Double High (low) Pressure Oil Station

Double High (low) Pressure Oil Station

GDR type B series double high (low) pressure thin oil station First, the conditions of use The product is suitable for thin oil lubrication systems with lubricating medium viscosity of 22~460cSt (equivalent to ISO VG22~460): for example, vertical grinding hydrostatic oil film bearings and other...
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Product Details

GDR type B series double high (low) pressure thin oil station

 

First, the conditions of use 

The product is suitable for thin oil lubrication systems with lubricating medium viscosity of 22~460cSt (equivalent to ISO VG22~460): for example, vertical grinding hydrostatic oil film bearings and other mechanical lubrication with hydrostatic oil film bearings.

 

If the two high pressure oil supply ports are combined into one oil supply port, and the two high pressure pumps are changed from one work to one use at the same time (in this case, the high pressure oil supply M is only one pump flow), the M can be used for the need. The high pressure pump continuously operates to float the rotating part (such as the vertical grinding rotor) to form the working condition of the oil raft.

 

Static pressure lubrication relies on the static pressure of the oil to form a pressure oil film in the bearing. It is independent of the motion state and can maintain the liquid friction. a should pay attention to the large flow rate of the double pressure system. The inlet is connected to the outlet of the low pressure pump. When the high pressure pump is started, about 1/4 of the low pressure oil will be sucked away by it, so the pressure of the low pressure supply port will be reduced. It should be considered whether the low pressure supply pressure and flow rate can be reduced after the high pressure pump is started. The work of low pressure lubrication systems.

 

The main performance of this product can be found in the main technical parameter table, system diagram and external dimension chart.

 

Second, the working principle 

The working pressure in the high and low pressure system is determined by the relief valve or the safety valve. It is controlled by the pressure controller during operation to ensure the normal operation of the high and low pressure system.

 

Before the oil station starts, when the oil temperature is low, the electric heater can first turn on the heating oil. When the temperature reaches a certain temperature, the low pressure pump is started, so that the lubricating oil is circulated in the system to the required temperature, and then supplied to the equipment for lubrication: when the low pressure is supplied After the oil pressure reaches the normal value, the pressure pump can be started, and the pressure oil is sent to the static pressure bearing oil chamber through the compensation device. It is controlled by the pressure controller and the host can be started when the pressure reaches the required value. After the host is stopped, the duration of the fuel supply system is controlled by the electric control cabinet. According to different sports characteristics, the oil supply mode after shutdown can be determined.

 

During normal operation of the main engine, the supply pressure of the low-pressure system is controlled by the pressure controller. When it reaches a certain set value, the standby pump is automatically started and put into operation. After the working pressure of the low-pressure system reaches the normal value, the standby pump automatically stops, if it continues to descend to another When the value is not allowed, the pressure controller controls the host to stop and send an alarm signal.

 

Platinum thermal resistance is installed on the fuel tank and the low-pressure fuel supply pipe, and the heater and the Lennon cooler are controlled, and the operation is started manually or automatically, and there is an alarm signal. The electric heater is sheathed to avoid carbonation on the surface of the heater. When replacing and repairing, it does not affect the normal operation of the main tank. The coarse and fine double-tube filters are all in one cylinder, one cylinder is reserved, and controlled by a differential pressure controller. Report, change the filter cartridge in the work tube without switching.

 

The fuel tank is equipped with a liquid level controller to control the highest and lowest oil levels. When the oil level is high and low, the nickname is issued: When the oil level is low, the fuel tank must be refueled immediately to avoid the air pump sucking.

 

Third, the structural characteristics 

The high-pressure oil source of the thin oil station is provided by the low-pressure oil pipeline. The low-pressure working pressure of the thin oil station is 0.4MPa, and the high-pressure system is 31.5MPa. The working pressure and flow of the high-pressure system can be adjusted according to the working requirements of the static-pressure oil film bearing.

 

The oil station consists of a fuel tank, a low pressure oil pump (two units, one for one), a high pressure oil pump (two units), a double cylinder coarse mesh filter, and a double cylinder fine oil filter (one or two). , tube-type oil cooler, (compensation device) and valves, pipelines, etc., the gas station is integrated.

 

When the oil station is in normal operation, the low-pressure pump works one machine, one spare, and two high-pressure pumps work at the same time. According to the needs of different equipment, if the high-pressure continuous operation is combined into one outlet, the high-pressure pump can also be changed to one. Work in the station, one standby: the oil station has the functions of filtering, heating, cooling, interlocking, automatic control, alarm and so on.

 

The device is composed of a thin oil lubrication station, an instrument panel and an electric control cabinet.

 

The oil station has a high degree of automation, and there are two control modes of PLC and relay for selection. The PLC control type has DCS interface.

 

The main technical parameters

Model / parameter

GDR-B
     30×2/250

GDR-B
     30×2/315

GDR-B
     40×2/400

GDR-B
     50×2/440

GDR-B
     60×2/500

Low voltage system

flow(L/min)

250

315

400

440

500

Oil supply pressure
     (MPa)

≤0.4

Fuel supply temperature(℃)

40 ± 3

motor

Model

Y132M-4

Y160M-4

Y160L-4

power(kW)

7.5

11

15

Rotating speed
     (r/min>

1450

Fuel tank effective volume(m3)

3.3

4.2

5.2

5.7

6.5

 

High pressure system

flow(L/min>

30×2

30×2

40×2

50×2

60×2

Oil supply pressure(MPa)

31.5

motor

Model

Y160L-4,B35

Y180V-4,B35

Y180L-4,  B35

Y200L-4,  B35

power(kW)

15×2

18.5×2

22×2

30×2

Rotating speed
     (r/min)

1460

1470

1470

1470

Rough filter accuracy(mm)

0.08 (Low pressure outlet)

Fine filtration(mm)

≤0.04 (High pressure inlet)One fine filter (or two)
     The filtration area is determined according to the high-pressure actual demand flow. The number of units is determined according to the structure.

Cooling area(㎡)

16

28

35

40

45

Cooling water consumption(m³/h)

22.5

28.5

36

40

45

Electric heating power(kW>

24

30

36

36

42

Remarks

When the actual oil viscosity is ≥320cSt, the low-pressure pump power should be increased by one step; the filter switching pressure difference is 0.15MPa.


Outline structure and size

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model

DN1

DN2

DN3

DN4

L

L1

L2

L3

L4

L5

B

B1

GDR-B30×2/250

20

65

150

65

2700

2900

150

150

250

150

1400

1850

GDR-B30×2/315

20

65

200

65

2800

3000

150

150

250

150

1600

2050

GDR-B40×2/400

25

65

200

100

3300

3920

200

200

300

200

1800

2310

GDR-B50×2/440

25

65

200

100

3500

4120

200

200

300

200

1800

2310

GDR-B60×2/500

32

65

250

100

3850

4470

200

200

300

200

1900

2410

 

model

B2

B3

B4

B5

H

H1

H2

H3

H4

H5

H6

H7

H8

GDR-B30×2/250

925

360

150

350

1200

1700

1485

1030

1596

600

200

250

500

GDR-B30×2/315

1025

460

250

350

1200

1700

1485

1030

1536

600

200

250

500

GDR-B40×2/400

1110

650

250

450

1260

1740

1485

1040

1636

590

235

300

500

GDR-B50×2/440

1110

650

250

450

1260

1740

1485

1040

1636

590

235

300

500

GDR-B60×2/500

1160

700

250

450

1260

1740

1485

1040

1636

590

235

300

500

Electric control cabinet

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