CN102366967A - Steam curing automatic temperature control system - Google Patents
Steam curing automatic temperature control system Download PDFInfo
- Publication number
- CN102366967A CN102366967A CN2011103754670A CN201110375467A CN102366967A CN 102366967 A CN102366967 A CN 102366967A CN 2011103754670 A CN2011103754670 A CN 2011103754670A CN 201110375467 A CN201110375467 A CN 201110375467A CN 102366967 A CN102366967 A CN 102366967A
- Authority
- CN
- China
- Prior art keywords
- temperature
- control
- temperature control
- industrial computer
- room
- 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
Classifications
-
- 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
- Control Of Temperature (AREA)
Abstract
The invention provides a steam curing automatic temperature control system, comprising a curing room, wherein a concrete product is arranged in the curing room, a steam pipeline is laid in the curing room, an industrial personal computer and a control electric cabinet are arranged in a control room, the control electric cabinet is internally provided with a temperature control instrument, the temperature control instrument is connected with the industrial personal computer, the input terminal of the temperature control instrument is connected with a temperature sensor which is used for measuring the temperature in the curing room and a surface sensor which is used for measuring the temperature of the surface of the concrete product, the output terminal of the temperature control instrument is connected with an electric control valve; and the electric control valve is arranged at an inlet of the steam pipeline. The steam curing automatic temperature control system provided by the invention has the advantages that automatic temperature control of steam curing can be carried out on multiple concrete curing rooms at the same time, and special curing can be respectively carried out on the concrete product in one curing room. Steam curing operation of all the concrete products can be subjected to full-functional remote control by virtue of the industrial personal computer arranged in the control room, temperature control data can be stored for a long time and can be inquired anytime, and curves and tables can be printed at will.
Description
Technical field
The present invention relates to a kind of automation temperature control system, relate in particular to a kind of auto temperature controlled system that is used for concrete production steam curing process.
Background technology
Concrete product is widely used, and its production process generally need be carried out steam curing.In recent years, novel concrete product continues to bring out, and they have special demands to maintenance.China is vast in territory; The four seasons temperature difference is big, uses the natural curing method to have uncertainty, and the curing temperature fluctuation is big, curing time is not established a capital and can not be guaranteed quality of concrete; Must adopt the temperature process curve and the official hour of regulation to carry out maintenance; So that in different environment, guarantee product quality, enhance productivity, therefore concrete steam curing process seems very important.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, the concrete steam maintenance automation temperature control system that a kind of accuracy is high, flexibility is good be provided, solve produce in labour intensity big, temperature control is inaccurate, be easy to generate problem such as error.
According to technical scheme provided by the invention, said steam curing automation temperature control system comprises fog room; Concrete product is positioned at fog room; In fog room, lay jet chimney, industrial computer that in the control room, is provided with and the electric cabinet of control are controlled installing temperature control instrument in the electric cabinet; Said temperature control instrument links to each other with industrial computer; And the input of said temperature control instrument connects the temperature sensor of measuring the maintenance indoor temperature and the surface probe of measuring the concrete product surface temperature, and the output of temperature control instrument connects electric control valve; Said electric control valve is installed on the inlet of jet chimney, is used to regulate vapor flow rate; The concrete surface temperature value that fog room temperature value that said temperature sensor is measured in real time and surface probe are measured is sent to the temperature control instrument in the electric cabinet of control; Send industrial computer again to; Industrial computer with the temperature process curve ratio of temperature value that receives and setting; The aperture of adjustment electric control valve makes temperature and concrete surface temperature in the fog room reach setting.
Said temperature control instrument comprises embedded microprocessor, and the input of said embedded microprocessor connects a plurality of temperature transmitters through input interface circuit, the input of temperature transmitter respectively with fog room in temperature sensor link to each other with surface probe; The output of said embedded microprocessor is connected with electric control valve through power amplifier.
