2075 results about "Testing equipment" patented technology

The invention relates to a lubricating grease porous material permeability test device, and relates to the technical field of material performance analysis, the device comprises a placing table for placing a sample, the placing table is provided with a driving device and a test seat, and the test seat is provided with a test cavity; the driving device is used for driving the testing seat to move in the direction close to the placing table so as to contain the sample into the testing cavity; a sensing device used for sensing lubricating grease below the sample is arranged on the placing table, a sealing device used for sealing the peripheral wall of the sample is arranged in the testing cavity, a conveying device used for conveying the lubricating grease to the position above the testing cavity is arranged on the placing table, and a pressurizing device used for applying pressure to the lubricating grease above the sample is arranged on the placing table. The multiple steps of sample clamping, sealing, grease injection, pressurization and detection are integrated into a coherent automatic process, the test efficiency is remarkably improved, the consistency of test conditions is ensured through mechanical positioning and automatic control, and high repeatability and high reliability of test results are ensured.

The invention relates to the technical field of lithium batteries, in particular to a lithium battery formation and capacity grading test health monitoring and performance diagnosis method and system. Comprising the following steps: acquiring voltage data, and identifying a target single cell according to the voltage data; a bypass current channel is gradually established for the target single battery cell, so that the bypass current is gradually increased from zero or an initial value according to the change speed of the bypass current; acquiring current change data of the bypass current channel in real time during the establishment period of the bypass current channel, and adjusting the establishment slope and / or the segmented switching time sequence of the bypass current according to the current change data; and when the bypass equalization operation is finished, gradually reducing the bypass current according to the corrected bypass current change speed until the bypass current channel is removed. The problems that in the lithium battery formation and capacity grading test process in the prior art, potential accumulative damage is caused by bypass equalization operation, and transient influences are difficult to accurately capture and evaluate by existing test equipment are solved.

According to the noise vibration test equipment and the rotating shuttle calibration method, a rotating shuttle to be tested is installed on a rotating shuttle shaft driven by a driving device to rotate, an outer shuttle frame is fixed through a rotating shuttle positioning device, and the assembly and operation states of the rotating shuttle in a sewing machine are truly simulated; the noise and vibration parameters during high-speed operation are collected in real time by means of the noise and vibration detector, the noise and vibration performance of the rotating shuttle can be quantitatively evaluated before the whole machine is assembled, and interference of other parts of the whole machine is avoided. According to the method, the unqualified rotating shuttle can be recognized and debugged in advance, the situation that the noise and vibration of the whole machine exceed the standard due to the individual gap difference of the rotating shuttle is effectively prevented, front screening and grading management of the rotating shuttle quality are achieved, and the one-time assembly yield of the whole machine is remarkably improved; meanwhile, complex debugging after the whole machine is assembled is omitted, the rework, replacement and labor cost is greatly reduced, and the production efficiency and the product consistency are improved.

The invention provides equipment and a method for testing the emission amount of harmful gas in a tunnel, and relates to the technical field of tunnel construction. Comprising a sleeve, a gas parameter testing unit installed on the sleeve, a water tank communicated with the interior of the sleeve and a gassing module installed on the water tank, and the gassing module is connected with the gas parameter testing unit; one end of the sleeve can be dynamically sealed with the drill rod, and the other end of the sleeve is of an opening structure; the gassing module is used for separating out gas in water and conveying the gas to the gas parameter testing unit; and the gas parameter testing unit is used for detecting the concentration and flow velocity of harmful gas in the sleeve and the concentration of harmful gas separated out from water. A gas parameter testing unit is arranged to monitor the data change of gas gushing out of the drill hole in real time; the gassing module can separate out gas in water in real time and convey the gas to the gas parameter testing unit to measure the concentration of dissolvable gas, so that the calculation of the emission amount is more comprehensive and accurate.

The invention discloses a test device for detecting the pressure-bearing performance of a fire hose, and relates to the technical field of fire hose pressure-bearing detection.The test device comprises a main frame, the outer wall of one side of the main frame is fixedly connected with a side frame, and the top of the main frame is provided with a butt joint pipe used for fixedly and hermetically connecting a hose body; a fixing plate is arranged on the top of the main frame, and the butt joint pipe is fixedly connected with the fixing plate. According to the device, when a worker bends the water hose body to a certain angle and then stops bending, through the self-locking performance between a screw rod and a threaded sleeve, it can be guaranteed that the two fixing plates do not displace in the subsequent water hose body stamping process, and then it is guaranteed that the water hose body is always located at the set bending angle for pressure bearing detection; and the problems of unstable detection conditions and data deviation caused by the bending angle change due to the displacement of the fixed plate are avoided.

The invention relates to the field of electrical measurement and electronic test equipment, and discloses a charger test method and system. The method comprises the following steps: acquiring a parameter configuration set and a baseline condition, and generating a probe and interface configuration structure under a four-wire system measurement site, protocol abstraction card mapping and shunting and Hall channel combination condition; performing unified time reference binding and event labeling table initialization, locking a time base by a real-time clock of the microcontroller unit, broadcasting the time base to a channel and a controller, executing temperature rise constrained load arrangement and synchronous acquisition, and generating an acquisition preparation packet; and electrical transient and thermal feature extraction and electrical decoupling fusion are executed, and consistency judgment, threshold comparison and report generation are completed. According to the invention, by establishing a unified time base architecture of electricity and heat dual-domain synchronization, multi-channel consistent acquisition and real-time self-diagnosis are realized, the precision, traceability and automation level of a charger test process are improved, and the method is suitable for comprehensive test and evaluation of various types of electronic equipment.

A new energy wind power blade detection device disclosed by the present invention comprises a base and a first vertical plate, the first vertical plate is installed at the left end of the upper surface of the base, a reinforcing rib is installed between the right side wall of the first vertical plate and the upper surface of the base to improve the stability of the first vertical plate, and a first rotating shaft is installed at the center position of the top of the first vertical plate through a bearing. A mounting seat is mounted on the outer wall of the first rotating shaft, a blade is locked on the right side wall of the mounting seat through a bolt, the first rotating shaft provides a front-back swing condition for the blade, so that the blade can be subjected to a transverse swing test, a swing mechanism is mounted in the middle of the upper surface of the base, and a second vertical plate is mounted at the right end of the upper surface of the base. Test systems do not need to be independently configured for blades of different specifications, the fatigue test requirements of various blades can be flexibly met only by adjusting the positions of the balancing weights, multiple purposes of one machine are truly achieved, the occupied space of multiple sets of traditional test equipment is greatly reduced, and meanwhile the equipment purchase, maintenance and management cost is reduced.

The invention relates to the technical field of semiconductor test equipment, in particular to a full-automatic high-precision probe station, which utilizes multi-physics field coupling sensing and compensation to remarkably improve the positioning precision: by comprehensively collecting multi-physics field data such as a temperature field and a stress field and combining a coupling algorithm to optimize a compensation strategy, multi-factor interference is effectively counteracted, and the accuracy of the probe station is improved. The positioning repetition precision can reach + / -0.05 [mu] m, and the test requirement of the advanced semiconductor technology is met; a dynamic three-dimensional modeling technology and dynamic adaptability enhancement are achieved, a dynamic three-dimensional modeling system with the size affected by multi-physical field data can update the form of a test target in real time, test deviation caused by target deviation or surface fluctuation is avoided, and the adaptability of equipment to a complex test scene is improved. The automation degree is high, the testing efficiency is improved, the whole process of data acquisition, modeling, compensation and testing can be completed without manual intervention, the calibration process is simplified, the testing period is shortened, and the method is suitable for batch detection scenes.

The present invention relates to the technical field of compressor performance testing and testing equipment manufacturing. Disclosed are a system volume-adjustable device and method for evaluating the starting characteristic of a refrigeration compressor. The evaluation device comprises a sample under test, a test refrigeration system and a test control system. By means of controlling a high-pressure-end volume regulator, a low-pressure-end volume regulator and a condensing coil, the evaluation device precisely adjusts a refrigeration system volume, so as to match the test requirements of different compressors for the refrigeration system volume, and provide a volume-adjustable substitute refrigeration system for starting characteristic testing. The present invention synchronously collects transient characteristic parameters such as intake and exhaust pressure, inter-phase voltage, phase line current and housing vibration acceleration at the instant of a compressor start, and non-transient characteristic parameters such as the in-housing temperature of a variable-frequency driver, the temperature of a power module and the temperature of a rectifier bridge, so as to accurately measure and evaluate the starting characteristics of the refrigeration compressor in specific environments.

The invention discloses a spring fatigue test device, which belongs to the technical field of mechanical test equipment and comprises a rack, a data acquisition module, an environment simulation integrated cabin, a multi-axis loading module and a micro-motion simulation base. The rack provides a supporting and mounting space for the whole device. Through cooperative work of the main loading unit, the first auxiliary loading unit and the second auxiliary loading unit, axial loads, torsion loads and lateral loads can be applied to the spring at the same time or according to a preset phase relation in a test period, and the tension-compression-torsion-bending composite stress state of the spring under the actual working condition is accurately reproduced. Compared with a traditional uniaxial test, the result is closer to engineering practice, and the authenticity and the severity of the test are greatly improved.

The utility model discloses a multi-blade type wafer push broach, which relates to the technical field of parts of push-pull force test equipment and comprises a mounting base, a multi-blade type push broach switching component is fixedly mounted at one end of the mounting base, and a magnetic push component is fixedly mounted at the other end of the mounting base. The multi-cutter type push broach switching assembly comprises a first mounting frame, a rotating shaft, a rotating gear, a driving gear, a driving assembly and a plurality of push broach bodies, one end of the rotating shaft is rotationally connected to one end of the first mounting frame, the other end of the rotating shaft is fixedly connected to the center of the rotating gear, and the rotating gear is meshed with the driving gear. According to the multi-blade type wafer push-type broach, the driving assembly and the rotating gear in the magnetic attraction pushing assembly are matched with each other to complete the switching operation of the push-type broach main body, so that detection equipment provided with the multi-blade type wafer push-type broach can test wafers with different sizes and material hardness by replacing the push-type broach, and the cost of test equipment of test manufacturers is reduced.

The invention provides an automatic test system and method for a third-party high-power repeater, and relates to the technical field of automatic test equipment, and the system comprises an integrated reconfigurable passive link box, a control host, a vector signal generator and a vector signal analyzer. The integrated reconfigurable passive link box comprises a box body, a radio frequency switch matrix network, an embedded function network, a control port, an input port, an output port, an uplink interface and a downlink interface. The radio frequency switch matrix network and the embedded function network are arranged in the box body. The input port, the output port, the uplink interface and the downlink interface are arranged on the surface of the box body. The vector signal generator is connected with the input port, the vector signal analyzer is connected with the output port, and a third-party high-power repeater to be tested is arranged between the uplink interface and the downlink interface. According to the invention, the radio frequency switch matrix network and the embedded function network are packaged in the integrated reconfigurable passive link box, and the control host is utilized to carry out automatic testing on the third-party high-power repeater according to the preset process, so that frequent operation processes are avoided, and damage to instruments is reduced.

The utility model discloses a cleaning head of a chip test socket cleaning device. The cleaning head comprises a cleaning piece main body; the cleaning part is detachably connected with the cleaning part main body, the cleaning part comprises a brush head, a brush head rod and a threaded rod, one end of the brush head rod is connected with the brush head, the other end of the brush head rod is connected with the threaded rod, the threaded rod is in threaded connection with the cleaning part main body, and the brush head is connected with the brush head rod. The cleaning piece is provided with a channel penetrating through the brush head, the brush head rod and the threaded rod, and the channel is used for allowing gas to flow. According to the cleaning head of the chip testing seat cleaning device, when the cleaning head of the chip testing seat cleaning device needs to be replaced, the cleaning head is taken down, meanwhile, the cleaning piece is taken down from the cleaning piece body in a rotating mode, the cleaning piece body does not need to be replaced, and replacement can be completed only by replacing a new cleaning piece. The cleaning piece body can be matched with cleaning pieces of various specifications to meet the cleaning requirement, only the cleaning piece part needs to be replaced during replacement, and therefore the cleaning cost is reduced.

The invention relates to the technical field of salt spray corrosion tests, in particular to cable assembly salt spray corrosion resistance testing equipment which comprises a box body and a cable clamping seat arranged in the box body. When the cable assembly salt spray corrosion resistance testing equipment is used, a driving mechanism drives a rotating frame to rotate around a center shaft of the rotating frame, and a plurality of salt spray nozzles are driven to rotate synchronously; all-around and dead-corner-free wrapping type spraying from top to bottom and from outside to inside is realized, and each surface of a sample can be uniformly covered by salt mist; the deflection nozzle is driven by the swing mechanism to perform periodic reciprocating swing, and swing airflow can effectively blow the surface of a cable sample, so that a heavy liquid film on the surface of the sample can be thinned and disturbed, unreal flowing caused by the gravity action is prevented, and the state of the liquid film is closer to the effect of wind and rain in the natural environment; and a weak dead angle possibly existing in spraying of the enhanced rotating frame can be supplemented, so that the distribution uniformity of salt mist and the severity of testing are further improved, and the authenticity and the accuracy of environment simulation are remarkably improved.

The utility model belongs to the technical field of valve pressure testing equipment, in particular to a valve pressure testing machine, which comprises an equipment main body, a control panel, a first motor and a water storage tank, the control panel is arranged at the side end of the equipment main body, the first motor is arranged at the side end of the equipment main body, and the water storage tank is arranged at the same side of the equipment main body. According to the utility model, the sealing test mechanism, the screw rod, the ball movable cover, the main shaft position control disc and the limiting rod are arranged, a valve structure to be tested is placed between the sealing test mechanism and the ball movable cover after the water storage tank is filled with water, the second motor is started at the moment, and the second motor drives the ball movable cover to move while driving the screw rod to rotate; when a valve structure is clamped at the side end of the sealing test mechanism, gas is injected into the valve through the gas injection port, at the moment, the first motor is started and drives the main shaft position control disc to rotate through the driving gear, and after the sealing test mechanism sinks underwater, an operator judges the sealing performance of the valve by observing the floating condition of bubbles.

The invention relates to the technical field of household appliance testing, and discloses a dryer testing system which comprises a tested device and a circulating air supply unit, the circulating air supply unit comprises an air duct, and the two ends of the air duct are detachably matched with an air outlet and an air inlet of the tested device respectively, so that a closed loop for airflow circulation testing is formed. An airflow processing module and a detection module are arranged in the air duct, the airflow processing module is used for adjusting the temperature, humidity and air pressure of flowing airflow, and the detection module is used for obtaining dry and wet bulb temperature and air speed parameters of the airflow at the air outlet and the air inlet, so that the drying speed and efficiency of the tested equipment are measured through an enthalpy difference method. According to the system, waste heat carried by exhausted gas is recycled firstly, brand new air does not need to be heated from the room temperature state, and therefore energy consumption in the testing process is remarkably reduced.

The utility model relates to the technical field of air pressing equipment, in particular to air pressing equipment integrating an air dryer and an air compressor into a skid, which comprises a skid seat, an air compressor, a refrigeration type compressed air dryer, a compressed air filter, an air-water separator group and a double compressed air filter group. The utility model focuses on the innovation of the air pressing equipment, and provides the air pressing equipment which integrates the air dryer and the air compressor into the skid for solving the problems of dispersion, low efficiency, poor precision and the like of the traditional air dryer and the traditional pressing equipment. The air compressor supplies air, the refrigeration type compressed air dryer dehumidifies and then is precisely regulated and controlled through the PLC in combination with the high-precision pressure controller, and the device has the outstanding advantages of integration, high efficiency, precise pressure control, safety, reliability, wide application and the like, and can be widely applied to air pressure testing requirements of industries such as petrochemical engineering, natural gas, pressure pipelines and pressure containers.

The invention discloses a portable switch cabinet temperature rise on-line monitoring system, and relates to the technical field of power equipment detection, and the system comprises a portable high-frequency large-current power module which is used for generating a test current and applying the test current to a switch cabinet; the multi-channel temperature acquisition module is used for generating a measuring point temperature data sequence and an environment temperature data sequence; the initial temperature rise calculation module is used for calculating and generating an initial actually measured temperature rise data sequence; the parameter identification module is used for resolving a group of dynamic model parameters and determining a predicted steady-state temperature rise value under the test current; the temperature rise correction module is used for calculating and generating a final steady-state temperature rise value under a rated working condition; and the state judgment module is used for judging the temperature rise state of the switch cabinet. By adopting a high-frequency switching power supply technology and a third-generation semiconductor power device, the size and the weight of test equipment are remarkably reduced, and the problems that a traditional device is heavy and poor in mobility are solved.

The invention discloses a bidirectional and horizontal action hydraulic capstan test device and method, and belongs to the technical field of test bench testing and test equipment. The device comprises a supporting seat, a hydraulic capstan and a load oil cylinder, the load oil cylinder adopts a unique structure that a piston rod is fixed and a cylinder body can move bidirectionally, and two ends of the cylinder body are connected with the hydraulic capstan winding drum through two steel wire ropes with opposite winding directions. The core is a set of hydraulic loop integrating an electric proportional overflow valve and four one-way valves: when a cylinder body is pulled, oil in a pressed cavity needs to return through the electric proportional overflow valve, and the simulation load force can be accurately controlled by setting the pressure of the valve through an electric signal; meanwhile, the loop can automatically supplement oil to the negative pressure cavity, vacuum is prevented, and stable load is ensured. The problem that in the prior art, a variable load cannot be provided for a bidirectional and horizontal acting hydraulic capstan is solved, precise and stable simulation of a single oil cylinder on a bidirectional load is achieved, and the hydraulic capstan load simulation device has the advantages of being compact in structure, precise in control, safe and reliable.

The utility model discloses an in-situ synchrotron radiation device for testing a core element of a thin film capacitor, and belongs to in-situ synchrotron radiation testing equipment. In order to achieve in-situ synchrotron radiation testing of a core element of the thin-film capacitor, the core element is installed in a containing cavity of a shell, a temperature control mechanism is installed on the shell and adjusts the temperature of the containing cavity of the shell, and a high-voltage polarization power source is connected with the two ends of the core element to apply voltage. The pressure regulating mechanism comprises two pressure regulating plates and a pressure regulating driving assembly, the two pressure regulating plates are respectively mounted on two sides of the core element, and the pressure regulating driving assembly is connected with the two pressure regulating plates and regulates the distance between the two pressure regulating plates; the synchrotron radiation light source and the signal receiving plate are respectively arranged at two sides of the shell, two side walls of the shell are respectively provided with a light hole I, each pressure regulating plate is provided with a light hole II, the synchrotron radiation light source emits x-rays, the x-rays irradiate the core element, and then the x-rays are received by the signal receiving plate. The device is used for realizing the in-situ synchrotron radiation test of the core element.

The invention relates to the technical field of automobile testing equipment, and discloses a new energy automobile chassis load testing device which comprises a testing table, a ramp is connected to one side of the surface of the testing table, electric sliding rails are symmetrically installed on the two sides of the testing table, and walking frames are slidably arranged in the electric sliding rails. Telescopic rods are arranged on the two sides, close to each other, of the walking frame, pressure detection mechanisms are arranged at the tops of the two sides of each telescopic rod correspondingly, each pressure detection mechanism comprises a mounting plate, the mounting plates are fixedly connected with the two sides of the corresponding telescopic rod correspondingly, and hanging rods are fixedly mounted on the two sides of the center of the bottom of each mounting plate; the bottom of the hanging rod is hinged to a swing arm, an extension arm is movably installed in the swing arm, and the sides, close to each other, of the extension arm are rotationally connected with a gravity roller, the driving test of various different items can be simulated, continuous running is achieved, the integration degree is high, and the test time is highly saved.

The invention discloses a hydraulic fracturing ground stress testing device and method, and relates to the technical field of hydraulic fracturing, and the hydraulic fracturing ground stress testing device comprises testing equipment. According to the hydraulic fracturing ground stress testing device and testing method, through the design of testing equipment, a water source enters the water pump pipe from the water inlet pipe, water flow is sprayed outwards from the nozzle in the water pump pipe, so that the hydraulic fracturing effect is achieved, the rotating mechanism is driven to rotate through flowing of the water flow, and the effect of cleaning the inner wall of a pipeline through friction is achieved; the rubber pipe is extruded by sliding the packing top block on the packing base, so that the rubber pipe is extruded and deformed to be attached to the surface of soil, the packing effect on a test part is achieved, the silica gel column is arranged in the rubber pipe, the silica gel column has a certain supporting effect and prevents a part from being concaved inwards and collapsed, and the rhombic film is arranged on the outer side of the rubber pipe, so that the rubber pipe is prevented from falling off. Therefore, surface friction force of components is increased, service life of the components is prolonged, and friction load is dispersed.

The invention discloses wafer dynamic parameter testing equipment which is provided with a testing device and a probe card for testing a wafer which is placed on a probe table and is internally provided with a to-be-tested device, and the probe card is provided with a plurality of probes connected with the to-be-tested device and a plurality of conductive contact pieces connected with the probes respectively. A connecting module of the testing device is provided with a plurality of connectors connected with conductive contact pieces, a high-voltage capacitor electrically connected with a high-voltage power supply in the testing device is connected with an inductive load module through a power switch, the inductive load module is connected with the connectors, and a control module is connected with a chip to be tested through the connectors. The control module realizes the dynamic parameter test of the device to be tested in the wafer by controlling the power switch to be turned on and turned off according to a certain time sequence, and the matching value of the probe card and the connector can reduce spurious oscillation signals so as to effectively improve the accuracy of the dynamic parameter test of the wafer. And therefore, the chip testing efficiency can be improved and the chip cost can be reduced.

A communication connectivity QoE testing device within a vehicle includes a network interface to communicate through a cabin network, a display device to display video to a passenger of the vehicle, a processor, and a memory storing code executed by the processor to perform operations. The operations include to send content requests to and receive content from a content server that is offboard the vehicle using the network interface, the cabin network, and a wireless communication modem communicatively connected to the content server through a ground-based network. The operations generate a QoE metric based on measurements of end-to-end communications of the content requests sent and the content received between the QoE testing device and the content server. The operations send a report based on the QoE metric through the network interface, the cabin network, and the wireless communication modem to a network node of an operations center for analysis.

The invention provides an emergency equipment communication test method and device, equipment, a medium and a product, and relates to the technical field of communication, and the method comprises the steps: determining input data of a signal transmission influence model based on test scene information, and inputting the input data to the signal transmission influence model, the signal transmission influence model is used for simulating the influence of the test scene information on signal transmission; acquiring a sending signal of the to-be-tested equipment, and processing the sending signal based on the output data of the signal transmission influence model to obtain a processed signal; the signal transmission influence model is optimized based on signal difference information corresponding to the test scene information, and the signal difference information reflects the difference between the sending signal and the processing signal; the processing signal is sent to a receiving module, the receiving module is determined based on the signal type of the to-be-tested equipment, and a test result of the to-be-tested equipment under the test scene information is generated based on the receiving signal of the receiving module. The communication test cost of the emergency equipment can be reduced.

The invention relates to an automatic full-coverage water spraying rack for vertical spraying of a battery pack, and relates to the technical field of battery pack testing equipment.The automatic full-coverage water spraying rack comprises a spraying frame, a sliding frame capable of moving up and down is arranged on the spraying frame, a moving table capable of moving horizontally is arranged on the sliding frame, and a spraying nozzle is fixed to the moving table; the sliding frame is provided with a translation mechanism for driving the moving table to move horizontally, the spraying frame is provided with a lifting mechanism for driving the sliding frame to move up and down, the two ends of the sliding frame are each provided with a reversing touch switch for controlling the translation mechanism to switch forwards and backwards, and the moving table makes contact with the reversing touch switches when moving to the end of the sliding frame. Through the structural arrangement, the spraying nozzles can move on one plane, uniform spraying operation on the whole surface of the battery pack can be completed within a certain time, and the spraying detection effect is provided.

The isolation unit module for the GIL comprises a shell, a detachable end cover is arranged on the lower portion of the shell, a three-section type conductor assembly is arranged in the shell in the axial direction, guide cups are arranged on the two sides of the three-section type conductor assembly, the guide cups are connected with insulation basins on the outer sides of the guide cups, and the three-section type conductor assembly comprises a middle conductor. Two ends of the middle conductor are respectively connected with a detachable left side conductor and a detachable right side conductor; the three-section type detachable conductor design can quickly disassemble and take out the conductors on the two sides in a conventional state, the rotating shaft and the positioning structure enable the conductors on the two sides to rotate around the shaft by 180 degrees and then take out the conductors, collision damage when the conductors are taken out is avoided, and the design of the corner conductor and the tool interface realizes quick butt joint of test equipment. The electrical performance and the sealing performance during the test are ensured, and the test efficiency is improved.

To realize an inexpensive and miniaturized test device for electrical and electronic equipment. [Solution] The present invention proposes an electrical and electronic equipment testing apparatus for housing an electrical and electronic equipment to be tested in an internal space and testing the electrical and electronic equipment, comprising: a voltage connector to which voltage is applied via a coaxial cable; a housing that includes the voltage connector at its end, constitutes an outer conductor, and forms an internal space; and an inner conductor provided inside the housing, extending from the coaxial conductor of the voltage connector, and constituting a conductor septum, wherein a resin-based insulating material that suppresses the discharge of high-voltage pulses is filled in a predetermined range from the end, determined based on the applied voltage and the distance from the inner conductor to the outer conductor.

This invention relates to the field of pipeline hydrostatic testing technology, specifically to a low axial force hydrostatic testing device for large-diameter high-pressure pipelines. The device includes a sealing and fixing component, a sealing and moving component, and an internal support assembly. A cavity is formed between the internal support assembly and the pipeline under test. The end cap flange of the sealing and fixing component has an inlet hole communicating with the cavity, and a first sealing ring is provided inside the end cap flange for sealing the cavity. In this invention, by placing the internal support assembly inside the pipeline under test to form a cavity and sealing the end of the cavity with the first sealing ring, while simultaneously connecting the inlet hole and the cavity, the test medium flows only within the cavity. This reduces the cross-sectional area of ​​the test medium flow, thereby reducing the actual stress-bearing area of ​​the pipeline under test and reducing the axial force. Simultaneously, during the test, the internal support assembly supports the inner wall of the pipeline under test, reducing the impact of axial force on the pipeline body, thus reducing roundness distortion or local stress concentration, and minimizing issues affecting pipeline dimensional accuracy and structural safety.

The application relates to the technical field of substation operation and maintenance, and is a substation secondary test equipment on-site operation and maintenance system and method, which comprises the following steps: a control platform outputs an operation and maintenance command to secondary online detection equipment in a substation in combination with detection items, and receives and analyzes test result data; a cloud server transmits and stores data between the control platform and the secondary online detection equipment; the secondary online detection equipment performs online detection on a measured device of the substation in combination with the operation and maintenance command; a transmission network is connected with the secondary online detection equipment and the measured device respectively, and transmits related data information; and the measured device transmits detection information and autonomous digital message information back to the secondary online detection equipment in combination with information transmitted by the secondary online detection equipment. The application realizes remote full-automatic test on secondary equipment, greatly reduces labor cost, realizes intelligent, digital and remote operation of substation secondary equipment detection, and realizes 24-hour intelligent operation and maintenance of electric power.