阅读说明：本技术 一种用于乏燃料干法密封储存容器外盖的专用测量工具 (Special measuring tool for outer cover of spent fuel dry-method sealed storage container ) 是由 孟令佳 欧阳钦 王志兵 茆秋华 刘红雨 马幸龙 刘泰红 葛科党 郑海全 单光方 于 2020-06-04 设计创作，主要内容包括：本发明公开一种用于乏燃料干法密封储存容器外盖的专用测量工具,包括测量基体,具有顶壁、底壁、前侧壁、后侧壁、左侧壁以及右侧壁,测量基体的底壁上设置有一沿水平方向延伸的基准面；深度刻度尺,设置在测量基体的左侧壁上与/或右侧壁上且沿上下方向延伸；水准泡组件,包括水平气泡腔和透明封盖,水平气泡腔设置在测量基体的顶壁上且其内部填充有气泡液和浮在该气泡液上的圆形气泡,透明封盖遮蔽在水平气泡腔上且其上设置有一圆环形基准线,水准泡组件被配置成：当测量基体的基准面被置于一水平面上时,圆形气泡的外轮廓线与圆环形基准线大致相重合；把手,固定设置在测量基体的顶壁上且供用户的手部握持该专用测量工具。(The invention discloses a special measuring tool for an outer cover of a spent fuel dry-method sealed storage container, which comprises a measuring base body, a measuring tool and a measuring tool, wherein the measuring base body is provided with a top wall, a bottom wall, a front side wall, a rear side wall, a left side wall and a right side wall; the depth scale is arranged on the left side wall and/or the right side wall of the measuring base body and extends along the vertical direction; level bubble subassembly, including horizontal bubble chamber and transparent closing cap, the horizontal bubble chamber sets up on the roof of measuring the base member and its inside packing has the bubble liquid and floats the circular bubble on this bubble liquid, and transparent closing cap shields and is provided with a ring shape datum line on the horizontal bubble chamber and on it, and the level bubble subassembly is configured into: when the reference surface of the measuring base body is arranged on a horizontal plane, the outer contour line of the circular bubble is approximately coincident with the circular ring-shaped reference line; and the handle is fixedly arranged on the top wall of the measuring base body and is used for a user to hold the special measuring tool.)

1. A special measuring tool for an outer cover of a spent fuel dry-method sealing storage container is characterized by comprising:

the measuring device comprises a measuring base body (1) and a measuring device, wherein the measuring base body (1) is provided with a top wall, a bottom wall, a front side wall, a rear side wall, a left side wall and a right side wall, and a reference surface (11) extending along the horizontal direction is arranged on the bottom wall of the measuring base body (1);

the depth scale (2) is arranged on the left side wall and/or the right side wall of the measuring base body (1) and extends along the vertical direction;

level bubble subassembly (3), including horizontal bubble chamber and transparent closing cap, the horizontal bubble chamber set up on the roof of measuring base member (1) and its inside is filled with bubble liquid and floats the circular bubble on this bubble liquid, the transparent closing cap shelter from on the horizontal bubble chamber and be provided with a ring shape datum line on it, level bubble subassembly (3) be configured into: when the reference surface (11) of the measuring base body (1) is placed on a horizontal plane, the outer contour line of the circular bubble is approximately coincident with the circular ring-shaped reference line;

and the handle (4) is fixedly arranged on the top wall of the measuring base body (1) and is used for holding the special measuring tool by the hand of a user.

2. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the front side and the rear side of the handle (4) are provided with concave parts (41).

3. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the handle (4) has a through-hole that penetrates the handle (4) in the front-rear direction.

4. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the handle (4) is formed integrally with the measuring base body (1).

5. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the level bubble assembly (3) is arranged on the handle (4) and is positioned at the middle position of the top of the handle (4).

6. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the measuring base is characterized in that the depth graduated scale (2) is arranged on the left side wall and the right side wall of the measuring base body (1), and the depth graduated scale (2) extends upwards to the corresponding side wall of the handle (4).

7. The special measuring tool for the outer cover of the spent fuel dry sealing storage container according to claim 1, wherein: the measuring base body is characterized in that a plurality of scale grooves (21) which are arranged at equal intervals in the vertical direction are formed in the left side wall and/or the right side wall of the measuring base body (1), a scale strip (22) is formed at a protruding part between every two adjacent scale grooves (21), and the scale strips (22) jointly form the depth scale (2).

Technical Field

The invention relates to the technical field of auxiliary tools of spent fuel storage equipment, in particular to a special measuring tool for an outer cover of a spent fuel dry-method sealed storage container.

Background

In the initial construction stage of nuclear power, a storage pool for storing spent fuel is constructed, due to the limitation of the storage capacity of the spent fuel pool, along with the increase of the operation age of a unit, the generated spent fuel assemblies are increased year by year, and the conventional storage cannot meet the rapid development of the nuclear power industry in China. With the gradual introduction, digestion and absorption and implementation of the dry storage process of the spent fuel in the domestic nuclear power industry, a series of operations such as drainage, vacuum drying, helium backfilling, inner cover welding, outer cover welding and the like are required to be carried out on a sealed storage container (DSC) which is just loaded with the spent fuel in the implementation process of the dry storage process. Since the outer lid is welded, it is necessary to check whether the outer lid is fitted to the cylinder of the sealed storage container to see whether it meets the welding requirements. The outer cover adaptation needs to check whether the gap between the edge of the outer cover and the inner wall of the cylinder of the sealed storage container and the distance between the top plane of the outer cover and the top of the cylinder of the sealed storage container meet the requirements or not. Traditional depth gauge, slide caliper, spirit level etc. because of there being clearance and oblique angle and unable accurate use between the enclosing cover and the barrel of sealed storage container, measuring error is great, and needs a plurality of measuring tool collaborative work, and is not very convenient in the use. Therefore, in order to conveniently measure the distance between the top plane of the outer cover and the top of the barrel of the sealed storage container and measure the levelness of the outer cover when the outer cover is assembled into the barrel, a special measuring tool for the depth and the levelness of the outer cover of the spent fuel dry-method sealed storage container needs to be designed.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a special measuring tool for measuring the depth of the outer cover between the upper surface of the outer cover and the upper edge of the cylinder when the outer cover of the sealed storage container for spent fuel is assembled into the cylinder, and measuring the levelness of the outer cover during assembly, wherein the measuring is faster and more convenient.

In order to achieve the purpose of the invention, the invention adopts the following technical scheme:

a special measuring tool for a spent fuel dry sealed storage container outer cover, comprising:

the measuring device comprises a measuring base body, a measuring base body and a measuring device, wherein the measuring base body is provided with a top wall, a bottom wall, a front side wall, a rear side wall, a left side wall and a right side wall, and a reference surface extending along the horizontal direction is arranged on the bottom wall of the measuring base body;

the depth scale is arranged on the left side wall and/or the right side wall of the measuring base body and extends along the vertical direction;

a level vial assembly comprising a horizontal bubble chamber and a transparent cover, the horizontal bubble chamber being disposed on the top wall of the measurement base and filled with a bubble liquid and a circular bubble floating on the bubble liquid, the transparent cover being shielded by the horizontal bubble chamber and having a circular reference line disposed thereon, the level vial assembly being configured to:

when the reference surface of the measuring basal body is arranged on a horizontal plane, the outer contour line of the circular bubble is approximately coincident with the circular ring-shaped reference line;

and the handle is fixedly arranged on the top wall of the measuring base body and is used for a user to hold the special measuring tool.

In the above technical solution, preferably, the front and rear sides of the handle are provided with recessed portions.

In the above aspect, preferably, the handle has a through portion that penetrates the handle in the front-rear direction.

In the above-described aspect, preferably, the handle is formed integrally with the measurement base.

In the above technical solution, preferably, the vial assembly is disposed on the handle and located at a middle position of a top of the handle.

In the above technical solution, preferably, the depth scales are disposed on both the left side wall and the right side wall of the measuring base, and the depth scales extend upward to the corresponding side walls of the handle.

In the above technical solution, preferably, a plurality of scale grooves are arranged on the left side wall and/or the right side wall of the measuring base at equal intervals in the up-down direction, a protruding portion between two adjacent scale grooves forms a scale bar, and the plurality of scale bars together form the depth scale.

Compared with the prior art, the invention has the following beneficial effects:

1. through the measuring base body and the level bubble assembly, the bottom wall of the measuring base body is provided with a reference surface extending along the horizontal direction, when the measuring base body is arranged on the upper surface of the outer cover, the levelness of the outer cover in the process of being assembled into the cylinder body can be judged by observing the matching condition of the outer contour of the circular bubble and the annular reference line, and the measurement is quick and convenient;

2. by arranging the depth graduated scale on the left side wall and/or the right side wall of the measuring base body, when the outer cover is horizontally installed in the cylinder body, the depth distance between the upper surface of the outer cover and the outer edge of the cylinder body can be read through the depth graduated scale, and the measurement is quicker and more convenient;

3. through setting up the handle, make things convenient for this degree of depth measurement specialized tool of operating personnel to carry out the measurement of enclosing cover degree of depth and levelness, get and take the convenience, labour saving and time saving can greatly practice thrift measuring time, reduces the time that operating personnel contacted spent fuel storage container, reduces operating personnel and receives radiation time and dose.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front perspective schematic view of the present invention;

fig. 3 is a schematic view showing an operating state in which the present invention is applied to measure a depth distance between an upper surface of an outer cap and an outer edge of a vessel body when the outer cap of a sealed storage container for spent fuel is assembled into the vessel body, and a levelness of the outer cap when the outer cap is assembled;

wherein: 100. a dedicated measuring tool; 200. a sealed spent fuel storage container; 201. an outer cover; 202. a barrel;

1. measuring the substrate; 11. a reference plane;

2. a depth scale; 21. a scale groove; 22. a scale bar;

3. a vial assembly;

4. a handle; 41. a recessed portion.

