CN106527320B - Detection and maintenance system and method for heater in generator set - Google Patents
Detection and maintenance system and method for heater in generator set Download PDFInfo
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- CN106527320B CN106527320B CN201611144015.0A CN201611144015A CN106527320B CN 106527320 B CN106527320 B CN 106527320B CN 201611144015 A CN201611144015 A CN 201611144015A CN 106527320 B CN106527320 B CN 106527320B
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- 238000001514 detection method Methods 0.000 title claims abstract description 82
- 238000012423 maintenance Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 143
- 230000008859 change Effects 0.000 claims abstract description 115
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 230000008676 import Effects 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 230000004888 barrier function Effects 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000011835 investigation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
Abstract
The invention discloses a detection and maintenance system and a detection and maintenance method for a heater in a generator set, which are used in the field of power systems and can solve the problem that the utilization rate of the generator set is reduced due to emergency shutdown of the generator set caused by false alarm. The detection maintenance system comprises: the switch module starts the heater by receiving a starting instruction sent by the controller, and closes the heater by receiving a closing instruction sent by the controller; the heating chamber is used for containing liquid and is provided with an inlet for liquid to flow in and an outlet for liquid to flow out; a temperature detector which is arranged to detect the temperature of the liquid in the heating chamber and send the temperature to the controller; the controller is used for sending a command for starting the heater to the switch module, calculating a temperature change parameter of the liquid in a preset time period according to the received temperature, judging the feedback state of the switch module, and judging whether the heater fails or not based on the judged feedback state and the temperature change parameter.
Description
Technical field
The present invention relates to a kind of detection maintenance system of heater in field of power more particularly to generating set and sides
Method.
Background technology
Wind power generating set is typically installed at the wild environment of environmental condition rather harsh, and temperature can be low in winter for some
In -20 DEG C, in order to ensure the normal operation of wind power generating set internal unit, need to carry out temperature to unit inside using heater
Degree control.The converter part of wind power generating set using water circulation system into trip temperature control, wherein water-cooling heating device by with
Water in heating water circulating system so that the water temperature in water-cooling system is improved, to heat current transformer.In water-cooling system
Water is in the confined space of water-cooling system, and fluid exchange is not present with the external world so that water temperature in water-cooling circulating system with
The work of water-cooling heating device is stepped up.Detailed process is that (Programmable Logic Controller may be programmed PLC
Logic controller) send out enabled instruction after, switching molding switch in the block is closed, and heater connect start-up operation with power supply, and PLC leads to
It crosses and receives the feedback signal in switch module after switch closure to confirm that heater connect start-up operation with power supply.But in reality
In the operational process of border, when the case where wiring loosening occurs in circuit in switch module, although heater is connect with power supply starts work
Make, but PLC can not receive the feedback signal of switch module, PLC does not receive the feedback signal of switch module, with for heater event
Hinder and generate alarm, is i.e. PLC generates false alarm because switch module is abnormal.No matter alarm is true and false at this time, and generating set is both needed to
Emergency shutdown is wanted to protect unit safety to operate, to seriously reduce the utilization rate of generating set.
Invention content
An embodiment of the present invention provides a kind of detection maintenance system of wind power generating set water-cooling heating device and methods, can
Solve the problems, such as that generating set reduces the utilization rate of generating set because of false alarm.
In a first aspect, the present invention provides a kind of detection maintenance systems of heater in generating set, including：Controller,
Switch module and temperature detector；
Switch module starts or closes heater by receiving the switch order that controller is sent, wherein heater is extremely
A few part, which immerses, to be heated in indoor liquid, and heating room is provided with the import flowed into for liquid and goes out for what liquid flowed out
Mouthful；
Temperature detector is provided to the temperature of the liquid of detection heating room and is sent to controller；
Controller, for sending the order for starting heater to switch module, when default according to the temperature computation received
Between in section liquid temperature change parameter, and judge the feedback states of switch module, and based on the feedback states judged and
Temperature variation judge heater whether failure, wherein feedback states include controller receive switch module open feedback letter
Number or controller do not receive switch module open feedback signal.
According to the first aspect of the invention, controller is additionally operable to：
When device receives feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is greater than or equal to preset value, judge that heater is normal；
When device does not receive feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is greater than or equal to preset value, judge that heater is normal.
Above-mentioned aspect according to the present invention, method further include：
When device receives feedback signal to feedback states in order to control, judge to judge that switch module is normal；
If temperature change parameter is less than preset value, judge that switch module is normal；
If temperature change parameter is greater than or equal to preset value, judge that switch module is normal；
When device does not receive feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is greater than or equal to preset value, switch module failure is judged.
Above-mentioned aspect according to the present invention, temperature detector include being arranged in exit and the outlet temperature that is connect with controller
Spend detector, wherein
Outlet temperature detector, the temperature of the liquid for detecting exit are simultaneously sent to controller.
Above-mentioned aspect according to the present invention, outlet temperature detector are additionally operable to：
When controller sends out the order for starting heater, measures the first temperature of the liquid in exit and be sent to control
Device, and after waiting for preset time period, measure the second temperature of the liquid in exit and be sent to controller.
Above-mentioned aspect according to the present invention, controller are additionally operable to：
The temperature change of liquid in preset time period is calculated according to the first temperature received and the second temperature received
Parameter.
Above-mentioned aspect according to the present invention, temperature change parameter include rate of temperature change, and preset value includes that preset temperature becomes
Rate.
Above-mentioned aspect according to the present invention, the controller are additionally operable to：
Temperature needed for the temperature change parameter and the preset value and/or the generating set judges
The no power for needing to adjust the heater；
When needing to adjust the power of the heater, to the heater transmission power adjust instruction.
Above-mentioned aspect according to the present invention, temperature detector further include being arranged in entrance and the import that is connect with controller
Temperature detector, inlet and outlet are connected by external pipe, and liquid is made to be circulated to the direction of outlet according to by import,
In,
Inlet temperature detector, the third temperature of the liquid for measuring entrance are simultaneously sent to controller；
Controller is additionally operable to execute one or more in following judgement：
When second temperature is less than or equal to third temperature, setting for inlet temperature detector and outlet temperature detector is judged
Seated position is opposite；
When second temperature is more than third temperature and the first temperature, judgement detection maintenance system is normal；
When second temperature is more than third temperature and is less than or equal to the first temperature, external pipe failure is judged.
Above-mentioned aspect according to the present invention, the controller are additionally operable to：
Receive the temperature of the liquid of the temperature detector detection；
According to the temperature detector detection liquid temperature and the generating set needed for temperature determine start or
Close the heater.
Second aspect, the present invention provides a kind of detection maintaining method of wind power generating set water-cooling heating device, for the
The detection maintenance system of one side, wherein from import to output flow, method includes liquid：
Controller sends the order for starting heater to switch module；
The temperature of temperature detector detection liquid is simultaneously sent to controller；
Controller is according to the temperature change parameter of liquid in the temperature computation preset time period received；
Controller judges the feedback states of switch module, feedback states include controller receive switch module open feedback
What signal or controller did not received switch module opens feedback signal；
Controller based on the feedback states and temperature change parameter decision heater judged whether failure.
According to the second aspect of the invention, the temperature variation of liquid includes in controller acquisition preset time period：
Based on the feedback states and temperature change parameter decision heater judged, whether failure includes controller：
When device receives feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is greater than or equal to preset value, judge that heater is normal；
When device does not receive feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is greater than or equal to preset value, judge that heater is normal.
Above-mentioned aspect according to the present invention, method further include：
When device receives feedback signal to feedback states in order to control, judge to judge that switch module is normal；
If temperature change parameter is less than preset value, judge that switch module is normal；
If temperature change parameter is greater than or equal to preset value, judge that switch module is normal；
When device does not receive feedback signal to feedback states in order to control, judge whether temperature change parameter is less than preset value；
If temperature change parameter is greater than or equal to preset value, switch module failure is judged.
Above-mentioned aspect according to the present invention, temperature detector, which detects the temperature of liquid and is sent to controller, includes：
The temperature of the liquid in outlet temperature detector detection exit is simultaneously sent to controller.
Above-mentioned aspect according to the present invention, the temperature of the liquid in outlet temperature detector detection exit are simultaneously sent to control
Device includes：
When controller sends out the order for starting heater, the first temperature of the liquid in outlet temperature detectors measure exit
It spends and is sent to controller；
After waiting for preset time period, the second temperature of the liquid in outlet temperature detectors measure exit is simultaneously sent to control
Device processed.
Above-mentioned aspect according to the present invention, controller is according to the temperature of liquid in the temperature computation preset time period received
Running parameter includes：
Controller calculates the temperature of liquid in preset time period according to the first temperature received and the second temperature received
Spend running parameter.
Above-mentioned aspect according to the present invention, temperature change parameter include rate of temperature change, and preset value includes that preset temperature becomes
Rate.
Above-mentioned aspect according to the present invention, the method further include：
The controller is according to needed for the temperature change parameter and the preset value and/or the generating set
Temperature judges whether to need to adjust the power of the heater, and when needing to adjust the power of the heater, to described
Heater transmission power adjust instruction.
Above-mentioned aspect according to the present invention, method further include：
After waiting for preset time period, the third temperature of the liquid of inlet temperature detectors measure entrance is simultaneously sent to control
Device processed；
Controller executes following one or more in judging：
When second temperature is less than or equal to third temperature, setting for inlet temperature detector and outlet temperature detector is judged
Seated position is opposite；
When second temperature is more than third temperature and the first temperature, judgement detection maintenance system is normal；
When second temperature is more than third temperature and is less than or equal to the first temperature, external pipe failure is judged.
Above-mentioned aspect according to the present invention, the method further include：
The controller receives the temperature of the liquid of the temperature detector detection, and is detected according to the temperature detector
Liquid temperature and temperature needed for the generating set determine and start or close the heater.
An embodiment of the present invention provides a kind of detection maintaining method of heater in generating set and system, examined in the present invention
At least part for surveying heater in maintenance system immerses the heating interior for accommodating liquid, and heating room is provided with inlet and outlet,
It flows liquid into and flows out heating room, so at heater operating room, heat the liquid in room by carrying out heat with heater
It transmits and temperature changes, the temperature of liquid is detected by temperature detector and is sent to controller, controller is to switch
After module sends the order for starting heater, according to the temperature of liquid in the temperature computation preset time period of temperature detector detection
Running parameter, and by the temperature change parameter decision heater of the feedback states of switch module and liquid whether failure.In this way,
Controller carries out multi-level heater detection by combining the temperature change parameter of the feedback states of switch module and liquid
It safeguards, ensures the accuracy that heater detection is safeguarded, avoid controller that false alarm occurs, and then reduce generating set and promptly stop
The case where machine and gradually investigation generation failure cause, to improve the utilization rate of generating set.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the schematic knot of the detection maintenance system of heater in the generating set provided according to one embodiment of the invention
Composition；
Fig. 2 is the schematic of the detection maintenance system of heater in the generating set provided according to further embodiment of this invention
Structure chart；
Fig. 3 is the schematic stream of the detection maintaining method of heater in the generating set provided according to one embodiment of the invention
Cheng Tu.
Wherein：101- controllers；102- switch modules；103- outlet temperature detectors；104- inlet temperature detectors；
201- heaters；202- heats room；203- imports；204- is exported.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The detection maintenance system and method for heater are used for adding in generating set in generating set in the embodiment of the present invention
Hot device is detected maintenance, specifically can be used for being detected maintenance to water-cooling heating device in wind power generating set.
Fig. 1 shows the signal of the detection maintenance system of heater 201 in generating set according to an embodiment of the invention
Property structure chart.Detection maintenance system is used to be detected maintenance, at least part leaching of heater 201 to heater in Fig. 1 201
Enter to heat in the liquid in room 202, the heating room 202 is provided with the import 203 flowed into for liquid and for liquid outflow
Outlet 204.It includes controller 101, switch module 102 and temperature detector to detect maintenance system, and switch module 102 is by connecing
The instruction that admission controller 101 is sent starts or closes heater 201, and heating accommodates liquid in room 202, and heats room 202 and set
It is equipped with the import 203 flowed into for liquid and the outlet 204 flowed out for liquid, temperature detector is connect with controller 101, quilt
The temperature of liquid to detect heating room 202 is set and is sent to controller 101.
Wherein, controller 101 controls the startup and closing of heater 201 by switch module 102, and switch module 102 is logical
It crosses and receives the enabled instruction startup heater 201 that controller 101 is sent, and referred to by receiving the closing that controller 101 is sent
It enables and closes heater 201.Controller 101, for sending the order for starting heater 201 to switch module 102, according to being received
Temperature computation preset time period in liquid temperature change parameter, and judge the feedback states of switch module 102, and be based on
The feedback states and temperature change parameter decision heater 201 judged whether failure.Feedback states include that controller 101 receives
Switch module 102 open feedback signal or what controller 101 did not received switch module 102 opens feedback signal.
It should be noted that when heater 201 works, the heat of heating can be transferred to liquid, make the temperature of liquid
It changes.In inventive embodiments, the transmission how heater 201 carries out heat with liquid does not limit, and energy may be used
The various methods enough realized, for example, at least part of heater 201 is immersed in liquid.The embodiment of the present invention is with heater
201 at least part, which immerses in liquid, to be illustrated between realization heater 201 and liquid for the mode of the transmission of heat.
Specifically, controller 101 sends out enabled instruction to switch module 102, the switch in switch module 102 is closed, and is made
Heater 201 powers on start-up operation, switchs in switch module 102 and is formed into a loop together with controller 101 after being closed, is controlled
Device 101 opens feedback signal by this circuit reception switch module 102, i.e. controller 101 receives opening for switch module 102
Logical feedback signal then illustrates that heater 201 is connected with power supply, and what controller 101 did not received switch module 102 opens feedback letter
Number, then illustrate that heater 201 may not connected with power supply；Heater 201 powers on start-up operation, liquid in control room 103
Entered by import 203, then by 204 outflow of outlet, during liquid flows, hot transmission is carried out with heater 201.If plus
Hot device 201 works normally, and liquid occurs temperature after heat is transmitted with heater 201 in heating room 202 and changes；If heating
201 failure of device, liquid in heating room 202 temperature will not change.In conclusion controller 101 is according to temperature detection
Whether the temperature change parameter of liquid in the temperature computation preset time period that device is sent, and what is judged receive switch module
102 open feedback signal, detecting whether heater 201 breaks down.
Controller 101 is by by the feedback states and liquid of switch module 102 in the detection maintenance system of the embodiment of the present invention
The temperature change parameter of body, which combines, carries out the multi-level detection maintenance of heater 201, and it is accurate to ensure that the detection of heater 201 is safeguarded
Property, avoiding controller 101 occurs false alarm, and then reduces generating set emergency shutdown and gradually investigation generation failure original
Because the case where, to improve the utilization rate of generating set.
Meanwhile in the prior art, it switchs and is closed after controller 101 sends out startup order, in control module 102, add
Hot device 201 powers on, and switch is formed into a loop after being closed with controller 101 together in switch module 102, and controller 101 passes through
Reception switch module 102 in circuit opens feedback information, and controller 101 thinks that heater 201 has started.But this
When heater 201 may damage, due to heater 201 be usually resistance type heater 201, although heater 201 and electricity
Source connect but due to its failure and can not normal heating, and controller 101 have received switch module 102 open feedback information after
Think that heater 201 has worked normally, in this case it is not apparent that heater 201 has occurred and that failure, so alarm would not be also sent out,
Generating set is also considered as heater 201 and is working at this time, but since 201 failure of heater does not heat, then generating set
Required temperature is not achieved in the equipment such as internal current transformer, has seriously affected the normal operation of generating set.The embodiment of the present invention
Detection maintenance system in by the temperature change parameters of the feedback states of switch module 102 and liquid is combined carry out it is multi-level
Heater 201 detection safeguard, can find the failure of heater 201 in time, avoid controller 101 without find heater
201 failures and the case where do not send out alarm, and then avoid the equipment such as current transformer inside generating set that required temperature is not achieved
The case where influencing the normal operation of generating set, it ensure that the normal operation of generating set, improve the utilization rate of generating set.
It is understood that the concrete mode that controller 101 shown in FIG. 1 detects 201 failure of heater can following mistake
Journey.
Controller 101 can be also used for：When feedback states in order to control device 101 receive open feedback signal when, judge temperature
Whether running parameter is less than preset value；If temperature change parameter is less than preset value, 201 failure of heater is judged；If warm
It spends running parameter and is greater than or equal to preset value, then judge that heater 201 is normal；And when feedback states in order to control do not receive by device 101
To when opening feedback signal, judge temperature change parameter whether be less than preset value；If temperature change parameter is less than preset value,
Judge 201 failure of heater；If temperature change parameter is greater than or equal to preset value, judge that heater 201 is normal.
Wherein, preset value is so that fluid temperature is changed in preset time period when preset heater 201 works normally
Temperature change parameter minimum value.When device 101 receives feedback signal to feedback states in order to control, show that controller 101 receives
Switch module 102 opens feedback signal, i.e. heater 201 is connected with power supply, at this time if temperature change parameter be more than or
Equal to preset value, then illustrate that heater 201 works normally；If temperature change parameter is less than preset value, illustrate heater 201
Failure has occurred.When device 101 does not receive feedback signal to feedback states in order to control, show that controller 101 does not receive switching molding
Block 102 opens feedback signal, and controller 101 does not receive may be out the reason of opening feedback signal for switch module 102
Close 102 failure of module, it is also possible to 201 failure of heater, so at this time if temperature change parameter is greater than or equal to preset value,
Then illustrate that heater 201 works normally；If temperature change parameter is less than preset value, illustrate that failure has occurred in heater 201.
In the detection maintenance system of the embodiment of the present invention controller 101 pass sequentially through switch module 102 feedback states and
The temperature change parameter of liquid detects heater 201 and safeguards, ensures the accuracy that the detection of heater 201 is safeguarded.
It is understood that controller 101 shown in FIG. 1 can also be by by the feedback states and liquid of switch module 102
The temperature change parameter of body is combined and is detected to whether switch module 102 breaks down.Concrete mode is：When feedback states are
Controller 101 receives when opening feedback signal, and judgement switch module 102 is normal；When device 101 does not receive out feedback states in order to control
When logical feedback signal, judge whether temperature change parameter is less than preset value；If temperature change parameter is greater than or equal to preset value,
Then judge 102 failure of switch module.
Wherein, when feedback states in order to control device 101 receive open feedback signal when, show that controller 101 has received out
The feedback signal of opening of module 102 is closed, i.e. switch module 102 is normal.When feedback states in order to control device 101 do not receive open it is anti-
When feedback signal, show that controller 101 does not receive the feedback signal of opening of switch module 102, controller 101 does not receive switch
Module 102 may be 102 failure of switch module the reason of opening feedback signal, it is also possible to 201 failure of heater, so this
When judge temperature change parameter whether be less than preset value, if temperature change parameter be greater than or equal to preset value, show at this time plus
Hot device 201 is normal, then judges 102 failure of switch module.
Controller 101 is by by the feedback states and liquid of switch module 102 in the detection maintenance system of the embodiment of the present invention
The temperature change parameter of body, which combines, to be detected maintenance to switch module 102, avoid controller 101 because of switch module
102 failures and false alarm occurs, and then reduce generating set emergency shutdown, to improve the utilization rate of generating set, and lead to
Above-mentioned reckoning gradually is crossed, failure real causes can be found, lowers difficulty and time that staff safeguards.
It is understood that temperature detector can be arranged in any position that can detect fluid temperature, but due to
Liquid is flowed by import 203, is occurred in heating room 202 again by 204 outflow of outlet after heat is transmitted, in order to ensure temperature detection
Temperature detector can be arranged the position in heating room 202 or close to outlet 204 in accuracy.But liquid is usually close
It is enclosed in heating room 202, if temperature detector is arranged in heating room 202, the sealing effect for heating room 202 can be generated
It influences.So temperature detector includes the outlet temperature detector 103 for being arranged at outlet 204 and being connect with controller 101.
Outlet temperature detector 103, for detect outlet 204 at liquid temperature and be sent to controller 101.
Specifically, outlet temperature detector 103 is additionally operable to：When controller 101 sends out the order for starting heater 201,
It measures the first temperature of the liquid at outlet 204 and is sent to controller 101, and after waiting for preset time period, measure outlet
The second temperature of liquid at 204 is simultaneously sent to controller 101.
Detection of the outlet temperature detector 103 to fluid temperature by the above process, controller 101 can calculate liquid
The temperature change generated due to heater 201.I.e. controller 101 is additionally operable to：According to the first temperature received and received
Second temperature calculate preset time period in liquid temperature change parameter.
It should be noted that temperature change parameter may include temperature variation and rate of temperature change, when temperature change is joined
When number is temperature variation, preset value is to make fluid temperature in preset time period when preset heater 201 works normally
The minimum value of the temperature variation of variation；When temperature change parameter is rate of temperature change, preset value is preset temperature change rate,
Make the minimum of the rate of temperature change of fluid temperature variation when i.e. preset heater 201 works normally in preset time period
Value.Controller 101 can calculate temperature variation by the difference of the first temperature and second temperature, can also by the first temperature and
The difference of second temperature obtains rate of temperature change in the time span in preset time period.
It is understood that controller 101 can also be according to the temperature change parameter and preset value and/or power generation
Temperature needed for unit judges whether the power for needing to adjust heater 201；When needing to adjust the power of heater 201, to
201 transmission power adjust instruction of heater.
Wherein, heater 201 can also be can be with the heater of regulation power, so controller 101 can be according to calculating
Temperature change parameter and preset value and/or generating set needed for temperature judge whether the work(for needing to adjust heater 201
Rate.
Specifically, temperature change parameter may determine that heater is normal when being more than preset value, controller 101 can be at this time
The power of heater 201 is adjusted.For example, controller 101 increases the power of heater 201, heater 201 is made to accelerate production
The rate of heat amount, and then the rate of accelerating liquid temperature rise.In addition, heater 201 can also become according to the temperature of calculating
Rate and the required temperature of generating set judge whether the power for needing to adjust heater 201.For example, 101 basis of controller
The required temperature of temperature and generating set of current liquid can determine temperature difference, if temperature difference is larger, controller 101
The power that heater 201 can be increased makes heater 201 accelerate to generate the rate of heat, and then accelerating liquid temperature rise
Rate；If temperature difference is smaller, controller 101 can reduce the power of heater 201, so that heater 201 is reduced and generate heat
Rate, so that fluid temperature is slowly increased, avoid the power due to heater 201 excessive, fluid temperature is caused to rise rapidly, into
And the case where making generating set medium temperature spend height, generating set is impacted.
It should be noted that in the embodiment of the present invention, controller 101 can be transported according to generating set in practical application scene
Row situation and the current state of heater are adjusted the power of heater 201, and adjustment mode is also not limited to foregoing description
Mode.When needing to adjust the power of heater 201, controller 101 can be sent out by switch module 102 to heater 201
Power adjustment instruction is sent, it can also be by other component or directly to 201 transmission power adjust instruction of heater.
Fig. 2 shows shown according to the detection maintenance system of heater 201 in the generating set of further embodiment of this invention
Meaning property structure chart.Detection maintenance system as shown in Figure 2, on the basis of detection maintenance system shown in Fig. 1, at import 203
The inlet temperature detector 104 being connect with controller 101 is set, and import 203 is connected with outlet 204 by external pipe,
Liquid is set to be circulated to the direction of outlet 204 according to by import 203.
Wherein, the inlet temperature detector 104 being connect with controller 101 is set at import 203, and such controller 101 is logical
Temperature of the liquid at import 203 can be detected by crossing inlet temperature detector 104, by detecting inlet temperature detector 104
The temperature that is detected with outlet temperature detector 103 of temperature compared, it may be determined that go out whether heater 201 works, and
Whether normal detect maintenance system.In addition, generating set can make liquid by external pipe by 204 connection of import 203 and outlet
Body circulates in external pipe according to the direction by import 203 to outlet 204.At this point, 101 inlet temperature of controller detects
The temperature that the temperature that device 104 detects is detected with outlet temperature detector 103 is compared, and can not only determine heater 201
Whether work, can also determine whether external pipe exception occurs, find failure in time and handled, improves generating set
Utilization rate.
Specifically, when controller 101 sends out the order for starting heater 201, outlet temperature detector 103 measures outlet
First temperature of the liquid at 204 is simultaneously sent to controller 101.And after waiting for preset time period, outlet temperature detector 103
It measures the second temperature of the liquid at outlet 204 and is sent to controller 101, inlet temperature detector 104 measures at import 203
Liquid third temperature and be sent to controller 101.Controller 101 is additionally operable to execute one or more in following judgement：
When second temperature is less than or equal to third temperature, the setting of judgement inlet temperature detector 104 and outlet temperature detector 103
Position is opposite；When second temperature is more than third temperature and the first temperature, judgement detection maintenance system is normal；When second temperature is big
In third temperature and less than or equal to the first temperature when, judge external pipe failure.
It is understood that in the above-described embodiments, controller 101 is additionally operable to：Receive the liquid of temperature detector detection
Temperature；Temperature needed for the temperature of the liquid of temperature detector detection and generating set, which determines, starts or closes heater
201。
Wherein, controller 101 can determine the temperature of liquid in real time by receiving the temperature of the liquid of temperature detector detection
Degree, and then the temperature needed for the temperature of liquid and generating set is compared, it can be deduced that whether the temperature of liquid meets
Temperature needed for generating set normal operation, and then determine and start or close heater 201.For example, if heater 201 does not open
The temperature of liquid can then determine less than the temperature needed for generating set and start heater 201 when dynamic, be sent out to switch module 102
Send the order for starting heater 201；If the temperature of the liquid during the work time of heater 201 is higher than the temperature needed for generating set
Degree illustrates that temperature of the liquid needed for generating set, heater 201 need not continue to heat, then can determine closing plus
Hot device 201 sends the order for closing heater 201 to switch module 102.
Controller 101 can start or close heater 201 in real time according to the temperature of liquid by the above process, avoid
The case where fluid temperature reduces, heater 201 cannot start and influence generating set normal operation in time, and avoid liquid
The temperature needed for generating set, heater cannot close in time, and the case where result in waste of resources.
Fig. 3 shows the signal of the detection maintaining method of heater 201 in generating set according to an embodiment of the invention
Property flow chart.Method shown in Fig. 3 can be used for detecting maintenance system shown in Fig. 1 or Fig. 2.In detecting maintenance system, heating
Liquid is from import 203 to 204 flowing of outlet in room 202, as shown in figure 3, this method includes：Step 301, controller 101 is to opening
It closes module 102 and sends the order for starting heater 201；Step 302, temperature detector detects the temperature of liquid and is sent to control
Device 101；Step 303, controller 101 is according to the temperature change parameter of liquid in the temperature computation preset time period received；Step
Rapid 304, controller 101 judges that the feedback states of switch module 102, feedback states include that controller 101 receives switch module 102
Open feedback signal or what controller 101 did not received switch module 102 opens feedback signal；Step 305, controller 101
Based on the feedback states and temperature change parameter decision heater 201 judged whether failure.
Specifically, step 305 can be executed specifically is：Step 3051, when device 101 receives feedback letter to feedback states in order to control
Number when, judge temperature change parameter whether be less than preset value；Step 3052, if temperature change parameter is less than preset value, sentence
Determine 201 failure of heater；Step 3053, if temperature change parameter is greater than or equal to preset value, judging heater 201 just
Often；Step 3054, when device 101 does not receive feedback signal to feedback states in order to control, it is pre- to judge whether temperature change parameter is less than
If value；Step 3055, if temperature change parameter is less than preset value, judge 201 failure of heater；Step 3056, if it is warm
It spends running parameter and is greater than or equal to preset value, then judge that heater 201 is normal.
It should be noted that the data processing principle of step 301- steps 305 is referred to retouching in embodiment illustrated in fig. 1
It states, details are not described herein.
As an optional embodiment, the detection maintaining method of heater 201 can also include in generating set：Step
306, when device 101 receives feedback signal to feedback states in order to control, judgement switch module 102 is normal；Step 307, when feedback shape
State judges whether temperature change parameter is less than preset value when device 101 does not receive feedback signal in order to control；Step 308, if temperature
Running parameter is greater than or equal to preset value, then judges 102 failure of switch module.
It should be noted that the data processing principle of step 306- steps 308 is referred to retouching in embodiment illustrated in fig. 1
It states, details are not described herein.
It is understood that step 302 can execute is：The detection of outlet temperature detector 103 exports the liquid at 204
Temperature is simultaneously sent to controller 101.
Specifically, when controller 101 sends out the order for starting heater 201, outlet temperature detector 103 measures outlet
First temperature of the liquid at 204 is simultaneously sent to controller 101；After waiting for preset time period, outlet temperature detector 103 is surveyed
It measures the second temperature of the liquid at mouth 204 and is sent to controller 101.
Further, step 303, which can execute, is：Controller 101 is according to the first temperature for being received and received the
The temperature change parameter of liquid in two temperature computation preset time periods.
It should be noted that temperature change parameter includes rate of temperature change, preset value includes preset temperature change rate.It is above-mentioned
The data processing principle of step 302 and step 303 is referred to the description in embodiment illustrated in fig. 1, and details are not described herein.
It is understood that the detection maintaining method of heater 201 further includes in the generating set of the embodiment of the present invention：Control
Temperature of the device 101 processed needed for temperature change parameter and preset value and/or generating set judges whether to need to adjust heating
The power of device 201, and when needing to adjust the power of heater 201, to 201 transmission power adjust instruction of heater.It is above-mentioned
The data processing principle of step is referred to the description in embodiment illustrated in fig. 1, and details are not described herein.
Outlet temperature detector 103 detects the first temperature and second temperature and is sent to controller 101 in step 302
Afterwards, this method further includes：Step 309, after waiting for preset time period, inlet temperature detector 104 measures the liquid at import 203
The third temperature of body is simultaneously sent to controller 101；Step 310, controller 101 executes one or more in following judgement：When
When second temperature is less than or equal to third temperature, the setting position of judgement inlet temperature detector 104 and outlet temperature detector 103
It sets opposite；When second temperature is more than third temperature and the first temperature, judgement detection maintenance system is normal；When second temperature is more than
Third temperature and less than or equal to the first temperature when, judge external pipe failure.
Wherein, liquid is circulated according to by import 203 to 204 directions of outlet, then temperature of the liquid at import 203
It can change, but if heater 201 works normally, temperature of the liquid at outlet 204 should increase and be more than import 203
The temperature at place, i.e. second temperature are more than third temperature and the first temperature.So if second temperature is more than third temperature and first
Temperature then judges that detection maintenance system is normal；If second temperature is less than or equal to third temperature, the i.e. temperature of liquid outlet 204
Degree less than the temperature of import 203, then be possible to import 203 at this time and export 204 with external pipe is reversed causes liquid by going out
Mouth 204 flows into heating rooms 201, flows out heating room 202, or it is possible that inlet temperature detector 104 and outlet temperature by import 203
The installation position for spending detector 103 is opposite so that inlet temperature detector 104 detected is temperature of the liquid at outlet 204
Degree, what outlet temperature detector 103 detected is temperature of the liquid at import 203；If second temperature be more than third temperature and
Less than or equal to the first temperature, then external pipe failure is judged.
It is understood that the detection maintaining method of heater 201 further includes in the generating set of the embodiment of the present invention：Control
Device 101 processed receives the temperature of the liquid of temperature detector detection, and according to the temperature of the liquid of temperature detector detection and power generation
Temperature needed for unit, which determines, starts or closes heater 201.
Wherein, controller 101 can determine the temperature of liquid in real time by receiving the temperature of the liquid of temperature detector detection
Degree, and then the temperature needed for the temperature of liquid and generating set is compared, it can be deduced that whether the temperature of liquid meets
Temperature needed for generating set normal operation, and then determine and start or close heater 201.For example, if heater 201 does not open
The temperature of liquid can then determine less than the temperature needed for generating set and start heater 201 when dynamic, be sent out to switch module 102
Send the order for starting heater 201；If the temperature of the liquid during the work time of heater 201 is higher than the temperature needed for generating set
Degree illustrates that temperature of the liquid needed for generating set, heater 201 need not continue to heat, then can determine closing plus
Hot device 201 sends the order for closing heater 201 to switch module 102.
Controller 101 can start or close heater 201 in real time according to the temperature of liquid by the above process, avoid
The case where fluid temperature reduces, heater 201 cannot start and influence generating set normal operation in time, and avoid liquid
The temperature needed for generating set, heater cannot close in time, and the case where result in waste of resources.
It should be noted that being detected to water-cooling heating device in wind power generating set in above-described embodiment when safeguarding, add
Liquid in hot cell 202 can be water work coolant liquid etc., and controller can be PLC controller.
In the embodiment of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should do broad sense reason
Solution, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be mechanical connection, it can also
It is electrical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For those of ordinary skill in the art and
Speech, visual concrete condition understand the concrete meaning of above-mentioned term in the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (20)
1. the detection maintenance system of heater in a kind of generating set, which is characterized in that the detection maintenance system includes：Control
Device (101), switch module (102) and temperature detector；
The switch module (102) starts or closes the heater by receiving the instruction that the controller (101) sends
(201), wherein heating room (202) is provided with the import (203) flowed into for liquid and the outlet (204) flowed out for liquid；
The temperature detector is provided to detect the temperature of the liquid of heating room (202) and is sent to the controller
(101)；
The controller (101), for sending the order for starting the heater (201) to the switch module (102), according to
The temperature change parameter of the liquid in the temperature computation preset time period received, and judge the switch module (102)
Feedback states, and it is whether former based on heater (201) described in the feedback states and the temperature change parameter decision judged
Barrier, wherein the feedback states include the controller (101) receive the switch module (102) open feedback signal or
What controller described in person (101) did not received the switch module (102) opens feedback signal.
2. detection maintenance system according to claim 1, which is characterized in that the controller (101) is additionally operable to：
When the feedback states be the controller (101) receive it is described open feedback signal when, judge temperature change ginseng
Whether number is less than preset value；
If the temperature change parameter is less than the preset value, the heater (201) failure is judged；
If the temperature change parameter is greater than or equal to the preset value, judge that the heater (201) is normal；
When the feedback states be the controller (101) do not receive it is described open feedback signal when, judge the temperature change
Whether parameter is less than the preset value；
If the temperature change parameter is less than the preset value, the heater (201) failure is judged；
If the temperature change parameter is greater than or equal to the preset value, judge that the heater (201) is normal.
3. detection maintenance system according to claim 2, which is characterized in that the controller (101) is additionally operable to：
When the feedback states be the controller (101) receive it is described open feedback signal when, judge the switch module
(102) normal；
When the feedback states be the controller (101) do not receive it is described open feedback signal when, judge the temperature change
Whether parameter is less than the preset value；
If the temperature change parameter is greater than or equal to the preset value, the switch module (102) failure is judged.
4. detecting maintenance system according to claim 1-3 any one of them, which is characterized in that the temperature detector includes setting
Set the outlet temperature detector (103) connecting at the outlet (204) and with the controller (101), wherein
The outlet temperature detector (103), for detecting the temperature for exporting the liquid at (204) and being sent to the control
Device (101) processed.
5. detection maintenance system according to claim 4, which is characterized in that the outlet temperature detector (103) is also used
In：
When the controller (101) sends out the order for starting the heater (201), measure at the outlet (204)
Liquid the first temperature and be sent to the controller (101), and after waiting for the preset time period, measure the outlet
(204) second temperature of the liquid at is simultaneously sent to the controller (101).
6. detection maintenance system according to claim 5, which is characterized in that the controller (101) is additionally operable to：
The temperature of the liquid in the preset time period is calculated according to the first temperature received and the second temperature received
Running parameter.
7. detection maintenance system according to claim 2 or 3, which is characterized in that the temperature change parameter includes temperature
Change rate, the preset value include preset temperature change rate.
8. detection maintenance system according to claim 2, which is characterized in that the controller (101) is additionally operable to：
Temperature needed for the temperature change parameter and the preset value and/or the generating set judges whether to need
Adjust the power of the heater (201)；
When judgement needs to adjust the power of the heater (201), to the heater (201) transmission power adjust instruction.
9. detection maintenance system according to claim 5, which is characterized in that the temperature detector further includes being arranged in institute
The inlet temperature detector (104) stated at import (203) and connect with the controller (101), the import (203) and described
It exports (204) by external pipe to be connected, makes the liquid according to by the import (203) to the direction of the outlet (204)
It circulates, wherein
The inlet temperature detector (104), third temperature for measuring the liquid at the import (203) are simultaneously sent to institute
State controller (101)；
The controller (101) is additionally operable to execute one or more in following judgement：
When the second temperature is less than or equal to the third temperature, the inlet temperature detector (104) and described is judged
The installation position of outlet temperature detector (103) is opposite；
When the second temperature is more than the third temperature and first temperature, judge that the detection maintenance system is normal；
When the second temperature is more than the third temperature and is less than or equal to first temperature, the external pipe is judged
Failure.
10. detection maintenance system according to claim 1, which is characterized in that the controller (101) is additionally operable to：
Receive the temperature of the liquid of the temperature detector detection；
Temperature needed for the temperature of the liquid of temperature detector detection and the generating set, which determines, to start or closes
The heater (201).
11. the detection maintaining method of heater in a kind of generating set, which is characterized in that for any one of claim 1 to 8 institute
The detection maintenance system stated, wherein the liquid is flowed from the import (203) to the outlet (204), the method packet
It includes：
The controller (101) sends the order for starting the heater (201) to the switch module (102)；
The temperature detector detects the temperature of the liquid and is sent to the controller (101)；
The controller (101) is according to the temperature change parameter of the liquid in the temperature computation preset time period received；
The controller (101) judges that the feedback states of the switch module (102), the feedback states include the controller
(101) receive the switch module (102) open feedback signal or the controller (101) does not receive the switch module
(102) open feedback signal；
The controller (101) is based on heater (201) described in the feedback states and the temperature change parameter decision judged
Whether failure.
12. detection maintaining method according to claim 11, which is characterized in that the controller (101) is based on being judged
Feedback states and the temperature change parameter decision described in heater (201) whether failure includes：
When the feedback states are that the controller (101) receives the feedback signal, judge that the temperature change parameter is
It is no to be less than preset value；
If the temperature change parameter is less than the preset value, the heater (201) failure is judged；
If the temperature change parameter is greater than or equal to the preset value, judge that the heater (201) is normal；
When the feedback states are that the controller (101) does not receive the feedback signal, the temperature change parameter is judged
Whether the preset value is less than；
If the temperature change parameter is less than the preset value, the heater (201) failure is judged；
If the temperature change parameter is greater than or equal to the preset value, judge that the heater (201) is normal.
13. detection maintaining method according to claim 12, which is characterized in that the method further includes：
When the feedback states are that the controller (101) receives the feedback signal, the switch module (102) is being judged just
Often；
When the feedback states are that the controller (101) does not receive the feedback signal, the temperature change parameter is judged
Whether the preset value is less than；
If the temperature change parameter is greater than or equal to the preset value, the switch module (102) failure is judged.
14. detecting maintaining method according to claim 11-13 any one of them, the temperature detector includes being arranged described
The outlet temperature detector (103) connecting at outlet (204) and with the controller (101), which is characterized in that the temperature inspection
It surveys device and detects the temperature of the liquid and be sent to the controller (101) and include：
The temperature of liquid at outlet temperature detector (103) the detection outlet (204) is simultaneously sent to the controller
(101)。
15. detection maintaining method according to claim 14, which is characterized in that outlet temperature detector (103) inspection
It surveys the temperature for exporting the liquid at (204) and is sent to the controller (101) and include：
When the controller (101) sends out the order for starting the heater (201), the outlet temperature detector
(103) it measures the first temperature of the liquid at the outlet (204) and is sent to the controller (101)；
After waiting for the preset time period, the outlet temperature detector (103) measures the liquid at the outlet (204)
Second temperature is simultaneously sent to the controller (101).
16. detection maintaining method according to claim 15, the controller (101) is pre- according to the temperature computation received
If the temperature change parameter of the liquid includes in the period：
The controller (101) calculates described in preset time period according to the first temperature received and the second temperature received
The temperature change parameter of liquid.
17. detecting maintaining method according to claim 12 or 13, which is characterized in that the temperature change parameter includes temperature
Change rate is spent, the preset value includes preset temperature change rate.
18. detection maintaining method according to claim 17, which is characterized in that the method further includes：
The controller (101) is according to needed for the temperature change parameter and the preset value and/or the generating set
Temperature judges whether to need to adjust the power of the heater (201), and works as the power for needing to adjust the heater (201)
When, to the heater (201) transmission power adjust instruction.
19. detection maintaining method according to claim 15, the temperature detector further includes being arranged in the import
(203) the inlet temperature detector (104) being connect at and with the controller (101), the import (203) and the outlet
(204) it is connected by external pipe, which is characterized in that the method further includes：
After waiting for the preset time period, the inlet temperature detector (104) measures the liquid at the import (203)
Third temperature is simultaneously sent to the controller (101)；
The controller (101) executes following one or more in judging：
When the second temperature is less than or equal to the third temperature, the inlet temperature detector (104) and described is judged
The installation position of outlet temperature detector (103) is opposite；
When the second temperature is more than the third temperature and first temperature, judge that the detection maintenance system is normal；
When the second temperature is more than the third temperature and is less than or equal to first temperature, the external pipe is judged
Failure.
20. detection maintaining method according to claim 11, which is characterized in that the method further includes：
The controller (101) receives the temperature of the liquid of the temperature detector detection, and is examined according to the temperature detector
Temperature needed for the temperature of the liquid of survey and the generating set, which determines, starts or closes the heater (201).
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| CN201611144015.0A CN106527320B (en) | 2016-12-12 | 2016-12-12 | Detection and maintenance system and method for heater in generator set |
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| CN201611144015.0A CN106527320B (en) | 2016-12-12 | 2016-12-12 | Detection and maintenance system and method for heater in generator set |
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| CN111351309B (en) * | 2020-03-11 | 2022-04-15 | 合肥美的电冰箱有限公司 | Refrigeration equipment and fault detection method, control method and processing device thereof |
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| US5442157A (en) * | 1992-11-06 | 1995-08-15 | Water Heater Innovations, Inc. | Electronic temperature controller for water heaters |
| CN1664732A (en) * | 2004-03-04 | 2005-09-07 | 欧姆龙株式会社 | Control circuit and power control apparatus having the control circuit |
| CN102967100A (en) * | 2012-11-26 | 2013-03-13 | 无锡马山永红换热器有限公司 | Wind turbine generator system-cooling system |
| CN104518618A (en) * | 2013-09-27 | 2015-04-15 | 株式会社安川电机 | Wind power generation system, method for controlling wind power generation system, rotary electric machine system, and control device for rotary electric machine |
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|---|---|---|---|---|
| US5442157A (en) * | 1992-11-06 | 1995-08-15 | Water Heater Innovations, Inc. | Electronic temperature controller for water heaters |
| CN1664732A (en) * | 2004-03-04 | 2005-09-07 | 欧姆龙株式会社 | Control circuit and power control apparatus having the control circuit |
| CN102967100A (en) * | 2012-11-26 | 2013-03-13 | 无锡马山永红换热器有限公司 | Wind turbine generator system-cooling system |
| CN104518618A (en) * | 2013-09-27 | 2015-04-15 | 株式会社安川电机 | Wind power generation system, method for controlling wind power generation system, rotary electric machine system, and control device for rotary electric machine |
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