28 results about "Penstock" patented technology

The application discloses a hydroelectric station ecological flow discharge system and a discharge method, which are applied to a pressure steel pipe diversion type hydroelectric station. The system comprises a bypass pipe, an inlet end of the bypass pipe is connected with a pressure steel pipe, and the bypass pipe is used for guiding water flow in the pressure steel pipe; a measuring weir, the measuring weir is connected with an outlet end of the bypass pipe, and the measuring weir is used for ecological flow discharge; a monitoring module, the monitoring module is arranged on the measuring weir, and the monitoring module is used for monitoring water level data of the measuring weir; and a control valve, the control valve is arranged on the bypass pipe, and the control valve is used for adjusting water flow flow of the bypass pipe according to an analysis result of the water level data, so as to control flow discharge of the measuring weir. The embodiment of the application can realize ecological flow discharge of the pressure steel pipe diversion type hydroelectric station, and improve stability and ecological benefits of the ecological flow discharge. The application can be widely applied to the technical field of water conservancy and hydropower.

The invention relates to the field of water conservancy and hydropower pressure steel pipe manufacturing, mounting and construction, in particular to a pressure steel pipe transportation steering method. Steering transportation of the pressure steel pipes is achieved through the specific pressure steel pipe steering transportation trolley, a lifting point does not need to be arranged at the top of a tunnel for suspended steering, and the construction environment is friendly; by the adoption of the pressure steel pipe steering transportation trolley, the same device can be adopted for in-hole transportation and steering operation before steering and after steering, multiple transportation devices are not needed, the construction procedure and construction cost of an engineering project are optimized, and the safety in the construction process is also improved. In addition, the trolley can be repeatedly used, and is good in economic benefit and good in generalization performance.

The invention discloses an integral structure, a design method and a construction method of a fixed pressure steel pipe. The overall structure comprises the reinforced concrete piles, the peripheral reinforced concrete structure and the pressure steel pipes, sliding of the pressure steel pipes is prevented through shearing resistance of the reinforced concrete piles and friction force between concrete and a foundation face, overturning of the pressure steel pipes is prevented through the combined effect of the piles and rock masses around the piles or a covering layer, and the effect of stabilizing the pressure steel pipes is achieved. Compared with a traditional anchor block which is large in size and complex in formwork erecting, the anchor block is more compact and light in structure, the corresponding formwork engineering amount is small, and the construction difficulty is remarkably reduced. The cast-in-situ bored piles or the rotary digging hole-forming cast-in-situ piles are adopted in a mature construction method, the construction process is standardized, the project quality can be guaranteed, and the construction efficiency can be improved.

The utility model provides a living water supply system for an auxiliary plant of a hydropower station. The living water supply system comprises a pressure steel pipe, a living water supply main pipe, a main pipe valve and instrument group, a coarse filter, a living water supply branch pipe, a small water treatment combined device, a low-water-quality-requirement water sanitary appliance, a high-water-quality-requirement water sanitary appliance and a pressure increasing and reducing unit. Wherein the living water supply branch pipes comprise a first living water supply branch pipe and a second living water supply branch pipe. According to the living water supply system for the auxiliary plant of the hydropower station, the existing water source water pressure resource of the hydropower station can be well utilized, and the living water supply system which is simple, high in flexibility, convenient to operate, maintain and manage, low in investment cost and suitable for the auxiliary plant of the hydropower station can be designed, so that the actual use requirement in engineering is met.

The invention discloses a corrugated expansion joint structure for a pressure steel pipe with a large HD value. Comprising pressure steel pipes located at the front end and the rear end of the corrugated expansion joint structure respectively, an expansion joint front connecting section welded and sealed to the rear portion of the pressure steel pipe at the front end, an expansion joint rear connecting section welded and sealed to the front portion of the pressure steel pipe at the rear end, and an inner flow guide sleeve welded and sealed to the expansion joint front connecting section. The inner flow guide sleeve and the outer flow guide sleeve are in lap joint oppositely, an axial telescopic gap is reserved between the inner flow guide sleeve and the outer flow guide sleeve, and a water stop corrugated pipe is arranged on the outer sides of the inner flow guide sleeve and the outer flow guide sleeve and between the telescopic joint front connecting section and the telescopic joint rear connecting section and used for connecting the inner flow guide sleeve and the outer flow guide sleeve in a sealed mode. The outer side of the water stop corrugated pipe is sleeved with a fence plate assembly capable of stretching and retracting in the axial direction, and the inner side of the water stop corrugated pipe is provided with an outwards-protruding wave reinforcing ring for supporting wave crests of the water stop corrugated pipe. And the use limitation that the thickness of the corrugated pipe plate must be increased along with the increase of the HD value is solved.

This utility model discloses a variable-diameter transport device for pressure steel pipes in water conservancy engineering tunnels, including a frame body and wheels. The frame body includes a roof plate, a floor plate, and multiple side plates surrounding it. At least two parallel, through-type grooves are provided on the surface of the roof plate. Two brackets are slidably mounted on each groove via a displacement adjustment mechanism. The two brackets are symmetrically arranged and move synchronously towards or in opposite directions under the action of the displacement adjustment mechanism. This utility model allows for rapid adjustment of the distance between the two brackets through the displacement adjustment mechanism, enabling it to support pressure steel pipes of various diameters, effectively improving tunnel construction efficiency, reducing construction costs, and ensuring construction quality and safety.

1. The name of the design product: pressure steel pipe tile. 2. The use of the design product: used for laying high-pressure gas storage steel lining or water conservancy and hydropower pressure steel pipe structure. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The invention discloses an unpowered emergency drainage system for a high-water-head hydropower station, belongs to the technical field of drainage systems, and aims to solve the problem that accumulated water in a water collecting well cannot be timely and effectively emptied when the hydropower station encounters a power failure accident of the whole plant. The unpowered emergency drainage system comprises a pressure steel pipe, a control part is arranged at one end of the pressure steel pipe, and a first pipeline is fixedly mounted at one end of the control part; a fixing frame is fixedly mounted at one end of the first pipeline, a suction shell is fixedly mounted at one end of the fixing frame, a spray pipe is slidably connected into the first pipeline, one end of the spray pipe is slidably connected with the suction shell, a sealing seat is fixedly mounted on the surface of the spray pipe, and a baffle is slidably connected to one side of the sealing seat. Compared with a traditional drainage pump system depending on electric power, the drainage pump system can continuously pump accumulated water of the water collecting well under the extreme power-off working condition, the accumulated water is prevented from flowing back to a plant due to drainage interruption, and the safety of power generation equipment and an electrical system is protected.

The high-grade steel comprises the following chemical components in percentage by weight: 0.039 to 0.059 percent of C, 1.20 to 1.60 percent of Mn, less than or equal to 0.15 percent of Si, less than or equal to 0.015 percent of P, less than or equal to 0.003 percent of S, 0.040 to 0.060 percent of Nb, 0.030 to 0.060 percent of V, 0.010 to 0.020 percent of Ti, 0.001 to 0.003 percent of B, 0.010 to 0.060 percent of Alt, 1.20 to 2.00 percent of Ni, 0.30 to 0.60 percent of Cr, 0.40 to 0.70 percent of Mo, less than or equal to 0.55 percent of Ceq, less than or equal to 0.22 percent of Pcm and the balance of Fe and impurities. The ultra-low carbon C is smaller than 0.06%, the ultra-low welding crack sensitivity coefficient Pcm is smaller than or equal to 0.22%, Nb + V + Ti microalloying and Ni + Cr + Mo alloying design are adopted, Ti + B elements are adopted for improving the hardenability of the steel plate, the technologies of rolling under large pressure, low-temperature controlled rolling, ultra-fast cooling of the rolled steel plate and the like are adopted in the controlled rolling and controlled cooling process, and the properties that the yield strength is larger than or equal to 890 MPa, the tensile strength is 950-1100 MPa, and the transverse low-temperature impact energy of the steel plate at the temperature of 60 DEG C below zero is larger than or equal to 150 J are achieved.

The application discloses a pressure steel pipe state diagnosis method and system based on microwave vibration measurement, and the method comprises the following steps: emitting a linear frequency modulation continuous wave signal to a pressure steel pipe surface measuring point and receiving a return wave, obtaining a vibration displacement time sequence signal through orthogonal down-conversion and digital solution; after standardization, multi-dimensional candidate feature parameters are extracted from time domain, frequency domain and time-frequency domain; a key feature parameter set is obtained through an aggregated analytic hierarchy process and a redundancy elimination strategy; the key feature parameter set is mapped to a state level according to a preset correlation mapping rule, and is used for early warning, scheduling and maintenance. The system comprises a vibration displacement signal acquisition module, a key feature parameter extraction module and a stability state evaluation module. The application realizes non-contact high-precision vibration displacement measurement, is stable and reliable under different working conditions, has strong physical interpretability of diagnosis results, can early identify progressive deterioration signs, and improves state judgment accuracy.

The application provides a long-pressure penstock emptying system without a gate valve at the end of the penstock and a working method thereof, which comprises a water inlet, a long-pressure penstock, a pressure pipeline and a plant in sequence, a pressure regulating chamber is arranged at the joint of the long-pressure penstock and the pressure pipeline, a construction adit is arranged at the end of the long-pressure penstock, the construction adit is arranged on the upstream side of the pressure regulating chamber, a maintenance gate is arranged at the end of the long-pressure penstock close to the construction adit, a water collecting pit is arranged at the bottom of the long-pressure penstock close to the construction adit, a drain pipe is communicated with the bottom of the water collecting pit, one end of the drain pipe is connected to the outside through the construction adit, a working valve is arranged at the water outlet end of the drain pipe, the water collecting pit is arranged to actively collect seepage water, the construction adit is used as a seepage water leading channel of the long-pressure penstock, and the seepage water in the long-pressure penstock can be effectively drained; the temporary water blocking sandbags can be quickly arranged and removed, and the seepage water can be effectively prevented from flowing into the pressure pipeline downstream.

The utility model relates to the related technical field of steel pipe coating repairing equipment, and discloses hydropower station pressure steel pipe anti-corrosion coating rapid repairing equipment which comprises a base, pressure steel pipe main supporting rollers are linearly fixed to the rear portion of the top of the base, and connecting shafts are installed between the pressure steel pipe main supporting rollers. A first motor is arranged on the right wall of the pressure steel pipe main supporting roller on the right side, the output end of the first motor is connected with a roller body of the pressure steel pipe main supporting roller, a sliding groove is formed in the position, located in front of the pressure steel pipe main supporting roller, in the base, a threaded rod is rotationally installed in the sliding groove, and a sliding block is inserted into the sliding groove. And the sliding blocks are in threaded connection with the threaded rods, and pressure steel pipe auxiliary supporting rollers are fixed to the tops of the sliding blocks, so that a pressure steel pipe anti-corrosion coating can be better and rapidly repaired, manpower is saved, the working efficiency is improved, and the pressure steel pipe anti-corrosion repairing device is suitable for being used for pressure steel pipes of various diameters.

The application relates to a water diversion tunnel repairing device and a repairing method, which comprises a repairing device body and an external control assembly, the external control assembly controls the repairing device body, the repairing device body comprises an inspection assembly, an isolation assembly, a repairing assembly, a moving assembly and a power supply assembly, the inspection assembly, the isolation assembly and the repairing assembly are arranged in the moving assembly and are fixedly connected with the moving assembly, the moving assembly drives the inspection assembly, the repairing assembly, the isolation assembly and the power supply assembly to move along the length direction of the water diversion tunnel; the inspection assembly is used for inspecting the wall condition of the water diversion tunnel; the power supply assembly provides power supply for the inspection assembly, the isolation assembly, the repairing assembly and the moving assembly to operate the repairing device body; the repairing assembly penetrates through the isolation assembly, the isolation assembly performs water-free isolation on the water diversion tunnel, and the repairing assembly is convenient for repairing the damaged part of the wall; the device can automatically inspect and repair in the water diversion tunnel, and the operation risk of the repairing personnel is reduced; the repairing method is simple, convenient and easy to operate.

The present application relates to the technical field of metrology, and particularly relates to a safety evaluation method and device for a water diversion pressure steel pipe of a hydroelectric generating set, wherein the method comprises: obtaining structural parameters of a target water diversion pressure steel pipe of the hydroelectric generating set, and constructing a three-dimensional image model of the target water diversion pressure steel pipe based on the structural parameters; based on the structural parameters and a preset monitoring point setting condition, marking a plurality of monitoring points in the three-dimensional image model to obtain current wall thickness data of the plurality of monitoring points, and calculating a wall thickness abrasion rate of the target water diversion pressure steel pipe; and combining operation data, material data, the current wall thickness data and the wall thickness abrasion rate of the target water diversion pressure steel pipe to obtain a safety evaluation result of the target water diversion pressure steel pipe. Thus, the problem of high-altitude operation safety hazards caused by the fact that related technologies rely on manual operation and long-term and continuous monitoring is difficult to achieve, thereby causing excessive consumption of manpower and resources and a large error in the evaluation of the remaining life of the steel pipe is solved.

The embodiment of the application provides a kind of water turbine runner blade crack detection method, equipment and medium, method includes: by unmanned underwater vehicle obtains underwater real-time detection information;According to underwater real-time detection information, unmanned underwater vehicle is navigated to the target area where water turbine runner blade is located;By unmanned underwater vehicle, obtain the blade image information of target area;According to blade image information, obtain the crack information of water turbine runner blade.By unmanned underwater vehicle, underwater real-time detection information is automatically obtained, and according to underwater real-time detection information, unmanned underwater vehicle is navigated to the crack detection of water turbine runner blade, and the crack detection efficiency of water turbine runner blade is high;And without setting up tail water maintenance platform, emptying pressure steel pipe and tail water pipe, by unmanned underwater vehicle, it can be driven to the crack detection of water turbine runner blade from tail water pipe, and the detection cost is low.

The application discloses a kind of active regulation and control method and terminal suitable for water conservancy project pressure steel pipe thickness, it is related to water conservancy engineering design technical field, including the following steps: according to existing database to establish depth neural network model;Pressure steel pipe engineering calculation parameter is input into depth neural network model, to carry out intelligent optimization and prediction to the thickness of pressure steel pipe and its deformation, stress under different geological conditions;According to set requirement, whether the optimized pipe thickness and its corresponding deformation and stress prediction value meet the condition are autonomously discriminated, and the prediction database of pipe thickness and its corresponding deformation and stress that meet the condition is constructed;In prediction database, the pipe thickness is autonomously compared, and the optimal pipe thickness and its corresponding deformation and stress prediction value are output.The scheme is adopted, can be based on existing pressure steel pipe thickness design method, fusion intelligent optimization algorithm, realize the active regulation and control of pressure steel pipe thickness design, thereby reduce its engineering calculation amount, improve steel utilization rate.

The application provides a dam-break-preventing water flow regulating system for a barrier lake, which comprises an M river and a T river, a dam is arranged at the downstream of the M river, a water regulating open channel is arranged between the M river and the T river, the water regulating open channel is arranged at an altitude between the M river and the T river, a reinforced concrete water regulating tunnel and a pressure steel pipe are further arranged, the two ends of the reinforced concrete water regulating tunnel are respectively connected with the M river and the water regulating open channel, the two ends of the pressure steel pipe are respectively connected with the water regulating open channel and the T river, and a water inlet working gate system and a water outlet working gate system are further arranged at the two ends of the reinforced concrete water regulating tunnel, so that the problem that the barrier lake formed by the earthquake has no drainage outlet and the barrier dam collapses is solved.

The invention provides a hydropower station pressure steel pipe corrosion detection system and method, and the system comprises a data collection module which is used for obtaining multi-source heterogeneous detection data of the surface of a pressure steel pipe; the data fusion module is used for performing space-time registration and feature level fusion on the multi-source heterogeneous detection data to generate a fused steel pipe state data set; the corrosion analysis module is used for identifying a corrosion type and calculating characteristic parameters including a corrosion area, a corrosion depth and a corrosion rate based on the steel pipe state data set; the safety evaluation module is used for inputting the characteristic parameters into a structural reliability model trained by corrosion data and outputting a grading evaluation result of the current safety state of the pressure steel pipe; and the decision support module is used for generating a decision report including maintenance priority ranking and predictive maintenance suggestions based on comparison between the grading evaluation result and historical data, so that the corrosion detection efficiency of the pressure steel pipe of the hydropower station and the accuracy of safety state evaluation are improved.

