47results about How to "Easy to carry on site" patented technology

The invention discloses an electronic mutual inductor test system and a test method. The electronic mutual inductor test system comprises a standard device, a signal conversion device, an error measuring device, a test power supply, a merging unit and a tested electronic mutual inductor, wherein the standard device is used for providing a standard signal serving as a test reference; the signal conversion device is used for receiving the standard signal and converting the standard signal into an analog signal which can be acquired by the error measuring device; the test power supply is used for outputting a primary voltage and a primary current for test use; the merging unit is used for receiving a digital signal output by the tested electronic mutual inductor and processing the digital signal; and the error measuring device is used for receiving the standard signal output by the signal conversion device and the digital signal output by the merging unit, and acquiring the ratio difference and the phase difference of the tested electronic mutual inductor. The electronic mutual inductor test system is particularly suitable for a field error test of the electronic mutual inductor, andhas the advantages of convenient test work, high reliability, small equipment volume, light weight, high test result accuracy and the like.

The automatic ice and snow thickness contact measuring method belongs to ice and snow thickness variance monitoring technology. Two detecting boards are made to face-to-face move automatically and vertically, and the distance between the reference point and the surface of ice or snow is detected to determine the thickness variance of ice or snow. The sensor for measuring the moving distance ofdetecting boards is either rotation speed sensor or magnetostricctive displacement sensor. The stay time for the detecting boards on ice or snow on the ice or snow interface is at most 10 sec to avoid no freezing with the detecting boards staying in reference position in rest time. The interval between two times of automatic measurement is optional in 0-60 min. The present invention can perform automatic in-situ measurement.

The invention discloses a display method of tempered martensitic steel carbide colour metallography, comprising the following steps of: (1) grinding and polishing the surface of a tempered martensitic steel sample to obtain a tempered martensitic steel metallographic sample; (2) heating the tempered martensitic steel metallographic sample in the oxidation atmosphere to 400-500 DEG C, keeping warm for 6-15 minutes, and forming an interference oxide-film, which makes the microstructure of metal and alloy to present different colors by the action of light, on the surface of the tempered martensitic steel sample, so as to display the tempered martensitic steel carbide color metallography. The method provided by the invention can be used to effectively display and raise the contrast between the T91 steel carbide and the matrix microstructure, so as to effectively observe the microstructure form of the martensitic steel.

The invention discloses an on-site full-automatic pressure calibrator. The on-site full-automatic pressure calibrator comprises a shell, a power supply switch, a plurality of interfaces, a display, control components such as a keyboard and the like, a gas pressure generation unit, a power supply unit, a pressure detection unit and a gas pressure control unit, wherein the gas pressure generation unit is a miniature gas pressure pump which is communicated with atmosphere; the pressure output ends of the pressure control unit are communicated in parallel and are used for accommodating a pressurestandard machine with multiple ranges and a pressure joint of a meter to be detected; the pressure control unit is connected with the pressure standard machine in the pressure detection unit through signals; and a battery can supply power to the power supply unit. The on-site full-automatic pressure calibrator does not need external gas cylinders or alternating current (AC) power supplies, can automatically generate gas pressure and accurate standard pressure, has light self weight and small volume, is convenient to carry on site, is suitable for various meters to be detected, and can automatically calibrate various on-site pressure meters.

The invention provides a portable tester for braking torque of an elevator brake in use. The tester can quantitatively and accurately inspect the braking torque of a static elevator in use and provide a reliable basis for comprehensive inspection of the elevator. The tester comprises a tuning gear and a control system, wherein the turning gear comprises a turning hand wheel and multiple different specifications of detachable small wheels coaxial with the turning hand wheel; the small wheels are in multiple relation with the radius of the turning hand wheel, and a torque sensor and a touch display are mounted on the turning hand wheel; the control system comprises an input/output system and a computer chip control system. The tester is portable, field measurement by elevator inspectors is facilitated, the measuring process is convenient and quick, measured data are scientific and accurate, no damage is caused to the tested elevator, and the safety is high.

The invention discloses a thermal power plant negative pressure side system leakage point accurate positioning method. The method is characterized by comprising the following steps of firstly, adopting an infrared image acquisition device to carry out infrared image shooting on a suspected leakage point position of a negative pressure side system of a thermal power plant; reading an infrared imaging video of the detected equipment through an upper computer processing system, carrying out graying processing, denoising processing and image enhancement processing on the extracted sample image, carrying out a moving template method to identify the image space position of the vacuum leakage point part in the image, and finally accurately determining the leakage point position of the vacuum pipeline. Compared with an existing method, the method has the advantages of being high in positioning speed, high in detection efficiency, high in anti-jamming capability, free of pollution to the environment, free of a large number of external devices, convenient to carry on site, obvious in defining of a leakage area, short in detection time and low in detection cost.

The invention provides a RPLDECT rail potential limiting apparatus electrical apparatus characteristics tester which comprises a housing in which following components are connected in a successive order through lines: a power supply input control unit, a power supply isolation and regulation unit, a power supply voltage doubling, current rectifying and voltage boosting unit, a high voltage current limiting unit, a high voltage output control unit, a high voltage conduction millivolt maintaining and synchronizing unit and a millivolt output unit. The power supply input control unit is further connected to an auxiliary power supply unit. The high voltage output control unit, the high voltage conduction millivolt maintaining and synchronizing unit and the millivolt output unit are connected to a data accessing, displaying and recording unit. The millivolt output unit is further connected to a millivolt power supply generating and setting unit which acts on the millivolt. With the invention, in the construction and delivery of a steel rail potential limiting apparatus for a power grid of a rail traffic system as well as in the maintenance of the apparatus, it is possible to obtain relevant accurate electric characteristic parameters about the apparatus so as to provide effective data for the safety of concerned people around a rail transportation facility.

The invention provides a sampling method for the particle-size test of ultrahigh-pressure insulating oil. The sampling method is characterized by adopting the following steps: (1) a latex pipe with a glass pipe at the tail end is connected to a sampling valve, the sampling valve is opened for washing a sampling pipeline; (2) a special sampling bottle for the particle size test is arranged on a working platform surface in a clean environment, a sealing cover of the sampling bottle is removed, a clean cover with a hole at the top part seals and covers the sampling bottle, and the glass pipe is inserted to the bottom part of the sampling bottle from the hole in a sealing manner; (3) the sampling valve is opened, an oil sample flows into the sampling bottle to the position 0.5-1cm away from the sealing cover of the sampling bottle, the sealing cover is lifted to the bottom surface of the sealing cover and is slightly higher than a bottle opening of the sampling bottle, so that the oil sample overflows but does not come into contact with the bottom surface of the sealing cover and the overflowing of the oil sample is maintained for 3-8S; (4) the clean cover with the glass pipe is taken away, and then the clean sealing cover of the sampling bottle covers the sampling bottle, thus finishing the sampling. The sampling method provided by the invention has the beneficial effects that the operation is simple, the ultrahigh-pressure insulating oil can be sampled conveniently, no pollution is caused in the sampling process of the insulating oil, and further the accuracy of a detection result is guaranteed.

The invention discloses a remotely controlled continuous casting billet nail jet device and method, which belong to the technical field of continuous casting for steelmaking. The method is characterized by comprising the following steps of: fixing the nail jet device on one side of the to-be-measured surface of a continuous casting billet before start according to measurement requirements, and vertically aligning a guide hole in the front end of the nail jet device with the to-be-measured surface of the continuous casting billet; connecting a power supply of the nail jet device within five minutes before jet, wherein at the moment, operators and field staff withdraw to a safety zone; switching on a power switch of a remote controller within one minute before jet, counting down and waiting a jet instruction; and pressing down a jet button on the remote controller when the jet time is reached, and triggering the nail jet device to make special steel nails enter the billet. The device can perform accurate remote control operation on the continuous casting billet nail jet, and has the characteristics of scientific design, high safety, low billet loss and the like. The method is easy and feasible, and can realize safe and accurate operation according to different position measurement requirements.

The invention provides a portable turnout operation device, and belongs to the technical field of railway construction engineering. According to the technical scheme, the portable turnout operation device comprises a power supply circuit and a turnout switching circuit, the power supply circuit comprises an alternating current power supply interface and a bridge rectifier Q1, the two input ends of the bridge rectifier Q1 are AC1 and AC2 respectively, and the two output ends of the bridge rectifier Q1 are DC1 and DC2 respectively; the turnout switching circuit comprises a double-pole double-throw switch K1, a positioning indication lamp DB, a reverse indication lamp FB, a four-pole double-throw switch K2 and external terminals X1-X4. The switch combination of the K1 and the K2 corresponds to the communication relation between the external terminals X1-X4 and AC1, AC2, DC1 and DC2. The external terminals X1-X4 respectively correspond to corresponding terminals on a turnout switch machine, and the switch combination comprises a positioning action, an anti-position action, a positioning expression and an anti-position expression. The circuit has the advantages of being simple and reliable in structure, small in size and easy to carry, debugging whether action circuit switching of the turnout switch machine is good, and indicating whether the circuit is correct.

