Measuring assembly

Abstract

The utility model discloses a measuring assembly which comprises a measuring piece and a scale piece, and the radius of the outer wall of the measuring piece is smaller than the radius of the inner wall of a finger sleeve pipe installation channel so that the measuring piece can be coaxially inserted into the finger sleeve pipe installation channel and measure the length of the finger sleeve pipe installation channel. The measuring piece comprises an end head part and a measuring tube which are coaxially connected; the end part is provided with a pointed end and a mounting end, the mounting end is connected with the first end of the measuring tube, and a certain part of the outer wall of the measuring tube is provided with tube scale marks; the zero scale of the tube scale mark is positioned at the vertex of the tip end; the distance between the tube scale mark and the vertex of the pointed end is larger than the length of the finger sleeve tube installation channel. And the scale piece is used for measuring the distance from the tube scale mark to one end, far away from the tip end, of the fingerstall tube mounting channel. According to the technical scheme, the length of the installation channel of the finger sleeve can be measured through cooperation of the measuring piece and the scale piece, so that the length of the finger sleeve to be installed is obtained, and then the finger sleeve is customized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the measurement technical field, especially a kind of measuring assembly. BACKGROUND

[0002] Nuclear power plant core measuring system is the important component of nuclear power plant instrumentation and control system, it is composed of water level measurement, temperature measurement and neutron flux measurement three systems. Among them, in addition to cabinet, drive mechanism and selector, neutron flux measurement system also includes finger sleeve installation passage, in actual working process, the length of finger sleeve installation passage needs to be measured to determine the length of finger sleeve, since finger sleeve installation passage structure is complex, currently there is no tool to measure finger sleeve installation passage;

[0003] Summarized above, how to measure the length of finger sleeve installation passage, is the problem that the present technical personnel in the field urgently solves. INVENTION CONTENTS

[0004] Therefore, the utility model provides a kind of measuring assembly, can measure finger sleeve installation passage, and then utilize the length of measurement, customize finger sleeve.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of measuring assembly, comprising: measuring piece and scale piece;

[0007] The outer wall radius of the measuring piece is less than the inner wall radius of finger sleeve installation passage, so that the measuring piece can be coaxially inserted into the finger sleeve installation passage, and the length of the finger sleeve installation passage is measured;

[0008] The measuring piece includes: coaxially connected end head and measuring tube;

[0009] The end head has sharp end and mounting end, the mounting end is connected with the first end of the measuring tube, and the outer wall of the measuring tube is provided with tube scale mark at a certain part;Zero scale of the tube scale mark is located at the vertex of the sharp end;The distance between the tube scale mark and the vertex of the sharp end is greater than the length of finger sleeve installation passage.

[0010] Scale piece, the scale piece is provided with scale along its length direction, and the scale piece is used to measure the distance between the tube scale mark and the end of the finger sleeve installation passage away from the sharp end.

[0011] Preferably, the mounting end is fixedly nested in the first end of the measuring tube, and the tube scale mark is close to the second end of the measuring tube.

[0012] Preferably, the mounting end is fixedly embedded in the first end of the measuring tube, and the tube scale mark is arranged close to the second end of the measuring tube.

[0013] Preferably, the mounting end is a circular boss, and the radius of the circular boss matches the inner wall radius of the measuring tube to realize embedding of the mounting end in the first end of the measuring tube.

[0014] Preferably, the connection between the mounting end and the first end of the measuring tube is a detachable connection.

[0015] Preferably, the material of the measuring member is 304L low-carbon stainless steel.

[0016] Preferably, the material of the measuring member is carbon fiber material.

[0017] Preferably, the material of the measuring member is glass fiber material.

[0018] Preferably, the scale values are equidistantly arranged between the zero scale of the pointed end and the tube scale mark.

[0019] Preferably, the part of the outer peripheral wall of the measuring tube, on which the tube scale mark is arranged, is an annular recess structure.

[0020] Preferably, the scale value indicated by the tube scale mark is 13785 mm.

[0021] As can be seen from the above technical solution, the measuring assembly provided by the utility model can measure the length of the finger sleeve installation channel through cooperation of the measuring member and the scale member, so as to obtain the length of the finger sleeve to be installed, and then customize the finger sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 The structural schematic diagram of the measuring member provided by the utility model embodiment is shown in the figure.

[0024] Figure 2 The partial enlarged view of Figure 1 The partial enlarged view of

[0025] Figure 3 The partial structural diagram of the neutron flux measuring system.

