KR200181307Y1 - A reducer for flare steel piping - Google Patents

Abstract

The present invention relates to a corrugated pipe fitting, the sealing means of the sealing packing (20) and the release shield ring (30) is easily pre-tightened to the packing inclined packing pressing surface 15 inside the pipe socket (10) in the form of bolts By means of the clamping pressure of the socket engaging portion 41 of the centrally projected cap nut 40, these sealing means are simply pressed and fixed to the coupling gap between the packing crimping surface 15 of the pipe socket and the connection end of the metal corrugated pipe 50. By making it possible to simplify the assembly structure of the components and structurally increase the airtightness of the coupling portion, in order to achieve this purpose and effect, the screw is formed on the outside of the cap coupling portion 13 of the pipe socket 10 cap Inside the coupling part 13, the packing pressing surface 15 is curved so that the sealing packing 20 can be inserted into and close the inside, and the intermediate cut crimp reinforcing ring 25 is pressed into the inside of the sealing packing 20. And the closed and closed surface 22 is curved on the outside of the sealed packing 20. While the curved sealing surface 22 is formed opposite the inclined sealing surface (22) formed at an angle, the shielding closing of the separation shield ring (30) so as to surround the closing sealing surface 22 of the sealed packing to be pressed forward A packing pressing surface 32 is formed inside the surface 32, and the cap coupling portion 13 of the pipe socket 13 is pressed forward while pressing the sealing packing 20 and the release shield ring 30 into which the metal wrinkle pipe 50 is inserted. The socket coupling portion 41 which is screwed on the outside so as to be bolted to the outside protrudes toward the center of the cap nut 40, and the close contact guide groove 42 is formed in the middle portion.

Description

Corrugated pipe fittings {A reducer for flare steel piping}

The present invention mainly relates to corrugated pipe fittings for hermetically connecting metal pleated pipes used for connecting pipes for heating water supply with external supply pipes, and more specifically, sealing packings and release shielding rings, which are sealing means, have curved inclined packings inside the pipe sockets. Easily pre-tightened to the crimping surface, the pressurizing pressure of the socket coupling part of the cap nut protruded in the form of a bolt allows these sealing means to be simply crimped to the gap between the packing crimping surface of the pipe socket and the connection end of the metal corrugated pipe. The present invention relates to a corrugated pipe fitting for a water supply pipe which can structurally increase the airtightness of the coupling portion while simplifying the assembly structure of the component.

In general, with the radical development of science and technology and economic growth, more convenient functions and conveniences are required throughout the consciousness in the living environment.In particular, in the living environment, living water or fuel in living spaces such as high-rise buildings or houses and apartments The connection relationship between the pipe and the direction to extend the length of the pipe that can safely supply gas from a remote source to the corresponding place of use has emerged as an important infrastructure problem.

In other words, in connecting and diverting the supply pipe from the outside and the branch pipe to the place, leakage and leakage of the contents passing through the pipes are ensured by keeping the joints between these pipes from the internal pressure or the external shock. There is a need for pipe fittings for supplying fluids and gases that can be prevented.

On the other hand, Figure 5 and Figure 6 shows the separated state of the structure and the inner state of the coupling state of the corrugated pipe fitting according to the prior art, is a stainless steel material with good bendability and corrosion resistance is used for hot water pipes and gas pipes Insert and fasten the connecting end of the metal pleated pipe 150 to the pipe socket 140 of the pleated pipe fitting, insert the sealing means 120, 130 in the middle and press-fit the cap nut 110 by pressing to fix the metal pleated pipe 150 ) Is held tightly in the corrugated pipe fitting.

That is, the conventional corrugated pipe fittings for hermetically connecting the metal pleated pipe 150 to an external supply pipe (not shown) are inserted into the pipe socket 140 and the pipe socket 140 into which the metal pleated pipe 150 is inserted and fixed. It is composed of a cap nut 110 which is a fastening and fixing means together with a sealing packing 130 and a snap washer 120 to seal the metal wrinkle pipe 150, the pipe socket 140 is fastening tool such as a pipe wrench is fastened Supply pipe coupling portion 143 is formed protruding in one direction around the tool fastening portion 142 is coupled to the outer supply pipe, and in the opposite direction, the sealing packing 130 is a sealing means as the metal wrinkle pipe 150 is inserted And cap coupling portion 141 to which the snap washer 120 is fitted was formed.

The sealing packing 130 which is fitted into the corrugated pipe inserting surface 144 formed through the cap coupling portion 141 of the pipe socket 140 is tightly compressed by the cap nut 110 and the corrugated pipe inserting surface 144. In order to seal the gap with the metal pleated pipe 150, a stepped compression groove 132 is formed between the insertion end 133 and the compression end 131 with a soft silicone material, and a plastic snap The washer 120 is cut in the middle so that the gap between the cap nut 110 and the metal corrugated pipe 150 can be kept airtight while being changed in shape according to the fastening pressure of the cap nut 110, and the opposite side of the inclined compression slope 121 is curved. In the direction, the snap protrusion 122 of the metric screw structure, which is retracted toward the center, is formed to protrude, and the end step 111 is formed outside the cap nut 110 so that the snap washer 120 is not separated from the inner peripheral surface. The cap screw portion 14 of the pipe socket 140 has a packing crimping surface 112. It is screwed to fasten to 1).

The conventional corrugated pipe fitting is inserted into the cap screw portion 141 of the pipe socket 140 while the snap washer 120 and the sealing packing 130 are fitted to the joint end of the metal wrinkle pipe 150. When tightening and tightening 110 as a separate tightening tool, the packing pressing surface 112 of the cap nut is screwed into the cap screw portion 141 of the pipe socket while inserting the corrugated pipe of the metal corrugated pipe 150 and the pipe socket The gap between the surface 144 and the packing crimping surface 112 of the cap nut can be sealed.

However, the sealing packing 130 and the snap washer 120, which is inserted and pressed together with the cap nut 110 to keep the joint end of the metal corrugated pipe 150 inserted into the pipe socket 140 of the corrugated pipe fitting, is FIG. 6. As shown in the cross-sectional structure of the coupling state of the closed state, the sealed packing 130 is precisely pressed toward the joint end of the joint crimping surface 112 and the cap nut 110 of the metal socket 150 and the pipe socket. In this case, the packing was unnecessarily filled toward the space of the packing pressing surface 112 of the cap nut above the snap washer 120.

Therefore, the airtight packing 130 which keeps the gap between the metal end of the corrugated pipe 150 and the corrugated pipe fitting is not structurally stable and cannot be squeezed and fixed to the metal corrugated pipe 150 so that the airtight state can easily be poor. In addition, the sealing packing 130 and the snap washer 120 is fastened to the pipe socket 140 in the state in which the pipe socket 140 is fastened to the joint end of the metal corrugated pipe 150, and as a cap nut 110. There was also the inconvenience of clamping and fixing.

Therefore, the present invention was devised to solve the structural disadvantages of the pipe fittings so far, and the sealing packing and the release shielding ring, which are sealing means, are easily pre-tightened with a curved inclined packing pressing surface inside the pipe socket, and the bolt The connecting end of the metal corrugated pipe can be simply pressed and fixed to the coupling gap between the packing crimping surface of the pipe socket and the connecting end of the metal corrugated pipe by the clamping pressure of the socket coupling part of the cap nut protruded from the center. Its purpose is to provide a corrugated pipe fitting for gas supply which can be kept tight.

1 is a perspective view of a crimped pipe fitting separated state according to the present invention.

Figure 2 is a cross-sectional view of the crimped pipe fitting separated state according to the present invention.

Figure 3 is a cross-sectional view of the intermediate assembly crimped fittings according to the present invention.

Figure 4 is a cross-sectional view of the crimped fittings joint state according to the present invention.

Figure 5 is a perspective view of the crimped pipe fitting separated state according to the prior art.

Figure 6 is a cross-sectional view of the crimp fitting fitting state according to the prior art.

Explanation of symbols on the main parts of the drawings

10: pipe socket 11: supply pipe coupling portion

12: tool fastening part 13: cap coupling part

14: insert guide end 15: packing crimping surface

20: sealed packing 21: insertion slope

22: closed sealing surface 23: ring coupling groove

25: crimp reinforcement ring 30: release shield ring

31: compression sealing surface 32: shielding finish surface

40: cap nut 41: socket coupling portion

42: close contact guide 43: tool fastening

50: metal corrugated pipe

As a technical means for achieving the above object is the present invention in the corrugated pipe fitting for gas supply for sealingly connecting a metal corrugated pipe of stainless steel material used as a connecting pipe for water supply pipe with an external supply pipe with excellent bendability and corrosion resistance, The packing crimping surface is formed in a round shape so that the sealing seal is inserted into the cap coupling part and the inside of the cap coupling part is screwed on the outer side of the cap coupling part of the copper alloy material made of copper alloy, and the crimped reinforcement ring of the metal material cut in the middle is soft. It is pressed into the inside of the sealed packing, which is a rubber material, and the outside of the sealed packing is bent into the packing pressing surface of the pipe socket while the closed sealing surface is bent in a round curved shape so as to be tightly fixed to the opposite side of the closing sealing surface. While the insert inclined surface is formed, it can be crimped forward by wrapping the closed sealing surface of the sealed packing. The packing pressing surface is formed in a round shape inside the shielding closing surface of the release shield ring, which is a hard Teflon material, and is bolted to the cap coupling portion of the pipe socket while forward-compressing the sealed packing and the release shield ring having the metal corrugated pipe inserted therein. It is characterized in that the induction groove is grooved so that the socket coupling portion screwed outwardly protrudes toward the center of the cap nut made of copper alloy or plastic, and the cap coupling portion of the pipe socket is completely in contact with the intermediate portion toward the tool coupling portion. .

Hereinafter, described in detail preferred embodiments of the present invention by the accompanying drawings as follows.

Figure 1 shows a separate state external structure of the pleated pipe fitting for water supply pipe according to the present invention, Figure 2 shows a cross-sectional view of the internal structure of the pleated pipe fitting according to the present invention, and Figure 3 is a corrugated pipe of the present invention An intermediate assembly state in which the cap nut 40 is fastened and pressed in a state where the sealing packing 20 is pre-tightened together with the release shield ring 30 by the packing pressing surface 15 of the pipe socket 10 constituting the fitting. One, and Figure 4 shows a state in which the metal corrugated pipe 50 is hermetically coupled to the pleated pipe fitting of the present invention.

As shown in the figure, the pleated pipe fitting of the present invention is a capping of the pipe socket 10 with the sealing means (20) and (30) together with the pipe socket (10) and the metal wrinkle pipe (50) into which the metal wrinkle pipe (50) is inserted and fixed. Including the cap nut 40 to be fixed to the coupling portion 13 to improve the structure of the sealing means and to simplify the fastening structure between the pipe socket 10 and the cap nut 40, the connection end of the metal corrugated pipe 50 The cap coupling portion 13 of the pipe socket is nut-coupled to the socket coupling portion 41 of the cap nut which is screwed on the outside so that the cap coupling portion 13 of the pipe socket can be securely sealed structurally. It is configured to be bolted to the cap coupling portion 13 of the threaded pipe socket, the sealing means by the end of the socket coupling portion 41 of the cap nut bolted into the cap coupling portion 13 of the pipe socket Soft sealed packing 20 and relatively hard release shield ring 30 are structurally more reliable As to the contact pressure so that it can be fixed to the compression coupling gap.

The pipe socket 10 is a copper alloy with a supply pipe coupling part 11 screwed on the outside so as to be fastened to an external supply pipe (not shown in the drawing) centering on a tool fastening part 12 to which a fastening mechanism such as a pipe wrench is fastened. Alternatively, the metal corrugated pipe 50 of the stainless material is inserted and fixed, and the socket coupling portion 51 of the cap nut 50 is formed as a cap coupling portion 13 screwed inside so that the bolt coupling can be performed. Part 13 is a curved surface of the inner compression packing surface 15 is rounded so that the sealing seal 20 can be precisely hermetically sealed while being guided and inserted according to the clamping pressure of the cap nut 40 together with the release shield ring 30 It is formed to be inclined, the outer end is inclined bent at an angle to the insertion guide end 14 for guiding the guide so that the sealing seal 20, which is a sealing means can be accurately inserted.

In addition, the sealing packing 20 formed of a butyl rubber material having excellent heat resistance and acid resistance so as to be crimped and fixed to the connecting end of the metal corrugated pipe 50 by a sealing means is structurally accurate in the packing crimping surface 15 of the pipe socket. The inclined sealing surface 21 is roundly inclined so that the guide insert can be inserted, and the opposite closing sealing surface 22 can be stably folded by the release shield ring 30 formed of a Teflon material having excellent heat resistance and electrical insulation. The curved surface is formed at a sharp inclination angle than that of the pressing surface 15.

In addition, the hermetic packing 20 has a ring coupling groove 23 is formed in the inner side of the inclined surface 21, the groove is formed in the inner side of the connection end of the metal corrugated pipe 50, evenly crimped fixedly in a certain form, the metal corrugated pipe 50 ), The pressing reinforcing ring 25 made of a metal material to reinforce the shape so as to increase the adhesion strength is pressed, wherein the pressing reinforcing ring 25 is cut inclined at an angle at an intermediate angle and inserted into the sealed packing (20). The metal corrugated pipe 50 can be prevented from falling back after insertion.

In addition, the release shield ring 30 for inducing movement toward the packing pressing surface 15 of the pipe socket 10 while holding the closed sealing surface 22 of the hermetic packing 20 stably, is soft as a hard Teflon material Ring seal 20 is a little larger than the outer diameter width of the closing sealing surface 22 of the sealing seal 20 so that the guide seal can be fixed without being guided out of the packing pressing surface 15 of the pipe socket 10 Is formed.

