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82 results about "Tube drain" patented technology

Voiceprint recognition detection method for internal defects of drainage pipeline

The invention belongs to the technical field of drainage pipeline detection, and particularly relates to a voiceprint recognition detection method for internal defects of a drainage pipeline, and the method comprises the following steps: S1, collecting sound signals in the pipeline through an acoustic sensor array; s2, preprocessing the collected sound signals, wherein the preprocessing comprises noise filtering, signal enhancement and segmentation processing; s3, extracting time domain, frequency domain and time-frequency domain features of the sound signals, and constructing voiceprint fingerprints; s4, establishing a defect classification model based on the deep neural network, and identifying different types of pipeline defects; s5, carrying out confidence evaluation on the detection result, and determining the position of the defect in the pipeline; s6, outputting a detection result and carrying out graded alarm; according to the method, various defect forms of cracks, blockage, damage and the like of different degrees of the drainage pipeline can be recognized, the recognition accuracy of the internal defects of the drainage pipeline can reach 95% or above through multi-dimensional voiceprint feature extraction and a deep learning algorithm, and continuous monitoring and real-time alarming can be achieved.
Owner:NANJING UNIVERSTIY SUZHOU HIGH TECH INST

Vibrating type drain pipe crystal removal device

The invention discloses a vibration type drain pipe crystal removal device, and particularly relates to the technical field of pipeline crystal removal, the vibration type drain pipe crystal removal device comprises a cylindrical main machine and a guide climbing frame, one end of the cylindrical main machine is in bolted connection with a propeller, and one end of the cylindrical main machine is provided with a crystal cleaning assembly used for layering and disintegrating crystals in a pipe; the crystal cleaning assembly comprises a conical guide frame and a driven guide ring frame which are movably connected to one end of the cylindrical main machine; a plurality of driving vibration rods and a plurality of driven vibration rods are respectively arranged outside the conical guide frame and the driven guide ring frame; according to the device, crystals in a pipeline are knocked in advance through the driving vibration rod and the driven vibration rod, the knocking target of the driving vibration rod and the driven vibration rod is a crystallization layer instead of a pipe wall, impact force is absorbed by the crystallization layer and does not directly act on a pipe wall body, and after the crystals are knocked to be loose, planing can be completed by the scraping tooth disc without applying too large force; and the scraping tooth disc further planes the fragments into fine chippings, so that the pipeline crystal removal efficiency is improved.
Owner:GUANGDONG UNIV OF TECH

Drainage pipeline siltation intelligent diagnosis method fusing improved IKAN and Transform network

The invention belongs to the field of drainage pipeline siltation intelligent diagnosis, and particularly discloses a drainage pipeline siltation intelligent diagnosis method fusing an improved IKAN and a Transform network, and the method comprises the steps: collecting a drainage pipeline inlet and outlet flow and flow velocity data sequence, and carrying out the standardization preprocessing; an improved IKAN module based on adaptive learning is constructed; performing local feature extraction by using a one-dimensional convolutional layer; the feature data is mapped to a high-dimensional token space through a Tokenization module; the method comprises the following steps of: constructing a multi-layer Transform network fused with an improved IKAN (Internet Kalman Area Network); and a double-task learning framework is adopted, and regression prediction results of the deposition thickness and the deposition length and a classification result of whether deposition exists are output at the same time. The optimal performance is obtained when the time step is 15 seconds, the RMSE, the MSE and the MAPE reach 0.282, 0.248 and 0.185 respectively when the noise sample proportion is smaller than 50%, and the method has high robustness and prediction accuracy. According to the method, the accuracy and efficiency of drainage pipeline siltation diagnosis are remarkably improved, and a new technical path is provided for intelligent operation and maintenance of an urban drainage pipe network.
Owner:ZHENGZHOU UNIV

Endoscopic detection equipment for drainage pipeline

The invention relates to the technical field of drainage pipeline detection, and discloses an endoscopic detection device for a drainage pipeline, which comprises a detection assembly and a detection assembly, the detection assembly comprises a walking vehicle, the walking vehicle is provided with a detection head, and the tail part of the walking vehicle is connected with a wire; the positioning assembly is arranged on the wire and comprises a positioning piece, the positioning piece comprises a guide wheel located on the outer side of the wire, a fixing column is fixed in the guide wheel, a connecting plate is rotationally connected to the outer side of the fixing column, a connecting rod is fixed to the top of the connecting plate, and a winding wheel is arranged on the top of the connecting rod. The beneficial effects of the invention are that through the arrangement of the positioning assembly, the cable can be kept in a stable bending state and does not rub with the inner wall of the pipeline, thereby avoiding signal interruption or equipment short circuit caused by wear of an outer sheath of the cable, conductor fracture and cracking of an insulating layer, eliminating the influence of frictional resistance on the connection point of the detection head and the walking mechanism, and improving the detection precision. Detection interruption caused by disconnection of the two is avoided, and the detection process is continuous and stable.
Owner:YONGYU ENVIRONMENTAL GOVERNANCE (TAIZHOU) CO LTD

Stormwater drain inserts

The present invention provides stormwater drain inserts that may include a bib with an adjustable outer frame and an inner support ring for supporting a removable filter bag. An annular seal flap may be provided around a central opening of the bib above the inner support ring. Overflow ports may be provided in the bib between the outer frame and the inner support ring.
Owner:NEW PIG CORP

Optical fiber vibration and temperature measurement diagnosis method and system for drainage pipe leakage

The invention discloses an optical fiber vibration and temperature measurement diagnosis method and system for drainage pipe leakage, and relates to the field of temperature measurement. Determining a temperature characteristic signal based on the vibration signal and a Raman scattering effect; performing wavelet packet transformation processing on the vibration signal to obtain a plurality of equal-broadband signals; eliminating noise in the plurality of equal-broadband signals, the similarity of which to a preset noise feature library is greater than a preset similarity threshold value, by adopting a minimum mean square algorithm to obtain a denoised vibration feature signal; an LSTM-GRU hybrid neural network model is constructed; splicing the output features of the LSTM layer and the GRU layer to obtain fusion features; and matching the fusion feature with a preset fault mode classification table to obtain a fault type of the drainage pipe, adding the fault type to a preset template, and outputting a diagnosis result of the drainage pipe. According to the method, the identification capability of tiny leakage in a complex environment is improved, the false alarm rate is reduced, and the accuracy of leakage detection of the drainage pipe network is improved.
Owner:BEIJING BEIKE OUYUAN SCIENCE & TECHNOLOGY CO LTD

Integrated water tank convenient to clean

The utility model provides an integrated water tank convenient to clean, and belongs to the technical field of integrated water tanks. The integrated water tank convenient to clean comprises a seat plate, and a plurality of water tank bodies are installed on the seat plate. A water tank body is mounted on a table body, the bottom of the water tank body is communicated with a drainage pipeline, a filter cartridge is inserted into the drainage pipeline, a screw rotationally penetrates through the bottom of the filter cartridge, a connecting block is mounted at one end of the screw, and an inner scraper is mounted on the outer wall of the connecting block, so that the screw is rotated, and the inner scraper slides on the inner surface of the filter cartridge; in addition, a limiting groove is formed in the screw rod, a limiting block is installed on the inner wall of the lantern ring, the lantern ring is arranged on the screw rod in a sleeving mode, the limiting block is arranged in the limiting groove in a sliding mode, and therefore when the screw rod rotates, the lantern ring can be driven to rotate, the outer scraping plate slides on the outer surface of the filter cylinder, and the purpose of cutting the sundries inside and outside is achieved. And therefore, impurities blocked in the filter cartridge can be conveniently flushed.
Owner:ZHEJIANG KESHUO KITCHEN & BATH TECH CO LTD

Protective device for tunnel construction and using method thereof

The invention belongs to the technical field of tunnel construction, and discloses a protection device for tunnel construction and a using method of the protection device. A header tank; a drain pipe group; the supporting device is connected with the water collecting tank; a drilling assembly; and a slurry supplementing assembly. The notch set is excavated at the upper end of the to-be-excavated section of the tunnel before the step is excavated, the water collecting tank is embedded into the notch set, seepage water can flow into the water collecting tank through a plurality of water inlets and is drained through the drainage pipe set, the situation that the seepage water directly washes the step when the step is excavated can be avoided, and therefore the phenomena of water accumulation and softening are avoided; when water seepage is slowed down, drilling is conducted on the top in the notch set, then grouting is conducted, the portion, above the notch set, of the rock soil is filled with grout, the solidified grout and the rock soil are anchored into a whole, the firmness of the rock soil on the top can be reinforced, continuous water seepage of the area can be prevented, and the probability of water seepage is greatly reduced.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Coal mine energy-saving unpowered drainage device and method

The invention discloses a coal mine energy-saving unpowered drainage device and method, and relates to the technical field of coal mine energy-saving equipment, the coal mine energy-saving unpowered drainage device is installed in a large-aperture drill hole with the diameter larger than or equal to 350 mm, the coal mine energy-saving unpowered drainage device comprises a large-aperture main pipe connected with the large-aperture drill hole in a sealed mode, and an air chamber is formed between the top wall of the large-aperture main pipe and a water layer of the large-aperture drill hole; the top of the large-aperture main pipe is communicated with an air inlet valve, a pressure release valve and a drainage pipe, the air inlet valve and the pressure release valve are respectively communicated with the air chamber, and the bottom end of the drainage pipe penetrates through the large-aperture main pipe and extends to a position at least 1m below the liquid level of a water layer of the large-aperture drill hole. The drainage system can drain water without power, is more energy-saving, has no electrical equipment intervention, is more reliable in safety, stable and efficient in drainage capacity, longer in service life and simple and convenient to maintain.
Owner:ZAOZHUANG MINING (GRP) JINING DAIZHUANG COAL IND CO LTD

A gutter downspout insert for clog prevention

PCT designated stageWO2026069011A1Roof drainageDownspoutWater flow
The present invention relates to a clog-prevention device for gutter systems configured to maintain continuous water flow while effectively filtering out debris and preventing blockages. The device includes a plate, and a cylindrical portion configured to be installed over a gutter downspout opening. The plate is engineered to be customizable in size and includes a plurality of raised buttons that elevate the device. The perforated body is attached to the plate and includes an upper surface, a lower surface and side surface. The upper front surface is slightly elevated to guide water smoothly into downspout. The lower surface is configured with a series of rectangular cuts to provide structural stability. Along the side surface, a plurality of perforations allows water to enter the device while blocking larger debris. Each perforation is paired with crescent-shaped protrusions that enhance water flow dynamics, prevent debris accumulation, and reduce the likelihood of clogging.
Owner:FLOWMATE AUSTRALIA PTY LTD

Aerator for generating an aerated liquid stream

A jet regulator (1) for use in a sanitary outflow fitting. The jet regulator (1) has a housing (2), a jet accelerator device (3), and a jet aeration device (5) which is mounted downstream of the jet accelerator device (3) in a flow direction (4). The stream aerating device (5) has a chamber (6) that has at least one aeration opening (7) through which air can be suctioned into the chamber (6) from the outside. An aperture plate (8) is arranged within the chamber (6), with the aperture plate dividing the chamber (6) into an air inlet part (9) and a mixing part (10), and air is suctioned from the outside in the air inlet part (9) and is mixed with liquid in the mixing part (10).
Owner:NEOPERL GMBH

A method and device for detecting abnormality of municipal sewer network liquid level data

The present application relates to the field of sewer network monitoring, and particularly relates to a municipal sewer network liquid level data anomaly detection method and device. The present application uses multi-scale feature extraction to ensure feature extraction effect while significantly reducing computational complexity. The multi-class support vector machine is used to finely classify liquid level anomalies, thereby comprehensively and efficiently detecting anomalies. Compared with the single type detection method of the prior art, the detection range is significantly expanded, and various abnormal conditions such as sensor failure, data transmission error and pipe rupture can be effectively identified. Finally, the present application forms a complete anomaly management closed loop from data acquisition, anomaly detection, classification determination to early warning output, and the anomaly log database provides data support for subsequent pipe network health assessment and operation and maintenance decision.
Owner:CCCC FIRST HIGHWAY CONSULTANTS CO LTD

Method and System for Anchoring an Underdrain

A system for anchoring an underdrain is disclosed. The underdrain having a top surface, a bottom surface positioned opposite the top surface, a first side, and a second side positioned opposite the first side. A base grout layer is on a floor surface of a water filtration system. A reinforcement structure is within the base grout layer, with a protruding portion of the reinforcement structure extending from the base grout layer. A method includes positioning the underdrain on the base grout, with the protruding portion of the reinforcement structure positioned along at least one of the first side and the second side of the underdrain, and installing a fill grout layer onto the base grout layer, with the fill grout layer covering at least a portion of the protruding portion of the reinforcement structure.
Owner:XYLEM WATER SOLUTIONS ZELIENOPLE LLC

A sewer monitoring sensor fixing device

The utility model discloses a kind of sewer monitoring sensor fixing devices, the utility model relates to sewer monitoring technical field, including two fixed components, two the fixed component both sides are equipped with positioning assembly, the fixed component includes fixed sleeve, ultrasonic sensor is fixedly installed in the fixed sleeve, first fixed band is fixedly installed in the fixed sleeve one side, and second fixed band is fixedly installed in the fixed sleeve other side, the positioning assembly includes adjusting band and positioning band, the one end of adjusting band and positioning band is equipped with second lock sleeve, third lock sleeve is fixedly installed in the other end of positioning band, adjusting band passes through third lock sleeve, and the surface of adjusting band is equipped with positioning scale;The utility model, can be adjusted according to the diameter of sewer, and can conveniently position and fix the position of two ultrasonic sensors, it is convenient to monitor sewer, with higher practical value.
Owner:SHANDONG KEWEI INFORMATION TECHNOLOGY CO LTD

A precise positioning method for sewer leakage based on concentration gradient color development principle

The application provides a precise positioning method for sewer pipeline leakage based on a concentration gradient color development principle, and comprises the following steps: S1, fixing a color development tape connected with a deployer in a manhole upstream of a pipeline, allowing the deployer to advance spirally along a central axis direction of the pipeline, and continuously releasing the color development tape in the process, so that the color development tape is radially and tightly pressed and fixedly attached to an inner wall detection area of the pipeline, and is arranged along a spiral track in the central axis direction of the pipeline until the deployer reaches a manhole downstream of the pipeline; S2, continuously injecting a tracer upstream of the pipeline; S3, activating a color development reaction of the color development tape under a sewage environment, so as to form a color development intensity gradient corresponding to a pipeline leakage point in a length direction of the color development tape, and the color development intensity gradient is positively correlated with a pipeline leakage flow; and S4, continuously scanning the color development tape by using a colorimetric analyzer method to obtain color development intensity, and determining the pipeline leakage point and leakage intensity according to the color development intensity and color development tape position information.
Owner:ACAD OF ENVIRONMENTAL PLANNING & DESIGN GRP CO LTD NANJING UNIV +1

Multi-element stacked villa drainage pipeline

The utility model belongs to the field of drainage pipelines of residential buildings, and particularly relates to a multi-element stacked villa drainage pipeline which is arranged in a building which comprises a first living unit, a second living unit, a third living unit and a fourth living unit. The first living unit, the second living unit, the third living unit and the fourth living unit are each internally provided with a pollution discharge area, and the drainage pipeline comprises a main pipeline, a first drainage stand pipe, a second drainage stand pipe, a third drainage stand pipe and a fourth drainage stand pipe, and the first drainage stand pipe, the second drainage stand pipe, the third drainage stand pipe and the fourth drainage stand pipe are communicated with the main pipeline. The first living unit is communicated with a first drainage vertical pipe, the second living unit is communicated with a second drainage vertical pipe, the third living unit is communicated with a third drainage vertical pipe, the fourth living unit is communicated with a fourth drainage vertical pipe, and independent drainage vertical pipes are provided for all the living units. And each living unit independently drains water to the main pipeline without mutual influence, so that the independence of drainage of the stacked villa is improved.
Owner:HEBEI ORIENTAL PLANNING ARCHITECTURAL DESIGN CO LTD

Flush toilet

A siphon jet flush toilet comprises: a bowl; a rim spout port suppling flush water to the bowl; a discharge trap conduit; a jet spout port spouting flush water toward an inlet of the discharge trap conduit; a reservoir tank including a jet spouting discharge valve and storing flush water; a jet water conduit configured to guide the flush water in the reservoir tank to the jet spout port; and a controller being configured to control a rim spouting in which the flush water is spouted from the rim spout port and a jet spouting in which the flush water is spouted from the jet spout port, wherein the jet spouting discharge valve includes a valve body, the valve body being arranged at a position that is lower than an upper surface of the bowl and higher than a seal water level, and before opening the jet spouting discharge valve, the flush water is supplied to the jet water conduit.
Owner:TOTO LTD

Self-priming pump with ultrahigh suction height

The invention relates to the technical field of self-priming pumps, and discloses a self-priming pump with an ultrahigh suction height, which comprises a self-priming pump body, the self-priming pump body comprises a water inlet pipe and a water outlet pipe, a self-priming chamber is formed on the inner side of the self-priming pump body, after the self-priming pump body enters an extraction working state, an operator can slowly rotate a rocking wheel, and the self-priming pump body is driven to rotate by the rocking wheel; the moving part is gradually reset to the initial arrangement position; and then, the effective accommodating space in the self-suction chamber is restored, and more media can be continuously filled into the self-suction chamber, so that the negative pressure vacancy formed by the previous displacement of the moving part is filled. By dynamically adjusting the volume of the cavity of the self-suction chamber and under the synergistic effect of the impeller piece, the space of the fixed cavity of the self-suction chamber can be flexibly switched between the two working conditions of'residual liquid filling 'and'formal extraction', the inherent defects of a traditional fixed-volume self-suction chamber are effectively overcome, and the problem that a large-volume self-suction chamber is low in efficiency in the residual liquid filling stage is effectively solved; and the operation stability of the small-volume self-suction chamber in the official extraction stage is insufficient.
Owner:ANHUI ZHONGWEI PUMP TECH CO LTD

Sampled object storage device

The invention provides a sampling object storage device, and relates to the field of storage devices, the sampling object storage device comprises a main storage tank body, the upper part of the main storage tank body is rotatably provided with an upper cover body, the inner side of the main storage tank body is provided with a middle stirring blade, the inner side of the main storage tank body is provided with an inner anticorrosion release box, the main storage tank body is internally provided with a floating piece, and the lower part of the main storage tank body is fixedly provided with a drainage hard pipe; an upper water wheel is fixed to the outer side of the upper portion of the upper screw pipe, connecting tooth blocks are arranged in the middle of the upper screw pipe in an annular array mode, the lower portion of the upper screw pipe is rotationally connected with a lower connecting column, the lower connecting column is fixedly connected with the bottom of the main storage tank body, and middle connecting bevel teeth are rotationally arranged on the upper portion of the lower connecting column. Liquid in the middle of the main storage tank body is drained outwards by the hard flow pipe to extract a test sample, so that the sampling is more uniform, and the problem of inaccurate detection result deviation caused by non-uniform urine from the upper layer of the sample storage container is solved.
Owner:JIAOZUO PEOPLES HOSPITAL +1

Handheld drain cleaner

A handheld drain cleaner which feeds out and retracts a flexible cable for use in cleaning a drain includes a housing, a rotatable drum and a feed clutch assembly coupled thereto, and a driving assembly provided on the drum and within the housing. The housing has a cavity, a rear opening and a front opening. First and second axes parallel, but offset axes, are defined through the centers of the openings. The drum is rotatable about the first axis. The driving assembly is engageable with the flexible cable upon movement of the feed clutch assembly to feed the cable out of, or into, the drum, along a feed path upon engagement of the feed clutch assembly with the driving assembly and rotation of the drum.
Owner:EMERSON PROFESSIONAL TOOLS LLC

Head cooling unit

The neck cooling device 1 of this product is composed of two overlapping sheets 2 and 3. In the reference front view showing the welded portion, the yellow portion is the welded portion 4, and as shown in the reference cross-sectional view, the portion other than the welded portion 4 is a hollow portion 5. As shown in the reference front view showing the connected tubes, one end of the water supply tube 7 is connected to one tube connection portion 6, and one end of the water discharge tube 9 is connected to the other tube connection portion 8. The neck cooling device 1 is inserted through the insertion opening 11 shown in the reference front view showing the neck cover, and the neck cooling device 1 is attached to the neck cover 10 as shown in the reference front view showing the attached state to the neck cover. An elastically deformable curved shape-retaining plate is inserted through the insertion opening 11. Furthermore, the other ends of the water supply tube 7 and the water discharge tube 9 are each connected to a water cooling portion. The neck cover 10 is attached to the neck as shown in the reference oblique view showing the usage state. The neck cover 10 can be stably attached to the neck by the elastic force of the curved shape-retaining plate. Then, the water cooled in the water cooling section is sent by a pump from the water supply tube 7 to the cavity 5, and the water that passes through the cavity 5 is discharged from the water discharge tube 9, sent to the water cooling section where it is cooled again, and then sent to the cavity 5 via the water supply tube 7. In this way, the cooled water circulates inside the neck cooling device 1, cooling the neck.
Owner:YAMASHIN SEIKYO

A plumbing positioning and installation robot

The present application relates to the technical field of pipeline installation auxiliary tooling, and particularly relates to a water supply and drainage pipeline positioning and installation robot, which comprises a chassis, four corners of the chassis are provided with universal wheels for movement, and the upper surface of the chassis is provided with a supporting block for centrally placing a water supply and drainage pipeline; a lifting mechanism is arranged on the chassis; a clamping and releasing mechanism is connected with the action end of the lifting mechanism, is used for clamping and fixing and actively releasing the water supply and drainage pipeline to be installed, and cooperates with the lifting mechanism to perform differential time sequence movement. The present application utilizes the cooperation of a transmission member a and a one-way clutch, when the lifting mechanism is lowered, can automatically drive the clamping part to synchronously move outward to release the pipeline, avoids the problems of jamming and bumping caused by manual intervention or single action, greatly improves the stability and precision of pipeline installation, and thus realizes the cooperative operation mode of "clamping first and then lifting" and "lowering and releasing simultaneously".
Owner:SHENZHEN SHENSHUI LONGHUA WATER CO LTD +1

Draining and filtering device for hot stuffy slag

The utility model relates to the technical field of steel slag treatment, in particular to a hot stuffy slag drainage filtering device which comprises a supporting framework and is used for being detachably connected to a water drainage opening, close to a water drainage pipeline, of a pot body, and a plurality of through holes are formed in the side wall of the supporting framework; the inner filter screen is laid on the inner side of the supporting framework; the outer filter screen is laid on the outer side of the supporting framework; and the quick mounting mechanism comprises an inner clamping assembly which is arranged between the supporting framework and the inner filter screen and is used for fixing the inner filter screen, an outer clamping piece which is arranged between the supporting framework and the outer filter screen and is used for fixing the outer filter screen, and a fixing assembly which is arranged between the supporting framework and the pot body and is used for fixing the supporting framework. The device has the advantages that after steel slag is sealed, slag scale is not prone to adhering to a water drainage opening of the water drainage pipeline, and accumulated water in the tank body can be conveniently drained.
Owner:HEBEI ANTAI ENG TECH CO LTD

Safety box for high-pressure cylinders

PCT designated stageWO2025231539A1Large containersGas cylinderControl manner
The present invention relates to a piece of equipment for handling high-pressure cylinders containing a wide variety of gases, which products are highly hazardous, with the main aim of protecting the physical integrity of the workers involved in the operation. The safety box for high-pressure cylinders is preferably mounted inside a 20-foot container (CO) and comprises a hermetically sealed metal retention box (1), inside which there is provided a base (2) for fastening the cylinder (C) by means of a quick fastener (3), wherein one of the walls is provided with a hole (4) through which the end of a remotely operated pneumatic drill (5) is inserted, and another wall is provided with a drain (6) which is opened in a controlled manner and is connected to a product degradation system, wherein cameras (7) are further positioned at certain points to monitor all stages of the cylinder (C) pre-disposal operation, and wherein the entire assembly is controlled by a programmable logic controller (PLC) and the operations are performed remotely.
Owner:AMBIPAR RESPONSE SA

A sewer structural defect detection system, method, medium, and product

The application relates to the technical field of sewer pipeline detection, and discloses a sewer pipeline structural defect detection system, method, medium and product. The controller actively constructs and generates coded infrasound wave signals, so that the signals have stable frequency and amplitude characteristics. An infrasound sounding module uses the coded infrasound wave signals to emit and process infrasound waves, and makes low-frequency mechanical vibration signals stably propagate along the pipe wall, reduces energy attenuation, and covers long-distance pipe sections that cannot be reached by traditional passive detection. The low-frequency mechanical vibration signals are detected by an infrasound signal receiving module, and analog signals are converted into initial digital signals, so that interference and distortion in the transmission process are reduced. Further, by combining a Fourier transform method and a correlation coefficient analysis method, the problem of high misjudgment rate of a traditional single algorithm is avoided, the accurate identification of pipeline structural defects is ensured, and the accuracy requirement of sewer pipeline structural defect detection under complex working conditions is met.
Owner:THREE GORGES GROUP IND DEVELOPMENT (BEIJING) CO LTD +1

Improved silencer for electromagnetic valve

The utility model discloses an improved silencer for an electromagnetic valve, and particularly relates to the technical field of silencers, which comprises a shell, an air inlet part is mounted at the top of one end of the shell, a partition plate is arranged in the shell, a first silencing cavity is formed on one side of the partition plate, and a second silencing cavity is arranged on the other side of the partition plate. A first exhaust port is formed in the partition plate, a second exhaust port is formed in the top end of one side of the second silencing cavity and provided with a metal net, a drainage groove is formed in the bottom end of the second silencing cavity and connected with a drainage pipe, and the air inlet part comprises an air inlet pipe, an exhaust head and a fixing nut. The bottom end of the air inlet pipe is connected with an exhaust head, and the air inlet pipe is installed on the shell through a fixing nut. By means of the room type silencing principle and the special structural design, the airflow speed is reduced in three times, noise is effectively reduced, the arc-shaped plate can guide airflow and drain water, the metal net can prevent pollutants from entering, and the performance of the silencer is guaranteed.
Owner:SHANXI YUNZHONG FENGHUI TECH CO LTD

Electrical control panel cabinet drain

ActiveCN224481352UEasy to release and dischargeprevent backflowElectrical controlEnvironmental engineering
The utility model discloses electrical control panel cabinet drainage technical field's a kind of electrical control panel cabinet drainage device, comprising: panel cabinet body, the panel cabinet body lower end is provided with drain hole, the bottom of panel cabinet body is provided with anti-inversion mechanism and guiding mechanism, the anti-inversion mechanism includes drain groove, the drain groove is assembled in panel cabinet body bottom end, drain port is opened in the inside of drain groove, the bottom fixedly connected with drain guide pipe at drain port, the drain guide pipe bottom end is assembled with external drain pipe, the inner wall of drain guide pipe is fixedly connected with fixed disc, the inside of fixed disc is opened with through slot, the lower end of fixed disc is provided with baffle. Realize that the electrical control panel cabinet drainage device can be prevented from inverting and protect, avoid the phenomenon that rainwater inverts and enters the inside of electrical control panel cabinet in the case of larger external rainwater, baffle plugs through slot, external rainwater inverts cannot pass through through slot, ensure the safety of device, improve the practicality and security of device.
Owner:JIANGSU FENGDING NEW MATERIAL CO LTD