CN109578295B - Quick start test system of vertical direct current oil pump - Google Patents
Quick start test system of vertical direct current oil pump Download PDFInfo
- Publication number
- CN109578295B CN109578295B CN201811444187.9A CN201811444187A CN109578295B CN 109578295 B CN109578295 B CN 109578295B CN 201811444187 A CN201811444187 A CN 201811444187A CN 109578295 B CN109578295 B CN 109578295B
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- China
- Prior art keywords
- motor
- oil pump
- rotating speed
- resistor
- oil tank
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- 230000004044 response Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 37
- 238000010586 diagram Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a quick start test system of a vertical direct-current oil pump, which is characterized in that: the device comprises an oil tank, a centrifugal pump, a motor, a check valve, a flowmeter, a throttle valve, a data acquisition cabinet and a power cabinet; according to the invention, the starting state is judged by detecting the rotating speed of the oil pump motor, the time from the armature to the establishment of more than 95% of stable rotating speed is defined as the starting time, and the starting time of the direct-current oil pump is controlled within 1.2 seconds according to foreign design experience, so that the pressure change requirement in the starting and switching processes of the oil pump in the accident working condition can be met; the invention provides a condition for judging whether the motor is started or not by using a stable rotating speed reaching more than 95%. The slope of a stable rotating speed curve obtained by electricity from the armature is larger than 95%, and the rotating speed rate from 95% to the rated rotating speed is flatter; the oil pump motor model selection can be guided more scientifically through test data.
Description
Technical Field
The invention relates to the field of steam turbines, in particular to a quick start test system of a vertical direct-current oil pump.
Background
The novel turbine unit lubricating oil supply system adopts a layout mode that a main oil pump is dragged by a 2X 100% alternating current motor (which is mutually standby), and a critical oil pump is dragged by a direct current motor. Because the main oil pump of lubricating oil is directly dragged by the motor, and the long-term operation and the quick operation during the fault switching are required, the requirements on the starting performance and the stable operation of the motor are extremely high.
The prior art can only analyze whether the oil pump motor meets the requirement of quick start through pressure change, and can not measure the time of quick start of the lubricating oil supply pump.
Therefore, in order to solve the above problems, a new technical solution is provided.
Disclosure of Invention
The invention aims to solve the technical problem of providing a quick start test system of a vertical direct-current oil pump, which can solve the problem that the prior art can only analyze whether an oil pump motor meets quick start or not through pressure change and cannot measure the quick start time of a lubricating oil supply pump.
In order to solve the technical problems, the technical scheme of the invention is as follows: a quick start test system of a vertical direct-current oil pump is characterized in that: the device comprises an oil tank, a centrifugal pump, a motor, a check valve, a flowmeter, a throttle valve, a data acquisition cabinet and a power cabinet;
the centrifugal pump is arranged in the oil tank through an oil pipe and is driven by the motor; the output end of the centrifugal pump is sequentially connected with a check valve, a flowmeter and a throttle valve in series through a pipeline, the output end of the throttle valve extends into the oil tank, and the output end of the throttle valve extending into the oil tank is separated from the output end of the motor extending into the oil tank in the oil tank through a baffle;
the data acquisition cabinet and the power cabinet are connected to the motor through wires, and a pressure gauge is arranged between the check valve and the flowmeter; the tail end of the motor is provided with a rotation speed measuring sensor, and a shunt bus of the power cabinet is provided with a current sensor; the armature circuit in the power cabinet is provided with a series resistance module, the series resistance module comprises a primary resistor, a secondary resistor and a tertiary resistor, and the primary resistor, the secondary resistor and the tertiary resistor can be switched with each other.
Further, the response time of the data acquisition cabinet, the rotating speed measuring sensor and the current sensor is at least 10ms.
Further, the time from the armature to the oil pump establishing 95% stable rotation speed is less than or equal to 1.2s.
Further, the impact current is less than or equal to 5 times of rated current.
The invention has the advantages that:
1) According to the invention, the starting state is judged by detecting the rotating speed of the oil pump motor, the time from the armature to the establishment of the stable rotating speed of more than 95% is defined as the starting time, and the starting time of the direct-current oil pump is controlled within 1.2 seconds according to foreign design experience, so that the pressure change requirement in the starting and switching processes of the oil pump in the accident working condition can be met.
2) The invention provides a condition for judging whether the motor is started or not by using a stable rotating speed reaching more than 95%. The slope of a stable rotating speed curve obtained by electricity from the armature is larger than 95%, and the rotating speed rate from 95% to the rated rotating speed is flatter; the oil pump motor model selection can be guided more scientifically through test data.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a quick start test system of a vertical dc oil pump according to the present invention.
Fig. 2 is a diagram of a primary string resistor start control of an oil pump of a quick start test system of a vertical dc oil pump according to the present invention.
Fig. 3 is a diagram of the oil pump secondary series resistance start control of the quick start test system of a vertical dc oil pump according to the present invention.
Fig. 4 is a diagram of three-stage series resistance starting control of the oil pump of the quick start test system of the vertical direct-current oil pump.
As shown in the figure: SB1: a stop button; SB2: a start button; KM1: a main contactor; KM2: a stage 1 resistor cut-off contactor; KM3: a 2-stage resistor cut-off contactor; KT1: a level 1 resistor cut-off time relay; KT2: 2-stage resistor cut-off time relay; r1: a stage 1 resistor; a: a current sensor.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
The quick start test system of the vertical direct-current oil pump as shown in fig. 1 to 4 comprises an oil tank 1, a centrifugal pump 2, a motor 3, a check valve 4, a flowmeter 5, a throttle valve 6, a data acquisition cabinet 7 and a power cabinet 8.
