32results about How to "Save purchase funds" patented technology

The invention relates to an operation error remote calibrating method of an intelligent ammeter. The method comprises the following steps: (1) installing an intelligent ammeter cluster to form a tree-shaped topological structure; (2) to obtain a flow conservation foundation model of the intelligent ammeter cluster; (3) importing a virtual branch circuit to dynamically correct an intelligent ammeter cluster topological model, to obtain a flow conservation algorithm model; (4) to obtain electric current incremental data of the intelligent ammeter cluster repeatedly, and calculating a relative error; (5) correcting a calculation result and uncertainty evaluation; and (6) to obtain an error calculation result. The method is capable of, in allusion to 0.48 billion of the on-line operated intelligent ammeters in state grid corporations, applying a full data sample thinking mode, mining mass electric energy data of a power consumer electricity information collection system without the help ofan external standard instrument, carrying out the remote verification technical research of the intelligent ammeters, enabling both power supplier and consumer to master the accuracy of an electric energy metering device in real time, satisfying the expected requirement of clients, and improving the corporate image.

The invention relates to a multifunctional rapid assembly mounting hole. The mounting hole is formed by a rectangle top with a semicircle orifice. The semicircle orifice is stretched symmetrically outside to form a first limiting hole and a second limiting hole. A plurality of small rectangle locating holes are evenly distributed in the edge of the mounting hole, wherein arbitrary three small rectangle locating holes are provided with one opening at one end. Each opening end is communicated with the mounting hole through a straight flute. The bottom of the mounting hole is formed by a rapid assembly opening. A third limiting hole and a fourth limiting hole are formed symmetrically in the connection portion of two sides of the rapid assembly opening and the mounting hole. The multifunctional rapid assembly mounting hole is suitable for more than ninety-eight percent of electric tools at home and abroad, and therefore use ratio of the electric tools is improved greatly. Due to the fact that change of tool heads for users is convenient and rapid, labor productivity is improved greatly and labor strength is released.

The invention discloses a battery online monitoring system and method. The system comprises a host computer, a battery information integrated management host, a data concentration module and a plurality of data acquisition modules. The data acquisition module is used for acquiring the individual voltage, the, the internal resistance, the charge and discharge current and temperature information ofa battery pack, and adjusting the voltage balance of the battery pack. The battery information integrated management host is electrically connected with the host computer and the data concentration module through a communication unit. The data concentration module interacts with the data acquisition modules successively. The battery online monitoring system and method replaces a battery insulationmonitoring device, uses new technology to monitor multiple states of the battery, and provides a battery monitoring function. The battery online monitoring system and method prolong the service lifeof the battery, saves the purchase fund of the battery, detect hidden dangers timely and reduce power loss. By means of the battery online monitoring system and method, it is no longer required to manually detect the internal resistance of the battery regularly and verify the capacity annually by operation and maintenance workers.

The invention discloses a method for detecting the insufficient depth of fusion in real time in a robot welding process. The method comprises the following steps of S1, collecting the welding voltage,the welding current and the welding speed in the robot welding process in real time; S2, calculating a real-time welding line energy of a corresponding section weld seam on the basis of the welding voltage, the welding current and the welding speed; S3, counting the welding line energy average value when the corresponding section weld seams have no defect; S4, judging whether the real-time welding line energy of the corresponding section weld seam is smaller than the welding line energy average value or not, if yes, entering a step S5, and otherwise repeating the step S4; and S5, pre-warningthe defects of insufficient depth of fusion of the corresponding section weld seam.

The invention relates to a multi-screen interactive VR teaching training method and system, a terminal and a storage medium. Contents displayed by virtual simulation in VR can be completed in the PC-3D editor on the interface, and after the desktop PC end is completed, the virtual end can obtain data to display scenes and teaching aid toy placement states, so that the teaching aid toy in the VR scene can be synchronized with the environment of the desktop terminal through training, learning and building, the building result in the VR virtual space-time can be obtained on the desktop by openingthe PC-3D under the condition that the VR is not started, further editing can be conducted, and the virtual 3D and the plane 3D can be complemented with each other..

The invention relates to an error control method for online operating smart electric energy meters based on full sample data thinking. The method comprises the following steps: (1) installing a smartelectric energy meter cluster to form a tree topological structure; (2) introducing a virtual branch to correct a smart electric energy meter cluster topological model; (3) eliciting a flow conservation algorithm model; (4) acquiring the sample data of all smart electric energy meters; (5) substituting all the sample data into the flow conservation algorithm model to calculate the errors of all the smart electric energy meters; and (6) realizing precise control according to the error results of all the smart electric energy meters. The method applies the full sample data thinking to the 480 millions online operating smart electric energy meters of the state grid corporation, excavates massive electric energy data of a power user electric information acquiring system, measures the error data of all electric energy meters, uses whole data instead of a random sample, requires no external standard equipment, carries out smart electric energy meter remote calibration technology research, and enable power supplier and consumers to be able to understand the accuracy of energy metering devices in real time.

The invention relates to a remote calibration method for an operation error of a generalized flow instrument, and the method comprises the steps: (1), installing a generalized flow instrument clusterto form a tree-shaped topological structure; (2), obtaining a flow conservation algorithm model of the generalized flow instrument cluster based on the tree-shaped topological structure formed by thegeneralized flow instrument cluster; (3), correcting a line loss error, introducing a virtual branch to correct the topological model of the generalized flow instrument cluster, and correcting the flow conservation algorithm model; (4), calculating a relative error; (5), correcting a calculation result and estimating the degree of uncertainty; (6), obtaining an error calculation result. The methodemploys a full data sample thinking mode for 0.48 billion online operating intelligent electric energy meters of the State Grid Corporation, achieves the mining of mass electric energy data of a power utilization information collection system for power users, does not need an external standard instrument, achieves the performing of the remote calibration technology of the intelligent electric energy meters, enables the power supply side and a power utilization side to know the accuracy of an electric energy metering device in real time, meets the expected demands of customers, and improves the enterprise image.

The invention relates to a smart gas meter online comprehensive error calibration method. The smart gas meter online comprehensive error calibration method includes: (1) arranging a smart gas meter cluster to form a tree topological structure, and acquiring a flow conservation basic model of the smart gas meter cluster; (2) acquiring a flow conservation algorithm model; (3) frequently recording flow data of the smart gas meter cluster in operation, and recording an operation condition of the smart gas meter cluster; (4) performing equivalent conversion on the flow data; (5) calculating a current intermediate error; (6) performing uncertainty evaluation; and (7) calculating and acquiring a comprehensive error. The objective of the invention is that in actual operation, in the operation condition beyond the influence quantity of a laboratory condition, initial quantization is performed, and then data of measurement meters in online operation in different conditions is used as a usable value to perform calculation, and accurate calibration in a non- experiment condition can be achieved; a whole data sample thinking manner is used to mine mass computer data of a user electricity consumption information acquisition system without using external standard instruments; and the cost is reduced, and the efficiency is improved.

The invention relates to an intermediate check method for online operating intelligent heat meters. The method comprises specific steps: (1) an intelligent heat meter cluster is arranged to form a tree topology structure, and a flow conservation basic model for the intelligent heat meter cluster is acquired; (2) an initial flow conservation algorithm model is acquired; (3) the flow data of the intelligent heat meter cluster in an initial state are recorded, and initial errors are calculated; (4) during an intermediate check setting time limit, an intermediate flow conservation algorithm modelis acquired; (5) relative errors are calculated during the intermediate check setting time limit; (6) correction and uncertainty evaluation are carried out on the calculation result; and (7) the current intermediate errors and the initial errors are compared for intermediate check evaluation. The method of the invention aims in that all online operating intelligent electric energy meters are subjected to high-efficiency intermediate check at a low cost, the operation error change trends are focused, the use of an external standard instrument is not needed, and thus, a power supply side and a power consumption side can know the accuracy of the electric energy meter metering device in real time.

