TWI575234B - Monitoring the water content of lubricating oil with light penetration area - Google Patents

Description

Method for detecting moisture content of lubricating oil by light transmittance area

The invention relates to a method for detecting the moisture content of a lubricating oil by using a light transmittance area, in particular, a moisture permeability area monitoring lubrication which has a water content of a detectable lubricating oil and a module which can reduce the cost. Method for detecting the water content of oil.

Lubricating oil is used for running lubrication between mechanical components, and it will gradually deteriorate with the running time and frequency of mechanical components. Due to the increase of water content, the wear of mechanical components may be caused, the precision of precision instruments may be sharply reduced, and the process yield may be improved. The reduction. Even the situation such as scratching, causing temporary downtime or huge damage to the machine.

In principle, once the lubricating oil deteriorates, the water content will increase accordingly, and there is currently no detection module for monitoring the moisture content of the lubricating oil by the light transmittance area.

In view of this, it is necessary to develop a technique that can solve the above disadvantages.

It is an object of the present invention to provide a method for detecting the moisture content of a lubricating oil by using a light transmittance area, which has the advantages that the moisture content of the detectable lubricating oil is quite special and the modularization can reduce the cost. In particular, the problem to be solved by the present invention is that there is currently no problem such as a detection module for monitoring the moisture content of the lubricating oil with a light transmittance area.

The technical means for solving the above problems is to provide a method for detecting the moisture content of a lubricating oil by using a light transmittance area, which comprises: One. Preparation steps; two. Benchmark data detection step; three. Measured data detection steps; and IV. Compare steps.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the preferred embodiments illustrated herein.

The invention will be described in detail in the following examples in conjunction with the drawings:

11‧‧‧Preparation steps

12‧‧‧ Benchmark data detection steps

13‧‧‧Measured data detection steps

14‧‧‧ alignment steps

20A‧‧‧ benchmark operating mechanism

20B‧‧‧Measured running mechanism

20C‧‧‧Experimental operating mechanism

201‧‧‧ oil tank

202‧‧‧wear components

203‧‧‧Operating components

21‧‧‧Base unit

211‧‧‧ pivoting seat

212‧‧‧ 翘翘

213‧‧‧ Lifting rod

30‧‧‧Lubricating oil

40A‧‧‧Central Processing Department

40B‧‧‧Display Department

51‧‧‧Light emitter

52‧‧‧Optical Receiver

H‧‧‧ oil level

M‧‧‧ touch points

X‧‧‧Detection light

Q ‧ ‧ benchmark curve

( T _a , T _b ) ‧ ‧ Measured light penetration area value

W _a , W _b ‧‧‧ water content

L1‧‧‧First arm length

L2‧‧‧second arm length

F1‧‧‧First force

F2‧‧‧Second force

The first figure is a flow chart of the present invention

The second figure is a schematic diagram of the reference operating mechanism and the measured running mechanism of the present invention.

The third figure is a schematic diagram of the partial structure of the second figure

The fourth figure is a schematic diagram of the experimental running mechanism of the present invention.

The fifth figure is a schematic diagram of the partial structure of the fourth figure.

The sixth figure is a partial enlarged view of the fifth figure

The seventh figure is a reference relationship diagram of the light transmittance area corresponding to the water content of the reference operating mechanism of the present invention.

The eighth figure is the correspondence between the transmittance and the wavelength.

The ninth figure is the curve of the application of mineral oil in the eighth figure.

The tenth figure is the corresponding relationship between the working temperature-time-friction coefficient of lubricating oil

Referring to the first, second and third figures, the present invention is a method for detecting the moisture content of a lubricating oil by using a light transmittance area, which comprises the following steps: Preparation step 11: Prepare a reference operation mechanism 20A, at least one actual measurement operation mechanism 20B, and a lubricating oil 30. The reference operation mechanism 20A and the actual measurement operation mechanism 20B are the same type operation mechanism, and the lubricating oil 30 is infiltrated into the reference. The operating mechanism 20A and the measured operating mechanism 20B are used for lubrication to reduce the operational friction between the reference operating mechanism 20A and the measured operating mechanism 20B; The reference data detecting step 12: starting the reference operating mechanism 20A, and emitting a detection light X to the lubricating oil 30 in the reference operating mechanism 20A during the operation, and detecting the water content of the light transmittance area, thereby obtaining A reference relationship curve Q (as shown in the seventh figure); The measured data detecting step 13 is: starting the measured running mechanism 20B, and similarly emitting the detecting light X to the lubricating oil 30 in the measured running mechanism 20B during the operation, and detecting the water content of the light transmittance area, and Obtaining at least one measured light transmittance area value ( T _a , T _b ); Comparing step 14: using the correspondence between the at least one measured light transmittance area value ( T _a , T _b ) and the reference relationship curve Q , the ratio of the lubricating oil 30 in the measured running mechanism 20B can be compared Water quantity.

