Ten types of special names and explanations coal industry
1. Underground underground electrical operation
Refers to the operation of installation, commissioning, inspection, maintenance and fault handling of underground mechanical and electrical equipment in coal mines to ensure the safe operation of the mechanical and electrical equipment of this class. It is suitable for symbiosis with coal, associated pit exploration, mine construction, and underground electric clamps during mining.
2. Coal mine underground blasting operations
Refers to the operation of blasting under the coal mine
3. Coal mine safety monitoring and monitoring operations
Refers to the operation of installation, commissioning, inspection and maintenance of coal mine safety monitoring and monitoring system to ensure its safe operation. It is suitable for safety monitoring and monitoring operations during coal symbiosis, associated pit exploration, mine construction and mining.
4. Coal mine gas inspection work
Refers to the work of conducting underground gas inspections in coal mines, inspecting the integrity and ventilation of gas facilities in the jurisdiction, checking the gas conditions, filling in various records according to regulations, and timely processing or reporting the problems found. It is suitable for underground coal gas inspection in coal mine construction and mining process with coal symbiosis.
5. Coal mine safety inspection operations
Refers to the safety supervision and inspection of coal mines, inspection of the safety facilities and safety production conditions of production and production sites, inspection and supervision of the handling of hidden accidents.
6, coal mine hoist operation
Refers to the operation of the lifting equipment of the coal mine to transport personnel, ore, vermiculite and materials, and is responsible for the inspection and operation records. Applicable to the operation of coal mine hoists, including vertical shafts, dark vertical shaft hoists, inclined shafts, dark inclined shaft hoists and hoisting operations for open-pit mine slope hoisting.
7. Coal mining machine (roadheading machine)
The operation operation refers to the operation of the coal mining machine and the roadheader in the coal mining face and the heading face, engaged in coal mining, coal loading and excavation work, and is responsible for the inspection and operation records of the coal mining machine and the roadheader to ensure the coal mining machine and the roadheader. Safe running jobs. It is suitable for coal mining machine and roadheader operation in coal mining and excavation process.
8. Coal mine gas drainage operation
Refers to the operation of coal mine gas drainage drilling, sealing, gas flow measurement and gas extraction equipment operation to ensure the safe operation of gas drainage. It is applicable to coal mine ground and underground gas drainage operations in coal mines, coal symbiosis and associated mine construction and mining.
9, coal mine prevention operations
Refers to the forecasting and forecasting of coal and gas outburst, the collection and analysis of relevant parameters, the implementation and inspection of outstanding prevention measures, and the prevention of outburst effects, etc., to ensure the safe operation of the anti-burst work. It is suitable for underground coal and gas explosion prevention operations in coal mines, coal symbiosis and associated mine construction and mining.
10. Coal mine water exploration and drainage operations
Refers to the forecasting and forecasting of coal mine exploration and release water, the collection and analysis of relevant parameters, the implementation and inspection of water and flood detection measures, and the effect inspection to ensure the safe operation of the water. It is suitable for underground coal mine water exploration and drainage operations in coal mines, coal symbiosis and associated mine construction and mining.
Introduction to special operation permit
The special operation operation certificate shall be uniformly produced by the State Administration of Work Safety, and the provincial safety production supervision and administration departments and coal mine safety supervision agencies shall be responsible for the issuance. The special operation operation certificate is common throughout the country. Special operation operation certificates shall not be forged, altered, loaned or transferred.
Special operations personnel must accept special safety technology training, safety technology theory assessment and practical operation skills assessment, and obtain special operation operation certificate before they can work on the job; no training, or training assessment Those who are qualified shall not be allowed to work.
The training and assessment of special operators shall implement the separation system of teaching and testing. The State Administration of Safety Supervision shall be responsible for organizing the formulation of training programs and assessment standards for special operators and recommending the use of teaching materials. The training institutions organize training according to the training outlines and recommended materials developed by the national bureau. All provincial-level safety production supervision and management departments, coal mine safety supervision agencies or their entrusted qualified units shall organize assessments according to the assessment standards set by the national bureaus.
