Circulating self-weight type steam turbine fuel cut-off protection device

Abstract

The utility model belongs to the technical field of mechanical engineering, and particularly relates to a circulating self-weight steam turbine fuel cut-off protection device which comprises a steam turbine body. An oil injection port is formed in the top of the steam turbine body; the top of the oil injection port is fixedly connected with a storage barrel; a speed reducing motor is mounted on the outer wall of the storage barrel; the output end of the gear motor is fixedly connected with a tooth block; the top of the storage barrel is rotationally connected with a toothed rail; the toothed block and the toothed rail are meshed with each other; a rotatable first rotating plate is arranged at the top of the oil injection port, so that a proper amount of lubricating oil can be quantitatively injected into the oil injection port at fixed time, the problem that a worker needs to frequently add the lubricating oil into the oil injection port by means of an oil gun is solved, frequent addition of the lubricating oil into the oil injection port is reduced, the working steps of the worker are reduced, and the working efficiency is improved. And when lubricating oil is added into the oil injection port for a long time, part of the lubricating oil can be attached to the outer wall of the oil injection port, so that the lubricating oil material is wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a circulating deadweight steam turbine oil cut-off protection device. Background Art

[0002] A steam turbine is also called a steam turbine engine. Its main components include a main shaft, impeller, moving blades, coupling, cylinder, partition, stationary blades, steam seals and bearings. A circulating self-weight steam turbine is a type of steam turbine. Its characteristic is that it uses the thrust generated by the expansion of the airflow in the nozzle to drive the blades to rotate.

[0003] In order to ensure the safety of equipment and operating personnel and prevent equipment damage accidents, an oil cut-off protection device is usually installed in the steam turbine so that when the oil cut-off protection system is triggered, the steam turbine will shut down immediately to prevent it from continuing to run without lubricating oil, thereby avoiding bearing damage and other serious faults.

[0004] Through long-term observation, it is found that when injecting lubricating oil into the existing steam turbine, the lubricating oil gun is usually aligned with the oil filling port position on the steam turbine, and a proper amount of lubricating oil is continuously poured into the oil filling port, which is troublesome and part of the lubricating oil is easily missed on the outer wall of the oil filling port when pouring the lubricating oil; therefore, a circulating deadweight steam turbine oil cut-off protection device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes an oil cut-off protection device for a circulating deadweight steam turbine.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the circulating self-weight steam turbine oil cut-off protection device described in the utility model comprises a steam turbine body; an oil filling port is installed on the top of the steam turbine body; a storage barrel is fixedly connected to the top of the oil filling port; a reduction motor is installed on the outer wall of the storage barrel; a gear block is fixedly connected to the output end of the reduction motor; a rack is rotatably connected to the top of the storage barrel; the gear block and the rack are arranged to mesh with each other; two groups of connecting rods are fixedly connected to the bottom of the rack; a first rotating plate is fixedly connected to the bottom of the connecting rod; the first rotating plate is rotatably arranged on the inner wall of the bottom of the storage barrel; and a liquid outlet is opened on the inner wall of the bottom of the storage barrel.

[0007] Preferably, a bracket is fixedly connected to the outer wall of the storage barrel; a sliding rod is slidably connected to the middle of the bracket; a float is fixedly connected to the bottom of the sliding rod; two groups of airbag horns are fixedly connected to the end of the bracket; two groups of extrusion blocks are fixedly connected to the end of the bracket; the extrusion blocks are arranged on the top of the airbag horn; a weight piece is fixedly connected to the top of the sliding rod, and the weight piece is arranged close to the two groups of extrusion blocks.

[0008] Preferably, the output end of the reduction motor is fixedly connected with a fixing rod; the middle part of the fixing rod is fixedly connected with a frame, and the middle part of the frame is inclined; the middle part of the frame is provided with an adhesive plate.

[0009] Preferably, a spring is fixedly connected to the end of the extrusion block; and a counterweight block is fixedly connected to the end of the spring.

[0010] Preferably, the bracket side wall torsion spring is connected to a second rotating plate; the end of the second rotating plate is fixedly connected with bristles, and the middle of the bristles is in contact with the rack.

