CN219209268U - Lubricating oil system adopting step-by-step purification technology - Google Patents

Abstract

The application discloses lubricating oil system who adopts purification technology step by step, including the body, concatenate a plurality of filter elements on the body, the inlet valve, the outlet valve, main oil pump and oil discharge pump, the lubricating oil that needs to purify lets in from the inlet valve one side of body, the filtration through a plurality of filter elements reaches the qualified purpose of oil, finally discharge from body outlet valve one side, main oil pump is used for flowing in the body for oil and increases power, oil discharge pump is arranged in the residual oil discharge in the system when shutting down the maintenance. The utility model provides a filter element that improves in proper order through concatenating a plurality of filter fineness on the body can carry out hierarchical filtration to impurity in every filter element to reduced the filtration pressure of single filter element, avoided among the prior art filter core to stop seriously, need frequently stop and change circumstances such as filter screen filter paper, secondly, carry out multistage filtration to lubricating oil and more can promote the oil quality after filtering, be favorable to improving unit life, be favorable to safety in production.

Description

Lubricating oil system adopting step-by-step purification technology

Technical Field

The application relates to the technical field of lubricating oil treatment, in particular to a lubricating oil system adopting a step-by-step purification technology.

Background

The oil filter is a filter device for removing mechanical impurities, oxidation byproducts and moisture in the impure oil by technical methods such as gravity, centrifugation, pressure, vacuum distillation, mass transfer and the like. The oil filter is used for improving the cleanliness of oil for machinery and electric appliances, enabling the oil to exert the best performance, prolonging the service life of equipment, filtering and purifying polluted oil products, and recovering or improving the properties of the oil products. The oil-using equipment comprises cleanliness, water content, gas content, acid value, viscosity, flash point, insulating strength, color and the like of the oil product, and can effectively remove impurities in the oil product to ensure the safe operation of the oil-using equipment.

It is mainly applicable to various departments of mines, metallurgy, petroleum, railway, machinery, chemical industry, textile, cement, power plants, instruments and the like. The purifying and regenerating device has great effect on purifying and regenerating various industrial lubricating oils with pollution and degradation, prolongs the maintenance period and service life of equipment and reduces production cost. Can effectively remove pollutants in oil products, such as: water, water-soluble acid, alkali, mechanical impurities and the like, and improves the kinematic viscosity, flash point and emulsification resistance of the oil product. The oil product can be quickly recovered to the required service performance, and the new oil standard of the corresponding country is approached or reached.

At present, the large-scale power plant turbine unit oil tank is large in size, and an online oil filter or a pressure oil filter is generally adopted for filtering impurities, but due to the fact that the structure is simple, the standard is behind, the filter element has poor dirt receiving capacity, the blockage is serious, the oil product is not up to standard due to long-term use, the filter element is frequently stopped for replacing filter paper, the labor intensity of personnel is high, the cost is high, and safety production is not facilitated.

Disclosure of Invention

Based on this, it is necessary to propose a lubrication oil system employing a progressive purification technique in view of the above technical problems.

A lubricating oil system adopting a step-by-step purification technology comprises a pipe body and a plurality of filtering pieces connected in series on the pipe body, wherein the filtering precision of the filtering pieces is gradually improved along the flowing direction of fluid in the pipe body.

In some embodiments, the filter comprises at least:

a coarse filter with a filtering precision not less than 0.1mm;

a fine filter having a filtration accuracy of not less than 10 μm;

the outlet fine filter has a filtering accuracy of not less than 5 μm.

In some embodiments, the filter further comprises:

an automatic back flushing filter with a filtering precision not lower than 32 μm;

the coalescence-separation dehydration filter is used for removing water in the fluid, and the filtering precision is not less than 8 mu m.

In some embodiments, a lubrication oil system employing a progressive purification technique further comprises:

the inlet valve is arranged on the pipe body and is positioned at one side of the coarse filter far away from the fine filter;

and the outlet valve is arranged on the pipe body and is positioned at one side of the outlet fine filter far away from the fine filter.

In some embodiments, a lubrication oil system employing a progressive purification technique further comprises:

the main oil pump is arranged on the pipe body;

an oil discharge pipeline connected to the filter element;

the oil discharge pump is arranged on the oil discharge pipeline.

Compared with the prior art, the beneficial effects of this application are:

firstly, through concatenating a plurality of filter elements that filter fineness improves in proper order on the body, can carry out the hierarchical filtration to impurity in every filter element to reduced the filtration pressure of single filter element, avoided among the prior art filter core to stop seriously, need frequently stop the circumstances such as change filter screen filter paper, secondly, carry out multistage filtration to lubricating oil and more can promote the oil quality after filtering, be favorable to improving unit life, be favorable to safety in production.

Drawings

FIG. 1 is a schematic diagram of an exemplary embodiment of the present application;

FIG. 2 is a schematic diagram of the installation of three parallel cartridges in an exemplary embodiment of the present application.

In the figure: 1. a tube body; 11. an inlet valve; 12. an outlet valve; 13. a main oil pump; 14. a discharge pump; 21. a coarse filter; 22. automatically backwashing the filter; 221. an automatic back flushing blow-down valve; 222. an automatic back flushing oil drain valve; 23. a fine filter; 24. a coalescing separation dehydration filter; 241. a separator inlet valve; 25. and (3) an outlet fine filter.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

As described in the background art, at present, the large-scale power plant turbine unit oil tank is large in size, and an online oil filter or a pressure oil filter is generally adopted for filtering impurities, but due to the fact that the structure is simple, the standard is behind, the pollution-receiving capacity of a filter element is poor, the blockage is serious, the oil product is not up to standard due to long-term use, frequent shutdown is caused for replacing filter paper of the filter screen, the labor intensity of personnel is high, the cost is high, and safety production is not facilitated.

To improve the above problems, the present application proposes a lubricating oil system employing a progressive purification technique, which mainly comprises: the oil purifying device comprises a pipe body 1, a plurality of filtering pieces, an inlet valve 11, an outlet valve 12, a main oil pump 13 and an oil discharge pump 14 which are connected in series on the pipe body 1, wherein lubricating oil to be purified is introduced from one side of the inlet valve 11 of the pipe body 1, the lubricating oil is filtered by the filtering pieces, the purpose of qualified oil is achieved, the lubricating oil is finally discharged from one side of the outlet valve 12 of the pipe body 1, the main oil pump 13 is used for increasing power for oil flowing in the pipe body 1, and the oil discharge pump 14 is used for discharging residual oil in a system during shutdown maintenance.

Specifically, in the exemplary embodiment, the material of the pipe body 1 is stainless steel, which can meet the use requirement of the system.

In the exemplary embodiment, the filter elements specifically include a coarse filter 21, an automatic back flushing filter 22, a fine filter 23, a coalescing separation dehydration filter 24 and an outlet fine filter 25, wherein the filtering precision of the five filter elements is sequentially improved and sequentially connected to the pipe body 1 in series. The arrangement can carry out graded filtration on impurities in each filter piece, thereby reducing the filtration pressure of a single filter piece and avoiding the conditions of serious filter element blockage, frequent shutdown and replacement of filter screen paper and the like in the prior art.

Specifically, in the exemplary embodiment, the filter accuracy of the strainer 21 is not less than 0.1mm, the filter accuracy of the automatic backwash filter is not less than 32 μm, the filter accuracy of the fine filter 23 is not less than 10 μm, the filter accuracy of the coalescing separation dehydration filter 24 is not less than 8 μm, and the filter accuracy of the outlet fine filter 25 is not less than 5 μm.

Further, in the present exemplary embodiment, the strainer 21 adopts a stainless steel stamping member as a skeleton, and a stainless steel wire mesh with a wire mesh diameter of 0.1mm is installed outside, so that large particles of 0.1mm and above can be filtered out, and subsequent equipment is protected from damage.

Further, in the prior art, the automatic backwash filter 22 is typically comprised of a top cover, oil motor, rack, screen, shroud, cartridge drain fitting, ratchet stepping mechanism, chassis, and the like. The automatic backwash filter 22 operates on the principle: the oil flow radially passes through the filter screen from the outside of the filter screen, most of the filtered oil enters the oil purifying chamber from the oil drain pipe at the bottom of the shell, about 3% of the oil flow is powered by the pressure difference between the back of the filter screen and back flushing oil return, the filter core is driven to continuously operate, and simultaneously, two blades are dragged to alternately operate to generate high-pressure pulses, and sediment on the outer surface of the filter screen is reversely impacted to fall into the dirt collecting chamber. The flushing process is performed sector by sector periodically in the circumferential direction, each flushing cycle being about 7.3-10 seconds. That is, the automatic back flushing filter 22 uses the pressure of the oil liquid as the power to automatically and periodically clean dirt on the filter screen sector by sector, so as to achieve the purpose that the filter screen is not blocked by the automatic cleaning and granular dirt, and the automatic back flushing filter has no external power and can automatically operate. In the exemplary embodiment of the present application, the design flow is 27m ³ And/h, the filtering precision is 32 μm, further referring to fig. 1, the automatic back flush filter 22 further comprises an automatic back flush drain valve 221 and an automatic back flush oil drain valve 222, the automatic back flush drain valve 221 is a valve additionally arranged at the bottom of the automatic back flush filter 22 and used for periodically cleaning the filtered impurities, the on-line cleaning can be realized, the automatic back flush oil drain valve 222 is an adjusting valve additionally arranged at the inlet of the return pump at the outlet of the automatic back flush filter 22, and the flow rate of oil returning from the high pressure side to the low pressure side is adjusted by the opening of the valveAnd (3) regulating the pressure difference between the back of the filter screen and back flushing return oil, and finally controlling the back flushing pulsation frequency.

Further, in the exemplary embodiment of the present application, since the particle impurities of 10 μm-32 μm are the key to wear the bearing bush of the steam turbine and are the components with the largest content in the oil, the multi-layer folding filter screen with inner and outer skeletons is installed in the fine filter 23, and the filtering precision is 10 μm, referring to fig. 2, three parallel filter elements are adopted in the fine filter 23, the flow area of the three parallel filter elements is 8 times that of the common filter elements, the rated flow is 5 times that of the common filter elements, the pollution-receiving area is greatly increased, and the filter elements can be better prevented from being blocked by pollutants.

Further, in the exemplary embodiment of the present application, the coalescing separation dehydration filter 24 has a coalescing filter element and a separation filter element mounted therein. When the oil flows through the coalescing separation dehydration filter 24, the oil undergoes four processes of filtration, coalescence, sedimentation and separation, so that the dual functions of filtering particles and removing water are realized. The coalescing filter element is prepared by properly combining specially treated synthetic fibers and other materials and is specially prepared for turbine oil, and has good hydrophilicity; the oil flows through the coalescing filter element from inside to outside, the particle pollutants in the oil are filtered by the high-precision filter material at the innermost layer, tiny water drops in the oil are aggregated into water drops by the demulsification coalescing layer at the outer surface, the water drops with larger size can settle to the water collecting tank by means of self gravity, and the water drops with smaller size can flow to the separating filter element after falling. The separating filter element is made of stainless steel mesh after special treatment, and has good hydrophobicity. When the oil flows through the separating filter element from outside to inside, the small water drops are effectively intercepted outside the filter element, only the oil passes through the separating filter element, and the water is further separated out. Further, the pipe body 1 is provided with a separator inlet valve 241, which is arranged at the inlet side of the coalescing separation dehydration filter 24, and is used for controlling the flow entering the coalescing separation dehydration filter 24 and controlling the residence time of oil in the coalescing separation dehydration filter 24 so as to achieve better dehydration effect.

Further, in the exemplary embodiment of the present application, the outlet fine filter 25 also adopts the three parallel filter elements as in the fine filter, which has strong dirt receiving capability, and the filtering precision is improved to 5 μm, so that the operation requirement of the turbine oil is completely satisfied, and the granularity of the outlet of the oil filter can reach the standard.

Specifically, in the exemplary embodiment, the main oil pump 13 is disposed on the pipe body 1 and is located at the inlet end of the pipe body 1, the oil drain pipeline includes a plurality of oil drain branches and an oil drain main path that is communicated with the plurality of oil drain branches, the plurality of oil drain branches are respectively connected to the filtering members, the oil drain pump 14 is disposed on the oil drain main path, and after the oil drain pump 14 is started, the residual oil in the system is drained.

In summary, through concatenating a plurality of filter elements that filter fineness improves in proper order on body 1, can carry out the hierarchical filtration to impurity in every filter element to reduced the filtration pressure of single filter element, avoided among the prior art filter core to stop seriously, need frequently stop the circumstances such as change filter screen filter paper, secondly, carry out the multistage filtration to lubricating oil and more can promote the oil quality after filtering, be favorable to improving unit life, be favorable to safety in production.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the present application, but although the present application has been described in detail with reference to the foregoing embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (3)

1. A lubrication oil system employing a progressive purification technique, comprising: the utility model provides a body (1) and concatenate a plurality of filter on body (1), follow the body (1) fluid flow direction, a plurality of the filter's filtration precision improves gradually, the filter includes:

a strainer (21) having a filtration accuracy of not less than 0.1mm;

a fine filter (23) having a filtration accuracy of not less than 10 [ mu ] m;

an outlet fine filter (25) having a filtration accuracy of not less than 5 μm;

an automatic back flushing filter (22) having a filtering accuracy of not less than 32 μm;

a coalescing and separating dehydration filter (24) for removing water from the fluid, and the filtering precision is not less than 8 mu m.

2. A lubrication system employing a progressive purification technique as claimed in claim 1, further comprising:

an inlet valve (11) arranged on the pipe body (1) and positioned at one side of the coarse filter (21) far away from the fine filter (23);

an outlet valve (12) is arranged on the pipe body (1) and is positioned at one side of the outlet fine filter (25) far away from the fine filter (23).

3. A lubrication system employing a progressive purification technique as claimed in claim 1, further comprising:

a main oil pump (13) arranged on the pipe body (1);

an oil discharge pipeline connected to the filter element;

and an oil discharge pump (14) which is arranged on the oil discharge pipeline.

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