CN204231240U - Energy-saving scaled bulb tubular hydraulic generator cooling control system - Google Patents

Energy-saving scaled bulb tubular hydraulic generator cooling control system Download PDF

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Publication number
CN204231240U
CN204231240U CN201420797727.2U CN201420797727U CN204231240U CN 204231240 U CN204231240 U CN 204231240U CN 201420797727 U CN201420797727 U CN 201420797727U CN 204231240 U CN204231240 U CN 204231240U
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cold wind
pump
plc
relay
frequency converter
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张方庆
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Abstract

A kind of energy-saving scaled bulb tubular hydraulic generator cooling control system, wherein cold wind control section and water pump control part are connected on PLC, cold wind control section and water pump control part work is controlled by PLC, the hot air temperature transducer heat outputting air temperature signal of cold wind control part subpackage is to PLC, PLC exports control signal to cold wind relay, external power supply passes through cold wind relay to cold wind inverter supply, cold wind transducer drive cold wind blower fan moves, cold wind temperature sensor in water pump control part exports cold wind temperature signal to PLC, PLC exports control signal to feed pump relay and reserve pump relay, feed pump frequency converter and reserve pump frequency converter are arranged in parallel, external power supply passes through feed pump relay to feed pump inverter supply, external power supply passes through reserve pump relay to reserve pump inverter supply, feed pump transducer drive feed pump works, reserve pump transducer drive reserve pump works.

Description

Energy-saving scaled bulb tubular hydraulic generator cooling control system
Technical field
The utility model discloses a kind of cooling control system, particularly a kind of energy-saving scaled bulb tubular hydraulic generator cooling control system.
Background technology
Because bulb tubular hydraulic generating set is when utilizing low water head resource, there is the advantage that efficiency is high, conveyance capacity is strong, at present China's hydroelectric power generation sector application more and more generally generating set generally adopt the sealing circulation of aerial cooler and stator adherence structure, the type of cooling of forced ventilation: heat is taken away by the cold water that the hot blast namely in Generator hall sends into air cooler by cooling water pump, after cooling, cold wind is blown in machine hall by axial flow cooling blower and circulates, and then controls the temperature rise of generator.Cooling blower number of units and power generally configure 2 or 4 according to the amount of capacity of unit, and cooling water pump is by a main standby mode configuration, and the load of single-machine capacity when the unit cooling system work of more than 10MW is all at more than 100KW.But the size, ambient temperature etc. of the caloric value of generator and unit institute on-load have much relations, pressure versus flow, the cold in-water temperature of unit cooling effect and cooling water have very large association.Current scaled bulb tubular hydraulic generator cooling system control mode is: no matter unit load is how many, and how high cold in-water temperature is, and no matter how ambient temperature changes, as long as unit operation, and cooling blower and the equal oepration at full load of cooling water pump.Blower fan, water pump utilize the PLC now organizing local control unit to control, when hot blast, cold wind temperature perform shutdown procedure time too high.Even if this just causes generator under same load condition, particularly season from different places cold in winter and hot in summer generator range of temperature very large, as: when single-machine capacity is the power station oepration at full load in summer of 13MW, mean temperature is at about 80 DEG C, and during oepration at full load in winter mean temperature at about 40 DEG C, during spring and autumn oepration at full load, mean temperature is at about 50 DEG C, and unit temperature is when output is less than rated power, temperature in Various Seasonal change more greatly, causes unnecessary waste.
Summary of the invention
Existing for the above-mentioned generator cooling system of the prior art mentioned can not oepration at full load, cause the shortcoming of energy waste, the utility model provides a kind of energy-saving scaled bulb tubular hydraulic generator cooling control system, it carrys out the operating power of Intelligent adjustment blower and water pump by the temperature detecting air-out, and it can be made to reach oepration at full load.
The technical scheme that the utility model solves the employing of its technical problem is: a kind of energy-saving scaled bulb tubular hydraulic generator cooling control system, cooling control system comprises PLC, cold wind control section and water pump control part, cold wind control section and water pump control part are connected on PLC, cold wind control section and water pump control part work is controlled by PLC, described cold wind control section comprises cold wind frequency converter, cold wind relay, cold wind blower fan and hot air temperature transducer, hot air temperature transducer heat outputting air temperature signal is to PLC, PLC exports control signal to cold wind relay, external power supply passes through cold wind relay to cold wind inverter supply, cold wind transducer drive cold wind blower fan moves, described water pump control part comprises feed pump frequency converter, feed pump relay, reserve pump frequency converter, reserve pump relay, feed pump, reserve pump and cold wind temperature sensor, cold wind temperature sensor exports cold wind temperature signal to PLC, PLC exports control signal to feed pump relay and reserve pump relay, feed pump frequency converter and reserve pump frequency converter are arranged in parallel, external power supply passes through feed pump relay to feed pump inverter supply, external power supply passes through reserve pump relay to reserve pump inverter supply, feed pump transducer drive feed pump works, reserve pump transducer drive reserve pump works.
The technical scheme that the utility model solves the employing of its technical problem further comprises:
Described cooling control system also comprises cold wind bypass contactor, and cold wind bypass contactor and cold wind frequency converter are connected in parallel.
Cold wind status indicator lamp is connected in series with described cold wind bypass contactor.
Described cooling control system also comprises hot air temperature aobvious control instrument, and hot air temperature transducer is connected on hot air temperature aobvious control instrument, and hot air temperature shows control instrument and the hot air temperature collected is exported to PLC.
Described each cold wind frequency converter is connected with plural cold wind blower fan.
Described cooling control system also comprises water pump bypass contactor, and water pump bypass contactor and feed pump frequency converter and reserve pump frequency converter are connected in parallel.
Water pump status indicator lamp is connected in series with described water pump bypass contactor.
Described cooling control system also comprises cold wind temperature aobvious control instrument, and cold wind temperature sensor is connected on cold wind temperature aobvious control instrument, and cold wind temperature shows control instrument and the cold wind temperature collected is exported to PLC.
The beneficial effects of the utility model are: in the utility model, unit cooling system can according to the speed of the real-time Controlled cooling system heat exchange of temperature of unit caloric value and coolant, generator-temperature detection is controlled within the scope of a stationary temperature, special significantly regional in the four seasons cold in winter and hot in summer, or fairly obvious at the Electricity Generation unit energy-saving effect that adjustable range is larger.Control to guarantee unit cooling system energy reliably working by perfect, fail-safe program, improve the fail safe of unit operation.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model cooling blower partial circuit schematic diagram.
Fig. 3 is the utility model cooling water pump partial circuit schematic diagram.
Fig. 4 is the utility model hydraulic generator control PLC partial circuit schematic diagram.
Fig. 5 is the utility model unit cooling blower control flow chart.
Fig. 6 is the utility model unit cooling water pump control flow chart.
Fig. 7 is the utility model cooling water pump time in turn flow chart.
Fig. 8 is that the utility model cooling water pump PLC control wheel changes flow chart.
Embodiment
The present embodiment is the utility model preferred implementation, and other its principles all are identical with the present embodiment or approximate with basic structure, all within the utility model protection range.
The utility model is mainly a kind of energy-saving scaled bulb tubular hydraulic generator cooling control system, and its cardinal principle is the air quantity of the hot air temperature controlled cooling model blower fan by generator; By the pressure (flow) of the cold wind temperature controlled cooling model water pump of generator.The coil temperature of 80 DEG C is less on insulation impact, and the energy-saving potential of cooling system is very large because generator coil generally adopts F class F insulation! Average of the whole year fractional energy savings could reach more than 30% if controlled by generator-temperature detection below 80 DEG C under different operating mode!
Please refer to and send out Fig. 1, the utility model mainly comprises PLC (as control element of the present utility model), cold wind control section and water pump control part, in the present embodiment, cold wind control section comprises cold wind frequency converter, cold wind relay, cold wind bypass contactor, cold wind blower fan and hot air temperature transducer, in the present embodiment, hot air temperature transducer is for detecting the temperature of the hot blast of cold wind blower fan blowout, hot air temperature transducer is connected on hot air temperature aobvious control instrument, hot air temperature shows control instrument and the hot air temperature collected is exported to PLC, namely hot air temperature transducer and hot air temperature are aobvious controls instrument and is connected, hot air temperature aobvious control instrument is connected with PLC, PLC exports control signal to cold wind relay, external power supply passes through cold wind relay to cold wind inverter supply, cold wind transducer drive cold wind blower fan moves, namely the control end of cold wind relay is connected on PLC, external power supply and cold wind frequency converter are connected on the contact of cold wind relay, blower fan is connected on cold wind frequency converter, in the present embodiment, because unit needs Homogeneouslly-radiating, therefore adopt one drag two or to drag the mode of N, an i.e. plural cold wind blower fan of cold wind transducer drive.In the present embodiment, be connected in parallel to cold wind bypass contactor with cold wind frequency converter, short circuit can be carried out to frequency converter by cold wind bypass contactor, cold wind blower fan is run under power frequency.In the present embodiment, be connected in series with cold wind status indicator lamp with cold wind bypass contactor, be used to indicate the operating state (i.e. manual mode or auto state) of cold wind blower fan.In the present embodiment, cold wind frequency converter carries fault detection capability, or fault detection module can be connected with on cold wind frequency converter, the failure condition of cold wind frequency converter is fed back to PLC.
In the present embodiment, water pump control part comprises feed pump frequency converter, feed pump relay, reserve pump frequency converter, reserve pump relay, water pump bypass contactor, feed pump, reserve pump and cold wind temperature sensor, in the present embodiment, the temperature (temperature of air namely through cooling by water after) of cold wind of cold wind temperature sensor for detecting cold wind blower fan and being blown into, cold wind temperature sensor is connected on cold wind temperature aobvious control instrument, cold wind temperature shows control instrument and the cold wind temperature collected is exported to PLC, namely cold wind temperature sensor is connected on cold wind temperature aobvious control instrument, cold wind temperature aobvious control instrument is connected on PLC, PLC exports control signal to feed pump relay (or reserve pump relay), external power supply passes through feed pump relay to feed pump inverter supply (external power supply passes through reserve pump relay to reserve pump inverter supply), feed pump transducer drive feed pump work (work of reserve pump transducer drive reserve pump), namely the control end of feed pump relay is connected on PLC, external power supply and feed pump frequency converter are connected on the contact of feed pump relay, feed pump is connected on feed pump frequency converter, the connected mode of reserve pump is identical, repeat no more herein.In the present embodiment, (feed pump frequency converter and reserve pump frequency converter is comprised with pump variable frequency device, wherein feed pump frequency converter and reserve pump frequency converter are connected in parallel) be connected in parallel to water pump bypass contactor, short circuit can be carried out to pump variable frequency device by water pump bypass contactor, water pump (feed pump or reserve pump) is run under power frequency.In the present embodiment, be connected in series with water pump status indicator lamp with water pump bypass contactor, be used to indicate the operating state (i.e. manual mode or auto state) of water pump fan.In the present embodiment, (comprising feed pump frequency converter and reserve pump frequency converter) carries fault detection capability with pump variable frequency device, or can be connected with fault detection module on pump variable frequency device, and the failure condition of pump variable frequency device is fed back to PLC.
Please refer to accompanying drawing 5, in the utility model, cooling blower control principle is: because unit needs Homogeneouslly-radiating, therefore adopt one drag two or to drag the mode of N, shown in cooling blower control circuit figure " energy-saving cold control-01 ", " energy-saving cold control-03 ", " energy-saving cold control-04 ", frequency converter is with bypass contactor, mode of operation has manually and automated manner, under manual control mode, frequency converter is bypassed contactor bypass, motor power frequency rotating speed runs, under automatic control mode, by the PLC program control of unit local control unit.
Cooling blower automatic control mode is as follows: after unit allocation PLC receives out air-cooler order, as judged, cooling blower is at automatic control mode, drive the output relay K2 that cooling blower frequency converter runs, frequency converter starts, frequency converter shows the hot air temperature analog quantity that collects of control instrument according to air cooler of generators hot air temperature and automatically carries out rotating speed control, in automatic control process, PLC as receive shutdown stop cooling blower order after, cooling blower is driven to stop output relay K1, frequency converter is quit work, PLC is as received during " cooling blower frequency converter failure or air cooler hot air temperature higher " signal, PLC driven by program cooling blower stops output relay K1, frequency converter is quit work, drive the bypass of cooling blower frequency converter to run output relay K3 simultaneously, cooling blower is run under power frequency rotary regimes, guarantee the heat radiation of unit.
Please refer to accompanying drawing 6, in the utility model, cooling water pump adopts the control mode of one-to-one, adopts standby usage operational mode.Cooling blower control circuit figure is as shown in figure " energy-saving cold control-02 ", " energy-saving cold control-03 ", " energy-saving cold control-05 ", " energy-saving cold control-06 ", frequency converter is with bypass contactor, mode of operation has manually and automated manner, under manual control mode, frequency converter is bypassed contactor bypass, pump motor power frequency rotating speed runs, under automatic control mode, by the PLC program control of unit local control unit.
And cooling water the automatic control of pump is as follows: during generator start, when PLC program perform throw cooling water pump make time, if primary water pump is at automatic control bit, drive and start primary cooling water pump output relay K5 or K8 (the primary, spare operational mode of water pump is determined by cooling water pump time in turn program), if not at automatic control bit, alarm.Frequency converter shows the generator cold wind temperature simulation amount that collects of control instrument according to air cooler cold wind temperature and carries out real-time regulable control to pump rotary speed under K5 or K8 drives.In running, when machine set PLC receive shutdown stop cooling water pump make time, driven by program cooling water pump frequency converter stops output relay K4 and K7, and two pump variable frequency devices quit work.PLC is as received primary cooling water pump frequency converter failure signal, primary cooling water pump frequency converter is driven to stop output relay, drive cooling water pump for subsequent use to run output relay simultaneously, standby variable frequency device is devoted oneself to work, and reports primary cooling water pump frequency converter failure signal.If in normal course of operation, when PLC receives air cooler cold wind temperature drift signal, drive cooling water pump for subsequent use to run output relay simultaneously, standby variable frequency device is devoted oneself to work, and report " air cooler cold wind temperature is too high, drops into standby variable frequency device " fault-signal.If air cooler cold wind temperature drift signal automatically resets, delay and running cooling water pump frequency converter for subsequent use stops output relay, makes standby variable frequency device out of service.
When machine set PLC receives two pump variable frequency device fault-signals; primary water pump bypass is then driven to run output relay; primary water pump power frequency rotating speed runs; as time delay do not receive primary water pump by-path running status information or receive primary water pump Thermal protection action message time, program just drives reserve pump bypass to run output relay.Circulation like this performs PLC control program.
In the utility model, unit cooling system can according to the speed of the real-time Controlled cooling system heat exchange of temperature of unit caloric value and coolant, generator-temperature detection is controlled within the scope of a stationary temperature, special significantly regional in the four seasons cold in winter and hot in summer, or fairly obvious at the Electricity Generation unit energy-saving effect that adjustable range is larger.Control to guarantee unit cooling system energy reliably working by perfect, fail-safe program, improve the fail safe of unit operation.

Claims (8)

1. an energy-saving scaled bulb tubular hydraulic generator cooling control system, it is characterized in that: described cooling control system comprises PLC, cold wind control section and water pump control part, cold wind control section and water pump control part are connected on PLC, cold wind control section and water pump control part work is controlled by PLC, described cold wind control section comprises cold wind frequency converter, cold wind relay, cold wind blower fan and hot air temperature transducer, hot air temperature transducer heat outputting air temperature signal is to PLC, PLC exports control signal to cold wind relay, external power supply passes through cold wind relay to cold wind inverter supply, cold wind transducer drive cold wind blower fan moves, described water pump control part comprises feed pump frequency converter, feed pump relay, reserve pump frequency converter, reserve pump relay, feed pump, reserve pump and cold wind temperature sensor, cold wind temperature sensor exports cold wind temperature signal to PLC, PLC exports control signal to feed pump relay and reserve pump relay, feed pump frequency converter and reserve pump frequency converter are arranged in parallel, external power supply passes through feed pump relay to feed pump inverter supply, external power supply passes through reserve pump relay to reserve pump inverter supply, feed pump transducer drive feed pump works, reserve pump transducer drive reserve pump works.
2. energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 1, is characterized in that: described cooling control system also comprises cold wind bypass contactor, and cold wind bypass contactor and cold wind frequency converter are connected in parallel.
3. energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 2, is characterized in that: be connected in series with cold wind status indicator lamp with described cold wind bypass contactor.
4. the energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 1 or 2 or 3, it is characterized in that: described cooling control system also comprises hot air temperature aobvious control instrument, hot air temperature transducer is connected on hot air temperature aobvious control instrument, and hot air temperature shows control instrument and the hot air temperature collected is exported to PLC.
5. the energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 1 or 2 or 3, is characterized in that: described each cold wind frequency converter is connected with plural cold wind blower fan.
6. the energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 1 or 2 or 3, it is characterized in that: described cooling control system also comprises water pump bypass contactor, water pump bypass contactor and feed pump frequency converter and reserve pump frequency converter are connected in parallel.
7. energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 6, is characterized in that: be connected in series with water pump status indicator lamp with described water pump bypass contactor.
8. the energy-saving scaled bulb tubular hydraulic generator cooling control system according to claim 1 or 2 or 3, it is characterized in that: described cooling control system also comprises cold wind temperature aobvious control instrument, cold wind temperature sensor is connected on cold wind temperature aobvious control instrument, and cold wind temperature shows control instrument and the cold wind temperature collected is exported to PLC.
CN201420797727.2U 2014-12-15 2014-12-15 Energy-saving scaled bulb tubular hydraulic generator cooling control system Active CN204231240U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420797727.2U CN204231240U (en) 2014-12-15 2014-12-15 Energy-saving scaled bulb tubular hydraulic generator cooling control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420797727.2U CN204231240U (en) 2014-12-15 2014-12-15 Energy-saving scaled bulb tubular hydraulic generator cooling control system

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CN204231240U true CN204231240U (en) 2015-03-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697350A (en) * 2016-01-28 2016-06-22 西安长庆科技工程有限责任公司 Control method for oil delivery pumps of crude oil transfer device
CN109990443A (en) * 2019-04-11 2019-07-09 舒心(南京)环保能源科技有限公司 A kind of intelligent power saving automatic control frequency converter control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697350A (en) * 2016-01-28 2016-06-22 西安长庆科技工程有限责任公司 Control method for oil delivery pumps of crude oil transfer device
CN105697350B (en) * 2016-01-28 2017-12-12 西安长庆科技工程有限责任公司 A kind of crude oil switches through the control method of device oil transfer pump
CN109990443A (en) * 2019-04-11 2019-07-09 舒心(南京)环保能源科技有限公司 A kind of intelligent power saving automatic control frequency converter control system

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