JP4839062B2 - Piping method with water-based fire extinguishing piping - Google Patents

Description

  The present invention relates to a piping method in a fire-extinguishing water pipe that is piped to a building, and more particularly, to a piping method capable of connecting with a fire-extinguishing water pipe that supplies fire-extinguishing water to a sprinkler head with high workability.

  Conventionally, water pipes for fire extinguishing applied to buildings are provided with branch pipes that supply water to terminal equipment such as sprinkler heads arranged on the ceiling or the like along the piping space such as the back of the ceiling or the ceiling plate ( Patent Document 1). However, in this case, each branch pipe was cut to the length specified in the drawing in accordance with the piping construction drawing at the construction site, or cut according to the actual size at the site, and was cut. This was done by so-called on-site processing in which the pipe materials were combined while being appropriately joined using fittings such as flanges and sockets.

  When branch pipes are processed on-site at the construction site, the dimensional accuracy and processing accuracy are greatly affected by the skill of the operator, and since the accuracy itself is low, there is a problem that the material used is likely to be wasted. In addition, since the piping space formed in the ceiling or the like is narrow, there is also a problem that connection workability is poor.

So, in piping in buildings, branch pipes made of flexible members are dimensionally processed, and pipe units connected to the main pipe are pre-fabricated (prefabricated) and brought to the site. A technique for connecting the main pipe portion to the main building portion has been proposed (Patent Document 2).
JP 2001-25514 A Japanese Patent No. 2606808

Even when the branch pipe formed using the above-mentioned flexible member is prefabricated and brought into the site and connected, the connection with the water supply pipe etc. is connected at the ceiling, so it is connected to the header. When the branch pipes are connected, the weight is heavy, handling is difficult, and it is difficult to install the header.
In addition, when the branch pipe must pass through the beam, there may be a case where the branch pipe cannot pass through the through hole provided in the beam in a state where the connector and the other end are connected to the header. In that case, it is necessary to cut the branch pipe once in the middle and convert the branch pipe into a through hole and then connect the branch pipe again with a joint such as a socket.

  This invention is formed paying attention to such a point, and it aims at providing the piping method which can pipe | pipe the fire-fighting water piping arrange | positioned in a building reliably with high workability | operativity.

In the present invention described in claim 1, a header is connected in communication with a water supply main pipe for fire extinguishing piped in a piping space of a building, and the header and a fire extinguishing terminal device arranged at an appropriate place in the building are connected. It is a piping method for water-based fire extinguishing pipes that are connected in communication with branch pipes, and a plurality of T pipes can be rotated relative to each other on the same axis so that the derivation direction can be freely set around the same axis and Prepare a header in which a one-touch joint that can be directly inserted and connected at one end of a branch pipe is used as a joint body, and extinguish the branch pipe made of a flexible material from the header position at the construction site. Each of the branch pipes is formed in advance by factory processing to a length corresponding to the dimensions to the terminal equipment, and one end of the branch pipe is directly connected to the header (3) via the one-touch joint. In Piping in an aqueous fire-extinguishing piping so as to communicatively connected to connector for connecting the ends with fire extinguishing terminal equipment, one-touch joint, a body portion projecting integrally formed from T tube, the body part that the projecting A spacer disposed on the outer peripheral portion with an insertion space having a predetermined dimension set based on the thickness of the branch pipe to be inserted as a reference, and an outer cylinder inserted into the outer periphery of the spacer and externally fitted to the main body portion A backup rubber is mounted between the spacer and the base end of the main body, and a stopper ring is mounted between the front end of the spacer and the outer cylinder. An O-ring is fitted on the outer peripheral surface of the portion, and the insertion space is configured such that a tapered guide is mounted so that the insertion space can be moved from the distal end side to the proximal end side. Then, from the disconnected state, It is characterized in that a connection state is established by inserting the tube wall portion of the branch pipe into the insertion space into the opening opening of the one-touch joint and pushing it together with the tapered guide .

The invention described in claim 2 is characterized in that the branch pipe in claim 1 is constituted by a polybutene pipe . Further, the invention described in claim 3 is characterized in that the connection tool connected to the other end of the branch pipe in claim 1 or 2 is a one-touch joint. Furthermore, the invention described in claim 4 is characterized in that the connection tool connected to the other end of the branch pipe in claim 1 or 2 is a fusion joint. Further, the invention described in claim 5 is characterized in that extinguishing terminal equipment in any one of claims 1 to 4 is sprinkler head.

