Wind speed measurement system and method of pulverized-coal-included airflow of pulverized coal feeding pipe of coal-fired boiler
A measurement system, technology for coal-fired boilers, applied in directions such as measuring fluid velocity using differential pressure
Active Publication Date: 2016-04-20
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
View PDF6 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0009] The purpose of the present invention is to solve the technical problems existing in the prior art, and to provide a system and method for measuring the wind speed of the powder-containing airflow in the powder feeding pipeline of a coal-fired boiler
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0071] The present invention will be further described below in conjunction with specific examples.
[0072] Such as image 3 As shown, a coal-fired boiler pulverized gas flow air velocity measurement system includes a powder-containing air flow sampling device, a differential pressure measurement device 12, a speed measurement system and a controller 11, and the powder-containing air flow sampling device includes a sampling head, The air inlet of the sampling head is set towards the direction of the air flow, and the sampling head is provided with a first pressure measuring hole for measuring the static pressure in the powder feeding pipeline and a second pressure measuring hole for measuring the static pressure inside the sampling head;
[0073] The inlet of the differential pressure measurement device 12 communicates with the first pressure measurement hole and the second pressure measurement hole respectively through the first pressure transmission tube 18 and the second p...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a wind speed measurement system and method of a pulverized-coal-included airflow of a pulverized coal feeding pipe of a coal-fired boiler. The measurement system comprises a pulverized-coal-included airflow sampling device, a differential pressure measurement apparatus, a speed measurement system and a controller. The pulverized-coal-included airflow sampling device includes a sampling head; a first pressure measurement hole and a second pressure measurement hole are formed in the sampling head; and the inlet of the differential pressure measurement apparatus is communicated with the first pressure measurement hole and the second pressure measurement hole respectively. The speed measurement system includes a gas-solid separation device and a speed measurement device; the inlet of the gas-solid separation device is connected with the pulverized-coal-included airflow sampling device and the outlet of the gas-solid separation device is connected with an airflow inlet of the speed measurement device; an airflow outlet of the speed measurement device is connected with a negative-pressure exhausting apparatus; and the output terminal of the speed measurement device is connected with the controller. A bending-head type pulverized coal sampling gun can carry out full-cross-section sampling, thereby guaranteeing measurement accuracy; and with a back-flushing anti-blocking system, blocking of a pressure transmitting pipe and a pressure measuring hole can be effectively prevented.
Description
technical field [0001] The invention belongs to the field of thermal power generation, and in particular relates to a system and method for measuring the wind velocity of powder-containing air flow in a powder feeding pipeline of a coal-fired boiler. Background technique [0002] The primary wind speed of the coal-fired boiler powder feeding pipeline in a thermal power plant is one of the important parameters that need to be monitored. If the primary wind speed is too low, it will cause accidents such as powder accumulation or blockage in the powder feeding pipeline, and burnt out of the burner nozzle; Therefore, maintaining an appropriate primary wind speed is of great significance for the safe and economical operation of coal-fired boilers in thermal power units. [0003] In order to realize the monitoring of the primary wind speed, it is necessary to accurately measure the next wind speed in the thermal state. The measurement of wind speed in the hot state is different ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/14
CPCG01P5/14
Inventor 侯凡军刘科刘景龙王海超段传俊
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY