High-temperature-resistant and high-pressure-resistant pipeline expansion joint

Abstract

The utility model relates to the technical field of pipeline expansion joints, and discloses a pipeline expansion joint resistant to high temperature and high pressure, which solves the problem that the pipeline expansion joint is inconvenient to quickly install at present, and comprises a corrugated pipe, outer rings are fixedly installed on the outer side of the corrugated pipe close to the two ends, and a plurality of adjusting rods are arranged between the two outer rings at equal angles. A connecting pipe is arranged on the outer side of the corrugated pipe, a mounting mechanism and a limiting mechanism are arranged between the connecting pipe and the outer ring, the mounting mechanism comprises a side pipe fixed to the side, close to the connecting pipe, of the outer ring, and the connecting pipe is sleeved with the side pipe; according to the corrugated pipe, through the cooperation between the side blocks and the inserting grooves and the cooperation between the fixed ring and the movable ring, the two side blocks can conveniently slide into the two arc-shaped grooves respectively, then the connecting pipe and the side pipe can be connected, the corrugated pipe can be conveniently and rapidly installed, and through the cooperation between the positioning column and the inner ring and the cooperation between the sealing ring and the connecting pipe, the sealing effect is good. Therefore, the sealing performance between the connecting pipe and the side pipe can be guaranteed conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline expansion joints, in particular to a pipeline expansion joint resistant to high temperature and high pressure. Background Art

[0002] Pipe expansion joints are also called expansion joints, expansion joints, and compensators. Pipe expansion joints can be axially expanded and contracted within a certain range, and can also overcome the offset caused by different axial connections of pipes within a certain angle. They can greatly facilitate the installation and removal of valves and pipes. They can be freely expanded and contracted within the allowable expansion amount of the pipe. Once the maximum expansion amount is exceeded, they act as a limit to ensure the safe operation of the pipeline. This is mainly to ensure the safe operation of the pipeline.

[0003] Most existing pipeline expansion joints are connected to pipelines through flanges, so multiple bolts and nuts need to be operated, which makes it inconvenient to quickly install the pipeline expansion joint. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high temperature and high pressure resistant pipeline expansion joint, which effectively solves the current problem of inconvenience in rapid installation of pipeline expansion joints.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high temperature and high pressure resistant pipeline expansion joint, comprising a bellows, outer rings are fixedly installed near both ends of the outer side of the bellows, a plurality of adjustment rods are arranged at equal angles between the two outer rings, a connecting pipe is arranged on the outer side of the bellows, and an installation mechanism and a limiting mechanism are arranged between the connecting pipe and the outer ring;

[0006] The mounting mechanism includes a side tube fixed to a side of the outer ring close to the connecting tube, the side tube is sleeved on the outer side of the connecting tube, a fixed ring is fixedly mounted on the outer side of the connecting tube, an annular groove is arranged on the outer side of the fixed ring, a movable ring is arranged on the outer side of the connecting tube, the movable ring is rotatably connected to the fixed ring through the annular groove, two side blocks are symmetrically fixedly mounted on the outer side of the movable ring, two slots are symmetrically arranged on the side of the side tube away from the outer ring, the two slots are matched with the two side blocks, two arc grooves are symmetrically arranged on the side tube, the two arc grooves are respectively connected with the two slots, and the two side blocks slide into the two arc grooves respectively.

[0007] Preferably, an inner ring is fixedly installed in the side tube, a sealing ring is fixedly installed on the side of the inner ring close to the connecting tube, one end of the connecting tube close to the outer ring is fitted with the sealing ring, and two positioning columns are symmetrically fixedly installed on the end of the connecting tube close to the outer ring, and both positioning columns pass through the inner ring.

[0008] Preferably, the limiting mechanism comprises a sleeve plate fixed to the outer side of the side tube, and two abutment columns are fixedly connected to one side of the sleeve plate away from the outer ring, and the two side blocks abut against the two abutment columns respectively.

[0009] Preferably, a screw is rotatably connected to the side of the sleeve away from the outer ring, and a turntable is fixedly connected to the end of the screw away from the sleeve. A screw sleeve is threadedly sleeved on the outer side of the screw, and two limit rods are symmetrically fixedly connected to the side of the screw sleeve away from the turntable. Both limit rods pass through the sleeve and are movably connected to the sleeve.

[0010] Preferably, two abutment plates are symmetrically fixedly connected to the outer side of the screw sleeve, and the two abutment plates abut against one side of the two side blocks away from the sleeve plate respectively.

[0011] Preferably, the two abutment plates are fixedly connected to one side close to the sleeve plate with an insertion rod, the two insertion rods respectively penetrate the two side blocks, and the sleeve plate is symmetrically fixedly connected to one side away from the outer ring with two limiting cylinders, the two insertion rods are respectively inserted into the two limiting cylinders.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model facilitates the two side blocks to slide into the two arc-shaped grooves respectively through the cooperation between the side blocks and the slots and between the fixed ring and the movable ring, and then the connecting pipe can be connected to the side pipe, thereby facilitating the rapid installation of the corrugated pipe, and facilitates the sealing between the connecting pipe and the side pipe through the cooperation between the positioning column and the inner ring and the sealing ring and the connecting pipe;

[0014] (2) The new type of device cooperates between the screw rod and the screw sleeve, and between the limit rod and the sleeve plate. When the turntable rotates, the screw sleeve drives the two abutment plates to move and abut against the two side blocks respectively, so that the two insertion rods can pass through the two side blocks respectively, so that the two insertion rods can be inserted into the two limit tubes respectively, and then the two side blocks can be limited, thereby facilitating the firm connection between the side pipe and the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of a high temperature and high pressure resistant pipeline expansion joint of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation mechanism structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the side pipe and the connecting pipe of the utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the side block and the movable ring of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the limiting mechanism of the utility model.

[0022] In the figure: 1. bellows; 2. mounting mechanism; 201. side tube; 202. side block; 203. slot; 204. arc groove; 205. sealing ring; 206. inner ring; 207. fixing ring; 208. positioning column; 209. movable ring; 2010. annular groove; 3. limiting mechanism; 301. sleeve; 302. screw sleeve; 303. turntable; 304. screw; 305. abutment plate; 306. abutment column; 307. limiting cylinder; 308. insertion rod; 309. limiting rod; 4. connecting pipe; 5. adjusting rod; 6. outer ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Embodiment 1, by Figure 1 The utility model includes a bellows 1, a resistance layer is provided on the outside of the bellows 1, a reinforcement layer is provided on the outside of the resistance layer, the resistance layer is made of polyimide material, which is convenient for improving the high temperature resistance of the pipeline expansion joint, improving the comprehensive performance of the pipeline expansion joint and making it more practical, the reinforcement layer is made of polyvinyl alcohol acetal material, which is convenient for improving the toughness of the pipeline expansion joint, making the pipeline expansion joint less likely to be damaged by external force, and improving the overall strength of the pipeline expansion joint, outer rings 6 are fixedly installed on the outside of the bellows 1 near both ends, a plurality of adjustment rods 5 are provided at equal angles between the two outer rings 6, a connecting pipe 4 is provided on the outside of the bellows 1, and an installation mechanism 2 and a limiting mechanism 3 are provided between the connecting pipe 4 and the outer ring 6.

[0025] Specifically, by Figure 2-4The mounting mechanism 2 includes a side tube 201 fixed to the side of the outer ring 6 close to the connecting tube 4, the side tube 201 is sleeved on the outside of the connecting tube 4, a fixing ring 207 is fixedly installed on the outside of the connecting tube 4, an annular groove 2010 is arranged on the outside of the fixing ring 207, a movable ring 209 is arranged on the outside of the connecting tube 4, the movable ring 209 is rotatably connected to the fixing ring 207 through the annular groove 2010, two side blocks 202 are symmetrically fixedly installed on the outside of the movable ring 209, and two slots 203 are symmetrically arranged on the side of the side tube 201 away from the outer ring 6, and both slots 203 are Matching with the two side blocks 202, two arc grooves 204 are symmetrically arranged on the side tube 201, the two arc grooves 204 are respectively communicated with the two slots 203, and the two side blocks 202 slide into the two arc grooves 204 respectively, an inner ring 206 is fixedly installed in the side tube 201, a sealing ring 205 is fixedly installed on the side of the inner ring 206 close to the connecting tube 4, one end of the connecting tube 4 close to the outer ring 6 is fitted with the sealing ring 205, and two positioning columns 208 are symmetrically fixedly installed on one end of the connecting tube 4 close to the outer ring 6, and the two positioning columns 208 both penetrate the inner ring 206;

[0026] When in use, first put the connecting tube 4 into the side tube 201, so that the two side blocks 202 are respectively inserted into the two slots 203, and the two positioning columns 208 are both passed through the inner ring 206 until one end of the connecting tube 4 fits with the sealing ring 205 to ensure the sealing between the connecting tube 4 and the side tube 201. Since the movable ring 209 is rotatably connected to the fixed ring 207 through the annular groove 2010, and then the two side blocks 202 are rotated, so that the two side blocks 202 slide into the two arc grooves 204 respectively, the connecting tube 4 is connected to the side tube 201, and finally the corrugated tube 1 is quickly installed.

[0027] Specifically, by Figure 5 The limiting mechanism 3 includes a sleeve plate 301 fixed to the outside of the side tube 201, and the side of the sleeve plate 301 away from the outer ring 6 is fixedly connected with two abutment columns 306, and the two side blocks 202 are respectively abutted with the two abutment columns 306, and the side of the sleeve plate 301 away from the outer ring 6 is rotatably connected with a screw rod 304, and the end of the screw 304 away from the sleeve plate 301 is fixedly connected with a turntable 303, and the outer side of the screw rod 304 is threadedly sleeved with a screw sleeve 302, and the side of the screw sleeve 302 away from the turntable 303 is symmetrically fixedly connected with two limiting rods 309, and the two limiting rods 309 are symmetrically fixedly connected with the two limiting rods 309. The positioning rods 309 all penetrate the sleeve plate 301 and are movably connected to the sleeve plate 301. Two abutment plates 305 are symmetrically fixedly connected to the outer side of the screw sleeve 302. The two abutment plates 305 are respectively abutted with the side of the two side blocks 202 away from the sleeve plate 301. The two abutment plates 305 are fixedly connected with the insertion rods 308 on the side close to the sleeve plate 301. The two insertion rods 308 respectively penetrate the two side blocks 202. Two limiting cylinders 307 are symmetrically fixedly connected to the side of the sleeve plate 301 away from the outer ring 6. The two insertion rods 308 are respectively inserted into the two limiting cylinders 307;

[0028] When in use, first, when the two side blocks 202 are rotated to abut against the two abutment columns 306 respectively, then the turntable 303 is rotated to drive the screw 304 to rotate, and with the cooperation between the limiting rod 309 and the sleeve plate 301, the screw sleeve 302 is driven to move, and the two abutment plates 305 are driven to move until they abut against the two side blocks 202 respectively. At the same time, the two insertion rods 308 respectively penetrate the two side blocks 202 and are respectively inserted into the two limiting cylinders 307 to limit the two side blocks 202. Finally, a firm connection between the connecting pipe 4 and the side pipe 201 is achieved to ensure the stability of the corrugated pipe 1 during installation.

Claims

1. A high temperature and high pressure resistant pipeline expansion joint, comprising a bellows (1), characterized in that: An outer ring (6) is fixedly mounted near both ends of the outer side of the bellows (1), a plurality of adjustment rods (5) are arranged at equal angles between the two outer rings (6), a connecting pipe (4) is arranged on the outer side of the bellows (1), and a mounting mechanism (2) and a limiting mechanism (3) are arranged between the connecting pipe (4) and the outer ring (6); The mounting mechanism (2) comprises a side tube (201) fixed to a side of the outer ring (6) close to the connecting tube (4); the side tube (201) is sleeved on the outer side of the connecting tube (4); a fixing ring (207) is fixedly mounted on the outer side of the connecting tube (4); an annular groove (2010) is provided on the outer side of the fixing ring (207); a movable ring (209) is provided on the outer side of the connecting tube (4); the movable ring (209) is rotatably connected to the fixing ring (207) via the annular groove (2010); Two side blocks (202) are symmetrically fixedly installed on the outer side of the moving ring (209); two slots (203) are symmetrically arranged on the side of the side tube (201) away from the outer ring (6); the two slots (203) are both adapted to the two side blocks (202); two arc grooves (204) are symmetrically arranged on the side tube (201); the two arc grooves (204) are respectively connected to the two slots (203), and the two side blocks (202) slide into the two arc grooves (204) respectively.

2. A high temperature and high pressure resistant pipeline expansion joint according to claim 1, characterized in that: An inner ring (206) is fixedly installed inside the side tube (201); a sealing ring (205) is fixedly installed on a side of the inner ring (206) close to the connecting tube (4); an end of the connecting tube (4) close to the outer ring (6) is in contact with the sealing ring (205); and two positioning columns (208) are symmetrically fixedly installed on an end of the connecting tube (4) close to the outer ring (6); the two positioning columns (208) both penetrate the inner ring (206).

3. The high temperature and high pressure resistant pipeline expansion joint according to claim 1, characterized in that: The limiting mechanism (3) comprises a sleeve plate (301) fixed to the outside of the side tube (201); two abutment columns (306) are fixedly connected to the side of the sleeve plate (301) away from the outer ring (6); and the two side blocks (202) abut against the two abutment columns (306) respectively.

4. A high temperature and high pressure resistant pipeline expansion joint according to claim 3, characterized in that: A screw rod (304) is rotatably connected to one side of the sleeve plate (301) away from the outer ring (6); one end of the screw rod (304) away from the sleeve plate (301) is fixedly connected to a rotating disk (303); a screw sleeve (302) is threadedly sleeved on the outer side of the screw rod (304); two limit rods (309) are symmetrically fixedly connected to one side of the screw sleeve (302) away from the rotating disk (303); both limit rods (309) penetrate the sleeve plate (301) and are movably connected to the sleeve plate (301).

5. A high temperature and high pressure resistant pipeline expansion joint according to claim 4, characterized in that: Two abutment plates (305) are symmetrically fixedly connected to the outer side of the screw sleeve (302), and the two abutment plates (305) respectively abut against one side of the two side blocks (202) away from the sleeve plate (301).

6. A high temperature and high pressure resistant pipeline expansion joint according to claim 5, characterized in that: The two abutment plates (305) are fixedly connected to the side close to the sleeve plate (301) with an insertion rod (308), and the two insertion rods (308) respectively penetrate the two side blocks (202). The side of the sleeve plate (301) away from the outer ring (6) is symmetrically fixedly connected to two limiting cylinders (307), and the two insertion rods (308) are respectively inserted into the two limiting cylinders (307).

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