with the filter mesh layer of the 15um of a cylinder, 15um filter mesh layers and the closely sealed connection of the upper and lower end cap of monitor tank body, from And form filter mesh layer exocoel with the gap between monitor tank wall and formed in filter mesh layer with monitor tank body central area Chamber;Described 15um filter mesh layer inner chambers are provided with auger central shaft and packing auger blade, and auger central shaft is cylindrical shape, an end seal Close, the other end is connected with oil-out；Centripetal axle is provided between the upper and lower end face of auger central shaft two ends and monitor tank body Hold, rotate auger central shaft;Described packing auger blade is arranged on auger central shaft, is uniformly set on auger central shaft Open slot is put, and the filter mesh layer of 5um is provided with open slot.

2. new contamination level of oil liquid on-Line Monitor Device according to claim 1, it is characterised in that in oil-out and Pressure transducer is equipped with respectively at 15um filter mesh layer inner chambers, the upper end cover of exocoel, by monitoring the value of 3 pressure transducers, energy Enough amounts of particles for defining 15um, 5um pollutant in fluid in system work process, so that realize that contamination level of oil liquid is supervised online Brake, reduces impact of the anthropic factor to testing result.