62results about How to "Easy to test on site" patented technology

The invention discloses a charged test method for a current transformer and application thereof. The method comprises the following steps of: serially connecting a charged analyzer with a secondary low-voltage loop to serve as a test loop through two switches of a secondary terminal box on a secondary side loop of the current transformer under the condition of operating the charged current transformer; injecting a different-frequency test signal generated by the analyzer into the test loop through the analyzer, and realizing a charged error test and a charged frequency response test by measuring and calculating loop key parameters under an injected frequency signal; and changing a method for secondary load impedance to change excitation conditions through the analyzer, and measuring load change influence to test a charged exciting characteristic curve. Compared with the prior art, the method has the advantages that: the charged test of the current transformer can be performed without contact of primary voltage, an upward current source, a standard transformer or a load box, the safety and reliability of an uninterrupted power test are guaranteed, the equipment is high in integration, portable and light, and the method is favorable for on-site and laboratory tests and long-term online monitoring.

The invention provides a method for determining an indicator diagram of electrical parameters of a rod-pumped well and belongs to the technical field of oil production of oil fields. The method aims at achieving convenient and practical measurement of the indicator diagram of the electrical parameters of the rod-pumped well on site. The method is characterized in that top dead center moments and bottom dead center moments are determined periodically, active powers of electrical parameters of up strokes and down strokes of the rod-pumped well are processed in a decomposition mode, and input end active power of the up strokes and the down strokes is obtained respectively and are calculated and converted into wellhead loading force; adjustment is conducted through balance blocks for operation balance of a pumping unit, actually measured data are used for further correcting the weights of the crank balance blocks of the oil pumping unit or retrieving the weights of the crank balance blocks after adjustment, actually measured active power is converted into wellhead loading force F<upper force i>, wellhead loading force F<lower force i> and superposed wellhead loading force F<upper and lower force i>, the wellhead loading force F<upper force i>, the wellhead loading force F<lower force i> and the superposed wellhead loading force F<upper and lower force i> are calculated, superposed and converted into wellhead loading force, and the indicator diagram of trends of the electrical parameters is determined before and after superposition with the crank balance blocks. According to the method, on-site testing is convenient and practical, and online automatic measurement is achieved.

The invention relates to a device and a method for testing pressure of an intelligent substation, and belongs to the technical field of intelligent substations. The device comprises an upper computer, a CPU (central processing unit), an FPGA (field programmable gate array) and an Ethernet physical layer circuit connected in sequence. A testing environment meeting requirements of an IEC (international electro-technical commission) 6185O specification system is provided, normal sampling values (SV) and GOOSE data can be output, normal system running or grid fault can be simulated, background interference flow data in an SV format and background interference flow data in a GOOSE format can also be output, and further, messages such as IP(internet protocol), ARP(address resolution protocol), ICMP(internet control message protocol) and SNMP(simple network management protocol) can be output to form a general background flow. By filtering and analyzing the SV message or the GOOSE message or the MMS message with the specific APPID, potential safety hazards existing in different load-pressure backgrounds of the specific IED device in the network or network switching devices of the whole process level are found, and safety running level of the intelligent substation is increased.

The invention relates to an adjustable integrated high-voltage grid electrode pulse modulator. An improved design is conducted on a filament high potential power supply circuit, a positive biased high potential power supply circuit, a negative biased high potential power supply circuit and a grid electrode pulse modulator circuit, and the high dense integration of the three high potential power supply circuits and the grid electrode pulse modulator circuit is achieved; a feedback circuit of a high potential power supply is improved, a magnetism feedback high voltage isolation sampling technology is adopted, and respectively independent adjustment to the high potential power supply output voltage values is achieved at the low voltage side; a high potential integrated failure detecting circuit is added, and the high potential power supply multi-circuit failures are integrated into one circuit signal; a pulse driving circuit is improved, and a dual-level denoising circuit is added; a grid electrode floating plate modulating circuit is improved, and an fire-making resistance protection circuit protection modulator and a traveling wave tube are added; a high-voltage transformer structure used for the modulator is improved, the size is reduced, and high-voltage isolation is achieved.

The invention relates to an adjustment method for operation balance of a rod-pumped well and belongs to the technical field of oil production of oil fields. The adjustment method aims at achieving convenient and practical measurement of balance adjustment of the rod-pumped well on site. The adjustment method is characterized in that an active power average value and an upstroke and downstroke net torque superposition value P<up and down> are obtained; an annulus working fluid level HY is obtained according to P<up and down>; according to an upstroke active power average value <up> and a downstroke active power average value <down>, whether balance blocks need to be moved and adjusted and whether the moving directions of the balance blocks need to be adjusted are judged; if adjustment is needed, the adjustment moving amount of the balance blocks of a pumping unit is determined, and the balance blocks of the pumping unit are adjusted. By the adoption of the power method, the relation is established between the adjustment amount of the balance blocks and the variation of a working fluid level HY actually measured when balance adjustment is needed and a working fluid level HY<before> obtained when balance adjustment is not needed, stored work condition information is perfected according to the model as for the same rod-pumped well, the stored information can be freely called during testing, actually measured data are used for correcting working condition parameters, and the method used for conducting practical measurement of balance adjustment of the rod-pumped well and conducting adjustment on site after measurement is achieved.

The invention discloses a marine platform monitoring system, and the system comprises a monitoring host, a host node, and a plurality of onsite monitoring terminals. Each onsite monitoring terminal comprises a data collection node and an acceleration sensor corresponding to the data collection node. The monitoring terminals are absorbed at a plurality of measurement points of a detected marine platform, and complete the collection, storage and wireless transmission of the acceleration data of the marine platform. The monitoring host and the collection nodes achieve the real-time monitoring and analysis of a collection process through a wireless network. Meanwhile, the system achieve the marine platform detection method which comprises a multi-node collection synchronization mechanism and wireless data compressed sensing and takes the data on-orbit calculation which takes the collection data model matching and effective data classification storage as a main part through employing the high-speed and parallel characteristics of an FPGA. The system solves a problem of synchronization between collection nodes and a problem of the power consumption and bandwidth of multi-node wireless transmission, improves the practicality and reliability, reduces the data processing workload, and improves the work efficiency.

The invention is a hydraulic power pile driver with hammer penetration pile test function. An elastic deformation detection device and a penetration detection device of a soil-pile system are arranged on a basis of a jacking hydraulic power pile driver; and a stroke adjuster is improved so as to provide the impact energy, the penetration and the elastic deformation of the soil-pile system for a calculating device respectively; thus not only the impact force of each hammer can be calculated and displayed in time to realize visibility of the impact force in a hammering process, which is more convenient and more intuitive than the visibility of the pile driving force of a conventional hydraulic power pile driver, but also a high strain dynamic test capable of replacing a static loading test can be performed after several resting periods when the hammering is stopped; therefore, the construction progress of the pile foundation is quickened, and a great amount of investment is saved for a proprietor.

The invention relates to a method for indirectly measuring dynamic flexibility of a corner in the technical field of vibration test. The method comprises the following steps that: two more measuring points are arranged close to a point to be measured, and the three points are collinear and distributed in equal distance; a harmonic concentrated moment is replaced by a harmonic concentrated force system to express the corner into a linear combination of translational displacement based on the equivalence principle of the harmonic concentrated force system and a one-order three-point- numerical differentiation formula of the corner; and finally, the dynamic flexibility from the concentrated moment to the corner is expressed by the dynamic flexibility linearity from concentrated force to the translational displacement, and the corner flexibility can be indirectly measured by measuring the dynamic flexibility from the concentrated force to the translational displacement. The invention is an indirect measuring method which can construct the dynamic flexibility of the corner only by measuring a plurality of dynamic flexibilities from the concentrated force to the translational displacement by adopting a hamper test or a frequency sweep test without adding a mass block for the structure, applying the concentrated moment, nor even applying the balanced concentrated force system .

The invention provides a detection method of synthetic drug components in food. The method comprises the following steps: (1) classifying and detecting standard samples of synthetic drug components to be detected and establishing a standard database; (2) detecting a food sample; and (3) automatically comparing a detection result and the standard database by an instrument and drawing a conclusion. Analysis is finished within 1 min. The method provided by the invention requires no professional training, has advantages of portable instrument, simple operational program, low cost of consumables and fast detection speed, and can be used as a method for rapid batch coarse-screening of synthetic drug components in a health product for base-level health products supervisory authorities at a law enforcement scene or for special testing agencies at a lab.

The invention discloses a method for testing response characteristic of a 690V wind turbine generator to transient change of a power grid, and belongs to the technical field of methods for testing transient response characteristics of wind turbine generator power grids. The method is particularly used for testing the response characteristic of a wind turbine generator at a wind turbine generator set end (with the voltage of 690V) when the power grid voltage, frequency and power quality of the wind turbine generator are changed transiently. By the aid of the method, testing operation can be carried out at the wind turbine generator set end, the method has the remarkable advantages of simplicity in connection and convenience in field testing, the running condition of the wind turbine generator can be directly tested at the wind turbine generator end, and running characteristics of the wind turbine generator can be effectively reflected. The method has profound social and market benefits and a profound application prospect.

The invention relates to a device and method for testing a water-based power rodless pumping unit. The device comprises a machine box, a data acquisition card, a mainboard, a power source, a disk array and a touch screen, wherein the data acquisition card, the mainboard, the power source and the disk array are installed inside the machine box and are tightly attached to the bottom of the machine box, and the touch screen is installed on the outer surface of the machine box. The data acquisition card is used for collecting operating data of the water-based power rodless pumping unit and transmitting the collected operating data to the mainboard. The mainboard is used for conducting fault diagnosis and analysis on the received operating data of the water-based power rodless pumping unit through a fractal box counting method. The disk array is used for storing the operating data of the water-based power rodless pumping unit and fault diagnosis and analysis results output by the mainboard. The touch screen is used for displaying the operating data of the water-based power rodless pumping unit and the fault diagnosis and analysis results output by the mainboard. By means of the device and method for testing the water-based power rodless pumping unit, condition monitoring and fault diagnosis are conducted on the water-based power rodless pumping unit, and thus safety production work of the petroleum industry can be better developed.

The invention discloses a tunnel initial support stability judging and prediction method based on an electromagnetic radiation. The tunnel initial support stability judging and prediction method includes the following steps that: S1, as for dangerous section (includes not-to-be-ring section and be-ring section of the initial support) possible to be instable failure of the initial support, monitoring sections are circularly arranged at certain intervals, and electromagnetic radiation monitoring sites are arranged at representative positions of the monitoring sections; and S2, portable electromagnetic radiation monitor is adopted to monitor the intensity of the electromagnetic radiation on the surface of the tunnel initial support of each monitoring site at different period, and normal tunnel deformation monitoring is simultaneously conducted at each monitoring site. According to the tunnel initial support stability judging and prediction method, any equipment does not need to be pre-buried, test in the field is convenient, construction is basically not interfered, testing in a wider range can be conducted, and the method is suitable for being widely adopted in a tunnel project undercomplex geological conditions; and the monitoring results can reflect the relative small and large and changing trend of surrounding rock pressures, and key part of initial support transformation anddeformation, and the basic need of stability analyzing and estimating of the initial support can be met.

The invention relates to a surface emissivity online testing device and method. The device comprises a film with calibrated emissivity, a heating unit, a sensor module and a control processing unit, wherein the film is attached to a to-be-measured local surface of a to-be-measured target object during testing, the heating unit is used for increasing the surface temperature of the tested target object during testing, the sensor module is used for synchronously measuring infrared radiation of a surface of the film and a to-be-measured local surface of the measured target object, converting the infrared radiation into the temperature information and acquiring the temperature information of the sensor module, and the control processing unit is connected with the heating unit and the sensor module, and is used for supplying power and outputting data, and obtaining emissivity of the to-be-measured local surface on the measured target object according to the obtained temperature information.Compared with the prior art, the device has advantages of short measurement time, no need of slicing the sample, simple structure, low cost, easiness in field test, and is suitable for on-line rapid measurement of the surface emissivity of various materials.

The invention relates to a muffler allowing quick replacement of a mesh filter. The muffler comprises a barrel, a flange end cover, a flange body, the mesh filter, an air outlet pipe and an air inletpipe, wherein the flange body and the barrel are fixedly connected, the air outlet pipe and the air inlet pipe are mounted on the barrel, the mesh filter is mounted in the flange body, and the flangeend cover is connected with the flange body. The mesh filter can be replaced and is convenient to mount, and diversification of products and site testing and debugging of new products are facilitated.Small-scale production is relatively convenient.

The invention relates to an error calibration method of a resistance wood moisture meter. The method adopts the mode that the standard resistance is measured and the instruction is read. The method comprises the following steps: a wood moisture meter to be calibrated is placed in the calibration environment for more than one hour; the wood moisture meter to be calibrated is switched on to preheat; according to the wood moisture resistance table, a standard resistance value Un is selected by means of the standard resistor; a tree species which is more suitable for the wood moisture meter to be calibrated is selected for the wood moisture meter; then the selected standard resistance value is detected, an indicated value Ux is read; the selected tree species and the indicated value Ux are recorded; the absolute error Delta is calculated according to a formula, namely Delta=Ux-Un. By adopting the method, the testing method becomes simple and convenient, the testing device is convenient to carry and the in-situ test can be performed conveniently, thus great convenience can be brought for the consumer.

The invention provides a rock triaxial test pressure cabin and a test device thereof. The rock triaxial test pressure cabin comprises an upper end cover, a lower end cover and an axial bearing cylinder, wherein facing ends of the upper end cover and the lower end cover are provided with threads; two ends of the axial bearing cylinder are in threaded connection with the upper end cover and the lower end cover respectively; through holes with the same axis are formed in positions at the axis of the upper end cover and the axis of the lower end cover; an upper pressing rod and a lower pressing rod are arranged in the two through holes respectively; a pressure bearing pipe is arranged on the inner sides of the upper end cover and the lower end cover; an oil-liquid isolation pipe is arranged inthe pressure bearing pipe; flanges are arranged at both ends of the oil-liquid isolation pipe; a supporting pipe is inserted in the flanges; the upper end cover is provided with an oil inlet and an air outlet; a hexagonal socket cap screw is arranged in the air outlet; the oil inlet is connected with an oil inlet oiling connector; and the oil inlet and the air outlet are both connected between the supporting pipe and the pressure bearing pipe. The rock triaxial test pressure cabin and the test device thereof provided by the invention are simple in operation and easy to clean.