KR101300539B1 - Expansion type pipe and structure of pipe joint - Google Patents

Abstract

PURPOSE: A bidirectional expanded pipe and a joint structure thereof are provided to efficiently prevent the movement of the pipe in comparison with a joint structure fixed to the end by simultaneously supporting an expanded pipe unit and a water hole unit in a transverse direction. CONSTITUTION: A bidirectional expanded pipe and a joint structure thereof comprise an expanded pipe (200), a joint (100), and a packing (150) of synthesis rubber material. The expanded pipe is equipped with an inclined unit (210) where the end is formed to be expanded and an expanded end unit (220) which is formed in the inclined unit. The joint surrounds a connecting part of the expanded pipe and is connected by bolts. The joint is equipped with a connecting cross section (130) to stably connect the expanded pipe. A plurality of packing connecting grooves is equipped on the connecting cross section. A packing connecting protrusion is formed to be engaged with the packing connecting groove on the connecting cross section. The packing is made of synthesis rubber material and is inserted inside the joint. The packing is connected at the inside of the joint and converts the connecting cross section of the joint.

Description

Expansion type pipe and structure of pipe joint

The present invention relates to a pipe and a joint connecting the pipe, and in particular, by changing the structure of the pipe, the joint and the packing to maintain a stable airtight in the joint or the gap to prevent the leakage or leakage of gas and reduce the defective rate To a bidirectional expandable pipe and its joint structure.

In various chemical machines, plant equipment, and mechanical equipment, piping is used as a passage for moving a fluid such as a liquid or a gas in a sealed state.

Since these pipes are to be connected to each other at a predetermined position, both ends of the pipe are classified according to the type of pipe or the method of joining thereof for the coupling of the connection portion.

First, when comparing the pipe type for pipe coupling, it can be classified into polyethylene epoxy coated steel pipe, cast iron pipe, PE pipe, glass fiber composite pipe, HI-3P, stainless steel pipe.

In this case, the polyethylene epoxy-coated steel pipe which is generally used is divided into welding method, turning lock method, and joint method.

The welding method is in contact with the bevel end or the end of the bell-end type butt welding method. In this case, watertightness and airtightness are excellent, and the cost of joining materials can be reduced, but product performance and lifespan depend on welding technology and material quality, and there is a fear of intensive corrosion due to carbonization of internal coating materials due to deformation of raw materials.

The turning lock method is fastened using a bolt and a nut by using the locking projection and the separation prevention housing. In this case, the construction is easy and simple, it has a certain separation prevention force through the locking projection and the separation prevention housing, precision is required for the manufacturing of the connecting material, there is a risk of leakage due to carelessness during construction.

Therefore, there is no need for welding during construction, easy and simple, there is no damage to the internal liquid epoxy coating material, no repair work is required, and there is a lot of joint method that does not have the risk of rust generated by corrosion.

The joint method generally includes a groove joint process for processing a groove in a pipe end when the width of the pipe is 300 A or less, and a ring joint process for attaching a ring when 300 A or more. Therefore, the rubber ring mounting and joint are fastened using bolts and nuts.

In addition, the expansion ring joint method is mainly used for large pipe joints of 1100A or more. One end of the tube is formed with an expanded tube portion having an expanded diameter, and one end of the tube is inserted inside the expanded tube portion, and then a welded portion is formed by welding or the like to fix the tube.

 However, when the welding part is connected by welding, the working space is narrow and the work is very inconvenient, and there is a risk of fire during welding. Problems were inherent.

Therefore, in order to solve the above problems, the Utility Model Registration No. 20-0318955 has proposed the "structure of the pipe joint". This inserts the tip of the tube 11 into the expansion tube 12 of the other tube 10 as shown in FIG. 1 and then places the packing 24 on the outside of both tubes 10 and 11. A plurality of pipe joints 20 are fastened by bolts on the outside.

