JP2019076166A - Installation method of sprinkler system - Google Patents

Abstract

To provide an installation method of a sprinkler system in which the connection work of a water conduit on site is easy and safe and one person work is possible.SOLUTION: A sprinkler system has: each sprinkler head being dotted and arranged in the ceiling of the building; a multi-mouth joint connected to the supply part of water for fire extinguishing and having branch ports corresponding to at least the number of the sprinkler heads; a water conduit for bringing each branch port of the multi-mouth joint into communication with each sprinkler head; and a simple joint for connecting the water conduit with the branch port. An installation method of the sprinkler system is characterized in that: the simple joint has a configuration that a connection end with at least the water conduit can be connected in an insertion operation; the connection end with the branch port and the connection end with the water conduit are constituted to be rotatable to each other; a simple joint attaching step of previously attaching only multiple simple joints to each branch port in a step before carriage to the installation site; and a water conduit inserting step of inserting and connecting the water conduit to the connection end of the simple joint is performed in the ceiling of the building at an installation site.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method of installing a sprinkler system that communicatively connects a water supply pipe, which is a water supply source for fire extinguishing, with a sprinkler head.

  On the ceiling of each floor of the building, sprinkler heads are placed at predetermined intervals to release water for fire extinguishing when a fire occurs. FIG. 5 shows an appearance of a sprinkler system in which a water supply pipe 10 for supplying extinguishing water and a sprinkler head 26 are communicatively connected by a water conduit 22 through a multi-port joint 18 on the ceiling of each floor. However, the sprinkler head 26 is shown exaggerated. In the sprinkler system shown in FIG. 5, one water supply pipe 10 and 16 sprinkler heads 26 disposed at the back of a ceiling, for example, use two multi-port joints 18 and 16 water transmission pipes 22. It is connected. One multi-port joint 18 has eight branch ports 18 a and is connected to the water supply portion 12 of the water supply pipe 10. The lengths from the multi-port joint 18 of the water conduit 22 to the sprinkler head 26 are respectively different. The water conduit 22 is made of a flexible aluminum composite resin tube, and retains its shape when it is bent (see Patent Document 1).

  A one-touch joint 20 is used to connect the multi-port joint 18 and the water conduit 22 (see Patent Document 1). The one-touch joint 20 has a rotation mechanism and is configured to maintain air tightness and water tightness.

  The work to install the sprinkler system in the ceiling of the building is a work space so narrow in some cases that it is high, so at present a method called a so-called prefabricated construction method is adopted. The prefabrication method will be briefly described below.

  The prefabricated construction method is a large work space in a factory, and a plurality of water pipes 22 are connected in advance to the multi-port joint 18 using the one-touch joint 20 to manufacture one assembly (referred to as an assembly). . Then, the assembled assembly is carried to the site, where the multi-port joint 18 of the assembly is attached to the water supply portion 12 of the water supply pipe 10, and then each water conduit 22 is extended to the attachment position of each sprinkler head 26 for communication It is a method of connecting.

  The water conduit 22 is cut to a length determined in advance by a design drawing or the like, and wound so as to be easily carried into the site. In addition, a sprinkler head joint 24 (see Patent Document 1) is attached to the water conduit 22 so that the sprinkler head 26 can be easily attached at the site. The sprinkler joint 24 is an octagonal hollow pipe as described later, and an internal thread is cut on the inner circumferential surface of the tip so that the sprinkler head 26 can be screwed. The sprinkler head joint 24 has a rotating mechanism, is configured to maintain air tightness and water tightness, and has an elbow shape so as to change the flow direction of water by 90 degrees.

  FIG. 6 shows the assembly 30 in which the one-touch joint 20, the water conduit 22 and the joint 24 for sprinkler head are all attached to the multi-port joint 18 as described above. 6 (a) is a plan view of the assembly 30, and FIG. 6 (b) is a side view of the assembly 30. FIG.

  The assembly 30 to which all the members are connected is carried into the ceiling, which is the site. At the site, the multi-port fitting 18 is attached to the water supply pipe 10. FIG. 7 shows the attachment. The flange portion 16 of the multi-port joint 18 and the connection flange 14 attached to the water supply portion 12 of the water conduit 10 are connected by bolts or the like. At the time of this connection, since there is a variation in the length of each water conduit 22, it is necessary to rotate the multi-port joint 18 to align the directions of the water conduits 22. Thereafter, the water conduit 22 is extended to each sprinkler head 26, the sprinkler head joint 24 is fixed to the back of the ceiling with a predetermined fixture, and the sprinkler head joint 24 is screwed into the sprinkler head joint 24 to complete the work.

JP, 2014-114930, A

  The prefabricated construction method of carrying in the assembly 30 which attached the water pipe 22 to the multi-port joint 18 beforehand, attached the multi-port joint 18 to the water pipe 10, and then extending the water pipe 22 and attaching the sprinkler head There was a problem with

  When a plurality of water conduits 22 are connected to the multi-port joint 18, the total weight of the assembly 30 is large, and it is dangerous to carry the assembly 30 in a narrow ceiling or at a high place, and it is difficult to work alone. Also, the water pipe 22 has variations in length, and it is necessary to control the installation position of the multi-port joint 18, and the assembly 30 at a narrow ceiling or at a high place is rotated to align the direction of the water pipe 22. The work was difficult and dangerous. Furthermore, because the assembly 30 is large and bulky, it is difficult to secure a storage place until the assembly 30 is carried to the site.

  The present invention has been made in view of the above problems, and an object thereof is to provide a method of installing a sprinkler system in which the connection work of the water conduit at the site is easy and safe and can be performed by one person.

In order to achieve the above object, the installation method of the sprinkler system according to claim 1 is:
A multi-port joint having sprinklers heads arranged on the ceiling of a building, a multi-port joint connected to a water supply for fire extinguishing and having at least the number of branch ports of the sprinkler heads, each branch and the multi-port joint In a method of installing a sprinkler system, comprising: a water pipe connecting and connecting each sprinkler head; and a simple joint connecting the water pipe and the branch port,
The simplified joint has a configuration in which at least the connection end with the water conduit can be connected in a plug-in operation, and the connection end with the branch port and the connection end with the water conduit are mutually rotatable. A simple joint attachment step of attaching only a plurality of the simple joints to each of the branch ports in advance before carrying to the installation site is performed, and the water conduit is mounted on the ceiling of the building at the installation site. And a water pipe insertion step of inserting and connecting to the connection end of the simple joint.

  According to this method, the multi-port joint with only the simple joint attached thereto and the water conduits are separately carried into the installation site. Therefore, there is no danger associated with carrying heavy objects, which was a problem in the prefabricated construction method, to a narrow high place, and carrying-in work can also be carried out by one person. That is, the multi-port joint with only the simple joint carried into the installation site and each water conduit are lightweight and not bulky, so they can be easily carried in and the storage location before carrying in is flexible. is there.

  In addition, since the simple joint is attached to the multi-port joint at the stage before transportation to the installation site, the connection to the multi-port joint of the water pipe on the site is one end of the water pipe per end It is sufficient to insert the part into the connection end of the simple joint attached to the multi-port joint.

  Therefore, it is possible to work safely alone in a small place or a high place. In addition, since the work is simply inserting, the construction quality is stable, and it can be performed by an operator who is not qualified for the construction of a fire pipe.

  Furthermore, although the water conduits have different lengths and need to be inserted into the appropriate branch port of the multi-port joint, the insertion position in the multi-port joint can be easily selected, which is a problem in the conventional prefabrication method There is no need to adjust the rotation of multi-port joints.

  According to the installation method of the sprinkler system of the present invention, since the multiport joint and the water conduit, to which only the simple joint is previously attached, are separately carried to the site, the heavy load as shown in the background art can be reduced to a narrow height There is no risk associated with carrying in. In addition, since the simple joint is already connected to the multi-port joint at the stage before transportation to the installation site, the connection work of the water pipe at the site requires one water pipe per pipe, one end of which is a simple joint Just plug it into the connection end of the. Therefore, even in a difficult place such as a narrow place or a high place, one person can work safely. In addition, the construction quality is stable because the work is merely inserting, and it can be performed by a worker who is not qualified for the construction of a fire pipe.

It is a flowchart of the installation method of the sprinkler system of this invention. The embodiment of the installation method of the sprinkler system of the present invention is shown, and the appearance of the simple joint attachment process is shown. The embodiment of the installation method of the sprinkler system of the present invention relates to a multi-port joint connecting step. The embodiment of the installation method of the sprinkler system of the present invention relates to a state of the water pipe insertion step. The appearance of the sprinkler system in which the sprinkler head and the water supply pipe are connected by a water conduit is shown. The present invention relates to a conventional method of installing a sprinkler system, wherein (a) shows a plan view of an assembly and (b) shows a side view of the assembly. Figure 7 shows the attachment of the assembly of Figure 6 to a water supply; However, the water pipe has shown the state which unwounded the state to which it was wound to some extent.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a flow diagram of the installation method of the sprinkler system of the present invention. In the sprinkler system installation method of the present invention, a simple joint mounting process (step S1) to each branch port of a multi-port joint in a factory, a member loading process in a state where the multi-joint is connected to the simple joint (step S2) ), The multi-hole joint connecting process to the water supply section at the site (step S3) and the water pipe insertion process to the simplified joint at the site (step S4). Each step will be described below.

  FIG. 2 shows a state of a simple joint attaching process (step S1) to each branch port of a multi-port joint in a factory. In the present embodiment, the simple joint uses a one-touch joint (see Patent Document 1). The one-touch joint 20 has a connection end 20a attached to the branch port 18a of the multi-port joint 18 and a connection end 20b to which the water conduit can be connected by the insertion operation, and the connection end 20a with the branch port 18a The connection end 20b with the water pipe is configured to be mutually rotatable. That is, the one-touch joint 20 has a rotation mechanism, and is configured to maintain air tightness and water tightness.

  In this simple joint attachment process, for example, an operation of attaching only the one-touch joint 20 to each branch port 18a of the multi-port joint 18 is performed in a stage before transportation to the installation location. The multi-port joint 18 is removed from the connection flange 14 connected to the water supply portion 12 on the back of the ceiling where the sprinkler system is to be installed, and is carried into the factory. Or it may be another multi-port joint stored in the factory. In the present embodiment, the multi-port joint 18 is used having eight branch ports 18 a.

  The attachment of the one-touch joint 20 to the branch port 18a of the multi-port joint 18 is performed by screwing the connection end 20a of the one-touch joint 20 to the branch port 18a. The work of screwing and connecting only the one-touch joint 20 to each of the eight branch ports 18a of the multi-port joint 18 is performed in a factory having a large work space. Therefore, since this work can be performed in a wide work space and the one-touch joint 20 is lightweight, it can be performed without impairing the work quality.

  Next, the member carrying-in step (step S2) is performed in a state in which the simplified joint is connected to the multi-port joint. The members are the multi-port joint 18 to which only the above-described one-touch joint 20 is attached and the plurality of water conduits 22 and is carried from the factory to the installation site (the ceiling back). In the present embodiment, since the multi-port joint 18 has eight branch ports 18 a, there are eight water conduits 22 per one multi-port joint 18. The water pipe 22 is an aluminum composite resin pipe, and each length is adjusted to the distance from the branch port 18a of the multi-port joint 18 to the installation place of the sprinkler head, and the length is different for each one . Attached to the end of the water conduit 22 is a sprinkler head joint 24 to which a sprinkler head is attached, and the water conduit 22 is wound for loading.

  The multi-port joint 18 with only the one-touch joint 20 attached, and the eight wound water conduits 22 can be carried in separately, so carrying-in to the site can be done by one person and is easy Can. That is, since it is separately carried into the site, it is possible to safely carry in the work of carrying in heavy materials as in the conventional prefabricated construction method. Also, with regard to the storage place until the delivery, each member is not bulky, so there is freedom.

  FIG. 3: shows the multi-mouthed joint connection process (step S3) to the water supply part in the field. In this process, an operation of connecting the multi-port joint 18 in which only the one-touch joint 20 is connected to each branch port 18 a to the water supply portion 12 of the water supply pipe 10 is performed.

  In operation, the connection flange 14 attached to the water supply portion 12 of the water supply pipe 10 and the flange portion 16 of the multi-port joint 18 are connected. This connection can be made by the common connection method of bolts and nuts (not shown) with the connection surfaces of the flanges being aligned. When aligning the connecting surfaces of the flange portion 14 of the multi-port joint 18 and the connection flange 16, nothing is connected to the branch port 18 a of the multi-port joint 18 other than the one-touch joint 20. It is not necessary to rotate and adjust to a specific position, and one person can work safely. Although the multi-port joint 18 and the connection flange 16 of the multi-port joint are integrally formed, they may be assembled.

  FIG. 4 shows the state of the water pipe insertion step (step S4) to the simple joint at the site. In this process, at the site, as shown in FIG. 4, one end of the water conduit 22 carried in one by one, the end 22 a to which the sprinkler head joint 24 is not attached is attached to the multi-opening joint 18. An operation of inserting and connecting to the connection end of the joint 20 is performed. Since this work only inserts the water pipe 22 into the one-touch joint 20, it is possible to easily work alone in a narrow ceiling. In addition, since the work is simply inserting, the construction quality is stable, and it can be performed by an operator who is not qualified for the construction of a fire pipe.

  The sprinkler head joint 24 has a rotating mechanism, is kept airtight and water tight, and has an end 24a into which the water conduit 22 is inserted, and an elbow-shaped attachment portion 24b. The mounting portion 24 b has a hollow octagonal shape, and a female screw is cut on the inner inner peripheral surface of the tip portion 24 c so that the sprinkler head 26 can be screwed. In addition, the direction of water flow changes by 90 degrees between the end 24a into which the water conduit 22 is inserted and the tip 24c of the attachment 24b to which the sprinkler head is attached. This facilitates connection between the sprinkler head and the water conduit. It is.

  According to the installation method of the sprinkler system of the present embodiment, only the one-touch joint 20 is attached to each branch port 18a of the multi-port joint 18 in the factory, and the multi-port joint on which only the one-touch joint 20 is attached 20 and each water conduit 22 are carried in respectively. At the site, the water conduits 22 are inserted one by one into the connection end of the one-touch joint 20 in which one end is screwed and connected to the multi-port joint 18. Therefore, there is no work of transporting heavy goods, and one person can safely work even in a difficult place such as a narrow place or a high place. Furthermore, since the water conduit 22 may be simply inserted into the one-touch joint 20, the construction quality is stable, and it can be performed by an operator who is not qualified for the construction of fire-fighting piping.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, although the multi-port joint 18 is shown to have eight connection ports, it is not limited thereto. Moreover, although the water conduit 22 showed what was comprised by the aluminum composite resin pipe, it does not restrict to this. Further, although the sprinkler head joint 24 for attaching the sprinkler head is connected to the water conduit 22 at the site, the sprinkler head joint 24 may be attached to the water conduit 22 at the site. Moreover, although the coupling 24 for sprinkler heads illustrated the thing of elbow type, it does not restrict to this.

  Furthermore, although the simple joint uses a one-touch joint (see Patent Document 1), a joint having a similar function is not limited to the one-touch joint. That is, one connecting end can be connected by inserting the water conduit, and the other connecting end has been exemplified in the present embodiment as being screwed into the branch port of the multi-port joint, Regardless of this. Further, in the simple joint attachment process, an operation of screwing and connecting only a plurality of one-touch joints to each branch port of the multi-port joint is performed at a stage before transportation to the installation site. In this embodiment, this work is performed in a wide space in the factory, but if it can be safely done, it is not limited to the factory.

DESCRIPTION OF SYMBOLS 10 Water supply pipe 12 Water supply part 14 Flange for connection 16 Flange part of multi-port joint 18 Multi-port joint 18a Branching port 20 One-touch joint (simple joint)
22 water pipe 24 sprinkler head fitting 26 sprinkler head 30 assembly

Claims (1)

A multi-port joint having sprinklers heads arranged on the ceiling of a building, a multi-port joint connected to a water supply for fire extinguishing and having at least the number of branch ports of the sprinkler heads, each branch and the multi-port joint In a method of installing a sprinkler system, comprising: a water pipe connecting and connecting each sprinkler head; and a simple joint connecting the water pipe and the branch port,
The simplified joint has a configuration in which at least the connection end with the water conduit can be connected in a plug-in operation, and the connection end with the branch port and the connection end with the water conduit are mutually rotatable. Is configured and
At the stage before transportation to the installation site, a simple joint attachment process is performed in which only the plurality of simple joints are attached to the branch ports in advance,
A method of installing a sprinkler system, comprising performing a water pipe insertion step of inserting and connecting the water pipe into the connection end of the simplified joint on the ceiling of a building at the installation site.

Images