KR200187873Y1 - A reducer for flare steel piping - Google Patents

Abstract

The present invention relates to a corrugated pipe fitting for gas piping for sealingly connecting a metal corrugated pipe made of stainless steel used for gas piping with an external supply pipe, and the pipe socket 10 has a metal nut pipe 50 in close contact with a nut coupling portion 14. The packing pressing groove 13 has a curved groove so that the sealing seal 20 can be in surface contact compression sealing on the inner surface, and the sealing seal 20 has a pipe socket 10 at the opposite end of the inclined insert guide surface 22. Airtight holding jaw 24 is protruded so that the end of the close nut coupling portion 14 of the close contact can be crimped and the metal wrinkle pipe 50 is caught close to the inside of the close contact nut coupling portion 14 The sealing protrusions 25 are in close contact with each other, and the insulating fixing tube 30 has the packing crimping jaw 33 protruding from the front surface thereof so as to be in surface contact with the airtight holding jaw 24 of the sealing packing 20. Corrugated pipe pressure so that the metal corrugated pipe 50 can be inserted closely While the end 35 is protruded, the close nut 40 has an inner portion of the socket coupling part 43 that is nut-fastened to the close nut coupling part 14 of the pipe socket 10 together with the metal wrinkle pipe 50. Insulating fixing tube 30 is in close contact with the insulating fixing tube 30 while advancing to the insulating fixing tube contact surface 44 so that the airtightness is kept in close contact with the insulating fixing tube 30 with the sealing packing 20 and the metal wrinkle tube 50 interposed therebetween. Corrugated pipe fittings for gas pipes, characterized in that configured so as to keep the connecting end 51 of the coupling end of the metal corrugated pipe 50 is fastened into the socket (10).

Description

Corrugated pipe fitting for gas piping {A reducer for flare steel piping}

The present invention relates to a corrugated pipe fitting for sealingly connecting a metal corrugated pipe made of stainless steel to an external supply pipe, which is mainly used for gas piping. More specifically, the connection end of the metal corrugated pipe inserted into the close contact nut of the pipe socket is substantially The assembly structure of the component parts is also related to the crimped pipe fittings for gas pipes, which can be secured structurally and firmly secured to the jointed state of the metal corrugated pipe while being precisely compressed and tightly inserted into the coupling gap.

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 fluid and gas piping that can be prevented.

On the other hand, Figure 4 shows the internal structure of the corrugated pipe fittings according to the prior art, the bendability and excellent corrosion resistance of the aluminum alloy pipe 150 is mainly used for gas piping as an aluminum alloy material excellent protection tube ( 160 is inserted into the pipe socket 110 of the pleated pipe fitting, and the cap nut 110 is finally fastened by inserting the insulating ring 130, which is an insulating means, with the sealing packing 120 which is a direct sealing means in the middle. By pressing and fixing by pressing, the connecting end 152 of the metal pleated pipe 150 is fixedly coupled while being hermetically maintained in the pleated pipe fitting.

That is, the pipe joint 110 of the corrugated pipe fitting that is airtightly maintained while the metal wrinkle pipe 150 is inserted and compressed directly, the coupling gap between the connection end portion 152 of the metal wrinkle pipe and the supply pipe coupling portion 112 of the pipe socket is insulated The airtight sealing material is first insulated while being insulated with an insulating ring 130 of Teflon material, and a sealing packing 120 made of rubber material is a substantially airtight means. (150) While being compressed between the insulating protective tube 160 on the outside is kept airtight.

However, the connecting end 152 of the metal corrugated pipe 150 inserted into the pipe socket 110 of the corrugated pipe fitting is a pipe socket 110 and the cap nut, which are corrugated pipe fittings, by the insulating ring 130 and the sealing packing 120. There is no problem in the insulation structure with 140, but the connection end portion 152 of the supply pipe coupling portion 112 and the metal corrugated pipe 150 of the pipe socket 110 is formed of a relatively hard Teflon material is formed a substantial assembly gap. Since the airtight sealing is closed by the insulating ring 130, there is a disadvantage in that the airtightness of these coupling sites where the harsh environment of high pressure and high temperature persists may be structurally problematic.

The present invention has been made to solve the structural end points of the corrugated pipe fittings for gas pipes so far, and the connection ends of the metal wrinkle pipes that are inserted and pressed into the cap coupling parts of the pipe sockets are precisely inserted into the actual coupling gaps and kept tight. The purpose of the present invention is to provide a corrugated pipe fitting for a gas pipe that can secure a structurally secure coupling state of the metal corrugated pipe.

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 crimp pipe fittings coupled state according to the present invention.

Figure 4 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: Packing pressing groove

14: close contact nut 20: sealed packing

22: insertion guide 24: airtight jaw

25: sealing protrusions 30: insulation fixing tube

34: packing crimping surface 35: crimp pipe crimping end

40: close contact nut 41: tool fastening part

43: socket coupling portion 50: metal corrugated pipe

51: connection end

As a technical means for achieving the above object, the present invention is excellent in bendability and corrosion resistance in the corrugated pipe fitting for gas piping for sealingly connecting the metal corrugated pipe of stainless steel used for gas piping with the external supply pipe, copper alloy material Sealing pipe socket is a sealing groove in the inner surface of the inner side of the close contact nut coupling portion in which the connection end of the metal corrugated pipe is inserted, the packing pressing groove is curved groove, so that the sealing packing is made of rubber is curved induction insert An airtight holding jaw protrudes so that the end of the close contact nut coupling part of the pipe socket can be kept tight while being pressed against the end of the pipe socket. The sealing protrusion is formed to be in close contact with the protrusion, and the insulating fixing tube made of plastic is the front part. The packing crimping jaw protrudes so as to be in surface contact with the airtight holding jaw of the closed packing, while the crimping pipe crimping end is protruded so that the connection end of the metal corrugated pipe can be inserted inwardly. The inner part of the socket coupling part, which is nut-tightened to the close nut coupling part, moves forward to the insulated fixing tube contact surface so that the insulation fixing tube is tightly inserted together with the metal wrinkle tube, while adhering the sealing fixing tube and the metal fixing tube between the sealing fixing tube and the metal fixing tube. The connection end coupling gap of the metal wrinkle tube to be inserted into the pipe socket is characterized in that it is configured to maintain the airtight.

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

Figure 1 shows the external structure of the crimped pipe fittings for gas piping according to the present invention, Figure 2 is a cross-sectional view showing the internal structure of the crimped pipe fittings according to the present invention, and Figure 3 is a corrugated pipe of the present invention The metal crimp tube 50 is tightly inserted into the pipe socket 10, which is a fitting, and shows a state in which the metal nut pipe 50 is hermetically coupled by compression fastening of the tight nut 40.

As shown in the drawings, the pleated pipe fittings of the present invention have a sealing function that is crimped and sealed in these coupling gaps together with the pipe socket 10 into which the connecting end of the corrugated stainless steel corrugated pipe 50 is inserted and pressed. Including the sealing packing 20 and the insulating fixing tube 30, the connection end of the metal corrugated pipe 50 is crimped together with the sealing packing 20 and the insulating fixing tube 30 while being coupled to the pipe socket 10. It consists of a close contact nut 40 for fixing.

The pipe socket 10 is made of a stainless steel material and a supply pipe coupling part 11 screwed to the outside so that the hexagonal fastening tool is fastened to an external supply pipe (not shown in the drawing) with the tool fastening part 12 fastened thereto. While the connection end of the metal corrugated pipe 50 is inserted and fixed, the socket coupling portion 43 of the close nut 40 is formed as a tight nut coupling portion 14 screwed inside so that the nut is fastened, and the close nut Coupling portion 14 is sealed in the inner portion so that the flexible sealing seal 20 can be accurately sealed and pressed while being guided in accordance with the fastening pressure of the contact nut 40 together with the relatively rigid insulating fixing tube 30 The packing pressing groove 13 corresponding to the insertion guide surface 22 of the packing 20 is curved in the groove.

In addition, the sealing packing 20 is formed of a silicone or rubber material having excellent airtightness so that the connection end of the metal corrugated pipe 50 can be compressed and fixed to the sealing means, the tight nut coupling portion 15 of the pipe socket 10 While the guide induction surface 22 is curved so that the surface contact can be pressed and structurally precisely inserted into the curved recessed packing pressing surface groove 13, the opposite extension end portion is in close contact with the nut 14 of the pipe socket 10. A closed protrusion 25 is formed to protrude from the rear end of the metal crimp tube 50 while being closely adhered to the inner side.

In addition, the soft sealing packing 20 is moved and compressed into the packing crimping groove 13 of the pipe socket 10 while insulating and maintaining the coupling gap between the contact nut 40, which is a fastening crimping means, and the metal corrugated pipe 50. The relatively rigid insulating fixing tube 30 made of a plastic material is made of a packing pressing surface of the insulating fixing tube 30 in which the front portion is pressed while moving the airtight holding jaw 24 of the hermetic packing 20 ( While the 34 is pressed, the shape can be accurately pressed while being held in the coupling gap between the metal pleated pipe 50 and the socket coupling portion 43 of the contact nut 40, and the inside front portion of the packing pressing surface 34 is made of metal. The connection end of the corrugated pipe 50 is easy to insert closely, but the crimp pipe crimping end 35 is formed so as to be structurally suppressed from the back escape.

In addition, the contact nut 40 made of a copper alloy such as brass as the pipe socket 10 is a straight bidirectional crimping means, in which the metal wrinkle pipe 50 is inserted into the hermetic packing 20 and the insulation fixing tube 30. In front of the tool fastening part 41 so that the sealing packing 20 and the insulating fixing tube 30 can be forward pressed in the state, and at the same time, they can be nut-coupled to the close contact nut coupling part 14 inside the pipe socket 10. As the screw is formed in the socket coupling portion 43, the inner portion of the socket coupling portion 43 is formed with a flat plain end surface so that the insulation fixing tube 30 is tightly inserted with the metal wrinkle tube 50 to be kept tight.

The corrugated pipe fitting for the gas pipe configured as described above is formed in the lengthwise direction and is soft into the tight nut coupling portion 14 of the pipe socket 10 in which the packing crimping groove 13 is curved to the inner tight nut coupling portion 14. In the state of fastening the relatively rigid insulating fixing tube 30 of plastic material together with the sealing seal 20 made of phosphorus rubber, inserting the connection end of the stainless steel corrugated pipe 50 into the close contact nut When the socket coupling portion 43 of the 40 is tightened by tightening the nut with respect to the tight nut coupling portion 14 of the pipe socket 10, the insulation fixing tube that is hard by the fastening pressure of the tight nut 40 is tightened. (30) pressurizes the sealing seal 20, which is a soft sealing means, so that the insertion guide surface 22 of the seal packing 20 is accurately brought into the surface contact compression seal into the packing crimp groove 13 of the pipe socket 10. The coupling gap between the close contact nut 40 and the metal corrugated pipe 50 It can ever reliably hermetically maintained.

In addition, the insulating fixing tube 30 is hermetically sealed the coupling gap between the socket coupling portion 43 of the contact nut 40, which is the fastening and pressing means, and the connection end of the metal corrugated pipe 50 by the pushed packing crimping jaw 33. And an insulation state can be maintained, and in particular, the sealing packing 20, which is a relatively soft direct airtight means by the insulation fixing tube 30, can be maintained while being precisely compressed into only a coupling gap requiring airtightness. As a result, it is possible to keep the airtight state of the corrugated pipe fitting structurally stable.

According to the corrugated pipe fitting for gas pipe according to the present invention described above, the sealing packing that is inserted and crimped together with the connection end of the metal pleated pipe into the inner side of the pipe socket is precisely contacted with the surface surface of the cap coupling part in the grooves of the packing grooves It can be fixed to ensure the airtightness of the actual coupling gap structurally and reliably, and the airtightness and insulation state can be maintained precisely by the insulation fixing tube in which the shape reinforcing ring is pressed. As a result, the airtight state of the corrugated pipe fitting is structurally stable. The effect is expected to be secured.

Claims (1)

In the corrugated pipe fitting for the gas pipe for connecting the metal corrugated pipe made of stainless steel used for gas pipe with excellent bendability and corrosion resistance with the external supply pipe, The pipe socket 10 made of copper alloy has a packing compression groove 13 so that the sealing packing 20 can be pressed against the inner surface of the close contact nut coupling part 14 into which the connection end of the metal wrinkle pipe 50 is inserted. ) Is a curved groove, and the sealing packing 20 is made of rubber material can be kept airtight while the end of the contact nut coupling portion 14 of the pipe socket 10 is pressed against the opposite end of the inclined insertion guide surface 22. The airtight retaining jaw 24 is protruded so that the inside of the sealing protrusion to be engaged in close contact with the inner portion of the close contact nut coupling portion 14 of the pipe socket 10, the connection end 51 of the metal corrugated pipe 50 The protrusion 25 is formed, and the insulating fixing tube 30 is made of plastic, and the packing crimping jaw 33 protrudes so that the front part thereof is in surface contact with the airtight holding jaw 24 of the hermetic packing 20. The inner end of the corrugated pipe crimping end 35 is projected so that the connection end of the metal corrugated pipe 50 can be closely inserted. On the other hand, the close contact nut 40 of the copper alloy material, the inner portion of the socket coupling portion 43 which is nut-fastened to the contact nut coupling portion 14 of the pipe socket 10 together with the metal corrugated pipe 50 and the insulation fixing tube The tube socket 10 is brought into close contact with the insulating fixing tube 30 with the sealing packing 20 and the metal wrinkle tube 50 interposed therebetween, while advancing to the insulating fixing tube contact surface 44 so that the airtightness is maintained while the 30 is tightly inserted. Corrugated pipe fittings for gas pipes, characterized in that configured to ensure that the connecting end 51 coupling gap of the metal corrugated pipe 50 is inserted into the airtight.