CN106527320A - 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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- CN106527320A CN106527320A CN201611144015.0A CN201611144015A CN106527320A CN 106527320 A CN106527320 A CN 106527320A CN 201611144015 A CN201611144015 A CN 201611144015A CN 106527320 A CN106527320 A CN 106527320A
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- 238000001514 detection method Methods 0.000 title claims abstract description 99
- 238000012423 maintenance Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 151
- 230000008859 change Effects 0.000 claims abstract description 121
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 230000008676 import Effects 0.000 claims description 33
- 238000005259 measurement Methods 0.000 claims description 9
- 241000208340 Araliaceae Species 0.000 claims 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 2
- 235000008434 ginseng Nutrition 0.000 claims 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007654 immersion Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 239000002826 coolant Substances 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
- 239000012530 fluid Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
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- Control Of Temperature (AREA)
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 the detection maintenance system of heater and side in field of power, more particularly to a kind of generating set
Method.
Background technology
Wind power generating set is typically installed at the wild environment of environmental condition rather harsh, and the temperature in the winter time having can be low
In -20 DEG C, in order to ensure the normal operation of wind power generating set internal unit, need to carry out temperature using heater to unit inside
Degree control.The converter part of wind power generating set carries out temperature control using water circulation system, wherein water-cooling heating device by with
Water in heating water circulating system so that the water temperature in water-cooling system is improved, and heats current transformer.In water-cooling system
Water is in the confined space of water-cooling system, with the external world there is no fluid exchange so that the 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 enabled instruction after, switch in switch module closure, heater are connected start-up operation with power supply, and PLC is logical
The feedback signal crossed after receiving switch module breaker in middle closure is connected start-up operation confirming heater with power supply.But, in reality
In the running of border, when in switch module, there is the situation of wiring loosening in circuit, although heater is connected beginning work with power supply
Make, but PLC cannot receive the feedback signal of switch module, PLC does not receive the feedback signal of switch module, think heater event
Hinder and produce alarm, i.e. PLC and false alarm is produced because switch module is abnormal.Now no matter alarm is true and false, and generating set is both needed to
Want emergency shutdown to protect unit safety to operate, so as to seriously reduce the utilization rate of generating set.
The content of the invention
A kind of detection maintenance system of wind power generating set water-cooling heating device and method is embodiments provided, 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 invention provides in a kind of generating set heater detection maintenance system, including：Controller,
Switch module and temperature detector；
Switch module starts or closes heater by receiving the switch order that controller sends, and wherein, heater is extremely
In the indoor liquid of few a part of immersion heating, heating chamber is provided with the import and going out for liquid outflow flowed into for liquid
Mouthful；
Temperature detector, is provided to the temperature of the liquid of detection heating chamber and is sent to controller；
Controller, for sending the order for starting heater to switch module, when presetting according to the temperature computation for being received
Between in section liquid temperature change parameter, and judge the feedback states of switch module, and based on the feedback states for being judged and
Temperature variation judges heater whether failure, and wherein, feedback states include that what controller received switch module opens 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 feedback states receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is more than or equal to preset value, judge that heater is normal；
When feedback states do not receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is more than or equal to preset value, judge that heater is normal.
Above-mentioned aspect of the invention, method also include：
When feedback states receive feedback signal for controller, 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 more than or equal to preset value, judge that switch module is normal；
When feedback states do not receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is more than or equal to preset value, switch module failure is judged.
Above-mentioned aspect of the invention, temperature detector include the outlet temperature for being arranged on exit and being connected with controller
Degree detector, wherein,
Outlet temperature detector, for detecting the temperature of the liquid in exit and being sent to controller.
Above-mentioned aspect of the invention, outlet temperature detector are additionally operable to：
When controller sends starts the order of heater, measure the first temperature of the liquid in exit and be sent to control
Device, and after preset time period is waited, measure the second temperature of the liquid in exit and be sent to controller.
Above-mentioned aspect of the invention, controller are additionally operable to：
The temperature change of liquid in preset time period is calculated according to the first temperature for being received and the second temperature for being received
Parameter.
Above-mentioned aspect of the invention, temperature change parameter include rate of temperature change, and preset value includes that preset temperature becomes
Rate.
Above-mentioned aspect of the invention, the controller are additionally operable to：
According to the temperature change parameter, and the preset value and/or the temperature needed for the generating set judge be
The no power for needing to adjust the heater；
When needing to adjust the power of the heater, to the heater transmit power adjust instruction.
Above-mentioned aspect of the invention, temperature detector also include the import for being arranged on entrance and being connected with controller
Temperature detector, inlet and outlet by external pipe be connected, make liquid according to by import to export direction circulate, its
In,
Inlet temperature detector, for measuring the 3rd temperature of the liquid of entrance and being sent to controller；
Controller is additionally operable to perform one or more in following judgement：
When second temperature is less than or equal to three temperature, setting for inlet temperature detector and outlet temperature detector is judged
Seated position is contrary；
When second temperature is more than the 3rd temperature and the first temperature, judge that detection maintenance system is normal；
When second temperature is more than the 3rd temperature and is less than or equal to the first temperature, external pipe failure is judged.
Above-mentioned aspect of the 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 invention provides a kind of detection maintaining method of wind power generating set water-cooling heating device, for
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；
Temperature change parameter of the controller according to liquid in the temperature computation preset time period for being received；
Controller judges the feedback states of switch module, and feedback states include that what controller received switch module opens feedback
What signal or controller did not received switch module opens feedback signal；
Controller is based on the feedback states and temperature change parameter decision heater for being judged whether failure.
According to the second aspect of the invention, in controller acquisition preset time period, the temperature variation of liquid includes：
Based on the feedback states and temperature change parameter decision heater for being judged, whether failure includes controller：
When feedback states receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is more than or equal to preset value, judge that heater is normal；
When feedback states do not receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is less than preset value, heater failure is judged；
If temperature change parameter is more than or equal to preset value, judge that heater is normal.
Above-mentioned aspect of the invention, method also include：
When feedback states receive feedback signal for controller, 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 more than or equal to preset value, judge that switch module is normal；
When feedback states do not receive feedback signal for controller, judge temperature change parameter whether less than preset value；
If temperature change parameter is more than or equal to preset value, switch module failure is judged.
Above-mentioned aspect of the invention, temperature detector detects the temperature of liquid and is sent to controller to be included：
The temperature of the liquid in outlet temperature detector detection exit is simultaneously sent to controller.
Above-mentioned aspect of the invention, the temperature of the liquid in outlet temperature detector detection exit are simultaneously sent to control
Device includes：
When controller sends starts the order of heater, the first of the liquid in outlet temperature detectors measure exit is warm
Spend and be sent to controller；
After preset time period is waited, the second temperature of the liquid in outlet temperature detectors measure exit is simultaneously sent to control
Device processed.
Above-mentioned aspect of the invention, temperature of the controller according to liquid in the temperature computation preset time period for being received
Running parameter includes：
Controller calculates the temperature of liquid in preset time period according to the first temperature for being received and the second temperature for being received
Degree running parameter.
Above-mentioned aspect of the invention, temperature change parameter include rate of temperature change, and preset value includes that preset temperature becomes
Rate.
Above-mentioned aspect of the invention, methods described also include：
The controller is according to needed for the temperature change parameter, and the preset value and/or the generating set
Temperature judges whether the power for needing to adjust the heater, and when needing to adjust the power of the heater, to described
Heater transmit power adjust instruction.
Above-mentioned aspect of the invention, method also include：
After preset time period is waited, the 3rd temperature of the liquid of inlet temperature detectors measure entrance is simultaneously sent to control
Device processed；
Controller performs one or more in following judgement：
When second temperature is less than or equal to three temperature, setting for inlet temperature detector and outlet temperature detector is judged
Seated position is contrary；
When second temperature is more than the 3rd temperature and the first temperature, judge that detection maintenance system is normal；
When second temperature is more than the 3rd temperature and is less than or equal to the first temperature, external pipe failure is judged.
Above-mentioned aspect of the invention, methods described also 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 the generating set needed for temperature determine start or close the heater.
Detection maintaining method and the system of heater in a kind of generating set is embodiments provided, is examined in the present invention
At least a portion immersion for surveying heater in maintenance system accommodates the heating interior of liquid, and heating chamber is provided with inlet and outlet,
Heating chamber is flowed liquid into and flows out, so at heater operating room, the liquid in heating chamber is by carrying out heat with heater
Transmission and temperature changes, by temperature detector detect liquid temperature and be 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 the temperature change parameter decision heater of the feedback states and liquid by switch module whether failure.Thus,
Controller is combined by the temperature change parameter by the feedback states and liquid of switch module carries out multi-level heater detection
Safeguard, it is ensured that the accuracy that heater detection is safeguarded, it is to avoid controller makes a mistake warnings, and then reduction generating set promptly stops
Machine the progressively situation of investigation generation failure cause, so that improve the utilization rate of generating set.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to making needed for the embodiment of the present invention
Accompanying 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, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying 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- heating chambers；203- imports；204- is exported.
Specific embodiment
For making purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the application in detail.
In the embodiment of the present invention in generating set the detection maintenance system and method for heater in generating set plus
Hot device carries out detection maintenance, specifically can be used for carrying out detection 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 for carrying out detection maintenance to heater in Fig. 1 201, soak by least a portion of heater 201
Enter in the liquid in heating chamber 202, the heating chamber 202 is provided with for the import 203 of liquid inflow and flows out for liquid
Outlet 204.Detection maintenance system includes controller 101, switch module 102 and temperature detector, and switch module 102 is by connecing
The instruction that admission controller 101 sends starts or closes heater 201, accommodates liquid in heating chamber 202, and heating chamber 202 sets
The import 203 flowed into for liquid and the outlet 204 flowed out for liquid is equipped with, temperature detector is connected with controller 101, quilt
The temperature of the liquid for arranging to detect heating chamber 202 is simultaneously sent to controller 101.
Wherein, controller 101 controls the startup and cut out of heater 201 by switch module 102, and switch module 102 leads to
The enabled instruction startup heater 201 for receiving that controller 101 sends is crossed, and the closing sent by receiving controller 101 refers to
Heater 201 is closed in order.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 that judged and temperature change parameter decision heater 201 whether failure.Feedback states include that controller 101 is received
Switch module 102 open feedback signal or controller 101 does not receive switch module 102 opens feedback signal.
It should be noted that when heater 201 works, the heat of its heating can transmit liquid, make the temperature of liquid
Change.In inventive embodiments, the transmission how heater 201 carries out heat with liquid is not limited, and can adopt energy
Enough various methods realized, for example, by least a portion immersion liquid of heater 201.The embodiment of the present invention is with heater
Realize illustrating as a example by the mode of the transmission of heat between heater 201 and liquid in 201 at least a portion immersion liquid.
Specifically, controller 101 sends enabled instruction to switch module 102, the switch closure in switch module 102, makes
Heater 201 switches on power start-up operation, forms loop, control after 102 breaker in middle of switch module closure together with controller 101
Device 101 receives opening for switch module 102 by open feedback signal, the i.e. controller 101 that this loop receives switch module 102
Logical feedback signal, then illustrate heater 201 and power on, and what controller 101 did not received switch module 102 opens feedback letter
Number, then illustrate heater 201 may not with power on；Heater 201 switches on power start-up operation, liquid in control room 103
Entered by import 203, then flowed out by outlet 204, during liquid flows, heat transfer is carried out with heater 201.If plus
There is temperature after heat transfer in heating chamber 202 with heater 201 and change in 201 normal work of hot device, liquid；If heating
201 failure of device, liquid will not change in the temperature in heating chamber 202.In sum, controller 101 is according to temperature detection
Device send temperature computation preset time period in liquid temperature change parameter, and judge whether receive switch module
102 open feedback signal, detect whether heater 201 breaks down.
In the detection maintenance system of the embodiment of the present invention, controller 101 is by by the feedback states and liquid of switch module 102
The temperature change parameter of body is combined carries out the multi-level detection maintenance of heater 201, it is ensured that it is accurate that the detection of heater 201 is safeguarded
Property, it is to avoid controller 101 makes a mistake warning, and then reduce generating set emergency shutdown and progressively investigation to produce failure former
The situation of cause, so that improve the utilization rate of generating set.
Meanwhile, in the prior art, after controller 101 sends startup order, 102 breaker in middle of control module closure, plus
Hot device 201 switches on power, and forms loop after 102 breaker in middle of switch module closure together with controller 101, and controller 101 passes through
Loop receives switch module 102 and opens feedback information, and controller 101 thinks that heater 201 has started to.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 cannot normal heating, and controller 101 have received switch module 102 open feedback information after
Think the normal work of heater 201, in this case it is not apparent that heater 201 has occurred and that failure, so alarm would not be also sent,
Now generating set is also considered as heater 201 and works, but as 201 failure of heater is not heated, then generating set
The equipment such as internal current transformer do not reach required temperature, have had a strong impact on the normal operation of generating set.The embodiment of the present invention
Detection maintenance system in combined by temperature change parameter by the feedback states and liquid of switch module 102 carry out it is multi-level
Heater 201 detection safeguard, the failure of heater 201 can be found in time, it is to avoid controller 101 does not find heater
201 failures and do not send the situation of warning, and then avoid the equipment such as current transformer inside generating set do not reach required for temperature
Affect the situation of the normal operation of generating set, it is ensured that the normal operation of generating set, improve the utilization rate of generating set.
It is understood that the concrete mode of detection 201 failure of heater of controller 101 shown in Fig. 1 can following mistake
Journey.
Controller 101 can be also used for：When feedback states are received for controller 101 opens feedback signal, temperature is judged
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
Degree running parameter is more than or equal to preset value, then judge that heater 201 is normal；And when feedback states are not received for controller 101
When feedback signal is opened, judge temperature change parameter whether less than preset value；If temperature change parameter is less than preset value,
Judge 201 failure of heater；If temperature change parameter is more than or equal to preset value, judge that heater 201 is normal.
Wherein, change temperature of liquid in preset time period when preset value is 201 normal work of heater set in advance
Temperature change parameter minima.When feedback states receive feedback signal for controller 101, show that controller 101 is received
Switch module 102 opens feedback signal, i.e. heater 201 and power on, if now temperature change parameter be more than or
Equal to preset value, then 201 normal work of heater is illustrated；If temperature change parameter is less than preset value, heater 201 is illustrated
There occurs failure.When feedback states do not receive feedback signal for controller 101, show that controller 101 does not receive switching molding
Block 102 opens feedback signal, and what controller 101 did not received switch module 102 is probably to open the reason for opening feedback signal
Close 102 failure of module, it is also possible to 201 failure of heater, if so now temperature change parameter be more than or equal to preset value,
201 normal work of heater is illustrated then；If temperature change parameter is less than preset value, illustrate that heater 201 there occurs failure.
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 is safeguarded to the detection of heater 201, it is ensured that 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 with reference to detecting to whether switch module 102 breaks down.Concrete mode is：When feedback states are
Controller 101 is received when opening feedback signal, judges that switch module 102 is normal；When feedback states are not received out for controller 101
During logical feedback signal, judge temperature change parameter whether less than preset value；If temperature change parameter is more than or equal to preset value,
Then judge 102 failure of switch module.
Wherein, when feedback states are received for controller 101 opens feedback signal, show that controller 101 have received out
Close module 102 to open feedback signal, i.e. switch module 102 normal.Open instead when feedback states are not received for controller 101
During 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 is probably 102 failure of switch module the reason for opening feedback signal, it is also possible to 201 failure of heater, so this
When judge temperature change parameter whether less than preset value, if temperature change parameter is more than or equal to preset value, show now plus
Hot device 201 is normal, then judge 102 failure of switch module.
In the detection maintenance system of the embodiment of the present invention, controller 101 is by by the feedback states and liquid of switch module 102
The temperature change parameter of body is combined and can also carry out detection maintenance to switch module 102, it is to avoid controller 101 is because switch module
102 failures and the warning that makes a mistake, and then generating set emergency shutdown is reduced, so as to improve the utilization rate of generating set, and lead to
Above-mentioned reckoning progressively is crossed, failure real causess can be found, lower difficulty and time that staff safeguards.
It is understood that temperature detector can be arranged on any position that can detect temperature of liquid, but due to
Liquid is flowed into by import 203, is flowed out by outlet 204 again, in order to ensure temperature detection in heating chamber 202 after there is heat transfer
Accuracy, can be arranged on temperature detector in heating chamber 202 or near the position of outlet 204.But liquid is generally close
Be enclosed in heating chamber 202, if temperature detector is arranged in heating chamber 202, the sealing effectiveness of heating chamber 202 can be produced
Affect.So, temperature detector includes being arranged on the outlet temperature detector 103 being connected at outlet 204 and with controller 101.
Outlet temperature detector 103, for detecting the temperature of the liquid at outlet 204 and being sent to controller 101.
Specifically, outlet temperature detector 103 is additionally operable to：When controller 101 sends starts the order of heater 201,
First temperature of the liquid at measurement outlet 204 is simultaneously sent to controller 101, and after preset time period is waited, measurement outlet
The second temperature of the liquid at 204 is simultaneously sent to controller 101.
By detection of the said process outlet temperature detector 103 to temperature of liquid, controller 101 can calculate liquid
The temperature change produced due to heater 201.I.e. controller 101 is additionally operable to：According to the first temperature for being received and received
Second temperature calculate preset time period in liquid temperature change parameter.
It should be noted that temperature change parameter can include temperature variation and rate of temperature change, when temperature change is joined
When number is temperature variation, when preset value is 201 normal work of heater set in advance, in preset time period, temperature of liquid is made
The minima of the temperature variation of change；When temperature change parameter is rate of temperature change, preset value is preset temperature rate of change,
I.e. 201 normal work of heater set in advance when preset time period in make temperature of liquid change rate of temperature change minimum
Value.Controller 101 can pass through the difference of the first temperature and second temperature and calculate temperature variation, can also by the first temperature and
The difference of second temperature draws rate of temperature change in the time span in preset time period.
It is understood that controller 101 can be with according to the temperature change parameter, and preset value and/or generating
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 transmit power adjust instruction of heater.
Wherein, heater 201 can also be the heater that can adjust power, so controller 101 can be according to calculating
Temperature change parameter, and preset value and/or the temperature needed for generating set judge whether to need to adjust the work(of heater 201
Rate.
Specifically, may determine that when temperature change parameter is more than preset value that heater is normal, now controller 101 can be with
The power of heater 201 is adjusted.For example, controller 101 increases the power of heater 201, makes heater 201 accelerate to produce
The speed of heat amount, and then the speed that accelerating liquid temperature rises.In addition, heater 201 can be with according to the temperature change for calculating
Temperature required for rate and generating set judges whether the power for needing to adjust heater 201.For example, 101 basis of controller
Temperature required for the temperature of current liquid and generating set can determine that temperature difference, if temperature difference is larger, controller 101
The power of heater 201 can be increased, make heater 201 accelerate produce heat speed, and then accelerating liquid temperature rise
Speed；If temperature difference is less, controller 101 can reduce the power of heater 201, make heater 201 reduce producing heat
Speed, temperature of liquid is slowly increased, it is to avoid as the power of heater 201 is excessive, to cause temperature of liquid to rise rapidly, enter
And temperature is too high in making generating set, the situation impacted by generating set.
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
The current state of row situation and heater is adjusted to 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 by switch module 102 to heater 201
Send power adjustment instruction, it is also possible to by miscellaneous part or directly to 201 transmit power adjust instruction of heater.
In the generating set that Fig. 2 shows according to further embodiment of this invention, the detection maintenance system of heater 201 shows
Meaning property structure chart.Detection maintenance system as shown in Figure 2, on the basis of maintenance system is detected shown in Fig. 1, at import 203
The inlet temperature detector 104 being connected with controller 101 is set, and import 203 is connected by external pipe with outlet 204,
Make liquid according to by import 203 to outlet 204 direction circulate.
Wherein, the inlet temperature detector 104 being connected with controller 101 is set at import 203, and such controller 101 leads to
Cross inlet temperature detector 104 and can detect temperature of the liquid at import 203, by inlet temperature detector 104 is detected
The temperature that detects with outlet temperature detector 103 of temperature contrasted, it may be determined that go out whether heater 201 works, and
Whether detection maintenance system is normal.In addition, import 203 and outlet 204 can be connected by generating set by external pipe, liquid is made
Body is in the external pipe according to being circulated to the direction of outlet 204 by import 203.Now, 101 inlet temperature of controller detection
The temperature that the temperature of the detection of device 104 is detected with outlet temperature detector 103 is contrasted, and not only can determine heater 201
Whether work, it may also be determined that whether external pipe exception occurs, find failure in time and processed, improve generating set
Utilization rate.
Specifically, when controller 101 sends starts the order of heater 201, the measurement outlet of outlet temperature detector 103
First temperature of the liquid at 204 is simultaneously sent to controller 101.And after preset time period is waited, outlet temperature detector 103
The second temperature of the liquid at measurement outlet 204 is simultaneously sent to controller 101, at the measurement import 203 of inlet temperature detector 104
Liquid the 3rd temperature and be sent to controller 101.Controller 101 is additionally operable to perform one or more in following judgement：
When second temperature is less than or equal to three temperature, the setting of inlet temperature detector 104 and outlet temperature detector 103 is judged
Position is contrary；When second temperature is more than the 3rd temperature and the first temperature, judge that detection maintenance system is normal；When second temperature it is big
In the 3rd 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 according to needed for the temperature of the liquid of temperature detector detection and generating set determines startup or closes heater
201。
Wherein, controller 101 can determine the temperature of liquid in real time by the temperature for receiving the liquid of temperature detector detection
Spend, and then the temperature according to needed for the temperature of liquid and generating set is compared, it can be deduced that whether the temperature of liquid meets
Generating set temperature normally needed for operation, and then determine startup or close heater 201.For example, if heater 201 is not opened
When dynamic, the temperature of liquid then can determine startup heater 201 less than the temperature needed for generating set, to switch module 102
Send the order for starting heater 201；If the temperature of the liquid in the course of the work of heater 201 is higher than the temperature needed for generating set
Degree, illustrates temperature of the liquid needed for generating set, and heater 201 need not continue heating, then can determine that closing adds
Hot device 201, sends the order for cutting out heater 201 to switch module 102.
Can be started according to the temperature of liquid in real time by said process controller 101 or close heater 201, it is to avoid
Temperature of liquid reduction, heater 201 can not start in time and affect the normal situation about running of generating set, and avoid liquid
Temperature needed for generating set, heater can not be closed in time, and cause the situation of the wasting 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 detection maintenance system shown in Fig. 1 or Fig. 2.In detection maintenance system, heating
In room 202, liquid is flowed from import 203 to outlet 204, as shown in figure 3, the method includes：Step 301, controller 101 is to opening
Close module 102 and send the order for starting heater 201；Step 302, the temperature of temperature detector detection liquid are simultaneously sent to control
Device 101；Step 303, temperature change parameter of the controller 101 according to liquid in the temperature computation preset time period for being received；Step
Rapid 304, controller 101 judges the feedback states of switch module 102, and feedback states include that controller 101 receives switch module 102
Open feedback signal or controller 101 does not receive switch module 102 opens feedback signal；Step 305, controller 101
Based on the feedback states and temperature change parameter decision heater 201 for being judged whether failure.
