Instrumentation equipment mounting device and instrumentation equipment mounting method

Abstract

To firmly mount instrumentation equipment to a cylindrical member.SOLUTION: An instrument mounting device for mounting an instrument 10 on a cylindrical member 100 includes: a connecting member 1 having first contact portions 1A capable of contacting the outer circumferential surface of the cylindrical member 100 and to which the instrument 10 is fixedly provided; a holding member 2 having second contact portions 2A provided to face the connecting member 1 and capable of coming into contact with the outer peripheral surface of the cylindrical member 100; and bolts 3 that are screwed into the connecting member 1 and the holding member 2 to bring the mutual contact portions 1A and 2A closer together.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an instrumentation device mounting device and an instrumentation device mounting method. [Background technology]

[0002] For example, Patent Document 1 discloses a mounting bracket for attaching instrumentation equipment to a panel. The mounting bracket includes a bracket body having engagement grooves at both ends that engage with the edges of elongated holes provided in the side of the instrumentation equipment having a decorative frame and a nut in the middle, and a screw that threads onto the nut and penetrates the bracket body. With this mounting bracket, the decorative frame is placed on the front side of the panel, the instrumentation equipment is inserted into the through-hole in the panel so that it protrudes to the back side of the panel, and the engagement groove of the bracket body is inserted into the elongated hole. The screw is then tightened to press the tip of the screw against the back side of the panel, and the screw is tensioned between the panel and the bracket body, thereby sandwiching the panel between the decorative frame and the screw, and the instrumentation equipment is attached to the panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 63-62765 Summary of the Invention [Problem to be solved by the invention]

[0004] Assume that the instrumentation device is to be attached to a cylindrical member such as a pipe. In this case, a typical method would be to place a U-shaped band around the pipe and fasten nuts to the bolts on both ends of the U-shaped band to attach the instrumentation device to the pipe.

[0005] However, U-shaped bands do not provide sufficient fixation to the pipe, and if vibrations are transmitted to the measuring equipment through the pipe during an earthquake or other impact, there is a risk that the instrumentation will rotate around the pipe or shift in position along the pipe's axis.

[0006] The present disclosure is intended to solve the above-mentioned problems, and aims to provide an instrumentation device mounting device and an instrumentation device mounting method that can firmly mount instrumentation devices to columnar members and achieve a long service life. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, an instrumentation device mounting device according to one embodiment of the present disclosure is an instrumentation device mounting device for mounting an instrumentation device to a columnar member, and includes: a connecting member to which the instrumentation device can be fixed and having a first contact portion capable of contacting the outer peripheral surface of the columnar member; a retaining member facing the connecting member and having a second contact portion capable of contacting the outer peripheral surface of the columnar member; and a bolt that is screwed into the connecting member and the retaining member to bring the contact portions closer together.

[0008] In order to achieve the above-mentioned object, an instrumentation device mounting method according to one aspect of the present disclosure includes a connecting member to which an instrumentation device can be fixed and which has a first contact portion capable of contacting the outer peripheral surface of a columnar member, a retaining member which is disposed opposite the connecting member and has a second contact portion capable of contacting the outer peripheral surface of the columnar member, and a bolt which is screwed into the connecting member and the retaining member to bring the contact portions closer to each other, and which uses an instrumentation device mounting device to mount the instrumentation device to the columnar member, the method including the steps of: fixing the instrumentation device to the connecting member; determining the position of the instrumentation device relative to the columnar member and arranging the connecting member and the retaining member on both sides of the columnar member; and tightening the bolt to bring the connecting member and the retaining member closer together, with the columnar member in between. [Effects of the Invention]

[0009] The present disclosure allows for the secure attachment of instrumentation to a columnar member. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a plan view of the instrumentation device mounting device. [Figure 2]FIG. 2 is a side view of the instrumentation device mounting device. [Figure 3] FIG. 3 is a plan view of another example of the instrumentation device mounting device. [Figure 4] FIG. 4 is a flowchart of the instrumentation device installation method. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present disclosure is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially identical.

[0012] The instrumentation device mounting device of the embodiment is for mounting an instrumentation device 10 to a cylindrical member 100 installed in a plant, such as a nuclear power plant. The cylindrical member 100 is primarily used as a stanchion for mounting the instrumentation device 10 within the plant. In the embodiment, the cylindrical member 100 is, for example, a cylindrical 2-inch pipe. The instrumentation device 10 may be a control device or a measuring device. The instrumentation device mounting device of the embodiment mounts the instrumentation device 10 to the cylindrical member 100 and securely mounts the instrumentation device 10 without rotating along the circumferential direction of the cylindrical member 100 or shifting in position along the axial direction of the cylindrical member 100 (the direction in which the axis C extends) even if shocks or vibrations due to an earthquake or some other external force are applied to the cylindrical member 100 and the instrumentation device 10. In the embodiment, the cylindrical member 100 is described as the target for mounting the measuring device 10, but the mounting object may include other cylindrical members. For example, the object to which the measuring device 10 is attached may be a hollow object such as a square tube with a corner on the outer periphery, or a solid rod-like object other than a hollow shape. These are collectively referred to as a "columnar member" in the present disclosure, and the object to which the measuring device 10 is attached may also be referred to as a "columnar member."

[0013] As shown in FIGS. 1 to 3, the instrumentation device mounting device of the embodiment includes a connection member 1, a holding member 2, and a bolt 3.

[0014] The connecting member 1 is provided so that the instrumentation device 10 can be fixed thereto. The instrumentation device 10 is fixed to the connecting member 1 by fastening members 1B such as screws or bolts. The instrumentation device 10 is firmly fixed to the connecting member 1 by a plurality of fastening members 1B. The connecting member 1 has a first contact portion 1A that can come into contact with the outer circumferential surface of the cylindrical member 100. As shown in FIG. 1, the first contact portion 1A is formed as a linear protruding corner portion so as to be able to come into contact along the axial direction of the cylindrical member 100. Alternatively, as shown in FIG. 3, the first contact portion 1A may be formed as a linear contact surface that is chamfered at the protruding corner portion and can be brought into contact along the axial direction of the cylindrical member 100. In other words, when the first contact portion 1A is installed on the cylindrical member 100, it is arranged parallel to the axis C of the cylindrical member 100. The first contact portion 1A is provided at multiple locations (two locations in this embodiment) so as to be able to come into contact with multiple locations on the outer circumferential surface of the cylindrical member 100. That is, the multiple first contact portions 1A are arranged in parallel as linear projected corner portions, each of which contacts the outer peripheral surface of the cylindrical member 100. In this embodiment, the first contact portions 1A are formed linearly mainly along the axial direction and continuously contact the outer peripheral surface of the cylindrical member 100 along the axial direction. However, the first contact portions 1A may not be linear but may be discontinuous. That is, the first contact portions 1A do not have to be linear over the entire axial length of the connecting member 1. Furthermore, the first contact portions 1A do not have to contact the cylindrical member over the entire axial length of the connecting member 1. For example, the first contact portions 1A may be formed so that a portion thereof deviates from the linear shape and makes a detour to avoid the attachment position of the fastening member 1B. The connecting member 1 includes the first contact portions 1A and is formed as a single unit, for example, from a metal material. Furthermore, the connecting member 1 itself and the first contact portions 1A may be formed as separate bodies, for example, from a metal material.

[0015] The holding member 2 sandwiches the cylindrical member 100 between itself and the connecting member 1. The holding member 2 has a second contact portion 2A that can contact the outer circumferential surface of the cylindrical member 100. As shown in FIG. 1, the second contact portion 2A is formed as a linear protruding corner portion so as to be in contact with the cylindrical member 100 along the axial direction. Alternatively, as shown in FIG. 3, the second contact portion 2A may be formed as a linear contact surface that is in contact with the cylindrical member 100 along the axial direction by forming a chamfer at the protruding corner portion. In other words, when the second contact portion 2A is installed on the cylindrical member 100, it is arranged parallel to the axis C of the cylindrical member 100. The second contact portion 2A is provided at multiple locations (two locations in this embodiment) so as to be in contact with multiple locations on the outer circumferential surface of the cylindrical member 100. In other words, the multiple second contact portions 2A are provided in parallel as linear protruding corner portions, and each contacts the outer circumferential surface of the cylindrical member 100. The holding member 2 includes the second contact portion 2A and is formed as a single unit from, for example, a metal material. Furthermore, the holding member 2 itself and the second contact portion 2A may be formed as separate bodies, for example, from a metal material.

[0016] Although not shown in the drawings, the first contact portion and the second contact portion may be formed as arc-shaped corner portions so as to be in contact with each other along the circumferential direction of the cylindrical member 100 (the direction around the axis C). Furthermore, the first contact portion and the second contact portion may be formed as contact surfaces with chamfers formed on the arc-shaped corner portions so as to be in contact with each other along the circumferential direction of the cylindrical member 100 (the direction around the axis C). In the embodiment, the cylindrical member 100 is a cylindrical pipe, and the first contact portion and the second contact portion extending along the circumferential direction of the cylindrical member 100 are formed in an arc-like shape. Alternatively, for example, if the cylindrical member 100 is shaped like a prism, the first contact portion and the second contact portion may be shaped to be in a circumferential direction of the prism. Furthermore, the first contact portion and the second contact portion extending along the circumferential direction of the cylindrical member 100 are provided at multiple locations in the direction of extension of the axis C of the cylindrical member 100 when the cylindrical member 100 is installed on the cylindrical member 100.

[0017] The bolt 3 is screwed into the connecting member 1 and the holding member 2 to bring the first contact portion 1A and the second contact portion 2A closer to each other. In this embodiment, the bolt 3 is screwed from the connecting member 1 into the holding member 2, and the head portion of the bolt 3 is rotated with a tool on the connecting member 1 side to bring the connecting member 1 and the holding member 2 closer to each other, bringing the first contact portion 1A and the second contact portion 2A closer to each other and into contact with the outer circumferential surface of the cylindrical member 100. The bolt 3 includes a washer (such as a plain washer or a spring washer) 3A, and is configured to prevent the bolt 3 itself from loosening.

[0018] In a method for mounting an instrumentation device using such an instrumentation device mounting device, the instrumentation device 10 is mounted on a cylindrical member 100 as shown in Figure 4. First, the instrumentation device 10 is fixed to the connecting member 1. Next, the mounting position of the instrumentation device 10 on the cylindrical member 100 is determined, and the connecting member 1 and the holding member 2 are positioned facing each other so as to sandwich the cylindrical member 100 on either side. At this time, the connecting member 1 and the holding member 2 may be temporarily connected by a bolt 3. Next, the bolt 3 is tightened to bring the connecting member 1 and the holding member 2 close together with the cylindrical member 100 in between.

[0019] As a result, the first contact portion 1A of the connecting member 1 contacts the outer peripheral surface of the cylindrical member 100, and the second contact portion 2A of the holding member 2 also contacts the outer peripheral surface of the cylindrical member 100, sandwiching the cylindrical member 100 between the first contact portion 1A and the second contact portion 2A. Furthermore, by tightening the bolt 3, the first contact portion 1A and the second contact portion 2A bite into the outer peripheral surface of the cylindrical member 100, and the instrumentation device 10 is firmly attached to the cylindrical member 100 via the connecting member 1 and the holding member 2. As described above, the first contact portion 1A and the second contact portion 2A are formed as projected corner portions, and therefore they easily bite into the outer peripheral surface of the cylindrical member 100. Furthermore, if the first contact portion 1A and the second contact portion 2A are formed as contact surfaces with chamfers formed on the projected corner portions, they will bite into the outer peripheral surface of the cylindrical member 100 while making surface contact with it.

[0020] Thus, the instrumentation equipment mounting device of the embodiment includes a connecting member 1 that is provided so that the instrumentation equipment 10 can be fixed and has a first contact portion 1A that can contact the outer peripheral surface of the cylindrical member 100, a retaining member 2 that is provided opposite the connecting member 1 and has a second contact portion 2A that can contact the outer peripheral surface of the cylindrical member 100, and a bolt 3 that is screwed into the connecting member 1 and the retaining member 2 to bring the mutual contact portions 1A, 2A closer together.

[0021] Therefore, according to the instrumentation device mounting device of the embodiment, the cylindrical member 100 is sandwiched between the first contact portion 1A and the second contact portion 2A, and the first contact portion 1A and the second contact portion 2A are engaged with the outer circumferential surface of the cylindrical member 100 by tightening the bolts 3, thereby firmly attaching the instrumentation device 10 to the cylindrical member 100. As a result, the instrumentation device mounting device of the embodiment can maintain high rigidity even against high accelerations such as earthquakes or impacts. Note that the instrumentation device mounting device of the embodiment can ensure the required earthquake resistance without changing the structure of the instrumentation device 10 by enlarging the first contact portion 1A and the second contact portion 2A along the axis C, increasing the number of bolts 3 as needed, and designing it according to the weight and center of gravity of the instrumentation device 10.

[0022] In the instrumentation device mounting device of the embodiment, as shown in FIGS. 1 and 3, the first contact portion 1A and the second contact portion 2A are arranged symmetrically with the cylindrical member 100 therebetween during mounting. Specifically, the first contact portion 1A and the second contact portion 2A are arranged symmetrically with respect to the axis C of the cylindrical member 100. The symmetrical positions with respect to the axis C include some error. Therefore, with the instrumentation device mounting device of the embodiment, the cylindrical member 100 can be securely sandwiched between the first contact portion 1A and the second contact portion 2A, and the first contact portion 1A and the second contact portion 2A can be fitted into the outer peripheral surface of the cylindrical member 100. As a result, with the instrumentation device mounting device of the embodiment, the instrumentation device 10 can be firmly mounted to the cylindrical member 100.

[0023] In the instrumentation device mounting device of the embodiment, as shown in FIG. 3 , the first contact portion 1A and the second contact portion 2A have chamfered contact surfaces at the portions that contact the cylindrical member 100. Therefore, the instrumentation device mounting device of the embodiment can increase friction through surface contact. Furthermore, the instrumentation device mounting device of the embodiment can uniformly distribute the normal force of the contact surfaces generated when the instrumentation device mounting device is fastened by the bolt 3 between the contact portions 1A and 2A. Therefore, the instrumentation device mounting device of the embodiment can reliably sandwich the cylindrical member 100 between the first contact portion 1A and the second contact portion 2A, allowing the first contact portion 1A and the second contact portion 2A to bite into the outer peripheral surface of the cylindrical member 100. As a result, the instrumentation device mounting device of the embodiment can securely mount the instrumentation device 10 to the cylindrical member 100. The contact surfaces of the first contact portion 1A and the second contact portion 2A are chamfered so that they are positioned tangent to the outer peripheral surface of the cylindrical member 100 when mounted on the cylindrical member 100. For example, if the cylindrical member 100 has a cylindrical shape and the first contact portion 1A and the second contact portion 2A are arranged in symmetrical positions with respect to the axis C of the cylindrical member 100, the contact surfaces are chamfered so that they face each other parallel to the axis C.

[0024] Furthermore, in the instrumentation device mounting device of the embodiment, when the cylindrical member 100 is made of metal, the first contact portion 1A and the second contact portion 2A are made of a metal material with a different hardness from that of the cylindrical member 100. Therefore, according to the instrumentation device mounting device of the embodiment, the first contact portion 1A and the second contact portion 2A and the cylindrical member 100 are made of metal materials with different hardnesses, so that the higher hardness portion easily bites into the lower hardness portion. Therefore, according to the instrumentation device mounting device of the embodiment, the first contact portion 1A and the second contact portion 2A can be reliably bitten into the outer peripheral surface of the cylindrical member 100. As a result, according to the instrumentation device mounting device of the embodiment, the instrumentation device 10 can be firmly mounted to the cylindrical member 100. Note that the instrumentation device mounting device of the embodiment does not exclude a configuration in which the first contact portion 1A and the second contact portion 2A are made of a metal material with a hardness equivalent to that of the cylindrical member 100 when the cylindrical member 100 is made of metal.

[0025] Furthermore, in the instrumentation device mounting device of the embodiment, the first contact portion 1A and the second contact portion 2A are made of a material having a higher hardness than the cylindrical member 100. Therefore, according to the instrumentation device mounting device of the embodiment, the first contact portion 1A and the second contact portion 2A are made of a metal material having a higher hardness than the cylindrical member 100, so that the first contact portion 1A and the second contact portion 2A easily bite into the cylindrical member 100. Therefore, according to the instrumentation device mounting device of the embodiment, the first contact portion 1A and the second contact portion 2A can be reliably bitten into the outer circumferential surface of the cylindrical member 100. As a result, according to the instrumentation device mounting device of the embodiment, the instrumentation device 10 can be firmly mounted to the cylindrical member 100. Note that the instrumentation device mounting device of the embodiment does not exclude a configuration in which the first contact portion 1A and the second contact portion 2A are made of a material having a lower hardness than the cylindrical member 100.

[0026] Furthermore, in the instrumentation device mounting device of the embodiment, the connection member 1, the holding member 2, and the bolt 3 are made of the same type of metal material. Therefore, because the bolt 3 and the connection member 1 and the holding member 2 that contact the bolt 3 are made of the same type of metal material, corrosion due to mutual contact can be prevented and durability can be improved. From the viewpoint of extending the lifespan, the connection member 1, the holding member 2, and the bolt 3 are preferably made of, for example, highly corrosion-resistant stainless steel. Note that the instrumentation device mounting device of the embodiment does not exclude a configuration in which the connection member 1, the holding member 2, and the bolt 3 are made of different types of metal material.

[0027] Furthermore, in the instrumentation device mounting device of the embodiment, if the contact portion of the instrumentation device 10 that comes into contact with the connection member 1 is metal, the connection member 1 is made of the same metal material as the contact portion. Therefore, since the connection member 1 and the contact portion of the instrumentation device 10 that comes into contact with the connection member 1 are made of the same metal material, corrosion due to mutual contact can be prevented and durability can be improved. From the perspective of extending life, the connection member 1 and the contact portion of the instrumentation device 10 that comes into contact with the connection member 1 are preferably made of, for example, highly corrosion-resistant stainless steel. Note that the instrumentation device mounting device of the embodiment does not exclude a configuration in which, if the contact portion of the instrumentation device 10 that comes into contact with the connection member 1 is metal, the connection member 1 is made of a metal material of a different material from the contact portion.

[0028] In addition, the instrumentation equipment installation method of the embodiment includes the steps of using the above-mentioned instrumentation equipment installation device to fix the instrumentation equipment 10 to the connecting member 1, determining the position of the instrumentation equipment 10 relative to the cylindrical member 100 and arranging the connecting member 1 and the holding member 2 on both sides of the cylindrical member 100, and tightening the bolt 3 to bring the connecting member 1 and the holding member 2 close together with the cylindrical member 100 between them.

[0029] Therefore, according to the instrumentation device mounting method of the embodiment, the above-described instrumentation device mounting device can be reliably mounted on the cylindrical member 100.

[0030] The present disclosure includes the following inventions. [Invention 1] An instrumentation device mounting device for mounting an instrumentation device to a columnar member, a connecting member to which the instrumentation device is fixed and which has a first contact portion that can come into contact with an outer circumferential surface of the columnar member; a holding member having a second contact portion that is provided opposite the connection member and is capable of contacting an outer circumferential surface of the columnar member; a bolt that is screwed into the connecting member and the holding member to bring the contact portions closer to each other; An instrumentation equipment mounting device comprising: [Invention 2] In the instrumentation device mounting device according to invention 1, when the columnar member is made of metal, the first contact portion and the second contact portion are made of a metal material having a different hardness from that of the columnar member. [Invention 3] The instrumentation device mounting device according to invention 1 or 2, wherein the first contact portion and the second contact portion are made of a material having a higher hardness than the columnar member. [Invention 4] The instrumentation device mounting device according to any one of inventions 1 to 3, wherein the connecting member, the holding member, and the bolt are made of the same type of metal material. [Invention 5] An instrumentation equipment mounting device according to any one of inventions 1 to 4, wherein, when the contact portion of the instrumentation equipment that comes into contact with the connecting member is made of metal, the connecting member is made of the same metal material as the contact portion. [Invention 6] The instrumentation device mounting device according to any one of inventions 1 to 5, wherein the first contact portion and the second contact portion are arranged symmetrically with respect to the columnar member. [Invention 7] The instrumentation device mounting device according to any one of inventions 1 to 6, wherein the first contact portion and the second contact portion are chamfered at portions that come into contact with the columnar member. [Invention 8] An instrumentation device mounting method using the instrumentation device mounting device according to any one of inventions 1 to 7, Fixing the instrumentation device to the connection member; determining a position of the instrumentation device relative to the columnar member and arranging the connection member and the holding member on both sides of the columnar member; tightening the bolt to bring the connecting member and the holding member closer together with the columnar member therebetween; An instrumentation device mounting method, including: [Explanation of symbols]

[0031] 1. Connecting member 1A First contact part 2. Retaining member 2A Second contact part 3 Volts 10 Instrumentation 100 Cylindrical member (columnar member)

Claims

1. An instrumentation device mounting device for mounting an instrumentation device to a columnar member, a connecting member to which the instrumentation device is fixed and which has a first contact portion that can come into contact with an outer circumferential surface of the columnar member; a holding member having a second contact portion that is provided opposite the connection member and is capable of contacting an outer circumferential surface of the columnar member; a bolt that is screwed into the connecting member and the holding member to bring the contact portions closer to each other; Including, the first contact portion and the second contact portion include a plurality of linear corner portions that allow contact along the axial direction of the columnar member; Instrumentation equipment mounting device.

2. 2. The instrumentation device mounting device according to claim 1, wherein the connecting member, the holding member, and the bolt are made of the same type of metallic material.

3. The instrumentation device mounting device according to claim 1 , wherein the first contact portion and the second contact portion are disposed symmetrically with respect to the columnar member.

4. The instrumentation device mounting device according to claim 1 , wherein the first contact portion and the second contact portion have chamfers formed at the projected corners that come into contact with the columnar member.

5. a connecting member having a first contact portion capable of contacting an outer circumferential surface of the columnar member, to which the instrumentation device is fixed; a holding member having a second contact portion that is provided opposite the connection member and is capable of contacting an outer circumferential surface of the columnar member; a bolt that is screwed into the connecting member and the holding member to bring the contact portions closer to each other; wherein the first contact portion and the second contact portion include a plurality of linear corner portions that allow contact along an axial direction of the columnar member, and an instrumentation device mounting method is used to mount the instrumentation device to the columnar member, Fixing the instrumentation device to the connection member; determining a position of the instrumentation device relative to the columnar member and arranging the connection member and the holding member on both sides of the columnar member; tightening the bolt to bring the connecting member and the holding member closer together with the columnar member therebetween; An instrumentation device mounting method, including:

6. An instrumentation equipment installation method as described in Claim 5, wherein when the columnar member is made of metal, the first contact portion and the second contact portion are made of a metal material having a different hardness from that of the columnar member.

7. An instrumentation equipment installation method as described in Claim 5, wherein the first contact portion and the second contact portion are made of a material having a higher hardness than the columnar member.

8. An instrumentation equipment installation method as described in Claim 5, wherein, when the contact portion of the instrumentation equipment that comes into contact with the connecting member is made of metal, the connecting member is made of a metal material of the same type as the contact portion.

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