CN220690938U

CN220690938U - Oil moisture detection device

Info

Publication number: CN220690938U
Application number: CN202322026841.7U
Authority: CN
Inventors: 田洪祥; 左小琼; 张西勇
Original assignee: Wuhan Donghu University
Current assignee: Wuhan Donghu University
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-03-29
Anticipated expiration: 2033-07-31

Abstract

The utility model relates to the technical field of oil detection, in particular to an oil moisture detection device which comprises an insulating rod and a heat conducting rod, wherein an oil drop groove and a thermistor for heating are arranged on the heat conducting rod, a sealing box is arranged on the oil drop groove and is connected with a testing mechanism through an exhaust pipe, the testing mechanism is used for testing the gas quantity of the exhaust pipe, an openable and airtight observation window is further arranged on the sealing box, and the observation window is used for dropping oil into the oil drop groove in an opened state. According to the utility model, the sealing box and the testing mechanism are arranged, so that the gas generated by water evaporation can be collected and amplified for display, the gas capacity is determined, and further, any water content of any variety of lubricating oil is accurately judged, oil liquids with different water contents are not required to be carried for comparison, the size and the number of bubbles are not required to be observed, the observation difficulty of testing is greatly reduced, and the detection accuracy is improved.

Description

Oil moisture detection device

Technical Field

The utility model relates to the technical field of oil detection, in particular to an oil moisture detection device.

Background

At present, the on-site measurement of the moisture in the domestic lubricating oil lacks proper instruments, on-line measurement is more in mechanical or power equipment, more in independent lubricating systems or hydraulic systems, and on-line detection devices are affected by a plurality of elements, so that the use of the on-line detection devices is restricted due to the reasons of reliability, measurement precision and cost. Because the water content in the lubricating oil is not timely or accurate, the water content in the lubricating oil is usually discovered and taken when the water content exceeds a standard, which not only affects the service life of the lubricating oil, but also causes harm to the safe operation of mechanical equipment.

A heating test method is disclosed in the paper named "on-site measurement research of the moisture of ship lubricating oil and hydraulic oil", the operation mode is that the oil to be tested is dripped on a heating device, and the quantity and the size of bubbles are compared with those of oil with the water content of 0.1% so as to judge whether the water content exceeds 0.1%. In addition, oil with different water contents or oil with different types can have different bubble characteristics of the hot plate, and the bubble characteristics need to be judged in a short time for generating bubbles. Through naked eye observation bubble quantity and size and contrast, have the degree of difficulty to general measurement personnel, and different oil change index is different, and the concrete water content of fluid can not be confirmed to prior art, and then can't predict whether the oil needs to be changed, can only carry the oil of different water contents to contrast, if the water content is 0.1% or 0.2% oil, leads to measuring inconvenient.

In summary, in the prior art, the specific water content of different oils cannot be accurately determined by on-site measurement, so that oil cannot be changed according to the oil change index, the difficulty in determining the water content of the oil is high, the bubble characteristics need to be determined and compared in a short time, and the accuracy of determination is affected.

Disclosure of Invention

The utility model aims to provide an oil water content detection device which has the advantage of rapidly and accurately acquiring different water contents of oil materials on site and solves the problems that in the prior art, the water contents of the oil materials are required to be observed in the field, the difficulty is high, the accuracy is low, and the carrying of comparison oil materials is inconvenient.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an oil moisture detection device, includes heat conduction stick and insulating rod, be provided with the oil drip groove on the heat conduction stick to and be used for the thermistor of heating, be provided with sealed box on the oil drip groove, sealed box passes through the blast pipe and is connected with testing mechanism, testing mechanism is used for testing the gas volume of blast pipe, still be provided with on the sealed box and open and inclosed observation window, under the observation window open state, be used for to the oil drip in the oil drip groove.

Preferably, the observation window is connected with the sealing box through a hinge, and a sealing ring is arranged between the observation window and the sealing box.

Preferably, a locking mechanism is arranged between the observation window and the sealing box.