The invention provides a charging hydraulic tool which comprises a handle, a hydraulic driving part and an end part structure, wherein the end part structure comprises a working head; a replaceable working component is arranged on the working head; the charging hydraulic tool further comprises a connecting mechanism used for connecting the hydraulic driving part with the end part structure; and the connecting mechanism adopts a rotatable component, and can enable the end part structure to rotate by 360 degrees while transmitting a jacking action force of the hydraulic driving part. The charging hydraulic tool can realize multiple operation functions, is convenient to use, and has a wide application prospect, and moreover, the end part structure can rotate by multiple angles.

The invention discloses an insulation box for a transformer DC resistance tester. The insulation box comprises a box body formed by hinging a box base and a box cover; a heating plate, an intelligenttemperature controller and an electric leakage protection power supply plug, wherein the intelligent temperature controller and the electric leakage protection power supply plug are arranged at adaptive positions in the box cover. The transformer DC resistance tester is arranged in the box base, and at least one heating plate is arranged at the adaptation position of the side wall adjacent to thetransformer DC resistance tester. The electric leakage protection power supply plug, the intelligent temperature controller and the heating plate are connected in series through a wire. According to the requirement for the running environment temperature of the instrument, the temperature adjusting is carried out, the heat preservation in the box can be carried out, the temperature adjusting speedis high, the size is small, and the carrying is convenient, and time and labor are saved. The trouble brought to the work due to the environment is thoroughly solved. A lot of purchasing instrument funds are effectively reduced for enterprises, and good economic and social benefits are achieved.

The invention provides a full-automatic steel rail accurate grinding machine which comprises a fixing frame and a grinding device arranged on the fixing frame. The fixing frame comprises a fixing transverse frame and fixing vertical frames, the grinding device comprises a grinding motor, a rotating shaft of the grinding motor is connected with a grinding wheel, a moving belt is arranged between the two moving vertical frames, the moving belt is moved left and right through a reciprocating motor, the grinding wheel is connected with a feed motor through a speed reduction moving transmission device, the fixing vertical frames are provided with a control processor for controlling the grinding motor, the feed motor and the reciprocating motor, and the two ends of the moving belt are provided with proximity switches. According to the automatic steel rail accurate grinding machine, the structure is simple, the components are clear in division of work, the weight is low, workers can carry themachine on site, on-site carrying is convenient, a grinding curve is automatically generated through an eddy current sensor, a temperature sensor and the control processor, the grinding path is controlled, the grinding speed is high, grinding precision is high, the steel rail connector maintenance speed can be improved, and steel rail connector maintenance quality is ensured.

The invention discloses a device and a method for quickly evaluating the paraffin inhibition rate of a paraffin remover and inhibitor for field use. The device comprises a self-heating tank (1), a sample bottle (2), a spiral glass coil (3), a liquid collection graduated test tube (4) and a support (5), the sample bottle (2) is fixed at the top of the support (5), the spiral glass coil (3) is fixed to the middle position of the support (5), the liquid collection graduated test tube (4) is fixed at the bottom of the support (5), the self-heating tank (1) is also fixed at the bottom of the support (5), the lower end of the sample bottle (2) is connected with the spiral glass coil (3), and the spiral glass coil (3) is arranged right above the liquid collection graduated test tube (4).

The invention relates to a preparation method and application of a capillary array for rapid occult blood detection. The capillary array realizes rapid, sensitive and high-flux visual detection for occult blood under a capillary phenomenon of automatic suction of a sample according to the development reaction that hemoglobin in the occult blood catalyzes an encapsulation substrate. Firstly, a porous hydrogel-encapsulated peroxidase catalytic reaction substrate is modified on the inner wall of a capillary, thus preparing the visually colorimetric capillary array to automatically suck the sample under the capillary action of the capillary; the capillary can be enabled to display blue colors in different degrees according to the development reaction that the hemoglobin in the occult blood sample catalyzes the porous hydrogel-encapsulated peroxidase catalytic substrate on the inner wall, so that the hemoglobin content of the sample can be directly, quickly, quantitatively or visually determined; and the preparation method has the characteristics of rapidness, sensitivity, high flux, small use amount of the sample, low cost, visualization and the like.