30results about How to "No on-site operation required" patented technology

Anti-falling type advertisement display rack includes a frame; an upright display board is arranged on the frame, the right end of the display board is elastically hinged with the frame by a torsion spring, the upper end of the display board is provided with a vertical rotation stop lever arranged above the display board, the frame is provided with a sliding bar vertically sliding above the rotation stopper, the lower end of the sliding bar is provided with a stopper, the stopper is provided with an inverted U-shaped opening groove horizontally penetrating the stopper, the upper end of the rotation stopper is arranged in the opening groove, and the front and rear ends of the stopper are arranged symmetrically before and after, and the wedge-shaped surface faces downward; The frame is provided with an anemometer arranged above the sliding rod and coaxially with the sliding rod, the anemometer is provided with a first rotating ring coaxially connected with the anemometer and disposed between the slide bar and the anemometer, The sliding rod is provided with a second rotating ring arranged on the upper end of the sliding rod and rotating coaxially with the sliding rod, a plurality offirst connecting rods with circumferential distribution are hinged on the first rotating ring, and a plurality of second connecting rods with circumferential distribution are hinged on the second rotating ring, and the first connecting rods correspond to the second connecting rods one by one and are hinged with each other.

The invention discloses a petroleum drill rod surface rust removing device which comprises an annular rotating plate. The annular rotating plate is arranged on the outer diameter of a petroleum drill rod in a sleeved mode. A gap is formed between the inner radial face of the annular rotating plate and the petroleum drill rod. A plurality of sleeves are arranged on the outer surface of the annular rotating plate. Each sleeve is just provided with one opening. The opening direction of each sleeve points to the axis of the petroleum drill rod. The petroleum drill rod surface rust removing device further comprises a sliding column penetrating through the annular rotating plate. One end of the sliding column extends into the sleeves, and the sliding column is connected to the closed end faces of the sleeves through a spiral spring. The other end of the sliding column is connected with a universal ball connected to the outer radial face of the petroleum drill rod in a pressing mode. The left side face of the annular rotating plate is provided with a support plate A provided with a first motor. A first motor output shaft of the first motor penetrates through the support plate A and points to the direction of the petroleum drill rod, one end, away from the first motor, of the first motor output shaft is connected with a grinding disk. The grinding disk is connected to the outer radial face of the petroleum drill rod in a pressing mode. The petroleum drill rod surface rust removing device can fast clear substances on the surface of the petroleum drill rod, and the hand labor intensity is relieved.

The invention discloses a device used for cleaning the surface of a petroleum pipeline. The device comprises a cleaning assembly. The cleaning assembly comprises a driving disc, a motor, a second-level gear, a driven disc and a grinding tool. The driving disc is in a disc shape. A first U-shaped notch is formed in the driving disc. An annular notch is formed in one end face of the driving disc andis concentric with the driving disc. The driven disc is installed in the annular notch of the driving disc. The driven disc comprises a round pipe body and gear teeth. A notch is formed between the outer circle and the inner circle of the round pipe body, and the multiple gear teeth are evenly distributed on the circumference of the surface of the outer circle of the round pipe body. The gear teeth of the driven disc are in engaged transmission with the second-level gear, and the second-level gear is connected with the driving disc in a pivotal manner. A motor is fixedly connected with the driving disc, and a first-level gear is arranged on a rotor output shaft of the motor. The first-level gear and the second-level gear are in engaged transmission. The grinding tool is arranged in the round pipe body of the driven disc. By means of the device, the working efficiency is improved, the manual labor intensity is lowered, and construction personnel do not need to conduct operation on thefield.

The invention discloses an automatic rust removing device for petroleum pipe fittings. The device comprises a base, a slide table, a motor, a transmission shaft and a polishing module; the slide tableis arranged at the upper part of the base through a guide rail; the slide table linearly moves in the length direction of the base; the motor is fixedly mounted on the slide table; a rotor output shaft of the motor is connected with one end of the transmission shaft; the other end of the transmission shaft is connected with the polishing module; the polishing module comprises a rotating disc; multiple polishing pieces are arranged on an outer circle of the rotating disc; and the multiple polishing pieces are uniformly arranged along the outer circle of the rotating disc. The polishing machinereduces the labor intensity of manual rust removal, and meanwhile, greatly improves the rust removing efficiency. The polishing machine adopts mechanical polishing to replace manual polishing, improves the working efficiency, achieves quick removal of rust and burrs on the inner walls of petroleum pipes, reduces the labor intensity, and needs no field operation by constructors.

The invention relates to an unmanned hedgerow pruning machine and a control method therefor, and belongs to the technical field of green belt pruning equipment. The unmanned hedgerow pruning machine comprises an electric vehicle, a GPS positioning device, a multiline laser radar, a pruning device and a control system; a horizontal frame is fixedly arranged at the front part of the electric vehicle; a horizontal ball screw is rotatably installed in the horizontal frame; a horizontal motor is fixedly arranged at the outer side of one end of the horizontal frame; the horizontal motor is connectedwith one end of the horizontal ball screw; the lower end of a vertical frame is installed on the horizontal ball screw through a horizontal ball screw pair; a vertical ball screw is rotatably installed in a vertical frame; a vertical motor is fixedly installed at the top part of the outer side of one end of the vertical frame; the vertical motor is connected with the top part of the vertical ballscrew; a saw web frame is arranged vertically; and a plurality of circular saw webs are rotatably installed on the saw blade frame. The unmanned hedgerow pruning machine can perform unmanned drivingand unmanned pruning, and is high in working efficiency and safety.

The invention discloses an intranet server monitoring system based on a GSM modem. The system comprises an application server cluster, at least two short message modems, at least two short message receiving devices and an operation and maintenance server cluster, and the application server cluster is used for collecting operation and maintenance monitoring information regularly and sending the collected operation and maintenance monitoring information to the short message modems; the short message modems are used for receiving the operation and maintenance monitoring information sent by the application server cluster and sending the operation and maintenance monitoring information to the short message receiving equipment in a short message mode; the short message receiving devices are usedfor receiving a short message sent by the short message modems and sending short message text information to the operation and maintenance server; and the operation and maintenance server cluster isused for receiving the short message text information sent by the short message receiving devices and counting the operation and maintenance state data of the application server according to the shortmessage text information. The operation and maintenance state of the intranet server can be automatically monitored, operation and maintenance personnel can remotely know the operation state of the server, field operation is not needed, and labor cost is saved.

The invention discloses a cladding-type petroleum drill pipe surface rust removing device. The cladding-type petroleum drill pipe surface rust removing device comprises an annular rotary plate arranged on the outer diameter of a petroleum drill pipe in a sleeved mode, a plurality of sleeves are arranged on the outer surface of the annular rotary plate, and the two ends of each sleeve are opened. The cladding-type petroleum drill pipe surface rust removing device further comprises a sliding column penetrating through the annular rotary plate, one end of the sliding column extends into the inner cavity in each sleeve, the sleeves and the sliding column are connected in a sleeved through threads, the end, extending into the sleeves, of the sliding column is a rotary knob end, and a strip-shaped groove is formed in the end face of the rotary knob end; a universal ball is connected to the other end of the sliding column and connected to the outer diameter face of the petroleum drill pipe in a pressed mode; three vertexes of a triangular plate are connected with the annular rotary plate through three connecting columns, the triangular plate is connected with a hydraulic cylinder, an output shaft of the hydraulic cylinder penetrates through the triangular plate and points to the petroleum drill pipe, an arc-shaped embracing plate is connected to the outer diameter face of the petroleum drill pipe in a pressed mode, and abrasive paper is arranged on the side, facing towards the petroleum drill pipe, of the arc-shaped embracing plate. The cladding-type petroleum drill pipe surface rust removing device can be used for fast removing substances on the surface of the petroleum drill pipe and reduce manual labor intensity.

The invention discloses an unattended parking cabin which comprises a cabin body, a lifting partition plate, a first cabin door, a second cabin door, a horizontal driving motor, a horizontal nut lead screw pair, a lifting driving motor, a lifting nut lead screw pair and a charging base. The cabin body is provided with a machine body accommodating cavity with an open upper end, the open end of the machine body accommodating cavity is slidably connected with a first cabin door and a second cabin door in the length direction, and the horizontal driving motor is in transmission connection with the first cabin door and the second cabin door through a horizontal nut lead screw pair; the lifting partition plate is connected to the vertical side wall of the machine body containing cavity in a sliding mode, and the lifting driving motor is in transmission connection with the lifting partition plate through a lifting nut lead screw pair. A charging base is arranged at the bottom of the vehicle body containing cavity and used for charging the unmanned aerial vehicle. The unmanned aerial vehicle has the technical effects of remote control, autonomous charging, autonomous take-off and landing, clustered autonomous operation and the like, and can be widely applied to industries such as environment monitoring, electric power inspection, pipeline inspection, forest fire prevention, emergency detection and the like.

The invention discloses a Web configuration method for industrial equipment. According to the technical scheme, the Web configuration method specifically comprises the following steps of S1, constructing cloud data, wherein the cloud data comprises a configuration application server, a file server and a data server; S2, carrying out collection, storage, knowledge mining and packaging on the industrial field equipment data through the Internet of Things technology; S3, operating and using, wherein the cloud provides a configuration application for a user in a network form, and a user remotely accesses the industrial field data and the configuration editor, clicks, selects and drags the equipment and arranges the equipment into the configuration editing according to requirements or the actual conditions, forms a simulation image consistent with the industrial field, connects a dynamic data source matched with the industrial field equipment for the simulation image, and finally forms an interface for driving animations via data by linking the data source with the simulation interface. The Web configuration method has the advantages of being good in remote control capability, high in implementation efficiency and not high in universality.

The invention discloses an intelligent identification and management system based on ZigBee networking. The intelligent identification and management system based on the ZigBee networking comprises a ZigBee wireless network, a remote device and a terminal device additionally provided with level identification software. Wireless communication connection is established between the terminal device and the remote device through a ZigBee wireless network to achieve data transmission. The terminal device is connected with a camera and an LED display screen used for publicly showing relevant information. According to the intelligent identification and management system, checking-in modes are diversified, the terminal device is connected with the remote device through the ZigBee wireless network, the multi-node arrangement and installation can be rapidly carried out, the remote control function can be utilized for updating the terminal information at any time, and the LED display screen is utilized for publicly showing the relevant information. Due to the utilization of the wireless network, field operations for achieving the functions are not required, only the remote operation is required on a computer through a wireless module, and the intelligent identification and management system is rapid and convenient to use.

The invention discloses an axial pressure type rust removing device for the surface of a petroleum drill rod. The device comprises an annular rotating plate, wherein the outer diameter part of the petroleum drill rod is sleeved with the annular rotating plate. A gap is formed between the inner diameter face of the annular rotating plate and the petroleum drill rod. Multiple sleeves are arranged on the outer surface of the annular rotating plate, the two ends of each sleeve are open, and the device further comprises sliding columns which penetrate through the annular rotating plate. One end of each sliding column extends into an inner cavity in the corresponding sleeve, and the sleeves are in threaded connection with the sliding columns. One end, extending into the corresponding sleeve, of each sliding column is a knob end, and strip-shaped grooves are formed in the end faces of the knob ends. The other ends of the sliding columns are connected with universal balls which are pressed on the outer diameter face of the petroleum drill rod. A support plate A is arranged on the left side face of the annular rotating plate, a first motor is installed on the support plate A, a first motor output shaft of the first motor penetrates through the support plate A and points to the direction of the petroleum drill rod, and one end, away from the first motor, of the first motor output shaft is connected with a grinding disc. The device can clear substances on the surface of the petroleum drill rod rapidly, and labor intensity can be relieved.

