KR101780894B1 - Flexible pipe assembly for sprinkler - Google Patents

Abstract

According to the present invention, the present invention relates to a flexible pipe assembly installed between a main pipe (10) made of a CPVC material into which firefighting water is introduced and a reducer elbow (20) mounted with a sprinkler head. The flexible pipe assembly comprises: a flexible pipe (110) which includes a wrinkled part (111) formed in the center thereof to reduce an applied stress and includes a partition wall (112) formed at one end to extend outward along the circumference in a circular shape; a flare nut (120) mounted at the other end of the flexible pipe (110) to fasten the reducer elbow (20) with the flexible pipe (110); a socket part (130) made of a CPVC material and mounted at one end of the flexible pipe (110) in a form of surrounding the partition wall (112) to fasten the main pipe (10) with the flexible pipe (110); a first packing (140) which is mounted on the circumference of the flexible pipe (110) to adhere to one side of the partition wall (112) and surrounds the socket part (130) and flexible pipe (110); and a second packing (150) mounted on the circumference of the flexible tube (110) in a form of adhering to the other side of the partition wall (112) to seal the socket part (130) and flexible pipe (110). Therefore, the flexible pipe assembly for a sprinkler can remarkably increase workability, economic feasibility, and durability.

Description

{FLEXIBLE PIPE ASSEMBLY FOR SPRINKLER}

The present invention relates to a stretch piping assembly for a sprinkler, and more particularly, to a stretch piping assembly for a sprinkler, and more particularly, to a stretch piping assembly for a sprinkler, which comprises a CPVC main pipe through which fire water enters, Piping assembly.

Generally, in the building, fire fighting equipment for fast fire in case of fire is mandatory, and as a part of such fire fighting equipment, a sprinkler system for spraying fire water in the room is installed on the ceiling.

The sprinkler system includes a water source in which fire water is stored, a sprinkler head in which a plurality of water sprinkler heads are disposed at a predetermined interval in a spaced relation to each other and spray fire water automatically when a fire occurs, A main pipe branched from the main pipe, and a stretch pipe assembly connecting the main pipe and the sprinkler head.

In recent years, a pipe made of a metal material has been replaced with a pipe made of CPVC in consideration of workability, economy, and durability. However, in the case of the above-mentioned expansion / contraction pipe assembly, there is no means for sealing the high-pressure fire- Of the present invention.

Therefore, the working time for installing the expansion and contraction pipe assembly on the ceiling is prolonged, and corrosion is inevitably generated for a long period of time, resulting in reduced durability and troublesome construction change and replacement work.

Registration Practical Utility Model No. 20-0260590 (December 29, 2001), a flexible joint structure of a sprinkler

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of sealing a high-pressure fire water effectively by using a piping of CPVC material, thereby greatly improving workability, economy and durability And to provide a stretch piping assembly for a sprinkler.

In order to accomplish the above object, according to the present invention, there is provided a telescopic pipe assembly for a sprinkler, which is installed between a CPVC main pipe 10 into which fire water flows and a resusa elbow 20 to which a sprinkler head is mounted, An expansion pipe 110 having a corrugated portion 111 formed at the center thereof to cancel a stress applied thereto and having a partition wall portion 112 extending outwardly along a circumference at an end thereof; A flare nut 120 mounted on the other end of the expansion pipe 110 to fasten the reduction pipe 110 and the reducer elbow 20; A CPVC socket part 130 mounted on one end of the extension pipe 110 to surround the partition part 112 and to fasten the main pipe 10 and the extension pipe 110; A first packing (140) mounted around the extension pipe (110) in a state of being closely attached to one side of the partition part (112) and sealing between the socket part (130) and the extension pipe (110); And a second packing 150 mounted on the periphery of the extension pipe 110 in a state of being closely attached to the other side of the partition wall portion 112 to seal between the socket portion 130 and the expansion pipe 110 do.

An insulation ring 160 is disposed around the expansion pipe 110 and is disposed at a portion where the outer surface of the expansion pipe 110 and the inner surface of the socket unit 130 are in contact with each other to prevent corrosion between dissimilar materials. ; ≪ / RTI >

A nut partition wall 113 is formed at the other end of the expansion pipe 110 and extends outwardly in a circumferential direction. The flare nut 120 is in close contact with one side of the nut partition wall 113 A nut packing 121 mounted on the periphery of the expansion and contraction pipe 110 to seal the space between the flare nut 120 and the expansion and contraction pipe 110 and a nut packing 121 formed on the other side of the nut partition wall 113 And a nut insulator ring 122 disposed at a portion where the outer surface of the expansion pipe 110 and the inner surface of the flare nut 120 are in contact with each other to prevent corrosion between dissimilar materials.

The socket 130 may include a first socket 130 mounted on one end of the expansion pipe 110 to surround the partition 112, the first packing 140 and the second packing 150, And a second socket 132 having one end mounted on the main pipe 10 and the other end being fastened to an end of the first socket 131, An extension portion 133 extending to a predetermined length is formed toward the second packing 150 so that the extension portion 133 presses the second packing 150 laterally as it is fastened to the first socket 131 .

In addition, a male screw thread is formed on the outer circumferential surface of the extended portion 133, and a female screw thread which is engaged with the male screw thread is formed around the end of the first socket 131, 131 and the second socket 132 can be fastened together.

In order to accomplish the above object, according to the present invention, there is provided a telescopic pipe assembly for a sprinkler, comprising a main pipe (10) made of CPVC to which fire water flows, and a resilient pipe assembly An expansion pipe 110 having a corrugated portion 111 formed at a central portion thereof to cancel a stress applied thereto and having a partition wall portion 112 extending outwardly along a circumference at an end thereof in an annular shape; A flare nut 120 mounted on the other end of the expansion pipe 110 to fasten the reduction pipe 110 and the reducer elbow 20; The main pipe 10 and the extension pipe 110 are mounted on one end of the expansion pipe 110 so as to surround the partition wall 112 and the outer surface of the expansion pipe 110 and the main pipe 10) having a first packing groove (134) and a second packing groove (135) formed on both sides of a portion where the inner surface of the socket (130) contacts with the inner surface of the socket (130); The first and second packing grooves 134 and 135 are inserted into the first packing groove 134 in a state of being closely contacted with one side of the partition wall portion 112 and are installed around the extension pipe 110, A first packing (140) sealing; And a second packing 150 inserted into the second packing groove 135 to seal between the socket part 130 and the expansion and contraction pipe 110.

The insulative ring 160 may be inserted into the second packing groove 135 to be in close contact with one side of the second packing 150.

The inner diameter of the socket unit 130 is formed with an enlarged portion 136 having a larger diameter so that the main pipe 10 can be fastened to the socket portion 130. The partition wall portion 112 is formed on the extension pipe 110, The other end can be pressed in the lateral direction by the end of the main pipe 10 which is disposed at the boundary position where the main pipe 136 starts and inserted into the inner diameter of the socket part 130. [

According to the expansion and contraction pipe assembly for a sprinkler according to the present invention, even when a pipe made of CPVC is used, it is possible to effectively seal the high-pressure fire water, thereby greatly improving workability, economy and durability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing the construction of a telescopic pipe assembly for a sprinkler according to a preferred embodiment of the present invention,
2 is a side cross-sectional view showing the configuration of an insulating ring according to a preferred embodiment of the present invention,
3 is a side cross-sectional view showing another embodiment of the socket portion of the expansion and contraction pipe assembly for a sprinkler according to the preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The expansion and contraction pipe assembly for a sprinkler according to the preferred embodiment of the present invention is installed between a main pipe 10 of a CPVC material to which fire water flows and a reeder elbow 20 to which a sprinkler head is mounted to transfer the inflowing fire water to a sprinkler head A flare nut 120, a socket portion 130, a first packing 140, and a second packing 150, as shown in FIGS. 1 and 2, do.

First, the expansion and contraction pipe 110 is made of a refractory structure, and is a stainless steel pipe body that can effectively fix piping assembly to a fixed object such as a ceiling wall by canceling the convenience of piping work and the stress generated in the pipe, A corrugated portion 111 is formed at the center portion to cancel a stress applied while being refracted. At one end portion, a partition wall portion 112 extending outward along the circumference of the annular shape is formed.

The flare nut 120 is attached to the other end of the extension pipe 110 and is made of iron or brass material as a connecting means for connecting the reed shaft 20 and the extension pipe 110.

The socket unit 130 is connected to one end of the extension pipe 110 to connect the main pipe 10 and the expansion and contraction pipe 110. The socket unit 130 is connected to the extension pipe 110 110 and made of the same CPVC material as the main pipe 10, so that it can be adhered to the main pipe 10 in a water-tight manner with an adhesive such as a cement.

1, the first packing 140 is mounted on the periphery of the extension pipe 110 in a state of being closely attached to one side of the partition wall portion 112 and is disposed between the socket portion 130 and the extension pipe 110 And the second packing 150 is attached to the other side of the partition 112 and is mounted around the expansion and contraction pipe 110 to seal the socket 130 and the expansion and contraction pipe 110, .

As shown in FIG. 2, the outer surface of the expansion and contraction pipe 110 and the inner surface of the socket 130 are disposed around the expansion and contraction pipe 110, and are made of stainless steel, CPVC, An insulating ring 160 is mounted to prevent corrosion of the liver. The insulating ring 160 is mounted in close contact with the first packing 140 to form a gap between the extension pipe 110 and the socket part 130 together with the first and second packing parts 140 and 150 It is possible to carry out functions to seal water tightly.

As shown in the drawing, a nut partition wall 113 is formed at the other end of the expansion and contraction pipe 110 and extends outwardly along the circumference of the ring like the partition wall 112, A nut packing 121 mounted on the periphery of the expansion pipe 110 to tightly seal the space between the flare nut 120 and the expansion and contraction pipe 110 in the form of being closely attached to one side of the nut partition wall 113, And is disposed at a position where the outer surface of the expansion pipe 110 and the inner surface of the flare nut 120 are in contact with each other at the other side of the nut partition wall portion 113 to prevent corrosion between different materials such as iron and brass materials and stainless materials And a nut insulator ring 122 for preventing the insulator 122 from being damaged.

The nut insulator ring 122 is mounted on the one side of the nut packing 121 while preventing corrosion of dissimilar materials in the same manner as the insulator ring 160. The nut insulator ring 122 is connected to the extension pipe 110 together with the nut packing 121, It is possible to perform the function of watertight sealing between the flare nuts 120 in parallel.

As described above, since the sealing means such as the packing and the insulating ring are separately arranged in the two spaces separated by the partition wall portions, compared with the structure in which only the sealing means is arranged without the configuration of the partition wall portions, It is possible to enlarge the sealing area at the same time as the route is extended. Therefore, even when the piping made of the CPVC material is used, the water can be watertightly sealed without fear of leakage of the fire water to the outside.

The socket 130 includes a first socket 131 mounted on one end of the extension pipe 110 to surround the partition wall 112, the first packing 140 and the second packing 150, And a second socket 132, one end of which is mounted on the main pipe 10 and the other end is fastened to an end of the first socket 131.

At this time, an extension part 133 extending to a predetermined length toward the second packing 150 is formed around one side of the second socket 132, and the extension 133 is fastened to the first socket 131, To press the second packing 150 laterally. The sealing force can be further increased by pressing the second packing 150, which functions as a hermetic seal, with a strong force through the lateral pressure applying structure.

A male screw thread is formed on the outer surface of the extended portion 133 and a female screw thread is formed around the end of the first socket 131 to engage with the male thread. And the second socket 132 can be fastened to each other.

By the rotational coupling, the second packing 150 can be pressed with a stronger force and the pressurized state can be effectively fixed, so that the sealing force can be further increased.

Meanwhile, the socket 130 may have a single body structure other than the structure in which the first socket 131 and the second socket 132 are assembled.

3, the socket unit 130 is mounted on one end of the extension pipe 110 so as to surround the partition wall 112 and is connected to the main pipe 10 and the extension pipe 110 The first packing 140 and the second packing 150 are formed on both sides of a portion where the outer surface of the expansion pipe 110 and the inner surface of the main pipe 10 are in contact with each other.

The first packing 140 is inserted into the first packing groove 134 in a state of being closely contacted with one side of the partition wall portion 112 and is mounted on the periphery of the extension pipe 110, And the expansion and contraction pipe 110 is sealed. The second packing 150 is inserted into the second packing groove 135 to seal the space between the socket 130 and the expansion and contraction pipe 110.

In addition, the insulating ring 160 is inserted into the second packing groove 135 so as to be in close contact with one side of the second packing 150.

3, the inner diameter of the socket unit 130 is formed with an enlarged portion 136 having an enlarged diameter so that the main pipe 10 can be fastened to the inner circumference of the socket unit 130, Is disposed at a boundary position where the extension portion 136 starts on the extension pipe 110 so that the other end is pressed against the end portion of the main pipe 10 inserted into the inner diameter of the socket portion 130. The sealing force can be further increased by compressing the first packing 140 by pressing the partition wall 112 having a sealing function through the lateral pressing structure with a strong force.

The construction and function of the expansion and contraction pipe assembly as described above can provide a structure capable of effectively sealing the high-pressure fire water even in the case of using a pipe made of PVC, so that workability, economy and durability can be greatly increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

110 ... extension / contraction pipe 112 ... partition wall portion
113 ... Nut partition wall portion 120 ... Flare nut
130 ... socket portion 131 ... first socket
132 ... second socket 140 ... first packing
150 ... second packing 160 ... insulating ring

Claims (7)

(EN) A piping assembly for a piping system in which a main pipe (10) made of CPVC into which a fire - retardant water flows and a resusa elbow (20) on which a sprinkler head is mounted is installed. The wrinkle part (111) is formed at the center part, (110) having a partition wall portion (112) extending outwardly along a circumference of the annular shape; A flare nut 120 mounted on the other end of the expansion pipe 110 to fasten the reduction pipe 110 and the reducer elbow 20; A CPVC socket part 130 mounted on one end of the extension pipe 110 to surround the partition part 112 and to fasten the main pipe 10 and the extension pipe 110; A first packing (140) mounted around the extension pipe (110) in a state of being closely attached to one side of the partition part (112) and sealing between the socket part (130) and the extension pipe (110); And a second packing 150 mounted on the periphery of the extension pipe 110 in a state of being closely attached to the other side of the partition wall portion 112 to seal between the socket portion 130 and the expansion pipe 110 However,
The socket 130 includes a first socket 131 that is mounted on one end of the expansion pipe 110 and surrounds the partition 112, the first packing 140, and the second packing 150, And a second socket 132, one end of which is mounted on the main pipe 10 and the other end is fastened to an end of the first socket 131,
An extension part 133 extending to a predetermined length toward the second packing 150 is formed at the fastening end of the second socket 132. The fastening part 133 is fastened to the first socket 131, Presses the second packing 150 laterally,
A male thread is formed on the outer surface of the extended portion 133 and a female thread is formed around the end of the first socket 131 to be engaged with the male thread. And the second sockets (132) are fastened to each other.
The method according to claim 1,
An insulation ring 160 mounted around the extension pipe 110 and arranged at a portion where the outer surface of the expansion pipe 110 and the inner surface of the socket portion 130 are in contact with each other to prevent corrosion between dissimilar materials; Further comprising: an expansion joint for the sprinkler.
The method according to claim 1,
A nut partition wall 113 is formed at the other end of the expansion pipe 110 and extends outward along the circumference of the annular shape.
The flare nut (120)
A nut packing 121 mounted on the periphery of the expansion pipe 110 to seal the space between the flare nut 120 and the expansion and contraction pipe 110 in a state of being closely attached to one side of the nut partition wall 113,
And a nut insulator ring (120) disposed at a portion where the outer surface of the expansion pipe (110) and the inner surface of the flare nut (120) are in contact with each other at the other side of the nut partition wall (113) (122). ≪ / RTI >
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