KR20130120972A

KR20130120972A - An assembly system for the flexible joint

Info

Publication number: KR20130120972A
Application number: KR1020120117624A
Authority: KR
Inventors: 박미순
Original assignee: 박미순
Priority date: 2012-04-26
Filing date: 2012-10-23
Publication date: 2013-11-05
Also published as: KR20130002253A

Abstract

A flexible joint is a flexible connection pipe which comprises a packing member, an insulation member, and an intermediate connection unit, wherein the packing member and the insulation member are installed in both ends of a flexible pipe; and which is applied to a piping system. The present invention relates to an assembly system of the flexible joint, the flexible connection pipe, to reduce production costs and the waste of resources and to guarantee uniform construction quality by enhancing an existing coupling structure in which a nut having larger volume and heavier weight in comparison to the capacity of the flexible pipe is used as a connector for coupling the flexible pipe and the connection unit.

Description

Flexible joint joint structure {an assembly system for the flexible joint}

Flexible tubes that give flexibility by forming annular or screw-shaped corrugations on thin metal tubes are easily applied to various piping systems. However, in order to apply a flexible pipe, which is a thin metal pipe, to the pipe without welding, connect the flexible pipe (2) through the intermediate connector (3) connecting to the pipe, and install the nut (4) as the coupling connector. Flexible joints are used in piping as unit assemblies. The present invention is a coupling connector that is installed on both ends of the flexible pipe and the flexible pipe composed of a single body to be used in the piping system by installing the nut and the intermediate connector as a coupling connector in the flexible pipe and the intermediate connector to connect with the coupling connector It relates to a coupling structure of the flexible joint constituted.

It is conventionally installed so that the nut, which is a coupling connector, does not detach from both ends of the flexible tube and the flexible tube serving as a main function of flexibility, and finally, the flexible tube and the intermediate connector are joined to each other by connecting the nut and the intermediate connector. Is a basic component of the flexible joint. In order to prevent leakage of these basic components, a packing (5) member is installed between the joint surface where the flexible tube and the intermediate connector come into contact with each other. When the flexible tube and the connector are different metals, if the potential difference between the dissimilar metals is concerned, It is a coupling structure of the conventional flexible joint that the contact blocking insulator 6 member or the like is provided to block the contact.

The manufacturing process of the flexible tube, which is the main material of the conventional flexible joint, is first molded into a straight pipe, and in order to impart flexibility to the straight pipe, a straight pipe is pressed inward with a tool called a die to form wrinkles. Therefore, such a structure is determined by the crimp reduced inner diameter of the pipe standard means the capacity of the flexible pipe naturally has a structure and shape that is too large compared to the standard. The conventional structure in which the nut 4, which is a coupling connector, is installed on the flexible tube formed as described above is flared or swelled up the straight tube portion of the flexible tube in such a way that the nut is squeezed out so that the nut is not detached in the open manner. It is structured to install. If this is not the case, it is necessary to use an excessively large size of the nut because the formation of a larger anti-separation jaw in the flexible tube of the enlarged structure and the nut is installed therein. Large size is used.

Such a structure implies the use of excessively large coupling and intermediate connectors, which leads to excessive waste and excessive cost. In particular, when expensive raw materials such as stainless steel and brass are used, the burden increases proportionally. In order to improve this, by reducing the outer diameter by making a narrow straight pipe by extending the wrinkles of the end of the flexible pipe, the improvement is not very effective considering the processing cost, labor cost, loss of material and noise.

Furthermore, the manpower-intensive process for screwing nuts and connectors in the related art involves processing techniques such as forging cutting and a detailed quality inspection process, and the necessary dismantling and reassembly at the construction site during manufacturing assembly and after delivery Due to the large difference in construction quality, there are many leaks and repairs, and over time, screw loosening and excessive nut tightening may cause packing to get caught in the nut's screw.

Even if the cost is too large due to the heavy structure, the price difference should be replaced with a structure that does not have a large difference in price, and at the same time, the middle connector of a small size should be selected, while the flexible pipe and the connector connected in the longitudinal direction from the flexible joint Should be easy to be combined and dismantled in the manufacturing process and at the construction site after delivery.After joining the flexible pipe and the connector after joining, the structure prevents the separation and flow in the longitudinal and transverse directions. In addition, the construction quality of the manufacturing plant and the construction site should be excellent and uniform. Especially in the case of gas, which is directly related to safety, securing the construction quality is more important.

The present invention is to achieve a flexible joint coupling structure using a coupler band (1) coupling connector to solve this problem. The coupling force of the coupler that connects the flexible pipe and the connector in the longitudinal direction is obtained by the structural support of the two-sided wings of the "c" shape, and the transverse separation and flow prevention is the circular shape formed by narrowing the circular arc 11 of the coupler. The structure of the circular arc itself and the coupling force between the circular arc and the circular arc and the end inserting portion 22 of the flexible tube are closely inserted into the inner circumferential surface of the intermediate connector, which is a mating member, or the flow prevention jaw 32 of the intermediate connector formed in an annular shape is It is to achieve through the structure inserted into the inner peripheral surface of the flexible tube as the mating partner.

While the band and the fastening structure of the conventional structure to ensure the main function of preventing the leakage of the coupling connector by the tightening force of the nut, the present invention is the construction stability is ensured only by the passive function to keep the circle in a circular state combined There is a difference in that construction completion can be confirmed. Therefore, the conventional flexible joint is able to guarantee the standardization of work and the uniform construction quality by assembling the quality of the assembly is completed by eliminating the trouble that the construction quality was dependent on the tightening force of the nut with a large deviation.

Coupling structure by coupler band is possible to prevent the separation and flow of two components of flexible pipe and connector, which is the main product of connection, in the longitudinal direction and the transverse direction, and its function and structure are clear and easy to dismantle and combine. Just by the standardized bonding force and the completion of assembly construction, there is a big advantage that the construction quality is uniformly guaranteed.

In addition, the size and weight can be significantly reduced compared to the nut, which is a conventional coupling connector, and the size and weight of the corresponding various intermediate connectors used for coupling with the nut can be greatly reduced. You can expect even more effects. In addition, replacing presses of relatively complex and expensive forging and cutting operations with simple press processing can improve productivity and significantly reduce costs.

1 is a representative view of the present invention
2 is a stereoscopic diagram of the coupler band of the present invention and the coupling step of the intermediate connector

The sprinkler flexible joint is a unit connecting tube configured to utilize the flexibility of the flexible tube 2 having a corrugation formed in a thin tube and to be coupled to a general pipe. Since the flexible pipe is so thin that it is difficult to form a screw, it can not be used as a connection pipe except general welding by itself, so that the intermediate connector (3) including the commonly known redus, nipple, socket, tee, elbow, etc. is fixed to the flexible pipe. The conventional coupling structure is used in combination with the nut 4, which is an installed coupling connector, as one unit assembly. This coupling structure is provided with a nut having an annular locking jaw inwardly formed on the flexible fixing jaw 21 formed to protrude in an annular shape at the end of the flexible tube so that the nut does not escape. It forms a structure that is screwed with the intermediate connector (3) that is a combination. The insulator 6 member which interrupts the contact between a packing 5 member or a dissimilar metal can be inserted as needed.

The present invention is to form a coupling structure of a flexible joint with a coupler band (1) as a coupling connector for coupling the flexible tube and the intermediate connector. The coupler band is formed by connecting two or more portions of an arc having a cross section of "c". On the other hand, in the fixed groove 15 having an internal groove having a cross-section of a "c" shape, the fixed jaw 21 of the flexible pipe and the fixed jaw 31 of the intermediate connector can be inserted in parallel, so that the flexible pipe and the intermediate connector have this groove. Through the connection will be combined. If two or more semicircular arcs consisting of a fixing groove formed in a "c" shape are connected to each other to form a circle, the overlapping part forms a band by forming an overlapping portion. Eventually, the cross section is a form of "ㄷ" and eventually functions as a coupler for interconnecting the flexible pipe and the intermediate connector, and this coupler is made of a band, which is called a coupler band.

This coupler band has two semi-circular arcs connected together and removes the two wings of the "c" of the fixing groove so that it can be easily opened or closed at the point where the arc and the arc are separated. It is set as the bending part 12 which becomes a shape. The bends may be joined by joining the disconnected parts. In addition, the bent portion provides a state in which the coupler band is open (A) so that both fixing jaws are passed so that the fixing jaw of the flexible pipe and the fixing jaw of the connector are easily parallel to each other. If the jaw of the parallel insert is to be closed to form a combination.

In this case, a method for inserting both fixing jaw into the fixing groove is formed in the fixing groove which is located close to the bending point to form a structure to easily insert both fixing jaw by providing an inclination angle by opening both wings on the "c" or As shown in FIG. 3, the inclined portion of the fixing jaw of the intermediate connector starts with the narrowest width of the edge of the middle connector without gradually opening the wings of the fixing groove and gradually widens toward both sides, eventually equaling the width of the fixing jaw (33) When the band is closed by inserting the width of the inclined part from the narrowest side, the fixing jaw of the intermediate connector is inserted through the stepwise insertion of the inclined part as shown in FIG. 3 and the coupler band is gradually closed at the same time. Combining the wings of the fixing groove may also open and reflect the slope of the fixing jaw of the intermediate connector.

In this case, both fixing jaws of the flexible pipe and the intermediate connector are easily inserted at the beginning, and the band is also closed while gradually being inserted. Finally, the coupler band forms a circle, and when the band is closed, the fastening device reaches the fastening position. The work is complete. In this state, the connection between the flexible pipe and the intermediate connector reaches the position B at which the coupling is completed. The installation of a leak-proof packing member for installing a flexible pipe, a connector and a coupler band as necessary, or an insulator member for preventing contact corrosion between dissimilar metals may be applied as in the conventional structure described above.

In this case, the fixing jaw inserted and fixed in the "c" shape of the fixing groove can be used as the fixing jaw as the formation of the peaks and valleys of the corrugated pipe of the flexible tube as it is. have. And the intermediate connector is to form a fixed jaw 31 of the connector to the end of the trumpet shape or right angle.

On the other hand, the shape of the circular arc divided into two or more has a structure in which the wings of the semicircular circular arc formed in the shape of "c" are continuously connected, and may be formed into two consecutive parts with the bending point in between. If it is difficult to form a circular arc of one blade into a continuous blade, it can be used by rolling a semi-circular shape by rolling a side blade into a sawtooth-like shape intermittently cut. Either way depends on cost and convenience of production.

And when the semicircular arc is closed, the overlapping part is made and the fastening device is installed in this part. In other words, in the overlapping portion, the back portion of the "c" -shaped fixing groove located in the back portion is formed at a right angle for fixing to form a fastening blade 14, which forms a wing, and a perforation for inserting the fastening blade to the other side located outside. One fastening hole 16 is formed to insert the fastening blade into the fastening hole. And the fastening blade may be left as it is to leave the locking groove (17) formed with a groove to fasten the fastening hole, or if the fastening blade is bent if necessary, the fastening is more sure lock function.

As such, the present invention achieves the purpose of preventing leakage or leakage at the pressure formed by the width of both side wings of the fixing groove of the coupler band of the flexible pipe and the connector, which is combined with a conventional band to tighten the action. Unlike the prevention of leakage by reducing the circumference and diameter, the combination of the band of the present invention does not provide the action of the tightening force to reduce the circumference and diameter, but merely provides a function to allow the arc to form a circle to maintain its shape. The transverse direction and flow prevention function is also mainly made by a circular arc having a fixed shape, and the tightening force merely provides an auxiliary function of the shape maintaining function.

Therefore, in order to reinforce the lateral separation or flow prevention, the end of the flexible pipe or the intermediate connector is formed by inserting the end 22 of the flexible tube and the flow preventing jaw 32 so as to closely contact a predetermined length to the inner circumferential surface of the mating joint. Insert and install according to the structure of the combination. In particular, by using the method of using the flow barrier of the intermediate connector can significantly reduce the size of the intermediate connector, the coupler band is simply solved without increasing the cost simply by increasing the length of the wing.

Coupler band (1), flexible pipe (2), intermediate connector (3), flexible fixing jaw (21), locking jaw (41), bent portion (12), fastening blade (14), fixing groove (16)

Claims

Installed between the flexible pipe (2) corrugated in the metal pipe, the intermediate connector (3) for connecting the flexible pipe and the general pipe, the coupling connector for joining the flexible pipe and the intermediate connector, and the mutual joint surface of the flexible pipe and the intermediate connector In the joining structure of the flexible joint consisting of a unit assembly in which the packing (5) member or the insulator (6) member that blocks the contact corrosion between the intermediate connector and the flexible pipe is connected to each other,
A semicircular arc 11 having two or more cross-sections of the "c" shaped fixing grooves 15 is formed, and the two "c" shaped wings of the fixed groove are removed between the circular arcs to form a yaw groove. Fastening blades 14 to form a bent portion 12 capable of opening or closing a circular arc, and forming an overlapping portion when the circular arcs join to form a circle, and forming a wing standing upright on the back portion of the fixing groove located on the inner side (14). ) And the other side located outside is a coupler band as a coupling connector in a structure forming a fastening hole 16 perforated to insert the fastening blade; A flexible pipe having a fixed jaw 21 protruding in an annular shape at the end of the pipe; Flexible joint coupling structure to form a combination with an intermediate connector formed a fixed jaw 31 protruding in an annular end.

The method of claim 1,
Consists of an intermediate connector that forms a slanted portion 33 formed of an inclination angle so that the width starts at the narrowest part of the edge of the anchoring jaw of the intermediate connector and gradually widens toward both sides. Flexible joint coupling structure.

The method of claim 1,
Flexible joint joining structure of the coupler band formed the first opening 13 of the two-winged structure of the "c" of the fixing grooves on both sides starting at the bending point to form a joining connector.

The method according to claim 1 or 2 or 3,
When the fixing jaw of the flexible pipe is combined with the fixing jaw of the intermediate connector, it is inserted into the inner circumferential surface of the flexible tube to extend the end of the fixing jaw of the intermediate connector so as to reinforce the structure of the flexible tube and prevent the separation and flow in the transverse direction. Flexible joint coupling structure for coupling to the intermediate connector to form a flow preventing jaw (32) consisting of a protruding insert.

The method according to claim 1 or 2 or 3,
When joining the fixing jaw of the flexible pipe and the fixing jaw of the intermediate connector is inserted in close contact with the inner peripheral surface of the intermediate connector to extend from the locking jaw of the flexible tube to prevent the separation and flow in the transverse direction consisting of an annular protruding insertion hole Flexible joint coupling structure for joining flexible pipes with flow barriers.