The invention discloses a large roller datum surface run-out measurement device. The device comprises a roller and a base plate, the base plate is provided with a support frame for supporting the roller, and a stand column, wherein the support frame is 'Y'-shaped, a front end of the support frame is provided with an end face stanchion, and two sides of the support frame are respectively provided with two support columns; the stand column is provided with a sliding sleeve, the sliding sleeve is connected with a dial indicator holder, and by the dial indicator holder, a dial indicator is fixed on the stand column with the sliding sleeve. A lower end of the dial indicator is provided with a measuring point, and the measuring point contacts with a roller end face. An included angle of the 'Y'-shaped support frame is 90 degrees. The end face stanchion arranged at the front end of the support frame contacts with one end face of the roller; the support columns at two sides of the support frame contact with an external surface of the roller. The measurement device witch such structure can be simultaneously used for roller datum surface run-out measurement of three different types, is simple to operate, can avoid procurement of various measurement devices and can save lots of procurement fund.

The invention belongs to the technical field of operating maintenance of power stations, particularly relates to a PRATT large-caliber butterfly valve seat seal ring replacement method and aims at researching and developing of the PRATT large-caliber butterfly valve seat seal ring replacement technology. By means of the PRATT large-caliber butterfly valve seat seal ring replacement method, the problem that this type of large-caliber butterfly valve equipment of Qinshan Third Nuclear Power Company Ltd. cannot be repaired is solved; the spare part purchasing and on-site repair cost is saved, andthe requirements for field work are met. The method is characterized by comprising the steps of cleaning an old valve seat, assembling a valve seat, conducting air testing before glue injection, conducting glue injection and conducting cleaning and checking. Since the PRATT butterfly valve seat seal ring maintenance and replacement technology is developed successfully, about 130 seawater system large-caliber butterfly valves are sequentially repaired successively in total, and the equipment purchase funds are saved by RMB 50 million or more.

The invention discloses a method for rapidly testing the content of a lead element in a plated layer of a tin plate. The method for rapidly testing the content of the lead element in the plated layerof the tin plate comprises the following steps: (1) pretreating a sample; (2) carrying out electrolysis tin removal; (3) preparing a standard solution, namely preparing a standard lead solution, a substrate improver and a diluent; (4) testing the lead element. By adopting the method, only one sample needs to be taken, and the method is short in detection time, high in efficiency and high in accuracy.

The invention discloses a special milling machine for machining separation plates of tube plates. The milling machine comprises a bracket, wherein a working table is arranged on the bracket; a guide rail and a screw are arranged at the upper end of the bracket; the guide rail is matched with a horizontal traveling mechanism and a vertical height adjustment mechanism; the screw is spirally matched with the horizontal traveling mechanism; a hand wheel is arranged at the other end of the screw; a milling mechanism is arranged on the vertical height adjustment mechanism; the horizontal traveling mechanism props against the vertical height adjustment mechanism. After the special milling machine for machining the separation plate grooves of the tube plates is manufactured, three plate grooves of three tube plates with the nominal diameters of DN800mm, DN1200mm and DN1800mm are selected for trial machining, the operation situation of the milling machine and the machining quality of a workpiece are evaluated, and the machining quality, accuracy and surface roughness of the workpiece can meet requirements of a drawing.

The invention discloses an air gap special tool for checking a gap between a stator and a rotor of a compressor motor of a refrigerator. The tool comprises an air gap feeler gauge, a clamping handle and a handle pressing sleeve. The clamping handle has a two-petal structure. The air gap feeler gauge is set in a gap of the clamping handle. The air gap feeler gauge moves in an axial direction relative to the clamping handle. The air gap feeler gauge is fixed relative to the clamping handle by wrapping the clamping handle with the handle pressing sleeve. The problems of large loss and difficultyin replacement of the air gap feeler gauge during the use of an existing tool are mainly solved.

The invention aims to provide a scheme for detecting welding pores in real time. According to the scheme, in the welding process, infrared thermal imaging of a welding seam area on a workpiece or a base material is collected in real time through an infrared thermal imager, then the infrared thermal imaging on the workpiece or the base material is processed, an image corresponding to the welding area is selected from the infrared thermal imaging, and then a target feature matrix is extracted according to the image corresponding to the welding area; and according to the target feature matrix, whether the air hole defect exists in the welding area or not is judged. Compared with the prior art, the welding air hole defect can be detected in real time in the welding process, the welding air hole defect can be effectively pre-warned, the welding quality problem is reduced, and the production and machining efficiency is improved. The detection cost can be saved, and the manual detection cost and the procurement fund of professional detection instruments are reduced to a certain extent.

The invention provides a regeneration method of a scrapped Cr5 forged-steel working roller. The method comprises the steps of working roller detection, 680-700 DEG C high-temperature tempering process, twice quenching and tempering processes, and surface hardening process. In the twice quenching and tempering processes, first quenching and tempering comprises the steps that temperature is maintained at 940-980 DEG C for more than 12h and quenching is carried out; and temperature is maintained at 630-660 DEG C for 18-25h and tempering is carried out, wherein a target roller hardness is 35-45HSD; second quenching and tempering comprises the steps that temperature is maintained at 940-980 DEG C for more than 12h and quenching is carried out; and temperature is maintained at 630-660 DEG C for 18-25h and tempering is carried out, wherein a target roller hardness is 40-50HSD. With the steps, the scrapped Cr5 forged-steel working roller reaches application performances of a new roller. When the method provided by the invention is used in regeneration manufacturing of scrapped Cr5 forged-steel working roller, cost can be greatly saved.

The invention relates to a method for remote calibration of a running error of an intelligent water meter. The method comprises the specific steps of (1) installing an intelligent water meter clusterto form a tree topology structure; (2) obtaining a flow conservation basic model of the intelligent water meter cluster; (3) introducing a virtual branch to dynamically correct a topology model of theintelligent water meter cluster to obtain a flow conservation algorithm model; (4) obtaining multiple water flow increment data of the intelligent water meter cluster and calculating a relative error; (5) conducting correction and uncertainty evaluation on the calculation result; and (6) obtaining an error calculation result. The method uses the principle of flow conservation and big data analysis technology to achieve a remote detection of massively on-line running intelligent water meter errors without adding standard equipment, changing the meter structure and changing the cluster topologyof the intelligent water meter.

A multifunctional insulated insulator cradle with an adjustable length is characterized by comprising a wire end clamp, a hanging piece, a main insulator cradle body, an adjustable insulator cradle body and a threaded connection rod, wherein the hanging piece is fixedly connected to the right end of the main insulator cradle body and the wire end clamp is connected with the hanging piece; the right end of the adjustable insulator cradle body is inserted into the left end of the main insulator cradle body, the insertion thickness is adjustable, and the right end of the adjustable insulator cradle body is positioned through a through hole and a pin on the adjustable insulator cradle body; the left end of the adjustable insulator cradle body is connected with the threaded connection rod. The multifunctional insulated insulator cradle with the adjustable length has the advantages that the length is adjustable, the multifunctional insulated insulator cradle can satisfy the requirement for replacement of insulator chains with insulator sheets in different numbers and can replace a plurality of original insulator cradles of different lengths, the management and storage difficulty of insulation tools is lowered, the multifunctional insulated insulator cradle is detachable and is easy to assemble, vehicle transportation and manual carrying are facilitated, an end fixing and hanging device is additionally arranged so that the multifunctional insulated insulator cradle can be converted into an insulated horizontal ladder, and therefore an operator can enter a highfield and exit from the highfield.

The invention discloses an efficient cutting gas synergist composed of a component A, a component B and a component C, wherein the component A is prepared from 25-35 parts by weight of isooctyl nitrate, 10-15 parts by weight of cyclohexyl nitrate and 5-10 parts by weight of dicumyl peroxide; the component B is prepared from 30-40 parts by weight of di-tert-butyl peroxide and 5-15 parts by weight of di-tert amyl peroxide; the component C is prepared from 2-8 parts by weight of ferrocene. The invention also discloses a preparation method of the synergist, special adding equipment and an adding method. Fuel gas blended by using the synergist has excellent cutting performance, and a strong technical support is provided for more comprehensively replacing acetylene gas in the flame cutting field.

The invention discloses an energy-saving improvement method of a large melamine device with a low-pressure process. The method comprises steps as follows: S1, after carrier gas sequentially passes by a first carrier gas preheater, a second carrier gas preheater and a third carrier gas preheater, the temperature of carrier gas is increased from 190 DEG C to 400 DEG C; S2: an insulation gas heater is directly heated with the adoption of molten salt. According to the energy-saving improvement method of the large melamine device with the low-pressure process, although net byproduct steam with the gauge pressure of 1.2 MPa or 2.2 MPa can be produced at 5-6 t / h with an existing low-pressure-process melamine production process, energy of the byproduct steam comes from fuel coal, the energy utilization rate is relatively lower than that of a large boiler, and accordingly, a large amount of byproduct steam should be avoided to the greatest extent in process design; after improvement of the process, coal is saved by 0.152 t for melamine per ton, coal is saved by about 6840 t every year, the purchasing cost of coal is saved by 8,000,000 yuan, annual carbon emission reduction is about 10,878 t, and the energy saving and emission reduction effects are remarkable.

The invention relates to an iterative calculation method for electric energy meter error based on measurement uncertainty. The specific calculation steps are: (1) setting the initial value of α to 0; (2) substituting the collected data into the operation error to remotely verify the calculation error of the flow conservation model; (3) Check the rationality of the error, if it is unreasonable, correct the empirical coefficient α, and calculate the error again; if it is reasonable, enter the next step; (4) the number of out-of-tolerance tables, if it does not meet the interval, correct the empirical coefficient α, and calculate the error again; If so, proceed to the next step; (5) Calculate the error by using slip iterative calculation until the error value of each electric energy meter is obtained; (6) evaluate the uncertainty of the error value; (7) obtain the final result of the error calculation. This method combines the big data prediction technology of the error change trend of the electric energy meter, and can complete the user's non-perception replacement operation before the out-of-tolerance problem occurs, eliminates hidden dangers, and avoids unnecessary disputes over measurement accuracy.

The invention discloses a hydrochloric acid tank. The hydrochloric acid tank comprises a tank body, a tank bottom, an acid mist pipeline, a self-circulation pipeline, an acid return pipeline, a conductivity assay pipeline, a regenerated acid entering pipeline, a rinsing water pipeline, an acid pump pipeline, a waste acid discharging pipeline, a waste acid pump supply pipeline and communicating pipelines. The acid mist pipeline, the self-circulation pipeline, the acid return pipeline, the conductivity assay pipeline, the regenerated acid entering pipeline and the rinsing water pipeline are arranged on the top of the tank body, the communicating pipelines are oppositely arranged on two sides of the bottom end of the tank body, the tank bottom is arranged at the bottom of the tank body, the section of the tank bottom is arc-shaped, the waste acid discharging pipeline is arranged at the lower end of the tank bottom, and the acid pump pipeline and the waste acid pump supply pipeline are arranged at the tank bottoms on two sides of the waste acid discharging pipeline. By configuring all pipelines on the acid tank to serve as spare parts, pipelines needed to be connected are connected according to a using position when the acid tank is used on line, and pipeline needed not to be connected are blocked with blank flanges, so that the probability that one spare part replace three acid tanks is achieved. The procurement fund is saved and the occupied space of the spare parts is reduced.

The invention provides an electric shovel wire inlet circuit control device for an electric hydraulic forklift, relates to the field of medium voltage electrical equipment control, particularly to the field of electric shovel inlet circuit control of the electric hydraulic forklift. The safe, reliable, and efficient control of the electric hydraulic forklift can be achieved by corresponding upgrading of replacing an SF6 circuit breaker with a vacuum circuit breaker.

The invention discloses a mobile high-frequency charging device. The device comprises a charging cabinet body, a plurality of high-frequency charging modules which operate in parallel are arranged inthe charging cabinet body, wherein at least one 220V high-frequency charging module and at least one 110V high-frequency charging module are arranged in the plurality of high-frequency charging modules; a back surface of the charging cabinet body is provided with a 220V DC output interface and a 110V DC output interface which are correspondingly connected with the 220V high-frequency charging module and the 110V high-frequency charging module, four corners of the bottom of the charging cabinet body are respectively provided with a pulley, and the top of the charging cabinet body is provided with a suspension ring. When the standby storage battery pack for transformer substation direct-current system transformation, storage battery maintenance, storage battery replacement or direct-currentsystem fault input is insufficient in electric quantity, the standby battery pack can be rapidly charged, the standby battery pack uninterruptedly supplies power to the direct-current power supply system, and the fault probability of a power grid is reduced.

The invention discloses a CNC-controlled three-axis parallel roll collar hole pattern machining method. A roll collar to be machined and a diamond grinding wheel with the standard radius are installedon a grinding machine, a grinding program is edited according to a hole pattern to be machined, parameters are input, a machining stroke is generated through CNC, and the diamond grinding wheel grinds the roll collar according to the machining stroke. The grinding steps comprise coarse grinding, pre-fine grinding, fine grinding and smoothing, after grinding, a WENTAST full-automatic measuring system is used for measuring parameters such as the groove distance and the groove depth of the roll collar, and the next grinding step is selected according to the measuring result until the hole pattern meets the requirement. According to the method, the diamond grinding wheel with the standard radius can be adopted for grinding different hole patterns, the diamond grinding wheel does not need to be specially customized and formed for grinding the roll collar with the optimized hole pattern, the special-shaped hole pattern which cannot be machined by the formed grinding wheel can be ground, on-schedule production of wires with the non-common specification can be guaranteed, the stock of the formed diamond grinding wheel is reduced, the production cost is reduced, and technical support is provided for wire production.

The invention discloses a milling mechanism for milling machines special for tube plate partitions. The milling mechanism comprises a fixing rack, a small pulley, a large pulley, a V belt, and a speed regulating motor. The large pulley is fixedly connected with a spindle. A three-jaw chuck and a milling tool are mounted at the lower end of the spindle. After a milling machine special for slotting tube plate partitions finishes is manufactured, three partition slots of three tube plates with nominal diameters (DN800mm, DN1200mm and DN1800mm) are subjected to trial machining, operating conditions of the milling machine and machining quality of work pieces are assessed, and results show that machining quality, machining precision and surface roughness of work pieces can all meet the demands of drawings.

The title of the present invention is a kind of multi-purpose height ruler, relate to a kind of measuring instrument of measuring height and depth. It mainly solves the problem of large-scale workpiece inspection, which requires large-scale measuring instruments and special inspection tooling, which requires a large investment. General measuring tools measure the surrounding dimensions on a certain benchmark, and the measurement range and position are limited. It is not easy to fix during operation and is susceptible to human factors. The problem of interference. One end of the main ruler of the present invention is fixed with a rotating shaft, the rotating shaft is connected to the magnetic base through a roller bearing, the horizontal auxiliary ruler is fixed on the main ruler perpendicular to the main ruler through the ruler frame, and the vertical auxiliary ruler and the horizontal auxiliary ruler are fixed vertically through the ruler frame On the horizontal sub-ruler, measuring claws are fixed at the end of the horizontal sub-ruler. The invention improves the machining efficiency and precision of workpieces.

The invention discloses a split-type automobile rear-axle housing assembly welding method, which includes the following steps: half-axle housing pressing manufacturing, semi-axis casing pipe machine processing, rigid positioning assembly for semi-axis casing pipes and an axle housing body, welding of the axle housing body and semi-axis casing pipes, accessory assembly welding and integral detection and correction. Through adjusting the assembly sequence of the semi-axis casing pipes and the axle housing body, after a group of simple rigid positioning clamps is added, the traditional axle housing body port boring procedure and the semi-axis casing pipe press-in procedure are eliminated, production line investment is greatly reduced, raw material cost is saved, product quality and working efficiency are improved, and production period of the product is shortened; and the manufactured automobile rear axle housing by adopting the assembly welding method is low in cost, good in quality and short in manufacturing period, can effectively improve market competitiveness of the product, and has better market prospect.