JPH0396850A - Electrolytic cell for polarization measurement - Google Patents

Abstract

PURPOSE:To easily and speedily inject an electrolyte and collect waste liquid by providing an opening part and a rotatable opening/closing window above an electrolytic cell and a waste liquid tube provided with a clamp mechanism and an opening/closing valve below the electrolytic cell. CONSTITUTION:This cell is equipped with the opening part 32a provided above the electrolytic cell 32, the opening/closing window 24 which is rotatable through a hinge 23 provided at the lower side of the opening part 32a, and the waste liquid tube 54 which is a flexible tube body provided at the lower part of the electrolytic cell 32 and provided with the clamp mechanism 60 whose tip part is clamped to the outside part of the electrolytic cell 32 and the opening/closing valve 62 which opens and closes its tip opening part. Then the waste liquid tube 54 which is released from the clamp is held almost horizontal after the end of measurement and the opening/closing valve 62 is opened to easily discharge and collect the electrolyte 40 from the electrolytic cell 32 through the waste liquid tube 54. Consequently, the injection of the electrolyte 40 into the electrolytic cell 32 and the waste liquid recovery of the electrolyte 40 from the electrolytic cell 32 are easily and speedily carried out.

Description

[Detailed description of the invention] [Industrial fields of application] The present invention is for non-destructively testing the defects of metal members by measuring the polarization characteristics of the measurement surface of the metal member c/). Regarding the magnetolytic cell used for polarization measurement.

[Conventional technology]

The method of measuring the polarization characteristics of the metal member c/) measurement surface, recording the polarization curve, and inspecting the deterioration state of this gold s4 part 0 using this method has been developed in recent years because the inspection can be performed non-destructively. It has become more popular since 7Jh. The disastrous plan was to remove the metal part and measure the current and voltage curve (hereinafter referred to as polarization curve) obtained when the electrolytic reaction was carried out in an electrolytic solution as a pole. It is known that cinnabar and phosphide octane precipitated by
This is a struggle to detect the deterioration of metal parts (c/).

FIG. 8 is a cross-sectional view showing the structure of three electrolytic cells for measuring polarization. In Fig. 8 I, 4 is a cylindrical cell tube, a lid 10 is attached to the upper part, a wall 12 is attached to the IP Inuya, and a measuring tube 6 is attached to the F part with a screw 4a. .

The cell tube 4 is held up by a corner wall 121, and constitutes an electrode chamber 30 and a '141 disassembly tank 32. The top of the tank is 0.
A reference abrasive pole (saturated calomel toner pole) 6 is installed vertically in a fluid-tight manner by opening the lid 10 with a shell. Potassium) The saturated bath liquid is closely used as a potential transfer liquid. The target electrode is also immersed in the bath 34. ! It is installed straight through the chamber 10 and the chamber 13 (12), and connects the upper part of the chamber 32 with the external environment of the cell 4. The chamber 3 is also recessed inside. After attaching the measuring tube 16 to the metal member ]8 using the injection tube 38 and adding 4υ of military solution from the outside using the injection tube 38, inject it into the injection tube 32, and In the solution horizontal j2 (
J) The gas is visually degassed through the degassing tank 3b. Also, at the end of the measurement, the injection pipe is turned off to release the inside of the electrolytic cell 32.

A plate-like counter electrode 8 is provided by using the 4 wires 42 that follow the cell tube 4 (this is a very lush green tank 3). ) The counter electrode 8 is made of platinum, and the sled is made of metal part of the metal part of the cypress lj1lI leg. Ki'61 is set.

On the measuring tube 16, a disc-shaped adhesive 22 is pasted. A six-page through hole 22a is provided approximately in the center of the Kome Komoun-hx. A Luggin tube 44 is provided through the positive wall 12, and the Luggin tube 44 electrically connects the liquid 40 near the measuring tube 16 and the solution near the reference electrode. I used 0, which was made by gelatinizing the liquid in the crow tube. In addition, the small circle shown in Figure 10, Figure 12, shows the sole material that penetrates the member through which the liquid C penetrates (as described above).

