Connecting pipe component for interconnection of multiple groups of turbo expanders

Abstract

The utility model discloses a connecting pipe component for interconnection of multiple groups of turbo expanders, which belongs to the technical field of turbo expanders and comprises a first connecting pipe and a second connecting pipe, and rotating components for connection are mounted at two ends of the first connecting pipe and two ends of the second connecting pipe. A connecting assembly is installed between the first connecting pipe and the second connecting pipe, four lock catch assemblies arranged circumferentially are installed on the outer side of the connecting assembly, and the first connecting pipe and the second connecting pipe are spliced through a first connecting ring and a second connecting ring. Then the first connecting ring and the second connecting ring are locked and fixed in multiple directions by utilizing four groups of lock catch assemblies, so that the problems that the splicing and mounting stability of the connecting pipes is reduced, bolts are easy to loosen, the joint of the two connecting pipes is loosened or separated, a gap exists at the splicing part of the connecting pipes, the splicing and contact sealing performance of the connecting pipes is reduced, and the service life of the connecting pipes is prolonged are solved. And the problem that the damaged connecting pipe is inconvenient to disassemble, assemble and replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine expanders, in particular to a connecting pipe component used for interconnecting multiple groups of turbine expanders. Background Art

[0002] The turbo expander is a key component necessary for obtaining cold energy in air separation equipment, natural gas liquefaction separation equipment, and low-temperature crushing equipment. It is the heart that ensures the stable operation of the entire equipment. Its main principle is to use a certain pressure of gas to perform adiabatic expansion in the turbo expander to do external work and consume the internal energy of the gas itself, so that the gas itself is strongly cooled to achieve the purpose of refrigeration. Most of the existing connecting pipes for interconnecting multiple groups of turbo expanders are integrated, and the stability of splicing installation is low. It is not easy to replace the connecting pipe after it is damaged.

[0003] When multiple existing connecting pipes are spliced ​​and installed, they are usually installed using a bolt structure, which reduces the stability of the splicing and installation of the connecting pipes. The bolts are prone to loosening, causing the connection between the two connecting pipes to loosen or detach, resulting in gaps at the splicing of the connecting pipes, reducing the sealing of the splicing contact of the connecting pipes, and making it inconvenient to disassemble and replace damaged connecting pipes. Therefore, those skilled in the art provide a connecting pipe component for interconnecting multiple groups of turbine expanders to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a connecting pipe component for interconnecting multiple groups of turbine expanders to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a connecting pipe component for interconnecting multiple groups of turbine expanders, comprising a first connecting pipe and a second connecting pipe, both ends of the first connecting pipe and the second connecting pipe are equipped with a rotating assembly for connection, a connecting assembly is installed between the first connecting pipe and the second connecting pipe, and four groups of locking assemblies arranged circumferentially are installed on the outer side of the connecting assembly;

[0006] The connecting assembly includes a first connecting ring installed on one end of a first connecting tube, a second connecting ring installed on one end of the second connecting tube, a plurality of circumferentially arranged fixing grooves are respectively opened on the fitting surfaces of the first connecting ring and the second connecting ring, a plurality of circumferentially arranged fixing blocks are respectively connected to the fitting surfaces of the first connecting ring and the second connecting ring, the fixing blocks correspond to the fixing grooves one by one, the first connecting ring and the first connecting tube are hot-melt connected, and the second connecting ring and the second connecting tube are hot-melt connected.

[0007] Preferably: the locking assembly includes four mounting blocks arranged circumferentially and connected to the outer side surfaces of the first connecting ring and the second connecting ring respectively, the bottom of the mounting block on the outer side surface of the first connecting ring is connected to a locking plate, and the top of the mounting block on the outer side surface of the second connecting ring is provided with a movable groove.

[0008] Preferably: the locking assembly also includes an installation groove opened on the other side of the movable groove, a pull rod for driving passes through one side of the installation groove, a spring for pushing is provided on the outside of the pull rod, one end of the pull rod is connected to a connecting plate, one side of the connecting plate is connected to a locking block, a locking groove is provided on the outer side of the locking plate, the pull rod is slidably connected to the installation block, the pull rod is fixedly connected to the connecting plate, the cross-sections of the locking block and the locking groove are both right-angled triangles, and the cross-section of the connecting plate is Z-shaped.

