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139results about How to "Low maintenance" patented technology

Achievement of single chip microcomputer firmware upgrading method based on network

The invention discloses the achievement of a single chip microcomputer firmware upgrading method based on a network, wherein the specific achievement process comprises the following steps of firstly designing memory address space of a BootLoader program and a user program in an internal memory of a single chip microcomputer; programming the BootLoader program by utilization of a JTAG (Joint Test Action Group) interface or an emulator, wherein the BootLoader program has module functions of reading, writing and erasing memory data, jumping program addresses and downloading network data; writing the BootLoader program in an on-chip Flash; erasing and writing an on-chip user program in the single chip microcomputer through the BootLoader program so as to realize remote upgrading and operation of the user program in the on-chip Flash. Compared with the prior art, the achievement of the single chip microcomputer firmware upgrading method based on the network has the advantages that the remote upgrading of the system firmware of the single chip microcomputer is realized, the convenience of the product firmware upgrading is improved, the system maintenance cost can be reduced at the same time, better economic benefits can be produced, and the effects of higher actual engineering application values, strong practicability, wide application range and easiness in popularization are achieved.
Owner:INSPUR QILU SOFTWARE IND

COD (chemical oxygen demand) online monitoring instrument

The invention relates to a COD (chemical oxygen demand) online monitoring instrument. The COD online monitoring instrument comprises a control pipeline of a PLC (programmable logic controller) control system, a sample and reagent storage device and a reaction device which are controlled to be communicated, and a photoelectric metering tube, wherein a piston pump for sample injection is arranged on the outer side of the pipeline, the sample and reagent storage device comprises a water sample bottle, a zero-point standard solution bottle, a COD standard solution bottle, a masking agent solution bottle, an oxidant solution bottle and a catalyst solution bottle which are selected by a multi-way valve to open and close, and the multi-way valve can selectively open and close a water sample or reagent pipeline for controlling sample injection. The reaction device comprises heating wires, a digestion colorimetric tube, a fan, a colorimetric light source and an upper electromagnetic valve, wherein the photoelectric metering tube is linked with the control pipeline, an upper light source and a photoelectric detector thereof as well as a lower light source and a photoelectric detector thereof are arranged outside the photoelectric metering tube, and the photoelectric metering tube is connected with the PLC control system through a photoelectric conversion circuit. The COD online monitoring instrument disclosed by the invention adopts a PLC control technology to realize optical-mechanical-electrical integration, can realize complete and through automation, and has the advantages of low failure rate, low maintenance quantity, low reagent consumption and higher performance-price ratio.
Owner:江西夏氏春秋环境股份有限公司

Automatic hydraulic unhooking device

The invention discloses an automatic hydraulic unhooking device. The automatic hydraulic unhooking device comprises an oil cylinder, an automatic hooking device and a hydraulic system for controlling the pressure of a rod cavity of the oil cylinder, wherein the automatic hooking device is fixed at the end part of a piston rod of the oil cylinder; the automatic hydraulic unhooking device is also provided with mechanical locks, and the mechanical locks are mounted on an outer cylinder wall of the oil cylinder in pairs; an unlocking rope is arranged on the mechanical locks; an unhooking rope is mounted between the automatic hooking device and the mechanical locks; one end of the unhooking rope is connected with the automatic hooking device, and the other end of the unhooking rope is connected with the mechanical locks. According to the automatic hydraulic unhooking device disclosed by the invention, a hammer is lifted by the mechanical locks, and the hydraulic bearing of a high-speed oil cylinder is replaced by the rigid bearing of a mechanical-lock structure, so that the problem that when the heavy load of the high-speed oil cylinder is lifted, a piston rod slides off is solved; the working pressure in the high-speed oil cylinder is low, and the sealing, manufacturing and maintenance cost is low; the piston rod of the high-speed oil cylinder is unlocked by the mechanical locks through the traction of the unlocking rope, so that the automatic hydraulic unhooking device is simple and convenient to operate, high in reliability, and suitable for impact machinery to perform unhooking operation.
Owner:CHANGSHA JIABAI PRECISION MACHINERY CO LTD

Alkene hydroformylation flow reactor

The invention relates to a continuous reactor for olefin hydroformylation, which consists of a gas-liquid distribution section A at the upper part, a mass transfer reaction section B at the middle part, and a gas-liquid distribution section C at the lower part. The gas-liquid distribution section A at the upper part is provided with an inlet pipe of mixed gases consisting of hydrogen and carbon monoxide and an inlet pipe of catalyst solution; the mass transfer reaction section B at the middle part is a key part of the reactor, is cylindrical, and is filled with hydrophilic fibrous membrane consisting of metal fiber the diameter of which is 0.01 to 0.2 millimeter; a cylinder of the mass transfer reaction section B extends into the gas-liquid distribution section C, while the fibrous membrane consisting of the metal fiber extends to the bottom of the gas-liquid distribution section C; and the side wall of the gas-liquid distribution section C is provided with a reaction residual gas outlet 3 and an outlet 4 of reaction product liquid aldehyde, and the bottom of the gas-liquid distribution section C is provided with a catalyst solution outlet 7 which is connected with a circulating pump through a pipeline to make catalyst solution flow circularly. The reactor has the advantages of high reaction efficiency, no back mixing, low production cost and durability.
Owner:刘宽 +1

Compact type in-line liquid separator

The invention relates to a compact type in-line liquid separator. The compact type in-line liquid separator comprises a gas inlet tube, a vortex generator, a separating cavity, a gas discharge tube, a liquid discharge tube and a liquid-level control valve, wherein the gas inlet tube, the vortex generator, the separating cavity and the gas discharge tube are connected by a flange in sequence; a guide vane of the vortex generator is in tight fit with a vortex generator housing; the guide vane can whirl after a gas-liquid mixture flows through the guide vane in the housing; the liquid discharge tube is connected with the tail end of the separating cavity, and the liquid-level control valve is mounted at the tail end of the liquid discharge tube. The liquid separator is mainly used for separating a liquid in the gas-liquid mixture( with a gaseous phase as a main body), so that the compact type in-line liquid separator, which is simple in structure, convenient for mounting, relatively low in pressure drop and high in separating efficiency, can be provided for the fields of offshore platforms, deepwater or ultra-deepwater oil and gas development (petroleum, natural gas, chemical engineering, biology and environmental protection), and the like. The device can be mounted and operated under a condition of complex environment and a limited space, can be used for effectively removing the liquid in the gas, and is high in reliability.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY

Dielectric loss on-line monitoring device for 35kV high voltage parallel connection power capacitor group

The invention discloses a dielectric loss on-line monitoring device for a 35kV high voltage parallel connection power capacitor group. The device includes first to ninth current sensors, a current transformation circuit, a voltage transformation circuit, an analog-to-digital conversion module, a microprocessor, a display, a keyboard and a power module, and has the beneficial effects that by use of the device, the running state of the power capacitor group can be known without a power cut, and adverse effects of an equipment power cut on clients and power supply reliability are reduced. The dielectric loss on-line monitoring device in the invention well conforms to operation and overhaul conditions of a power capacitor group, thereby improving monitoring effectiveness; the device can reflect the running state of the power capacitor group in real time, plays a very good role in discovering hidden dangers in time, preventing power supply accidents, and ensuring safe power supply, and overcomes blindness brought by a traditional preventive test; and one-time FFT computation can obtain harmonic wave values of all orders of two channels, computed values are reduced, and engineering requirement for speediness, accuracy and real-time analysis in power quality monitoring are well met.
Owner:STATE GRID CORP OF CHINA +1

Wind-driven multifunctional vortex tube refrigeration and air conditioning system

The invention discloses a wind-driven multifunctional vortex tube refrigeration and air conditioning system comprises a vortex tube, an air compressor communicated with an inlet of the vortex tube, a wind power generation device supplying electric energy to the air compressor, a freezing chamber with a freezing heat exchanger, a refrigerating chamber with a refrigerating heat exchanger, a hot water tank with a hot water heat exchanger, a room heating heat exchanger and a room cooling heat exchanger, wherein the room heating heat exchanger and the room cooling heat exchanger are arranged in a building house; cold fluid flowing out of a cold end outlet of the vortex tube is divided into two paths, one path passes through the freezing heat exchanger and the refrigerating heat exchanger in sequence and provides cold quantity for the freezing chamber and the refrigerating chamber, and the other path provides cold quantity for the building house through the room cooling heat exchanger; a hot end outlet of the vortex tube passes through the hot water heat exchanger and the room heating heat exchanger sequentially and provides heat quantity for the hot water tank and the building house. Wind power is utilized to generate electricity, and comfortable air quality is available to seaside residential houses; food can be frozen, refrigerated and preserved; the demand for hot water for life of residents living in the windy seaside can be met.
Owner:ZHEJIANG COLLEGE OF CONSTR +1
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