CN208203637U - Blower high-pressure frequency-conversion control loop monitoring device - Google Patents
Blower high-pressure frequency-conversion control loop monitoring device Download PDFInfo
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- CN208203637U CN208203637U CN201820512230.XU CN201820512230U CN208203637U CN 208203637 U CN208203637 U CN 208203637U CN 201820512230 U CN201820512230 U CN 201820512230U CN 208203637 U CN208203637 U CN 208203637U
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- control loop
- pressure frequency
- conversion control
- blower
- monitoring device
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 31
- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 230000004044 response Effects 0.000 claims abstract description 3
- 238000012544 monitoring process Methods 0.000 claims description 15
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model discloses a kind of blower high-pressure frequency-conversion control loop monitoring devices, it is related to steam power plant's supply air system, aim to solve the problem that existing blower high-pressure frequency-conversion control loop when something goes wrong, staff can not have found in time, the problem of safeguarding, influencing blower working efficiency, its key points of the technical solution are that: a kind of blower high-pressure frequency-conversion control loop monitoring device, it include: prompt component, for issuing standby signal；Detection components are electrically connected to blower high-pressure frequency-conversion control loop, for detecting simultaneously output loop detection data；Control assembly is electrically connected to detection components and prompt component, receives the circuit detection data of response detection components output, controls prompt component opening and closing according to circuit detection data.The blower high-pressure frequency-conversion control loop monitoring device of the utility model can monitor and staff's control loop is prompted to guarantee blower efficient operation with the presence or absence of problem so as to the timely maintenance circuitry of staff.
Description
Technical field
The utility model relates to steam power plant's supply air systems, more specifically, it relates to which a kind of blower high-pressure frequency-conversion controls back
Road monitoring device.
Background technique
Blower is the important ancillary equipment of firepower (heat) power plant, the four of boiler big blower (pressure fan, air-introduced machine, First air
Machine or mill exhauster and gas recirculating fan) total power consumption account for about 2% or so of unit generation amount.With fired power generating unit capacity
Raising, the capacity of Air Fans of Utility Boilers is also increasing, therefore provides the operational efficiency of blower to reducing station service power consumption rate tool
There is important role.
The wherein wind that pressure fan, primary air fan provide, is mainly used for drying fuel, and fuel (coal dust) is sent into boiler and is fired
It burns.Since the load of unit often changes, in order to guarantee the burning of boiler and the stabilization of negative pressure, need to adjust in time air output and
Fuel quantity.
In 200MW and following unit, generally adjusted by the way of the angle (throttle opening) of adjustment inlet guide vane
Component is saved, this shutting off for air door adjusting is lost generally 30% or so.In 300MW and the above unit, then dynamic and static blade is used
Mode come realize air quantity adjust, this regulative mode shut off loss 20% or so.Both the above mode is for primary air fan
Regulation cause to be lost larger because part air quantity is trapped.
In view of the above-mentioned problems, notification number is a kind of axial-flow type movable vane adjusting wind disclosed in the Chinese patent of CN204476822U
The speed-regulating system of machine, is characterized in that: including power supply；Frequency changer controller；Frequency converter, respectively with power supply and frequency converter control
Device connection processed is to carry out frequency conversion to the electric current of received fixed frequency after receiving frequency conversion instruction；And motor, input terminal and change
The output end of frequency device connects, and output shaft adjusts blower with axial-flow type movable vane and connect to drive axial-flow type movable vane to adjust blower rotation.
Above scheme is in such a way that frequency converter is to fan speed regulation, reducing energy consumption, but frequency converter and blower etc.
After long-term use, each component will appear irregular change, be led to wind due to the factors such as physical damage, the voltage of governor circuit
Machine works in too low or excessively high voltage, and usually staff can not have found to repair in time, lead to the reality of blower
Border effective power is affected, it is therefore desirable to propose the new scheme of one kind to solve this problem.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of blower high-pressure frequency-conversions to control back
Road monitoring device, can be used for finding and prompting staff's blower high-pressure frequency-conversion control loop, there are problems, to facilitate work
Personnel have found in time, and safeguard to blower governor circuit, guarantee that blower can be with efficient operation.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of blower high-pressure frequency-conversion
Control loop monitoring device, comprising:
Component is prompted, for issuing standby signal；
Detection components are electrically connected to blower high-pressure frequency-conversion control loop, for detecting simultaneously output loop detection data；
Control assembly is electrically connected to detection components and prompt component, receives the circuit testing number of response detection components output
According to according to the control prompt component opening and closing of circuit detection data.
By using above-mentioned technical proposal, can use detection components detection blower fan high-pressure frequency-conversion control loop voltage,
Electric current, and output loop detection data is opened to control assembly so that control assembly controls prompt component according to circuit detection data
It closes, prompts staff, found in time convenient for work, and blower governor circuit is safeguarded, guarantee that blower can be transported efficiently
Row.
The utility model is further arranged to: the prompt component includes alarm lamp, and the control assembly includes controller
And relay, the alarm lamp are series at relay, the relay is electrically connected to controller.
By using above-mentioned technical proposal, controller output control signal control relay can be realized to alarm lamp control
System, so that opening alarm lamp in appropriate issues standby signal prompt staff.
The utility model is further arranged to: the detection components include voltage monitoring instrument, and the voltage monitoring instrument is in parallel
High-voltage frequency converter in blower high-pressure frequency-conversion control loop, and fan-out evidence is connected to control assembly.
By using above-mentioned technical proposal, by voltage monitoring instrument can voltage to blower high-pressure frequency-conversion control loop into
Row detection, and export, so that control assembly is monitored the voltage in blower high-pressure frequency-conversion control loop.
The utility model is further arranged to: the controller is PLC controller or single-chip microcontroller, and the controller data connects
Be connected to detection components data output end, when the circuit detection data of detection components output does not meet preset value, controller control after
Electric appliance conducting, and open alarm lamp.
By using above-mentioned technical proposal, controller is PLC controller or single-chip microcontroller, with certain Data Analysis Services
Ability can control alarm lamp opening and closing by itself and preset value comparison, and according to comparing result after receiving circuit detection data.
The utility model is further arranged to: the prompt modules in parallel has wireless data transmitter, the wireless data
Emitter data is connected to the data output end of control assembly, and the wireless data transmitter wireless data connection has for the people that works
The portable wireless data receiver of member.
By using above-mentioned technical proposal, in blower circuit when exception, control assembly can pass through wireless data transmitter
Abnormal data is sent on the portable wireless data receiver of staff, so that staff at an arbitrary position can
Discovery blower circuit is abnormal in time.
The utility model is further arranged to: the wireless data transmitter is 3G/4G IoT M2M Modem DTU
D223, the wireless data receiver are mobile phone.
By using above-mentioned technical proposal, can use 3G/4G IoT M2M Modem DTU D223 by 3G/4G to
The prompt informations such as the portable sending short message by mobile phone of staff；Because wireless data receiver is mobile phone, work people
Member may not necessarily carry other radio receivers, facilitate its use；Save the cost to a certain extent simultaneously.
The utility model is further arranged to: the wireless data transmitter is electrically connected with for controlling its delayed startup
Delay startup circuit.
By using above-mentioned technical proposal, it can use delay startup circuit and carry out delayed start-up wireless data transmitter, keep away
Exempt from staff receive prompt component standby signal go maintenance circuitry after, wireless data transmitter also sends relatively unnecessary
Data to staff, avoid unnecessary interference.
The utility model is further arranged to: the delay startup circuit is pulse actuated type delay circuit, the delay
Start-up circuit includes 555 timers, and 555 timer signal is connected to control assembly signal output end.
By using above-mentioned technical proposal, it can directly pass through controller automatic control delay circuit, and according to practical need
It asks and sets delay time by 555 timers, staff is facilitated to use.
In conclusion the utility model has the following beneficial effects:
1, setting voltage monitoring instrument detects blower high-pressure frequency-conversion control loop, and output loop detection data gives control group
Part, control assembly are electrically connected alarm lamp, and according to the circuit detection data control alarm lamp opening and closing received, to return in blower
When the exception of road, staff is prompted using alarm lamp, so that staff has found in time, and blower governor circuit is tieed up
Shield guarantees that blower can be with efficient operation；
2, control assembly data connection wireless data transmitter, wireless data transmitter wireless data connection have wireless data
Receiver, and wireless data receiver is carried by staff, even if thus when staff is not near alarm lamp,
It can be by wireless data receiver until blower circuit exception, to guarantee using effect.
Detailed description of the invention
Fig. 1 is the block diagram one of the utility model, to show overall structure；
Fig. 2 is the structural schematic diagram one of the utility model, mainly to show the connection structure of voltage monitoring instrument；
Fig. 3 is the structural schematic diagram two of the utility model, mainly to show the control structure of controller；
Fig. 4 is the block diagram two of the utility model, mainly to show wireless data transmitter and wireless data receiver
Structure；
Fig. 5 is the delay startup circuit display diagram of the utility model.
In figure: 1, alarm lamp；2, voltage monitoring instrument；3, controller；31, relay；4, wireless data transmitter；5, wireless
Data sink.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Blower high-pressure frequency-conversion control loop monitoring device, referring to FIG. 1, FIG. 2 and FIG. 3, comprising:
Component, including alarm lamp 1 are prompted, alarm lamp 1 selects audible-visual alarm lamp, is mounted on the Central Control Room of power plant or on duty
Interior, for issuing standby signal.
Detection components, including voltage monitoring instrument 2, voltage monitoring instrument 2 select the PM700LCD electric power prison of generation east electrical equipment
Control instrument；Voltage monitoring instrument 2 is parallel to the high-voltage frequency converter in blower high-pressure frequency-conversion control loop, high for detecting acquisition blower
The voltage and current of buckling frequency control loop, and output loop detection data.Why PM700LCD electric power monitoring instrument is selected,
It is to have the function of off-limit alarm etc. because it is with certain data sampling and processing, statistics and control function, can preferably fit
Work requirements are answered, it, can be with so when near staff's inspection to its installation site simultaneously as carry certain alert capability
Timely and conveniently find the problem.
Control assembly, including controller 3 and relay 31, wherein controller 3 is times in PLC controller or single-chip microcontroller
It anticipates one kind.3 data connection of controller is exported in the data output end of voltage monitoring instrument 2 for receiving and responding voltage monitoring instrument 2
Circuit detection data.Controller 3 is electrically connected with relay 31, and the normally opened contact of relay 31 is series at the circuit of alarm lamp 1
In, it is opened and closed with controlling alarm lamp 1 with hop controller 3.
In use, staff first sets preset value in controller 3, preset value is normal according to the circuit of measured voltage
Minimum and maximum voltage, electric current when work determine.When the circuit detection data of voltage monitoring instrument 2 output to controller 3 is not inconsistent
Preset value is closed, controller 3 outputs control signals to relay 31, and relay 31 switches to closure conducting alarm lamp by normally opened at this time
1 circuit opens sending standby signal to control it, prompts staff, staff's on-call maintenance air-blower control is facilitated to return
Road guarantees blower efficient operation.
Referring to Fig. 4, Fig. 3 is shown in since staff not necessarily stays in alarm lamp 1() near, if air-blower control at this time
Circuit goes wrong, and staff can not receive the standby signal of the sending of alarm lamp 1, it is possible to go wrong；Simultaneously
Also for prevent 1 failure of alarm lamp influence using effect, therefore be arranged wireless data transmitter 4.
4 data connection of wireless data transmitter is in parallel-connection structure, the two in the data output end and alarm lamp 1 of controller 3
It does not interfere with each other；4 wireless data connection of wireless data transmitter has wireless data receiver 5, and wireless data receiver 5 is by the people that works
Member carries.In air-blower control loop fault, controller 3 exports preset data to wireless data transmitter 4, wireless data
Preset data is sent on the wireless data receiver 5 with staff by transmitter 4 again, to guarantee staff any
Place all monitors air-blower control circuit.
Wireless data transmitter 4 is 3G/4G IoT M2M Modem DTU D223, why selects it, is because of 3G/
4G IoT M2M Modem DTU D223 can be connected by 3G/4G communication modes with data in mobile phone, can be sent to mobile phone short
Letter, corresponding wireless data receiver 5 are mobile phone, and at this time in addition staff need not carry other radio receivers.
Referring to Fig. 4, because if alarm lamp 1(is shown in Fig. 3) open just at once the synchronous prompt information that sends to work people
Member is relatively unnecessary, and staff may obtain the standby signal of the sending of alarm lamp 1 after all, so in wireless transmitter 4
On be electrically connected with delay startup circuit.
Delay startup circuit is as shown in figure 5, be pulse actuated type delay circuit, including 555 timers, 555 timers letter
It number is connected to the signal output end of controller 3, for receiving trigger signal.
When air-blower control circuit exception, controller 3 exports trigger signal control delay circuit and opens timing, when its timing
Finishing control wireless data transmitter 4 is opened.
Timing time according to the actual situation, is determined in advance by staff.
Delay startup circuit is described in detail below comprising:
555 timers, 4 feet and 8 feet are coupled to VDD connection power supply, 1 foot ground connection；
Resistance RT, one end are coupled to VDD, and the tie point of 4 feet of 555 timers and 8 feet, the other end are coupled in other words
7 feet and 6 feet of 555 timers；2 foot signals of 555 timers are connected to controller 3；
Capacitor CT, one end are coupled to the tie point of 6 foot of resistance RT and 555 timer, other end ground connection；
Capacitor C, one end are coupled to 5 feet of 555 timers, other end ground connection；
Relay K, coil one end is coupled to 3 feet of 555 timers, other end ground connection, and normally opened contact is series at nothing
On the major loop of line data source 4.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of blower high-pressure frequency-conversion control loop monitoring device, it is characterised in that: including,
Component is prompted, for issuing standby signal；
Detection components are electrically connected to blower high-pressure frequency-conversion control loop, for detecting simultaneously output loop detection data；
Control assembly is electrically connected to detection components and prompt component, receives the circuit detection data of response detection components output, root
Prompt component opening and closing is controlled according to circuit detection data.
2. blower high-pressure frequency-conversion control loop monitoring device according to claim 1, it is characterised in that: the prompt component
Including alarm lamp (1), the control assembly includes controller (3) and relay (31), and the alarm lamp (1) is series at relay
(31), the relay (31) is electrically connected to controller (3).
3. blower high-pressure frequency-conversion control loop monitoring device according to claim 1, it is characterised in that: the detection components
Including voltage monitoring instrument (2), the voltage monitoring instrument (2) is parallel to the high-voltage frequency converter in blower high-pressure frequency-conversion control loop,
And fan-out evidence is connected to control assembly.
4. blower high-pressure frequency-conversion control loop monitoring device according to claim 2, it is characterised in that: the controller
It (3) is PLC controller or single-chip microcontroller, controller (3) data connection is in detection components data output end, when detection components are defeated
Circuit detection data out does not meet preset value, and controller (3) controls relay (31) conducting, and opens alarm lamp (1).
5. blower high-pressure frequency-conversion control loop monitoring device according to claim 1, it is characterised in that: the prompt component
Be parallel with wireless data transmitter (4), wireless data transmitter (4) data connection in the data output end of control assembly,
Wireless data transmitter (4) wireless data connection has for the portable wireless data receiver of staff (5).
6. blower high-pressure frequency-conversion control loop monitoring device according to claim 5, it is characterised in that: the wireless data
Transmitter (4) is 3G/4G IoT M2M Modem DTU D223, and the wireless data receiver (5) is mobile phone.
7. blower high-pressure frequency-conversion control loop monitoring device according to claim 5, it is characterised in that: the wireless data
Transmitter (4) is electrically connected with the delay startup circuit for controlling its delayed startup.
8. blower high-pressure frequency-conversion control loop monitoring device according to claim 7, it is characterised in that: the delayed startup
Circuit is pulse actuated type delay circuit, and the delay startup circuit includes 555 timers, the 555 timer signal connection
In control assembly signal output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512230.XU CN208203637U (en) | 2018-04-11 | 2018-04-11 | Blower high-pressure frequency-conversion control loop monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820512230.XU CN208203637U (en) | 2018-04-11 | 2018-04-11 | Blower high-pressure frequency-conversion control loop monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203637U true CN208203637U (en) | 2018-12-07 |
Family
ID=64523685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820512230.XU Expired - Fee Related CN208203637U (en) | 2018-04-11 | 2018-04-11 | Blower high-pressure frequency-conversion control loop monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208203637U (en) |
-
2018
- 2018-04-11 CN CN201820512230.XU patent/CN208203637U/en not_active Expired - Fee Related
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Granted publication date: 20181207 |