Detailed Description

For the purpose of illustrating the technical content, the constructional features, the achieved objects and the effects of the invention in detail, reference will be made to the following detailed description of the embodiments in conjunction with the accompanying drawings. In this embodiment, "up", "down", "left", "right", "front", and "rear" correspond to the respective positional relationships shown in fig. 1, respectively.

As shown in fig. 1-2, the special measuring tool 100 includes a measuring base 1, a horizontal scale 2, a horizontal bubble assembly 3, and a handle 4.

The measuring base body 1 has a top wall, a bottom wall, a front side wall, a rear side wall, a left side wall and a right side wall, and a reference surface 11 extending in the horizontal direction is provided on the bottom wall of the measuring base body 1. The measuring base body 1 is made of aluminum alloy materials on the whole, so that light-weighted use of the special measuring tool by operators is facilitated.

The depth scale 2 is disposed on the left and right side walls of the measuring base 1 and extends in the up-down direction. Specifically, a plurality of scale grooves 21 which are arranged at equal intervals in the vertical direction are arranged on the left side wall and the right side wall of the measuring base body 1, a scale bar 22 is formed at a protruding part between two adjacent scale grooves 21, and the plurality of scale bars 22 jointly form the depth scale 2. The scale groove 21 can be formed by machining with a machine tool, and the manufacturing process is simple. The distance between two adjacent graduated bars 22 defines a unit depth dimension, for example, each two adjacent graduated bars 22 form a grid, the distance between every two adjacent graduated bars 22 is a unit depth dimension, the unit depth dimension can be designed to be a fixed depth unit, for example, 2 mm, 4 mm, or 6 mm, and the more the number of the graduated bars 22 is, the denser the overall precision of the graduated scale 2 is, and the higher the measurement precision is. The graduated scale 2 is designed on the left side wall and the right side wall of the measuring base body 1, so that depth measurement can be realized on the left side and the right side of the special measuring tool. Of course, in other embodiments, a scale may be provided on one of the side walls.

The top wall of the measuring base body 1 is fixedly provided with a handle 4, and the handle 4 can be held by the hand of a user. The vial assembly 3 is disposed on the handle 4 at a top intermediate position of the handle 4. Specifically, the vial assembly 3 includes a horizontal bubble chamber and a transparent cover. The horizontal bubble chamber sets up on the roof of measuring base member 1 and its inside packing has the bubble liquid and floats the circular bubble on this bubble liquid, and transparent closing cap shields on the horizontal bubble chamber and is provided with a ring shape datum line on it, and air level subassembly 3 is configured into: when the reference surface 11 of the measuring base 1 is placed on a horizontal plane, the outer contour line of the circular bubble substantially coincides with the circular reference line. Of course, the level bubble assembly 3 may not be disposed on the handle 4, but may also be disposed on the top wall of the measuring base 1, and the level bubble assembly 3 is disposed on the handle 4 so as to make it easier for an operator to observe whether the object to be measured is in a horizontal state when the operator holds the special measuring tool to measure the levelness of the object to be measured.

The front and rear sides of the handle 4 are provided with recessed portions 41, which facilitates the hand of the operator to grip the handle 4 through the recessed portions 41. Of course, a through part penetrating through the handle 4 in the front-back direction can be designed on the handle 4, so that a user can conveniently carry the special measuring tool, and the operation is more convenient. The handle 4 may be formed integrally with the measurement base 1, and is made of a lightweight material such as an aluminum alloy. Of course, the handle 4 may be made of a plastic material or a wooden material. The depth scale 2 extends upwards to the corresponding side wall of the handle 4, and is suitable for measuring objects to be measured at different depths.

The working principle of the invention is as follows: as shown in fig. 3, before the dedicated measuring tool of the present application is used to measure the depth of the outer cover, the spent fuel sealed storage container 200 has completed operations such as drainage, vacuum drying, etc., and the surrounding radiation level is high, and an operator holds the dedicated measuring tool by hand and places the dedicated measuring tool on the outer cover to make the reference surface 11 of the measuring base 1 contact with the upper surface of the outer cover 201, and can judge the levelness of the outer cover 201 when the outer cover 201 is assembled into the cylinder 202 by observing the fit condition of the outline of the circular bubble and the circular reference line, thereby judging whether the outer cover 201 completely falls into the cylinder 202, and the measurement is rapid and convenient. Based on the situation that the outer cover is horizontal, an operator can tightly attach the left side wall/right side wall of the measuring base body 1 to the inner side edge of the cylinder 202, and the depth dimension between the upper surface of the outer cover 201 and the outer edge of the cylinder 202 can be obtained by reading the number of the scale bars 22 of the scale 2 on the measuring base body 1. The measurement is more convenient and fast, can greatly save measuring time, reduces the time that operating personnel contacted spent fuel storage container, reduces operating personnel and receives radiation time and dose.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.