143 results about "Hydrostatic test" patented technology

The invention relates to the technical field of hydraulic test of nickel alloy pipes, and discloses a hydraulic test system for a thin-wall nickel alloy pipe. According to the system, in the axial loading state of the thin-wall nickel alloy pipe, a closed water pressure cavity is established through an annular sealing clamp, and then strain distribution data on the surface of the pipe body is collected through a distributed optical fiber sensor array. And constructing a three-dimensional stress field reconstruction model based on the acquired strain distribution data, calculating an equivalent plastic deformation threshold value of the pipe body under different water pressure gradients, adjusting a water pressure loading curve slope parameter according to the equivalent plastic deformation threshold value, and generating a dynamic water pressure loading instruction. And the high-frequency pressure pulse generator executes the instruction, synchronously triggers the X-ray diffractometer to collect lattice distortion data of the tube body, inputs the data into the material microscopic damage evolution model, and outputs a microscopic defect spatial distribution map. And finally, material constitutive parameters of the three-dimensional stress field reconstruction model are corrected based on the atlas, closed-loop feedback control is formed, and multi-dimensional data acquisition and accurate management and control of the thin-wall nickel alloy pipe hydrostatic test are achieved.

The invention relates to the technical field of nickel alloy pipe water pressure detection, and discloses a thin-wall nickel alloy pipe inner wall water pressure test detection system and method. The method comprises the steps that a closed water pressure environment is established in a pipe, a preset pressure gradient is applied, and pipe wall deformation response data are collected through a distributed sensing array; and generating a composite feature matrix containing axial strain, circumferential stress and radial displacement features through multi-dimensional feature extraction, inputting the composite feature matrix into a material performance degradation evaluation model, and simulating microstructure change to output a potential defect distribution map. Dynamically adjusting the water pressure gradient and the pressure maintaining time according to the map, executing a secondary water pressure test, and capturing a microscopic deformation sequence image through high-frequency imaging; comparing the image with a model prediction result identification deviation value, and iteratively updating a model parameter to optimize a detection threshold value; the test is completed by optimizing the threshold value, qualified pipe section marks and defective pipe section positioning coordinates are output, and the comprehensiveness and accuracy of thin-wall nickel alloy pipe inner wall defect detection are improved.

The invention provides an intelligent adjusting method and system for a steel pipe hydrostatic pressure valve, and relates to the technical field of equipment control, and the method comprises the steps: obtaining the specification parameters of a to-be-tested steel pipe; the volume of the steel pipe is calculated according to the specification parameters, adjusting parameters are dynamically determined according to the volume and the wall thickness of the steel pipe, meanwhile, a target pressure value is set according to a preset pressure curve, and in the hydrostatic pressure testing process, pressure signals and flow signals in the steel pipe are collected in real time; comparing the pressure signal with a set target pressure value to obtain a pressure deviation, and integrating the pressure signal and the flow signal which are acquired in real time into a group of multidimensional discrete data sequences according to a sequential relationship. According to the invention, accurate, stable and automatic closed-loop control of the pressure in the hydrostatic pressure test process of the steel pipe is realized.

The invention provides a nuclear power generator compactness test method. The nuclear power generator compactness test method comprises the following steps: S1, cleaning; and the to-be-detected product is comprehensively cleaned. S2, preparation before measurement; and the end socket and the cover plate are assembled to ensure that the product forms a sealed cavity. And S3, carrying out an airtight test. And S4, preliminary inspection. And S5, carrying out a hydrostatic test. And S6, performing secondary inspection. And S7, reducing the pressure. And S8, dismounting the end socket and the cover plate, and completing the detection. By combining the airtight test and the hydrostatic test, the compactness of the nuclear power generator can be comprehensively detected, a detection blind area possibly existing in a single test method is effectively avoided, a special pressure boosting and reducing mode is adopted for hydraulic pressure detection, the accuracy and reliability of a test result are guaranteed, welding residual stress can be effectively eliminated, and the reliability of the nuclear power generator is improved. And the sealing performance and the structural stability of a nuclear power generator product are obviously improved.

The invention discloses a pressure steel pipe bifurcated pipe hydraulic pressure test monitoring system and method, and relates to the technical field of bifurcated pipe hydraulic pressure monitoring, and the steel bifurcated pipe hydraulic pressure monitoring system comprises a stress measurement module, a pressure measurement module, a data monitoring platform, and a water pump automatic pressurization control module. The stress measurement module is used for measuring the stress of the steel bifurcated pipe according to the stress characteristics of the Y-shaped symmetrical internally-reinforced steel bifurcated pipe, wherein the stress measurement areas of the steel bifurcated pipe are an obtuse angle area, a crescent rib side pipe wall and a crescent rib plate; the pressure measuring module is provided with four steel pipes on the steel branch pipe, and the four steel pipes are communicated to the interior of the steel branch pipe and are respectively a water injection pipe, a water drainage pipe, an exhaust pipe and a pressurizing pipe. Through a hydraulic test, welding residual stress can be redistributed, tip stress and construction additional deformation of the steel bifurcated pipe are eliminated, local peak clipping stress elimination of the steel bifurcated pipe is achieved, and therefore the overall brittle failure resistance and stress corrosion resistance of the steel bifurcated pipe are improved, and safe and stable operation of the steel bifurcated pipe is guaranteed.

