CN201786521U

CN201786521U - Fuel filter test-bed

Info

Publication number: CN201786521U
Application number: CN2010202426862U
Authority: CN
Inventors: 范伟; 蒲金鹏
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2010-06-29
Filing date: 2010-06-29
Publication date: 2011-04-06
Anticipated expiration: 2020-06-29

Abstract

The utility model discloses a fuel filter test-bed, which is characterized by comprising a pre-filter container, and an output port of the pre-filter container is connected with a three-stage filter device through an electric pump and a flow meter; and an outlet of the three-stage filter device is connected with a post-filter container. By arranging the pre-filter container, the pre-filter container is connected with the three-stage filter device through the electric pump and the flow meter, and the three-stage filter device is connected with the post-filter container, accordingly, the electric pump drives fuel to flow through the three-stage filter device, meanwhile, the related numerical values of the filter device is detected, thereby obtaining the best combination mode of the three-stage filter device, and improving the utilization rate of a filter and prolonging the service life.

Description

A kind of fuel oil filter test stand

Technical field

The utility model relates to a kind of testing apparatus, is specifically related to a kind of fuel oil filter test stand.

Background technique

At present, in engineering fields such as building, water conservancies, all kinds of construction planies begin to be used widely, such as excavator, hoist, bulldozer or the like, the construction plant that this class is used for engineering construction is referred to as engineering machinery, and is wherein especially more general with the use of excavator.Excavator mainly is made up of traveling gear, swivel gear, operator cabin, equipment and control gear, its power plant generally are to adopt diesel engine as power plant, diesel engine is the internal-combustion engine that adopts diesel oil to act as a fuel, as back and forth movement the chemical energy in the fuel oil is converted into the mechanical energy of powered vehicle action by burning fuel oil pusher dynamic air cylinder inner carrier, it has the high advantage of the thermal efficiency, power ratio is big and save diesel oil, thereby is applied in widely in the power plant of excavator.

Modern diesel engines has entered the automatically controlled epoch, diesel engine is strict more to fuel-injected control under various operating modes, must improve the reliability of oil feed pump and oil sprayer, the wearing and tearing of oil feed pump, oil sprayer or supercharging plug cock precision pair will be the one of the main reasons of automatically controlled inefficacy, and this just has higher requirement to diesel filter.The Europe III motor that uses has adopted the high-pressure electric control ejecting system at present, its precision pair gap is very little, high pressure co-rail system requires fuel oil to filter can remove 95% 3 micron particles, just can avoid diesel oil impurity that oil feed pump or oil sprayer are produced wearing and tearing and a series of serious consequences such as the fuel feeding decline that causes, atomization badness, oil consumption increase, power decline, deterioration of emission.Yet along with the progressively enhancing of environmental consciousness, the Abgasgesetz increasingly stringent that becomes, the existing diesel quality of China does not but have corresponding raising.In order to solve the wear problem of diesel oil impurity to high pressure co-rail system, each filter core producer has released the filter core of 2 micron levels one after another, the highi degree of accuracy filter core certainly will be scrapped in easier obstruction, to use be the effective ways that prolong filter element life so the filter of different accuracy is together in series, adopted two-stage fuel oil filtration system on the excavator that has, three grades of fuel oil filtration systems of the then employing that has, but all do not make the filter precision of the filter that is cascaded and hold the ash amount and obtain optimum Match, cause the working life of the filter that is cascaded inconsistent, changing maintenance to filter core makes troubles, at document " filter is the design by test stand repeatedly " though in disclosed test method followed international standard ISO 16889, but only the strainability of single filter core is made evaluation, can not evaluate the synthetic filter performance of a plurality of filters of being cascaded, also can't obtain different filter precisioies and hold the best of breed scheme of the filter of ash amount.

Summary of the invention

The utility model purpose provides a kind of fuel oil filter test stand, uses this device, can draw the optimum composition method of a plurality of filters, has improved the utilization ratio of filter and has prolonged working life.

For achieving the above object, the technical solution adopted in the utility model is: a kind of fuel oil filter test stand, comprise a container before filtering, described container before filtering delivery outlet is connected with the three-stage filtration device through motor-drive pump and flowmeter, and described three-stage filtration device outlet is connected with filtered container.

Further technological scheme, described three-stage filtration device comprises successively first filter, second filter and the 3rd filter of series connection, cooperate with described first, second and third filter also be connected with first differential pressure gauge respectively, second pressure reduction is taken into account the 3rd differential pressure gauge.

In the technique scheme, described container before filtering is used to place the fuel oil before filtering, motor-drive pump is used to provide the power transmission fuel oil, first, second and third filter in the three-stage filtration device adopts the different model filter, be respectively applied for pre-flock, filter just and smart filter, the appearance of three filters ash discharge curve can learn directly that the differential pressure gauge of three filter correspondences is respectively applied for the resistance that detects in the filter, and filtered container is used to deposit the fuel oil after the filtration.Test stand in use, fuel oil under the driving of motor-drive pump with constant flow rate Qtest successively through three filters, flow in the filtered container at last, test period (being the motor-drive pump pump oil time) is Ttest, read the differential pressure gauge reading after time through Ttest and be designated as Δ P, also do not have obstruction through Ttest time after-filter, according to the appearance of the filter ash discharge curve appearance ash amount of the pairing filter of Δ P as can be known, be designated as Mtest, life-span is consistent and reach certain value and be designated as Tlife when filter series connection is used, the maximum of filter is held grey amount should reach Mmax=Mtest * Tlife/Ttest, thereby the maximum that draws three different model filters is held the ash amount, and then draw the optimum composition method of three filters, fuel oil after the filtration can carry out Quality Detection, and uses the corresponding index of fuel oil to compare with motor, finishes the combination property evaluation and test to the three-stage filtration device, fuel oil after the filtration also can continue to use, and has saved cost.Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:

1, since the utility model by container before filtering is set, container before filtering is connected with the three-stage filtration device through motor-drive pump and flowmeter, the three-stage filtration device is connected with filtered container, through the three-stage filtration device fuel oil that flows through is filtered, detect the correlation values of filtrating equipment simultaneously, thereby draw the optimum composition method of three-stage filtration device, improved the utilization ratio of filter and prolonged working life;

2, the utility model draws the optimum composition method of three-stage filtration device by test, in the working life of having improved filter, has reduced the replacing frequency of filter, thereby has saved cost;

3, the fuel oil after the filtration can continue to use in the utility model, has saved cost;

4, the utility model is simple in structure, and is easy to use, is fit to promote the use of.

Description of drawings

Fig. 1 is the utility model embodiment one a structural representation.

Wherein: 1, container before filtering; 2, motor-drive pump; 3, flowmeter; 4, first filter; 5, first differential pressure gauge; 6, second filter; 7, second differential pressure gauge; 8, the 3rd filter; 9, the 3rd differential pressure gauge; 10, filtered container.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to shown in Figure 1, a kind of fuel oil filter test stand, comprise a container before filtering 1, described container before filtering delivery outlet is connected with the three-stage filtration device through motor-drive pump 2 and flowmeter 3, described three-stage filtration device outlet is connected with filtered container 10, described three-stage filtration device comprises first filter 4, second filter 6 and the 3rd filter 8 of series connection successively, cooperates with described first, second and third filter also to be connected with first differential pressure gauge 5, second differential pressure gauge 7 and the 3rd differential pressure gauge 9 respectively.

This test stand in use, (filter precision is respectively 7 μ at first to select three brand-new filters, 4 μ and 2 μ, and allow filter producer that the appearance ash discharge curve of three filters is provided, holding grey discharge curve must obtain according to code tests such as SAE J905), unlatching motor-drive pump 2 also picks up counting, test in the container before filtering 1 uses fuel oil under the effect of motor-drive pump 2, with constant flow rate Qtest successively through three filters, flow at last in the filtered container 10, test period (being the motor-drive pump 2 pumps oil times) is Ttest, wherein constant flow rate Qtest is 200LPH (or decide through consultation with filter producer), test period Ttest is 2hr. (or decide through consultation with filter producer), read three differential pressure gauge readings after time through Ttest and (be designated as Δ P I respectively, Δ P II and Δ P III, because test period Ttest is shorter, through Ttest three all also no obstructions of filters after the time, according to holding grey discharge curve Δ P I as can be known, the appearance ash amount of Δ P II and pairing three filters of Δ PIII, be designated as M I test respectively, M II test and MIII test), stop motor-drive pump 2 after reading reading, life-span is consistent and reach certain value and (be designated as Tlife when the series connection of three filters is used, it is fixed that the Tlife value is come according to company objective), the maximum of three filters is held grey amount should reach M I MAX=M I test * Tlife/Ttest respectively, M II MAX=M II test * Tlife/Ttest and MIIIMAX=MIIItest * Tlife/Ttest, like this, the optimized project that obtains compound mode one by test is: the maximum ash amount M I MAX that holds of filter I filter precision 7 μ, the maximum ash amount M II MAX that holds of filter II filter precision 4 μ, the maximum ash amount MIIIMAX that holds of filter III filter precision 2 μ.

Claims

1. fuel oil filter test stand, it is characterized in that: comprise a container before filtering (1), described container before filtering (1) delivery outlet is connected with the three-stage filtration device through motor-drive pump (2) and flowmeter (3), and described three-stage filtration device outlet is connected with filtered container (10).

2. a kind of fuel oil filtration test platform according to claim 1, it is characterized in that: described three-stage filtration device comprises first filter (4), second filter (6) and the 3rd filter (8) of series connection successively, cooperates with described first, second and third filter also to be connected with first differential pressure gauge (5), second differential pressure gauge (7) and the 3rd differential pressure gauge (9) respectively.