CN104535477A - Novel oil pollution degree online monitoring device - Google Patents

Abstract

The invention discloses a novel oil pollution degree online monitoring device which mainly comprises an oil inlet pipe, a monitor tank body, a 15-micron filtering net layer, an oil outlet, an auger center shaft, auger blades, a 5-micron filtering net layer, a pressure sensor and an auger center shaft bearing, wherein the oil inlet pipe is arranged on the left upper part of the monitor tank body and is tangentially connected with the monitor tank body; the 15-micron filtering net layer is arranged in the monitor tank body; the auger center shaft and the auger blades are arranged in the inner cavity of the 15-micron filtering net layer; and radial bearings are arranged between two ends of the auger center shaft and the upper and lower end surfaces of the monitor tank body, so that the auger center shaft can rotate. The values of the pressure sensors arranged at the oil outlet, the upper end covers of the inner cavity and the outer cavity of the 15-micron filtering net layer are monitored, so that the numerical value of to-be-monitored oil pollution degree can be obtained, the pollution class of the oil is output, online oil pollution monitoring is realized, the structure is simple, and the monitoring result is not influenced by the oil performance.

Description

Novel 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, particularly lubricant pollution on-line monitoring field.

Background technology

Along with the development of science and technology, the progress of society, accelerates the step of China's process of industrialization in productive life, and equipment of industrial product trend maximizes, integrated and robotization.In modern industry equipments, oil contamination serious threat is to the safe operation of equipment, and wherein according to statistics, the fault more than 75% of hydraulic system is because the pollution of fluid medium causes, therefore to equipment oil dustiness monitoring and control oil contamination extremely important, be also necessary.Existing monitoring oil contamination Method and Technology mainly contains: microscope monitoring technology, spectral analysis technique and liquid automatic particle counter monitoring technology etc., substantially off-line monitoring is belonged to, and mainly by regular sampling analysis, oil state is monitored, but examining report has larger hysteresis quality, the actual conditions running fluid can not be reflected in time.

Therefore, complicated for existing monitoring oil contamination equipment, it is not enough that the high and assay method of cost is loaded down with trivial details etc., study a kind of novel contamination level of oil liquid on-Line Monitor Device, the dustiness of production equipment lubricating oil is monitored, to carry out equipment failure intelligent diagnostics, improve equipment component serviceable life and control the aspect such as oil contamination and have very important meaning.

Patent No. CN 101539565A " a kind of oil pollution monitoring device of hydraulic system " and patent No. CN101533003A " device for monitoring oil contamination " discloses a kind of device for monitoring oil contamination, is separately installed with pressure transducer in the import of filtrator and outlet; The output terminal of this pressure transducer is connected with two interfaces of microcontroller respectively.This invention is embedded in hydraulic system, the soiling value of fluid can be gone out by on-line monitoring in the course of work of hydraulic system, application microprocessor gathers oil liquid pressure signal, stores and signal transacting, and realize the functions such as display, storage, printing and wireless transmission, the shortcoming of this device is that the size key detecting dustiness is the filtrator that it uses, but this device filtrator is easily prematured by solids, and not easily rinse, and sensing range is limited; Processing and installation inconvenience, manufacturing cost is high.

Summary of the invention

Deficiencies such as easily blocking to overcome existing device for monitoring oil contamination, not easily rinsing, equipment is complicated, cost is high and assay method is loaded down with trivial details, the present invention proposes a kind of novel contamination level of oil liquid on-Line Monitor Device, primarily of oil inlet pipe, monitor tank body, 15um filter mesh layer, oil-out, auger central shaft, packing auger blade, 5um filter mesh layer, pressure transducer, auger central shaft bearing composition; It is characterized in that described oil inlet pipe is arranged on monitor tank body upper left quarter, be connected with monitor tank body is tangent; Described monitor tank body is cylindrical, monitor tank body is built-in with the filter mesh layer of a columniform 15um, 15um filter mesh layer is connected with the upper and lower end cap of monitor tank body is closely sealed, thus and gap between monitor tank wall form filter mesh layer exocoel and form filter mesh layer inner chamber with monitor tank body central area; Described 15um filter mesh layer inner chamber is provided with auger central shaft and packing auger blade; Described auger central shaft is cylindrical shape, and one end is closed, and the other end is connected with oil-out; Be provided with radial bearing between the upper and lower end face of its two ends and monitor tank body, auger central shaft can be rotated, described packing auger blade is arranged on auger central shaft, and auger central shaft evenly arranges open slot, is provided with the filter mesh layer of 5um in open slot; Pressure transducer is equipped with respectively at the upper end cover place of oil-out and 15um filter mesh layer inner chamber, exocoel.