[0026] The meanings of various reference signs in the figure are as follows:

[0027] 10 is a measuring piece, 11 is an end head, 111 is a pointed end, 112 is a mounting end, 12 is a measuring tube, 121 is a tube scale mark;

[0028] 20 is a finger sleeve installation channel, 21 is a bend; 30 is a sealing assembly; 40 is a finger sleeve; 50 is a manual valve; 60 is a through piece; 70 is a reactor lower head; 80 is an outer leakage probe; 90 is an inner leakage probe; 100 is a spherical check valve; 110 is an automatic valve. DETAILED DESCRIPTION

[0029] It should be noted that, as shown in Figure 3 the neutron flux measurement system includes, in addition to the cabinet, the driving mechanism and the selector: the sealing assembly 30, the finger sleeve installation channel 20, the finger sleeve 40, the manual valve 50, the through piece 60, the reactor lower head 70, the outer leakage probe 80, the inner leakage probe 90, the spherical check valve 100 and the automatic valve 110.

[0030] The technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] The measuring assembly provided by the embodiments of the present application, as shown in Figures 1-3 includes: a measuring piece 10 and a scale piece.

[0032] The outer wall radius of the measuring piece 10 is smaller than the inner wall radius of the finger sleeve installation channel 20, so that the measuring piece 10 can be coaxially inserted into the finger sleeve installation channel 20 and the length of the finger sleeve installation channel 20 can be measured;

[0033] The measuring piece 10 includes: a coaxially connected end head 11 and a measuring tube 12.

[0034] The end head 11 has a pointed end 111 and a mounting end 112, the mounting end 112 is connected with the first end of the measuring tube 12, and a tube scale mark 121 is arranged on a part of the outer wall of the measuring tube 12; the zero scale of the tube scale mark 121 is located at the vertex of the pointed end 111; the distance between the tube scale mark 121 and the vertex of the pointed end 111 is greater than the length of the finger sleeve installation channel 20.

[0035] The scale piece is provided with scales at equal distances along the length direction of the scale piece, and the scale piece is used for measuring the distance from the tube scale mark 121 to the end of the finger sleeve installation channel 20 away from the pointed end.

[0036] In the above technical solution, if the length of the finger sleeve installation channel 20 needs to be measured, the measuring member 10 is inserted into the finger sleeve installation channel 20 from the first end of the finger sleeve installation channel 20, the end head part 11 of the measuring member 10 is axially slid along the length direction of the sleeve installation channel 20 until the pointed end 111 of the end head part 11 of the measuring member 10 extends out of the second end of the finger sleeve installation channel 20, the relative positions of the measuring member 10 and the sleeve installation channel 20 are fixed, the distance from the pipe scale mark 121 to the first end of the finger sleeve installation channel 20 is measured by using the scale member, and then the length of the finger sleeve installation channel 20 is obtained by subtracting the distance measured by the scale mark 121 from the numerical value of the scale mark 121. According to the length of the finger sleeve installation channel 20, the length of the finger sleeve 40 is determined, and then the finger sleeve 40 is customized.

[0037] In the above technical solution, the length of the finger sleeve installation channel 20 can be measured by the cooperation of the measuring member 10 and the scale member, so as to obtain the length of the finger sleeve 40 to be installed, and then the finger sleeve 40 is customized.

[0038] In an optional embodiment, as shown in Figure 2 The installation end 112 is fixedly nested in the first end of the measuring pipe 12 to realize the connection between the installation end 112 and the first end of the measuring pipe 12, and the pipe scale mark 121 is arranged close to the second end of the measuring pipe 12.

[0039] The above technical solution is optimized, as shown in Figure 2 The installation end 112 is a circular boss, and the radius of the circular boss matches the inner wall radius of the measuring pipe 12 to realize that the installation end is nested in the first end of the measuring pipe 12.

[0040] In an optional embodiment, since the end head part 11 will be worn out in the daily use process, the end head part 11 will be damaged, and thus the connection between the installation end 112 and the first end of the measuring pipe 12 is detachable connection. In this way, the end head part 11 is convenient to maintain and replace. In addition, the detachable connection can be clamping or magnetic connection. In addition, the installation end 112 and the first end of the measuring pipe 12 can be welded.

[0041] In an optional embodiment, since part of the finger sleeve installation channel 20 has a bending part 21, the material of the measuring member 10 is 304L low-carbon stainless steel. Since the measuring member 10 made of 304L low-carbon stainless steel has certain flexibility and rigidity, it is convenient to pass through the bending part 21 of the finger sleeve installation channel 20. In another optional embodiment, the material of the measuring member 10 is carbon fiber material. In yet another optional embodiment, the material of the measuring member 10 is glass fiber material. In addition, the measuring member 10 can also be an integrally formed member.

[0042] In order to improve the efficiency of the measurement, the scale values are equidistantly arranged between the zero scale of the pointed end 111 and the tube scale mark 121.

[0043] In order to make the tube scale mark 121 not affected by the wear of the outer surface of the measuring tube 12 in the transportation measurement, a part of the outer peripheral wall of the measuring tube 12, where the tube scale mark 121 is arranged, is in a ring-shaped recess structure.

[0044] In an optional embodiment, the scale value marked by the tube scale mark 121 is 13785mm, and preferably, the total length of the measuring member 10 is 14500mm.

