JP2011058566A - Pipe support member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe support member reducing vibration of a pipe. <P>SOLUTION: The pipe support member includes: a first member abutting on a plurality of pipes at pipe fixing parts; a second member abutting on the plurality of pipes at the pipe fixing parts, and fixed to sandwich the plurality of pipes between the first member and the second member; and a damping member disposed between at least one pipe fixing part and the pipe, out of the plurality of pipes. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pipe support member that mainly supports a pipe having vibration.

  In a thermal nuclear power plant, pipes of various diameters and thicknesses are used for pipes connecting the equipment. A pipe having a small outer diameter is about 10 mm, and a pipe having a large outer diameter is 3600 mm. Among these, piping in the turbine building may vibrate due to pulsation of the internal fluid of the piping, or disturbance of the fluid flow on the downstream side of a throttle mechanism such as a valve or an orifice.

On the other hand, when other piping or a supporting structure for supporting the piping is attached to the piping, many are bonded by fillet welding. FIG. 6 shows an example of a conventional support structure. Surrounding the vibrating pipe 104 with a square-shaped steel material 109 is a lug 108 for a support structure attached to the pipe 104 by fillet welding (a lug is used when a heat insulating material is wrapped around the pipe). It is fixed and vibration is suppressed. Moreover, FIG. 7 can be mentioned as another example enclosed with a square steel material like FIG. 6 (refer patent document 1, FIG. 2). At the piping design stage, vibration piping is predicted based on past plant experience, and the type, direction, and location of the support structure are selected. However, the vibration does not necessarily damage the structure that is completely connected to the piping. May not be suppressed. When continuously used in the presence of vibration, cracks due to vibration occur at discontinuous parts where stress is concentrated, such as fillet welds of lugs for fixing support structures and fillet welds of small diameter pipes. May occur and cause damage. In such a case, in order to prevent damage due to vibration of the pipe, vibration is conventionally suppressed by supporting the vibration pipe with a support structure fixed to the building.

Japanese Patent Laid-Open No. 2000-230673

  However, in the above-described support method, there may be no floor or wall for fixing the support structure in the vicinity, so that the support device itself becomes larger, the material cost increases, and the construction period also increases. In addition, the size of the support device for preventing vibrations is increased, and the position where the pointing structure can be installed is inevitably limited due to the space constraints of the building. Therefore, the support structure is not necessarily installed at the optimal position. I can't do it.

  According to an aspect of the present invention, a first member that is in contact with a plurality of pipes and a pipe fixing portion, and a contact that is in contact with the plurality of pipes and a pipe fixing portion, and the plurality of pipes are connected to the first member. There is provided a pipe support member having a buffer member between at least one of the plurality of pipes and the second member fixed so as to be sandwiched between the pipe fixing part and the pipe.

  An object of the present invention is to provide a pipe support member that reduces vibration of the pipe.

It is a perspective view concerning an embodiment of the invention. It is a perspective view concerning an embodiment of the invention. It is a perspective view concerning an embodiment of the invention. It is a perspective view concerning an embodiment of the invention. It is a perspective view concerning an embodiment of the invention. It is a front view which illustrates the conventional piping support member. It is a front view which illustrates the conventional piping support member.

  The first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the first pipe 1 and the second pipe 2 are provided substantially in parallel, and are fixed so as to be sandwiched between the support member 5 a that is the first member and the support member 5 b that is the second member. Has been. A buffer material 3 is provided between the first pipe 1 and the support members 5a and 5b. The support member 5a, the support member 5b, and the fixing member 4 are fastened and fixed.

  Of the support members 5a and 5b, the pipe fixing portion 6 disposed around the pipe has a semicircular cross-sectional shape so as to cover the pipe. The first pipe 1 is a pipe where vibration is expected, and the second pipe 2 is a pipe where vibration is not expected. These can be fixed by the support members 5a and 5b to increase the rigidity of the first pipe 1 and suppress vibration.

  The buffer material 3 is a metal bundle. By using a metal bunch-like buffer material, vibration can be further reduced by dissipating the vibration energy of the piping by frictional heat with the buffer material. Moreover, since the transmission of the vibration from the piping to the fixing bolt for tightening the clamp can be suppressed, the fixing bolt can be prevented from being broken.

According to the present invention, it is possible to reduce the work period and cost by having no welded portion, being able to be fixed only by bolting, and eliminating the time-consuming welding operation. In addition, since there is no need to fix it to the building, it can be installed if there is an adjacent pipe, and the metal wire constituting the metal bundle that can be installed in a small space includes stainless steel wire, iron wire, etc. . The thickness is 0.02 mm to 0.8 mm. (Stainless steel wire JIS G 3532 Iron wire JIS G 4309) The thickness is such that the gap between the first pipe 1 and the support members 5a and 5b can be filled. Further, a viscoelastic body of a polymer material such as rubber or silicon resin can be used instead of the metal bundle.

  In addition, the present invention can increase the rigidity of the pipe by using the adjacent pipe even in a narrow space limited to suppress vibration, particularly in the pipe having a medium diameter (outer diameter 65 mm to 1800 mm). Further, by suppressing the vibration by reducing the support structure, the cost can be reduced and the installation period can be shortened.

  Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 2, the first pipe 11 and the second pipe 12 are provided so as to intersect with each other, and are fixed so as to be sandwiched between support members 15a and 15b. The support members 15a and 15b are shaped according to the installation positions of the first pipe 11 and the second pipe 12, and in the present embodiment, the support members 15a and 15b are formed between the pipe 11 and the second pipe 12. There is a twisted part in between. A buffer material 3 is provided between the first pipe 11 and the support members 15a and 15b. The support member 15a and the support member 15b are fastened and fixed by the fixing member 4.

  Of the support members 15a and 15b, the pipe fixing portion 16 disposed around the pipe has a semicircular cross-sectional shape so as to cover the pipe.

  Further, the first pipe 11 is a pipe that is expected to vibrate, and the second pipe 12 is a pipe that is not expected to vibrate. These can be fixed by the support members 15a and 15b to increase the rigidity of the first pipe 11 and suppress vibration. Since the details of the cushioning material 3 are described in the first embodiment, the description is omitted here.

  Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 3, a first pipe 21 and a second pipe 22 are fixed so as to be sandwiched between support members 25a and 25b. A buffer material 3 is provided between the first pipe 21 and the second pipe 22 and the support members 25a and 25b. The support member 25a, the support member 25b, and the fixing member 4 are fastened and fixed.

  Of the support members 25a and 25b, the pipe fixing portion 26 arranged around the pipe has a semicircular cross-sectional shape so as to cover the pipe. Both the first pipe 21 and the second pipe 22 are pipes that are expected to vibrate. By fixing them with the support members 25a and 25b, the rigidity of the first pipe 21 and the second pipe 22 can be increased and vibration can be suppressed. Since the details of the cushioning material 3 are described in the first embodiment, the description is omitted here.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. In FIG. 4, the first pipe 31 and the second pipe 32 are provided so as to intersect with each other, and are fixed so as to be sandwiched between the support members 35a and 35b. The support members 35a and 35b have shapes that match the installation positions of the first pipe 31 and the second pipe 32. In the present embodiment, the support members 35a and 35b are formed between the pipe 31 and the second pipe 32. There is a twisted part in between. A buffer material 3 is provided between the first pipe 31 and the support members 35a and 35b. The support member 35a and the support member 35b are fastened and fixed by the fixing member 4.

  Of the support members 35a and 35b, the pipe fixing portion 36 disposed around the pipe has a semicircular cross-sectional shape so as to cover the circumference of the pipe.

  Moreover, both the 1st piping 31 and the 2nd piping 32 are piping by which vibration is anticipated. By fixing these with the support members 35a and 35b, the rigidity of the first pipe 21 and the second pipe 22 can be increased and vibration can be suppressed. Since the details of the cushioning material 3 are described in the first embodiment, the description is omitted here.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. In FIG. 5, support members 55a, 55b, 56a, 56b, 57a, and 57b have shapes that can be fixed so as to sandwich three pipes. A plurality of these support members are provided on the extension of the first pipe 51, the second pipe 52, and the third pipe 53. In FIG. 5, as an example, three pipes and support members having a buffer material between all three pipes are taken as an example, but three or more pipes may be used, and the support members do not vibrate. Etc., it is not always necessary to have a cushioning material between all the pipes. Moreover, you may have a twist part between the parts which fix the piping of a support member according to the shape of piping. Since the details of the cushioning material 3 are described in the first embodiment, the description is omitted here. Moreover, although the pipe fixing parts 6, 16, 26, and 36 have a semicircular cross-sectional shape, the present invention is not limited to this. For example, it may be a shape having a pipe shape such as a part of a circle.

Heretofore, the present embodiment has been illustrated. However, the present invention is not limited to these descriptions.
Any modifications made by those skilled in the art with respect to the above-described embodiments are also included in the scope of the present invention as long as they include the features of the present invention.

3 cushioning material, 5a, 5b, 15a, 15b, 25a, 25b, 35a, 35b, 55a, 55b support member,
6, 16, 26, 36 Piping fixing part

Claims (7)

A first member that is in contact with a plurality of pipes and a pipe fixing part;
A second member that is brought into contact with the plurality of pipes at a pipe fixing portion and fixed so as to sandwich the plurality of pipes with the first member;
A pipe support member having a buffer member between at least one of the pipe fixing portions and the pipe among the plurality of pipes.   The pipe support member according to claim 1, wherein the pipe provided with the buffer member between the pipe fixing portion can vibrate.   The pipe support member according to claim 1, wherein the buffer member is provided over the entire circumference of the pipe between the pipe fixing portion and the pipe.   The pipe support member according to claim 1, wherein the pipe fixing portion has a shape of a part of a circle in a cross section perpendicular to the pipe longitudinal direction.   The pipe support member according to claim 1, wherein the pipe fixing portion has a semicircular shape in a cross section perpendicular to the pipe longitudinal direction.   The pipe support member according to claim 1, wherein the buffer member uses a metal bundle or a viscoelastic body made of a polymer material.   2. The twist according to claim 1, wherein the pipe support member is provided with a twist in accordance with a position of the pipe supported by each of the pipe fixing parts between each of the pipe fixing parts that support another pipe. Piping support member.

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