21results about How to "Avoid production accidents" patented technology

This application provides a composite roll profile curve for hot rolling work rolls and its design method. The composite roll profile curve is composed of a parabolic roll profile curve and a double circular arc roll profile curve superimposed on each side. The composite roll profile curve is symmetrically distributed on both sides, and each side includes a crown control section, an edge drop control section, and a deviation control section. The crown control section corresponds to the middle area of ​​the strip and adopts a parabolic design to control the crown of the hot-rolled strip. The edge drop control section corresponds to the edge of the strip and is smoothly connected to the crown control section. The positive circular arc curve design can reduce the roll profile change rate at the edge of the strip, improve the edge drop of the strip, and uniformize the wear at the edge of the roll. The deviation control section is connected to the edge drop control section and does not contact the strip. The reverse circular arc curve design can prevent the strip from deviating and losing the clamping of both sides of the roll, causing production accidents. This hot-rolled work roll profile can control the cross-sectional profile of the hot-rolled strip and has the ability to resist strip deviation.

The invention discloses a roller peeling real-time monitoring and automatic shutdown control method. The method comprises the steps that real-time rolling force data are obtained; rolling force prediction data are obtained based on the real-time rolling force data and a trained ARIMA rolling force prediction model; obtaining a first rolling force absolute deviation according to the real-time rolling force data and the rolling force prediction data; and carrying out real-time monitoring and automatic shutdown control on the peeling state of the roller based on the first rolling force absolute deviation and a rolling force absolute deviation threshold value. By means of the method, further expansion of production accidents such as roller breakage caused by the fact that a rolling mill continues to operate due to the fact that roller stripping is not found in time on site can be prevented, and the consumption cost of the on-site roller is reduced; and meanwhile, the accident shutdown time caused by roller stripping on site can be greatly shortened, quick response can be achieved after the roller is abnormally stripped, automatic shutdown is achieved, and the accident shutdown time caused by roller stripping and damage to rolling mill equipment are shortened within the maximum range.

The invention belongs to the technical field of vibration data identification, and discloses a real-time adaptive learning bearing fault classification method and system based on prototype alignment and a parameter-by-parameter adaptive learning rate, and the method comprises the steps: inputting a source domain sample into a source domain pre-training module, obtaining a basic classification model through supervised training, and carrying out the training of a source domain pre-training module; extracting a feature mean value of each category to construct a source domain feature prototype set; in a target domain test stage, generating a relatively stable pseudo tag for a target domain sample by using an EMA Teamer module; then, an online self-adaptive updating process is executed on a target domain sample by using a pseudo tag, and feature alignment is performed in the process by combining symmetric cross entropy loss and prototype-based comparison loss; meanwhile, model parameters are stably updated by adopting a parameter-by-parameter adaptive learning rate strategy; and finally, outputting an accurate prediction label for a target domain sample by the model after adaptive training.

The application discloses a continuous annealing production method for an extremely thin specification flux-cored wire steel, and discloses control processes and control parameters of each working procedure of the continuous annealing production method. The continuous annealing production method for the extremely thin specification flux-cored wire steel is realized through the process control, the stable and smooth production line can be ensured, and production accidents can be avoided.

A CBS hydrogen peroxide oxidation endpoint detection method belongs to a chemical synthesis detection technology, realizes direct, real-time and accurate determination of an oxidation endpoint through a closed-loop system of in-situ potential signal, ultraviolet absorption signal and dissolved oxygen concentration multi-dimensional signal acquisition, on-line lightweight verification and dynamic model self-correction, does not need off-line sampling in a reaction process, and is simple in operation and convenient to operate. The total detection response time is not longer than 5 s, the end point judgment accuracy is high, the misjudgment risk is low, the automation degree is high, the process stability is high, and the method is suitable for CBS industrial continuous production.

The utility model discloses an anti-corrosion compressor iron pipe which comprises an iron pipe body, the two ends of the iron pipe body are both communicated with connecting sleeves, the inner wall of each connecting sleeve is in threaded connection with a positioning pin, the upper surface of the iron pipe body is connected with an identification parameter board, and the back face of the iron pipe body is connected with a corrosion sensor. By means of the multi-layer composite structure design of the high-strength iron core layer, the alloy reinforcing middle layer and the corrosion-resistant inner layer, mechanical strength supporting is progressively conducted to a chemical protection layer, corrosion of various media such as refrigerating system refrigerants and chemical corrosive gas can be effectively resisted, the service life of the iron pipe is greatly prolonged, the sensing electric wire is matched with the corrosion sensing piece, and the service life of the iron pipe is prolonged. The corrosion change of the inner wall of the iron pipe can be captured in real time, the temperature sensor and the pressure sensor synchronously monitor internal working condition data, all information is transmitted to external equipment through the data connector, an alarm can be given immediately once corrosion abnormity occurs or temperature and pressure exceed the standard, and early warning of hidden dangers is achieved.

A stamping die female die plate convenient to replace relates to the technical field of stamping dies and comprises a female die plate body, the upper end face of the female die plate body is provided with an inwards-concave forming cavity, the bottom of the female die plate body is provided with a limiting bottom plate, the limiting bottom plate and the female die plate body are integrally formed in a casting mode, and a transmission gear is installed in the middle of the interior of the female die plate body. The transmission gear is rotationally connected with the concave mold plate, sliding plates are installed on the two sides of the transmission gear, the sliding plates are slidably connected with an inner cavity of the concave mold plate, racks are arranged on the inner sides of the sliding plates, the racks are connected with the transmission gear in a meshed mode, and inserting plates are integrally formed at one ends of the sliding plates. And a locking limiting structure is arranged above the transmission gear. According to the scheme, the problems that potential safety hazards exist when the female die plate is replaced, and the stability of a replacement structure is poor are solved.

The specification discloses a model training method, a system change risk control method and device, and electronic equipment. The method comprises: obtaining system change samples, the system change samples comprising reference system change samples and comparison system change samples, the reference system change samples being system change samples with an existing change risk, and the comparison system change samples being labeled with risk classification labels. A similarity between the reference system change samples and the comparison system change samples in time sequence feature data in a performance change dimension is calculated by a comparison learning network based on a risk identification model, to obtain feature similarity. A classification calculation network based on the risk identification model is used to perform classification calculation on the feature similarity and time sequence feature data of the comparison system change samples in a change influence dimension, to obtain a predicted risk classification result. A training loss is determined by calculating the predicted risk classification result and an actual risk classification result, and parameters of the comparison learning network and the classification calculation network are adjusted according to the training loss.

The invention belongs to the technical field of casting blank cutting, and particularly relates to a conveying roller device and method for solving adhesion of a casting blank after cutting. The lifting roller is arranged between the conveying roller and the flame cutting area, due to the fact that the lifting roller rotates by one circle, the highest point of the upper end of the lifting roller is higher than the upper end of the conveying roller, and the lowest point of the upper end of the lifting roller is lower than the upper end of the conveying roller. Therefore, one end of the cut casting blank can be lifted up through the lifting roller, displacement in the vertical direction of the casting blank to be cut is achieved, then the adhesion position is snapped through the lifting force of the lifting roller and the gravity of the casting blank, and the cutting efficiency and safety of the casting blank are effectively guaranteed. The device is simple in structure, can effectively solve the problem of casting blank adhesion, reduces the labor of workers, and avoids production accidents caused by untimely treatment.

The application relates to the technical field of high-temperature control, in particular to a high-temperature control method and system applied to biomass mechanism carbon, which comprises the following steps: obtaining kiln environment parameters, gas component detection data and raw material characteristics of a target carbonization kiln in a mechanism carbon firing process; identifying the kiln position of key monitoring indexes and abnormal indexes of a corresponding firing stage of the target mechanism carbon according to the kiln environment parameters, the gas component detection data and the raw material characteristics; and visually displaying the kiln position of the key monitoring indexes and the abnormal indexes of the corresponding firing stage of the target mechanism carbon. Through the acquisition of the kiln environment parameters, the gas component detection data and the raw material characteristics, real-time monitoring and adjustment of the carbonization process can be realized, so that the target mechanism carbon is ensured to be fired in an optimal temperature interval, and the product quality is improved.

The utility model discloses a kind of movable reel loading frame, comprising: support frame is set on workbench, support frame is used to support the height position of material tray, it is characterized in that, support frame lower end is connected with carousel, carousel is used to adjust the orientation of material tray, carousel rotation is connected with sliding table, sliding table is installed on slide rail, and sliding table and slide rail sliding fit to adjust the position of material tray on workbench, limiting component for limiting the position of sliding table is provided on workbench, when material tray is used, limiting component is used to fix the position of sliding table, angle locking assembly is provided on carousel, when material tray is used, carousel is connected with sliding table by angle locking assembly to lock the angle of carousel on sliding table, to prevent material tray from rotating in turn;By the above mode, the position and orientation of loading frame can be moved when it is necessary to change material, so that material can be changed in sufficient space, and personnel injury and product damage caused by reel falling during loading can be reduced.

