Elastic compensation system for oil cooling pipeline of steam turbine of steamship

Abstract

The invention relates to the technical field of pipeline compensators, and discloses an elastic compensation system of an oil cooling pipeline of a steamship steam turbine, which solves the problems that although the pipeline compensator is convenient to disassemble and assemble, the sealing performance of the installation joint of the pipeline compensator is poor, oil leakage is easily caused, the environment is polluted and resource waste is caused, and comprises a hard pipe, corrugated telescopic pipes are fixedly installed on the two sides of the hard pipe correspondingly, butt joints are fixedly installed on the sides, away from each other, of the two corrugated telescopic pipes correspondingly, connecting pipes are inserted into the two butt joints correspondingly, abutting discs are fixedly installed on the surfaces of the two connecting pipes correspondingly, and four clamping heads are annularly arranged on the surfaces of the two abutting discs correspondingly at equal intervals. The surfaces of the two butt joints are sleeved with threaded sleeves. While the pipeline compensator is convenient to disassemble and assemble, the sealing performance of the installation joint of the pipeline compensator can be effectively improved, environmental pollution caused by oil leakage and resource waste are avoided, stable pressure and flow of an oil cooling system are guaranteed, and the operation efficiency of a steam turbine is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline compensators, in particular to an elastic compensation system for an oil cooling pipeline of a steam turbine of a ship. Background Art

[0002] The elastic compensation system for ship steam turbine oil cooling pipes is designed to absorb deformation caused by thermal expansion and contraction, vibration, or mechanical displacement. It typically consists of an elastic compensator, fixed and guide brackets, seals, and connectors. Through elastic deformation, it absorbs axial, lateral, and angular displacement of the pipes, protecting the pipes and equipment, ensuring stable oil circulation, and improving system safety. Its primary application is in ship steam turbine systems, where it ensures the reliable operation of oil cooling pipes under high temperatures, high vibration, and complex sea conditions. Furthermore, the system plays a key role in nuclear-powered vessels and ships operating in extreme conditions (such as icebreakers and deep-sea research vessels), which place stringent requirements on piping systems, ensuring stable operation of equipment under extreme conditions. The existing patent (publication number: CN218208375U) discloses a metal bellows compensator for a flange-connected steel pipe. The compensator facilitates the installation and removal of the metal bellows compensator on the steel pipe, reducing the difficulty of the work and shortening the replacement time of the metal bellows compensator, thereby reducing the gas outage time of the gas pipeline. However, although the compensator is easy to install and disassemble, the sealing performance of its installation connection is poor, which can easily lead to oil leakage, polluting the environment and causing waste of resources. It also affects the pressure and flow stability of the oil cooling system, reduces the operating efficiency of the turbine, and long-term leakage may also cause equipment failure, increase maintenance costs, and endanger the safety of ship navigation. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an elastic compensation system for the oil cooling pipe of a ship turbine, which effectively solves the problem that the existing pipeline compensator in the above background technology is easy to disassemble and assemble, but the sealing of its installation connection is poor, which easily leads to oil leakage, environmental pollution and waste of resources.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an elastic compensation system for a steam turbine oil cooling pipeline of a ship, comprising a rigid pipe, wherein a corrugated expansion pipe is fixedly installed on both sides of the rigid pipe, a butt joint is fixedly installed on the side of the two corrugated expansion pipes away from each other, a connecting pipe is inserted into the interior of the two butt joints, a tightening disc is fixedly installed on the surface of the two connecting pipes, four clamping heads are respectively provided at equal intervals in an annular manner on the surface of the two tightening discs, a threaded sleeve is sleeved on the surface of the two butt joints, a plurality of ribs are fixedly installed on the surface of the two threaded sleeves at equal intervals in an annular manner, the two threaded sleeves are threadedly connected to the two butt joints via external threads provided on the surfaces of the two butt joints, and a circular groove is provided on one side of the interior of the two butt joints; The inner walls of the two butt joints are fixedly installed with expansion sealing rings, and the insides of the two ring grooves are fixedly installed with airbag rings. Four air nozzles are fixedly installed at equal distances in a circle on the side where the two airbag rings are close to each other. One end of the air nozzle is fixedly connected to the circumferential surface of the expansion sealing ring through the air pipe. The circumferential surfaces of the two airbag rings are respectively provided with four pressure hoops at equal distances in a circle. A transmission assembly is provided on one side of the two threaded sleeves, and the transmission assembly is connected to the eight clamping heads and the eight pressure hoops. When the two threaded sleeves rotate and move, power is output to the eight clamping heads and the eight pressure hoops through the transmission assembly, so that the eight clamping heads fix the two butt joints by pressing the two clamping plates, and the eight pressure hoops squeeze the two airbag rings to inflate the inside of the two expansion sealing rings.

