Turbine bearing lubricating device

Abstract

The utility model provides a steam turbine bearing lubricating device, which relates to the field of lubricating devices, and comprises a bearing seat and a lubricating assembly, a bearing main body is embedded in the bearing seat, an oil injection nozzle is arranged at the upper end of the bearing seat, an oil injection pipe is connected with the upper end of the oil injection nozzle, and the lubricating assembly comprises a support rod fixed at the upper end of the bearing seat. An oil storage tank is connected to the upper end of the supporting rod, a micro oil pump is arranged between the oil storage tank and the bearing seat, meanwhile, the output end of the micro oil pump is connected with an oil injection pipe through a connecting pipe, an electric heating rod and an oil filter element are arranged in the oil storage tank, and the oil filter element is connected to the upper side of an oil outlet formed in the bottom of the oil storage tank; and the input end of the micro oil pump is connected to the oil outlet through a connecting pipe. The steam turbine bearing lubricating device overcomes the defects that an existing steam turbine bearing lubricating device cannot automatically lubricate and cannot lubricate thoroughly after being used for a long time, and meanwhile the problem that lubricating oil is solidified at low temperature cannot exist.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication devices, in particular to a steam turbine bearing lubrication device. Background Art

[0002] The bearing seat is a component installed on the turbine cylinder body or foundation to support the bearing. The bearing seat is divided into: split bearing seat, sliding bearing seat, rolling bearing seat, flanged bearing seat, outer spherical bearing seat, etc. After searching, the prior art (application number: CN202121975855.8) records "a bearing seat for automatic lubricating oil replenishment, including a base, an opening and a bearing. The base is a structure with an arc surface at the top, the opening is a cylindrical groove, and the bearing is a circular ring structure. The opening is opened at a position close to the top of the front side wall of the base, and the bearing is located in the opening. The front side wall of the bearing and the front side wall of the opening are located in the same plane. An oil replenishment device is arranged at the rear of the base, and the oil replenishment device includes an oil box, an oil delivery pipe and a connecting pipe. The bearing seat for automatic lubricating oil replenishment provided by the utility model injects lubricating oil into the interior of the oil box through the oil filling pipe, and at the same time injects cooling oil into the oil box. When the bearing is driven to operate in the base, the lubricating oil in the oil box will be absorbed by the cotton strip, and then the lubricating oil will slowly move upward along the upper oil pipe, and then flow into the interior of the bearing through the oil delivery pipe after passing through the connecting pipe, so that the bearing runs more smoothly and increases the service life of the bearing."

[0003] However, although the bearing seat of the steam turbine with automatic lubricating oil replenishment in the prior art realizes automatic replenishment of lubricating oil to lubricate the bearing, it still has some shortcomings: the oil replenishment device involved in the existing steam turbine bearing seat lubricates the bearing through the contact of oil-absorbing cotton strips with the bearing, but friction occurs with the cotton strips during the rotation of the bearing, resulting in the cotton strips being worn out and unable to contact the bearing after long-term use, and thus no lubrication effect is obtained. At the same time, the cotton strips only contact one side of the bearing, resulting in incomplete lubrication, and the bearing seat in the prior art is usually equipped with an oiling nozzle, which can lubricate the inside of the bearing through manual oiling, but it consumes manpower. Secondly, the lubrication inside the oil box for storing oil in low temperature weather may solidify, resulting in failure to normally replenish the bearing seat. Utility Model Content

[0004] In order to overcome the defects of the prior art, a turbine bearing lubrication device is provided to solve the defects of the existing turbine bearing lubrication device that cannot automatically lubricate and lubricate incompletely after long-term use, and at the same time, the problem of lubricating oil solidifying at low temperature can be solved.

[0005] To achieve the above-mentioned purpose, a steam turbine bearing lubrication device is provided, comprising: a bearing seat and a lubrication assembly, wherein a bearing body is embedded in the bearing seat, and an oil injection nozzle is provided at the upper end of the bearing seat, and an oil injection pipe is connected to the upper end of the oil injection nozzle, the lubrication assembly comprises a support rod fixed to the upper end of the bearing seat, and an oil storage tank is connected to the upper end of the support rod, and a micro oil pump is provided between the oil storage tank and the bearing seat, and an output end of the micro oil pump is connected to the oil injection pipe through a connecting pipe, an electric heating rod and an oil filter are provided inside the oil storage tank, and the oil filter is connected to the upper side of an oil outlet opened at the bottom of the oil storage tank, and an input end of the micro oil pump is connected to the oil outlet through a connecting pipe, and a control module is installed on the outer wall of the oil storage tank, and the control module is electrically connected to the micro oil pump.

[0006] Furthermore, a throttle valve is installed in the pipeline of the oil filling pipe, and the oil filling pipe is clamped on the upper end of the oil filling nozzle.

[0007] Furthermore, the micro oil pump is fixed to the bottom of the oil storage tank by bolts, and the micro oil pump is electrically connected to a time relay installed on the control module.

[0008] Furthermore, a refueling port is provided at the upper end of the oil storage tank, and a fuel tank cap is screwed onto the upper end of the refueling port.

[0009] Furthermore, an inspection port is provided at the upper end of the oil storage tank, a sealing ring is provided at the edge of the notch on the upper side of the inspection port, and a sealing plate is installed on the upper side of the sealing ring.

[0010] Furthermore, a liquid level sensor is installed inside the oil storage tank, and the liquid level sensor is electrically connected to the control module, and the control module is electrically connected to a buzzer installed on the upper side of the oil storage tank.

[0011] Furthermore, the electric heating rod is fixed to the bottom of the inner cavity of the oil storage tank, and the electric heating rod surrounds the outer side of the oil filter element.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, the time relay installed on the control module is used to control the start of the micro oil pump, so that the lubricating oil is extracted from the oil storage tank through the connecting pipe and the oil outlet, and then transported to the inside of the bearing seat through the oil filling pipe and the oil filling nozzle, so that the bearing is completely and thoroughly lubricated, and the automatic lubrication effect is achieved. During the process, the flow of the lubricating oil is controlled by the throttle valve, so as to avoid the leakage and waste of lubricating oil caused by excessive oil output, and pollution of the bearing seat;

[0014] 2. The electric heating rod in the oil storage tank is used to heat the lubricating oil inside the oil storage tank in a low temperature environment to avoid low-temperature solidification, which causes the lubricating oil to be unable to be normally extracted by the micro oil pump. In addition, the oil filter element is used to filter the lubricating oil to prevent impurities from causing adverse effects on the micro oil pump and bearings. At the same time, the liquid level sensor is used to monitor the amount of lubricating oil in real time. When the oil level is too low, the liquid level sensor and control module will start the buzzer alarm to remind the staff to add lubricating oil from the refueling port in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the oil storage tank according to an embodiment of the utility model.

[0017] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0018] Figure 4 This is a schematic diagram of the position distribution structure of the electric heating rods in an embodiment of the utility model.

[0019] In the figure: 1. bearing seat; 11. bearing body; 12. oil filling nozzle; 13. oil filling pipe; 14. throttle valve; 2. lubrication assembly; 21. micro oil pump; 22. connecting pipe; 23. support rod; 24. oil storage tank; 241. electric heating rod; 242. oil filter element; 243. oil outlet; 25. control module; 26. fuel tank cap; 261. fuel filling port; 27. sealing plate; 271. inspection port; 272. sealing ring; 28. buzzer; 29. ​​liquid level sensor. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 As shown, the utility model provides a steam turbine bearing lubrication device, comprising: a bearing seat 1 and a lubrication assembly 2.

[0021] Specifically, a bearing body 11 is embedded in the bearing seat 1, and an oiling nozzle 12 is provided at the upper end of the bearing seat 1, and an oiling pipe 13 is connected to the upper end of the oiling nozzle 12, a throttle valve 14 is installed in the pipeline of the oiling pipe 13, and the oiling pipe 13 is clamped at the upper end of the oiling nozzle 12, the lubrication assembly 2 includes a support rod 23 fixed to the upper end of the bearing seat 1, and an oil storage tank 24 is connected to the upper end of the support rod 23, and a micro oil pump 21 is provided between the oil storage tank 24 and the bearing seat 1, At the same time, the output end of the micro oil pump 21 is connected to the oil filling pipe 13 through the connecting pipe 22, the interior of the oil storage tank 24 is provided with an electric heating rod 241 and an oil filter element 242, and the oil filter element 242 is connected to the upper side of the oil outlet 243 opened at the bottom of the oil storage tank 24, and the input end of the micro oil pump 21 is connected to the oil outlet 243 through the connecting pipe 22, and the outer wall of the oil storage tank 24 is installed with a control module 25, and the control module 25 is electrically connected to the micro oil pump 21.

[0022] In this embodiment, the bearing seat 1 and the lubrication assembly 2 constitute the main structure of the turbine bearing lubrication device involved in this application.

[0023] It should be noted that the oil injection nozzle 12 and the bearing seat 1 are an integral structure under the prior art, wherein the lubricating oil can be directly injected into the bearing body 11 through the oil injection nozzle 12, which will not be described in detail.

[0024] The electric heating rod 241 is electrically connected to the temperature controller installed on the rear side of the oil storage tank 24 . At the same time, an ambient temperature sensor is provided on the rear side of the oil storage tank 24 . When encountering low temperature weather, the electric heating rod 241 is started through the temperature sensor and the control module 25 .

[0025] Specifically, the micro oil pump 21 is fixed to the bottom of the oil storage tank 24 by bolts, and the micro oil pump 21 is electrically connected to a time relay installed on the control module 25 .

[0026] The oil outlet 243 is configured as a vertical pipe structure, and the upper end of the pipe is plugged into the oil filter element 242 . The oil filter element 242 is fixed to the bottom of the inner cavity of the oil storage tank 24 by bolts.

[0027] Specifically, a refueling port 261 is provided at the upper end of the oil storage tank 24, and a tank cap 26 is screwed to the upper end of the refueling port 261. An inspection port 271 is provided at the upper end of the oil storage tank 24, and a sealing ring 272 is provided on the edge of the upper groove of the inspection port 271, and a sealing plate 27 is installed on the upper side of the sealing ring 272. A liquid level sensor 29 is installed inside the oil storage tank 24, and the liquid level sensor 29 is electrically connected to the control module 25. At the same time, the control module 25 is electrically connected to the buzzer 28 installed on the upper side of the oil storage tank 24. The electric heating rod 241 is fixed to the bottom of the inner cavity of the oil storage tank 24, and the electric heating rod 241 surrounds the outer side of the oil filter element 242.

[0028] As a preferred embodiment, the inspection port 271 is provided to facilitate the removal of the sealing plate 27 so that the oil filter element 242 can be removed from the upper side for cleaning.

[0029] As a preferred embodiment, the electric heating rod 241 arranged in the oil storage tank 24 is surrounded so that the contact area with the internal lubricating oil is increased, thereby improving the heating efficiency.

[0030] It should be noted that the control module 25 is actually an electrical control circuit board, and a protective shell is provided on the outside of the circuit board.

[0031] During use, the micro oil pump is started by timing control through the time relay installed on the control module, so that the lubricating oil is extracted from the oil storage tank through the connecting pipe and the oil outlet, and then transported to the inside of the bearing seat through the oil filling pipe and the oil filling nozzle, so that the bearing is completely and thoroughly lubricated and the automatic lubrication effect is achieved. During the process, the flow of the lubricating oil is controlled by the throttle valve to avoid the leakage and waste of the lubricating oil caused by excessive oil output and the pollution of the bearing seat; the electric heating rod in the oil storage tank is used to heat the lubricating oil inside the oil storage tank in a low temperature environment to avoid low-temperature solidification, which makes it impossible for the lubricating oil to be normally extracted by the micro oil pump. In addition, the oil filter element is used to facilitate filtering of the lubricating oil to prevent impurities from having adverse effects on the micro oil pump and the bearing. At the same time, the amount of lubricating oil is monitored in real time through the liquid level sensor. When the oil amount is too low, the buzzer alarm is activated through the liquid level sensor and the control module to remind the staff to add lubricating oil from the refueling port in time.

[0032] The steam turbine bearing lubrication device of the utility model can effectively solve the defects of the existing steam turbine bearing lubrication device that cannot be automatically lubricated and the lubrication is not thorough after long-term use, and there is no problem of low-temperature solidification of lubricating oil. It is realized on the basis of the existing steam turbine bearing lubrication device technology to ensure the automatic lubrication effect of the steam turbine bearing and the comprehensiveness of lubrication during long-term use, and it is easy to achieve the anti-solidification and liquid level sensing effects of the lubricating oil.

Claims

1. A steam turbine bearing lubrication device, comprising: A bearing seat (1) and a lubrication assembly (2), characterized in that: a bearing body (11) is embedded in the bearing seat (1), and an oil injection nozzle (12) is provided at the upper end of the bearing seat (1), and an oil injection pipe (13) is connected to the upper end of the oil injection nozzle (12), and the lubrication assembly (2) includes a support rod (23) fixed to the upper end of the bearing seat (1), and an oil storage tank (24) is connected to the upper end of the support rod (23), and a micro oil pump (21) is provided between the oil storage tank (24) and the bearing seat (1), and the micro oil pump (21) is The output end is connected to the oil filling pipe (13) via a connecting pipe (22); an electric heating rod (241) and an oil filter element (242) are provided inside the oil storage tank (24); the oil filter element (242) is connected to the upper side of an oil outlet (243) opened at the bottom of the oil storage tank (24); the input end of the micro oil pump (21) is connected to the oil outlet (243) via the connecting pipe (22); a control module (25) is installed on the outer wall of the oil storage tank (24); and the control module (25) is electrically connected to the micro oil pump (21).

2. A steam turbine bearing lubrication device according to claim 1, characterized in that: A throttle valve (14) is installed in the pipeline of the oil filling pipe (13), and the oil filling pipe (13) is clamped on the upper end of the oil filling nozzle (12).

3. A steam turbine bearing lubrication device according to claim 1, characterized in that: The micro oil pump (21) is fixed to the bottom of the oil storage tank (24) by means of bolts, and the micro oil pump (21) is electrically connected to a time relay installed on the control module (25).

4. A steam turbine bearing lubrication device according to claim 1, characterized in that: The upper end of the oil storage tank (24) is provided with a refueling port (261), and the upper end of the refueling port (261) is screwed with a tank cap (26).

5. A steam turbine bearing lubrication device according to claim 1, characterized in that: The oil storage tank (24) is provided with an inspection opening (271) at the upper end, and a sealing ring (272) is provided at the edge of the notch on the upper side of the inspection opening (271), and a sealing plate (27) is installed on the upper side of the sealing ring (272).

6. A steam turbine bearing lubrication device according to claim 1, characterized in that: A liquid level sensor (29) is installed inside the oil storage tank (24), and the liquid level sensor (29) is electrically connected to the control module (25), while the control module (25) is electrically connected to a buzzer (28) installed on the upper side of the oil storage tank (24).

7. A steam turbine bearing lubrication device according to claim 1, characterized in that: The electric heating rod (241) is fixed to the bottom of the inner cavity of the oil storage tank (24), and the electric heating rod (241) surrounds the outer side of the oil filter element (242).

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