CN103629414A - Intelligent flow regulating controller for heat supply pipe network system and regulating and controlling method thereof - Google Patents
Intelligent flow regulating controller for heat supply pipe network system and regulating and controlling method thereof Download PDFInfo
- Publication number
- CN103629414A CN103629414A CN201310705430.9A CN201310705430A CN103629414A CN 103629414 A CN103629414 A CN 103629414A CN 201310705430 A CN201310705430 A CN 201310705430A CN 103629414 A CN103629414 A CN 103629414A
- Authority
- CN
- China
- Prior art keywords
- interface
- controller
- control
- flow
- pipeline
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Flow Control (AREA)
Abstract
The invention relates to an intelligent pipeline flow regulating controller and a regulating and a controlling method thereof. The intelligent pipeline flow regulating controller comprises a controller CPU (Central Processing Unit) (1), an RS232 interface (2), an RS485 interface (3), a DS18B20 sensor interface (4), a 16-path AD interface (5), a 4-20mA output interface (6), a keyboard (7), an LCD (Liquid Crystal Display) (8), a GPRS (General Packet Radio Service) network interface (9), a power supply switch (10), a voltage stabilizing chip (11), a pressure difference transducer (12), a temperature transducer (13) and an electric control valve (14). The controller can flexibly use a 9-16V direct-current power supply to supply power, collects a signal of pipeline engineering quantity through the 16-path AD interface (6), combines the keyboard (operation) to set a control parameter, controls the 4-20mA output interface (6) to output a control signal, and drives the pipeline electric control valve. The controller adopts a PID regulating and controlling method to realize full-automatic flow control and can be connected with internet through the GPRS network interface (9) to realize remote monitoring and controlling. All operations can be synchronously displayed on the LCD (8). The RS232 interface (2), the RS485 interface (3) and the DS18B20 sensor interface (4) facilitates peripheral expansion of the controller. Compared with the traditional pipeline flow regulation, the intelligent pipeline flow regulating controller has high intelligence and can precisely control the flow of a pipeline.
Description
Technical field
The present invention relates to a kind of intelligent controller and controlling method thereof regulating for heating system pipeline flow, for heating system pipe network full-automatic water equilibrium of forces, regulate.
Background technique
In heating system, hydraulic equilibrium regulates and is absolutely necessary, and it is by the hydraulic balance adjusting valve on adjusting pipeline, to realize the adjusting of pipeline flow that hydraulic equilibrium regulates essence.Hydraulic balance adjusting valve is divided into manual modulation valve and electric control valve, and manual modulation valve needs workman to use spanner to regulate, and electric control valve uses 4-20mA current signal to control.Electric control valve is with respect to manual modulation valve, advantage can make electricity consumption regulate exactly, workman is when using electric control valve to regulate pipeline Flow-rate adjustment, because aperture and the pipeline flow of electric control valve is not linear relationship, this just needs workman constantly to change valve opening value, until pipeline flow value equals or close to setting flow value, this mode wastes time and energy, and needs workman to debug at the scene.Hydraulic balance adjusting valve is generally arranged on the consumer heat inlet place of Lou Dong, and its space is comparatively narrow and small, and workman is when regulating, very inconvenient.Hydraulically balanced adjusting is the water supply loop Flow-rate adjustment for a heating system, a plurality of modulating valve are distributing in a heating system loop, while regulating one of them valve, can cause the changes in flow rate in other loops, so during field adjustable, need a plurality of workmans, debug, so just greatly improved human cost.So traditional hydraulic equilibrium regulates, not only consumption wastes time and energy, and control accuracy is low, thus need a kind of controller badly, can be according to setting flow value, the moving modulating valve action of automatic control electric, to regulate pipeline flow, controller has remote control function simultaneously, and on whole system loop, all controllers are connected on upper-position unit by Internet like this, by the unified debugging of professional workforce, can greatly promote working efficiency and control accuracy.
Summary of the invention
In order to overcome the defect of above-mentioned traditional background technique, the object of this invention is to provide a kind of heating network system intelligence Flow-rate adjustment controller and regulate and control method thereof.