[0009] Preferably: the rotating assembly includes a fixing ring which is heat-fused to the other end of the first connecting tube and the second connecting tube respectively, a connecting bearing is sleeved on the outer side of the fixing ring, a bearing seat is connected to the outer side of the bottom of the connecting bearing, a flange is connected to the outer side of the bearing seat, the fixing ring is rotatably connected to the bearing seat through the connecting bearing, and the bearing seat is fixedly connected to the flange.

[0010] Preferably: a limiting groove is provided at the bottom of the first connecting ring, a limiting ring is provided at the top of the second connecting ring, and the limiting ring is movably connected to the limiting groove.

[0011] Preferably: a first sealing ring is connected to an inner side of the first connecting ring, a second sealing ring is connected to an inner side of the second connecting ring, the first sealing ring has a concave cross-section, and the second sealing ring has a convex cross-section.

[0012] Preferably: a sliding portion for pushing is provided on the other side of the bottom of the locking plate, and the cross-section of the sliding portion is arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by setting the first connecting ring and the second connecting ring, the rotating assembly at the other end of the first connecting tube and the second connecting tube can facilitate the rotation of the first connecting tube and the second connecting tube, thereby preventing the first connecting tube and the second connecting tube from being twisted and damaged due to the force rotation. The first connecting tube and the second connecting tube are spliced ​​by the first connecting ring and the second connecting ring, and then four sets of locking assemblies are used to lock and fix the first connecting ring and the second connecting ring in multiple directions. When the first connecting ring and the second connecting ring are fitted together, the fixing block is embedded in the fixing groove, thereby increasing the contact area between the first connecting ring and the second connecting ring.

[0015] 2. In the utility model, by setting a mounting block, a spring and a connecting plate, when the first connecting ring and the second connecting ring are spliced, the locking plate at the bottom of the mounting block is inserted into the movable groove at the top of the lower mounting block, and then the spring in the mounting groove can squeeze the connecting plate, so that the connecting plate drives the locking block to be inserted into the locking groove on one side of the locking plate, and the pull rod can be used to drive the locking block on one side of the connecting plate to be separated from the locking groove, thereby improving the stability of the locking assembly in splicing and installing the first connecting ring and the second connecting ring, and also facilitating the disassembly and replacement of the first connecting tube and the second connecting tube.

[0016] 3. In the utility model, by setting a fixing ring, a connecting bearing and a flange, the first connecting pipe and the second connecting pipe are connected and installed through the fixing ring, the fixing ring is rotatably connected to the bearing seat through the connecting bearing, and the flanges on the outer side of the bearing seat are fixed to the turbine expander through external fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0019] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 The overall structure of the utility model Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 It is a schematic structural diagram of the first connecting ring, the second connecting ring, the fixing groove and the fixing block of the overall structure of the utility model.

[0022] In the figure: 1. first connecting tube; 2. second connecting tube; 3. first connecting ring; 4. second connecting ring; 5. fixing groove; 6. fixing block; 7. mounting block; 8. locking plate; 9. movable groove; 10. mounting groove; 11. pull rod; 12. spring; 13. connecting plate; 14. locking block; 15. locking groove; 16. fixing ring; 17. connecting bearing; 18. bearing seat; 19. flange; 20. limiting groove; 21. limiting ring; 22. first sealing ring; 23. second sealing ring; 24. sliding part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 to Figure 5 In an embodiment of the utility model, a connecting pipe component for interconnecting multiple groups of turbine expanders includes a first connecting pipe 1 and a second connecting pipe 2, both ends of the first connecting pipe 1 and the second connecting pipe 2 are equipped with rotating components for connection, a connecting component is installed between the first connecting pipe 1 and the second connecting pipe 2, and four groups of locking components arranged circumferentially are installed on the outer side of the connecting component, the connecting component includes a first connecting ring 3 installed at one end of the first connecting pipe 1, and a second connecting ring 4 is installed at one end of the second connecting pipe 2, and the first connecting ring 3 and the second connecting ring 4 are respectively provided with a plurality of circumferentially arranged fixing grooves 5 on the fitting surfaces, and the first connecting ring 3 and the second connecting ring 4 are respectively connected with a plurality of circumferentially arranged fixing blocks 6 on the fitting surfaces.

[0025] When in use, the fixing block 6 is embedded in the fixing groove 5 when the first connecting ring 3 and the second connecting ring 4 are fitted together, thereby increasing the contact area of ​​the first connecting ring 3 and the second connecting ring 4. The rotating assembly at the other end of the first connecting tube 1 and the second connecting tube 2 can facilitate the rotation of the first connecting tube 1 and the second connecting tube 2, thereby preventing the first connecting tube 1 and the second connecting tube 2 from being twisted and damaged due to force rotation. The first connecting tube 1 and the second connecting tube 2 are spliced ​​by the first connecting ring 3 and the second connecting ring 4, and then four sets of locking assemblies are used to lock and fix the first connecting ring 3 and the second connecting ring 4 in multiple directions.

