Atomic energy power plant system

A power plant and atomic energy technology, applied in the field of radioactive substances, can solve the problems of small capture capacity, poor performance, and impractical application

Inactive Publication Date: 2005-11-30
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, any device cannot avoid the shortcoming of short life, the increase in pressure difference due to the capture of corrosion products or the contamination of organic matter in the turbine system, the filter agent caused by the hydrochemical instability of high temperature water, or the following small hole shape Poor performance due to changes, the change in the shape of the pores is caused by the precipitation of the filter material or the volume expansion caused by corrosion and oxidation
In addition, the current situation is that there is also a problem that the capture capacity is small, and the purification performance decreases with the passage of time, so it cannot be put into practical use (refer to the document "Guidelines for Filters for Power Generation", page 8, Japan Po-ru Co., Ltd., 1997 issued)

Method used

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no. 1 Embodiment

[0024] In the system that has been built and operated, it is difficult to find the location of the device for separating and removing radioactive substances due to space problems or economical reasons. However, the transfer of radioactive substances to the steam system can be reduced by improving or replacing devices such as the gas-water separator 4 or the dryer 3 installed in the nuclear reactor pressure vessel 9, thereby improving its performance. In this way, when the droplets that have a greater impact on radioactive transfer collide with devices such as the dryer 3, the droplets are prevented from departing from the dryer or the attached radioactive substances are peeled off after drying, thereby reducing the transfer of radioactive substances to the steam system.

[0025] Refer below figure 2 , describe the following example, in this example, by coating the surface of the corrugated plate 22 of the dryer 3, TiO 2 , ZrO 2 , ferrite (ferrite) and other substances, the ...

no. 2 Embodiment

[0047] Next, the second embodiment will be described. The second embodiment relates to an improvement of a high-temperature water purifier having a filter usable at high temperature, that is, a high-temperature filter.

[0048] Figure 5 It is a schematic sectional view showing the structure of the high-temperature water purifier of the present invention. Figure 5 The high temperature water purifier shown is suitable for the purpose of purifying high temperature water in liquid state (not impossible for steam). Such as Figure 5 As shown, the high temperature water purifier 40 includes a plurality of hollow membrane tubes 30 as high temperature filters.

[0049] Such as Figure 4 As shown, the hollow membrane tube 30 has a double-layer structure, wherein the outer layer is a surface layer 31 with a smaller micropore gap that can capture tiny particles and is prone to pressure difference, and the inner layer is a base layer 32 that has the effect of maintaining the surface...

no. 3 Embodiment

[0079] Refer below Figure 7 , the third embodiment will be described. Figure 7 The high-temperature water purifier shown is suitable for purifying high-temperature water in a steam state. In addition, in Figure 7 shown in the high temperature water purifier, with Figure 5 The same components of the shown high-temperature water purifier, or components with similar functions, are denoted by the same symbols, so repeated descriptions are omitted.

[0080] Such as Figure 7 As shown, in the high temperature water purifier 40, a water outlet 42 is provided on one side of the top of the container 40A, and a backwash water injection port 48 is provided on the other side. At the bottom of the container 40A, a water supply port 41 is provided. In addition, a drain port 47 is provided at the bottom of the container 40A. In addition, through the water supply pipeline (for example, water supply pipe) 41A, the more seriously polluted water vapor is supplied to the water supply po...

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Abstract

The present invention disclosed an atomic power plant system and operational gaming, which comprises a atomic reactor; a steam turbine, using the steam generated in the atomic reactor pressure vessel; a separating removing device for separating and removing the radioactive substance, set in the pressure vessel or the steam passage between the pressure vessel and the steam turbine inlet. Adopting a drier, which is on the surface of tcorrugated plates with an inorganic ion-exchange material stable under a condition in which high-temperature water exist, such as TiO2, for suppressing the radioactive substance transferred from the pressure vessel of the atomic power plant to the steam system.

Description

technical field [0001] The invention relates to a method, equipment and device for reducing radioactive substances transferred to cooling water or separating and removing these substances in radioactive systems such as atomic energy and thermonuclear power plants. Background technique [0002] In nuclear power plants, it is very important to reduce nuclear radiation during operation and periodic inspection. So far, there have been reductions mainly containing Co -60 The concentration of radioactive substances in the reactor water, or the corresponding measures to reduce the radioactivity transferred to the nuclear reactor water system, and the corresponding measures for various materials, water quality control measures, and improvement measures for purifiers. However, until now, no countermeasures have been taken to reduce the radioactivity transferred to the main steam and turbine systems. [0003] Refer below figure 1 and figure 2 , to describe the radiation transfer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/16G21C15/18G21C19/307G21F9/02G21F9/06G21F9/12
CPCG21C19/307G21F9/02G21F9/12Y02E30/30
Inventor 逸见幸雄关秀司闰间裕小林实石桥文彦稻见一郎马场隆男
Owner KK TOSHIBA
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