A fixture device for machining Niemann worm gears using seven-axis five-linkage CNC milling includes a fixture support friction-reducing disc. An oil spraying lubrication assembly is floatingly and fixedly mounted on the upper surface of the fixture support friction-reducing disc. The lower surface of the oil spraying plate has multiple through holes. A clamping assembly is fitted onto the fixture support friction-reducing disc through these through holes, facilitating high-speed rotation around the central axis following the friction-reducing disc. A lifting column assembly is fixed to the oil spraying lubrication assembly, a tailstock support assembly is fixed to the lifting column assembly, and a circumferential limiting assembly for the oil spraying plate is fixed to the ground inside the machine tool's working chamber. This invention is used for milling Niemann series worm gears on a seven-axis five-linkage CNC machine tool, ensuring smooth side milling and preventing worm gear deformation. The adjustable length of the lifting column assembly and tailstock support assembly allows the fixture to adapt to the machining of worm gears of various geometric sizes and shapes, highlighting the adaptability and versatility of the fixture for vertical milling of worm gears.

This utility model relates to the field of energy storage battery production and discloses a new energy battery assembly device, including an assembly line. The assembly line has a spot welding system installed inside, a chip suction component installed at the top, and a limiting component installed inside. The chip suction component includes a housing, the bottom of which is fixedly connected to the top of the assembly line. A collection frame is slidably connected inside the housing. A fan is fixedly connected to the rear of the housing, and a flexible hose is fixedly connected to the top. Sheaths are fixedly connected to both sides of the housing. In this utility model, the fan provides suction to the flexible hose, causing it to draw sparks and debris generated by the spot welding system into the collection frame. A spring pushes the sliding frame, causing a ball bearing to engage with the outside of the collection frame, automatically removing sparks and preventing production accidents. Simultaneously, the collection frame can be quickly removed for easy cleaning of the internal debris.

The invention belongs to the technical field of thickener control, and particularly provides a method for predicting the height of a mud layer of a thickener, and the method specifically comprises the following steps: 1, describing the rheological characteristics of ore pulp through a Herschel-Bulkley model based on a rheological principle, and obtaining a shear rate; 2, according to the rheological property, particle interaction, turbulent flow disturbance and wall effect of ore pulp, a model that the mud layer height changes along with time is established; 3, determining distribution of the ore pulp concentration C along with time and space, and establishing a diffusion-convection equation of the ore pulp concentration; and 4, substituting the solved ore pulp concentration C into the mud layer height change model, and then carrying out numerical solution on the equation to obtain a dynamic change relation of the mud layer height H along with the time t. According to the method, the mathematical model is constructed, multiple parameters in the production process are fully considered, the dynamic change of the mud layer height of the thickener is more accurately calculated, higher accuracy and reliability are achieved, and meanwhile key data support is provided for automatic control of the thickener.

The utility model discloses an anti-falling structure of a spring plate type dummy ingot of a large round billet continuous casting machine, and relates to the technical field of continuous casting. The anti-falling dummy bar comprises a dummy bar body and a plurality of anti-falling mechanisms, the dummy bar body comprises a plurality of chain links which are sequentially connected, spring plates are arranged on the chain links, a torsion piece is arranged between every two adjacent chain links, each chain link comprises a group of side beams, a supporting plate is arranged between the two side beams, and the spring plates are fixed on the supporting plates of the chain links. According to the utility model, the anti-falling mechanisms are arranged among the chain links forming the dummy bar, and the movable openings with larger calibers are matched with the shaft lever, so that a certain buffering capability is achieved, and a safety is added to the dummy bar body during the production period; production accidents caused by the fact that the dummy bar body is directly disengaged due to breakage of the spring plate are effectively avoided, large production accident losses can be avoided with low cost, and meanwhile the original functions of the dummy bar cannot be affected.

The application discloses a method for detecting activated sludge state based on settling image texture entropy change characteristics, which comprises the following steps: measuring and controlling sludge concentration of a sludge-water mixture sample; placing the sample in a transparent container to make the sludge in a suspended state; fixing the position and focal length of a camera to shoot a video of the activated sludge settling process; cutting a plurality of activated sludge settling images from the video of the activated sludge settling process to obtain an image set; cutting the image set at a proper position; performing pretreatment operation on the cut image set to calculate data of texture entropy change with time at a plurality of different heights; drawing the data into a settling image entropy change hologram; calculating the slope and slope direction of the matrix formed by the settling time, settling height and image texture entropy; drawing a polar coordinate scatter plot of the slope and slope direction data to calculate the normalized sedimentation separation time, normalized clarification degree and normalized compression degree; and analyzing the activated sludge state.

According to the anti-interference electricity motor control circuit, the other end of an incoming line switch QF is connected with the conduction end of a contactor KM, and the conduction end of the contactor KM is connected with a motor M through the coil end of a thermal relay KH; the other end of the contactor KM is connected with the L phase through the normally closed end of the thermal relay KH, the normally closed end of the intermediate relay TJ and the normally open end of the time relay KT in sequence, and the normally open end of the time relay KT is connected with the normally open end of the contactor KM in parallel; a coil end of the intermediate relay HJ is connected in parallel with a coil end of the time relay KT, one end of the coil end of the intermediate relay HJ is connected with a negative electrode of the power supply end, and the other end of the coil end of the intermediate relay HJ is connected with a positive electrode of the power supply end through a button HA and a conducting end of a contactor KM; one end of the coil end of the intermediate relay TJ is connected with the negative electrode of the power supply end, and the other end is connected with the positive electrode of the power supply end through the button TA, and is connected with the positive electrode of the power supply end through the normally-open end of the intermediate relay TJ and the normally-open end of the time relay KT in sequence.

The application discloses a high-precision multi-dimensional flower basket in-place induction assembly and relates to the technical field of crystalline silicon cell production. The high-precision multi-dimensional flower basket in-place induction assembly comprises a main control box, a pair of light emitting and receiving sensors and a passive radiation sensor. The main control box is used for receiving conversion signals sent by the induction assembly. The pair of light emitting and receiving sensors are symmetrically arranged. The passive radiation sensor is vertically arranged. The physical induction sensor assembly comprises a pressure sensor and a pressure receiving component. The pressure receiving component can conduct pressure to the pressure sensor. The application can perform pre-induction before the flower basket is in place, reduce the running speed of the conveying belt, reduce the deviation of the flower basket in the reaction time, improve the accuracy of the in-place position of the flower basket, perform multi-dimensional matching induction on the in-place of the flower basket, ensure accurate induction of the in-place of the flower basket and effectively avoid production accidents.

This utility model relates to the field of chemical process machinery and equipment technology, and discloses an energy-saving double-effect extraction and concentrator, including multiple support frames. The key feature is that multiple support plates are fixedly connected to the outer walls of each support frame, multiple guide rods are fixedly connected to the outer walls of each support frame, sliders are slidably connected to the outer walls of each guide rod, springs are sleeved on the outer walls of each guide rod, connecting plates are rotatably connected to the tops of each slider, springs are fixedly connected to the tops of each support frame, and fixing plates are fixedly connected to the other ends of each spring. This utility model can prevent structural fatigue damage caused by long-term severe vibration, such as support deformation and cracking of shell welds, which could lead to potential safety hazards. Especially under high pressure and high temperature concentration conditions, the stable equipment structure can effectively reduce the risk of material leakage and ensure production safety.

The invention provides a screening method and system for a blast furnace heat prediction model, and relates to the technical field of blast furnace smelting. The method comprises the following steps: training a plurality of candidate prediction models; calculating a combined evaluation index of each model for furnace heat abnormity early warning, wherein the indexes comprise three indexes for measuring prediction accuracy, abnormity capture capability and early warning advance; and determining an optimal prediction model according to an evaluation result of the combined evaluation indexes. According to the method, the combined evaluation indexes oriented to abnormal early warning are constructed, so that the model evaluation standard is aligned with the actual production demand, the screened optimal model has the capability of accurately early warning the key furnace heat abnormality in advance, precious reaction time can be won for field operators, and the method has relatively high practical value.

The invention provides an abnormal production judgment method, and relates to the technical field of mine production state judgment, and the method comprises the steps: inputting the real-time production video data of a mine into a trained video detection model, and determining an abnormal main body and a first abnormal score of the mine in the production process; performing main body verification on the abnormal main body based on a preset sensor to obtain a second abnormal score; performing time-space consistency verification on the real-time production video data to obtain a third abnormal score; and determining a final abnormal score based on the first abnormal score, the second abnormal score and the third abnormal score, comparing the final abnormal score with a preset score threshold, and if the final abnormal score is greater than the preset score threshold, determining that the mine is in an abnormal production state. According to the method, the production state of the mine is comprehensively evaluated through the three abnormal scores, and the accuracy of judging whether the mine is in the abnormal production state or not is improved.