Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Displacement compensation device for control rod drive line, forming die and forming method thereof

A technology of displacement compensation and mold forming, which is applied to expansion compensation devices for pipelines, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve problems such as inability to perform three-dimensional displacements at the same time, complex bellows structure, and large volume. Achieve the effects of improving displacement compensation ability and fatigue resistance, improving stretch resistance and bending fatigue performance, and requiring low installation accuracy

Active Publication Date: 2017-11-03
AEROSUN CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the bellows as a displacement compensator has a complex structure, and usually can only perform lateral or axial compensation, and cannot simultaneously compensate three-dimensional displacements, and its volume is huge, which cannot meet the needs of displacement compensation in a narrow space

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Displacement compensation device for control rod drive line, forming die and forming method thereof
  • Displacement compensation device for control rod drive line, forming die and forming method thereof
  • Displacement compensation device for control rod drive line, forming die and forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A control rod drive line displacement compensation device of this embodiment, such as Figure 1-6 As shown, it is installed in a circular column space with an outer diameter of φ124mm, an inner diameter of φ58mm, and a height of 46mm. The two ends of the metal bellows 2 are respectively connected to the vertical ferrule joint 4 through seamless joints. After the two ends of the metal bellows 2 respectively extend from the corresponding seamless joints 3 in parallel to the horizontal direction, they are bent in a vertical semicircle to form a vertical U-shaped bends 2-1, 2-3; then horizontal semi-circular arcs are bent to form horizontal U-shaped bends 2-2; the ferrule joint 4 is welded to the control rod pipeline. The position and direction of the ferrule joint 4 are allowed to have a certain amount of deviation, which does not affect the realization of the function and life of the compensation device.

[0046] The end of the steel wire mesh cover 1 is fastened and fix...

Embodiment 2

[0070] This embodiment provides a control rod drive line displacement compensation device, such as Figure 7-9 As shown, among the three continuous curved shapes of the metal bellows in the displacement compensation device for control rod driving line of this embodiment, the second curved shape 2-4 is Ω-shaped. Other structures, molding dies, and heating methods are basically the same as in Example 1. It is installed in a circular column space with an outer diameter of φ150mm, an inner diameter of φ60mm, and a height of 50mm.

[0071] The second curved Ω-shaped bend is composed of a large arc of 210°-240° and two small arcs of 15°-30° respectively connected to the two ends of the arc. The bending radius of the small arcs at both ends is larger than the center of the large circle in the middle. 1.5 times that of the corner arc. Under the same bending radius, because the length of the large central angle arc section of the Ω-shaped bend is longer, the compensation displacement ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a control rod drive wire displacement compensation device which comprises a metal corrugated pipe and a mesh cover wrapping the metal corrugated pipe. The two ends of the metal corrugated pipe are connected with connectors through connecting pipes respectively, and the connectors are perpendicular to the two ends of the metal corrugated pipe. The two ends of the metal corrugated pipe extend in parallel in the horizontal direction from the corresponding connecting pipes and then are bent to form a vertical U-shaped bend through vertical semi-arc bends and oppositely closed to form a horizontal bend through horizontal arcs. The vertical U-shaped bend is organically combined with the horizontal arc bend, and therefore compensation of displacement in the three-dimensional direction can be achieved, the corrugated structure is combined with the deformation degree of the U-shaped bend, so that the displacement compensation capacity is obviously improved, and the telescopic resistance and flexural fatigue performance are greatly improved; and therefore the service life of the displacement compensation device exceeds millions of times, and is obviously longer than that of an existing displacement compensation device. Meanwhile, the structure can be mounted in narrow space such as an annular column, the requirement for mounting precision is low, enough inner pressure and outer pressure resisting capacity is achieved, and medium leakage cannot happen within the life period.

Description

technical field [0001] The invention relates to a displacement compensation device for a control rod driving line, a forming die and a forming method thereof, and belongs to the technical field of flexible connecting pipes for conveying pipelines. Background technique [0002] To the applicant's knowledge, some nuclear reactor control rod drive lines consist of a series of electromechanical hydraulic systems. When it works, the transmission shaft and the control rod bundle move step by step, resulting in relative displacement between the hydraulic transmission components in the control rod, so a device is required to compensate for the displacement while delivering the hydraulic medium. Limited by the structure of the control rods, the installation space of the compensation device is extremely small, and it is required to have sufficient resistance to positive and negative pressures. In order to ensure the long-term operation of the control rod drive line, the displacement ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16L51/02
CPCF16L51/02
Inventor 范荣超张华京郭志承梅鑫翟明智
Owner AEROSUN CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com