188results about How to "Improve Field Work Efficiency" patented technology

The invention discloses a BIM based project pile construction method. The method includes the following steps: establishing a rock stratum model, a project pile model, a site environment model and a steel bar cage model; performing dynamic simulation display on a construction site layout plan through a navisworks so as to determine a construction site layout plan, and performing site layout according to the determined construction site layout plan; generating project pile coordinate position information in revit software, and performing line arrangement positioning; determining the final hole depth through the revit software and the site elevation, and performing hole drilling according to the final hole depth; performing whole model establishment on the steel bar cage model by using the revit software, and performing manufacturing and construction according to the established steel bar cage model; and determining the amount of concrete and steel bars through the revit software, and performing concrete pouring on the project piles. The BIM based project pile construction method can improve the construction efficiency of the project piles.

The invention provides a standardized construction method for a hydraulic prefabricated member based on BIM (Building Information Modeling). The standardized construction method comprises the following steps: S1, modeling a three-dimensional parameterization model by using a BIM modeling tool, and further implementing the design of three-dimension drawing according to the model; S2, dividing and classifying project units according to different members; S3, deploying corresponding members in a three-dimensional model of a specific project; S4, exporting to obtain an arrangement drawing, a detail table and control parameters of the members, and counting the project quantity of the members; S5, performing BIM on a prefabricated field, and guiding capital construction of the prefabricated field based on the BIM; S6, exporting the three-dimensional parameterization model, thereby performing specific three-dimension design and structure operation on the members; S7, simulating all stages of field operation for prefabricating the members; S8, implementing field prefabrication of the members; S9, prefabricating the members and implanting chips containing traceable prefabrication quality information of the members into the members; S10, after prefabrication of the members is finished, performing hanging safe construction on the members.

Provided are an electric marketing service expansion mobile application system and a work method thereof. . Traditional managing software which can only be used in a local area network of an electric power company greatly restrains site communication and improvement of the service quality. The electric marketing service expansion mobile application system comprises an upper computer and a portable handheld set. The handheld set is provided with a wireless communication module, a task receiving module, a route planning module, a customer information inquiring module, a power grid information inquiring module, a service expansion processing module and a site data uploading module. The upper computer is provided with a BOSS professional system. The BOSS professional system is provided with a mobile operation platform module, a service expansion data receiving module and a work order processing module. The technical scheme of the electric marketing service expansion mobile application system changes an interactive traditional operation method of going back and forth between a site and the BOSS system for many times, achieves space extension and time expansion of marketing service expansion work and improves the work efficiency and the service level again.

The invention discloses a sensitivity analysis based dynamic construction control method for one-time tension of stay cables. The method comprises the following steps: a cable-stayed bridge completion time model is established with finite element software, the model is calculated with a finite element method, and tension import value of each stay cable is obtained; uncontrollable external factors are subjected to sensitivity analysis according to the established cable-stayed bridge completion time model; the sensitivity of each stay cable is determined through analysis according to the established cable-stayed bridge completion time model; multiple tension sequence schemes and corresponding tension force are predetermined according to stay cable sensitivity analysis results, the different tension sequence schemes are calculated with the finite element method, and the optimal tension sequence scheme is selected; construction is performed according to the optimal tension sequence scheme obtained through calculation, the tension force of each stray cable and a result about sensitivity analysis of the uncontrollable external factors. With adoption of the sensitivity analysis based dynamic construction control method for one-time tension of the stay cables, the stay cable construction process is simplified.

The invention relates to a railway business line three-dimensional center line manufacturing method based on a point cloud and image fusion technology, and the method comprises the following steps: S1, field control measurement; S2, acquiring aerial photography data; S3, data preprocessing; S4, registering and fusing the laser point cloud and the image dense point cloud; S5, point cloud cutting; s6, performing real-scene three-dimensional reconstruction on the railway business line; s7, extracting track center feature points; s8, railway line center point feature extraction; and S9, manufacturing a railway three-dimensional center line. According to the method, the laser point cloud and the image dense point cloud are registered and fused, so that the density, integrity and smoothness of the laser radar point cloud are effectively improved; railway business line live-action three-dimensional reconstruction is carried out, and a live-action three-dimensional scene not only contains high-precision geometrical characteristics, but also contains rich texture attributes, so that measurement and discrimination are facilitated. According to the method, the workload of traditional railwaybusiness line surveying and mapping is effectively reduced, the field operation safety is greatly improved, and the method has great practical application value.

The invention discloses an optimization method for a heat-engine plant thermal on-line process identification and control algorithm based on a dual-objective parallel ISLAND-HFC mixed model genetic programming algorithm. The steps comprise: 1, establishing a hardware platform; 2, the optimization method being completed by executing foreground interface software and background software by the hardware platform, the background software being formed by field test and data acquisition software, process identification software, and PID controller parameter optimization software. The method makes an ISLAND model and a HFC model organically combine together, anti-prematurity convergence property is good, multi-core CPU resources of an industrial control computer are fully used, multithreading run concurrently, evolution speed is fast, and the method is suitable to solve comprehensive problems. On one hand, dual-objective evolution controls errors between an evolution model and an ideal model, and on the other hand, the structure of an evolution individual is controlled, and finally, optimal individual structure and parameters satisfy requirements. For process identification, a field process model is accurately matched, and for parameter optimization of a PID controller, optimal proportion, integral, and differential parameters are obtained.

The invention discloses a display module and a rugged tablet personal computer thereof. The display module comprises a panel module unit and an LCD (Light Crystal Display) module unit which are independent mutually, wherein the panel module unit is arranged in front of the LCD module unit and is detachably and fixedly connected with the LCD module unit. The rugged tablet personal computer comprises a host module and a display module, wherein the host module and the display module are independent respectively and are detachably and fixedly connected together; the host module comprises a rear cover and a host unit arranged in the rear cover; the host unit comprises a mainboard, a rigid disk, an IO (Input / Output) interface board, a power source and a power filter; the mainboard is respectively and electrically connected with the IO interface board, the power source and the power filter; and the mainboard is spliced with the IO interface board. The display module provided by the invention is strong in compatibility and easy to maintain and replace. The rugged tablet personal computer has the characteristics of complete computer modularization, high assembling efficiency, easiness for maintaining and replacing and balanced customization and industrialization.

The invention discloses a drilling hole acoustic radar detection method and a drilling hole acoustic radial scanning probe. The method and device have two working modes, namely a drilling hole acoustic common-depth scanning work program and a drilling hole acoustic common-angle radar scanning work program. The drilling hole acoustic radial scanning probe comprises a position controller (1), an exploring tube (2), a sensor adherence elastic arm (3), an acoustic sensor, a rubber assistance pad (4) and an elastic arm locking and trigger switch (5). According to the method and the probe, the technical problem of radial detection by utilizing hole drilling can be solved, the functions of an exploratory hole are sufficiently utilized, so that the detection capacities for deep bury and small geological flaw can be improved, identification to karst caves and other geological flaw abnormality can be distinguished directly and the working efficiency is high. The drilling hole acoustic radar detection method and the drilling hole acoustic radial scanning probe can be widely applied to geological survey, basic potential hazard troubleshooting in municipal, housing, traffic, water conservancy and hydropower and other construction fields.

The invention discloses a prefabricated building main body structure, and relates to the technical field of constructional engineering structures. The prefabricated building main body structure comprises an independent foundation; at least one layer of floor slabs is fixedly arranged above the independent foundation; a supporting structure is arranged under each layer of the floor slabs; a roof frame structure is fixedly arranged above the top layer of the floor slabs; the floor slabs comprise a plurality of combination beam plates; the supporting structure of each layer comprises a plurality of square pipe columns; tenon pipes connected with the combination beam plates in an inserting manner are arranged on the square pipe columns; a stairway is arranged between every two vertically adjacent layers of floor slabs; the combination beam plates comprise four-corner components; steel beams are fixedly connected between the adjacent four-corner components; the upper edges of the steel beams are spaced from the top ends of the four-corner components by a certain distance; concrete slabs are poured on the steel beams; reinforcement meshes are arranged in the concrete slabs; reserved pipeline holes are formed in the side surfaces of the steel beams; and the four-corner components are sleeves matched with the tenon pipes in an inserting manner. The beam and column connection is reasonable, the mounting is convenient and the flexural capacity is high.

The invention discloses a method for simultaneously measuring double-domain induced polarization full parameters. A time domain method is adopted to record and display a potential difference and a curve formed by a cycle repeated signal sent by a power supply electrode between measuring electrodes; synchronization of transmission and receiving of signals are automatically achieved by mathematical treatment; and by calculation, the real part and the imaginary part of a fundamental wave and a harmonic wave are solved according to the obtained synchronized potential difference and curve so as to further calculate apparent resistivity, apparent absolute phase position, apparent amplitude diffusivity and view diffusivity. When the apparent resistivity and the apparent absolute phase position are measured, apparent polarization rate, an apparent charging rate and an attenuation curve are calculated according to a charging curve or a discharging curve at the same time. A time domain (interrupted rectangular wave) power supply mode can be independently adopted and a frequency domain (continuous rectangular wave) power supply mode can also be independently adopted so as to realize the purpose of simultaneously measuring the double-domain induced polarization full parameters in one-time power supply. According to the method, the technical problem of providing more information which can reflect polarization body characteristics and correlated information in short one-time measurement time can be solved.

The invention relates to a cable series-resonant voltage device with a defect location function, including the following steps: (1) equipment wiring; (2) test of the insulation resistance of a cable;(3) cable calibration; (4) withstand voltage test; (5) oscillation wave test; (6) measurement of partial discharge through a system; and (7) analysis of partial discharge data through software. The device adopts an AC high voltage source. A peak synchronization signal is added to the AC variable-frequency series-resonant voltage device to make the series-resonant circuit stop power output at the peak and to close a high-voltage electronic switch at the same time, so that oscillation wave damping oscillation is formed, and cable partial discharge test can be carried out. AC resonant voltage test and oscillation wave partial discharge test can be completed by using one set of device. The device is dual-purpose. The field working efficiency is greatly improved. A partial discharge source canbe accurately located.

The invention discloses an assembly type main structure of a building, and relates to the technical field of building engineering structures. The assembly type main structure of the building comprises isolated foundations, at least one layer of supporting beam group and at least one layer of cold-formed thin-walled steel composite beam plates are arranged on the isolated foundations, and a roof frame structure is arranged on the top supporting beam group, wherein each layer of supporting beam group comprises a plurality of square tubular columns, and the upper portion of each square tubular column is provided with a beam support; each cold-formed thin-walled steel composite beam plate comprises a lipped channel stiffened structural beam, a profiled steel sheet, a reinforcing mesh and a concrete plate, and the end of each lipped channel stiffened structural beam is provided with a sleeve; each lipped channel stiffened structural beam comprises a vertical plate, a first transverse plate and a second transverse plate, a vertical baffle is arranged above each first transverse plate, and stiffened structures are arranged on the first transverse plates, the second transverse plates, the vertical plates and the vertical baffles respectively. The assembly type main structure is reasonable in beam-column connection, convenient to install, high in flexural capacity and suitable for large-span commercial complex buildings.

The invention discloses a mobile intelligent direct current power supply device, comprising a mobile control charging cabinet, a mobile pressure regulating feed cabinet and a mobile battery combined tank, wherein a first group of connecting interfaces on the mobile control charging cabinet are connected with a second group of connecting interfaces on the mobile pressure regulating feed cabinet byvirtue of cables; and the first group of connecting groups on the mobile control charging cabinet on the mobile control charging cabinet are also connected with the mobile battery combined tank by virtue of the cables. By applying the mobile intelligent direct current power supply device disclosed by the invention, electricity utilization reliability is improved, economic loss caused by fault andpower failure time is reduced, production cost is saved, working efficiency is improved, and safety management level is enhanced.

The invention discloses a cross station high-speed communication system for geophysical exploration and a communication protocol of the cross station high-speed communication system. The cross station high-speed communication system comprises a main control machine, cross stations and acquisition stations, wherein the main control machine is sequentially connected with the cross stations; the cross stations are connected by using cross lines; the acquisition stations are connected to two sides of each cross station by using large lines; each cross station comprises a field programmable gate array, a parallel-to-series converter, a series-to-parallel converter, a driver, an equalizer, a command interface and a data interface; each command interface is sequentially connected with the field programmable gate array through the driver and the parallel-to-series converter; and each data interface is sequentially connected with the field programmable gate array through the equalizer and the series-to-parallel converter. The invention is simple in structure, convenient to operate and use, and low in cost; data transmission speed rate reaches 144 Mbps; and when a transmission medium is an unshielded twisted pair, distances of data transmission and data receiving are 100 meters.

The invention relates to an electrified detection standardized operation management system based on mobile and cloud computing technologies, which comprises an electrified detection device, an electrified detection management terminal and a task management module, wherein the electrified detection device is used for acquiring data of a detected object; the electrified detection management terminal is connected with the electrified detection device, receives and stores corresponding data of the detected object according to an electrified detection task, and sends out the data of the detected object through a wireless network; and the task management module is connected with the electrified detection management terminal, sends the electrified detection task to the electrified detection management terminal, receives feedback data of the electrified detection management terminal at the same time, displays the feedback data and generates an analysis report. Compared with the prior art, the electrified detection standardized operation management system has the advantages of abilities of effectively improving the work efficiency, realizing fine management for tasks, and the like.

The invention relates to a distributed data recovery method for a wireless storage type seismometer. The method comprises a triggering distribution method and a parallel recovery method of all sets of seismic data. Apart from collecting seismic data, a triggering station can record a focus triggering time mark; after exploration is completed, a hand-held terminal is used for recovering triggering time mark information in the triggering station, the scanning duration and the sampling rate are edited, and thus triggering information files are generated and are transmitted to all the sets through the Internet; each set is in charge of data recovery of a collecting station in the set, all the sets download data at the same time through a wired LAN, and after data recovery of all the sets is completed, the data are summarized to a data center. The problem that an existing data recovery mode can consume time and plenty of manpower and material resources is solved. Each set recovers valid data in the corresponding collecting station within the blasting time period according to the triggering time mark, the data are pre-processed, and rapid analysis is achieved. The data recovery period is greatly shortened, the stability and high efficiency of a data transmission link are guaranteed, seismic data quality is effectively guaranteed, and the outdoor working efficiency is improved.

The application discloses a transformer DC resistance and on-load tap changer comprehensive tester, including: a central processing unit; a constant current source connected to the central processing unit and outputting a constant current signal; connected to the central processing unit and the constant current source, A function switching circuit that outputs a DC resistance test signal or an on-load tap-changer parameter test signal; a data acquisition circuit that is connected to the function switching circuit and performs data collection according to the DC resistance test signal or an on-load tap-changer parameter test signal; and a function switch The circuit is connected with the data acquisition circuit, and when the function switching circuit outputs the DC resistance test signal, the oil temperature data of the transformer under test is collected and sent to the wireless temperature measurement module of the data acquisition circuit; the central processing unit receives the data collected by the data acquisition circuit and performs Output the measurement results after processing. The scheme can realize the automatic switching test of the DC resistance of the transformer or the parameters of the on-load tap changer, and can accurately and real-time measure the DC resistance of the transformer.

The invention provides a pipeline fast video detection system. The system comprises a camera probe and a collection control host. The camera probe comprises a shell, a camera connected with the shell, and a circuit board arranged in the shell. The camera is a digital camera. Two ends of the digital camera are connected with the shell through a rotation shaft. A transmission motor is arranged on the rotation shaft. The circuit board comprises a drive circuit of the transmission motor, a microcontroller and a network transmission module. The camera probe also comprises a battery module. The battery module is mechanically connected with the shell. The collection control host is a mobile terminal with a detection module. According to the system, the integral structure is light; through adoption of the collection control host, the camera probe can be controlled wirelessly and remotely; the operation is convenient; and the site working efficiency is greatly improved.

The invention discloses a GNSS / INS / laser ranging combined positioning-based hand-held receiver and a measurement method. The hand-held receiver comprises: a shell and a range finding device arranged in the cavity of the shell, wherein the shell has a T-shaped shape and comprises a horizontal main body and a handle vertically tilting to the rear end, a sighting telescope is arranged above the main body in a parallel manner, and the range finding device comprises an inertial navigation module used for obtaining the attitude of a measurement point; a GNSS receiving module used for receiving a GNSS satellite signal; a Kalman filter used for obtaining the attitude and the coordinate information of the measurement point; a laser ranging module used for determining a distance between the measurement point and a target point; and a microprocessor used for obtaining the coordinate of the target point according to the attitude and the coordinate of the measurement point and the distance between the measurement point and the target point. The hand-held receiver and the measurement method allow the coordinate information of the target point to be obtained only through one-shot measurement, so the field working difficulty is reduced; and when the satellite signal is weak or cannot be received, the coordinate of the measurement point can be obtained through the inertial navigation, so the working efficiency is improved.

The invention discloses an operation whole process management and control system based on a mobile internet network, comprising: a mobile client, a server, a communication front-end processor and an unlocking device; the mobile client is provided with an unlocking unit; each field device is correspondingly provided with a smart lock with default locking, the smart lock is provided with an RFID chip, and the RFID chip is provided with a unique lock code recognizable by the unlocking device; the unlocking unit is connected to the unlocking device for receiving a lock code identified by the unlocking device, verifying whether the lock code is a lock code of the smart lock that needs to be unlocked in an operation item being executed in an electronic operation ticket, and sending an unlock operation instruction to the unlocking device after the verification is correct. The method and the system adopt the mobile client instead of a paper operation ticket, and enable the operator to can onlyperform operation according to the operation sequence of operation items in the electronic operation ticket through verifying of the operation sequence of the operation items through logic check andthe lock code, thereby effectively preventing the operation personnel from missing items, and risks caused by the operation of skipping items.

The invention discloses an anchoring connection method pulling-resistant device for a single pile vertical pulling-resistant static load test. The structure of the anchoring connection method pulling-resistant device differs from tradition, a form that other high-strength connection parts are detachably anchored with pulling rods directly or indirectly is adopted, a series of problems brought by an existing form of utilizing base seat main steel bar namely regular steel bar welding are avoided, the anchoring connection method pulling-resistant device is suitable for filling piles and preformedpiles, convenient and stable in connection, uniform in force bearing and is safe and reliable, improvement of the site work efficiency and cost saving are facilitated, the accuracy of the measurementresult is also guaranteed, furthermore, when both vertical compression resistance and vertical pulling-resistant static load test are required to perform on a same foundation pile, limit of sequential order also does not exist, and the anchoring connection method pulling-resistant device for the single pile vertical pulling-resistant static load test is convenient and capable of saving time.

The invention provides a combined rotation system assembly online dynamic balance detection system and method. The detection system comprises a dynamic balance analysis system, a data acquisition system, a detection sensor and a combined rotation system. A reflective marker is attached to a rotor. A rotation speed test sensor is installed on a non-rotating component, and is aligned to the reflective marker on the rotor. Vibration test sensors are mounted on respective bearing seats. The detection sensor is connected to the data acquisition system. The data acquisition system is connected to the dynamic balance analysis system. The detection method, by using a vector coordinate calculation method, performs dynamic balance detection on the combined rotation system, and configures a weight toeliminate the vibration caused by mutual response after the assembly of the rotor. The detection system and method can meet the requirements for convenient online dynamic balance operation, high accuracy and good balance effects, can be used for the balance of rotors in various industries such as machinery, aviation and electric power, contributes to the vibration reduction, the noise reduction and the wear reduction of the whole system, and prolongs the service life of a machine.

The invention discloses a calibration verification system and method for an automated verification device of an electric energy meter. The system comprises a communication module, a signal conditioning module, a measurement module and a control module; the communication module is used for being in communication with the to-be-measured automated verification device of the electric energy meter andreceiving measurement parameters output by the automated verification device of the electric energy meter; the signal conditioning module conducts signal conditioning according to the measurement parameters received by the communication module and outputs conditioning signals in a preset format; the measurement module is used for outputting a measurement result according to the conditioning signals; the control module is used for controlling the other modules in the system and outputting control signals to the to-be-measured automated verification device of the electric energy meter accordingto a preset rule; the system further comprises a wireless control module, and the wireless control module is used for sending a control instruction to the control module through a wireless communication unit of the communication module and displaying the received measurement result and measurement parameters.

The invention provides a handheld infrared thermal imaging mobile terminal device for substation inspection. A display screen is arranged on the panel of a shell. An imaging button, a scanning button, a determining button and a return button are installed under the display screen. A barcode scanning port is arranged at the upper part of the shell. An infrared thermal imaging camera is arranged on the reverse side of the shell. A power socket is arranged at the bottom of the shell. A barcode scanning module, an infrared thermal imaging camera module, an ARMA4 processor, an integrated circuit, a GPS, an antenna communication module and a power module are installed in the shell in sequence. By adoption of the handheld infrared thermal imaging mobile terminal device, the infrared imaging operation of substation equipment is becomes simpler and more convenient based on a mobile terminal application. The device is suitable for serving as the handheld infrared thermal imaging mobile terminal device for substation inspection.

The invention discloses a movable type detachable three-dimensional rotating base frame. The movable type lifting three-dimensional rotating base frame comprises a cloud platform subsystem, a supporting subsystem, a lifting subsystem, an equipment cabinet subsystem and an accessory subsystem. Once machine head equipment is installed, the cloud platform subsystem can be used for rapidly adjusting the rotation angle, the pitch angle and the attitude angle of the machine head equipment. The supporting subsystem guarantees stability, and meanwhile trundles with the self-locking function can achieve movement of the entire equipment. The lifting subsystem can change the distance from the machine head equipment to the ground in real time according to needs. The equipment cabinet subsystem integrates a power supply and related equipment needed for work and provides corresponding protection. The accessory subsystem can be selectively provided with related auxiliary equipment. The movable type lifting three-dimensional rotating base frame uses a modularized design thought, brings convenience to carrying and installation, adapts to the tedious changes in practical work, greatly relieves the labor intensity of field personnel, and improves working efficiency.

The invention relates to a portable step-by-step water sample suction filtration system. The system comprises two filters, a guide pipe, a suction filtration bottle, a portable box, a first suck-press latex tube, a second suck-press latex tube and a third suck-press latex tube, wherein a corresponding water system micropore filtration membrane is arranged in each filter; the two filters are detachably communicated with upper and lower ports of the guide pipe in a sealed manner respectively; a vacuum pump and a storage battery for supplying electric energy to the vacuum pump through a power switch are placed in the portable box; one end of the first suck-press latex tube and one end of the second suck-press latex tube are detachably communicated with the guide pipe and the suction filtration bottle in a sealed manner, the other ends of the first suck-press latex tube and the second suck-press latex tube are joined and connected to the end part of the third suck-press latex tube communicated with the vacuum pump. By means of the suction filtration system, particle suspended matters / microorganisms with different particle sizes or pore sizes in a water sample can be separated on the field site, following research is met, and besides, the system can be used for collecting water samples filtered step by step.

The present invention provides a low-power consumption wearable device facing the construction site management. The low-power consumption wearable device comprises a main control chip used for operating an Android-based system, a positioning chip used for positioning, a data communication chip used for connecting a far-end server, a voice communication chip used for voice communication via a mobile communication network, a humiture sensor used for measuring the environment temperature and humidity, a health management chipset used for obtaining the human body parameters of the users, a help calling chip used for sending out the help calling signals, a camera and an image processing chip which are used for obtaining the real-time video data and a transmission control chip used for sending the transmission control instructions to the main control chip.

The invention discloses a device for measuring direct-current resistance and parameters of a load switch of a transformer. The device for measuring the direct-current resistance and the parameters of the load switch of the transformer comprises a central processing unit, a constant current source, a function switching circuit and a data collecting circuit, wherein the central processing unit is used for generating testing orders, the constant current source is connected with the central processing unit, and outputs constant current signals according to the orders generated by the central processing unit, the function switching circuit is connected with the central processing unit and the constant current source, receives the constant current signals output by the constant current source, and outputs testing signals according to the orders generated by the central processing unit, the data collecting circuit is connected with the function switching circuit, and carries out data collection according to the testing signals output by the function switching circuit, and the central processing unit is further connected with the data collecting circuit, receives data collected by the data collecting circuit, carries out processing on the received data, and outputs measurement results. The device for measuring the direct-current resistance and the parameters of the load switch of the transformer can simultaneously carry out a test of the direct-current resistance of the transformer and a test of the parameters of the load tapping switch of the transformer.

The present invention discloses a high precision multi-transformation ratio voltage transformer comparison device. The device comprises a primary winding, a secondary winding and an iron core. The iron core is an R-shaped iron core; the primary winding and the secondary winding are wound on the same side of the iron core; the primary winding is wound outside the secondary winding; the primary winding is connected to a primary side incoming line connector; on the secondary winding, tap connection lines are drawn out from positions corresponding to transformation ratio intervals; and each tap connection line is connected to a corresponding secondary side incoming line connector. According to the present invention, efficiency and accuracy of field error checking of voltage transformers are improved, thereby reducing troubleshooting time in work and improving fieldwork efficiency. The device can also be used in transformation ratio measurement calibration assessment of a transformer transformation ratio tester to inspect the accuracy and stability of the transformer transformation ratio tester in testing an actual transformation ratio.

The invention discloses a portable concentration device for quantitative samples of planktons. The portable concentration device comprises a bracket part and a siphon part, wherein the bracket part consists of a horizontal bracket and vertical brackets; a ring-shaped pipe is welded at the upper end of each vertical bracket, and the vertical brackets are fixed on the horizontal bracket at certain intervals by using fixed bolts; the siphon part comprises latex tubes, flow-speed adjusters, air bags and spiral water stopping clamps; the latex tubes are connected with the flow-speed adjusters and penetrate through the flow-speed adjusters; the air bags are connected to the latex tubes; the other ends of the air bags are connected with the latex tubes; the spiral water stopping clamps are placed on the latex tubes; the latex tubes are fixed on the horizontal bracket and the vertical brackets by binding belts. The portable concentration device disclosed by the invention has the advantages that the structure is simple, the cost is low, the carry is portable, the assembly is fast, the use is convenient, high-efficiency and accurate effects are achieved, and the device can be effectively applicable to the concentration quantification of fixed samples in hydrobiology; the carrying amount of the field quantitative samples can be greatly reduced and the working efficiency is improved.