Thread and screwed assembly used as high temperatures

A threaded connection and threaded technology, which is applied in the direction of connections, connecting components, threaded fasteners, etc., can solve the problems that the tightening force cannot be transmitted to the threaded connection, cannot reliably withstand the pre-tightening force, etc., and achieve the effect of improving fatigue resistance

Inactive Publication Date: 2003-12-10
SIEMENS AG
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the contrary, in the cold state, that is, at ambient temperature, the tightening force cannot be effectively transmitted to the threaded connection, and the preload cannot be reliably withstand

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
  • Thread and screwed assembly used as high temperatures
  • Thread and screwed assembly used as high temperatures
  • Thread and screwed assembly used as high temperatures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The same reference numerals have the same meaning in all figures.

[0034] figure 1 A longitudinal section through the screw connection in the steam turbine flange 12, not shown, is shown. The flange 12 has a mating thread 4 designed as a female thread. A screw 13 extending along the thread axis 2 is screwed into the counter thread 4 (nut thread 4 ). The screw 13 has a thread 1 designed as a screw thread, which engages in a nut thread 4 . The bolt thread 1 has a thread structure 3, and the nut thread 4 has a matching thread structure 5. Due to the rotational symmetry of the screw 13 with respect to the thread axis 2 , only half of the longitudinal section of the screw 13 is shown. The screw 13 has an end face 17 perpendicular to the thread axis 2, and the screw 13 is screwed into the flange 12 as far as it will go. From here on, the area of ​​the bolt 13 protruding from the female thread 4 of the flange 12 is designated as the engagement initiation area 14 of the t...

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 relates to the thread (1) of a component. Said thread (1) extends along an axis (2) and has a structure (3) that engages with the counter thread (4) of a second component with a counter thread structure (5) in order to produce a screwed assembly. The elastic and / or thermal deformation behaviour of the first component and the second component are different, whereby the thread structure (3) can anticipate deformation in order to compensate for an elastic and / or thermal deformation at a predetermined thermo-mechanical load and said structure is provided with a cylindrical thread area (7) that has a constant diameter (D). The invention also relates to a screwed assembly that can be used at high temperatures.

Description

technical field [0001] The present invention relates to a thread having a thread formation extending along a thread axis for engaging a mating thread having a mating thread formation to form a threaded connection. The invention also relates to threaded connections for high service temperatures. Background technique [0002] Threaded connections consisting of threaded bolts and mating threads (nut threads) are used in many engineering fields, such as machinery manufacturing, equipment manufacturing, and electronic technology. They usually connect two parts to each other and hold them together. One extreme in this regard is small threaded connections, which are used at room temperature and have to transmit only small forces, and the other extreme are large threaded connections, which have to transmit high forces at high temperatures. [0003] From "Schraubenvademecum" by Illgner, K.H. and Blume, D. (1976, Bauer & Schaurte Karcher, Neuss, Germany), especially section 3.5, it ...

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
IPC IPC(8): F01D25/26F01D25/24F16B33/02F16B39/01
CPCY10T403/217F01D25/243F16B33/02
Inventor 德特莱夫·哈杰卡伊·维格哈特
Owner SIEMENS AG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap