Shanghai efficient multifunctional vacuum oil filter

1LYLXJShanghai efficient multifunctional vacuum oil filterpurpose

LYLXJShanghai efficient multifunctional vacuum oil filterIt is the centrifugal purification treatment of all oil products that are easily contaminated by impurities, such as cutting oil, quenching oil, forging oil, drawing oil, circulation system oil, rust proof oil, flushing oil, cold pier oil, cold drawing oil, etc., used in metallurgy, mining, petrochemicals, power, shipbuilding, engineering machinery, automobiles, railway locomotives, mechanical processing, aircraft manufacturing, military and other industries.

IILYLXJworking principle

A high-precision centrifugal filtration device utilizes the high-speed rotation of its centrifugal body to rapidly separate oil, water, and impurities in lubricating oil with different degrees of pollution under different centrifugal forces. In a high-precision centrifugal filtration device, there is a dual spray shaft that only needs the pressure generated by the filtered lubricating oil to provide its driving force. Its speed can reach over 7000 rpm, and the force generated is about 2000 times that of gravity. It directly drives the lubricating oil and pollutants to separate automatically based on the principle of centrifugal force. Hard and sharp abrasive metal impurities, as well as oxides that cause wear on parts or deterioration of lubricating oil, even impurities as small as 1um can be removed. The disadvantage of general filters is that small particles can easily pass through or be blocked by large impurities, causing damage to the machine. The shaft in the centrifugal separator, apart from separating impurities from the oil, does not contain anything else and will not affect the oil and additives. The separated cleaning action will not stop when the device is turned on. Even when the amount of impurities it handles exceeds 5 times that of a typical filter, it can still maintain the cleanliness of the oil, and the additives in the oil can last for a long time without being damaged.

IIILYLXJcharacteristic

1. This model is suitable for a wide range of fluids, including hydraulic oil, lubricating oil, transformer oil, turbine oil, gear oil, etc

2. PLC control, can be set to timed online fully automatic operation processing mode

3. Simple construction, easy maintenance, long service life, all made of aluminum alloy, divided into three main bodies: head cover, movement body, and outer shell, with high temperature resistance and strong resistance to external forces.

4. Easy maintenance, short cleaning time, no filter, greatly reducing waste of manpower and funds, with a service life of over ten years.

5. It can remove impurity particles up to 0.26um and is currently the best product for non consumable purification.

6. The speed of the centrifuge is over 7000 RPM, and the centrifugal force generated is about 2000 times greater than gravity.

7. The designed floating movement utilizes a dual spray shaft to achieve high-speed rotation without any contact or wear, allowing for solid and liquid separation with a particle removal capacity of 0.26um.

8. No filter element, no consumables required, conducive to environmental protection and replacement of parts, thereby greatly reducing maintenance costs. Improve oil quality, significantly extend the service life of lubricating oil, and save oil consumption.

9. Breaking the traditional filtering method, removing the killer oil sludge from the machine, extending machine life, reducing wear and component replacement. For example, after separating impurities smaller than 0.6um, the bearing life can be extended by 10 times!

Equipment Composition

10. Centrifugal separator, PLC control system, oil pump, motor, intermediate oil tank, carrying trolley, pipe fittings, pressure gauge.

LYLXJMain technical parameters

Attention: The external dimensions and weight of the equipment change with the change of technical parameters, and the development is mainly based on physical objects.

Main usage process and maintenance instructions

The maintenance and upkeep procedures for this model are very simple. In terms of operation and use, regular intervals should be set to clean the inner rotor impurity collector, and the impurity thickness of the inner cover should not exceed 35mm to maintain good results.

Stop the oil pump motor and wait for 1-2 minutes for the main rotor to stop rotating.

Loosen the screws, remove the upper cover of the oil purifier, check the O-ring on the upper cover of the oil purifier, and replace it if it is damaged.

Remove the inner rotor, loosen the nut of the inner rotor, remove the acrobatic collection cover of the inner rotor, and allow the remaining oil to flow back into the container or be stored in another basin.

Clean the rotor inner cover and inner sleeve with diesel or wash oil.

Check the O-ring of the inner rotor and replace it if it is damaged.

Reinstall the O-ring inner sleeve nut of the inner rotor and place it on the turning center to check if the rotor rotates freely.

Replace the upper cover, tighten the bolts, start the oil pump motor, and check for oil leakage.

After the motor is started, the pressure should be adjusted to 6-7kg, and listen for the buzzing sound of the main rotor rotating normally. If not, check whether the oil pump motor is normal and whether the oil circuit is blocked.

