KR102584144B1 - A coated stainless steel pipe with a joint with improved sealing force and prevention of separation of sealing parts, and an installation method thereof - Google Patents

Abstract

The present invention relates to 'a coated stainless steel pipe equipped with a fitting that prevents the separation of the sealing part and improves the sealing force, and a method of installing the same';
In particular, an elastic pressure chain leak prevention device is provided at the joint of the steel pipe flange, including the stainless steel pipe supplied with water supply, water pipe water, and industrial water.
The gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges at the pipe joint, is prevented from coming off and the sealing force is strengthened. When the gasket is compressed, the exact center is maintained between the joints of the two pipes, resulting in high fluid pressure. Despite this, the hydraulic pressure and airtightness of the joint between the two pipes are strengthened, preventing fluid leakage.
With a non-destructive joint structure, the surface of the steel pipe with the joint, which is a flared surface processed with a flange at the end of the pipe, is covered with a resin coating layer, further enhancing the durability of the steel pipe with the joint.
The one-touch type makes it easier to install the joints of multiple steel pipes, improving workability and making it easier to use; It relates to 'a coated stainless steel pipe equipped with a fitting that prevents separation of the sealing part and improves sealing force, and a method of installing the same.'

Description

A coated stainless steel pipe with a joint with improved sealing force and prevention of separation of sealing parts, and an installation method thereof}

The present invention relates to 'a coated stainless steel pipe equipped with a fitting that prevents the separation of the sealing part and improves the sealing force, and a method of installing the same';

More specifically, an elastic pressure chain leak prevention device is provided at the joint of a steel pipe flange including a stainless steel pipe supplied with water supply, water pipe water, and industrial water.

The gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges at the pipe joint, is prevented from coming off and the sealing force is strengthened. When the gasket is compressed, the exact center is maintained between the joints of the two pipes, resulting in high fluid pressure. Despite this, the hydraulic pressure and airtightness of the joint between the two pipes are strengthened, preventing fluid leakage.

With a non-destructive joint structure, the surface of the steel pipe with the joint, which is a flared surface processed with a flange at the end of the pipe, is covered with a resin coating layer, further enhancing the durability of the steel pipe with the joint.

One touch It is easier to install the joints of a plurality of steel pipes, improving workability and making it easier to use; It relates to 'a coated stainless steel pipe equipped with a fitting that prevents separation of the sealing part and improves sealing force, and a method of installing the same.'

Generally, there are two methods for connecting pipes, including steel pipes, that are used: a method using a grip-type device, a method using a groove joint device, a method of connecting by combining flanges, and a method of directly connecting two pipes by welding the joint portion. A method of connecting a joint by inserting a joint into a ring welded to the outer peripheral surface of the pipe and a method of inserting the other pipe into the expanded portion of one pipe are used.

In addition, the pipe joints including steel pipes for supplying water for water supply and water supply pipes and industrial water in the prior art are composed of a structure in which a plurality of pipe joints are positioned and installed on a plurality of pipes for left and right connection including steel pipes. Became;

In particular, the joint of the pipe joint between the two pipes is composed of a flat surface, and the surface of the pipe, including the steel pipe, is screwed or machined, causing a problem in that the mechanical performance of the pipe, including the steel pipe, is deteriorated. ;

When the packing (gasket) is inserted between the joints of multiple pipes and tightened with a tightening nut, the leak-prevention packing (gasket) is compressed and deviates from the center position or is deformed, causing water leakage and corrosion of the pipe when subjected to fluid pressure. ;

Since it is inconvenient to install a plurality of pipe joints on a plurality of pipes for left and right connection, workability is significantly reduced, the number of man-hours for installation is increased, and problems are occurring that make it inconvenient to use.

Accordingly, as a pipe joint to improve the above problem, Korean Patent Publication No. 2010-0046104 (loose flange type pipe joint) is disclosed.

As shown in Figure 1;

Domestic published patent No. 2010-0046104 ‘Loose flange type pipe joint (1)’,

The plane of the loose flanges 2, 2' made of metal is roughly donut-shaped, and is formed separately from the pipes 3, 3 to be connected, and the pipes 3, 3 are metal pipes of the same or similar diameter.

Two or more bolt installation holes (5) are installed at equal intervals in the circumferential direction on the flange (2), the inner diameter of the flange is larger than the outer diameter of the connection pipe (3), and a bolt passing through the inner circumferential surface of each installation hole (5) is installed at equal intervals. The diameter of the virtual circle is larger than the outer diameter of the flange portion 7 of the pipe 3 and the inner diameter of the reinforcing ring 8.

The flange (2) is a split type loose flange (not shown) and is fitted into the pipe (3) after flaring the end of the pipe.

The pipes (3, 3) on both sides face the surface of the flange portion (7) with the reinforcing ring (8) and the elastic gasket (10) sandwiched between them, and penetrate the mounting hole (5) of the flange and the reinforcing ring (8). Pass the bolt (14) through the hole (not shown) and temporarily secure it with the nut (16).

The reinforcement ring (8) can be accurately positioned by passing the bolts (14) through the two through holes, and after positioning, the four bolts (14) can be tightened with the nuts (16).

The elastic gasket 10 is made of rubber or plastic with high elasticity, and its cross-section is a rectangular shape with ribs arranged in an approximately V shape. The outer diameter of the elastic gasket (10) is approximately equal to the inner diameter of the reinforcing ring (8), and its inner diameter is set to be equal to or slightly larger than the inner diameter of the connecting pipe (3).

In the elastic gasket 10, since the cross-section is a rectangular shape with a substantially V-shaped lip, the inner circumferential center portion of the cross-section is slightly concave, and this concave portion causes the elastic gasket 10 to be compressed by the pressure inside the pipe. The side surface touches the surface of the flange portion of the pipe (3), making it easy for the outer peripheral surface to be compressed toward the reinforcing ring (8). In the cross section of the gasket 10, the lip portion extends diagonally downward and outward, and the gap between the ends of both lip portions is larger than the axial width of the gasket 10, so that the side of the gasket 10 is connected to the pipe. It is easier to adhere more closely to the surface of the flange part (3).

The round annular reinforcement ring (8) has a rectangular cross-section. The reinforcement ring (8) is made of stainless steel, carbon steel, or casting. In the case of carbon steel or casting, anti-corrosive surface treatment such as zinc plating or resin coating may be performed.

The reinforcement ring 8 is provided with extension parts that protrude outward in a direction opposite to the radial direction, and bolt installation holes are provided on each of the extension parts.

The extension part has a tongue-shaped planar shape with a semicircular periphery, and has a circular bolt installation hole at its center.

However, since the flange of this conventional loose flange type pipe joint is formed in a circular shape, work efficiency is reduced by bending the pipe after insertion before bending the pipe, and there is a problem in that it is not easy to move and store;

Damage and corrosion of the flanges, bolts, and nuts of the pipe occur, while the air and water tightness of the pipe deteriorates, and corrosion of the pipe occurs due to fluid leakage;

It is difficult to manufacture as it is a product that is a combination of a steel pipe standardized at a manufacturing plant and a flange, which is a joint, as the pipe is bent after inserting a joint before bending the pipe;

The flange joint is a general flange joint method, which requires a lot of bolt work, which extends construction and processing time and increases construction costs;

When dismantling or reinstalling a flange, which is a joint, problems arise such as inconvenient maintenance, significantly reduced workability, increased man-hours for installation, and inconvenient use.

also, Japanese Patent Publication No. 2003-287172 (20031010) states,

A second sleeve ( 11) and the other steel pipe 2a, which is provided in contact with the flange and is formed integrally with the small diameter portion 7 on which the tool attachment portion 9 is formed on the outer circumference and the end of the small diameter portion and is connected to the female thread portion 15 of the cap nut. A first sleeve (5) provided with a large diameter portion (6) having a male thread portion (8) formed on the outer periphery to be screwed together,

The edge wall portion is provided on the outside of the first and second sleeves and engages the large diameter portion of the second sleeve.

A cap nut (14) including (16) and a female thread portion (15) threaded to the male thread portion of the first sleeve,

Consisting of packing (19) mounted between flanges (4) of stainless steel pipes (2a, 2b),

『It is composed of a pipe joint device in which packing 19 is installed between flanges 4, which are joints of a plurality of steel pipes 2a and 2b.』;

A small diameter portion (7) on which the tool attachment portion (9) is formed and a large diameter portion (6) formed integrally with the end of the small diameter portion and having a male thread portion (8) formed on the outer circumference to be screwed onto the female thread portion (15) of the cap nut. A second sleeve (11) provided with a first sleeve (5) and a large-diameter portion (12) integrally formed at the end of the small-diameter portion (13) and engaged with the edge wall portion (16) of the cap nut (14). and a cap nut 14, and a packing 19 is mounted between the flanges 4, which are joints of a plurality of steel pipes 2a and 2b,

When tightening with the cap nut (14) with the packing (19) inserted, the space between the flange (4) and the cap nut (14) is not secured due to a joint structure;

When the packing (19) partially flows and is compressed by the tightening force between the flanges (4), and is displaced from the center position or deformed and subjected to fluid pressure, water leakage and corrosion of the steel pipe occur;

It is a joint structure in which a space with a wider connection area than the connection area of the packing is not formed between the flange 4, which is the joint of the plurality of steel pipes 2a and 2b, and the cap nut 14,

It is composed of a pipe joint device that corresponds to the prior art, which has the following problems: it is inconvenient to install the packing (19), which significantly reduces workability, increases the number of man-hours for installation, and makes it inconvenient to use;

In addition, Japanese Patent Publication No. 2021-004643 (20210114),

A screw-type pipe joint in which a stepped step is formed on the outer peripheral surface of the sleeve so that the wall end 132 of the second circumference of the nut 130 is coupled to the flange 124 of the sleeve 120,

A configuration in which the packing inserted between the flanges 124 is compressed by tightening the nut 130,

『Consisting of a pipe joint device in which packing is mounted between multiple pipe flanges 124』;

In addition, when the packing is tightened with the nut 130 between the flanges 124 of a plurality of pipes, a space with a larger connection area compared to the connection area of the packing is created between the flanges 124 of the plurality of pipes and the nut 130. Due to this unformed joint structure,

When the packing partially flows and is compressed by the tightening force between the flange 124 and the nut 130 and is displaced from the center position or deformed and subjected to fluid pressure, water leakage and corrosion of the pipe occur;

It is composed of a piping joint device that corresponds to the prior art, which has the problems that it is inconvenient to install the packing, which significantly reduces workability, increases the number of man-hours for installation, and is inconvenient to use.

In particular, 'multiple pipe joints (joints) and their installation method' of the prior art, including the above-mentioned Korean Patent Publication No. 2010-0046104, Japanese Patent Publication No. 2003-287172, and Japanese Patent Publication No. 2021-004643. silver;

Watertightness and airtightness are reduced due to the packing being deviated from the center position or deformed, making the pipe vulnerable to leakage and water pressure when subjected to fluid pressure, and being unsuitable for vibration or transport of high-temperature fluids;

Problems such as loss of durability and rust occurring due to corrosion due to damage to the surface of the pipe due to processing of the flange portion on both sides of the pipe;

The problem of quality deviation depending on the level of processing skill;

As processing facilities are installed separately at construction sites, and moving and processing facilities are installed separately, power devices including electricity are essential, and problems of inconvenience in use are occurring.

Therefore, the gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges, which is the joint of the pipe, is prevented from coming off and the sealing force is strengthened. When the gasket is compressed, the exact center is maintained between the joints of the two pipes, and the high Despite the fluid pressure, the hydraulic pressure and airtightness of the joint between the two pipes are strengthened, preventing fluid leakage.

With a non-destructive joint structure, the surface of the steel pipe with the joint, which is a flared surface processed with a flange at the end of the pipe, is covered with a resin coating layer, further enhancing the durability of the steel pipe with the joint.

The one-touch type makes it easier to install the joints of multiple steel pipes, improving workability and making it easier to use; There is an urgent need for the development of ‘pipe joints and pipe joint installation methods that facilitate their installation.’

The problem of the prior art is solved by the 'coated stainless steel pipe with a fitting with improved sealing force and prevention of separation of the sealing part and its installation method' of the present invention;

The gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges at the pipe joint, is prevented from coming off and the sealing force is strengthened. When the gasket is compressed, the exact center is maintained between the joints of the two pipes, resulting in high fluid pressure. Despite this, the hydraulic pressure and airtightness of the joint between the two pipes are strengthened, preventing fluid leakage.

It is a non-destructive joint structure, and the surface of the steel pipe with a joint where the end of the pipe is a flared surface processed with a flange is covered with a coated or applied resin coating layer. The durability of steel pipes with joints is further strengthened,

The one-touch type makes it easier to install the joints of multiple steel pipes, improving workability and making it easier to use; The purpose of the present invention and the technical problem to be achieved by the present invention are to provide 'a coated stainless steel pipe equipped with a fitting that prevents the separation of the sealing part and improves the sealing force, and a method of installing the same.'

In the configuration of the present invention, the gasket (packing), which is a sealing part, is prevented from coming off and the sealing force is strengthened, so that the exact center is maintained between the joints of the two pipes when the gasket is compressed, so that the joints of the two pipes are maintained despite the high fluid pressure. Hydraulic pressure and airtightness are strengthened to prevent fluid leakage, and the joint of the steel pipe flange inserted inside the pocket bolt and the joint of other steel pipe flanges inserted into the tightening guide are equipped with a leak prevention device with an elastic pressure chain. become;

It is a non-destructive joint structure to protect the surface of the steel pipe and the circular pipe and ensure durability, and is composed of the composition of the present invention on the surface of the steel pipe provided with a joint where the end of the pipe is a flared surface processed with an "L"-shaped flange. The resin coating layer is coated with:

'Coated coated stainless steel pipe with a joint with improved sealing force and prevention of separation of the sealing part' of the present invention, which is configured as 『one-touch installation of joints of multiple stainless steel pipes is easier, improves workability, and is convenient to use』. class;

Of steps S1 to S5 of the present invention;

『Step S1:

A step in which a gasket, which is a sealing part, is inserted and installed between the flanges of a plurality of stainless steel pipes, each of which has flanges, which are joints of a plurality of stainless steel pipes:

Step S2:

A body made of stainless steel, rubber, or synthetic resin is mounted on one side of the flange, which is a joint of a plurality of stainless steel pipes with gaskets installed, and flange laminates provided at the top and bottom of the body are stacked on the outside of the flange, which is a joint of a plurality of stainless steel pipes, A step in which the outer surface of the flange is inserted and fixed into the flange fixing hole provided in the lower part of the flange laminate, and the water leak prevention device, which is an elastic pressure chain, is installed on the outside of the flange of the plurality of steel pipes:

Step S3: Step in which pocket bolts, tightening guides, and locking nuts are installed on the outside of a plurality of stainless steel pipes equipped with gaskets and water leak prevention devices:

Step S4: As the tightening guide moves forward to the pocket-type bolt, the flanges of multiple stainless steel pipes installed with gaskets and water-leakage prevention devices are inserted and installed inside the pocket-type bolt in a one-touch manner, and the tight fitting hole of the tightening guide is the tightening guide of the pocket-type bolt. In close contact with the contact surface, a water leak prevention device is pressed and installed horizontally on the outside of the flange of a plurality of stainless steel pipes, and a gasket is pressed and installed horizontally between the joints of the two pipes with the exact center maintained; ,

Step S5: A locking nut is installed on the outside of the pocket-type bolt and tightening guide, where the joint of multiple stainless steel pipes equipped with a gasket and a water-leak prevention device is inserted, and the locking nut is tightened so that the screw-type fastener of the locking nut tightens the pocket-type bolt. It is fastened to the sphere, and the gasket and water leak prevention hole are compressed vertically for the second time, completing the installation of the fitting. It consists of a 'coated stainless steel pipe equipped with a fitting that prevents the sealing part from coming off and improves the sealing force. By ‘Installation Method’; We strive to solve the above problems.

The problem of the prior art is solved by the 'coated stainless steel pipe with a fitting with improved sealing force and prevention of separation of the sealing part and its installation method' of the present invention;

Compared to pipes equipped with pipe joints of the prior art,

In particular, the gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges at the pipe joint, is prevented from coming off and the sealing force is strengthened.

When the gasket is compressed, the exact center is maintained between the joints of the two pipes, and the hydraulic pressure and airtightness of the joints of the two pipes are strengthened despite high fluid pressure, preventing fluid leakage;

As a non-destructive joint structure, the surface of the steel pipe with the joint, which is a flared surface where the end of the pipe is processed with a flange, is coated with a resin coating layer, which further enhances the durability of the steel pipe with the joint;

The one-touch method simplifies the joint work, reducing quality variation depending on skill level and enabling standardization;

It is easier to install joints of multiple steel pipes, improving workability and making it easier to use; It is a very useful invention.

Figure 1 is a cross-sectional view showing the configuration of a conventional loose flange pipe joint;
2 and 3 are exploded cross-sectional views showing the stainless steel pipe of the present invention.
Figure 4 is a combined cross-sectional view of the stainless steel pipe of the present invention;
Figure 5 is an installation cross-sectional view of the stainless steel pipe of the present invention;
Figures 6 and 7 are test reports from an accredited institution for hydraulic testing of the stainless steel pipe of the present invention;
Figure 8 is a schematic diagram showing step by step the installation method of the stainless steel pipe of the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached drawings, “Coated stainless steel pipe equipped with a fitting with improved sealing force and prevention of separation of the sealing portion, and its installation method.”

also, The corresponding components of the 'coated stainless steel pipe with a fitting with improved sealing force and prevention of separation of the sealing part and its installation method' constituting the present invention include;

' Solving the problems of the prior art,

In particular, as clearly shown by the hydraulic test test report of an accredited institution in Figures 6 and 7, when the locking nut is tightened by the water leak prevention device, which is an elastic pressure chain provided on the outside of the plurality of steel pipe flanges, which are joints of the pipes, the sealing gasket ( When the packing) is compressed, the exact center is maintained between the joints of the two pipes.

The gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges, which is the joint of the pipe, is prevented from coming off and the sealing force is strengthened. At the same time, when the gasket is compressed, the exact center is maintained between the joints of the two pipes, allowing for high fluid flow. Despite the pressure, the hydraulic pressure and airtightness of the joint between the two pipes are strengthened, preventing fluid leakage;

With a non-destructive joint structure, the surface of the steel pipe with the joint, which is a flared surface where the end of the pipe is processed with a flange, is covered with a resin coating layer, further enhancing the durability of the steel pipe with the joint;

The one-touch joint work is simplified, reducing quality variation depending on skill level and enabling standardization;

It is easier to install joints of multiple steel pipes, improving workability, and has an appropriate configuration that is easy to use; It is clarified that it consists of 'a coated stainless steel pipe equipped with a fitting that prevents the separation of the sealing part and improves the sealing force, and a method of installing the same';

The embodiment mentioned below is a preferred embodiment, and the present invention is not limited to this embodiment, and the 'joint for pipe fitting and its installation method', which consists of the technical idea of the same category, is the present invention. Make it clear that it is included in the rights.

2 and 3 are exploded cross-sectional views showing the stainless steel pipe of the present invention,

Figure 4 is a combined cross-sectional view of the stainless steel pipe of the present invention,

Figure 5 is an installation cross-sectional view of the stainless steel pipe of the present invention,

Figures 6 and 7 are test reports from an accredited institution for hydraulic testing of the stainless steel pipe of the present invention;

Figure 8 is a schematic diagram showing step by step the installation method of the stainless steel pipe of the present invention.

Hereinafter, the coated stainless steel pipe described in the present invention is;

A stainless steel pipe is provided with a steel pipe (10, 10') on which flanges (11, 11'), which are joints, are formed, and a resin coating layer (20) in which composite polyethylene resin is coated or applied to the surface of the flange (11, 11'). It means.

As shown in Figures 2 to 4;

Coated stainless steel with a joint with improved sealing force and prevention of separation of the sealing part of the present invention, installed between flanges 11, 11', which are joints of a plurality of stainless steel pipes 10, 10' to which water supply is supplied. Steel pipe (100)' is;

『 Inside the pocket, which is the insertion portion 32 provided inside the pocket-type bolt body 31, a plurality of steel pipes 10, 10' whose surfaces are provided with a resin coating layer 20, and a plurality of steel pipes 10, 10' A gasket (packing: 60), which is a sealing part, provided between the flanges (11, 11'), which are joint parts, and the flanges (11, 11', which are joint parts of a plurality of steel pipes), is inserted:

A water leak prevention port (70), which is an elastic pressurizing body, is provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes into which a gasket (packing: 60) is inserted:

When the contact port 42 of the tightening guide 40 provided on one side of the pocket-type bolt 30 moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30, a plurality of forces in the horizontal direction are applied. Flanges (11, 11'), which are joints of steel pipes (10, 10'), and flanges, which are joints of multiple steel pipes.

The gasket 60 provided between (11, 11') and the elastic pressure chain are transmitted to the water leak prevention port 70, and the gasket 60 and the water leak prevention port 70 are compressed into the inside of the pocket bolt 30, Fixed and:

When tightening the pocket type bolt (30), the tightening guide (40), and the locking nut (50) provided on the outside of the elastic pressure chain water leak prevention device (70), the pocket type bolt provided inside the lock nut body (51) The locking force is transmitted in the vertical direction to (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70), so that the pocket type bolt (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70) is fixed integrally:

The pocket bolt 30, the tightening guide 40, and the flange, which is a joint of a plurality of steel pipes.

By the water leak prevention device 70, which is an elastic pressure chain provided on the outside of (11, 11'), the gasket 60 is compressed in both horizontal and vertical directions to form a seal between the flanges (11, 11'), which are the joints of the two pipes. A more accurate center is maintained between:

When tightening or loosening the locking nut (50), the pocket bolt (30) and tightening guide

(40), the elastic pressure chain water leak prevention device (70) is assembled or disassembled,

Pocket type bolt (30), tightening guide (40), gasket (60), elastic pressure chain water leak prevention device

(70) is characterized in that it is composed of a coated stainless steel pipe (100) provided with a joint for easy assembly or disassembly on the flanges (11, 11'), which are joints of a plurality of steel pipes (10.10') in a one-touch manner.

In addition, the steel pipes (10, 10') and the pocket-type bolt (30), tightening guide (40), locking nut (50), gasket (packing: 60), and elastic pressure chain water leak prevention device (70) are;

1) Flanges (11, 11'), which are joints where the ends of a plurality of pipes are processed into "L"-shaped flanges, are formed on the surfaces of the steel pipes (10, 10') and flanges (11, 11'), respectively. Steel pipes (10, 10') made of stainless steel and provided with a resin coating layer (20) coated or coated with polyethylene resin;

2) The pocket-type body 31, which is a socket portion provided on the outside of the flange 11, 11, which is a joint portion coated or coated with the resin coating layer 20 of the steel pipe 10, 10', and the inside of the body 31. An insertion part 32 where the flanges 11, 11', which are joints of the steel pipes 10, 10', and a gasket (packing: 60) are inserted, and a tightening guide provided on one side of the main body 31 ( When 40) moves, the tightening guide's contact surface (33) moves and comes into close contact with the tightening guide's contact surface (33), and a screw-type fastener (34) is fastened to correspond to the screw-type fastener (52) of the locking nut (50). Pocket type bolt (30);

3) Close contact between the main body 41, which is provided on one side of the pocket-type bolt 30 and can move forward and backward with the pocket-type bolt 30, and the tightening guide of the pocket-type bolt 30, which is provided on the other side of the main body 41. When the contact port 42, which moves and comes into close contact with the surface 33, and the locking nut 50 provided on the outside of the main body 41 are stacked, the tightening guide lamination port 53 of the locking nut 50 is stacked and supported. A tightening guide (40) provided with a locking nut support member (43);

4) The pocket type bolt (30) is provided on the outside of the pocket type bolt (30) and the tightening guide (40).

and a main body 51 that can be locked and disassembled of the tightening guide 40, and a screw fastener 52 that is fastened to correspond to the screw fastener 34 of the pocket bolt 30 provided inside the main body 51. and a locking nut (50) provided with a tightening guide stacking member (53) that is laminated and supported on the locking nut support member (43) of the tightening guide (40) provided on one side of the screw-type fastener (52);

5) a gasket (packing: 60) provided between the joints (11, 11') of the steel pipes (10, 10');

6) It is provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes into which a gasket (packing: 60) is inserted, and when the tightening guide (40) moves forward, the contact port (42) of the tightening guide moves forward to form a pocket type. It consists of a fitting equipped with a water leak prevention device (70), which is an elastic pressurized body in close contact with the tightening guide contact surface (33) of the bolt (30), and a resin coating layer (20) in which composite polyethylene resin is coated or applied to the surface of the fitting. It is composed of provided fittings.

Therefore, when the tightening guide 40 moves forward, the contact port 42 of the tightening guide moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30, and the flanges 11 and 11', which are joints of a plurality of steel pipes, ) The elastic pressurizing chain provided on the outside of the water leak prevention port (70) is a pocket-type bolt.

It is compressed and fixed inside (30),

When the gasket (packing: 60) is compressed by the pocket-type bolt (30), the tightening guide (40), and the leakage prevention device (70), which is an elastic pressure chain provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes, A more accurate center is maintained between the flanges (11, 11'), which are the joints of the two pipes,

The elastic pressure chain leak prevention device (70) is compressed and fixed inside the pocket bolt (30), preventing the gasket (60), which is the sealing part, from coming off and having improved sealing power. It consists of a coated and coated stainless steel pipe (100).

In addition, the steel pipes 10 and 10';

The ends of the plurality of pipes (10, 10') are each formed with flanges (11, 11'), which are joints machined into "L"-shaped flanges,

The surfaces of the steel pipes (10, 10') and the flanges (11, 11') on which the flanges (11, 11'), which are joints, are formed.

It consists of a stainless steel steel pipe (10, 10') provided with a resin coating layer (20) coated or applied with a composite polyethylene resin.

In addition, of course, it can be made of a steel pipe made of a metal material other than stainless steel.

The resin coating layer 20 is;

It is a synthetic resin composition of ethylene polymer based on polyethylene for coating, and is composed of a composite polyethylene resin of 85 to 95% by weight of high-density polyethylene and 5 to 15% by weight of linear low-density polyethylene based on 100% by weight of polyethylene resin, and a lubricant and antioxidant. , It is composed of extruded composite polyethylene resin with an average density in the range of 0.920 to 0.950 g/cm3 in which additives, which are pigments including carbon black for improving weather resistance and coloring, are mixed and uniformly dispersed, and the flanges (11, 11'), which are joints, are mixed and uniformly dispersed. Formed steel pipe (10,10') and flange

(11,11'), as a resin coating layer (20) in which a composite polyethylene resin is coated or applied to the surface of the fitting;

Damage to the surface of the pipe due to processing of the flanges (11, 11'), which are joints on both sides of the steel pipe (10, 10'), and rust due to corrosion of the joint are prevented, durability and wear resistance are further enhanced, and the steel pipe (10, 10') , 10') or flanges 11, 11', and is composed of a resin coating layer 20 that strengthens the bonding force when coated or applied to the surface of the fitting.

The pocket bolt 30, which is the socket portion, is;

A pocket-type main body 31, which is a circular socket portion made of metal, provided on the outside of the flanges 11, 11 of the steel pipe on which the resin coating layer 20 is coated or applied, and a resin coating layer 20 provided on the inside of the main body 31. ) is coated or applied to the flange (11, 11') and the gasket (packing: 60), and the leakage prevention device (70), which is an elastic pressure chain provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes, is inserted. When the insertion part 32, which is a space, and the tightening guide 40 provided on one side of the main body 31 move forward, the contact port 42 of the tightening guide moves forward and comes into close contact with the tightening guide contact surface in the form of a smooth surface ( 33) and a screw-type fastener 34 that is fastened in correspondence with the screw-type fastener 52 of the locking nut 50 (for example, the screw-type fastener of the pocket-type bolt is a male screw-type, and the screw-type fastener of the locking nut is a male screw-type fastener). It is composed of a pocket-type bolt (30) in which the screw-type fastener of the female or pocket-type bolt is female-threaded and the screw-type fastener of the locking nut is male-threaded.

The tightening guide 40 is;

A circular metal body 41 provided on one side of the pocket bolt 30 and capable of moving forward and backward with the pocket bolt 30, and a pocket bolt 30 provided on the other side of the body 41. The contact port 42 in the form of a smooth surface that moves forward and comes into close contact with the tightening guide contact surface 33 and the locking nut 50 provided on the outside of the main body 41 act as a tightening guide for the locking nut 50 when stacked. It consists of a tightening guide 40 provided with a locking nut support 43 in the form of a smooth surface on which the lamination sphere 53 is laminated and supported,

Therefore, the pocket-type bolt 30 and tightening guide 40 of the present invention are;

In particular, a gasket (packing: 60) and a water leak prevention device 70, which is an elastic pressure chain provided on the outside of the flange, which is a joint of a plurality of steel pipes, is inserted,

When the contact port 42 of the tightening guide 40 moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30, the horizontal force is applied to the flange at the joint of the plurality of steel pipes 10 and 10'. (11, 11') and the gasket 60 provided between the flanges 11, 11', which are joints of a plurality of steel pipes, and the elastic pressure chain is transmitted to the water leak prevention device 70, and the gasket 60 and the water leak prevention device ( 70) is pressed and fixed to the inside of the pocket bolt 30:

A one-touch type gasket (packing: 60) provided between the joints 11, 11' of the plurality of steel pipes 10, 10' and the joints 11, 11' of the plurality of steel pipes, provided on the outside of the flange. The water leak prevention device (70), which is an elastic pressure chain, is easily installed inside the pocket-type bolt (30).

When the gasket (packing: 60) is compressed by the pocket bolt (30) and the tightening guide (40), the exact center is maintained between the joints (11, 11') of the two pipes, so that the two pipes are maintained despite the high fluid pressure. The joints 11 and 11' of the pipes are composed of a pocket-type bolt 30 and a tightening guide 40, which strengthens water pressure and airtightness to prevent fluid leakage and prevents corrosion of the steel pipe.

The locking nut (50) is;

A circular metal body 51 provided on the outside of the pocket bolt 30 and the tightening guide 40 and capable of locking and dismantling the pocket bolt 30 and the tightening guide 40, and the inside of the body 51 A screw-type fastener (52) that is fastened in correspondence with the screw-type fastener (34) of the pocket-type bolt (30) provided in and a locking nut support member of the tightening guide (40) provided on one side of the screw-type fastener (52). It consists of a locking nut (50) provided with a tightening guide lamination port (53) in the form of a sawtooth or smooth surface supported by lamination at (43).

Therefore, when tightening the locking nut (50), the locking force is applied to the pocket-type bolt (30), tightening guide (40), gasket (60), and water leak prevention device (70) provided inside the locking nut main body (51). It is transmitted in the vertical direction so that the pocket bolt (30), tightening guide (40), gasket (60), and water leak prevention device (70) are easily fixed to the flanges (11, 11'), which are joints of a plurality of steel pipes (10.10'). ,

In addition, a screw-type fastener 52 that is fastened to correspond to the screw-type fastener 34 of the pocket-type bolt 30, and a locking nut support member of the tightening guide 40 provided on one side of the screw-type fastener 52.

The fixing force of the pocket-type bolt (30), tightening guide (40), gasket (60), and water leak prevention device (70) is further strengthened by the tightening guide lamination (53) supported by lamination at (43);

When loosening the locking nut (50), the pocket bolt (30), tightening guide (40), gasket (60), and water leak prevention hole (70) are connected to the flanges (11, 11'), which are joints of a plurality of steel pipes (10.10'). ), the locking nut (50) is easily dismantled and has a configuration that makes it easier to assemble and dismantle the pocket bolt (30), tightening guide (40), gasket (60), and water leak prevention device (70) using a one-touch method. It consists of

The gasket 60 is;

It consists of a circular gasket (packing: 60) made of rubber or synthetic resin provided between the joints (11, 11') of the steel pipes (10, 10');

The gasket (packing: 60) is compressed in both horizontal and vertical directions by the pocket-type bolt (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70), and the joint between the two pipes (11,

A more accurate center is maintained between the pipes (11') and external deviation is prevented, and despite the high fluid pressure, the water pressure and airtightness of the joints (11, 11') of the two pipes are strengthened, preventing fluid leakage and preventing fluid leakage. It is composed of a gasket (packing: 60) with a corrosion-resistant composition.

In addition, when the tightening guide 40 moves forward, the contact port 42 of the tightening guide moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30, thereby forming the flanges 11 and 11', which are joints of a plurality of steel pipes. ) The elastic pressure chain provided on the outside of the water leak prevention port (70) is a pocket-type bolt.

It is compressed and fixed inside (30),

When the gasket (packing: 60) is compressed by the pocket-type bolt (30), the tightening guide (40), and the leakage prevention device (70), which is an elastic pressure chain provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes, A more accurate center is maintained between the flanges (11, 11'), which are the joints of the two pipes,

The elastic pressure chain leak prevention device (70) is pressed and fixed to the inside of the pocket bolt (30), preventing the gasket (60), which is the sealing part, from coming off and having improved sealing power. It consists of a coated and coated stainless steel pipe (100).

The elastic pressure chain water leak prevention device (70) is;

A main body (71) mounted on one side of the flange (111, 11'), which is a joint of a plurality of stainless steel pipes (10, 10'), provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes ( 71) is made of stainless steel, rubber, or synthetic resin,
The flange stacked portion 72 stacked on the outside of the flanges 11 and 11', which are joints of the plurality of stainless steel pipes 10 and 10' provided at the upper and lower portions of the main body 71, and the flange stacked portion 72. It consists of a flange fixing hole 73, which is a fixing hole into which the outer surfaces (upper and lower surfaces) of the flanges 11 and 11' provided at the lower part are inserted and fixed:

A body 71 made of stainless steel, rubber, or synthetic resin is mounted on one side of a flange 11, 11', which is a joint between a plurality of stainless steel pipes 10, 10' on which a gasket 60 is installed, and the top of the body 71 , The flange laminated portion 72 provided at the lower portion is laminated on the outside of the flanges 11 and 11', which are joints of a plurality of stainless steel pipes 10 and 10', and the flange laminated portion 72 is provided at the lower portion of the flange laminated portion 72. It consists of a water leak prevention device 70 in which the outer surfaces (upper and lower surfaces) of the flanges 11 and 11' are inserted and fixed into the hole 73.

Therefore, when the tightening guide 40 moves forward, the contact port 42 of the tightening guide moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30, and the flanges 11 and 11', which are joints of a plurality of steel pipes, ), the water leak prevention device (70), an elastic pressure chain provided on the outside, is pressed and fixed to the inside of the pocket bolt (30),

When the gasket (packing: 60) is compressed by the pocket-type bolt (30), the tightening guide (40), and the leakage prevention device (70), which is an elastic pressure chain provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes, A more accurate center is maintained between the flanges (11, 11'), which are the joints of the two pipes,

The elastic pressure chain water leak prevention device (70) is compressed and fixed to the inside of the pocket bolt (30) to prevent the gasket (60), which is a sealing part, from leaving the outside, and the elastic pressure chain water leak prevention device (70) has a further improved sealing force. ) is composed of.

In addition, the water leak prevention device 70, which is an elastic pressure chain, has a flange 11, which is a joint of a steel pipe inserted into the inside of a pocket-type bolt in an 'ㄱ' or 'C' shape, and a flange 11, which is a joint of another steel pipe inserted into the tightening guide. ') is installed outside.

Therefore, the coated stainless steel pipe (100) of the present invention provided with a fitting that prevents separation of the sealing portion and improves sealing force;

As shown in Figure 5, (product configuration diagram: see Figures 2 to 4)

Inside the pocket, which is the insertion portion 32 provided inside the pocket-type bolt body 31, a flange 11, 11' is a joint of a plurality of steel pipes 10, 10' whose surfaces are provided with a resin coating layer 20, and A gasket (packing: 60), which is a sealing part, provided between the flanges (11, 11'), which are joints of a plurality of steel pipes, is inserted,

A water leak prevention device (70), which is an elastic pressure chain, is provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes into which a gasket (packing: 60) is inserted.

When the tightening guide 40 provided on one side of the pocket-type bolt 30 moves forward, the contact port 42 of the tightening guide moves forward and comes into close contact with the tightening guide contact surface 33 of the pocket-type bolt 30. The gasket (packing: 60) provided between the flanges (11, 11'), which are joints of a plurality of steel pipes (10, 10'), and the flanges (11, 11'), which are joints of a plurality of steel pipes, in a touch type, and the elastic pressure chain leakage. The prevention device 70 is pressed and fixed to the inside of the pocket bolt 30,

When the gasket (packing: 60) is compressed by the pocket-type bolt (30), the tightening guide (40), and the leakage prevention device (70), which is an elastic pressure chain provided on the outside of the flange (11, 11'), which is a joint of a plurality of steel pipes, A more accurate center is maintained between the flanges (11, 11'), which are the joints of the two pipes.

When tightening the pocket type bolt (30), the tightening guide (40), and the locking nut (50) provided on the outside of the elastic pressure chain water leak prevention device (70), the pocket type bolt provided inside the lock nut body (51) The locking force is transmitted to (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70), thereby fixing the pocket-type bolt (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70) as one unit. When loosening the locking nut (50), the pocket bolt (30), tightening guide (40), and elastic pressure chain water leak prevention device (70) are dismantled,

Provided between the pocket bolt 30 and the joints 11 and 11' of the plurality of steel pipes 10.10', the tightening guide 40 and the joints 11 and 11' of the plurality of steel pipes 10 and 10'. Gasket (Packing:

60), the elastic pressure chain water leak prevention device (70) is configured to facilitate one-touch assembly and disassembly;

In particular, the separation of the gasket (packing), which is a sealing part installed between the plurality of steel pipe flanges, which is the joint of the pipe, is prevented from coming off and the sealing force is strengthened. When the gasket is pressed, the exact center is maintained between the joints of the two pipes, and the high A technical configuration that prevents fluid leakage by strengthening the hydraulic pressure and airtightness of the joint between the two pipes despite the fluid pressure;

It is a non-destructive joint structure, and a resin coating layer (20) is coated on the surface of the steel pipe and fitting with a flared surface where the end of the pipe is processed with a flange, thereby increasing the durability of the steel pipe and fitting with the joint. further strengthened technical composition;

Technology configuration that simplifies the one-touch joint work, reduces quality variation depending on skill level, and allows for standardization;

It is easier to install the joints of multiple steel pipes, improving workability, and has a technical configuration that is easy to use; It consists of a 'coated stainless steel pipe (100) equipped with a fitting that prevents the sealing part from coming off and improves sealing power.'

If necessary, the elastic pressure chain water leak prevention device (70);

It may be composed of a main body and a flange laminate without a flange fixing hole 73, which is a fixing hole into which the upper surfaces of the flanges 11 and 11' are inserted and fixed;

A flange is a joint of multiple steel pipes of other shapes rather than the 'ㄱ' or 'ㄷ' shape.

Of course, it may also be composed of a water leak prevention device 70 provided on the outside of (11, 11').

Additionally, the steel pipes 10 and 10' of the present invention may be made of a metal steel pipe rather than a stainless steel material.

As published in the test report of Korea Testing & Research Institute of Chemical Technology in Figures 6 and 7;

KS D 3595: When tested using the hydrostatic pressure test method in Article 11.7 for stainless steel pipes for general piping and KS B 1533: The pressure test method in Article 5.4 for threaded steel pipe fittings:

The coated stainless steel pipe 100 equipped with the fitting of the present invention,

Using a pressure gauge, the presence of water leakage was checked after maintaining 4.5 MPa for 1 minute, and it was found that there was no problem.

Furthermore, the pressure was raised to 5.0 MPa using a pressure gauge and maintained for 1 minute to check for leaks, but it was found to be no problem.

In addition, the stainless steel pipe fitting of the present invention,

Using a pressure gauge, the presence of water leakage was checked after maintaining 4.5 MPa for 1 minute, and it was found that there was no problem.

Furthermore, the presence or absence of leaks was checked after maintaining the pressure at 4.5 MPa for 2 minutes, and it was found that there was no problem.

Therefore, compared to the water pressure satisfaction standard of the stainless steel pipe of the prior art: 3.5 MPa water pressure maintained for 1 minute and the fitting's internal pressure satisfaction standard: 2.5 MPa water pressure maintained for 5 seconds):

The test result of the coated stainless steel pipe with fittings was confirmed to be leaking after increasing the pressure to 5.0 MPa and holding it for 1 minute, but it was found to be no problem.

The test results of the stainless steel pipe fitting were checked for leaks after being held at a pressure of 4.5 MPa for 2 minutes, but it was found that there was no problem, and it was found that the water pressure and pressure resistance were significantly excellent.

Accordingly, it was found that the 'coated coated stainless steel pipe (100) equipped with a fitting that prevents separation of the seal part and improves the sealing force' of the present invention has significantly better watertightness than the stainless steel pipe and fitting of the prior art.

In addition, it was proven that as watertightness is excellent, airtightness is also significantly superior.

- Test Methods

1. Testing standards for stainless steel pipes (KS D 3595: Stainless steel pipes for general piping)

Section 11.7 Hydrostatic test:

When water pressure is applied to the pipe and maintained at 3.5 MPa for 1 minute, it must be tested to see whether it can withstand this pressure and whether leakage occurs.

In addition, hydraulic pressure tests exceeding 3.5 MPa can be performed by agreement between the orderer and the manufacturer.

2. Fitting test standards (KS B 1533: Threaded steel pipe fittings)

Section 5.4 Pressure resistance test:

The fitting must not be destroyed or have any other abnormalities when tested at a water pressure of 2.5 MPa. (The time is: There must be no destruction or other abnormalities when tested at a water pressure of 2.5 MPa for 5 seconds in accordance with KSD 3583: Carbon steel pipe specifications. .)

Hereinafter, the 'installation method of a coated stainless steel pipe 100 equipped with a fitting that prevents separation of the sealing part and improves sealing force' of the present invention will be described.

As shown in Figure 8; (product configuration and installation diagram: see Figures 2 to 5);

A covering equipped with a fitting that prevents the separation of the sealing part and improves the sealing force of the present invention, installed between a plurality of steel pipe flanges (11, 11'), which are joints of a plurality of stainless steel pipes (10, 10') supplied with water supply. The ‘installation method of the coated stainless steel pipe 100’ consists of the following steps S1 to S5.

Step S1:

A step in which a gasket, which is a sealing part, is inserted and installed between the flanges of a plurality of stainless steel pipes, each of which has flanges, which are joints of a plurality of stainless steel pipes:

(The flanges (11, 11') are joints where the ends of multiple stainless steel pipes are machined into "L"-shaped flanges.

A gasket 60, which is a sealing part, is inserted and installed between the slants 11 and 11' of the stainless steel pipes 10 and 10' respectively formed.

Step S2:

A body made of stainless steel, rubber, or synthetic resin is mounted on one side of the flange, which is a joint of a plurality of stainless steel pipes with gaskets installed, and flange laminates provided at the top and bottom of the body are stacked on the outside of the flange, which is a joint of a plurality of stainless steel pipes, Step in which the outer surface of the flange is inserted and fixed into the flange fixing hole provided in the lower part of the flange laminate, and the water leak prevention device, which is an elastic pressure chain, is installed on the outside of the flange of the plurality of steel pipes:

(A body 71 made of stainless steel, rubber, or synthetic resin is mounted on one side of the flange 11, 11' of the plurality of stainless steel pipes 10, 10' on which the gasket 60 is installed, and the top of the body 71, The flange stacked portion 72 provided at the lower portion is stacked on the outside of the flanges 11 and 11', which are joints of a plurality of stainless steel pipes 10 and 10', and the flange fixing hole is provided at the lower portion of the flange stacked portion 72. The outer surfaces of the flanges (11, 11') are inserted and fixed to (73), and the water leak prevention device (70), which is an elastic pressure chain, is installed on the outside of the flanges (11, 11') of the plurality of steel pipes (10, 10'). )

Step S3: Step in which pocket-type bolts, tightening guides, and locking nuts are installed on the outside of a plurality of stainless steel pipes equipped with gaskets and water-leak prevention devices. Steps in which pocket-type bolts, tightening guides, and locking nuts are installed:

(Outside of a plurality of stainless steel pipes (10, 10') equipped with a gasket (packing: 60) and a water leak prevention device (70)

to, Fittings such as pocket bolt (30), tightening guide (40), and locking nut (50) are installed respectively)

Step S4: As the tightening guide moves forward to the pocket-type bolt, the flanges of multiple stainless steel pipes installed with gaskets and water-leakage prevention devices are inserted and installed inside the pocket-type bolt in a one-touch manner, and the tight fitting hole of the tightening guide is the tightening guide of the pocket-type bolt. A step in which a water leak prevention device is pressed and installed horizontally on the outside of the flange of a plurality of stainless steel pipes in close contact with the contact surface, and a gasket is pressed and installed horizontally between the joints of the two pipes with the exact center maintained;

(As the tightening guide 40 moves forward with the pocket bolt 30, a plurality of gaskets 60 and water leak prevention holes 70 are installed in the insertion portion 32 inside the pocket bolt 30 in a one-touch manner. The flanges (11, 11'), which are joints of the stainless steel pipes (10, 10'), are inserted and installed, and the contact port (42) of the tightening guide (40) is in close contact with the tightening guide contact surface (33) of the pocket bolt (30). A water leak prevention port is installed by primary compression in a horizontal direction on the outside of the flange of a plurality of stainless steel pipes, and a gasket is installed by primary compression in a horizontal direction with the exact center maintained between the joints of the two pipes.)

Step S5: A locking nut is installed on the outside of the pocket-type bolt and tightening guide, where the joint of multiple stainless steel pipes equipped with a gasket and a water-leak prevention device is inserted, and the locking nut is tightened so that the screw-type fastener of the locking nut tightens the pocket-type bolt. A step in which the gasket and the water leak prevention hole are secondarily compressed in the vertical direction by being correspondingly fastened to the sphere, thereby completing the installation of the fitting;

(The joints (11, 11') of the plurality of stainless steel pipes (10, 10') equipped with the gasket (60) and the water leak prevention device (70) are inserted into the outer pocket type bolt (30) and the tightening guide (40) is locked. Outside the nut support 43, a locking nut 50 is mounted, and by tightening the locking nut 50, the screw-type fastener 52 of the locking nut 50 is connected to the screw-type fastener of the pocket bolt 30 ( 34), the gasket 60 and the water leak prevention port 70 are secondarily compressed in the vertical direction, and the installation of the fitting is completed.)

As described above, the ''method of installing a coated stainless steel pipe 100 equipped with a fitting with improved sealing force and prevention of separation of the sealing part'' consisting of steps S1 to S5 of the present invention;

In the S1 stage, the ends of a plurality of stainless steel pipes are flange joints machined into “L” shaped flanges.

Between the langes (11, 11') of the stainless steel pipes (10, 10') in which (11, 11') are formed respectively, a gasket as a sealing part is installed.

(60) This insertion and installation method;

In step S2, the main body 71 is mounted on one side of the flange 11, 11' of the plurality of stainless steel pipes 10, 10' on which the gasket 60 is installed, and is provided on the upper and lower sides of the main body 71. The flange stacked portion 72 is stacked on the outside of the flanges 11 and 11', which are joints of a plurality of stainless steel pipes 10 and 10', and is attached to the flange fixing hole 73 provided in the lower part of the flange stacked portion 72. An installation method in which the outer surface of the flange (11, 11') is inserted and fixed;

In step S3, a plurality of stainless steel pipes (10,

10') outside, An installation method in which the pocket bolts (30), tightening guides (40), and locking nuts (50) as fittings are respectively installed;

In step S4, the tightening guide 40 is moved forward to the pocket-type bolt 30, so that the gasket 60 and the water leak prevention port 70 are installed in the insertion portion 32 inside the pocket-type bolt 30 in a one-touch manner. The flanges (11, 11'), which are joints of the plurality of stainless steel pipes (10, 10'), are inserted and installed, and the contact port (42) of the tightening guide (40) is connected to the tightening guide contact surface (33) of the pocket-type bolt (30). By being closely adhered to, the water leak prevention device 70 is installed by primary compression in the horizontal direction on the outside of the flanges 11 and 11' of the plurality of stainless steel pipes 10 and 10', and the gasket is positioned at the exact center between the joints of the two pipes. An installation method in which the first compression is installed in the horizontal direction while this is maintained;

In step S5, the joints (11, 11') of the plurality of stainless steel pipes (10, 10') equipped with the gasket (60) and the water leak prevention device (70) are inserted into the outer and tightening guide (40) of the pocket-type bolt (30). ), the locking nut 50 is mounted on the outside of the locking nut support 43, and by tightening the locking nut 50, the threaded fastener 52 of the locking nut 50 is connected to the screw type of the pocket bolt 30. It consists of an installation method in which the gasket 60 and the water leak prevention device 70 are secondarily compressed in the vertical direction by correspondingly fastening to the fastener 34, and the installation of the fitting is completed;

In particular, the water leak prevention port 70 is installed by first and second compression on the outside of the flange of a plurality of stainless steel pipes in the horizontal and vertical directions, and the gasket is installed in the first and second directions in the horizontal and vertical directions between the flanges, which are the joints of the two pipes. An installation method that prevents fluid leakage by compressing and installing the gasket while maintaining the exact center of the gasket, so that the hydraulic pressure and airtightness of the joint between the two pipes are strengthened despite high fluid pressure;

An installation method that improves the elasticity of stainless steel pipe joints, simplifies the joint work with a one-touch method, reduces quality variation depending on skill level, and allows for standardization;

It is easier to install joints of multiple stainless steel pipes, improving workability, and consists of an easy-to-use installation method called 'Installation method of coated stainless steel pipe (100) with joints that prevent separation of the sealing part and improves sealing force'. do.

Additionally, as needed;

On the surfaces of the plurality of stainless steel pipes (10, 10') and flanges (11, 11'), respectively formed with flanges (11, 11'), which are joints of the plurality of stainless steel pipes in the S1 stage, and the joints in the S3 stage, high-density polyethylene 85 to It consists of an installation method in which a resin coating layer (20) composed of a composite polyethylene resin of 95% by weight and 5 to 15% by weight of linear low-density polyethylene is coated or applied.

The resin coating layer 20 prevents surface damage to the pipe due to processing of the flanges 11 and 11', which are joints on both sides of the fitting and the steel pipe 10 and 10', and prevents rust from occurring due to corrosion of the joint, and ensures durability. The wear resistance and corrosion resistance are further strengthened and it is hygienic.

An installation method in which bonding strength is strengthened when coating or applying a resin coating layer 20 to the surface of a stainless steel pipe (10,10') and a fitting is a 'coated stainless steel pipe (100') with a fitting that prevents separation of the sealing part and improves sealing power. ) can also be configured as ‘installation method’.

Above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention.

100: Coated stainless steel pipe with fittings that prevent separation of the sealing part and improve sealing power according to the present invention
10,10': Stainless steel pipe (pipe)
11,11': Flange (joint)
20: Resin coating layer
30: Pocket bolt (socket part)
31: Main body (pocket-type body) 32: Insertion part
33: Tightening guide contact surface 34: Screw fastener
40: Tightening guide
41: main body 42: close contact port
43: Locking nut support area
50: Locking nut
51: Main body 52: Screw fastener
53: Tightening guide laminated sphere
60: Gasket (packing)
70: Leakage prevention device (elastic pressurizing body)
71: Main body 72: Flange lamination section
73: Flange fixing hole
1: Prior art loose flanged pipe joint
2,2': loose flange pie 3,3: pipe
5: Installation hole 7: Flange part
8: Reinforcement ring 10: Elastic gasket
14: bolt 16: nut

Claims (8)

Flange is a joint of multiple stainless steel pipes (10, 10') through which water supply is supplied.
Installed between (11,11'),
Inside the pocket, which is the insertion portion 32 provided inside the pocket-type bolt body 31, a plurality of stainless steel surfaces are provided with a resin coating layer 20 coated or coated with a composite polyethylene resin. Steel pipes (10, 10') and flange (11, 11') joints, and multiple stainless steel pipes A gasket 60, which is a sealing part provided between the flanges 11 and 11', which are joints of the steel pipe, is inserted: a plurality of stainless steel gaskets 60 are inserted. A water leak prevention port (70), which is an elastic pressure chain, is provided on the outside of the flanges (11, 11'), which are joints of steel pipes: a tight fitting port (42) of the tightening guide (40) provided on one side of the pocket-type bolt (30) When moved forward and in close contact with the tightening guide contact surface 33 of the pocket bolt 30, the horizontal force is applied to the flanges 11 and 11', which are joints of the plurality of stainless steel pipes 10 and 10', and the plurality of stainless steel pipes. It is transmitted to the gasket 60 provided between the flanges 11 and 11', which is a joint, and the water leak prevention port 70, which is an elastic pressure chain, so that the gasket 60 and the water leak prevention port 70 are inside the pocket bolt 30. Crimped and secured to:
When tightening the pocket type bolt (30), the tightening guide (40), and the locking nut (50) provided on the outside of the elastic pressure chain water leak prevention device (70), the pocket type bolt provided inside the lock nut body (51) The locking force is transmitted in the vertical direction to (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70), so that the pocket type bolt (30), the tightening guide (40), and the elastic pressure chain water leak prevention device (70) Cover coating equipped with joints that are integrally fixed, preventing separation of the sealing part and improving sealing power. In the stainless steel pipe 100;

The elastic pressure chain water leak prevention device (70);
The main body 71 is mounted on one side of the flange 111, 11', which is a joint of a plurality of stainless steel pipes. The main body 71 is made of stainless steel, rubber, or synthetic resin,
A flange laminated portion 72 stacked on the outside of the flanges 11 and 11', which are joints of a plurality of steel pipes provided at the upper and lower portions of the main body 71, and a flange 11 provided on the lower part of the flange laminated portion 72. ,
A coated stainless steel pipe (100) equipped with a fitting that prevents separation of the sealing portion and improves sealing force, characterized in that the outer surface of the flange (11') is composed of a flange fixing hole (73), which is a fixing hole into which the outer surface is inserted and fixed. delete delete delete delete delete Flange (11,
A method of installing a coated stainless steel pipe 100 installed between 11') and provided with a fitting that prevents separation of the sealing portion and improves sealing force;

Step S1:
A step in which a gasket, which is a sealing part, is inserted and installed between the flanges of a plurality of stainless steel pipes, each of which has flanges, which are joints of a plurality of stainless steel pipes:
Step S2:
A body made of stainless steel, rubber, or synthetic resin is mounted on one side of the flange, which is a joint of a plurality of stainless steel pipes with gaskets installed, and flange laminates provided at the top and bottom of the body are stacked on the outside of the flange, which is a joint of a plurality of stainless steel pipes, A step in which the outer surface of the flange is inserted and fixed into the flange fixing hole provided in the lower part of the flange laminate, and the water leak prevention device, which is an elastic pressure chain, is installed on the outside of the flange of the plurality of steel pipes:
Step S3:
Steps in which pocket-type bolts, tightening guides, and locking nuts are installed on the outside of a plurality of stainless steel pipes equipped with gaskets and water leak prevention devices:
Step S4:
As the tightening guide moves forward with the pocket-type bolt, the flanges of multiple stainless steel pipes equipped with gaskets and leakage prevention devices are installed in a one-touch manner, and the tight fitting hole of the tightening guide is attached to the tightening guide contact surface of the pocket-type bolt. In close contact, a water leak prevention port is pressed and installed horizontally on the outside of the flange of a plurality of stainless steel pipes, and a gasket is pressed and installed horizontally between the joints of the two pipes with the exact center maintained;
Step S5:
A locking nut is installed on the outside of the pocket-type bolt and tightening guide, which are inserted into the joint of multiple stainless steel pipes equipped with a gasket and a water-leak prevention device, and the locking nut is tightened. The screw-type fastener of the locking nut corresponds to the screw-type fastener of the pocket-type bolt. Fastening, the gasket and the water leak prevention device are secondarily compressed in the vertical direction, and the installation of the fitting is completed;
A method of installing a coated stainless steel pipe (100) with a fitting that prevents separation of the sealing portion and improves sealing force, characterized in that it is installed. According to clause 7,
On the surfaces of the plurality of stainless steel pipes (10, 10') and flanges (11, 11'), respectively formed with flanges (11, 11'), which are joints of the plurality of stainless steel pipes in the S1 stage, and the joints in the S3 stage, high-density polyethylene 85 to A coated stainless steel pipe (100) equipped with a fitting that prevents separation of the sealing portion and improves sealing force, characterized in that a resin coating layer (20) composed of a composite polyethylene resin of 95% by weight and 5 to 15% by weight of linear low-density polyethylene is coated or applied. ) installation method.