Preferably, the testing mechanism adopts a transparent testing tube, the testing tube is used for being inserted into water under the state that the observation window is opened, the testing tube is taken out from the water under the condition that the observation window is closed, the testing tube is used for judging the water content of the tested oil through the change of the water level inside the testing tube before and after the evaporation of the water in the oil dropping groove.

Preferably, the test tube is provided with an operation mark, and the operation mark is used for determining the depth of the test tube inserted into water.

Preferably, the test tube is provided with a detection mark, and the detection mark is used for judging the relation between the water level change and the water content.

Preferably, the testing mechanism adopts a flowmeter, and the flowmeter is fixed on the insulating rod through a fixing plate.

Preferably, the fixed plate is provided with a reference signboard, and the reference signboard is marked with the relation between the accumulated flow and the water content.

Preferably, the sealing box is made of heat insulation materials.

Preferably, the observation window is made of transparent materials.

Compared with the prior art, the utility model has the following beneficial effects:

through setting up seal box and accredited testing organization, can collect and enlarge the show to the gas that moisture evaporation produced, show through the tubule promptly, perhaps show through miniature flowmeter, thereby confirm the gas capacity, and then confirm the moisture content in the fluid, the arbitrary moisture content of judgement arbitrary variety lubricating oil that can be accurate, need not to carry the fluid of different moisture contents to contrast, also need not to observe bubble size and quantity, only need observe whether have bubble and water level height or flowmeter numerical value can, greatly reduced the observation degree of difficulty of test, the detection accuracy is improved, the problem that the bubble characteristic need be observed to the oil water content of prior art scene determination, the degree of difficulty is big, the rate of accuracy is low, carry the inconvenient.

Drawings

FIG. 1 is a schematic diagram of a structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a view window according to the present utility model;

FIG. 3 is a schematic diagram of a second embodiment of the present utility model;

FIG. 4 is a schematic illustration of a flowmeter according to an embodiment of the present utility model.

In the figure: 1. a heat conduction rod; 2. a thermistor; 3. an insulating rod; 4. a wire; 5. an oil drip groove; 6. a seal box; 7. an exhaust pipe; 8. an observation window; 9. a seal ring; 10. a locking mechanism; 11. a test tube; 12. an operation identifier; 13. detecting the identification; 14. a flow meter; 15. a fixing plate; 16. reference is made to the signboard.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

as shown in fig. 1, an oil moisture detecting device comprises a heat conducting rod 1 and an insulating rod 3, wherein an oil dropping groove 5 is arranged on the heat conducting rod 1, and a thermistor 2 for heating is arranged on the heat conducting rod, the functions of the thermistor 2 comprise two functions of electrifying and heating, when the temperature is lower than a set value, electrifying and heating, and when the temperature is higher than the set value, current passing is reduced until power is off. The thermistor 2 is positioned in an inner hole with one open end and one closed end of the heat conducting rod 1 and is in close contact with the inner surface of the inner hole of the heat conducting rod 1, the open end of the inner hole of the heat conducting rod 1 is connected with the heat insulating insulator, and the lead 4 of the thermistor 2 is led out from the hole in the heat insulating insulator. The drip groove 5 is provided with a sealing box 6.

As shown in fig. 2, the observation window 8 is connected with the sealing box 6 through a hinge, and a sealing ring 9 is arranged. The observation window 8 can facilitate the testers to observe the bubble characteristics as an aid to see whether bubbles are generated or not, and when no bubbles are generated, the test is ended. The sealing ring 9 is in order to guarantee the airtight performance of the sealing box 6, and the locking mechanism 10 is arranged between the observation window 8 and the sealing box 6, so that the sealing ring 9 can be guaranteed to be tightly pressed and sealed. The sealing box 6 adopts heat insulation material, avoids heat conduction rod 1 heating to damage sealing box 6, and observation window 8 adopts transparent material, makes things convenient for measuring personnel to observe the bubble, and when there is not the bubble, the measurement ends.

The sealing box 6 is connected with a testing mechanism through an exhaust pipe 7, the testing mechanism is used for testing the gas quantity of the exhaust pipe 7, an openable and airtight observation window 8 is further arranged on the sealing box 6, and the sealing box is used for dripping oil into the oil dripping groove 5 when the observation window 8 is opened. The oil drip groove 5 is a round hole with the diameter of 12mm and the depth of 3mm, and the size can be adjusted according to the addition amount of oil.

The test mechanism adopts transparent test tube 11, and test tube 11 is arranged in inserting water under the state that observation window 8 is opened, takes out from water under the condition that observation window 8 is closed, and test tube 11 passes through the water content of oil under test of the change of the water level in the inside of oil drip groove 5 before and after the evaporation of the water. The test tube 11 is provided with an operation marker 12, and the operation marker 12 is used for determining the depth of the test tube 11 inserted into water. The test tube 11 is provided with a detection mark 13, and the detection mark 13 is used for judging the relation between the water level change and the water content. The thickness and length of the test tube 11 can be adjusted according to the oil variety to be tested and the water content of the measured object, if the water content is large, a longer test tube 11 or a thicker test tube 11 can be used, and if the amount of oil dropped is small, a thinner and longer test tube 11 can be used.

The testing process comprises the following steps: before the test, the observation window 8 of the sealing box 6 is opened, 5-20 drops of oil to be tested are dripped, the oil to be tested can be increased or decreased according to the requirement, and then the test tube 11 is inserted into water. Because the sealing box 6 is in an open state, the pressure intensity at the two ends of the test tube 11 is the same, after water enters the depth of the operation mark 12, the sealing box 6 is closed and locked through the locking mechanism 10, and the locking mechanism 10 adopts a fastening screw. The test tube 11 is taken out of the water, the heat conduction rod 1 is heated by the thermistor 2, the oil in the oil dripping groove 5 is further heated, the heating temperature of the thermistor 2 is lower than the evaporation temperature of the oil and higher than the evaporation temperature of the water, and the PTC resistor with the heating temperature of 150-220 ℃ is selected, so that the power is higher than 40W. The evaporation temperature of the lubricating oil is generally above 300 ℃, and the evaporation temperature of the water is about 100 ℃, so that the thermistor 2 can evaporate the water in the oil into water vapor, the water vapor enters the test tube 11 through the exhaust pipe 7, the water level of the test tube 11 is reduced, and the water content of the detected oil is determined by judging the water level reduced height of the test tube 11 and the height of the detection mark 13.

Taking diesel engine lubricating oil with water content of 0.1% as an example, 10 drops of the lubricating oil are dripped into the oil dripping groove 5, about 0.285ml (different oil viscosities are different, the volume of each drop is different, generally 20 drops of the lubricating oil is 0.5ml, the large volume is larger, the small volume is smaller, the drop number can be controlled according to the viscosity not used), a test tube 11 is inserted into water, a plastic tube with the inner diameter of 2mm and the length of 50cm is adopted as the test tube 11, when the insertion depth of the test tube 11 is 40cm (the mark line of the operation mark 12 is set), the sealing box 6 is closed and locked, the test tube 11 is taken out, and the liquid level is kept at the operation mark 12. The thermistor 2 heats the oil, water evaporates to generate water vapor, the oil in the oil dropping groove 5 generates bubbles, the bubbles enter the test tube 11 through the exhaust pipe 7, and the liquid level in the test tube 11 is lowered by about 11cm compared with the position of the operation mark 12 after the bubbles are not generated by the oil for a period of time.

In addition, the inside air of seal box 6 can receive the heating inflation, and influences not greatly, and can correct, inserts test tube 11 to the operation sign in the aquatic, does not add fluid, pulls out after the direct closed seal box 6, heats the air, sets for the marking that the water content is 0 after the water level descends, sets up the sum of other water contents according to the distance again and detects sign 13.