[0011] Preferably, a scraper is fixedly connected to the bottom of the bracket; and the inner wall of the scraper is in contact with the middle of the sliding rod.

[0012] Preferably, a plurality of groups of rubber pads are fixedly connected to the end of the extrusion block.

[0013] The utility model is beneficial in that:

[0014] 1. The circulating self-weight steam turbine oil cut-off protection device described in the utility model is equipped with a rotatable first rotating plate on the top of the oil filling port, so that a proper amount of lubricating oil can be injected into the oil filling port in a timely and quantitative manner, thereby reducing the need for workers to frequently add lubricating oil to the oil filling port with the help of an oil gun, reducing the frequent addition of lubricating oil to the oil filling port, reducing the work steps of the workers, and if lubricating oil is added to the oil filling port for a long time, part of the lubricating oil will be attached to and omitted at the outer wall of the oil filling port, resulting in a waste of lubricating oil materials.

[0015] 2. The circulating self-weight steam turbine oil cut-off protection device described in the utility model can monitor the height of the lubricating oil in the storage barrel by cooperating with the float arranged inside the storage barrel. In conjunction with the airbag horn that emits sound, it can reduce the problem of the staff failing to add lubricating oil to the storage barrel in time after the lubricating oil in the storage barrel reaches the bottom, and reduce the problem of the steam turbine main body being forced to stop working due to the oil cut-off protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0018] Figure 2 This is a schematic diagram of the storage barrel structure in the utility model;

[0019] Figure 3 for Figure 2 A magnified image of point A;

[0020] Figure 4 It is a schematic diagram of the support structure in the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the extrusion block in the utility model.

[0022] In the figure: 1. Steam turbine body; 11. Oil filling port; 12. Storage barrel; 13. Reducer motor; 14. Gear block; 15. Gear rail; 16. Connecting rod; 17. First rotating plate; 18. Liquid outlet; 2. Bracket; 21. Sliding rod; 22. Float; 23. Airbag horn; 24. Extrusion block; 25. Weight; 3. Fixing rod; 31. Frame; 32. Adhesive plate; 4. Spring; 41. Counterweight; 5. Second rotating plate; 51. Brush; 6. Scraper; 7. Rubber pad. 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] like Figure 1 , 2As shown in Figure 3, a circulating self-weight steam turbine oil cut-off protection device comprises a steam turbine body 1; an oil filling port 11 is installed on the top of the steam turbine body 1; a storage barrel 12 is fixedly connected to the top of the oil filling port 11; a reduction motor 13 is installed on the outer wall of the storage barrel 12; a gear block 14 is fixedly connected to the output end of the reduction motor 13; a rack 15 is rotatably connected to the top of the storage barrel 12; the gear block 14 and the rack 15 are arranged to mesh with each other; two groups of connecting rods 16 are fixedly connected to the bottom of the rack 15; a first rotating plate 17 is fixedly connected to the bottom of the connecting rod 16; the first rotating plate 17 is fixedly connected to the storage barrel 12 The bottom inner wall is arranged for rotation; the bottom inner wall of the storage barrel 12 is provided with a liquid outlet 18; when working, the staff needs to install the steam turbine body 1 in the working area, and then inject a proper amount of lubricating oil into the oil filling port 11 with the help of an oil gun, and turn on the switch of the steam turbine body 1 so that the stator or rotor inside the steam turbine body 1 can work normally. By setting a storage barrel 12 at the top of the oil filling port 11, the staff can inject a proper amount of lubricating oil into the storage barrel 12, and turn on the switch of the reduction motor 13, and with the help of the characteristics of the reduction motor 13, the gear block 14 can be rotated slowly, and During the rotation, the gear rail 15 meshing with it can be driven to rotate, and the first rotating plate 17 will also move synchronously under the action of the gear rail 15, and the position between the port opened in the middle of the first rotating plate 17 and the liquid outlet 18 will gradually approach each other. When the two groups overlap, the lubricating oil in the storage barrel 12 will be transferred to the oil filling port 11 and injected into the steam turbine body 1. After the first rotating plate 17 continues to rotate, the liquid outlet 18 and the port in the middle of the first rotating plate 17 will be in a state of being separated, and the liquid outlet 18 will be blocked, thereby closing the injection of lubricating oil into the steam turbine body 1. At the same time, The frequency of the power supply of the reduction motor 13 is changed to adjust the speed of the reduction motor 13. This step is coordinated with a rotatable first rotating plate 17 provided on the top of the oil filling port 11, so that a proper amount of lubricating oil can be injected into the oil filling port 11 in a regular and quantitative manner, thereby reducing the need for staff to frequently add lubricating oil to the oil filling port 11 with the help of an oil gun, reducing the frequent addition of lubricating oil to the oil filling port 11, reducing the work steps of the staff, and adding lubricating oil to the oil filling port 11 for a long time, part of the lubricating oil will be attached to the outer wall of the oil filling port 11, resulting in a waste of lubricating oil materials.

[0025] like Figure 2-5As shown, the outer wall of the storage barrel 12 is fixedly connected with a bracket 2; a sliding rod 21 is slidably connected to the middle part of the bracket 2; a float 22 is fixedly connected to the bottom of the sliding rod 21; two groups of air bag speakers 23 are fixedly connected to the end of the bracket 2; two groups of extrusion blocks 24 are fixedly connected to the end of the bracket 2; the extrusion blocks 24 are arranged on the top of the air bag speakers 23; a weighting piece 25 is fixedly connected to the top of the sliding rod 21, and the weighting piece 25 is arranged close to the two groups of extrusion blocks 24; when working, by arranging the bracket 2 on the outer wall of the storage barrel 12, so that there is a proper amount of lubricating oil inside the storage barrel 12, under the action of gravity, the float 22 will contact the lubricating oil inside the storage barrel 12 and float on the lubricating oil, and in the process of the amount of lubricating oil inside the storage barrel 12 gradually decreasing, the height of the float 22 will also move downward synchronously , and the slide bar 21 will slide in the middle of the bracket 2, and when the lubricating oil inside the storage barrel 12 reaches the limit and only a small amount is left, the float 22 will gradually separate from the top of the lubricating oil. At this time, without the support of buoyancy, the weighting member 25 will squeeze the two groups of squeezing blocks 24 downward, and the squeezing blocks 24 will pressurize the airbag horn 23, so that the airbag horn 23 will make a sound after being squeezed and remind the staff. This step cooperates with the float 22 set inside the storage barrel 12 to monitor the height of the lubricating oil inside the storage barrel 12. Cooperating with the airbag horn 23 that makes a sound, it can reduce the problem of the staff failing to add lubricating oil to the storage barrel 12 in time after the lubricating oil inside the storage barrel 12 reaches the bottom, and reduce the problem of the turbine body 1 being forced to stop working due to the oil cut-off protection.

[0026] like Figure 2 As shown, the output end of the reduction motor 13 is fixedly connected to a fixing rod 3; the middle part of the fixing rod 3 is fixedly connected to a frame 31, and the middle part of the frame 31 is inclined; the middle part of the frame 31 is provided with an adhesive plate 32; during operation, by providing a fixing rod 3 at the output end of the reduction motor 13, and before the reduction motor 13 works, the staff can install the adhesive plate 32 on the middle part of the frame 31, so that when the output end of the reduction motor 13 rotates, it will drive the inclined frame 31 to rotate, and transfer the dust floating in the air to the middle part of the adhesive plate 32 for collection. This step reduces the problem of more dust in the working environment of the turbine body 1, causing part of the dust to fall directly into the storage barrel 12 and pollute the lubricating oil material. At the same time, with the help of the inclined characteristic of the middle part of the frame 31, the speed of installation or removal of the adhesive plate 32 can be improved.

[0027] like Figure 5As shown, a spring 4 is fixedly connected to the end of the extrusion block 24; a counterweight 41 is fixedly connected to the end of the spring 4; during operation, by arranging the spring 4 at the end of the extrusion block 24, after the extrusion block 24 collides and contacts with the middle part of the airbag horn 23, the middle part of the spring 4 will be deformed under the action of inertia, and then the counterweight 41 will be driven to shake repeatedly. This step, combined with the shaking counterweight 41, can increase the force and frequency of the extrusion block 24 pressing the airbag horn 23, which can make the airbag horn 23 emit multiple sounds, further warning the staff.

[0028] like Figure 3 and 4 As shown, the torsion spring on the side wall of the bracket 2 is connected to a second rotating plate 5; the end of the second rotating plate 5 is fixedly connected to a bristle 51, and the middle part of the bristle 51 is arranged in contact with the rack 15; during operation, by arranging the second rotating plate 5 in the middle part of the bracket 2, when the rack 15 rotates, the bristle 51 will contact the middle part of the rack 15, and under the action of the torsion spring, the bristle 51 and the rack 15 are tightly fitted. This step cooperates with the bristle 51 to improve the cleanliness of the middle part of the rack 15, and reduce the problem of large resistance when it meshes with the tooth block 14 due to the accumulation of more impurities on the surface or inner groove of the rack 15.

[0029] like Figure 4 As shown, a scraper 6 is fixedly connected to the bottom of the bracket 2; the inner wall of the scraper 6 is arranged in contact with the middle of the slide bar 21; when working, by arranging the scraper 6 at the bottom of the bracket 2, the staff can inject lubricating oil into the storage barrel 12, and when the float 22 is reset upward, the scraper 6 will scrape off the lubricating oil accumulated on the surface of the slide bar 21 and transfer it to the storage barrel 12 again. This step cooperates with the arrangement of the scraper 6 to reduce the problem that when the slide bar 21 moves upward as a whole, part of the lubricating oil is exposed to the outside world, resulting in the drying and agglomeration of the lubricating oil, thereby further reducing the waste of lubricating oil materials.

[0030] like Figure 5 As shown, multiple groups of rubber pads 7 are fixedly connected to the end of the extrusion block 24; when working, by arranging multiple groups of rubber pads 7 in the middle of the extrusion block 24, when the extrusion block 24 hits the middle of the airbag horn 23, the rubber pads 7 will first contact the airbag horn 23. This step, combined with the rubber pads 7 made of soft material, can reduce the problem of large wear when the extrusion block 24 squeezes the airbag horn 23, thereby increasing the service life of the extrusion block 24.

[0031] The working principle is as follows: by installing the steam turbine body 1 in the working area, an appropriate amount of lubricating oil can be injected into the oil filling port 11 with the help of an oil gun, and after turning on the switch of the steam turbine body 1, the stator or rotor inside the steam turbine body 1 can work normally. By providing a storage bucket 12 at the top of the oil filling port 11, the staff can inject an appropriate amount of lubricating oil into the storage bucket 12, and after turning on the switch of the reduction motor 13, the gear block 14 can be rotated slowly with the help of the characteristics of the reduction motor 13, and during the rotation, the gear rail 15 meshing with it can be driven to rotate, and the first rotating plate 17 will also move synchronously under the action of the gear rail 15, and the position between the port opened in the middle of the first rotating plate 17 and the liquid outlet 18 will gradually approach each other, and when the two groups overlap, When the first rotating plate 17 is rotated together, the lubricating oil in the storage barrel 12 will be transferred to the oil filling port 11 and injected into the steam turbine body 1. After the first rotating plate 17 continues to rotate, the liquid outlet 18 and the port in the middle of the first rotating plate 17 will be in a state of being separated, and the liquid outlet 18 will be blocked, thereby closing the injection of lubricating oil into the steam turbine body 1. At the same time, the frequency of the power supply of the reduction motor 13 can be changed, and then the speed of the reduction motor 13 can be adjusted. By arranging a bracket 2 on the outer wall of the storage barrel 12, when there is a proper amount of lubricating oil in the storage barrel 12, under the action of gravity, the float 22 will contact the lubricating oil in the storage barrel 12 and float on the lubricating oil. As the amount of lubricating oil in the storage barrel 12 gradually decreases, the height of the float 22 also increases. It will move downward synchronously, and the slide bar 21 will slide in the middle of the bracket 2. When the lubricating oil inside the storage barrel 12 reaches the limit and only a small amount is left, the float 22 will gradually separate from the top of the lubricating oil. At this time, without the support of buoyancy, the weight member 25 will squeeze the two groups of squeezing blocks 24 downward, and the squeezing blocks 24 will pressurize the airbag horn 23, so that the airbag horn 23 will make a sound after being squeezed and remind the staff. By providing a fixing rod 3 at the output end of the reduction motor 13, and before the reduction motor 13 works, the staff can install the pasting plate 32 on the middle part of the frame 31, so that when the output end of the reduction motor 13 rotates, it will drive the inclined frame 31 to rotate, and transfer the dust floating in the air to the pasting plate 32. The middle part of the plate 32 is collected, and a spring 4 is provided at the end of the extrusion block 24, so that after the extrusion block 24 collides and contacts with the middle part of the airbag horn 23, the middle part of the spring 4 will be deformed under the action of inertia, and then the counterweight block 41 will be driven to shake repeatedly, and a second rotating plate 5 is provided in the middle part of the bracket 2, so that when the rack 15 rotates, the bristles 51 will contact the middle part of the rack 15, and the bristles 51 and the rack 15 will fit tightly under the action of the torsion spring, and a scraper 6 is provided at the bottom of the bracket 2, so that when the staff injects lubricating oil into the storage barrel 12 and the float 22 is reset upward, the scraper 6 will scrape off the lubricating oil accumulated on the surface of the slide rod 21 and transfer it to the inside of the storage barrel 12 again,By arranging a plurality of rubber pads 7 in the middle of the extrusion block 24, when the extrusion block 24 hits the middle of the airbag horn 23, the rubber pads 7 will first come into contact with the airbag horn 23.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A circulating deadweight steam turbine oil cut-off protection device, comprising a steam turbine body (1); an oil filling port (11) is installed on the top of the steam turbine body (1); and the device is characterized in that: The top of the oil filling port (11) is fixedly connected to a storage barrel (12); a reduction motor (13) is installed on the outer wall of the storage barrel (12); a tooth block (14) is fixedly connected to the output end of the reduction motor (13); a rack (15) is rotatably connected to the top of the storage barrel (12); the tooth block (14) and the rack (15) are arranged to mesh with each other; two groups of connecting rods (16) are fixedly connected to the bottom of the rack (15); a first rotating plate (17) is fixedly connected to the bottom of the connecting rod (16); the first rotating plate (17) is rotatably arranged on the inner wall of the bottom of the storage barrel (12); and a liquid outlet hole (18) is opened on the inner wall of the bottom of the storage barrel (12).

2. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 1 is characterized in that: The outer wall of the storage barrel (12) is fixedly connected with a bracket (2); a sliding rod (21) is slidably connected to the middle of the bracket (2); a float (22) is fixedly connected to the bottom of the sliding rod (21); two groups of airbag speakers (23) are fixedly connected to the end of the bracket (2); two groups of extrusion blocks (24) are fixedly connected to the end of the bracket (2); the extrusion blocks (24) are arranged on the top of the airbag speakers (23); a weighting piece (25) is fixedly connected to the top of the sliding rod (21), and the weighting piece (25) is arranged close to the two groups of extrusion blocks (24).

3. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 1 is characterized in that: The output end of the reduction motor (13) is fixedly connected to a fixing rod (3); the middle of the fixing rod (3) is fixedly connected to a frame (31), and the middle of the frame (31) is inclined; and the middle of the frame (31) is provided with an adhesive plate (32).

4. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 2 is characterized in that: The end of the extrusion block (24) is fixedly connected to a spring (4); the end of the spring (4) is fixedly connected to a counterweight block (41).

5. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 2 is characterized in that: The torsion spring on the side wall of the bracket (2) is connected to a second rotating plate (5); the end of the second rotating plate (5) is fixedly connected to bristles (51), and the middle of the bristles (51) is arranged in contact with the rack (15).

6. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 2 is characterized in that: A scraper (6) is fixedly connected to the bottom of the bracket (2); the inner wall of the scraper (6) is in contact with the middle of the slide rod (21).

7. The oil cut-off protection device for a circulating self-weight steam turbine according to claim 2 is characterized in that: The ends of the extrusion block (24) are fixedly connected with a plurality of groups of rubber pads (7).

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