JPS642465Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses conductors for measurement, current supply, etc. in vacuum containers such as vacuum insulation walls of cryogenic liquid storage tanks such as liquefied gases, and space chambers for space simulation tests. This invention relates to a conductor extraction device suitable for use when extracting a conductor from a vacuum to atmospheric pressure.

A conventional conductor extraction device is shown in FIG. Reference numeral 1 represents a main body support portion whose lower end is connected to a vacuum container, and 2 represents a vacuum portion that communicates with the vacuum container. 3 is the main body support part 1
A cap 5 screwed onto the cap 5 is attached to a pin support plate 6 with a pin through which a conductive wire 10 is passed through a hole 9 at the tip, and this pin support plate 6 is attached to the main body support part 1 through the cap 3. At that time, in order to isolate and seal the atmospheric pressure part and the vacuum part 2, an O-ring 4 made of an elastic material such as rubber is inserted between the pin support plate 6 and the main body support part 1. The upper and lower surfaces of the O-ring 4 function as a seal by tightening together the threaded portions provided on the upper and inner surfaces of the cap 3. In addition, the gap between the conductor 10 and the pin tip hole 9 is sealed with solder, adhesive, etc.
The gap between the pin 5 and the pin support plate 6 is sealed by welding and solidifying glass 8 or the like having good electrical insulation.

7 is a guide for fitting the connector,
If the conductor passes through the pins as shown in Figure 1, there is no need to use a connector.

However, this conventional device has the following drawbacks.

(A) Pin 5 installed depending on the size of pin support plate 6
As a result, it is difficult to take out a large number of conducting wires from vacuum into the atmosphere.

(a) Since the upper and lower surfaces of the O-ring 4 serve as sealing parts, the seal is likely to be incomplete.

(C) If the conductor is a thermocouple wire, when the thermocouple wire is passed through the pin and sealed using a non-metallic adhesive to prevent alloy formation at the pin tip hole 9, the adhesive has a strong adhesive force. It is difficult to remove and reuse expensive thermocouple wires.

The present invention was proposed in order to eliminate the drawbacks of the conventional device as described above, and is a device for taking out a conducting wire from an opening of a vacuum container, which includes a protrusion formed on the end face of the opening so as to surround the opening; a plate-shaped elastic member that comes into contact with the upper surface of the protrusion and closes the opening;
Provided is a conductor wire extraction device comprising a mounting member that engages with the outer periphery of the opening and presses the elastic member against the protrusion, and is adapted to penetrate the elastic member and take out the conductor wire.

According to the present invention having the above configuration, a larger number of conductive wires can be taken out into the atmosphere than when using pins, and the sealing surface of the O-ring can be
By making it a surface, the sealing function is improved, and when the conducting wire is a thermocouple wire, errors in temperature measurement can be avoided and the thermocouple wire can be reused.

An embodiment of the present invention lead wire extraction device will be described with reference to FIG.

Reference numeral 21 is a tubular opening whose lower end is connected to a vacuum container or the like, and the inside thereof is a vacuum section 22 . A protrusion 23 is formed on the upper end surface 21A of the opening 21 over the entire circumference.
It is shaped like a circle surrounded by 3.

Reference numeral 24 is a circular plate-shaped elastic member that is brought into contact with the upper surface of the protrusion 23 and closes the opening 21 .

A male thread is cut on the outer circumferential surface 21B of the opening 21, and the mounting member 25, which has a female thread on the inner surface that engages with this male thread, is attached to the upper end surface 21B of the opening 21.
It has a locking part 25A that covers A.

Reference numeral 26 denotes a donut-shaped presser plate, which is placed on the elastic member 24.

As shown in the figure, the conducting wire extraction device constructed in this manner has an elastic member 24 and a presser plate 26 on the protrusion 23.
are stacked on top of each other, and the mounting member 25 is screwed onto the outer circumferential surface 21B of the opening 21 to assemble. At this time, if the mounting member 25 is sufficiently tightened, the locking portion 25
By A, the elastic member 24 is connected to the presser plate 26 and the protrusion 2.
It is compressed between 3 and 3. In other words, the vacuum section 22 is airtightly sealed between the protrusion 23 and the elastic member 24.

Now, the method of passing the conducting wire 27 through the elastic member 24 is to pass a syringe needle whose inner diameter is slightly larger than the conducting wire 27 through the elastic member 24, pass the conducting wire through the syringe needle, and then pull out only the syringe needle. . Conductor 27
To avoid the gap that occurs between the conductor 27 and the elastic member 24, apply a thin layer of vacuum grease or the like to the surface of the conductor 27 before passing the conductor 27 into the injection needle, or remove the penetration part of the conductor 27 after removing the injection needle. You can apply vacuum grease, etc.

According to the take-out device of this embodiment, (1) Since there is no particular problem in passing a large number of conductive wires 27 through the elastic member 24, it is possible to take out a large number of conductive wires 27 from the vacuum section 22 into the atmosphere. becomes possible.

(2) It is not necessary to seal each conductive wire 27, and the sealing surface is only the area between the elastic member 25 and the protrusion 23, so the sealing function is improved.

(3) Even if the conductor wire 27 is a thermocouple wire, it cannot be "soldered".
Since there are no connecting parts to metals such as metals, it is possible to eliminate the cause of errors in temperature measurement.

(4) Even if the conductor 27 is an expensive thermocouple wire,
Since there is no connection part using "solder" or the like, the conductive wire 27 can be removed and reused.

Effects such as this can be obtained.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of a conventional conductor extraction device, Figure 2
The figure shows an embodiment of the conductor extraction device of the present invention. 21...opening, 21A...end face, 21B...
Outer peripheral surface, 22... Vacuum part, 23... Protrusion, 24
...Elastic member, 25...Mounting member, 26...Press plate, 27...Conductor.

Claims (1)

[Scope of utility model registration request] A device for taking out a conductor from an opening of a vacuum container, the device comprising: a protrusion formed on an end face of the opening so as to surround the opening; a plate-shaped elastic member that comes into contact with the upper surface of the protrusion to close the opening; and the opening. A conductor wire extraction device comprising a mounting member that engages with the outer periphery and presses the elastic member against the protrusion, and is configured to penetrate the elastic member and take out the conductor wire.