Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

75results about How to "Simplify the testing process" patented technology

Temperature-controllable portable multifunctional pressure chamber

The invention relates to a temperature-controllable portable multifunctional pressure chamber, which is characterized in that a confining pressure chamber is connected with the oil source of an external confining pressure loading device by a confining-pressure oil inlet; an axial pressure chamber is connected with the oil source of an external axial pressure loading device by an axial pressure oil inlet; an axial pressure piston is arranged in the axial pressure chamber, and enters the confining pressure chamber after passing through the head cover of the confining pressure chamber; a sample cylinder is composed of a side wall, a base and an upper pressing board, wherein the base is provided with a porous disc, and samples are placed on the porous disc and then covered by a head cover; a spiral refrigerating-fluid circulating pipe winding the cavity of the confining pressure chamber and the base and the upper cover of the sample cylinder are internally carved twin-spiral refrigerating-fluid circulating slots respectively, and connected with an external refrigerating plant; temperature sensors arranged in the confining pressure chamber and on the base and the upper cover of the sample cylinder are respectively connected with an external temperature controller; the external temperature controller is connected with the external refrigerating plant, and the porous disc is connected with a water replenishing or drainage connector. The temperature-controllable portable multifunctional pressure chamber of the invention has the characteristics of accurate and independent multi-point temperature control and multifunction and is easy to carry, can be used with freeze thawing cycling testers, triaxial testers and CT scanners, and does not need to be performed installation and sample taking for many times and cause disturbances on samples, thereby simplifying the test process.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE

Testing system for measuring static cracking agent swelling pressure and testing method thereof

The invention provides a testing system for measuring static cracking agent swelling pressure and a testing method thereof, belonging to the technical field of geotechnical engineering. According to the system, a pressure testing machine rigid frame is provided with a pressure sensor, a barrel, a first piston and a second piston are arranged between a pressing head and the pressure sensor, the second piston is in contact with the pressing head, and the first piston is in contact with the pressure sensor. The testing method comprises the steps of placing the first piston into the bottom of the barrel and placing the barrel on the pressure sensor, loading a static cracking agent into the barrel and leveling the agent and then covering the barrel with a plastic film, placing the second piston into the barrel, starting a pressure testing machine and driving the pressing head to move downward through an oil cylinder such that the pressing head is in contact with the second piston, with the volume swelling of the static cracking agent, axially pushing the first piston and the second piston with the agent and recording a numerical value of swelling pressure with the pressure sensor, and dividing the numerical value of the swelling pressure with the cross section area of the first piston or the second piston to obtain the value of the static cracking agent swelling pressure.
Owner:NORTHEASTERN UNIV

Soil mass shearing rupture failure testing device and method

The invention discloses a soil mass shearing rupture failure testing device which comprises a base, a front baffle plate, a thrust providing device, a load sensor, a displacement sensor and a data acquirer. A soil mass shearing rupture failure testing method comprises the following steps of: (1) putting a test sample on a second slide track between the front baffle plate and the thrust plate; (2) starting the thrust providing device, applying a pressure to the test sample, and recording; and (3) generating a curve graph of the stress and the deformation of the test sample. The test sample is put on the base between the thrust plate and the front baffle plate, the front baffle plate and the thrust plate are arranged at the left and right sides of the crack of the test sample, the thrust plate applies thrust to one side of the test sample, opposite to the thrust plate; and the test sample is blocked by the front baffle plate so as to prevent the test sample from sliding. with the crack as a boundary, the left and right sides of the test sample takes are subjected to two forces in opposite directions till the test sample is damaged. The forces acting on the test sample in the test sample can be read through the load sensor, the deformation position can be read through the displacement sensor, the test process is simple, and the read test result is not influenced by the operation error and the friction and is high in accuracy.
Owner:CHONGQING JIAOTONG UNIVERSITY

