KR0162628B1 - Pig t switch - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pig used in an oil transfer facility, and more particularly, to a pigtail T switch for adjusting a moving path of a pig used to transfer different kinds of oils in the same system using the same pipe. . Conventionally, there was no separate device that can control the path of the pigtail in the branching T-shaped pipe. Pig T switch according to the present invention is provided with a pig guide that can selectively block the necessary portion of the movement path of the pig and a driving means for driving the pig guide by the required angle to adjust the movement path of the pig Can be. Pig T switch according to the present invention is used in the oil transfer equipment.

Description

Pig T Switch

1 is a view for explaining the configuration and operation of the pigtail T switch according to the present invention.

2 is a view showing a view along the line I-I of FIG.

3 is a view showing in detail drive means for driving a pig guide.

4 is a view for explaining the structure and operation of the stopper ring and the stop lever.

5 is a view showing in detail another embodiment of a drive means for driving a pig guide.

* Explanation of symbols for the main parts of the drawings

100: pigtail T switch 110: straight tube

112: first route 120: branch pipe

122: second path 130: body

132: slot 140: support member

141: drain 151: worm gear

152: handle 153: spur gear

154: rotation axis 155: drive lever

160: Pigtail guide 170: Stopper ring

172: Braking groove 180: Stop lever

182: step

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pig used in an oil transfer facility, and more particularly, to a pigtail T switch for adjusting a moving path of a pig used to transfer different kinds of oils in the same system using the same pipe. .

With the rapid development of the petrochemical industry, plumbing facilities for the transfer of various liquid products in the pipeline are rapidly increasing. The construction of such plumbing equipment comes with a huge investment. Accordingly, the need for technology development to minimize the investment costs associated with plumbing equipment is increasing day by day.

In the related art, a piping facility was constructed separately for each oil type, or one pipe was used, but one fluid was sent, and then another fluid was continuously sent as it is. In the former case, a huge construction cost is required, and in the latter case, different oil species are mixed.

As a technique for solving such a problem, a technique for minimizing the pipe construction cost by a method of transporting several types of oils in the same system by separating the pigs using a single pipe has been developed and utilized in recent years. However, one of the problems that have not yet been solved in the way of using pigs is that the pipe cannot be separated and transferred to both sides when the pipe is branched into a T-shape. In this case, in order to be able to separate and transfer different types of oil to both sides, the piglets also need to be able to be moved to the required pipes in both branch pipes, and there was no separate device for selecting the moving path of the pigs.

An object of the present invention is to provide a pigtail T switch that can selectively adjust the movement path of the pig when the pipe is branched to the T-type.

The object of the present invention is a transfer pipe for selectively transferring different types of oil, the oil is transferred to the inside of the transfer pipe is installed so as to pass through the transfer pipe is mixed with the oil to be transferred now. Pigment T switch is installed in the oil transfer equipment having a pig to prevent the pigtail to select the movement path of the pig, the transfer pipe is connected to the feed pipe in the same line and has been moved through the feed pipe A body having a straight pipe having a first path through which the pig passes and a branch pipe having a second path through which the pig which has been moved through the transfer pipe and installed in the direction inclined at a predetermined angle to the straight pipe; It is disposed inside the body through one side of the body and is installed to be rotated a predetermined angle outside the body. Pigment for determining the movement path of the pig by selectively blocking the first path or the second path according to the angle of rotation, and a pigeon driving means for rotating the pig guide at a necessary angle Achievable by a T switch.

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

1 is a view for explaining the configuration and operation of the pigtail T switch according to the present invention, Figure 2 is a view showing a state along the line I-I in FIG. As shown, the pigtail T switch 100 according to the present invention includes a body 130 composed of a straight pipe 110 and a branch pipe 120 connected in a direction substantially perpendicular to the straight pipe 110.

The straight pipe 110 is provided with a first path 112 through which a pig can pass to a portion connected to a transport pipe for selectively transporting different kinds of oils. Of course, the selected oil passes through the first path 112. Branch pipe 120 is in the form of an elbow (elbow) and has a second path 122 through which the pig can pass. The second path 122 passes through a different oil than the first path 112. Of course, the pigtail T-switch as shown in Figs. 1 and 2 is provided at the branch point of the transfer pipe, and a gate valve or a general two-way ball valve is always installed in this vicinity. Shutdown of the line is made by these valves.

A support member 140 attached to the outer circumferential surface of the body 130 is installed in the V-shaped space between the outer circumferential surface having a large curvature of the branch pipe 120 and the outer circumferential surface of the adjacent straight tube. The support member 140 is intended to be able to install necessary parts such as various other necessary gears, and is preferably in the form of a box. This is to surround the parts inside to prevent the accumulation of foreign substances such as dust, and to look good.

The support member 14 has a warm gear in a direction substantially perpendicular to the straight pipe 110.

151 is provided. The worm gear 151 is connected to the handle 152 and is rotatably installed in the required direction by the operation of the handle 152. The worm gear 151 has a super gear 153 therein. The spur gear 153 is provided on the support member 140 so as to rotate left and right to a predetermined angle in a clockwise direction and a counterclockwise direction. That is, the spur gear 153 is rotated clockwise or counterclockwise according to the rotation direction of the worm gear 151 rotated by the handle 152.

The rotation shaft 154 is coupled to the central portion of the spur gear 153. The rotary shaft 154 is coupled to the spur gear 153 so as to rotate in the direction in which the spur gear 153 rotates. Pigment guide 160 is coupled to the rotation shaft 154. The pig guide 160 penetrates one side of the body 130 and is disposed inside the body 130. The pig guide 160 is connected to the rotating shaft 154 coupled to the spur gear 153 outside the body 130 and is installed to be rotated at a predetermined angle. Of course, in order for the pig guide 160 to be rotated by a required angle, a slot should be formed at one side of the straight pipe 110 and the branch pipe 120. The pig guide 160 selectively blocks the first path 112 or the second path 122 according to the rotation angle. That is, the pig guide 160 determines the movement path of the pig. As shown in FIG. 2, the pig guide 160 may use a combination of about three blades.

In FIG. 1, when the pig guide 160 is positioned as indicated by the dotted line, the piglet moves along the first path 112 of the straight pipe 110. On the contrary, when the pig guide 160 is in the position as indicated by the solid line, the pig will move along the second path 122 of the branch pipe 120. The front surface of the pig guide 160 to play such a role has a curved shape having a curvature of a size similar to the outer curvature of the branch pipe (120). This is to allow the pig to smoothly turn. The rear face of this pig guide 160 forms a straight line shape. This is because when the pig guide 160 is in the position as indicated by the dotted line, the pig guide 160 is inserted into the slot formed in the body 130 to block the slot so that the pig that is moved can be smoothly passed without being caught. To make it possible. The end of the pig guide 160, that is, the portion that is in contact with the inner surface of the body 130 to reduce the impact on the body 130 to form a circular shape as shown. This part is better to use a soft material.

Pig T switch 100 according to the present invention is provided with a stopper ring 170 coupled to the rotating shaft 154 and the stop lever 180 to operate with the stopper ring 170 to limit the rotation angle of the rotating shaft 154. The stopper ring 170 and the stop lever 180 inadvertently put the pig guide 160 in an intermediate position so that the pig guide is in progress. The pipe guide 160 serves to fix the pig guide 160 at a constant rotational angle so as to prevent the tube from being blocked by the 160 or the pig guide 160 is damaged.

In FIG. 1, when the pig is to be passed through the first path 112 of the straight pipe 110, the handle 152 may be manipulated so that the pig guide 160 is positioned as indicated by the dotted line. On the contrary, in the case where the pig is to be passed through the second path 122 of the branch pipe 120, the handle 152 may be manipulated so that the pig guide 160 is positioned as shown by the solid line.

On the other hand, the driving means for driving the pig guide 160 may be selected according to the size of the lever type, gear type, electric type, pneumatic type suitable to use.

3 is a view showing in detail the driving means for driving the pig guide. In FIG. 3, three slots 132 are formed side by side in the body 130 to allow the pig guide 160 to rotate to a predetermined angle. The support member 140 is welded to the body 130. The support member 140 is provided with a drain 141 for discharging oil leaked through the slot 132, and upper and lower bosses 142 and 143 for supporting the rotating shaft 154. It is. The lower boss 143 is provided with a bearing 144 for smooth rotation of the rotation shaft 154, and the gasket 146 and the bottom cover 147 are coupled to each other through the bolt 145. An O-ring 148 and a packing 159 are disposed in the upper boss 142 to smoothly rotate the rotating shaft 154.

The worm gear 151 is rotatably installed at one side of the support member 140. The handle 152 is coupled to the worm gear 151. The spur gear 153 is bitten by this worm gear 151. The spur gear 153 can be left and right rotated to a predetermined angle clockwise or counterclockwise according to the rotation direction of the worm gear 151. The rotation shaft 154 is coupled to the spur gear 153, and the pig guide 160 is coupled to the rotation shaft 154. The stopper ring 170 is coupled to the rotation shaft 154 between the spur gear 153 and the pig guide 160. On one side, a stop lever 180 is installed through the pin 190. This stuffer ring 170 and stop lever 180 are described again later with reference to FIG. The indigate 191 is connected to the rotation shaft 154. This indicator 191 is for indicating the position of the pig guide 160.

On one side of the support member 140, a support pin 190 is installed in the pin support box 192, and the support pin 190 has a stop lever 180 together with a spring 193, a lock nut 194, and the like. Is installed. The operation of this stop lever 180 is described with reference to FIG.

4 is a view for explaining the structure and operation of the stopper ring and the stop lever. In Figure 4, the support member 140 is provided with a worm gear 151. The spur gear 153 is bitten by this worm gear 151. The rotation shaft 154 is coupled to the spur gear 153, and the stopper ring 170 is coupled to the rotation shaft 154. As shown in the figure, the stopper ring 170 has a brake groove 172 formed at a predetermined interval on one outer circumferential surface thereof. The angle between the braking grooves 172 may be determined in consideration of the rotation angle of the pig guide described above. A stop lever 180 is provided at one side near the stopper ring 170. The stop lever 180 has a step 182 that can be inserted into the brake groove 172 at a predetermined rotational angle of the stopper ring 170, and elastically to a predetermined angle by the spring described in FIG. It is rotatably supported. One side of the stop lever 180 protrudes to the outside of the support member 140, so that the step 182 may be released from the brake groove 172 as needed.

5 is a view showing another embodiment of a driving means for driving a pig guide. In FIG. 5 driving means, the worm gear 151 and the spur gear 153 are removed from the driving means of FIG. 3 and the driving lever 155 is directly installed on the rotation shaft 154. In this case, the rotation shaft 154 is rotated by the drive lever 155, and the rotation shaft 154 rotates the pig guide 160 to the required angle. Such a drive lever 155 is mainly used for small sized plumbing equipment. The rest of the rest is almost the same as described in FIG.

As described above with reference to FIGS. 1 to 5, the pig T-switch according to the present invention may selectively adjust the path of the pig in a branch branched into a T-shape. In addition, unlike the valve structure, the pigtail T switch according to the present invention does not have a sealing structure and is capable of changing only the direction in which the pigs move freely. Particularly, the inside of the pigtail T switch has one straight passage and one curved passage. Because it is made, it is possible to make the T part of the existing pipe, and it has the advantage that it can be easily made even at a low manufacturing cost.

Claims (6)

A transfer tube for selectively transferring different kinds of oils, and having a pig, which is movably installed in the transfer tube and prevents the previously transferred oil from being mixed with the oil to be conveyed while passing through the transfer tube. In the pigtail T-switch installed in the oil transfer facility for selecting the movement path of the pig, the first pipe which is connected to the transfer pipe in the same line as the transfer pipe and moved through the transfer pipe can pass A body having a straight pipe having a path and a branch pipe installed in the straight pipe at a predetermined angle and having a second path through which the pigs moved through the feed pipe can pass; Pigment which penetrates one side of the body and is disposed inside the body and is installed to be rotated by a predetermined angle outside the body to selectively block the first path or the second path according to the rotation angle, thereby determining the movement path of the pig. guide ; And rotary drive means for rotating the pig guide at a required angle. The pigtail T switch according to claim 1, wherein the branch pipe of the body has an elbow pipe shape. The method of claim 2, wherein the front surface of the pig guide has a curved shape of a predetermined curvature so as to smoothly guide the pig to move to the second path, the rear surface of the pig guide is a straight shape Pigment T-switch, characterized in that the end of the pig guide which is in contact with the inner surface of the body has a smooth curved shape to reduce the impact at the time of contact. According to claim 1, The rotary drive means is a support member provided on the side of the straight pipe behind the branch pipe, a worm gear rotatably installed in the direction required for the support member, the clock to a predetermined angle in accordance with the rotation direction of the worm gear A spur gear that rotates in a direction or counterclockwise direction and a rotation shaft installed at the center of the spur gear in a rotational center axis direction to couple the pig guide and transmit the rotational force of the spur gear to the pig guide. Pig T switch. According to claim 1, wherein the rotary drive means is installed on the side of the straight pipe behind the branch pipe, the support member is installed to be rotatable in place and the rotation axis is coupled to the pig guide is substantially perpendicular to the rotation axis Pigment T switch characterized in that it has a drive lever connected in the direction to rotate the rotary shaft in the required direction. The stopper ring of claim 4 or 5, further comprising: a stopper ring having a brake groove coupled to the rotation shaft and rotating in the same direction according to the rotation of the rotation shaft, the brake groove having a predetermined angular interval formed on an outer circumferential surface thereof, and the brake groove at a predetermined rotation angle of the stopper ring. Pigtail T-switch, characterized in that it further comprises a stop lever which is provided to be stepped into each of the stopper ring elastically rotatable and can release the latch of the step caught in the brake groove if necessary .