Nanchang City Enhui Medical Hygienic Materials Co., Ltd.
/
/
/
APS Petrochemical Process Pump

  PRODUCTS

All categories

Related Products

There is currently no content to display
Please add data record on website background.

Relevant Information

There is currently no information to display
Please add data record on website background.
1/1
Number of views:
1000

APS Petrochemical Process Pump

Retail price
0.0
Yuan
Market price
0.0
Yuan
Number of views:
1000
Product serial number
Quantity
-
+
Stock:
0
0
1
Product Description
Structure Feature
Technical Data
Precautions
Troubleshooting
Download

APS type petrochemical process centrifugal pump is to meet the requirement of modern construction of petrochemical plant. It is combined the technology with KSB and IR  company and completely designed compliance with API610 standard. It is specialized in delivering crude oil, refined oil, and chemical raw material , intermediate product and end products with the advantage of high reliability, long service life and high performance.

Main Performance Parameters

Outlet diameter                  DN:80-500MM
Capacity                             Q:20-7000 m³/h
Head                                   H:7-300M
Work temperature              T:-200℃-400℃
Solid parameter                  ≤80mg/L
Permissible pressure          ≤5Mpa


.
Description of Pump Type
For example: APS 250-450A-J
APS:  Petrochemical process centrifugal pump
250: pump outlet diameter (mm)
450: standard impeller diameter (mm)
A:    Changed outer diameter of impeller (the max diameter without mark)
L:    vertical mount
J:     Pump speed changed (Maintain the speed without mark)

Pump Supporting program

Construction drawing

We could not find any corresponding parameters, please add them to the properties table
  1. Adopting flexible coupling to connect pump and electrical motorSee detail in API 610 6.2.2
  2. Coupling and shaft is guarded by coupling guard. It is made of non-tapping and non-spark aluminum  plate to ensure enough stiffness so as to bear static point loading of 900N(200lb) without any contact with moving parts (See detail in API 610 6.14)
  3. Pressure pump casing connected by six angle bolt(See detail in API 610 5.1.13), all the major joint of the pump casing use the double end studs(See detail in API 610 5.14)
  4. Tapping is adopted standard  pipe size specification Rpl/2(see detail in API 610 5.1.1)for fittings between piping and pressure casing
  5. Impeller for solid wheel (see API610 6.4)
  6. It is more reasonable to adopt casing pressure designing(see detail in API 610 5.3.1)
  7. Sealing chamber with reasonable design(see API610 in figure 25 and table 6), the sealing gland and end of sealing chamber with excellent cooperation n(see API610 5.8.11)
  8. Cartridge seals are adopted. (see detail in API1682)
  9. Use the same pressure class flanges to connect inlet and outlet (see detail in API 5.4.2.1)
  10. Designing of bearing house is adopted structure with both oil lubrication and grease lubrication. It has a hole to discharge grease when adopting grease lubrication bearing house  (see detail in API 65.11.4)
  11. Effusion box is installed in baseplate (see detail in API 610.6.3.1). Outline designing in line with API610 appendix D.
  12. Axially split face using composite is appropriate(see detail in API 610 8.2.1.1)
  13. Wear rings and running clearance is appropriate (see detail in API610 5.7), wear ring should have surface hardening treatment(see API610 5.12.1.12)
  14. Outlet flanges could bear certain pressure(see detail in API610 9.6.9.2)
  15. Screw hole block with steel cap or steel plug(see API610 7.4.3.6)
  16. Bearing to be fixed on the shaft through the interference fitting with shaft shoulder, ring and tongue-shaped lock washer nut.( see:API610 5.10.1.3)
  17. There are two radial bearing and one double-acting axial (thrust) bearing on each shaft. The double-acting axial bearing could compound with or without the two radial bearing(see detail in API610 5.10.1)
  18. Bearing box adopts the framework oil seal type effectively keeping the oil in the bearing box, and to prevent debris entering the bearing box(see API610 5.10.2.7)
  19. Bearing lubricated by radiating type oil slinger (see API610 5.10.2.8). The water cooling the lubricating oil instead of cooling the bearing  outer ring(see API610 5.10.2.5)

 

  1. Adopting flexible coupling to connect pump and electrical motor (See detail in API 610 6.2.2).
  2. Coupling and shaft is guarded by coupling guard. It is made of non-tapping and non-spark aluminum plate to ensure enough stiffness so as to bear static point loading of 900N (200lb) without any contact with moving parts (See detail in API 610 6.2.14)​​​​​​
  3. Pressure pump casing connected by six angle bolt (See API610 5.1.31) all the major joint of the pump casing use the double end studs.( See detail in API 610 5.3.14)
  4. Tapping is adopted standard pipe size specification Rpl/2( See detail in API 610 5.4.1.1)
  5. Impeller for solid wheel (see API610 5.6.4).
  6. It is more reasonable to adopt casing pressure designing
  7. Sealing chamber with reasonable design ( See detail in API 610 in Figure 25 and table 6), the sealing gland and end of sealing chamber with excellent cooperation n(see API610 5.8.11)
  8. Cartridge seals are adopted.(see detail in API 1682)
  9. Use the same pressure class flanges to connect inlet and outlet(see detail in API 610 5.4.2.1)
  10. Designing of bearing house is adopted  structure with both oil lubrication and grease when adopting grease lubrication bearing house (see detail in API 610 5.11.4)
  11. Effusion box is installed in baseplate (see detail in API 610 6.3.1) Outline designing in line with API610 appendix D
  12. Axially split face using composite gasket seal (see API610 8.2.1.1).
  13. Wear rings and running clearance is appropriate (see API610 5.7):wear rings should have surface hardening treatment  (see API610 5.1.12).
  14. Outlet flange could bear certain pressure (see detail in API610 9.6.9.2).
  15. Screw hole block with steel cap or steel plug (see detail in API610 7.4.3.6).
  16. Bearing to be fixed on the shaft through the  interference fitting with shaft shoulder, ring and tongue-shaped lock washer nut. (see API610 5.10.1.3).
  17. There are two radial bearing and one double-acting axial bearing could compound with or without the two radial bearing (see API610 5.10.1).
  18. Bearing box adopts the framework oil seal type effectively keeping the oil in the bearing box, and to prevent debris entering the bearing box (see API610 5.10.2.7).
  19. Bearings lubricated by radiating type oil slinger (see API610 5.10.2.8). The water cooling the lubricating oil instead of cooling the bearing outer ring (see API610 5.10.28).

Hyraulic coverage

1. Inspection before starting
 

Be sure to check the followings:
 

(1) Insure pump plate fixed on foundation;

(2) Insure coupling and pump unit alignment;

(3) Insure piping connected by requirements;

(4) Insure motor installed by Installation and operation instruction;

(5) Insure the rotor of pump rotate easily (at least a circle);

(6) Insure the coupling guard installed;

(7) Insure the operator fully understand the safety specification that they should obey and the failures may be occurred;

(8) Insure the shaft seal liquid or cooling liquid lead-in by requirements;

(9) Insure the shaft seal installed by operation instruction;

(10) Insure the auxiliary device installed by operation instruction (If they exist);

(11) nsure the bearing have lubricated well, especially insure new pump grease or thin oil do not reduce or go bad;

(12) Insure the air trapped in pump escaped。

 

2. Shaft Seal
 

Open valves properly for stuffing box seal

 

3. Air exhaust
 

Pump and piping should fill of medium before starting, there are two methods: creation of vacuum or priming. If the pump operated on the suction state, exit gas by bolt hole on top of the pump casing.

Note: When creation of vacuum, evacuate air by bolt hole on top of the pump casing. When priming, open both side low pressure volute chamber of pump casing and the top plug, to get rid of pump vibration by remained air in pump.

 

4. Starting
 

(1) Close outlet valve;

(2) Open inlet valve completely;

(3) Open all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check all capacity and pressure;

(4) Starting pump after finishing above procedures;

(5) When the system starting deliver medium and the pressure reading at pressure gauge rise up, open outlet valve slowly。

Note: Forbid pump operating without liquid! Only close outlet valve when the pump start and shutdown, otherwise will damage the pump by overheating.

 

5. Operation

(1)

Confirm operating point

 

According to Q-H performance curve of pump, capacity Q varies with the actual operation head. The head depended on the system head (including the altitude difference between inlet and outlet, piping, valves, radiator and so on). So the pump actually operating point B depends on pump performance

curve Q-H and system performance curve Q-HA.

Once capacity settled, the shaft power, efficiency, NPSH settled as well. Pump has limited working range. The minimum capacity are shown as Qmin in Q-H performance curve. Maximum capacity are depended on the cross point of pump tolerance NPSH and system valid NPSHA. Adjust valve can change performance curve Q-HA of system, thereby adjust operation performance, makes pump operation stable and high efficiency.


(2) Operation management
 

Should pay attention to followings:
 

a. Pump should work stably

b. Forbid pump operating without liquid

c. To prevent medium temperature rise up, pump can not be run long period when close outlet valve

d. Generally, the bearing temperature not higher than 35℃ of ambient temperature, absolute

operation temperature less than 100℃.

e. Check oil level regularly if use thin oil. Deep groove ball bearing of grease lubrication no need routine maintenance.

f. Do not close inlet valve (if it is exist) when pump operating.

g. Periodical inspection and start jury pump.

h. Check auxiliary piping whether connected well.

i. Check elastic element of coupling, if worn replace immediately.

j. For stuffing box seal there should have a slight drip when running, push stuffing box gland gently until there is a slight drip (about 15-30 drop/min ).

For mechanical seal the seal leakage should reduce gradually. It is about 0-5drop/min after

starting few hours. If the seal leakage increase gradually and reach about 30-60drop/min, should check or adjust mechanical seal.

 

6. Shutdown
 

Close discharge valve.
 

Insure the pump unit stop smoothly when shutdown the motor. Pump should have a proper after-running period, cut heat source at this time, so that the delivered medium can cool down completely and avoid of producing any heat inside pump.

Close suction valve if pump stop work for a long period of time.

Close auxiliary piping, the shaft seal should use seal lubricant even though at stopped state. Evacuate all medium in pump and piping when freeze or stop work for a long-term, so as not to frost crack.

 

7. Storage
 

Every pump has inspected strictly before delivery. Recommend to adopt following procedures to store pump.
 

(1) Store new pump

If store pump at indoor, clean dry place and follow the storage requirements, the longest storage time is 12 months.

(2) If equipment is to be stored for long periods of time should follow below procedures.

a. Pump should keep in installation state and inspect work condition regularly. Start pump once every month or every three months (about 5 minutes). Check running condition before starting pump to insure there is enough liquid.

b. Dismantled pump from piping and check it according to section 5.1 to 5.4. Apply protective agent on inside pump casing especially the gap of the impeller, apply on suction and discharge, then cover the suction.

c. Operation after storage

Inspect and maintain completely before starting pump, especially shaft seal and bearing lubricant. Reinstall all safety protection devices according to requirement before starting.

Problem

Causes

Remedy

starting load too high

1. Starting without closing discharge valve;
2. packing too tight lead to lubricant water can not flow into;
3. Misguide by failing of overcurrent protector

1. Close the valve;
2. Loose packing or check the valve of water seal, check if packing ring against the nozzle of lubricant water,
3. Adjust current limiting threshold or repair overcurrent protector.

Packing overheating

1.Packing  too tight;
2.Cooling water can not flow into packing box;
3. Damage in the surface of shaft or shaft sleeve;

1. Loose packing properly;
2.Loose packing or check if the water seal pipe clogged;
3.Repair shaft or shaft sleeve;

Packing leakage excessive

1. Packing worn;
2. Packing too loose;
3. Shaft curved or vibration;
4. Wrong packing bind;
5. Unclean seal water wore shaft;
6. Shaft sleeve worn;
7. Wrong packing;
8.The pressure of seal chamber too high or too low;

1. Replace packing;
2. Tighten packing box gland or add more packing;
3.Align or replace shaft;
4. Rebind packing;
5.Filtrate or use exterior source as seal water, repair;
6.Replace shaft sleeve;
7.Replace packing;
8. Adjust the pressure and capacity of seal liquid or use a sealing liquid from an external source.

Mechanical seal leakage

1. The nominal pressure of mechanical seal lower than actual work pressure;
2.Unreasonable reduction of Mechanical seal mounting,friction components not contact effective;
3. The rust of shaft sleeve surface cause rotating seal ring of mechanical seal sealing failure;
4. The delivered medium physical and chemical property causes O-ring loss elasticity;
5. The delivered medium physical and chemical property causes spring mechanical seal of loss elasticity;
 6. Impurity enter friction components and damaged their surface;
7. The liquid of friction components volatilize that cause their surface burning-out;

1. Change the type of mechanical seal;
2. Reinstall;
3. Clean shaft sleeve or change their material;
4. Change material;
5. Replace or change material;
6. Filtrate or use exterior source as rinsing water;
7. Adjust rinsing medium or measure;

Bearings over heating

1.Improper centering;
2.Improper adjustment or resonance in piping;
3.Overlarge .axial force;
4.Unbalance rotor ;
5. The rigidity of foundation not enough;
6. Incorrect bearing installation or improper clearance;
7. Wore or loosened shaft;
8. Improper lubrication;
9. Oil splash ring can not get oil;
10. Poor circulation in pressure lube;

1. Readjust;
2.Readjust;reduce piping if necessary; use vibration-absorptive material;check and repair;
3. Check and adjust special working point;check capacity and running state;
4. Rebalance;
5.Strengthen the rigidity of foundation;
6. Check and choose bearing with properclearance;
7. Check and replace bearing;
8. Check the amount of oil first, too much or so little will affect operation, then check the quality of oil, especially applicable temperature;
9.Check and eliminate, the causes of can not get oil may related with oil quality, speed,wore of oil splash ring and oil circulation;
10. Check the system of pressure lube;

Vibration and noisy

1. Special working point B is not design point;not design point; low or high will cause vibration and noisy;
2. Insecure foundation;
3.Loosened anchor bolt;
4.Insecure piping supports;
5.Piping resonance;
6.Cavitations;
7. Air cell in medium or piping leakage;
8.clogged inlet or outlet of impeller;
9. Improper centering;
10. Unbalanced pump rotor or motor rotor;
11.Worn coupling pin or unhealthy coupling connection;
12. Worn bearing;
13. Shaft curved;
14. Friction in rotating elements;
15.Loosened or broken rotating elements;

1. Adjust system special working point or pump design parameters;
2. Strengthen foundation;
3. Tighten anchor bolt;
4. Strengthen piping supports;
5. Expanding the distance between pump discharge and elbow, use vibration-absorptive material in piping connection, adjust piping arrangements;
6. Rise water level, reduce suction line loss, increase suction pressure by using inlet throttle valve;improve pump cavitations performance;
7. Check and eliminate, add discharge valve;
8. Clean impeller, clean impurity of pump and piping, check strainer and suction nozzle;
9. Recentering;
10.Rebalance;
11. Replace pin, rotate coupling 180°, eliminate error of pin  hole, adjust the unit to insure there is a necessary clearance in coupling;
12. Repair or replace bearing;
13. Align or replace shaft;
14. Eliminate friction;
15. Eliminate, replace worn parts;

water attack

Air in pump or piping

Evacuate air and eliminate the causes

Pump starts pumping then stops

1. Clogged in suction line or impeller;
2.  Air  cell in piping;
3. Lift too high  valid NPSH too low;
4. Air enter shaft seal;
5. Water level decrease too much;

1. Clean impeller, clean impurity of strainer and suction piping;
2. Improve suction line, adjust piping arrangements, add discharge valve;
3. Increase entrance pressure, increase suction pressure by using inlet throttle valve; low the height of pump installation; change suction line if too much line loss;
4. Check pressure and amount of seal liquid if they are suitable operating requirements, replace packing or other shaft seal, check the mounting position of water seal ring;
5. Rise the lowest water level, increase entrance pressure, increase   suction   pressure by using   inlet   throttle   valve;

 

Download

Previous page
1
这是描述信息
这是描述信息
这是描述信息

Add: Jiuhua Industiral Park,Xiangtan City,Hunan Province,China

这是描述信息

Call us:+86-0731-55599916
            +86-18673110460

 

Hunan M&W Pump Co., Ltd   湘ICP备14003804号-2     www.300.cn      Manager

搜索
Search