KR20060057240A - Tube fitting for stainless steel tubing - Google Patents

Abstract

One-touch stainless steel pipe fittings according to the present invention is a stainless steel pipe; A housing configured to form at least one inlet / outlet for connecting the stainless steel pipe and an inner conduit connecting the inlet / outlet; A pressurizing device installed inside the inlet / outlet of the housing to prevent the inserted stainless steel pipe outer diameter from being pressed by the stopper, thereby preventing the stainless steel pipe from being separated from the housing; It is characterized in that it is configured to include a packing member coupled to the lower inner pipe of the pressurizing device to maintain the airtightness between the stainless steel pipe and the housing.

According to the present invention, the pipe is easily connected by simply inserting a stainless steel pipe into the inlet / outlet of the housing, and by using a separate pressure release port to release the pressurized state of the stopper, the pipe is easily disassembled. Even if you are not a skilled worker by making it easy to work, there is an effect that can lower labor costs.

Description

   One-touch stainless steel pipe fittings {TUBE FITTING FOR STAINLESS STEEL TUBING}

1 is a perspective view showing the outer structure of the one-touch stainless steel pipe fittings according to the present invention.

Figure 2 is a cross-sectional view showing the internal structure of the one-touch stainless steel pipe fittings according to the present invention.

Figure 3 is an exploded perspective view showing in detail the pipe pressurizing device structure according to the present invention.

Figure 4a to 4b is a cross-sectional view showing a state of separating the stainless steel pipe by releasing the pressure of the pipe pressurizing device of the present invention.

Explanation of symbols on the main parts of the drawings

110: housing 111: inlet / outlet

113: internal passage 115: expansion pipe

115a: inner inclined surface 117: termination hole insertion hole

119: packing groove 120: pressurizing device

121: coupling member 121a: guide groove

121b: Guide protrusion 123: plate spring

123a: tension generating portion 123b: connecting portion

124: metal ring 125: stopper

125a: tooth part 125b: wing part

127: horizontal ring 130: stainless steel pipe

140: packing member 150: termination

The present invention relates to a pipe fitting, and more particularly, to a one-touch stainless steel pipe fittings to facilitate the pipe connection work simply by inserting a stainless steel pipe into the inlet / outlet of the housing.

Recently, stainless steel, which is increasingly used as construction piping material, forms a passivation film (Cr2O3) having excellent protection in water, and thus has been attracting attention as an optimal material for water pipes because of excellent corrosion resistance and hygiene and excellent mechanical properties.

These stainless steel pipes are not easy to connect the pipe work so far depends on the welding method, the pipe connection work by the welding method as described above is inconvenient to be equipped with the equipment for welding, and also to weld In addition to the need for professional technical personnel, repair is difficult after welding, and there is an economic loss of destroying the existing pipe for repair work.

In addition, the welding part has a structure that is very vulnerable to impact, so there is a problem that the joint is broken even with small vibration or impact.

In order to solve the problem of the welding method, various non-welded joint methods such as telescopic movable or screw type, crimping type have been developed.

However, these non-welded joints are mostly imitations / modifications of foreign technology, which shows great limitations in satisfying all the conditions of the pipe fittings, and the structure is complicated, workability and performance are poor, and the conventional screw joint technology There is a problem without getting out of it.

Therefore, there is an urgent need to develop a one-touch stainless steel pipe fitting that requires no welding and can be connected in a simple manner without a screw structure.

An object of the present invention for solving the above problems is to provide a one-touch pipe fittings that can be easily connected to the pipe simply by inserting a stainless steel pipe into the inlet / outlet of the housing.

Another object of the present invention for solving the above problems is to provide a one-touch pipe fittings to facilitate the pipe disassembly operation by releasing the pressurized state of the stopper by using a separate pressure release port.

Another object of the present invention for solving the above problems is another object to provide a one-touch pipe fittings that enable work by unskilled workers without the need for specialized skills, such as welding or non-welding joint method. .

One-touch stainless steel pipe fittings according to the present invention for achieving the above object is a stainless steel pipe; A housing configured to form at least one inlet / outlet for connecting the stainless steel pipe and an inner conduit connecting the inlet / outlet; A pressurizing device installed inside the inlet / outlet of the housing to prevent the inserted stainless steel pipe outer diameter from being pressed by the stopper, thereby preventing the stainless steel pipe from being separated from the housing; It is characterized in that it is configured to include a packing member coupled to the lower inner pipe of the pressurizing device to maintain the airtightness between the stainless steel pipe and the housing.