The technical solution adopted for the present invention to solve the technical problems is: fluid to be monitored enters monitor tank body along oil inlet pipe under certain pressure source, by the separation of 15um filter mesh layer, particle diameter is greater than 15um pollutant and is isolated in filter mesh layer exocoel, is less than the pollutant of 15um then smoothly by entering filter mesh layer inner chamber; The fluid entering filter mesh layer inner chamber strikes packing auger blade, auger central shaft is made to obtain power and rotate, the packing auger blade rotated applies opposite force to fluid, the tubulence energy of fluid is increased, part fluid has certain centrifugal force, thus back flush is carried out to 15um filter mesh layer, the particulate pollutant that 15um filter mesh layer is assembled is rinsed, ensure that the specific filtration resistance of 15um filter mesh layer is constant; Most of fluid is then because the effect of packing auger blade has centripetal force simultaneously, enters auger central shaft near zone.Owing to auger central shaft being equipped with the filter mesh layer of 5um, the pollutant being greater than 5um is isolated in filter mesh layer inner chamber, and the pollutant being less than 5um, then along with fluid is inner by entering auger central shaft smoothly, is discharged by oil-out.The force value of various piece is detected by the pressure transducer arranged at filter mesh layer exocoel, inner chamber and oil-out, analyze with through testing the database (according to ISO4406 standard) set up, contamination level of oil liquid numerical value to be monitored can be drawn, realize oil contamination on-line monitoring.

The invention has the beneficial effects as follows: adopt filter mesh layer and pore size to be the form of 5um with 15um (grain size corresponding with ISO4406 standard 5 μm, 15 μm), the oil liquid pressure caused according to different being filtered of pollutant particle diameter changes the relation be directly proportional to pollution grade, detect pollution grade thus, structure is simple.The packing auger blade of the present invention by arranging, increase the turbulent flow of fluid after filtering, there is opposition to the fluid entering 15um filter mesh layer, make fluid carry out back flush to 15 μm of filter mesh layers, thus 15 μm of filter mesh layers are not easily blocked and makes it permeate than maintenance steady state value; Utilize experiment building database, by arranging the mode of pressure transducer at filter mesh layer exocoel, inner chamber, oil-out, by monitoring the value of 3 pressure transducers, the amounts of particles of 15um, 5um pollutant in fluid can be defined in system work process, on-line monitoring goes out the class of pollution of fluid, realize on-line monitoring function, reduce human factor to the impact of testing result.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

1-oil inlet pipe in figure, 2-monitor tank body, 3-15um filter mesh layer, 4-oil-out, 5-auger central shaft, 6-packing auger blade, 7-5um filter mesh layer, 8-pressure transducer, 9-auger central shaft bearing, 10-filter mesh layer exocoel, 11-filter mesh layer inner chamber.

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

Embodiment

Below in conjunction with accompanying drawing, specific works process of the present invention is elaborated.

The present invention is by oil inlet pipe 1, monitor tank body 2, 15um filter mesh layer 3, oil-out 4, auger central shaft 5, packing auger blade 6, 5um filter mesh layer 7, pressure transducer 8, auger central shaft bearing 9, filter mesh layer exocoel 10, filter mesh layer inner chamber 11 forms, this invention is in parallel with lubricating oil system to be detected, the fluid to be detected with certain pressure enters monitor tank body 2 by oil inlet pipe 1, obtain tangential velocity, enter the fluid of monitor tank body 2 along the helically formula flowing of monitor tank body 2 inwall, under the effect of oil pressure, particle diameter is greater than 15um pollutant and is isolated in filter mesh layer exocoel 10, be less than that the pollutant of 15um is then smooth enters filter mesh layer inner chamber 11 by 15um filter mesh layer 3, the fluid entering filter mesh layer inner chamber 11 strikes on packing auger blade 6 and drives auger central shaft 5 make it obtain energy and rotate, after the packing auger blade 6 rotated makes filtration, the turbulent flow of fluid increases, in filter mesh layer inner chamber 11, particle diameter is less than the pollutant of 5um by 5um filter mesh layer 7, particle diameter is greater than the pollutant that 5um is less than 15um and is then trapped in filter mesh layer inner chamber 11, the packing auger blade simultaneously rotated 6 pairs of fluid apply opposite force, make fluid carry out back flush to 15um filter mesh layer 3, make the infiltration of filter mesh layer than maintenance steady state value, entered into the fluid being less than 5um pollutant containing particle diameter in auger central shaft 5 by 5um filter mesh layer 7, discharge from oil-out, utilize the pressure transducer be arranged on filter mesh layer exocoel 10 and filter mesh layer inner chamber 11, define the pressure differential about particle diameter 15um pollutant, in like manner be arranged on the pressure transducer on filter mesh layer inner chamber 11 and oil-out 4, define the pressure differential about particle diameter 5um pollutant, by certain control strategy, data under the experiment parameter condition of rationally correspondence are provided, set up the database of particle diameter and each pressure transducer numerical relation, thus in system work process, define the amounts of particles of 15um, 5um pollutant in fluid, realize the soiling value that on-line monitoring goes out fluid.

The novel contamination level of oil liquid on-Line Monitor Device of one provided by the invention, can make testing result export the class of pollution of fluid with the corresponding grain size 5 μm of ISO4406 standard, the canonical form of 15 μm; The auger structure arranged is simple, solves the problems such as general monitoring device filter mesh layer at present easily blocks, not easily flushing, cost is high, assay method is loaded down with trivial details; By certain control strategy, rationally provide the database under the experiment parameter condition of correspondence, can make the impact of different types of lubricating oil not by fluid performance in the testing process of this invention, test result is more reliable; By the acquisition process of pressure sensor data, the class of pollution of fluid can be gone out by on-line monitoring, realize on-line monitoring function, reduce human factor to the impact of testing result.

Claims (2)

1. novel contamination level of oil liquid on-Line Monitor Device; primarily of oil inlet pipe, monitor tank body, 15um filter mesh layer, oil-out, auger central shaft, packing auger blade, 5um filter mesh layer, pressure transducer, auger central shaft bearing composition; it is characterized in that described oil inlet pipe is arranged on monitor tank body upper left quarter, be connected with monitor tank body is tangent; Described monitor tank body is cylindrical; monitor tank body is built-in with the filter mesh layer of a columniform 15um; 15um filter mesh layer is connected with the upper and lower end cap of monitor tank body is closely sealed, thus and gap between monitor tank wall form filter mesh layer exocoel and form filter mesh layer inner chamber with monitor tank body central area; Described 15um filter mesh layer inner chamber is provided with auger central shaft and packing auger blade, and auger central shaft is cylindrical shape, and one end is closed, and the other end is connected with oil-out; Be provided with radial bearing between the upper and lower end face of auger central shaft two ends and monitor tank body, auger central shaft can be rotated; Described packing auger blade is arranged on auger central shaft, and auger central shaft evenly arranges open slot, is provided with the filter mesh layer of 5um in open slot.

2. novel contamination level of oil liquid on-Line Monitor Device according to claim 1, it is characterized in that being equipped with pressure transducer respectively at the upper end cover place of oil-out and 15um filter mesh layer inner chamber, exocoel, by monitoring the value of 3 pressure transducers, the amounts of particles of 15um, 5um pollutant in fluid can be defined in system work process, thus realize contamination level of oil liquid on-line monitoring function, reduce human factor to the impact of testing result.