The test principle is as follows: by utilizing the temperature control of the heating of the thermistor 2, water in the oil is evaporated to be water vapor, the oil is not evaporated, the volume of the oil becomes 1200 times larger, 10 drops of diesel engine lubricating oil with the water content of 0.1 percent are about 0.285ml, 0.342ml of water vapor is also generated, and 0.342ml of water vapor occupies 108.9mm, namely 10.89cm in a test tube 11 with the inner diameter of 2mm, so that the observation is obvious, and a tester can judge the water content of the oil by directly observing the height of the water level drop, namely, the water content of the oil drops by about 11cm, the water content of 0.1 percent, the water content of the oil drops by about 22cm, the water content of 0.2 percent, and the like. The operation mark 12 is directly marked on the test tube 11, namely, an initial water level line is marked, then the water content is marked at the position where the air is heated and falls to be 0, the water content is marked at the position of 10.89cm below 0 to be 0.1%, and the like, the water content is marked at 0.2% and 0.3% … …, and a tester can judge the water content of the oil liquid at a glance according to the detection mark 13 where the water level falls, so that the method is simple, convenient and accurate. If the test tube 11 is required to be replaced or not for judging whether the specific oil is required to be replaced, the detection mark 13 can be written with the replacement or not, the liquid level is not required to be replaced above the replacement line, and the liquid level is below the replacement line, so that the replacement is more concise and clear.

Embodiment two:

as shown in fig. 3 and 4, this embodiment differs from the first embodiment in that the test mechanism replaces the test tube 11 with a flow meter 14, and the flow meter 14 is fixed to the insulating rod 3 by a fixing plate 15. The fixed plate 15 is provided with a reference sign board 16, and the reference sign board 16 is marked with the relation between the accumulated flow and the water content. The other matters are the same as in the first embodiment.

The flow meter 14 can also directly test the flow of steam generated by heating, and a tester can further determine the water content of the oil liquid by observing the relation between the flow and the reference signboard 16, but more oil liquid can be dripped in order to ensure the accuracy of the test of the flow meter 14 and reduce the cost of the flow meter 14, so that more gas is generated, the test of the flow meter 14 is more accurate, and meanwhile, the requirement on the flow meter 14 is reduced, and the cost of the flow meter 14 is further reduced.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil moisture detection device, includes heat conduction stick (1) and insulating stick (3), be provided with oil drip groove (5) on heat conduction stick (1) to and be used for thermistor (2) of heating, its characterized in that: be provided with seal box (6) on oil drip groove (5), seal box (6) are connected with testing mechanism through blast pipe (7), testing mechanism is used for testing the gas volume of blast pipe (7), still be provided with on seal box (6) openable and inclosed observation window (8), under observation window (8) open state, be arranged in to oil drip groove (5) oil drip.

2. The oil moisture detecting device according to claim 1, wherein: the observation window (8) is connected with the sealing box (6) through a hinge, and a sealing ring (9) is arranged between the observation window and the sealing box.

3. The oil moisture detecting device according to claim 1, wherein: a locking mechanism (10) is arranged between the observation window (8) and the sealing box (6).

4. The oil moisture detecting device according to claim 1, wherein: the testing mechanism adopts a transparent testing tube (11), the testing tube (11) is used for being inserted into water under the state that the observation window (8) is opened, the testing tube is taken out from the water under the condition that the observation window (8) is closed, the testing tube (11) is used for judging the water content of the tested oil through the change of the water level in the testing tube before and after the evaporation of the water in the oil dropping groove (5).

5. The oil moisture detecting device according to claim 4, wherein: the test tube (11) is provided with an operation mark (12), and the operation mark (12) is used for determining the depth of the test tube (11) inserted into water.

6. The oil moisture detecting device according to claim 4, wherein: the water level measuring device is characterized in that a detection mark (13) is arranged on the test tube (11), and the detection mark (13) is used for judging the relation between the water level change and the water content.

7. The oil moisture detecting device according to claim 1, wherein: the testing mechanism adopts a flowmeter (14), and the flowmeter (14) is fixed on the insulating rod (3) through a fixing plate (15).

8. The oil moisture detecting device according to claim 7, wherein: the fixed plate (15) is provided with a reference signboard (16), and the reference signboard (16) is marked with the relation between the accumulated flow and the water content.

9. The oil moisture detecting device according to claim 1, wherein: the sealing box (6) is made of heat insulation materials.

10. The oil moisture detecting device according to claim 1, wherein: the observation window (8) is made of transparent materials.