CN106877319A - A kind of fan oil station power connection structure - Google Patents
A kind of fan oil station power connection structure Download PDFInfo
- Publication number
- CN106877319A CN106877319A CN201710218029.0A CN201710218029A CN106877319A CN 106877319 A CN106877319 A CN 106877319A CN 201710218029 A CN201710218029 A CN 201710218029A CN 106877319 A CN106877319 A CN 106877319A
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- China
- Prior art keywords
- control
- sections
- loop
- pump
- oil station
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The invention discloses a kind of fan oil station power connection structure, wherein the A grease pumps control loop, A Pump Controls loop per Fans access this machine boiler ensuring public security MCC sections；B grease pumps control loop, B Pump Controls loop access this machine boiler PC（Power center (PC)）Section；Control circuit for heater power supply is divided into independent four groups, constituting four independent control cabinets with four oil pump control ring currents respectively is installed in MCC sections or PC sections of switch board；Heater control loop and thermal control measuring point transit cable and terminal are set in fan oil station local control box.Trouble point of the present invention is few, stable equipment operation, can prevent fan oil station full cut-off, blower fan fault of stop that bus short-time loss of power supply is caused, monitoring convenient to carry out.
Description
Technical field
The present invention relates to a kind of power connection structure, more particularly to a kind of fan oil station power connection structure.
Background technology
The mode of connection that existing power plant uses is：A grease pumps, B grease pumps, A hydraulic oil pumps, B are included per Fans
4 oil pump control loops of hydraulic oil pump, additional heater control loop, platform machine boiler where the power supply on this five tunnel is taken from is ensured public security
MCC（Motor control center）Section；Fan oil station same type oil pump has two, and one works, and one standby, by oil pressure node control
System.Once an oil pump fault tripping operation, after oil pressure declines, another oil pump should automatic.If two oil pumps all failures,
Oil pressure continues to decline, and its next oil pressure node can act blower fan main switch, allow blower fan to trip, and serious meeting causes boiler main fuel trip
（Main fuel trip）.
The existing mode of connection causes a power supply of MCC sections of all oil pumps of every Fans and heater common boiler security personnel
Switch, such as patent 201620993443.X（A kind of fan oil station electric power loop control device）Employed in power supply connection knot
Structure.Being ensured public security MCC section when boiler carries out power supply switching or when other exceptions cause boiler MCC sections of busbar voltage of security personnel to reduce in short-term
Wait, whole stoppages in transit are only needed boiler and ensured public security after MCC section busbar voltage recover normally, by operations staff DCS by all petrol stations of blower fan
Manually opened all oil pumps open all oil pumps on the spot, and the process may trigger boiler main fuel trip to cause non-stopping.
And, in recovery process, blower fan oil pump control is instructed by button on the spot and distant place DCS and operated, and is controlled on the spot
Control is realized in loop processed by A.C. contactor division, causes complicated with regard to earth-return, and trouble point is more on the spot.
The content of the invention
It is an object of the invention to solve problem present in current techniques, there is provided a kind of fan oil station power supply connection knot
Structure, trouble point is few, stable equipment operation, can prevent fan oil station full cut-off, blower fan fault of stop that bus short-time loss of power supply is caused, just
In implementing monitoring.
To reach above-mentioned purpose, the technology used in the present invention means are：A kind of fan oil station power connection structure, wherein
A grease pumps control loop, A Pump Controls loop per Fans access this machine boiler and ensure public security MCC sections；B lubricating oil
Pump control loop, B Pump Controls loop access this machine boiler PC（Power center (PC)）Section；By control circuit for heater power supply
It is divided into independent four groups, constituting four independent control cabinets with four oil pump control ring currents respectively is installed to MCC sections or PC
In the switch board of section；Heater control loop and thermal control measuring point transit cable and terminal are set in fan oil station local control box.
Further, this machine boiler PC 1B are accessed in the B grease pumps control loop, B Pump Controls loop
Section.
Further, the A grease pumps control loop, A Pump Controls loop, B grease pumps control loop, B
Pump Control is respectively provided with motor protector in loop, and the motor protector transmits running current value to DCS in real time, for reality
When monitor.
Further, the motor protector is UNT-MMI-B type motor protectors.