The electrolytic cell 3 for polarization measurement, which is constructed in a rigid manner, is placed on the flat measurement surface 18a of the metal member 18 on the comb sheet 2.
Double-sided adhesive plate 1 with a shell hole 46a of the same size as 2.
46 and attach it so that the through hole 22a of the rubber sheet 22 and the negative through hole 46a of the double-sided tape 4b are aligned. In the closed state, the bulge 32 placed below the partition wall 2 of the cell cylinder 4 is similar to the lower rubber band, and the through holes 22a and 46a of the double-sided adhesive tape 46 are connected to the metal member 18.
The measuring surface 18a is closed in contact with the measuring surface 18a, forming a cheek fluid-tight cavity. Amagai 40 electrolyzes into this liquid-tight space through injection pipe 38! At this time, the gas in the electrolytic cell 32 is naturally degassed through the degassing device 36, and the gas is rubbed so that it is reacted with the electrolyte 40. On the other hand, the electrolytic solution 40 contacts the measurement surface 18a through the through holes 22a and 46a, so that the electrolytic solution 4o and the countermeasure 8 are dissolved by using the measurement surface 18a exposed in the through holes 22a and 40a as a working electrode. A reaction system is constructed. The counter electrode 8 is connected to a potentiostat 50 through four wires 42, and the metal member 18 is connected to a potentiometer 50 via a conductive wire. The collations 1 to 6 are also connected to the botension switch 5o, and are used for determining the reference phase in the above-mentioned solution reaction system C. A recorder 52 is connected to the button stud 1-50, and the measurement results are recorded.

As shown in Figure 8, 'T! After pouring the L solution 4o into the electrolyte tank 32 and measuring it with the electrolyte 8a (fjjl8a and 40f electrolyte), add the electrolytic solution 4o to the electrolyte tank 32.
Therefore, measurement (5) When an appropriate voltage is applied between the fixed member 18a and the counter electrode 8, the measurement surface 18 is applied through the through holes 22a and 46a.
An electrolytic reaction with a as an action analysis is established, and a polarization curve based on this reaction is automatically recorded in the recorder 52. This polarization curve changes depending on the deterioration state of the measurement surface 18a (therefore, it is important to observe this polarization curve (the measurement surface 18a
Inspecting the deterioration state of 8a 3. This is polarization measurement,
A conventional electrolytic cell 3 for polarization measurement is used for this purpose.

[Problem to be solved by the invention]

In the conventional polarization measurement electrolytic cell 3I described based on FIG. Since it has the effect of corroding metals, it is desirable to perform this injection work in as short a time as possible, but conventional methods have the problem that injection takes time. In addition, it is difficult to complete the measurement (because the electrolytic solution 40 must be sucked out and recovered through the narrow injection pipe 38, which is time consuming), which poses a problem in terms of workability.

(6) The present invention solves the above-mentioned problems and provides an mWj. The purpose is to provide cells.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention combines an a solution tank with a counter electrode and an electrode tank with a collation electrode,
'The measuring tube provided in the electrolytic tank is attached to the measuring surface of the metal member whose deterioration is to be measured, and the electrolytic reaction system consisting of the MS liquid and the counter electrode, which are injected into the electrolytic tank with the sub-static surface as the working electrode, and the conductor. The measurement surface is measured and recorded by a botentionstat and a recorder, to which the metal member, counter electrode, and reference electrode are respectively connected via the polarization curve. In the cell, an opening provided at the upper part of the electrolytic cell, an opening/closing window rotatably provided through a checker provided at the lower side of the opening, and a lower part 6 of the 'rts tank. It is provided with a locking mechanism for locking the tip of the sled to the outer side of the electrolytic cell using a flexible tube provided therein, and a drain pipe provided with an on-off valve for opening and closing the opening of the tip of the sled.

[Effect]

The present invention has an opening in the upper part of the electrolytic cell of the electrolytic cell for polarization measurement, a rotatable 7.1' opening/closing window, and a drain pipe in the lower part of the electrolytic cell. After locking the tube to the outside of the electrolytic cell using the locking mechanism, attach the electrolytic cell for polarization measurement onto the flat measurement surface of the metal blade, rotate the opening/closing window to open it, and open the opening/closing window. opening force) inside the electrolytic cell
This allows sacrificial solution g to be injected easily. After the measurement is completed, the unlocked drain pipe is set almost horizontally and the on-off valve is opened, allowing the 'tIL solution to be easily drained and collected from the electrolytic cell internal force via this drain pipe. be able to. This makes it possible to easily and quickly inject the electrolytic solution σ into the IE# tank and recover the drained electrolytic solution from the electrolytic tank 3, thereby solving the conventional problems.