The adjustment strategy that said industrial computer adopts is that pid algorithm combines with expertise: according to plant characteristic and technological requirement; Design some control laws; Utilize " IF ... THEN ... " One one Expert Rules explained in statement, in advance method of adjustment under the rule and adjustment parameter is stored in the industrial computer; Said Expert Rules determines control mode and whether need revise proportionality coefficient K according to the size of current deviation e (n) and rate of change △ e (n) thereof
P, storage gain K
IWith differential gain K
DIn the control procedure, industrial computer need be by System Discrimination result or a certain object function tuning PID parameter, but by current state basic pid parameter is adjusted.
Said industrial computer can be set the parameter of a plurality of fog rooms respectively, and each fog room is carried out independent control.
Advantage of the present invention is: simultaneously a plurality of concrete fog rooms are carried out the control of steam-cured automation temperature, also can be respectively the concrete product of some fog rooms be carried out special maintenance.The steam curing work of all concrete products can be carried out Full Featured Long-distance Control through the industrial computer that is positioned at the control room, but temperature control data long preservation, and curve and form etc. are printed in inquiry arbitrarily at any time.Because this system separates from hardware the control of each fog room, therefore improved the reliability of system greatly.
Description of drawings
Fig. 1 is the circuit structure diagram of native system.
Fig. 2 is the working state schematic representation of native system.
Fig. 3 is the hardware structure diagram of temperature control instrument.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As depicted in figs. 1 and 2, this automation temperature control system is arranged in the workshop of factory, comprises fog room 6; Concrete product 9 is positioned at fog room 6; In fog room 6, lay jet chimney 11, it is characterized in that: industrial computer 1 that in the control room, is provided with and the electric cabinet 4 of control, control installing temperature control instrument in the electric cabinet 4; Said temperature control instrument links to each other with industrial computer 1; And the input of said temperature control instrument connects the temperature sensor 7 of measuring the maintenance indoor temperature and the surface probe 8 of measuring concrete product 9 surface temperatures, and the output of temperature control instrument connects electric control valve 5; Said electric control valve 5 is installed on the inlet of jet chimney 11, is used to regulate vapor flow rate.Industrial computer 1 links to each other with the electric cabinet 4 of control, sends temperature control instruction through the wire communication mode.
Industrial computer 1 can be set the parameter of a plurality of fog rooms 6 respectively, and each fog room 6 is carried out independent control.This automation temperature control system is realized the temperature control to the concrete production process through the control to high temperature and high pressure steam.Through measurement, carry out the temperature tracing and monitoring to maintenance indoor temperature, surface temperature of concrete.Show all temps situation of change with temperature-time graph simultaneously.
As shown in Figure 2, this automation temperature control system is provided with industrial computer 1, display 2, printer 3 and controls electric cabinet 4 in the control room.Adopt the automation hardware platform of industrial computer 1 as system.Control installing temperature control instrument in the electric cabinet 4, it is communicated by letter with industrial computer 1 on the one hand, collecting temperature signal, and the order of sending control electric control valve 5 on the other hand.The jet chimney 11 that in fog room 6, lays is snakelike arrangement, and its flow sprays steam by electric control valve 5 controls continuously.Mounting temperature sensor 7 in fog room 6, are used to measure indoor temperature.Lay surface probe 8 at the upper surface of concrete product 9, be used to measure the surface temperature of concrete product 9.
When a block concrete product 9 cast finishes, after waiting for a period of time, at its surface mount surface probe 8.Equidistance is laid concrete product 9 on pedestal 10.Industrial computer 1 is provided with the control parameter according to technological requirement, sends from the control room to start steam-cured order.Fog room 6 temperature signals that temperature sensor 7 is measured in real time are sent to the temperature control instrument of controlling in the electric cabinet 4 with the surface temperature of the concrete product 9 that surface probe 8 is measured; And send industrial computer 1 to through wire communication; Industrial computer 1 with the temperature process curve ratio of temperature value that receives and setting; Through control algolithm, the aperture of adjustment electric control valve 5 makes temperature and the surface temperature of concrete 9 in the fog room 6 reach setting.
As shown in Figure 3, be the hardware block diagram of temperature control instrument, its built-in embedded microprocessor has real time operating system, can intelligently timely, fast processing on-site signal.The input of said embedded microprocessor connects a plurality of temperature transmitters through input interface circuit, and the input of temperature transmitter links to each other with surface probe 8 with fog room 6 interior temperature sensors 7 respectively; The output of said embedded microprocessor is connected with electric control valve 5 through power amplifier.After the start-up control process, said temperature control instrument is measured the temperature of fog room and the temperature of concrete surface in real time according to technological requirement, and according to the expert PID control algorithm, the aperture of adjustment electric control valve satisfies the arts demand of producing.Simultaneously measurement data is sent to industrial computer through port, is kept in the database, be used to make form and consult as historical data.
The adjustment strategy is according to the expert PID control algorithmization, and it is a pid algorithm and the combining of expertise.Pid algorithm is the control procedure of linear adjustment system effectively, but not obvious for system effect non-linear, large time delay.Utilize expert system knowledge base output to revise pid parameter, change pid control mode to reach best PID control effect.According to plant characteristic and technological requirement, designed some control laws, utilize " IF ... THEN ... " One one Expert Rules explained in statement, in advance method of adjustment under the rule and adjustment parameter is stored in the industrial computer 1.Expert Control Rules determines control mode and whether need revise proportionality coefficient K according to the size of current deviation e (n) and rate of change △ e (n) thereof
P, storage gain K
IWith differential gain K
DIn the control procedure, industrial computer 1 need be by System Discrimination result or a certain object function tuning PID parameter, but by current state basic pid parameter is adjusted.Expert's summary of experience is become control law, be dissolved in the PID control, make P, I, three online self-adjustings of parameter of D, it is more convenient to make that not only temperature control instrument uses, and has improved control accuracy.
Industrial computer 1 can be set the parameter of a plurality of fog rooms respectively, satisfies the requirement that different product is produced.Both steam-cured order can be sent simultaneously, also control command can be sent respectively some fog rooms.When certain steam-cured process finishes, send prompting, remind the staff to get into next procedure.
The production management technical staff is input to required control parameter in the industrial computer by certain format through input password login management interface.Stop the maloperation of all unrelated persons, guarantee the being perfectly safe property of process data.
Action that this auto temperature controlled system is all and step are all in advance through programming; The production process sequencing, data acquisition and control automatization is according to procedure auto-control; Reach unmanned purpose of participating in; And have functions such as data record, data query, storage, report printing, thereby improve temperature accuracy and production efficiency, reduce cost.
Claims (4)
1. steam curing automation temperature control system; Comprise fog room (6), concrete product (9) is positioned at fog room (6), in fog room (6), lays jet chimney (11); It is characterized in that: industrial computer that in the control room, is provided with (1) and control electric cabinet (4); Control installing temperature control instrument in the electric cabinet (4), said temperature control instrument links to each other with industrial computer (1), and; The input of said temperature control instrument connects the temperature sensor (7) of measuring the maintenance indoor temperature and the surface probe (8) of measuring concrete product (9) surface temperature, and the output of temperature control instrument connects electric control valve (5); Said electric control valve (5) is installed on the inlet of jet chimney (11), is used to regulate vapor flow rate;
The surface temperature value of the concrete (9) that fog room (6) temperature value that said temperature sensor (7) is measured in real time and surface probe (8) are measured is sent to the temperature control instrument in the electric cabinet of control (4); Send industrial computer (1) again to; Industrial computer (1) with the temperature process curve ratio of temperature value that receives and setting; The aperture of adjustment electric control valve (5) makes the interior temperature of fog room (6) and the surface temperature of concrete (9) reach setting.