The invention relates to the technical field of hydropower station pressure steel pipe installation, in particular to a hydropower station large pressure steel pipe in-hole circle forming and transportation construction process which comprises the following steps that tiles are transported to a circle forming station at the intersection of a construction branch hole and a main hole; the tiles are subjected to circle assembling and welding at the circle assembling station to form a whole section of pressure steel pipe; a rolling device is arranged on a stiffening ring of the pressure steel pipe; the pressure steel pipe provided with the rolling device is hoisted to a rail car; the rail car is dragged to advance to an intersection of the to-be-installed main hole and the construction adit along the adit rail; the pressure steel pipe is transferred from the rail car to a main hole rail laid in a to-be-installed main hole, the wheel track of the rolling device is matched with the track gauge of the main hole rail, and the center elevation of the transferred pressure steel pipe is the designed installation elevation; and the pressure steel pipe is pulled to a mounting station along the main hole track. Therefore, the problem that the transportation time efficiency is difficult to guarantee in the limited space is solved, and the construction quality and the construction safety are guaranteed.

The application provides a vertical shaft pressure steel pipe outer concrete pouring device and a pouring method. The device comprises a concrete hanging tank, the bottom of the concrete hanging tank is connected with the inner ring of a rotary table bearing through a connecting frame, the rotary table bearing is arranged around the discharging port of the concrete hanging tank, the top of a distribution bin is connected with the bottom of the outer ring gear of the rotary table bearing, a driving motor is arranged on the connecting frame, the output end of the driving motor is provided with a driving gear which is engaged with the outer ring gear of the rotary table bearing, and at least two groups of inlet chute pipes are arranged on the side wall of the distribution bin, and the discharging ports of the inlet chute pipes are arranged between the pressure steel pipe and the shaft wall. The device and the method can improve the uniformity and the pouring speed.

The application relates to a pressure steel pipe circumferential weld anticorrosion brushing mechanism. The application is suitable for the technical field of water conservancy and hydropower engineering. The application aims to provide a pressure steel pipe circumferential weld anticorrosion brushing mechanism. The application adopts the technical scheme that the pressure steel pipe circumferential weld anticorrosion brushing mechanism comprises the following parts: a wheel disc which has two concentric coaxial arrangements and whose inner diameter is larger than the outer diameter of the pressure steel pipe; a radial adjusting mechanism which has at least three and is arranged between the two wheel discs and is uniformly distributed along the wheel disc; a roller which is arranged in one-to-one correspondence with the radial adjusting mechanism and is installed on the corresponding radial adjusting mechanism, the position of the roller in the radial direction of the wheel disc can be adjusted through the radial adjusting mechanism, and the roller axis is parallel to the wheel disc axis; and a driving mechanism which is used for driving the wheel disc to rotate around the pressure steel pipe.

The utility model discloses a pressure steel pipe transportation anti-corrosion operation trolley which comprises a movable base, an inner construction platform and an outer construction platform, the inner construction platform and the outer construction platform are arranged on the movable base, a vertical interval for pressure steel pipes to be vertically inserted is formed between the inner construction platform and the outer construction platform, and a bearing table is arranged at the bottom of the vertical interval of the movable base. A passing opening is formed in the middle of the inner construction platform, and a channel communicating with the passing opening is formed in the lower portion of the movable base. The pressure steel pipe transportation anti-corrosion operation trolley saves time and labor, reduces construction troubles, reduces construction cost and improves construction operation efficiency.

The application provides a machine vision monitoring device and method for a water diversion pipeline cross section, and belongs to the technical field of safety monitoring of water conservancy projects. The application comprises a water diversion pipeline excavation trench, a machine vision measuring instrument and a power supply system. The water diversion pipeline excavation trench is a trench structure formed by open excavation construction of a first water diversion pipeline, and the first water diversion pipeline is laid in the water diversion pipeline excavation trench. A second water diversion pipeline crosses over the water diversion pipeline excavation trench, and forms an overhanging section above the water diversion pipeline excavation trench. A concrete support frame is arranged below the overhanging section of the second water diversion pipeline. A plurality of measuring targets are fixed to the second water diversion pipeline, and each of the plurality of measuring targets is provided with a deformation measuring point. The machine vision measuring instrument is arranged on one side of the water diversion pipeline trench and is used for collecting target position images of the measuring targets and the first water diversion pipeline. The application solves the problems of low measurement accuracy and complicated manual operation in the prior art when manual deformation measurement is used.

The utility model discloses a large-diameter concrete water pipe which comprises a UHPC inner pipe, a UHPC socket end at one end and a UHPC spigot end at the other end, and further comprises a common reinforced concrete outer pipe on the outer circumferential face of the UHPC inner pipe and between the UHPC socket end and the UHPC spigot end. A sealing ring for sealing the inner circumferential surface of the circular insertion hole of the UHPC socket end is arranged on the outer circumference of the circular insertion pipe of the UHPC socket end; the end face of the large-diameter part of the UHPC spigot end and the end face of the large-diameter part of the UHPC socket end are each provided with an annular groove used for containing a sealing ring. The outer end face of the circular insertion pipe at the UHPC spigot end and the inner end face of the circular insertion hole at the UHPC socket end are each provided with an annular groove used for containing a sealing ring. The water pipe has the characteristics of high-strength compactness, high wear resistance, high impermeability, super corrosion resistance and durability of the ultra-high performance concrete, and is relatively simple in structure, short in production period, high in production efficiency and field installation and construction efficiency and relatively low in cost.

The invention relates to a pressure steel pipe assembling device and method.The pressure steel pipe assembling device comprises a base, a first rack and a second rack, the first rack is used for bearing a first tile, the first rack is movably connected with the base, and the first rack can turn over relative to the base; the second rack is used for bearing a second tile, and the second rack is movably arranged on the base and can move in the direction close to the first rack so that the first tile and the second tile can be in butt joint to form the pressure steel pipe. The second tile and the first tile can be in butt joint to form the pressure steel pipe by moving the second rack, then the pressure steel pipe can be taken down after the first rack is turned over, and butt joint and fixation of the first tile and the second tile are achieved only manually in the whole process. And the processes of butt joint of the tiles, overturning of the pressure steel pipe, taking and placing and the like are completely automatically operated, safety risks caused by manual butt joint and hoisting overturning are eliminated, and the automation degree, the butt joint precision and the assembly efficiency are improved.

The utility model relates to the technical field of water conservancy and hydropower engineering construction, in particular to an auxiliary device for installing and positioning a pressure steel pipe of a hydropower station. Comprising a base, a rotary moving mechanism, a clamping mechanism and a ground nail, the rotary moving mechanism is arranged on the base, the clamping mechanism is arranged at the top of the rotary moving mechanism, the ground nail is arranged at the bottom of the base, a third groove is formed in the base, and a through hole is formed in the top of the third groove; a sliding groove is formed in the top of the rotating column, hydraulic cylinders are arranged at the two ends, away from each other, in the sliding groove, the output ends of the hydraulic cylinders are connected with a sliding rod, and a clamping mechanism is arranged at the top of the sliding rod. By rotating the rotating column, the angle of the clamping mechanism is adjusted for a pipeline with an inclination angle, and according to pipelines with different pipe diameters, the hydraulic cylinder is started to push the sliding rod, so that the clamping mechanism clamps the pipeline, and the positioning auxiliary work is completed.

The application belongs to the technical field of installation of pressure steel pipe of hydropower station, and particularly discloses a pressure steel pipe fixing device and fixing method, which comprises a locking fixing support pier, a locking fixing hinge, a locking movable hinge and a limiting unit; the locking fixing hinge and the locking fixing support pier are pre-buried in concrete, and the locking movable hinge is rotationally connected with the locking fixing hinge; the locking fixing support pier is used for limiting the downstream rotation of the locking movable hinge; the limiting unit is used for limiting the angle of the upstream rotation of the locking movable hinge, and when the locking movable hinge rotates to a preset angle, the limiting unit can abut against the locking movable hinge; the locking movable hinge has two working surfaces, when the pressure steel pipe is in a locking position, the locking fixing support pier abuts against one of the working surfaces of the locking movable hinge, and the stiffening ring of the pressure steel pipe abuts against the other working surface of the locking movable hinge. The application can temporarily fix the pressure steel pipe during installation, and ensures the construction safety.