One, Coal powder sampler application
The Coal Powder Sampler is a customized, professional automated sampling equipment designed for the coal powder sampling issue in the direct blowing pulverizing system of thermal power plants. It is a sampler powered by compressed air that can operate continuously without interruption. It is suitable for regular coal powder sampling on the primary air coal powder pipeline of the direct blowing pulverizing system, mainly relying on the equal circular ring area sampling method, ensuring the samples collected are representative.
Due to equipment wear and changes in coal type, the fineness of the coal can vary significantly, affecting the economic operation of the boiler. Therefore, regular sampling and testing of the coal powder fineness is used as a basis for adjusting the swing gate opening of the cyclone separator and replacing worn-out equipment components in a timely manner.
The product employs automatic blowing with compressed air and automatic suction sampling with a vacuum pump, preventing blockage issues at the sampling port and ensuring easy sampling. The sampling speed is controlled by adjusting the compressed air pressure, resulting in more accurate coal powder fineness values. The sampling tube moves forward or backward at a constant speed to achieve comprehensive sampling over the entire annular area within the pipeline.
Section 2: Technical Parameters of Coal Powder Sampling Device
20mm Flat Tip Sampling Gun
Sample hole: 6mm-8mm
Sampling Time: Multiple Sampling Modes
Power Requirements: AC 220V
Gas Source Requirement: 0.3-1.0 MPA
Section 3: Structure of Coal Powder Sampling Device
The Coal Powder Sampler is primarily composed of the sampling system, separation system, programming system, display unit, control system, timing system, execution system, and installation accessories.
Four: Coal Powder Sampling Device Product Features
1. Timed Sampling; This equipment is equipped with a microcomputer timer switch, which automatically samples within the set time frame and shuts off power after sampling, significantly saving energy. Operators only need to retrieve the sample in front of the sampler after the set sampling time has elapsed. For instance, if an operator sets the sampling time to 9 AM and it takes 10 minutes (adjustable) to sample, the operator would simply collect the sample at 9:10 AM. No further action is required, greatly reducing the operator's workload and enhancing sampling efficiency. The timer switch can be set for 16 timed samplings a day, meaning 16 automatic sampling events can be scheduled.
2. Spot Sampling; the sampler is equipped with a programming system, allowing for any sampling length to be set. For instance, when the sampling length is set to 600mm, the sampler will uniformly collect samples to a distance of 600mm from the pipe wall, automatically retracting into the protective tube and placing itself outside the coal dust air stream, minimizing wear and extending lifespan.
3. Automatic blow cleaning; to prevent the sampling tube from clogging, the equipment must undergo an automatic blow cleaning after each automatic sampling, with adjustable cleaning time.
Section 5: Characteristics of Coal Powder Sampler
The sampling speed of the coal powder sampler is controlled by adjusting the pressure of compressed air. This ensures a more accurate, representative, and uniform coal powder fineness value.
2. Unique leak-proof interface, no leakage or powder spillage issues.
3. Made of stainless steel, non-clogging, and corrosion-resistant.
4. The sampling gun can be retracted into the protective tube, placed outside the coal powder air flow, with minimal wear and a long service life.
1 person operation, 2 minutes sampling, anytime, quick, and easy work.
Six: Coal Powder Sampler Installation Steps
This equipment features a unique design concept, effectively integrating the exhaust pipe with the sampling tube. Installation requires only welding a single connecting pipe.
Compressed air must be provided on-site.
2. Installation Location: Installed on the vertical section of the coal powder pipeline.
3. Holes: Drill two 50mm diameter mounting holes on the coal powder pipe.
4. Determine the length of the fixed pipe and the travel distance of the sampling gun based on the coal powder pipeline diameter.
5. Weld the fixed pipe securely to ensure smooth entry and exit for the sampling gun.