Anti-vibration frame for oil supply pipeline of power plant speed regulating system

Abstract

The utility model discloses an anti-vibration frame for an oil supply pipeline of a power plant speed regulating system. The anti-vibration frame effectively solves the problem that most of existing pipeline anti-vibration protection assemblies protect a single pipeline. Comprising two adjacent oil supply pipelines, a supporting frame is arranged between the two oil supply pipelines, the supporting frame comprises a supporting base at the bottom, a fixing cylinder is coaxially fixed to the supporting base, a vertical rod is coaxially arranged in the fixing cylinder in a sliding mode, a rotating block is rotationally connected to the top of the vertical rod, and a connecting cylinder is fixed to the rotating block; through the arrangement of the supporting frame, the rotating block, the U-shaped clamping jaw and the like, when two adjacent oil supply pipelines are met, only the supporting frame needs to be arranged between the two oil supply pipelines, the main positioning rod and the two auxiliary positioning rods conduct center positioning on the oil supply pipelines under the action of the springs, and compared with a traditional damping assembly, the damping assembly has the advantages that the damping effect is good; in this way, two pipelines can be clamped at the same time, and when the pipeline clamping device is used in a factory, the use cost is reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil supply systems, in particular to a shockproof frame for oil supply pipelines of a power plant speed regulation system. Background Art

[0002] The oil supply system of a power plant, especially in a steam power plant, usually refers to the system that provides lubrication and control oil for steam turbines and other key equipment. Specifically, the EH oil supply system (EH stands for High Pressure Electro-Hydraulic) is a dedicated system that provides high-pressure fire-resistant oil to the speed control system and protection system of the steam turbine. It is used to drive the steam turbine's speed control valve, main steam valve, extraction check valve and other actuators, as well as for emergency trip, overspeed protection and other safety functions.

[0003] However, the oil supply pipeline may vibrate during use. The causes of vibration include: mechanical vibration of power equipment, pulsation of liquid, water hammer effect, valve characteristics, excessively long pipelines, and two-phase flow of fluid.

[0004] However, the current shock-absorbing equipment for pipelines is mostly used to protect one pipeline. However, in the oil supply system, there are often two adjacent pipelines. At this time, if shock-absorbing protection is performed on one pipeline alone, two shock-absorbing components need to be set on the two pipelines respectively, which increases the cost of shock-absorbing protection and is more troublesome to install. Utility Model Content

[0005] In view of the above problems, the present invention provides a shockproof frame for oil supply pipelines of a power plant speed regulation system, which has the advantage of simultaneously providing shock-absorbing protection for two oil supply pipelines.

[0006] The technical solution is that the utility model comprises two adjacent oil supply pipelines, a support frame is arranged between the two oil supply pipelines, the support frame comprises a support seat at the bottom, a fixed cylinder is coaxially fixed on the support seat, a vertical rod is coaxially slid in the fixed cylinder, a rotating block is rotatably connected to the top of the vertical rod, a connecting cylinder is fixed on the rotating block, symmetrically distributed clamping arms are respectively arranged on both sides of the connecting cylinder, a U-shaped clamping claw is fixed on one end of the clamping arm close to the oil supply pipeline, and the two U-shaped clamping claws are respectively sleeved on the corresponding oil supply pipelines;

[0007] A slide groove is respectively provided in the two clamping arms, a main positioning rod is slidably connected in the slide groove, the main positioning rod is connected to the slide groove by a spring, two auxiliary positioning rods are slidably connected to the two U-shaped clamping jaws, the main positioning rod and the two auxiliary positioning rods are evenly distributed on the circumference, an arc-shaped push plate is fixed to one end of the main positioning rod and the two auxiliary positioning rods close to the oil supply pipeline, a circular plate is fixed to one end of the auxiliary positioning rod away from the arc-shaped push plate, and the circular plate is connected to the U-shaped clamping jaw by a spring;

[0008] Rectangular holes are respectively provided on both sides of the connecting tube, and the two clamping arms slide in the rectangular holes. A connecting shaft is coaxially rotated in the connecting tube, and a handle is coaxially fixed to one end of the connecting shaft that passes through the top of the connecting tube, and a transmission gear is coaxially fixed to the bottom of the connecting shaft. A rack is fixed on one side of the two clamping arms close to the transmission gear, and the transmission gear is meshed with the two racks.

[0009] Preferably, a threaded rod is coaxially rotated in the fixed cylinder, a threaded hole matching the threaded rod is provided in the vertical rod, a first bevel gear is coaxially fixed to the bottom of the threaded rod, a connecting rod is rotatably passed through one side of the fixed cylinder, a second bevel gear located in the fixed cylinder is coaxially fixed to one end of the connecting rod, the second bevel gear is meshed with the first bevel gear, a support block is fixed on the support seat, one end of the connecting rod away from the second bevel gear is rotatably connected to the support block, a roller is coaxially fixed on the connecting rod, and a plurality of circumferentially evenly distributed transverse grooves are provided on the roller.

[0010] Preferably, the handle and the top of the connecting tube are respectively provided with a plurality of circumferentially evenly distributed insertion holes, and a limit pin is inserted into one of the insertion holes.

[0011] Preferably, a limiting groove is provided on the inner wall of the fixing tube, and a limiting strip located in the limiting groove is fixed on the vertical rod.

[0012] Preferably, a rubber gasket is provided on the contact surface between the arc-shaped push plate and the oil supply pipeline.

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

[0014] 1. Through the settings of the support frame, rotating block and U-shaped clamping claw, when encountering two adjacent oil supply pipelines, it is only necessary to place the support frame between the two oil supply pipelines. When the U-shaped clamping claw is coaxial with the oil supply pipeline, the main positioning rod and the two auxiliary positioning rods center the oil supply pipeline under the action of the spring. Compared with the traditional shock absorbing assembly, this method can clamp two pipelines at the same time. At the same time, the main positioning rod and the auxiliary positioning rod can also be used to clamp oil supply pipelines of different diameters. When used in the factory, it not only reduces the use cost, but also improves the installation efficiency.

[0015] 2. Through the connection shaft, transmission gear and rack, workers can directly turn the handle, and the transmission gear drives the two clamping arms to move, so as to adjust the distance between the two U-shaped clamping claws and the oil supply pipeline, thereby improving the versatility of the shock absorbing assembly.

[0016] 3. Through the settings of threaded rods, connecting rods and rollers, workers place the support frame between two oil supply pipes, step on the rollers and rotate them, and the vertical rods move up or down driven by the first bevel gear, the second bevel gear and the threaded rods, thereby realizing stepless adjustment of the support frame height. It can be applied to oil supply pipes of various heights, further improving the universality of the shockproof components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the utility model.

[0018] Figure 2 It is a schematic diagram of the support frame and the connecting piece in the utility model.

[0019] Figure 3 It is a schematic diagram of the limit strip and the connecting piece in the utility model.

[0020] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 5 It is a schematic diagram of the U-shaped clamping jaw and the connecting piece in the utility model.

[0022] Figure 6 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0023] Explanation of the symbols in the schematic diagram:

[0024] 1. Oil supply pipeline; 2. Support frame; 3. Support seat; 4. Fixed cylinder; 5. Vertical pole; 6. Rotating block; 7. Connecting cylinder; 8. Clamping arm; 9. U-shaped clamping claw; 10. Main positioning rod; 11. Secondary positioning rod; 12. Arc push plate; 13. Round plate; 14. Connecting shaft; 15. Handle; 16. Transmission gear; 17. Rack; 18. Threaded rod; 19. First bevel gear; 20. Connecting rod; 21. Second bevel gear; 22. Support block; 23. Roller; 24. Socket; 25. Limit pin; 26. Limit groove; 27. Limit strip. DETAILED DESCRIPTION

[0025] 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.

[0026] Depend on Figures 1 to 5The invention provides a method of providing a plurality of oil supply pipelines 1, wherein the plurality of oil supply pipelines 1 are provided with a plurality of support frames 2, wherein the plurality of support frames 2 are provided with a plurality of support frames 3 ...

[0027] The two clamping arms 8 are respectively provided with a slide groove, in which a main positioning rod 10 is slidably connected, and the main positioning rod 10 is connected to the slide groove by a spring, and two secondary positioning rods 11 are respectively slidably connected to the two U-shaped clamping jaws 9, and the main positioning rod 10 and the two secondary positioning rods 11 are evenly distributed on the circumference, and the main positioning rod 10 and the two secondary positioning rods 11 are fixed with an arc-shaped push plate 12 at one end close to the oil supply pipeline 1, and a circular plate 13 is fixed at one end of the secondary positioning rod 11 away from the arc-shaped push plate 12, and the circular plate 13 is connected to the U-shaped clamping jaw 9 by a spring. When the oil pipeline vibrates, it is buffered under the action of the spring. Through the main positioning rod 10, the auxiliary positioning rod 11 and the arc-shaped push plate 12, when the U-shaped clamp 9 is coaxial with the oil supply pipeline 1, the main positioning rod 10 and the two auxiliary positioning rods 11 are used to center the oil supply pipeline 1 under the action of the spring. Compared with the traditional shock-absorbing components, this method can clamp two pipelines at the same time. At the same time, the main positioning rod 10 and the auxiliary positioning rod 11 can also be used to clamp oil supply pipelines 1 with different diameters. When used in the factory, it not only reduces the use cost, but also improves the installation efficiency;

[0028] Taking into account that the distances between the two oil supply pipes 1 in the oil supply system are different, rectangular holes are respectively opened on both sides of the connecting cylinder 7, and the two clamping arms 8 slide in the rectangular holes. A connecting shaft 14 coaxially rotates in the connecting cylinder 7, and a handle 15 is coaxially fixed to one end of the connecting shaft 14 that passes through the top of the connecting cylinder 7, and a transmission gear 16 is coaxially fixed to the bottom of the connecting shaft 14. A rack 17 is fixed on one side of the two clamping arms 8 close to the transmission gear 16, and the transmission gear 16 is meshed with the two racks 17. Through the settings of the connecting shaft 14, the transmission gear 16 and the rack 17, the worker can directly rotate the handle 15, and the transmission gear 16 drives the two clamping arms 8 to move, so as to adjust the distance between the two U-shaped jaws 9 and the oil supply pipe 1, thereby improving the versatility of the shock absorbing assembly.

[0029] refer to Figure 3 and Figure 6 As shown, considering that the installation heights of the pipelines are different, a threaded rod 18 is coaxially rotated in the fixed cylinder 4, a threaded hole matching the threaded rod 18 is opened in the vertical rod 5, a first bevel gear 19 is coaxially fixed to the bottom of the threaded rod 18, a connecting rod 20 is rotated through one side of the fixed cylinder 4, and a second bevel gear 21 located in the fixed cylinder 4 is coaxially fixed at one end of the connecting rod 20, and the second bevel gear 21 is meshed with the first bevel gear 19, a support block 22 is fixed on the support seat 3, and one end of the connecting rod 20 away from the second bevel gear 21 is engaged with the support block 2 2 is rotatably connected, a roller 23 is coaxially fixed on the connecting rod 20, and a plurality of circumferentially uniformly distributed transverse grooves are provided on the roller 23, and the transverse grooves are used to increase friction. Through the arrangement of the threaded rod 18, the connecting rod 20 and the roller 23, the worker puts the support frame 2 between the two oil supply pipelines 1, steps on the roller 23 and rotates it, and the vertical rod 5 moves upward or downward driven by the first bevel gear 19, the second bevel gear 21 and the threaded rod 18, thereby realizing stepless adjustment of the height of the support frame 2, which can be applicable to oil supply pipelines 1 of various heights, and further improving the universality of the anti-vibration component.

[0030] refer to Figure 4 As shown, considering that the handle 15 may rotate after adjustment, a plurality of circumferentially evenly distributed sockets 24 are respectively provided on the top of the handle 15 and the connecting tube 7, and a limit pin 25 is inserted into one of the sockets 24. Through the arrangement of the sockets 24 and the limit pin 25, the limit pin 25 is inserted into the corresponding socket 24 to fix the handle 15 and prevent the handle 15 from rotating.

[0031] refer to Figure 3 and Figure 6 As shown, in order to limit the position of the vertical rod 5 , a limiting groove 26 is provided on the inner wall of the fixing tube 4 , and a limiting strip 27 located in the limiting groove 26 is fixed on the vertical rod 5 .

[0032] In order to increase the friction between the arc-shaped push plate 12 and the oil supply pipeline 1 , a rubber gasket is provided on the contact surface between the arc-shaped push plate 12 and the oil supply pipeline 1 .

