21 results about "Pipe bursting" patented technology

The invention belongs to the technical field of pipeline flow monitoring, and particularly relates to a long-distance water delivery pipeline flow monitoring method fused with terrain dynamic compensation, which comprises the following steps: selecting a long-distance water delivery pipeline reference point, and synchronously acquiring reference flow and static pressure; based on a multi-source data fusion technology, constructing a pipeline terrain elevation parameter model, generating a three-dimensional terrain matrix, calculating an elevation difference, a gradient and a curvature radius, and constructing a terrain correction matrix; on the basis of Darcy formula correction, down-slope section kinetic energy suppression and a down-slope section pressure compensation algorithm, head loss is corrected, potential energy conversion errors are suppressed, and water hammer effect interference is eliminated; the flow in the pipeline is corrected through edge calculation, and global flow balance verification is carried out; and pipe bursting or leakage points are positioned in an auxiliary manner based on an integrated visual platform. According to the method, the measurement precision of the pipeline flow under the complex terrain is effectively improved, and a high-precision and all-terrain self-adaptive intelligent monitoring and early warning platform is provided for a long-distance water conveying pipeline.

The invention discloses blasting depressurization experimental equipment and method for an oil and gas conveying composite pipe. The blasting depressurization experimental equipment comprises composite pipe adapters, experimental medium injection systems, dual-mode blasting devices, discharge pipes and controllers, wherein the two ends of the composite pipe are each provided with a composite pipe adapter; the damage condition of the composite pipe under rapid pressure reduction in the pipe can be analyzed, the bursting pressure load of the pipe is converted into the bursting load of the bursting disc, rapid and instant leakage of a medium in the pipe can be simulated on the premise that the composite pipe is not damaged, the device is closer to engineering practice, and the device is simple in structural process and convenient to operate. And the collapse critical pressure of the lining layer of the composite pipe under different discharge apertures can be directly obtained.

The application discloses a method for evaluating the residual strength of a pipeline with corrosion defects under blasting vibration, and belongs to the technical field of oil and gas pipeline safety evaluation. In view of the problem that the traditional method only considers the corrosion geometric thinning and ignores the material dynamic performance degradation and spatial non-uniform distribution, leading to distorted evaluation, the application reconstructs the corrosion morphology based on detection data, constructs a corrosion damage variable, calibrates the damage-strain rate-material parameter mapping relationship through a mechanical test, establishes an explicit dynamic model of a pipeline-defect-soil-blast source, realizes non-uniform assignment of material performance in the corrosion area by using the UMAT subprogram of LS-DYNA, obtains stress, strain and damage state through nonlinear dynamic analysis, and completes the residual strength evaluation. The application couples the geometric defects and material degradation effect for the first time, greatly improves the evaluation accuracy and engineering applicability, and provides support for the safety control of pipeline blasting construction.

The invention relates to a pipeline pressure testing technology, and aims to provide a pipe-diameter-variable pipeline bursting test sealing device. The device comprises sealing structures installed at the two ends of a to-be-detected pipeline respectively, and each sealing structure comprises a nested fixing assembly and a composite sealing structure. The nested mounting assembly comprises an end cover, a reducing ring and a plug, the composite sealing structure comprises an elastic sealing ring and a deformable conical surface annular ring which are arranged on the plug in a sleeving mode. The conical surface annular ring is adaptively embedded in the wedge-shaped space, and the annular conical surface of the conical surface annular ring is attached to the conical surface transition between the two steps; the elastic sealing ring is located on the outer side of the conical surface annular ring and connected with the inner cavity space of the to-be-detected pipeline. According to the invention, frequent replacement of a loading piece of a testing machine according to the change of the size of the to-be-tested pipeline in a traditional testing scheme can be avoided; by means of the mechanical sealing joint instead of a welding structure, the sealing performance can be greatly improved, and more reliable self-tightening sealing under high pressure is achieved.

The utility model discloses a composite steel reinforced coiled plastic continuous pipe which comprises a medium transmission layer, a polyester composite layer is arranged on the outer layer of the medium transmission layer, a steel wire reinforced layer is arranged on the outer layer of the polyester composite layer, and a protective layer is arranged on the outer layer of the steel wire reinforced layer. According to the continuous pipe, the terylene isolation layer is added between the medium transmission layer and the steel reinforcement layer for composite reinforcement, a prepreg tape surface heating and circumferential compression roller device is added, the temperature resistance and strength of the medium transmission layer are improved, the interlayer welding and compact strength are improved, and the problems that the inner pipe is softened, deformed, expanded and embedded into the reinforcement layer, so that the winding angle is changed, the structure is damaged and the service life is prolonged are solved. The coiled tubing has the advantages of being high in ring stiffness, good in rigidity, capable of being coiled, resistant to corrosion, resistant to external pressure, resistant to bending, resistant to torsion, resistant to stretching, resistant to compression and the like.

The utility model discloses a device for purging oxide skin of a pipe on a heating surface of a boiler, which is arranged on an outlet section of a main steam pipeline or a reheat steam pipeline, and comprises an air exhaust purging pipeline, an air exhaust purging pipeline, an air exhaust purging pipeline, an air exhaust purging pipeline and an air exhaust purging pipeline, and the inlet section of the air exhaust purging pipeline is communicated with the outlet section of the main steam pipeline or the reheat steam pipeline; the shut-off valve is arranged on the air exhaust purging pipeline and is close to the inlet section of the air exhaust purging pipeline; the blowing dust collection silencer is arranged on the roof of the boiler room and is communicated with the outlet section of the air exhaust blowing pipeline; and the fixing device is connected with the air exhaust purging pipeline and is fixedly connected with a steel frame layer above the boiler. Impurities such as oxide skin on the high-temperature heating surface of the boiler can be blown out of the boiler, so that the impurities are prevented from entering equipment such as a low-pressure cylinder and a condenser in a downstream steam turbine, hidden dangers such as over-temperature pipe explosion possibly caused by accumulation of the oxide skin on the high-temperature heating surface are avoided, and the operation safety of the unit boiler is improved.

The invention discloses a rapid assembly type two-way extensible honeycomb type piping protection device and method, and the piping protection device is a three-dimensional honeycomb type protection device formed by connecting and assembling a plurality of regular hexagonal protection units through two-way extension in the horizontal direction and the vertical direction. Each standard protection unit is of a regular hexagon structure formed by connecting six water-stop sheets end to end in a circulating mode. During assembly, the water-stop sheets on the overlapped edges of the adjacent protection units in the horizontal direction are shared; the protection unit can freely drain water in the vertical direction, other parts of the protection unit are self-closed to form a water storage space, and the water storage space is filled with a flexible layered filtering cavity; the inner wall of the protection unit is attached to the hierarchical filtering cavity to construct a semi-rigid reverse filtering system. The seepage velocity and the water pressure gradient are effectively reduced, and dynamic plugging of a piping channel and active regulation and control of a seepage field are achieved; the modular design facilitates prefabrication, mechanical rapid layout and reutilization, and the timeliness of emergency rescue operation and the engineering safety redundancy are remarkably improved.

The present disclosure relates to a method and system for city lifeline pipeline burst prevention based on an IoT large model. The method includes: obtaining fluid pressure data; determining a pipe burst probability of a pipeline network node based on the fluid pressure data; and determining a target valve and a valve opening degree of the target valve based on the pipe burst probability, and controlling the target valve to the valve opening degree.

A compact, open path cable pulling apparatus, having a low center of gravity, composed of two detachable, single person hand-portable components, and useful in either a vertical or horizontal configuration. The apparatus is competent to pull cable horizontally through space underground with a pulling force in the range of at least about 20 to 100 tons using low pressure flow hydraulics and has utility in the cable pulling industries, including in the drilling and horizontal directional drilling industries, and as part of a method for pulling cable through space, including pulling cable through space in the pipe bursting and trenchless pipe replacement industries.

A compact, open path vertical cable pulling apparatus, having a low center of gravity and composed of two detachable, single person hand-portable components. The apparatus is competent to pull cable horizontally through space underground with a pulling force in the range of at least about 20 to 100 tons using low pressure flow hydraulics and has utility in the cable pulling industries, including in the drilling and horizontal directional drilling industries, and as part of a method for pulling cable through space, including pulling cable through space in the pipe bursting and trenchless pipe replacement industries.

A compact, open path cable pulling apparatus, having a low center of gravity, composed of two detachable, single person hand-portable components, and useful in either a vertical or horizontal configuration. The apparatus is competent to pull cable horizontally through space underground with a pulling force in the range of at least about 20 to 100 tons using low pressure flow hydraulics and has utility in the cable pulling industries, including in the drilling and horizontal directional drilling industries, and as part of a method for pulling cable through space, including pulling cable through space in the pipe bursting and trenchless pipe replacement industries.

The utility model relates to an oil pressure pipe blasting force test board which comprises a test board body structure and a blasting test assembly structure arranged in the test board body structure. The test integrated structure is characterized by comprising a mobile base, a test equipment control box arranged at the upper part of the mobile base, and a test installation part placement space structure arranged at one side of the test equipment control box, and the blasting test assembly structure comprises a component mounting table arranged in the test mounting component placement space structure and an oil pressure pipe blasting force test assembly arranged at the upper part of the component mounting table. The tested pipe fitting can be stably fixed through the oil pressure pipe bursting force testing assembly, the detection accuracy is improved, the whole device is simple in structure, the testing process is simple and rapid, and whether the oil pipe bursting strength is qualified or not can be rapidly judged. The medium pressure can be accurately controlled, and the test safety is effectively improved.

Described herein are multi-tool boring systems and methods of operating such systems for tunnel boring and / or underground pipe installation. A multi-tool boring system is specially configured for fast installation and replacement of various tools, such as a pneumatic rammer and a hydraulic drive, enabling different operating modes of the system, e.g., pilot tube installation, auger boring, pipe ramming, pilot pullback boring, static pipe bursting, and non-contact boring. In some examples, a multi-tool boring system comprises a track assembly, a jacking frame slidably supported on the track assembly, and an impact plate assembly, which is attached to the jacking frame and comprises an impact plate and shock absorbers between the impact plate and the jacking frame. The impact plate comprises an impact plate opening configured to engage and support a pneumatic rammer. The rammer can be replaced with a hydraulic drive with a shaft protruding through the opening.

This utility model discloses a pipe clamp with overload protection function, belonging to the field of pipe clamp technology. It includes a top block, a middle block, and a bottom block. The middle block is provided with a first locking seat on both sides and a second locking seat on the other two sides. The top block is provided with an upper locking seat on both sides and the bottom block is provided with a lower locking seat on both sides. An upper positioning hole is provided between the top block and the middle block, and a lower positioning hole is provided between the bottom block and the middle block. This utility model, through a modular three-block structure (top block, middle block, and bottom block) and a multi-directional locking seat design, achieves synchronous fixing of pipelines at multiple angles, greatly improving space utilization. Furthermore, through the overload protection structure, a three-stage spring system (butterfly spring and wave spring working together) can absorb high pipeline expansion. When the pressure exceeds the threshold, a buffer mechanism is automatically triggered, effectively reducing the risk of pipe bursting.

A compact, open path vertical cable pulling apparatus, having a low center of gravity and composed of two detachable, single person hand-portable components. The apparatus is competent to pull cable horizontally through space underground with a pulling force in the range of at least about 20 to 100 tons using low pressure flow hydraulics and has utility in the cable pulling industries, including in the drilling and horizontal directional drilling industries, and as part of a method for pulling cable through space, including pulling cable through space in the pipe bursting and trenchless pipe replacement industries.

The present invention provides a method and device for determining a full-cycle maintenance strategy for a subsea pipeline system. First, based on nonlinear finite element analysis and the Monte Carlo method, the evolution laws of the ultimate burst pressure and failure probability of the corroded pipeline structure over time are solved, which can effectively describe the influence laws of the interaction between nonlinear factors and corrosion defects on the structural ultimate burst pressure and corresponding failure probability. Subsequently, an economic evaluation system is introduced to calculate the cost of pipeline burst failure and the input cost of the maintenance strategy. Finally, a multi-objective optimization algorithm is coupled with the above two parts of the module to complete the information mapping of the full-cycle failure probability evolution characteristics of different pipe sections and the corresponding economic costs, so as to find the optimal maintenance plan. The maintenance strategy determination method can comprehensively consider the failure risk of the pipeline system under the influence of the interaction between corrosion defects and the corresponding failure economic cost, so as to unify the safety and economy of the pipeline operation project.

