KR200325049Y1 - Connecting structure for pipe - Google Patents

Abstract

The present design improves the connection structure of the pipe so that it can be combined in a solid and airtight state without forming a screw in the pipe, and can improve the connection workability while preventing durability deterioration due to strength weakness and corrosion. As for a pipe connection structure,

In connecting pipes for constructing a transport line for transporting raw materials such as fluids, gases and solids;

Receiving grooves 34 and 35 formed in inner diameters to accommodate both ends 32 and 33 of the pipe 31 to be connected;

Hermetic pads (38,39) including a locking step (36,37) formed in the inner end of the receiving groove (34,35) to prevent separation;

A male and female fastening socket (40, 41) which is accommodated in both ends (32, 33) of the pipe (31) and controls the hermetic pads (38,39);

The outer diameter of the hermetic pads (38, 39) and the straight portion (L) of a predetermined length (l) in the outward direction from the connecting surface (42, 43);

An inclined portion (A) is formed from the straight portion (L) to the outer ends (44, 45) of the hermetic pads (38, 39);

Forming the same inclined portion (A1) as the inclined portion (A) of the hermetic pads (38,39) so as to interrupt the hermetic pads (38,39) on the inner surfaces of the fastening sockets (40, 41);

The length of the straight portion L of the airtight pads 38 and 39 has a length shorter than the length of the threaded portion 46 of the fastening sockets 40 and 41 so that the airtight pads are fastened to the fastening force of the fastening sockets 40 and 41. 38,39) allow mutual reaction to work,

The length of the inclined portion A of the hermetic pads 38 and 39 is longer than that of the fastening sockets 40 and 41 so that the pipe 31 and the fastening sockets 40 and 41 are prevented from contacting each other. It is characterized by.

Description

Connecting structure for pipe}

The present invention relates to a pipe connecting structure, and more particularly, to an improved connection structure for easily connecting a pipe for transporting a fluid or gas.

Pipes are mainly used for the transport of fluids such as water, sewage pipes, hydraulic lines such as oil, etc. for the transport of water, and the transport of various raw materials such as gases and powders such as gases.

Since the pipe is produced to be limited in length, if the entire length of the transfer line is long, it has a plurality of connection parts in the middle, and this connection part has a connection structure that can prevent leakage by maintaining airtightness. To be done.

Conventionally, various types of pipe connection structures have been developed and used, but a representative example will be described with reference to FIGS.

The conventional pipe connection structure 1,

A male body having screws 4 and 5 for fastening at the outer diameters of both ends of the pipes 2 and 3 to be connected, and screws 6 and 7 having inner diameters at the screws 4 and 5. Connect using the connecting sockets (8, 9).

Of course, it will be natural that the hermetic material 10 for confidentiality is built in between the connecting sockets 8 and 9 of the male body.

In the prior art as described above, by forming a screw for fastening in the plated pipe, the efficiency of work due to the addition of the process according to the screw formation is reduced, and after connecting the respective connecting sockets to each pipe, the connecting sockets are fastened to each other. If you want to be able to rotate the entire pipe on one side will provide a cause of poor workability.

By forming a screw in the pipe as described above, there is a high risk of corrosion due to the removal of the plating layer, and by forming a screw in the pipe having a thin thickness to reduce the overall thickness has a problem of lowering the strength of the connection to weaken the corrosion resistance. .

In particular, pipes are generally made of steel, whereas the connection sockets are made of cast iron, which promotes corrosion due to splicing between dissimilar materials, making the overall durability less vulnerable. Since the contact portion is made by cutting after plating, corrosion occurs due to loss (removal) of the plating portion.

In addition, since the connection socket is made of cast iron, which is not made of toughness, it is very vulnerable to shock. In addition, when the external temperature is low, such as winter, damages caused by freezing are feared. Various problems, such as causing the outflow of the fluid, such as.

Therefore, the present invention is designed to solve the above problems, improve the connection structure of the pipe so that it can be combined in a solid and airtight state without forming a screw in the pipe, durability due to strength weakness and corrosion, etc. The purpose of the present invention is to improve workability while preventing deterioration, thereby contributing to the convenience of users and the improvement of overall quality of the connected state.

1 is a perspective view of a partially omitted fracture showing the pipe connection structure to which the prior art is applied.

2 is a cross-sectional view showing a pipe connection structure of the prior art applied to FIG.

Figure 3 is an exploded perspective view showing a pipe connection structure applied technology of the present invention.

Figure 4 is a perspective view of a partially omitted fracture showing the pipe connection structure applied technology of the present invention.

Figure 5 is a cross-sectional view of the coupling state showing a pipe connection structure applied technology of the present invention.

Figure 6 is a cross-sectional view showing a pipe connection structure to which another embodiment of the present invention is applied.

* Description of the symbols used in the main parts of the drawings *

30; Pipe connection structure

31; pipe

36,37; Jam

38,39; Airtight pad

40,41; Tightening Socket

47; ring

L; Straight part

A, A1; Slope

Hereinafter, with reference to the accompanying drawings will be described the configuration, operation and effects of the present invention for achieving the above object.

3 is an exploded perspective view showing a pipe connection structure to which the technology of the present invention is applied, FIG. 4 is a perspective view of a partially omitted fracture view showing a pipe connection structure to which the technology of the present invention is applied, and FIG. 5 is a pipe to which the technology of the present invention is applied. It will be described together as a cross-sectional configuration diagram showing the connection structure.

The present invention is characterized in that it provides a new connection structure 30 for connecting a pipe for constructing a transport line for transporting raw materials such as fluids, gases and solids.

Pipe connection structure 30 to which the technology of the present invention is applied,

Receiving grooves 34 and 35 are formed in the inner diameter so as to accommodate both ends 32 and 33 of the pipe 31 to be connected, and a catching jaw 36 for preventing separation at the inner ends of the receiving grooves 34 and 35. And a pair of hermetic pads 38 and 39 formed integrally with each other.

The hermetic pads 38 and 39 are to be interrupted by the mating sockets 40 and 41 of the male body accommodating both ends 32 and 33 of the pipe 31.

The hermetic pads 38 and 39 are preferably made of a synthetic resin material having a certain degree of elasticity, strength, heat resistance, and cold resistance to have a sealability and durability against temperature changes.

On the outer diameters of the hermetic pads 38 and 39, a straight portion L having a predetermined length l is formed outwardly from the connecting surfaces 42 and 43, and the hermetic pads 38 and 39 are formed at the straight portion L. The inclined portion A having the predetermined inclination angle a is formed up to the outer end portions 44 and 45 of 39.

Of course, the same inclined portion A1 as that of the inclined portion A of the hermetic pads 38 and 39 is also formed on the inner surfaces of the fastening sockets 40 and 41 of the hermaphrodite.

The length of the straight portion L of the hermetic pads 38 and 39 has a length shorter than the length of the threaded portion 46 of the fastening sockets 40 and 41 of the hermetic body. The reaction force is operated, and the length of the inclined portion A of the airtight pads 38 and 39 is longer than that of the fastening sockets 40 and 41 so that the pipe 31 and the fastening sockets 40 and 41 interact with each other. The contact phenomenon is prevented.

The fastening sockets 40 and 41 are steel materials having considerable durability and toughness, and are cold forged and cut to minimize changes in volume while responding to changes in the surrounding environment, and provide elastic force between the fastening sockets 40 and 41. Branch is closed with a ring 47 is configured to compensate for the gap (Gap) that may occur between the fastening socket (40, 41).

In addition, the fastening sockets 40 and 41 have considerable corrosion resistance (more than twice) compared with general hot dip galvanizing, and have a dark surface so that the plating layer can be maintained on the screw surface or the cutting surface by performing a surface treatment after finishing. The treatment is performed to improve the corrosion resistance.

The present invention as described above,

When connecting the pipes 31 to each other in the process of constructing the transfer line using the pipes 31, the coupling sockets 40 and 41, which are provided as a male body, are first inserted into the pipes 31 to be connected.

After inserting the fastening sockets 40 and 41 as described above, the sealing pads 38 and 39 are inserted into the both ends 32 and 33 of the pipe 31 so that the locking jaws 36 and 37 of the airtight pads 38 and 39 are inserted. The pipe 31 to be caught.

In this state, the pipes 31 are connected to each other so that the mating surfaces 42 and 43 of the airtight pads 38 and 39 are brought into close contact with each other, and then the fastening sockets 40 and 41 are screwed together to securely tighten the pipes 31. The tightening is completed.

Of course, in the process of fastening the fastening sockets (40, 41), the air tight pads (38, 39) against the fastening force (action) of the fastening sockets (40, 41) are generated by the repulsive force (reaction) Airtight force on the joint surface (42,43) of the) is improved, and the separation phenomenon between the airtight pads (38,39) and the pipe 31 is prevented and a stronger bond is made, the fastening socket (40, 41) The gaps that may occur between the phases are covered by rings 47 interposed between the fastening sockets 40 and 41.

In particular, the fastening sockets 40 and 41 are located on the airtight pads 38 and 39 so that they are not connected to the pipes 31, thereby preventing contact between the pipes 31 and the fastening sockets 40 and 41. Corrosion can be prevented.

As such, the present invention combines the airtight pads 38 and 39 to the pipe 31 without the hassle of processing the pipe 31 to be connected, and then completes the connection by combining the fastening sockets 40 and 41. You can increase the efficiency of the work.

As another example of the present invention, if the pipe 31 is to be connected by changing the direction without connecting in a straight line, one side of the fastening sockets 40 and 41 may be changed, such as elbow or T type.

In addition, as shown in FIG. 6, the airtight pads 38 and 39 provided as a pair may be deteriorated in workability but may be formed of a single body that is not separated.

In addition, the pipe connection structure of the present invention, in addition to connecting the pipe of the metal material, the fastening sockets (40, 41) and the like composed of synthetic resin or plastic material and applied to the pipe such as plastic pipe or soft hose, the same effect You will get

The present invention is blocked by a gas-tight pad made of synthetic resin inside the pipe and the fastening socket, so that even if the fastening socket is applied to steel, stainless steel, or copper pipes, contact corrosion (galvanic) caused by contact between the double metals occurs. It does not have the advantage of being widely used.

The present invention as described above improves the connection structure of the pipe to form a tight and airtight state without forming a screw in the pipe, and to improve the connection workability while preventing durability degradation due to strength weakness and corrosion, etc. It is designed to achieve various effects such as contributing to the convenience of users and the improvement of the overall quality of the connected state.

Claims (4)

In connecting pipes for constructing a transport line for transporting raw materials such as fluids, gases and solids; Receiving grooves 34 and 35 formed in inner diameters to accommodate both ends 32 and 33 of the pipe 31 to be connected; A pair of hermetic pads (38, 39) including a locking jaw (36, 37) formed in the inner end of the receiving groove (34, 35) to prevent separation; A male and female fastening socket (40, 41) which is accommodated in both ends (32, 33) of the pipe (31) and controls the hermetic pads (38,39); The outer diameter of the hermetic pads (38, 39) and the straight portion (L) of a predetermined length (l) in the outward direction from the connecting surface (42, 43); An inclined portion (A) is formed from the straight portion (L) to the outer ends (44, 45) of the hermetic pads (38, 39); Forming the same inclined portion (A1) as the inclined portion (A) of the hermetic pads (38,39) so as to interrupt the hermetic pads (38,39) on the inner surfaces of the fastening sockets (40, 41); The length of the straight portion L of the airtight pads 38 and 39 has a length shorter than the length of the threaded portion 46 of the fastening sockets 40 and 41 so that the airtight pads are fastened to the fastening force of the fastening sockets 40 and 41. 38,39) allow mutual reaction to work, The length of the inclined portion A of the hermetic pads 38 and 39 is longer than that of the fastening sockets 40 and 41 so that the pipe 31 and the fastening sockets 40 and 41 are prevented from contacting each other. Pipe connection structure, characterized in that. The method of claim 1; The fastening socket (40, 41) is a pipe connection structure, characterized in that by performing a surface treatment after the completion of the surface treatment to the dark surface so that the plating layer is maintained on the screw surface or cutting surface. The method of claim 1; The hermetic pads 38 and 39 are made of a synthetic resin material having a certain degree of elasticity and strength, heat resistance and cold resistance; The fastening socket (40, 41) is a pipe connection structure, characterized in that formed from a steel material having considerable durability and toughness. The method of claim 1; The hermetic pad (38,39) is a pipe connection structure, characterized in that the unit is not separated.