24823 results about "Water pipe" patented technology

The invention discloses a digital intelligent management method and system for hydraulic engineering construction, particularly relates to the technical field of hydraulic engineering construction management, and is used for solving the problems of regulation lag and insufficient environmental disturbance adaptability of an existing method under the action of multi-physics field coupling. According to the method, a concrete three-dimensional temperature field model is established, initial regulation and control parameters are generated, and a heat conductivity coefficient under the seepage influence is corrected based on space-time relevance of pore water pressure and temperature data; the constraint boundary is dynamically adjusted in combination with the construction progress and the material strength curve, a cooling water pipe coordinated regulation and control matrix is constructed, and target flow instructions of space differentiation are generated through the included angle between the distance and the water flow direction; setting a lag time threshold and optimizing an execution time sequence according to the thermal inertia parameter, splitting the threshold and allocating a weight coefficient when the environmental wind speed suddenly changes, and finally updating the model parameter and the regulation and control instruction; accurate temperature control response and abnormal heat conduction suppression under multi-field coupling are achieved, and the structural safety and construction efficiency under complex working conditions are improved.

The invention discloses a mass concrete intelligent temperature monitoring system and method, and the system comprises a high-precision temperature sensor, a data collection node which is connected with the high-precision temperature sensor and is responsible for carrying out the primary processing and integration of temperature data collected by the sensor, and a data collection terminal which serves as a data convergence center of the whole monitoring system and is used for collecting the temperature data. The intelligent temperature monitoring system comprises a plurality of data acquisition nodes which are connected in a wired or wireless communication mode, a data monitoring platform which operates at a server end and is a core control and management unit of the whole intelligent temperature monitoring system, and a circulating water cooling control system which is composed of a cooling water pump, a cooling tower, a cooling water pipe network, a temperature control main station and the like. The cooling water pipe network is embedded in the concrete in advance to form a closed water circulation loop; the temperature control master station receives a cooling control instruction sent by the data monitoring platform, and adjusts the rotating speed of a cooling water pump and the working state of a cooling tower according to the instruction, so that the flow and temperature of cooling water in a cooling water pipe network are accurately controlled; through flowing of circulating water in the concrete, redundant heat in the concrete is taken away, effective regulation and control over the temperature in the concrete are achieved, key indexes such as the highest temperature and the temperature gradient of the concrete are controlled within a reasonable range all the time, and concrete cracks caused by temperature stress are avoided.

The present invention discloses a handheld spray fan, the handheld spray fan includes a housing assembly, fan assembly, and spray device. The housing assembly features a handheld part, an air duct at one end, and an air outlet cover at the end of the air duct with a through-hole and multiple air outlet holes. The fan assembly is installed within the air duct, and the spray device comprises a water tank, water pipe, mounting seat, fiber water guide, and atomizer. The water tank is positioned within the housing assembly, the water pipe connects the water tank and the mounting seat, the mounting seat is located at the through-hole, and the atomizer is installed on the mounting seat and exposed through the through-hole. The fiber water guide extends from the water tank to the atomizer, ensuring continuous water supply for stable misting.

Disclosed is a multifunctional outdoor fan. The multifunctional outdoor fan includes a fan base, a fan support, and a fan head. The fan head is provided with a rotating shaft, fan blades mounted on the rotating shaft, and a fan grille mounted outside the fan blades. The fan grille is provided with a water tank, the water tank is provided with a water injection port, and the water injection port is connected to a water tank cover. The rotation shaft is provided with an atomization assembly, the atomization assembly is in communication with the water tank through a water tube, the water tank supplies water to the atomization assembly through the water tube, and the atomization assembly is provided with an atomization port.

The invention relates to the technical field of water affair pipe network operation and maintenance, in particular to an intelligent analysis processing and decision support method for mass data of an intelligent water affair integrated platform based on a GIS (Geographic Information System) and the Internet of Things. According to the method, GIS topology and data of the internet of things are fused, the problems that the estimation deviation of the influence range of traditional pipe explosion is large, and the valve closing instruction lacks accuracy are solved, and the valve closing effectiveness is verified. The pipe explosion emergency response efficiency is improved, the water resource waste is reduced, the water supply stability is guaranteed, and the method is suitable for urban water refinement management.

