CN213982946U - Protection device applied to main pump sliding bearing in water delivery and transfer system - Google Patents
Protection device applied to main pump sliding bearing in water delivery and transfer system Download PDFInfo
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- CN213982946U CN213982946U CN202022378524.8U CN202022378524U CN213982946U CN 213982946 U CN213982946 U CN 213982946U CN 202022378524 U CN202022378524 U CN 202022378524U CN 213982946 U CN213982946 U CN 213982946U
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Abstract
The utility model discloses a be applied to protection device of main pump slide bearing in water delivery and transfer system, include: sliding bearings at both ends of the pump, and lubricating oil supply devices for the sliding bearings; the lubrication oil supply device includes: the device comprises a thin oil station oil tank (6), oil pumps (7 and 9) in the thin oil station oil tank, an oil inlet pipe (18) connected with the oil pumps and the upper end of a sliding bearing, an oil return pipe (13) connected with the thin oil station oil tank (6) and the lower end of the sliding bearing, and a manual ball valve I (8) and a check valve I (12) mounted on the oil inlet pipe (18); the device also comprises a high-level oil tank (5) arranged above the sliding bearing. The utility model discloses can provide sufficient oil mass for slide bearing, avoid leading to main pump drive end and non-drive end bearing and tile to damage or burn out because of the defect of lubricated mode, have the automatic fuel feeding function, make slide bearing reach the intensive lubrication, advantages such as safe and reliable, efficient.
Description
Technical Field
The utility model relates to a water resource field, especially a be applied to protection device of main pump slide bearing among water delivery and transfer system are carried to the pipeline.
Background
The pipeline transportation is an energy-saving emission-reducing and environment-friendly project actively popularized and applied by the state at present, meets the sustainable development requirement of the state, is a project supported by national industrial policies, and is an important measure for improving economic benefits and reducing cost of enterprise implementation projects.
At present, in a pipeline water delivery system, particularly in a long-distance pipeline, large-pipe-diameter, large-flow, large-pressure and high-lift water delivery system, the selection of a booster pump type of a water pumping station has great difficulty. The horizontal split horizontal type multistage double-suction centrifugal pump is widely applied to a pipeline water delivery project, the bearing lubrication of the pump adopts 'two-end support' sliding bearing lubrication according to the working principle and the design requirement of the pump, and the practical experience proves that the lubricating mode has more defects, such as incapability of keeping oil mass balance, no cooling system, easy rise of bearing temperature, and particularly, unnecessary economic loss caused by damage or burnout of a bearing and a bush due to incapability of working of the lubricating system due to power supply faults.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to the problem that above-mentioned exists, the protection device who is applied to main pump slide bearing in water delivery and transfer system is provided, change slide bearing's lubricated fuel feeding mode, continue to supply oil to the slide bearing of pump when electrical fault, and can fully lubricate, effectively solve the disadvantage that current lubrication mode exists, the slide bearing of main pump has effectively been ensured, thereby prolong slide bearing's life, the bearing operation and the maintenance cost of the horizontal multistage double suction centrifugal pump of middle-open type greatly reduced level simultaneously, make pipeline system safe and stable operation, economic benefits improves.
The utility model adopts the technical scheme as follows:
the utility model relates to a protection device applied to a main pump sliding bearing in a water delivery and transfer system, which comprises sliding bearings at two ends of a main pump and a lubricating oil supply device of the sliding bearings; the lubricating oil supply device comprises a thin oil station oil tank, an oil pump, an oil inlet pipe, an oil return pipe and a manual ball valve I, wherein the oil pump is arranged in the thin oil station oil tank; the device also comprises a high-level oil tank arranged above the sliding bearing; the high-level oil tank is communicated with the oil tank of the thin oil station through the high-level oil tank oil inlet pipe, is communicated with the oil inlet pipe through the high-level oil tank oil outlet pipe, and is communicated to the oil tank of the thin oil station through the high-level oil tank overflow pipe.
Preferably, the sliding bearing comprises a sliding bearing I and a sliding bearing II, and the sliding bearing I and the sliding bearing II are respectively arranged at two ends of the pump and are communicated with the oil inlet pipe (18) and the oil return pipe (13).
Preferably, the 1# oil pump and the 2# oil pump are installed in the thin oil station oil tank, and the 1# oil pump and the 2# oil pump are both connected with the oil inlet pipe and the high-level oil tank oil inlet pipe.
Preferably, the high-level oil tank overflow pipe, the high-level oil tank oil inlet pipe and the high-level oil tank oil outlet pipe are respectively and sequentially arranged with the connecting port of the high-level oil tank from top to bottom.
