A Raschig ring filling device for acetylene pipeline joint and its use method

Abstract

The embodiment of the present invention provides a device for filling Raschig rings at the joint of an acetylene pipeline and a method for using the device, which relates to the field of pipeline filling equipment. It includes: a first protective shell, a first cover shell, a second cover shell and a driving mechanism, the number of the first protective shells is two, the two first protective shells are arranged up and down and symmetrically arranged, and the opposite sides of the two first protective shells are open; the number of the first cover shells is two, and the two first cover shells are symmetrically arranged, and the number of the second cover shells is two. It can ensure that the Raschig rings do not scatter during the filling process and all enter the inner cavity of the pipeline, ensuring that the actual filling amount is consistent with the planned filling amount; it can also ensure that the ends of the pipeline correspond and maintain the minimum spacing to match the specified size of the welding seam, reduce subsequent adjustments, and ensure coaxiality and stability during welding; the overall equipment is driven by a single driving source, which is easy to operate, saves labor, and is convenient for inspection and subsequent work.

Description

Technical Field

[0001] The invention relates to the field of pipeline filling equipment, and in particular to a Raschig ring filling device for an acetylene pipeline joint and a use method thereof. Background Art

[0002] "Mother-and-child filling pipe" usually refers to a structural design with two pipes of different diameters, such as Figure 2 As shown, several tubes with smaller diameters (sub-tubes 200) are filled and welded inside a tube with larger diameter (main tube 100). Such a design is widely used in the industrial field, such as the transportation of fluids, including liquids, gases, etc.;

[0003] At the end of the filling pipe, there is usually a certain space between the end of the sub-pipe 200 and the end of the mother pipe 100. When the two filling pipes are butt-jointed, a Raschig ring is filled in the gap at the joint as a filler, which can not only reduce the pressure drop at the pipe joint, thereby maintaining the overall flow efficiency of the pipe system, but also improve the corrosion resistance of the joint, and at the same time has the effect of improving the mechanical strength, etc.

[0004] Especially for pipelines that transport gases such as acetylene, since flammable and explosive gases such as acetylene have high requirements for stability during transportation, in order to prevent leakage at the pipeline joint or external gas infiltration, it is necessary to use Raschig rings to improve the stability of the transportation channel;

[0005] At present, most of the Raschig rings are filled into the ends of the pipes by manual filling before the pipes are butt-jointed. Since manual filling requires a certain operating space, there is a certain distance between the two butt-jointed ends of the pipes. When the two pipes are close to each other for butt-jointing, the Raschig rings are easy to scatter, and the filling amount at the joint will be less than the planned filling amount, which brings inconvenience to actual use.

[0006] Based on this, the present invention is proposed. Summary of the invention

[0007] According to an embodiment of the present invention, a Raschig ring filling device for an acetylene pipeline joint and a method for using the device are provided, which are used to solve the problem that the Raschig rings are easily scattered during the process of two existing pipelines being close to each other.

[0008] In a first aspect of the present invention, a Raschig ring filling device for an acetylene pipeline joint is provided.

[0009] The Raschig ring filling device at the acetylene pipeline joint comprises: a first protective shell, a first cover shell, a second cover shell and a driving mechanism, wherein the number of the first protective shells is two, the two first protective shells are arranged up and down and are symmetrically arranged, and the opposite sides of the two first protective shells are open; the number of the first cover shells is two, and the two first cover shells are symmetrically arranged, the number of the second cover shells is two, and the two second cover shells are symmetrically arranged, the two first cover shells correspond to the positions of the two second cover shells respectively, and the two first cover shells and the two second cover shells are located between the two first protective shells, and the number of the driving mechanisms is two, which are respectively arranged in the two first protective shells;

[0010] The driving mechanism includes a first guide plate, a first guide groove, a second guide plate, a second guide groove, a sliding rod, a moving block, and a first lead screw. There are two first guide plates, two of which are installed on the inner wall of the first protective shell, and the two first guide plates are symmetrically arranged. The first guide groove is provided on the first guide plate, and the first guide groove is L-shaped. There are two second guide plates, and the two second guide plates are respectively fitted with the two first guide plates. The second guide groove is provided on the second guide plate, and the second guide groove is inclined. The sliding rod passes through the first guide groove and the second guide groove. There are two moving blocks, two of which are respectively installed on the two second guide plates, the first lead screw is respectively threadedly connected to the two moving blocks, and the threads on both sides of the first lead screw are respectively symmetrically arranged.

[0011] Preferably, a second protective shell is installed on the outer wall of the two first protective shells, and the second protective shell is connected with the inner cavity of the two first protective shells; a rotating rod is rotatably installed in the inner cavity of the second protective shell, and two first gears are installed on the rotating rod; a first motor is installed on the outer wall of the second protective shell, and the output end of the first motor extends into the inner cavity of the second protective shell and is connected to the rotating rod;

[0012] The first lead screw is provided with a first bevel gear, the inner cavity of the first protective shell is rotatably mounted with a second bevel gear, and the second bevel gear is meshingly connected with the first bevel gear, and a second gear is mounted on the second bevel gear, and the second gear is meshingly connected with the first gear.

[0013] Preferably, a first arc-shaped cover plate and a second arc-shaped cover plate are respectively arranged on opposite sides of the first cover shell and the second cover shell, and the length of the first arc-shaped cover plate is greater than that of the second arc-shaped cover plate; a discharge port is installed on the outer wall of the second cover shell, and an electric valve is installed on the discharge port;

[0014] Two barrels are installed on the upper surface of the first protective shell located on the upper side, and the barrels are connected to the discharge port through a bellows.