[0005] Preferably, a fixing ring is fixedly installed on the surface of the rigid tube, and four connecting blocks are fixedly installed on the circumferential surface of the fixing ring at equal intervals. A limiting rod is fixedly installed in the middle of the connecting block, and both ends of the surface of the four limiting rods are provided with limiting sleeves, and one side of the limiting sleeve is fixedly connected to the two docking joints through a support rod.

[0006] Preferably, four positioning rods are fixedly installed on the sides of the two abutting plates that are close to each other, and positioning holes are opened on the sides of the two docking joints that are away from each other, and the positioning rods are inserted into the positioning holes.

[0007] Preferably, the transmission assembly includes two pushing rings, and four contact heads are respectively tightly attached to the inclined surfaces of the two pushing rings. A clamping rod is fixedly installed on one side of the contact head, and a rotating shaft is rotatably installed in the middle of the clamping rod. Both ends of the rotating shaft are fixedly connected to the docking head through a connecting seat, and one end of the eight clamping rods is fixedly connected to the eight clamping heads, and a strip groove is opened on one side of the eight clamping rods.

[0008] Preferably, a spring is fixedly installed on the lower side of one end of the eight clamping rods close to the clamping head, and one end of the spring away from the clamping rod is fixedly connected to the surfaces of the two docking heads respectively.

[0009] Preferably, a pin is inserted into the inside of the strip groove, a connecting frame is fixedly installed between the two ends of the pin, an insertion rod is fixedly installed on one side of the connecting frame, the surface of the insertion rod is sleeved with a sleeve, and the surface of the sleeve is fixedly connected to the two docking joints respectively.

[0010] Preferably, one end of each of the insertion rods extends to the interior of the ring groove and is fixedly mounted with a connecting strip, and one side of the connecting strip is fixedly connected to the corresponding pressure hoop.

[0011] Preferably, a sealing gasket adapted to the two connecting pipes is fixedly mounted on the inner wall of one end of the two butt joints.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) During installation, the operator inserts the two connecting pipes into the interior of the two butt joints, and at the same time drives the clamping plate to insert the positioning rod into the interior of the positioning hole for positioning. Then the operator rotates the two threaded sleeves in turn to move in opposite directions. The threaded sleeves can be rotated and moved by the cooperation of the two external threads. When the threaded sleeves move, they push the contact head through the pushing ring, so that the contact head drives the clamping rod to rotate along the rotating shaft. When the clamping rod rotates, it squeezes the spring to contract. The elastic force of the spring can make the clamping rod have elastic reset ability. When the clamping rod rotates, it drives the clamping head to press the clamping plate against the two butt joints, and at the same time, the ends of the two connecting pipes close to each other are pressed against the sealing gaskets inside the two butt joints to reduce the gap, so as to effectively seal, thereby increasing its sealing performance while quickly fixing the installation; (2) When the clamping rod rotates, the connection frame can be driven to move by the cooperation of the strip groove and the latch pin. When the connection frame moves, the insertion rod is driven to slide along the inside of the insertion sleeve, so that the insertion rod drives the pressure hoop to squeeze the airbag ring through the connecting strip, so that the airbag ring squeezes its internal gas into the inside of the expansion sealing ring through the air nozzle and the air tube to expand it, thereby filling the gap and further improving the sealing performance; when in use, the two connecting tubes can be axially displaced through the two corrugated telescopic tubes, and the stability of the axial displacement can be ensured by the cooperation of the limit sleeve and the limit rod; (3) This makes the pipe compensator easy to disassemble and assemble, and can effectively improve the sealing of its installation connection, avoid oil leakage that pollutes the environment and wastes resources, ensure the stability of the pressure and flow of the oil cooling system, and improve the operating efficiency of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0014] In the attached figure: Figure 1 Schematic diagram of the elastic compensation system structure of the ship turbine oil cooling pipeline of the present invention Figure 1 ; Figure 2 Schematic diagram of the elastic compensation system structure of the ship turbine oil cooling pipeline of the present invention Figure 2 ; Figure 3 Schematic diagram of the internal structure of the joint and the connecting pipe of the present invention Figure 1 ; Figure 4 Schematic diagram of the internal structure of the joint and the connecting pipe of the present invention Figure 2 ; Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle butt joint and the connecting pipe; Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle butt joint and the connecting pipe; Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram; In the figure: 1. Hard tube; 2. Corrugated expansion tube; 3. Butt joint; 4. Connecting tube; 5. Fixing ring; 6. Connecting block; 7. Limit rod; 8. Limit sleeve; 9. Support rod; 10. Clamping rod; 11. Expansion sealing ring; 12. Air bag ring; 13. Air nozzle; 14. Air pipe; 15. Connecting seat; 16. Contact head; 17. Clamping head; 18. Pressure hoop; 19. Positioning rod; 20. Positioning hole; 21. Clamping plate; 22. Threaded sleeve; 23. Rib; 24. Pushing ring; 25. Strip groove; 26. Pin; 27. Connecting frame; 28. Insert rod; 29. Insert sleeve; 30. Spring; 31. Ring groove; 32. Connecting strip; 33. Rotating shaft; 34. External thread; 35. Sealing gasket. DETAILED DESCRIPTION

[0015] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Embodiment 1, by Figures 1 to 7 The present invention includes a hard tube 1, both sides of the hard tube 1 are fixedly installed with a corrugated telescopic tube 2, and the two corrugated telescopic tubes 2 are fixedly installed with a butt joint 3 on the side away from each other. A connecting tube 4 is inserted into the interior of the two butt joints 3, and a tightening disc 21 is fixedly installed on the surface of the two connecting tubes 4. Four clamping heads 17 are respectively arranged at equal distances in an annular manner on the surfaces of the two tightening discs 21. The surfaces of the two butt joints 3 are respectively provided with a threaded sleeve 22, and a plurality of ribs 23 are fixedly installed on the surfaces of the two threaded sleeves 22 at equal distances in an annular manner. The two threaded sleeves 22 are threadedly connected to the two butt joints 3 through external threads 34 provided on the surfaces of the two butt joints 3, and a ring groove 31 is provided on one side of the interior of the two butt joints 3. The inner walls of the two butt joints 3 are fixedly installed with expansion sealing rings 11, and the insides of the two ring grooves 31 are fixedly installed with airbag rings 12. Four air nozzles 13 are fixedly installed on the side of the two airbag rings 12 close to each other at equal distances. One end of the air nozzle 13 is fixedly connected to the circumferential surface of the expansion sealing ring 11 through the trachea 14. The circumferential surfaces of the two airbag rings 12 are respectively provided with four pressure hoops 18 at equal distances. One side of the two threaded sleeves 22 is provided with a transmission assembly, which is transmission-connected to the eight clamping heads 17 and the eight pressure hoops 18. When the two threaded sleeves 22 rotate and move, power is output to the eight clamping heads 17 and the eight pressure hoops 18 through the transmission assembly, so that the eight clamping heads 17 fix the two butt joints 3 by pressing the two clamping plates 21, and the eight pressure hoops 18 squeeze the two airbag rings 12 to inflate the interior of the two expansion sealing rings 11.

[0017] A fixing ring 5 is fixedly installed on the surface of the rigid tube 1, and four connecting blocks 6 are fixedly installed at equal distances on the circumferential surface of the fixing ring 5. A limiting rod 7 is fixedly installed in the middle of the connecting block 6, and both ends of the surface of the four limiting rods 7 are sleeved with limiting sleeves 8. One side of the limiting sleeves 8 is fixedly connected to the two butt joints 3 through support rods 9; four positioning rods 19 are fixedly installed on the side where the two tightening plates 21 are close to each other, and a positioning hole 20 is opened on the side where the two butt joints 3 are away from each other, and the positioning rods 19 are inserted into the inside of the positioning hole 20.