Preferably, a check valve II is arranged on the oil outlet pipe of the high-level oil tank; and the communication position of the oil outlet pipe and the oil inlet pipe of the high-level oil tank is positioned on the oil inlet pipe between the first check valve and the sliding bearing.
Preferably, an electromagnetic valve is additionally arranged on the oil inlet pipe of the high-level oil tank.
Preferably, a liquid level float switch is installed in the high-level oil tank and is in linkage control with the electromagnetic valve.
Preferably, a manual ball valve II is additionally arranged between the communication position of the oil inlet pipe and the oil inlet pipe of the high-level oil tank and the check valve I.
Preferably, the overflow pipe and the oil return pipe of the high-level oil tank are both connected with the bottom of the oil tank of the thin oil station, and the overflow pipe and the oil return pipe of the high-level oil tank are not in cross connection and are jointly connected with the oil tank of the thin oil station.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses set up oil supply unit in original bearing lubricating system, continue the slide bearing fuel feeding to the pump when electrical failure, make it have the automatic fuel feeding function.
2. The utility model can effectively provide enough lubricating oil for the bearing, and effectively prevent the sliding bearing and the tile of the horizontal split horizontal type multistage double-suction centrifugal pump from being damaged or burned out; the bearing has the advantages of full lubrication, safety, reliability, high efficiency and the like, reduces the damage of equipment and economic loss caused by the damage, and plays a positive role in promoting the safe, stable and economic operation of the pump.
3. The safe and stable operation of the pipeline water delivery system is ensured, the equipment maintenance cost and labor force are reduced, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic structural view of a lubricating device of a conventional sliding bearing.
Fig. 2 is the utility model discloses a be applied to main pump slide bearing's among water delivery and transfer system structural schematic diagram.
The labels in the figure are: 1 is high-order oil tank overflow pipe, 2 is high-order oil tank inlet pipe, 3 is high-order oil tank outlet pipe, 4 is the solenoid valve, 5 is high-order oil tank, 6 is the thin oil station oil tank, 7 is the 1# oil pump, 8 is manual ball valve one, 9 is the 2# oil pump, 10 is the check valve two, 11 is manual ball valve two, 12 is the check valve one, 13 is the oil return pipe, 14 is the motor, 15 is slide bearing one, 16 is the pump, 17 is slide bearing two.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the conventional lubricating device for a sliding bearing includes a thin oil station oil tank 6, wherein an oil pump is installed in the thin oil station oil tank 6, and two oil pumps are preferably installed; the thin oil station oil tank 6 is respectively connected to the upper end of the sliding bearing through an oil inlet pipe 18 and connected to the lower end of the sliding bearing through an oil return pipe 13; and a manual ball valve I8 and a check valve I12 are sequentially arranged on the oil inlet pipe 18.
As shown in fig. 2, the utility model discloses a protection device for a main pump sliding bearing in a water delivery and transfer system, which comprises a sliding bearing and a lubricating device for the sliding bearing; the device also comprises a high-level oil tank 5 arranged above the sliding bearing; the high-level oil tank 5 is communicated with the thin oil station oil tank 6 through a high-level oil tank oil inlet pipe 2, communicated with an oil inlet pipe 18 through a high-level oil tank oil outlet pipe 3, and communicated to the thin oil station oil tank 6 through a high-level oil tank overflow pipe 1.
In the embodiment, the sliding bearing comprises a first sliding bearing 15 and a second sliding bearing 17, the first sliding bearing 15 and the second sliding bearing 17 are respectively arranged at two ends of the pump 16 and are communicated with the oil inlet pipe 18 and the oil return pipe 13, and the first sliding bearing 15 is further connected with the motor 14; the 1# oil pump 7 and the 2# oil pump 9 are installed in the thin oil station oil tank 6, and the 1# oil pump 7 and the 2# oil pump 9 are both connected with the oil inlet pipe 18 and the high-level oil tank oil inlet pipe 2; the high-level oil tank overflow pipe 1, the high-level oil tank oil inlet pipe 2 and the high-level oil tank oil outlet pipe 3 are respectively and sequentially arranged with a connecting port of the high-level oil tank 5 from top to bottom; a check valve II 10 is arranged on the oil outlet pipe 3 of the high-level oil tank; the communication position of the oil outlet pipe 3 of the high-level oil tank and the oil inlet pipe 18 is positioned on the oil inlet pipe 18 between the first check valve 12 and the sliding bearing; the high-level oil tank oil inlet pipe 2 is additionally provided with an electromagnetic valve 4; a liquid level float switch is arranged in the high-level oil tank 5 and is controlled in an interlocking manner with the electromagnetic valve 4; a manual ball valve II 11 is additionally arranged between the communication part of the high-level oil tank oil inlet pipe 2 and the oil inlet pipe 18 and the check valve I12; the overflow pipe 1 and the oil return pipe 13 of the high-level oil tank are both connected with the bottom of the oil tank 6 of the thin oil station, and the overflow pipe 1 and the oil return pipe 13 of the high-level oil tank are not in cross connection and are respectively connected with two interfaces of the oil tank 6 of the thin oil station.
The utility model discloses a lubricating arrangement at current slide bearing, upgrade and improve on thin oil station lubricating system's the basis promptly, install high-order oil tank 5 additional in original thin oil station system, the mounted position should be protected about 5m with the slide bearing of main pump 16 and slide bearing's lift height at least, also can calculate and decide according to the operating mode demand. The electromagnetic valve 4 is additionally arranged on the high-level oil tank oil inlet pipe 2, and the electromagnetic valve 4 is used for controlling the on-off of an oil way according to the requirement. The high-level oil tank 5 and the thin oil station oil tank 6 are communicated through the high-level oil tank overflow pipe 1, and when the liquid level of the high-level oil tank 5 exceeds an overflow port, oil passes through the high-level oil tank overflow pipe 1 to reach the thin oil station oil tank 6. The high-level oil tank outlet pipe 3 is connected to the oil inlet pipe 18 of the original sliding bearing, and a second check valve 10 is arranged on the high-level oil tank outlet pipe 3 and is used for controlling and preventing oil from flowing backwards. And a manual ball valve II 11 is additionally arranged on the oil tank 6 of the thin oil station and the original sliding bearing oil inlet pipe 18, and the switching of the oil supply mode can be controlled according to the working condition requirement. A liquid level float switch is arranged on the high-level oil tank 5 and is in linkage control with the electromagnetic valve 4, when the liquid level of the high-level oil tank 5 is low, the electromagnetic valve 4 is automatically opened to supplement oil to the high-level oil tank 5, and when the liquid level of the high-level oil tank 5 is high, the electromagnetic valve 4 is automatically closed.
The utility model discloses an original lubricating system of thin oil station upgrades and improves, can realize automated control, adopts two kinds of control modes to carry out the fuel feeding to the lubricated position of main pump bearing, and it is long-range centralized control and on-the-spot control respectively, selects according to the demand. The following focuses on the field in-situ control:
1. normal start-up operation
(1) Before starting, the oil in the oil tank of the thin oil station has enough cleanliness and reaches ISO VG68 hydraulic oil meeting design requirements, the oil is injected to the upper limit position of the liquid level meter, and after the oil pump is started to enable the oil return pipe to be full of oil, the hydraulic oil is injected to the oil tank of the thin oil station to two thirds of the position of the liquid level meter;
(2) opening a first manual ball valve in the pipeline, and closing a second manual ball valve to form a passage for an oil supply system of the thin oil station; at the moment, the solenoid valve is in an open state because the high-level oil tank is in an oil-free state; when the liquid level of the high-level oil tank is high, the electromagnetic valve can be automatically closed;
(3) selecting and starting a No. 1 oil pump and a No. 2 oil pump according to working condition requirements, enabling oil to be supplied in two ways after the oil pumps are started and pressurized, enabling the oil to enter a high-level oil tank through an oil inlet pipe of the high-level oil tank, supplying the oil to a sliding bearing I and a sliding bearing II through the oil inlet pipe, and finally supplying the oil to an oil tank of a thin oil station through an oil return pipe;
(4) a first check valve and a second check valve are arranged in a lubricating system of the thin oil station to prevent control backflow;
(5) after the normal start of the steps is finished, the liquid level of the high-level oil tank gradually rises to an overflow port and flows back to the oil tank of the thin oil station in the running process; the lubricating function of the pump sliding bearing in the thin oil station is realized.
2. Normal stop operation
(1) After receiving a stop command, manually stopping the 1# oil pump and the 2# oil pump, or automatically stopping the 1# oil pump and the 2# oil pump after the main pump is normally stopped for 3 minutes;
(2) and closing the first manual ball valve, and stopping normally to finish the operation.