[0015] Preferably, it further comprises four positioning mechanisms, and the positioning mechanisms are used to position the outer wall of the pipeline.

[0016] Preferably, the positioning mechanism comprises a mounting frame, a slideway, a push block, a positioning arm, a limiting groove, a driving frame and an oil pipe, wherein the mounting frame is fixedly mounted on the first protective shell, the push block is mounted in the slideway, and the positioning arm is mounted on the bottom of the push block; the limiting groove is provided on the push block, and the driving frame is mounted in the limiting groove;

[0017] The oil pipe passes through the outer wall of the first protective shell.

[0018] Preferably, the oil pipe comprises a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are respectively installed at two ends of the oil pipe, and the oil pipe, the first branch pipe and the second branch pipe are connected;

[0019] The first branch pipe and the second branch pipe are respectively provided with sealing sheets, and the first branch pipe and the second branch pipe are also respectively provided with pistons, the pistons pass through the sealing sheets, the outer wall of the pistons is sleeved with springs, and the springs are installed between the sealing sheets and the pistons;

[0020] A slide groove is provided on the outer wall of the first branch pipe, a push piece is installed on the piston in the first branch pipe, an extension rod is installed on the push piece, and the extension rod passes through the slide groove, and a through groove is provided on the first cover shell and the second cover shell respectively, and the width of the through groove is the same as the diameter of the push piece;

[0021] The bottom end of the piston located in the second branch pipe is connected to the driving frame.

[0022] Preferably, a moving part is installed at the bottom of the first protective shell located at the lower side.

[0023] Preferably, the moving part includes a base, a second lead screw, a second motor, a positioning rod and a moving platform, the second lead screw is rotatably mounted on the base, the second motor is mounted on the base, the output end of the second motor is connected to the second lead screw, the moving platform is threadedly connected to the second lead screw, the positioning rod is mounted on the base, and the positioning rod passes through the moving platform, and the upper surface of the moving platform is fixedly connected to the lower surface of the first protective shell located on the lower side.

[0024] In a second aspect of the present invention, a method for using a Raschig ring filling device at a joint of an acetylene pipeline is provided.

[0025] The method of use includes the following steps:

[0026] Using a support device to place two pipes to be filled horizontally, and ensure that the ends of the two pipes are respectively located between the first cover shell and the second cover shell;

[0027] Open the electric valve to discharge the Raschig ring in the barrel through the bellows and the discharge port into the space between the end of the pipeline and the first cover shell;

[0028] Turning on the first motor drives the first gear and the rotating rod to rotate, and the first lead screw rotates through the transmission of the second gear, the second bevel gear and the first bevel gear;

[0029] The first screw rotates to make the two moving blocks approach each other, so that the two second guide plates slide, and through the cooperation of the slide rod and the first cover shell and the second cover shell respectively move in the direction away from the end of the pipeline;

[0030] Push the pipe so that the end of the pipe moves together with the first cover shell. When the two first cover shells are in contact with each other, continue to push the pipe so that the end of the pipe fits with the first cover shell and the Raschig ring enters the inner cavity of the pipe completely.

[0031] The second guide plate continues to slide and move, so that the first cover shell and the second cover shell are separated from the contact with the pipeline and move into the inner cavity of the first protective shell.

[0032] Preferably, the method further comprises the following steps:

[0033] After the first cover shell and the second cover shell enter the inner cavity of the first protective shell, they contact the extension rod and push the extension rod;

[0034] The piston in the first branch pipe moves and pushes the hydraulic oil in the oil pipe into the second branch pipe, while pushing the piston in the second branch pipe;

[0035] The piston in the second branch pipe pushes the driving frame to move, so that the two push blocks connected to it move toward the pipeline, and finally the positioning arm fits the pipeline, and the corresponding positioning arms in the upper and lower directions fit the pipeline at the same time to complete the clamping;

[0036] The first cover shell and the second cover shell move toward the open side of the first protective shell until they are out of contact with the extension rod, and the piston is reset by the action of the spring, thereby resetting the positioning arm.

[0037] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0038] 1. The present invention provides a Raschig ring filling device for an acetylene pipeline joint and a method of using the device. The first cover shell and the second cover shell are provided to seal the pipeline to be filled, thereby preventing the Raschig rings from scattering during the filling process, and at the same time ensuring that all the Raschig rings enter the inner cavity of the pipeline, thereby ensuring that the actual filling amount is consistent with the planned filling amount.

[0039] 2. The driving mechanism in the present invention can make the first cover shell and the second cover shell move synchronously, and then the first cover shell and the second cover shell are automatically separated to make the two pipe ends correspond. In this process, it can be ensured that when the first cover shell and the second cover shell leave the pipe, the minimum spacing between the two pipes is consistent with the specified size of the welding seam, thereby reducing subsequent adjustments.

[0040] 3. After the first cover shell and the second cover shell in the present invention are separated, they can each drive the corresponding positioning mechanism to start, thereby automatically clamping and positioning the pipeline, ensuring that during the subsequent pipeline welding process, the two pipelines are always coaxially arranged and will not be displaced, thereby ensuring the stability of subsequent work.

[0041] 4. The driving mechanism and the positioning mechanism in the present invention are linked and driven by a single driving source. The coordination of the mechanical mechanism makes the overall operation of the equipment more stable and precise. At the same time, the degree of integration is high, the operation is simple, and the labor cost is saved.

[0042] 5. The moving part in the present invention can realize the translation work of the whole equipment. When the pipeline is filled and the subsequent spot welding, welding and other works are completed, the moving part can be used to make the equipment leave the pipeline to ensure that the pipeline joint is completely exposed, which is convenient for inspection and other works.

[0043] In summary, the Raschig ring filling device at the joint of the acetylene pipeline can ensure that the Raschig rings do not scatter during the filling process and all enter the inner cavity of the pipeline, ensuring that the actual filling amount is consistent with the planned filling amount; it can also ensure that the pipeline ends correspond and maintain a minimum spacing that matches the specified size of the welding seam, reducing subsequent adjustments and ensuring coaxiality and stability during welding; the overall equipment is driven by a single drive source, which is easy to operate, saves labor, and is convenient for inspection and subsequent work.

[0044] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0046] Figure 1 A schematic diagram of the three-dimensional structure of a Raschig ring filling device at a joint of an acetylene pipeline according to an embodiment of the present invention is shown;

[0047] Figure 2 A schematic diagram showing the installation relationship between the main pipe and the sub-pipe in the existing filling pipeline is shown;

[0048] Figure 3 A schematic diagram of the explosion structure of a driving mechanism of a Raschig ring filling device at a butt joint of an acetylene pipeline according to an embodiment of the present invention is shown;

[0049] Figure 4 A structural schematic diagram showing the coordination state of a driving mechanism and a positioning mechanism of a Raschig ring filling device at a butt joint of an acetylene pipeline according to an embodiment of the present invention;

[0050] Figure 5 A schematic diagram of the three-dimensional structure of a positioning mechanism of a Raschig ring filling device at a joint of an acetylene pipeline according to an embodiment of the present invention is shown;

[0051] Figure 6 A schematic diagram of the explosion structure of a positioning mechanism of a Raschig ring filling device at a butt joint of an acetylene pipeline according to an embodiment of the present invention is shown;

[0052] Figure 7 A schematic diagram of the three-dimensional structure of a first cover shell of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown;

[0053] Figure 8 A schematic structural diagram of a first housing of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown;

[0054] Fig. 9 A schematic diagram of the three-dimensional structure of a moving part of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown;

[0055] Fig.10 A front view showing a contact state between a first cover shell and a second cover shell of a Raschig ring filling device at a butt joint of an acetylene pipeline according to an embodiment of the present invention is shown;

[0056] Fig.11 A front view of a first cover shell and a second cover shell of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown in a separated state.

[0057] Fig.12 A schematic structural diagram of a first guide plate of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown.

[0058] Fig.13 A schematic structural diagram of a second guide plate of a Raschig ring filling device at an acetylene pipeline joint according to an embodiment of the present invention is shown.

[0059] The accompanying drawings are marked as follows: 1. first protective shell; 2. first cover shell; 21. first arc-shaped cover plate; 3. second cover shell; 31. second arc-shaped cover plate; 32. discharge port; 33. electric valve; 4. driving mechanism; 41. first guide plate; 4101. first guide groove; 42. second guide plate; 4201. second guide groove; 43. sliding rod; 44. moving block; 45. first lead screw; 46. auxiliary guide plate; 5. second protective shell; 6. rotating rod; 7. first gear; 8. first bevel gear; 9. first motor; 10. second bevel gear; 11. second gear; 12 , barrel, 13, bellows, 14, positioning mechanism, 141, mounting frame, 142, slide, 143, push block, 144, positioning arm, 145, limit groove, 146, drive frame, 147, oil pipe, 1471, first branch pipe, 1472, second branch pipe, 148, sealing plate, 149, piston, 1410, spring, 1411, slide groove, 1412, push plate, 1413, extension rod, 1414, through groove, 15, moving part, 151, base, 152, second lead screw, 153, second motor, 154, positioning rod, 155, moving table. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0062] like Figure 1 , Figure 3 and Figure 7 , Figure 8As shown, the Raschig ring filling device at the joint of the acetylene pipeline includes: a first protective shell 1, a first cover shell 2, a second cover shell 3 and a driving mechanism 4. The number of the first protective shells 1 is two, and the two first protective shells 1 are arranged up and down and symmetrically arranged with each other. The two first protective shells 1 are hollow cavities, and the opposite sides of the two first protective shells 1 are open. The number of the first cover shells 2 is two, and the two first cover shells 2 are symmetrically arranged with each other. The number of the second cover shells 3 is two, and the two second cover shells 3 are symmetrically arranged with each other. The two first cover shells 2 correspond to the positions of the two second cover shells 3 respectively, and the two first cover shells 2 and the two second cover shells 3 are located between the two first protective shells 1. The first and second arc-shaped cover plates 21 and 31 are respectively arranged on opposite sides of the first and second cover shells 2 and 3. The length of the first arc-shaped cover plate 21 is greater than that of the second arc-shaped cover plate 31. When the first and second cover shells 2 and 3 at corresponding positions contact each other, the first arc-shaped cover plate 21 and the second arc-shaped cover plate 31 can enclose a cylindrical space. The end of the pipe to be filled is placed on the first arc-shaped cover plate 21, and the outer wall of the pipe fits with the first arc-shaped cover plate 21. Figure 7 As shown, since the first arc-shaped cover plate 21 is longer than the second arc-shaped cover plate 31, the space below the end of the pipeline is closed, while the space above is left to communicate with the outside world. The outer wall of the second cover shell 3 is installed with a discharge port 32, and the position of the discharge port 32 can correspond to the port of the pipeline to be filled. The discharge port 32 is installed with an electric valve 33, which is an existing device. In this embodiment, the Q941F model is selected. Two barrels 12 are installed on the upper surface of the first protective shell 1 on the upper side. The barrel 12 is connected to the discharge port 32 through a bellows 13. The barrel 12 is filled with Raschig ring filler. The particle size of the Raschig ring filler is selected to be larger than the diameter of the sub-tube 200 in the pipeline to prevent the Raschig ring from entering the sub-tube 200. The bellows 13 is an existing device, which is a tubular material with a wavy cross-section. In this embodiment, a plastic material is selected, which has the properties of stretching and deformation. When the discharge port 32 moves with the second cover shell 3, it can be deformed according to demand without being damaged. Opening the electric valve 33 can ensure that the Raschig rings in the barrel 12 pass through the bellows 13 and are discharged through the discharge port 32, and closing the electric valve 33 stops the discharge.

[0063] There are two driving mechanisms 4, which are respectively arranged in the two first protective shells 1. The driving mechanism 4 can drive the two first cover shells 2 to approach each other and then move into the bottom first protective shell 1. At the same time, the two second cover shells 3 can be driven to approach each other and then move into the top first protective shell 1.

[0064] Reference below Figure 3 , Fig.12 and Fig.13, the driving mechanism 4 is introduced. The driving mechanism 4 includes a first guide plate 41, a first guide groove 4101, a second guide plate 42, a second guide groove 4201, a slide bar 43, a moving block 44, and a first lead screw 45. There are two first guide plates 41. The two first guide plates 41 are installed on the inner wall of the first protective shell 1, and the two first guide plates 41 are symmetrically arranged. The first guide groove 4101 is opened on the first guide plate 41. The first guide groove 4101 is L-shaped, that is, it is divided into two parts: a horizontal section and a vertical section. There are two second guide plates 42, and the two second guide plates 42 are respectively attached to the two first guide plates 41. The second guide groove 4201 is opened on the second guide plate 42, and the second guide groove 4201 is inclined. The slide bar 43 passes through the first guide groove 4101 and the second guide groove 4201. When the second guide plate 42 moves, the slide bar 43 slides in the horizontal section of the first guide groove 4101. During this process, the relative position of the slide bar 43 and the second guide groove 4201 remains unchanged. When the slide bar 43 moves to the connection between the horizontal section and the vertical section of the first guide groove 4101, under the joint limiting action of the first guide groove 4101 and the second guide groove 4201, the slide bar 43 slides toward the vertical section and also slides in the second guide groove 4201, so that the slide bar 43 moves to the inner cavity of the first protective shell 1. In this embodiment, the first cover shell 2 and the second cover shell 3 are respectively connected to the slide bar 43 corresponding to the position, thereby ensuring that the movement of the slide bar 43 drives the movement of the first cover shell 2 and the second cover shell 3; wherein the cross-sectional shape of the slide bar 43 is rectangular, and the side length is adapted to the width of the first guide groove 4101 and the second guide groove 4201, which can prevent the slide bar 43 from rotating during the movement process. There are two moving blocks 44, which are respectively mounted on the two second guide plates 42. The first lead screw 45 is threadedly connected to the two moving blocks 44, and the threads on both sides of the first lead screw 45 are symmetrically arranged. When the first lead screw 45 rotates, it can drive the two moving blocks 44 to move away from or closer to each other synchronously.

[0065] In this embodiment, the two first guide plates 41 are positioned in correspondence to ensure that the two first shells 2 are fitted on opposite sides when they move toward the inner cavity of the first protective shell 1. The thickness of the outer wall of the two first shells 2 on opposite sides is 1.5 mm. After the two are fitted, the ends of the two pipes to be filled are manually fitted on the vertical surface of the first shell 2. When the first shell 2 is moved into the first protective shell 1, the distance between the two ends of the pipes is 3 mm, which meets the reserved seam width for welding.

[0066] In addition, in order to ensure the stability of the movement of the first cover shell 2 and the second cover shell 3 in this embodiment, two mutually symmetrical auxiliary guide plates 46 are also provided in the driving mechanism 4, and the two auxiliary guide plates 46 correspond to the positions of the two first guide plates 41 respectively. The auxiliary guide plate 46 also has a first guide groove 4101, and the direction of the first guide groove 4101 is the same as that of the first guide groove 4101 on the first guide plate 41. A slide bar 43 is installed in the first guide groove 4101 provided on the auxiliary guide plate 46, and the slide bar 43 located in the bottom first protective shell 1 is connected to the first cover shell 2, and the slide bar 43 located in the top first protective shell 1 is connected to the second cover shell 3.

[0067] In order to start the two driving mechanisms synchronously, the following scheme is proposed: Figure 3 The outer wall of the two first protective shells 1 is installed with a second protective shell 5, the second protective shell 5 is connected with the inner cavity of the two first protective shells 1, and the second protective shell 5 and the two first protective shells 1 are fixed to each other and form a whole. The inner cavity of the second protective shell 5 is rotatably installed with a rotating rod 6, and two first gears 7 are installed on the rotating rod 6. The outer wall of the second protective shell 5 is installed with a first motor 9, and the output end of the first motor 9 extends into the inner cavity of the second protective shell 5 and is connected to the rotating rod 6. Turning on the first motor 9 can drive the two first gears 7 to rotate synchronously. A first bevel gear 8 is provided on the first lead screw 45, and a second bevel gear 10 is rotatably installed in the inner cavity of the first protective shell 1, and the second bevel gear 10 is meshed with the first bevel gear 8. A second gear 11 is installed on the second bevel gear 10, and the second gear 11 is meshed with the first gear 7. When the two first gears 7 rotate synchronously, the two second gears 11 can be driven to rotate respectively. At this time, the rotation of the two second bevel gears 10 can drive the two first bevel gears 8 to rotate. In this embodiment, the two first gears 7 rotate synchronously in the same direction, which eventually leads to opposite rotation directions of the two first lead screws 45. Therefore, the spiral directions of the corresponding parts on the two first lead screws 45 are set in opposite directions, thereby ensuring that the moving directions of the moving blocks 44 on the two first lead screws 45 remain synchronized.