Specifically, step 305 can specifically perform and be：Step 3051, when feedback states receive feedback letter for controller 101
Number when, judge temperature change parameter whether less than preset value；Step 3052, if temperature change parameter is less than preset value, sentences
Determine 201 failure of heater；Step 3053, if temperature change parameter is more than or equal to preset value, is just judging heater 201
Often；Whether step 3054, when feedback states do not receive feedback signal for controller 101, judge temperature change parameter less than pre-
If value；Step 3055, if temperature change parameter is less than preset value, judges 201 failure of heater；Step 3056, if warm
Degree running parameter is more 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- step 305 is referred to retouching in embodiment illustrated in fig. 1
State, will not be described here.
Used as an optional embodiment, in generating set, the detection maintaining method of heater 201 can also include：Step
306, when feedback states receive feedback signal for controller 101, judge that switch module 102 is normal；Step 307, when feedback shape
When state does not receive feedback signal for controller 101, judge temperature change parameter whether less than preset value；Step 308, if temperature
Running parameter is more than or equal to preset value, then judge 102 failure of switch module.
It should be noted that the data processing principle of step 306- step 308 is referred to retouching in embodiment illustrated in fig. 1
State, will not be described here.
It is understood that step 302 can be performed being：Liquid at the detection of outlet temperature detector 103 outlet 204
Temperature is simultaneously sent to controller 101.
Specifically, when controller 101 sends starts the order of heater 201, the measurement outlet of outlet temperature detector 103
First temperature of the liquid at 204 is simultaneously sent to controller 101；After preset time period is waited, outlet temperature detector 103 is surveyed
Measure the second temperature of the liquid at mouth 204 and be sent to controller 101.
Further, step 303 can perform and be：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 rate of change.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, will not be described here.
It is understood that the detection maintaining method of heater 201 also includes in the generating set of the embodiment of the present invention：Control
Device processed 101 judges whether to need adjustment heating according to temperature change parameter, and preset value and/or the temperature needed for generating set
The power of device 201, and when needing to adjust the power of heater 201, to 201 transmit 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, will not be described here.
Outlet temperature detector 103 detects the first temperature and second temperature and is sent to controller 101 in step 302
Afterwards, the method also includes：Step 309, the liquid after preset time period is waited, at the measurement import 203 of inlet temperature detector 104
3rd temperature of body is simultaneously sent to controller 101；Step 310, controller 101 perform one or more in following judgement：When
When second temperature is less than or equal to three temperature, the setting position of inlet temperature detector 104 and outlet temperature detector 103 is judged
Put contrary；When second temperature is more than the 3rd temperature and the first temperature, judge that detection maintenance system is normal；When second temperature is more than
3rd temperature and less than or equal to the first temperature when, judge external pipe failure.
Wherein, liquid is circulated to 204 directions are exported according to by import 203, then temperature of the liquid at import 203
Can change, but if 201 normal work of heater, temperature of the liquid at outlet 204 should be raised and more than import 203
The temperature at place, i.e. second temperature are more than the 3rd temperature and the first temperature.If so second temperature is more than the 3rd temperature and first
Temperature, then judge that detection maintenance system is normal；If second temperature is less than or equal to the 3rd temperature, the i.e. temperature of liquid outlet 204
Temperature of the degree less than import 203, then be now possible to import 203 and export 204 reversed with external pipe cause liquid by going out
Mouth 204 flows into heating chambers 201, flows out heating chamber 202 by import 203, or is possible to inlet temperature detector 104 and outlet temperature
The set location of degree detector 103 is contrary so that the detection of inlet temperature detector 104 is temperature of the liquid at outlet 204
Degree, the detection of outlet temperature detector 103 is temperature of the liquid at import 203；If second temperature be more than the 3rd 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 also includes in the generating set of the embodiment of the present invention：Control
Device processed 101 receives the temperature of the liquid of temperature detector detection, and temperature and the generating of the liquid detected according to temperature detector
Temperature needed for unit determines startup or closes heater 201.
Wherein, controller 101 can determine the temperature of liquid in real time by the temperature for receiving the liquid of temperature detector detection
Spend, and then the temperature according to needed for the temperature of liquid and generating set is compared, it can be deduced that whether the temperature of liquid meets
Generating set temperature normally needed for operation, and then determine startup or close heater 201.For example, if heater 201 is not opened
When dynamic, the temperature of liquid then can determine startup heater 201 less than the temperature needed for generating set, to switch module 102
Send the order for starting heater 201；If the temperature of the liquid in the course of the work of heater 201 is higher than the temperature needed for generating set
Degree, illustrates temperature of the liquid needed for generating set, and heater 201 need not continue heating, then can determine that closing adds
Hot device 201, sends the order for cutting out heater 201 to switch module 102.
Can be started according to the temperature of liquid in real time by said process controller 101 or close heater 201, it is to avoid
Temperature of liquid reduction, heater 201 can not start in time and affect the normal situation about running of generating set, and avoid liquid
Temperature needed for generating set, heater can not be closed in time, and cause the situation of the wasting of resources.
It should be noted that when carrying out detection to water-cooling heating device in wind power generating set in above-described embodiment and safeguarding, plus
Liquid in hot cell 202 can be water work coolant etc., and controller can be PLC.
In embodiments of the invention, unless otherwise clearly defined and limited, term " being connected ", " connection " should do broad sense reason
Solution, for example, it may be being fixedly connected, or being detachably connected, or is integrally connected；Can be mechanically connected, it is also possible to
It is electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary.For one of ordinary skill in the art
Speech, visual concrete condition understand above-mentioned term concrete meaning in the present invention.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or replacement should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
The protection domain of requirement is defined.
Claims (20)
1. in a kind of generating set heater detection maintenance system, it is characterised in that the detection maintenance system includes：Control
Device (101), switch module (102) and temperature detector；
Described switch module (102) are by receiving the instruction startup or close the heater that controller (101) send
(201), wherein, heating chamber (202) are provided with the import (203) flowed into for liquid and the outlet flowed out for liquid
(204)；
The temperature detector, the temperature of the liquid for being provided to detect the heating chamber (202) are simultaneously sent to the controller
(101)；
Controller (101), for sending the order for starting heater (201) to the switch module (102), according to
The temperature change parameter of the liquid in the temperature computation preset time period for being received, and judge the switch module (102)
Feedback states, and based on the feedback states for being judged and heater (201) described in the temperature change parameter decision whether therefore
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, it is characterised in that controller (101) are additionally operable to：
When the feedback states for 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 more than or equal to the preset value, judge that the heater (201) is normal；
When the feedback states for 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 more than or equal to the preset value, judge that the heater (201) is normal.
3. detection maintenance system according to claim 1 and 2, it is characterised in that controller (101) are additionally operable to：
When the feedback states for the controller (101) receive it is described open feedback signal when, judge the switch module
(102) it is normal；
When the feedback states for 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 more than or equal to the preset value, the switch module (102) failure is judged.
4. the detection maintenance system according to any one of claim 1-3, it is characterised in that the temperature detector includes setting
The outlet temperature detector (103) put at the outlet (204) place and be connected with the controller (101), wherein,
Outlet temperature detector (103), for detecting the temperature of the liquid at the outlet (204) place and being sent to the control
Device (101) processed.
5. detection maintenance system according to claim 4, it is characterised in that outlet temperature detector (103) are also used
In：
When the controller (101) sends the order of startup heater (201), outlet (204) place is measured
Liquid the first temperature and be sent to the controller (101), and after the preset time period is waited, measure the outlet
(204) second temperature of the liquid at place it is sent to the controller (101).
6. detection maintenance system according to claim 5, it is characterised in that controller (101) are additionally operable to：
The temperature of the liquid in the preset time period is calculated according to the first temperature for being received and the second temperature for being received
Running parameter.
7. the detection maintenance system according to 1,2,3 or 6 any one of claim, it is characterised in that the temperature change ginseng
Number includes rate of temperature change, and the preset value includes preset temperature rate of change.
8. detection maintenance system according to claim 2, it is characterised in that controller (101) are additionally operable to：
According to the temperature change parameter, and the preset value and/or the temperature needed for the generating set judge whether to need
Adjust the power of the heater (201)；
When judging to need to adjust the power of the heater (201), to the heater (201) transmit power adjust instruction.
9. detection maintenance system according to claim 5, it is characterised in that the temperature detector also includes being arranged on institute
The inlet temperature detector (104) stated import (203) place and be connected with the controller (101), it is import (203) and described
Outlet (204) is connected by external pipe, makes the liquid according to the direction by the import (203) to the outlet (204)
Circulate, wherein,
Inlet temperature detector (104), for measuring the 3rd temperature of the liquid at the import (203) place and being sent to institute
State controller (101)；
Controller (101) are additionally operable to perform one or more in following judgement：
When the second temperature is less than or equal to three temperature, judge inlet temperature detector (104) and described
The set location of outlet temperature detector (103) is contrary；
When the second temperature is more than the 3rd temperature and first temperature, judge that the detection maintenance system is normal；
When the second temperature is more than the 3rd temperature and is less than or equal to first temperature, the external pipe is judged
Failure.
10. detection maintenance system according to claim 1, it is characterised in that controller (101) are additionally operable to：
Receive the temperature of the liquid of the temperature detector detection；
Temperature according to needed for the temperature of the liquid of temperature detector detection and the generating set determines startup or closes
Heater (201).
The detection maintaining method of heater in a kind of 11. generating sets, it is characterised 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), methods described bag
Include：
Controller (101) send the order for starting heater (201) to the switch module (102)；
The temperature detector detects the temperature of the liquid and is sent to the controller (101)；
The temperature change parameter of controller (101) according to the liquid in the temperature computation preset time period for being received；
Controller (101) judge the feedback states of the switch module (102), and 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；
Controller (101) heater (201) based on the feedback states for being judged and described in the temperature change parameter decision
Whether failure.
12. detection maintaining methods according to claim 11, it is characterised in that controller (101) are based on being judged
Feedback states and heater (201) described in the temperature change parameter decision whether failure includes：
When the feedback states receive the feedback signal for the controller (101), judge that the temperature change parameter is
It is no 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 more than or equal to the preset value, judge that the heater (201) is normal；
When the feedback states do not receive the feedback signal for the controller (101), 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 more than or equal to the preset value, judge that the heater (201) is normal.
The 13. detection maintaining methods according to claim 11 or 12, it is characterised in that methods described also includes：
When the feedback states receive the feedback signal for the controller (101), just switch module (102) are being judged
Often；
When the feedback states do not receive the feedback signal for the controller (101), the temperature change parameter is judged
Whether the preset value is less than；
If the temperature change parameter is more than or equal to the preset value, the switch module (102) failure is judged.
The 14. detection maintaining methods according to any one of claim 11-13, it is characterised in that the temperature detector inspection
Surveying the temperature of the liquid and being sent to the controller (101) includes：
The temperature of the liquid at described outlet temperature detector (103) detection outlet (204) place is simultaneously sent to the controller
(101)。
15. detection maintaining methods according to claim 14, it is characterised in that described outlet temperature detector (103) are examined
Surveying the temperature of the liquid at the outlet (204) place and being sent to the controller (101) includes：
When the controller (101) sends the order of startup heater (201), the outlet temperature detector
(103) measure the first temperature of the liquid at outlet (204) place and be sent to the controller (101)；
After the preset time period is waited, the liquid at described outlet temperature detector (103) measurement outlet (204) place
Second temperature is simultaneously sent to the controller (101).
16. detection maintaining methods according to claim 15, controller (101) are pre- according to the temperature computation for being received
If the temperature change parameter of the liquid includes in the time period：
Controller (101) are according to the first temperature for being received and the second temperature for being received are calculated in preset time period
The temperature change parameter of liquid.
The 17. detection maintaining methods according to 11,12,13 or 16 any one of claim, it is characterised in that the temperature becomes
Changing parameter includes rate of temperature change, and the preset value includes preset temperature rate of change.
18. detection maintaining methods according to claim 17, it is characterised in that methods described also includes：
Controller (101) are according to needed for the temperature change parameter, and the preset value and/or the generating set
Temperature judges whether the power for needing to adjust the heater (201), and ought need to adjust the power of the heater (201)
When, to the heater (201) transmit power adjust instruction.
19. detection maintaining methods according to claim 15, it is characterised in that methods described also includes：
After the preset time period is waited, the liquid at described inlet temperature detector (104) measurement import (203) place
3rd temperature is simultaneously sent to the controller (101)；
Described controller (101) perform one or more in following judgement：
When the second temperature is less than or equal to three temperature, judge inlet temperature detector (104) and described
The set location of outlet temperature detector (103) is contrary；
When the second temperature is more than the 3rd temperature and first temperature, judge that the detection maintenance system is normal；
When the second temperature is more than the 3rd temperature and is less than or equal to first temperature, the external pipe is judged
Failure.
20. detection maintaining methods according to claim 11, it is characterised in that methods described also includes：
Described controller (101) receive the temperature of the liquid of the temperature detector detection, and are examined according to the temperature detector
Temperature needed for the temperature of the liquid of survey and the generating set determines startup or closes the heater (201).
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN106527320B CN106527320B (en) | 2018-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871616A (en) * | 2018-09-19 | 2018-11-23 | 珠海格力电器股份有限公司 | Motor state identification method and device |
| CN111351309A (en) * | 2020-03-11 | 2020-06-30 | 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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| 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 |
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| CN108871616A (en) * | 2018-09-19 | 2018-11-23 | 珠海格力电器股份有限公司 | Motor state identification method and device |
| CN108871616B (en) * | 2018-09-19 | 2021-07-30 | 珠海格力电器股份有限公司 | Motor state identification method and device |
| CN111351309A (en) * | 2020-03-11 | 2020-06-30 | 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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|---|---|
| CN106527320B (en) | 2018-11-02 |
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