[0033] When the utility model is used:

[0034] First, place the support frame 2 between the two oil supply pipelines 1, adjust the rotating block 6 according to the angles of the two oil supply pipelines 1, and then sleeve the two U-shaped clamps 9 on the corresponding oil supply pipelines 1 respectively;

[0035] Then, when the U-shaped clamp 9 is coaxial with the oil supply pipeline 1, the main positioning rod 10 and the two auxiliary positioning rods 11 perform center positioning on the oil supply pipeline 1 under the action of the spring, and when the pipeline vibrates, it is buffered under the action of the spring;

[0036] Secondly, when the distances between the two oil supply pipes 1 in the oil supply system are different, the worker can directly turn the handle 15, and the transmission gear 16 drives the two clamping arms 8 to move;

[0037] Finally, for the oil supply pipelines 1 at different heights, the worker places the support frame 2 between the two oil supply pipelines 1, steps on the roller 23 and rotates it, and the vertical rod 5 moves upward or downward driven by the first bevel gear 19, the second bevel gear 21 and the threaded rod 18.

[0038] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shockproof frame for oil supply pipelines of a power plant speed control system, comprising two adjacent oil supply pipelines (1), characterized in that: A support frame (2) is arranged between the two oil supply pipelines (1), the support frame (2) comprises a support seat (3) at the bottom, a fixed cylinder (4) is coaxially fixed on the support seat (3), a vertical rod (5) is coaxially slidable in the fixed cylinder (4), a rotating block (6) is rotatably connected to the top of the vertical rod (5), a connecting cylinder (7) is fixed on the rotating block (6), and symmetrically distributed clamping arms (8) are respectively arranged on both sides of the connecting cylinder (7), and a U-shaped clamping claw (9) is fixed at one end of the clamping arm (8) close to the oil supply pipeline (1), and the two U-shaped clamping claws (9) are respectively sleeved on the corresponding oil supply pipeline (1); A slide groove is respectively provided in the two clamping arms (8), a main positioning rod (10) is slidably connected in the slide groove, the main positioning rod (10) is connected to the slide groove by a spring, two auxiliary positioning rods (11) are respectively slidably connected to the two U-shaped clamping jaws (9), the main positioning rod (10) and the two auxiliary positioning rods (11) are evenly distributed on the circumference, an arc-shaped push plate (12) is fixed to one end of the main positioning rod (10) and the two auxiliary positioning rods (11) close to the oil supply pipeline (1), a circular plate (13) is fixed to one end of the auxiliary positioning rod (11) away from the arc-shaped push plate (12), and the circular plate (13) is connected to the U-shaped clamping jaw (9) by a spring; Rectangular holes are respectively provided on both sides of the connecting tube (7), and the two clamping arms (8) slide in the rectangular holes. A connecting shaft (14) is coaxially rotated in the connecting tube (7), and a handle (15) is coaxially fixed to one end of the connecting shaft (14) that passes through the top of the connecting tube (7). A transmission gear (16) is coaxially fixed to the bottom of the connecting shaft (14), and a rack (17) is fixed on one side of the two clamping arms (8) close to the transmission gear (16), and the transmission gear (16) is meshed with the two racks (17).

2. The anti-vibration frame for oil supply pipeline of power plant speed regulation system according to claim 1 is characterized in that: A threaded rod (18) is coaxially rotatable in the fixed cylinder (4), a threaded hole matching the threaded rod (18) is provided in the vertical rod (5), a first bevel gear (19) is coaxially fixed to the bottom of the threaded rod (18), a connecting rod (20) is rotatably passed through one side of the fixed cylinder (4), a second bevel gear (21) located in the fixed cylinder (4) is coaxially fixed to one end of the connecting rod (20), the second bevel gear (21) is meshed with the first bevel gear (19), a supporting block (22) is fixed on the supporting seat (3), one end of the connecting rod (20) away from the second bevel gear (21) is rotatably connected to the supporting block (22), a rotating roller (23) is coaxially fixed on the connecting rod (20), and a plurality of circumferentially evenly distributed transverse grooves are provided on the rotating roller (23).

3. The anti-vibration frame for oil supply pipeline of power plant speed regulation system according to claim 1 is characterized in that: The handle (15) and the top of the connecting tube (7) are respectively provided with a plurality of insertion holes (24) evenly distributed around the circumference, and a limit pin (25) is inserted into one of the insertion holes (24).

4. The anti-vibration frame for oil supply pipeline of power plant speed regulation system according to claim 1 is characterized in that: A limiting groove (26) is provided on the inner wall of the fixing tube (4), and a limiting strip (27) located in the limiting groove (26) is fixed on the vertical rod (5).

5. The anti-vibration frame for oil supply pipeline of power plant speed regulation system according to claim 1 is characterized in that: The contact surface between the arc-shaped push plate (12) and the oil supply pipeline (1) is provided with a rubber gasket.

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