Unlock instant, AI-driven research and patent intelligence for your innovation.

A bolt tensioning machine for nuclear reactor pressure vessel sealing

A pressure vessel and nuclear reactor technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of unrealizable pressure, insufficient installation space, large tensile force, etc., and achieve easy localization, strong versatility, and improved The effect of pulling force

Inactive Publication Date: 2016-11-30
DALIAN JIAOTONG UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of installation space and the large tensile force that needs to be output, the bolt tensioning machine generally uses an ultra-high pressure hydraulic system, and the domestic existing technology generally cannot achieve such a high pressure

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
  • A bolt tensioning machine for nuclear reactor pressure vessel sealing
  • A bolt tensioning machine for nuclear reactor pressure vessel sealing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, a fully hydraulically driven bolt tensioning machine with a series-parallel structure includes a tensioning nut driving gear 1, a tensioning nut hydraulic motor 2, a tensioning nut 3, a thrust connector 4, a driving cylinder 5, and an annular mounting seat 6 , pre-tightening nut hydraulic motor 7, pre-tightening nut driving gear 8;

[0032] The tension nut hydraulic motor 2 is fixed on the thrust connector 4, and the output shaft of the tension nut hydraulic motor 2 drives the tension nut 3 to rotate through the tension nut driving gear 1;

[0033] The tension nut 3 and the pre-tightening stud 13 are connected to each other through thread fit, and the lower end surface thereof is in contact with the thrust connector 4, and the driving cylinder 5 pushes the thrust connector 4 and the tension nut 3 to move upwards, thereby being stretched. The...

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 bolt tensioning machine for nuclear reactor pressure vessel sealing, which comprises a tension nut drive gear, a tension nut hydraulic motor, a thrust connector, a drive oil cylinder, an annular mounting seat, a pre-tightening nut hydraulic motor and a pre-tightening nut Nut drive gear. The present invention adopts full hydraulic drive, and since the power density of the hydraulic drive is higher than that of ordinary gears and other mechanical transmissions, the volume of the equipment of the present invention is small. The present invention adopts hydraulic cylinders with a series and parallel structure, and the driving cylinders are installed symmetrically on both sides of the central axis of the stretching machine. The output pull of the machine. The invention can realize complete automation in the process of use, thereby reducing the nuclear radiation damage suffered by operators. The invention adopts a single structure, and the number of bolt tensioning machines can be selected according to the size of the nuclear reactor, thereby satisfying nuclear reactors of various sizes.

Description

technical field [0001] The invention relates to a bolt tensioning device, in particular to a bolt tensioning machine used for sealing nuclear reactor pressure vessels. Background technique [0002] At present, the main forms of power generation in my country are thermal power and hydropower. However, hydropower and thermal power are far from meeting the needs of national economic development and people's daily life. Therefore, it is imperative to develop new energy sources. As a new clean energy, nuclear power generation is accepted by more and more countries. It is the most mature and widely used new energy after hydropower and thermal power. On the one hand, hydropower is limited by the geographical environment, and on the other hand, it will affect the local ecological ring. The main disadvantage of thermal power generation is that it pollutes the environment, and the coal burned is a non-renewable resource. Some developed countries have adopted nuclear power generatio...

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): B23P19/06
Inventor 谭晓东宋丕伟杜林类延磊赵博
Owner DALIAN JIAOTONG UNIVERSITY