CN104931248A - High-pressure waste energy recovery hydraulic turbine test stand and control method thereof - Google Patents
High-pressure waste energy recovery hydraulic turbine test stand and control method thereof Download PDFInfo
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- CN104931248A CN104931248A CN201510348685.3A CN201510348685A CN104931248A CN 104931248 A CN104931248 A CN 104931248A CN 201510348685 A CN201510348685 A CN 201510348685A CN 104931248 A CN104931248 A CN 104931248A
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Abstract
The invention discloses a high-pressure waste energy recovery hydraulic turbine test stand and control method thereof, which belongs to the field of measuring equipment. The relevant experiment platform and the control method thereof are provided for a high-pressure waste energy recovery hydraulic turbine. The test stand mainly comprises the hydraulic turbine, a generator, an inverter motor, a high-pressure piston pump, a relief valve, an electric control valve, a heating device, a turbine flow meter, a temperature sensor, a pressure transmitter, a pressure gauge, a pool and a torque tachometer. Compared with an ordinary test stand, the high-pressure waste energy recovery hydraulic turbine test stand has the advantages that automatic relevant component control and automatic information collection are realized; pressure, flow and other parameters are adjustable in a turbine running process; the working condition of the turbine can be efficiently recorded and the working characteristics are analyzed; and the research and the development of the novel high-pressure waste energy recovery hydraulic turbine are convenient.
Description
Technical field
The invention belongs to measuring equipment field, particularly a kind ofly provide test platform and the control method thereof of performance test for high pressure complementary energy reclaims hydraulic turbine.
Background technology
In today that world energy sources day is becoming tight, hydraulic turbine, as a kind of energy recycle device, to be progressively applied in commercial production and to achieve good producing effects, effectively having saved the energy, alleviated energy-intensive present situation.But for the energy regenerating hydraulic turbine of high-pressure medium, its development is also in the immature stage, performance study high pressure complementary energy being reclaimed to hydraulic turbine also will based on a large amount of experiments.
With conventional pump testing table, common turbine testing table differently, it is highly pressurised liquid that high pressure complementary energy reclaims the import working medium of hydraulic turbine.For industrial waste water, its pressure energy reaches a few MPa even tens MPas, and in order to obtain highly pressurised liquid, to increase merely inlet liquid liquid level unrealistic in an experiment, so need high-pressure pump to be fluid pressurization.In addition, plane bench does not have automatic control function, and its Parameter adjustable such as pressure, flow is poor, can easily not record the hydraulic turbine external characteristics parameter under different operating mode.
Summary of the invention
Study to reclaim hydraulic turbine to high pressure complementary energy better, hold variety classes hydraulic turbine energy regenerating characteristic separately better, the invention provides a kind of high pressure complementary energy and reclaim hydraulic turbine testing table and control method thereof, for research hydraulic turbine provides conveniently.This testing table is applied, will play a role in promoting for hydraulic turbine development.
In order to achieve the above object, technical scheme of the present invention is as follows:
A kind of high pressure complementary energy reclaims hydraulic turbine testing table, comprises hydraulic turbine inlet pipeline, hydraulic turbine, hydraulic turbine outlet pipeline, hydraulic turbine Blast Furnace Top Gas Recovery Turbine Unit (TRT), described hydraulic turbine inlet pipeline comprises variable-frequency motor, high-pressure plunger pump, electric control valve, heating arrangement, first turbo flow meter, described variable-frequency motor is connected with high-pressure plunger pump axle head by shaft coupling, high-pressure plunger pump suction line is passed in pond, high-pressure plunger pump pump discharge flange is connected with threeway A first end, second end of described threeway A connects the import of surplus valve, the three-terminal link electric control valve of threeway A, overflow water is disposed in pond by the outlet connecting pipe road of described surplus valve, described electric control valve is connected with heating arrangement, described heating arrangement is connected with first turbo flow meter one end, the described first turbo flow meter other end is connected with the first end of threeway B, second end of threeway B is connected with the water-in flange end of hydraulic turbine, described hydraulic turbine Blast Furnace Top Gas Recovery Turbine Unit (TRT) comprises generator, torque rotational speed meter, and described generator is connected with torque rotational speed meter one end by shaft coupling, and the torque rotational speed meter other end is connected with the axle head of hydraulic turbine by shaft coupling, three-terminal link first pressure unit (6) of threeway B, described hydraulic turbine outlet pipeline comprises threeway C, the second turbo flow meter, the second pressure unit, the first end of the discharge flange connecting tee C of described hydraulic turbine, threeway C second end is connected with the second pressure unit, one end of threeway C three-terminal link second turbo flow meter, the other end connecting line of the second turbo flow meter will go out saliva and be disposed in pond.
Further, the first tensimeter is provided with between second end of described threeway B and the water-in flange end of hydraulic turbine, three-terminal link first pressure unit of threeway B, be provided with temperature sensor between threeway B and the first turbo flow meter, between hydraulic turbine discharge flange and threeway C, be connected with the second tensimeter.
Further, the connected pipeline of the first pressure unit of described hydraulic turbine induction pipe terminal is provided with the first electric check valve, described high-pressure plunger pump outlet pipe section arranges the second electric check valve, is provided with the 3rd electric check valve between described second pressure unit and threeway C.
Further, described heating arrangement adopts Electric heating, and device internal duct is arranged to snakelike.
The technical scheme of control method of the present invention is:
A kind of high pressure complementary energy reclaims hydraulic turbine testing table control method, comprises step:
S1, before experimental bench system starts, ensure that high-pressure plunger pump exit second electric check valve is open mode, first electric check valve, 3rd electric check valve is closed condition, by PLC, frequency signal is passed to variable-frequency motor, variable-frequency motor starts, high-pressure plunger pump brings into operation, and water is pumped in the inlet pipeline of hydraulic turbine by pond, PLC is submitted to variable-frequency motor frequency signal simultaneously, variable-frequency motor again by ongoing frequency signal feedback to PLC control system, by control system, its frequency signal is gathered, thus the control realized its frequency,
S2, hydraulic turbine is imported and exported flow signal and is passed to PLC control system by the first turbo flow meter, the second turbo flow meter respectively, when by PLC, start signal being passed to the first electric check valve, the 3rd electric check valve after system run all right, stop valve is opened, thus the first pressure unit, the second pressure unit start to measure hydraulic turbine inlet and outlet pressure respectively, and by signal transmission to PLC control system;
S3, heating arrangement accepts the electrical heating signal of PLC control system, starts to heat tube fluid; And go out fluid temperature values by temperature sensor measurement, temperature value is converted to electrical signal transfer to PLC control system, when temperature reaches desired value, cuts off the electrical heating signal that PLC transmits;
S4, when hydraulic turbine runs, torque rotary speed value is converted into electrical signal transfer to PLC control system by torque rotational speed meter, thus completes the collection of torque rotary speed information;
S5, when operation troubles appears in high-pressure plunger pump, can pass to PLC control system by fault status signal, and PLC system is by making its operation suspension to the control of variable-frequency motor frequency signal.
Further, in described step S2, by PLC control system, hydraulic turbine inlet pipeline pressure, flow control are carried out to electric control valve, first turbo flow meter, the second turbo flow meter and the first pressure unit, the second pressure unit are delivered to the signal generation respective change of PLC control system, realize the data acquisition and controlling to pressure, flow signal in pipeline.
The present invention has following technique effect:
1) variable-frequency motor of the present invention can adjusting rotary speed, makes high-pressure plunger pump outlet parameter obtain respective change with frequency conversion motor speed; Pressure can be converted into electric signal and export by the pressure unit on hydraulic turbine inlet and outlet pipe, and traffic transformation is that electric signal exports by the turbo flow meter on inlet pipeline.Even state is on the impact of energy regenerating characteristic for the temperature considering high-pressure medium, and the heating arrangement that the present invention is arranged can heat liquid, and experiences fluid temperature change by set temperature sensor, temperature parameter is converted into electric signal and exports.
2) surplus valve has emergent pressure parameter value, and when high-pressure plunger pump discharge pressure is too high, partial high pressure water will be back in pond by surplus valve, outlet of plunger pump pressure be reduced, play a protective role to pipeline; Electric control valve controls flow, temperature, the pressure and other parameters of liquid in pipeline by the electric signal being received from autocontrol system, thus realizes robotization regulatory function; Described high-pressure plunger pump outlet pipe section arranges electric check valve, and electric check valve realizes the break-make of pipeline equally by receiving control system electric signal.
3) high pressure complementary energy of the present invention reclaims hydraulic turbine testing table, and it can control the parameter such as fluid pressure, flow effectively, gathers exactly and recording parameters information, compares plane bench and have certain novelty.In the heating arrangement of this platform, pipeline section is arranged to heat exchange that is snakelike thus that increase in pipe between water and electrical heating thermal source, the temperature the considering turbine entrance working medium even energy regenerating characteristic of phase to turbine has an impact, the heating arrangement that the present invention is arranged is that the research of above-mentioned impact is provided convenience, and ensures its bearing capacity.
4) in system, each equipment, instrument regulate by automatic control PLC system, correlation parameter information gathers by PLC control system, and this platform can study certain Single Medium parameter to the impact of hydraulic turbine performance in controllable variable ground.
Accompanying drawing explanation
Fig. 1 is that high pressure complementary energy reclaims hydraulic turbine experimental bench system conceptual scheme;
Fig. 2 is automatic control scheme figure.
In figure: 1-surplus valve, 2-electric control valve, 3-heating arrangement, 4-first turbo flow meter, 5-temperature sensor, 6-first pressure unit, 7-first electric check valve, 8-first tensimeter, 9-second pressure unit, 10-second turbo flow meter, 11-variable-frequency motor, 12-high-pressure plunger pump, 13-second electric check valve, 14-generator, 15-torque rotational speed meter, 16-pond, 17-hydraulic turbine, 18-second tensimeter, 19-the 3rd electric check valve.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Fig. 1 is that high pressure complementary energy of the present invention reclaims hydraulic turbine experimental bench system conceptual scheme.Comprise hydraulic turbine 17, generator 14, variable-frequency motor 11, high-pressure plunger pump 12, surplus valve 1, electric control valve 2, heating arrangement 3, turbo flow meter 4,10, temperature sensor 5, pressure unit 6,9, tensimeter 8,18, pond 16, torque rotational speed meter 15.
Its connected mode is: torque rotational speed meter 15 one end is connected with hydraulic turbine 17 axle by shaft coupling, and opposite side is connected with generator 14 by shaft coupling, and high-pressure plunger pump 12 axle head is connected by shaft coupling with variable-frequency motor 11.Hydraulic turbine 17 suction flange is connected with the first tensimeter 8 and threeway B, threeway B remains one of them end of two ends and connects the first pressure unit 6, the other end is connected with temperature sensor 5 in turn, first turbo flow meter 4, heating arrangement 3, electric control valve 2 forms the inlet pipeline of hydraulic turbine, hydraulic turbine 17 discharge flange place is connected to the second tensimeter 18 and threeway C equally, threeway C remains one of them end of two ends and is connected with the second pressure unit 9, the other end connects one end of the second turbo flow meter 10, the other end connecting line of the second turbo flow meter 10 will go out saliva and be disposed in pond 16.High-pressure plunger pump 12 suction line passes in pond, and pump discharge flange is connected with threeway A, and the other two ends of this threeway A wherein connect surplus valve 1 import in one end, and the other end connects electric control valve 2 thus is connected with described hydraulic turbine 17 inlet pipeline.Overflow water is disposed in pond 16 by surplus valve 1 outlet connecting pipe road.Hydraulic turbine 17 import and export pipeline, high-pressure plunger pump 12 outlet pipe section all arranges electric check valve.
Fig. 2 is automatic control scheme figure of the present invention.Illustrate the collection of each equipment and PLC control system signal in experimental bench system, transfer mode.It should be noted that, high-pressure plunger pump need be furnished with on-the-spot regulator cubicle, and regulator cubicle should be provided with start-stop button, long-range local switching grade for button.High-pressure plunger pump variable-frequency motor used realizes frequency adjustment by submitting of electric signal with feedback, and PLC control cabinet is carried out gathering to its start-stop signal, fault-signal and feeds back.Meanwhile, power distributing amount transmitter in PLC control cabinet, receives the transducer signal in regulator cubicle, realizes the data acquisition of the electric current to pump, voltage.In addition, PLC control cabinet by collecting pressure, temperature, flow, the torque rotary speed information in operating turbine process to the electrical signal collection of pressure unit, temperature sensor, turbo flow meter, torque rotational speed meter, and realizes the control such as adjustment, start and stop to electric control valve, heating arrangement, electric check valve by electrical signal transfer.
High pressure complementary energy of the present invention reclaims hydraulic turbine testing table control method, comprises the following steps:
1., before experimental bench system starts, ensure that high-pressure plunger pump exit second stop valve 13 is open mode, the first stop valve 7, the 3rd stop valve 19 are closed condition.By PLC, frequency signal is passed to variable-frequency motor 11, variable-frequency motor 11 starts, high-pressure plunger pump 12 brings into operation, and water is pumped in the inlet pipeline of hydraulic turbine 17 by pond 16, PLC is submitted to variable-frequency motor 11 frequency signal simultaneously, variable-frequency motor 11 again by ongoing frequency signal feedback to PLC control system, by control system, its frequency signal is gathered, thus realizes control to its frequency.
2. import and export flow signal is passed to PLC control system by turbine is imported and exported the first turbo flow meter 4, second turbo flow meter 10 respectively, when by PLC, start signal being passed to the first electric check valve 7, the 3rd electric check valve 19 after system run all right, stop valve 7,19 is opened, thus the first pressure unit 6, second pressure unit 9 starts to measure turbine inlet and outlet pressure respectively, and by signal transmission to PLC control system.Now carry out turbine inlet pipeline pressure, flow control by PLC control system to electric control valve 2, the first turbo flow meter 4, second turbo flow meter 10 and the first pressure unit 6, second pressure unit 9 are delivered to the signal generation respective change of PLC control system.Thus, the data acquisition and controlling to pressure, flow signal in pipeline is realized.
3. heating arrangement 3 accepts the electrical heating signal of PLC control system, starts to heat tube fluid.And measure fluid temperature values by temperature sensor 5, temperature value is converted to electrical signal transfer to PLC control system, when temperature reaches desired value, cuts off the electrical heating signal that PLC transmits.Thus, the data acquisition and controlling to fluid temperature signal in pipe is realized.
4. when operating turbine, torque rotary speed value is converted into electrical signal transfer to PLC control system by torque rotational speed meter 15, thus completes the collection of torque rotary speed information.
5., when operation troubles appears in high-pressure plunger pump 12, it will pass to PLC control system fault status signal, and PLC system is by making its operation suspension to the control of variable-frequency motor 11 frequency signal.
Above-mentioned control method can be monitored pipeline fluid properties, turbine overall operation parameter in real time, be conducive to a certain operation period flow is imported and exported to it, pressure, temperature, turbine external characteristics carry out entirety and hold, for the Analysis of Working Performance of turbine is provided convenience.
In addition, show through lot of experiments checking: the present invention, for the selection of high-pressure pump, pays the utmost attention to high-pressure plunger pump.Because its feature different from other high-pressure pump is that top hole pressure can not be determined by pump itself, but depending on pipe characteristic, the pipeline pressure characteristic that can effectively coordinate electric control valve to set up like this matches to make pressure parameter and turbine inlet pressure parameter.After it should be noted that high-pressure plunger pump reaches rated pressure, its pressure can not continue to raise, and due to the restriction of variable-frequency motor power and the structural strength of ram pump own, does not allow to use exceeding under this discharge pressure.
Finally, should understand above-mentioned example of executing and only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Claims (6)
1. high pressure complementary energy reclaims a hydraulic turbine testing table, it is characterized in that, comprises hydraulic turbine inlet pipeline, hydraulic turbine (17), hydraulic turbine outlet pipeline, hydraulic turbine Blast Furnace Top Gas Recovery Turbine Unit (TRT);
Described hydraulic turbine inlet pipeline comprises variable-frequency motor (11), high-pressure plunger pump (12), electric control valve (2), heating arrangement (3), first turbo flow meter (4), described variable-frequency motor (11) is connected with high-pressure plunger pump (12) axle head by shaft coupling, high-pressure plunger pump (12) suction line is passed in pond (16), high-pressure plunger pump (12) pump discharge flange is connected with threeway A first end, second end of described threeway A connects the import of surplus valve (1), the three-terminal link electric control valve (2) of threeway A, overflow water is disposed in pond (16) by the outlet connecting pipe road of described surplus valve (1), described electric control valve (2) is connected with heating arrangement (3), described heating arrangement (3) is connected with the first turbo flow meter (4) one end, described first turbo flow meter (4) other end is connected with the first end of threeway B, second end of threeway B is connected with the water-in flange end of hydraulic turbine (17), three-terminal link first pressure unit (6) of threeway B,
Described hydraulic turbine Blast Furnace Top Gas Recovery Turbine Unit (TRT) comprises generator (14), torque rotational speed meter (15), described generator (14) is connected with torque rotational speed meter (15) one end by shaft coupling, and torque rotational speed meter (15) other end is connected by the axle head of shaft coupling with hydraulic turbine (17);
Described hydraulic turbine outlet pipeline comprises threeway C, the second turbo flow meter (10), the second pressure unit (9), the first end of the discharge flange connecting tee C of described hydraulic turbine (17), threeway C second end is connected with the second pressure unit (9), one end of threeway C three-terminal link second turbo flow meter (10), the other end connecting line of the second turbo flow meter (10) will go out saliva and be disposed in pond (16).
2. high pressure complementary energy according to claim 1 reclaims hydraulic turbine testing table, it is characterized in that, the first tensimeter (8) is provided with between second end of described threeway B and the water-in flange end of hydraulic turbine (17), be provided with temperature sensor (5) between threeway B and the first turbo flow meter (4), between hydraulic turbine (17) discharge flange and threeway C, be connected with the second tensimeter (18).
3. high pressure complementary energy according to claim 1 reclaims hydraulic turbine testing table, it is characterized in that, the connected pipeline of first pressure unit (6) of described hydraulic turbine (17) induction pipe terminal is provided with the first electric check valve (7), described high-pressure plunger pump (12) outlet pipe section arranges the second electric check valve (13), is provided with the 3rd electric check valve (19) between described second pressure unit (9) and threeway C.
4. high pressure complementary energy according to claim 1 reclaims hydraulic turbine testing table, it is characterized in that, described heating arrangement (3) adopts Electric heating, and device internal duct is arranged to snakelike.
5. high pressure complementary energy reclaims a hydraulic turbine testing table control method, it is characterized in that, comprises step:
S1, before experimental bench system starts, ensure that high-pressure plunger pump (12) exit second electric check valve (13) is open mode, first electric check valve (7), 3rd electric check valve (19) is closed condition, by PLC, frequency signal is passed to variable-frequency motor (11), variable-frequency motor (11) starts, high-pressure plunger pump (12) brings into operation, and water is pumped in the inlet pipeline of hydraulic turbine (17) by pond (16), PLC is submitted to variable-frequency motor (11) frequency signal simultaneously, variable-frequency motor (11) again by ongoing frequency signal feedback to PLC control system, by control system, its frequency signal is gathered, thus the control realized its frequency,
S2, hydraulic turbine is imported and exported flow signal and is passed to PLC control system by the first turbo flow meter (4), the second turbo flow meter (10) respectively, when by PLC, start signal being passed to the first electric check valve (7), the 3rd electric check valve (19) after system run all right, stop valve is opened, thus the first pressure unit (6), the second pressure unit (9) start to measure hydraulic turbine inlet and outlet pressure respectively, and by signal transmission to PLC control system;
S3, heating arrangement (3) accepts the electrical heating signal of PLC control system, starts to heat tube fluid; And measure fluid temperature values by temperature sensor (5), temperature value is converted to electrical signal transfer to PLC control system, when temperature reaches desired value, cuts off the electrical heating signal that PLC transmits;
S4, when hydraulic turbine runs, torque rotary speed value is converted into electrical signal transfer to PLC control system by torque rotational speed meter (15), thus completes the collection of torque rotary speed information;
S5, when operation troubles appears in high-pressure plunger pump (12), can pass to PLC control system by fault status signal, and PLC system is by making its operation suspension to the control of variable-frequency motor (11) frequency signal.
6. high pressure complementary energy according to claim 5 reclaims hydraulic turbine testing table control method, it is characterized in that, in described step S2, by PLC control system, hydraulic turbine inlet pipeline pressure, flow control are carried out to electric control valve (2), first turbo flow meter (4), the second turbo flow meter (10) and the first pressure unit (6), the second pressure unit (9) are delivered to the signal generation respective change of PLC control system, realize the data acquisition and controlling to pressure, flow signal in pipeline.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107035968A (en) * | 2017-03-29 | 2017-08-11 | 哈尔滨工程大学 | A kind of multi-functional liquid supply system that Mining Test device is prepared for combustible ice |
| CN107044911A (en) * | 2017-05-16 | 2017-08-15 | 大连深蓝泵业有限公司 | Low-temperature test system and liquefied natural gas decompression operating mode LNG hydraulic turbine low-temperature test methods |
| CN108318271A (en) * | 2018-03-29 | 2018-07-24 | 榆林学院 | A kind of experimental provision of overbottom pressure energy regenerating and compressed-air energy storage |
| CN108443710A (en) * | 2018-03-26 | 2018-08-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Natural gas pressure regulating heating system and pressure regulating heating method |
| CN110641852A (en) * | 2019-08-19 | 2020-01-03 | 煤炭科学技术研究院有限公司 | Device and method for preventing test liquid with ultra-large flow from splashing and recovering test liquid |
| CN111059065A (en) * | 2019-12-16 | 2020-04-24 | 江苏大学 | Dynamic performance testing device for energy recovery all-in-one machine of seawater desalination pump |
| CN114526936A (en) * | 2022-02-21 | 2022-05-24 | 西南石油大学 | Drill column full-rotation hydraulic controller test bench |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107044911A (en) * | 2017-05-16 | 2017-08-15 | 大连深蓝泵业有限公司 | Low-temperature test system and liquefied natural gas decompression operating mode LNG hydraulic turbine low-temperature test methods |
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| CN108443710B (en) * | 2018-03-26 | 2020-02-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Natural gas pressure-regulating heating system and pressure-regulating heating method |
| CN108318271A (en) * | 2018-03-29 | 2018-07-24 | 榆林学院 | A kind of experimental provision of overbottom pressure energy regenerating and compressed-air energy storage |
| CN108318271B (en) * | 2018-03-29 | 2023-10-20 | 榆林学院 | Experimental device for residual pressure energy recovery and compressed air energy storage |
| CN110641852A (en) * | 2019-08-19 | 2020-01-03 | 煤炭科学技术研究院有限公司 | Device and method for preventing test liquid with ultra-large flow from splashing and recovering test liquid |
| CN111059065A (en) * | 2019-12-16 | 2020-04-24 | 江苏大学 | Dynamic performance testing device for energy recovery all-in-one machine of seawater desalination pump |
| CN114526936A (en) * | 2022-02-21 | 2022-05-24 | 西南石油大学 | Drill column full-rotation hydraulic controller test bench |
| CN114526936B (en) * | 2022-02-21 | 2023-10-10 | 西南石油大学 | Test bed for drill string full-rotation hydraulic controller |
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