JPS5822124Y2 - Sealed capsule device for creep test in sodium - Google Patents

Description

[Detailed description of the invention] By forming a capsule that is integrated with the test piece, the present invention enables creep testing of the test piece in a liquid sodium atmosphere to be measured using a general-purpose measuring machine, allowing for inexpensive collection of large amounts of data. This invention relates to a hermetically sealed capsule device for creep testing in sodium.

As shown in FIG. 2, the conventional creep test device in sodium uses a large special device 101 to create a sodium environment, which makes the test device expensive and requires a large amount of test piece data. However, there was a drawback of insufficient data.

In the figure, 102 is liquid sodium, 103 is a test piece, and 104 is a load.

The present invention solves the above-mentioned drawbacks of the conventional sodium atmosphere creep test equipment, and by forming a capsule integrated with the test piece, it is possible to measure the creep test of the test piece in a liquid sodium atmosphere with a general-purpose measuring machine. The purpose of the present invention is to provide a sealed type sodium leak test capsule device that enables the collection of a large amount of data at low cost. 3 and the lower end of the bellows ring I is welded to the lower end of the bellows ring 1, and the upper end of the outer cylinder 8 for enclosing sodium surrounded by the heating body 14 is welded to the bottom of the outer cylinder 8. Lid 13
is fixed, and the upper rod 6 is screwed through the bellows lower ring 7 to the bellows upper lid 3, and the outer cylinder bottom lid 13 is fixed.
The lower rod 12 is screwed coaxially with the upper rod 6 to form a capsule in which the test piece 10 is set between the upper rod 6 and the lower part 07112, and the upper pull rod 1 is screwed coaxially with the upper rod 6 to the bellows upper lid 3, respectively. , a lower pull rod 15 is screwed onto the bottom lid 13 of the outer cylinder, and a load 18 is applied to the lower end of the lower pull rod 15. .

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

In the figure, this embodiment centers on a bellows 4, and combines a bellows upper lid 3, which has a sodium-filled tube 2 through its upper and lower ends, and a bellows lower ring I to form an integral part, and the bellows upper part of this integral part. The upper end of the upper rod 6 is screwed onto the lid 3 through the bellows lower ring 7, the upper end of the test piece 10 is set on the lower end of the upper rod 6 with the upper pin 9, and the lower rod 1 coaxial with the upper rod 6 is attached to the lower end of the test piece 10.
2 Set the upper end to the same stock with the lower pin 11, and lower the lower rod 1
2, and the outer cylinder 8 for filling sodium enclosed in the heating furnace 14 is attached to the bellows lower ring I.
and the test piece 10 is fixed to the bottom cover 13 of the outer cylinder by welding.
The upper pull rod 1 can be connected to the bellows upper lid 3 at the upper end of the capsule, and the lower pull rod 15 can be connected to the outer cylinder bottom lid 13 at the lower end of the capsule.

, and 16 and 17 respectively indicate welded parts.

As described above, in the sealing method of the present invention, a test piece is set in a capsule (only the upper part has a bellows), and this test piece is immersed in a corrosive high-temperature liquid sodium atmosphere sealed in an outer cylinder. However, there is no direct contact between the liquid sodium and the bellows.

In this configuration, during the creep test, liquid (IJ) is sealed from the sodium sealing tube 2 into the outer cylinder 8, and after sealing, the sodium sealing tube 2 is closed, and then the bellows upper lid 3 at the upper end of the capsule and the outer cylinder at the lower end are sealed. An upper pull rod 1 and a lower pull rod 15 are respectively screwed onto the bottom lid 13 coaxially with the upper rod 6, and a load 18, which is a tensile load directly under a weight, is applied to the lower end of the lower pull rod 15.

In this way, by applying a load to the capsule, measurement can be performed using a ready-made general-purpose measuring device.

In other words, the present invention regards the capsule and test piece as an integrated rigid body and applies a load to each capsule, so the elongation of the test piece can be determined as the displacement of the capsule using a general-purpose measuring machine, making it extremely useful for measuring elongation. was able to bring significant benefits.

The effects of the present invention are as follows.

(1) The same effect can be achieved by downsizing the special atmosphere testing equipment for liquid sodium.

(2) The capsule integrated with the test piece can be left in its casing, and the capsule itself can be set as a test piece in a general-purpose ready-made measuring device at any time, so a large amount of data can be collected at low cost.

The device of this invention is capable of carrying out creep tests in liquid sodium, leaf tests in argon gas, relaxation tests in liquid sodium, and argon gas tests on specimens of heat exchanger tubes, which are part of the components of liquid metal cooled fast breeder reactors. It can be applied to relaxation tests in gas, tensile tests in liquid sodium, and tensile tests in argon gas.

As described above, the present invention can be measured with a general-purpose measuring machine by forming a capsule integrated with the test piece.
We provide a sealed capsule device for creep testing in sodium that enables the collection of large amounts of data at low cost.
It is particularly useful for the above-mentioned various measurements of test pieces of equipment materials used in the nuclear field.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view of a conventional creep test device in sodium. In the figure, 1... upper pull rod, 2...
... Sodium sealed tube, 3 ... Bellows upper cover, 4 ... Bellows, 5 ... Sodium liquid level, 6 ... Upper rod, I. ... Bellows lower ring, 8 ... Outer cylinder, 9 ... Upper pin, 10 ... Test piece, 11 ... Lower pin, 12 ...Lower rod, 13...
・Outer cylinder bottom lid, 14... Heating furnace, 15...
...Lower pull rod, 16...Top welded part, 1
7...Lower welded part, 18...Load,
101...Large special equipment, 102...
Liquid sodium, 103...Test piece, 104.
·····Load.

Claims (1)

[Scope of utility model registration request] A bellows upper lid 3 with a sodium sealing tube 2 passing through it is coupled to the upper end of the bellows 4, and a bellows lower ring I is coupled to the lower end of the bellows 4, and an outer cylinder 8 for containing sodium surrounded by a heating body 14 is attached to the bellows lower ring 1. At the same time as welding the upper end, the outer cylinder bottom cover 13 is fixed to the bottom of the outer cylinder 8, and the bellows lower ring 7 is passed through the bellows upper cover 3 to connect the upper rod 6.
At the same time, attach the lower rod 12 to the bottom cover 13 of the outer cylinder.
are screwed coaxially with the upper rod 6 to form a capsule in which the test piece 10 is set between the upper rod 6 and the lower part 07112, and the upper pull rod 1 is screwed onto the bellows upper lid 3 coaxially with the upper rod 6, respectively. A sealed capsule device for creep testing in sodium, characterized in that a lower pull rod 15 is screwed onto the bottom lid 13 of the outer cylinder, and a load 18 is applied to the lower end of the lower pull rod 15.