RU2020619C1 - Superconductor twisting device - Google Patents

Abstract

FIELD: process equipment for manufacturing superconductors. SUBSTANCE: superconductor twisting device has repeller, twisting frame, receiver, and tool placed between twisting frame and repeller. Tool is made as roller mounted in rotating bushing and rotating in direction opposite to that of twisting frame. EFFECT: improved reliability, simplified design. 1 dwg

Description

 The invention relates to technological equipment used in the production of composite superconductors.

 A device is known that contains a pickup with a brake element, a torsion drum kinematically connected with an electric drive, traction units with a bypass roller, draw units, a receiver (ed. St. USSR N 990005, class N 01 B 13/00).

 A device is known comprising a transmitter, a drive, an external torsion frame kinematically associated with it, an internal torsion frame associated with it, and a receiver. The connection between the internal and external torsion frames is carried out through the electric motor by rigidly fixing the external frame on the stator of the electric motor, and the internal one on its rotor [1].

 The proposed solution requires the use of a special electric motor and a two-frame twisting device of increased complexity with an additional control system.

 The aim of the invention is to simplify the design of the device while increasing reliability.

 This is achieved by the fact that in the device for twisting a superconductor with a low level of residual stresses, containing a detector, a torsion frame and a receiver, an additional torsion device located between the torsion frame and the receiver, kinematically connected with the torsion frame and made, for example, in the form of a roller, fixed in the rotating sleeve, while the directions of rotation of the additional torsion device and the torsion frame are opposite.

 The drawing shows a functional diagram of a device for twisting a superconductor.

 The device includes a transmitter 1, a torsion frame 2, a receiver 3. An additional torsion device 4 is installed between the torsion frame and the receiver, made in the form of a roller 5 fixed in a rotating sleeve 6. The twisted superconductor 7, passing through the additional torsion device, covers the roller 5. Torsional the device 4 is kinematically connected via a transmission 8 with a torsion frame 3 and a drive 9.

±

, где V_л - линейная скорость сверхпроводника; n - число оборотов крутильной рамки 2; n₁ - число оборотов дополнительного крутильного устройства. Знак минус относится к случаю встречного вращения рамки и дополнительного крутильного устройства, знак плюс - при их вращении в одном направлении. Очевидно, что l при n₁ = 0 будет равно

. Итак, при встречном вращении на участке A:
l =

-

При попутном вращении:
l =

+

На участке Б (т.е. окончательный шаг твиста) при встречном движении:
l =

-

+

=

При попутном движении:
l =

+

-

=

Вышеприведенные вполне очевидные соотношения говорят о том, что при встречном вращении крутильной рамки 2 и дополнительного крутильного устройства 4 на участке А мы имеем шаг твиста менее заданного шага твиста l, а на участке Б происходит его увеличение на величину

, т.е. в конечном итоге шаг твиста l, независимо от того, вращается или нет дополнительное крутильное устройство, остается равным

.The device operates as follows. The superconductor 7, unwinding from the coil of the pickup 1, while drawing and rotating the torsion frame 2, twists about its longitudinal axis with a given twist step l. In this case, the twist step l in section A will be equal to
l =

±

where V _l is the linear velocity of the superconductor; n is the number of revolutions of the torsion frame 2; n ₁ - the number of revolutions of the additional twisting device. The minus sign refers to the case of counter rotation of the frame and the additional torsion device, the plus sign - when they rotate in the same direction. Obviously, l for n ₁ = 0 will be equal to

. So, with counter rotation in section A:
l =

-

In case of passing rotation:
l =

+

In section B (i.e., the final twist step) with oncoming traffic:
l =

-

+

=

In passing traffic:
l =

+

-

=

The above quite obvious relations indicate that, when the torsion frame 2 and the additional torsion device 4 are counter-rotated in section A, we have a twist step less than a given twist step l, and in section B it increases by

, i.e. in the end, the twist step l, regardless of whether or not the additional torsion device rotates, remains equal

.

 Thus, the use of the simplest in design additional twisting device allows twisting with additional unscrewing with the opposite sign of deformation. Using the proposed solution provides a decrease in the level of residual stresses both in superconducting fibers and in the matrix. At the same time, simplification of the design and increase of operational reliability are achieved. Improving reliability is achieved primarily by eliminating the need for a servo system to control the drive of an additional external frame.

Claims (1)

 DEVICE FOR TWISTING A SUPERCONDUCTOR, comprising a transmitter, a torsion frame with a drive and a receiver, characterized in that it is provided with a device located between the torsion frame and the receiver and kinematically connected with the drive, made in the form of a roller mounted in a rotating sleeve with a rotation direction opposite to the rotation of the torsional framework.

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