41results about How to "Timely repair" patented technology

The invention discloses a bad traffic monitoring method and system based on an LSTM and a clustering algorithm, belongs to the technical field of network security, and efficiently converges network traffic by using a BPF technology. The method comprises the following steps: accurately identifying fragmented traffic through an LSTM network, and capturing a complex dependency relationship by using a special memory unit structure of the LSTM network; performing session recombination by adopting an FCM clustering algorithm, restoring a complete network session, and quickly identifying malicious traffic through feature matching; and finally, timely treatment measures are taken for the confirmed malicious traffic. According to the method, rapid and accurate detection and identification of bad website traffic fragmentation behaviors are realized, and the technical problem that a traditional method is difficult to deal with is solved; through efficient caching and recombination mechanisms, the efficiency and accuracy of malicious traffic processing are improved; intelligent disposal measures are adopted, and it is ensured that malicious traffic is effectively restrained in time; the overall protection capability of network security is improved, and enterprise network resources and user data security are protected.

The invention provides a near-wind-field power transmission line hardware fitting operation state intelligent diagnosis method and system, and relates to the technical field of power transmission line operation monitoring. Comprising the steps of calculating a first influence factor and a second influence factor of a transmission line fitting use state; determining an initial diagnosis threshold of the use state of the power transmission line fitting; calculating a power transmission line hardware fitting use state diagnosis threshold value influence factor, and determining a power transmission line hardware fitting use state diagnosis threshold value; and acquiring a transmission line fitting operation characteristic data set, calculating a fitting operation characteristic evaluation value, and judging whether the transmission line fitting use state is qualified in combination with the transmission line fitting use state diagnosis threshold. According to the method, a comprehensive, dynamic and accurate power transmission line fitting use state diagnosis threshold value with a customized property is determined from the three aspects of environment microclimate, fitting characteristic data and near wind field wind power characteristics of the power transmission line fitting, and more scientific and reasonable fitting maintenance is realized.

The invention discloses a simulated medical picture visualization system and method based on an MR technology, and relates to the field of medical simulation teaching, and the system comprises a medical image data acquisition module, a medical image data processing module, a simulated medical picture dynamic adjustment module and an equipment real-time monitoring module. According to the method, the quality of the medical image of the pre-visualized medical image is screened, the quality of the medical image for mixed reality simulation is ensured, the sense of reality of a mixed reality scene is improved, and the virtual environment is more changeable and flexible by monitoring the real environment light parameters in real time and dynamically adjusting the virtual environment light parameters. By monitoring the real-time transmission parameters of the MR equipment, the stability and instantaneity of the user in the using process are ensured.

The utility model provides a transformer oil tank with a damping function. The transformer oil tank with the damping function comprises an oil tank body, a pre-cooling frame is fixedly connected to the right side of the oil tank body, an oil inlet pipe is fixedly connected to the right side of the pre-cooling frame, a pre-cooling pipe is rotationally connected to the oil inlet pipe, a plurality of pre-cooling pieces are fixedly connected to the surface of the pre-cooling pipe, and rotating shafts are arranged on the two sides of the pre-cooling pipe; a motor is installed on the right side of the pre-cooling frame, a transmission gear is fixedly connected to the driving end of the motor, a rotating gear is fixedly connected to the right portion of the surface of the pre-cooling pipe, the transmission gear is meshed with the rotating gear, two air cooling fans are installed on the top of the pre-cooling frame, and a fixing rod is fixedly connected to the right side of the oil tank. And the fixed rod is fixedly connected with a fixed disc. The transformer oil tank with the damping function has the effects of reducing the refrigerating pressure of the oil tank and ensuring stable operation of a transformer.

The invention relates to a large language model processing method and device, equipment, a storage medium and a program product, and relates to the technical field of natural language processing. According to the method and the device, the adjusted large language model can be used for expanding the risk data set, and the original generation capability of the large language model can be prevented from being degraded. The method comprises the following steps: identifying security activation parameters in a large language model for a sample by using data; inputting the multiple groups of risk data into the large language model and recording a current gradient slice corresponding to the security activation parameter after the large language model is processed; according to the similarity between the current gradient slice and the abnormal gradient slice, identifying valid data in the multiple groups of risk data to obtain a data training set; performing low-rank fine tuning on the large language model according to the data training set to obtain fine tuning parameters; and updating the original weight of the security activation parameter based on the fine tuning parameter and the security activation parameter, and adjusting the model parameter according to the updated weight, the adjusted large language model being used for expanding the risk data set.

The invention provides an embankment anti-seepage treatment method based on water conservancy construction, and relates to the field of water conservancy projects, and the method comprises the following steps: A, excavating at an embankment position needing to be implemented according to a construction drawing to form an embankment foundation, constructing on the embankment foundation to form anti-seepage geotechnical cloth, and compacting the anti-seepage geotechnical cloth; b, an anti-seepage panel is constructed on the anti-seepage geotechnical cloth, and the anti-seepage panel is compacted; c, paving a cushion layer and a transition layer on the anti-seepage panel according to construction requirements; d, burying different intelligent sensors at different parts of the constructed dike, and constructing a real-time monitoring network; and E, transmitting the data acquired by the sensor to a remote monitoring platform through the Internet of Things technology, and analyzing and processing the data. A traditional water conservancy construction dike anti-seepage method is improved, a physical anti-seepage structure and an intelligent monitoring technology are combined, leakage problem early warning can be timely and accurately carried out, effective repairing measures are rapidly taken after early warning, and the dike anti-seepage treatment performance is greatly improved.

The utility model discloses a water supply network leakage detection device based on the Internet of Things, and relates to the technical field of water supply networks. The problem that although an existing pipe network leakage detection device can detect the leakage phenomenon, emergency treatment cannot be conducted on water seepage or water leakage events, and consequently a large amount of water resources are wasted is solved. The two ends of the connecting pipe are each provided with a flange, the flange at one end of the connecting pipe is connected with the end of the pipe network first water supply pipe, and the flange at the other end of the connecting pipe is connected with the end of the pipe network second water supply pipe. The joints of flanges at the two ends of the connecting pipe and the first pipe network water supply pipe and the joints of flanges at the two ends of the connecting pipe and the second pipe network water supply pipe are each sleeved with a detection shell assembly, the two ends of an inner hole of each detection shell assembly are each provided with a sealing ring in an embedded mode, and a pressure sensor, a central controller and a flow meter are sequentially arranged in the middle of the outer surface of the connecting pipe from left to right. The first pipe network water supply pipe and the second pipe network water supply pipe are each provided with an electromagnetic valve. The device is suitable for the technical field of water supply network leakage detection.

The invention provides a silicone rubber material, a preparation method thereof and a cable. The silicone rubber material comprises the following components in percentage by mass: 67.09 to 90.28 percent of polysiloxane; 3.86% to 11.35% of an initiator; 3.84% to 12.38% of a repairing agent; 2.02 to 9.18% of a catalyst; the initiator is included in the first microcapsule, the repairing agent is included in the second microcapsule, and the catalyst is included in the first microcapsule or the second microcapsule. When the silicone rubber material is damaged and cracks are generated, the shells of the first microcapsule and the second microcapsule are broken, the initiator, the repairing agent and the catalyst are released due to siphoning, the initiator and the repairing agent are subjected to chemical reaction under the action of the catalyst, new polysiloxane rubber is generated at the damaged crack, and the silicone rubber material is repaired. Therefore, the damaged crack structure is repaired in time, and the mechanical properties, physical properties and the like of the silicone rubber material are repaired to a certain extent. In addition, due to the addition of the first microcapsules and the second microcapsules, the silicone rubber material is reinforced and toughened, and the physical and mechanical properties of the silicone rubber material are improved.

