Hydraulic oil filtration system

1, oil filter at startup, care should be taken not to pump reverse, so as to avoid blowing out oil pump shaft seal cause inhaled air. 

2, oil filter in use during the pump sucks in air, affecting oil pump, in order to achieve the rated flow oil filter and a commitment to works of fine filter elements, please check that the filter pipeline is plugged in. 

3, oil filter used for a period of time, as a result of coarse filter pollutants badly clogged due to poor surface and oil absorption (lack of oil), oil pump caused by excessive noise, please stop machine to remove oil filter cleaning or replacement filter cartridge. 

4, fine filter to use for a period of time, susceptible to pollutants gradually blocked, causing the filter drum pressure rise when pressure gauge values up to 0.4MPa, need timely replacement of fine filter. 

5, in order to guarantee the oil filter effect used oil, oil-absorbing hoses should be always kept clean.

 6, if the oil cars could not enter the oil filter, check finds that: 
A, shift transmission oil pump is correct; 
B, fuel tanks to port between the reliability of components sealed, oil suction leave oil or oil has been finished or sucker suck barrel wall; 
C, coarse filter is seriously blocked. 
D, oil pump shaft seal for damage. 

7, oil filter car traffic significantly reduces, please check finds that: 
A, coarse and fine filter filter is blocked serious; 
B, oil pump shaft oil seal wear and tear or due to long time anti-causing blowing out instead. 

8, filter pressure suddenly dropped, check the fine filter elements for breakdown damage
Lubricating oil purificationInsulating oil Purification,
 Turbine oil purificationWaste engine oil purification


The principal purpose of vacuum dehydration and purification can be to reduce free, emulsified, and dissolved water from oil, too as reliable particulate contamination. The secondary purpose of the method is te extraction of air, gases, and lumination hydrocarbon contamination in the oil. These functions are achieved utilizing the principles of minimal temperature vacuum distillation and micronic filtration

Vacuum Dehydration - numerous are mindful that vacuum dehydration will remove free, emulsified and dissolved water from their lubricants. In numerous cases, high high quality vacuum dehydration units can acquire basic water content as minimal as twenty components per million. However, vacuum dehydrators also serve other functions. High high quality vacuum dehydrators are equipped with high efficiency filters that can acquire particle counts as minimal as ISO 14/12/9. In addition, refrigerants, solvents and fuels are removed by vacuum dehydration.

High-Vacuum Transformer Oil Filtration And Dehydration Plants are suitable for all types of electrical insulating oils. We have standard high-vacuum filtration and dehydration plants to remove moisture (free as well as dissolved), gases, dirt and oxidation products from mineral-based and synthetic, silicon oils and others. Systems are in flow rates from 300 LPH to 12000 LPH.

In order to acquire optimal dielectric strength and insulating efficiency inside of transformers and circuit breakers, dielectric oils should be kept absolutely clean up and dry. ZHONGNENG designs and builds the most effective, durable, and easily operation high vacuum transformer essential oil purification method available on the market today. Transformer essential oil remedy plant means?Old transformer essential oil is generally mixed with gas, water and contaminants, and also the new transformer essential oil sometimes, the content of the contaminants generally raises fast by time. So the transformer essential oil remedy machines can remove these associated gases, water and contaminants, and separate them in the essential oil and consider them away. After treating the essential oil by our essential oil remedy plant, the stabilized essential oil is then again ready to become used in energy transformers.

Custom built plants can be provided as per customer’s specific requirement, such as more flow-rates. These plants work on low temperature, high vacuum principle. Plants mainly consist of heating, filtration and vacuum system. Heating system aids to the filtration and moisture removal. Filtration systems remove suspended particles down to 1 micron such as rust, dirt, scales, colloidal carbon etc. Vacuum Systems remove moisture (emulsified as well as dissolved) down to < 5 – 10 ppm depending on the working vacuum of the plant.

Technology and benefits of the model:
1: It is for treating a range of insulating oil, including transformer oil, mutual inductor oil, change oil.
2: It is extensively applied in large scale manufacturing factory, energy station and other related industrial fields which will use transformers, specifically for more than 110 KV transformers.
3: Double point vacuum system, adopt international remarkable duplex stereo-evaparation technology and british G technology to eliminate the trace water in insulation essential oil and recover its breakdown voltage greatly.
4: Adopt Germany's 3 UG phase replay, will make the machine functioning efficaciously and safely at any situations, such as energy off, lack of phase, wrong phase position, etc.
5: Equipped with remarkable dielectric condensation devices for greatly prolong the essential oil purifier provider life.
6: A trinity of interlocked preventive unit is applied for avoid the machine becoming damanged from any incident automatically.
7: It also can be used becoming a separate vacuum method for dehydrating essential oil only, don't should operate all procedure and can save time and consumption for different ask on essential oil filtration.
8: it may purpose onsite using the transformer operating together.
9: A PLC method can be attached as per customer's requirement.
10: it may be moved easily with equipped steel wheels, it also can be created for different structure of completely enclosed type and completely enclosed trailer type to the objective of ourdoor use and indoor use.
11. a range of coloring of the model can be produced just as customer's favor.

Plants are available in different types of constructions such as open & enclosed models, stationery, portable & mobile models, with single & double stage degassing / dehydration system.

Contact: Mr. VienZhang
skype: vien_zhang
Tel : 86 13512396086
Fax: 86 23 86197078
Chongqing Zhongneng Oil Purifier Manufacture Co.,Ltd
13 Huoju Street, Jiulong Industrial Park, Jiulongpo District, Chongqing City. China 

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1. Oil temperature control
Working oil temperature is 35 ~ 55 ℃, up to 70 ℃. The adverse effects of high oil temperature:
(1) decline in oil viscosity, oil film damage is damage, friction increases, causing the heating system, the implementation of components (such as hydraulic cylinder) crawling; also lead to increased leakage, significantly reduce the efficiency of the system; oil through the throttle when the characteristics will change, so that the piston velocity is unstable.
(2) thermal expansion of parts caused by high oil temperature, so that the action occurred deputy campaign not working or stuck.
(3) When the oil temperature is over 55 ℃, the increased oil oxidation, reducing the service life, according to tests confirmed that the oil temperature is over 55 ℃ when the temperature is increased after 9 ℃, oil life shortened by half.

2.  filtration control
Oil filter filtration system shall be the maximum sensitivity of the filtration component selection, respectively, in suction, pressure piping, the servo control valve of the inlet, etc., in accordance with the requirements set filtration oil filter.

3. To strengthen the on-site maintenance and management
(1) Check the fluid cleanliness. When checking the cleanliness of equipment, the system should also check the oil, fuel tank and oil filters for cleanliness, and cleanliness on the establishment of hydraulic equipment, in the next three scoring system. The hydraulic system for critical equipment to be random.
(2) the establishment of a hydraulic system maintenance system. Level in the development of equipment maintenance content, to increase the hydraulic unit of the specific maintenance content.
(3) periodic testing of oil samples. Regularly, quantitative extraction of the oil sample, check the unit volume of the oil sample size and number of impurity particles or the weight, and for the qualitative and quantitative analysis to determine whether the oil needs to be replaced.
① Oil sampling time: oil change intervals have been provided for the hydraulic equipment, the week before in the oil of the oil being used for testing samples; the new change of oil, the cumulative work of 1000h, the response to the sample test ; large sophisticated companies in the oil hydraulic equipment used in the use of 600h, should be sampled for testing.
② taking oil samples, first of all necessary equipment to clean the oil container, and not to use dirty containers in order to ensure that data is accurate and specific method of taking oil samples are as follows:
When the hydraulic system does not work (ie in the stationary state), respectively in a tank top, middle and lower samples from each of the same amount of oil, stirring after the laboratory; hydraulic system is working, you can always return pipe in the system port to take the oil sample; tests required number of oil samples, usually 300 ~ 500mL / times; according to laboratory procedures for testing of oil, oil will fill a single laboratory test results, and analysis of fluid caused by changes in physical and chemical indicators of the reasons for exclusion in advance hidden faults, and into the equipment file.