Advantageous Effects of the invention：1st, due to A oil pumps and B oil pump power supply step-by-step arrangements, A oil pump power supplys take from boiler
MCC sections of security personnel, B oil pump power supplys take from 1B sections of boiler PC, it is ensured that do not influence another when bus switches where an oil pump power supply
Oil pump normally operation or startup；Every independent power supply all the way of oil pump, heater power source is separated with oil pump power supply, it is ensured that any one
All oil pump dead electricity will not be made when oil pump or heater failure.2nd, fan oil station local control box electric loop, control cabinet are cancelled
In only retain heater circuit and thermal control measuring point transit cable and terminal, greatly reduce the trouble point with regard to earth-return.3rd, utilize
Motor protector, increases the protection settings such as excessively stream, overload, phase sequence, to ensure oil pump safe and reliable operation, while being transmitted to DCS
Running current value, realizes real-time monitoring.4th, simple structure, control is reliable, low cost.
Brief description of the drawings
The elaboration of a step is done to the present invention with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the invention.
In figure：1st, A grease pumps control loop, 2, A Pump Controls loop, 3, B grease pump control loops, 4, B
Pump Control loop, 5, control circuit for heater.
Specific embodiment
As shown in figure 1, a kind of fan oil station power connection structure, wherein the A grease pumps control loop 1, A per Fans
Access this machine boiler and ensure public security MCC sections in Pump Control loop 2；B grease pumps control loop 3, B Pump Controls loop
4 access PC sections of this machine boiler；Control circuit for heater 5 is divided into independent four groups, respectively with four oil pump control loop sets
It is installed in MCC sections or PC sections of switch board into four independent control cabinets；Heater is set in fan oil station local control box
Control loop and thermal control measuring point transit cable and terminal, cancel fan oil station local control box other electric loops.
1B sections of this machine boiler PC is accessed in the B grease pumps control loop 3, B Pump Controls loop 4.
Due to all oil pumps of a Fans and a power switch of MCC sections of heater common boiler security personnel, when boiler is protected
MCC section of peace carries out power supply switching or other exceptions cause boiler to ensure public security MCC sections of busbar voltage when reduce in short-term, and blower fan is all
Whole stoppages in transit are only needed boiler and ensured public security after MCC section busbar voltage recover normally, by the manually opened institutes of operations staff DCS by petrol station
There is oil pump or open all oil pumps on the spot, the process may trigger boiler main fuel trip to cause non-stopping.A oil pump power supplys are taken from into boiler to protect
MCC sections of peace, B oil pump power supplys take from 1B sections of boiler PC, it is ensured that do not influence another oil when bus switches where an oil pump power supply
Pump normally operation or startup, prevents from causing fan oil station full cut-off, blower fan to stop transport during bus short-time loss of power supply.
The A grease pumps control loop 1, A Pump Controls loop 2, B grease pumps control loop 3, B hydraulic oil
Motor protector is respectively provided with pump control loop 4, the motor protector transmits running current value to DCS in real time, for prison in real time
Survey.
The motor protector is UNT-MMI-B type motor protectors.
Operated because existing blower fan oil pump control is instructed by button on the spot and distant place DCS, on the spot control loop
Control is realized by A.C. contactor division, causes complicated with regard to earth-return, trouble point is more on the spot.In order to reduce the fault point, protect
Card stable equipment operation, by local control box setting heater control loop and thermal control measuring point transit cable and terminal.And
Protection device is added in Oil pump electrical machinery loop, increases the necessary protection settings such as excessively stream, overload, phase sequence, increased the magnitude of current and show
Show, be easy to protect motor and real-time monitoring.
Found in long-term practice is groped, the A roads and B roads in the control loop of every Fans are separated, and B roads are set
In this machine boiler PC, 1B sections does not influence its boiler implosion, and can realize switching；Control circuit for heater is divided into independent four
Group, constitutes four independent control cabinets and is installed in MCC sections or PC sections of switch board with four oil pump control loops respectively, every
The independent power supply all the way of oil pump, A oil pumps and B oil pump power supply step-by-step arrangements, heater power source are separated with oil pump power supply, and oil pump power supply is extremely
It is rare to be retained in security personnel's section all the way, it is ensured that do not influenceed when bus switches where oil pump power supply another oil pump normally operation or
Start.The other independent power supply all the way of every Oil pump electrical machinery, heater power source is separated with oil pump power supply, it is ensured that an oil pump or heating
Device failure will not make all oil pump dead electricity.This design can save the control loop on the spot in fan oil station local control box simultaneously
Slightly, a reservation heater control loop and thermal control measuring point transit cable and terminal, substantially reduce the number trouble point.And cancellation is controlled on the spot
In loop processed while the control loop of part, increase motor protector, realize remote real-time monitoring.
The present invention is applied in production, greatly reduces the problem produced in equipment operation, and stable equipment operation makes enterprise
Industry is original because the economic loss that equipment fault is produced is greatly reduced, and substantial amounts of economic benefit is brought to enterprise.
Advantageous Effects of the invention：
1st, due to A oil pumps and B oil pump power supply step-by-step arrangements, A oil pump power supplys are taken from boiler and are ensured public security MCC sections, and B oil pump power supplys take from pot
1B sections of stove PC, it is ensured that do not influence another oil pump normally operation or startup when bus switches where an oil pump power supply；Every oil
The independent power supply all the way of pump, heater power source is separated with oil pump power supply, it is ensured that will not be made when any one oil pump or heater failure
All oil pump dead electricity.
2nd, cancel fan oil station local control box electric loop, heater circuit is only retained in control cabinet and thermal control measuring point turns
Cable and terminal are connect, the trouble point with regard to earth-return is greatly reduced.
3rd, using motor protector, the protection settings such as excessively stream, overload, phase sequence are increased, to ensure oil pump safe and reliable operation,
Running current value is transmitted to DCS simultaneously, real-time monitoring is realized.
4th, simple structure, control is reliable, low cost.
Claims (4)
1. a kind of fan oil station power connection structure, wherein the A grease pump control loops per Fans（1）, A hydraulic oil pump controls
Loop processed（2）This machine boiler is accessed to ensure public security MCC sections；B grease pump control loops（3）, B Pump Controls loop（4）Connect
Enter PC sections of this machine boiler；By control circuit for heater（5）It is divided into independent four groups, is constituted with four oil pump control loops respectively
Four independent control cabinets are installed in MCC sections or PC sections of switch board；Heater control is set in fan oil station local control box
Loop processed and thermal control measuring point transit cable and terminal.
2. fan oil station power connection structure according to claim 1, it is characterised in that：The B grease pumps are controlled back
Road（3）, B Pump Controls loop（4）Access 1B sections of this machine boiler PC.
3. fan oil station power connection structure according to claim 1, it is characterised in that：The A grease pumps are controlled back
Road（1）, A Pump Controls loop（2）, B grease pump control loops（3）, B Pump Controls loop（4）In be respectively provided with
Motor protector, the motor protector transmits running current value to DCS in real time.
4. fan oil station power connection structure according to claim 3, it is characterised in that：The motor protector is UNT-
MMI-B type motor protectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218029.0A CN106877319A (en) | 2017-04-05 | 2017-04-05 | A kind of fan oil station power connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218029.0A CN106877319A (en) | 2017-04-05 | 2017-04-05 | A kind of fan oil station power connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106877319A true CN106877319A (en) | 2017-06-20 |
Family
ID=59160846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710218029.0A Pending CN106877319A (en) | 2017-04-05 | 2017-04-05 | A kind of fan oil station power connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106877319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575729A (en) * | 2017-10-20 | 2018-01-12 | 中冶赛迪工程技术股份有限公司 | A kind of integrated oil pump station of thin-oil sealed gas tank |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
| CN205960787U (en) * | 2016-08-30 | 2017-02-15 | 华润电力（宜昌）有限公司 | Fan oil station power loop control device |
-
2017
- 2017-04-05 CN CN201710218029.0A patent/CN106877319A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
| CN205960787U (en) * | 2016-08-30 | 2017-02-15 | 华润电力（宜昌）有限公司 | Fan oil station power loop control device |
Non-Patent Citations (2)
| Title |
|---|
| 杨可: "380V厂用电系统优化", 《华电技术》 * |
| 王青春 等: "火电厂低压厂用电电源优化改造", 《内蒙古电力技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575729A (en) * | 2017-10-20 | 2018-01-12 | 中冶赛迪工程技术股份有限公司 | A kind of integrated oil pump station of thin-oil sealed gas tank |
| CN107575729B (en) * | 2017-10-20 | 2024-03-12 | 中冶赛迪工程技术股份有限公司 | Thin oil seal type integrated oil pump station for gas tank |
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Application publication date: 20170620 |