[0045] In an optional embodiment, the scale member is a ruler or a tape measure.

[0046] The technical features mentioned above, the technical features mentioned below and the technical features shown in the drawings alone can be combined with each other arbitrarily, as long as the combined technical features are not contradictory to each other. All the feasible feature combinations are the technical contents explicitly described herein. Any one of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0047] The present application will be further described below in combination with specific embodiments:

[0048] In an embodiment, during the refueling, the finger sleeve 40 is pulled out from a given core height to the bottom of the core to avoid interfering with the hoisting of the fuel assembly. The deformation recess of the finger sleeve 40 will affect the normal measurement of the core neutron flux, and the finger sleeve 40 is also a primary circuit pressure boundary, which is self-evident in importance. The finger sleeve 40 is inside the guide tube (i.e., the finger sleeve installation channel 20), and cannot perform normal measurement work, so a special tool is needed to measure the length of the finger sleeve 40, such as the tool shown in FIG. 8. Figure 3 As shown in FIG. 8, when measuring the finger sleeve installation channel 20 in the neutron flux measurement system, first, the sealing assembly 30 is opened, the measuring member 10 is inserted into the finger sleeve installation channel 20 from the first end of the finger sleeve installation channel 20, the end head 11 of the measuring member 10 is axially slid along the length direction of the sleeve installation channel 20, until the pointed end 111 of the end head 11 of the measuring member 10 extends out of the second end of the finger sleeve installation channel 20, the relative positions of the measuring member 10 and the sleeve installation channel 20 are fixed, and finally the length of the sleeve installation channel 20 is measured by the cooperation of the scale member and the measuring member 10. It should be noted that, in the process of axial sliding, the measuring member 10 can pass through the bending part 21 of the sleeve installation channel 20 due to the flexibility and hardness of the measuring member 10. It should be further noted that the end of the sleeve installation channel 20 close to the sealing assembly 30 is the first end, and the end of the sleeve installation channel 20 away from the sealing assembly 30 is the second end.

[0049] In another embodiment, the number of the finger sleeve installation channels 20 in the neutron flux measuring system is at least fifty, so that the outer surface of the measuring element 10 is worn during the measuring process, therefore, only one position of the outer wall of the measuring tube 12 is provided with the tube scale mark 121, and the tube scale mark 121 is a ring-shaped recess structure; in addition, the distance between the tube scale mark 121 and the vertex of the pointed end 111 is greater than the length of the finger sleeve installation channel 20, in addition to facilitating measurement, it is also to avoid the relative friction between the tube scale mark 121 and the finger sleeve installation channel 20 during use, which causes the tube scale mark 121 to be worn.

[0050] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0051] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A measuring component, characterized in that, include: Measuring element (10) and graduation element; The outer radius of the measuring element (10) is smaller than the inner radius of the finger sleeve installation channel (20) so that the measuring element (10) can be coaxially inserted into the finger sleeve installation channel (20) and the length of the finger sleeve installation channel (20) can be measured. The measuring element (10) includes: a coaxially connected end head (11) and a measuring tube (12); The end head (11) has a pointed end (111) and a mounting end (112). The mounting end (112) is connected to the first end of the measuring tube (12). A tube scale mark (121) is provided at a certain part of the outer wall of the measuring tube (12). The zero mark of the tube scale mark (121) is located at the apex of the pointed end (111). The distance between the tube scale mark (121) and the apex of the pointed end (111) is greater than the length of the finger sleeve mounting channel (20). The scale element has graduations at equal intervals along its length. The scale element is used to measure the distance from the tube graduation mark (121) to the end of the finger sleeve installation channel (20) away from the pointed end.

2. The measuring component according to claim 1, characterized in that, The mounting end (112) is fixedly nested inside the first end of the measuring tube (12), and the tube scale mark (121) is set near the second end of the measuring tube (12).

3. The measuring component according to claim 2, characterized in that, The mounting end (112) is a circular boss, the radius of which matches the inner wall radius of the measuring tube (12) so that the mounting end is nested inside the first end of the measuring tube (12).

4. The measuring component according to claim 1, characterized in that, The connection between the mounting end (112) and the first end of the measuring tube (12) is a detachable connection.

5. The measuring component according to claim 2, characterized in that, The measuring component (10) is made of 304L low-carbon stainless steel.

6. The measuring component according to claim 1, characterized in that, The measuring component (10) is made of carbon fiber.

7. The measuring component according to claim 1, characterized in that, The measuring element (10) is made of glass fiber.

8. The measuring component according to claim 1, characterized in that, The zero mark of the pointed end (111) and the tube scale mark (121) are provided with scale values ​​at equal distances.

9. The measuring component according to claim 1, characterized in that, The outer peripheral wall of the measuring tube (12) has a ring-shaped recessed structure at a certain part where the tube scale mark (121) is provided.

10. The measuring component according to claim 1, characterized in that, The scale value marked by the tube scale mark (121) is 13785mm.

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