Piping racks, piping units and plants

Abstract

To provide a piping rack capable of efficiently performing nut fastening work without interference of a coupling plate during the nut fastening work to a U-bolt, and a piping unit using the piping rack, and a plant.SOLUTION: A piping rack 1A comprises: a channel 2; a flat bar 3 arranged along the channel 2; a slit 4 that is formed between the flat bar 3 and the channel 2, and into which a leg part of a U-bolt 5 is inserted; and a coupling plate 8A that couples the flat bar 3 and the channel 2. The coupling plate 8A is spaced apart from the slit 4 so that a tool for fastening a nut to the U-bolt 5 does not interfere with the coupling plate 8A.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a piping rack for supporting piping, and a piping unit and a plant using the piping rack. [Background technology]

[0002] In plant facilities such as various factories and industrial complexes, laying and constructing pipes one by one results in extremely low construction efficiency. Therefore, a construction method has been adopted in which multiple pipes are grouped together and attached to a rack to form a piping unit, and many piping units are brought to the construction site and the piping units (the racks and the pipes) are connected to each other, thereby significantly improving construction efficiency (Patent Documents 1 and 2).

[0003] An example of such a piping rack (Patent Document 2) will now be described with reference to FIG.

[0004] FIG. 6 is a perspective view showing an example of use of the piping rack 1 of Patent Document 2. Flat bars 3 are arranged along channels 2 of the piping rack 1, with gaps (slits) 4 between the channels 2 and the flat bars 3. The piping is arranged perpendicular to the channel 2. The legs 5a, 5a of a U-bolt 5 are inserted into the slits 4 from above to hold down the piping. The piping is fixed by tightening nuts onto the legs 5a, 5a via washers. In this conventional example, a buffer spacer 6 is interposed between the piping and the channel 2 and flat bars 3, and the U-bolt 5 is inserted into small holes 6a, 6b of the buffer spacer 6. However, the buffer spacer 6 may be omitted.

[0005] As shown in Figure 7, the flat bar 3 is connected to the channel 2 by a connecting plate 8. The connecting plate 8 is arranged below the channel 2 and the flat bar 3. The connecting plate 8 has its plate surface perpendicular to the longitudinal direction and is arranged at a predetermined interval in the longitudinal direction of the channel 2 and the flat bar 3. The connecting plate 8 is fixed to both the channel 2 and the flat bar 3 by welding or the like. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-32738 [Patent Document 2] Utility Model Registration No. 3195767 Summary of the Invention [Problem to be solved by the invention]

[0007] In conventional piping racks, the connecting plates are installed across the underside of the slits 4, as shown in Figure 7. Therefore, if the legs of the U-bolts are close to the connecting plates, it can be difficult to tighten the nuts. In addition, it may be necessary to cut the connecting plates with a grinder in order to tighten the nuts.

[0008] The present invention aims to provide a piping rack that allows efficient nut tightening work without interference from connecting plates when tightening nuts on U-bolts, and a piping unit and plant that use this piping rack. [Means for solving the problem]

[0009] The present invention solves the above problems by the following configuration.

[0010] [1] Channel and a flat bar disposed along the channel; a slit formed between the flat bar and the channel into which a leg of a U-bolt is inserted; a connecting plate that connects the flat bar and the channel; In a piping rack having The piping rack is characterized in that the connecting plates are spaced apart from the slits so that a tool for tightening nuts on U-bolts does not interfere with the connecting plates.

[0011] [2] The connecting plate has a vertical portion whose upper end is fixed to the flat bar, and a horizontal portion extending from the vertical portion and whose tip end in the extension direction is fixed to the channel. [1] Piping rack.

[0012] [3] The connecting plate has a horizontal portion disposed below the flat bar and the channel, and vertical portions rising upward from both ends of the horizontal portion, The piping rack of [1], wherein the upper end of one vertical section is fixed to the flat bar and the upper end of the other vertical section is fixed to the channel.

[0013] [4] A piping unit having a piping rack according to any one of [1] to [3] and piping fixed to the piping rack by U-bolts.

[0014] [5] A plant in which multiple piping units [4] are arranged and the pipes of the piping units are connected to each other. [Effects of the Invention]

[0015] In the present invention, the connecting plate connecting the channel of the piping rack and the flat bar is spaced apart from the slit, so that the connecting plate does not interfere when tightening nuts onto the U-bolts, allowing for efficient tightening of the nuts. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a perspective view of the piping rack according to the embodiment, seen from below. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 10 is a cross-sectional view showing an example of use of the piping rack. [Figure 4]FIG. 10 is a cross-sectional view showing an example of use of a piping rack according to another embodiment. [Figure 5] FIG. 10 is a cross-sectional view showing an example of use of yet another piping rack. [Figure 6] FIG. 1 is a perspective view of a conventional piping rack from above. [Figure 7] FIG. 1 is a perspective view of a conventional piping rack from below. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment will be described with reference to FIGS.

[0018] Fig. 1 is a perspective view of the channels and flat bars of a piping rack 1A according to the first embodiment as seen from below, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 shows the state in which piping P is attached to the piping rack 1a.

[0019] In this piping rack 1A, the connecting plate 8A connecting the channel 2 and the flat bar 3 is an L-shaped plate. That is, the connecting plate 8A has a vertical portion 8a and a horizontal portion 8b. The upper end of the vertical portion 8a is fixed to the underside of the flat bar 3 by welding or the like, and the tip of the horizontal portion 8b is fixed to the web portion 2b of the channel 2 by welding or the like. The channel 2 has a U-shaped cross section having the web portion 2b, an upper flange portion 2a, and a lower flange portion 2c, but is not limited to this. A slit 4 is formed between the upper flange portion 2a and the flat bar 3.

[0020] The width of the vertical portion 8a is smaller than the width of the flat bar 3. The upper end of the vertical portion 8a on the web 2b side is sufficiently separated from the slit 4. The separation distance between the upper end of the vertical portion 8a and the slit 4 is preferably 13 mm or more, and particularly preferably about 13 to 16 mm.

[0021] The upper edge of the horizontal portion 8b is located sufficiently below the flat bar 3 and upper flange portion 2a. The distance between the flat bar 3 and upper flange portion 2a and the horizontal portion 8b is preferably 48 mm or more, particularly 48 to 53 mm.

[0022] In this way, since the connecting plate 8A is sufficiently spaced from the slit 4, even when the U-bolt 5 that holds the pipe P approaches the connecting plate 8A as shown in Figure 3, a tool such as a ratchet wrench does not interfere with the connecting plate 8A when tightening the nut 7 onto the leg 5a of the U-bolt 5, allowing the nut tightening work to be carried out efficiently. Note that the reference numeral 9 in Figure 3 denotes a washer.

[0023] 1 to 3, the channel 2 has a U-shaped cross section, but it may have an L-shaped cross section like the channel 2B in FIG. 4, or may be a flat channel 2C as in FIG.

[0024] 5, vertical portions 8a and 8c rise from one end and the other end of horizontal portion 8b, with the upper end of vertical portion 8a fixed to flat bar 3 and the upper end of vertical portion 8c fixed to channel 2C. The distance between vertical portion 8c and slit 4 is preferably 13 mm or more, and particularly preferably about 13 to 16 mm.

[0025] Other configurations in FIGS. 4 and 5 are the same as those in FIG. 3, and the same reference numerals denote the same parts.

[0026] 3 to 5, a plurality of piping units each having piping P attached to a piping rack are fabricated in a factory, and then transported to a plant construction site or the like, where the piping units are arranged side by side and the piping is connected to each other to construct a plant. An example of such a plant is a water treatment plant, but it is not limited to this.

[0027] The above-described embodiment is an example of the present invention, and the present invention may have other configurations. [Explanation of symbols]

[0028] 1,1A Piping rack Channels 2, 2B, and 2C 3 Flat Bar 4 slits 5 U-bolts 8, 8A, 8B, 8C connecting plate 8a, 8c vertical section 8b Lateral section

Claims

1. Channel and a flat bar disposed along the channel; a slit formed between the flat bar and the channel into which a leg of a U-bolt is inserted; a connecting plate that connects the flat bar and the channel; In a piping rack having The connecting plate is spaced apart from the slit so that a tool for tightening nuts on the U-bolts does not interfere with the connecting plate, The connecting plate is a piping rack having a vertical portion whose upper end is fixed to the flat bar and a horizontal portion extending from the vertical portion and whose tip end in the extension direction is fixed to the channel.

2. The channel has a U-shaped cross section having an upper flange portion (2a), a lower flange portion (2c), and a web portion (2b) connecting the upper flange portion and the lower flange portion, 2. The piping rack according to claim 1, wherein the leading end side of the horizontal portion of the connecting plate in the extending direction is fixed to the web portion.

3. The channel has an L-shaped cross section having an upper flange portion (2a) and a web portion (2b), 2. The piping rack according to claim 1, wherein the leading end side of the horizontal portion of the connecting plate in the extending direction is fixed to the web portion.

4. A channel; a flat bar disposed along the channel; a slit formed between the flat bar and the channel into which a leg of a U-bolt is inserted; a connecting plate that connects the flat bar and the channel; In a piping rack having The connecting plate is spaced apart from the slit so that a tool for tightening nuts on the U-bolts does not interfere with the connecting plate, the connecting plate includes a horizontal portion disposed below the flat bar and the channel, and vertical portions extending upward from both ends of the horizontal portion, A piping rack having an upper end of one vertical section fixed to the flat bar and an upper end of the other vertical section fixed to the channel.

5. A piping rack according to any one of claims 1 to 4; A piping unit having piping fixed to the piping rack by U-bolts.

6. A plant in which a plurality of piping units according to claim 5 are arranged, and the pipes of the piping units are connected to each other.

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