In addition, the cap nut 40 made of copper alloy or plastic material such as brass is a straight bidirectional crimping means, and the sealed packing 20 is inserted into the sealed packing 20 and the release shield ring 30. 20) and the outer diameter of the socket engaging portion 41 is smaller than the tool fastening portion 43 so as to be bolted to the cap coupling portion 13 of the pipe socket 10 at the same time forward compression The tool fastening part 43 is screwed on the outside while protruding forward in width, and the end of the cap coupling part 13 of the pipe socket 10, which is nut-coupled, can be fastened and fixed while being completely in close contact with the tool fastening part 43. A close contact guide groove 42 is formed in the bent portion of the side).

The corrugated pipe fitting for the water supply pipe configured as described above has a relatively sealed packing 20 with a soft sealing packing 20 into the cap coupling portion 13 of the pipe socket 10 formed in the longitudinal direction while the packing pressing surface 15 is curved in a round shape. In the state in which the rigid release shield ring 40 is fastened to insert the connecting end of the metal corrugated pipe 50 made of a metal material between them, and then the socket coupling portion 41 of the cap nut formed on the outside is screwed on the inside When tightened by tightening and rotating into the cap coupling portion 13 of the pipe socket, a relatively hard release shield ring 30 and a soft sealing means 20 which is a soft sealing means by the fastening pressure of the cap nut 40 is It is pressurized while being guided to the inner packing pressing surface 15 through the insertion guide end 14 of the outer end of the pipe socket 10.

Therefore, while the socket coupling portion 41 of the cap nut 40 is rotated into the cap coupling portion 13 of the tube socket 10, the tool coupling portion 43 of the cap nut 40 is the cap of the tube socket 10. When the fastening is fixed to the close position reached to the engaging portion 13, the sealing packing 20 which is guided and guided to the release shield ring 30 is pressed by the packing pressing surface 15 and the metal wrinkle pipe of the pipe socket 10 (50) It can be fixed tightly and precisely and evenly inserted into the assembly gap with the outer surface, consequently the pipe socket (10) and cap nut (40) constituting the connection end of the corrugated pipe fittings It can be simply fixed in a clean crimp form to the gap between them.

According to the corrugated pipe fitting for water supply pipe according to the present invention described above, the socket coupling portion of the cap nut for crimping and fixing the metal corrugated pipe having a curved concavo-convex structure in a wave wave shape with a sealing means and bolted to the cap coupling portion of the pipe socket At the same time, the cap coupling part of the pipe socket is nut structured against the socket coupling part of the cap nut, which simplifies the overall configuration together with the sealing means, while the sealing means closes the coupling gap between the metal pleated pipe and the pipe socket by direct clamping pressure of the socket coupling part of the cap nut. Structural evenly compresses and secures airtightness, and as a result, it is possible to obtain the effect of improving the airtightness of the joint while simplifying the structure to facilitate the production of the product.

Claims (1)

In the corrugated pipe fitting for the water supply pipe for sealingly connecting the metal corrugated pipe made of stainless steel, which is used as the gas supply connecting pipe with the external supply pipe, because of excellent bendability and corrosion resistance, The packing crimping surface 15 is rounded so that the sealing packing 20 can be inserted into the cap coupling portion 13 and the inner side of the cap coupling portion 13 while screwing the outer side of the cap coupling portion 13 made of copper alloy. Curved, press-cut reinforcing ring of the intermediate cut metal material 25 is pressed into the inner side of the sealed packing 20 of the soft rubber material and the packing pressing surface 15 of the pipe socket on the outer side of the sealed packing 20 While the closing sealing surface 22 is bent in a round shape so as to be in close contact with the insertion guide, an inclined sealing surface 21 of an angle is formed on the opposite side of the closing sealing surface, while the closing sealing surface 22 of the sealed packing is formed. These sealed packings are formed in a circular curved surface on the inside of the shielding closing surface 32 of the release shield ring 30, which is a hard Teflon material, so as to be wrapped and pressed forward, and the metal corrugated pipe 50 is inserted therein. Pipe socket while pressing forward (20) and release shield ring (30) The socket-coupling portion 41 screwed outward so as to be bolted with respect to the cap coupling portion 13 is projected forward to the center of the cap nut 40 made of copper alloy or plastic, and the intermediate portion toward the tool fastening portion 43 Gas supply corrugated pipe fittings, characterized in that the induction groove 42 is formed in the groove so that the cap coupling portion 13 of the pipe socket can be completely in close contact.