KR101539407B1 - Connecting device of spiral pipe - Google Patents

Abstract

The present invention relates to a spiral brass pipe connector, and more particularly, to a spiral brass pipe connector having a socket into which one end of a spiral brass pipe is inserted, a nut fitted in the spiral brass pipe so that the spiral brass pipe is fixed to the socket, And a sealing portion is formed at an inner end portion of the packing so as to surround the end of the spiral-shaped bellows tube, thereby improving the watertightness of the connection portion of the spiral bellows tube, Thereby increasing the efficiency of the system.

Description

Connecting device of spiral pipe

The present invention relates to a spiral brass pipe connector, and more particularly, to a spiral brass pipe connector having an excellent sealing function in connection with a bellows of a spiral brass pipe, and capable of preventing damage to components such as packing during a connection process .

Generally, the helical tube is designed to have a smaller fluid resistance than the annular corrugated tube, and to facilitate the heat exchange with the outside of the heat tube of the fluid, and to bend freely, and the method of connecting to tubes, pipes, heat storage tanks, There are threaded joints, but parts such as packing are leaked due to the difference of thermal expansion / contraction coefficient.

In addition, there is a metal joining method (flat or joint type) in which there is no packing (sealer), but the end connection of the pipe is not possible in the field, and the tightening torque is large.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spiral brass pipe connector capable of ensuring a sufficient watertightness even with a small coupling force.

The helical bellows pipe connector according to the present invention comprises a socket into which one end of a helical bellows pipe is inserted, a nut fastened to the socket so that the helical bellows pipe is fixed to the socket, and a packing positioned between the one end of the helical bellows pipe and the socket Wherein the packing includes a sealing portion that is fitted to the end of the helical bellows tube so that the end of the spiral bellows tube is inserted into the sealing portion of the packing and the end of the helical bellows pipe inserted into the sealing portion.

The sealing portion has a radial thickness in a radial direction of a portion located at the most distal end of the sealing portion in a radial direction of a portion located at an innermost portion of the concave portion so that the end portion of the helical bellows tube is fitted, The width of the recess in the radial direction and the thickness of the sealing portion in the radial direction are gradually increased toward the nut direction.

In addition, the recess may be formed by a protruding tube portion protruding from the inner circumferential surface of the socket toward the nut.

The sealing portion includes an outer sealing portion which is in close contact with an outer peripheral surface of an end of the spiral bellows tube and extends integrally with the extending portion and an inner sealing portion which is in close contact with an inner peripheral surface of the end of the spiral bellows, And a spiral groove is formed between the portions so as to be screwed with the ends of the helical bellows tube.

In addition, the packing may be made of a material capable of being elastically deformed.

In addition, the packing may be screwed onto the spiral bellows.

In addition, the socket may be formed to be inclined such that the outer diameter thereof increases from the inner side toward the nut side.

The inner diameter of the socket may be gradually increased from the inner side toward the nut side.

Further, the packing may be formed such that the outer diameter gradually decreases toward the inner side of the socket.

The helical bellows pipe connector according to the present invention has an effect that the water tightness can be secured primarily by screwing the packing to the end of the helical bellows pipe which is the connection part with the other object and then tightly fitting the bellows groove formed in the socket.

The helical bellows pipe connector according to the present invention is characterized in that the packing is provided with an outer sealing portion interposed between an inner circumferential surface of the socket and the outer circumferential surface of the helical bellows tube and an outer sealing portion extending from the inner circumferential surface of the bellows portion and the helical bellows tube And the inner sealing portion interposed between the inner circumferential surfaces of the inner sealing portion and the inner sealing portion, so that the watertightness can be secondarily increased.

The spiral brass pipe connector according to the present invention is characterized in that the packing is made of a material which is easily deformed elastically or a graphite material and the packing is coupled by a pressing force of a nut and a support ring for fixing the packing, It is possible to prevent a gap from being formed between the packing and the helical bellows tube.

In addition, since the spiral brass pipe connector according to the present invention has a double sealing effect as described above, the connecting portion can be connected even with a small bonding force.

FIG. 1 is an exploded perspective view showing an embodiment of a spiral brass pipe connector according to the present invention,
FIG. 2 is an exploded perspective view showing a packing fixed by a socket and a nut in the configuration of FIG. 1 and screwed into a spiral corrugated pipe,
FIG. 3 is a cross-sectional view of FIG. 2,
Fig. 4 is a partial cutaway perspective view showing the packing of Fig. 1,
5 is a partially cutaway perspective view illustrating a spiral bellows connector according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a spiral brass pipe connector according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exploded perspective view showing one embodiment of a helical bell pipe connector according to the present invention, Fig. 2 is an exploded perspective view showing a packing fixed by a socket and a nut and screwed into a helical bell pipe, FIG. 4 is a partially cutaway perspective view showing a packing in the structure of FIG. 1, and FIG. 5 is a partially cutaway perspective view showing a spiral brass pipe connector according to an embodiment of the present invention.

1, the spiral bellows pipe connector according to the embodiment of the present invention includes a socket 30 into which one end of a spiral bell pipe 10 is inserted, an end of the spiral bell pipe 10, 30). ≪ / RTI >

The packing 20 is interposed between the spiral corrugated pipe 10 and another spiral corrugated pipe 10 or a part necessary for connection with a bodily object to seal the fluid flowing in the spiral pipe 10, ) Function. Usually, the packing 20 performing such a function can be made of a material that is easily deformed elastically. It is a matter of course that a flexible material, which is usually made of a rubber material, can be adopted as a material which can be elastically deformed easily.

The helical tube 10 is preferably made of a material having a good heat transfer rate so that the fluid can flow easily through the inside of the tube.

The packing 20 is screwed to an end of the helical tube 10 such that the end of the helical tube 10 is wrapped by the packing 20. To this end, the packing (20) is provided with a threaded portion (female threaded portion) corresponding to a threaded portion (male threaded portion) formed on the outer peripheral surface of the spiral wrinkle tube (10).

More specifically, as shown in FIG. 4, the packing 20 is formed in a cylindrical shape corresponding to the helical tube 10 so that the end of the helical tube 10 is inserted and coupled.

The packing 20 may be formed to have a tapered cross section whose outer diameter decreases toward the end portion of the spiral-shaped corrugated pipe 10.

Specifically, the packing 20 has a sealing part 21 fitted at an inner end thereof so as to surround the end of the helical tube 10, and a sealing part 21 extending from the sealing part 21 and having one end of the helical tube 10 And an extension part 22 which is fitted to the sealing part 21 and is in close contact with the outer circumferential surface of the spiral bending pipe 10.

The sealing part 21 is connected to the outer sealing part 23 to which the outer circumferential surface 14 of the helical tube 10 closely contacts and the outer sealing part 23 at the end, And an inner sealing portion 24 to which the sealing member 12 is closely attached.

The outer sealing portion 23 and the extending portion 22 are integrally connected to each other so as to be in close contact with the outer circumferential surface of the helical tube 10. [

As shown in FIG. 4, the sealing portion 21 composed of the outer sealing portion 23 and the inner sealing portion 24 is formed to have a substantially "C" -shaped cross section, (25) is formed between the inner sealing portion (23) and the inner sealing portion (24).

The groove 25 may be formed as a spiral groove so that the end of the spiral bell pipe 10 is screwed.

The best end portions of the outer sealing portion 23 and the inner sealing portion 24 where the end of the helical tube 10 is fitted have the same thickness as the reference numeral "t1" in FIG.

That is, the thickness of the sealing portion corresponding to 1/2 of the difference between the outer diameter and the inner diameter of the sealing portion located at the best end protruding toward the socket 30 in the sealing portion 21 is equal to "t1".

One end of the spiral corrugated pipe 10 having an end coupled to the sealing portion 21 is engaged with the socket 30.

2 and 5, in the socket 30, a flow hole 35 is formed to allow the fluid to pass therethrough, and in the socket 30 corresponding to the flow hole 35, Groove portions 32 into which the sealing portions 21 coupled to the ends of the helical bellows tube 10 are inserted are formed.

2 and 3, the recessed portion 32 is formed by a protruded tube portion 36 formed on the inner periphery of the socket and protruding toward a nut 40 described later.

That is, the protruding tube portion 36 is formed as a cylindrical tube having a constant diameter in the direction of the nut 40 from a predetermined internal position of the socket 30 so as to be integrally formed with the socket 30, A recessed portion 32 is formed between the protruded portion 38 and the protruded tube portion 36. [

It is preferable that the recessed portion 32 is formed to have a width (refer to reference numeral t2 in FIG. 2) in which the sealing portion 21 having the end of the helical tube 10 is inserted. That is, the thickness of the sealing portion 21 indicated by the reference numeral "t1" in Fig. 2 is larger than the thickness of the sealing portion 21 at the innermost portion of the recessed portion 32, A width corresponding to one half of the difference between the diameter of the outer circumferential surface 34 and the diameter of the outer circumferential surface of the projecting tube portion 36 which is the inner circumferential surface is slightly smaller than the width of the end of the helical tube 10 Is inserted into the recessed portion (32). The difference between the diameter of the outer circumferential surface 34 of the recessed portion 32 and the diameter of the outer circumferential surface of the protruded tube portion 36, which is the inner circumferential surface, located at the outermost portion of the recessed portion 32, The sealing portion 21 can be easily inserted into the recessed portion 32 at an early stage because the width corresponding to one half of the sealing portion 21 is formed to be larger than the thickness t1 of the best end portion of the sealing portion 21. [

When the sealing portion 21 is forcedly inserted into the recessed portion 32, the spiral-shaped corrugated tube 10 is not fixed to the socket 30 by the nut 40 described later, So that the joining process can be facilitated.

When the sealing portion 21 is fitted in the recessed portion 32, the inner peripheral surface 36 and the outer peripheral surface 34 of the recessed portion 32 (corresponding to the inner peripheral surface 34 of the socket 30) There is an advantage that the watertightness is improved because it is more closely adhered.

In addition, the packing 20 is made of a material that is easily deformed elastically or slippery graphite material as described above, and it is natural that the packing 20 is easy to be tightly fitted to the recessed portion 32.

In order to facilitate insertion of the end portion of the spiral corrugated pipe 10 in a state where the packing 20 having the tapered shape is coupled as described above, the recessed portion 32 can be easily inserted into the recessed portion 32, The inner circumferential surface of the recessed portion 32 is formed into a tapered shape in which the diameter of the outer circumferential surface of the recessed portion 32 gradually increases from the inside to the outside (right side in the drawing) As shown in Fig.

Since the packing 20 is made of a material such as rubber that is easily deformed elastically, the process of inserting the packing 20 into the recessed portion 32 is easy, and the sealing portion 21 is inserted into the recessed portion 32 Since the small external force does not easily detach from the recessed portion 32, the tightness of the spiral corrugated pipe 10 with respect to the socket 30 is excellent.

)에 대응되는 길이(

)로 형성될 수 있다.On the other hand, the sealing portion 21 is formed at a depth of the recessed portion 32

) Corresponding to the length (

).

1 to 3 and 5, the helical bellows pipe connector according to the embodiment of the present invention includes a support ring 42 (FIG. 1) for fixing the helical bellows pipe 10 coupled to the hollow groove 32, ).

The support ring 42 is coupled to the helical tube 10 to support the packing 20 so that the support ring 42 is not exposed to the outside by the socket 30 and the nuts 40 to be described later.

The helical bellows pipe connector according to the embodiment of the present invention is connected to the outer circumferential surface 38 of the socket 30 to shield the support ring 42 from the outside and press the support ring 42 And a nut (40).

The support ring 42 serves to support the packing 20 so that the packing 20 is not moved before the spiral hole 10 and the socket 30 are finally coupled by the nut 40.

Particularly, the support ring 42 is formed on the inner surface of the support ring 42 so as to be engaged with the male screw portion formed on the outer circumferential surface of the helical bell pipe 10 so as to be fitted to the outer circumferential surface of the helical bell pipe 10.

Here, the support ring 42 is not necessarily formed longer than necessary, but it is sufficient that the support ring 42 has a length sufficient to form a female screw portion of at least one pitch.

The support ring 42 is screwed to the outer circumferential surface of the helical tube 10 so that the end of the helical tube 10 in a state where the packing 20 is engaged is inserted into the recessed portion 32 The support ring 42 is screwed to the side where the packing 20 is disposed to support the packing 20 by double-finishing the packing 20.

At this time, the outer diameter φ of the support ring 42 is set so that at least the support ring 42 coupled to the spiral-shaped corrugated pipe 10 contacts the outer peripheral surface of the spiral-shaped corrugated pipe 10 and the inner peripheral surface 34 of the socket 30, As shown in Fig.

This is because the support ring 42 is inserted between the outer circumferential surface of the helical tube 10 and the inner circumferential surface 34 of the socket 30 so that the packing 20 is pressed against the recessed portion 32 For example.

A female threaded portion corresponding to a male threaded portion of the socket 30 is formed on an inner circumferential surface of the nut 40. The female threaded portion 40 of the female threaded portion 40 is inserted into the socket 40, (38) of the base (30).

2, the outer circumferential surface 38 formed with the male threaded portion of the socket 30 is formed to have a larger diameter toward the front end where the nut 40 is first screwed, The inner circumferential surface formed with the female threaded portion is formed in a shape that gradually decreases in accordance with the distance of the portion of the portion of the socket 30 which is first engaged with the outer circumferential surface of the socket 30 and fastened to the socket 30.

That is, the outer circumferential surface 38 of the socket 30 is formed so as to gradually increase in diameter toward the nut 40, while the inner circumferential surface of the nut 40 has a larger diameter toward the socket 30 And is formed to be gradually larger.

When the female thread portion formed on the inner circumferential surface of the nut 40 is screwed to the male thread portion formed on the outer circumferential surface 38 of the socket 30, the diameter of the distal end portion of the socket 30 becomes larger, So that the packing 20 inserted in the socket 30 is compressed and the pressing force of the packing 20 is advantageously improved to further improve the sealing function of the connecting portion of the spiral corrugated pipe 10 Lt; / RTI >

Particularly, the nut 40 is screwed to the socket 30, and the support ring 42 coupled by the previous coupling process is closely contacted with the recess 30 in the direction in which the recessed portion 32 is formed, The compression of the packing 20 not only in the center direction but also in the direction of the recessed portion 32 provides an advantage of ensuring a larger watertightness.

The spiral bellows connector according to the embodiment of the present invention is characterized in that the recessed portion 32 is formed in the socket 30 and the spiral tube 10 is directly coupled to the recessed portion 32 And the packing 20 is further compressed by the nuts 40 and the support ring 42. In addition, the nuts 40 and the support ring 42 are used to press the packing 20 in an indirect contact manner in which the packing 20 including the sealing part 21 is interposed. And finally connecting the spiral corrugated pipe 10 to the socket 30, there is an advantage that the water tightness of the product is greatly improved and the bonding process is facilitated.

Hereinafter, the joining process of the spiral brass pipe connector according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 1, the nut 40 is first inserted into the outer circumferential surface of the helical tube 10, and then the support ring 42 is screwed.

Next, the packing 20 is screwed to the end of the helical tube 10 while rotating.

The end of the spiral corrugated pipe 10 in a state where the packing 20 is screwed is moved in the direction in which the recessed portion 32 of the socket 30 is formed, (32).

After the helical tube 10 in a state where the packing 20 is screwed into the recessed portion 32 is temporarily fixed, the support ring 42 is rotated to move the packing 20 firmly And then inserted and rotated between the outer circumferential surface of the helical tube 10 and the inner circumferential surface 34 of the socket 30. [

Finally, when the nut 40 is screwed into the socket 30, the coupling process of the helical bell pipe connector according to the present invention is completed.

Hereinabove, the construction and the joining process of the spiral brass pipe connector according to the embodiment of the present invention are described in detail with reference to the accompanying drawings. However, it should be understood that the embodiments of the present invention are not necessarily limited thereto, and that various modifications and other embodiments falling within the scope of the present invention can be realized by a person having ordinary skill in the art to which the present invention belongs. Accordingly, the true scope of the invention should be determined by the following claims.

: 내측 실링부의 길이

: 요홈부의 형성 깊이
φ: 지지링의 외경10: Spiral bellows 12: Inner bellows of spiral bellows
14: outer circumferential surface of spiral corrugated tube 20: packing
22: extension part 23: outer sealing part
24: inner sealing portion 25: groove
30: socket 32:
34: inner peripheral surface of the socket 35:
36: inner peripheral surface of the recessed portion 38: outer peripheral surface of the socket
40: nut 42: support ring
t1: thickness of packing t2: width of groove

: Length of inner sealing part

: Depth of formation of groove
φ: outer diameter of the support ring

Claims (7)

A socket into which one end of the helical bellows tube is inserted;
A nut fastened to the socket so that the helical tube is fixed to the socket;
And a seal which is positioned between one end of the helical bellows tube and the socket and includes a sealing part which is fitted so as to wrap the end of the helical bellows tube,
Wherein the sealing portion of the packing includes an outer sealing portion which is in close contact with an outer peripheral surface of an end of the spiral bellows pipe and an inner sealing portion which is in close contact with an inner peripheral surface of the end of the spiral bell pipe,
A spiral groove is formed between the outer sealing portion and the inner sealing portion so as to be screwed with the end of the spiral bellows,
Wherein a protruding tube portion protruding from the nut toward the nut is integrally formed with the socket to form a groove portion into which the sealing portion of the packing is inserted,
Wherein the sealing portion has a radial thickness greater than a radial width of a portion located at the innermost portion of the concave portion so that the sealing portion is located at the foremost end of the sealing portion so that the spiral- Formed,
The width of the recess in the radial direction and the thickness of the sealing portion in the radial direction are gradually increased toward the nut direction,
Wherein the outer circumferential surface of the recess is formed to be inclined so that its diameter gradually increases toward the nut direction and the inner circumferential surface of the recess is formed horizontally in the longitudinal direction of the socket so that its diameter is constant.
The method according to claim 1,
Wherein the packing includes an extension extending from the outer sealing portion in the direction of the nut to come in close contact with an outer circumferential surface of the helical bellows tube.
The method according to claim 1,
The sealing portion
And a length corresponding to the depth of the recess.
The method according to claim 1,
And a support ring coupled to the helical tube and positioned between the packet and the nut.
The method according to claim 1,
Wherein the packing is made of a material capable of being elastically deformed.
The method according to claim 1,
Wherein the socket has an outer circumferential surface formed with a male screw portion so as to be inclined so as to become larger in the direction of the nut, and the nut has an inner circumferential surface formed with a female screw portion screwed with the male screw portion of the socket, Corrugated connector.
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