JSY two-stage double-suction centrifugal process pump-Shenyang Petrochemical Power Station Pump Co., Ltd

JSY two-stage double-suction centrifugal process pump

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Chemical and other parts

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Detail

Overview
In order to meet the needs of localization of equipment in the reconstruction and expansion of China's refineries as soon as possible, our factory has developed JSY series centrifugal process pumps, which are in full compliance with API610 standards and are mainly applicable to atmospheric tower bottom pumps, crude oil pumps, vacuum tower bottom pumps, etc. in refineries. This series of products has the characteristics of high reliability, high generalization and long service life.
Performance range
Flow rate:Q = 600 ~ 1700m ³/h
Head: H = 250~370m
Use temperature: T =-45 ℃ ~ 450 ℃
Model Description

Structural features
The JSY type process pump is a radial split volute type two-stage double suction two-end support structure.
The shell is radially split volute type, and its installation method is horizontal center support, especially suitable for conveying high temperature, high pressure and flammable, explosive or toxic liquids. The suction flange and discharge flange of the pump are cast on the pump body and are vertically upward. The shaft seal cavity (stuffing box) and the pump cover are cast into one body. It can be equipped with packing seal and balanced, bellows or series mechanical seal. An optional water-cooled chamber jacket is cast outside the shaft seal cavity. The water-cooled jacket must be equipped with special requirements or when the temperature of the conveying medium is water exceeding 66 ℃ and the temperature of hydrocarbons exceeding 120 ℃.
The impeller is integrally cast and is balanced with the rotor. It is driven by a key with the shaft, and the rotor is supported at both ends.
In order to repair the impeller, bearing, shaft seal, etc. without dismantling the suction or discharge pipeline, JSY type process pump adopts flexible diaphragm type extended coupling parts, and is conical fit with the pump shaft, which is very convenient for disassembly and assembly.
The bearing body of this series pump has two structural forms, one is radial ball bearing and radial thrust bearing; the other is radial sliding bearing and radial thrust ball bearing.
Pump steering
Looking from the prime mover to the pump, the pump rotates counterclockwise.
JSY type process pump performance parameter table

Pump type	Flow rate Q （m³/h）	head H （m）	Rotational speed n （r/min）	efficiency η （%）	Cavitation allowance (NPSH)r （m）	Shaft power （kW）	Motor power （kW）	Pump weight （kg）
JSY750-350	750	350	2970	80	8.0	893	1000	3200
JSY750-350A	711	315	2970	79	7.5	772	900	3200
JSY750-350B	670	280	2970	78	7	655	710	3200
JSY900-350	900	350	2970	81	6.5	1059	1120	3800
JSY900-350A	854	315	2970	80	6	915	1000	3800
JSY900-350B	805	280	2970	79	5.5	777	900	3800
JSY1200-350	1200	350	2970	81	5.5	1412	1600	4200
JSY1200-350A	1138	315	2970	80	5	1220	1400	4200
JSY1200-350B	1073	280	2970	79	4.5	1035	1120	4200
JSY1400-380	1400	380	2970	84	9.3	1724	1900	5400

Note: The shaft power and motor power listed in the table are calculated when the specific gravity of the medium is 1.0. All pumps can also be equipped with cutting impellers. Any explosion-proof motor model and power when the specific gravity of the medium is greater than 1 or less than 1.