CN103696953A - Air compressor control device - Google Patents
Air compressor control device Download PDFInfo
- Publication number
- CN103696953A CN103696953A CN201310750405.2A CN201310750405A CN103696953A CN 103696953 A CN103696953 A CN 103696953A CN 201310750405 A CN201310750405 A CN 201310750405A CN 103696953 A CN103696953 A CN 103696953A
- Authority
- CN
- China
- Prior art keywords
- air compressor
- loop
- dcs
- instruction
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to the technical field of start-stop control of power plant generator set utility system air compressors, in particular to an air compressor control device. An air compressor is serially connected with normally open contacts in a loop, is connected with a self-perpetuating loop in parallel and then forms a loop with a live wire and a null wire of a 220V alternating-current power supply, the self-perpetuating loop is composed of a DCS (distributed control system) start instruction, R1 normally open contacts a, a closing relay R1 and a DCS stop instruction, the DCS start instruction is parallelly connected with the R1 normally open contacts a and then serially connected the closing relay R1, and the closing relay R1 is serially connected with the DCS stop instruction and forms a loop circuit with the live wire and the null wire of the 220V alternating-current power supply. By the design of the self-perpetuating loop, a control cabinet in the air compressor start-stop control loop can provide stable communication signals to the air compressor for a long time, and a DSC system gives out a pulse instruction to control start-stop states of the air compressor.
Description
Technical field
The present invention relates to power generator group synergic system air compressor on off control technical field, especially a kind of air compressor control device.
Background technique
The generator set synergic system air compressor that thermal power plant adopts, is generally air compressor, and what this air compressor was controlled employing on the spot is that the integrated PLC of Siemens controls, and this PLC is curable, receives and opens, is necessary for during stop instruction long instruction; And this air compressor is to send out enabled instruction by a DCS distant place, and air compressor is brought into operation, therefore, once enabled instruction disappears, air compressor just can quit work immediately; Meanwhile, because the position of this air compressor is away between DCS system electronics, need to air compressor, carry out on off control by remote I/O station; But usually can there is communicating interrupt in the communication module between remote I/O station and DCS system; and the power-supply system that remote I/O station adopts is MCC power supply on the spot; usually can cause because of the unreliable of power supply the power supply of remote I/O station lose or break down; the enabled instruction that air compressor is accepted is disappeared; air compressor just can be stopped transport immediately; air compressor will cause a large amount of pneumatic equipments of generator set to produce misoperation after stopping transport; cause unit tripping; and can make device damage; the working life of shortening equipment, the cost of increase electrical production.
Summary of the invention
In order to solve the above-mentioned technical problem existing in prior art, the invention provides the supply that a kind of line construction is simple, guarantee DCS system command, improve the reliability that air compressor and communication are supplied with, avoid device damage, extension device working life, the air compressor control device reducing production costs.
Specifically be achieved by the following technical programs:
A kind of air compressor control device, a pair of normally opened contact b connects in loop, air compressor place, and be connected in parallel with self-holding circuit, form loop circuit with the two ends of 220V ac power supply again, by the design of self-holding circuit, make that in air compressor on off control loop, control cabinet can be permanent for air compressor provides stable control signal, realized DCS system and sent the start and stop state that pulse command is controlled air compressor.Simultaneously, for what make that control cabinet in air compressor on off control loop can be permanent, provide enabled instruction for air compressor, avoided the air compressors that fault causes such as communication in remote I/O cabinet, power supply, module to stop transport, the non-generation stopping with device damage accident of having stopped generator set, extended the working life of equipment, described self-holding circuit is comprised of DCS enabled instruction, R1 normally opened contact a and closing relay R1 and DCS stoppage in transit instruction, and wherein DCS enabled instruction is connected in series with closing relay R1 after in parallel with R1 normally opened contact a again; Closing relay R1 connects with DCS stoppage in transit instruction and forms loop circuit with live wire, the zero line of 220V ac power supply.
Technique effect of the present invention is embodied in: by utilizing the design of a pair of self-holding circuit of relay, what make that control cabinet in air compressor on off control loop can be permanent provides enabled instruction for air compressor, realize DCS system and send the start and stop state that pulse command is controlled air compressor, avoided the air compressors that fault causes such as communication in remote I/O cabinet, power supply, module to stop transport, the non-generation stopping with device damage accident of having stopped generator set, extend the working life of equipment, reduced the cost of electrical production.
Accompanying drawing explanation
Fig. 1 is the structural representation of air compressor control device of the present invention.
Fig. 2 is the original design structural representation of air compressor control device of the present invention.
Embodiment
Below in conjunction with concrete mode of execution and accompanying drawing, technological scheme of the present invention is further elaborated, but claimed scope is not only confined to done description.
Embodiment one
As shown in Figure 1, a kind of air compressor control device, a pair of normally opened contact b connects in loop, air compressor place, and be connected in parallel with self-holding circuit, form loop circuit with the two ends of 220V ac power supply again, by the design of self-holding circuit, make that in air compressor on off control loop, control cabinet can be permanent for air compressor provides stable communication signal, realized DCS system and sent the start and stop state that pulse command is controlled air compressor; For what make that control cabinet in air compressor on off control loop can be permanent, provide communication information for air compressor, avoided the air compressors that fault causes such as communication in remote I/O cabinet, power supply, module all to stop transport, the non-generation stopping with device damage accident of having stopped generator set, extended the working life of equipment, described self-holding circuit is comprised of DCS enabled instruction, R1 normally opened contact a and closing relay R1 and DCS stoppage in transit instruction, wherein after DCS enabled instruction and R1 normally opened contact a, is connected in series with closing relay R1 again; Closing relay R1 connects with DCS stoppage in transit instruction and forms loop circuit with the two ends of 220V ac power supply.
Embodiment two
As shown in Figure 1, a kind of air compressor control device, after DCS enabled instruction is sent, relay R 1 loop, coil place is connected, relay R 1 action, the normally opened contact b make contact of the normally opened contact a of relay R 1 and relay R 1, because the normally opened contact a of relay R 1 is closed, now 220VAC power supply is closed by the normally opened contact a(of relay R 1), process relay R 1 coil and zero line are always in on-state, so relay R 1 coil is always charged, another of relay R 1 is to normally opened contact b always in closed state, and this contact is used for starting air compressor, and under this mode, the instruction of DCS system transmitted can be controlled air compressor long-time running, the air compressor if DCS system need be stopped transport, DCS stoppage in transit instruction is sent, normally-closed contact after relay R 1 is the normally-closed contact of DCS stoppage in transit instruction output relay, when sending stoppage in transit instruction, DCS system disconnects, now zero line disconnects, relay R 1 coil losing electricity, relay R 1 normally opened contact disconnects, the air compressor that relay normally open contact b controls is stopped transport, by the design in this loop, can realize DCS system and by pulse command, control the start and stop of air compressor, avoided due to communication in remote I/O cabinet, power supply, the problems such as module fault cause air compressor to stop transport, stopped the non-generation that stops and cause device damage of generator set, extended service life of equipment, reduced the cost of power production, improved economic benefit.
Below in conjunction with the use of this structure, for the economic benefit that power plant brings is done following assessment:
With 600MW generator set, calculate, non-electric weight approximately 1,000,000 kilowatt hours of stopping loss of single unit single, rate for incorporation into the power network: 0.385 yuan/kilowatt hour, the non-brennschluss oil of single unit single loss: 20 tons, fuel oil unit price: 0.8 ten thousand yuan/ton, be 20 tons * 0.8 ten thousand yuan/ton=160,000 yuan of fuel losies, ten thousand yuan of 1,000,000 kilowatts * 0.385 yuan/kilowatt hour=38.5 of electric quantity loss, single unit single is non-stops losing 160,000 yuan+38.5 ten thousand yuan=54.5 ten thousand yuan altogether; Because of air compressor synergic system equipment, once trip, will cause two or four non-stopping of unit, according to annual generation probability calculation once, lose every year 2180000 yuan; According to the present invention, invent the self-holding circuit of design, realize DCS system and by pulse command, control serial air compressor and normally move, can avoid every year more than 200 ten thousand yuan of losses, there is significant economic benefit.
Claims (2)
1. an air compressor control device, is characterized in that: a pair of normally opened contact b that connects in loop, air compressor place, and be connected in parallel with self-holding circuit, then form loop circuit with the two ends of 220V ac power supply.
2. air compressor control device as claimed in claim 1, it is characterized in that: described self-holding circuit is comprised of DCS enabled instruction, R1 normally opened contact a and closing relay R1 and DCS stoppage in transit instruction, wherein DCS enabled instruction is connected in series with closing relay R1 after in parallel with R1 normally opened contact a again; Closing relay R1 connects with DCS stoppage in transit instruction and forms loop circuit with live wire, the zero line of 220V ac power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750405.2A CN103696953A (en) | 2013-12-31 | 2013-12-31 | Air compressor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750405.2A CN103696953A (en) | 2013-12-31 | 2013-12-31 | Air compressor control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103696953A true CN103696953A (en) | 2014-04-02 |
Family
ID=50358593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310750405.2A Pending CN103696953A (en) | 2013-12-31 | 2013-12-31 | Air compressor control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103696953A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113975A (en) * | 2018-07-23 | 2019-01-01 | 江森自控空调冷冻设备(无锡)有限公司 | Starting protection circuit and starting cabinet for air-conditioner set |
| CN113641154A (en) * | 2021-07-20 | 2021-11-12 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for air compressor DCS (distributed control System) and DCS control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081383A (en) * | 2000-09-07 | 2002-03-22 | Hoshizaki Electric Co Ltd | Starting load reduction circuit of compressor in cooling storage house |
| DE102006053524A1 (en) * | 2006-11-07 | 2008-05-08 | Danfoss Compressors Gmbh | Motor starting circuit for e.g. printed circuit board, has protective switch normally closed and opened during occurrence of error, and control device staying in connection with protective switch over lines and auxiliary winding |
| CN201461348U (en) * | 2009-06-05 | 2010-05-12 | 上海宝田新型建材有限公司 | Device for monitoring running state of air compressor system of COREX dreg vertical mill |
| CN101725515A (en) * | 2009-11-12 | 2010-06-09 | 厦门市万树科技有限公司 | Air compressor energy-saving control method |
| CN202390923U (en) * | 2011-12-12 | 2012-08-22 | 长葛市电力工业公司 | Automatic drainage system of substation cable trench |
| CN203098233U (en) * | 2012-12-31 | 2013-07-31 | 河南中烟工业有限责任公司 | Air compressor remote control device |
| CN103352836A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Water pumping control circuit |
| CN203717307U (en) * | 2013-12-31 | 2014-07-16 | 大唐贵州发耳发电有限公司 | Starting and stopping control structure of Atlas air compressor |
-
2013
- 2013-12-31 CN CN201310750405.2A patent/CN103696953A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081383A (en) * | 2000-09-07 | 2002-03-22 | Hoshizaki Electric Co Ltd | Starting load reduction circuit of compressor in cooling storage house |
| DE102006053524A1 (en) * | 2006-11-07 | 2008-05-08 | Danfoss Compressors Gmbh | Motor starting circuit for e.g. printed circuit board, has protective switch normally closed and opened during occurrence of error, and control device staying in connection with protective switch over lines and auxiliary winding |
| CN201461348U (en) * | 2009-06-05 | 2010-05-12 | 上海宝田新型建材有限公司 | Device for monitoring running state of air compressor system of COREX dreg vertical mill |
| CN101725515A (en) * | 2009-11-12 | 2010-06-09 | 厦门市万树科技有限公司 | Air compressor energy-saving control method |
| CN202390923U (en) * | 2011-12-12 | 2012-08-22 | 长葛市电力工业公司 | Automatic drainage system of substation cable trench |
| CN203098233U (en) * | 2012-12-31 | 2013-07-31 | 河南中烟工业有限责任公司 | Air compressor remote control device |
| CN103352836A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Water pumping control circuit |
| CN203717307U (en) * | 2013-12-31 | 2014-07-16 | 大唐贵州发耳发电有限公司 | Starting and stopping control structure of Atlas air compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113975A (en) * | 2018-07-23 | 2019-01-01 | 江森自控空调冷冻设备(无锡)有限公司 | Starting protection circuit and starting cabinet for air-conditioner set |
| CN113641154A (en) * | 2021-07-20 | 2021-11-12 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for air compressor DCS (distributed control System) and DCS control method |
| CN113641154B (en) * | 2021-07-20 | 2023-07-25 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for DCS system of air compressor and DCS control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203312781U (en) | Integrated anti-islanding protection system for distributed power generation | |
| CN203504285U (en) | UPS integrated power supply | |
| CN202196302U (en) | Mining explosion-proof and intrinsic safety vacuum combination switch control system | |
| CN110190585B (en) | B-type residual current monitoring and action circuit breaker with wireless transmission function | |
| CN203660492U (en) | Microcomputer comprehensive protection device having active/passive automatic switching function | |
| CN203445605U (en) | Protector for closing coil of breaker | |
| CN103696953A (en) | Air compressor control device | |
| CN203717307U (en) | Starting and stopping control structure of Atlas air compressor | |
| CN202524282U (en) | Device for preventing frequency converter from power shaking | |
| CN103312028A (en) | Delayed automatic switching starting circuit for dual power supplies | |
| CN201584666U (en) | Low-voltage comprehensive power distribution box | |
| CN201717670U (en) | Dual-power-supply switching device with overvoltage protection | |
| CN204068769U (en) | A kind of control loop no-harass switch device of low voltage motor | |
| CN204480043U (en) | The proving installation of pitch-variable system | |
| CN207677627U (en) | A kind of low-voltage ride-through power source for frequency converter control system | |
| CN102751140A (en) | Multifunctional switch apparatus with automatic reclosing function | |
| CN203434595U (en) | Dual power supply manual switch protection circuit | |
| CN108063546B (en) | Low-voltage ride through power supply control system of frequency converter | |
| CN202084903U (en) | Power failure protection circuit for sliding contact wire of material piling and taking machine | |
| CN202404433U (en) | Novel remote control device for electric device | |
| CN206412831U (en) | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected | |
| CN110931311A (en) | VSP5 switch electric control circuit | |
| CN216561501U (en) | Pushing coke signal sending device | |
| CN104518566B (en) | A kind of generating set and electrical network are powered automatic switchover program control device | |
| CN214225746U (en) | Motor operation control system based on PLC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140402 |