The invention relates to the technical field of metal extrusion equipment, and discloses an online segmented temperature control deformed aluminum extrusion container which comprises a rack, an extrusion container body is mounted on the rack, a moving plate is slidably mounted on the rack in the vertical direction, and a moving circular plate is slidably mounted on the moving plate in the length direction of the moving plate; the periphery of the movable circular plate is sleeved with a rotating sleeve, the rotating sleeve is rotationally connected with the movable circular plate, a rotating assembly used for driving the rotating sleeve to rotate is arranged on the rotating sleeve, and a scraping plate is fixed to the peripheral face of the rotating sleeve; the side face, away from the rotating sleeve, of the scraper can be attached to the inner circumferential face of the extrusion cylinder. The cleaning device has the effects of being high in cleaning efficiency and good in cleaning effect.

The utility model relates to a box bottom cable moistureproof threading connection structure of a distribution box, comprising a distribution box body, the bottom of the distribution box body is provided with two wire inlets which are symmetrically distributed left and right, the distribution box body is internally provided with four moistureproof assemblies, every two of the four moistureproof assemblies are in one group, and the other two of the four moistureproof assemblies are in one group. The moisture-proof assemblies are symmetrically distributed up and down, each group of moisture-proof assemblies is mounted through a wire inlet, each moisture-proof assembly comprises a mounting base and a sealing ring, a cable enters the distribution box body through the interior of the mounting base, and after the cable is connected with an electrical element in the distribution box body, gas is injected into the cavity through the gas nozzle, so that the electrical element in the distribution box body is sealed. The sealing ring is tightly attached to the gap between the cable and the mounting base after expansion, so that a physical barrier is formed, moisture is effectively prevented from entering the box body, and cable insulation layer aging, metal part corrosion or short circuit faults caused by the moisture are avoided.

The present invention relates to the technical field of electronic harness production test equipment, and specifically to a motor power line conduction test device, wherein the device body includes a fixed disk, a power supply, and a test disk assembly, wherein the test disk assembly includes an upper disk portion, wherein a first disc-shaped depression is provided on the upper surface thereof, the fixed disk is located at the center of the first depression, and the inner wall of the first depression and the outer wall of the fixed disk are spaced to form a first groove, and the coil group is embedded in the first groove when fixed to the fixed disk; at least two second grooves are spaced on the inner wall of the first depression, and the second grooves are evenly arranged around the first groove, and the second grooves are depressions that are perpendicular to the inner wall of the first depression, and a metal test piece is provided in any second groove, and any test piece is connected to the low potential of the power supply, and the number of the low potential terminals of the power supply is not less than the number of the test pieces, and any test piece is connected to the low potential of the power supply through an indication unit. The present invention improves operation accuracy, improves test efficiency, and reduces repetitive work.

The present specification discloses a method and device for repairing a database. If a blocking event is detected in the database, the database system log can be obtained, and the event type of the blocking event can be determined based on the database system log. The event type includes at least one of a disk-to-disk blocking type and a merge blocking type. The disk-to-disk blocking type is used to indicate a blockage caused by transferring data from a memory to a disk, and the merge blocking type is used to indicate a blockage caused by merging data on the disk. Then, the parameters in the database parameters that are associated with the event type of the blocking event can be adjusted according to a preset adjustment strategy, and the database can be repaired based on the adjusted parameters. Thus, the present method can repair the database in time after a blockage occurs in the database to ensure the normal operation of the database, thereby improving the maintainability of the database system.

The invention discloses a visual characterization method for Hash mapping code peculiar smell to a 3D space, and relates to the field of software engineering. According to the method, accurate, unique and quality-associated characterization from code elements to a 3D space is realized through an algorithm link of associated code quality indexes, and the problems that traditional 2D visualization information is overloaded, 3D visualization has no quality association and calculation is complex are solved. According to the algorithm, code quality indexes serve as input, 3D space positions and visual attributes are output through calculation processing, and the real-time characterization requirements of a large-scale code library are met.

The invention relates to the technical field of air volume detection, in particular to a portable fire-fighting air volume detection device which comprises a device body, a detection sensor is arranged in the device body, an air channel is formed in the device body, a fan is rotationally connected into the air channel, and a tail box is fixedly connected to the outer side wall of the device body. By arranging the self-checking lubricating mechanism, the running state of the bearing can be automatically detected before use, abnormal conditions such as bearing jamming can be quickly recognized, faults can be pre-judged in advance, the use safety and reliability of the device are effectively improved, lubricating oil can be automatically and quantitatively dropwise added when it is detected that the rotating speed of the bearing is abnormal, and the service life of the device is prolonged. Slight jamming is repaired in time, further deterioration of faults is avoided, the service life of the device is greatly prolonged, mechanical locking and audible alarm are achieved for organic damage which still cannot be recovered after lubrication, and an operator is visually prompted to conduct maintenance in time.

This invention belongs to the field of wheel adjustment technology and discloses a track electrical automation drive device and its driving method. The drive device includes a support beam, a fixed plate fixedly connected to the lower end of the support beam, a protective sleeve fixedly connected to the lower end of the fixed plate, a drive shaft rotatably connected to the middle of the protective sleeve, a pressure sensor embedded in the inner wall of the protective sleeve, a connecting plate slidably connected to the middle of the protective sleeve, a buffer spring assembly fixedly connected to the upper end of the connecting plate, the top of the buffer spring assembly abutting against the pressure sensor, a fixed ring fixedly connected to the middle of the drive shaft, and an adjustment and limiting mechanism between the fixed ring and the connecting plate. The adjustment and limiting mechanism consists of a support plate, a limiting block, a fixed cylinder, a limiting ring, and ball bearings. An adjusting component is provided on the side end of the protective sleeve, and an adjusting plate is fixedly connected to the upper end of the adjusting component. This invention can adjust and control the wheels of a train, preventing the train from tilting when traveling on curves and ensuring the safety of train operation.

The utility model discloses operation monitoring equipment for a wind generating set, which relates to the technical field of detection equipment and comprises a vertical shaft wind generating set, the vertical shaft wind generating set comprises a blade support and a blade shaft rod assembled on the blade support, the blade support comprises mounting seats which are distributed in parallel along the vertical direction, and ports of the mounting seats are distributed adjacently. A rotating part fixedly connected with one end of the blade shaft rod is rotationally arranged in the mounting seat, and a convex part is fixedly arranged on the rotating part; the mounting seat is in threaded connection with a sealing cover which is inserted into the blade shaft rod, a shifting block is rotationally arranged on the inner side surface of the sealing cover, and the shifting block is matched with the lug boss in a blocking and detaching manner; the side faces of the adjacent sides of the shifting block and the sealing cover are each provided with an arch-shaped elastic metal reed. Electric pulse signals are generated through mechanical triggering so as to monitor the rotating speed of the blade.

The invention discloses an ultrasonic detection system for defects of a main shaft of a fan under an in-situ non-disassembly condition. The ultrasonic detection system comprises a control analysis module and a signal acquisition device, the signal acquisition device comprises a rack, the rack is provided with a guide rail matched with the end face of the main shaft of the fan to be detected, the guide rail is movably connected with a movable seat moving up and down along the guide rail, the rack is provided with a vertical driving mechanism for driving the movable seat, and the movable seat is provided with a measuring seat moving in the horizontal direction. A horizontal driving mechanism for driving the measuring seat is arranged on the movable seat, and a self-transmitting and self-receiving ultrasonic probe is arranged on the measuring seat; the signal acquisition device further comprises a noise removal module, a feature extraction module and a defect positioning module. The invention further comprises a detection method of the detection system.

