CN202033658U - Measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster - Google Patents
Measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster Download PDFInfo
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- CN202033658U CN202033658U CN2010206969410U CN201020696941U CN202033658U CN 202033658 U CN202033658 U CN 202033658U CN 2010206969410 U CN2010206969410 U CN 2010206969410U CN 201020696941 U CN201020696941 U CN 201020696941U CN 202033658 U CN202033658 U CN 202033658U
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Abstract
The utility model discloses a measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster, comprising an engine control unit ECU. The wire harness of the engine control unit ECU is connected with a sensor component arranged on an engine and used for acquiring the working condition of the engine, the engine is provided with an execution mechanism composed of an igniting system and an air feed system, the engine control unit ECU has modular line plugging, and controls the action of the actuating mechanism by signals, the engine control unit ECU is connected with a remotely monitoring monitor system, the monitor system is configured with an engine monitor panel, a GPRS emission mechanism, a GPRS receiving mechanism and a monitor platform; the engine monitor panel transmits various working signals collected by the engine control unit ECU to the monitor platform through the GPRS emission mechanism and the GPRS receiving mechanism, and monitors and remotely controls the engine. The system may enable the engine to keep appropriate air-fuel ratio and igniting time, has high control precision, excellent engine dynamic performance, high economy as well as energy saving and emission reduction effect.
Description
Technical field
The utility model relates to the core technology field that utilizes engine control, particularly in conjunction with oil field, coalfield application and development, the comprehensive TT﹠C system of utilizing oil field, coalfield association waste gas to bleed, pump and use, specifically a kind of is oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas.
Background technology
The cbm development utilization is one of important topic of national development cleaning alternative fuel, currently utilizes oil field, coalfield associated gas to carry out oil pumper, air pump is the approach that well realizes in order to the exploitation of gas engine.
Grasp at present that to have with coalfield, associated gas be that the company of engine control system technology of fuel is less, the product of U.S. Woodward company is mainly used in big-block engine; Vehicle fuel engine control system supplier has the potentiality of exploitation similar products as companies few in number such as AEC, Econtrol, but does not have this series products at present.
Oil pumper, air pump at present mainly with electric power as power source, with the work of this dragging motor, the certain applications diesel engine is also arranged as power source, drive oil pumper, air pump work.But the associated gas of using oil field, coalfield self generation is as the engine energy, and the technology that satisfies speed regulating control, telecommunication requirement is seldom used at home, and utilize this technology for example can save a large sum of expense at the mountain area cable laying, save a large amount of electric energy with driven by motor oil pumper, air pump work, can also reduce simultaneously because associated gas enters atmosphere or burns the air pollution that brings, therefore to energy-saving and emission-reduction, to reduce carbon emission significant.
There are a lot of similarities in oil field, coalfield with the core technology and the vehicular engine of associated gas engine, operating mode is simple relatively, but need the integrated application of multiple technologies such as integrated use engine control technology, chemical analysis technology, speed regulating control technology and telecommunication technique, its complexity height does not also have very proven technique at present.How developing this technology, is the problem that the utility model will be studied.
Summary of the invention
Technical problem to be solved in the utility model is at current prior art present situation, providing a kind of is oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it can be with engine operating condition by information acquisition, control and execution, make engine keep suitable air-fuel ratio and time of ignition, and the duty of engine passed through radio communication, be delivered to unified monitor supervision platform, play considerable energy saving and reduce discharging purpose.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of with the oil field, the coalfield associated gas is the oil pumper of power, the air pump TT﹠C system, comprise control unit of engine ECU, its control unit of engine ECU wire harness is connected with and is provided on the engine in order to gather the sensor module of engine operating condition, engine is provided with the topworks that is made up of firing system and air supply system, described control unit of engine ECU modular circuit socket, the action of signal controlling topworks, and control unit of engine ECU is connected with the supervisory system of remote monitoring, and described supervisory system is equipped with the engine monitoring panel, GPRS emission and GPRS receiving mechanism and monitor supervision platform; Described engine monitoring panel is sent to monitor supervision platform with the various working signals of engine that control unit of engine ECU collects by GPRS trigger mechanism, GPRS receiving mechanism, and engine is monitored and Long-distance Control.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned control unit of engine ECU includes equipped mutually shell, control circuit board and connector; Be equipped with control chip and corresponding electronic devices and components on the control circuit board, store system controlling software on the described control chip.
Above-mentioned control unit of engine ECU circuit is connected with accumulator, and control unit of engine ECU is provided with diagnostics interface.
Above-mentioned air supply system comprise that pipeline connects for engine provides associated gas air pipe interface, fuel solenoid valve, decompressor, filtrator, stepper motor and the electronic throttle of fuel, described firing system comprises ignition coil and the spark plug that is connected by minute fiery hi-line.
Above-mentioned stepper motor can match with decompressor, and has connected the mixed uniformly mixer of energy between stepper motor and the electronic throttle.
Above-mentioned sensor module comprises engine speed sensor, suction press temperature sensor, lambda sensor, cooling-water temperature sensor, engine oil pressure pickup, oil temperature sensor; Described sensor induces voltage signal with correspondence and passes to control unit of engine ECU.
Above-mentioned ignition coil is the direct-fire coil, adopts the grouping sparking mode, the shared ignition coil of each cylinder body of described engine, and ignition coil is the plug ignition that is fitted on each cylinder body by hi-line.
Above-mentioned ignition coil adopts the sequentially fired working method of high energy, each cylinder body of described engine all is fitted with ignition coil, ignition coil is that the spark plug that is fitted on each cylinder body is sequentially fired by hi-line, described sensor module increases is furnished with CMPS Camshaft Position Sensor, and CMPS Camshaft Position Sensor is a magnetoelectric sensor.
Above-mentioned speed probe is a magnetoelectric sensor, and the suction press temperature sensor is an integral sensor.
Compared with prior art, the utility model initiative engine control technology and telecommunication technique are merged greatly facilitates the production management of being pumped, bleed in oil field, coalfield.The information that system at first collected control unit of engine ECU is sent to emitter by 485 interfaces, utilization GPRS module, and the job information with engine of success is sent to unified monitor supervision platform, and engine is monitored and Long-distance Control.
Gordian technique that the utility model solved and innovative point are:
1. the parameter that has a continuous value space for air demand etc. adopts and based on the intelligent control technology of artificial neural network and the fuzzy logic control technology after the non-uniform Membership Function Distribution system is optimized, adopt electronic throttle as actuator, the power control system that exploitation is exported based on moment of torsion, the functional reliability and the ride comfort of engine when solving associated gas composition, pressure variation.
For time of ignition carry out based on example reasoning (Case-BasedReasoning, CBR) and the expert control system method be optimized, realize the optimization of time of ignition and ignition energy, to improve ignition energy, improve the thermal efficiency of engine.
3. developed the engine intelligent governing system, according to the frequency control engine operation rotating speed of bleeding, pump that air pump, oil pumper require, assurance air pump, oil pumper frequency of operation are stablized.
4. developed air pump, oil pumper remote measuring and controlling system, engine working conditions utilizes GPRS remote monitoring engine by 485 interfaces, can report to the police automatically and protect when engine breaks down.
Description of drawings
Fig. 1 is a system works principle schematic of the present utility model; Among the figure: 100 engines, 1 control unit of engine ECU, 2 diagnostics interfaces, 3 is supervisory system, 4 accumulators, 5 CMPS Camshaft Position Sensor, 6 lambda sensors, 7 associated gas air pipe interfaces, 8 fuel solenoid valves, 9 decompressors, 10 filtrators, 11 stepper motors, 12 mixers, 13 electronic throttles, 14 fire coils, 15 spark plugs, 16 suction press temperature sensors, 17 cooling-water temperature sensors, 18 engine speed sensors, 19 oil temperature sensor, 20 oil temperature sensor, 21 engine flywheel dishes;
Fig. 2 is one of structural representation of the utility model embodiment;
Fig. 3 be the utility model embodiment structural representation two.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one, of the present utility model a kind of with the oil field, the coalfield associated gas is the oil pumper of power, the air pump TT﹠C system, comprise control unit of engine ECU, it is characterized in that: described control unit of engine ECU wire harness is connected with and is provided on the engine in order to gather the sensor module of engine operating condition, engine is provided with the topworks that is made up of firing system and air supply system, the action of described control unit of engine ECU modular circuit socket signal controlling topworks, and control unit of engine ECU is connected with the supervisory system of remote monitoring, and described supervisory system is equipped with the engine monitoring panel, GPRS emission and GPRS receiving mechanism and monitor supervision platform; Described engine monitoring panel is sent to monitor supervision platform with the various working signals of engine that control unit of engine ECU collects by GPRS trigger mechanism, GPRS receiving mechanism, and engine is monitored and Long-distance Control.Control unit of engine ECU is the core of system, and control unit of engine ECU includes equipped mutually shell, control circuit board and connector; Be equipped with control chip and corresponding electronic devices and components on the control circuit board, store system controlling software on the control chip.Control circuit board adopts 6 layers of PCB design, and the SMD technology links to each other with wire harness by 80 stitch interfaces.All devices all adopt the automotive grade device, and temperature limit is-40～125 ℃.Owing to used the custom circuit that has specific function in a large number, integrated chip, guaranteed that whole ECU compact conformation, dependable performance, antijamming capability are strong, can be by harsh reliability testing, high low temperature, damp and hot, vibrations, salt fog, electromagnetic interference (EMI) and antistatic test all can be passed through smoothly.Among the embodiment, control unit of engine ECU is equipped with accumulator, and control unit of engine ECU is provided with diagnostics interface.
Among the embodiment, what air supply system comprised that pipeline connects provides associated gas air pipe interface, fuel solenoid valve, decompressor, filtrator, stepper motor and the electronic throttle of fuel for engine; Described firing system comprises ignition coil and the spark plug that is connected by the fiery hi-line of branch.Air supply system and firing system are formed topworks, and topworks carries out the instruction of control unit of engine ECU, carries out the control of engine.Wherein step motor valve is used to regulate the flow of combustion gas, the concentration of control combination gas; Firing system is used to control the ignition advance angle and the dwell angle of engine; The supply of fuel shutoff when the fuel solenoid valve is used for engine shutdown, hypervelocity and excessive deceleration guarantees security of operation; Electronic throttle then is used for the control of combination gas total amount, to reach the control rotating speed that needs, because the work makings of engine can change, the working load of engine also will often change, so the rotating speed adaptive control of engine is required very high, also just requires very high to the control of electronic throttle.The utility model stepper motor can match with decompressor, and cooperates between stepper motor and the electronic throttle that be connected to can mixed uniformly mixer.Mixer is a venturi mixer, and specific structure can make mixer regulate the air inlet amount according to the combustion gas air inflow in the venturi mixer, carries out rationally mixing uniformly.
Among the embodiment, sensor module comprises engine speed sensor, suction press temperature sensor, lambda sensor, cooling-water temperature sensor, engine oil pressure pickup, oil temperature sensor; Described sensor induces voltage signal with correspondence and passes to control unit of engine ECU.Sensor module is responsible for the various information of engine are gathered, and is the basis of system works, has only sensor to import working signal accurately, and control system can be controlled accurately to engine.Engine speed sensor of the present utility model adopts magnetoelectric sensor, is installed near the engine flywheel dish, and Flywheel disc is that 60 teeth lack bidentate; The suction press temperature sensor is an integral sensor, is installed in behind the air throttle on the total inlet pipe; Cooling-water temperature sensor is installed in the exit of engine cycles water water channel; Lambda sensor is installed on the gas outlet, and the gentle oil pressure sensor of engine oil is installed on the engine sump tank.
Among the embodiment, supervisory system is to be responsible for duties such as the rotating speed of engine, water temperature, oil temperature, oil pressure, the frequency of bleeding are passed through radio communication, is delivered to unified monitor supervision platform.
Embodiment two, as shown in Figure 2, among the embodiment, identical with embodiment one, what just system adopted is that natural aspiration, ignition coil are the direct-fire coil, adopt the grouping sparking mode, the shared ignition coil of each cylinder body of engine, ignition coil is the plug ignition that is fitted on each cylinder body by hi-line.Its system configuration is the simplest, and cost is minimum.Among the embodiment, the special-purpose air inlet pipeline of association pipeline gas air pipe interface or other gas storage equipment, fuel solenoid valve, decompressor, filtrator, stepper motor, mixer and electronic throttle and gas burning system etc. is formed air supply system.Solenoid valve is opened during engine start, fuel is by its decompressor of flowing through, the pressure process decompression that decompressor provides the association pipeline gas, for the air feed stepper motor provides the pressure about atmospheric pressure, the aperture of control unit of engine ECU control step motor valve, guarantee that an amount of fuel is supplied to mixer, mixer is a venturi mixer, specific structure can make mixer regulate the air inlet amount according to the combustion gas air inflow in the venturi mixer, carry out rationally mixing uniformly, mixed combination gas enters electronic throttle, enters among the inlet manifold of engine again, finishes air inlet.
Control unit of engine ECU is the core of The whole control system, the various working conditions of engine will at first be delivered among the control unit of engine ECU by sensor, control unit of engine ECU judges according to relevant procedures of storing in its chip and data, and assign execution command for various topworkies and supervisory system, finish corresponding action by actuator and supervisory system.
Among the embodiment, engine speed sensor is a magnetoelectric tachometric transducer, this sensor input speed of crankshaft signal, be installed near the engine flywheel dish, Flywheel disc is that 60 teeth lack bidentate, drive Flywheel disc and rotate when engine rotation, speed probe induces change in voltage and passes to control unit of engine ECU.
Among the embodiment, the suction press temperature is an integral sensor, be installed in behind the air throttle on the total inlet pipe, directly respond to the variation of atmospheric pressure and atmospheric temperature in the draft tube, control unit of engine ECU is passed in the variation that respectively variation of atmospheric pressure and atmospheric temperature is converted into voltage.
Among the embodiment, cooling-water temperature sensor is installed in the exit of engine cycles water water channel, and the temperature of induction recirculated water is converted into corresponding resistance value and passes to control unit of engine ECU.
Among the embodiment, ignition coil is the packet type ignition coil, and engine has four cylinders, the shared ignition coil of four cylinders, and high-head directly connects the spark plug of each cylinder by hi-line, and control unit of engine ECU controls its duration of charging and ignition angle.
Among the embodiment, lambda sensor is installed on the gas outlet, and lambda sensor can be used for the residual oxygen concentration of detection of engine exhaust, momentary status air-fuel ratio and the chemically correct fuel of judging engine compare " dense " or " rare ".ECU sends the instruction of " increasing " or " subtracting " according to the signal of lambda sensor to stepper motor, is the duty that engine keeps chemically correct fuel.Form the closed-loop control of air feed.
Among the embodiment, electronic throttle is installed on the motor intake manifold house steward.The principle of work of electronic throttle is as follows: the actual speed of engine is experienced by the magnetoelectric tachometric transducer that is contained in flywheel ring gear top, and it is output as the electric signal that frequency and voltage are directly proportional with engine speed.ECU carries out filtering and calculating to it, and compare the back with given rotating speed and form the rotating speed departure, the rotating speed departure draws best throttle position after being regulated by the speed regulator pid correction, and then driving electronic throttle, throttle position sensor is then given throttle valve control unit the aperture signal feedback of air throttle, forms the position control of closed loop.
Among the embodiment, supervisory system comprises engine monitoring panel, GPRS emission and accepts mechanism and monitor supervision platform etc., the engine monitoring panel is by CAN and ECU communication, collect the various working signals of engine, be sent to the GPRS trigger mechanism by 485 interfaces, the GPRS receiving mechanism is sent to monitor supervision platform after receiving.
System work process is as follows: electronic control unit is accepted the information of sensors such as ignition key switch, rotating speed, pressure, after shaping, analysis, computing, tabling look-up, control air feed stepper motor, ignition coil etc. are worked on request, make engine operation in optimum condition.Be specially: when ignition switch was opened, the air feed stepper motor resetted and waits for startup, and electromagnetic valve of gas circuit is opened, if the fuel solenoid valve is just closed in 3 not work of intrinsic motivation in second.When engine starts, and electromagnetic valve of gas circuit is just opened at any time, and control unit of engine ECU is by start-up mode control fuel solenoid valve, ignition coil work; Just accurately control air inlet stepper motor and ignition coil work after starting successfully according to engine speed, admission pressure and throttle position.When combination gas was dense partially or rare partially, lambda sensor passed to control unit of engine ECU with this information, and control unit of engine ECU controls the air feed stepper motor more suitably to be increased or reduce air demand and make air-fuel ratio near perfect condition.Control unit of engine ECU also controls electronic throttle, air feed stepper motor and ignition coil according to water temperature and temperature information during startup, carries out cold start mode or warm start pattern.Present embodiment is identical with embodiment one, and just its sparking mode is the grouping igniting.
Embodiment three, as Fig. 1, shown in Figure 3, among the embodiment, ignition coil adopts the sequentially fired working method of high energy, each cylinder body of engine all is fitted with ignition coil, ignition coil is that the spark plug that is fitted on each cylinder body is sequentially fired by hi-line, and described sensor module increases is furnished with CMPS Camshaft Position Sensor, and CMPS Camshaft Position Sensor is a magnetoelectric sensor.This mode system configuration is more complicated a little than the grouping igniting, but the control accuracy height, engine power performance, economy and discharging obviously improve.
The implementation case and embodiment two basically identical on control mode, but there are differences in the following areas:
1, CMPS Camshaft Position Sensor is installed near the camshaft signal fluted disc, what adopt is magnetoelectric sensor, the function of CMPS Camshaft Position Sensor is to gather the position signalling of engine cam, and input ECU, so that ECU calculation engine rotating speed is also discerned a cylinder compression top center, thereby the control engine is sequentially fired.Embodiment one does not need this sensor owing to adopt the grouping igniting.
2, ignition coil is independently lighted a fire, and every cylinder all has one group of independently ignition coil, by the number of turn and the low-voltage circuit resistance of suitable minimizing ignition coil low pressure winding, increases the cut off value of primary current, thereby improves ignition voltage, increases ignition energy.Control unit of engine ECU is by the judgement of engine speed/TDCS TDC Sensor and CMPS Camshaft Position Sensor, discern the cylinder that needs work, and according to engine operation condition, calculate each best cylinder time of ignition, and can revise by different operating modes, therefore, can make engine under any operating mode, all can provide optimum igniting constantly and guarantee the ON time of primary coil, with realization order high-energy ignition.Adopt the automatically controlled sequentially fired generation that can effectively avoid tempering phenomenon, also beneficial to the maintenance cost that improves ignition energy and system.
During the utility model system works, the speed regulating control technology of engine that system uses is not have demand in the traditional vehicular engine control system, this product in application process, need according to associated gas in the oil gas field how much carry out the setting of sprinting tempo, and sprinting tempo is to be controlled by the rotating speed of engine and the speed ratio of variator.The sprinting tempo of accurate control air pump is most important to the efficient and the safety in utilization of air pump, and the utility model controls the rotating speed of engine by exploitation can be precisely controlled.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (9)
1. one kind with the oil field, the coalfield associated gas is the oil pumper of power, the air pump TT﹠C system, comprise control unit of engine ECU, it is characterized in that: described control unit of engine ECU wire harness is connected with and is provided on the engine in order to gather the sensor module of engine operating condition, engine is provided with the topworks that is made up of firing system and air supply system, described control unit of engine ECU modular circuit socket signal controlling topworks, and control unit of engine ECU is connected with the supervisory system of remote monitoring, and described supervisory system is equipped with the engine monitoring panel, GPRS emission and GPRS receiving mechanism and monitor supervision platform; Described engine monitoring panel is sent to monitor supervision platform with the various working signals of engine that control unit of engine ECU collects by GPRS trigger mechanism, GPRS receiving mechanism, and engine is monitored and Long-distance Control.
2. according to claim 1 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described control unit of engine ECU includes mutually equipped shell, control circuit board and connector; Be equipped with control chip and corresponding electronic devices and components on the control circuit board, store system controlling software on the described control chip.
3. according to claim 2 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described control unit of engine ECU circuit is connected with accumulator, and control unit of engine ECU is provided with diagnostics interface.
4. according to claim 3 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described air supply system comprise that pipeline connects for engine provides associated gas air pipe interface, fuel solenoid valve, decompressor, filtrator, stepper motor and the electronic throttle of fuel, described firing system comprises ignition coil and the spark plug that is connected by minute fiery hi-line.
5. according to claim 4 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described stepper motor can match with decompressor, and has connected the mixed uniformly mixer of energy between stepper motor and the electronic throttle.
6. according to claim 5 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described sensor module comprises engine speed sensor, suction press temperature sensor, lambda sensor, cooling-water temperature sensor, engine oil pressure pickup, oil temperature sensor; Described sensor induces voltage signal with correspondence and passes to control unit of engine ECU.
7. according to claim 6 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described ignition coil is the direct-fire coil, adopt the grouping sparking mode, the shared ignition coil of each cylinder body of described engine, ignition coil is the plug ignition that is fitted on each cylinder body by hi-line.
8. according to claim 6 a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described ignition coil adopts the sequentially fired working method of high energy, each cylinder body of described engine all is fitted with ignition coil, ignition coil is that the spark plug that is fitted on each cylinder body is sequentially fired by hi-line, described sensor module increases is furnished with CMPS Camshaft Position Sensor, and CMPS Camshaft Position Sensor is a magnetoelectric sensor.
According to claim 7 or 8 arbitrary claims described a kind of be oil pumper, the air pump TT﹠C system of power with oil field, coalfield associated gas, it is characterized in that: described speed probe is a magnetoelectric sensor, and the suction press temperature sensor is an integral sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206969410U CN202033658U (en) | 2010-12-24 | 2010-12-24 | Measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206969410U CN202033658U (en) | 2010-12-24 | 2010-12-24 | Measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster |
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| CN202033658U true CN202033658U (en) | 2011-11-09 |
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| CN2010206969410U Expired - Lifetime CN202033658U (en) | 2010-12-24 | 2010-12-24 | Measurement and control system using oil field and coalfield associated gas as power and used for oil pumping unit and air exhauster |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536184A (en) * | 2012-01-17 | 2012-07-04 | 中国石油大学(华东) | Method for exploiting coal-bed gas of burned coal bed |
| CN105226613A (en) * | 2015-10-23 | 2016-01-06 | 河南柴油机重工有限责任公司 | A kind of refuse landfill gas generating set supervisory control system and method |
| CN105257414A (en) * | 2015-10-23 | 2016-01-20 | 河南柴油机重工有限责任公司 | Waste landfill gas engine control device and method |
| CN109857395A (en) * | 2019-01-10 | 2019-06-07 | 湖南科技大学 | The integrated application method of smart camshaft grinding process software database system based on digital control system in open type |
-
2010
- 2010-12-24 CN CN2010206969410U patent/CN202033658U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536184A (en) * | 2012-01-17 | 2012-07-04 | 中国石油大学(华东) | Method for exploiting coal-bed gas of burned coal bed |
| CN105226613A (en) * | 2015-10-23 | 2016-01-06 | 河南柴油机重工有限责任公司 | A kind of refuse landfill gas generating set supervisory control system and method |
| CN105257414A (en) * | 2015-10-23 | 2016-01-20 | 河南柴油机重工有限责任公司 | Waste landfill gas engine control device and method |
| CN109857395A (en) * | 2019-01-10 | 2019-06-07 | 湖南科技大学 | The integrated application method of smart camshaft grinding process software database system based on digital control system in open type |
| CN109857395B (en) * | 2019-01-10 | 2022-09-09 | 湖南科技大学 | Integrated application method of intelligent camshaft grinding process software database system based on open numerical control system |
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Owner name: ZHEJIANG NIU'EN JIERUI POWER CO., LTD. Free format text: FORMER OWNER: NINGBO KINGBAND AUTOMOBILE ELECTRONIC CO., LTD. Effective date: 20120626 |
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Free format text: CORRECT: ADDRESS; FROM: 315040 NINGBO, ZHEJIANG PROVINCE TO: 315800 NINGBO, ZHEJIANG PROVINCE |
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Effective date of registration: 20120626 Address after: 315800 Ningbo Beilun District Meishan saltern office building No. 1 room 706 No. 7 Patentee after: Zhejiang Niu'en Jierui Power Co., Ltd. Address before: 315040, 1 building, 2 Lingyun Industrial Park, Lingyun Road, 1177, Lingyun Road, Ningbo, Zhejiang Patentee before: Ningbo Kingband Automobile Electronic Co., Ltd. |
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Effective date of registration: 20170116 Address after: Qingyang District of Chengdu City, 610014 street trees in Sichuan province No. 19 No. 1 of 1 layers Patentee after: Sichuan Ningbo Dynamic Energy Investment Co. Ltd. Address before: Ningbo Beilun District Meishan saltern office building No. 1 room 706 No. 7 Patentee before: Zhejiang Niu'en Jierui Power Co., Ltd. |
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