CN106292581A - A kind of DCS configuration method preventing temperature survey value mutation - Google Patents
A kind of DCS configuration method preventing temperature survey value mutation Download PDFInfo
- Publication number
- CN106292581A CN106292581A CN201610659998.5A CN201610659998A CN106292581A CN 106292581 A CN106292581 A CN 106292581A CN 201610659998 A CN201610659998 A CN 201610659998A CN 106292581 A CN106292581 A CN 106292581A
- Authority
- CN
- China
- Prior art keywords
- value
- module
- thermal resistance
- daca
- difference
- 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
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000035772 mutation Effects 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- XBGNERSKEKDZDS-UHFFFAOYSA-N n-[2-(dimethylamino)ethyl]acridine-4-carboxamide Chemical compound C1=CC=C2N=C3C(C(=O)NCCN(C)C)=CC=CC3=CC2=C1 XBGNERSKEKDZDS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 230000001934 delay Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41835—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by programme execution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Automation & Control Theory (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of DCS configuration method preventing temperature survey value mutation, it is characterized in that described DCS configuration method includes: one connects and accepts the thermal resistance passage of the thermal resistance original measurement numerical value from production scene, through DACA module, by thermal resistance passage from the thermal resistance original measurement numerical value of production scene, numerical value that be converted into band engineering unit, that can show on DCS human-machine operation picture；One to be connected to the PUSHA module of DACA module 3 seconds be a cycle with timer, carries out historgraphic data recording；Doing difference with history value before actual instantaneous value and 3s, under normal production scenarios, difference is less than presetting difference desired value 20, and the SELREALA being at this moment connected to RSA trigger and DACA module selects module output valve to be thermal resistance temperature surveying actual value；If difference is more than 20, the artificial previously given safeguard protection value that at this moment SELREALA selects module output valve to be connected blocks of values.
Description
Technical field
The present invention relates to a kind of DCS configuration method preventing temperature survey value mutation, be widely used in petrochemical industry,
The technique in multiple fields such as smelting iron and steel, processing and manufacturing, air separation, papermaking chemical industry produces and device temperature is measured and chain guarantor
Protect.
Background technology
The rotating machinerys such as the air compressor machine in deep cooling process for separating air separation unit are the key equipments of air separation unit, rise in production
The effect of raw air compression conveying.In order to protect the safe and stable operation of air compressor machine, Air Compressor Equipment producer arranges installation
The temperature detection of compression bearings at different levels, if temperature is stopped beyond safe operating temperature, chain air compressor machine, protection air compressor machine sets
Standby safety.But, problem is that temperature measuring resistors is in inside air compressor machine bearing gear roller box, the impact of lubricating oil and oscillation ring
Border, often such that thermal resistance damages or wiring broken string, causes temperature survey value mutation, and chain air compressor machine stops, and it is unnecessary to cause
Parking accident, to enterprise produce bring huge economic loss.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, and a kind of DCS by various logic block is provided
Configuration, efficiently solves the chain accident of temperature survey of thermal resistance broken string induction, decreases the economic damage brought because of parking accident
Lose, improve the DCS configuration method preventing temperature survey value mutation of work efficiency.
It is an object of the invention to complete by following technical solution, a kind of DCS group preventing temperature survey value mutation
State method, described DCS configuration method includes:: one connects and accepts the thermal resistance original measurement numerical value from production scene
Thermal resistance passage TIAS1001_1, through DACA module, by thermal resistance passage from the thermal resistance original measurement number of production scene
Value, numerical value that be converted into band engineering unit, that can show on DCS human-machine operation picture；
One to be connected to the PUSHA module of DACA module 3 seconds be a cycle with timer, carries out historgraphic data recording；With actual wink
Before duration and 3s, history value does difference, and under normal production scenarios, difference is less than presetting difference desired value 20, at this moment, phase thereafter
RSA trigger even is output as 0, and the SELREALA selection module output valve being simultaneously coupled to RSA trigger and DACA module is
Thermal resistance temperature surveying actual value；If difference is more than 20, then RSA trigger is output as 1, and at this moment SELREALA selects module defeated
Go out the artificial previously given safeguard protection value of value blocks of values NUMERICA_1 for being connected, such as 60, the output valve of final DACA_2
Fixing, it is not up to linkage value, thus effectively avoids the temperature survey distortion that temperature survey thermal resistance broken string causes.