The special operation operation certificate shall be reviewed by the original examination and certification department every 3 years, and the validity period is 6 years. The special operation personnel of the cross-regional or cross-regional mobile construction units may apply for review to the assessment and certification units at the place of employment or construction.
â‘ Hardness:
Due to the scientific synthesis of high-molecular polyurethane elastomer materials using iron rubber, the higher the hardness, the higher the modulus, the smaller the elongation, and the better the wear resistance and heat resistance. Well, in the range of minus 35 degrees Celsius to 100 degrees Celsius, and at a pressure of 60 to 70 MPa, the maximum sealing performance can be guaranteed.
The use of viscoelastic seals made of nitrile rubber is the most complete protection against damage caused by back pressure. In the range of minus 55 degrees Celsius to 100 degrees Celsius, and under a pressure of 21MPa, due to the rubber The seal is often in a compressed state, so the compression performance of the rubber seal must be considered. It not only achieves enhanced anti-climbing performance and low friction resistance, but also has good performance in dealing with special low-temperature oil, and can also be used in combination with Anti-wear Ring double-purpose retaining ring BRL type.
Sealing products made of polytetrafluoroethylene and nitrile rubber/PTFErubber; or seals made of nylon resin and nitrile rubber, which can be used in a wide range of applications with large pressure changes and fast sliding speeds According to the working condition, the input hydraulic pressure cutout is designed on the end face of the polytetrafluoroethylene ring to prevent penetration leakage. The maximum working temperature environment is minus 40 degrees Celsius to 160 degrees Celsius; the maximum working pressure is 50MPa.
SPGW piston seal
Material:PTFE+rubber elastomer+reinforced modified nylon
Temperature:Nitrile rubber -40~100℃
Speed:=1.0m/s
Pressure:≤50mpa
SPGO piston seal
Material:PTFE+rubber elastomer
Temperature:Nitrile rubber -40~110℃
Speed:=1.0m/s
Pressure:≤35mpa
SRUV piston rod seal
Material:NBR+thermoplastic polyurethane
Temperature: -35`90℃
Speed:=0.5m/s
Pressure:≤40mpa
SRS piston rod seal
Material:PTFE+NBR
Temperature:-40~110℃
Speed:=1.0m/s
Pressure:≤40mpa
SRCB piston rod buffer seal
Material:Polyurethane+modified polyoxymethylene
Temperature: -35~110℃
Speed:=1.0m/s
Pressure:≤50mpa
SRU piston rod seal
Material:Polyurethane
Temperature:-35~100℃
Speed:=1.0m/s
Pressure:≤40mpa
SRD iron case dust prevention
Material:Polyurethane+metal skeleton material
Temperature:-40~110℃
Speed:=1.0m/s
SRDI soft dustproof
Material:polyurethane
Temperature:-40~110℃
Speed:=1.0m/
SDS Dumbbell Seal
Material:polyurethane
Temperature: -35~110℃
Speed:=0.5m/s
Pressure:≤50mpa
SPG piston combination seal
Temperature:
NBR+Polyurethane + Modified PolyoxymethyleneTemperature:-35`110℃
Speed:=0.3m/s
Pressure:≤70mpa
SRNL piston rod seal
Material
NBR+Polyurethane + Modified PolyoxymethyleneTemperature:-35`110℃
Speed:=0.3m/s
Pressure:≤70mpa
SRDF Piston Rod Seal
Material
Polyester rubberTemperature:-40`100℃
Speed:=1.0m/s
SDY Y-seal
Material:Polyurethane
Temperature:-35~110℃
Speed:=0.5m/s
Pressure:≤70mpa
KZT anti fouling ring
SDS Steffel
Piston main oil seal
oil seals,hydraulic oil seal,track link oil seal,TCV oil seal
Safe Seal Technology Co., Ltd. , https://www.jolseals.com