On site cleaning pictures

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1、 Product Overview

The YDQC series lightweight AC/DC high voltage test transformer is a new type of product produced based on the YDJ (G) type high voltage test transformer of the same type, and improved according to the national standard ZBK41006-89 for test transformers. This series of products has the characteristics of small size, light weight, compact structure, complete functions, and easy use. It is a practical instrument used in power, industrial and mining, scientific research and other departments to conduct power frequency withstand voltage tests and DC leakage tests on various high-voltage electrical equipment, electrical components, and insulation materials. It is the * instrument in high-voltage testing.

2、 Product Structure

The YDQC series lightweight high-voltage test transformer has a single frame iron core. The coil adopts a multi-layer tower structure with the same core cylinder. The primary low-voltage winding is wound on the iron core, and the secondary high-voltage winding is wound on the outside of the low-voltage winding. This coaxial arrangement reduces the coupling loss between the windings. The high-voltage silicon stack is encapsulated in a sleeve using a special process, and the outer shell of the product is made into an octagonal structure that fits well with the core, resulting in an overall beautiful and elegant appearance. The internal and external structures are shown in Figure 1.

Product model meaning

1. Uniform pressure ball; 2-Silicon stack short-circuit rod; 3- High voltage bushing; 4-Oil valve; 5-Shell; 6. 7- Adjust the voltage input to terminals a and x; 8. 9-Instrument measurement of E and F terminals; 10- High voltage tail X terminal; 11- Grounding terminal of transformer casing; 12- High voltage output A terminal; 13- High voltage rectifier silicon stack; 14- Internal pressure equalization ring; 15- Transformer iron core; 16- Primary low-voltage winding; 17- Measuring instrument winding; 18- Secondary high voltage winding; 19- Transformer oil.

3、 Working principle

The YDQC series lightweight high voltage test transformer is a single-phase transformer with connection group number II. The working process of a single high voltage test transformer is to connect the AC 220V (380V for 10KVA and above) voltage to the power control box (platform), and adjust the voltage from 0 to 200V (0 to 400V for 10KVA and above) to the primary winding of the test transformer through the self coupling voltage regulator (attached to the voltage regulator for 50KVA and above) inside the power control box (platform). According to the principle of electromagnetic induction, the high voltage required for the test can be obtained in the high voltage winding of the test transformer. The working principle diagram is shown in Figure 2.

1. Schematic diagram of the working principle of a single YDQC high-voltage test transformer

In the test transformer: a and x are the low voltage input terminals; A. X is the high-voltage output terminal; E. F is the measuring end of the instrument.
2. The working principle of a single AC/DC dual-purpose high-voltage test transformer is shown in Figure 3. As shown in the figure, a high-voltage silicon stack is installed inside the high-voltage bushing, which is connected in series in the high-voltage circuit for high-voltage rectification to obtain high DC voltage. When a short-circuit rod is used to short-circuit the high-voltage silicon stack, AC high voltage can be obtained, and its state is AC output; On the contrary, when the short-circuit rod is pulled out, its state is DC output.
3. The principle of obtaining higher voltage through series excitation of three high-voltage test transformers is shown in Figure 4. The series excitation high-voltage test transformer has great flexibility because the entire test device consists of multiple single series excitation test transformers. Each single test transformer has the characteristics of small size, light weight, and easy transportation. It can be connected in series to form a single test transformer with output voltage several times higher, or used separately. The entire experimental setup requires minimal investment and is cost-effective. As shown in Figure 3, in the series excitation use of three series excitation test transformers, the output voltage of each single test transformer B1, B2, B3 is U, and the secondary test transformers have an excitation winding inside, which is A1, C1 and A2, C2 respectively. When the control voltage is applied to the primary windings a1 and x1 of the * level test transformer B1, the excitation windings A1 and C1 provide power to the primary winding of the test transformer B2, and the excitation windings A2 and C2 of the second level test transformer B2 provide power to the primary winding of the test transformer B3. Due to the grounding of the high-voltage tail and shell of test transformer B1, the second and third level test transformers B2 and B3 are isolated from the ground by insulation brackets. As a result, the output voltages of test transformers B1, B2, and B3 to ground are 1U, 2U, and 3U, respectively.

B1, B2, B3 series excited high-voltage transformers; 1U, 2U, 3U - ground voltage at all levels;
PV high voltage indication table (KV); ZJ1, ZJ2- Insulation bracket.

4、 Usage and precautions

1. The wiring method for conducting power frequency withstand voltage test on YDQC high-voltage test transformer is shown in Figure 5. Before conducting the power frequency withstand voltage test, first select the current limiting resistor (water resistor) based on the rated capacity of the test transformer, and then adjust the distance between the discharge balls according to the high voltage value that the test object needs to apply. In order to improve the measurement accuracy of the applied voltage to the test object, an FRC resistive capacitive voltage divider should be connected to the high voltage side to measure the voltage.