2. steam curing automation temperature control system according to claim 1; It is characterized in that; Said temperature control instrument comprises embedded microprocessor; The input of said embedded microprocessor connects a plurality of temperature transmitters through input interface circuit, and the input of temperature transmitter links to each other with surface probe (8) with the interior temperature sensor (7) of fog room (6) respectively; The output of said embedded microprocessor is connected with electric control valve (5) through power amplifier.
3. steam curing automation temperature control system according to claim 1; It is characterized in that; The adjustment strategy that said industrial computer adopts is that pid algorithm combines with expertise: according to plant characteristic and technological requirement; Design some control laws, utilize " IF ... THEN ... " One one Expert Rules explained in statement, in advance method of adjustment under the rule and adjustment parameter is stored in the industrial computer; Said Expert Rules determines control mode and whether need revise proportionality coefficient K according to the size of current deviation e (n) and rate of change △ e (n) thereof
P, storage gain K
IWith differential gain K
DIn the control procedure, industrial computer need be by System Discrimination result or a certain object function tuning PID parameter, but by current state basic pid parameter is adjusted.
4. steam curing automation temperature control system according to claim 1 is characterized in that said industrial computer (1) can be set the parameter of a plurality of fog rooms (6) respectively, and each fog room (6) is carried out independent control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103754670A CN102366967A (en) | 2011-11-23 | 2011-11-23 | Steam curing automatic temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103754670A CN102366967A (en) | 2011-11-23 | 2011-11-23 | Steam curing automatic temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102366967A true CN102366967A (en) | 2012-03-07 |
Family
ID=45759579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103754670A Pending CN102366967A (en) | 2011-11-23 | 2011-11-23 | Steam curing automatic temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102366967A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699991A (en) * | 2012-06-26 | 2012-10-03 | 江苏建华管桩有限公司 | Automatic control system for steam curing of concrete precast pile |
| CN104526860A (en) * | 2014-12-05 | 2015-04-22 | 中铁二十二局集团有限公司 | Over-ground kiln type steam curing workshop with precast sleeper |
| CN104742234A (en) * | 2013-12-31 | 2015-07-01 | 艾乐迈铁科公司 | Arrangement and method for curing concrete products |
| CN105563629A (en) * | 2015-12-21 | 2016-05-11 | 苏州市东华试验仪器有限公司 | Test block curing box with PID (Proportion Integral and Derivative) control |
| CN105936090A (en) * | 2016-06-17 | 2016-09-14 | 新兴铸管股份有限公司 | Automatic steam curing device and method for cement linings of nodular cast iron pipes |
| CN106338911A (en) * | 2016-08-23 | 2017-01-18 | 北京精密机电控制设备研究所 | Expert PID control method applied to rotary electromechanical actuator servo system |
| CN106363789A (en) * | 2016-10-04 | 2017-02-01 | 李建洲 | Concrete structure curing system and method |
| CN107627447A (en) * | 2017-10-31 | 2018-01-26 | 天津银龙预应力材料股份有限公司 | A kind of track plates steam curing kiln of multi-chamber |
| CN109571734A (en) * | 2019-01-17 | 2019-04-05 | 长江南京航道工程局 | A kind of concrete interlocking block steam curing apparatus |
| CN109624044A (en) * | 2018-12-25 | 2019-04-16 | 中建科技武汉有限公司 | A kind of automatic steaming kiln of prefabricated components |
| CN111993559A (en) * | 2020-08-14 | 2020-11-27 | 肇庆三乐集成房屋制造有限公司 | Calcium silicate board evaporates presses maintenance system |
| CN112157790A (en) * | 2020-09-07 | 2021-01-01 | 中民筑友智能装备科技有限公司 | Maintenance method and maintenance system for long-line bench formwork and computer-readable storage medium |
| CN112248204A (en) * | 2020-09-28 | 2021-01-22 | 北京星航机电装备有限公司 | One-to-multiple fixed die table concrete precast slab maintenance system and maintenance method |
| CN113459265A (en) * | 2021-07-28 | 2021-10-01 | 肥城方兴阳光能源有限公司 | Steam curing system |
| CN116175755A (en) * | 2023-03-09 | 2023-05-30 | 重庆中环建设有限公司 | T roof beam intelligent maintenance system and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604300Y (en) * | 2003-03-14 | 2004-02-25 | 北京城建集团总公司构件厂 | Automatic controlling temperature device for concrete products |
| KR20090078149A (en) * | 2008-01-14 | 2009-07-17 | 양상규 | Automatic system controlling the steam curing and method controlling the steam curing using the same |
| CN201760958U (en) * | 2010-09-07 | 2011-03-16 | 江南大学 | Steam curing temperature-controlled system of reactive powder concrete cover board |
| CN201760959U (en) * | 2010-09-07 | 2011-03-16 | 江南大学 | Automatic temperature-control system for rail plate steam curing |
| CN202018581U (en) * | 2011-03-05 | 2011-10-26 | 中国船舶重工集团公司第七一二研究所 | Self-adaptive digital controller used for large openair mining excavators and combining expert control and PID (proportional integral derivative) closed-loop control |
| CN202399385U (en) * | 2011-11-23 | 2012-08-29 | 江南大学 | Steam curing automatic temperature control system |
-
2011
- 2011-11-23 CN CN2011103754670A patent/CN102366967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604300Y (en) * | 2003-03-14 | 2004-02-25 | 北京城建集团总公司构件厂 | Automatic controlling temperature device for concrete products |
| KR20090078149A (en) * | 2008-01-14 | 2009-07-17 | 양상규 | Automatic system controlling the steam curing and method controlling the steam curing using the same |
| CN201760958U (en) * | 2010-09-07 | 2011-03-16 | 江南大学 | Steam curing temperature-controlled system of reactive powder concrete cover board |
| CN201760959U (en) * | 2010-09-07 | 2011-03-16 | 江南大学 | Automatic temperature-control system for rail plate steam curing |
| CN202018581U (en) * | 2011-03-05 | 2011-10-26 | 中国船舶重工集团公司第七一二研究所 | Self-adaptive digital controller used for large openair mining excavators and combining expert control and PID (proportional integral derivative) closed-loop control |
| CN202399385U (en) * | 2011-11-23 | 2012-08-29 | 江南大学 | Steam curing automatic temperature control system |
Non-Patent Citations (1)
| Title |
|---|
| 张晓军,高美凤: "基于MCGS的轨道板蒸汽养护监护系统", 《科学技术与工程》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699991B (en) * | 2012-06-26 | 2014-08-13 | 江苏建华管桩有限公司 | Automatic control system for steam curing of concrete precast pile |
| CN102699991A (en) * | 2012-06-26 | 2012-10-03 | 江苏建华管桩有限公司 | Automatic control system for steam curing of concrete precast pile |
| RU2671365C2 (en) * | 2013-12-31 | 2018-10-30 | Элематик Ойй | Device and method of curing concrete products |
| CN104742234A (en) * | 2013-12-31 | 2015-07-01 | 艾乐迈铁科公司 | Arrangement and method for curing concrete products |
| EP2899005A3 (en) * | 2013-12-31 | 2015-11-11 | Elematic Oy Ab | Arrangement and method for curing concrete products |
| US10173342B2 (en) | 2013-12-31 | 2019-01-08 | Elematic Oyj | Arrangement and method for curing concrete products |
| CN104526860A (en) * | 2014-12-05 | 2015-04-22 | 中铁二十二局集团有限公司 | Over-ground kiln type steam curing workshop with precast sleeper |
| CN105563629A (en) * | 2015-12-21 | 2016-05-11 | 苏州市东华试验仪器有限公司 | Test block curing box with PID (Proportion Integral and Derivative) control |
| CN105936090A (en) * | 2016-06-17 | 2016-09-14 | 新兴铸管股份有限公司 | Automatic steam curing device and method for cement linings of nodular cast iron pipes |
| CN106338911A (en) * | 2016-08-23 | 2017-01-18 | 北京精密机电控制设备研究所 | Expert PID control method applied to rotary electromechanical actuator servo system |