[0026] In one embodiment, specifically, the locking assembly includes four mounting blocks 7 which are respectively connected to the outer side surfaces of the first connecting ring 3 and the second connecting ring 4 and are arranged in a circle. The bottom of the mounting block 7 on the outer side surface of the first connecting ring 3 is connected to a locking plate 8, and the top of the mounting block 7 on the outer side surface of the second connecting ring 4 is provided with a movable groove 9. The locking assembly also includes a mounting groove 10 provided on the other side of the movable groove 9. A pull rod 11 for driving passes through one side of the mounting groove 10, and a spring 12 for pushing is provided on the outer side of the pull rod 11. A connecting plate 13 is connected to one end of the pull rod 11, and a locking block 14 is connected to one side of the connecting plate 13. A locking groove 15 is provided on the outer side of the locking plate 8. The pull rod 11 is slidably connected to the mounting block 7, and the pull rod 11 is fixedly connected to the connecting plate 13. The cross-sections of the locking block 14 and the locking groove 15 are both right-angled triangles, and the cross-section of the connecting plate 13 is Z-shaped.

[0027] Among them, when the first connecting ring 3 and the second connecting ring 4 are spliced, the locking plate 8 at the bottom of the mounting block 7 is inserted into the movable groove 9 at the top of the lower mounting block 7, and then the spring 12 in the mounting groove 10 can squeeze the connecting plate 13, so that the connecting plate 13 drives the locking block 14 to be inserted into the locking groove 15 on one side of the locking plate 8. The pull rod 11 can be used to drive the locking block 14 on one side of the connecting plate 13 to disengage from the locking groove 15, thereby improving the stability of the locking assembly in splicing and installing the first connecting ring 3 and the second connecting ring 4, and also facilitating the disassembly and replacement of the first connecting tube 1 and the second connecting tube 2.

[0028] Furthermore, the rotating assembly includes a fixing ring 16 which is heat-fused to the other end of the first connecting pipe 1 and the second connecting pipe 2 respectively, a connecting bearing 17 is sleeved on the outer side of the fixing ring 16, a bearing seat 18 is connected to the outer side of the bottom of the connecting bearing 17, a flange 19 is connected to the outer side of the bearing seat 18, the first connecting pipe 1 and the second connecting pipe 2 are connected and installed through the fixing ring 16, the fixing ring 16 is rotatably connected to the bearing seat 18 through the connecting bearing 17, and the flange 19 on the outer side of the bearing seat 18 is fixed to the turbine expander through external fasteners.

[0029] In one embodiment, specifically, a limiting groove 20 is provided at the bottom of the first connecting ring 3, and a limiting ring 21 is provided at the top of the second connecting ring 4. The limiting ring 21 is movably connected to the limiting groove 20. The limiting ring 21 is embedded in the limiting groove 20 to increase the contact area between the first connecting ring 3 and the second connecting ring 4. At the same time, the limiting ring 21 can also seal the joint of the first connecting ring 3 and the second connecting ring 4.

[0030] Among them, a first sealing ring 22 is connected to the inner side of the first connecting ring 3, and a second sealing ring 23 is connected to the inner side of the second connecting ring 4. The cross-section of the first sealing ring 22 is a "concave" shape, and the cross-section of the second sealing ring 23 is a "convex" shape. The first sealing ring 22 and the second sealing ring 23 are embedded when they are tightly attached to improve the sealing between the first connecting ring 3 and the second connecting ring 4.

[0031] In one embodiment, specifically, a sliding portion 24 for pushing is provided on the other side of the bottom of the locking plate 8, and the sliding portion 24 has an arc-shaped cross-section. When the locking plate 8 is inserted into the movable groove 9, the sliding portion 24 squeezes and pushes the locking block 14, and the locking block 14 is away from the movable groove 9 to facilitate the locking plate 8 to be inserted into the movable groove 9 for splicing and installation.