This application discloses a building electromechanical installation structure and installation method based on BIM technology, relating to the field of building installation. It includes a building electromechanical installation structure based on BIM technology, comprising a pipe body with a liquid flow channel penetrating the pipe body. The pipe body has a sliding hole penetrating the pipe body to the liquid flow channel, and a sliding block sliding on the sliding hole, the sliding direction of the sliding block being the through direction of the sliding hole. The pipe body is provided with a protective cylinder, which is sleeved on the outer wall of the pipe body, and a clearance groove is provided on the inner wall of the protective cylinder. With the sliding block and clearance groove, in actual use, when the internal pressure of the liquid flow channel increases, the air pressure in the clearance groove does not change. Subsequently, the internal pressure of the liquid flow channel causes the sliding block to move towards the bottom of the clearance groove. Due to the increased volume, the internal pressure of the liquid flow channel decreases, reducing the possibility of pipe bursting due to excessive internal pressure, thus making the water supply from the water supply pipe more stable.

The application discloses a stress calculation system and method for a composite material reinforced defective pipeline. Relevant parameters are measured; the hoop stress of a pipeline matrix defect area, the hoop stress of a filling material, the hoop stress of a composite material, the axial stress of the pipeline matrix defect area and the axial stress of the composite material in an elastic stage of the composite material reinforced defective pipeline are calculated; the pressure when the pipeline matrix yields is calculated; the hoop stress of the pipeline matrix defect area, the hoop stress of the filling material, the hoop stress of the composite material, the axial stress of the pipeline matrix defect area and the axial stress of the composite material after yielding are calculated; and the burst pressure is calculated. The method considers the elastic-plastic constitutive relationship before and after the pipeline matrix yields, and can accurately calculate the hoop stress and the axial stress of the pipeline matrix, the filling material and the composite material in the whole process from no load to pipeline burst. The method is simple, and has high operability, and the accuracy of the calculation of the ultimate internal pressure bearing capacity is improved.

The invention belongs to the technical field of urban water supply, and provides an urban water supply system water plant joint scheduling method and system, which accurately controls the water supply amount and water supply pressure of each water plant through a primary optimization scheduling model, ensures the quality of water supply service, can enable a pipe network to operate at a small and gently changing pressure, and improves the water supply efficiency. The resource waste is effectively reduced, and the pipe explosion and leakage risks caused by overlarge water pressure fluctuation are obviously reduced; meanwhile, based on the fact that a current urban water supply system widely adopts a variable-frequency speed regulation pump, and multiple pump stations are used for combined water supply to adapt to the dynamically-changing water use requirement, the optimal rotating speed and the water supply amount of the water pumps in different time periods and the optimal combination of the water pumps are determined through a two-stage optimization scheduling model according to the water use curve rule of a user. The high-efficiency operation potential of the variable-frequency speed regulation pump is fully utilized, so that the consumption of water supply resources and energy is greatly reduced, the water supply cost is saved, and the pump stations are matched more harmoniously through dispatching among the pump stations.

Described herein are multi-tool boring systems and methods of operating such systems for tunnel boring and / or underground pipe installation. A multi-tool boring system is specially configured for fast installation and replacement of various tools, such as a pneumatic rammer and a hydraulic drive, enabling different operating modes of the system, e.g., pilot tube installation, auger boring, pipe ramming, pilot pullback boring, static pipe bursting, and non-contact boring. In some examples, a multi-tool boring system comprises a track assembly, a jacking frame slidably supported on the track assembly, and an impact plate assembly, which is attached to the jacking frame and comprises an impact plate and shock absorbers between the impact plate and the jacking frame. The impact plate comprises an impact plate opening configured to engage and support a pneumatic rammer. The rammer can be replaced with a hydraulic drive with a shaft protruding through the opening.

The utility model relates to the technical field of steam recovery, in particular to a boiler steam recovery system. According to the technical scheme, the device comprises an outer tank body, a steam pipe and a stirring mechanism, a spiral disc is fixedly installed on the outer side of the steam pipe, the spiral disc is attached to the inner wall of an inner tank body, and water removal discs are installed in the steam pipe at equal intervals. Steam is spirally conveyed through the spiral disc, the contact area with the steam is increased, steam and water are fully separated, the separated water is deposited at the bottom of the inner tank body, and the separated steam is further subjected to gas-liquid separation through the water removal disc and then ascends into the steam pipe. And then multi-stage water vapor separation is carried out through the water removal disc in the steam pipe, so that the steam drying function is achieved, the problem that water in the steam is deposited in the pipeline, the internal pressure of the pipeline is easily increased, and consequently the pipeline is exploded is effectively solved, and the safety of the steam in the conveying process is guaranteed.