Automatic water input cooling method and system for internal temperature control of lining concrete
An automatic system, water cooling technology, applied in the direction of temperature control, control/regulation system, temperature control using electric mode, etc., can solve the problem of inability to effectively realize the temperature control and anti-cracking of lining concrete, poor concrete temperature control guarantee, theoretical methods Insufficient support and other problems, to reduce the risk of temperature cracks, ensure the quality of water cooling, simple and practical installation and operation
Active Publication Date: 2019-11-05
WUCHANG UNIV OF TECH +2
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Problems solved by technology
[0006] Based on the above situation, the currently adopted method of controlling the internal temperature of lining structure concrete through water cooling is poor in science, outdated in technology, insufficient in support of theoretical methods, poor in guaranteeing concrete temperature control, and uneconomical, and cannot effectively achieve the goal of temperature control and anti-cracking of lining concrete
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[0043] In conjunction with the accompanying drawings, as follows figure 2 Baihetan Hydropower Station 2 shown # Taking the lining concrete of unit 139 of the flood discharge tunnel as an example, the specific implementation scheme of the automatic method and system for controlling the internal temperature of the lining concrete involved in the present invention and the system will be described in detail.
[0044]
[0045] 1. Basic information of Baihetan Hydropower Station
[0046] The Baihetan Hydropower Station is located in Ningnan County, Sichuan Province, and Qiaojia County, Yunnan Province, on the lower reaches of the Jinsha River. It is a control project for the development and management of the Yangtze River. The installed capacity of the power station is 14,004MW, and the annual average power generation is 60.241 billion kW·h. It is the second largest hydropower station in the world (after the Three Gorges). The hub project is composed of main buildings such as b...
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The invention provides an automatic water input cooling method and system for internal temperature control of lining concrete, and aims at automatically controlling water input cooling for the internal temperature control of lining concrete. The method is characterized by comprising the steps that 1) water input cooling is carried out on the concrete according to a preset scheme, water input timeis recorded, a temperature sensor buried in the concrete collects the internal temperature of the concrete in real time, the ith collected internal temperature of the concrete is recorded as Ti, corresponding water input time is recorded as ti, and water input cooling start time t0=0; 2) a water input cooling measure is determined based on the collected internal temperature Ti of the concrete andthe corresponding water input time ti; and 3) is T<i-1>-Ti>=0.0052 DEG C for N continuous times, or ti>24*dj+26, it is shown that a water cooling process of the lining structure is completed, and theautomatic water input cooling system can be stopped.
Description
technical field [0001] The invention belongs to the technical field of temperature control and anti-cracking of lining concrete, and in particular relates to an automatic method and system for controlling the internal temperature of lining concrete and cooling through water. Background technique [0002] Lining is a structure widely used in civil engineering. Lining concrete will heat up due to the heat of hydration of cement and other cementitious materials, resulting in high internal temperature. For example, the highest temperature inside the lining concrete of the water delivery tunnel in the permanent ship lock of the Three Gorges Water Conservancy Project reaches nearly 60°C, and the lining concrete of the water delivery tunnel of Xiaolangdi Hydropower Station The highest internal temperature reached more than 70°C. The thickness of the lining structure is small, and most of them have high strength (for example, the strength of the spillway tunnel of a large hydropowe...
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IPC IPC(8): G05D23/19
CPCG05D23/1925G05D23/1931
Inventor 段亚辉樊启祥段次祎方朝阳王孝海李文涛
Owner WUCHANG UNIV OF TECH