Passive containment heat export system with flow guide structure

A passive containment and heat export technology, which is applied in the field of passive safety systems of nuclear reactors, can solve the problems of affecting the condensation heat transfer effect, not receiving enough attention, reducing the heat transfer efficiency of the heat exchanger, etc., to improve the gas flow condition , ensuring safety, reducing the effect of weakening

Active Publication Date: 2021-07-20
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of non-condensable gas will significantly affect the effect of condensation heat transfer and reduce the heat transfer efficiency of the heat exchanger
In existing inventions, the addition of flow guide structures to improve the gas flow conditions near the PCS internal heat exchanger and the distribution of non-condensable gases has not received enough attention, such as the patent application number CN201610801851.5 "A new type of passive Containment Energy C

Method used

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  • Passive containment heat export system with flow guide structure
  • Passive containment heat export system with flow guide structure
  • Passive containment heat export system with flow guide structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Such as figure 1 As shown, the non-energy safety shell heat export system of the present invention is disposed on both sides of the safety case 11, including the inside of the safety shell and the outer side portion of the safety shell; Located on the upper part of the inside of the safety case, the body includes an internal heat exchanger and a flow structure; the outer side portion of the safety case is located above the outer side of the safety case, including an external cooling water tank and a soda separator; the inside of the above safety shell Between the lines and valves are connected between the outer sides of the safety shell.

[0031] The flow structure of the inside side portion of the safety case is arranged in position parallel to the inner heat exchanger, which is a louver-type flow structure 10, and the blade is inclined by a rectangular stainless steel sheet (for example, 30 °, 45). Or 60 ° is sequentially arranged, welded on the fixed f...

Example Embodiment

[0036] Example 2

[0037] Such as figure 1 As shown, a non-energy safety shell heat source export system of the present invention is provided on both sides of the safety case 11, including the inside of the safety shell, the outer side portion of the safety shell, and the inner portion of the safety shell. , Pipeline of the outer side portion of the safety shell;

[0038] The outer portion of the safety shell includes a heat pipe 1, an outer cooling tank 2; wherein the outer cooling water tank 2 is disposed above the outer side of the safety case, and the heat pipe 1 is arranged in the external cooling water tank 2 to enhance the cooling of the external cooling tank 2. ;

[0039] The inner portion of the safety case includes a heat transfer tube 9, a heat exchanger upper casing 7, a heat exchanger lower uniform box 8, a fluid structure 10; wherein the upper end of the heat transfer tube 9 is connected to the bottom of the upper casing 7, the lower end Connected to the top of the l...

Example Embodiment

[0046] Example 3

[0047] Such as figure 1 As shown, a reactor of the non-energy safety shell heat export system with Example 1 or Example 2. The non-movable safety shell cooling system includes a safety case inner side portion and a safety shell outer portion. The inside portion of the safety case is located inside the safety case. The body includes an internal heat exchanger and a flow structure; the outer side portion of the safety case is located above the outer side of the safety case, and the main body structure includes an external cooling tank, a soda separator. The inside of the safety shell is connected between the line and the valve.

[0048] The outer portion of the safety case includes a heat pipe 1, an outer cooling water tank 2, an out-of-mouth isolation valve 3, a through member 4, a rising segment pipeline 5, and a down-segment pipeline 6; the outer cooling water tank 2 is disposed on the outer side of the safety shell, in the water tank The heat pipe 1 is arrange...

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Abstract

The invention relates to the field of nuclear reactor passive safety systems, in particular to a passive containment heat export system with a flow guide structure. The system is arranged on the inner side and the outer side of a containment and comprises a containment inner side part and a containment outer side part, the containment inner side part is positioned at the upper part of the inner side wall of the containment; the main body comprises an inner heat exchanger and a flow guide structure; the outer side part of the containment is positioned above the outer side wall of the containment, and the main body structure comprises an external cooling water tank and a steam-water separator; the containment inner side part and the containment outer side part are connected through a pipeline and a valve. According to the gas flow distribution characteristics in the containment vessel under the accident condition, the flow guide structure is arranged near the heat exchanger to effectively improve the gas flow condition near the heat exchanger in the PCS, the deterioration influence on condensation heat exchange caused by gathering of non-condensable gas near the internal heat exchanger is reduced, and the heat exchange efficiency of the PCS is improved.

Description

technical field [0001] The invention relates to the field of nuclear reactor passive safety systems, in particular to a passive containment heat derivation system with a diversion structure. Background technique [0002] Since nuclear power generation was developed and utilized in the middle of the last century, it has continuously provided mankind with efficient and clean energy. However, due to the unique physical properties of nuclear materials and the huge impact of nuclear accidents in history on society and the environment, the safety of nuclear power has received great attention. Combined with nuclear power operation experience and technological development, the concept of passive safety systems has been introduced into the design process of many third-generation nuclear power plants. The passive safety system can use natural phenomena such as density difference and gravity difference to ensure the safety of the reactor without external power support. my country's th...

Claims

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Application Information

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IPC IPC(8): G21C15/12G21C15/14G21C15/18
CPCG21C15/12G21C15/14G21C15/18Y02E30/30
Inventor 邢继李伟于勇吴宇翔马佳鹏谌登华高力刘倩雯王诚诚
Owner CHINA NUCLEAR POWER ENG CO LTD
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