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A Flow Regulating System of a Passive Nuclear Fuel Irradiation Testing Device

A technology for flow regulation and nuclear fuel, applied in the field of reactor fuel irradiation, to shorten the preparation period, improve economy, and ensure safe operation.

Active Publication Date: 2021-05-04
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, any test is risky. During the design process of the flow regulating device, it should be fully considered that the flow regulating device can still ensure that the surface temperature of the irradiated fuel will not exceed the required value of the test under unexpected conditions.

Method used

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  • A Flow Regulating System of a Passive Nuclear Fuel Irradiation Testing Device
  • A Flow Regulating System of a Passive Nuclear Fuel Irradiation Testing Device
  • A Flow Regulating System of a Passive Nuclear Fuel Irradiation Testing Device

Examples

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Embodiment 1

[0036] like Figure 1-Figure 6 As shown, a flow regulating system of a passive nuclear fuel irradiation testing device includes a positioning flange 5, the lower end of the positioning flange 5 is connected with a support tube 6, and the support tube 6 is coaxially welded to the end of the positioning flange 5. In the positioning groove at the lower end, a support ring 11 is welded on the inner wall of the end of the support tube 6, and an inner sleeve A7 is welded on the inner side of the support tube 6 in the lower end of the positioning flange 5, and the inner sleeve A7 The end of the cylinder 8 is connected with a cylinder 8, and the side wall of the cylinder 8 is provided with a water hole, and four water holes are evenly arranged along the circumference of the side wall of the cylinder 8, and the water hole It is a square hole, the length of the square hole in the axial direction is less than the height of the slider 9, the end of the cylinder 8 is provided with an inner...

Embodiment 2

[0042] like figure 1 As shown, this embodiment is based on Embodiment 1, and also includes a bracket assembly 2. The bracket assembly 2 includes a U-shaped bracket, which is installed coaxially with the positioning flange 5, and the thread is a trapezoidal thread. The two U-shaped brackets The side wall is vertically outward to form a mounting part, the mounting part is connected to the upper end of the positioning flange 5 by bolts, the top of the U-shaped bracket is provided with a nut, the drive assembly 1 passes through the nut, the bracket assembly 2 and the transmission Rod 3 is connected.

[0043] In this embodiment, the drive assembly 1 and the bracket assembly 2 cooperate to provide power for flow adjustment, and transmit the smooth rotational force in the drive assembly 1 to the axial movement of the transmission rod 3 .

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PUM

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Abstract

The invention discloses a flow regulating system of a passive nuclear fuel irradiation testing device, which comprises a positioning flange, the lower end of the positioning flange is connected with a support tube, the inner wall of the end of the support tube is provided with a support ring, and the lower end of the positioning flange is supported The inner side of the tube is provided with an inner sleeve A, the end of the inner sleeve A is connected to a cylinder, the side wall of the cylinder is provided with a water hole, the end of the cylinder is provided with an inner sleeve B, and the inner sleeve B The end protrudes from the support ring, and the center of the upper end of the positioning flange is provided with a sealing assembly, and also includes a transmission rod. One end of the transmission rod is connected with a slider matching the water hole, and the other end is connected with the drive assembly. Passive operation can be used to complete the control of a certain range of flow in the irradiation device. Even if the flow regulation system is stuck or fails, the irradiation device can still cool the fuel assembly in the reactor without fuel leakage. Assemblies overheating issues to ensure the safety of nuclear fuel irradiation test and research test reactor operation.

Description

technical field [0001] The invention relates to the technical field of reactor fuel irradiation, in particular to a flow regulating system of a passive nuclear fuel irradiation testing device. Background technique [0002] Because the fuel or material will release heat during the irradiation process in the reactor, resulting in an increase in its own temperature, in order to avoid the failure of the test due to overheating of the irradiated fuel or material or affect the safety of the reactor. Therefore, it is necessary to design a corresponding cooling system in the irradiation device, and it is required that the cooling system can regulate the temperature of materials or fuel. The primary circuit water is directly used for cooling in the fuel irradiation device, but in order to keep the irradiation temperature within the range required by the test, it is necessary to adjust the flow rate of the primary circuit water entering the irradiation test section. In addition, any ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/24F16K27/04F16K31/50F16K41/02G21C15/02G21C17/00
CPCF16K3/24F16K27/041F16K31/50F16K41/02G21C15/02G21C17/001Y02E30/30
Inventor 赵文斌杨文华胡晓晖聂良兵童明炎徐斌司丹丹姚亮席航张亮
Owner NUCLEAR POWER INSTITUTE OF CHINA