JPS5929479A - Current supply terminal for superconductive device - Google Patents

Abstract

PURPOSE:To heighten the reliability in vacuum tightness of the titled device by a method wherein a radiating member, constituted by adhering it to a bus bar through the intermediary of an insulating member, is surrounded by a container and said radiating member is cooled to low temperature using a refrigerant, thereby enabling to eliminate the structural weak point of the inulating part of the device at a low temperature. CONSTITUTION:The refrigerant brought into a container 19 from a refrigerant feeding tube 6 cools a fin tube 18 and then it is exhausted to outside from a refrigerant collecting tube 11. Accordingly, the current applied to a superconductive electromagnetic device 3 is supplied through a bus bar 16, and the heat generated inside the bus bar 16 by the current and the heat penetrated to the terminal 4b, located at the end of the low temperature part, from a terminal 4a is transmitted to the fin tube 18 and cooled by the refrigerant. As the fin tube 18 is insulated from the bus bar 16 using an insulating pipe 17, insulating tubes 8 and 10 are unnecessary for the refrigerant feeding tube 6 and the refrigerant collecting tube 11, and also an insulating tube 15 is unncessary between the container 19 and the upper lid 2. As the insulating pipe 17 is hardened by impregnating epoxy resin into a glass tape, no caracks due to the difference in heat shrinkage rate are generated on the epoxy resin when the bus bar 16 and the fin tube 18 are cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a current supply end of ultra-'t1°C N'f 4A (tl).

[Technical background of the invention and its problems] Gosu, the electric power supply of the conventional superconducting device *: 1^ Child device 1 < 1゛,
Use drawings to clarify errors. Figure 1 shows a vacuum Nena device (2
) is stored in the magnetic (1i1)
(3) is "j" (pass through the two lids (1) to the upper 1115
; ξ connection kM Jll 9: Connected to the lower part of the two current supply terminal devices i2 (4) forming the M element (4a) with a current supply bus (5). 'I'tr, f+
fr, supply terminal device only: (41 has refrigerant supply pipe (6)
Valve (7), insulation pipe (8), pipe (9) branching from 4
・Refrigerant is supplied from the -F side of 1111, and this refrigerant t
e1. -, +Insulated tube +1+11 from one side, refrigerant recovery %T
(II) wojQ tlP out#"l'r,
jQ, 9!7? %7. (21 pc kJ, exhaust device θ powder is connected, radiation seal l'j'; - and superconducting?11; cooling system for magnetic device (3).'' - Q is omitted in the drawing.

Exhaust the inside of the vacuum container (2) with the exhaust device (12) 17! (
stomach? After cooling the device (3), set it to −, then cool the device (3) and then use the tube (6).

Pass the refrigerant through the light supply terminal device 1q (a), Ilt, 6
M, (J (keep the temperature of the feeder bus (5) at a low temperature,
・I,)9. 'rl+; Prevents the temperature of the magnetic Buddha 1 bar (:N) from rising above the cryogenic critical temperature.

The valve (7) is connected so that the cold 12° currents jtl flowing to the two current supply terminal devices i'C (4) are equal.
"11" 1jj-Iro. If the refrigerant 61t of one side'IT, flow supply terminal device (4) is not enough to cool down, connect the Ht flow supply terminal 4'' (4).
It reaches Akatsuki 41, 4-a).

In Figure 2, 'current supply terminal device M' (4) x;)
Connect the connection terminal (4a) and the current supply bus (5) to tl, t, 171. 2) Connect the terminal (side) with the fin tube (f: (+) and surround it with a container (14). Upper lid (2
) through an insulating tube (15).

The refrigerant is supplied from the refrigerant supply pipe (6) through the first edge girder (8) and the pipe (9) to the fin tube 0 in the container (14).
3) No. 1 (heat generated by the L flow and D: cools the intrusion heat from the LA element (4a)).

In the case of such a structure, an insulating tube (8), tlUl, (15) is used for electrical insulation between the supply terminal device (4) and the vacuum container (1). stomach). Insulating tubes (8), 00), (15) are generally made of ceramic tubes and copper tubes with silver solder.
Attaches to metal through a cool tube [2 steps].

However, due to the difference in heat shrinkage between ceramics and copal, it was not reliable at low temperatures, and leaks often occurred from the soldering part (1).When the refrigerant leaked, it The degree of vacuum decreases and
tll 2! 'Fden? i) There was a drawback that heat entered the i-device (!)) and the temperature exceeded the critical temperature, making it impossible to operate.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks, and has the following characteristics: 11) The low-temperature structure of the insulating part in the optical supply terminal device. (1 of the °C conductor
(A) The purpose is to provide a flow supply terminal device.

[Summary of the invention]

That is, the superconducting device 1'7 of the present invention? lf, 6M
The supply system 11.1 consists of a bus bar with a heat radiating part such as a fin tube fixed to the bus bar through an insulating part, and this heat radiating part is surrounded by a container and cooled to a low temperature with a refrigerant.7:11- It's 4 and 1.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described and explained below.

In Fig. 3, the same parts as in Fig. 2 are used.
Since the numbers are the same, the explanation will be omitted. The difference is that the power supply connection terminal (4a) and the terminal (4b) that is tied to the flow supply bus (5) are connected with a tubular fuser (flit), and the busbar 0G is insulated. (Fix fin tube (1 barrel through +71, fin tube (1 barrel)
8) Welded an airtight seal to both ends of the container 01
(I) Before raising (ll VC airtight seal welded.Insulating tube (171iJ: For example, bus bar (IGI) by wrapping glass tape around it and inserting it inside the fin duplex (181) and impregnating it with epoxy resin and heat curing. and form it.

With this configuration, the refrigerant supply pipe (6) is connected to the ventilator (I).
The refrigerant that has entered the fin tube (1) 9 cools the refrigerant cycle. 1 discharged from ff (I +) to the outside, and therefore the current to the superconducting electromagnetic device (3) is supplied through the bus bar 06), and heat generation due to the current in the bus bar (port i) and from the outside air terminal (4a) The heat that enters the terminal (4b) at the low temperature end is transmitted to the fin tube (l→) via the insulating cylinder (+7) and is cooled by the refrigerant.

The fin tube (18) is a bus bar with an insulating tube (17).
- (Since it is insulated from ! ) and top lid (
The insulating tube (19) is not required between the insulating tube (2) and
[7] Since the glass tape is impregnated with epoxy resin and cured, there will be no cracks in the epoxy 417.1 resin due to the difference in thermal shrinkage when the bus bar (Ifil) and fin tube OW are cooled. (lf
i) and the fin tube (18).
) External qi never leaks inside.

FIG. 4 shows another embodiment, showing two positive and negative terminals (4
A fin tube (18) fixed to the tubular bus bar connecting between a) and the terminal (41) through an insulating tube (71) is stored in parallel in one container <1'11. This is possible because each bus bar 0) is insulated from the container 01Q via an insulating cylinder 071, and two 117. Since the cooling circuit b'N is one system for the light supply terminal device, the conventional refrigerant flow rate adjustment valve (71&J is not necessary).

FIG. 5 shows another embodiment, in which a plurality of rod-shaped bus bars at9 are fixed to each other through an insulating tube 07).
fJ) in parallel in one container (stored in 140).

Depending on the current carrying capacity of the current supply terminal device, the above-mentioned fin tube is not necessary, and a pipe is connected to 11+.

〔Effect of the invention〕

As described above, according to the present invention, d:, Superden 2! j, device C′
(T1<.

The light supply terminal device u is constructed by fixing the heat dissipating part through an insulating part on a bus bar that connects the vacuum container to Sl 3+11, and surrounding the heat dissipating part side with a container. Since the heat dissipation material is used to radiate heat to the refrigerant through the busbar U insulation part, the operation is good (T1), and the insulation part does not crack due to the difference in thermal contraction, making it reliable in terms of vacuum. Highly sexual. It is also possible to cool different current supply terminal devices of °f current 61 with one cooling circuit, 11. -4- It has outstanding effects such as being extremely stable and easy to manufacture.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing a conventional ultra-conductor device, Fig. 2 is a longitudinal cross-sectional view showing the supply terminal device 1゛ (1) ii of Fig. 1; Figure 1 shows the superconducting device of the present invention; It is a vertical cross-sectional view showing an example. (1)..." two lids, (2)... JC Kuriya container 3)... super'lU4.2, 11i', magnetic device, (4)... ... 1st ward flow supply end handmade installation f!? (llii・
... Bus bar, (17) ... Insulation tube, θε:)
...fin tube, ([1t..container (211+.
...Representative of radiator Patent attorney Mr. 1 Figure 2 Figure 3 Figure 4 Figure 5 350-

Claims (1)

[Claims] Surrounding the bus bar with a heat dissipation member via an insulating layer,
Flow the cold lll1: on the outside 1111 of this heat dissipation member, j7
T11: Flow supply end of the superconducting device with 1y:r characteristics and surrounded by a container to +.