The utility model relates to the technical field of wind power tower drums, and discloses a wind power tower drum platform which comprises a tower drum, a fixed platform is fixedly connected to the outer wall of the tower drum, a handrail is fixedly connected to the fixed platform, a maintenance window is formed in the fixed platform, a clamping door is rotationally connected to the maintenance window, and the clamping door is fixedly connected to the outer wall of the tower drum. A climbing ladder is fixedly connected to the side wall of the tower drum, a guardrail is fixedly connected to the climbing ladder, a rope opening is formed in the fixed platform, a rotating platform is fixedly connected to the outer wall of the tower drum, a rotating table is arranged on the rotating platform, a lifting piece is arranged on the rotating table, and a lifting rope is arranged on the lifting piece. A locking piece used in cooperation with the rotating platform is arranged on the rotating platform. When the wind power tower barrel platform device is used, a worker can directly penetrate through a rope opening to descend when using the rope through the rope opening formed in the fixed platform, the worker can descend the rope without climbing over a handrail, and danger brought to the worker due to the fact that the worker climbs over the handrail repeatedly is avoided.

The utility model relates to the technical field of traffic on-duty equipment, in particular to a 5G unmanned defense terminal which comprises a vehicle body, a conical barrel bin, a barrel placing assembly, a barrel collecting assembly and an alarm lamp assembly, the conical barrel bin is installed on the inner bottom wall of the vehicle body, and the right end of the conical barrel bin corresponds to a barrel placing opening formed in the bottom of the vehicle body; the barrel placing assembly and the barrel collecting assembly are both installed on the inner top wall of the vehicle body, the barrel placing assembly is located on the right side of the barrel collecting assembly, the barrel placing assembly corresponds to a barrel placing opening, the barrel collecting assembly corresponds to a barrel collecting opening formed in the bottom of the vehicle body, and the alarm lamp assembly is installed on the top of the vehicle body; the device is simple in structural design, and has the functions of automatically retracting and releasing the conical barrel, handling traffic accidents, propagandizing traffic laws and regulations and polling the traffic light panel.

The invention discloses a corrosion-resistant stainless steel pipe, a preparation method thereof and application of the corrosion-resistant stainless steel pipe in ocean engineering, belongs to the technical field of stainless steel materials, and aims to solve the technical problem that the corrosion resistance and the antifouling property of stainless steel need to be improved in the prior art. The preparation method of the corrosion-resistant stainless steel pipe comprises the following steps: adding epoxy modified titanium dioxide and 2-aminoethyl methacrylate into absolute ethyl alcohol, stirring, adding a hydrochloric acid aqueous solution, heating and reacting to obtain modified titanium dioxide; adding the epoxy modified carbon quantum dots and the modified titanium dioxide into a hydrochloric acid aqueous solution, heating, reacting, and after the reaction is finished, filtering, washing and drying to obtain epoxy modified carbon quantum dot grafted modified titanium dioxide; the corrosion-resistant stainless steel pipe prepared by the preparation method disclosed by the invention not only has good corrosion resistance and antifouling performance, meets the application in ocean engineering, but also has good weather resistance and durability, and is beneficial to prolonging the service life and reducing the cost of later maintenance.

The utility model relates to the related technical field of electric power steering systems, in particular to a dual-motor redundancy steer-by-wire device which comprises a steering shaft, a steering mechanism is arranged in a connecting shell, and a redundancy alarm mechanism is arranged in the connecting shell. According to the dual-motor redundant steer-by-wire device, through the arrangement of the redundant alarm mechanism, when a driver steers, the main controller operates a steering control algorithm and a road feeling feedback algorithm and then controls the main steering motor to drive the steering shaft to control steering of a vehicle, and the auxiliary steering motor is in a standby state or an auxiliary state; when the main controller breaks down, the alarm gives an alarm, then the auxiliary controller continues to work, and then the auxiliary controller controls the auxiliary steering motor to rotate and drives the steering shaft, so that the vehicle can still keep normal steering operation after the main controller breaks down, and the safety and reliability of the vehicle are improved.

The invention relates to the technical field of transformer fault diagnosis, and discloses a transformer multi-source fault diagnosis method and system and a storage medium. The method comprises the steps that fault signals of a transformer are collected in real time through a sensor array and subjected to denoising processing, signal features are classified through a clustering analysis algorithm, detection parameters are adjusted based on classification labels, and the fault prediction probability is further calculated; optimizing a fault response sequence according to the fault prediction probability, and establishing a communication protocol based on the sequence to realize synchronization of a signal acquisition process and a data analysis process; and finally, generating a maintenance scheduling instruction, and generating a fault response scheme based on the fault type and the maintenance priority. According to the method, by dynamically adjusting a response mechanism and optimizing data synchronization, the accuracy and response efficiency of fault diagnosis are remarkably improved, the loss of transformer faults can be effectively reduced, and the operation reliability of power equipment is improved.

The invention relates to a heating assembly and a back flushing system thereof. An adsorption assembly comprises a plurality of adsorption columns; the inlet end of each adsorption column is provided with a hot-blowing back-blowing outlet path; a cold air outlet path is arranged between the inlet end of the hydrogen tank and the outlet end of each adsorption column; meanwhile, a cold air inlet path is arranged between the outlet end of the hydrogen tank and the inlet end of each adsorption column; the inlet end of the heating assembly is connected to the outlet end of the hydrogen tank, and a hot gas back-blowing inlet path is arranged between the outlet end of the heating assembly and the outlet end of each adsorption column. By controlling the heating frequency and temperature of the heating assembly, thermal damage to the adsorbent, the heating unit and the like can be avoided, so that the long-term stability and the service life are improved.

The invention provides a fuzzy testing method and device based on a gene mutation algorithm for potential security vulnerabilities related to data transmission in Android. The device comprises an adapter module, a core framework module and a log module. The method comprises the following main functions of the core framework module: Intent initialization, Intent seed screening, Intent seed mutation and Intent test detection. According to the method, the special fuzzy test is innovatively carried out aiming at the Intent mechanism, and the abnormal Intent input is generated by simulating gene mutation to evaluate the abnormal condition processing capability of the application, so that the coverage and vulnerability discovery capability of the Intent security test are improved, the robustness and security of the Android application are enhanced, and the automation and intelligence of the Intent security test are realized. The method can be widely applied to the fields of security testing, application robustness evaluation, vulnerability mining and the like of mobile applications, and has important theoretical significance and application value.

A three-phase arc high-voltage discharge system for fiber optic fusion splicers is disclosed. The system boosts the power supply voltage through a primary boost circuit; after a flyback converter, the voltage is significantly increased, and then converted into a discharge DC voltage by a diode rectifier circuit. The final voltage of the primary boost circuit and two identical flyback converters are controlled by an adjustable duty cycle PWM wave and signals obtained from AD sampling to generate two sets of discharge DC voltages with a voltage difference of 1.5KV. The system collects the current in the primary boost circuit and flyback converter circuit during fiber optic fusion splicer operation to maintain power within a safe operating range and ensure power stability. Three-phase discharge electrodes are used to form a three-electrode discharge. This system possesses a large-area thermal radiation field, high heat generation power, and a wide controllable discharge power range, thus facilitating the splicing of large-diameter optical fibers. It features low splicing loss and fast splicing speed, shortening splicing time. Suitable for splicing both large-core and small-core optical fibers, it has a wide range of applications and enables workers to promptly repair optical cables.

The utility model discloses a building intelligent wiring concentrator, which comprises a concentrator body, and is characterized in that a plurality of groups of connecting plates are arranged on the lower surface of the concentrator, line concentration holes are formed in the bottom ends of the connecting plates, circular sliding grooves are formed in the centers of the inner walls of the connecting plates, and two groups of through holes are formed in the side surfaces of the upper ends of the connecting plates. A groove is formed in the inner wall of the circular sliding groove, a torsion spring is installed in the groove, one end of the torsion spring is fixedly installed in the inner wall of the connecting plate, a reel is installed in the center of the inner wall of the connecting plate, and the other end of the torsion spring is fixed to the surface of one end of the reel. One end of the torsion spring installed on the inner wall of the center of the connecting plate is fixedly installed on the inner wall of the connector, and the other end of the torsion spring is fixedly installed in one end of the wire winding shaft, so that the tensile force borne by the cable is reduced, and the cable is not prone to breakage.

The application relates to the technical field of artificial solid electrolyte interface (SEI) layers, and discloses a boron-rich single-ion polymer artificial SEI film as well as a preparation method and application thereof. The artificial SEI film is a boron-rich three-dimensional cross-linked network structure with single-ion and self-healing functions; a large amount of boron in the structure can act as a Lewis acid to accelerate the dissociation of lithium salt anions and cations, so that the ion conductivity and migration number of the polymer artificial SEI film are improved; and the dynamic covalent bond behavior of borate ester bonds in the structure endows the polymer with self-healing performance, endows the artificial SEI film with self-healing performance, and improves the safety and electrochemical performance of a polymer lithium metal battery. The boron-rich single-ion polymer artificial SEI film provided by the application has high safety and good electrochemical performance, and can provide a new method for preparing a novel artificial SEI film.

The invention belongs to the technical field of machining planning methods, and particularly relates to a double-robot synchronous machining planning method for internal and external welding of a complex curved surface component, a robot I and a robot II are included, an infrared distance meter is mounted in a lens of a distance detection tracking camera, and a wiring probe is included. According to the method, the movement strategy of the laser welding device with the highest welding efficiency can be analyzed on the premise that the mutual influence degree of internal and external synchronous welding is minimum, the welding strategy with the optimal efficiency can be given for curve paths of different profiles and different situations, and the welding efficiency is greatly improved on the premise that the welding effect is optimal and the influence factors are minimum. In addition, when deviation occurs during installation, a reference equation of a moving path and the range of allowable errors can be changed in a self-adaptive mode, the road sections with unreasonable paths can be recorded, stored and replayed, and repairing treatment can be conveniently and timely conducted.

The invention provides an air pressure detection device which comprises a walking mechanism used for walking on a tube plate of a tubular air preheater; the air pressure detection mechanism comprises an air pressure detection part and an air inlet part which are connected with each other, the air pressure detection part is arranged on the walking mechanism, the air pressure detection part is provided with an air inlet, the air inlet part is provided with an air inlet end and an air outlet end which are oppositely arranged, the air outlet end is communicated with the air inlet, and the air inlet end is provided with an air inlet and extends in the first direction; the air inlet end is movably arranged on the walking mechanism in the first direction, and the air inlet end is used for being embedded into or separated from an opening of a metal pipe of the air preheater; wherein the first direction is perpendicular to the walking direction of the walking mechanism. According to the scheme, the problems that in the prior art, the efficiency and accuracy are low due to the fact that the pressure at the end opening of the metal pipe of the tubular air preheater is detected manually can be solved.

The present invention is applicable to the technical field of gear processing, and provides a processing machine tool for large circular arc tooth line cylindrical gears, including a base, a processing unit is installed on the base, a clamping and rotating unit is installed on the side of the base away from the processing unit, and the top of the clamping and rotating unit clamps the circular arc tooth line cylindrical gear; the base includes two symmetrically arranged upper slide rails and two symmetrically arranged lower slide rails; the processing unit includes a slider slidably connected to the upper slide rails, a processing frame fixedly connected to the slider, a drainage groove symmetrically opened at the top of the processing frame, and two groups of arc sliding knife assemblies installed on the side wall of the processing frame. The device solves the problem that circular arc tooth line cylindrical gears are difficult to process with traditional circular gear processing knives, and achieves the effect of using modularly designed arc tracks to process circular arc tooth line cylindrical gears with larger diameters and higher heights.