KR102542099B1 - Swivel joint - Google Patents

Abstract

The present invention relates to a swivel joint for steel manufacturing process, and in particular, when fluid is discharged using a rotor rotatably installed in a flow path of a casing, generation of differential pressure can be reduced by a plurality of inclined slot grooves, as well as pressure fluctuation can be reduced. It relates to a swivel joint for the steel manufacturing process.
The swivel joint for the steelmaking process of the present invention is composed of a flange 1100 installed at both ends of a flow path and a shaft member, formed at one end and fixed to one end of the flange 1100 or elbow pipe 1500 by welding A head portion 1210, a flow path forming groove 1250 formed with a constant length around the axis of the head portion 1210, and formed through the flow path forming groove on the outer circumferential surface of the head portion 1210 with a reduced diameter, and conforming to the outer circumferential surface. A rotor 1200 having a slot groove 1260 having a long hole formed in a state of being inclined at a certain angle with respect to the axial direction, while a plurality of rotors 1200 are formed at a constant distance from each other, and the rotor 1200 is fitted. In addition, the casing 1300 in which the passage 1311 is formed in a right angle direction, and the casing 1300 and the casing connection pipe 1400 welded to connect the passage horizontally to the passage 1311 of the casing 1300, An elbow connector 1600 for connecting an elbow pipe 1500 welded to the head 1210 of the rotor 1200 to change the flow path to 90 degrees and the elbow pipe 1500 located at both ends. ).

Description

Swivel joint for steel manufacturing process {Swivel joint}

The present invention relates to a swivel joint in which a part of a joint connecting pipes can freely rotate around a central axis. It relates to a swivel joint for a steel manufacturing process arranged to discharge fluid.

In general, a swivel joint (SUPPORT SKID) has been used to transport fluids by connecting one pipe to another pipe and rotating it, one end fixed using several swivel joints and the other end connected to a moving object.

That is, the swivel joint has been used to transfer fluids by connecting it to a place such as a moving ship anchored at a dockside, and is installed between a wrist part capable of forward and reverse rotation installed in the main body of an industrial robot and work equipment, and It is used where there is a fluid delivery path connecting the side of the working device.

In addition, recently, various developments for improving the discharge pressure and efficiency of the swivel joint are required.

Reference: Republic of Korea Patent Registration No. 10-0853876 Title of the invention "Swivel Joint".

The present invention has been made to solve the above-mentioned requirements, and when fluid is discharged using a rotor rotatably installed in a flow path of a casing, the generation of differential pressure can be reduced by a plurality of inclined slot grooves, as well as pressure Its purpose is to provide a swivel joint for the steelmaking process that can also reduce the fluctuation of

In the present invention, wear prevention rings having the same width as the first shaft diameter and having a predetermined width are inserted and welded at both ends of the second shaft diameter, which is machined to a certain length by reducing the diameter of the rotor from the head, thereby preventing extreme wear of the rotor. Its purpose is to provide a swivel joint for the steel manufacturing process.

The present invention is easy to assemble by a positioning pin installed to protrude a certain length from the outer circumferential surface of the head, and can reduce the generation of differential pressure when discharging fluid by means of a plurality of slot grooves inclined at 25 degrees, while also reducing pressure fluctuations. Its purpose is to provide a swivel joint for the steel manufacturing process that can be reduced.

The swivel joint for the steel manufacturing process according to the present invention for achieving the above object is made of a flange installed at both ends of the flow path and a shaft member, formed at one end and fixed with one end of the flange or elbow pipe by welding A head portion, a flow path forming groove formed with a constant length around the axis provided with the head portion, and a plurality of flow path forming grooves formed through the head portion and positioned at equal angles to the outer peripheral surface to maintain a constant distance from the outer circumferential surface reduced in diameter from the head portion. On the other hand, a rotor having a slot groove of a long hole formed inclined at a predetermined angle in one direction with respect to the axial direction, a casing in which a flow path is formed in a right angle direction while the rotor is inserted, and a flow path of the casing and the casing A casing connector welded to connect the flow path horizontally, an elbow pipe welded to the head of the rotor to change the flow path to 90 degrees, and an elbow connector for connecting the elbow tube located at both ends. includes

Here, the rotor comprises a first shaft diameter portion reduced in diameter from the head and processed to a constant length, a second shaft diameter portion reduced in diameter at the first shaft diameter portion and processed to a constant length, and a constant diameter reduced at the second shaft diameter portion. In addition to being machined to a length, it includes a fastening part having a threaded part and a keyway with a constant length, and a wear prevention ring that is fitted and welded to both ends of the second shaft diameter and has the same outer diameter as the first shaft diameter and has a predetermined width. do.

A positioning pin is installed on the outer circumferential surface of the head so as to protrude a predetermined length.

In addition, the slot groove is formed in three to five on the outer circumferential surface.

On the other hand, it is preferable that the slot groove is inclined at 25 degrees with respect to the axial direction.

As described above, according to the swivel joint for the steel manufacturing process according to the present invention, when fluid is discharged using a rotor rotatably installed in the passage of the casing, the generation of differential pressure can be reduced by the plurality of inclined slot grooves, as well as the pressure It also has the effect of reducing fluctuations.

According to the swivel joint for the steelmaking process according to the present invention, wear-resistant rings having the same width as the first shaft diameter and having a predetermined width are fitted and welded at both ends of the second shaft diameter, which is processed to a certain length after the rotor is reduced in diameter from the head. It has the effect of preventing extreme wear of the rotor.

According to the swivel joint for the steel manufacturing process according to the present invention, the assembly is easy by the positioning pin installed to protrude a certain length from the outer circumferential surface of the head, and the generation of differential pressure when fluid is discharged is prevented by the plurality of slot grooves formed at an angle of 25 degrees. On the other hand, it has the effect of reducing the fluctuation of pressure.

1 is a partial cross-sectional view illustrating a swivel joint for a steel manufacturing process according to an embodiment of the present invention;
Figure 2 is a right side view of Figure 1, a partly sectional explanatory view;
3 is a detailed cross-sectional view showing a state in which the rotor is assembled to the casing of FIG. 1;
4 is a perspective view showing the rotor of FIG. 1;
Figure 5 is a plan view of Figure 4;
Figure 6 is a left side view of Figure 1;
7 is a right side view of FIG. 1;
FIG. 8 is a cross-sectional view along line A-A of FIG. 5 .

Hereinafter, a swivel joint for a steel manufacturing process according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In adding quotation marks to the components of the drawings, even if they are displayed on different drawings, only the same components have the same symbols as possible, and known functions that are determined to unnecessarily obscure the subject matter of the present invention. And a detailed description of the configuration is omitted. Also, directional terms such as 'top', 'bottom', 'front', 'back', 'lead', 'front', 'rear', etc. are used in relation to the orientation of the disclosed figure(s). Because components of embodiments of the present invention may be positioned in a variety of orientations, directional terms are used for purposes of illustration and not limitation.

As shown in FIGS. 1 to 8, the swivel joint 1000 for the steelmaking process of the present invention includes a flange 1100, a rotor 1200, a casing 1300, and a casing connector connecting the casing and the casing ( 1400), an elbow pipe 1500 connecting the rotor and the elbow connector, and an elbow connector 1600 connecting the elbow pipe and the elbow pipe.

Here, the flange 1100 is installed at both ends of the swivel joint 1000 and is welded to one end of the rotor 1200, and a through hole 1110 communicating with the shaft center of the rotor 1200 at the shaft center Formed, at the other end that is not welded to the rotor, flange fixing holes 1120 for fixing are formed at regular intervals at an equal angle, and a sealing portion 1130 on which an O-ring is seated is provided at the end where the flange fixing hole is formed. has been

Therefore, the fluid is supplied to the rotor 1200 through the through hole 1110 or discharged from the rotor 1200 to the flange 1100, and the swivel joint is formed by the flange fixing hole 1120 and the sealing part 1130. (1000) can be fixed to an unillustrated fluid supply device.

Further, the rotor 1200 is composed of a shaft member, and a head portion 1210 formed at one end and fixed to one end of the flange 1100 or the elbow pipe 1500 by welding, and a constant diameter reduced from the head portion. A first shaft diameter portion 1220 processed to a length, a second shaft diameter portion 1230 processed to a constant length by being reduced in diameter in the first shaft diameter portion, and a constant length reduced in this second shaft diameter portion and processed to a constant length A fastening part 1240 having a screw part 1241 and a key groove 1242 in length, a passage forming groove 1250 formed with a constant length around an axis having the head part 1210, and the second shaft In addition to being penetrated from the outer circumferential surface of the neck portion 1230 to the flow path forming groove, it is located at an equal angle to the outer circumferential surface of the second shaft neck portion 1230 and is formed in a state of maintaining a constant interval, while maintaining a constant angular diameter in one direction with respect to the axial direction. The slot groove 1260 of the long hole formed in the photographic state and both ends of the second shaft diameter portion 1230 are fitted and welded to positions accommodating both ends of the slot groove 1260, and the outer diameter is the same as that of the first shaft diameter portion. It consists of an anti-wear ring 1270 having a predetermined width.

The anti-wear ring 1270 can be formed integrally with the second shaft diameter portion 1230 and subjected to heat treatment, and reference numeral 1211 denotes a pipe welded portion having a chamfer formed on the head, and 1280 denotes the casing 1300. It is a positioning pin that determines the length to be inserted when the rotor 1200 is inserted into.

In addition, the slot groove 1260 is inclined at 25° in this embodiment.

Therefore, the fluid introduced into the flow path forming groove 1250 is discharged through the slot groove 1260 and flows into the casing 1300, or the fluid introduced from the casing 1300 passes through the slot groove 1260. 1250, and when the anti-wear ring 1270 is installed, the anti-wear ring 1270 is made of high hardness so that it is not easily worn even after long use, so that problems do not occur in the machine. , 3 to 5 slot grooves 1260 are formed in the second shaft diameter portion 1230 of the rotor 1200 so that fluid can be discharged smoothly. In particular, the slot groove 1260 is in the axial direction. When formed with a predetermined angle inclination with respect to the rotor 1200, it is possible to reduce the generation of differential pressure when fluid is discharged, as well as to reduce pressure fluctuations.

In addition, the casing 1300 includes a casing housing 1310 in which the rotor 1200 is fitted and a passage 1311 formed in a right angle direction, and bearings 1320 and 1330 seated at both ends of the passage on one side of the casing housing. ), a pair of packings 1340 positioned at regular intervals inside the bearing and installed to prevent leakage of fluid, a threaded cover 1350 assembled to one end of the casing housing, and the casing The rotor bearing cover 1360 assembled to the other end of the housing and to which the head 1210 of the rotor 1200 is seated, the bearings 1320 and 1330 assembled to the casing housing and into which the rotor 1200 is fitted, and the screw part ( It includes a nipple 1370 to supply lubricant toward 1410.

Therefore, while the rotor 1200 rotates while being press-fitted into the bearings 1320 and 1330, it is discharged into the flow path 1311 of the casing 1300 through the flow path forming groove 1250 and the slot groove 1260. Fluid flows into the slot groove 1260 and the passage forming groove 1250 through the passage 1311 of the casing 1300 .

On the other hand, the casing connector 1400 is welded to connect the casing 1300 and the passage 1311 of the casing 1300 horizontally, has a constant outer diameter, and extends to the passage 1311 in the axial direction. Channels formed with the same diameter are formed, while the ends are chamfered for welding with the casing.

Accordingly, both ends of the casing connection pipe 1400 are welded to each casing 1300 to form a passage having a predetermined length.

In addition, the elbow pipe 1500 is welded to the head 1210 of the rotor 1200 to change the flow path in the direction of 90 degrees, and the internal flow path forms a curved flow path in the direction of 90 degrees. are forming

Therefore, when the elbow pipe 1500 is fixed to the head 1210 of the rotor 1200, the flow direction between the rotor 1200 and the elbow pipe 1500 is changed in the direction of 90 degrees.

In addition, the elbow connector 1600 is a tube for connecting the elbow tube 1500 located at both ends, and has a flow path having the same diameter as the flow path diameter of the elbow tube and has an outer diameter, while the casing connector tube It may be configured to be the same as the diameter of (1400).

Therefore, the elbow connector 1600 connects the elbow tubes 1500 located at both ends at regular intervals from each other, so that the flow path can be connected.

As described above, by the flange 1100, the rotor 1200, the casing 1300, the casing connection pipe 1400, the elbow pipe 1500, and the elbow connection pipe 1600, a certain distance away from the fluid supply device It becomes possible to freely supply fluid to the device.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and change the technical spirit of the present invention in various forms. Therefore, such improvements and changes will fall within the protection scope of the present invention if they are obvious to those skilled in the art.

1000: swivel joint 1100: flange
1200: rotor 1210: head
1220: first shaft diameter 1230: second shaft diameter
1240: fastening part 1250: flow path forming groove
1260: slot groove 1270: anti-wear ring
1300: casing 1400: casing connector
1500: elbow pipe 1600: elbow connector

Claims (5)

A flange 1100 installed at both ends of the flow path, a rotor 1200 made of a shaft member, a casing 1300 in which the rotor 1200 is fitted and a flow path 1311 formed in a right angle direction, and the casing 1300 ) and the casing connection pipe 1400 welded to connect the flow path horizontally to the flow path 1311 of the casing 1300 and the head portion 1210 of the rotor 1200. In the swivel joint for the steelmaking process, which includes an elbow pipe 1500 welded to change and an elbow connector 1600 for connecting the elbow pipe 1500 located at both ends,
The head 1210 of the rotor 1200 is formed on one end and configured to be fixed to one end of the flange 1100 or the elbow pipe 1500 by welding,
The rotor 1200 includes a head 1210 formed at one end and fixed to one end of the flange 1100 or the elbow pipe 1500 by welding, and a first shaft that is reduced in diameter from the head and processed to a certain length. A neck portion 1220, a second shaft neck portion 1230 reduced in diameter in the first shaft neck portion and processed to a constant length, and a threaded portion 1241 in which the diameter is reduced in the second shaft diameter portion and processed to a constant length and a constant length. The fastening part 1240 with the key groove 1242, the flow path forming groove 1250 formed with a constant length around the shaft with the head 1210, and the outer circumferential surface of the second shaft diameter part 1230 In addition to being formed through the flow path forming groove, it is located at an equal angle to the outer circumferential surface of the second shaft diameter portion 1230 and is formed in a state of maintaining a constant interval, while forming a long hole inclined at an angle of 25 degrees in one direction with respect to the axial direction. In addition to being formed, three to five slot grooves 1260 formed on the outer circumferential surface and both ends of the second shaft diameter portion 1230 are fitted and welded at positions accommodating both ends of the slot groove 1260, and the outer diameter is the first A swivel joint for steelmaking, characterized in that it is equipped with a wear prevention ring 1270 having the same width as the reduced diameter and having a predetermined width, and a positioning pin 1280 installed to protrude a certain length from the outer circumferential surface of the head 1210. delete delete delete delete

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