To achieve these goals, the technological scheme of patent of the present invention:
Pipeline flow intelligence adjusting color controls comprises for realizing the controller CPU of s operation control; Interface for detection of digital temperature sensor DS18B20; For detection of pipeline field sensor 16 road AD interface; For controlling the 4-20mA output interface of pipeline valve opening; For the keyboard of controlling parameter is set; For showing that in real time the LCD of operation information shows; For connecting the GPRS network interface of Internet network; For RS233 and the RS485 interface of directly communicating by letter with upper-position unit or lower-position unit, and the standard of support Modbus communication protocol; Power switch for switch power; Voltage stabilizing chip for multiregion power supply voltage.
Pipeline flow intelligence adjusting color controls is realized pipeline flow adjusting three kinds of modes, is respectively manual mode, automatic mode, distance control mode, and the control principle of three kinds of control modes is as follows:
Pipeline flow intelligence adjusting color controls manual mode principle: by specific keyboard, enter into manual mode, by keyboard to set up valve types and flow target value, controller CPU is by valve opening-flow curve corresponding to valve types of selecting, calculate valve opening desired value, controller CPU is by valve opening-control current signal curve corresponding to valve types of selecting, calculate control current signal desired value corresponding to valve opening desired value, controller CPU drives 4-20mA output interface output control signal, control valve moves to target aperture, realizing pipeline flow controls.
Pipeline flow intelligence adjusting color controls automatic mode principle: the sensor signal that detects pipeline field by 16 road AD interfaces, be specially pressure of supply water and the pressure of return water signal of pipeline, by keyboard, enter into automatic mode, arrange and select valve types used, pid control algorithm parameter, flow target value.Controller CPU passes through pressure of supply water, the difference of pressure of return water and valve aperture, according to flow rate calculation formula, calculate pipeline present flow rate value, controller CPU is according to pid control algorithm, calculate valve opening desired value, controller CPU is by valve opening-control current signal curve corresponding to valve types of selecting, calculate control current signal desired value corresponding to valve opening desired value, controller CPU drives 4-20mA output interface output control signal, control valve moves to valve opening desired value, controller CPU is present flow rate value and setting flow value relatively, if margin of error is in setting range, stop regulating, otherwise continue to regulate pipeline valve, until current pipeline flow value meets with the error of setting pipeline flow value the margin of error of setting.
Pipeline flow intelligence adjusting color controls distance control mode principle: enter into distance control mode by key operation, pipeline flow intelligent controller is connected to Internet network by GPRS network interface, realizes communicating by letter of long-range upper-position unit and controller.Controller is delivered to long-range upper-position unit by signal, valve aperture, setup parameter values such as the pipeline pressure collecting, temperature and shows, by long-range upper-position unit, send and set flow value, controller is set flow value according to this, realizes the adjusting of pipeline flow with automatic control mode.
Pipeline flow intelligence adjusting color controls regulate and control method:
1) according to the specific aperture-flow of electric control valve kv special parameter, input in controller, according to the actual pressure gathering, calculate flow corresponding under this aperture-pressure reduction, formula is as follows:
Corresponding flow Qv under the different pressure reduction of different opening
In formula, the flow under Kv-100kpa, m
3/ h;
Actual pressure differential before and after Δ P-valve, kpa;
Δ P
0pressure reduction=100kpa before and after-valve;
ρ
0the density of water under-mark condition, kg/m
3;
The density of water under ρ-actual conditions, kg/m
3.
2) actual flow calculating is contrasted with setting flow value, according to pid control algorithm, regulating and controlling motorized adjustment valve opening, realizes the adjusting to flow, and control procedure is with reference to shown in accompanying drawing 2.
Accompanying drawing explanation
Fig. 1 is adjusting color controls constitutional diagram;
Fig. 2 is controller regulate and control method flow chart.
Embodiment
Intelligent flow adjusting color controls, comprise controller CPU (1), RS232 interface (2), RS485 interface (3), DS18B20 sensor interface (4), 16 road AD interfaces (5), 4-20mA output interface (6), keyboard (7), LCD shows (8), GPRS network interface (9), power switch (10), voltage stabilizing chip (11), by on the DC electrical source of 6-16V scope and power switch (10), by the pressure of supply water sensor on on-the-spot pipeline, pressure of return water sensor, pipeline valve feedback signal is linked on 16 road AD interfaces, by wire, 4-20mA output interface is connected with pipeline valve control interface, by wire, the DS18B20 temperature transducer of pipeline field is linked into controller DS18B20 sensor interface.
Press power switch (10), enter into display frame, LCD shows (8) welcome screen, press KEY_UP button and KEY_RIGHT button on lower keyboard (7) simultaneously, enter into control mode and select picture, by KEY_UP button or KEY_DOWN button, control mode is selected in circulation, select after control mode, pressing KEY-RIGHT button enters into corresponding preference pattern picture is set, then by KEY_UP or KEY_DOWN button, select parameters type, after parameters type selecting is determined, by KEY_RIGHT button and KEY_LEFT button, the parameters of selecting is arranged, after parameter setting completes, KEY_UP button and KEY_LEFT button push button simultaneously, jump to upper level picture, parameter arranges and can automatically preserve.
Claims (10)
1. a heating network system intelligence Flow-rate adjustment controller and regulate and control method thereof, it is characterized in that controller shows (8), GPRS network interface (9), power switch (10) by controller CPU (1), RS232 interface (2), RS485 interface (3), DS18B20 sensor interface (4) ,16 road AD interface (5), 4-20mA output interface (6), keyboard (7), LCD, voltage stabilizing chip (11), differential pressure pickup (12), temperature transducer (13), electric control valve (14) forms.By special regulate and control method, the flow of heating network system is carried out to intelligent control.
2. intelligent flow adjusting color controls according to claim 1, is characterized in that, owing to having adopted voltage stabilizing chip (11), making controller can use flexibly Power supply within the scope of 9-16V.
3. intelligent flow adjusting color controls according to claim 1, it is characterized in that having RS232 interface (2), RS485 interface (3), there is the computer of RS232 interface or RS485 interface or controller with other and be connected while communicating, support standard Modbus communication protocol.
4. intelligent flow adjusting color controls according to claim 1, it is characterized in that having DS18B20 sensor interface (4), can connect 2 DS18B20 sensor interfaces, and controller can automatically be identified and read each DS18B20 sensor ID and measure numerical value simultaneously.
5. intelligent flow adjusting color controls according to claim 1, it is characterized in that thering is keyboard (7), keyboard is comprised of 5 buttons, be respectively RESET button, KEY_UP button, KEY_DOWN button, KEY_LEFT button, KEY_RIGHT button, designed independent button and combination button set-up mode.
6. intelligent flow adjusting color controls according to claim 1, it is characterized in that having 16 road AD interfaces (5), circle collection 16 road 4-20mA standard current signals simultaneously, in conjunction with keyboard, current signal is set to the conversion of engineering work load signal, can shows at LCD engineering work load corresponding to demonstration real-time in (8) 16 road collection signal.
7. intelligent flow adjusting color controls according to claim 1, it is characterized in that gathering pipeline electric control valve front and back pressure parameter by 16 road AD interfaces (5), adopt specific pressure reduction-flow control algorithm, in conjunction with keyboard (7), operate, control algorithm is set, by 4-20mA output interface (6), control the action of pipeline modulating valve, realize flow automatic regulation.
8. intelligent flow adjusting color controls according to claim 1, is characterized in that by GPRS network interface (9), in conjunction with keyboard (7), arranges and connects Internet network parameter, realizes remote monitoring and controller is set.
9. intelligent flow adjusting color controls according to claim 1, it is characterized in that controller has 3 kinds of control modes, be respectively manual control mode, automatic control mode, distance control mode, different control modes, is selected and is arranged by specific key combination.
10. regulate and control method according to claim 1, it is characterized in that controller passes through the actual pressure differential signal that differential pressure pickup (12) gathers, the aperture signal of electric control valve (14) feedback, according to the specific aperture-flow KV special parameter of electric control valve (14), calculate the flow that this aperture-pressure reduction is corresponding, use pid control algorithm to realize the flow control to heating network system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705430.9A CN103629414B (en) | 2013-12-20 | 2013-12-20 | A kind of heating network system intelligent flow adjusting controller and its regulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705430.9A CN103629414B (en) | 2013-12-20 | 2013-12-20 | A kind of heating network system intelligent flow adjusting controller and its regulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629414A true CN103629414A (en) | 2014-03-12 |
| CN103629414B CN103629414B (en) | 2019-01-08 |
Family
ID=50210746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310705430.9A Active CN103629414B (en) | 2013-12-20 | 2013-12-20 | A kind of heating network system intelligent flow adjusting controller and its regulation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629414B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066656A (en) * | 2016-08-16 | 2016-11-02 | 河南柴油机重工有限责任公司 | The temperature control set for adjusting of a kind of heat exchange station automatic control system and method |
| CN106123110A (en) * | 2016-08-16 | 2016-11-16 | 河南柴油机重工有限责任公司 | A kind of heat exchange station automatic control system and method |
| RU2679472C1 (en) * | 2017-11-15 | 2019-02-11 | Общество с ограниченной ответственностью "Точный Тепло Учет" | Method of measuring difference liquid and gaseous media flow rate and device for implementation thereof (options) |
| CN110260389A (en) * | 2019-05-17 | 2019-09-20 | 山东盛和振远实业有限公司 | A kind of overhead type ground heating system |
| CN110308748A (en) * | 2019-06-17 | 2019-10-08 | 常州大学 | A kind of Intelligent controller for valve and control method based on STM32 |
| CN111720875A (en) * | 2019-10-28 | 2020-09-29 | 北京德利恒科技发展有限公司 | Experimental device for hydraulic balance adjustment and data application based on centralized heat supply pipe network |
| CN112728192A (en) * | 2021-01-04 | 2021-04-30 | 上海一诺仪表有限公司 | Valve control method, control device, control equipment and computer equipment |
| CN113572264A (en) * | 2021-07-26 | 2021-10-29 | 济南迈克阀门科技有限公司 | Pipe network system intelligent controller with power supply and remote regulation and control function |
| CN113805477A (en) * | 2020-06-12 | 2021-12-17 | 中国石油天然气股份有限公司 | PID (proportion integration differentiation) setting method and device for oil and gas pipeline pressure regulating equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520502A (en) * | 2001-05-03 | 2004-08-11 | ����˹���ֵ¸��� | Method and arrangement for cntrolling temp of outstream flow from heat exchanger and measuring produced heat |
| US20060071800A1 (en) * | 2004-09-30 | 2006-04-06 | Schultz Paul C | Condition assessment system and method |
| CN101055466A (en) * | 2007-03-23 | 2007-10-17 | 沈新荣 | Balance control and throttling integrative valve control method and valve device |
| CN201310667Y (en) * | 2008-12-09 | 2009-09-16 | 杭州展德软件技术有限公司 | Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control |
| CN201955688U (en) * | 2011-01-26 | 2011-08-31 | 上海汇纳智能控制科技有限公司 | Temperature controller |
| CN202349298U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Intelligent dynamic differential pressure balanced valve integrating energy perceptive function |
| CN202349310U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Integral throttling and controlling intelligent valve integrated with energy sensing function |
| CN103277900A (en) * | 2013-06-24 | 2013-09-04 | 江苏天舒电器有限公司 | Programmable logic controller (PLC) based monitor and control generated system (MCGS) heat pump monitoring system and control method thereof |
-
2013
- 2013-12-20 CN CN201310705430.9A patent/CN103629414B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520502A (en) * | 2001-05-03 | 2004-08-11 | ����˹���ֵ¸��� | Method and arrangement for cntrolling temp of outstream flow from heat exchanger and measuring produced heat |
| US20060071800A1 (en) * | 2004-09-30 | 2006-04-06 | Schultz Paul C | Condition assessment system and method |
| CN101055466A (en) * | 2007-03-23 | 2007-10-17 | 沈新荣 | Balance control and throttling integrative valve control method and valve device |
| CN201310667Y (en) * | 2008-12-09 | 2009-09-16 | 杭州展德软件技术有限公司 | Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control |
| CN201955688U (en) * | 2011-01-26 | 2011-08-31 | 上海汇纳智能控制科技有限公司 | Temperature controller |
| CN202349298U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Intelligent dynamic differential pressure balanced valve integrating energy perceptive function |
| CN202349310U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Integral throttling and controlling intelligent valve integrated with energy sensing function |
| CN103277900A (en) * | 2013-06-24 | 2013-09-04 | 江苏天舒电器有限公司 | Programmable logic controller (PLC) based monitor and control generated system (MCGS) heat pump monitoring system and control method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066656A (en) * | 2016-08-16 | 2016-11-02 | 河南柴油机重工有限责任公司 | The temperature control set for adjusting of a kind of heat exchange station automatic control system and method |
| CN106123110A (en) * | 2016-08-16 | 2016-11-16 | 河南柴油机重工有限责任公司 | A kind of heat exchange station automatic control system and method |
| RU2679472C1 (en) * | 2017-11-15 | 2019-02-11 | Общество с ограниченной ответственностью "Точный Тепло Учет" | Method of measuring difference liquid and gaseous media flow rate and device for implementation thereof (options) |
| CN110260389A (en) * | 2019-05-17 | 2019-09-20 | 山东盛和振远实业有限公司 | A kind of overhead type ground heating system |
| CN110260389B (en) * | 2019-05-17 | 2021-08-13 | 北京太伟宜居装饰工程有限公司 | Overhead floor heating system |
| CN110308748A (en) * | 2019-06-17 | 2019-10-08 | 常州大学 | A kind of Intelligent controller for valve and control method based on STM32 |
| CN111720875A (en) * | 2019-10-28 | 2020-09-29 | 北京德利恒科技发展有限公司 | Experimental device for hydraulic balance adjustment and data application based on centralized heat supply pipe network |
| CN113805477A (en) * | 2020-06-12 | 2021-12-17 | 中国石油天然气股份有限公司 | PID (proportion integration differentiation) setting method and device for oil and gas pipeline pressure regulating equipment |
| CN113805477B (en) * | 2020-06-12 | 2024-05-28 | 中国石油天然气股份有限公司 | PID setting method and device for oil and gas pipeline pressure regulating equipment |
| CN112728192A (en) * | 2021-01-04 | 2021-04-30 | 上海一诺仪表有限公司 | Valve control method, control device, control equipment and computer equipment |
| CN113572264A (en) * | 2021-07-26 | 2021-10-29 | 济南迈克阀门科技有限公司 | Pipe network system intelligent controller with power supply and remote regulation and control function |
| CN113572264B (en) * | 2021-07-26 | 2024-02-27 | 济南迈克阀门科技有限公司 | Intelligent controller of pipe network system with power supply and remote regulation and control functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103629414B (en) | 2019-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629414A (en) | Intelligent flow regulating controller for heat supply pipe network system and regulating and controlling method thereof | |
| CN102033079B (en) | Instrument for testing stratum in-situ thermal property of ground source heat pump and heat exchange quantity of buried pipe | |
| CN103345230B (en) | Response apparatus and the response method of pluggable control module is possessed based on demand response | |
| CN103486655B (en) | A kind of HVAC system water dynamic balance debugging apparatus and adjustment method thereof | |
| CN213867099U (en) | Automatic temperature control system | |
| CN101301596B (en) | Power regulation and control system of cubic hydraulic press made of superhard material and control method thereof | |
| CN203836339U (en) | Intelligent flow regulating controller of heat supply pipe network system | |
| CN106152250A (en) | Blood circulation that a kind of heat exchange station automatically controls and circulation controlling means | |
| CN102759145B (en) | Heating system flow balance regulating method and flow balance regulating system | |
| CN202757200U (en) | Flux balance adjusting system of heating system | |
| CN103742706A (en) | Electric heating type flow intelligent adjusting valve and control method thereof | |
| CN102829554A (en) | Tea making machine and self-adjusting control method for power of water pump thereof | |
| CN204925834U (en) | Novel intelligence control system of firing equipment | |
| CN204269258U (en) | Intelligent thermocouple tester | |
| CN106935088B (en) | The simulator and its control method of portable process industrial object | |
| CN104864482A (en) | Energy-saving metering and controlling device for building heat supply | |
| CN201885985U (en) | Tester for in-situ formation thermal property and ground pipe transferred heat of ground source heat pump | |
| CN203299626U (en) | Intelligent combined-type hydrogen-adding automatic matching device | |
| CN203605321U (en) | Constant-temperature water supply device and heating equipment | |
| CN205783552U (en) | Central air-conditioning cold and heat source system energy-saving control device | |
| CN205485683U (en) | Temperature control system based on singlechip | |
| CN204705847U (en) | Two-in-one intelligent tap control circuit | |
| CN201021985Y (en) | Electrical accompanied thermal line temperature control system | |
| CN210846729U (en) | Coal pulverizer outlet temperature control device | |
| CN203982129U (en) | The on-the-spot many specifications acquisition controller of a kind of heat supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100021 6th Floor, Building 18, Huawei North Lane, Chaoyang District, Beijing Patentee after: Jinfang Energy Group Co.,Ltd. Address before: 100021 6th Floor, Building 18, Huawei North Lane, Chaoyang District, Beijing Patentee before: BEIJING KINGFORE HVAC ENERGY SAVING TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |