CN2599563Y

CN2599563Y - Device for accurately measuring iron content of oil

Info

Publication number: CN2599563Y
Application number: CNU032362927U
Authority: CN
Inventors: 萌楚; 楚萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-21
Filing date: 2003-01-21
Publication date: 2004-01-14
Anticipated expiration: 2013-01-21

Abstract

The utility model relates to a device designed for accurate measurement of the iron content of oil fluid. The device comprises a heavy-duty magnet, a thin-wall support and a precise electronic balance, etc. The device uses the strong magnetic field of the heavy-duty magnet to separate the ferromagnetism abrasive grains from the tested oil fluid; and the gravity of these ferromagnetism abrasive grains and the magnetic attraction in the magnetic field are directly measured by the precision electronic balance through the thin-wall support so as to achieve accurate measurement of the iron content in the oil fluid. The utility model is characterized in novel design, high-efficient separation, high-precision measurement, high-sensitive alarm, etc; in addition, the utility model is stable in performance, easy to operate, low in price and extensive in application. The utility model can be extensively used in the sectors of operating condition testing, fault diagnosis and tribology research of various machinery equipments.

Description

A kind of device of accurate measurement fluid iron-holder

The utility model relates to a kind of device of accurate measuring trace quantity ferromagnetism abrasive particle content, particularly a kind of device that can directly separate and accurately measure ferromagnetism abrasive particle content in the fluid simultaneously.

The oil analysis technology is the important means of studying the equipment wearing situation, carrying out machinery and equipment state-detection and fault diagnosis.The key instrument of measuring trace iron magnetic abrasive grain in the fluid at present has spectrometer, ferrograph etc., wherein spectrometer can only be measured the content of atomic little abrasive particle (≤10 microns) in the fluid, does not have detectability for the especially unusual abrasive particle (＞50 microns) of the normal abrasive particle (＞10 microns) of common mechanical equipment.The ferromagnetism abrasive particle that ferrograph is mainly used in the fluid carries out being observed main qualitative analysis with pattern, the error of its quantitative test very big (＞15%), this mainly is that conversion (separates earlier because secondary is adopted in its quantitative measurment, the back is measured) and the measuring method that is similar to the optics microprojection, can't guarantee measuring accuracy, and spectrometer and ferrograph also exist the instrument price more expensive, use complicated operation, uses defectives such as restricted, thereby can not satisfy the needs that mechanical industry monitoring of equipment is diagnosed.

The purpose of this utility model is that a kind of device that can accurately measure ferromagnetism abrasive particle in the fluid (＞5 microns) will be provided.The utility model is made up of strong magnets, thin-walled support, precise electronic sky equality.The purpose of this utility model is achieved in that detecting oil sample slowly is transported on the thin-walled support of strong magnets magnetic pole top reposefully, ferromagnetism abrasive particle in the fluid is attracted to the centre of surface of thin-walled support under the effect of high-intensity magnetic field, and directly reads the gravity of ferromagnetism abrasive particle and suffered magnetic force by the precise electronic balance.

Because the field region that the detection oil sample is flowed through has very high magnetic field intensity and magnetic field gradient, thereby the ferromagnetism abrasive particle in the fluid is subjected to very big magnetic force in magnetic field.Under the effect of strong magnetic force, be trapped in the thin-walled rack surface greater than 5 microns abrasive particles, and distribute between two parties by the magnetic line of force, in stable condition.Simultaneously, because the magnetic attraction that the ferromagnetism abrasive particle that is adsorbed is subjected to is thousands of times even up to ten thousand times of himself gravity, thereby can accurately measure the content and the variation thereof of trace iron magnetic abrasive grain in the tested fluid by the precise electronic balance in magnetic field.Because the magnetic force that big abrasive particle is subjected in magnetic field is far longer than the little abrasive particle of equivalent, therefore when having unusual big abrasive particle to occur in the oil sample, the iron-holder reading that the precise electronic balance is measured will increase considerably, thereby have the performance of highly sensitive warning in addition.

By following example and be described with reference to the accompanying drawings particular content of the present utility model, but be not used in restriction the utility model.

Tested oil sample with the flow velocity of 1-5 ml/min along on the thin-walled support (2) that send oil pipe (6) slowly to be transported to be positioned at strong magnets (3) magnetic pole (4) top (gap is less than 1.5 millimeters), under the effect of high-intensity magnetic field, the ferromagnetism abrasive particle (5) in the fluid is attracted to thin-walled support (2) centre of surface.Simultaneously, the fluid that flows through high magnetic field area is sucked away along scavenge pipe (7).And then the cleaning fluid (as zellon) strong with dissolving power, that volatility is good cleans sending oil pipe (6) and thin-walled support (2) centre of surface with same flow velocity.After clean finishing, be trapped in the gravity of ferromagnetism abrasive particle (5) of thin-walled support (2) centre of surface and suffered magnetic field force and measure and directly provide reading Fe value by precise electronic balance (1) by pallet.

In the fluid iron-holder measurement mechanism that accompanying drawing provides, strong magnets (3) adopts high energy product (35-38MGOe) neodymium iron boron (NiFeB) permanent magnetic material, magnetic pole (4) adopts the good soft magnetic material of magnetic conductivity (as 1J85 etc.), and magnetic pole (4) Surface field intensity surpasses 1 tesla (about 10000 Gausses).Other parts then adopt nonmagnetic metal (as copper, aluminium) or nonmetal materials such as (plastics, organic materials).

With the high accuracy fluid iron-holder detector that the utility model consists of, has high efficiency separation, high-precision The characteristics such as degree measurement, highly sensitive warning, and stable performance, easy and simple to handle, moderate, widely applicable, Can be widely used in operating mode detection, fault diagnosis and the tribology research field of various machinery equipments.

Claims

1. a device of measuring the fluid iron-holder is characterized in that being supported on the thin-walled support (2) on precise electronic balance (1) pallet, has less than 1.5 mm clearance between the magnetic pole (4) of its upper surface and strong magnets (3).

2. device according to claim 1 is characterized in that strong magnets (3) made or electromagnet apparatus by the permanent magnetic material of high energy product.

3. according to claim 1 and 2 described devices, it is characterized in that the magnetic pole (4) of strong magnets (3) is made by the soft magnetic material of high magnetic permeability.

4. device according to claim 1 is characterized in that thin-walled support (2) can be a class, bar class or other frame-type part, is made by nonmagnetic substance.

5. according to claim 1 and 4 described devices, it is characterized in that thin-walled support (2) can be in the top or a side of precise electronic balance (1).