The centrifugal pump 2 is arranged in the oil tank 1 through an oil pipe, and the centrifugal pump 2 is driven by the motor 3; the output end of the centrifugal pump 2 is sequentially connected with a check valve 4, a flowmeter 5 and a throttle valve 6 in series through a pipeline, the output end of the throttle valve 6 extends into the oil tank 1, and the output end of the throttle valve 6 extending into the oil tank 1 is separated from the output end of the motor 3 extending into the oil tank 1 in the oil tank through a partition plate.
The data acquisition cabinet 7 and the power cabinet 8 are connected to the motor 3 through wires, and a pressure gauge is arranged between the check valve 4 and the flowmeter 5; a rotation speed measuring sensor is arranged at the tail end of the motor 3, and a current sensor is arranged on a shunt bus of the power cabinet 8; the armature circuit in the power cabinet is provided with a series resistance module, the series resistance module comprises a primary resistor, a secondary resistor and a tertiary resistor, and the primary resistor, the secondary resistor and the tertiary resistor can be switched with each other.
The response time of the data acquisition cabinet, the rotation speed measuring sensor and the current sensor is at least 10ms.
The time from the armature electricity to the oil pump establishing 95% stable rotation speed is less than or equal to 1.2s.
The impact current is less than or equal to 5 times of rated current.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A quick start test system of vertical direct current oil pump, its characterized in that: the device comprises an oil tank, a centrifugal pump, a motor, a check valve, a flowmeter, a throttle valve, a data acquisition cabinet and a power cabinet;
the centrifugal pump is arranged in the oil tank through an oil pipe and is driven by the motor; the output end of the centrifugal pump is sequentially connected with a check valve, a flowmeter and a throttle valve in series through a pipeline, the output end of the throttle valve extends into the oil tank, and the output end of the throttle valve extending into the oil tank is separated from the output end of the motor extending into the oil tank in the oil tank through a baffle;
The data acquisition cabinet and the power cabinet are connected to the motor through wires, and a pressure gauge is arranged between the check valve and the flowmeter; the tail end of the motor is provided with a rotation speed measuring sensor, and a shunt bus of the power cabinet is provided with a current sensor; the armature circuit in the power cabinet is provided with a series resistance module, the series resistance module comprises a primary resistor, a secondary resistor and a tertiary resistor, and the primary resistor, the secondary resistor and the tertiary resistor can be switched with each other;
Judging a starting state by detecting the rotation speed of the motor of the oil pump, defining the time from when the armature is electrified to when the stable rotation speed of more than 95% is established as starting time, and taking the stable rotation speed of more than 95% as a condition for judging whether the motor is started or not;
when the time from the armature power to the oil pump establishing 95% stable rotation speed is less than or equal to 1.2 s, judging that the motor of the oil pump meets the requirement of quick start.
2. The rapid start test system for a vertical direct current oil pump of claim 1, wherein: the response time of the data acquisition cabinet, the rotating speed measuring sensor and the current sensor is at least 10ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444187.9A CN109578295B (en) | 2018-11-29 | 2018-11-29 | Quick start test system of vertical direct current oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444187.9A CN109578295B (en) | 2018-11-29 | 2018-11-29 | Quick start test system of vertical direct current oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578295A CN109578295A (en) | 2019-04-05 |
| CN109578295B true CN109578295B (en) | 2024-06-11 |
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ID=65925690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811444187.9A Active CN109578295B (en) | 2018-11-29 | 2018-11-29 | Quick start test system of vertical direct current oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578295B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU27846U1 (en) * | 2002-08-26 | 2003-02-20 | Общество с ограниченной ответственностью "АЛНАС - Плюс" | TEST STAND FOR SUBMERSIBLE ELECTRIC CENTRIFUGAL PUMPS |
| CN104888396A (en) * | 2015-05-20 | 2015-09-09 | 重庆大学 | Method for detecting transient faults of fire pump in quick starting process |
| CN106121994A (en) * | 2016-08-29 | 2016-11-16 | 浙江华天机械有限公司 | A kind of lubricant pump test-bed |
| CN206099821U (en) * | 2016-06-24 | 2017-04-12 | 江苏江海润液设备有限公司 | Induction motor soft starter system for straight oil flow pump |
| CN108181109A (en) * | 2017-12-30 | 2018-06-19 | 天津曼科科技有限公司 | A kind of oil pump performance tests system |
| CN209539582U (en) * | 2018-11-29 | 2019-10-25 | 江苏江海润液设备有限公司 | A kind of quick start test macro of vertical DC oil pump |
-
2018
- 2018-11-29 CN CN201811444187.9A patent/CN109578295B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU27846U1 (en) * | 2002-08-26 | 2003-02-20 | Общество с ограниченной ответственностью "АЛНАС - Плюс" | TEST STAND FOR SUBMERSIBLE ELECTRIC CENTRIFUGAL PUMPS |
| CN104888396A (en) * | 2015-05-20 | 2015-09-09 | 重庆大学 | Method for detecting transient faults of fire pump in quick starting process |
| CN206099821U (en) * | 2016-06-24 | 2017-04-12 | 江苏江海润液设备有限公司 | Induction motor soft starter system for straight oil flow pump |
| CN106121994A (en) * | 2016-08-29 | 2016-11-16 | 浙江华天机械有限公司 | A kind of lubricant pump test-bed |
| CN108181109A (en) * | 2017-12-30 | 2018-06-19 | 天津曼科科技有限公司 | A kind of oil pump performance tests system |
| CN209539582U (en) * | 2018-11-29 | 2019-10-25 | 江苏江海润液设备有限公司 | A kind of quick start test macro of vertical DC oil pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578295A (en) | 2019-04-05 |
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