CN102808662A - Anti-interference device of expansion machine - Google Patents
Anti-interference device of expansion machine Download PDFInfo
- Publication number
- CN102808662A CN102808662A CN2012102935955A CN201210293595A CN102808662A CN 102808662 A CN102808662 A CN 102808662A CN 2012102935955 A CN2012102935955 A CN 2012102935955A CN 201210293595 A CN201210293595 A CN 201210293595A CN 102808662 A CN102808662 A CN 102808662A
- Authority
- CN
- China
- Prior art keywords
- control system
- decompressor
- distributed control
- expansion machine
- signal isolator
- 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
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The invention relates to an anti-interference device of an expansion machine. The anti-interference device comprises a signal isolator disposed between an output terminal of a revolution meter of the expansion machine and a distributed control system. The signal isolator is connected with the output terminal of the revolution meter of the expansion machine through a highly anti-interference network cable, and the signal isolator is also connected with the distributed control system through another highly anti-interference network cable. The anti-interference device prevents danger signals from entering the distributed control system, avoids abnormal fluctuation of revolving speed of the expansion machine, avoids production fault of the distributed control system caused by bumping of the expansion machine due to abnormal revolution speed, and guarantees safety in production.
Description
Technical field
The present invention relates to a kind of means for anti-jamming, in particular, relate to a kind of means for anti-jamming of decompressor.
Background technique
The booster expansion turbine group utilizes gas to carry out adiabatic expansion through decompressor, produces the necessary cold of air separation facility, and the mechanical work that it produced is pressurized machine again and absorbs, in order to the pressure of raising pressurization gas, for the normal air feed of system provides guarantee.If the unusual fluctuations of decompressor rotating speed cause decompressor to jump car, will influence the normal operation of system.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of existing technology, the unusual fluctuations of a kind of elimination decompressor rotating speed is provided, the means for anti-jamming of the decompressor that guarantees safe production.
In order to solve above technical problem, the present invention provides a kind of means for anti-jamming of decompressor, comprises signal isolator, and said signal isolator is arranged between decompressor tachometer Out let and the Distributed Control System.
The technological scheme that the present invention further limits is: the strong netting twine of use antijamming capability is connected between said signal isolator and the decompressor tachometer Out let.
Further, use the strong netting twine of antijamming capability to be connected between said signal isolator and the Distributed Control System.
Further, the netting twine that said antijamming capability is strong comprises twisted-pair feeder, concentric cable and optical cable.
The invention has the beneficial effects as follows: the means for anti-jamming of a kind of decompressor of the present invention; Through signalization isolator between decompressor tachometer Out let and Distributed Control System; Prevent that danger signal from getting into Distributed Control System; Stopped the unusual fluctuations phenomenon of decompressor rotating speed, avoided decompressor to jump the production fault that car brings Distributed Control System, for safety in production provides guarantee because of rotating speed causes unusually.
Description of drawings
Fig. 1 is the structured flowchart of the means for anti-jamming of a kind of decompressor of the present invention.
Embodiment
Embodiment 1
The means for anti-jamming of a kind of decompressor that present embodiment provides, structured flowchart is as shown in Figure 1, comprises signal isolator, and said signal isolator is arranged between decompressor tachometer Out let and the Distributed Control System.
Signal isolator has adopted advanced digitizing technique; Aspect the inhibition of high and low frequency undesired signal, outstanding representation is being arranged all; Even in the high-power frequency conversion control system, still can reliably use; Inner digitizing adjustment, inferred-zero and full scale potentiometer, the automatic dynamic of adopting calibrated many advanced technologies such as zero point, the automatic compensation of temperature drift, makes the stability of system and the assurance that reliability obtains science.
Distributed Control System, be that decentralized control, centralized operation, differentiated control, flexible configuration, configuration are convenient, having computer, communication, demonstration and control function is the control system of one.
And, between signal isolator and decompressor tachometer Out let and between signal isolator and the Distributed Control System, all use the strong netting twine of antijamming capability to be connected, the netting twine that said antijamming capability is strong comprises twisted-pair feeder, concentric cable and optical cable.In the present embodiment, the netting twine that antijamming capability is strong is a twisted-pair feeder, by many data lines that line is formed.The netting twine twisted-pair feeder has adopted the mutual stranded mode of the plain conductor of a pair of mutual insulating to resist a part of external electromagnetic wave interference.Twist the copper conductor of two insulated together mutually by certain density, can reduce the degree that signal disturbs, the electric wave that the electric wave of each root lead radiation in transmission can be sent on other single line is offset.The name of " twisted-pair feeder " also is to come therefrom.The netting twine twisted-pair feeder generally is entwined by two 22-26 insulated copper leads each other, and during actual the use, twisted-pair feeder is wrapped in the insulated cable sleeve pipe twisted-pair feeder by many together.Typical twisted-pair feeder has four pairs, also has more twisted-pair feeder to be placed in the cable sleeve.We are referred to as twisted-pair cable for these.In twisted-pair cable (also claiming twisted-pair cable), not collinear to having different lay length, generally speaking, lay length is pressed left hand lay in 38.1cm to 14cm.
In the conventional art, use be shielded signal wire, shielded signal wire is the outer wrap one deck screen layer at signal conductor, plays certain jamproof effect, still, its antijamming capability is not strong.In the present embodiment, use the strong netting twine of antijamming capability to replace shielded signal wire, further shield danger signal, guaranteed the normal operation of system.
The means for anti-jamming of a kind of decompressor of the present invention; Through signalization isolator between decompressor tachometer Out let and Distributed Control System; Prevent that danger signal from getting into Distributed Control System; Stopped the unusual fluctuations phenomenon of decompressor rotating speed, avoided decompressor to jump the production fault that car brings Distributed Control System, for safety in production provides guarantee because of rotating speed causes unusually.
Except that the foregoing description, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1. the means for anti-jamming of a decompressor is characterized in that, comprises signal isolator, and said signal isolator is arranged between decompressor tachometer Out let and the Distributed Control System.
2. the means for anti-jamming of a kind of decompressor according to claim 1 is characterized in that, uses the strong netting twine of antijamming capability to be connected between said signal isolator and the decompressor tachometer Out let.
3. the means for anti-jamming of a kind of decompressor according to claim 1 is characterized in that, uses the strong netting twine of antijamming capability to be connected between said signal isolator and the Distributed Control System.
4. the means for anti-jamming of a kind of decompressor according to claim 3 is characterized in that, the netting twine that said antijamming capability is strong comprises twisted-pair feeder, concentric cable and optical cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102935955A CN102808662A (en) | 2012-07-30 | 2012-07-30 | Anti-interference device of expansion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102935955A CN102808662A (en) | 2012-07-30 | 2012-07-30 | Anti-interference device of expansion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102808662A true CN102808662A (en) | 2012-12-05 |
Family
ID=47232508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102935955A Pending CN102808662A (en) | 2012-07-30 | 2012-07-30 | Anti-interference device of expansion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102808662A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662863A (en) * | 2008-08-27 | 2010-03-03 | 南京汉德森科技股份有限公司 | Intelligent control system for LED tunnel lamps and method for controlling LED tunnel lamps |
| CN101666826A (en) * | 2009-09-27 | 2010-03-10 | 陕西电力科学研究院 | Overvoltage online monitoring device based on dual time base sampling technology |
| CN101846998A (en) * | 2010-04-13 | 2010-09-29 | 德阳瑞能电力科技有限公司 | Redundant digital electric-hydraulic control system for turbine |
| CN102510352A (en) * | 2011-10-31 | 2012-06-20 | 北京龙鼎源科技有限公司 | Industrial network terminal |
| CN202788952U (en) * | 2012-07-30 | 2013-03-13 | 江苏永钢集团有限公司 | Anti-jamming device of expansion machine |
-
2012
- 2012-07-30 CN CN2012102935955A patent/CN102808662A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662863A (en) * | 2008-08-27 | 2010-03-03 | 南京汉德森科技股份有限公司 | Intelligent control system for LED tunnel lamps and method for controlling LED tunnel lamps |
| CN101666826A (en) * | 2009-09-27 | 2010-03-10 | 陕西电力科学研究院 | Overvoltage online monitoring device based on dual time base sampling technology |
| CN101846998A (en) * | 2010-04-13 | 2010-09-29 | 德阳瑞能电力科技有限公司 | Redundant digital electric-hydraulic control system for turbine |
| CN102510352A (en) * | 2011-10-31 | 2012-06-20 | 北京龙鼎源科技有限公司 | Industrial network terminal |
| CN202788952U (en) * | 2012-07-30 | 2013-03-13 | 江苏永钢集团有限公司 | Anti-jamming device of expansion machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104538933B (en) | A kind of motor differential protective system and method | |
| CN202788952U (en) | Anti-jamming device of expansion machine | |
| CN102808662A (en) | Anti-interference device of expansion machine | |
| US8384235B2 (en) | Wind turbine generator | |
| CN109920601B (en) | Power cable suitable for partial discharge detection positioning | |
| CN102841245A (en) | Device for detecting end screen current parameter of high-voltage transformer bushing in real time, and control method for device | |
| US10601527B2 (en) | Failure detection system of transmitting antennas | |
| CN211859483U (en) | Cable connection system of DCS control system | |
| CN103035329A (en) | Anti-interference composite wire cable | |
| CN207380099U (en) | A kind of multi channel signals conversion equipment | |
| US20120274067A1 (en) | Wind turbine generator | |
| CN207198231U (en) | Large Copacity flexible direct current voltage measurement system based on digital quantity transmission | |
| CN203910324U (en) | Anti-interference sensor signal cable | |
| CN201417631Y (en) | Thermostable low-capacitance anti-interference low-smoke halogen-free flame-proof computer cable | |
| CN203774010U (en) | Cable shield improving structure for preventing common-mode interference | |
| CN205483250U (en) | High pressure parallel reactor iron core vibration measuring device | |
| CN203774659U (en) | Cable shielding improved structure preventing common-mode interference with factor of resistance | |
| CN104575745A (en) | Novel high-performance nuclear plant cable | |
| CN203552777U (en) | Cable | |
| CN207541995U (en) | A kind of digital transformer substation breakdown maintenance robot Special-type monitoring cable | |
| CN208489007U (en) | A kind of embossing sheath copper core mineral insulated cable | |
| CN202748405U (en) | Device for detecting end screen current parameter of high-voltage transformer bushing in real time. | |
| CN216526092U (en) | Fault detection equipment for gas insulated totally-enclosed combined electrical apparatus | |
| CN203386529U (en) | A double-core shield-type power cable | |
| CN206789873U (en) | The DCS system of signal interference can be suppressed |
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: 20121205 |