[0018] During installation, the operator inserts the two connecting pipes 4 into the interior of the two butt joints 3, and at the same time drives the clamping plate 21 to drive the positioning rod 19 to be inserted into the interior of the positioning hole 20 for positioning. Then the operator rotates the two threaded sleeves 22 in turn to move in opposite directions. The threaded sleeves 22 can be rotated and moved by the cooperation of the two external threads 34. When the threaded sleeves 22 move, they drive the clamping head 17 through the transmission assembly to press the clamping plate 21 onto the two butt joints 3. At the same time, the ends of the two connecting pipes 4 that are close to each other are pressed against the interior of the two butt joints 3 to reduce the gap, so as to effectively seal, thereby improving its sealing performance while quickly fixing the installation; When the transmission component is running, it will also squeeze the airbag ring 12, so that the airbag ring 12 squeezes its internal gas into the interior of the expansion sealing ring 11 through the air nozzle 13 and the air pipe 14 to make it expand, thereby filling the gap to further improve the sealing performance; when in use, the two connecting pipes 4 can be axially displaced through the two corrugated telescopic tubes 2, and the stability of the axial displacement can be guaranteed by the cooperation of the limit sleeve 8 and the limit rod 7; this makes the pipeline compensator easy to disassemble and assemble, and can effectively improve the sealing of its installation connection, avoid oil leakage to pollute the environment and waste resources, ensure the stability of the pressure and flow of the oil cooling system, and improve the operation efficiency of the turbine.

[0019] Embodiment 2, on the basis of embodiment 1, the transmission assembly includes two pushing rings 24, and four contact heads 16 are respectively tightly attached to the inclined surfaces of the two pushing rings 24, and a clamping rod 10 is fixedly installed on one side of the contact head 16, and a rotating shaft 33 is rotatably installed in the middle of the clamping rod 10. Both ends of the rotating shaft 33 are fixedly connected to the docking head 3 through the connecting seat 15, and one end of the eight clamping rods 10 is respectively fixedly connected to the eight clamping heads 17, and one side of the eight clamping rods 10 is provided with a strip groove 25; a spring 30 is fixedly installed on the lower side of the eight clamping rods 10 close to the clamping head 17, and the end of the spring 30 away from the clamping rod 10 is respectively fixedly connected to the surface of the two docking heads 3.

[0020] The operator rotates the two threaded sleeves 22 in turn and moves them back to back. The threaded sleeves 22 can be rotated and moved by the cooperation of the two external threads 34. When the threaded sleeves 22 move, they push the contact head 16 through the pushing ring 24, so that the contact head 16 drives the clamping rod 10 to rotate along the rotating shaft 33. When the clamping rod 10 rotates, the spring 30 is squeezed to contract. The elastic force of the spring 30 can make the clamping rod 10 have elastic reset ability. When the clamping rod 10 rotates, it drives the clamping head 17 to press the clamping plate 21 onto the two docking joints 3, and at the same time, the ends of the two connecting pipes 4 that are close to each other are pressed against the sealing gaskets 35 inside the two docking joints 3 to reduce the gap for effective sealing, thereby increasing its sealing performance while quickly fixing and installing.

[0021] Example 3. On the basis of Example 2, a pin 26 is inserted into the inside of the strip groove 25, a connecting frame 27 is fixedly installed between the two ends of the pin 26, an insertion rod 28 is fixedly installed on one side of the connecting frame 27, the surface of the insertion rod 28 is sleeved with a sleeve 29, and the surface of the sleeve 29 is fixedly connected to the two docking joints 3 respectively; one end of the insertion rod 28 extends to the inside of the ring groove 31 and is fixedly installed with a connecting strip 32, one side of the connecting strip 32 is fixedly connected to the corresponding pressure hoop 18; a sealing gasket 35 adapted to the two connecting pipes 4 is fixedly installed on the inner wall of one end of the two docking joints 3.

[0022] As the clamping rod 10 rotates, the connection frame 27 can be driven to move through the cooperation of the strip groove 25 and the pin 26. When the connection frame 27 moves, it drives the insertion rod 28 to slide along the inside of the sleeve 29, so that the insertion rod 28 drives the pressure hoop 18 to squeeze the airbag ring 12 through the connecting strip 32, so that the airbag ring 12 squeezes its internal gas into the interior of the expansion sealing ring 11 through the air nozzle 13 and the air tube 14 to make it expand, thereby filling the gap to further improve the sealing performance.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An elastic compensation system for a ship turbine oil cooling pipe, comprising a hard pipe (1), characterized in that: Both sides of the hard tube (1) are fixedly mounted with corrugated telescopic tubes (2), and the sides of the two corrugated telescopic tubes (2) away from each other are fixedly mounted with butt joints (3), and the interiors of the two butt joints (3) are both inserted with connecting tubes (4), and the surfaces of the two connecting tubes (4) are both fixedly mounted with tightening discs (21), and the surfaces of the two tightening discs (21) are both respectively provided with four clamping heads (17) at equal intervals in an annular manner, and the surfaces of the two butt joints (3) are both sleeved with threaded sleeves (22), and the surfaces of the two threaded sleeves (22) are both fixedly mounted with a plurality of ribs (23) at equal intervals in an annular manner, and the two threaded sleeves (22) are threadedly connected to the two butt joints (3) through external threads (34) provided on the surfaces of the two butt joints (3), and a ring groove (31) is provided on one side of the interiors of the two butt joints (3); The inner walls of the two butt joints (3) are fixedly mounted with expansion sealing rings (11), the interiors of the two ring grooves (31) are fixedly mounted with air bag rings (12), and the sides of the two air bag rings (12) close to each other are fixedly mounted with four air nozzles (13) at equal distances in an annular manner, and one end of the air nozzle (13) is fixedly connected to the circumferential surface of the expansion sealing ring (11) through the air pipe (14), and the circumferential surfaces of the two air bag rings (12) are respectively provided with four pressure hoops (18) at equal distances in an annular manner, and two threaded sleeves ( A transmission assembly is provided on one side of each of the two threaded sleeves (22), and the transmission assembly is connected to the eight clamping heads (17) and the eight pressure hoops (18). When the two threaded sleeves (22) rotate and move, the power is output to the eight clamping heads (17) and the eight pressure hoops (18) through the transmission assembly, so that the eight clamping heads (17) fix the two butt joints (3) by pressing the two abutting plates (21), and the eight pressure hoops (18) squeeze the two airbag rings (12) to inflate the interior of the two expansion sealing rings (11).

2. The elastic compensation system for ship turbine oil cooling pipe according to claim 1, characterized in that: A fixing ring (5) is fixedly installed on the surface of the hard tube (1), and four connecting blocks (6) are fixedly installed at equal intervals on the circumferential surface of the fixing ring (5). A limiting rod (7) is fixedly installed in the middle of each connecting block (6), and limiting sleeves (8) are sleeved on both ends of the surface of the four limiting rods (7). One side of the limiting sleeve (8) is fixedly connected to the two butt joints (3) through a support rod (9).

3. The elastic compensation system for ship turbine oil cooling pipe according to claim 1, characterized in that: Four positioning rods (19) are fixedly mounted on the sides of the two abutting plates (21) that are close to each other, and positioning holes (20) are opened on the sides of the two butt joints (3) that are away from each other, and the positioning rods (19) are inserted into the interior of the positioning holes (20).

4. The elastic compensation system for ship turbine oil cooling pipes according to claim 1, characterized in that: The transmission assembly includes two pushing rings (24), and four contact heads (16) are respectively closely attached to the inclined surfaces of the two pushing rings (24). A clamping rod (10) is fixedly installed on one side of the contact head (16). A rotating shaft (33) is rotatably installed in the middle of the clamping rod (10). Both ends of the rotating shaft (33) are fixedly connected to the docking head (3) through a connecting seat (15). One end of the eight clamping rods (10) is respectively fixedly connected to the eight clamping heads (17), and a strip groove (25) is opened on one side of the eight clamping rods (10).

5. The elastic compensation system for ship turbine oil cooling pipe according to claim 4, characterized in that: A spring (30) is fixedly mounted on the lower side of one end of the eight clamping rods (10) close to the clamping head (17), and one end of the spring (30) away from the clamping rod (10) is fixedly connected to the surfaces of the two butt joints (3).

6. The elastic compensation system for ship turbine oil cooling pipes according to claim 4, characterized in that: The strip grooves (25) are each provided with a latch (26) inserted therein, a connecting frame (27) is fixedly mounted between both ends of the latch (26), an insert rod (28) is fixedly mounted on one side of the connecting frame (27), a sleeve (29) is sleeved on the surface of the insert rod (28), and the surfaces of the sleeve (29) are respectively fixedly connected to the two butt joints (3).

7. The elastic compensation system for ship turbine oil cooling pipes according to claim 6, characterized in that: One end of each of the insertion rods (28) extends to the interior of the ring groove (31) and is fixedly mounted with a connecting strip (32), and one side of each of the connecting strips (32) is fixedly connected to a corresponding pressure hoop (18).

8. The elastic compensation system for ship turbine oil cooling pipes according to claim 2, characterized in that: A sealing gasket (35) adapted to the two connecting pipes (4) is fixedly mounted on the inner wall of one end of the two butt joints (3).

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