〔Example〕

Embodiments of the electrolysis cell for polarization measurement of the present invention will be described with reference to FIGS. 1 to 7. Among these figures, FIG. 1 is a cross-sectional view showing the structure of an embodiment U) of a polarization measurement cell 20 of the present invention. Figures 2 to 7 show the details of the part indicated by circle A in the first diagram, and Figure 2 shows the details of the part indicated by circle A in the first diagram.
D in Figure 4, which will be described later with a detailed sectional view seen from the same direction as the figure.
-D# This is a diagram corresponding to the diagram. Figure 3 is an inner side view of Figure 2 seen from the top seal B, Figure 4 is a side view of the outer chest seen from arrow C of Figure 2, and Figure 5 is the E-E section of Figure 4. 6 is a sectional view taken along the line FF in FIG. 4, and FIG. 7 is a sectional view showing a state in which the opening/closing window is rotated from the closed state in FIG. 2 to open it.

The similarities between the embodiment of the present invention shown in FIG. 1 and the rice promotion example shown in FIG. Drain the liquid from the bottom of 32'f5
4, and omitted the injection tube 38 provided in the degassing v36, but the other points are the same,
The same elements explained in the conventional example are given the same reference numerals,
The above explanation applies and redundant explanation is omitted.

In FIG. 1C, the upper part ζ of the furnace 32 is the opening 32.
A is provided on the lower side of the opening 32a. There are separate windows that can be opened and closed freely through the gate. The opening (9) mouth portion 32a and each opening/closing window will be explained below based on FIGS. 2 to 7.

As shown in FIGS. 2 and 7, one of the upper parts of the electrolytic cell 32 protrudes, and an opening 32a is provided in this part. A rubber plate Zl"l is provided on the circular side of the lower side of this opening 32a.
, the lower half of each rubber plate 26 on the outside is attached by fixing means such as rivets. The upper half of each of the rubber plates 25, 26, and 26 inserts the opening/closing window, and is rotatably attached to the opening/closing window by fixing means 27l such as rivets. This opening/closing window 24 has quarter-circular side walls 24a integrally formed on both sides facing inward of the electrolytic cells 320.

A separate knob is attached to the opening/closing window 24 (/), and the rotating operation of the opening/closing window is performed from this knob 28i.

As shown in Figures 2 and 4 f, when the opening/closing window is closed, the latch 3 is rotatably supported by the support bin 4.
] is hung on the knob 28I to prevent the opening/closing window 24 from opening. In addition, FIG. 5 shows a cross section of the opening/closing window 24 with the side wall 24a integrally formed, and FIG. An opening 32a of each tank 32 is shown.

Returning to FIG. 1 again, the lower part of the electrolytic cell 32 is provided with a drainage tube made of a flexible tube such as a rubber tube. A locking mechanism 60 consisting of a hook 56 and a locking piece 58 is provided at the distal end of the drain pipe 54, and locks the distal end of the drain pipe 54 to the outer shell portion of the electrolytic cell 32. In addition, the drain pipe 54 (7
An on-off valve 62 is provided to open and close the J tip opening.

The degassing pipe 36 is connected to the injection pipe shown in FIG. 3B is omitted, and a plug 64 is provided at the upper end opening f.

As shown in FIG. 1, the electrolytic cell 2 for polarization measurement of the present invention constructed in this manner is placed on the flat measurement surface 18a of the metal backing 18 in the same manner as in the conventional example described above. Attach. When fitting the drain pipe, close the on-off valve 62 and lock the locking mechanism 6]
Therefore, as shown in the figure (this is fixed to the outside of the electrolytic cell 32), the 360 degassing pipes and the plugs 64 are removed, and the opening/closing window is separated from the second
As shown in FIGS. 7 to 7, the latch 30 is unlocked and the knob is rotated to change the state from the closed state shown in FIG. 2 to the open state shown in FIG. 7. In the state shown in FIG. 7, the slack part of the rubber plate has just been extended and is in a smooth state, and both side walls 24a, 24a of each opening/closing window are in the state shown in the figure, and the electrolyte 40 is poured from the opening 32a of the electrolytic cell 32. Inject the liquid at the desired height in which the counter electrode 8 shown in FIG. 1 is immersed.

At this time, the gas in the electrolytic cell 32 is noticeably degassed through the deaeration pipe 36, and then a stopper 64 is inserted to close the deaeration pipe 36. The electrolyte 40 is injected from the opening/closing window edge, as shown in FIG. ,
It can be done easily. Electrolysis g. 40, the opening/closing window 24 is closed from the state shown in FIG. 7 to the state shown in FIG. .

As mentioned above, the III melting solution 40 is injected into 32 liters of the furnace tank, and the same as explained in the conventional example (here,
Inspect the state of deterioration of a.

When the inspection of the polarization measuring electrolytic cell 2l and the measuring cell 18a is completed, the 'All solution 4' is drained from the drain pipe 54 shown in FIG.
0 is collected in a collection container (not shown). this is,
The locking mechanism 60 is unlocked, the drain pipe 54 is made free, the distal end opening is engaged with the collection container, and the stopper 64 of the degassing pipe is opened.
When the on-off valve 62 is opened, the electrolytic solution 40 naturally flows down and is collected in the collection container, and the atmosphere is naturally flowed into the electrolytic cell 32 through the degassing pipe 36. Electrolyte 40 in electrolytic cell 32
After being collected and discharged, the electrolytic cell 2 for polarization measurement is removed from the measurement surface 18a, and the electrolyte 40 adhering to the metal member 181 is sufficiently removed and cleaned to complete the regular work.

Note that when the opening/closing window is closed, airtightness and liquid tightness are maintained, and when the electrolytic solution 40 is collected, the opening/closing window 24 remains closed. Atmospheric air naturally flows into f132 via the degassing pipe 36. If the electrolytic solution 40 is recovered by opening the opening/closing window, air will naturally flow into the electrolytic cell 32 through the opening/closing window, and also when the electrolytic solution 40 is injected, air will be allowed to flow through the opening/closing window 24. In this case, the installation of the degassing pipe 36 can be omitted since the gas in the tank 32 is naturally deaerated.

The electrolysis cell 2 for polarization measurement of the present invention has an opening 32a at the top of the electrolysis M32 and a rotatable opening/closing window (l3), so that the electrolyte 40 can be easily injected from here. Since the electrolytic cell 32 is equipped with a drain pipe 54, the electrolyte 40 can be easily drained and recovered by operating the drain pipe 540. The workability, which had been a problem due to the time required for recovery, has been improved, and the injection and recovery of the electrolytic solution 40 can now be carried out easily and quickly.

〔Effect of the invention〕

The invention is that the electrolytic cell for polarization measurement has an opening in the upper part of the electrolytic tank, a rotatable opening/closing window, and a drain pipe in the lower part of the electrolytic tank, so that the drain pipe with the on-off valve closed can be connected. Due to the locking mechanism,
aWc tank U outer part (After installing this, install the electrolytic cell for polarization measurement on the metal member V flat 0 side plane (after installing this, open the opening/closing window and insert the injection port in the shape of a funnel into this part. is formed, allowing the electrolyte to be easily injected into the electrolytic cell.After the measurement is completed, the drain pipe, which has been released from the locking mechanism, is held almost horizontally, and the on-off valve is opened. The liquid flows down by gravity and is collected in a collection container, and the electrolyte can be easily drained and collected from the electrolytic cell via the drain fj pipe (14).

As a result, the 0-ton solution is injected into the electrolytic tank and the 0-ton solution is injected into the electrolytic tank.
) It is possible to provide an electrolytic cell for polarization measurement in which the drained electrolyte can be recovered easily and quickly in ζζ rows 1λ, and the problem of work that requires a lot of time is solved.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view (8) showing the $1 configuration of the electrolytic cell for polarization measurement according to the non-inventive embodiment, and Figures 2 to 7 are details of the part indicated by circle 8 in the single-dot chain forest in Figure 1. Fig. 2 is a detailed sectional view taken from the same direction as Fig. J, and corresponds to the o-D* plane of Fig. 4, which will be described later.
3, FIG. 4 is an external side view of FIG. 2 seen from arrow C, FIG. 5 is a sectional view taken along line EE in fourth drawing, and FIG. 6 is a sectional view taken along line FF in fourth drawing. , Fig. 7 is a sectional view showing a state in which the opening/closing window is opened by turning 7 from the closed state in Fig. 2, and Fig. 8 is a sectional view showing the configuration of a conventional polarization measurement cell θ]. It is.

Claims (1)

[Claims] 1) Combine an electrolytic cell with a counter electrode and an electrode cell with a reference electrode, attach the measuring tube provided in the electrolytic cell to the measuring surface of the metal member whose deterioration is to be measured, and place the measuring tube in the electrolytic cell with the measuring surface as the working electrode. A polarization curve of a measurement surface measured and recorded by an electrolytic reaction system consisting of an electrolyte to be injected and a counter electrode, and a potentiostat and a recorder to which a metal member, a counter electrode, and a reference electrode are respectively connected via conductive wires. In an electrolytic cell for polarization measurement that inspects the deterioration state of a measurement surface, the electrolytic cell is rotatably provided through an opening provided at the top of the electrolytic cell and a slot provided at the bottom of this opening. a locking mechanism that locks its tip to the outside of the electrolytic cell with a flexible tube provided at the bottom of the electrolytic cell; and an on-off valve that opens and closes the tip opening. An electrolysis cell for polarization measurement, characterized by comprising a drain pipe provided therein.