| CN106338911B (en) * | 2016-08-23 | 2019-06-18 | 北京精密机电控制设备研究所 | A kind of expert PID control method applied to rotary electromechanical actuator servo-system |
| CN106363789A (en) * | 2016-10-04 | 2017-02-01 | 李建洲 | Concrete structure curing system and method |
| CN107627447A (en) * | 2017-10-31 | 2018-01-26 | 天津银龙预应力材料股份有限公司 | A kind of track plates steam curing kiln of multi-chamber |
| CN109624044A (en) * | 2018-12-25 | 2019-04-16 | 中建科技武汉有限公司 | A kind of automatic steaming kiln of prefabricated components |
| CN109571734A (en) * | 2019-01-17 | 2019-04-05 | 长江南京航道工程局 | A kind of concrete interlocking block steam curing apparatus |
| CN111993559A (en) * | 2020-08-14 | 2020-11-27 | 肇庆三乐集成房屋制造有限公司 | Calcium silicate board evaporates presses maintenance system |
| CN112157790A (en) * | 2020-09-07 | 2021-01-01 | 中民筑友智能装备科技有限公司 | Maintenance method and maintenance system for long-line bench formwork and computer-readable storage medium |
| CN112248204A (en) * | 2020-09-28 | 2021-01-22 | 北京星航机电装备有限公司 | One-to-multiple fixed die table concrete precast slab maintenance system and maintenance method |
| CN113459265A (en) * | 2021-07-28 | 2021-10-01 | 肥城方兴阳光能源有限公司 | Steam curing system |
| CN116175755A (en) * | 2023-03-09 | 2023-05-30 | 重庆中环建设有限公司 | T roof beam intelligent maintenance system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102366967A (en) | Steam curing automatic temperature control system | |
| CN202399385U (en) | Steam curing automatic temperature control system | |
| CA2668777C (en) | Optimized mine ventilation system | |
| CN101092059A (en) | Temperature control device of heating system in hot-forming machine for plastic sheet | |
| CN104515271A (en) | Energy conservation optimization control system and method for central air conditioner refrigeration station system | |
| CN201760959U (en) | Automatic temperature-control system for rail plate steam curing | |
| CN201476905U (en) | Neural network PID temperature controlled thermocouple automatic verification system | |
| CN114280927B (en) | Fuzzy neural network PID fireflood intelligent ignition control method | |
| CN205783315U (en) | A kind of central heating temperature automatic adjustment system | |
| CN111102646A (en) | Intelligent climate compensation method and device based on data driving | |
| CN103941769B (en) | A kind of strain fermentation temperature-controlled process | |
| CN109375565A (en) | A kind of TFT glass substrate BOW type on-line checking automatic regulating system and method | |
| CN102508470A (en) | Edible mushroom factory monitoring system | |
| CN114484649A (en) | Constant temperature control system and constant temperature control method | |
| CN201760958U (en) | Steam curing temperature-controlled system of reactive powder concrete cover board | |
| CN204925834U (en) | Novel intelligence control system of firing equipment | |
| CN107417145A (en) | A kind of control method of Cement clinker buring calciner temperature, apparatus and system | |
| CN203825500U (en) | Temperature-control system for strain fermentation | |
| CN106406080B (en) | A kind of long-range optimization system of AGC function and method of thermal power generation unit | |
| CN105483361A (en) | Temperature control method in heat treatment technology | |
| CN101003896A (en) | Distributed control equipment of vacuum inductive chemical vapor deposition / penetration system | |
| CN106227072B (en) | A kind of Intelligence Regulator and its adjusting method | |
| CN105624374B (en) | A kind of air-cushion type quenching system and automatic control system | |
| CN102010124B (en) | Automatic gas flow control device for wire drawing furnace | |
| CN203836339U (en) | Intelligent flow regulating controller of heat supply pipe network system |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120307 |