The invention discloses the technical field of constructional engineering and intelligent control, and relates to a concrete hydration heat self-adaptive control method and system based on digital twinning. The method comprises the following steps: S1, constructing a concrete finite element model, simulating a hydration heat process, and outputting simulation data of temperature and temperature stress; s2, based on the analog data, optimizing the arrangement scheme of the cooling water pipe and the sensor through a composite convolutional neural network; s3, arranging and collecting real-time temperature and temperature stress data according to the scheme; s4, in combination with simulation and real-time data, predicting temperature change by adopting a BP neural network and a long-short term memory network, and constructing a dynamic prediction model; s5, based on the prediction result and the real-time data, constructing a WebGL digital twinborn platform, visualizing the data and correcting a prediction model; and S6, dynamically adjusting parameters of the cooling water pipe according to a correction result to realize hydration heat self-adaptive control. The invention further provides a system for realizing the method, the concrete temperature and the temperature stress can be accurately controlled, and the engineering structure safety and the quality control efficiency are improved.

The invention belongs to the technical field of machining equipment feeding, and particularly relates to punch press feeding equipment with an adjusting function, which comprises a material distribution bin and a punching lathe arranged on one side of the material distribution bin, and is characterized in that an outer frame bracket is arranged at the top of the material distribution bin in a sliding manner, a material frame is arranged in the outer frame bracket, and a material guide plate is arranged in the material distribution bin in a sliding manner; a material guiding plate is arranged on the base, a discharging adjusting plate is arranged at the top of the material guiding plate, a material distributing plate is arranged at the top of the discharging adjusting plate, a supporting plate is arranged at the bottom of the material guiding plate, and a mounting block is arranged on one side of the material guiding plate. And through arrangement of structures such as a mounting block and a detection block, the diameter and length of the bar can be detected, so that the stamping quality of the bar is improved, the bar can be cooled through arrangement of a water pipe and a water tank, and workers are prevented from being burnt by generated high temperature.

The utility model relates to a heat dissipation structure of a linear motor based on a T-shaped vapor chamber, and relates to the technical field of heat dissipation of linear motors, the linear motor comprises a base, a stator and a rotor which are matched with each other are arranged on the base, and the rotor is connected with a sliding block and arranged on the stator through a linear guide rail. The rotor comprises T-shaped vapor chambers, heat conduction gaskets, rotor iron cores, windings, cooling water pipes, silicon steel sheets and liquid cooling plates, the windings are arranged on rotor iron core teeth, through holes are formed in the positions, between the adjacent windings, of the iron cores up and down, the T-shaped vapor chambers are vertically and symmetrically inserted into the iron core holes, and the surfaces of the lower ends of the T-shaped vapor chambers are attached to the adjacent windings; a heat conduction gasket is laid on the upper portion of the T-shaped soaking plate and connected with a liquid cooling plate with a built-in cooling water pipe, and the condensation end of the T-shaped soaking plate, the heat conduction gasket, the cooling water pipe and the liquid cooling plate are all arranged in a silicon steel sheet groove. According to the utility model, heat in the winding and the iron core can be uniformly distributed, and the heat dissipation efficiency of the linear motor is improved.

The invention discloses a mixed-flow water turbine draft tube vortex strip characterization method based on a pressure pulsation signal, and the method comprises the following steps: collecting the pressure pulsation signal of a draft tube during normal operation, preprocessing the signal, and predicting the pressure pulsation through a modal decomposition method; a sample pressure pulsation prediction error is calculated through a signal actual value and a prediction value, a threshold value is calculated in a self-adaptive mode through an SPOT algorithm, and early warning is conducted once when a monitoring index value exceeds the threshold value; chaos characteristic parameters of the primary early warning pressure pulsation signals are calculated; and a vortex strip early warning coefficient is defined by combining the chaos characteristic parameters of the pressure pulsation signals in the normal operation state, and when the early warning coefficient is larger than a threshold value, it is judged that an unstable vortex strip exists in the draft tube. The method is simple to operate, does not depend on a complete fault data set, and solves the problem that the flow state of the draft tube of the mixed-flow water turbine is difficult to accurately and quickly recognize in the prior art.

