CN114961896A - Circulating lubrication system for bearing bush - Google Patents
Circulating lubrication system for bearing bush Download PDFInfo
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- CN114961896A CN114961896A CN202210465137.9A CN202210465137A CN114961896A CN 114961896 A CN114961896 A CN 114961896A CN 202210465137 A CN202210465137 A CN 202210465137A CN 114961896 A CN114961896 A CN 114961896A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
- F01D25/20—Lubricating arrangements using lubrication pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The disclosure relates to a circulating lubrication system for a bearing bush, which comprises a main oil tank, a first flow passage, a second flow passage, a circulating pump and a high-level oil tank; the first flow channel is used for communicating a first liquid outlet of the main oil tank and a liquid inlet of the bearing bush; the second flow passage is communicated between a first liquid inlet of the main oil tank and a liquid outlet of the bearing bush, so that the first flow passage and the second flow passage are used for forming a circulating flow passage for the circulating flow of the lubricating liquid together with the bearing bush and the main oil tank; the circulating pump is arranged on the circulating flow passage; the high-level oil tank is connected to the circulating flow channel in a bypassing mode and is located above the circulating flow channel, and therefore lubricating liquid in the high-level oil tank can be guided into the circulating flow channel under the action of gravity. Through above-mentioned technical scheme, this a circulating lubrication system suitability for axle bush that this disclosure provided is good and can stable work, has improved turbo generator set's safety and stability effectively.
Description
Technical Field
The disclosure relates to the technical field of turbine lubricating systems, in particular to a circulating lubricating system for bearing bushes.
Background
The steam turbine generator unit drives the generator rotor to rotate at a high speed through the high-speed rotation of the steam turbine rotor to generate electricity, wherein the high-speed rotation of the rotor is supported through the bearing and is cooled through the lubricating oil, and therefore the reliability of the lubricating oil system directly influences the safe and stable operation of the steam turbine generator unit. In the related art, a turbo generator set usually adopts an oil pump to supply lubricating oil to each bearing bush, so as to maintain the oil supply pressure at an inlet of the bearing bush, and achieve sufficient lubrication and cooling effects.
Disclosure of Invention
In order to solve the technical problem, an object of the present disclosure is to provide a circulating lubrication system for a bearing shell, which has good applicability, can stably operate, and has good operability and low manufacturing cost.
In order to achieve the above object, the present disclosure provides a circulating lubrication system for a bearing shell, the circulating lubrication system comprising: a main oil tank; the first flow channel is used for communicating a first liquid outlet of the main oil tank and a liquid inlet of the bearing bush; the second flow passage is communicated between a first liquid inlet of the main oil tank and a liquid outlet of the bearing bush, so that the first flow passage and the second flow passage are used for forming a circulating flow passage for circulating and flowing lubricating liquid together with the bearing bush and the main oil tank; the circulating pump is arranged on the circulating flow channel; and the high-level oil tank is connected to the circulating flow channel in a side manner and is positioned above the circulating flow channel so as to guide the lubricating liquid in the high-level oil tank into the circulating flow channel under the action of gravity.
Optionally, the circulating lubrication system further includes a third flow channel, the third flow channel is provided with a check valve and is communicated between the first flow channel and the first liquid outlet of the high-level oil tank, a junction of the third flow channel and the first liquid outlet of the high-level oil tank is located at the bottom of the high-level oil tank, the circulating pump is disposed on the first flow channel, and the circulating pump is located at one end close to the first liquid outlet of the main oil tank and is located at an upstream of the junction of the third flow channel and the first flow channel.
Optionally, the circulating lubrication system further includes a fourth flow channel, the fourth flow channel is provided with a stop valve and is communicated between the first flow channel and the liquid inlet of the high-level oil tank, a connection position of the fourth flow channel and the liquid inlet of the high-level oil tank is located at the bottom of the high-level oil tank, and a connection position of the fourth flow channel and the first flow channel is located at the downstream of the circulating pump.
Optionally, a throttle orifice plate is further arranged on the fourth flow channel, the fourth flow channel comprises a first branch and a second branch which are connected in parallel, the throttle orifice plate is arranged on the first branch, and the stop valve is arranged on the second branch.
Optionally, a pressure regulator is further disposed on the first flow passage and is located downstream of the circulation pump.
Optionally, the circulating lubrication system further includes a fifth flow channel, the fifth flow channel is communicated between the circulating flow channel and the second liquid outlet of the high-level oil tank, and a joint of the fifth flow channel and the second liquid outlet of the high-level oil tank is located at the top of the high-level oil tank.
Optionally, the fifth flow channel is communicated with a first liquid inlet of the main oil tank.
Optionally, the circulation lubrication system further includes an auxiliary oil tank and a liquid inlet flow channel communicated between the second liquid inlet of the main oil tank and the liquid outlet of the auxiliary oil tank, and a junction of the liquid inlet flow channel and the liquid outlet of the auxiliary oil tank is located at the bottom of the auxiliary oil tank, a liquid supply pump is arranged on the liquid inlet flow channel, so that the lubricating liquid in the auxiliary oil tank can be guided into the main oil tank through the liquid inlet flow channel by the liquid supply pump.
Optionally, the circulating lubrication system further includes a liquid drainage channel communicated between the second liquid outlet of the main oil tank and the liquid inlet of the auxiliary oil tank, a connection between the liquid drainage channel and the liquid inlet of the auxiliary oil tank is located at the top of the auxiliary oil tank, a U-shaped pipe section is provided on the liquid drainage channel, and the second liquid outlet of the main oil tank is located above the second liquid inlet of the main oil tank, wherein the auxiliary oil tank is located below the main oil tank.
Optionally, an oil cooler is further disposed on the circulation flow channel.
Through above-mentioned technical scheme, this a circulating lubrication system for axle bush that this disclosure provided promptly forms the circulating flow who supplies lubricated liquid circulation flow jointly through first runner, second runner, axle bush and main fuel tank to can realize lubricated liquid and to the circulating lubrication of axle bush, the suitability is good and can guarantee the stable work of axle bush. In addition, the high-level oil tank can also supplement lubricating liquid into the circulating flow channel. In concrete work, it flows to drive the lubricated liquid circulation in the circulation runner through the circulating pump, namely, the first liquid outlet of autonomic oil tank flows to the axle bush via first runner in, and flow back to the main oil tank via the second runner from the liquid outlet of axle bush, and, through by-pass in circulation runner and be located circulation runner's top with the high-order oil tank, thus, can make when the circulating pump breaks down, because the lubricated liquid pressure in the circulation runner reduces, make the lubricated liquid in the high-order oil tank guide to the circulation runner in under the effect of gravity, and then can guarantee to continue to supply lubricated liquid in the axle bush, thereby avoid effectively when the circulating pump breaks down the axle bush the lubricating oil fuel feeding to appear not enough and lead to accidents such as axle bush scaling loss, can also do benefit to the pressure constancy of guaranteeing in the whole circulation system simultaneously, turbo generator set's safety and stability has been improved. Therefore, the circulating lubrication system for the bearing bush has the advantages of good applicability, stable work, good controllability and low manufacturing cost.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic diagram of a framework of a circulating lubrication system for bearing shells provided in an exemplary embodiment of the present disclosure.
Description of the reference numerals
1-a main oil tank; 2-a first flow channel; 3, bearing bush; 4-a second flow channel; 5-a circulating pump; 6-high oil tank; 7-a third flow channel; 8-a non-return valve; 9-a fourth flow channel; 910-a first branch; 920-a second branch; 10-a stop valve; 11-a restriction orifice; 12-a pressure regulator; 13-a fifth flow channel; 14-an auxiliary fuel tank; 15-liquid inlet flow channel; 16-a liquid supply pump; 17-a liquid discharge flow channel; 1710-U-shaped pipe section; 18-oil cooler.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise stated, the use of the directional terms such as "upper and lower" generally refer to the upper and lower in the space of the circulating lubrication system when the circulating lubrication system is in use; "inner and outer" refer to the inner and outer contours of a component or structure itself. In addition, it should be noted that terms such as "first", "second", and the like are used for distinguishing one element from another, and have no order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.
The inventor researches and discovers that in the related art, a steam turbine generator unit drives a generator rotor to rotate at a high speed through the high-speed rotation of the steam turbine rotor to generate electricity, wherein the high-speed rotation of the rotor is supported through a bearing and is cooled through lubricating oil, so that the reliability of a lubricating oil system directly influences the safe and stable operation of the steam turbine generator unit, and because of the arrangement form of the steam turbine generator unit, an oil tank of the lubricating oil system is mostly arranged at a position below the axis of the rotor of the steam turbine generator unit, the lubricating oil is supplied to each bearing bush through an oil pump, the oil supply pressure of an inlet of the bearing bush is maintained, and the sufficient lubricating and cooling effects are achieved. Therefore, two lubricating oil pumps are arranged in the existing lubricating oil system, one lubricating oil pump runs and the other lubricating oil pump is standby, and therefore when the running oil pump fails, the standby oil pump is started in an interlocking mode to guarantee oil supply of the bearing bush. However, since the backup oil pump needs a certain time for interlocking start, the reduction of the lubricating oil pressure after the failure oil pump stops running and before the backup oil pump is started to reach the required pressure can be caused, and when the lubricating oil pressure is lower than a certain set value, the tripping of the unit is triggered, so that the occurrence of accidents is avoided, the reliability of the unit is reduced, and a certain impact is caused to a power grid. In addition, the problems of bush burning loss, journal abrasion and the like can be caused due to insufficient amount of lubricating oil in the bush, and certain potential safety hazards exist.
Based on this, the present disclosure provides a circulating lubrication system for bearing bushes, which is shown in fig. 1 and includes a main oil tank 1, a first flow passage 2, a second flow passage 4, a circulating pump 5, and a high-level oil tank 6; the first flow channel 2 is used for communicating a first liquid outlet of the main oil tank 1 and a liquid inlet of the bearing bush 3; the second flow passage 4 is used for being communicated between a first liquid inlet of the main oil tank 1 and a liquid outlet of the bearing bush 3, so that the first flow passage 2 and the second flow passage 4 are used for forming a circulating flow passage for the circulation flow of lubricating liquid together with the bearing bush 3 and the main oil tank 1; the circulating pump 5 is arranged on the circulating flow passage; the high-level oil tank 6 is connected to the circulation flow channel in a side-by-side mode and located above the circulation flow channel, and therefore lubricating liquid in the high-level oil tank 6 can be guided into the circulation flow channel under the action of gravity.
Through above-mentioned technical scheme, this a circulating lubrication system for axle bush that openly provided promptly forms the circulating flow who supplies lubricated liquid circulation flow jointly through first runner 2, second runner 4, axle bush 3 and main oil tank 1 to can realize lubricated liquid and to the circulating lubrication of axle bush 3, the suitability is good and can guarantee the stable work of axle bush. Further, the high-level oil tank 6 can also supply a lubricating fluid into the circulation flow path. In the concrete work, the circulating pump 5 drives the lubricating liquid in the circulating flow channel to circularly flow, namely, the lubricating liquid flows from the first liquid outlet of the main oil tank 1 to the bearing bush 3 through the first flow channel 2 and flows back to the main oil tank 1 from the liquid outlet of the bearing bush 3 through the second flow channel 4, and, by connecting the high-level oil tank 6 to the circulation flow path and above the circulation flow path, it is possible to make, when the circulation pump 5 malfunctions, because the pressure of the lubricating liquid in the circulating flow passage is reduced, the lubricating liquid in the high-level oil tank 6 is guided into the circulating flow passage under the action of gravity, thereby ensuring that the lubricating liquid is continuously supplied into the bearing bush 3, effectively avoiding the accidents of burning and the like of the bearing bush 3 caused by insufficient supply of the lubricating oil when the circulating pump 5 fails, meanwhile, the pressure in the whole circulating system can be guaranteed to be constant, and the safety and stability of the steam turbine generator unit are improved. Therefore, the circulating lubrication system for the bearing bush has the advantages of good applicability, stable work, good controllability and low manufacturing cost.
The lubricating fluid may be turbine oil, and the purpose of the lubricating fluid is to lubricate and cool a bearing bush in a turbo generator set, and the disclosure is not limited specifically herein. In addition, the circulation pump 5 is provided with a check valve to prevent the lubricant in the circulation flow passage from flowing back into the main oil tank 1 through the first liquid outlet of the main oil tank 1 when the circulation pump 5 fails. In addition, the direction of the arrow in fig. 1 is the flow direction of the lubricating liquid.
In some embodiments, referring to fig. 1, the circulating lubrication system may further include a third flow channel 7, a check valve 8 is disposed on the third flow channel 7 and communicates between the first flow channel 2 and the first liquid outlet of the high-level oil tank 6, a connection point of the third flow channel 7 and the first liquid outlet of the high-level oil tank 6 is located at the bottom of the high-level oil tank 6, a circulating pump 5 is disposed on the first flow channel 2, and the circulating pump 5 is located at an end close to the first liquid outlet of the main oil tank 1 and upstream of the connection point of the third flow channel 7 and the first flow channel 2, so that when the circulating pump 5 normally operates, the check valve 8 is in a closed state, the lubricating liquid in the high-level oil tank 6 cannot enter the circulating flow channel through the third flow channel 7, the lubricating liquid in the circulating flow channel circulates under the driving of the circulating pump 5 to realize circulating lubrication of the bearing bush 3, and when the circulating pump 5 fails, because the pressure of the lubricating liquid in the circulating flow passage is reduced, the check valve 8 is in an open state, the lubricating liquid in the high-level oil tank 6 is guided into the circulating flow passage from the high-level oil tank 6 through the third flow passage 7 under the action of gravity, and then the lubricating liquid can be guaranteed to be continuously supplied into the bearing bush 3, so that the pressure in the whole circulating lubrication system is guaranteed to be constant, and the safety and stability of the turbo generator set are improved. In addition, because the junction of the third flow channel 7 and the first liquid outlet of the high-level oil tank 6 is located at the bottom of the high-level oil tank 6, the lubricating liquid in the high-level oil tank 6 can be better ensured to be discharged into the circulating flow channel from the high-level oil tank 6 under the action of gravity, the liquid supplementing speed is higher, the efficiency is higher, and the stable work of the circulating lubrication system can be ensured.
In some embodiments, referring to fig. 1, the circulating lubrication system may further include a fourth flow channel 9, a stop valve 10 is disposed on the fourth flow channel 9 and is communicated between the first flow channel 2 and the liquid inlet of the high-level oil tank 6, a connection portion of the fourth flow channel 9 and the liquid inlet of the high-level oil tank 6 is located at the bottom of the high-level oil tank 6, and a connection portion of the fourth flow channel 9 and the first flow channel 2 is located downstream of the circulating pump 5, so that before the turbo generator set is started, the stop valve 10 may be opened to supplement the lubricating liquid into the high-level oil tank 6 through the fourth flow channel 9, and when the lubricating liquid in the high-level oil tank 6 reaches the filling oil level, the stop valve 10 is closed. Wherein, a liquid level detection device such as a liquid level meter may be disposed on the high-level oil tank 6 to assist in observing the liquid level of the lubricating liquid in the high-level oil tank 6, and the stop valve 10 may be a manual valve to open or close the stop valve 10 in a manual manner, which is not specifically limited in this disclosure.
In addition, the fourth flow passage 9 may further be provided with a throttle orifice 11, and the fourth flow passage 9 includes a first branch 910 and a second branch 920 connected in parallel, the first branch 910 is provided with the throttle orifice 11, the second branch 920 is provided with a stop valve 10, so as to ensure that when the circulation pump 5 works normally, the lubricating liquid is slowly supplemented into the high-level oil tank 6 through the orifice plate 11, the pressure in a circulating lubricating system is not influenced, the lubricating liquid in the high-level oil tank 6 can be ensured to be in a high-level running state all the time, meanwhile, when the circulating pump 5 fails, the lubricating liquid in the high-level oil tank 6 can be guided into the circulating flow channel through the throttling orifice plate 11, so that the additional lubricating fluid in the high-level oil tank 6 can be quickly supplemented into the circulating flow channel to cool and lubricate the bearing bush 3, so as to ensure the stable work of the bearing bush 3 and improve the safety and stability of the turbo generator set.
In addition, the circulating lubrication system may further include a fifth flow channel 13, the fifth flow channel 13 is communicated between the circulating flow channel and the second liquid outlet of the high-level oil tank 6, and a connection portion of the fifth flow channel 13 and the second liquid outlet of the high-level oil tank 6 is located at the top of the high-level oil tank 6, so that when the lubricating liquid in the high-level oil tank 6 reaches an overflow oil level, the lubricating liquid overflows into the circulating flow channel through the fifth flow channel 13, and stable operation of the high-level oil tank 6 is ensured. Fig. 1 exemplarily shows that the fifth flow channel 13 is communicated with the second flow channel 4, and a connection portion of the fifth flow channel 13 and the second flow channel 4 is located at an end of the central point of the flow channel length of the second flow channel 4, which is close to the first liquid inlet of the main oil tank 1, so that the lubricating liquid overflowing from the high-level oil tank 6 can quickly flow back into the main oil tank 1, which is high in efficiency and good in stability, or the fifth flow channel 13 may also be communicated with the first flow channel 2, and a connection portion of the fifth flow channel 13 and the first flow channel 2 is located downstream of the circulating pump 5, so that the lubricating liquid overflowing from the high-level oil tank 6 can enter the first flow channel 2 and supply the lubricating liquid to the bearing bush 3, which is not specifically limited in this disclosure.
In order to better ensure the pressure in the whole circulation lubrication system is constant, in some embodiments, as shown in fig. 1, a pressure regulator 12 may be further disposed on the first flow passage 2, and the pressure regulator 12 is located downstream of the circulation pump 5, so that the outlet pressure of the circulation pump 5 can be adjusted to a proper value through the pressure regulator 12 due to the large outlet pressure of the circulation pump 5, and the applicability is higher and the stability is better.
In some embodiments, referring to fig. 1, the circulating lubrication system further includes an auxiliary oil tank 14 and a liquid inlet flow channel 15 communicating between a second liquid inlet of the main oil tank 1 and a liquid outlet of the auxiliary oil tank 14, a connection portion between the liquid inlet flow channel 15 and the liquid outlet of the auxiliary oil tank 14 is located at the bottom of the auxiliary oil tank 14, a liquid supply pump 16 is disposed on the liquid inlet flow channel 15, so that lubricating liquid in the auxiliary oil tank 14 can be guided into the main oil tank 1 through the liquid inlet flow channel 15 by the liquid supply pump 16, so that after the lubricating liquid in the main oil tank 1 is injected into the high-level oil tank 6, the amount of the lubricating liquid in the main oil tank 1 is greatly reduced, the lubricating liquid can be supplemented into the main oil tank 1 through the auxiliary oil tank 14, the amount of the oil in the whole circulating system is ensured, and a self-circulating system can be better formed, so as to ensure stable operation of the circulating lubrication system. Wherein, can be provided with for example level sensor on main oil tank 1, come the liquid level in the real-time supervision main oil tank 1 to with the signal feedback that detects to for example in the host computer, can control liquid feed pump 16 through the host computer and open or close, perhaps, also can be provided with liquid level detection device such as level gauge on main oil tank 1 to can assist the liquid level height of the lubricated liquid in main oil tank 1 of observation, with open or close liquid feed pump 16 through manual mode, this disclosure does not specifically limit to.
In some embodiments, referring to fig. 1, the circulating lubrication system may further include a drainage channel 17 communicating between the second liquid outlet of the main oil tank 1 and the liquid inlet of the auxiliary oil tank 14, and a junction of the drainage channel 17 and the liquid inlet of the auxiliary oil tank 14 is located at the top of the auxiliary oil tank 14, and the second liquid outlet of the main oil tank 1 is located above the second liquid inlet of the main oil tank 1, so that when the lubricating liquid in the main oil tank 1 reaches an overflow level, the lubricating liquid overflows into the auxiliary oil tank 14 through the drainage channel 17, and the stable operation of the main oil tank 1 is ensured. Wherein, auxiliary fuel tank 14 is located the below of main fuel tank 1 to in the lubricated liquid that overflows can flow to auxiliary fuel tank 14 via flowing back runner 17 under the effect of gravity in independently fuel tank 1, efficient and stability is good, need not set up the driving piece in addition simultaneously, simple structure and low in manufacturing cost. In addition, a U-shaped pipe 1710 is further arranged on the liquid drainage flow channel 17, and lubricating liquid is stored in the U-shaped pipe 1710, so that the communication between the main oil tank 1 and the auxiliary oil tank 14 can be avoided by utilizing the principle of a communicating vessel, and the stable work of a circulating lubricating system can be ensured.
In order to better ensure the stable operation of the circulating lubrication system, in some embodiments, an oil cooler 18 may be further disposed on the circulating flow channel to cool the lubricating fluid in the circulating flow channel. Fig. 1 exemplarily shows that the oil cooler 18 is located on the first flow channel 2 and located at the downstream of the circulating pump 5, so as to better cool the lubricating liquid flowing out of the main oil tank 1 and then supply the cooling liquid into the bearing bush 3, thereby facilitating to ensure the better cooling and lubricating effect of the lubricating liquid.
Based on the above embodiments, the present disclosure exemplarily describes the operation process of the circulation lubrication system, which is as follows: before the turbo generator set is started, the stop valve 10 is opened, the circulating pump 5 drives the lubricating liquid in the main oil tank 1 to be supplemented into the high-level oil tank 6 through the fourth flow channel 9, when the lubricating liquid in the high-level oil tank 6 reaches the filling oil level, the stop valve 10 is closed, the lubricating liquid in the main oil tank 1 is greatly reduced, and in order to ensure that the oil quantity in the whole circulating flow channel is sufficient, an operator can operatively open the liquid supply pump 16 to supplement the lubricating liquid in the auxiliary oil tank 14 into the main oil tank 1; when the turbo generator set works normally, the circulating pump 5 drives the lubricating liquid to flow into the bearing bush 3 from the main oil tank 1 through the first flow passage 2, and the lubricating liquid flows back into the main oil tank 1 from the liquid outlet of the bearing bush 3 through the second flow passage 4, so that the bearing bush 3 is circularly cooled and lubricated by the lubricating liquid, and because the check valve 8 on the third flow passage 7 and the stop valve 10 on the fourth flow passage 9 are both in a closed state, the lubricating liquid in the circulating flow passage can only slowly flow into the high-level oil tank 6 through the orifice plate 11 on the first branch 910 of the fourth flow passage 9, and when the lubricating liquid in the high-level oil tank 6 reaches an overflow oil level, the lubricating liquid can also overflow into the circulating flow passage through the fifth flow passage 13 and flow back into the main oil tank 1; when the circulating pump 5 for example takes place the fault shutdown state, because the lubricated liquid pressure in the circulation runner reduces, check valve 8 on the third runner opens for lubricated liquid in the high-order oil tank 6 guides in first runner 2 and flows to in the bearing bush 3 via first runner 2 under the effect of gravity, and then can guarantee to continue to supply lubricated liquid in the bearing bush 3, in order to do benefit to and guarantee that bearing bush 3 continues stable work, flow back to main oil tank 1 via second runner 4 at last, improved turbo generator set's safety and stability effectively.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A circulating lubrication system for a bearing shell, the circulating lubrication system comprising:
a main oil tank;
the first flow channel is used for communicating a first liquid outlet of the main oil tank and a liquid inlet of the bearing bush;
the second flow passage is communicated between a first liquid inlet of the main oil tank and a liquid outlet of the bearing bush, so that the first flow passage and the second flow passage are used for forming a circulating flow passage for circulating and flowing lubricating liquid together with the bearing bush and the main oil tank;
the circulating pump is arranged on the circulating flow channel;
and the high-level oil tank is connected to the circulating flow channel in a side manner and is positioned above the circulating flow channel so as to guide the lubricating liquid in the high-level oil tank into the circulating flow channel under the action of gravity.
2. The circulating lubrication system for bearing bushes according to claim 1, wherein the circulating lubrication system further comprises a third flow passage, a check valve is disposed on the third flow passage and is communicated between the first flow passage and the first liquid outlet of the high-level oil tank, a connection position of the third flow passage and the first liquid outlet of the high-level oil tank is located at the bottom of the high-level oil tank, the circulating pump is disposed on the first flow passage, and the circulating pump is located at one end close to the first liquid outlet of the main oil tank and is located upstream of the connection position of the third flow passage and the first flow passage.
3. The circulating lubrication system for bearing bushes of claim 1, wherein the circulating lubrication system further comprises a fourth flow passage, a stop valve is arranged on the fourth flow passage and is communicated between the first flow passage and the liquid inlet of the high-level oil tank, the connection position of the fourth flow passage and the liquid inlet of the high-level oil tank is located at the bottom of the high-level oil tank, and the connection position of the fourth flow passage and the first flow passage is located at the downstream of the circulating pump.
4. A circulating lubrication system for a bearing shell according to claim 3, wherein a throttle orifice plate is further disposed on the fourth flow passage, the fourth flow passage includes a first branch and a second branch which are connected in parallel, the throttle orifice plate is disposed on the first branch, and the stop valve is disposed on the second branch.
5. A hydronic system for bearing shells according to any of claims 1 to 4, wherein a pressure regulator is further provided in the first flow passage and is located downstream of the circulation pump.
6. The circulating lubrication system for bearing bushes according to claim 1, wherein the circulating lubrication system further comprises a fifth flow passage, the fifth flow passage is communicated between the circulating flow passage and the second liquid outlet of the high-level oil tank, and a joint of the fifth flow passage and the second liquid outlet of the high-level oil tank is located at the top of the high-level oil tank.
7. A circulating lubrication system for bearing bushes according to claim 6, wherein the fifth flow passage is communicated with the first liquid inlet of the main oil tank.
8. The circulating lubrication system for bearing bushes according to claim 1, wherein the circulating lubrication system further comprises an auxiliary oil tank and an inlet flow channel communicated between the second inlet of the main oil tank and the outlet of the auxiliary oil tank, a junction of the inlet flow channel and the outlet of the auxiliary oil tank is located at the bottom of the auxiliary oil tank, and a liquid supply pump is arranged on the inlet flow channel to enable the lubricating liquid in the auxiliary oil tank to be guided into the main oil tank through the inlet flow channel by the liquid supply pump.
9. The circulating lubrication system for bearing bushes of claim 8, further comprising a drainage channel communicated between the second liquid outlet of the main oil tank and the liquid inlet of the auxiliary oil tank, wherein a junction of the drainage channel and the liquid inlet of the auxiliary oil tank is located at the top of the auxiliary oil tank, a U-shaped pipe section is arranged on the drainage channel, and the second liquid outlet of the main oil tank is located above the second liquid inlet of the main oil tank, wherein the auxiliary oil tank is located below the main oil tank.
10. The circulating lubrication system for bearing bushes of claim 1, wherein an oil cooler is further arranged on the circulating flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210465137.9A CN114961896A (en) | 2022-04-25 | 2022-04-25 | Circulating lubrication system for bearing bush |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210465137.9A CN114961896A (en) | 2022-04-25 | 2022-04-25 | Circulating lubrication system for bearing bush |
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| CN114961896A true CN114961896A (en) | 2022-08-30 |
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| CN202210465137.9A Pending CN114961896A (en) | 2022-04-25 | 2022-04-25 | Circulating lubrication system for bearing bush |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252499A (en) * | 1997-03-14 | 1998-09-22 | Ishikawajima Harima Heavy Ind Co Ltd | Lubrication structure of gas turbine |
| CN201228604Y (en) * | 2008-07-28 | 2009-04-29 | 杭州发电设备厂 | Outer circulation lubricating system for hydraulic power plant |
| CN204457891U (en) * | 2014-11-21 | 2015-07-08 | 潍坊恒联浆纸有限公司 | A kind of steam turbine generator lubrication system for subsequent use |
| CN205876405U (en) * | 2016-06-28 | 2017-01-11 | 浙江大唐乌沙山发电有限责任公司 | Prevent steam turbine lubricating oil system of oil -break tile kilning |
| CN207018035U (en) * | 2017-07-17 | 2018-02-16 | 上海斯耐迪工程咨询有限公司 | A kind of safety system of generating set in the case of station service dead electricity |
| CN209942891U (en) * | 2019-05-22 | 2020-01-14 | 内蒙古岱海发电有限责任公司 | Lubricating oil emergency oil supply system for steam turbine |
| CN215636463U (en) * | 2020-12-22 | 2022-01-25 | 四川宏达股份有限公司 | Circulating cooling system for liquid pump lubricating oil |
-
2022
- 2022-04-25 CN CN202210465137.9A patent/CN114961896A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252499A (en) * | 1997-03-14 | 1998-09-22 | Ishikawajima Harima Heavy Ind Co Ltd | Lubrication structure of gas turbine |
| CN201228604Y (en) * | 2008-07-28 | 2009-04-29 | 杭州发电设备厂 | Outer circulation lubricating system for hydraulic power plant |
| CN204457891U (en) * | 2014-11-21 | 2015-07-08 | 潍坊恒联浆纸有限公司 | A kind of steam turbine generator lubrication system for subsequent use |
| CN205876405U (en) * | 2016-06-28 | 2017-01-11 | 浙江大唐乌沙山发电有限责任公司 | Prevent steam turbine lubricating oil system of oil -break tile kilning |
| CN207018035U (en) * | 2017-07-17 | 2018-02-16 | 上海斯耐迪工程咨询有限公司 | A kind of safety system of generating set in the case of station service dead electricity |
| CN209942891U (en) * | 2019-05-22 | 2020-01-14 | 内蒙古岱海发电有限责任公司 | Lubricating oil emergency oil supply system for steam turbine |
| CN215636463U (en) * | 2020-12-22 | 2022-01-25 | 四川宏达股份有限公司 | Circulating cooling system for liquid pump lubricating oil |
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