  In the present invention described in claim 1, a plurality of T pipes are assembled coaxially with each other so as to be rotatable relative to each other, and the lead-out direction can be freely set around the same axis, and each lead-out port has a branch body as a joint body. Prepare a header that is integrally assembled with a one-touch joint that can be directly inserted and connected at one end of the pipe, and make the branch pipe made of flexible material from the header position at the construction site to the extinguishing terminal equipment Spaces for piping the branch pipes at the construction site because each length is formed in advance by factory processing and one end of this branch pipe is directly connected to the header via a one-touch joint. Even if it is narrow, branch pipes can be easily connected, and workability can be improved. Further, since the branch pipe is formed of a flexible material, it can be carried into the construction site in a state in which the branch pipe processed at the factory is wound, so that the transportation efficiency is also improved.

  FIG. 1 shows an embodiment of a water-based fire extinguishing pipe to which the present invention is applied, and FIG. 1 is a schematic perspective view. In this water-based fire extinguishing pipe, a header (3) is connected and fixed to a branch pipe (2) branched out from a fire-extinguishing water supply main pipe (1) laid in a building. The header (3) is assembled such that a plurality of T tubes (4) can be rotated relative to each other so that the direction of derivation can be freely set around the axis of the header (3).

  A quick connection joint (5) capable of quickly connecting the branch pipe (6) is incorporated in each outlet of the header (3). This quick connection joint (5) is composed of the one-touch joint (5a) shown in FIGS. 2 and 3, and this one-touch joint (5a) is formed by simply inserting one end of the branch pipe (6). The pipe (6) and the header (3) are configured to be connected in a watertight manner.

  The branch pipe (6) is formed of a polybutene pipe, which is a flexible resin pipe, and is previously cut into a predetermined length according to the piping construction drawing and processed into a predetermined shape. A connecting tool (8) to a sprinkler head (7) as a fire extinguishing terminal device is attached to the other end of the branch pipe (7). This connector (8) is integrated with the branch pipe (6) by heat fusion or electric fusion. In addition, as this connection tool (8), the socket (8a) with a screw and the elbow (8b) with a seat are used, and a sprinkler head (7) is directly or auxiliary to this connection tool (8). It is designed to be connected and fixed via a connecting pipe (10).

As shown in FIGS. 2 and 3, the one-touch joint (5a) has a main body portion (10) integrally formed from the T-tube (4) and an outer peripheral portion of the projecting main body portion (10). A spacer (12) arranged with an insertion space (11) of a predetermined dimension set based on the thickness of the polybutene tube to be inserted, and a body portion (10) inserted into the outer periphery of this spacer (12) An outer cylinder (13) that is externally fitted to the base, and a backup rubber (14) is mounted between the spacer (12) and the base end of the body portion (10), and the spacer (12 ) stopper ring (15 between the tip portion and the outer tube (13) of) GaSo Chakushitea is, and, O-ring on the outer circumferential surface of the body portion (10) (16) is fitted A tapered guide (17) is mounted in the insertion space (11) so as to be movable from the distal end side to the proximal end side.

  In the one-touch joint (5a) having the above-described configuration, the branch pipe (6) is inserted into the tip opening of the one-touch joint (5) from the non-connected state shown in FIGS. 2 (a) and 3 (a). By connecting the wall portion to the insertion space (11) and pushing it in with the tapered guide (17), the connection state shown in FIGS. 2 (b) and 3 (b) is obtained.

  In the water-based fire extinguishing pipe having the above-described configuration, a branch pipe (6) formed in advance to have a predetermined size and a predetermined shape by factory processing is used, and is piped in a narrow space such as the back of the ceiling. ) Is connected to the header (3) via the one-touch joint (5a), and the other end of the branch pipe is connected to the sprinkler head (7) via the connector (8). ing. In this case, the sprinkler head (7), which is a fire extinguishing terminal device, is fixed to a structure such as a ceiling in the indoor space, and its connecting part is relatively easy to operate from the indoor side. Connection can be made easily.

  On the other hand, for the header (3), the end of the branch pipe (6) is simply inserted linearly into the one-touch joint (5a) provided on the header (3). Connecting work can be easily performed. And since the branch pipe (6) is comprised with the raw material which has flexibility, the some dimensional error which arises in a construction site can be absorbed by the bending deformation of a branch pipe (6).

  In the above-described embodiment, the connector (8) is fused to the end (other end) of the branch pipe (6) on the fire extinguishing terminal device side, and the sprinkler head (7) is connected to the connector (8). It is configured to be connected directly or via an auxiliary connecting pipe (9), but as a connection tool (8), a pipe joint in which one end is a screw joint and the other end has the same structure as the one-touch joint is used. And you may comprise so that the other end of a branch pipe (6) may be inserted and fixed to a one-touch coupling.

  The present invention can be applied to piping for fire extinguishing water piped in the ceiling or wall of a building.

It is a schematic perspective view which shows one form of water-system fire extinguishing piping. FIG. 2A is a longitudinal sectional view before the branch pipe connection, and FIG. 2B is a longitudinal sectional view in the branch pipe connected state. It is a figure which shows the principal part of a one-touch coupling, Fig.3 (a) is a longitudinal cross-sectional view before branch pipe connection, FIG.3 (b) is a longitudinal cross-sectional view in a branch pipe connection state.

  DESCRIPTION OF SYMBOLS 1 ... Fire water supply main pipe, 3 ... Header, 5 ... Quick connection joint (5a ... One-touch joint), 6 ... Branch pipe, 7 ... Fire extinguishing terminal device (sprinkler head), 8 ... Connection tool.

Claims (5)

A header (3) is connected in communication with the fire-extinguishing water supply main pipe (1) piped in the piping space of the building, and the fire-extinguishing terminal equipment (7) arranged in the header (3) and the appropriate place in the building And a water-based fire extinguishing pipe connecting the pipes with a branch pipe (6),
A plurality of T pipes (4) are assembled so that they can rotate relative to each other on the same axis, and the derivation direction can be freely set around the same axis, and each outlet is directly connected to one end of the branch pipe (6) as a joint body. Prepare the header (3) that is assembled with the one-touch joint (5a) that can be inserted and connected to
Each branch pipe (6) made of flexible material is pre-formed by factory processing to a length corresponding to the dimension from the position of the header (3) to the fire extinguishing terminal equipment (7) at the construction site. One end of the branch pipe (6) is directly connected to the header (3) via the one-touch joint (5a), and the other end of the branch pipe (6) is connected to the fire extinguishing terminal device (7). in piping in water-based fire extinguishing piping so as to communicatively connected to connector (8),
The one-touch joint (5a) has a main body part (10) formed integrally protruding from the T pipe (4), and a wall thickness of the branch pipe (6) inserted into the outer peripheral part of the projecting main body part (10). A spacer (12) arranged with an insertion space (11) of a predetermined dimension set on the basis of the outer diameter, and an outer cylinder that is fitted on the outer periphery of the spacer (12) and is externally fitted to the body portion (10) (13), and a backup rubber (14) is mounted between the spacer (12) and the base end of the main body portion (10), and the tip of the spacer (12) and the outer cylinder ( 13) is provided with a stopper ring (15), and an O-ring (16) is fitted on the outer peripheral surface of the main body portion (10). The tapered guide (17) is mounted in such a manner that the insertion space (11) can be moved from the distal end side to the proximal end side. In the one-touch joint (5a), the one-touch joint (5 5) Opening the tip Piping method in water-based fire extinguishing piping, wherein the pipe wall portion of the branch pipe (6) is inserted into the insertion space (11) and inserted into the mouth portion together with the tapered guide (17) to be connected. . The piping method in the water-based fire extinguishing pipe according to claim 1 , wherein the branch pipe (6) is a polybutene pipe . The piping method in the water-based fire extinguishing pipe according to claim 1 or 2 , wherein the connector (8) connected to the other end of the branch pipe (6) is a one-touch joint. The piping method in the water-based fire extinguishing pipe according to claim 1 or 2 , wherein the connector (8) connected to the other end of the branch pipe (6) is a fusion joint. The terminal method for fire extinguishing (7) is a sprinkler head, The piping method in the water-system fire extinguishing piping of any one of Claims 1-4 .

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