CN214584703U

CN214584703U - Lubricating oil soot dispersibility detection device

Info

Publication number: CN214584703U
Application number: CN202022534975.6U
Authority: CN
Inventors: 刘智峰; 黄卿; 张荷; 周旭光; 薛卫国; 汤仲平
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-11-02
Anticipated expiration: 2030-11-05

Abstract

The application provides a lubricating oil soot dispersing performance testing device, which comprises a box body and a testing device, wherein the box body comprises a base and an outer cover, the outer cover is covered on the base, and the outer cover and the base are enclosed to form the box body; the box body is further provided with: the test tube rack platform is positioned on the base and provided with a plurality of placing holes for placing test tubes; elevating gear sets up the centre of test-tube rack platform, the ring is installed elevating gear is last, and a plurality of clamping parts, a plurality of clamping parts for centre gripping chromatogram filter paper sample encircle the setting and are in on the ring, and each clamping part all corresponds the hole of putting of test-tube rack platform. The device can be used for simultaneously detecting a plurality of samples, and the soot spot position, the sample preparation size, the oil immersion time and the drying environment of each sample are all carried out in the same space system, so that the system error and the human error are greatly reduced through standardized and batched detection, and the detection efficiency is improved.

Description

Lubricating oil soot dispersibility detection device

Technical Field

The utility model belongs to chemical industry detection device field relates to an engine lubricating oil soot dispersibility detection device.

Background

Lubricating oil is called flowing blood of mechanical equipment, and is widely applied to the fields of automobile industry, engineering machinery, metallurgical mines, electric power, machine tools, special operation, transportation and the like. Lubricating oil is used as a main technical way for reducing friction and abrasion, and the quality of the lubricating oil directly influences the key performances of equipment, such as reliability, stability, operation life and the like. With the progress of equipment technology and increasingly stringent environmental requirements, countries in the world have increasingly strict emission regulations for limiting the emission of diesel engines, the design of engines is developing towards the trends of high efficiency, energy conservation and low emission, and engine manufacturers (OEMs) have increasingly adopted new technologies such as delayed injection, Exhaust Gas Recirculation (EGR) and particulate traps. However, under the retarded fuel injection condition, the fuel is not sufficiently combusted, and fuel that is not combusted by flame extinction remains on the cylinder wall. In addition, lubricating oil can also enter a combustion chamber through blowby gas, valve rod sealing, piston ring rubbing, oil steam and other channels from the inner wall of a cylinder and the combustion chamber, soot is accumulated for a long time, the accumulation of a large amount of soot can cause filter screen blockage to influence oil supply, the viscosity of oil is increased, the fluidity of the oil is deteriorated, meanwhile, the abrasion of the part of a cylinder sleeve-piston ring and the part of an air inlet and exhaust valve system of an engine is intensified, and the engine oil is required to have better soot dispersion performance, abrasion resistance and the like. The primary function of ashless dispersants is to prevent the aggregation of soot particles in lubricating oils, avoiding their settling. Currently, through research on a lubricating oil dispersant system, the interaction between the dispersant and soot is considered to be the key for determining the dispersion performance of the system, and the size of soot aggregated particles is directly related to the type and structure of the dispersant. The existing methods for evaluating the dispersion performance of the lubricating oil mainly comprise simulation evaluation and bench test. The bench test methods are largely classified into the American API methods, which include Mack T-7, Mack T-8A, Mack T-8E, and Mack T-11 bench tests, and the European CEC methods, which include the XUD11 BET, DV4TD, and DV6 benches, which are used to evaluate lubricating oil soot dispersancy and associated viscosity growth. The bench tests are closer to the actual operating conditions of the engine, and the results can effectively evaluate the soot dispersion condition of the ashless dispersant, but the bench tests are often long in operating period, large in the consumption of required fuel and equipment, high in cost and quite unfavorable for early development and selection of the dispersant. At present, a simple and efficient simulation evaluation method is urgently needed, an optimization scheme is rapidly screened out at the initial stage of dispersant development, and then bench test verification is further carried out. At present, the main domestic methods for evaluating the soot dispersion performance of the engine lubricating oil comprise the following steps: sludge-speck dispersion method, electron microscopy, particle sizer method, sedimentation method, and rotational rheological viscosity method. The oil sludge spot test method is mainly used for simulating the dispersion condition of low-temperature oil sludge, has certain relevance with oil sludge and paint film scores of gasoline engine oil VD and VE racks, but has the problems of weak distinguishability, poor repeatability and the like when the dispersion capability of soot particles is evaluated. The dispersion state of the soot particles is also investigated by means of an electron microscope, which determines the particle size distribution of the soot in the oil, or a particle sizer, which identifies the structure of the soot aggregates. Carbon black settling tests were used to investigate the dispersion stabilizing effect of ashless dispersants and viscosity index improvers on soot. Carbon black was dissolved in a base oil containing a dispersant, suspended by mechanical stirring, and after storage at 30 ℃ for 169 hours, the concentration of carbon black remaining in the supernatant was measured at 495nm using visible spectrum (the supernatant was diluted with white oil, compared with a standard carbon black solution), and the difference in carbon black concentration before and after the test showed the settling of particles and whether the additive was effective in dispersing and suspending particles. The viscometry is generally measured by kinematic viscometry (ASIM D445 or GB/T11237) using a countercurrent capillary viscometer, but countercurrent capillary viscometry is frequently subject to deviations when used for viscosity measurement of soot-containing oils. The rotational rheology method provides an improved means of measuring the viscosity of soot-containing oils of non-newtonian fluids, which allows the development of a viscosity curve with shear rate compared to the single point viscosity measurement at low shear conditions of capillary viscometers, and allows the comparison of the viscosity changes of different samples at the same shear rate. In addition, since the viscosity of the soot-containing oil of the non-Newtonian fluid is dependent on both shear and shear history, the pre-shear conditions are keyed to achieve good test results, the pre-shear is aimed at providing the same shear history for all samples before testing, the method allows accurate control of the pre-shear conditions, eliminating the additional shear history associated with sample handling and transport. [ LUBRICATING OIL, 2006(01)61-64 ] published a study on a simulation evaluation method of diesel engine oil dispersion performance in Liuxing Yew, and the authors used carbon black as a test raw material, dispersed the carbon black in oil under high-speed stirring, and examined the dispersion performance of oil products through viscosity change, and the study showed that the method can better distinguish the soot dispersion performance of diesel engine oil with the same quality grade but different dispersion performance from that of different dispersants. A research report of a diesel engine oil dispersivity simulation test method is an L-5 diesel engine oil soot dispersivity simulation test machine, a certain amount of oil sample is added into a sample tube, the sample tube is connected with a soot inlet tube and a soot outlet tube, the oil sample is kept at a certain temperature through an oil bath, soot generated during combustion of diesel oil is continuously introduced into the sample to be tested through a soot generator, a certain negative pressure is kept through a vacuum pump, the sample viscosity is increased when the soot is increased in the sample at a stable speed, the pressure change of a soot absorption bottle is measured to represent the dispersivity of the oil product, the dispersivity of the oil product is represented by the decay period of the oil product, and the longer the decay period is, the better the dispersivity of the oil product is shown. Patent CN102087264B discloses a method for testing the dispersibility of black sludge in marine medium-speed engine oil, which comprises preparing a mixed oil from the marine medium-speed engine oil and heavy marine fuel oil according to a certain proportion, injecting the mixed oil into an oil tank of a DKL-153 type crankcase simulation tester, the test board is arranged above an oil tank of a crankcase simulation test instrument, the temperature of the mixed oil is controlled within the range of 95-155 ℃, meanwhile, the temperature of the test plate is controlled within the range of 295-325 ℃, the oil splashing rod motor of the tester is started, the rotating speed of the oil splashing rod is controlled within the range of 500-1400rpm, the mixed oil in the oil tank is splashed onto the test plate, the working time is 2-48 hours, and after the test is finished, taking out the test plate, washing the test plate by using a solvent, and then comparing the test plate with the standard plate to obtain a test result, wherein the simulation test is consistent with the result of practical application, and a basis is provided for the final determination of the oil product formula. Patent CN102135507B discloses a method for simulating the dispersibility of engine oil, which comprises mixing 4% carbon black with test engine oil, stirring and heating to 90 deg.C, mixing 20% test engine oil with 80% n-pentane to form a mixed solution, contacting with a standard blotting paper with a contact volume of 15uL, and adsorbing for 1 min; putting the standard blotting paper into a test tube with the thickness of 200mm, wherein the test tube is filled with 10mL of the mixed solution, and soaking the bottom of the standard blotting paper into the test tube until carbon black is absorbed to the top of the standard blotting paper; the judgment was performed by a scanning electron microscope, and 0 means all white and 100 means all black in each region. Patent CN102866227B evaluated soot dispersancy in lubricant formulations containing dispersants by the following procedure: (a) preparing a dispersion of carbon black in a lubricant formulation; (b) depositing the dispersed carbon black sample from step (a) on a planar chromatography medium; (c) subjecting the sample of (b) to chromatographic conditions and (d) assessing the extent of migration of the carbon black by comparing the density of blackening due to the carbon black at predetermined locations along the chromatographic medium. Patent CN105717282B discloses a method for testing soot dispersancy performance of engine oil, which comprises adding a test oil product containing soot particles directly obtained from a test bench into engine oil, placing the test oil product in a rotational rheometer, and measuring the viscosity change curve of the oil sample with time under the conditions of fixed shear rate and fixed temperature; and calculating the viscosity increasing value and the slope in a certain period of time, and measuring the slope, wherein the smaller the slope is, the better the dispersing capacity of the engine oil is. From the published patent reports, the current means for simulating and evaluating the lubricating oil dispersion performance is single, and many methods have poor repeatability, so that experimental errors caused by human factors are large. In addition, carbon black is adopted to simulate soot particles in many methods, on one hand, the carbon black particles are not easy to dissolve in oil products and are easy to agglomerate and settle, on the other hand, the structural formulas of carbon black and real soot are different, and the state of the carbon black and the real soot in the oil products has a huge difference, which is a main reason for mismatching of simulation experiments and actual bench tests and causes a great obstacle to early development of ashless dispersants.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a lubricating oil soot dispersibility testing arrangement, include:

a housing, comprising:

a housing;

the outer cover is covered on the base, and the outer cover and the base are enclosed to form the box body;

the box body is further provided with:

the test tube rack platform is positioned on the base and is provided with a plurality of placing holes for placing test tubes;

the lifting device is arranged in the middle of the test tube rack platform;

the circular ring is arranged on the lifting device;

and the clamping parts are used for clamping the chromatographic filter paper sample and arranged on the circular ring in a surrounding manner, and each clamping part corresponds to the placing hole of the test tube rack platform.

In an embodiment, elevating gear includes a guide rail, a lift sliding sleeve, with the hydraulic motor that the guide rail is connected and with the lift control platform that hydraulic motor connects, the lift sliding sleeve cover is established the guide rail top, hydraulic motor installs in the base, the guide rail is vertical to be fixed the centre of test-tube rack platform just is in upper and lower flexible under hydraulic motor's the drive.

In one embodiment, a plurality of brackets are further provided, and one end of each bracket is fixed on the circular ring, and the other end of each bracket is fixed on the lifting sliding sleeve.

In one embodiment, the clamping portion is a clip.

In one embodiment, a plurality of rivets are fixed on the circular ring, the clamping portion is fixed on the rivets of the circular ring through a hanging rod, and the hanging rod is perpendicular to the plane where the circular ring is located and is located on the central line of the placing hole.

In an embodiment, the portable hanging device further comprises a circular cover, wherein a linking buckle is arranged on the circular cover, the upper part of the linking buckle is connected with the hanging rod, and the lower part of the linking buckle is connected with the clamping part.

In one embodiment, the circular cap is sized to fit the tube orifice of the test tube.

In an embodiment, the test tube rack platform is two layers of disks stacked up and down, each layer of disk is provided with a plurality of the placing holes, a circle of the placing holes is arranged along the edge of the disk, and the placing holes on the upper layer correspond to the placing holes on the lower layer up and down.

In one embodiment, the base, the ring, the bracket, the rivet and the hanging rod are made of stainless steel; the round cover and the outer cover are made of high-strength transparent resin.

In one embodiment, the number of the rivets 13 and the hanging rods on the circular ring 11 is 6-8, the number of the placing holes arranged on each layer of the disc is 6-8, and the diameter of each placing hole is 2-4 cm.

The utility model provides a lubricating oil soot dispersibility testing arrangement, compared with the prior art, its advantage lies in: the device can be used for simultaneously detecting a plurality of samples, and the soot spot position, the sample preparation size, the oil immersion time and the drying environment of each sample are all carried out in the same space system, so that the system error and the human error are greatly reduced through standardized and batched detection, and the detection efficiency is improved. In addition, the soot dispersivity detection result obtained by the device can be visually observed, the simulation data obtained by subsequent simple calculation has good correspondence with the engine bench test result, the test cost is low, and the ashless dispersants with different performances can be quickly and efficiently screened out at the initial stage of product development.

Drawings

FIG. 1 is a schematic view of the lubricating oil soot dispersing performance testing apparatus according to the present invention.

FIG. 2 comparative plots of soot spot dispersion before and after the test.

Wherein the reference numerals are:

1-a housing; 2-a base; 3-a lifting console; 4-an ascending bond; 5-a power switch; a 6-down bond; 7-upper disc; 8-a lower disc; 9-placing holes on the upper part; 10-lower placing holes; 11-a circular ring; 12-a scaffold; 13-riveting; 14-a guide rail; 15-lifting sliding sleeves; 16-hanging rods; 17-a link button; 18-circular lid; 19-test paper clip; 20-first chromatographic filter paper sample; 21-soot spots after dispersion; 22-round bottom glass test tube; 23-second chromatographic filter paper sample; 24-the original soot spot; 25-mobile phase reagent.

Detailed Description

The present invention will be described in further detail with reference to specific examples. Fig. 1 is a lubricating oil soot dispersancy performance testing apparatus, the apparatus includes a box body and a test tube rack platform, a lifting device, a circular ring 11 and a plurality of clamping parts arranged in the box body, the box body further includes an outer cover 1 and a base 2, the outer cover 1 is covered on the base 2, the outer cover 1 and the base 2 are enclosed to form the box body.

The test-tube rack platform is located on the base 2, a plurality of placing holes for placing test tubes are arranged, the test-tube rack platform is two layers of disks which are stacked up and down, each layer of the disks is provided with a plurality of placing holes, the placing holes are provided with a circle along the edge of the disks, the upper layer of the placing holes correspond to the lower layer of the placing holes and are perpendicular to the test-tube rack, in the application, the two layers of disks are respectively an upper layer disk 7 and a lower layer disk 8, the upper layer disk 7 is provided with a plurality of upper placing holes 9, the lower layer disk 8 is provided with a plurality of lower placing holes 10, each layer of the disks are provided with 6-8 placing holes, and the hole diameter of the placing holes is 2cm-4 cm.

The test tube is put in last input hole 9 and lower input hole 10 that corresponds from top to bottom, and the test tube is round bottom glass test tube or the test tube of other appearances in this application.

Elevating gear sets up the centre of test-tube rack platform, elevating gear include a guide rail 14, a lift sliding sleeve 15, with the hydraulic motor (not shown in the figure) that guide rail 14 connects and with the elevating control platform 3 that hydraulic motor connects, the 15 covers of lift sliding sleeve are established the 14 tops of guide rail, hydraulic motor installs in base 2, guide rail 14 is vertical to be fixed the centre of test-tube rack platform just is in upper and lower flexible under hydraulic motor's the drive.

The circular ring 11 is connected with a lifting sliding sleeve 15 through a plurality of brackets 12, one end of each bracket 12 is fixed on the circular ring 11, and the other end of each bracket 12 is fixed on the lifting sliding sleeve 15. In another embodiment, a plurality of rivets 13 are fixed on the ring 11, the clamping portion is fixed on the rivets 13 of the ring 11 through a hanging rod 16, the hanging rod 16 is perpendicular to the plane where the ring 11 is located and is located on the central line of the placing hole, the lifting sliding sleeve 15 is cylindrical with one end closed and the other end open, and the closed end of the lifting sliding sleeve 15 abuts against the top end of the guide rail 14 in this application.

In another application scenario, a circular cover 18 is further provided, a link buckle 17 is provided on the circular cover 18, one end of the hanging rod 16 is fixed on the rivet 13 of the circular ring 11, the other end of the hanging rod is connected with the upper portion of the link buckle 17 on the circular cover 18, and the lower portion of the link buckle 17 is connected with the clamping portion. In another embodiment, the holding portion is a clamp, such as a test strip clamp 19, and the test strip clamp 19 is used to hold the chromatographic filter sample. In addition, the circular cover 18 of the device is covered on the test tube during the test, so that the mobile phase reagent 25 can be effectively prevented from volatilizing to pollute the environment.

A motor control system is arranged in the lifting control platform 3 and is connected with the hydraulic motor, the lifting control platform 3 is also provided with a control panel, and a power switch 5, an ascending key 4 and a descending key 6 which are electrically connected with the motor control system are arranged on the control panel. And a power switch is turned on, the hydraulic motor works to drive the guide rail 14, the guide rail 14 moves up and down along the vertical direction perpendicular to the test tube rack platform to drive the circular ring 11 and the clamp on the circular ring 11 to move up and down.

In a specific use scenario of the present application, the following steps are performed when the apparatus provided herein is used to perform a lubricant soot dispersion performance test:

step S1, vertically placing a round-bottom glass test tube 22 with the diameter of 40mm and the height of 200mm in the upper and lower placing holes 10 and 11 of the test tube rack platform, and then adding 20ml of mobile phase reagent 25 into the round-bottom glass test tube 22;

step S2, the chromatographic filter paper sample containing the original soot spot 24 is vertically clamped by the test paper clamp 19, since the hanging rod 16 is perpendicular to the plane of the circular ring 11 and is positioned on the central line of the placing hole, the descending key 6 on the lifting control platform 3 is pressed, the second chromatographic filter paper sample 23 containing the original soot spot 24 is descended into the round-bottom glass test tube 22, and the second chromatographic filter paper sample 23 containing the original soot spot 24 is immersed into the mobile phase reagent 25.

In step S3, the test paper clip 19 is adjusted so that the circular cover 18 covers the test tube opening, and the liquid level of the mobile phase reagent 25 is aligned with the bottom 2cm of the second spectral filter paper sample 23 containing the original soot spot 24.

And step S4, covering the outer cover 1, starting timing, placing for 5 hours, then pressing the lifting key 4 on the lifting control platform 3 again, lifting to the top end of the vertical guide rail 14, taking down the glass test tube 22, placing the first chromatographic filter paper sample 20 with the dispersed soot spots 21 for 3 hours, and taking down the measurement calculation result after drying.

In one embodiment, the circular cap is sized to fit over the tube orifice so that it can snugly cover the tube orifice. In one embodiment, the base 2, the ring 11, the bracket 12, the rivet 13 and the hanging rod 16 are made of stainless steel; the round cover and the outer cover are made of high-strength transparent resin. The number of the rivets 13 and the hanging rods 16 on the circular ring 11 is 6-8.

