Reinforcing device for LNG pipeline butt joint port

Abstract

The utility model belongs to the technical field of LNG (Liquefied Natural Gas) pipelines, and particularly relates to a reinforcing device of an LNG pipeline butt joint port, which comprises symmetrically arranged pipelines, a connecting component is arranged between the two pipelines, a fixed anti-falling mechanism is arranged on the outer sides of the pipelines, and a limiting component is arranged in the fixed anti-falling mechanism; the fixing anti-falling mechanism comprises a fixing disc, the fixing disc is arranged on the outer side of the pipeline on one side in a sleeving mode, a mounting groove is formed in the outer wall of the fixing disc, a turbine ring is rotatably mounted in the mounting groove, a shell is fixedly mounted on the side wall of the fixing disc, a hollow shaft penetrating through the shell is rotatably mounted in the shell, and a worm meshed with the turbine ring is arranged on the outer side of the hollow shaft in a sleeving mode. One end of the hollow shaft is detachably connected with a hand-cranking handle; one end of the shell far away from the hand-cranking handle is provided with a limiting assembly; according to the device, through the cooperation of the fixed anti-falling mechanism and the limiting assembly, the pipeline can be conveniently and rapidly connected and fixed, the pipeline is tightly attached, the sealing performance is improved, connection looseness between the pipelines can be avoided, and the leakage risk of the pipelines is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG pipeline technical field especially, it relates to a kind of reinforcing device of LNG pipeline butt joint. BACKGROUND

[0002] Liquefied natural gas (LNG), main component is methane, with its clean, efficient characteristics, become the energy form that is watched closely today.It is colorless, odorless, nontoxic and non-corrosive, in the process of energy transformation, plays a very key role.LNG is greatly reduced in volume under super-low temperature, only about 1 / 625 of the volume of the same amount of gaseous natural gas, and the mass is only about 45% of the same volume of water, this characteristic makes its storage and transportation more efficient and convenient.LNG almost does not produce pollutants after combustion, and air pollution is very small, and the high heat released provides stable energy support for industrial production, resident life, etc., is the advanced energy without a doubt.

[0003] In the wide application of LNG, as the key channel of conveying, the importance of LNG pipeline is self-evident.At present, the connection between two groups of LNG pipelines mostly adopts flange connection mode.This connection mode has certain convenience in installation and maintenance, and can quickly realize the butt joint of pipeline in the initial stage of pipeline system construction;however, in the LNG conveying process, due to the flow characteristics of medium and the complex influence of external environment, LNG pipeline inevitably produces vibration;this vibration is not temporary, but exists continuously in long-term conveying operation;with the passage of time, the continuous vibration continuously acts on the connection part, so that the screw on the flange bears alternating stress;under the repeated action of alternating stress and long-term sun exposure and corrosion, the screw gradually shows loose signs;so that LNG pipeline produces leakage, thereby causing LNG to leak out;the leakage of LNG not only causes energy waste, but also can cause safety accidents, and seriously threatens the surrounding environment and personnel safety. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research thereon, and after paying a lot of creative labor, the utility model is completed.

[0005] Specifically, the technical problem to be solved by the utility model is to provide a reinforcing device for LNG pipeline butt joint, to solve the technical problem that the flange at the connection of the current LNG pipeline is loose, causing the pipeline to leak.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The application discloses a reinforcing device for LNG pipeline butt joint, which comprises symmetrically arranged pipelines, a connecting assembly arranged between the two pipelines, a fixing anti-off mechanism arranged outside the pipelines, and a limiting assembly arranged in the fixing anti-off mechanism.

[0008] The fixing anti-off mechanism comprises a fixing disc which is sleeved outside one of the pipelines, an installation groove is formed in the outer wall of the fixing disc, a turbine ring is rotatably installed in the installation groove, an outer shell is fixedly installed on the side wall of the fixing disc, a hollow shaft which penetrates through the outer shell is rotatably installed in the outer shell, a worm which is engaged with the turbine ring is sleeved outside the hollow shaft, a hand crank is detachably connected to one end of the hollow shaft, and the limiting assembly is arranged at the end of the outer shell which is away from the hand crank.

[0009] As an improved technical scheme, the fixing anti-off mechanism further comprises a threaded cylinder, a plurality of transmission grooves which are communicated with the installation grooves are symmetrically formed in the interior of the turbine ring, the threaded cylinder is rotatably installed in the transmission grooves and penetrates through the turbine ring, a gear is sleeved outside the threaded cylinder, a plurality of gear teeth which are engaged with the gear are symmetrically arranged on the inner wall of the turbine ring, a screw rod is threadedly connected to the inner side of the threaded cylinder, one end of the screw rod penetrates through the through hole formed in the end of the pipeline which is away from the fixing disc, the outer side of the pipeline which is away from the fixing disc is symmetrically sleeved with a baffle, one end of the baffle is fixedly connected with the screw rod, and a first spring is sleeved outside the screw rod on the side of the baffle which is close to the fixing disc.

[0010] As an improved technical scheme, a limiting ring is rotatably embedded at the symmetric position of the inner wall of the installation groove, the limiting ring is fixedly connected with the turbine ring, one end of the baffle on one side is connected with a plug, and the two baffles are connected through plug insertion.

[0011] As an improved technical scheme, the limiting assembly comprises a transmission rod which is slidably installed in the hollow shaft, symmetrically arranged guide strips are arranged on the outer wall of the hollow shaft, a plurality of guide grooves which are matched with the guide strips are symmetrically formed in the inner wall of the hollow shaft, a fixing cylinder which is sleeved outside the transmission rod is connected to one end of the outer shell, a push plate and a second spring are sleeved in the fixing cylinder at one end of the transmission rod, the push plate is located on the side close to the outer shell, symmetrically arranged fixing blocks are arranged on the outer side of one end of the transmission rod which is close to the fixing cylinder, and a plurality of clamping grooves which are matched with the fixing blocks are symmetrically formed in one end of the fixing cylinder.

[0012] As an improved technical scheme, the push plate is rotatably connected with the transmission rod through a bearing, a hexagonal groove is formed in one end of the transmission rod which is close to the hand crank, and the hand crank is inserted into the hexagonal groove.

[0013] As an improved technical solution, the connecting assembly includes a connecting ring disposed between two pipes. The connecting ring has a hole on its side wall that is adapted to a screw. A hollow tube is provided through the middle of the connecting ring, and both ends of the hollow tube are located inside the pipes. Several sealing rings are fitted on the outer walls of both ends of the hollow tube. A ring-shaped reset groove is symmetrically provided inside the connecting ring. A retaining ring is provided in the ring-shaped reset groove. Several third springs are provided on the side of the retaining ring away from the outer wall of the connecting ring. A docking ring is connected to the end of the retaining ring away from the third springs. One end of the docking ring extends and is inserted into a sealing groove opened at the end of the pipe. A sealing ring is connected to the end of the docking ring near the sealing groove.

[0014] As an improved technical solution, the cross-section of the combined structure of the docking ring and the retaining ring is T-shaped, and several of the third springs are arranged in a circumferentially equidistant array.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model, through a fixed anti-detachment mechanism, can drive the worm gear to rotate using a hand crank, which in turn drives the meshing worm ring to rotate, thereby driving several threaded cylinders to rotate, enabling the simultaneous connection and fixation of multiple screws, so as to quickly connect and fix two pipes, facilitating connection, and can use the elastic force of the first spring to squeeze and push the two pipes to fit tightly together, improving their connection and fixing effect.