The invention relates to a dilute phosphoric acid solution distribution device for hydrogen peroxide production. The distribution device consists of a concentrated phosphoric acid storage tank, a concentrated phosphoric acid pump and a dilute phosphoric acid preparation tank. The concentrated phosphoric acid pump is provided with an inlet valve, an outlet valve and a by-pass valve. The top of the dilute phosphoric acid preparation tank is in connection with a pure water valve and an air valve respectively, the bottom is provided with a perforated round air distribution pipe, the dilute phosphoric acid preparation tank outlet pipeline is connected to a working solution storage tank through a fast acid adding valve, the dilute phosphoric acid preparation tank outlet pipeline is in connection with a hydrogenation liquid pump inlet pipeline through a front acid adding valve and acid adding sight glass, the dilute phosphoric acid preparation tank outlet pipeline is connected to an acid water mixer on a pure water pipeline through a dilute acid intermediate valve, a dilute acid intermediate tank and a dilute acid metering pump, and the dilute phosphoric acid preparation tank outlet pipeline is connected to a preparation kettle through a preparation acid adding valve. The dilute phosphoric acid solution distribution device provided by the invention can be applied to dilute phosphoric acid solution preparation and use in hydrogen peroxide production, effectively acoids direct contact of the operation staff with phosphoric acid, improves the automation degree of acid preparation and acid use process, and is conducive to safe and stable operation of the device.

The invention relates to an evaporator and inner container assembling method. The evaporator and inner container assembling method comprises the following steps of providing a refrigerator inner container, providing a metal sleeve, providing an evaporator, and enabling the evaporator to attach to the outer side of the metal sleeve; covering the metal sleeve and the evaporator which are assembled, outside the inner container of the refrigerator. The evaporator attaches to the outer side of the metal sleeve, and the metal sleeve and the evaporator which are assembled are arranged outside the inner container of the refrigerator in a covered mode, so that a field operation is not needed, assembly is quick and convenient, and follow-up maintenance is facilitated.

The invention provides a bridge displacement measurement system and an expansion joint width measurement method. The bridge displacement measurement system comprises a bridge body paved on a pier, and is characterized in that an ultrasonic reflecting plate is arranged on the surface of the bridge body, a mounting frame is fixed on the pier, an ultrasonic probe, which is a transceiving-integrated ultrasonic sensor, is arranged on the mounting frame, and an emission area of the ultrasonic probe is opposite to a reflection area of the ultrasonic reflecting plate. The bridge displacement measurement system and the expansion joint width measurement method have the advantage that a novel measurement means depending on mature and stable technologies is provided for relative displacement measurement of the bridge body and the pier and capable of efficiently and economically measuring relative displacement data of the bridge body and the pier in real time without onsite operation of personnel.

The invention discloses a steam generator simulation body water supply system used in the heating and boosting process and a control method. The water supply system comprises a steam generator simulation body, a water supply voltage stabilizer and a condenser. The water supply voltage stabilizer communicates with the steam generator simulation body through a water inlet pipe. The steam generator simulation body communicates with the condenser through a steam pipe. A water feed pump is arranged on the water inlet pipe. The outlet end of the condenser communicates with the inlet end of the waterfeed pump through a cold water pipe. A frequency conversion multi-stage centrifugal pump is adopted as the water feed pump. A bypass branch pipe of the water feed pump is arranged on the water inletpipe in parallel. A heat regenerator is arranged on the water inlet pipe and located at the rear end of the water feed pump. The outlet end of the heat regenerator communicates with the inlet end of the condenser. The inlet end of the heat regenerator communicates with the outlet end of the condenser. Flow meters and regulating valves are arranged on the water inlet pipe, the steam pipe and the bypass branch pipe correspondingly.

The invention discloses a method for pretreatment of waste emulsion. The method comprises the following three steps: oil-water separation, catalytic oxidation, and sedimentation and coagulation. The invention also provides a treatment system adopting the method. The treatment system comprises three separation tanks and an oxidation reaction tank which are connected in sequence and are respectivelyprovided with a first-stage lifting pump, a second-stage lifting pump and a third-stage lifting pump, wherein an outlet of the oxidation reaction tank is connected with an aeration tank, and an outlet of the aeration tank is connected with a sedimentation tank; an outlet of the sedimentation tank is connected with a neutralization coagulation tank, and an outlet of the neutralization coagulationtank is connected with an inclined-plate sedimentation tank; and the sedimentation tank and the inclined-plate sedimentation tank are separately connected with a suspension tank. The method and systemare good in treatment effect on the waste emulsion; the removal rate of COD in the waste emulsion reaches 98.74%-99.57%; and pretreated wastewater reaches the standard of wastewater capable of beingbiochemically treated. The system is simple in equipment, low in investment, wide in applicability, convenient to operate and maintain and low in later equipment maintenance cost and chemical feedingcost.

The invention discloses a skin transplantation manipulator for the burns department. The skin transplantation manipulator comprises an article table, a medicine spraying module, a skin transplantationmodule, a module conversion device and a positioning device, wherein a skin transplantation motor rotates to transfer an article to a motor fixing plate; a conversion motor runs and rotates to transfer the article to a conversion front gear; the conversion front gear rotates to finally transfer the article to a conversion fluted disc; a conversion device shell fixed on a positioning rack is usedfor driving a whole module conversion device to carry out positioning; a positioning module carries out positioning, and an article on the article table is sucked through the transplantation module and is transplanted in a patient; the medicine spraying module carries out conversion and medicine spraying through the conversion device to guarantee that the burnt epidermis can not be abraded in a transplantation process, and the burnt epidermis can not be polluted. When the skin transplantation manipulator for the burns department is used, the skin transplantation manipulator for the burns department is safe and convenient, the burn patient can be treated and cured in time, and the patient can quickly recover the appearance.

The invention relates to a high-temperature sealing discharging device and method. The high-temperature sealing discharging device comprises a first chute, a second chute and a plate turnover device,working equipment communicates with or is disconnected with the upper end of the first chute through a first electric high-temperature sealed gate, and the lower end of the first chute communicates with or is disconnected with the second chute through a second electric high-temperature sealed gate. The plate turnover device is arranged at the lower end of the second chute, and the plate turnover device opens and closes a lower end opening of the second chute. A first nitrogen interface solenoid valve and a second nitrogen interface solenoid valve are separately arranged on the first chute andthe second chute, and nitrogen is fed through opening and closing of the first nitrogen interface solenoid valve and the second nitrogen interface solenoid valve. The high-temperature sealing discharging device can perform emergency discharging on high-temperature inflammable and explosive bulk materials.

The invention discloses an SF6 gas detection system for a GIS air tightness test, which comprises a buckle cover, a multi-point sampler, a photoacoustic spectrum gas analyzer and a PC terminal, and is characterized in that the buckle cover comprises a housing, fresh air pipelines and a fresh air fan, the housing forms a closed detection space and is used for accommodating a to-be-detected GIS, a plurality of fresh air pipelines are laid in the detection space, and the plurality of fresh air pipelines are connected with the fresh air fan; the multi-point sampler is used for connecting each high-voltage switch acquisition point of the GIS in the buckle cover with the photoacoustic spectrum gas analyzer; and the photoacoustic spectrum gas analyzer is used for controlling the multi-point sampler to carry out gas collection and switching on the collection points of the high-voltage switch, carrying out real-time monitoring and analysis on each collection point through gas path switching of the multi-point sampler, and sending an analysis result to the PC terminal. The system can perform gas detection on each test point of the GIS in real time, has the advantages of remote operation, no need of field operation and the like, and realizes unattended operation.

The invention discloses a discharge structure of a glass kiln. The glass kiln comprises a material channel shell of which the bottom is provided with a discharge hole and a material channel arranged inside the material channel shell as well as a material channel discharge bottom brick, a discharge brick and a heat resistant hole plate which are sequentially arranged below the material channel from top to bottom, wherein the material channel discharge bottom brick, the discharge brick and the heat resistance hole plate are respectively provided with a first discharging part, a second discharging part and a third discharging part, and two sides of each second discharging part are provided with a molybdenum electrode; and the heat resistant hole plate is arranged below the discharge hole, and the side of the heat resistant hole plate in contact with glass liquid is provided with more than one heating rod. The invention has the advantages that degenerative glass liquid on the bottom layer of the material channel can be completely and thoroughly discharged; the main glass liquid temperature of the material channel cannot be influenced by discharging; the discharging quantity can be freely regulated and controlled as required; the structure is simple to operate and only needs remote current regulation without site operations; and the cost of the discharge structure is low, which is beneficial to the popularizing.

The present invention provides a portable load data acquisition system and method. The portable load data acquisition system comprises a load interface and a power supply, and the load interface is electrically connected with a sampling module and is used for accessing electrical equipment of which electricity utilization information is to be acquired; the load interface is connected with a power supply through an electric wire, the signal conditioning circuit module is electrically connected with the CPU, and the CPU is electrically connected with the sampling module and used for conditioning signals; the sampling module is electrically connected with the SD card storage module and the load interface, and is used for collecting power consumption data of the load interface and sending the power consumption data to the SD card storage module for module storage; and the CPU is also electrically connected with a wireless network card module, is connected with an upper computer through the wireless network card module, and sends the power utilization data of the load interface collected by the sampling module to the upper computer. According to the portable load data acquisition equipment, the connection with the upper computer is realized through the wireless network card, the device is controlled by the upper computer to perform data acquisition and acquisition, and the acquisition information stored in the SD card can also be acquired, so that the portable load data acquisition equipment is very convenient and portable, and manual field operation is not needed.

The invention discloses a steam generator simulation body water supply system and a control method in the process of temperature rise and pressure increase. The water supply system includes a steam generator simulation body, a feed water regulator, and a condenser. The body is connected through the water inlet pipeline, the steam generator simulation body is connected with the condenser through the steam pipeline, a feed water pump is arranged on the water inlet pipeline, and the outlet end of the condenser and the inlet end of the feed water pump pass through the cold water pipeline connected, the feed water pump adopts frequency conversion multi-stage centrifugal pump, the bypass branch of the feed water pump is arranged in parallel on the water inlet pipeline, and a heat regenerator is arranged on the rear end of the feed water pump on the water inlet pipeline, and the heat regenerator The outlet end of the regenerator communicates with the inlet end of the condenser, the inlet end of the regenerator communicates with the outlet end of the condenser, and flow meters and regulating valves are arranged on the water inlet pipeline, steam pipeline and bypass branch .

The invention discloses an intelligent control banana seedling raising device. The seedling raising box is provided with a seedling raising room and a flip cover, and a tray for cultivating banana seedlings is placed in the seedling raising room. system, an illumination control system and a control device, the control device is respectively connected with the spray system, the nutrient solution spray system, the ventilation system, the air purification system, the heating system, and the illumination control system; the control device includes a circuit control module and a wireless receiving and transmitting The module and the circuit control module are electrically connected to the wireless receiving and transmitting module, and the wireless receiving and transmitting module is matched and connected with a mobile terminal. By setting up a wireless receiving and transmitting module and adopting a wireless networking method to carry out remote intelligent adjustment and control of the growth elements required for banana seedling cultivation, the operation is convenient, no on-site operation is required, and time and effort are saved.

The invention discloses a method for quickly setting a control device. The method comprises the following steps: S1, a configuration request is sent to a management server by a handheld terminal, and the management server audits the configuration permission of the control device; S2, if the configuration request is failed to be audited by the management server, the present configuration process is terminated, and if the configuration request is successfully audited by the management server, the management server sends configuration information of the control device corresponding to a sequence number to the handheld terminal; S3, the handheld terminal sets to-be-modified parameters in the configuration information; S4, the handheld terminal sends special carrier frequency data to the control device; and S5, the control device receives the special carrier frequency data, performs frequency band match on the special carrier frequency data and converts the special carrier frequency data into a digital signal, and a processor chip of the control device analyzes the configuration information, and performs system configuration according to the configuration information at last. By adoption of the method disclosed by the invention, the efficiency, accuracy and security of configuration of the control device are improved.

The invention relates to a concrete crack repair material and method, in particular to a concrete crack repair material and method based on the mineralization deposition of facultative aerobic mixed bacteria. The method solves the problems that the repair efficiency of the existing concrete crack repair method based on pure bacteria mineralization deposition is significantly reduced in an anoxic environment, and the preparation process of pure bacteria is relatively expensive. The invention provides a concrete crack repair material and method based on the mineralization deposition of facultative aerobic mixed bacteria. The facultative aerobic mixed bacteria can grow in an aerobic or anaerobic environment, and generally aerobic growth is the main method. , aerobic respiration under aerobic conditions, and anaerobic respiration or fermentation under hypoxic or anaerobic conditions. Therefore, facultative aerobic mixed bacteria are more suitable for actual concrete structures, and are beneficial to crack repair in the direction of crack depth.

The invention discloses a bridge displacement and expansion joint width remote metering system based on internet of things and ultrasonic waves. The system is innovatively characterized in that ultrasonic reflective plates are respectively arranged on the surfaces of adjacent two sections of the bridge body; the two ultrasonic reflective plates are positioned on two sides of an area at which an expansion joint is positioned; a mounting rack is arranged between the two ultrasonic reflective plates and is fixed on a pier; two ultrasonic probes are arranged on the mounting rack; the transmitting areas of the two ultrasonic probes are respectively opposite to the reflective areas of the two ultrasonic reflective plates; the ultrasonic probes adopt transmitting / receiving integrated ultrasonic transducers. The system has the beneficial effects that a novel measurement means is provided for measurement of relative displacement between the bridge and the pier and displacement of the expansion joint of the bridge body, the technology of the novel measurement means is mature and stable, the data of the relative displacement between the bridge and the pier and the displacement of the expansion joint of the bridge body can be measured at high efficiency in real time, field operation of the personnel is not needed, and the cost is low.

The invention relates to a coupled low-temperature multi-effect sea water desalination system based on multi-energy complementation. The system comprises a photovoltaic and photothermal heat collector, a wind driven generator, an electric auxiliary heating device, a heat storage device, a saturated steam generation device and a multiple-effect evaporation sea water desalination device. The photovoltaic and photothermal heat collector and the wind driven generator are connected through a wind energy and solar energy complementation controller to form a heat supply device and a power supply device in combination, the heat supply device is connected with the heat storage device, the electric auxiliary heating device and the saturated steam generation device in sequence, and the power supply device is connected with the electric auxiliary heating device, electric equipment connected with the multiple-effect evaporation sea water desalination device and a storage battery for collecting surplus power. Compared with the prior art, the solar energy and wind energy organically-coupled low-temperature multi-effect sea water desalination system is used for obtaining fresh water, and the system has high solar energy utilization efficiency and is stable and reliable in operation.

The invention provides an extensible long-distance multi-path gas sampling extension device, which comprises a direct-acting electromagnetic valve group, a quick-change connector, a multi-path I / O signal isolation amplifier, a wiring terminal module, a power supply module, a main control board, an inert material hose and a case, and is provided with six sampling gas inlets, the device is provided with six sampling gas inlets, the sampling gas inlets are respectively connected with the two direct-acting electromagnetic valve groups through the three-way adapter, the two direct-acting electromagnetic valve groups are respectively and directly connected with the sampling gas inlets and the to-be-sampled gas inlet, one of the two valve groups is used for sampling, and the other valve group is used for to-be-sampled gas, so that the purging waiting time of the next path of gas can be effectively reduced; the main control board is used for carrying out gas path on-off control on the electromagnetic valve, so that disordered switching of multiple gas paths is realized, the purpose of gas multi-path sampling is further achieved, and 1km long-distance sampling can be realized at most; the device is provided with a gas path expansion interface which can be connected with an expansion device to expand a sampling gas path according to actual requirements; the device is further provided with an external communication interface, and the gas circuit state can be monitored in real time and the gas circuit can be controlled to be switched on and off through related communication means; and the device is matched with an extensible long-distance multi-path gas sampling device (hereinafter referred to as a main control device) for use, the number of sampling gas paths can be expanded, and the utilization rate of an analytical instrument is improved.