摘要：【中文】本发明涉及一种三相缺相检测仪，包括采样电路、电源供电电路、显示电路和单片机；所述采样电路设置三个数据采集线，分别与三根相线连接，采样电路由15V/5V电源供电电路供电，电源供电电路同时为单片机和显示电路提供工作电源，电源供电电路与外部电源连接；所述采样电路包括顺序连接的电压信号采集线路、信号比较输出电路、电流信号放大电路、充放电回路，控制信号比较输出电路，该发明既能提高电机产品检验效率，也能提高产品质量。 【EN】The invention relates to a three-phase open-phase detector, which comprises a sampling circuit, a power supply circuit, a display circuit and a single chip microcomputer; the sampling circuit is provided with three data acquisition lines which are respectively connected with three phase lines, the sampling circuit is powered by a 15V/5V power supply circuit, the power supply circuit simultaneously provides working power for the singlechip and the display circuit, and the power supply circuit is connected with an external power supply; the sampling circuit comprises a voltage signal acquisition circuit, a signal comparison output circuit, a current signal amplification circuit, a charge-discharge circuit and a control signal comparison output circuit which are sequentially connected.

摘要：【中文】本发明涉及一种油电混合发动机转速采样电路，包括单片机、电阻R12、R9，二极管D3、DB3，继电器K2，电阻R6，光电耦合器U2，电阻R8，电阻R7，电阻R10，电容C2、C4，本发明能够解决电机的转速采集问题，数据采集更精确，能够提高电机的工作效率，达到省油省电的效果。 【EN】The invention relates to a rotation speed sampling circuit of an oil-electricity hybrid engine, which comprises a single chip microcomputer, resistors R12 and R9, diodes D3 and DB3, a relay K2, a resistor R6, a photoelectric coupler U2, a resistor R8, a resistor R7, a resistor R10, capacitors C2 and C4.

摘要：【中文】本发明涉及一种电动车控制器母线额定电流自动设定装置，包括电流显示模块、烧录端口、主控模块、电源、存储模块、烧录模块和脉宽调制模块；通电后，电源指示灯常亮，电流显示模块有电流数值显示;长按设置按钮，电流显示模块的显示数值由常亮状态转换为闪烁状态，点触增加按钮或者减少按钮进行所需电流值的设定，在设置过程中电流数值处于闪烁状态，电流值确定后长按设置按钮保存所设定的电流值，设定成功后电流数值停止闪烁，并处于常亮状态；设定完成后，将烧录端口与所要生产的控制器端口正确连接，状态指示灯常亮，待状态指示灯出现闪烁状态，控制器电流自动设定完成；确保了同批次产品的一致性，提升了产品质量。 【EN】The invention relates to an automatic setting device for bus rated current of an electric vehicle controller, which comprises a current display module, a burning port, a main control module, a power supply, a storage module, a burning module and a pulse width modulation module, wherein the current display module is connected with the burning port; the power indicator lamp is normally on after being powered on, and the current display module displays a current value, the setting button is pressed for a long time, the display value of the current display module is converted into a flashing state from a normally on state, the increase button or the decrease button is touched to set a required current value, the current value is in the flashing state in the setting process, the set current value is stored by pressing the setting button for a long time after the current value is determined, and the current value stops flashing and is in the normally on state after the setting is successful; after the setting is finished, the burning port is correctly connected with the port of the controller to be produced, the state indicator lamp is normally on, and the current of the controller is automatically set when the state indicator lamp is in a flashing state; the consistency of products in the same batch is ensured, and the product quality is improved.

摘要：【中文】一种钻井液用聚合物纳米封堵剂的制备方法，(1)在蒸馏水中加入MMA和乳化剂搅拌；(2)向搅拌均匀的溶液中加入HEMA，搅拌至溶液透明，制成预乳液；(3)量取所述预乳液，恒温水浴加热、通氮气搅拌；(4)加入过硫酸钾‑亚硫酸氢钠，随后滴加氢氧化钠溶液调节pH值；(5)在密封环境下、将温度控制在55～75℃间，慢速搅拌2～5h后取出。评价时，先制备人造泥饼、配制测试钻井液；再利用高温高压失水仪在不同温度下进行封堵对比实验，根据出水量计算泥饼渗透率，对封堵效果进行评价。本发明旨在解决目前高温深井常用纳米封堵剂存在封堵剂颗粒尺寸不匹配问题。 【EN】A preparation method of a polymer nano plugging agent for drilling fluid comprises the following steps of (1) adding MMA and an emulsifier into distilled water and stirring; (2) adding HEMA into the uniformly stirred solution, and stirring until the solution is transparent to prepare a pre-emulsion; (3) measuring the pre-emulsion, heating in a constant-temperature water bath, introducing nitrogen and stirring; (4) adding potassium persulfate-sodium bisulfite, and then dropwise adding a sodium hydroxide solution to adjust the pH value; (5) and (3) controlling the temperature to be 55-75 ℃ in a sealed environment, stirring at a low speed for 2-5 h, and taking out. When in evaluation, firstly preparing artificial mud cakes and preparing test drilling fluid; and then, a high-temperature high-pressure water loss instrument is used for carrying out plugging comparison experiments at different temperatures, the permeability of the mud cake is calculated according to the water yield, and the plugging effect is evaluated. The invention aims to solve the problem that the particle size of the plugging agent is not matched in the current common nano plugging agent for the high-temperature deep well.

摘要：【中文】一种氧化石墨烯改性不锈钢表面防腐膜的制备方法。其包括不锈钢表面预处理；Silicalite‑1分子筛粉末制备；硅烷偶联剂溶液制备；Silicalite‑1分子筛/硅烷偶联剂混合溶液制备及不锈钢预浸渍；氧化石墨烯改性硅烷偶联剂/分子筛防腐膜制备；热压法处理氧化石墨烯改性硅烷偶联剂/分子筛防腐膜等步骤。本发明效果：利用氧化石墨烯来有效降低腐蚀电流密度，极大增加了分子筛膜的防腐性能。硅烷偶联剂与金属表面和分子筛发生脱水缩合反应，与氧化石墨烯发生接枝反应，在不锈钢表面形成致密的氧化石墨烯改性硅烷偶联剂/分子筛防腐膜，可显著提高不锈钢与分子筛间结合力，具有操作简单、环境友好、耐蚀性高和表面结合力好等特点。 【EN】A preparation method of a graphene oxide modified stainless steel surface anticorrosive film. The method comprises the steps of stainless steel surface pretreatment; preparing Silicalite-1 molecular sieve powder; preparing a silane coupling agent solution; preparing a Silicalite-1 molecular sieve/silane coupling agent mixed solution and pre-impregnating stainless steel; preparing a graphene oxide modified silane coupling agent/molecular sieve anticorrosive film; and treating the graphene oxide modified silane coupling agent/molecular sieve anticorrosive film by a hot pressing method. The invention has the following effects: the graphene oxide is used for effectively reducing the corrosion current density, and the corrosion resistance of the molecular sieve membrane is greatly improved. The silane coupling agent and the metal surface and the molecular sieve have dehydration condensation reaction and graft reaction with graphene oxide, and a compact graphene oxide modified silane coupling agent/molecular sieve anticorrosive film is formed on the surface of the stainless steel, so that the binding force between the stainless steel and the molecular sieve can be obviously improved, and the method has the characteristics of simplicity in operation, environmental friendliness, high corrosion resistance, good surface binding force and the like.