[0017] 2. The limiting component of this utility model can limit and fix the hollow shaft in the fixing and anti-detachment mechanism, so as to avoid accidental rotation of the worm gear, which would affect the connection and fixing effect of the two pipes. It can also prevent the connection between the screw and the threaded cylinder from loosening, thereby preventing pipe leakage. This makes the pipe connection more stable and solves the problem of leakage caused by loose bolts or screws in the pipe connection. It is more practical.

[0018] 3. This utility model can enhance the sealing of the connection between two pipes and improve its leak-proof effect by using a connecting component. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of a reinforcing device for an LNG pipeline interface according to the present invention.

[0021] Figure 2It is partial section structure schematic view of the reinforcing device of the LNG pipeline butt joint.

[0022] Figure 3 It is partial section structure schematic view of the fixing disc of the reinforcing device of the LNG pipeline butt joint.

[0023] Figure 4 It is connecting structure schematic view of the two baffles of the reinforcing device of the LNG pipeline butt joint.

[0024] Figure 5 It is the connecting structure schematic view of the two baffles of the reinforcing device of the LNG pipeline butt joint. Figure 2 Enlarged structure schematic view of A.

[0025] Figure 6 Enlarged structure schematic view of B. Figure 2 Enlarged structure schematic view of C.

[0026] Figure 7 Enlarged structure schematic view of C. Figure 3 Enlarged structure schematic view of C.

[0027] Mark explanation:

[0028] 1, pipeline;

[0029] 2, fixed anti-off mechanism; 201, fixing disc; 202, turbine ring; 203, threaded cylinder; 204, tooth; 205, installation groove; 206, transmission groove; 207, gear; 208, limiting ring; 209, shell; 210, hollow shaft; 211, worm; 212, hand crank; 213, baffle; 214, plug; 215, screw rod; 216, first spring;

[0030] 3, limiting assembly; 301, fixed cylinder; 302, fixed block; 303, push plate; 304, second spring; 305, clamping groove; 306, guide bar; 307, transmission rod;

[0031] 4, connecting assembly; 401, connecting ring; 402, hollow pipe; 403, butt joint ring;

[0032] 404, baffle ring; 405, third spring. Specific implementation

[0033] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0035] Meanwhile, "and / or" or "and / or" appearing throughout the text means that it includes three schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes.

[0036] In addition, the description of "first", "second" and the like in the present utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present utility model.

[0037] As Figure 1 - Figure 4 and Figure 6 - Figure 7 As shown in the drawings, the embodiment provides a kind of reinforcing device of LNG pipeline butt joint, including symmetrically arranged pipeline 1, connecting assembly 4 is arranged between two pipeline 1, fixed anti-off mechanism 2 is arranged on the outer side of pipeline 1, and limiting assembly 3 is arranged in fixed anti-off mechanism 2;Fixed anti-off mechanism 2 includes fixed disc 201, and the fixed disc 201 is sleeved on the outer side of one side pipeline 1, installation slot 205 is formed in the outer wall of fixed disc 201, turbine ring 202 is rotatably installed in installation slot 205, outer shell 209 is fixedly installed on the side wall of fixed disc 201, hollow shaft 210 is rotatably installed in outer shell 209, hollow shaft 210 is sleeved with worm 211 meshed with turbine ring 202 on the outer side, hand crank 212 is detachably connected to one end of hollow shaft 210, and limiting assembly 3 is arranged at the end of outer shell 209 away from hand crank 212.

[0038] In the example, the fixed anti-off mechanism 2 further comprises a threaded cylinder 203, a plurality of transmission grooves 206 are symmetrically provided in the turbine ring 202 and communicate with the mounting grooves 205, the threaded cylinder 203 is rotatably installed in the transmission grooves 206, and the threaded cylinder 203 penetrates the turbine ring 202, a gear 207 is sleeved on the outside of the threaded cylinder 203, a plurality of teeth 204 are symmetrically provided on the inner wall of the turbine ring 202 and mesh with the gear 207, a threaded rod 215 is threadedly connected to the inner side of the threaded cylinder 203, one end of the threaded rod 215 penetrates the through hole provided in the end of the pipeline 1, the outside of the pipeline 1 away from the side of the fixed disc 201 is symmetrically sleeved with a baffle 213, and the baffle 213 is fixedly connected to one end of the threaded rod 215, a first spring 216 is sleeved on the outside of the threaded rod 215 and close to the side of the fixed disc 201 of the baffle 213, through the arrangement of the fixed anti-off mechanism 2, the hollow shaft 210 can be driven to rotate and drive the meshing turbine ring 202 by rotating the handle 212, the threaded cylinder 203 is threadedly connected with the threaded rod 215, so that a plurality of threaded rods 215 can be connected synchronously, the installation efficiency is improved, and the elasticity of the first spring 216 can act on the pipeline 1, so that the pipeline 1 is subjected to opposite forces, thereby tightly connecting the connection.

[0039] In the example, mounting limit rings 208 are rotatably embedded in the symmetric positions of the inner wall of the mounting grooves 205, and the limit rings 208 are fixedly connected with the turbine ring 202, one end of the baffle 213 is connected with an insertion block 214, and the two baffles 213 are connected by the insertion block 214, so as to limit and fix the turbine ring 202 and guide it, the insertion block 214 can splice the two baffles 213 into a whole or separate them, so as to facilitate installation or disassembly.

[0040] In the example, the limiting assembly 3 comprises a transmission rod 307, and the transmission rod 307 is slidably installed in the hollow shaft 210, the outer wall of the hollow shaft 210 is symmetrically provided with guide strips 306, the inner wall of the hollow shaft 210 is symmetrically provided with guide grooves matched with the guide strips 306, one end of the housing 209 is connected with a fixed cylinder 301 sleeved on the outside of the transmission rod 307, a push plate 303 and a second spring 304 are sleeved on one end of the transmission rod 307 in the fixed cylinder 301, and the push plate 303 is located on the side close to the housing 209, the end of the transmission rod 307 close to the fixed cylinder 301 is symmetrically provided with fixed blocks 302 on the outside, and a plurality of clamping grooves 305 matched with the fixed blocks 302 are symmetrically provided in one end of the fixed cylinder 301, through the limiting assembly 3, the fixed blocks 302 can be clamped into the clamping grooves 305, so as to limit the transmission rod 307, avoid accidental rotation of the transmission rod 307, affect the connection and fixing effect between the pipelines 1, and avoid loosening between the threaded rod 215 and the threaded cylinder 203, so as to cause loosening of the pipelines 1 and leakage of liquefied natural gas, which is more practical.

[0041] In the example, the push plate 303 is rotatably connected with the transmission rod 307 through a bearing, and the transmission rod 307 is provided with a hexagonal groove at one end close to the hand crank 212, and the hand crank 212 is inserted into the hexagonal groove to connect or separate the hand crank 212 and the transmission rod 307, thereby reducing the occupied space.

[0042] As shown in Figure 1 , Figure 2 and Figure 4 together, in the example, the connecting assembly 4 comprises a connecting ring 401, which is arranged between the two pipes 1, and the side wall of the connecting ring 401 is provided with a hole matched with the screw rod 215, and the middle part of the connecting ring 401 is provided with a hollow tube 402 penetrating through the connecting ring 401, and the two ends of the hollow tube 402 are located inside the pipes 1 respectively, and the outer walls of the two ends of the hollow tube 402 are sleeved with a plurality of sealing rings, and the inside of the connecting ring 401 is symmetrically provided with an annular reset slot, and the annular reset slot is provided with a stop ring 404, and the side of the stop ring 404 away from the outer side wall of the connecting ring 401 is provided with a plurality of third springs 405, and the end of the stop ring 404 away from the third springs 405 is connected with a butt joint ring 403, and one end of the butt joint ring 403 extends and is inserted into the sealing groove provided at the end of the pipe 1, and the end of the butt joint ring 403 close to the sealing groove is connected with a sealing ring, and through the connecting assembly 4, the sealing property between the two pipes 1 can be improved, and the risk of leakage can be effectively reduced.

[0043] In the example, the cross section of the combination structure of the butt joint ring 403 and the stop ring 404 is T-shaped, and the third springs 405 are arranged in a circumferential equidistant array, so as to push the butt joint ring 403 to tightly contact the sealing ring and the pipe 1 by the elastic force of the third springs 405, so that the sealing is good.

[0044] In use, two baffles 213 can be sleeved outside one side of the pipe 1, and the two baffles 213 are spliced by the insertion block 214, then the screw rod 215 is connected with the threaded cylinder 203 through the holes on the end flanges of the two pipes 1 and the connecting ring 401, at the same time, the guide bar 306 is driven to slide by the transmission rod 307 pushed by the hand crank 212, the transmission rod 307 drives the push plate 303 to move out of the clamping groove 305, and the transmission rod 307 drives the push plate 303 to press the second spring 304, then the hand crank 212 is rotated to drive the transmission rod 307 to rotate, so that the hollow shaft 210 is driven to rotate, the worm 211 is driven to rotate by the hollow shaft 210, the turbine ring 202 is driven to rotate by the worm 211, the gear 207 is driven to rotate by the turbine ring 202, the threaded cylinder 203 is driven to rotate by the gear 207, the threaded cylinder 203 is gradually connected and fixed with the screw rod 215, so that the screw rod 215 drives the connected baffles 213 to move to the side of the turbine ring 202, the baffles 213 press and push the first spring 216, so that the force generated by the deformation of the first spring 216 acts on the pipe 1, the connection is tightly fitted, the connection effect is improved, and the anti-loose effect is achieved, when the screw rod 215 moves to the appropriate position, the transmission rod 307 is stopped, and the force applied to the transmission rod 307 is gradually released, so that the transmission rod 307 is reset by the second spring 304, the transmission rod 307 is reset by the push plate 303, and the transmission rod 307 is reset by the fixed block 302 clamped in the clamping groove 305, so that the transmission rod 307 is limited and fixed, the hollow shaft 210 is prevented from rotating accidentally, the connection and fixing effect between the two pipes 1 is affected, the anti-loose effect between the two pipes 1 is improved, and the risk of leakage is reduced; while the two pipes 1 are connected and fixed, the hollow pipe 402 is inserted into the pipe 1, the sealing ring is matched to improve the sealing between the hollow pipe 402 and the pipe 1, the abutting ring 403 is driven to move and press the third spring 405, the abutting ring 403 is driven to tightly fit with the inner wall of the sealing groove, the sealing effect is improved, the risk of leakage is reduced, and the utility is more powerful.

[0045] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application, but not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, all of these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A reinforcing device for LNG pipeline butt joints, comprising pipes (1) arranged symmetrically, characterized in that: Connecting assemblies (4) are arranged between two pipes (1), and fixing anti-disengagement mechanisms (2) are arranged outside the pipes (1), and limiting assemblies (3) are arranged in the fixing anti-disengagement mechanisms (2); The fixing anti-disengagement mechanism (2) comprises a fixing disc (201), the fixing disc (201) is arranged outside one side pipe (1), an installation groove (205) is formed in the outer wall of the fixing disc (201), a turbine ring (202) is rotatably arranged in the installation groove (205), an outer shell (209) is fixedly arranged on the side wall of the fixing disc (201), a hollow shaft (210) penetrating through the outer shell (209) is rotatably arranged in the outer shell (209), a worm (211) engaged with the turbine ring (202) is arranged outside the hollow shaft (210), a hand crank (212) is detachably connected to one end of the hollow shaft (210), and the limiting assembly (3) is arranged at the end of the outer shell (209) away from the hand crank (212).

2. A reinforcing device for LNG transfer line butt joints according to claim 1, characterized in that: The fixing anti-disengagement mechanism (2) further comprises a threaded cylinder (203), a plurality of transmission grooves (206) communicating with the installation grooves (205) are symmetrically formed in the inside of the turbine ring (202), the threaded cylinder (203) is rotatably arranged in the transmission grooves (206), and the threaded cylinder (203) penetrates through the turbine ring (202), a gear (207) is arranged outside the threaded cylinder (203), a plurality of gear teeth (204) engaged with the gear (207) are symmetrically arranged on the inner wall of the turbine ring (202), a screw rod (215) is threadedly connected to the inside of the threaded cylinder (203), one end of the screw rod (215) penetrates through the through hole formed in the end of the two pipes (1), a baffle (213) is symmetrically arranged outside the pipe (1) away from the fixing disc (201), and the baffle (213) is fixedly connected to one end of the screw rod (215), and a first spring (216) is arranged outside the screw rod (215) on the side of the baffle (213) close to the fixing disc (201).

3. A reinforcing device for an LNG transfer line butt joint according to claim 2, characterized in that: Limiting rings (208) are rotatably arranged at the symmetric positions of the inner walls of the installation grooves (205), the limiting rings (208) are fixedly connected to the turbine ring (202), one end of the baffle (213) is connected to an insertion block (214), and the two baffles (213) are connected through the insertion block (214).

4. A reinforcement device for an LNG transfer line butt joint according to claim 3, wherein: The limiting assembly (3) comprises a transmission rod (307), the transmission rod (307) is slidingly installed in a hollow shaft (210), the outer wall of the hollow shaft (210) is symmetrically provided with a guide strip (306), the inner wall of the hollow shaft (210) is symmetrically provided with a guide groove matched with the guide strip (306), one end of the shell (209) is connected with a fixed cylinder (301) sleeved outside the transmission rod (307), one end of the transmission rod (307) is sleeved with a push plate (303) and a second spring (304) in the fixed cylinder (301), and the push plate (303) is located on the side close to the shell (209), the outer side of one end of the transmission rod (307) close to the fixed cylinder (301) is symmetrically provided with a fixed block (302), and the fixed cylinder (301) is symmetrically provided with a plurality of clamping grooves (305) matched with the fixed block (302) at one end.

5. A reinforcement device for an LNG transfer line butt joint according to claim 4, characterized in that: The push plate (303) is rotatably connected with the transmission rod (307) through a bearing, and the transmission rod (307) is provided with a hexagonal groove at one end close to the hand crank (212).

6. A reinforcing device for LNG transfer line junctions according to claim 2, characterized in that: The connecting assembly (4) comprises a connecting ring (401), the connecting ring (401) is arranged between the two pipes (1), and the side wall of the connecting ring (401) is provided with a hole matched with the screw rod (215), the connecting ring (401) is provided with a hollow tube (402) penetrating through the connecting ring (401), and the two ends of the hollow tube (402) are located in the inner sides of the pipes (1), respectively, the outer walls of the two ends of the hollow tube (402) are sleeved with a plurality of sealing rings, the inner part of the connecting ring (401) is symmetrically provided with an annular reset groove, the annular reset groove is provided with a stop ring (404), and the side, away from the outer side wall of the connecting ring (401), of the stop ring (404) is provided with a plurality of third springs (405), the end, away from the third spring (405), of the stop ring (404) is connected with a butt joint ring (403), one end of the butt joint ring (403) extends and inserts into the sealing groove arranged at the end of the pipe (1), and the end, close to the sealing groove, of the butt joint ring (403) is connected with a sealing ring.

7. A reinforcing arrangement for an LNG transfer line butt joint according to claim 6, characterised in that: The cross section of the combined structure of the butt joint ring (403) and the stop ring (404) is T-shaped, and a plurality of third springs (405) are arranged in a circumferentially equidistant array.

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