[0068] The specific working principle of this embodiment is as follows: Place the pipeline using an external support frame or other equipment so that the end of the pipeline is placed in the space enclosed by the first cover shell 2 and the second cover shell 3, and ensure that the end of the pipeline does not contact the second cover shell 3, open the electric valve 33, and allow the Raschig ring in the barrel 12 to be sent into the end of the pipeline and the first cover shell 2 and the second cover shell 3 through the bellows 13 and the discharge port 32. When the discharge is completed, close the electric valve 33, and then manually fit the end of the pipeline to the vertical surface of the first cover shell 2 so that the Raschig ring is completely filled into the inner cavity of the pipeline. Turn on the first motor 9 to drive the two first gears 7 and the rotating rod 6 to rotate together. By utilizing the meshing of the first gear 7 and the second gear 11, the two second gears 11 can each drive the second bevel gear 10 to rotate synchronously. By utilizing the meshing of the second bevel gear 10, the two first bevel gears 8 can drive the corresponding first lead screw 45 to rotate. Combined with Fig.10 and Fig.11 When the first lead screw 45 rotates, the two moving blocks 44 screwed thereto approach each other, thereby driving the two second guide plates 42 to approach each other. At this time, the slide bar 43 slides in the horizontal section of the first guide groove 4101. During this process, the relative position of the slide bar 43 and the second guide groove 4201 remains unchanged. When the slide bar 43 moves to the connection between the horizontal section and the vertical section in the first guide groove 4101, under the common limiting action of the first guide groove 4101 and the second guide groove 4201, the slide bar 43 slides toward the vertical section and also slides in the second guide groove 4201, so that the slide bar 43 drives the first cover shell 2 or the second cover shell 3 connected thereto to move into the inner cavity of the first protective shell 1. During this process, when the first cover shell 2 and the second cover shell 3 move horizontally, the staff manually pushes the pipeline so that the end of the pipeline does not separate from the vertical surface of the first cover shell 2.

[0069] This embodiment can realize the automatic merging and separation of the first cover shell 2 and the second cover shell 3, ensure that during the process of pipe filling, the end of the pipe can be kept in a semi-closed state, avoid the scattering of Raschig rings, and ensure that the actual filling amount is equal to the planned filling amount. At the same time, the first cover shell 2 and the second cover shell 3 can be automatically evacuated, and the minimum spacing between the pipes during evacuation can be matched with the width requirements of the welding seam. At the same time, the equipment adopts mechanical structure linkage, relies only on a single driving source, has high precision and stable operation.

[0070] When the two pipes are filled and in contact and their positions are aligned, welding can be performed. In order to ensure the relative stability of the two pipes during welding, the following solution is proposed. Figure 1 , Figure 4-Figure 6A positioning mechanism 14 is installed on the outer wall of the first protective shell 1. There are four positioning mechanisms 14. The four positioning mechanisms 14 are symmetrically arranged relative to the two first protective shells 1, and the positioning mechanisms 14 corresponding to the upper and lower positions are symmetrically arranged with each other. The two positioning mechanisms 14 corresponding in the upper and lower directions cooperate with each other to position the outer wall of the pipeline. When the end of a pipeline to be filled is located between the first cover shell 2 and the second cover shell 3, the ends of the two positioning mechanisms 14 on the opposite side are cocircular and coaxial with the pipeline. When the first cover shell 2 and the second cover shell 3 move horizontally and then move longitudinally to enter the inner cavity of the first protective shell 1, the two positioning mechanisms 14 corresponding to the upper and lower positions automatically and synchronously approach and clamp the pipeline to achieve the positioning of the pipeline.

[0071] Reference below Figures 4 to 6 The positioning mechanism 14 is introduced. The positioning mechanism 14 includes a mounting frame 141, a slide 142, a push block 143, a positioning arm 144, a limiting groove 145, a driving frame 146 and an oil pipe 147. The mounting frame 141 is fixedly mounted on the first protective shell 1. There are two slides 142, and the two slides 142 are symmetrically arranged relative to the mounting frame 141. The push block 143 is installed in the slide 142. The positioning arm 144 is installed at the bottom of the push block 143. The bottom end of the positioning arm 144 is arranged in an arc shape and is cocircular. The circle is concentric with the axis of the pipeline after the pipeline is placed. The slide 142, the push block 143 and the positioning arm 144 are arranged to be inclined along the radial direction of the circle where the bottom end arc of the positioning arm 144 is located, so as to ensure that the moving direction of the push block 143 and the positioning arm 144 is along the radial direction of the circle. The limiting groove 145 is arranged on the push block 143, and the driving frame 146 is installed in the limiting groove 145. Figure 6 As shown, the two ends of the driving frame 146 are inclined, and the inclination direction is perpendicular to the push block 143. When the driving frame 146 moves downward, under the limit cooperation of the slideway 142, the two push blocks 143 move downward and approach inward at the same time, and the direction is the radial direction of the circle where the bottom arc of the positioning arm 144 is located, so that the bottom ends of the two positioning arms 144 can simultaneously fit the outer wall of the pipeline. When the positioning mechanisms 14 corresponding to the upper and lower positions are opened together, a pipeline can be clamped.

