Leakage detection method and device for # 4 low-pressure heater of coal-fired power generation unit
A technology for low-pressure heaters and generator sets, which is applied in the direction of measuring the rate of increase and deceleration of fluids, liquid tightness measurement using liquid/vacuum degree, etc., which can solve the adverse effects of unit safety, economic operation, leakage intelligent early warning system, lack of Problems such as low-pressure heaters, to achieve the effect of improving the accuracy of early warning, avoiding safety accidents, and avoiding the interference of accidental factors
Pending Publication Date: 2021-08-06
ZHONGDIAN HUACHUANG ELECTRIC POWER TECH RES +1
View PDF12 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] At present, the leakage of the #4 low-pressure heater is mainly judged by humans. By observing relevant data such as heater operating end difference and heater temperature rise, and relying on rich operating experience to make judgments, the ability and experience of operating personnel are highly required. When the personnel found that the relevant parameters of the #4 low pressure heater were abnormal, obvious leakage had already occurred, which had adverse effects on the safety and economic operation of the unit, and lacked an intelligent early warning system for the leakage of the #4 low pressure heater
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
[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
[0039] This embodiment discloses a method and device for detecting the leakage of the #4 low-pressure heater of a coal-fired generating set, which can detect the leakage of the #4 low-pressure heater in a timely and accurate manner. see figure 1 , related systems include #1 low pressure heater 1, #2 low pressure heater 2, #3 low pressure heater 3, #4 low pressure heater 4, steam turbine low pressure cylinder 5, condenser 6, condensate pump 7, #1 low pressure heating Steam inlet pipe 11, #2 low pressure heater inlet pipe 12, #3 low pressure heater inlet pipe 13, #4 low pressure heater...
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 relates to a leakage detection method and a leakage detection device for a # 4 low-pressure heater of a coal-fired power generation unit. A # 4 low-pressure heater outlet water temperature measuring point, a # 4 low-pressure heater inlet flowmeter and an atmospheric pressure measuring point are additionally arranged, a perfect measuring device for leakage related parameters is established by combining a # 4 low-pressure heater steam inlet pressure measuring point, a # 4 low-pressure heater steam inlet temperature measuring point, a # 4 low-pressure heater drainage temperature measuring point, a # 4 low-pressure heater normal drainage control valve opening degree, a # 4 low-pressure heater water inlet temperature measuring point, a # 4 low-pressure heater water level gauge, a # 4 low-pressure heater outlet flow meter and the like, and a boundary condition for triggering leakage early warning of the # 4 low-pressure heater is provided. Compared with the prior art, the water side leakage and the steam side leakage of the # 4 low-pressure heater can be early warned, the leakage of the low-pressure heater can be timely and accurately judged, and the leakage is prevented from being further expanded.
Description
technical field [0001] The invention relates to the field of coal-fired power generation, in particular to a method and device for detecting leakage of a #4 low-pressure heater of a coal-fired generating set. Background technique [0002] Under the new situation of the electric power industry, the low-load operation time of coal-fired generating units has increased, and frequent start and stop have adversely affected the safety of unit operation. At the same time, the requirements for the operation safety of coal-fired power generation units are constantly increasing, and it is an urgent need to use new technologies to improve the safety level of units. [0003] As a heat conversion device, the low-pressure heater is widely used in the steam extraction and heat recovery system of large thermal power units. Its working principle is: extract high-temperature and high-pressure steam from the steam turbine, heat the condensate in the low-pressure heater, and improve heat exchang...
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 IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 崔传涛管忠岳志刚马守祥秦攀陈啸刘岩曾胜龙
Owner ZHONGDIAN HUACHUANG ELECTRIC POWER TECH RES