The invention provides a concrete regulation and control system and method integrating heat recovery, spraying and gradient control, and relates to the technical field of concrete curing, and the concrete regulation and control system comprises a temperature sensing element and a humidity sensing element which are mounted on reinforcing steel bars in a concrete structure in a layered manner in the depth direction; the cooling water circulating system comprises a water pump and a cooling water pipe, and the cooling water pipe is arranged in the mass concrete structure and externally connected with a variable frequency circulating pump; the double-water-tank system is matched with the heater to realize graded regulation of water temperature; the automatic spraying system is connected with the integrated electric heating module; the heat recovery and circulation assembly is connected with an outlet of a cooling water pipe in the concrete, recovers concrete hydration heat brought out by the cooling water pipe, and transfers heat of high-temperature cooling water with the temperature being 50 DEG C or above to the phase change heat storage tank; the central control unit continuously receives and records monitoring data of the temperature sensor and the humidity sensor and analyzes the monitoring data in real time, and when the temperature gradient or the humidity gradient exceeds the limit, a gradient field control instruction is automatically triggered to achieve energy efficiency maximization.

The present application belongs to the technical field of mass concrete construction, and aims to solve the problem of high thermal resistance and slow heat dissipation of traditional cooling pipe laminar bottom layer, and discloses a gravity dam construction cooling water pipe based on destruction of laminar bottom layer and a method thereof. The cooling water pipe comprises a plurality of series water pipe units, each water pipe unit comprises a steel pipe, a flexible spring hose is arranged in the steel pipe, and the spring hose forms a spiral protruding turbulence structure along the inner wall of the steel pipe; the hose is fixed by pointwise anchoring and outer wall surface bonding with glue, and a ring is arranged at both ends for limiting and assisting turbulence. The present application breaks through the thermal resistance of laminar bottom layer, greatly improves the hydration heat conduction efficiency, is convenient to construct and has durable structure, and is suitable for mass concrete temperature control requirements.

A temperature-rainfall-reservoir water combined testing system for a permafrost landslide model includes a tempered glass case with a permafrost landslide model and reservoir water provided therein; a temperature control system provided on the tempered glass case and including an incubator temperature control module, a landslide mass rear edge water tank temperature control module and an air circulation temperature control module; a seepage control system configured to realize seepage of the permafrost landslide model, and form the reservoir water in front of a landslide mass; a rainfall control system including a water tube, a flow controller and a nozzle, where the nozzle is provided in the tempered glass case, and located above the permafrost landslide model; and a multi-field monitoring system including a temperature sensor, a pore water pressure gauge, a moisture meter and a grating strain gauge that are provided in the permafrost landslide model.

The invention discloses a full-automatic cold pilger mill, and relates to the technical field of cold pilger mills, the full-automatic cold pilger mill comprises a case and a cold rolling assembly arranged in the case and used for rolling pipe fittings, the case is internally provided with a driving assembly used for driving the cold rolling assembly to work, and the full-automatic cold pilger mill further comprises a water cooling assembly arranged in the case and used for cooling the rolled pipe fittings; the water cooling assembly comprises a water spraying pipe movably connected into the machine box, a telescopic pipe is movably connected into the water spraying pipe, the telescopic pipe and the cold rolling assembly are connected through a fixing base, the characteristic that the machine frame reciprocates left and right is utilized, a cooling liquid outlet moves from right to left, and therefore the spraying range of pipe fittings is enlarged, and the spraying efficiency is improved. Meanwhile, the cooling liquid can be sprayed on the surface of the pipe fitting from the periphery, so that the spraying range of the cooling liquid on the surface of the pipe fitting is further expanded, the surface of the pipe fitting is cooled uniformly, the spraying of the cooling liquid is free of omission and dead angles, the cooling effect of pipe fitting rolling is ensured, and the cold rolling quality of the pipe fitting is ensured.

A water tank wire drawing machine for metal wire machining comprises a water tank and a wire drawing mechanism, a cooler is arranged in a first water tank, and the cooler comprises a cooling water pipe arranged above a wire drawing cone pulley and a wire drawing die and a flow guide component arranged below the wire drawing cone pulley and the wire drawing die; the cooling water pipe is used for spraying cooling liquid to the upper side of the wire drawing cone pulley and the upper side of the wire drawing die, the cooling liquid is used for cooling the parts, making contact with the wire, of the wire drawing cone pulley and the wire drawing die, meanwhile, the cooling liquid can also achieve the lubricating effect, and the abrasion condition of the wire in the wire drawing process is further reduced; the cooling liquid near the wire drawing cone pulley and the wire drawing die can flow downwards and be guided out through the shape structure of the flow guide component, the flowing speed of the cooling liquid near the wire drawing cone pulley and the wire drawing die can be increased, and the cooling effect on the wire drawing cone pulley and the wire drawing die is improved.

Chinese yam peeling and cleaning integrated equipment comprises a machine box with an opening in the upper end, a fixedly-connected conveying table is arranged at the right end of the machine box, peeling scraper assemblies and conveying rollers are sequentially arranged in the machine box in a crossed mode in the conveying direction of Chinese yams, the conveying rollers are arranged in pairs up and down, and a cover plate is hinged to the upper end of the machine box; a water pipe is arranged at the upper end of the cover plate, a plurality of detachable spray head assemblies are arranged on the water pipe, and water inlet holes are formed in the positions, opposite to the spray head assemblies, of the cover plate. The transmission stability of the Chinese yams is ensured; and by arranging a plurality of peeling scraper assemblies, Chinese yams with different sizes can be peeled, and it can be guaranteed that Chinese yam peels cannot be left on the Chinese yams.

The present invention relates to a steam generator, which includes: a steam shell forming an outer shape and having a space for storing water formed therein; a steam heater, which is arranged inside the steam shell and generates steam by heating the water stored inside the steam shell by applying power; a water pipe, which is arranged on one side of the circumferential surface of the steam shell and is formed with a connecting hole, wherein the connecting hole allows water to flow from the outside into the interior of the steam shell, or allows water inside the steam shell to flow out to the outside; an air intake portion, which is arranged on the upper surface of the steam shell and is formed with an air intake port, wherein the air intake port allows air to flow into the interior of the steam shell; and a steam discharge portion, which is arranged on the upper surface of the steam shell at a predetermined interval from the air intake portion and is formed with a steam discharge port for discharging steam generated inside the steam shell and air flowing in through the air intake portion to the outside.

The invention discloses a salt cavern gravity compressed air energy storage system which comprises a salt cavern, a vertical shaft is vertically formed in the top of the salt cavern and communicated to the ground surface, a sealing film is arranged on the side wall of an inner cavity of the salt cavern and divides the salt cavern into a water storage cavity and an air storage cavity, and the bottom of the air storage cavity is connected with one end of an air pipe. A piston is arranged in the vertical shaft, a gravity block is arranged at the top of the piston, a water pipe communicated with the water storage cavity is arranged at the bottom of the water storage pool, and a water conservancy generator set is arranged on the water pipe. Liquid gravity is matched with salt cavern gas storage, liquid can be matched with the irregular shape of a salt cavern, construction is reduced, energy density is increased, construction difficulty can be reduced through ground surface construction, the problem that a traditional compressed air energy storage system is large in investment cost is solved, and meanwhile the problem that salt cavern resources are reused is solved.

The utility model discloses the field of agricultural machinery, and particularly relates to a spraying machine tool and an all-terrain spraying vehicle, the spraying machine tool comprises a hollow shell, a visual identification device and a spraying device are arranged on the two sides of the shell in the width direction respectively, the visual identification device comprises a supporting rod, the supporting rod extends in the height direction of the shell, and the spraying device is arranged on the supporting rod. A camera is arranged at one end of the supporting rod, the other opposite end of the supporting rod is connected with the shell, the spraying device comprises a water pipe, the water pipe extends in the height direction of the shell, a signal control switch valve is arranged on the water pipe, a spraying pipe is connected to the top of the water pipe, and a plurality of nozzles are arranged on the spraying pipe at intervals. According to the utility model, the visual identification device and the spraying device are arranged, and the visual identification device is used for judging whether spraying is carried out or not, so that the pertinence is stronger during spraying, the investment of labor cost can be reduced, the physical and psychological health of staff is greatly maintained, and the spraying device is simple in structure and convenient to popularize.

The utility model relates to a filter assembly, a tail gas treatment device and boron diffusion production equipment, the filter assembly comprises a filter element and a filter cartridge, the filter element is provided with a first end and a second end along a first direction, and the filter element is provided with a plurality of filter through holes along the first direction; the filter element is positioned in the filter cartridge; the filter cartridge is provided with an air inlet and an air outlet; the air inlet is communicated with an exhaust pipe of a vacuum furnace of the boron diffusion production equipment, and the air outlet is communicated with a tail exhaust pipe of the boron diffusion production equipment; tail gas exhausted by the exhaust pipe can enter the filtering through hole through the gas inlet and the first end in sequence, and can be exhausted to the tail exhaust pipe through the second end and the gas outlet in sequence after being filtered; a plurality of water injection blind holes extending in the first direction are formed in the filter element, and openings of the water injection blind holes are formed in the second end; a first water injection port is formed in the filter cartridge and is communicated with the opening through a water pipe; and the filter element is made of a porous material. According to the technical scheme, harmful substances such as B2O3 in the tail gas can be fully and effectively removed, and the filtering efficiency is high.

The invention relates to the technical field of aquaculture equipment, and discloses a rainbow trout fry rearing special constant-temperature hatching device which comprises a heat preservation box, a constant-temperature mechanism, a tray mechanism, a top cover assembly and a control panel. The constant-temperature mechanism comprises an S-shaped heat conduction water pipe, a bidirectional water pump, an upper-end heating module and a lower-end refrigerating module, the heat conduction water pipe preheats or precools buffer water flow, the bidirectional water pump rotates forwards and backwards to control the water flow to flow up and down, and natural convection of water in the box is promoted by combining'heat flow rising and cold flow falling ', so that water temperature fluctuation is greatly reduced, and compared with an existing device, the temperature difference is remarkably reduced; the rainbow trout embryo development stable temperature environment is ensured. The folding push handle is turned over to the upper end, the linkage splash-proof grid automatically blocks the top cover vent hole, and water is prevented from being splashed when the device moves; a temperature and dissolved oxygen amount sensor is arranged on the side wall of the heat preservation box, a bubble generator at the bottom accurately adjusts dissolved oxygen, air holes are opened for ventilation when the splash-proof grids are fixed, and it is ensured that the internal environment is moderate.

The invention provides a surge bin dehumidification system, which relates to the field of intelligent dehumidification and comprises a water tower, a dehumidifier, a cooling water pipe, a humidity sensor and a central control system. The central control system obtains a time queue of real-time humidity values, compares the real-time humidity values with preset expected humidity values, and then carries out segmentation and local time sequence mode coding, so that brake starting judgment of the dehumidifier is achieved according to humidity deviation dynamic causal transmission representation between humidity expected deviation local time sequence mode characteristics. Therefore, the accurate expected humidity value is set, and the time sequence trend and mode of the actual humidity deviation change can be accurately identified, so that an over-sensitive response mechanism is avoided, and the control precision is improved. And meanwhile, misjudgment caused by noise is reduced, so that more efficient, more accurate and more energy-saving humidity control is realized.

The invention provides a numerical simulation method, system and equipment for the calcium dissolution process of a concrete water pipe and a medium, and belongs to the technical field of computer aided design optimization. According to the calcium dissolution mechanism under flowing water erosion, the law of conservation of mass and the Fick second law, a variable coefficient transmission model of the dissolution process of the calcium ions in the water delivery concrete pipe is established by combining the solid-liquid equilibrium relationship of calcium in the concrete, and the model not only considers the influence of porosity and pore tortuosity change caused by dissolution on the diffusion coefficient of the calcium ions in the concrete, but also considers the influence of porosity and pore tortuosity change caused by dissolution on the diffusion coefficient of the calcium ions in the concrete. The influence of pipe inner wall boundary movement caused by concrete calcium corrosion damage at different water flow speeds on the calcium ion transmission process is also considered; and carrying out numerical solution on the established variable coefficient calcium ion dissolution transfer equation by using a finite difference method. Through verification, a prediction result of the variable coefficient transmission model is consistent with a test result and an existing literature test result, and the calcium corrosion evolution rule and the service life of the underground concrete water pipe can be accurately evaluated.

The invention provides a cooling and temperature control construction method for large-volume radiation-proof concrete, and relates to the technical field of concrete curing. Comprising the steps of manufacturing and installation of mass concrete reinforcing steel bars, laying of mass concrete cast iron circulating cooling water pipes, installation of the mass concrete wall integrated temperature control formwork, layered pouring of mass concrete, cooling water pipe circulating water cooling and plate face water storage maintenance, curing of the mass concrete wall integrated temperature control formwork and center construction of the mass concrete. Monitoring the temperature of the surface layer and the like. The device has the characteristics of reusability, energy conservation and high efficiency.

The invention discloses cooking equipment which comprises a cooking device provided with a steam inlet; the steam device comprises a combustion chamber, a combustor and a water pipe, the combustor is arranged in the combustion chamber and is configured to be heated through fuel gas, at least one part of the water pipe is arranged in the combustion chamber and is matched with the combustion chamber in a heat exchange mode, and the water pipe is connected with the steam inlet so as to supply steam to the cooking equipment. According to the cooking equipment disclosed by the embodiment of the invention, the steam can be generated by heating the fuel gas, and the steam is provided for the cooking device, so that the cooking of the steam device is facilitated. Steam is generated through gas heating, the limitation of electric heating can be broken through, and the power of the steam device can be greatly improved.

To provide a deep well filtering structure that effectively prevents the subsidence and collapse of the well wall. [Solution] The deep well filtration structure of this invention includes a surface loess layer 1 and a well channel 7, with a concrete well side 8 poured onto the surface of the surface loess layer, a reinforced concrete permeable pipe and a reinforced concrete solid pipe 10 installed in sequence inside the well channel, a well pipe pallet 6 placed at the bottom end of the well channel, and below the surface loess layer, in sequence, a gravel-mixed loess layer 2, a gravel layer 3, a crushed stone-mixed loess layer 4 and an underground loess layer 5, and a clay ball-filled sealing layer 9 filled between the surface loess layer, the gravel-mixed loess layer and the reinforced concrete solid pipe.

The invention discloses a building energy management method based on big data, and relates to the technical field of building energy management, and the method comprises the steps: collecting building environment, room cold and hot demands and historical energy consumption data through a long and short term memory network LSTM in combination with Bayesian optimization, constructing a short-term and long-term cold load prediction model, and dynamically adjusting a cold and hot water supply strategy; the cold and hot water supply adjusting part enables cold and hot water conveying to accurately meet different room requirements on the basis of cold supply optimization parameters in combination with variable-frequency water pump regulation and control, water supply flow optimization of all floors and cold and hot water pipe network balance adjustment; an error feedback correction mechanism is introduced, the deviation between a predicted value and an actual load is monitored in real time, if the error exceeds a threshold value, an LSTM model is automatically adjusted, cooling parameters are updated, the prediction precision is improved, cooling and heating load regulation and control errors are reduced, and the influence of temperature fluctuation on user experience is reduced; aiming at different room temperature control requirements, personalized energy supply is carried out based on real-time temperature and humidity, air velocity and user preference.

The invention relates to the technical field of image data processing, in particular to a water heating pipeline maintenance detection method and system.The method comprises the steps that firstly, pipeline time sequence image data, pipeline feature image data, pipeline thermal imaging image data and pipeline common imaging data of an area, needing to be detected, in a floor heating water pipe in a building are collected; constructing a water heating pipeline image data set; secondly, identifying the water heating pipeline image data set by constructing a water heating pipeline abnormal state detection model to obtain a pipeline deformation abnormal coefficient, a pipeline texture abnormal coefficient and a pipeline temperature abnormal coefficient; and finally, according to the pipeline deformation abnormal coefficient, the pipeline texture abnormal coefficient and the pipeline temperature abnormal coefficient, generating a water heating pipeline abnormal coefficient through multi-modal data fusion. And the water heating pipeline is maintained according to the abnormal coefficient of the water heating pipeline, so that the maintenance efficiency of the water heating pipeline is improved.

The invention discloses a pipeline air tightness detection system and method, and relates to the technical field of pipeline detection, the pipeline air tightness detection system comprises a magnetic field control and adjustment assembly, a pipeline adjustment assembly, a front-end pipeline internal detection assembly and a flexible adjustment rod, and the whole system is composed of the magnetic field control and adjustment assembly, the pipeline adjustment assembly, the front-end pipeline internal detection assembly and the flexible adjustment rod. According to the invention, modularized installation is realized, magnetic particle suspension liquid detection is utilized, pipeline leakage points are positioned through magnetic field changes, ultrasonic detection is utilized, internal structure defects and wall thickness changes of the pipeline are detected, a microstructure is detected through a quantum tunneling effect, a multi-dimensional detection method is formed, the pipeline condition is comprehensively evaluated, and the whole device is simple and convenient to operate, high in detection precision and high in reliability. The device is simple in structure and easy to operate by workers, can quickly detect a water pipe, an air pipe and an oil pipe, timely discover tiny manufacturing defects and improve the quality and safety of the whole vehicle in the fuel vehicle production process, and assists maintenance personnel to efficiently formulate a scheme, shorten the maintenance time and reduce the cost in the maintenance process.

The utility model discloses a double-cooling welding gun which comprises a welding gun head, a welding cable connected with the welding gun head and a wire feeding spring located in the welding cable and the welding gun head, the welding gun head comprises a gun shell and a gun neck located in front of the gun shell, and a double-welding-wire contact tube connected with the wire feeding spring is arranged at the front end of the gun neck. A gas insulation pipe and a water insulation pipe connected to the gas insulation pipe in a sleeving mode are installed in the gun neck, a moving space for the wire feeding spring to move is formed in the gas insulation pipe, an air cooling channel is formed between the gas insulation pipe and the water insulation pipe, and a water cooling channel is formed between the water insulation pipe and the inner wall of the gun neck. An air inlet pipe, a water inlet pipe and a water return pipe which are connected to the connector are arranged in the welding cable, so that the cooling effect on the welding gun is improved, and the welding quality is guaranteed.

The utility model relates to the technical field of biodegradable materials, and discloses an extruder cooling device for production of biodegradable material products, which comprises an extrusion pipe, a circulating cooling part, a liquid inlet pipe, a liquid outlet pipe, a water tank, a circulating pump, a filling port and a cooling-water machine, the liquid inlet pipe flange is connected to one end of the circulating cooling piece, the liquid outlet pipe flange is connected to the other end of the circulating cooling piece, the water tank is arranged at the other end of the liquid outlet pipe, the circulating pump is fixedly connected to the top of the water tank, and the other end of the liquid inlet pipe is connected with a top flange of the circulating pump. According to the extruder cooling device for producing the biodegradable material products, the cooling pipes are uniformly distributed outside the extrusion pipe, so that cooling liquid is input into the cooling pipes through the water distribution pipes to ensure uniform cooling of the extrusion pipe, the cooling effects of all positions of the extrusion pipe are consistent, and the condition of non-uniform cooling is avoided.