[0072] The oil pipe 147 is connected to the driving frame 146. The oil pipe 147 passes through the outer wall of the first protective shell 1, ensuring that the two ends of the oil pipe 147 are respectively located at the inner and outer sides of the first protective shell 1. The oil pipe 147 includes a first branch pipe 1471 and a second branch pipe 1472, which are respectively installed at the two ends of the oil pipe 147, and the inner cavities of the oil pipe 147, the first branch pipe 1471 and the second branch pipe 1472 are connected. The first branch pipe 1471 and the second branch pipe 1472 are perpendicular to the oil pipe 147. The first branch pipe 1471 and the second branch pipe 1472 are respectively installed with sealing sheets 148. The inner cavities of the oil pipe 147, the first branch pipe 1471 and the second branch pipe 1472 and the space between the two sealing sheets 148 are filled with hydraulic oil. The first branch pipe 1471 and the second branch pipe 1472 are also respectively installed with pistons 149, and the pistons 149 pass through the sealing sheets 148. The pistons 149 are combined with the inner walls of the first branch pipe 1471 and the second branch pipe 1472 to ensure good air tightness between the two. Since the hydraulic oil is incompressible, when one piston 149 moves, the other piston can be passively moved synchronously by the push of the hydraulic oil. The outer wall of the piston 149 is sleeved with a spring 1410, which is installed between the sealing sheet 148 and the piston 149. When the piston 149 moves passively, it can stretch or compress the spring 1410. When the external force is removed, the piston 149 can be reset by the pulling force or elastic force of the spring 1410.

[0073] In addition, a slide groove 1411 is provided on the outer wall of the first branch pipe 1471, and a push piece 1412 is installed on the piston 149 in the first branch pipe 1471. An extension rod 1413 is installed on the push piece 1412, and the extension rod 1413 passes through the slide groove 1411. A through groove 1414 is provided on the first cover shell 2 and the second cover shell 3, respectively, and the width of the through groove 1414 is the same as the diameter of the push piece 1412. The bottom end of the piston 149 in the second branch pipe 1472 is connected to the driving frame 146. When the first cover shell 2 moves downward or the second cover shell 3 moves upward and enters the inner cavity of the corresponding first protective shell 1, the first branch pipe 1471 passes through the through groove 1414. At the same time, the extension rod 1413 is pushed by the limit of the outer wall of the first cover shell 2 and the second cover shell 3, so that the push piece 1412 drives the piston 149 to move, and the stability of the extension rod 1413 and the push piece 1412 is ensured by the limit of the slide groove 1411.

[0074] The specific working principle of this embodiment is as follows: when the first cover shell 2 and the second cover shell 3 corresponding to the upper and lower positions finish lateral movement and begin to longitudinally enter the inner cavity of the first protective shell 1 respectively opposite to each other, the through groove 1414 corresponds to the first branch pipe 1471. As the first cover shell 2 and the second cover shell 3 each move a certain distance, the extension rod 1413 and the push piece 1412 are pushed to move in the first branch pipe 1471, and the spring 1410 on the outer wall of the piston 149 is stretched, so that the piston 149 located in the first branch pipe 1471 moves and pushes the hydraulic oil to flow, so that the other piston 149 moves in the opposite direction, and the spring 1410 on the piston 149 is compressed, and the driving frame 146 is pushed to move, so that the two push blocks 143 drive the positioning arm 144 to fit the outer wall of the pipeline, so as to clamp the pipeline. When the work is completed, the first cover shell 2 and the second cover shell 3 move in the opposite direction in the longitudinal direction for a certain distance, and the piston 149 can be reset under the action of the elastic force or tension of the spring 1410, and the positioning arm 144 is finally reset.

[0075] In this embodiment, the two positioning mechanisms 14 corresponding to the upper and lower positions can hold and clamp the pipeline, thereby ensuring that the pipeline does not misalign or shake during welding. At the same time, the positioning mechanism 14 cooperates with the first cover shell 2 and the second cover shell 3 to automatically clamp the pipeline after the first cover shell 2 and the second cover shell 3 are moved to specific positions. The accuracy and stability of the equipment are improved through the action of the mechanical structure. In addition, the first cover shell 2 and the second cover shell 3 can be reset to automatically release the clamping of the pipeline. The operation is simple, no staff participation is required, labor costs are reduced, and work efficiency is improved.

[0076] The Raschig ring filling device at the acetylene pipeline joint of this embodiment also includes the following scheme: the bottom of the first protective shell 1 located at the lower side is equipped with a moving part 15. The moving part 15 can realize the overall movement of the first protective shell 1 and the second protective shell 5. After the pipeline is filled and welded, the pipeline connection can be completely exposed for easy inspection.

[0077] Combine the following Fig. 9, the moving part 15 is introduced. The moving part 15 includes a base 151, a second lead screw 152, a second motor 153, a positioning rod 154 and a moving platform 155. The second lead screw 152 is rotatably installed on the base 151, and the second motor 153 is installed on the base 151. The output end of the second motor 153 is connected with the second lead screw 152. Turning on the second motor 153 can drive the second lead screw 152 to rotate. The moving platform 155 is threadedly connected with the second lead screw 152. When the second lead screw 152 rotates, the moving platform 155 can be driven to move axially along the second lead screw 152. The positioning rod 154 is installed on the base 151, and the positioning rod 154 passes through the moving platform 155. The positioning rod 154 is used to limit the moving platform 155 to ensure stable movement. The upper surface of the moving platform 155 is fixedly connected to the lower surface of the first protective shell 1 located at the lower side. In actual use, the second motor 153 needs to be turned on to drive the second lead screw 152 to rotate, so that the moving platform 155 moves, thereby driving the first protective shell 1 connected thereto to move together.

[0078] In this way, the overall displacement of the first protective shell 1 can be achieved, which is convenient for inspection, operation or maintenance of the pipeline.

[0079] In addition, another embodiment of the present invention further provides a method for using a Raschig ring filling device at a joint of an acetylene pipeline, comprising:

[0080] Place the two pipes to be filled horizontally using a bracket or other equipment, and ensure that the ends of the two pipes are respectively located between the first cover 2 and the second cover 3;

[0081] Open the electric valve 33 to discharge the Raschig rings in the barrel 12 through the bellows 13 and the discharge port 32 to the space between the end of the pipeline and the first housing 2;

[0082] Turn on the first motor 9 to drive the first gear 7 and the rotating rod 6 to rotate, and through the transmission of the second gear 11, the second bevel gear 10 and the first bevel gear 8, the first lead screw 45 rotates;

[0083] The first lead screw 45 rotates to make the two moving blocks 44 approach each other, so that the two second guide plates 42 slide, and through the cooperation of the slide rod 43, the first cover shell 2 and the second cover shell 3 move respectively in the direction away from the end of the pipeline;

[0084] Push the pipe so that the end of the pipe moves together with the first cover shell 2. When the two first cover shells 2 are in contact with each other, continue to push the pipe so that the end of the pipe fits with the first cover shell 2 and all the Raschig rings enter the inner cavity of the pipe.

[0085] The second guide plate 42 continues to slide and move, so that the first cover shell 2 and the second cover shell 3 are separated from the contact with the pipeline and move into the inner cavity of the first protective shell 1.

[0086] The following steps are also included:

[0087] After the first cover shell 2 and the second cover shell 3 enter the inner cavity of the first protective shell 1, they come into contact with the extension rod 1413 and push the extension rod 1413;

[0088] The piston 149 in the first branch pipe 1471 moves and pushes the hydraulic oil in the oil pipe 147 into the second branch pipe 1472, while pushing the piston 149 in the second branch pipe 1472;

[0089] The piston 149 in the second branch pipe 1472 pushes the driving frame 146 to move, so that the two push blocks 143 connected thereto move toward the pipeline, and finally the positioning arms 144 are attached to the pipeline, and the corresponding positioning arms 144 in the upper and lower directions are attached to the pipeline at the same time to complete the clamping;

[0090] The first cover shell 2 and the second cover shell 3 move toward the open side of the first protective shell 1 until they are out of contact with the extension rod 1413 , and the piston 149 is reset by the action of the spring 1410 , thereby resetting the positioning arm 144 .

[0091] Through the above steps, the automatic filling of the Raschig ring is realized, which can ensure that the Raschig ring completely fills the space at the connection of the two pipes. At the same time, the two pipes can be positioned synchronously to avoid misalignment during the filling process, thereby improving the accuracy of the Raschig ring filling operation. The overall process is controlled by a mechanical structure, with a high degree of automation, flexibility and safety, and is easy to operate and use.

[0092] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A Raschig ring filling device for acetylene pipeline joints, characterized in that: include: A first protective shell (1), a first cover shell (2), a second cover shell (3) and a driving mechanism (4), wherein the number of the first protective shells (1) is two, the two first protective shells (1) are arranged up and down and are symmetrically arranged, and the opposite sides of the two first protective shells (1) are open; the number of the first cover shells (2) is two, the two first cover shells (2) are symmetrically arranged, the number of the second cover shells (3) is two, the two second cover shells (3) are symmetrically arranged, the two first cover shells (2) correspond to the positions of the two second cover shells (3), and the two first cover shells (2) and the two second cover shells (3) are located between the two first protective shells (1); the number of the driving mechanisms (4) is two, and they are respectively arranged in the two first protective shells (1); The driving mechanism (4) comprises a first guide plate (41), a first guide groove (4101), a second guide plate (42), a second guide groove (4201), a sliding rod (43), a moving block (44), and a first lead screw (45); the number of the first guide plates (41) is two, the two first guide plates (41) are mounted on the inner wall of the first protective shell (1), and the two first guide plates (41) are symmetrically arranged with respect to each other; the first guide groove (4101) is formed on the first guide plate (41), and the first guide groove (4101) is arranged in an L shape; the number of the second guide plates (42) is two, and the two first guide plates (41) are arranged in an L shape; The second guide plates (42) are respectively fitted with the two first guide plates (41); the second guide grooves (4201) are formed on the second guide plates (42), and the second guide grooves (4201) are arranged obliquely; the slide bar (43) passes through the first guide grooves (4101) and the second guide grooves (4201); the number of the moving blocks (44) is two, and the two moving blocks (44) are respectively mounted on the two second guide plates (42); the first lead screw (45) is respectively threadedly connected to the two moving blocks (44), and the threads on both sides of the first lead screw (45) are respectively arranged symmetrically with each other; A first arc-shaped cover plate (21) and a second arc-shaped cover plate (31) are respectively arranged on opposite sides of the first cover shell (2) and the second cover shell (3), and the length of the first arc-shaped cover plate (21) is greater than that of the second arc-shaped cover plate (31); a discharge port (32) is installed on the outer wall of the second cover shell (3), and an electric valve (33) is installed on the discharge port (32); Two barrels (12) are mounted on the upper surface of the first protective shell (1) located on the upper side, and the barrels (12) are connected to the discharge port (32) via a bellows (13); The two pipes to be filled are placed horizontally using a support device, and the ends of the two pipes are ensured to be located between the first cover shell (2) and the second cover shell (3) respectively.

2. The Raschig ring filling device for acetylene pipeline joint according to claim 1, characterized in that: A second protective shell (5) is mounted on the outer wall of the two first protective shells (1), and the second protective shell (5) is communicated with the inner cavity of the two first protective shells (1); a rotating rod (6) is rotatably mounted in the inner cavity of the second protective shell (5), and two first gears (7) are mounted on the rotating rod (6); a first motor (9) is mounted on the outer wall of the second protective shell (5), and an output end of the first motor (9) extends into the inner cavity of the second protective shell (5) and is connected to the rotating rod (6); The first lead screw (45) is provided with a first bevel gear (8); a second bevel gear (10) is rotatably mounted in the inner cavity of the first protective shell (1), and the second bevel gear (10) is meshingly connected with the first bevel gear (8); a second gear (11) is mounted on the second bevel gear (10), and the second gear (11) is meshingly connected with the first gear (7).

3. The Raschig ring filling device for acetylene pipeline joint according to claim 2, characterized in that: It also comprises four positioning mechanisms (14), wherein the positioning mechanisms (14) are used to position the outer wall of the pipeline.

4. The Raschig ring filling device for acetylene pipeline joint according to claim 3, characterized in that: The positioning mechanism (14) comprises a mounting frame (141), a slideway (142), a push block (143), a positioning arm (144), a limiting groove (145), a driving frame (146) and an oil pipe (147); the mounting frame (141) is fixedly mounted on the first protective shell (1); the push block (143) is mounted in the slideway (142); the positioning arm (144) is mounted at the bottom of the push block (143); the limiting groove (145) is arranged on the push block (143); and the driving frame (146) is mounted in the limiting groove (145); The oil pipe (147) passes through the outer wall of the first protective shell (1).

5. The Raschig ring filling device for acetylene pipeline joint according to claim 4, characterized in that: The oil pipe (147) comprises a first branch pipe (1471) and a second branch pipe (1472), wherein the first branch pipe (1471) and the second branch pipe (1472) are respectively installed at two ends of the oil pipe (147), and the oil pipe (147), the first branch pipe (1471) and the second branch pipe (1472) are in communication; A sealing sheet (148) is installed in each of the first branch pipe (1471) and the second branch pipe (1472), and a piston (149) is installed in each of the first branch pipe (1471) and the second branch pipe (1472). The piston (149) passes through the sealing sheet (148). The outer wall of the piston (149) is sleeved with a spring (1410), and the spring (1410) is installed between the sealing sheet (148) and the piston (149); The outer wall of the first branch pipe (1471) is provided with a slide groove (1411), the piston (149) located in the first branch pipe (1471) is provided with a push piece (1412), the push piece (1412) is provided with an extension rod (1413), the extension rod (1413) passes through the slide groove (1411), and the first cover shell (2) and the second cover shell (3) are respectively provided with through grooves (1414), the width of the through grooves (1414) being the same as the diameter of the push piece (1412); The bottom end of the piston (149) located in the second branch pipe (1472) is connected to the driving frame (146).

6. The Raschig ring filling device for acetylene pipeline joint according to claim 5, characterized in that: The bottom of the first protective shell (1) located at the lower side is equipped with a moving part (15).

7. The Raschig ring filling device for acetylene pipeline joint according to claim 6, characterized in that: The moving part (15) comprises a base (151), a second lead screw (152), a second motor (153), a positioning rod (154) and a moving platform (155); the second lead screw (152) is rotatably mounted on the base (151); the second motor (153) is mounted on the base (151); an output end of the second motor (153) is connected to the second lead screw (152); the moving platform (155) is threadedly connected to the second lead screw (152); the positioning rod (154) is mounted on the base (151), and the positioning rod (154) passes through the moving platform (155); and an upper surface of the moving platform (155) is fixedly connected to a lower surface of the first protective shell (1) located at a lower side.

8. A method for using a Raschig ring filling device at an acetylene pipeline joint, characterized in that: The implementation of the method relies on the Raschig ring filling device at the acetylene pipeline joint as described in claim 7 above, and includes the following steps: Opening the electric valve (33) allows the Raschig rings in the barrel (12) to pass through the bellows (13) and the discharge port (32) and discharge the Raschig rings into the space between the end of the pipeline and the first housing (2); Turning on the first motor (9) drives the first gear (7) and the rotating rod (6) to rotate, and the first lead screw (45) rotates through the transmission of the second gear (11), the second bevel gear (10) and the first bevel gear (8); The first lead screw (45) rotates to move the two moving blocks (44) closer to each other, causing the two second guide plates (42) to slide, and through the cooperation of the slide rod (43), the first cover shell (2) and the second cover shell (3) are respectively moved in a direction away from the end of the pipeline; Pushing the pipeline so that the end of the pipeline moves together with the first cover shell (2); when the two first cover shells (2) are in contact with each other, continuing to push the pipeline so that the end of the pipeline fits with the first cover shell (2) and the Raschig ring completely enters the inner cavity of the pipeline; The second guide plate (42) continues to slide and move, causing the first cover shell (2) and the second cover shell (3) to break away from contact with the pipeline and move into the inner cavity of the first protective shell (1).

9. The method for using the Raschig ring filling device at the joint of acetylene pipeline according to claim 8, characterized in that: The following steps are also included: After the first cover shell (2) and the second cover shell (3) enter the inner cavity of the first protective shell (1), they come into contact with the extension rod (1413) and push the extension rod (1413); The piston (149) in the first branch pipe (1471) moves and pushes the hydraulic oil in the oil pipe (147) into the second branch pipe (1472), while pushing the piston (149) in the second branch pipe (1472); The piston (149) in the second branch pipe (1472) pushes the driving frame (146) to move, thereby causing the two push blocks (143) connected thereto to move toward the pipeline, and finally causing the positioning arm (144) to fit the pipeline, and the positioning arms (144) corresponding to the upper and lower directions simultaneously fit the pipeline to complete clamping; The first cover shell (2) and the second cover shell (3) move toward the open side of the first protective shell (1) until they are out of contact with the extension rod (1413), and the piston (149) is reset by the action of the spring (1410), thereby resetting the positioning arm (144).

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