4 regular cleaning. 
Periodically clean the filter, filter, tank, tubing and components within the dirt. Component in the disassembly should pay attention to cleanliness, all ports will be added to the plug or plastic sheeting sealed to prevent dirt intrusion system.

(5) drain intervals.
 Oil change depending on whether the extent of oil contamination, currently there are three ways to determine the oil change period:
① visual oil law. It is the experience with maintenance personnel, according to some of the oil routine visual state changes (such as oil black, stinking, into a white, etc.) to decide whether oil.
② periodic oil change method. Depending on the device where the environmental site conditions, working conditions and the use of oil drain intervals, due to be replaced. This method of hydraulic equipment is applicable to large enterprises.
③ sampling assays. Regular oil sampling for laboratory tests, determination of the necessary items (such as viscosity, acid value, moisture content, particle size and concentration as well as corrosion, etc.) and indicators, according to the actual measured value oil with the required standards of oil degradation compared to determine the Should the oil change. Sampling time: general construction machinery hydraulic system should be in the oil change the week before, key equipment (such as the TBM TBM, etc.) of the hydraulic system should be carried out once every 500h sampling was conducted, results should fill in the equipment technical file . Sampling test method for key equipment and large hydraulic equipment.

Former oil tank to the main house and the old oil pipeline exhausted, and the fuel tank, filter, hoses and other clean. Oil change, pay attention to cleanliness, to prevent the invasion of the hydraulic system of stolen goods, can not be mixed and for the wrong, after testing to confirm or complement the new fuel oil has reached the prescribed performance indicators, in order to join. When fuel oil must be filtered, the filters have been fatigue damage should be replaced.

Add oil to reach the oil tank standard position, fuel is: first fuel to the tank top oil standard line, starting the hydraulic pump motor, the oil supply to the system of pipes, oil tank and then filling to the standard line, and then start the motor, sorepeated, until the oil remained at less than marking up the oil.

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  7. Precision Top-Ups and Drain and Fills 
 Once the bulk storage system is properly set up, one should consider the method for transporting oil and filling machines. The best top-up method utilizes a proper top-up container, one that is sealed from the environment, has a built in spout, hand pump, etc. If short cuts are taken at this stage, all of the time and effort spent building and designing the bulk storage system and ensuring the quality of the bulk oil with filtration will have been wasted. Too many times oil is highly contaminated from the time it is dispensed into the top-up container to the time it is added to the machine.

Using washable and re-usable top-up containers allow for easy cleaning and maintenance. Typically, non-sealable top-up containers that are re-used introduce large amounts of containments to the system, which could counteract any effort of removing or excluding contaminants, and also can have a slight lubricant cross-contamination effect.

For top-ups of larger sump volumes, such as large gearboxes, circulating system reservoirs, etc., the use of filter carts is the preferred method for transferring the new oil from the storage container to the machine.

8. Proper Top-Up Container and Grease Gun Storage 
 Storage for top-up containers, grease guns, rags, etc., is another important step to ensure contaminants are not introduced to the lubricants as a result of poor housekeeping. These tools should have their own dedicated fire-proof storage cabinets for easy access and organization.

Grease storage is simpler than oil storage but also must not go overlooked. Open grease tubes and drums are magnets for attracting airborne contaminants such as lint and dust. Securing used grease tubes that will be re-used in sealable washable containers is considered the best practice. The containers will hold one tube of grease and allow for great contaminant exclusion. Used drums of grease are at an even higher risk of contamination. These drums are often opened and used over a greater period of time, leading to more and more opportunities for contaminants to enter. If not using a sealed air style grease dispensing unit for drums of grease to fill grease guns, some of the best methods for contaminant exclusion are to use Velcro style covers or snap-on caps. Using these types of contaminant exclusion devices will keep the grease cleaner and prolong its life.

Grease guns should be stored in a clean, dry and controlled environment. They are precision tools that must be taken care of in order for them to provide the maximum degree of accuracy and reliability. Grease guns should be regularly cleaned and inspected for proper function and an annual calibration should be performed. This calibration will ensure the same volume of grease is still being dispensed with one shot as when the gun was new. The best method for grease gun calibration is to use a postal scale to measure how much grease is dispensed with one pump.

Lubrication tools should be stored in a fire-proof storage cabinet for easy access and organization.

(by Stephen Sumerlin) 
to be continue...

The Double-horizontal vacuum evaporation vessels can enlarge evaporation area efficiently. The heater, being places in the vacuum vessels, becomes an evaporator. Thus the evaporation areas of Double-horizontal vacuum vessels are three times more than of the common vacuum vessel. This innovation can dehydrate and degas effectively and separately. This optimal structure of the dehydration (degas) system enlarge the surface area of oil exposed to the vacuum system and extends the flowing distance of the oil in the vacuum system. Thus there has sufficient time to remove the moisture and gas from the oil by vaporization.
Filtering system
The filtering materials with variable apertures are made of specialized glass fiber.the sizaes of the filtering fiber and aperture dwindle gradually in the different filtering stages. The impurities with different particulate sizes are filtered step by step.the capability of removing particulate matters is improved greatly by this method.
The filtering system has stable and perfect filter fineness. The filter fineness has several grades. Including μm etc.
The filtering system is equipped with reverse rinse and filth device.it improves the effectiveness filtering and extends the lifetime of filter awfully
Electrical apparatus controlling system
The main components of the electrical apparatus made by Siemens, Schneider company ensure the safety of the controlling system .having interlocked protective system, pressure protective device which will avoid overload,over voltage,blank pumping,blank heating,oil leak and electricity leak etc.
Oil heating system
The unique effective electric heater structure heats the oil uniformly
Oil heater system assures less than 1.0w/cm2.during the heating process, the deterioration of the oil cuased by overheating is avoided.
The oil temperature can be adjusted between 0℃ to 100℃.the heater is controlled manually or automatically .the heater will stop automatically when the oil temperature reaches a certain degree
Being installed with safety protection devices, the heating system is secure and reliable.the heater will stop operation automatically when the oil volume of inlet is too much to avoid the damages of the heater
Oil-level controlling system
The oil-level floating ball and double-infrared liquid level automatic controller system are installed in the vacuum vessel to control the oil level so as to avoid the oil leaking in the operation.
The new innovation of eliminating forth can avoid the oil ejecting and gushing during the process.
High quality components
The main component parts of our products such as vavuum pump ,oil pump, motor and electric apparatus are from SIEMENS, ABB, SCHNEIDER, LEYBOLD and AMICO etc. They ensure our products high quality and reliability.
Structure and apparatus of oil purifier
Our products adopt ship-shape chasis-mount structure to ensure oil leak proof and protect the environment from pollution.
The whole equipment is characterized by small size.light weight and convenient to move around.various sizes and configurations (alloy shield) available
Vailable in mobile or stationary options
Automatic vacuum oil purifier or anti-explosion vacuum oil purifier is both available according to customers' need.
Cooler, medium condenser system
The system is composed of cooler .condenser,water receiver etc.
The vapor and other gas ,which is evaporated from vacuum separator, first drop in temperature and are rid of moisture in condenser, then are condensed again in cooler which has retarded exchange media .the reductive condensed water are discharged by water receiver,the dry gas ,which are condensed and rid of moisture twice,are discharged to air by vacuum pump so that it protects vacuum pump.
The plant is characterized by small size,light weight,rich color, and our company can produce trail car type and closed type (alloy shield) according to the customer's requirement.
 In order to make sure that the stable of oil purifier plant which can work long time and extend the life of the machine, the oil purifier's main parts such as electric control parts, electric motor, vacuum pump,oil pump are imported from SIEMENS,LEYBOLD,ABB etc.