As preferably: be also connected to before described PUSHA module be counted by time delays functional device OFFDALAY and time
Time the loop that formed of device series connection, wherein time delays functional device OFFDALAY incoming level signal, after time delay 1 second effectively；And time
Between timer then preset time desired value 2 seconds, timing is arrived, and TIMER timer exports high level signal automatically to phase below
PUSHA module even；
Described PUSHA module rear is connected to blocks of values NUMERC and the DACA being sequentially connected in series-1 module, and be connected to calculate
Functional device AUXCALC and more than comparison block GTA, described calculation block AUXCALC can be by current thermal resistance measured value and 3
Before second, history value subtraction goes difference, and by more than connecting rest-set flip-flop after comparison block GTA, when the S end of this rest-set flip-flop is 1,
It is output as 1, when R end is 1, is output as 0.
As preferably: described rest-set flip-flop is with SR RESET, and described SR RESET passes through PULEA
Module is connected to the R end of rest-set flip-flop, after thermal resistance disconnection fault is got rid of, clicks on RESET SR, and RSA trigger is multiple
Position, is output as 0, and SELREALA selects module output valve to be thermal resistance temperature surveying actual value；Described selection functional device
SELREAL, when its sheet selects end to be 0, output selects IN1, and when sheet selects end to be 1, output selects IN2.
The normal change measuring temperature has the Changing Pattern of thermograde, can not undergo mutation, the present invention based on
This principle, compares Current Temperatures measured value and 3 seconds front measured temperatures, if thermometric difference was at 3 seconds
Interior change suddenly more than tens degree (by experiment, tentative 20 degree), i.e. can be concluded that thermal resistance measurement broken string, with manually setting in advance
Fixed safety value substitutes measured temperature, thus avoids thermal resistance to break the production equipment interlocking accident caused.
The present invention DCS configuration by various logic block, the temperature survey efficiently solving thermal resistance broken string induction is chain
Accident, decreases the economic loss brought because of parking accident, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is DCS configuration figure of the present invention.
Fig. 2 be of the present invention prevent thermal resistance break configuration program block diagram.
Detailed description of the invention
Below in conjunction with the introduction that accompanying drawing is detailed to way of the present invention: Fig. 1, shown in 2, one of the present invention prevents temperature
The DCS configuration method of degree measured value sudden change, described DCS configuration method includes:: one connects and accepts the heat from production scene
The thermal resistance passage TIAS1001_1 of resistance original measurement numerical value, through DACA module, by thermal resistance passage from production scene
Thermal resistance original measurement numerical value, numerical value that be converted into band engineering unit, that can show on DCS human-machine operation picture；
One to be connected to the PUSHA module of DACA module 3 seconds be a cycle with timer, carries out historgraphic data recording；With actual wink
Before duration and 3s, history value does difference, and under normal production scenarios, difference is less than presetting difference desired value 20, at this moment, phase thereafter
RSA trigger even is output as 0, and the SELREALA selection module output valve being simultaneously coupled to RSA trigger and DACA module is
Thermal resistance temperature surveying actual value；If difference is more than 20, then RSA trigger is output as 1, and at this moment SELREALA selects module defeated
Go out the artificial previously given safeguard protection value of value blocks of values NUMERICA_1 for being connected, such as 60, the output valve of final DACA_2
Fixing, it is not up to linkage value, thus effectively avoids the temperature survey distortion that temperature survey thermal resistance broken string causes.
Shown in Fig. 1, also it is connected to by time delays functional device OFFDALAY and time timing before described PUSHA module
The loop that device series connection is formed, wherein time delays functional device OFFDALAY incoming level signal, after time delay 1 second effectively；And the time
Timer then presets time desired value 2 seconds, and timing is arrived, and TIMER timer exports high level signal automatically to connected behind
PUSHA module；
Described PUSHA module rear is connected to blocks of values NUMERC and the DACA being sequentially connected in series-1 module, and be connected to calculate
Functional device AUXCALC and more than comparison block GTA, described calculation block AUXCALC can be by current thermal resistance measured value and 3
Before second, history value subtraction goes difference, and by more than connecting rest-set flip-flop after comparison block GTA, when the S end of this rest-set flip-flop is 1,
It is output as 1, when R end is 1, is output as 0.
Rest-set flip-flop of the present invention is with SR RESET, and described SR RESET is by PULEA mould
Block is connected to the R end of rest-set flip-flop, after thermal resistance disconnection fault is got rid of, and click RESET SR, RSA trigger reset,
Being output as 0, SELREALA selects module output valve to be thermal resistance temperature surveying actual value；Described selection functional device SELREAL,
When its sheet selects end to be 0, output selects IN1, and when sheet selects end to be 1, output selects IN2.
A kind of DCS configuration method preventing temperature survey value mutation of the present invention, it is by the DCS of various logic block
Configuration, efficiently solves the chain accident of temperature survey of thermal resistance broken string induction.
The normal change measuring temperature has the Changing Pattern of thermograde, can not undergo mutation.The present invention is base
In this principle, Current Temperatures measured value and 3 seconds front measured temperatures are compared, if thermometric difference is 3
Suddenly change more than tens degree (by testing, tentative 20 degree) in second, i.e. can be concluded that thermal resistance measures broken string, with the most in advance
The safety value set substitutes measured temperature, thus avoids thermal resistance to break the production equipment interlocking accident that causes.This think of
Dimension method, in DCS configuration, is achieved by building of various logic functional device, and DCS is with the PKS-200 of Honeywell Inc.
As a example by system, configuration logic is as shown in accompanying drawing.
Claims (3)
1. the DCS configuration method preventing temperature survey value mutation, it is characterised in that described DCS configuration method includes:: one
Connect and accept the thermal resistance passage TIAS1001_1 of the thermal resistance original measurement numerical value from production scene, through DACA mould
Block, by thermal resistance passage from the thermal resistance original measurement numerical value of production scene, be converted into band engineering unit, can be at DCS
The numerical value of display on human-machine operation picture；
One to be connected to the PUSHA module of DACA module 3 seconds be a cycle with timer, carries out historgraphic data recording；With actual wink
Before duration and 3s, history value does difference, and under normal production scenarios, difference is less than presetting difference desired value 20, at this moment, phase thereafter
RSA trigger even is output as 0, and the SELREALA selection module output valve being simultaneously coupled to RSA trigger and DACA module is
Thermal resistance temperature surveying actual value；If difference is more than 20, then RSA trigger is output as 1, and at this moment SELREALA selects module defeated
Go out the artificial previously given safeguard protection value of value blocks of values NUMERICA_1 for being connected, such as 60, the output valve of final DACA_2
Fixing, it is not up to linkage value, thus effectively avoids the temperature survey distortion that temperature survey thermal resistance broken string causes.
The DCS configuration method preventing temperature survey value mutation the most according to claim 1, it is characterised in that described
The loop formed by time delays functional device OFFDALAY and time timer series connection also it is connected to, wherein before PUSHA module
Time delays functional device OFFDALAY incoming level signal, after time delay 1 second effectively；Time timer then presets time mesh
Scale value 2 seconds, timing is arrived, and TIMER timer exports high level signal automatically to PUSHA module connected behind；
Described PUSHA module rear is connected to blocks of values NUMERC and the DACA being sequentially connected in series-1 module, and be connected to calculate merit
Can block AUXCALC and more than comparison block GTA, described calculation block AUXCALC can be by current thermal resistance measured value and 3 seconds
Front history value subtraction goes difference, and by more than connecting rest-set flip-flop after comparison block GTA, when the S end of this rest-set flip-flop is 1, defeated
Going out is 1, when R end is 1, is output as 0.
The DCS configuration method preventing temperature survey value mutation the most according to claim 1 and 2, it is characterised in that described
Rest-set flip-flop is with SR RESET, and described SR RESET is connected to the R of rest-set flip-flop by PULEA module
End, after thermal resistance disconnection fault is got rid of, clicks on RESET SR, RSA trigger reset, is output as 0, and SELREALA selects
Selecting module output valve is thermal resistance temperature surveying actual value；Described selection functional device SELREAL, when its sheet selects end to be 0, output
Selecting IN1, when sheet selects end to be 1, output selects IN2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610659998.5A CN106292581A (en) | 2016-08-12 | 2016-08-12 | A kind of DCS configuration method preventing temperature survey value mutation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610659998.5A CN106292581A (en) | 2016-08-12 | 2016-08-12 | A kind of DCS configuration method preventing temperature survey value mutation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106292581A true CN106292581A (en) | 2017-01-04 |
Family
ID=57668716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610659998.5A Pending CN106292581A (en) | 2016-08-12 | 2016-08-12 | A kind of DCS configuration method preventing temperature survey value mutation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106292581A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357169A (en) * | 2017-07-10 | 2017-11-17 | 山东钢铁集团日照有限公司 | A kind of Automated condtrol model for shielding interference signal |
| CN108958218A (en) * | 2018-06-27 | 2018-12-07 | 浙江智海化工设备工程有限公司 | A kind of functional module preventing Temperature jump for control system |
| CN110360541A (en) * | 2019-07-12 | 2019-10-22 | 河北涿州京源热电有限责任公司 | Thermal power plant's DCS system boiler high temperature heating surface abnormal conditions Online statistics method |
| CN111443667A (en) * | 2020-03-27 | 2020-07-24 | 中海石油深海开发有限公司 | Method and device for preventing liquid level transmitter jumping system from being turned off |
| CN115129097A (en) * | 2021-03-26 | 2022-09-30 | 浙江苏泊尔家电制造有限公司 | Control method for preventing temperature measurement abnormity of cooking appliance and cooking appliance |
| CN115306692A (en) * | 2022-07-14 | 2022-11-08 | 深圳市海格金谷工业科技有限公司 | Method and control device for temperature alarm of compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465538A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Temperature protection method for DCS system |
| CN103885424A (en) * | 2014-03-28 | 2014-06-25 | 大唐贵州发耳发电有限公司 | DCS system temperature line breakage protection logic |
| US20150149119A1 (en) * | 2013-11-26 | 2015-05-28 | Northrop Grumman Systems Corporation | Wavelet based monitoring of system parameters |
-
2016
- 2016-08-12 CN CN201610659998.5A patent/CN106292581A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465538A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Temperature protection method for DCS system |
| US20150149119A1 (en) * | 2013-11-26 | 2015-05-28 | Northrop Grumman Systems Corporation | Wavelet based monitoring of system parameters |
| CN103885424A (en) * | 2014-03-28 | 2014-06-25 | 大唐贵州发耳发电有限公司 | DCS system temperature line breakage protection logic |
Non-Patent Citations (1)
| Title |
|---|
| 李凤霞等: ""DCS在化工生产控制中的应用"", 《化学推进剂与高分子材料》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357169A (en) * | 2017-07-10 | 2017-11-17 | 山东钢铁集团日照有限公司 | A kind of Automated condtrol model for shielding interference signal |
| CN107357169B (en) * | 2017-07-10 | 2020-07-21 | 山东钢铁集团日照有限公司 | Automatic control model for shielding interference signals |
| CN108958218A (en) * | 2018-06-27 | 2018-12-07 | 浙江智海化工设备工程有限公司 | A kind of functional module preventing Temperature jump for control system |
| CN110360541A (en) * | 2019-07-12 | 2019-10-22 | 河北涿州京源热电有限责任公司 | Thermal power plant's DCS system boiler high temperature heating surface abnormal conditions Online statistics method |
| CN111443667A (en) * | 2020-03-27 | 2020-07-24 | 中海石油深海开发有限公司 | Method and device for preventing liquid level transmitter jumping system from being turned off |
| CN115129097A (en) * | 2021-03-26 | 2022-09-30 | 浙江苏泊尔家电制造有限公司 | Control method for preventing temperature measurement abnormity of cooking appliance and cooking appliance |
| CN115129097B (en) * | 2021-03-26 | 2024-06-04 | 浙江苏泊尔家电制造有限公司 | Control method for preventing abnormal temperature measurement of cooking utensil and cooking utensil |
| CN115306692A (en) * | 2022-07-14 | 2022-11-08 | 深圳市海格金谷工业科技有限公司 | Method and control device for temperature alarm of compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106292581A (en) | A kind of DCS configuration method preventing temperature survey value mutation | |
| CN105806715B (en) | A kind of high-temerature creep Deformation Prediction method | |
| CN102636730A (en) | Temperature rise strain monitoring and alarming and fault analysis method for composite submarine cable | |
| CN106709905B (en) | Vibration damper fault online detection and identification method based on binocular vision image | |
| CN103855692B (en) | A kind of acquisition methods of multi partition relay protection constant value | |
| CN203658765U (en) | Control system interlocking protection device based on temperature measurement | |
| Tamura et al. | Improvement of anomaly detection performance using packet flow regularity in industrial control networks | |
| CN105700508B (en) | One kind heating method for detecting abnormality | |
| CN106599633B (en) | A kind of method and apparatus of tamper | |
| CN117292528A (en) | Real-time early warning method and system for fire risk of electric circuit | |
| CN112986711A (en) | Method and system for monitoring an electrical installation | |
| CN105281295A (en) | Method and safety device for protecting an electric motor and/or a work device coupled to it against malfunction | |
| CN114199505B (en) | Generator stator bar flow performance evaluation method based on correlation analysis | |
| CN103474381A (en) | Method utilizing temperature difference for monitoring positional deviation of wafer in high temperature cavity | |
| Song et al. | Isolation forest based detection for false data attacks in power systems | |
| CN106019060A (en) | On-off input signal disconnection detection method | |
| CN104360698B (en) | There is the photoresistance board of temp. control function and temperature control system thereof and temperature-controlled process | |
| Yan et al. | A stealthier false data injection attack against the power grid | |
| KR102336205B1 (en) | Method for Detecting Abnomal Temperature using Fire Preventing Device of Rack | |
| Leao et al. | Machine learning-based false data injection attack detection and localization in power grids | |
| CN107436585B (en) | The control method of temperature interlock protection | |
| CN108229223B (en) | Method and device for preventing electronic product from being disassembled | |
| TWI437241B (en) | Programmable circuit detection structure and detection method of cooling fan | |
| KR100852718B1 (en) | Method for tracing trip-cause in industrial plant | |
| CN205117781U (en) | Kiln fan trouble autoalarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |