CN103644037A - One-button start control system and method for large gas generator set - Google Patents
One-button start control system and method for large gas generator set Download PDFInfo
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- CN103644037A CN103644037A CN201310738894.XA CN201310738894A CN103644037A CN 103644037 A CN103644037 A CN 103644037A CN 201310738894 A CN201310738894 A CN 201310738894A CN 103644037 A CN103644037 A CN 103644037A
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Abstract
The invention relates to the field of control systems of large gas generator sets and in particular relates to a one-button start control system and method for a large gas generator set. The system comprises a one-button start core control unit, wherein the one-button start control unit is connected with a gas electric valve, an air-fuel ratio control unit, a starting motor, an engine control unit and a generator control unit; a gas supply pipeline is connected with the air-fuel ratio control unit through the gas electric valve; the air-fuel ratio control unit is connected with the engine control unit; the engine control unit is connected with the generator control unit; the starting motor is connected with the engine control unit. A control function is realized by adopting electric components, multi-step manual operation is replaced, the system is effective and intuitive to use, good in one-button start effect, high in reliability, low in cost and wide in applicability, components such as an electronic power meter and a thermocouple serve as detection elements, and maintenance is basically not needed.
Description
Technical field
The present invention relates to a kind of large-scale control system of gas generator set field, particularly a kind of large-scale fuel gas generation unit one key starts control system and method.
Background technique
Large-scale fuel gas generation unit is because rotating speed is low, combustion gas and air mixed proportion (hereinafter to be referred as air fuel ratio) are controlled complicated, detect generator excitation and the same period high, the grid-connected rear combustion gas generator set stability of grid-connected difficulty and control the impact of the factors such as difficulty is large, it is puzzlement developer's technical barrier that a key starts always.Large-scale fuel gas generation unit is by gas inlet, control unit of engine, and air fuel ratio control unit, generator control unit, a key starts the control sections such as key control unit and forms.Because air fuel ratio control unit is subject to the impact of sensor technology, in initial start stage, cannot adjust suitable air fuel ratio, so that become, hinder the maximum technological difficulties that a key starts control.The start-up course of large-scale fuel gas generation unit mostly was artificial multi-step startup in the past, was at starting motor, to drag motor to reach after startup rotating speed, and by manually opening gas control valve, the opening procedure of gas valve need to have certain skill.As much as possible slowly open, object is to control combustion gas inlet, manually finds suitable startup air fuel ratio.Because gas valve enters flow by little to controlling greatly gradually combustion gas, so always there will be the opportunity that reaches ideal air-fuel ratio in the process of slowly opening at valve, when ideal air-fuel ratio occurs, unit just starts successfully.After unit starting success, air fuel ratio control unit plays a role gradually, along with the variation of the rising of rotating speed and the increase of power and combustion gas methane concentration, adjusts dynamically combustion gas inlet.Unit starting successfully needs need to be by special messenger's operate generator control unit when grid-connected, its process is that field current is opened and suitably regulated in excitation unit, make generator output voltage reach rating value, when generator set output voltage reaches rating value, open same period detection unit and carry out grid-connectedly, grid-connected successful rear engine operator will carry out loading adjustment to motor.Said process needs motor to control personnel and grid-connected operator's close fit, to reach fuel gas generation unit from starting to the process of generating electricity by way of merging two or more grid systems, which major defect is to have larger manpower waste, and the start-up course endurance is long, is difficult to increase work efficiency.
Summary of the invention
According to above the deficiencies in the prior art, the technical problem to be solved in the present invention is: provide a kind of and can overcome above-mentioned defect, large-scale fuel gas generation unit one key easy to use, fast response time starts control system and controlling method.
The technical solution adopted for the present invention to solve the technical problems is:
Described large-scale fuel gas generation unit one key starts control system, comprise that a key starts key control unit, one key starts key control unit and connects electric valve for gas burner, air fuel ratio control unit, starting motor, the control unit of motor and the control unit of generator, gas supply pipe road connects air fuel ratio control unit by electric valve for gas burner, the control unit of air fuel ratio control unit connecting engine, the control unit of motor connects the control unit of generator, the control unit of starting motor connecting engine.
On the fuel gas supply pipeline of described large-scale fuel gas generation unit one key startup control system, be provided with electric valve for gas burner, auxiliary fuel supply-system, on generator set air inlet pipeline, increase electric valve for gas burner, make the accurate electronic control of combustion gas inlet, substituted the manual operation of multi-step, use effective reliability high, substantially do not need to safeguard, cheap, applicability is wide, simultaneously, generator control system increases grid-connected signal feed back output, for a key, starts key control unit acquisition applications.
Preferred further, motor and starting motor gear are connected with a joggle, and motor is connected with generator coaxle.
