Monitoring device for detecting leak hydrogen in internal cooling water and evaluating influence on quality of internal cooling water
A monitoring device, cold water technology, applied in electrical program control, comprehensive factory control, etc., can solve problems such as blockage, generator wire rod corrosion, etc., to improve safety, avoid equipment loss, and eliminate potential safety hazards.
Active Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0014] Aiming at the problems existing in the prior art, the present invention provides a monitoring device for detecting the leakage of hydrogen gas into the inner cooling water and evaluating the influence on the water quality of the inner cooling water. Bar corrosion, clogging, etc.
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Embodiment Construction
[0037] The invention is a monitoring device for detecting hydrogen leakage into the internal cooling water and evaluating the influence on the water quality of the internal cooling water, and is applied to generator auxiliary equipment of thermal power plants.
[0038] The present invention is implemented according to the following technical scheme:
[0039] The present invention comprises: a PLC programmable controller 10, a host computer and an alarm device 11, a manual shut-off gate 4 of the inlet sampling tube, a manual shut-off gate 5 of the outlet sampling tube, a manual shut-off gate 6 of the sampling tube of the breathing port of the water tank, and an outlet sampling tube. It is composed of online conductivity and pH meter 7, inlet online conductivity and pH meter 8, and online hydrogen leak detector 9 at the breathing port of the water tank.
[0040] The outlet online conductivity and pH meter 7 is connected to the manual cut-off door 4 of the inlet sampling pipe, an...
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The invention relates to an auxiliary equipment system of a power generator of a thermal power plant, belongs to the field of electromechanical integration, and particularly relates to a monitoring device for detecting leak hydrogen in internal cooling water and evaluating the influence on the quality of the internal cooling water. The monitoring device comprises a power generator, an internal cooling water tank and an internal cooling water pump, and is characterized in that outlet online conductivity and pH (potential of hydrogen) meters are connected with a manual stop valve of an inlet sampling tube, and the manual stop valve of the inlet sampling tube is further connected onto an internal cooling water outlet tube of the power generator; inlet online conductivity and pH meters are connected with a manual stop valve of an outlet sampling tube, and the manual stop valve of the outlet sampling tube is further connected onto an internal cooling water inlet tube of the power generator; a water tank vent online hydrogen leak detector is connected with a manual stop valve of a water tank vent sampling tube, and the manual stop valve of the water tank vent sampling tube is further connected to a vent of the internal cooling water tank. The monitoring device has the advantages that the condition of the quality of the internal cooling water can be continuously detected and can be evaluated and monitored, and the monitoring device guarantees that the influence of the leak hydrogen on the quality of the internal cooling water can be timely and accurately discovered and evaluated and the power generator can run safely.
Description
technical field [0001] The invention relates to a generator auxiliary equipment system of a thermal power plant, belongs to the field of mechatronics, and in particular relates to a monitoring device for detecting hydrogen leakage into internal cooling water and evaluating the influence on the quality of the internal cooling water. Background technique [0002] The quality of the cooling water in the generator is very important to the safe operation of the unit. During the start-up process of the generator, the replacement of carbon dioxide with hydrogen is not complete, and the air often leaks in through the sealing oil system during operation, which will pollute the hydrogen. Since the pressure of hydrogen is higher than that of the internal cooling water of the generator, hydrogen often leaks into the internal cooling water through the joints or joints of the PTFE water connecting pipe or the welded joints of the corrugated compensator bellows of the water inlet pipe and ...
Claims
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IPC IPC(8): G05B19/418
Inventor 武哲
Owner STATE GRID CORP OF CHINA