The following detailed description is for the specific use of the present invention in performing a lubricating oil soot dispersancy performance test, the following steps:

(1) sample preparation

A. Selection of ashless dispersants

In order to verify the correspondence between the soot dispersancy performance testing device of the present invention and the engine pedestal, three ashless dispersants with different structures were selected in this example, wherein ashless dispersant a1 is commercially available boron-modified polyisobutylene succinimide type T154B; the ashless dispersant A2 is a commercial polymer polyisobutylene succinimide type T161; the ashless dispersant A3 is a self-made aromatic ashless dispersant RHY 167. The results of the bench test of the three dispersants Mack T-8E engine are shown in Table 1, the smaller the thermogravimetric analysis relative viscosity of 4.8% soot content is, the better the dispersibility is, the results show that the dispersing performance of the ashless dispersant A3 is better than that of the ashless dispersants A1 and 2, and the ashless dispersant A1 has the worst dispersibility.

TABLE 1 bench test results for three ashless dispersants Mack T-8E engines

B. Preparation of a chromatographic Filter paper sample 21 containing an original soot spot 24

The three ashless dispersants, engine soot and other finished ashless dispersant oils CI-4 were blended to 100g of test oil A, B, C, respectively, according to the formulation in Table 2, wherein the engine soot was a lower layer dope obtained by centrifugally separating the waste oil from the standard bench test.

Horizontally placing the chromatographic filter paper with the length of 15cm and the width of 3cm on an experiment table, drawing parallel lines at the positions of 2cm and 3cm on the edge of the bottom edge of the chromatographic filter paper respectively, then adding 10uL of test oil drops to the middle point of the parallel line at the position of 3cm by using a liquid transfer gun, horizontally placing the chromatographic filter paper in an oven at 35 ℃ for 30min for drying to obtain a second chromatographic filter paper sample 23 containing the original soot spot 24 as shown in figures 1 and 2(a/b/c), and then measuring each chromatographic filter paper sample 23 respectivelyDiameter d of the spot₁/d₂/d₃。

TABLE 2 test oil ratios

Test oil ratio (mass fraction)	Test oil A	Test oil B	Test oil C
				Ashless dispersant A1(T154B)	4.5％	-	-
Ashless dispersant A2(T161)	-	4.5％	-
				Ashless dispersant A3(RHY167)	-	-	4.5％
Engine soot
		3％	3％	3％
Other ashless dispersant-removed finished oil CI-4					95.5％	95.5％	95.5％
	Total up to	100％	100％	100％

B. Preparation of the Mobile phase reagent 25

Adding petroleum ether and the three ashless dispersants into a beaker according to the mass fraction of 8:2, stirring for 30min on a heating plate at 50 ℃, and mixing uniformly to prepare 50g of mobile phase reagent 25.

(2) Testing

C. Horizontally placing the soot dispersivity testing device of the utility model in a fume hood, taking down the outer cover 1, pressing the power key 5 on the lifting control platform 3 to start up, then pressing the lifting key 4 to lift the ring 11 and the hanging accessories (the bracket 12, the rivet 13, the hanging rod 16, the link buckle 17, the circular cover 18 and the test paper clip 19) to the top end of the vertical guide rail 14;

D. vertically placing a round-bottom glass test tube 22 with the diameter of 40mm and the height of 200mm in the upper and

lower holes

10 and 11 of the test tube rack, and then adding 20ml of mobile phase reagent 25 into the round-bottom glass test tube 22;

E. the second spectral filter paper sample 23 containing the original soot spot is vertically clamped by the test paper clamp 19, the second spectral filter paper sample 23 containing the original soot spot 24 is lowered into the round-bottomed glass test tube 22 by pressing the down key 6 on the lifting console 3, the second spectral filter paper sample 23 containing the original soot spot 24 is immersed into the mobile phase reagent 25, and the test paper clamp 19 is adjusted to make the circular cover 18 just cover the tube opening of the round-bottomed glass test tube 22, and simultaneously, the liquid level of the mobile phase reagent 25 is ensured to be aligned with the position 2cm at the bottom end of the second spectral filter paper sample 23 containing the original soot spot.

F. Covering the outer cover 1, starting timing, placing for 5 hours, pressing the lifting key 4 on the lifting control platform 3 again, lifting to the top end of the vertical guide rail 14, taking off the round bottom glass test tube 22, placing the dispersed soot spot chromatographic filter paper sample 20 for 3 hours, and taking off the measurement calculation result after drying.

(3) Result calculation and analysis

G. As shown in FIG. 2(A/B/C), the soot spot chromatography filter paper sample 20 after dispersion was visually observed to find that sample C had the best dispersion and sample 1 had the worst dispersion. The length h from the top of the dispersed soot spot to the center of the original soot spot was measured for each of the three samples₁/h₂/h₃. The dispersion ratios λ of the three samples were calculated by the following formula:

a larger value of the dispersion ratio lambda indicates better dispersion of the dispersant to soot. The results are shown in Table 3 and show that ashless dispersant A3 has better soot dispersancy than ashless dispersants A1 and 2, while ashless dispersant A1 has the worst dispersancy.

TABLE 3 sample parameters and Dispersion

Parameters of the sample	Sample A	Sample B	Sample C
				d	d₁＝1.13cm	d₂＝1.15cm	d₃＝1.12cm
h	h₁＝3.27	h₂＝4.16	h₃＝8.43
				λ	λ₁＝2.89	λ₂＝3.62	λ₃＝7.53

In addition, soot dispersibility testing arrangement and engine bench result relatively discover, both have fine correspondence, detection device testing result can directly perceivedly observe out, and the test cost is low moreover, can high efficiency select out the ashless dispersant of different performance at the product development initial stage.

The above description is only a preferred embodiment of the present invention, and it should be noted that: to the ordinary skilled person in this technical field, can also make a plurality of improvements under the prerequisite of not deviating from the utility model, this is improved and should be regarded as the utility model discloses a scope of protection down also.

Claims

1. A lubricating oil soot dispersancy performance monitoring apparatus, comprising:

a housing, comprising:

a housing;

the box body is further provided with:

the lifting device is arranged in the middle of the test tube rack platform;

the circular ring is arranged on the lifting device;

2. The lubricant soot dispersibility detection device of claim 1, wherein said lifting device comprises a guide rail, a lifting sliding sleeve, a hydraulic motor connected to said guide rail, and a lifting console connected to said hydraulic motor, said lifting sliding sleeve is sleeved on the top end of said guide rail, said hydraulic motor is installed in said base, said guide rail is vertically fixed in the middle of said test tube rack platform and is driven by said hydraulic motor to extend and retract up and down.

3. The lubricant soot dispersancy performance measurement device of claim 2, further comprising a plurality of supports, one end of said supports being fixed to said ring and the other end of said supports being fixed to said lift sleeve.

4. The lubricant soot dispersal performance testing apparatus of claim 3, wherein said clamping portion is a clip.

5. The lubricant soot dispersibility detection device of claim 4, wherein a plurality of rivets are fixed to said ring, and wherein said holder is fixed to said rivets of said ring by a hanging rod, said hanging rod being perpendicular to the plane of said ring and being located on the centerline of said placement hole.

6. The lubricant soot dispersibility detection device of claim 5, further comprising a circular cover, wherein said circular cover is provided with a link, an upper portion of said link is connected to said hanging rod, and a lower portion of said link is connected to said holding portion.

7. The lubricant soot dispersal performance testing apparatus of claim 6, wherein said circular cap is sized to fit the mouth of said test tube.

8. The lubricant soot dispersibility detection device of claim 7, wherein said test tube rack platform is a two-layer disk stacked one above another, each of said disks having a plurality of said placement holes, said placement holes being arranged in a circle along the edge of the disk, said placement holes of the upper layer corresponding to said placement holes of the lower layer one above the other.

9. The lubricating oil soot dispersancy performance monitoring apparatus according to claim 8, characterised in that: the base, the circular ring, the bracket, the rivet and the hanging rod are made of stainless steel; the round cover and the outer cover are made of high-strength transparent resin.

10. The lubricating oil soot dispersancy performance monitoring apparatus according to claim 8, characterised in that: the number of the rivets (13) and the hanging rods on the circular ring is 6-8, the number of the placing holes formed in each layer of the disc is 6-8, and the diameter of each placing hole is 2-4 cm.