Device and method for measuring continuous pollution discharge flow rate of power plant boiler steam dome
A technology for boiler steam drums and measuring devices, which is applied to pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., and can solve problems such as difficult measurement
Active Publication Date: 2013-09-11
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +1
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Problems solved by technology
This is mainly due to the fact that the internal flow state of the continuous blowdown pipe of the steam drum is a two-phase flow state after volume expansion, and the measurement is difficult
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[0055] see figure 1 and figure 2 , the present invention is made up of test unit, data acquisition unit and calculation display unit;
[0056]In this embodiment, the continuous blowdown pipeline of the boiler steam drum is directly connected with the continuous row expansion vessel and the fixed row expansion vessel. In normal operation, the continuous blowdown of the boiler steam drum is firstly expanded through continuous row expansion vessels, and the expanded drainage is then expanded through fixed row expansion vessels, and finally the drainage is discharged to the ditch;
[0057] The test unit consists of a first pressure sensor arranged on the boiler drum , the second pressure sensor set on the row expansion vessel , the third pressure sensor set on the fixed row expansion vessel And the flow sensor set on the drainage pipe of the fixed row expansion vessel constitute;
[0058] The output ends of the first to third pressure sensors and the flow sensor are res...
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The invention discloses a device and a method for measuring the continuous pollution discharge flow rate of a power plant boiler steam dome. The device consists of a test unit, a data collecting unit and a calculation display unit, wherein the test unit consists of a first pressure sensor, a second pressure sensor, a third pressure sensor and a flow rate sensor, the first pressure sensor is arranged at the boiler steam dome, the second pressure sensor is arranged on a continuous discharge flash tank, the third pressure sensor is arranged on a fixed discharge flash tank, the flow rate sensor is arranged on a water discharge pipeline of the fixed discharge flash tank, the output ends of the first pressure sensor, the second pressure sensor, the third pressure sensor and the flow rate sensorare connected with corresponding input ends of the data collecting unit, and the output end of the data collecting unit is connected with the corresponding input end of the circulation display unit. In the method, a new calculation formula is deduced for calculation in accordance with the prior art. When the device and the method are adopted, the measurement problem of the continuous pollution discharge flow rate of the power plant boiler steam dome in the normal operation is solved, quantitative data are provided for the operation and the overhauling of a power plant, and basis is provided for energy saving and consumption reduction of the power plant.
Description
technical field [0001] The invention relates to a device and method for measuring the continuous blowdown flow rate of a steam drum of a power plant boiler based on a heat balance method. Background technique [0002] The continuous blowdown pipeline of the boiler drum in the power plant is generally directly connected with the continuous expansion vessel and the fixed expansion vessel of the boiler in the power plant. In normal operation, the continuous blowdown of the boiler drum is firstly expanded through continuous row expansion vessels, and then the expanded drainage is expanded through fixed row expansion vessels, and finally the drainage is discharged to the ditch. [0003] With the development of power units with large capacity and high parameters, the continuous blowdown of the boiler drum in the power plant has an increasing impact on the economics of the power plant. Taking a subcritical 300MW unit as an example, if the blowdown of the boiler drum increases by 1...
Claims
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IPC IPC(8): F17D3/18
Inventor 杨海生常澍平
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD