5314 results about "Water leakage" patented technology

The invention belongs to the technical field of safety monitoring of subway tunnels, and particularly relates to a subway tunnel water leakage monitoring method and system based on multi-modal data fusion, and the method comprises the steps: obtaining multi-source sensor time sequence data in a subway tunnel, carrying out the feature extraction, and extracting feature parameters related to water leakage; carrying out fusion analysis on the characteristic parameters through a data fusion algorithm, and evaluating the position and severity of water leakage, including extracting time-space correlation characteristics of data by using a dynamic time warping method; after feature extraction is performed on the data set and the space-time correlation features by using a convolutional neural network and a recurrent neural network, feature fusion is performed; and performing anomaly detection and classification on the fused high-level features by using a neural network method to obtain the position and severity of the leakage water. The advanced data fusion technology and the feature extraction algorithm are adopted, various collected data can be analyzed in real time, abnormal conditions can be found in time, and early warning is carried out.

The invention relates to a low-noise water purifier. The water purifier includes a shell, an integrated waterway plate and booster pumps. The integrated waterway plate is fixed to the shell and is connected to water outlets of the booster pumps through pressure stabilizing tanks. The pressure stabilizing tanks are disposed between the booster pumps and the integrated waterway plate. The integrated waterway plate is connected to a plurality of evenly arranged connection tubes and is connected to filter core base assemblies through the connection tubes in a one-one correspondence manner. Beneficial effects of the water purifier are that 1) water knocking abnormal sound of the water purifier is reduced, thus improving user experience, 2) the structure is simple, water leakage is prevented and the production efficiency is high, and 3) replacement of a consumable of the product is simpler and more convenient.

The invention discloses a pipe network water leakage point detection and distance positioning method based on flow analysis. The method comprises the following steps: S1, constructing a flow balance model of a pipeline network; s2, monitoring the flow state of each node of the pipeline network in real time based on the flow balance model constructed in the step S1, and performing preliminary positioning on a leakage point when pipeline leakage is detected; s3, flow gradient analysis and reverse hydraulic fine positioning: in the suspected leakage area locked in the step S2, meter-scale precision positioning of a water leakage point is realized through a flow gradient analysis and reverse hydraulic iterative model; and S4, a plurality of sensor nodes are arranged on the water leakage pipeline determined in the step S3, detection data are collected, the position of a leakage point is determined according to a related positioning fusion algorithm, comprehensive decision making is carried out on the leakage point and the leakage point determined through flow gradient analysis and reverse hydraulic power in the step S3, and finally the accurate position of the pipeline leakage point is judged. The problems of low precision, weak interference resistance and the like of a traditional method can be solved, and accurate detection of leakage points is realized.

The invention relates to the technical field of underground building engineering, in particular to a construction method for a basin type grouting waterproof curtain in an underground limited space. According to the method, through accurate analysis of geological data and reasonable arrangement of the positions and the depths of the grouting holes and the bottom sealing holes, it is ensured that the grouting area is covered comprehensively, the construction precision is improved, through model prediction control, the rate, the concentration and the sequence of grout injection are dynamically adjusted according to the flow and pressure data monitored in real time during grouting, and the grouting efficiency is improved. By means of the method, the diffusion range and compactness of materials can be accurately controlled in the slurry injection process, the gradient descent algorithm is combined with segmented grouting control, a permeation abnormal area existing in construction is recognized and repaired in time, slurry diffusion uniformity and construction efficiency are improved, continuity and integrity of a waterproof curtain are ensured, and the construction efficiency is improved. And through compactness monitoring and corresponding reinforcing measures, the risk of underground water leakage is reduced, construction of the closed structure is combined with arrangement of the drainage well, and the overall reliability of the project quality is improved.

The invention relates to the technical field of alpine sand soil moisture leakage estimation technologies, and particularly discloses an alpine sand soil moisture leakage estimation method which comprises the following steps: S1, multi-source data acquisition: acquiring 0-110cm layered soil moisture content and temperature data by using a cold-resistant soil hydrothermal sensor array, and calculating the moisture content and temperature data of the layered soil; synchronously acquiring Sentinel-2 remote sensing data to extract vegetation coverage and land surface temperature, and recording regional freezing and thawing cycle times and biological crust coverage types; s2, key parameter inversion: calculating a permeability coefficient correction factor kFTC = alpha * N (1 / 2) through a multi-expression programming model based on the freezing and thawing cycle number N. According to the method for estimating the soil moisture leakage amount of the high and cold sand land, the limitation of a traditional model based on steady-state water flow and empirical parameters is broken through by quantifying the dynamic effect of freezing and thawing cycles on the porosity of a 30-80 mm soil layer and the water blocking effect of 23.41%-30.39% when the biological crust coverage degree exceeds 30%; and the influence of the low-temperature freezing and thawing cycle and the biological crust on the leakage mechanism of the high and cold sand land is accurately depicted.

The invention relates to the technical field of water supply pipe network monitoring and computers, and discloses a precise water leakage positioning method and system based on water supply pipe network leakage monitoring, and the method comprises the steps: obtaining pipe network time sequence data and a topological structure, and constructing a structured model; performing multi-source data cross validation according to the model, and determining a deviation source node; historical data of the deviation source node are extracted for simulation, and a confirmation result of the leakage event is obtained; analyzing the space-time gradient change of the upstream pipeline flow, and accurately positioning the coordinates of the water leakage point; the water leakage point coordinate enhancement model is fed back, consistency verification is carried out, and accurate coordinates are obtained; and integrating physical details of the pipe network to generate a final positioning result. By establishing a set of intelligent analysis closed loop from data fusion positioning to feedback verification, the problem of insufficient water leakage point positioning accuracy in the prior art is solved.

The invention relates to liquid leakage detection equipment and a control method of the liquid leakage detection equipment, the liquid leakage detection equipment is used for detecting the liquid leakage condition of a to-be-detected product, the liquid leakage detection equipment comprises a control device, a detection table and a detection device, the detection table is used for bearing the to-be-detected product, and the detection device is arranged on the detection table. The detection device is in wireless communication connection with the control device; the detection device comprises a detection plate and a plurality of sensors distributed on the detection plate, the detection plate is provided with a plurality of detection areas, and at least one sensor is arranged in each detection area; under the condition that the to-be-detected product is arranged on the detection table, the detection plate is located below the gravity direction of the to-be-detected product; the control device is used for determining distribution of liquid on the detection plate according to detection signals of the sensor. Under the arrangement of the embodiment, the liquid leakage detection equipment can automatically detect the position or the component with the water leakage problem on the product to be detected, the speed is relatively high, the accuracy is relatively high, and the error is relatively small.

Disclosed is a lid structure. An upper lid of the lid structure is buckled to a main lid, the upper lid is provided with an opening for a straw to extend out, a locking assembly is disposed between the main lid and the upper lid, and when the straw is bent, the locking assembly can move along a radial direction of the main lid to be inserted and locked in an inner hole in an end portion of the straw, so that water leakage can be avoided when the straw is bent. Due to the fact that when the straw is bent, the locking assembly can move along the radial direction of the main lid to be inserted and locked in the inner hole in the end portion of the straw, the straw is prevented from getting upright due to the bouncing force thereof to result in water leakage.

The invention discloses a tunnel structure water leakage identification method for robot dog detection, and the method comprises the steps: firstly, guaranteeing the safety of an inspection robot dog in photographing a picture through constructing an environment perception algorithm based on the fusion of a laser radar point cloud and a camera laser point cloud; then, mobile shooting is carried out on the water leakage condition of the tunnel structure through inspection mobile robot dog equipment, and data preprocessing is carried out on images; and finally, constructing tunnel internal connection leakage water identification data features, and proposing an improved Yolov8 + HorNet + DASI + CBAM model to identify the missing condition of leakage water. According to the invention, the improved Yolov8 + HorNet + DASI + CBAM model is embedded into the inspection robot capable of carrying the camera, so that the problem that inspection workers are difficult to enter an underground structure is solved, leakage water occurring in an underground complex environment is accurately identified, potential safety hazards caused by leakage water occurring in the underground structure are eliminated, and the operation safety of the underground structure is guaranteed.

The invention relates to the technical field of intelligent detection, and further relates to a non-excavation underground water supply and drainage pipe network leakage detection method based on multi-data fusion. The method comprises the steps that 1, acoustic sensors are arranged along a pipe network at equal intervals, each acoustic sensor collects an acoustic time domain signal generated by pipeline leakage, and then the frequency spectrum intensity of the acoustic time domain signal at the pipeline characteristic frequency is calculated; step 2, calculating a cross-correlation function between two different acoustic sensors according to the frequency spectrum intensity, and determining acoustic delay of the acoustic time domain signal between the different acoustic sensors by searching a peak value position of the cross-correlation function; step 3, according to the acoustic delay, calculating the position of a leakage point by using a sound wave propagation principle; according to the position of the leakage point, the water leakage amount is evaluated in combination with pipeline use data. According to the method, through multi-data fusion and intelligent analysis, effective combination of trenchless, high-sensitivity, accurate positioning and scientific quantitative evaluation is realized.

The invention discloses a geological survey soil sampling device capable of laterally sampling, and relates to the technical field of soil sampling. Comprising a sampling drill cylinder part, and a negative pressure back suction part is installed on the sampling drill cylinder part and used for sucking a soil sample in the sampling drill cylinder part; an acid-base detection piece is mounted on the sampling drill barrel part; a traction control piece is mounted on the sampling drill cylinder part and is connected to the acid-base detection piece; the traction control part is used for pulling the acid-base detection part to switch a detection sample; a detection solution preparation part is mounted in the sampling drill barrel part; negative pressure suction work can be carried out by adopting the suction sleeve, and the structure can be prevented from water leakage when sampling is carried out on collapsed or marsh soil under the action of negative pressure; the problems that in the background technology, an existing soil sampling device is inconvenient to separate and sample a soil sample in the center of a sampler and is also inconvenient to carry out negative pressure permeation prevention are solved.

The invention discloses a vehicle exterior handle waterproof false triggering system and method based on double-frequency-point charging and discharging resonance, and relates to the technical field of automotive electronics. An electrode array composed of capacitance detection electrodes is arranged on the inner side of a vehicle exterior handle to form a vehicle exterior handle capacitance sensor; in a non-interference environment, high-frequency and low-frequency mutual capacitance reference values are collected, and a compensation parameter library is established by associating outer handle shell parameters of the vehicle; a self-capacitance channel of the electrode array is used for detecting proximity signals, high-frequency and low-frequency mutual capacitance signals are collected, and the high-frequency and low-frequency mutual capacitance signals are preprocessed; calling a compensation parameter library to correct the preprocessed high and low frequency mutual capacitance signal, and calculating the mutual capacitance increment and change slope of the high and low frequency mutual capacitance signal; based on the mutual capacitance increment and the change slope, human body touch and water interference are distinguished by analyzing high-frequency and low-frequency signals.

A water leakage monitoring method for a digital twinning system of a coal mine shaft comprises the steps that an RFID antenna and a Twinin-Tag sensor are installed on the wall of the shaft, a monitoring terminal is arranged on the ground, and an RFID reader is arranged at an outlet of the shaft; a shaft monitoring signal is collected in real time through a Twindow-Tag sensor, the shaft monitoring signal is read through an RFID reader, and then shaft monitoring data are obtained by analyzing and processing the shaft monitoring signal; collecting RSSI reading and phase data by using a short time window, and performing state identification by using a decision tree; carrying out coarse segmentation and fine segmentation on the leakage signal, and determining the location of a water leakage point in combination with a change point detection algorithm; and the leakage volume and the leakage rate are estimated. According to the method, the water leakage point can be accurately positioned, the volume and flow velocity information of the leaked water in the shaft can be obtained, so that a reliable basis is provided for subsequent maintenance decision making, and the method is suitable for long-term monitoring operation of the coal mine shaft.

The invention relates to the technical field of bathroom equipment, and particularly discloses a water-storage-free shower head faucet which comprises a shower body, a lower water outlet valve element, a top-spraying water outlet valve element and a shower head water outlet valve element are installed on the shower body and communicate with a lower water outlet head, a top-spraying water outlet head and a shower head water outlet head correspondingly, and the shower head water outlet valve element communicates with the top-spraying water outlet valve element and the shower head water outlet valve element. The lower water outlet valve element, the top spraying water outlet valve element and the shower head water outlet valve element are all communicated with the temperature adjusting water mixing valve element, a drainage channel communicated with the lower water outlet head is arranged in the shower body, and drainage openings are formed in the top spraying water outlet valve element and the shower head water outlet valve element. Residual water in the top spraying water outlet head and the shower head water outlet head can be sequentially drained through the water drainage opening, the water drainage channel and the lower water outlet head under the action of gravity and the constant suction principle, so that no residual water exists in a pipeline, the problem of residual water leakage is solved, a shower pipe and a shower head pipe are prevented from being frozen to crack in cold weather, and the phenomenon that when a user opens a shower faucet, the shower head is damaged is avoided. Cold water comes out for a long time.

The invention discloses a sampling mechanism for water conservancy sand content detection, and belongs to the technical field of sampling mechanisms, the sampling mechanism comprises a supporting platform and a servo motor mounted at the upper end of the supporting platform, the output end of the servo motor is connected with a sampling barrel, an interception hole is formed in the side edge of the upper end of the sampling barrel, and a water leakage cover is fixed in the sampling barrel; a protective bottom cover is arranged at the bottom of the sampling barrel, a drainage pipe is installed on the protective bottom cover, a first air cylinder is installed at the upper end of the supporting platform, the telescopic end of the first air cylinder is connected with a sealing ring through a guide connecting rod, the sealing ring is used for controlling opening and closing of an interception hole, and sand blocking filter cloth is arranged in a water leakage cover. According to the sampling mechanism for water conservancy sand content detection, when a water body sample is sampled, a surrounding water area to be sampled is conveniently stirred, so that the sand content of the water area is equal, and the accuracy of a subsequent detection result is improved.

The invention relates to the technical field of pipeline water leakage monitoring, and discloses an artificial intelligence leakage distinguishing and positioning method for a municipal water supply and drainage pipe network, and the method comprises the following steps: 1, data collection; 2, analyzing a water leakage detection data model; 3, establishing a leakage point positioning model; step 4, alarm and work order generation; and 5, on-site confirmation and maintenance are carried out. By introducing artificial intelligence and big data technologies, all-day real-time monitoring of a pipe network is realized, the efficiency and accuracy of leakage detection are improved, a leakage point positioning algorithm model is established, accurate positioning of a leakage point is realized, the maintenance time and cost are reduced, and meanwhile, the leakage rate of the pipe network is reduced through real-time monitoring and timely maintenance, so that the maintenance efficiency of the pipe network is improved. The production-marketing ratio and the water-saving rate of a water company are improved, an algorithm model is continuously optimized, and the leakage identification and positioning precision is improved, so that the pipe network monitoring requirements in different scenes and complex geological environments are met.

The invention relates to the technical field of subway tunnel safety detection, in particular to a YOLO-V8 subway tunnel water leakage detection method and system based on an improved Transform. The method comprises the following steps: step 02, acquiring point cloud data of a subway tunnel target section, expanding the point cloud data through projection, generating a two-dimensional water leakage image, and preprocessing the two-dimensional water leakage image; step 04, inputting the preprocessed two-dimensional water leakage image into a pre-trained water leakage detection model, and outputting a detection result based on the water leakage detection model; and 06, according to a detection result output by the water leakage detection model, determining the position and severity of the water leakage disease in the target section of the subway tunnel. According to the method, higher water leakage detection robustness identification precision can be kept in a dark and disordered subway tunnel environment, and the method has a high practical value.

The invention relates to a marine weather-tight shutter device and a control method. A shutter with an electric control function is installed in the outward direction of a ventilation and heat dissipation opening of a cabin, a shutter with a water leakage detection function is installed in the inward direction of the ventilation and heat dissipation opening of the cabin, and water pressure reducing dustproof cotton is placed between the shutter with the water leakage detection function and the shutter with the electric control function to form the weather-tight shutter device. The water leakage detection module is connected with a water leakage detection cable in the shutter with the water leakage detection function and a PLC module of an electric control system, and the PLC module is connected with a temperature measuring instrument in a cabin and is connected with the shutter with the electric control function through a sensor and an actuator. According to the weather-tight louver device for the ship and the control method, besides conventional rainproof and heat dissipation functions, the functions of dust prevention, louver opening air volume control, water drainage, water leakage detection alarm, temperature detection, detachable maintenance and the like are further achieved, the air volume of a cabin louver opening is effectively increased, and risks caused by water inflow and too high temperature of a cabin are prevented.

The invention relates to a water purifier. The water purifier comprises a water-steam separator and a heater communicated with the water-steam separator; the water-vapor separator comprises a first-stage water-vapor separation body and a second-stage water-vapor separation body; the first-stage water-vapor separation body and the second-stage water-vapor separation body are respectively provided with a first-stage water-vapor separation cavity and a second-stage water-vapor separation cavity which are communicated with each other; the first-stage water-vapor separation body is provided with a water-vapor separation water inlet and a first air outlet which are communicated to the first-stage water-vapor separation cavity, the second-stage water-vapor separation body is provided with a water-vapor separation water outlet communicated to the second-stage water-vapor separation cavity, and the water-vapor separation water inlet is used for being communicated with a hot water supply source; the bottom wall of the second-stage water-vapor separation cavity is provided with a retention groove which is arranged at an interval with the water-vapor separation gas outlet, a third flow guide pipe is further arranged at a communication port, communicated with the first-stage water-vapor separation cavity, of the top wall of the second-stage water-vapor separation cavity, and the bottom end part of the third flow guide pipe extends into the retention groove. According to the water purifier, the water leakage condition of the water intake of the water purifier at the moment of water break can be avoided.

The utility model relates to the technical field of water and fertilizer drip irrigation, and discloses a water and fertilizer quantitative drip irrigation device which comprises a bottom table, a supporting table is installed at the top of the bottom table, a hollow barrel is installed at the top of the supporting table, an electric push rod is fixedly connected to the rear side of the supporting table, and the output end of the electric push rod penetrates through the supporting table and is fixedly connected with a sawtooth strip. A metal gear is rotatably connected to the inner bottom wall of the supporting table, the sawtooth strip is in meshed connection with the metal gear, a first worm is fixedly connected to the top of the metal gear, a rotating rod is rotatably connected to the right side of the inner wall of the supporting table, and a first worm gear is fixedly connected to the middle of the left end of the rotating rod. According to the irrigation device, the second worm and the second worm wheel are in meshing transmission through rotation, so that the second worm and the blocking piece rotate synchronously, through holes correspondingly formed in the water leakage disc are exposed through rotation of the blocking piece, water and fertilizer are discharged through the water leakage disc for drip irrigation, manual weighing irrigation is not needed, and time and labor are saved.

The invention relates to the technical field of heat distribution pipelines, and discloses a quick-connection water-leakage-proof heat distribution pipeline which comprises a heat distribution pipeline body, and a first flange is fixedly installed at one end of the heat distribution pipeline body. According to the heat distribution pipeline capable of being quickly connected and preventing water leakage, through matched arrangement of the heat distribution pipeline bodies, the first flanges, the second flanges, the L-shaped grabbing plates, bevel gears and hand wheels, when the heat distribution pipeline is used, the first flange plates and the second flanges at one ends of the two heat distribution pipelines are in butt joint, and then the L-shaped grabbing plates can be clamped into grooves in the second flanges by rotating the L-shaped grabbing plates; then a hand wheel is shaken to drive a rotating shaft and a bevel gear to rotate and drive a bevel gear ring and a gear ring which are meshed to rotate at the same time, then the gear ring drives a gear and a threaded rod to rotate, then the threaded rod drives a U-shaped plate to move, and at the moment, an L-shaped grabbing plate fixes a first flange and a second flange together, so that dismounting and mounting are convenient; and the operation difficulty and the construction intensity of workers are effectively reduced.

Methods and systems for automatically mitigating risks of water damage to a property caused by insurance-related events are provided. A smart home controller and / or insurance provider remote processor may analyze data received from a smart device disposed on, within, or proximate to a property associated with monitoring water flow, as well as data received from an insurance provider. If it is determined that an actual or potential risk of water leakage exists, the smart home controller or remote processor may automatically issue commands to the smart device to take actions that mitigate the risk of water damage. The smart home controller may transmit information about the actual or potential water leakage risks and any mitigative actions to an insurance provider. The insurance provider remote processor may interpret the transmitted data and perform insurance activities, such as providing a discount or premium, and / or adjusting an insurance policy associated with the property.

The invention relates to the field of curtain walls, in particular to an innovative curtain wall with an expansion joint, through the arrangement of the expansion joint, the function requirement for expansion of building materials is met, and through the arrangement of a connecting assembly, a first stand column, a second stand column, a first expansion piece, a second expansion piece, a third expansion piece and a panel, the expansion joint is hidden on the rear side of the panel; uniformity of vertical faces of the curtain wall is guaranteed, the effect and quality of the curtain wall are improved, and the problems of heat preservation, heat insulation and expansion joint water leakage of an existing curtain wall are solved. By arranging the connecting assembly, the first stand column and the second stand column, the curtain wall structure is more stable. The problems that a curtain wall expansion joint is arranged on an outer vertical face, waterproof is difficult, and attractiveness, heat insulation and waterproof performance of a curtain wall are damaged are solved.

The invention provides a construction method for comprehensive treatment of seepage water of a deformation joint of a subway tunnel. The construction method comprises the steps of pretreatment of a seepage part, grouting and plugging of an inclined hole, reconstruction of a waterproof layer, brushing of waterproof paint, laying of a waterproof roll, installation of a rubber waterstop, reinforcement of embedded steel bars, construction of a waterproof coating film, installation of a drainage box system, recovery of decoration equipment and the like. The method comprises the steps of mechanical cutting, high-pressure cleaning pretreatment, double-liquid alternate grouting plugging, three-layer gradient waterproof layer reconstruction, high-elasticity waterproof coating brushing, self-adhesion type polymer coiled material laying, telescopic rubber waterstop installation, diamond thin-wall drill bar planting reinforcement, multi-layer waterproof coating construction and integration of a stainless steel drainage box system. And a treatment scheme with strong systematicness and excellent waterproof performance is formed. Compared with a traditional method, gradient construction and long-term effectiveness of the waterproof layer are emphasized, the flexibility and sealing performance of the waterproof structure are enhanced, deformation is effectively dealt with, the structure is reinforced, it is ensured that leaked water is effectively discharged, and the service life of the subway tunnel is prolonged.

The invention discloses a road culvert inner wall damage image detection and traffic capacity evaluation method and system, and relates to the technical field of road engineering detection and computer vision, and the method comprises the steps: collecting multi-source data through an annular camera, a laser section scanner and a mileage encoder carried by a detection robot, and carrying out the panoramic expansion and time-space registration; using a multi-scale attention panoramic segmentation network to identify damages such as lining cracks, joint slab staggering, damage and chipping, steel bar exposure and water leakage; calculating the clearance size and the deposition thickness of the culvert by adopting an ellipse fitting method; according to the method, the culvert detection speed reaches 50 m / h, and the damage detection accuracy reaches 89% or above.

The invention discloses a photovoltaic building integrated installation system, which is characterized in that a waterproof support assembly and a transverse guide rail are arranged, and a plurality of photovoltaic units are fixed on the transverse guide rail in a sliding manner; the walking plates are fixed between the photovoltaic units, so that people can walk to maintain the photovoltaic units; the photovoltaic panel is locked and positioned on the supporting plate through an elastic bottom support, a side baffle and a pressing locker on the photovoltaic unit; transverse positioning assemblies are arranged between the adjacent brackets, and transverse moving pushing of the whole photovoltaic unit can be achieved through manual driving. The photovoltaic unit and the roof can be maintained and cleaned by personnel, and permanent damage caused by the fact that a building cannot be repaired is avoided; the photovoltaic panel arranged inside can be flexibly maintained or replaced, and the operation is simple and convenient; the waterproof and drainage design is achieved, rainwater invasion is reduced as much as possible, and due to the fact that the moisture removal performance of the roof provided with the photovoltaic panel is poor, the roof corrosion progress can be reduced through the design, and the house water leakage risk is reduced.

The invention provides a space-time resolution X-ray diagnosis system, relates to the technical field of X-ray diagnosis systems, aims to realize convenient cathode replacement, no circulating water leakage risk and imaging monitoring function, and relates to a pinhole / slit imaging system assembly and an air chamber type X-ray streak camera. The pinhole / slit imaging system assembly is mounted on a front panel of the air chamber type X-ray streak camera; the air chamber type X-ray streak camera comprises an air chamber and a camera assembly arranged in the air chamber. The camera assembly comprises an X-ray scanning image converter tube installed at the front end of the air chamber. A circulating water refrigerating system in the camera assembly is completely arranged in the air chamber; the pinhole / slit imaging system assembly is used for aiming at the position of a target spot and imaging X-rays emitted by the target spot to a cathode slit of the air chamber type X-ray streak camera, and the X-ray scanning image converter tube is used for achieving time scale light back illumination coupling. The method has the advantages of improving the use convenience and prolonging the service life of the device.

The invention relates to the technical field of power boxes, and discloses a power box with a heat dissipation function, which comprises a box body, an electric appliance module mounting plate is fixedly connected to the inner wall of one side of the box body, a water collecting shell is fixedly connected to the inner walls of multiple sides of the box body, and a pipeline is fixedly connected to the outer side of the water collecting shell. A plurality of first heat conducting plates are fixedly connected to the inner walls of the multiple sides of the water collecting shell, a water collecting box is fixedly connected to the bottom of the water collecting shell, and water leakage holes communicating with the interior of the water collecting box are formed in the positions, located at the bottom, of the two sides of the water collecting shell. According to the invention, water drops generated by pipeline condensation can be collected to prevent the water drops from entering the power supply box to cause short electric appliances in the power supply box, and water in the water tank can be rapidly cooled to improve the cooling efficiency of the water in the water tank, so that the heat dissipation efficiency of the power supply box is improved, and the service life of the power supply box is prolonged. And auxiliary heat dissipation can be carried out on the power box, so that the heat dissipation effect of the power box is improved.

The invention provides a double-control mixing faucet valve element and a faucet, the double-control mixing faucet valve element comprises the following structures: a fixing assembly, the fixing assembly is provided with a water supply channel and a water outlet channel, the double-control mixing faucet valve element further comprises an adjusting assembly, a mounting cavity is formed in the fixing assembly, and the adjusting assembly is provided with a manual control water mixing cavity, an electric control water mixing cavity and a plugging part; the adjusting assembly moves in the mounting cavity, one of the manual control water mixing cavity, the electric control water mixing cavity or the plugging part is selected to be in butt joint with the water supply channel, and the double-control mixing faucet valve element is switched among a manual control mode, an electric control mode and a closing mode. The manual control mode and the electric control mode cannot control water outlet, and the situation that in the prior art, when an electromagnetic valve is damaged, a faucet leaks water is avoided. A plurality of pipe fittings are not needed for connection, the hidden danger of water leakage caused by untight connection of the pipe fittings is avoided, the overall structure is more compact, and meanwhile the complexity of later maintenance is reduced.

The invention provides a construction method for back-wall pea gravel hydraulic reclamation of a shield type TBM and a supporting structure of the shield type TBM, and relates to the technical field of lining supporting structures of tunnel shield construction.The construction method for back-wall pea gravel hydraulic reclamation of the shield type TBM comprises the following steps that a duct piece is prefabricated, and steel rings are symmetrically welded to the two sides of the duct piece in the width direction of the duct piece; preparing a groove roller; the screen is installed in a groove of the groove roller, the vibration machine is installed on the outer side of the groove roller, the groove roller and the fixing support with the telescopic rod are installed on the outer side of the pipe piece, and the output end of the telescopic rod is connected with the outer side of the screen; a plurality of pipe pieces are assembled into an annular assembly; and blow-filling pea gravels. According to the method, the problem of uneven hydraulic reclamation of the pea gravels can be solved, the phenomenon that due to uneven hydraulic reclamation of the pea gravels, the pressure of the pea gravels with insufficient compactness transmitted to surrounding rocks on the duct pieces is too high is avoided, and tunnel water leakage diseases caused by cracks of the duct pieces are prevented.