CN206694078U - A kind of system for preventing oil pump handoff procedure pressure from reducing - Google Patents
A kind of system for preventing oil pump handoff procedure pressure from reducing Download PDFInfo
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- CN206694078U CN206694078U CN201720551227.4U CN201720551227U CN206694078U CN 206694078 U CN206694078 U CN 206694078U CN 201720551227 U CN201720551227 U CN 201720551227U CN 206694078 U CN206694078 U CN 206694078U
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- oil
- pressure
- oil pump
- oil pipe
- handoff procedure
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Abstract
A kind of system for preventing oil pump handoff procedure pressure from reducing, it is related to a kind of system for preventing that pressure reduces in oil pump handoff procedure, replaced to solve small turbine in motor drag feed pump transformation project, system oil pressure reduces obvious when switching in operation in the presence of two high-pressure oil pumps after the completion of transformation, there is no enough oil pressure to ensure that small turbine main inlet throttle-stop valve is opened, main vapour valve is caused to be closed, steam feed pump trips, the problem of stable operation of unit can not be ensured, it includes fuel tank, No.1 oil pump, No. two oil pumps, pressure-reducing valve, accumulator, restricting orifice and stop valve；Two main oil pipe roads being arranged in parallel are disposed between fuel tank and pressure-reducing valve；One branch's oil pipe line is connected with small turbine system；Restricting orifice and accumulator are installed on another branch's oil pipe line, stop valve is connected with fuel tank, and valve is separately installed with two main oil pipe roads.The utility model is used for steam-turbine unit transformation project.
Description
Technical field
A kind of system for preventing that pressure reduces in oil pump handoff procedure is the utility model is related to, belongs to steam turbine field.
Background technology
In completing small turbine and replacing motor drag feed pump transformation project, steam turbine uses model N3-1.5, machine
The 4DG-9C type feed pumps that set feed pump is Shenyang Water Pump Factory's production are assembled, after the completion of transformation, operation is relatively steady.Small turbine
2 high-pressure oil pumps being equipped with, usually a fortune one is standby, but the problem is in the process of running：Two high-pressure oil pumps without
Method switches in operation.During such as No.1 pump operation, No.1 pump is stopped transport suddenly, and No. two pumps, which can join, to be opened, but system oil pressure reduction is bright
It is aobvious, ensure that small owner's porthole is opened without enough oil pressure, cause stop valve to be closed, small machine tripping operation, can not ensure that set steady is transported
OK.
Utility model content
The utility model is replaced in motor drag feed pump transformation project to solve small turbine, there is two after the completion of transformation
System oil pressure reduces obvious when platform high-pressure oil pump switches in operation, ensures that small turbine main inlet throttle-stop valve is opened without enough oil pressure,
Main vapour valve is caused to be closed, steam feed pump tripping operation, the problem of stable operation of unit can not be ensured, and then one kind is provided prevents oil
The system that pump handoff procedure pressure reduces.
The utility model adopts the technical scheme that to solve the above problems：One kind prevents the reduction of oil pump handoff procedure pressure
System, it includes fuel tank, No.1 oil pump, No. two oil pumps, pressure-reducing valve, accumulator, restricting orifice and stop valve；
Two main oil pipe roads being arranged in parallel are disposed between fuel tank and pressure-reducing valve, wherein being provided with a main oil pipe road
No.1 oil pump, No. two oil pumps are installed on another main oil pipe road；
Two the total output end in main oil pipe road is connected with Liang Tiao branches oil pipe line；
One branch's oil pipe line is connected with small turbine system, and pressure-reducing valve is provided with branch's oil pipe line；
Another branch's oil pipe line is connected with stop valve, and restricting orifice and storage are provided with another branch's oil pipe line
Energy device, stop valve are connected with fuel tank, and valve is separately installed with two main oil pipe roads.
The beneficial effects of the utility model are：The utility model oil pump pattern is gear oil pump, is declined by analyzing oil pressure
And rise curve, it is believed that exist subject matter be stop in No.1 oil pump, this process of No. two pump starts, oil pump establishes pressure
Power is relatively slow, it is necessary to 10 seconds or so.How the primary focus solved the problems, such as is in preventing from keeping oil pressure in pump handoff procedure
Stabilization.By research, determine to install an accumulator and throttling on fuel feed pump to stop valve hydraulic oil pipeline additional after pressure-reducing valve
Orifice plate.Can solve oil pressure reduces problem.After implementation, the problem of switching oil pump causes oil pressure to reduce, success are successfully solved
Eliminate and cause the hidden danger of small machine tripping operation because oil pump can not switch, ensure stable operation of unit.The utility model is used for steamer
Machine unit or heat supply.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Embodiment
The technical solution of the utility model is further described with reference to the accompanying drawings and detailed description
Illustrate referring to Fig. 1, it is a kind of prevent oil pump handoff procedure pressure reduce system, it include fuel tank 1, No.1 oil pump 2,
No. two oil pumps 3, pressure-reducing valve 4, accumulator 5, restricting orifice 6 and stop valve 7；
Two main oil pipe roads being arranged in parallel are disposed between fuel tank 1 and pressure-reducing valve 4, wherein being installed on a main oil pipe road
There is No.1 oil pump 2, No. two oil pumps 3 are installed on another main oil pipe road；
Two the total output end in main oil pipe road is connected with Liang Tiao branches oil pipe line；
One branch's oil pipe line is connected with small turbine system 8, and pressure-reducing valve 4 is provided with branch's oil pipe line；
Another branch's oil pipe line is connected with stop valve 7, and the He of restricting orifice 6 is provided with another branch's oil pipe line
Accumulator 5, stop valve 7 are connected with fuel tank 1, and valve is separately installed with two main oil pipe roads.
