CN205407406U - Two switching of power control system of CEMS - Google Patents
Two switching of power control system of CEMS Download PDFInfo
- Publication number
- CN205407406U CN205407406U CN201620267184.2U CN201620267184U CN205407406U CN 205407406 U CN205407406 U CN 205407406U CN 201620267184 U CN201620267184 U CN 201620267184U CN 205407406 U CN205407406 U CN 205407406U
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- China
- Prior art keywords
- cems
- power
- auxiliary contact
- contactor
- power supply
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Abstract
The utility model provides a two switching of power control system of CEMS, does CEMS power supply thread loop through ac contactor KM1's normal open auxiliary contact KM1 1 be connected normally closed auxiliary contact KM2 with switch K1 with security personnel's section power 2 establish ties later to normal open auxiliary contact KM1 with ac contactor KM1 1 and between the switch K1 with the L1 and N1 series connection of security personnel section power, the utility model discloses an adopt UPS power and security personnel's section power interlocking power supply, ensure the two switching of power of CEMS, solved single power supply important equipment problem because of losing the electricity and restarting when losing the electricity, simultaneously through increasing the high power load delay control return circuit, avoid in the return circuit power of important equipment less and appear robbing the electric current and leading to the problem that important equipment restarted switching in the twinkling of an eye other high -power additional equipment, thereby CEMS double - circuit switching of power effect has been reached.
Description
Technical field
The utility model belongs to thermal power generating technology field, is specifically related to double electricity of a kind of CEMS
Source handover control system.
Background technology
Fume continuous monitoring system be called for short CEMS, be in Coal,steam plant with FGD system not
The part that can or lack, is the important leverage of flue gas desulphurization system works fine.I am company CEMS
The single channel security personnel's section 220V power supply used before the Power supply alteration of cell.Often as unit mediate or
The switching of the person's section of security personnel bus power supply causes CEMS system host computer and Siemens's U23 gas analysis
Instrument moment dead electricity and restart, Siemens's U23 instrument is restarted every time all can about 30 minutes pre-
Heat the time, after host computer dead electricity improper restart may result in PAS-DAS software document damage,
Cause configuration file to be lost, thus can cause uploading environment protection digital and go out active, to environment monitoring
Bring puzzlement greatly.
And during transformation double loop power supply, a road uses ups power, a road to use security personnel's section
Power supply, in dual power supply switching tests, when often occurring power supply to switch, visual plant is attached and sets
For robbing the problem that electric current causes equipment to be restarted, the heating tape merit of especially CEMS pretreatment system
Rate (accounting for the 80% of whole load) is spent conference moment and is worn voltage down, causes Siemens's U23 instrument
Restart, thus lose the anticipated effect reached of dual power supply switching.It is thus desirable to solve double electricity simultaneously
The problem that source powers and brought after dual power supply.
Utility model content
For solving above-mentioned technical problem, the utility model provides the dual power supply of a kind of CEMS and cuts
Changing control system, the dual power supply handover control system of this CEMS is by using ups power and security personnel
Section power interlock is powered, and what when solving single power supply dead electricity, visual plant was restarted because of dead electricity asks
Topic;Simultaneously by increasing high power load delays time to control loop, solve when dual power supply switches
The problem that electric current causes visual plant to be restarted robbed by the powerful device occurred.
The utility model is achieved by the following technical programs.
The dual power supply handover control system of a kind of CEMS that the utility model provides, including security personnel
Section power supply, ups power, CEMS power main line, A.C. contactor KM1 and auxiliary contact thereof,
A.C. contactor KM2 and auxiliary contact thereof;Described CEMS main line of powering passes sequentially through exchange and connects
The normally opened auxiliary contact KM1-1 of tentaculum KM1 and switch K1 is connected with security personnel's section power supply, normally closed auxiliary
In normally opened auxiliary contact KM1-1 and switch after helping contact KM2-2 to connect with A.C. contactor KM1
Between K1, L1 and N1 with security personnel's section power supply connects;
Described CEMS main line of powering also passes sequentially through the normally opened auxiliary contact of A.C. contactor KM2
KM2-1 and switch K2 is connected with ups power, normally closed auxiliary contact KM1-2 and A.C. contactor
After KM2 series connection between normally opened auxiliary contact KM2-1 and switch K2 with L2 and N2 of ups power
Series connection.