R1, R2- current limiting resistors; Qx - discharge ball gap; Zx - test substance;
FRC resistive capacitive voltage divider; V-voltage divider high pressure gauge.
Connect the working circuit according to Figure 4 and in combination with Figure 2 for the power frequency withstand voltage test. The X end (high voltage tail) of the high-voltage winding of the test transformer, the F end of the instrument measurement winding, the outer shell of the test transformer, and the outer shell of the power control box (platform) must be reliably grounded.
When conducting a power frequency withstand voltage test using three test transformers in series, the primary winding X end of the second and third stage test transformers, the instrument measurement winding F end, and the high-voltage winding X end (high voltage tail) are all connected to the outer shell of the current stage test transformer. The main body of the second and third stage test transformers must be placed on an insulated support. Except for level *, the main body of the second and third level test transformers should not be grounded. The wiring method is shown in Figure 3.
Before connecting to the power supply, the voltage regulator of the power control box (platform) must be set to zero position. After connecting the power supply, the green indicator light will turn on. Press the start button once, and the red indicator light will turn on, indicating that the test transformer has been connected to the control power supply and started to increase the voltage.
Start from zero position and rotate the regulator handwheel clockwise at a constant speed to increase the pressure. The voltage can be increased from zero at a selected rate to 75% of the rated test voltage, and then at a rate of 2% of the rated test voltage per second to reach your desired test voltage. Pay close attention to the indication of the measuring instrument and the condition of the test sample. The time for applying voltage to the test sample is after. The voltage regulator should be returned at a constant speed within a few seconds, and the high voltage should drop below 1/3 of the test voltage. Press the stop button once to stop the high and low voltage output, and then cut off the power cord. The test is complete.

Precautions for the operation process of power frequency withstand voltage test

1. Test personnel should divide responsibilities, set a safe distance at the test site, carefully inspect the grounding of the test sample and test transformer, and assign a dedicated person to monitor safety and observe the status of the test sample.
2. The main parts of the test sample should be cleaned and kept dry to avoid damaging the sample and causing errors in the test values.
3. For the testing of large equipment, it is generally necessary to conduct a no-load test of the test transformer, that is, to increase the voltage to the test voltage without connecting the test sample, in order to calibrate the accuracy of the instrument indication and adjust the ball spacing of the discharge ball gap.
4. When conducting a voltage withstand test, the boosting speed should not be too fast, and sudden pressure should be prevented. For example, if the regulator is not at zero position, it should be suddenly closed, and the power should not be suddenly cut off. Generally, it should be closed when the regulator drops to zero position.
5. During the boost or withstand voltage test, if any of the following abnormal situations are found: 1. The pointer of the voltage and current meter swings greatly, 2. The tested object makes abnormal noises, 3. If the insulation is burnt or smoking, the voltage should be immediately reduced, the power should be cut off, the test should be stopped, and the cause should be identified.
6. When using this product for high-voltage testing, in addition to being familiar with this manual, it is also necessary to strictly follow relevant national standards and operating procedures.

2. The wiring method for conducting DC withstand voltage and leakage tests on YDQ AC/DC dual-purpose high-voltage test transformer is shown in Figure 5. As it is a dual-purpose high-voltage test transformer for both AC and DC, the short-circuit rod of the high-voltage silicon stack should be extracted from the bushing to put the test transformer in a DC output state. Before conducting a DC leakage test, it is advisable to choose the resistance value of the current limiting resistor (water resistor) based on the large rectification of the high-voltage silicon stack, and then select the capacitance value of the high-voltage filtering capacitor according to the requirements of the test object for the DC high-voltage waveform. In order to improve the measurement accuracy of the applied voltage to the test sample, an FRC resistive capacitive voltage divider should be connected to the high voltage side to measure the voltage.

R-current limiting resistor; C-high voltage filtering capacitor; Zx - test substance; G-Silicon stack short-circuit rod;
FRC resistive capacitive voltage divider; V-voltage divider high pressure gauge; UA microampere meter; D-high-voltage rectifier silicon stack.
Connect the working circuit according to Figure 5 and in combination with Figure 3 for the DC leakage test. The X end (high voltage tail) of the high-voltage winding of the test transformer, the F end of the instrument measurement winding, the shell of the test transformer, and the shell of the power control box (platform) must be reliably grounded.

YDQC Test Transformer AC Test Wiring Schematic Diagram

Before connecting to the power supply, the voltage regulator of the power control box (platform) must be set to zero position. After connecting the power, the green indicator light will turn on. Press

Press the start button and the red indicator light will turn on, indicating that the test transformer has been connected to the control power supply and is starting to increase the voltage.
Start from zero position and rotate the regulator handwheel clockwise at a constant speed to increase the pressure. The boosting methods include: fast boosting method, which is the 20S step-by-step boosting method; Slow boost method, i.e. 60S step-by-step boost method; The voltage is increased from zero to the reference voltage at the rated test voltage or rated DC current at the selected boosting speed. During the experiment, close attention should be paid to the indication of the DC high voltage meter, leakage current meter, and the condition of the test object. After the experiment is completed, the high voltage should be uniformly lowered to zero, and the stop button should be pressed once to stop the high and low voltage output, and then the power should be cut off. At this time, a DC high-voltage discharge rod should be used to fully discharge the test sample and the testing device itself.

Precautions for DC leakage test operation process

(1) Test personnel should divide responsibilities, set a safe distance at the test site, carefully inspect the grounding of the test sample and test transformer, and assign a dedicated person to monitor safety and observe the status of the test sample.
(2) Before conducting the experiment on the test sample, all external connections should be removed and fully discharged. The main parts should be cleaned and kept dry to avoid damaging the test sample and causing errors in the test values.
(3) For large capacity test samples (capacitors, ultra long cables, etc.), the voltage should be slowly increased to prevent the microampere meter from being burned out due to excessive charging current of the test sample. If necessary, the microampere meter should be read for stable readings at different voltages by gradually increasing the voltage.
(4) During the experiment, the test object, microampere meter, and testing device should be closely monitored. In case of flickering, breakdown, or other phenomena, the voltage should be immediately reduced, the power should be cut off, and the cause should be identified.

5、 Supporting product selection

The following products are for selection only and require additional pricing at the time of purchase.
1. KZX series power control box capacity: 1KVA-5KVA, input voltage: 220V
2. KZT series power console capacity: 10KVA~300KVA Input voltage: 220V or 380V
3. Digital microampere meter: SWB-II
4. High voltage filtering capacitor: 0.01MF, 40~100KV
5. High voltage DC discharge rod: FBR-70, 140, 210KV
6. Discharge ball gap: Q-50, 100, 150, 200, 250, 500
7. Standard oil test cup: 400ml
8. Folding handcart: 150, 300 types
9. Insulation bracket: 50, 100, 200, 300, 400KV
10. Resistive capacitive voltage divider: FRC-50, 100, 150, 200KV
11. High voltage silicon stack: 2DL-150, 300, 450KV
12. Water resistance: 50, 100

6、 Selection of main experimental equipment

1. Test Transformer
The rated voltage on the high voltage side should not be less than the high test voltage of the test object, and the rated current should not be less than the large capacitor current of the test object. The calculation formula for the capacitance current of the test sample and the required capacity of the test transformer is:

The capacitance Cx of the test sample can be measured by an AC bridge. The capacitance of commonly used test samples shall be selected according to Table 1.

Table 1: Capacitance (pF) of Several Commonly Used Test Samples

2. Pressure regulating equipment
(1) Self coupling voltage regulator. It has a wide voltage regulation range, low power loss, and minimal waveform distortion. The choice of this voltage regulation method is. The capacity of the self coupling voltage regulator is selected based on 0.75 to 1 times the capacity of the test transformer, and is suitable for voltage regulation of test transformers with a capacity of 100KVA or less.
(2) Inductive voltage regulator. Its voltage regulation range is large, the waveform is small, but the structure is complex and expensive. It is used when the capacity of the test transformer is large (such as 100KVA or above).
3. Current limiting resistor
The function of a current limiting resistor is to limit the breaking current when the test object breaks down, thereby protecting the test transformer and preventing the expansion of the fault. The value is based on the high test voltage, selected at 0.5~1 Ω/V (effective value), and the current limiting resistor can be a water resistor. Be careful not to fill the glass tube with water and leave room to prevent it from bursting.
4. Discharge ball gap
There are two ways to arrange the discharge gap: vertical and horizontal. The relationship between the gap spacing S and the diameter D of the ball should be protected within the range of 0.05D ≤ S ≤ 0.5D. The water resistance value on the gap is generally selected as 0.1~1 Ω/V. The purpose of setting the discharge gap is to protect important test samples and limit overvoltage caused by misoperation or test sample breakdown within the allowable range.

7、 Technical instructions for test transformers

1. Environmental conditions for use
The ambient temperature shall not be higher than+40 ℃ and not lower than -20 ℃; The relative humidity of the air is not greater than 90%; Altitude not exceeding 2000 meters;
2. Working voltage
The input voltage of the power control box (unit) is AC 220V or 380V, and the relative error does not exceed ± 10%; (The specific voltage to be used is selected according to the specifications of the test transformer specified by the user)
8、 Accompanying documents

YDQC series test transformer product manual 1 copy
1 copy of product factory test report
1 copy of product qualification certificate
1 copy of packing list