G2 Series Diaphragm Oxygen Compressor

• Structure Type: Diaphragm
• Transport Package: Standard Seaworthy Packing
• Trademark: DSW
• Origin: China
• Model NO.: G2
• HS Code: 8414809090

Product Description

G2 series diaphragm compressor feature:
           
Small diaphragm compressors:            
Structure: Z,L, P.D type            
Lubrication: Splash            
Oil type: complusory oil supplement            
cooling way: water cooled or air cooled            
maintenance maximum weight per piece: 100kg            
maintenance maximum space: the circle shall be not less than 1 m

	Model	Flow rate	Inlet pressure	Outlet pressure	Water waste	speed of crankshaft	Motor Power	Size	Machine weight
No:		Nm3/h	Mpa(G)	Mpa(G)	L/h	r/min	KW	LxWxH mm	kg
1	GL2-20/200	20	normal pressure	20	700	400	7.5	1700x850x1150	1100
2	GL1-5/200	40	normal pressure	1.3	700	400	7.5	1700x850x1150	1200
3	GL2-40/13-200	40	1.3	20	700	400	7.5	1700x850x1150	1000
4	GL2-25/1-160	25	0.1	16	1000	400	11	1700x850x1150	1100
5	GL2-40/4-160	40	0.4	16	1000	400	11	1700x850x1150	1050
6	GL2-50/7-160	50	0.7	16	1200	400	11	1700x850x1150	1000
7	GL2-40/7-320	40	0.7	32	1200	420	11	1700x850x1150	900
8	GL2-60/12-160	60	1.2	16	1000	360	11	1700x850x1150	900
9	GL2-40/13-400	40	1.3	40	1000	400	11	1700x850x1150	900
10	GL2-30/4-350	30	0.4	35	1000	420	11	1700x850x1150	900
11	GD2-60/30-400	60	3	40	1200	400	11	1700x850x1150	850
12	GL2-15/350	15	0	35	1500	400	18.5	1700x1200x1150	1500
13	GZ2-10/10-150	10	1	15	400	420	4	1400x850x1150	800
14	GZ2-15/13	15	normal pressure	1.3	400	400	4	1400x850x1150	800
15	GZ2-15/13-200	15	1.3	20	400	400	4	1400x850x1150	750
16	GZ2-40/4-30	40	0.4	3	400	400	4	1400x850x1150	800
17	GZ2-20/30-400	20	3	40	400	400	4	1400x850x1150	700
18	GZ2-12/160-1000	12	16	100	500	400	5.5	1400x850x1150	700

General information of structure

   Diaphragm compressor mainly consists of crankcase, connecting rod, cross-head, piston, cylinder body, cooler and its pipeline, base plate, instrumentation, electric motor etc. The compressor structure is divided into 4 types---L, Z, V and D, according to cylinder body arrangement. 
L type diaphragm compressor's vertical and horizontal cylinders form L. (Please refer to the picture)
Z type diaphragm compressor only consists of vertical cylinders, and this structure looks like the letter "Z". (Please refer to the picture)
V type diaphragm compressor's left and right cylinders form V. (Please refer to the picture)
D type diaphragm compressor is the balanced opposed frame, the cylinder body number can be 2, 3 or 4. (Please refer to the picture. This is the 4 cylinders type)


Main technical data

Cylinder 
All the cylinders comprise upper plate, diaphragms, and cylinder body etc. The diaphragms are clamped between the cylinder cover and cylinder body. The cylinder cover and cylinder body each has a concave recess hollowed out in their contacting faces. The gas cylinder is formed between cylinder cover concave recess and diaphragms. Both suction valve and discharge valve are fitted on the upper plate. Among of them, the discharge valve is located on the center of the upper plate. The evenly located small oil holes are on the cylinder body to deliver the oil pressure inside the oil cylinder to the diaphragms. 


Pressure Regulating Valve 
The oil pressure of oil cylinder is regulated by the tension of the valve spring.In case the oil pressure is higher than the regulated value, turn the regulating bolt counter-clockwise to loosen the spring tension, but turn the regulating bolt clockwise to tighten the spring, when the oil pressure is lower than the regulated value. When the oil pressure meets the required value, the regulating bolt must be locked with a lock-nut. The oil pressure of the oil cylinder shall always be higher than the discharge pressure by 15~20%. But the oil and gas differential pressure shall not be lower than 0.3MPa or higher than 1.5MPa. 

Cooler
The cooler structure is the double-wall pipe type. The circular space between the outer and inner pipe is the cooling water passage and the inner pipe is the gas passage. Normally the water inlet port is at the lower side and the water outlet port is at the upper side. The flow direction of cooling water and gas is on the contrary.

Oil Pressure Measuring Device 
The measuring device of oil cylinder discharge pressure consists of shock-proof pressure gauge, check valve and unloading valve. The case of the pressure gauge is totally airproof and filled with damping liquid. The inner devices of gauge is immersed in the liquid, which makes the pressure gauge hands stable through the function of the viscosity of damping liquid. The unloading valve is fitted under the gauge to discharge the remained air in the oil pipeline   and to unload the oil pressure gauge. Also the check valve connecting with oil cylinder through pipeline is fitted under the unloading valve.   

Oil pipes 
Oil pipes consist of lube oil pipe and oil pressure secure system.
The lubrication for the driving device adopts gear oil pump circulation pressure lubricating. The lube oil stored in the frame oil tank enters into the gear oil pump after being filtered and is pressed into the oil holes in the crankshaft through the gear oil pump to lubricate the crankshaft friction surface. At the same time, part of the lube oil reaches the crosshead pin and crosshead along the oil holes in the connecting rod to lubricate the friction surface. The oil pressure of gear oil pump shall be kept between 0.3~0.5Mpa, and the bearings at the two ends of crankshaft is splash lubricated. 
Oil pressure secure system consists of oil compensating pipe, pressure-measuring pipe and oil return pipe. The oil output from the oil compensating pump will supplement oil for compressor cylinders through the oil compensating pipe and the excess oil returns to the crankcase through the pressure-regulating valve.


Gas pipes
The gas enters into compressor through inlet port to be compressed and enters into the clients' system after cooling by the cooler.