3. Oil supply operation in electrical accident state
(1) In the normal operation process of the main pump and the thin oil station lubricating system, a sudden electrical accident causes the main pump and the thin oil station lubricating system to stop, the pressure in a pipeline at the outlet of the main pump is high, the outlet valve of the main pump cannot be closed in time to cause the main pump to rotate reversely, the thin oil station lubricating system also stops working, the first sliding bearing and the second sliding bearing of the main pump must ensure sufficient oil quantity, otherwise, the first sliding bearing and the second sliding bearing and the bush are damaged or burnt;
(2) the utility model discloses, have the ability capacity fuel feeding under the electrical accident state, the function of a period of time of can automatic fuel feeding, full oil has been filled in the high-order oil tank when electrical failure, through the reasonable design of research, through the difference in height fuel feeding, can automatic downflow to slide bearing one and slide bearing two fuel feeding through high-order oil tank oil outlet pipe, effectively solve the pump in normal operating when sudden electrical accident leads to the pump to overturn because of the defect of lubricated fuel feeding mode lead to main pump slide bearing one and slide bearing two damage or burn out the difficult problem; and finally, the oil passes through an oil return pipe and reaches an oil tank of a thin oil station. The relevant data are shown in the following table:
(3) and closing the manual ball valve I and the manual ball valve II, and finishing the oil supply operation in the electric accident state.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a be applied to protection device of main pump slide bearing among water conveying and transferring system which characterized in that: a sliding bearing including a pump, and an oil supply device of the sliding bearing; the oil supply device comprises a thin oil station oil tank (6), an oil pump in the thin oil station oil tank, an oil inlet pipe (18) connected with the oil pump and the upper end of the sliding bearing, and an oil return pipe (13) connected with the thin oil station oil tank (6) and the lower end of the sliding bearing, wherein a manual ball valve I (8) and a check valve I (12) are installed on the oil inlet pipe (18); the device also comprises a high-level oil tank (5) arranged above the sliding bearing; the high-level oil tank (5) is communicated with the thin oil station oil tank (6) through the high-level oil tank oil inlet pipe (2), communicated with the oil inlet pipe (18) through the high-level oil tank oil outlet pipe (3), and communicated to the thin oil station oil tank (6) through the high-level oil tank overflow pipe (1).
2. The protection device applied to the main pump sliding bearing in the water delivery and diversion system is characterized in that the sliding bearing comprises a sliding bearing I (15) and a sliding bearing II (17), and the sliding bearing I (15) and the sliding bearing II (17) are respectively arranged at two ends of the pump (16) and are communicated with the oil inlet pipe (18) and the oil return pipe (13).
3. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that a 1# oil pump (7) and a 2# oil pump (9) are installed in the thin oil station oil tank (6), and the 1# oil pump (7) and the 2# oil pump (9) are connected with the oil inlet pipe (18) and the high-level oil tank oil inlet pipe (2).
4. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that the high-level oil tank overflow pipe (1), the high-level oil tank oil inlet pipe (2) and the high-level oil tank oil outlet pipe (3) are respectively arranged in sequence from top to bottom with a connecting port of the high-level oil tank (5).
5. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that a second check valve (10) is arranged on the oil outlet pipe (3) of the high-level oil tank; and the communication part of the oil outlet pipe (3) of the high-level oil tank and the oil inlet pipe (18) is positioned on the oil inlet pipe (18) between the first check valve (12) and the sliding bearing.
6. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that the electromagnetic valve (4) is additionally arranged on the high-level oil tank inlet pipe (2).
7. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that a liquid level float switch is installed in the high-level oil tank (5), and the liquid level float switch is controlled in an interlocking manner by the electromagnetic valve (4).
8. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that a manual ball valve II (11) is additionally arranged between the communication part of the high-level oil tank oil inlet pipe (2) and the oil inlet pipe (18) and the check valve I (12).
9. The protection device applied to the main pump sliding bearing in the water delivery and transfer system is characterized in that the high-level oil tank overflow pipe (1) and the oil return pipe (13) are both connected with the bottom of the thin oil station oil tank (6), and the high-level oil tank overflow pipe (1) and the oil return pipe (13) are not in cross connection and are connected with the thin oil station oil tank (6) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378524.8U CN213982946U (en) | 2020-10-23 | 2020-10-23 | Protection device applied to main pump sliding bearing in water delivery and transfer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378524.8U CN213982946U (en) | 2020-10-23 | 2020-10-23 | Protection device applied to main pump sliding bearing in water delivery and transfer system |
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| Publication Number | Publication Date |
|---|---|
| CN213982946U true CN213982946U (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022378524.8U Active CN213982946U (en) | 2020-10-23 | 2020-10-23 | Protection device applied to main pump sliding bearing in water delivery and transfer system |
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| CN (1) | CN213982946U (en) |
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- 2020-10-23 CN CN202022378524.8U patent/CN213982946U/en active Active
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