CN213041709U - Device for in-situ measurement of sensitization degree of stainless steel pipeline - Google Patents

Abstract

The utility model discloses a device for in-situ measurement of stainless steel pipeline sensitization degree, which comprises an electrolytic cell box body, wherein the top of the electrolytic cell box body is fixedly connected with a top cover, the inside of the top cover is respectively and fixedly connected with a rubber plug and a rubber plug, the inside of the rubber plug is fixedly connected with a reference electrode, the inside of the rubber plug is fixedly connected with a Lujin capillary tube, the inside of the top cover is positioned at the front side and the rear side of the rubber plug and is all in through connection with a restraint strap, in the utility model, through arranging a test reaction nozzle, the electrolytic cell box body, the top cover and other devices, the sample surface can be collected through the test reaction nozzle, different sample surfaces can be measured by adopting the test reaction nozzle with different aperture openings, the first mounting hole and the second mounting hole are arranged on the top cover, so that the rubber plug and the rubber plug can be conveniently mounted with the reference electrode and the, the device is simple in structure, convenient and practical.

Description

Device for in-situ measurement of sensitization degree of stainless steel pipeline

Technical Field

The utility model relates to a stainless steel pipeline sensitization degree device technical field especially relates to a device of stainless steel pipeline sensitization degree is measured to normal position.

Background

The heat treatment (including welding) of corrosion resistant alloys results in the precipitation of fine particles, such as chromium carbide in 304 stainless steel or sigma phase (FeCrMo) in duplex stainless steel, the extent of the diffusion of alloying elements in the matrix is determined by the temperature, and the formation of fine particles, if not supplemented by the diffusion of alloying elements in the matrix, leads to the depletion of alloying elements in the adjacent areas, which is often referred to as sensitization, and the poor corrosion resistance of the alloy element depleted areas and the susceptibility to stress corrosion cracking, the extent of this failure mechanism depends on the extent of the depletion of alloying elements and the density of the alloy element depleted areas, and the Electrochemical Potentiodynamic Reactivation (EPR) is a test method for the rapid determination of potentially detrimental thermal effects in stainless steel and nickel-based alloys.

At present, the sensitization degree measurement of the stainless steel pipeline is generally performed in a laboratory by using a processed sample, but the measurement device cannot meet field equipment at a station, so that a new sensitization degree measurement device is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a device for measuring the sensitization degree of a stainless steel pipeline in situ.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a device of normal position measurement stainless steel pipeline sensitization degree, includes the electrolytic cell box, electrolytic cell box top fixedly connected with top lid, inside fixedly connected with rubber stopper and the rubber buffer respectively of top lid, the inside fixedly connected with reference electrode of rubber stopper, the inside fixedly connected with of rubber buffer lu golden capillary, inside and being located rubber buffer front side and the equal through connection in rear side of top lid has about band, the elongated slot has been seted up with about band corresponding position to top lid inside, the experimental reaction mouth of the inboard fixedly connected with of electrolytic cell bottom half, electrolytic cell bottom half fixedly connected with working electrode, the mounting groove has been seted up with working electrode corresponding position to electrolytic cell bottom half.

As a further description of the above technical solution:

the rubber stopper is located rubber stopper one side.

As a further description of the above technical solution:

and a first mounting hole and a second mounting hole are respectively formed in the top cover at positions corresponding to the rubber plug and the rubber plug.

As a further description of the above technical solution:

the number of the restraint belts is two, and the two restraint belts are symmetrical with each other about the central axis of the top cover.

As a further description of the above technical solution:

the electrolytic cell box bottom and the corresponding position of experimental reaction mouth have seted up the reaction mouth installing port, experimental reaction mouth is inside to be seted up the opening.

As a further description of the above technical solution:

the number of the installation grooves is two, and the two groups of installation grooves are symmetrical about the central axis of the electrolytic cell box body.

The utility model discloses following beneficial effect has:

1. the utility model provides a device of stainless steel pipeline sensitization degree is measured to normal position compares with traditional device, through being provided with experimental reaction mouth, devices such as electrolytic cell box and top lid, can gather the style surface through experimental reaction mouth, the sample surface that the adoption has different apertures opening experimental reaction mouth can measure the difference, cover the installation that is provided with first mounting hole and second mounting hole rubber stopper and rubber buffer of being convenient for at the top, at rubber stopper and rubber buffer kind installation reference electrode and robust golden capillary, the device simple structure, convenient and practical.

2. Compared with the traditional device, the device has the advantages that the structure and the design are greatly innovated and improved, the top cover and the restraint belt are provided with the elongated slots at the corresponding positions through the devices such as the restraint belt, the restraint belt is convenient to mount on the top cover, the pattern can be better fixed through the restraint belt, the pattern is in close contact with the devices, the test is convenient to carry out, and the device is worth popularizing.

Drawings

FIG. 1 is a front view of a section of a device for in-situ measurement of sensitization degree of stainless steel pipeline according to the present invention;

fig. 2 is a cross-sectional side view of the device for in-situ measuring the sensitization degree of the stainless steel pipeline provided by the utility model;

FIG. 3 is a side view of the device for in-situ measurement of sensitization degree of stainless steel pipeline according to the present invention;

fig. 4 is a top view of the device for in-situ measuring the sensitization degree of the stainless steel pipeline provided by the present invention;

FIG. 5 is a front view of the electrolytic cell case;

FIG. 6 is a side view of the cell housing;

FIG. 7 is a top view of the electrolytic cell case;

FIG. 8 is a front view of a cross section of a test reaction nozzle;

FIG. 9 is a front view of a test reaction nozzle;

FIG. 10 is a top view of a test reaction nozzle;

FIG. 11 is a front view in section of the top cover;

FIG. 12 is a front view of the top cover;

fig. 13 is a top view of the top cover.

Illustration of the drawings:

1. a lujin capillary; 2. a restraint band; 3. a working electrode; 4. a test reaction nozzle; 5. a reference electrode; 6. an electrolytic cell box body; 7. a top cover; 8. a rubber stopper; 9. mounting grooves; 10. a rubber plug; 11. a reaction nozzle mounting port; 12. a port; 13. a second mounting hole; 14. a first mounting hole; 15. a long groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-13, the present invention provides an embodiment: the utility model provides a device of normal position measurement stainless steel pipeline sensitization degree, including electrolytic cell box 6, 6 top fixedly connected with top lids 7 of electrolytic cell box, inside fixedly connected with rubber stopper 8 and the rubber buffer 10 respectively of top lid 7, the inside fixedly connected with reference electrode 5 of rubber stopper 8, the inside fixedly connected with of rubber buffer 10 lu golden capillary 1, top lid 7 is inside and be located rubber buffer 10 front side and rear side and all run through connection have about band 2, top lid 7 is inside and about band 2 corresponding position seted up elongated slot 15, the inboard fixedly connected with test reaction mouth 4 in electrolytic cell box 6 bottom, 6 bottom fixedly connected with working electrode 3 of electrolytic cell box, 6 bottoms of electrolytic cell box have seted up mounting groove 9 with 3 corresponding positions of working electrode, be provided with EPR solution (not drawn in the picture) in the electrolytic cell box 6.

The rubber stopper 10 is positioned on one side of the rubber stopper 8, the rubber stopper 10 and the rubber stopper 8 have good elasticity and friction coefficient, so that the reference electrode 5 and the Rougin capillary 1 can be conveniently fixed, meanwhile, the whole tightness of the device can be ensured, the positions, corresponding to the rubber stopper 8 and the rubber stopper 10, in the top cover 7 are respectively provided with a first mounting hole 14 and a second mounting hole 13, so that the rubber stopper 8 and the rubber stopper 10 can be conveniently and fixedly mounted, the number of the restraint belts 2 is two, the two restraint belts 2 are symmetrical about the central axis of the top cover 7, the sample can be conveniently fixed by the restraint belts 2 and closely contacted with the whole device, the position, corresponding to the test reaction nozzle 4, at the bottom of the electrolytic cell box body 6 is provided with a reaction nozzle mounting port 11, the interior of the test reaction nozzle 4 is provided with a through port 12, so that the sample can be conveniently placed into the electrolytic cell box, the number of the mounting grooves 9 is two, and the two groups of mounting grooves 9 are symmetrical about the central axis of the electrolytic cell box body 6, so that the working electrodes 3 can be conveniently and fixedly mounted.

The working principle is as follows: the utility model provides a device and traditional device that stainless steel pipeline sensitization degree was measured to normal position have great improvement innovation, when using this device that stainless steel pipeline sensitization degree was measured to normal position, at first put into electrolytic cell box 6 with opening 12 on the style through experimental reaction mouth 4, react with EPR solution, simulate corrosive environment, through reference electrode 5 and the gold capillary 1 of robustness that sets up at electrolytic cell box 6, then transmit the concentration change of EPR solution for working electrode 3, finally reach stainless steel pipeline's sensitization degree through carrying out the detection of volt-ampere curve to working electrode 3.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides a device of normal position measurement stainless steel pipeline sensitization degree, includes electrolytic cell box (6), its characterized in that: the top of the electrolytic cell box body (6) is fixedly connected with a top cover (7), the inside of the top cover (7) is respectively and fixedly connected with a rubber plug (8) and a rubber plug (10), a reference electrode (5) is fixedly connected inside the rubber plug (8), a luggin capillary tube (1) is fixedly connected inside the rubber plug (10), the restraint belts (2) are respectively connected in the top cover (7) and positioned at the front side and the rear side of the rubber plug (10) in a penetrating way, a long groove (15) is arranged in the top cover (7) corresponding to the restraint belt (2), the inner side of the bottom of the electrolytic cell box body (6) is fixedly connected with a test reaction nozzle (4), the bottom of the electrolytic cell box body (6) is fixedly connected with a working electrode (3), the bottom of the electrolytic cell box body (6) is provided with a mounting groove (9) corresponding to the working electrode (3).

2. The device for in-situ measuring the sensitization degree of the stainless steel pipeline according to claim 1 is characterized in that: the rubber stopper (10) is positioned on one side of the rubber stopper (8).

3. The device for in-situ measuring the sensitization degree of the stainless steel pipeline according to claim 1 is characterized in that: and a first mounting hole (14) and a second mounting hole (13) are respectively formed in the top cover (7) at positions corresponding to the rubber plug (8) and the rubber plug (10).

4. The device for in-situ measuring the sensitization degree of the stainless steel pipeline according to claim 1 is characterized in that: the number of the restraint belts (2) is two, and the two restraint belts (2) are symmetrical with respect to the central axis of the top cover (7).

5. The device for in-situ measuring the sensitization degree of the stainless steel pipeline according to claim 1 is characterized in that: a reaction nozzle mounting opening (11) is formed in the position, corresponding to the test reaction nozzle (4), of the bottom of the electrolytic cell box body (6), and a through opening (12) is formed in the test reaction nozzle (4).

6. The device for in-situ measuring the sensitization degree of the stainless steel pipeline according to claim 1 is characterized in that: the number of the mounting grooves (9) is two, and the two groups of mounting grooves (9) are symmetrical about the central axis of the electrolytic cell box body (6).

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