LSPE (LANZHOU LS) Mud Pump Parts Classification

1

Diaphragm

107.130.01.00-1

High-strength nitrile rubber (NBR) with reinforced fabric layer

1. Fatigue cracking due to long-term high-frequency reciprocating motion under high pressure; 2. Chemical corrosion by acidic/alkaline drilling fluid components

1. Regularly check diaphragm surface for cracks, replace every 800-1000 operating hours (complying with GB/T 5574-2019 standard); 2. Control drilling fluid pH value between 7-9, add corrosion inhibitors if necessary

2

Diaphragm Stabilizer

107.130.02

42CrMo alloy steel with hard chrome plating

1. Abrasion caused by friction with the diaphragm during reciprocating motion; 2. Deformation due to uneven pressure distribution

1. Ensure proper assembly clearance (0.1-0.2mm) between stabilizer and diaphragm; 2. Check pressure distribution in the pump chamber monthly, adjust if uneven

3

O Ring

D4-4-66

Fluororubber (FKM) resistant to high temperature and corrosion

1. Aging and hardening due to long-term exposure to high-temperature mud (above 80℃); 2. Cutting damage caused by sharp edges of matching parts during assembly

1. Store O rings in a cool, dry environment (temperature 0-25℃) to avoid aging; 2. Deburr matching parts before assembly, use assembly tools to avoid direct manual pulling

4

Ring

7602-0661-11, 7602-0660-03

Stainless steel 304 (7602-0661-11); carbon steel with zinc plating (7602-0660-03)

1. Corrosion caused by drilling fluid immersion; 2. Deformation due to excessive assembly torque

1. Clean the ring surface and apply anti-corrosion grease before assembly; 2. Use torque wrench to control assembly torque within the range specified by the manual (15-20 N·m)

1

Casing

107.233.01

High-strength cast iron (HT250) with anti-corrosion coating

1. Crack damage due to internal high-pressure impact from mud; 2. Corrosion and rust caused by long-term exposure to rainwater and drilling fluid splashing

1. Monitor pump internal pressure in real time, avoid overpressure operation (not exceeding 1.2 times the rated pressure); 2. Clean the casing surface regularly, touch up anti-corrosion coating every 6 months

2

Cover

107.132.04

Q235B carbon steel with powder coating

1. Deformation caused by external mechanical collision during transportation or on-site operation; 2. Seal failure due to aging of the gasket on the cover

1. Use protective packaging during transportation, avoid stacking heavy objects on the cover; 2. Replace the cover gasket every time the cover is disassembled, check the cover flatness before assembly

3

Pipe Cap

107.130.06

Stainless steel 316L

1. Thread wear caused by repeated disassembly and assembly; 2. Corrosion caused by residual drilling fluid inside the pipe

1. Use a suitable wrench during disassembly and assembly to avoid thread slipping; 2. Clean the internal thread with clean water after disassembly, and apply anti-seize agent before reinstallation

4

Lubricate Cap

LNB/AE1-1-06

Aluminum alloy with anti-rust treatment

1. Wear of the oil seal inside the cap due to long-term rotation; 2. Damage caused by improper use of lubricating oil filling tools

1. Replace the internal oil seal every 1200 operating hours; 2. Use a dedicated lubricating oil gun for filling, avoid using sharp tools to damage the cap

1

Screw

107.130.15

4.8-grade carbon steel with galvanized coating

1. Thread stripping caused by excessive assembly torque; 2. Corrosion and rust caused by humid on-site environment

1. Use a torque wrench to assemble according to the specified torque (8-12 N·m); 2. Apply anti-rust oil to the thread before assembly, check for rust regularly

2

Bolt

107.130.05

8.8-grade alloy steel (40Cr)

1. Fatigue fracture due to long-term high-frequency vibration of the pump; 2. Wear of the bolt head caused by improper wrench use

1. Use lock washers to enhance anti-loosening performance, check tightness every shift; 2. Use a wrench that matches the bolt head size, avoid slipping and damaging the bolt head

3

Washer

GB93-87, 107.130.07, 107.130.09-1, 107.130.10-1

Spring steel (GB93-87); carbon steel (others) with galvanized coating

1. Deformation and failure due to excessive pressure; 2. Corrosion caused by contact with drilling fluid

1. Select washers with matching specifications, do not use oversized or undersized washers; 2. Replace washers every time the fastener is disassembled, clean the contact surface before assembly

4

Nut

107.132.05, 107.04.110.44

8.8-grade alloy steel (40Cr) with galvanized coating

1. Thread wear caused by repeated disassembly and assembly; 2. Loosening due to vibration, leading to abnormal wear

1. Apply anti-loosening glue to the thread when assembling; 2. Regularly check the nut tightness with a torque wrench, re-tighten if loose

5

Stud

107.132.06, 107.130.03

8.8-grade alloy steel (42CrMo)

1. Thread damage caused by improper installation (tilted assembly); 2. Fatigue wear due to long-term alternating load

1. Use a stud positioning tool to ensure vertical assembly; 2. Conduct non-destructive testing every 1500 operating hours to check for fatigue cracks

6

Screw Plug

107.130.13

Stainless steel 304

1. Seal failure caused by thread wear; 2. Damage caused by over-tightening during assembly

1. Wrap PTFE tape around the thread before assembly to enhance sealing performance; 2. Control assembly torque within 10-15 N·m, avoid over-tightening

7

Lifting Screw

GB825-88

45# carbon steel with quenching and tempering treatment

1. Wear of the lifting thread caused by repeated lifting; 2. Bending deformation due to uneven stress during lifting

1. Ensure the lifting load does not exceed the rated load of the screw; 2. Use a balanced lifting tool to ensure uniform stress on the screw during lifting

1

T-Joint

107.130.08

Stainless steel 316L

1. Erosion wear at the joint caused by high-velocity mud flow; 2. Corrosion caused by chemical components in the mud

1. Regularly check the inner wall of the joint for wear, replace if the wear depth exceeds 2mm; 2. Filter the mud to reduce solid particle content, control below 5%

2

Flange

107.130.16, 107.223.01, 107.223.02, 107.223.03

Carbon steel (Q235B) with anti-corrosion coating (107.130.16); stainless steel 304 (others)

1. Seal groove wear caused by repeated disassembly and assembly; 2. Bolt hole deformation due to excessive assembly torque

1. Replace the flange gasket every time it is disassembled, check the seal groove for damage; 2. Uniformly tighten the flange bolts in a diagonal order, control the torque uniformly

3

Elbow

LS1292Z.01.08

High-chromium alloy steel (HC276) with wear-resistant lining

1. Severe erosion at the elbow bend caused by high-velocity mud flow; 2. Damage caused by pipeline vibration

1. Install a buffer device at the elbow to reduce mud flow velocity; 2. Fix the elbow with a bracket to reduce vibration during pump operation

4

Plug

101-0401-03-21-008

Stainless steel 304

1. Seal failure caused by thread wear; 2. Corrosion caused by residual mud

1. Clean the thread and seal surface before assembly, apply anti-seize agent; 2. Remove the plug and clean the pipeline regularly to avoid residual mud corrosion

5

Cut-off Valve

107.130.03.00

Cast steel (WCB) with stainless steel valve core

1. Valve core wear caused by mud solid particle scouring; 2. Valve seat leakage caused by improper closing

1. Regularly open and close the valve to remove attached solid particles, check for leakage; 2. Avoid forced closing of the valve when there is high-pressure mud flow

6

Pressure Gauge

Y-100型 M20*1.5, YK-100

Brass case; stainless steel 316L pressure element

1. Damage to the pressure element caused by sudden pressure impact; 2. Dial fogging caused by humid environment

1. Install a pressure buffer tube at the gauge inlet to reduce pressure impact; 2. Regularly calibrate the pressure gauge (every 6 months) according to GB/T 1226-2010 standard, keep the gauge dry

7

Strainer Assy, Discharge

107.223.20.00

Stainless steel 316L filter screen; carbon steel shell

1. Filter screen blockage caused by excessive mud solid particles; 2. Shell corrosion caused by mud immersion

1. Clean the filter screen every 200 operating hours, replace if damaged; 2. Check the shell for corrosion regularly, apply anti-corrosion coating if necessary

8

Studded Assy, Manf

107.223.10.00

Alloy steel stud (42CrMo); stainless steel nut

1. Stud fatigue wear caused by long-term vibration; 2. Nut thread wear caused by repeated disassembly

1. Use anti-loosening nuts and check tightness every shift; 2. Replace the stud and nut as a set if thread wear is found

1

Crane

107.232.10.00

Q690 high-strength steel

1. Fatigue wear of the crane arm caused by repeated hoisting; 2. Corrosion caused by outdoor exposure

1. Do not exceed the rated hoisting load, conduct load testing every year; 2. Paint the crane surface annually, store in a covered area when not in use

2

Crane Support

107.232.20.00

42CrMo alloy steel

1. Deformation caused by uneven stress during hoisting; 2. Welding seam cracking caused by vibration

1. Ensure the support is firmly fixed before hoisting, check the stress point; 2. Inspect the welding seam regularly with non-destructive testing, repair if cracks are found

3

Block Pulley

107.232.30.00

40CrNiMoA sheave; 42CrMo axle

1. Sheave groove wear caused by steel wire rope friction; 2. Bearing wear due to insufficient lubrication

1. Use steel wire rope of matching specifications, check sheave groove wear monthly; 2. Replenish lubricating grease every 300 operating hours, check bearing rotation flexibility

4

Chain Block

-

Alloy steel chain; cast steel hook

1. Chain link wear caused by repeated tension; 2. Hook deformation caused by overloading

1. Strictly follow the rated load, do not overload; 2. Regularly check the chain link for wear and deformation, lubricate the chain every month

5

Shackle

-

20CrMnTi alloy steel with quenching treatment

1. Pin shaft wear caused by rotation during hoisting; 2. Deformation caused by lateral force during hoisting

1. Ensure the shackle is loaded vertically, avoid lateral force; 2. Check the pin shaft tightness and wear regularly, replace if worn