Hydraulic reverse valve oil head test control device

The invention relates to a device for controlling the test of the oil port of a hydraulic reversing valve, and belongs to the valve testing technology field. The device comprises controlling valves and an oil duct, wherein the oil duct is connected with the controlling valves; the oil duct is connected with an oil tank and a pressure oil source. The device is characterized in that the oil port of the test reversing valve is respectively connected with the controlling valves; the controlling valves are connected into a controlling bridge circuit in parallel through the oil duct; the controlling bridge circuit is composed of the controlling valves and an overflow valve; after being connected in series, the controlling valves are connected in parallel; the overflow valve is connectedly installed among the controlling valves connected in series after being connected in parallel; the controlling bridge circuit is provided with an externally connected controlling valve; the externally connected controlling valve is connected with the oil supply oil duct of the pressure oil source; a controller is connected with the controlling valves and the overflow valve in the controlling device. By using the controlling device, the test process is simplified, the test efficiency is enhanced, the labor intensity is reduced, and the automation of the test process is realized.
Owner:天津市精研工程机械传动有限公司

Fixture of test piece for testing inter-laminar drawing fatigue of pavement and testing method thereof

The invention relates to a fixture of a test piece for testing inter-laminar drawing fatigue of a pavement and a testing method thereof. At present, no person researches inter-laminar drawing fatigue of a pavement structure at home and abroad. The fixture comprises an upper assembly and a lower assembly which are buckled and sleeved with each other, wherein the upper assembly is a rectangular frame formed by butting a pair of C-shaped plates; the lower end face of the rectangular frame is provided with a lower through hole; vertical ribs are uniformly arranged on the inner side face of the rectangular frame; the lower assembly is a U-shaped frame formed by connecting a pair of same U-shaped frames; the middle part of the upper end face of the U-shaped frame is provided with an upper through hole; the upper through hole and the lower through hole have the same shape; the upper through hole is positioned above the lower through hole and is opposite to the lower through hole; and both sides of the upper end face are provided with grooves which are nested with the ribs and can be in sliding fit with the ribs. After the test piece is fixed by using the upper assembly and the lower assembly, a vertical waveform load is applied to the lower end of the test piece, so that uniform tension stress is produced on a tack coat and a characteristic parameter reflecting drawing fatigue is obtained according to the fatigue tension stress of the test piece and loading times.
Owner:CCCC FIRST HIGHWAY CONSULTANTS +1

Pressure transfer eccentric water distribution blanking plug

The invention discloses a pressure transfer eccentric water distribution blanking plug. The blanking plug comprises a lower main body and an upper main body which is connected with the lower main body, wherein the upper main body is connected with the lower part of a fishing rod; the lower main body is provided with a pressure transfer hole I along the axial direction; the upper main body is provided with a pressure transfer hole II along the axial direction; the lower part of the fishing rod is provided with a central hole along the axial direction; the middle part of the fishing rod is provided with at least two seal rings between which a necking section is arranged; a pressure transfer hole III is formed in the necking section; the pressure transfer hole I, the pressure transfer hole II and the central hole are communicated with the pressure transfer hole III; a spring is sleeved outside the lower part of the fishing rod; the front end of the spring is provided with a pressure transfer sleeve; the front end of the pressure transfer sleeve is provided with a through hole III along the radial direction; the fishing rod is positioned in the pressure transfer sleeve; the front end of the fishing rod is connected with a pressure transfer joint in which a pressure transfer hole IV is formed; and the pressure transfer hole IV is communicated with the through hole III. Through the blanking plug, the aim of simultaneously performing underground layered flow testing and seal examination testing is fulfilled during normal water injection of an eccentric layered water injection well.
Owner:HENAN FUQIAO PETROLEUM EQUIP CO LTD

Method and device for testing length of water column in drilling hole for measuring gas pressure

The invention relates to an underground gas pressure testing technology, in particular to a device for testing the length of a water column in drilling a hole for measuring the gas pressure, wherein apipe wall of the front section of a steel pipe is provided with a plurality of distributed holes so that a pressure-measuring embossing pipe is formed at the front section of the steel pipe, a stainless steel wire is arranged in the center of the pressure-measuring steel pipe, the pressure-measuring steel pipe and the stainless steel wire are spaced, and the end surface between the front end of the pressure-measuring steel pipe and the front end of the stainless steel wire is sealed by an insulating sleeve; the tail end of the pressure-measuring steel pipe is sealed, a precision pressure gauge is arranged at the tail end of the pressure-measuring steel pipe, and the pressure-measuring steel pipe is used for detecting the total pressure of gas and liquid in a pressure measuring drilling hole; a first electrode of a direct current power supply is connected with the pressure measuring steel pipe through a test wire through and a variable resistance box, and a second electrode is connected with the stainless steel wire through the test wire. According to the invention, the method accurately corrects the water pressure of a water-containing drilling hole. The device and the operation of the method are simple, the calculation is accurate, and the testing circulation is extremely short. Gas over limit or impact accident caused by a prior technology are avoided.
Owner:CCTEG SHENYANG RES INST

Method for simultaneously measuring polarization coupling distribution of optical fiber ring and beat length of surrounding optical fiber

The invention discloses a method for simultaneously measuring polarization coupling distribution of an optical fiber ring and beat length of a surrounding optical fiber. An optical coherence domain polarization detector based on a white light interference principle is adopted for measurement, and the method comprises the steps of: measuring the length of an optical fiber ring through a meter counter when the optical fiber ring is wound, and after the optical fiber ring is wound, connecting tail fibers at the two ends of the optical fiber ring with tail fibers at the two ends of the optical coherence domain polarization detector; testing polarization coupling distribution of the optical fiber ring by adopting the optical coherence domain polarization detector; identifying two connecting points of the optical fiber ring and the optical coherence domain polarization detector from the polarization coupling distribution diagram, and testing and calculating the corresponding optical path difference of the two tail fiber connecting points of the optical fiber ring during the optical path scanning test; calculating the beat length of the optical fiber according to the optical path difference, the looped optical fiber length recorded during looping and the test wavelength; obtaining the polarization coupling distribution of the optical fiber ring and the beat length of the surrounding optical fiber at the same time through one test. The test calculation method is simple, the test process is simplified, the equipment requirement is reduced, and the test efficiency is improved.
Owner:青岛君戎汇通光电科技有限公司

Quick phase-splitting switcher for alternating-current loop

The invention provides a quick phase-splitting switcher for an alternating-current loop and relates to the technical field of AC commutation. The switcher comprises a housing, input binding posts, anoutput binding post, a rotating knob, a rotating shaft, a moving contact, and a static contact. The housing is cylindrical, and the rotary knob is connected with the housing. The rotating shaft is provided with a moving contact, and the rotating knob is connected with the rotating shaft and the moving contact is driven to do axial movement around a central axis of the housing. The input binding posts comprise an A-phase binding post, a B-phase binding post, a C-phase binding post and an N-phase binding post and are arranged on a cylindrical side surface of the housing, and the output binding post is arranged on a bottom surface of the housing and is connected with the rotary knob. The connection of different static contacts is achieved by rotating the rotating knob, and therefore, the phase switching is achieved. Through the phase-splitting switcher provided by the invention, the problem that interfaces of a four-phase alternating-current loop and a two-phase detection instrument do not correspond to each other can be solved, the operation intensity of workers is reduced, and the processes of the connection of a measurement instrument into the alternating-current loop and an alternating-current loop detection test are simplified.
Owner:STATE GRID TIANJIN ELECTRIC POWER +1

Bluetooth equipment and test method thereof

The invention provides Bluetooth equipment and a test method thereof, aiming to improve the test efficiency and reduce the test cost through a mode that Bluetooth equipment to be tested tests each other. The method includes the following steps: enabling first equipment to search for a Bluetooth pairing broadcast sent by the Bluetooth equipment to be tested, wherein the first equipment is any Bluetooth equipment to be tested; if the Bluetooth pairing broadcast sent by the Bluetooth equipment to be tested is searched, determining the searched Bluetooth equipment as second equipment, and sendingan instruction for testing a Bluetooth connection function to the second equipment; if a feedback response of the instruction is received, determining that the second equipment passes the Bluetooth test; otherwise, stopping the search, and judging whether the first equipment passes the Bluetooth test; if the equipment is in a to-be-tested state, sending the Bluetooth pairing broadcast; if the instruction for testing the Bluetooth connection function is received, returning a response of a successful Bluetooth connection; and if an identifier that the Bluetooth test has been successfully performed is received, determining that the Bluetooth equipment testing is completed.
Owner:BEIJING HAITAI FANGYUAN HIGH TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products