Described CEMS powers and is additionally provided with high power load delay regulation circuit, big merit on main line
Rate load delay controls loop and includes time-delay relay TC and replicate contact, A.C. contactor
KM3 and auxiliary contact thereof, time-delay relay TC concatenates after connecting with normally closed auxiliary contact KM3-2
In CEMS power main line live wire and zero line between;
The normally opened auxiliary contact TC-1 of time-delay relay TC goes here and there after connecting with A.C. contactor KM3
Be connected to CEMS power main line live wire and zero line between, and the two ends of normally opened auxiliary contact TC-1 are also
It is parallel with normally opened auxiliary contact KM3-3;
High power load is serially connected with CEMS by two pairs of contacts of normally opened auxiliary contact KM3-1 and supplies
Between live wire and the zero line of electricity main line.
Described CEMS power main line live wire and zero line between directly concatenate low-power load.
Described high power load is heating tape heater.
Described low-power load is host computer and Siemens's U23 gas analyzer of CEMS system.
The beneficial effects of the utility model are: by using ups power and security personnel's section power supply mutual
Lock power supply, it is ensured that CEMS dual power supply switch, when solving single power supply dead electricity visual plant because of
Dead electricity and the problem restarted;Simultaneously by increasing high power load delays time to control loop, it is to avoid return
In road the power of visual plant less and occur in switching other high-power auxiliary devices of moment rob
Electric current and cause the problem that visual plant restarts;The utility model ensure that the double electricity of CEMS system
Source switching can effectively be carried out, and reduces the auxiliary device interference to capital equipment as far as possible;
Guarantee that U23 gas analyzer will not moment dead electricity be restarted, thus ensure environment protection digital continuously the most not
Interrupt monitoring, gather, reliability, stability and the accuracy of environment protection digital monitoring is provided
Big guarantee, thus reached CEMS double loop power supply switching effect.
Accompanying drawing explanation
Fig. 1 is control principle drawing of the present utility model.
Detailed description of the invention
The technical solution of the utility model is described further below, but claimed scope is not
It is confined to described.
The dual power supply handover control system of a kind of CEMS as shown in Figure 1, including security personnel's section electricity
Source, ups power, CEMS power main line, A.C. contactor KM1 and auxiliary contact, exchange
Contactor KM2 and auxiliary contact thereof;Described CEMS main line of powering passes sequentially through A.C. contactor
The normally opened auxiliary contact KM1-1 of KM1 and switch K1 is connected with security personnel's section power supply, and normally closed auxiliary is touched
Point KM2-2 connect with A.C. contactor KM1 after in normally opened auxiliary contact KM1-1 and switch K1 it
Between with security personnel section power supply L1 and N1 connect;Described CEMS main line of powering also passes sequentially through exchange
The normally opened auxiliary contact KM2-1 of contactor KM2 and switch K2 is connected with ups power, normally closed auxiliary
In normally opened auxiliary contact KM2-1 and switch after helping contact KM1-2 to connect with A.C. contactor KM2
Between K2, L2 and N2 with ups power connects.
Described CEMS powers and is additionally provided with high power load delay regulation circuit, big merit on main line
Rate load delay controls loop and includes time-delay relay TC and replicate contact, A.C. contactor
KM3 and auxiliary contact thereof, time-delay relay TC concatenates after connecting with normally closed auxiliary contact KM3-2
In CEMS power main line live wire and zero line between.
The normally opened auxiliary contact TC-1 of time-delay relay TC goes here and there after connecting with A.C. contactor KM3
Be connected to CEMS power main line live wire and zero line between, and the two ends of normally opened auxiliary contact TC-1 are also
It is parallel with normally opened auxiliary contact KM3-3;High power load is by normally opened auxiliary contact KM3-1's
The two pairs of contacts be serially connected with CEMS power main line live wire and zero line between.
Described CEMS power main line live wire and zero line between directly concatenate low-power load.
Described high power load is heating tape heater.
Described low-power load is host computer and Siemens's U23 gas analyzer of CEMS system.
The utility model utilizes the normally-closed contact KM1-2 of the A.C. contactor KM1 of security personnel's section power supply
And the coil KM2 of the A.C. contactor of ups power forms one between L2, N2 of ups power
Individual control loop controls ups power;Utilize the normally-closed contact of the ac contactor of ups power
The coil KM1 of the A.C. contactor of KM2-2 and security personnel's section power supply is at L1, N1 of security personnel's section power supply
Between formed one control loop control ensure public security section power supply.
Increase exchanges contactor KM3, increases by a pair A.C. contactor normal before heating tape heater
Open contact KM3-1 to control the Guan Bi of heating tape heater;Utilize the time delay of time-delay relay TC
The coil of Guan Bi contact TC-1 and the A.C. contactor KM3 of heating tape forms one and controls loop
Control the first Guan Bi of heating tape contactor;Utilize the A.C. contactor KM3's before heating tape
Normally opened contact KM3-3 forms a Self-closing lock loop with its coil, it is ensured that persistently closing of heating tape
Close;Utilize normally-closed contact KM3-2 and the time-delay relay of the A.C. contactor KM3 before heating tape
The coil of TC forms a control loop and controls delayed relay.
In actual use, CEMS is currently in use ups power to the utility model, UPS suddenly
Power loss, the normally-closed contact KM2-2 of the A.C. contactor KM2 of ups power will close automatically
Close, so that the coil of the A.C. contactor KM1 of security personnel's section power supply is charged, thus the section of security personnel
A.C. contactor normally opened contact KM1-1 closes, and security personnel's section is powered.Ups power dead electricity moment accompanies
The normally opened auxiliary contact KM3-1 of the A.C. contactor KM3 before the torrid zone disconnects, when security personnel's section energising
After, Siemens's U23 gas analyzer is just the most charged, and time-delay relay TC starts timing, when
Reaching time-delay relay timing closing contact TC-1 Guan Bi after the setting time, before heating tape, exchange connects
The coil of tentaculum KM3 is charged, the normally opened auxiliary contact KM3-1 Guan Bi of A.C. contactor KM3,
A.C. contactor normally-closed contact KM3-2 disconnects, the coil losing electricity of time-delay relay TC, stops work
Making, the normally opened contact KM3-3 Guan Bi of A.C. contactor KM3, before heating tape, A.C. contactor is certainly
Locked loop is energized, and heating tape heater starts normally to work;In like manner after security personnel's section dead electricity, UPS
Power supply also can be powered moment.
Use CEMS system normal operation after the technical program, do not occur accompanying when dual power supply switches
The torrid zone excessive situation wearing Siemens's U23 gas analyzer down of power, KM1-3, KM2-3 two is right
Contact is also used as monitoring stations to monitor CEMS power supply, has ensured what environment protection digital was monitored
Stability, drastically increases the stability that equipment runs.
The utility model ensure that the switching of CEMS system dual power supply can effectively be carried out, and to the greatest extent may be used
The minimizing auxiliary device interference to capital equipment of energy;Guarantee that U23 gas analyzer will not moment
Dead electricity is restarted, thus ensures that the continuous of environment protection digital does not interrupt monitoring, collection, to environment protection digital
The reliability of monitoring, stability and accuracy provide maximum guarantee, thus have reached CEMS
Double loop power supply switching effect.
Claims (5)
1. a dual power supply handover control system of CEMS, including security personnel's section power supply, UPS electricity
Source, CEMS power main line, A.C. contactor KM1 and auxiliary contact thereof, A.C. contactor KM2
And auxiliary contact, it is characterised in that: described CEMS main line of powering passes sequentially through ac contactor
The normally opened auxiliary contact KM1-1 of device KM1 and switch K1 is connected with security personnel's section power supply, normally closed auxiliary
Contact KM2-2 connect with A.C. contactor KM1 after in normally opened auxiliary contact KM1-1 and switch K1
Between with security personnel section power supply L1 and N1 connect;
Described CEMS main line of powering also passes sequentially through the normally opened auxiliary contact of A.C. contactor KM2
KM2-1 and switch K2 is connected with ups power, normally closed auxiliary contact KM1-2 and A.C. contactor
After KM2 series connection between normally opened auxiliary contact KM2-1 and switch K2 with L2 and N2 of ups power
Series connection.
2. the dual power supply handover control system of CEMS as claimed in claim 1, its feature exists
It is additionally provided with high power load delay regulation circuit, big merit on: described CEMS powers main line
Rate load delay controls loop and includes time-delay relay TC and replicate contact, A.C. contactor
KM3 and auxiliary contact thereof, time-delay relay TC concatenates after connecting with normally closed auxiliary contact KM3-2
In CEMS power main line live wire and zero line between;
The normally opened auxiliary contact TC-1 of time-delay relay TC goes here and there after connecting with A.C. contactor KM3
Be connected to CEMS power main line live wire and zero line between, and the two ends of normally opened auxiliary contact TC-1 are also
It is parallel with normally opened auxiliary contact KM3-3;
High power load is serially connected with CEMS by two pairs of contacts of normally opened auxiliary contact KM3-1 and supplies
Between live wire and the zero line of electricity main line.
3. the dual power supply handover control system of CEMS as claimed in claim 1 or 2, its feature
Be: described CEMS power main line live wire and zero line between directly concatenate low-power load.
4. the dual power supply handover control system of CEMS as claimed in claim 2, its feature exists
In: described high power load is heating tape heater.
5. the dual power supply handover control system of CEMS as claimed in claim 3, its feature exists
In: described low-power load is host computer and Siemens's U23 gas analyzer of CEMS system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620267184.2U CN205407406U (en) | 2016-03-31 | 2016-03-31 | Two switching of power control system of CEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620267184.2U CN205407406U (en) | 2016-03-31 | 2016-03-31 | Two switching of power control system of CEMS |
Publications (1)
Publication Number | Publication Date |
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CN205407406U true CN205407406U (en) | 2016-07-27 |
Family
ID=56419321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201620267184.2U Withdrawn - After Issue CN205407406U (en) | 2016-03-31 | 2016-03-31 | Two switching of power control system of CEMS |
Country Status (1)
Country | Link |
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CN (1) | CN205407406U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105680557A (en) * | 2016-03-31 | 2016-06-15 | 大唐贵州发耳发电有限公司 | CEMS dual-power-supply switching control loop |
CN106340953A (en) * | 2016-09-30 | 2017-01-18 | 上海华虹宏力半导体制造有限公司 | Dual-supply automatic transfer switch |
CN107845519A (en) * | 2017-12-04 | 2018-03-27 | 常熟开关制造有限公司(原常熟开关厂) | Double power supply automatic transfer switch and its control method |
CN114138094A (en) * | 2021-12-28 | 2022-03-04 | 杭州万高科技股份有限公司 | High-reliability on-chip power supply switching circuit |
-
2016
- 2016-03-31 CN CN201620267184.2U patent/CN205407406U/en not_active Withdrawn - After Issue
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105680557A (en) * | 2016-03-31 | 2016-06-15 | 大唐贵州发耳发电有限公司 | CEMS dual-power-supply switching control loop |
CN105680557B (en) * | 2016-03-31 | 2019-02-15 | 大唐贵州发耳发电有限公司 | A kind of dual power supply switching control circuit of CEMS |
CN106340953A (en) * | 2016-09-30 | 2017-01-18 | 上海华虹宏力半导体制造有限公司 | Dual-supply automatic transfer switch |
CN107845519A (en) * | 2017-12-04 | 2018-03-27 | 常熟开关制造有限公司(原常熟开关厂) | Double power supply automatic transfer switch and its control method |
CN114138094A (en) * | 2021-12-28 | 2022-03-04 | 杭州万高科技股份有限公司 | High-reliability on-chip power supply switching circuit |
CN114138094B (en) * | 2021-12-28 | 2023-09-29 | 杭州万高科技股份有限公司 | High-reliability on-chip power supply switching circuit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
AV01 | Patent right actively abandoned | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20160727 Effective date of abandoning: 20190215 |