At this time, the pipe joint 20 has a packing 24 is located at one side in the inner groove 23 formed in the inner side, and the projection jaw (12a) of the expansion pipe 12 is located at the other side of the locking jaw ( The technique is described which can prevent the flow of the pipe in the axial direction and reduce the risk of fire due to non-welding by being caught and supported by 21) (22).

However, unlike the prevention of the flow in the axial direction of the tube, one side of the locking jaw (21) 22 is not supported in the axial direction, but simply fixed by the bolt nut fastening means, so frequent vibration when buried under the road where the vehicle moves Due to this, it is loosened in the axial direction, and the position of the packing 24 is separated, thereby causing a problem of water leakage.

In addition, the only means capable of supporting the flow of the pipe is only the protruding jaw 12a of the expansion pipe 12, there was a problem that the durability can be reduced by a strong impact.

The present invention has been invented to solve the above problems, the purpose of which can be connected to the exact position of the joint of each pipe that can be generated during the general joint piping construction, and the pipe departure by deformation of the expansion pipe joint It is an object of the present invention to provide a bidirectional expansion pipe and a joint structure thereof that can be prevented.

The present invention for achieving the above technical problem is an expansion pipe formed to include an inclined portion extending end is formed and an expansion pipe end formed in the inclined portion; A plurality of joints having an end surface formed in an annular shape to surround the connection portions of the opposed expansion pipes and fastened to each other by being bolted to each other; It is inserted into the inside of the joint, and continues from the inside of the joint to cover the fastening end surface, a plurality of packing coupling grooves are provided in one of the coupling end surface portion of the joint, the other end of the coupling end portion is provided in the packing coupling groove A packing made of a synthetic rubber material having a packing coupling protrusion to be engaged; And a control unit.

In addition, the joint, the inclined engaging jaw having an inclined surface corresponding to the inclined portion so that the opposed expansion pipe is tightly coupled to each other; It is characterized in that it is formed.

The packing is independent of the joint to cover the fastening end surface, characterized in that the packing provided with the packing coupling groove and the packing coupling projection.

In addition, the bag is formed in a cylindrical shape is inserted into the inner end of the expansion tube, the contact bag formed with a watertight protrusion protruding so as to be watertight in contact between the end surface of the opposite expansion end portion; And further comprising:

In addition, the expansion pipe, a pipe coupling protrusion at both ends thereof is formed and the joint, a pipe coupling groove which is engaged with the pipe coupling projection so that the opposite expansion pipe 200 is firmly coupled; Characterized in that formed.

In addition, the expansion pipe, grooved grooves at both ends thereof are formed; the joint, the grooved projection engaging with the grooved groove so that the opposite expansion pipe is tightly coupled; Is formed.

In addition, the guard pipe is welded to the inside of the expansion pipe end formed in a cylindrical shape so that it can be easily fitted with the expansion pipe end of the other end without shaking; It is characterized in that the configuration further included.

In addition, the joint is characterized in that made of any one material of cast iron, chrome, silver, nickel, gold, aluminum, tin or their alloys or nylon, plastic.

In addition, the packing, a plurality of packing convex portion of the convex shape formed on the back so as to prevent the leakage by pressing the packing when the joint is fastened; It is characterized in that the configuration is further included.

The joint may further include a plurality of convex convex portions formed on a bottom surface of the joint so that the packing is pressed and pressed to prevent leakage; It is characterized in that the configuration is further included.

In addition, the joint is provided with a joint coupling groove therein, and the packing is characterized in that the joint coupling protrusion is provided in a corresponding shape to be engaged with the joint coupling groove.

In addition, the expansion pipe is characterized in that made by welding or melting a wide tube with a radius of the inclined portion to the general tube in the form of a tube that is integrally extended to have the inclined portion.

In addition, the expansion pipe end is bent in a "b" shape at one end characterized in that it further comprises a water port for forming a die integrally with the expansion pipe so that the expansion pipe end of the other end can be inserted into the mold.

In addition, the expansion end is characterized in that the inclination angle is formed so that the other end can be easily assembled when it is inserted into the water port.

According to the bidirectional expansion pipe of the present invention and its joint structure, the flow of the pipe is prevented as compared to the conventional joint structure in which the expansion pipe and the water port are simultaneously held on both sides in the transverse direction and fixed to one end, By reducing the weight, the construction cost can be reduced and the difficulty of the work can be improved.

1 is a perspective view of a conventional pipe and pipe joint
2 is a perspective view of a joint according to the present invention;
3 is a sectional perspective view of a joint according to the present invention;
Figure 4 is a cross-sectional perspective view according to an embodiment of the joint according to the present invention
5 is a cross-sectional perspective view according to another embodiment of the joint according to the present invention
Figure 6 is a cross-sectional perspective view according to another embodiment of the joint according to the present invention
Figure 7 is a perspective view of another embodiment of the joint according to the present invention, (a) is a cross-sectional view of the joint, (b) is a side view of the joint
8 is a cross-sectional perspective view according to another embodiment of the joint according to the present invention
9 is a cross-sectional perspective view according to another embodiment of the pipe and the joint according to the present invention
10 is a cross-sectional perspective view according to another embodiment of the pipe and the joint according to the present invention
11 is a cross-sectional perspective view according to another embodiment of the pipe and the joint according to the present invention
12 is a perspective view of a guard tube according to the present invention
13 is a perspective view of an improved guard tube according to the present invention;
14 is a perspective view of an improved backpack according to the present invention;
15 is a cross-sectional view showing the expansion end according to the present invention.
16 is a cross-sectional view showing the expansion end according to the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

First, as shown in FIGS. 2 and 3, the bidirectional expandable pipe and the joint structure according to the present invention extend in the inclined portion 210 and the inclined portion 210 in which an end is extended in the expanded pipe. Expansion pipe 200 is formed, including the expansion pipe end 220 formed; A synthetic rubber packing 150 is inserted therein, and a plurality of joints 100 are formed in an annular shape by bolts and fastened to each other to firmly fix the pipes to each other.

The joint 100 has an inclined catching jaw 120 having an inclined surface that is in contact with the inclined portion 210.

The joint 100 is preferably a cast iron, chromium, silver, nickel, gold, aluminum, tin or alloys of various materials, such as alloys thereof, or any kind of material of the resin, such as nylon, plastic Or it can be formed widely according to a characteristic.

Both sides of the joint 100 is provided with an inclined engaging jaw 120 having an inclined surface to contact the inclined portion 210 provided in the expansion pipe 200, the joint 100 is the expansion pipe 200 The effect of preventing the flow of the pipe is greater than that of the conventional joint structure, which is connected to and fixed to both ends by being simultaneously supported on both sides in the transverse direction.

The packing 150 is made of a synthetic rubber material having elasticity and is positioned inside the joint 100 so that when the joint 100 is bolted to the outside of the expansion end 220, the packing 150 is also compressed. This prevents leakage of fluid flowing into the tube.

In this case, the bag 300 is formed in a cylindrical shape so as to fit inside the expansion end portion 220, so that it can be surely sealed with the packing 150.

In addition, the bag 300 is provided with a bag 300 is formed with a water-tight projection (310) protruding to be watertight in contact with the end of the expansion tube portion 220 is to be assured water tightly assisted with the packing 150. Can be.

In addition, the bag 300 may be composed of metals, synthetic resins.

As an example, as shown in FIG. 4, a plurality of convex packing convex portions 151 are formed on a rear surface of the packing 150, and the packing convex portions 151 are pressed and compressed when the joint 100 is fastened. Effectively prevents leaks.

As an example, as shown in FIG. 5, a convex joint convex portion 101 is formed on an inner bottom surface of the joint 100 so that the convex convex portion 151 is formed when the joint 100 is fastened. By pressing 150), there is an effect that can effectively prevent leakage.