Here, the housing, at least one or more inlet / outlet formed to connect the stainless steel pipe, an inner conduit connecting the inlet / outlet, expansion tube formed to gradually widen to the inner lower end of the inlet / outlet, And a termination hole insertion groove formed at an appropriate position so that the expansion pipe portion and the inner circumference of the upper inlet / outlet thereof communicate with each other, and a packing groove formed annularly on the lower inner pipe of the expansion pipe portion.

Here, the pressing device is formed to form a plurality of guide grooves in which the upper end of the cylindrical tubular body is appropriately cut, extend the appropriate width in the horizontal direction from the lower end of the guide groove, and then to form a guide protrusion made by bending a certain height upward again A coupling member, an elastic member inserted between the outer diameter of the coupling member and the guide protrusion, a plurality of stoppers stacked on the upper side of the elastic member and the guide protrusion of the coupling member, and laminated on the upper surfaces of the respective stoppers. And a horizontal ring configured to apply a uniform pressure to each stopper.

Here, the elastic member is characterized in that it consists of a plurality of springs formed at least one tension generating portion consisting of at least one pleat at equal intervals, the connecting portion connecting the tension generating portion is welded to the lower metal ring.

Here, the plate spring is characterized in that it is made of a stainless steel sheet having a high elasticity.

Here, the stopper is characterized in that the teeth formed in contact with the outer diameter of the stainless steel pipe to form a frictional force, forming a wing portion extending to the left and right sides of the toothed portion.

Here, the stopper is characterized in that the powder metallurgy using a stainless steel powder, heat treatment by a salt bath nitriding method to increase the surface strength, corrosion resistance, wear resistance and surface roughness.

Here, the packing member is characterized in that any one of the ring-shaped ring, O-type ring, X-shaped ring or Teflon to be used.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

1 is a perspective view showing the outer structure of the one-touch stainless steel pipe fittings according to the present invention, Figure 2 is a cross-sectional view showing the internal structure of the one-touch stainless steel pipe fittings according to the present invention, Figure 3 is a pipe according to the present invention An exploded perspective view showing the structure of a pressurizing device in detail.

One-touch stainless steel pipe fittings according to the present invention as shown in the figure is composed of a housing 110, a pressurizing device 120, a stainless steel pipe 130, a packing member 140.

The housing 110 may include at least one inlet / outlet 111 formed to connect the stainless steel pipe 130, an inner conduit 113 connecting the inlet / outlet 111, and the inlet / outlet. (111) The expansion pipe 115 formed to gradually widen toward the inner lower end, and the termination hole insertion hole 117 formed at an appropriate position so that the expansion pipe 115 and the inner circumferential edge of the upper inlet / outlet 111 thereof communicate with each other. And, it is composed of a packing groove 119 formed in an annular shape on the lower inner conduit 113.

The pressurizing device 120 forms a plurality of guide grooves 121a in which the upper end of the cylindrical tubular body is appropriately cut, extends an appropriate width in the horizontal direction from the lower end of the guide groove 121a, and then again has a predetermined height upward. Coupling member 121 to form a guide protrusion (121b) is formed by bending, the plate spring 123 is inserted between the outer diameter of the coupling member 121 and the guide protrusion 121b, and the plate spring 123 ) And a plurality of stoppers 125 stacked so as to be positioned at the guide protrusion 121b of the coupling member 121, and laminated on the upper surfaces of the respective stoppers 125 to apply a uniform pressure to each stopper 125. It consists of a horizontal ring 127 to enable.

At this time, the plate spring 123 is a stainless steel sheet which is arranged a plurality of tension generating portion (123a) made of at least one or more wrinkles at equal intervals, and the connecting portion (123b) connecting the tension generating portion (123a) integrally Is produced by.

In addition, each connection except the tension generating portion 123a is to be welded to the lower metal ring 124, so that the continuous elastic deformation in the tension generating portion (123a) is maintained.

In addition, by forming the wrinkles in the tension generating portion (123a) to be formed as two bends as shown in Figure 3, the stopper 125 is laminated stably, but the elastic action is made, but the shape is limited It is not possible to change anything.

The stopper 125 is composed of a toothed portion 125a formed to contact the outer diameter of the stainless steel pipe 130 to generate frictional force, and a wing portion 125b extending to the left and right sides of the toothed portion 125a.

In this case, the stopper 125 is powder metallurgy using stainless steel powder, and then heat treated by salt bath nitriding to increase surface strength, corrosion resistance, abrasion resistance and surface roughness, thereby effectively preventing the stainless steel pipe 130 from being separated. You can do it.

When described in detail with reference to the accompanying drawings for the operation of the present invention made of the above configuration as follows.

Figure 4a to 4b is a cross-sectional view showing the state of removing the stainless steel pipe by releasing the pressure of the pipe pressurization apparatus of the present invention.

First, the stainless steel pipe 130 is inserted into the inlet / outlet 111 of the housing. At this time, the stainless steel pipe 130 is inserted while generating a very slight friction with the teeth (125a) of the stopper (125).

This is because the inclination of the teeth 125a of the stopper 125 is made the same as the insertion direction, and when the stopper 125 is moved downward by the insertion force, the inclined surface 115a of the expansion pipe 115 is moved. As it moves along, as a result, the inner radius of the stopper 125 in contact with the stainless steel pipe 130 is widened, thereby enabling smooth insertion.

In addition, as the packing member 140 is inserted into the lower packing groove 119 of the expansion pipe 115, a sealing function of maintaining the airtight or watertightness between the stainless steel pipe 130 and the housing 110 is performed.

The stainless steel pipe 130 easily inserted as described above has a structure that cannot be separated without a separate termination work thereafter.

The restoring force of the plate spring 123 supporting the stopper 125 is applied at the same time that the stainless steel pipe 130 is inserted, and the stopper 125 is inclined along the inner inclined surface of the expansion pipe 115 by the restoring force. Is moved to the top to strongly compress the outer diameter of the stainless steel pipe (130).

At this time, the stronger the elastic force of the plate spring 123, the stronger the force acting to press the stainless steel pipe 130 of the stopper 125.

When the separation force to separate the stainless steel pipe 130 in the above state is applied, the teeth 125a of the stopper 125 brakes the outer surface of the stainless steel pipe 130 by a rake action. As the separation force becomes stronger, the stopper 125 moves upward along the inclined surface to grab the stainless steel pipe 130 with more powerful force.

As such, the pipe fitting structure of the present invention has a structure in which the coupling force is doubled as the separation force is strongly applied.

In addition, the present invention is not a structure in which the fitting and the stainless steel pipe is completely fixed, as in the coupling method by the screw type, welding, but has a structure that can flow between the fitting and the stainless steel pipe 130.

This is because a suitable clearance exists between the stainless steel pipe 130 and the inlet / outlet 111 of the housing 110, and the stopper 125 that substantially fixes the stainless steel pipe 130 is not an integral type but a separate type. It is because it has a structure in which the flow to a horizontal direction is made free to some extent.

The present invention can withstand the amplitude ± 12.5mm as a result of the vibration test, it is very effective for disaster situations such as earthquakes, and at the same time airtightness is maintained without damage and damage even at water pressure of 80kgf / ㎠, high pressure It can be used for water piping.

Hereinafter, the operation of separating the stainless steel pipe 130 of the present invention from the housing 110 according to the pipe replacement operation, etc., first, the separate termination hole 150 as shown in FIG. The horizontal ring 127 is pressurized by being inserted into the termination hole insertion hole 117 formed at the inlet / outlet 111 of the 110. At this time, the termination hole insertion hole 117 is formed in at least two places so as to be formed at equal intervals so that the horizontal ring 127 as possible to be pressed to a uniform pressure.

When the horizontal ring 127 is pressed, a uniform pressing force is transmitted to the stoppers 125 stacked in the lower four directions, and simultaneously moves downward while compressing the plate spring 123.

At this time, as the stopper 125 is moved downward along the inner inclined surface 115a, the radius is widened, and the pressing force of the stainless steel pipe 130 is loosened so that the stainless steel pipe 130 can be easily separated.

At this time, the stopper 125 has a structure in which the toothed portion 125a is inserted into the guide groove 121a of the coupling member 121 and the wing portion 125b is guided by the guide protrusion 121b.

The present invention has the convenience that anyone can easily work if you have only a separate termination 150 even during the pipe separation operation.

This is very economical because it does not require specialized skills, such as in the welding or non-welding joint method and can be easily worked even if not skilled workers, it is possible to lower the labor cost.

In addition, the present invention can be applied to the stainless steel pipe piping in the steel pipe diameter 13mm ~ 300mm range or more, by making a strong plate spring using the elasticity of the high elastic stainless steel sheet material.

In addition, the present invention as described above is applicable to all pipes, such as general water pipes and gas pipes, industrial / chemical pipes, LNG ship pipes.

Through the technical contents of the present invention having the above configuration, those skilled in the art can recognize that various changes and modifications can be made without departing from the technical spirit of the present invention.

Therefore, the true technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

The present invention has the following effects.

First, the present invention has an effect that the work efficiency is improved as the pipe connection is made easily by simply inserting a stainless steel pipe into the inlet / outlet of the housing.

Second, the present invention, even when replacing the connected stainless steel pipe or pipe dismantling work, by using a separate pressure release port to release the pressure of the stopper, there is an effect that the pipe disassembly operation is easily performed.

Third, the present invention does not require specialized skills, such as in welding or non-welding joint method, it is possible to work easily even if not skilled, there is an effect that can lower labor costs.

Claims (8)

Stainless steel pipe; A housing configured to form at least one inlet / outlet for connecting the stainless steel pipe and an inner conduit connecting the inlet / outlet; A pressurizing device installed inside the inlet / outlet of the housing to prevent the inserted stainless steel pipe outer diameter from being pressed by the stopper, thereby preventing the stainless steel pipe from being separated from the housing; A packing member coupled to the lower inner pipe of the pressurizing device to maintain airtightness between the stainless steel pipe and the housing; One-touch stainless steel pipe fittings, characterized in that consisting of a configuration. The method of claim 1, The housing may include at least one or more inlet / outlet formed to connect a stainless steel pipe, an inner conduit connecting the inlet / outlet, an expansion pipe formed to gradually widen to an inner lower end of the inlet / outlet, and the expansion pipe. And a termination hole insertion groove formed at an appropriate position to communicate the inner circumference of the upper inlet / outlet of the upper end thereof, and a packing groove formed annularly on the lower inner conduit of the expansion pipe. Tubing fittings. The method of claim 1, The pressurizing device is formed to form a plurality of guide grooves in which the upper end of the cylindrical tubular body is appropriately cut, extend the appropriate width in the horizontal direction from the lower end of the guide groove, and then form a guide protrusion formed by bending a certain height upward again. A member, an elastic member inserted between the tubular outer diameter of the coupling member and the guide protrusion, a plurality of stoppers stacked on the upper side of the elastic member and the guide protrusion of the coupling member, and laminated on the upper surfaces of the respective stoppers, respectively. A one-touch stainless steel pipe fitting comprising a horizontal ring for applying a uniform pressure to the stopper. The method of claim 3, wherein The elastic member is a one-touch stainless steel pipe, characterized in that composed of a plurality of tension springs made of at least one corrugated at equal intervals, the plate spring formed to be welded with the lower metal ring connecting the tension generating portion Tubing fittings. The method of claim 4, wherein The plate spring is a one-touch stainless steel pipe fittings, characterized in that made of stainless steel sheet having high elasticity. The method according to claim 1 or 3, The stopper is a one-touch stainless steel pipe fittings, characterized in that for forming a toothed portion in contact with the outer diameter of the stainless steel pipe to generate a friction force, and forming a wing portion extending to the left and right sides of the toothed portion. The method of claim 6, The stopper is a one-touch stainless steel pipe fittings, characterized in that the powder metallurgy using a stainless steel powder, heat-treated by the salt bath nitriding method to increase the surface strength, corrosion resistance, wear resistance and surface roughness. The method of claim 1, The packing member is a one-touch stainless steel pipe fittings, characterized in that any one of the ring-shaped, O-shaped ring, Ｖ-shaped ring or Teflon to be used.

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