In practice, the reference operating mechanism 20A and the measured operating mechanism 20B are the same type of operating mechanism, and are similarly provided with an oil sump 201 for storing the lubricating oil 30, the lubricating oil 30 having an oil height H; The component 202 is disposed in the oil groove 201; a running element 203 is in operative contact with the wear element 202 at the oil level H in the oil sump 201 (such as the contact point M shown in the second figure); and the lubricating oil 30 is lubricated to reduce friction By.

Of course, the present invention can perform experiments in advance, and confirm the relationship between the light transmittance area of the lubricating oil 30 and the water content (the relationship curve of the present case is inversely proportional).

Referring to the fourth figure, the experimental process is performed by an experimental operating mechanism 20C. The experimental operating mechanism 20C and the reference operating mechanism 20A are of the same type, and based on various experimental conditions, may further include: a base unit 21, The pair of pivoting seats 211; a seesaw 212, one end of which is pivotally connected to the pair of pivoting seats 211, the oil groove 201 is attached to the seesaw plate 212; a lifting rod 213 is connected to The other end of the seesaw 212 is used to pull up and lower the seesaw 212.

As shown in the fifth and sixth figures, in the experimental running mechanism 20C, the pair of pivoting seats 211 to the lifting rod 213 have a first arm length L1, so that the lifting rod 213 can be The first force F1 pulls up the seesaw 212; the pair of pivoting seats 211 to the wear member 202 has a second arm length L2, which is less than (may be one-half) the first The arm length L1 is such that the wear member 202 can contact the running member 203 with a second force F2; the second force F2 is less than (may be one-half) the first force F1, so that the wear member can be adjusted The friction between the 202 and the running element 203.

The present invention further includes: a central processing unit 40A, the related data of the reference relationship curve Q is stored in the central processing unit 40A; a display unit 40B is electrically coupled to the central processing unit 40A; a light emitter 51, The central processing unit 40A is electrically connected to the central processing unit 40A, and is disposed in the lubricating oil 30. The light emitter 51 is configured to emit the detection light X. The light receiver 52 is electrically connected to the central processing unit 40A. The light emitting device 30 is disposed in the lubricating oil 30 for receiving the detecting light X. The central processing unit 40A controls the light emitting device 51 to emit the detecting light X. Taking the at least one measured light transmittance area value ( T _a , T _b ) and the reference relationship curve Q , and comparing the water content of the lubricating oil 30 in the measured running mechanism 20B by the corresponding relationship therebetween, The display portion 40B can instantly display the water content corresponding to the measured light transmittance area value ( T _a , T _b ) corresponding to the reference relationship curve Q.

The part to be specifically described here is that the "light transmittance area" means the sum of the respective wavelength (nm) x wavelength transmittance %. For example, referring to the eighth figure, in the range of wavelength 800 (nm) to wavelength 300 (nm), the product of a single wavelength (nm) and its transmittance % is calculated one by one, as in the following examples, and finally the sum is calculated.

Wavelength 800 (nm) x transmittance 97.6 (%) = 78080;

+

Wavelength 799 (nm) x penetration rate 97.6 (%) = 77982.4;

+

Wavelength 798 (nm) x transmittance 97.5 (%) = 77805;

+

.

.

.

+

Wavelength 300 (nm) x transmittance 0.1 (%) = 30.

Finally, the areas of the respective single wavelength x their transmittances are added, that is, 78080+77982.4+77805+...+30, and a sum is obtained, which is the "light transmittance area". The oblique line area of the eighth figure of the present case, that is, the light transmittance area with a wavelength between 400 nm and 600 nm. In this case, it is found that the light transmittance area with a wavelength between 400 nm and 600 nm has a very high correlation with the water content.

"Transmittance" (Tranmittance) is applied to the light transmittance of mineral oil in this case, and the corresponding curve of wavelength (nm)-transmission rate (%) as shown in Fig. 9 is obtained, and light The ratio of the penetrating medium is usually as follows: (See the second figure) and expressed as a percentage T %.

Where: P _O : light before penetrating the medium (in this case, lubricating oil); P : light after penetrating the medium (in this case, lubricating oil).

The detection method of the present invention is as follows: the reference operation mechanism 20A is first activated, and the corresponding central processing unit 40A, the display unit 40B, the light emitter 51 and the light receiver 52, the central processing unit 40 controls the light emitter 51 to emit the detection light X, and receives the light transmittance data through the light receiver 52, and first substitutes the formula: And obtaining the result and substituting into the formula: wavelength (nm) x transmittance %, and the at least one measured light transmittance area value ( T _a , T _b ) can be obtained. Then, by taking the reference relationship curve Q , the water content can be obtained correspondingly, and the result can be displayed on the display unit 40B.

In other words, the central processing unit 40A can detect the water content corresponding to the light transmittance area of the lubricating oil 30 in the reference operating mechanism 20A at least at any time during the operation of the reference operating mechanism 20A. And the reference relationship curve Q (as shown in the seventh figure) is obtained as the reference data for comparison.

The actual operation mechanism 20B is restarted, and the central processing unit 40A, the display unit 40B, the light emitter 51 and the light receiver 52 are correspondingly activated. The central processing unit 40A can be operated during the measured operation mechanism 20B. At any one of the times, the lubricating oil 30 in the measured running mechanism 20B is subjected to detection of the water transmittance corresponding to the light transmittance area, and at least one measured light transmittance area value ( T _a , T _b ) is obtained. The central processing unit 40A compares the correspondence relationship with the reference relationship curve Q , and displays the instantaneous water content; and displays it on the display unit 40B.

For example, taking the seventh figure as an example: when the light transmittance area is T _a , corresponding to the reference relationship curve Q , the water content is W _a ; when the light transmittance area is T _b , correspondingly The reference relationship curve Q can obtain a water content of W _b ; in addition, the present invention also establishes a corresponding graph of the working temperature-time-friction coefficient of the lubricating oil (as shown in the tenth figure), for reference only.

The advantages and functions of the present invention are as follows:

[1] The moisture content of the detectable lubricant is quite special. The invention firstly obtains a transmittance-wavelength corresponding curve by using an experiment (using mineral oil as an application example), and further obtains a plurality of reference wavelength transmittance values by a plurality of wavelengths x transmittance, and finally obtains a plurality of reference light transmittance area values. The reference relationship curve, which exhibits the light transmittance area-water content correspondence of mineral oil (in inverse ratio), and can be used as a reference, and the corresponding lubricating oil is compared with the measured area ratio of any measured light transmittance. Water content, or used as a basis for other changes in lubrication factors. Therefore, the moisture content of the detectable lubricating oil is quite special.

[2] Modularization can reduce costs. The invention can be a modular device, which greatly reduces the cost.

The present invention has been described in detail with reference to the preferred embodiments of the present invention, without departing from the spirit and scope of the invention.

11‧‧‧Preparation steps

12‧‧‧ Benchmark data detection steps

13‧‧‧Measured data detection steps

14‧‧‧ alignment steps

Claims (5)

A method for detecting the moisture content of a lubricating oil by using a light transmittance area includes: a preparation step: preparing a reference operation mechanism, at least one actual measurement operation mechanism, and a lubricating oil, wherein the reference operation mechanism and the actual measurement operation mechanism are the same type operation mechanism, and the lubricating oil is infiltrated into the reference operation mechanism and the actual measurement operation mechanism Internally, for lubrication, reducing the running friction between the reference operating mechanism and the measured running mechanism; The reference data detecting step is: starting the reference running mechanism, and emitting a detecting light to the lubricating oil in the reference running mechanism during the running, and performing detection of the water permeability area corresponding to the water content to obtain a reference relationship curve; three. The measured data detecting step is: starting the measured running mechanism, and in the running process, the detecting light is emitted by the lubricating oil in the measured running mechanism, and the light transmittance area is detected corresponding to the water content, and at least one measured light is obtained. Permeability area value; four. Comparing step: using the corresponding relationship between the at least one measured light transmittance area value and the reference relationship curve, the water content of the lubricating oil in the measured running mechanism is compared; wherein the reference operating mechanism and the The measured running mechanism is a synchronous operating mechanism, and is provided with: an oil tank for storing the lubricating oil, the lubricating oil has a liquid height; a wear component is disposed in the oil tank; a running component, a wear and a wear The components are in operative contact with each other at the level of the oil in the oil sump; and lubrication is achieved with the lubricating oil to reduce friction. Checking the water content of lubricating oil by light penetration area as described in item 1 of the patent application scope The method further includes: a base unit, comprising: a pair of pivoting seats; a seesaw, one end pivotally connected to the pair of pivoting seats, the oil groove is disposed on the seesaw; A rod is attached to the other end of the seesaw to raise and lower the seesaw. The method for detecting the moisture content of the lubricating oil by the light transmittance area according to the second aspect of the patent application, wherein: the pair of pivoting seats to the lifting rod has a first arm length, so that The lifting rod can pull the seesaw by a first force; the pair of pivoting seats between the wearing elements have a second arm length which is smaller than the length of the first arm, so that the wearing component The operating element can be contacted by a second force; the second force is less than the first force, such that the friction between the wear element and the running element can be adjusted. The method for detecting the moisture content of the lubricating oil by the light transmittance area according to the first aspect of the patent application, further comprising: a central processing unit; a display unit electrically connecting the central processing unit; and a light emission And electrically connected to the central processing unit, and disposed in the lubricating oil, the light emitter is configured to emit the detection light; a light receiver is electrically connected to the central processing unit, and is disposed in the lubrication Inside the oil The light emitter is configured to receive the detection light; thereby, the central processing unit controls the light emitter to emit the detection light, and is configured to capture the at least one measured light transmittance area value and the reference relationship a curve, by which the water content of the lubricating oil in the measured running mechanism is compared, the display portion can instantly display the water content corresponding to the measured light transmittance area value in the reference relationship curve . The method for detecting the moisture content of a lubricating oil by a light transmittance area according to the first aspect of the patent application, wherein the wavelength of the light transmittance area is between 400 nm and 600 nm.