In general, if the weight of the joint is heavy during piping work, the pipe construction work will be difficult. Therefore, in order to reduce the weight of the joint, as shown in FIG. 6, the thickness of the inclined locking jaw 120 provided in the joint 100 is in contact with the entire area of the inclined portion 210 formed in the expansion pipe 200. By reducing the interval at a predetermined interval can reduce the construction cost and improve the difficulty of the work.

The packing 150 located inside the joint 100 may be leaked due to its position being slightly displaced by pressure if the joint 100 is not accurately positioned inside when the joint 100 is fastened to the bolt 400. have.

Therefore, as shown in FIG. 7, in the fastening end surface 130, which is a portion at which the bolt of the joint 100 is fastened, the packing 150 located in the joint 100 is inside the joint 100. Continued from to cover the fastening end surface 130, and also the packing coupling groove 152 and the packing coupling projection 153 is provided so as to engage with each other when the bolt is tightened or the tube is distorted, the position is also separated from the vibration It is not possible to prevent the occurrence of leakage, and to prevent the inflow of impurities in the upper portion.

In another embodiment, the packing 150 may cover the fastening end surface 130 independently of the joint 100, and the packing coupling groove 152 and the packing coupling protrusion 153 may be provided.

In addition, as shown in FIG. 8, the joint coupling groove 102 is provided inside the joint 100 so as to prevent the positional deviation of the packing 150 located inside the joint 100. After the joint coupling protrusion 154 is provided on the packing 150 in a shape corresponding to the joint coupling groove 102, the joint 100 is fastened and closely adhered to the joint coupling groove 102, thereby preventing slippage and detachment even under strong impact or torsion. Has the effect of being prevented.

In addition, as shown in Figure 9, the structure of the expansion pipe 200 has a wide radius with the inclined portion 210 in the general pipe not in the form of a tube integrally extended to have the inclined portion 210. It can be done by welding or melting the tube.

As another embodiment, as shown in FIG. 10, the joint 100 is fastened to the expansion pipe 200 to prevent the positional deviation due to frequent external shocks and to increase the durability of the expansion pipe end 220. A pipe fitting protrusion 260 welded to the pipe 100 is provided, and the joint 100 is inserted into the joint 100 so as to be inserted into and engaged with the expansion pipe 200 in response to the pipe coupling protrusion 260. ) Is provided.

In this case, although not shown in the drawing, the pipe fitting protrusion 260 is installed in the expansion pipe end 220 is fixed by the joint 100, the formation position is the inclined portion rather than the expansion pipe 220 It will be apparent that it is welded to the 210 and the anti-separation and durability can be improved by the inclined locking jaw 120 and the pipe coupling groove 160 of the joint 100.

As another embodiment, as shown in FIG. 11, after the joint 100 is fastened to the expansion pipe 200 to prevent deviation from position due to frequent external shock and increase durability, the expansion pipe as shown in FIG. 10. In order to prevent welding or melting due to the material of the pipe 200 or its characteristics, a grooved groove 270 is provided at both ends of the expansion pipe portion 220, and the joint 100 has the grooved groove 270. In response to the expansion pipe 200 may be provided with a grooving protrusion 170 to be engaged when the bolt is fastened.

In this case, similarly, the grooved groove 270 is provided at the expansion end portion 220 and fixed by the joint 100, and the position thereof is provided at the inclined portion 210 instead of the expansion end portion 220. As described above, the inclination locking jaw 120 and the grooving protrusion 170 of the joint 100 may improve the separation and durability of the joint.

As an example, as shown in FIGS. 10 to 12, the extension pipe 220 of the expansion pipe 200 is welded to the inside of one end of the expansion pipe end 220 with a drawing pipe or a banded flat iron without shaking. Cylindrical guard tube 400 is formed so that it can be easily fitted to prevent the difficulty of fastening due to the positional deviation when the joint 100 is fastened to increase the ease of operation, it is possible to obtain the effect of preventing leakage.

In addition, as described above, instead of being welded to the inside of one end of the expansion tube portion 220, the cylindrical bag 300 may be inserted or the bag 300 formed with the watertight protrusion 310 may be inserted to provide compatibility. .

In this case, the guard tube 400 or the bladder 300 has a trapezoidal shape in the left and right cross-sections as shown in FIGS. 13 to 14, and can be easily inserted into the expansion end portion 220. Triangular, taping and rounding structures to ensure ease of entry will also be possible.

The guard tube 400 or the bladder 300 does not necessarily have to maintain an integral shape, and may be easily assembled by forming a ring by combining a plurality of components.

As another embodiment, as shown in FIG. 15, the pan bladder 300 or the guard tube 400 may be provided by having one end of the expansion tube portion 220 inwardly bent in a “b” shape. Instead of the function of, the water port 230 is formed integrally with the expansion pipe 200 and the grooving mold to increase the durability.

In addition, as shown in Figure 16, the other end of the expansion pipe portion 220 is provided with a gentle inclination so that it can be easily fitted when it is inserted into the water port 230 can be ensured the ease of assembly.

Embodiments of the bidirectional expandable pipe and the joint structure of the present invention described above are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art to which the present invention pertains. You can see that. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

10, 11: tube 12: expansion tube
12a: protruding jaw 20: pipe joint
21,22: Hanging jaw 23: Internal groove
24: Packing 100: Joint
101: joint convex portion 102: joint coupling groove
120: inclined locking jaw 130: fastening cross section
150: packing 151: packing iron
152: packing coupling groove 153: packing coupling protrusion
154: joint coupling protrusion 160: pipe coupling groove
170: grooved projection 200: expansion pipe
210: inclined portion 220: expansion pipe end
230: water polo 260: pipe joint projection
270: Grooving groove 300: Pan bag
310: watertight protrusion 400: guard tube

Claims (21)

An expansion pipe (200) formed including an inclined portion (210) having an extended end and an expansion pipe portion (220) extending from the inclined portion (210);
A joint 100 provided with a coupling end surface 130 such that a plurality is assembled to form an annular wrap around the connection portions of the opposing expansion pipes 200 and are fastened to each other by being bolted to each other;
Is inserted into the inside of the joint 100, continues from the inside of the joint 100 to cover the fastening end surface 130, a plurality of packing coupling grooves in the fastening end surface 130 portion of one side of the joint 100 152 is provided, the packing 150 made of synthetic rubber material is provided on the other end of the coupling end surface 130 is provided with a packing coupling projection 153 to engage the packing coupling groove 152;
Bidirectional expansion pipe and its joint structure, characterized in that comprising a. The method of claim 1,
The joint 100 is,
An inclined catching jaw 120 having an inclined surface corresponding to the inclined portion 210 so that opposed expansion pipes 200 are tightly coupled to each other; Bidirectional expansion pipe and its joint structure, characterized in that formed. The method of claim 1,
The packing 150 is,
Separately from the joint 100 to cover the fastening end surface 130, the packing is provided with a bidirectional expansion pipe and its joint characterized in that the packing provided with the packing coupling groove 152 and the packing coupling protrusion 153 is provided. rescue. The method of claim 1,
A bag 300 formed in a cylindrical shape fitted inside the expansion pipe end 220 so as to be watertight at the expansion pipe end 200; Bidirectional expansion pipe and its joint structure, characterized in that further comprises a. 5. The method of claim 4,
The bag 300 is,
Bidirectional expansion pipe and its joint structure, characterized in that the protruding watertight projection (310) is formed so as to be contacted between the cross-section of the opposite end portion 220 facing the watertight. 5. The method of claim 4,
The bag 300 is,
Bidirectional expansion pipe and its joint structure, characterized in that the left and right sides of the cross section is formed in a trapezoidal, triangular, taping or rounded structure so that it can be easily inserted into the expansion end 220. 5. The method of claim 4,
The bag 300 is,
Bidirectional expansion pipe and its joint structure, characterized in that to form an annular combination of a plurality of components for ease of assembling when entering the expansion pipe end 220. 5. The method of claim 4,
The bag 300 is,
Bidirectional expansion pipe and its joint structure, characterized in that the material is composed of metals, synthetic resins. 4. The method according to any one of claims 1 to 3,
The expansion pipe 200 is,
Both ends of the pipe projections (260); is formed
The joint 100 is,
A pipe coupling groove 160 engaged with the pipe protrusion 260 so that the opposite pipe 200 is tightly coupled; Bidirectional expansion pipe and its joint structure, characterized in that formed. 4. The method according to any one of claims 1 to 3,
The expansion pipe 200 is,
Grooving grooves 270 at both ends thereof are formed
The joint 100 is,
Grooving protrusion 170 that is engaged with the grooving groove 270 so that the opposite expansion pipe 200 is firmly coupled; Bidirectional expansion pipe and its joint structure, characterized in that formed. The method of claim 1,
A guard tube 400 formed in a cylindrical shape to be welded to the inside of the expansion pipe end 220 so that the expansion pipe 220 can be easily inserted into the other end of the expansion pipe 220 without shaking; Two-way expansion pipe and its joint structure, characterized in that further comprises. 12. The method of claim 11,
The guard pipe 400,
Bidirectional expansion pipe and its joint structure, characterized in that the left and right sides of the cross section is formed in a trapezoidal, triangular, taping or rounded structure so that it can be easily inserted into the expansion end 220. 12. The method of claim 11,
The guard pipe 400,
Bidirectional expansion pipe and its joint structure, characterized in that to form an annular combination of a plurality of components for ease of assembling when entering the expansion pipe end 220. 12. The method of claim 11,
The guard pipe 400,
Bidirectional expansion pipe and its joint structure, characterized in that the material is composed of metals, synthetic resins. The method of claim 1,
The joint 100 is,
A bidirectional expandable pipe and its joint structure, which is made of cast iron, chrome, silver, nickel, gold, aluminum, tin or alloys thereof or nylon or plastic. The method of claim 1,
The packing 150 is,
A plurality of packing convex portions 151 having convex shapes formed on the rear surface of the joint to press the packing 150 to be pressed to prevent leakage;
Bidirectional expansion pipe and its joint structure, characterized in that the configuration further comprises. The method of claim 1,
The joint 100 is,
A plurality of convex convex portions 101 of a convex shape formed on a bottom surface of the packing 150 to be pressed and pressed to prevent leakage when the joint 100 is fastened; Bidirectional expansion pipe and its joint structure, characterized in that the configuration further comprises. The method of claim 1,
The joint 100 is,
The joint coupling groove 102 is provided therein,
The packing 150 is,
Bidirectional expansion pipe and its joint structure, characterized in that the joint coupling protrusion 154 is provided in a shape corresponding to the engagement with the joint coupling groove (102). The method of claim 1,
The expansion pipe 200 is,
Bidirectional expansion pipe, characterized in that made by welding or melting a tube with a wide radius having the inclined portion 210 by welding or melting to a general pipe not in the form of a tube integrally extended to have the inclined portion 210 And its joint structure. The method of claim 1,
The expansion end portion 220,
A water tool unit 230 which is bent in a shape of “b” at one end to be integrally formed with the expansion pipe 200 so that the other end of the expansion pipe 220 may be inserted into the mold;
Bidirectional expansion pipe and its joint structure, characterized in that further comprises a. The method of claim 20,
The expansion end portion 220,
Bidirectional expansion pipe and its joint structure, characterized in that the inclination angle is formed so that the other end can be easily assembled when the other end is attached to the water port (230).

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