A thermal power plant negative pressure side system leakage point accurate positioning method

A technology for precise positioning and thermal power plants, applied in image data processing, application of light to test fluid tightness, instruments, etc., can solve problems such as slow response speed, low detection rate, environmental pollution, etc., and achieve fast positioning speed and detection efficiency The effect of high and strong anti-interference ability

Active Publication Date: 2019-05-28
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

The pressure drop leak detection method has the disadvantages of slow reaction speed and low detection rate; the halogen detection method is simple to operate and low in cost, but a large amount of Freon is likely to cause great pollution to the environment

Method used

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  • A thermal power plant negative pressure side system leakage point accurate positioning method
  • A thermal power plant negative pressure side system leakage point accurate positioning method
  • A thermal power plant negative pressure side system leakage point accurate positioning method

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Embodiment Construction

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0052] Such as Figure 1 to Figure 4 As shown, the present invention provides a method for locating leaks in the negative pressure side system of a thermal power plant. The premise of the present invention is that there is a suspected leak in a certain part of the negative pressure side system of a thermal power plant. The specific location is to be determined. Using the method described in the present invention The specific location of the vacuum leak point can be automatically identified, and the technical solution is as follows:

[0053] A method for...

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Abstract

The invention discloses a thermal power plant negative pressure side system leakage point accurate positioning method. The method is characterized by comprising the following steps of firstly, adopting an infrared image acquisition device to carry out infrared image shooting on a suspected leakage point position of a negative pressure side system of a thermal power plant; reading an infrared imaging video of the detected equipment through an upper computer processing system, carrying out graying processing, denoising processing and image enhancement processing on the extracted sample image, carrying out a moving template method to identify the image space position of the vacuum leakage point part in the image, and finally accurately determining the leakage point position of the vacuum pipeline. Compared with an existing method, the method has the advantages of being high in positioning speed, high in detection efficiency, high in anti-jamming capability, free of pollution to the environment, free of a large number of external devices, convenient to carry on site, obvious in defining of a leakage area, short in detection time and low in detection cost.

Description

technical field [0001] The invention belongs to the technical field of thermal power plant negative pressure side system detection, and in particular relates to a method for precisely locating leakage points of the thermal power plant negative pressure side system. Background technique [0002] The negative pressure side system of a thermal power plant is a large and relatively complex system. Its related equipment is mainly composed of a vacuum system and a sealed steam system, mainly including the condenser operating under negative pressure and the condensate pump associated with it. , circulating water pump, vacuum pump and other equipment are used to establish the vacuum state of the condenser of the steam turbine unit, so that the steam can convert heat energy into mechanical energy to the maximum extent. [0003] The tightness of the negative pressure side system of a thermal power plant is one of the main factors affecting the vacuum degree of the steam turbine, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/70G06T7/90G01M3/38
CPCY04S10/50
Inventor 杨本臣郭铭王春艳
Owner LIAONING TECHNICAL UNIVERSITY
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