No.1 oil pump 2 and No. two fortune one of oil pump 3 one are standby.During operation, two oil pumps beat the oil of fuel tank 1 through main oil pipe road
Go out, into Liang Tiao branches oil pipe line, branch's oil pipe line is the relatively low lubricating oil of pressure through pressure-reducing valve 4, for small turbine system
The lubricating oil everywhere of system 8；Another branch's oil pipe line is hydraulic oil, the extension brake pressure oil as the stop valve 7 of small turbine.Referring to
Fig. 1 illustrates that, in order to further improve the oily utilization rate of fuel tank 1, a kind of system for preventing oil pump handoff procedure pressure from reducing is also
Including recirculating oil pipeline 9, recirculating oil pipeline 9 is arranged in parallel with two main oil pipe roads, the both ends of recirculating oil pipeline 9 respectively with
Fuel tank 1 is connected with two total output ends in main oil pipe road, and gate valve 10 is also equipped with the recirculating oil pipeline 9.Further, one
The system that kind prevents oil pump handoff procedure pressure and reduced also includes two No.1 stop valves 11, the master positioned at the both sides of No.1 oil pump 2
One No.1 stop valve 11 is respectively installed on oil pipe line.A kind of system for preventing oil pump handoff procedure pressure from reducing also includes two
No. two stop valves 12, another No. two stop valves 12 are respectively installed on the main oil pipe road of No. two both sides of oil pump 3.In order to ensure
The normal operation of pipeline oil transportation, check-valves 13 is additionally provided between No.1 oil pump 2 and one of No.1 stop valve 11, two
Number check-valves 13 is additionally provided between oil pump 3 and one of them No. two stop valve 12, stop valve is the gateway valve of oil pump, is used
In isolation oil pump, overhauled, gate valve is oil system bypass adjustment door, is conveniently adjusted system main-piping pressure.Check valve design mesh
Be oil pump stop when, prevent from exporting oily refluence.
Illustrate referring to Fig. 1, in order to ensure the normal operation of pipeline oil transportation, the caliber of pipeline road rationally match somebody with somebody
Put, the caliber on main oil pipe road is respectively corresponding to No.1 oil pump 2：The pipe external diameter on the main oil pipe road between No.1 oil pump 2 and fuel tank 1
For 73mm, thickness of pipe wall 4mm, the pipe external diameter on the main oil pipe road between No.1 oil pump 2 and total output end is 57mm, and thickness of pipe wall is
3.5mm.The caliber on main oil pipe road is respectively corresponding to No. two oil pumps 3：No. two stop valves 12 of neighbouring total output end and fuel tank 1 it
Between the pipe external diameter on main oil pipe road be 73mm, thickness of pipe wall 4mm, No. two stop valves 12 and total output end of neighbouring total output end it
Between the pipe external diameter on main oil pipe road be 57mm, thickness of pipe wall 3.5mm.Another branch of restricting orifice 6 and accumulator 5 is installed
The pipe external diameter of oil pipe line is 73mm, thickness of pipe wall 4mm.Preferably, the aperture of restricting orifice 6 is 8mm-12mm, is so designed not
Influence the Gua Zha of small turbine and beat the lock time.
Operation principle
It is normal when starting, hydraulic oil first pass through restricting orifice 6, full of accumulator 5, arrive stop valve 7 again, provide pressure for extension lock
Power oil；In oil pump handoff procedure, another branch's oil pipe line pressure reduces where system, the oil progress that at this moment accumulator 5 stores
Release, because of the throttling action of restricting orifice 6, the oil that allows accumulator 5 to store is most of to lead to stop valve 7, only at least partially through
Restricting orifice 6 is back to another branch's oil pipe line where restricting orifice 6.The oil that accumulator 5 stores can add to stop valve 7
Place, keep hanging brake pressure.So as to solve in two oil pump handoff procedures, can not ensure to hang brake pressure and cause small turbine
The problem of tripping operation.
The utility model is disclosed as above with preferable case study on implementation, but is not limited to the utility model, any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when the structure that can utilize the disclosure above
And technology contents make a little change or are modified to the equivalence enforcement case of equivalent variations, but it is every new without departing from this practicality
The content of type technical scheme, any simple modification made according to the technical essence of the utility model to above case study on implementation, etc.
With change and modification, still belong to technical solutions of the utility model scope.
Claims (7)
- A kind of 1. system for preventing oil pump handoff procedure pressure from reducing, it is characterised in that：It includes fuel tank (1), No.1 oil pump (2), No. two oil pumps (3), pressure-reducing valve (4), accumulator (5), restricting orifice (6) and stop valve (7)；Two main oil pipe roads being arranged in parallel are disposed between fuel tank (1) and pressure-reducing valve (4), wherein being installed on a main oil pipe road There is No.1 oil pump (2), No. two oil pumps (3) are installed on another main oil pipe road；Two the total output end in main oil pipe road is connected with Liang Tiao branches oil pipe line；One branch's oil pipe line is connected with small turbine system (8), and pressure-reducing valve (4) is provided with branch's oil pipe line；Another branch's oil pipe line is connected with stop valve (7), be provided with another branch's oil pipe line restricting orifice (6) and Accumulator (5), stop valve (7) are connected with fuel tank (1), and valve is separately installed with two main oil pipe roads.
- A kind of 2. system for preventing oil pump handoff procedure pressure from reducing according to claim 1, it is characterised in that：Described one kind The system that preventing oil pump handoff procedure pressure reduces also includes recirculating oil pipeline (9), recirculating oil pipeline (9) and two main oil Pipeline is arranged in parallel, and recirculating oil pipeline (9) both ends are connected with fuel tank (1) and two total output ends in main oil pipe road respectively, described No.1 gate valve (10) is also equipped with recirculating oil pipeline (9).
- A kind of 3. system for preventing oil pump handoff procedure pressure from reducing according to claim 2, it is characterised in that：Described one kind The system that preventing oil pump handoff procedure pressure reduces also includes two No.1 stop valves (11), positioned at No.1 oil pump (2) both sides One No.1 stop valve (11) is respectively installed on main oil pipe road.
- A kind of 4. system for preventing oil pump handoff procedure pressure from reducing according to claim 3, it is characterised in that：Described one kind The system that preventing oil pump handoff procedure pressure reduces also includes two No. two stop valves (12), positioned at No. two oil pump (3) both sides Another No. two stop valves (12) are respectively installed on main oil pipe road.
- A kind of 5. system for preventing oil pump handoff procedure pressure from reducing according to claim 4, it is characterised in that：No.1 oil pump (2) caliber on main oil pipe road is respectively corresponding to：The pipe external diameter on the main oil pipe road between No.1 oil pump (2) and fuel tank (1) is 73mm, thickness of pipe wall 4mm, the pipe external diameter on the main oil pipe road between No.1 oil pump (2) and total output end is 57mm, and thickness of pipe wall is 3.5mm。
- A kind of 6. system for preventing oil pump handoff procedure pressure from reducing according to claim 5, it is characterised in that：No. two oil pumps The caliber on main oil pipe road is respectively corresponding to 3：Main oil pipe between No. two stop valves (12) of neighbouring total output end and fuel tank (1) The pipe external diameter on road is 73mm, thickness of pipe wall 4mm, the main oil between No. two stop valves (12) of neighbouring total output end and total output end The pipe external diameter of pipeline is 57mm, thickness of pipe wall 3.5mm.
- 7. a kind of system for preventing oil pump handoff procedure pressure from reducing according to any one of claim 1 to 6 claim, its It is characterised by：The pipe external diameter for being provided with another branch's oil pipe line of restricting orifice (6) and accumulator (5) is 73mm, thickness of pipe wall For 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551227.4U CN206694078U (en) | 2017-05-16 | 2017-05-16 | A kind of system for preventing oil pump handoff procedure pressure from reducing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551227.4U CN206694078U (en) | 2017-05-16 | 2017-05-16 | A kind of system for preventing oil pump handoff procedure pressure from reducing |
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| CN206694078U true CN206694078U (en) | 2017-12-01 |
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| CN201720551227.4U Active CN206694078U (en) | 2017-05-16 | 2017-05-16 | A kind of system for preventing oil pump handoff procedure pressure from reducing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825576A (en) * | 2018-07-02 | 2018-11-16 | 长沙理工大学 | A kind of operation method of control pressurer system |
| CN110685952A (en) * | 2019-09-26 | 2020-01-14 | 沈阳鼓风机集团安装检修配件有限公司 | Lubricating oil system and instability adjusting method of compressor |
| CN113374547A (en) * | 2021-07-05 | 2021-09-10 | 国能(连江)港电有限公司 | Oil pump switching system and method |
-
2017
- 2017-05-16 CN CN201720551227.4U patent/CN206694078U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825576A (en) * | 2018-07-02 | 2018-11-16 | 长沙理工大学 | A kind of operation method of control pressurer system |
| CN110685952A (en) * | 2019-09-26 | 2020-01-14 | 沈阳鼓风机集团安装检修配件有限公司 | Lubricating oil system and instability adjusting method of compressor |
| CN110685952B (en) * | 2019-09-26 | 2021-11-26 | 沈阳鼓风机集团安装检修配件有限公司 | Lubricating oil system and instability adjusting method of compressor |
| CN113374547A (en) * | 2021-07-05 | 2021-09-10 | 国能(连江)港电有限公司 | Oil pump switching system and method |
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