Preferred further, on motor, be provided with temperature-measuring element and power detection device.
Preferred further, temperature-measuring element adopts K type thermocouple, and power detection device adopts electronic power meter, and K type thermocouple is connected a key and starts key control unit with electronic power meter.Engine body is equipped with the warm temperature-measuring element K type thermocouple of the row of measurement, power detecting unit is electronic power meter, mode with RS485 communication is uploaded to a key startup key control unit by power data, other Operational Limitss of motor are gathered and are sent to a key and start key control unit by correlate meter, for a key startup key control unit with reference to.
Preferred further, electronic power meter and temperature detection device are set on generator, electronic power meter is connected a key and starts key control unit with temperature detection device.Generating set power test section adopts electronic power meter, so that a key starts key control unit, detects generator set output power, and the outlet pipe place of generator set connects temperature detection device, starts key control unit gather motor row temperature for a key.
Preferred further, the excitation enable switch of the control unit of generator and detect control switch the same period and adopt relay.Generator control unit excitation enable switch upgrades to Control by hand switch, to better carry out a key startup key control unit, sends excitation actuating signal; Generator control unit detects control switch the same period by the hand switch Control of upgrading, and effectively carries out grid-connected signal.The excitation control relay of generator control unit starts key control unit with simultaneous interconnecting relay and a key and is connected, and carries out excitation and starts and simultaneous interconnecting order, and a key starts key control unit and connects generator control unit, gathers grid-connected state signal.
Preferred further, a key starts key control unit and is comprised of programmable controller and liquid crystal touch screen.Easy to operate, applicability is wide.
Large-scale fuel gas generation unit one key starts a controlling method, comprises the following steps:
Step 1: press start button, a key starts key control unit and controls starting motor unlatching, and starting motor drives engine rotation;
Step 2 a: key starts key control unit its rotating speed is detected, after reaching startup rotating speed, a key starts key control unit will control electric valve for gas burner unlatching, and startup rotating speed is 120-130r/min;
Step 3: detect the rotating speed of motor in the process of carrying out step 2, when the rotating speed of motor is when starting rotating speed and be elevated to idling suddenly, electric valve for gas burner no longer increases aperture simultaneously, engine start success, idling is 360r/min;
Step 4: after engine start success, starting motor stops, and remains idle according to set time, and dead time is 10min;
Step 5: after the idle time finishes, a key start key control unit will send instruction make motor by idle to rated speed, rated speed is 600r/min;
Step 6: motor reaches after rated speed, one key starts key control unit and by sensor, water temperature, oil temperature and lubricating oil pressure is detected, after detected parameters is up to standard, by sending the control unit of instruction to generator, carry out excitation startup, 40 ℃ of water temperature ﹥, 45 ℃ of oil temperature ﹥, lubricating oil pressure ﹥ 0.25MP;
Step 7: in carrying out the process of step 6, one key starts key control unit the output voltage of generator is detected, the output voltage of generator reaches after requirement, send grid-connected instruction, the control unit of generator will be opened same period detection unit and carry out grid-connected after receiving grid-connected instruction, after being connected to the grid successfully, generator control unit will feed back grid-connected one-tenth function signal to a key startup key control unit, and output voltage is 400V;
Step 8 a: key starts after key control unit is received grid-connected one-tenth function signal will enter loading mode, electric valve for gas burner is all opened, the inlet of combustion gas is all controlled by air fuel ratio control unit, monitor the stability of power and row's temperature of each cylinder of motor simultaneously, when engine power fluctuation or row's temperature abnormality, air fuel ratio control unit is by suitable adjusting air-fuel ratio, until power is loaded into setting value, set value of the power is 500KW.
The beneficial effect that the present invention has is:
Described large-scale fuel gas generation unit one key starts control system and controlling method is to carry out automatization simulation according to traditional starting method and step, thereby replace relevant manual operation, realized large-scale fuel gas generation unit and pressed start button and can realize engine start to generating electricity by way of merging two or more grid systems and the full process automatization of grid-connected rear set steady work is controlled.The present invention adopts electric elements to realize and controls function, has substituted the manual operation of multi-step, uses effective, directly perceived, and a key starts respond well, and the elements such as electronic power meter and thermocouple of take are Detecting element, and reliability is high, substantially do not need to safeguard, cheap, applicability is wide.
Accompanying drawing explanation
Fig. 1 is systematic square frame schematic diagram of the present invention;
Fig. 2 is method flow diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
As shown in Figure 1, large-scale fuel gas generation unit one key of the present invention starts control system, comprise that a key starts key control unit, one key starts key control unit and connects electric valve for gas burner, air fuel ratio control unit, starting motor, the control unit of motor and the control unit of generator, gas supply pipe road connects air fuel ratio control unit by electric valve for gas burner, the control unit of air fuel ratio control unit connecting engine, the control unit of motor connects the control unit of generator, the control unit of starting motor connecting engine.
Wherein, motor and starting motor gear are connected with a joggle, and motor is connected with generator coaxle.On motor, be provided with temperature-measuring element and power detection device, temperature-measuring element adopts K type thermocouple, and power detection device adopts electronic power meter, and K type thermocouple is connected a key and starts key control unit with electronic power meter.Electronic power meter and temperature detection device are set on generator, and electronic power meter is connected a key and starts key control unit with temperature detection device, the excitation enable switch of the control unit of generator and detect control switch the same period and adopt relay.One key starts key control unit and is comprised of programmable controller and liquid crystal touch screen.
As shown in Figure 2, a kind of large-scale fuel gas generation unit one key of the present invention starts controlling method, comprises the following steps:
Step 1: press start button, a key starts key control unit and controls starting motor unlatching, and starting motor drives engine rotation;
Step 2 a: key starts key control unit its rotating speed is detected, after reaching startup rotating speed, a key starts key control unit will control electric valve for gas burner unlatching, and startup rotating speed is 120-130r/min;
Step 3: detect the rotating speed of motor in the process of carrying out step 2, when the rotating speed of motor is when starting rotating speed and be elevated to idling suddenly, electric valve for gas burner no longer increases aperture simultaneously, engine start success, idling is 360r/min;
Step 4: after engine start success, starting motor stops, and remains idle according to set time, and dead time is 10min;
Step 5: after the idle time finishes, a key start key control unit will send instruction make motor by idle to rated speed, rated speed is 600r/min;
Step 6: motor reaches after rated speed, one key starts key control unit and by sensor, water temperature, oil temperature and lubricating oil pressure is detected, after detected parameters is up to standard, by sending the control unit of instruction to generator, carry out excitation startup, 40 ℃ of water temperature ﹥, 45 ℃ of oil temperature ﹥, lubricating oil pressure ﹥ 0.25MP;
Step 7: in carrying out the process of step 6, one key starts key control unit the output voltage of generator is detected, the output voltage of generator reaches after requirement, send grid-connected instruction, the control unit of generator will be opened same period detection unit and carry out grid-connected after receiving grid-connected instruction, after being connected to the grid successfully, generator control unit will feed back grid-connected one-tenth function signal to a key startup key control unit, and output voltage is 400V;
Step 8 a: key starts after key control unit is received grid-connected one-tenth function signal will enter loading mode, electric valve for gas burner is all opened, the inlet of combustion gas is all controlled by air fuel ratio control unit, monitor the stability of power and row's temperature of each cylinder of motor simultaneously, when engine power fluctuation or row's temperature abnormality, air fuel ratio control unit is by suitable adjusting air-fuel ratio, until power is loaded into setting value, set value of the power is 500KW.After above-mentioned steps completes, a key startup system completes a key start-up performance, in key startup key control unit on-line monitoring power condition and the warm situation of row in service of unit, automatically carries out at any time sky combustion and controls.
The present invention's one key starts key control unit and consists of PLC, according to programming, requires intelligent control one key start-up course, easy to use, and Perfect in shape and function is reliable.
Claims (8)
1. one kind large-scale fuel gas generation unit one key starts control system, it is characterized in that: comprise that a key starts key control unit, one key starts key control unit and connects electric valve for gas burner, air fuel ratio control unit, starting motor, the control unit of motor and the control unit of generator, gas supply pipe road connects air fuel ratio control unit by electric valve for gas burner, the control unit of air fuel ratio control unit connecting engine, the control unit of motor connects the control unit of generator, the control unit of starting motor connecting engine.
2. large-scale fuel gas generation unit one key according to claim 1 starts control system, it is characterized in that: described motor and starting motor gear are connected with a joggle, and motor is connected with generator coaxle.
3. large-scale fuel gas generation unit one key according to claim 1 starts control system, it is characterized in that: on described motor, be provided with temperature-measuring element and power detection device.
4. large-scale fuel gas generation unit one key according to claim 3 starts control system, it is characterized in that: described temperature-measuring element adopts K type thermocouple, power detection device adopts electronic power meter, and K type thermocouple is connected a key and starts key control unit with electronic power meter.
5. large-scale fuel gas generation unit one key according to claim 1 starts control system, it is characterized in that: electronic power meter and temperature detection device are set on described generator, and electronic power meter is connected a key and starts key control unit with temperature detection device.
6. large-scale fuel gas generation unit according to claim 1 one key starts control system, it is characterized in that: the excitation enable switch of the control unit of described generator and detect control switch the same period and adopt relay.
7. large-scale fuel gas generation unit one key according to claim 1 starts control system, it is characterized in that: a described key starts key control unit and is comprised of programmable controller and liquid crystal touch screen.
8. large-scale fuel gas generation unit one key starts a controlling method, it is characterized in that comprising the following steps:
Step 1: press start button, a key starts key control unit and controls starting motor unlatching, and starting motor drives engine rotation;
Step 2 a: key starts key control unit its rotating speed is detected, after reaching startup rotating speed, a key starts key control unit will control electric valve for gas burner unlatching, and startup rotating speed is 120-130r/min;
Step 3: detect the rotating speed of motor in the process of carrying out step 2, when the rotating speed of motor is when starting rotating speed and be elevated to idling suddenly, electric valve for gas burner no longer increases aperture simultaneously, engine start success, idling is 360r/min;
Step 4: after engine start success, starting motor stops, and remains idle according to set time, and dead time is 10min;
Step 5: after the idle time finishes, a key start key control unit will send instruction make motor by idle to rated speed, rated speed is 600r/min;
Step 6: motor reaches after rated speed, one key starts key control unit and by sensor, water temperature, oil temperature and lubricating oil pressure is detected, after detected parameters is up to standard, by sending the control unit of instruction to generator, carry out excitation startup, 40 ℃ of water temperature ﹥, 45 ℃ of oil temperature ﹥, lubricating oil pressure ﹥ 0.25MP.
Step 7: in carrying out the process of step 6, one key starts key control unit the output voltage of generator is detected, the output voltage of generator reaches after requirement, send grid-connected instruction, the control unit of generator will be opened same period detection unit and carry out grid-connected after receiving grid-connected instruction, after being connected to the grid successfully, generator control unit will feed back grid-connected one-tenth function signal to a key startup key control unit, and generator output voltage is 400V;
Step 8 a: key starts after key control unit is received grid-connected one-tenth function signal will enter loading mode, electric valve for gas burner is all opened, the inlet of combustion gas is all controlled by air fuel ratio control unit, monitor the stability of power and row's temperature of each cylinder of motor simultaneously, when engine power fluctuation or row's temperature abnormality, air fuel ratio control unit is by suitable adjusting air-fuel ratio, until power is loaded into setting value, set value of the power is 500KW.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105259864A (en) * | 2015-11-09 | 2016-01-20 | 成都安美科燃气技术股份有限公司 | Remote automatic monitoring system for generating set |
CN105927430A (en) * | 2016-06-21 | 2016-09-07 | 刘联合 | Power fuel automatic synchronous adjustment converter |
CN110107409A (en) * | 2019-05-07 | 2019-08-09 | 伽略环保科技(上海)有限公司 | A kind of one-key start control system of Generator Set |
CN113364034A (en) * | 2021-06-11 | 2021-09-07 | 重庆普什机械有限责任公司 | Automatic control method and device for gas generator set |
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CN202157865U (en) * | 2011-07-15 | 2012-03-07 | 成都安美科科技有限公司 | 80kW marsh gas power generator set |
CN202430240U (en) * | 2011-12-28 | 2012-09-12 | 河北省首钢迁安钢铁有限责任公司 | Automatic startup control system for differential pressure power generation |
CN203769955U (en) * | 2013-12-30 | 2014-08-13 | 淄博淄柴新能源有限公司 | One key starting control system for large-sized fuel gas generator set |
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JPH05263675A (en) * | 1992-03-24 | 1993-10-12 | Tokyo Gas Co Ltd | Method and device for controlling operation of gas engine |
CN202157865U (en) * | 2011-07-15 | 2012-03-07 | 成都安美科科技有限公司 | 80kW marsh gas power generator set |
CN202430240U (en) * | 2011-12-28 | 2012-09-12 | 河北省首钢迁安钢铁有限责任公司 | Automatic startup control system for differential pressure power generation |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105259864A (en) * | 2015-11-09 | 2016-01-20 | 成都安美科燃气技术股份有限公司 | Remote automatic monitoring system for generating set |
CN105927430A (en) * | 2016-06-21 | 2016-09-07 | 刘联合 | Power fuel automatic synchronous adjustment converter |
CN105927430B (en) * | 2016-06-21 | 2018-11-06 | 刘联合 | Power fuel automatic synchronization adjusts converter |
CN110107409A (en) * | 2019-05-07 | 2019-08-09 | 伽略环保科技(上海)有限公司 | A kind of one-key start control system of Generator Set |
CN110107409B (en) * | 2019-05-07 | 2021-11-12 | 伽略环保科技(上海)有限公司 | Tail gas detection device and one-key start control system of large generator set |
CN113364034A (en) * | 2021-06-11 | 2021-09-07 | 重庆普什机械有限责任公司 | Automatic control method and device for gas generator set |
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