[0032] The working principle of this utility model:

[0033] First, the first connecting pipe 1 and the second connecting pipe 2 are spliced ​​through the first connecting ring 3 and the second connecting ring 4. At this time, the fixing block 6 is embedded in the fixing groove 5, and the limiting ring 21 enters the limiting groove 20. At this time, the first sealing ring 22 and the second sealing ring 23 are embedded, and then the locking plate 8 at the bottom of the mounting block 7 is inserted into the movable groove 9 at the top of the lower mounting block 7. At this time, the sliding part 24 at the bottom of the locking plate 8 squeezes and pushes the locking block 14, and then the locking block 14 moves away from the movable groove 9, and then the spring 12 in the mounting groove 10 squeezes the connecting plate 13, so that the connecting plate 13 drives the locking block 14 to insert into the locking groove 15 on one side of the locking plate 8, so that the four locking blocks 14 are installed and fixed to the first connecting ring 3 and the second connecting ring 4 through the locking plate 8, and then the other ends of the first connecting pipe 1 and the second connecting pipe 2 are connected and installed through the fixing ring 16. At this time, the fixing ring 16 is rotatably connected to the bearing seat 18 through the connecting bearing 17, and is fixed to the turbine expander through the flange 19 on the outer side of the bearing seat 18 using an external fastener.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A connecting pipe component for interconnecting multiple groups of turbine expanders, comprising a first connecting pipe (1) and a second connecting pipe (2), characterized in that: Both ends of the first connecting tube (1) and the second connecting tube (2) are equipped with a rotating assembly for connection, a connecting assembly is installed between the first connecting tube (1) and the second connecting tube (2), and four groups of locking assemblies arranged in a circumference are installed on the outer side of the connecting assembly; The connection assembly comprises a first connection ring (3) installed at one end of a first connection tube (1), a second connection ring (4) installed at one end of the second connection tube (2), a plurality of circumferentially arranged fixing grooves (5) are respectively provided on the fitting surfaces of the first connection ring (3) and the second connection ring (4), a plurality of circumferentially arranged fixing blocks (6) are respectively connected to the fitting surfaces of the first connection ring (3) and the second connection ring (4), the fixing blocks (6) correspond one to one with the fixing grooves (5), the first connection ring (3) and the first connection tube (1) are connected by hot melt, and the second connection ring (4) and the second connection tube (2) are connected by hot melt.

2. A connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 1, characterized in that: The locking assembly comprises four mounting blocks (7) which are respectively connected to the outer side surfaces of the first connecting ring (3) and the second connecting ring (4) and are arranged in a circumferential manner; a locking plate (8) is connected to the bottom of the mounting block (7) on the outer side surface of the first connecting ring (3); and a movable groove (9) is provided at the top of the mounting block (7) on the outer side surface of the second connecting ring (4).

3. A connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 2, characterized in that: The locking assembly also includes a mounting groove (10) provided on the other side of the movable groove (9), a pull rod (11) for driving is passed through one side of the mounting groove (10), a spring (12) for pushing is provided on the outer side of the pull rod (11), one end of the pull rod (11) is connected to a connecting plate (13), one side of the connecting plate (13) is connected to a locking block (14), a locking groove (15) is provided on the outer side of the locking plate (8), the pull rod (11) is slidably connected to the mounting block (7), the pull rod (11) is fixedly connected to the connecting plate (13), the cross-sections of the locking block (14) and the locking groove (15) are both right triangles, and the cross-section of the connecting plate (13) is Z-shaped.

4. A connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 1, characterized in that: The rotating assembly comprises a fixing ring (16) which is heat-fused to the other end of the first connecting tube (1) and the other end of the second connecting tube (2), respectively; a connecting bearing (17) is sleeved on the outer side of the fixing ring (16); a bearing seat (18) is connected to the outer side of the bottom of the connecting bearing (17); a flange (19) is connected to the outer side of the bearing seat (18); the fixing ring (16) is rotatably connected to the bearing seat (18) via the connecting bearing (17); and the bearing seat (18) is fixedly connected to the flange (19).

5. The connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 1, characterized in that: A limiting groove (20) is provided at the bottom of the first connecting ring (3), and a limiting ring (21) is provided at the top of the second connecting ring (4), and the limiting ring (21) is movably connected to the limiting groove (20).

6. A connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 1, characterized in that: The first connecting ring (3) is connected to a first sealing ring (22) on its inner side, and the second connecting ring (4) is connected to a second sealing ring (23) on its inner side; the first sealing ring (22) has a concave cross-section, and the second sealing ring (23) has a convex cross-section.

7. A connecting pipe component for interconnecting multiple groups of turbine expanders according to claim 2, characterized in that: A sliding portion (24) for pushing is provided on the other side of the bottom of the locking plate (8), and the sliding portion (24) has an arc-shaped cross section.

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