The application relates to a construction method of an inner water pressure device of an ultra-large-caliber reinforced concrete pipe jacking pipe section, which comprises the following steps: S00, hoisting a bottom blocking plate; S10, installing a pipeline and a positioning sleeve ring; S20, installing a top blocking plate; S30, performing an inner water pressure test on a single pipe section; S40, installing a pipe section splicing support and hoisting a lower pipe section; S50, installing a pipe section interface splicing device and splicing an upper and lower pipe jacking pipe section; S60, assembling a hoisting type pipe jacking interface inner water pressure test device; S70, installing the hoisting type pipe jacking interface inner water pressure test device; S80, performing an inner water pressure test on a pipe section interface; and S90, installing a pipe jacking interface opening angle positioning device. The application has the advantages that a pipe jacking pipe section interface splicing device and a pipe jacking inner water pressure counter-pulling adjustment test frame are adopted, the structure design is ingenious, assembly is convenient, the positioning sleeve ring can be used for adjusting the perpendicularity of the pipe section, the sealing property of the structure can be maintained, the leakage phenomenon is reduced, the reliability of detection data is improved, and remarkable economic benefits are achieved.

The utility model relates to an explosion-proof motor shell hydraulic pressure test device, and belongs to the technical field of explosion-proof motor production, the explosion-proof motor shell hydraulic pressure test device comprises a base, an upper sealing gasket, a lower sealing gasket and a hydraulic mechanism arranged on the base, the surface of the upper sealing gasket is provided with a water inlet hole, the output end of the hydraulic mechanism is fixedly provided with a pressing block, and the pressing block is provided with a water inlet pipe; the water inlet pipe is communicated with the water inlet hole and externally connected with a pressure system, the surface of the base is concavely provided with a water storage tank, the water storage tank is externally connected with a drainage pipe, sliding rails are symmetrically fixed to the base, supporting tables are symmetrically and slidably connected to the sliding rails, and lower sealing gaskets are arranged on the surfaces of the supporting tables. According to the device, two supporting tables are arranged, when one supporting table moves to the bottom of the hydraulic mechanism for testing, the other supporting table can conduct feeding and discharging actions of a motor shell, the two supporting tables conduct testing alternately, feeding and discharging can be conducted on the other supporting table in the testing process of one motor shell, and therefore uninterrupted testing is achieved; and the test efficiency is improved.

The utility model discloses a hydraulic test device for a chemical pipeline, which comprises a base and a protective box, the protective box is arranged at the top of the base, a supporting plate is arranged at the upper part in the protective box, a gear shaft is arranged between the inner walls, close to one side of the front surface, above the supporting plate in the protective box through a bearing seat, and gears are arranged at positions, corresponding to tooth mark strips, on the gear shaft; first telescopic rods are arranged on the tops, close to the front face, of the supporting plates on the inner sides of the gears, the output ends of the first telescopic rods penetrate through the supporting plates to be fixedly connected with pipe covers, arc-shaped clamping blocks are arranged on the two sides in the pipe covers, and springs are evenly arranged on the tops and the bottoms of the outer sides of the clamping blocks to be connected with the inner walls of the pipe covers. According to the utility model, by protecting the connecting pipe, the connecting pipe can be prevented from being damaged, and before a test, the clamping block can be used for clamping and limiting the connecting part, so that the connecting part can be prevented from deviating during the test, and the test result can be prevented from being influenced.

The utility model provides a multifunctional test tool for a cold air pushing and punching device. The tool comprises a tool frame body, a pushing and punching device fixing structure, a pressure test structure, an inner cylinder protection plate, a thrust selection test structure, a pipeline assembly and a pressure sensor. The pushing and punching device fixing structure, the pressure test structure, the inner cylinder protection plate and the thrust selection test structure are all mounted on the tool frame body; the cold air pushing and punching device is fixedly mounted on the pushing and punching device fixing structure; the pipeline assembly is connected with the cold air pushing and punching device. The pressure sensor is connected with the pipeline assembly; the pipeline assembly is connected with the stamping ground pipeline, the water pressure test bench and / or the air pressure test bench. The device is simple in structure and convenient to install and operate, various types of tests on the cold air pushing and punching device can be achieved, and the test efficiency and the test multifunctionality of the cold air pushing and punching device are improved.

The utility model relates to the technical field of water pressure test devices, and discloses a water pressure test device which comprises a base, the top end of the base is fixedly connected with air cylinders arranged at equal intervals, the output end of each air cylinder is fixedly connected with a left supporting plate, and the right side face of each left supporting plate is fixedly connected with a left elliptical head. The top end of the base is fixedly connected with supporting bases arranged at equal intervals. According to the water pressure test device, the plurality of cylinders corresponding to the workpieces are arranged, so that the workpieces with different lengths can be conveniently positioned, the water pressure test operation of the workpieces with different lengths can be completed, and the water outlet and the right elliptical sealing head capable of sealing the water outlet are arranged, and the spring is arranged on the right side surface of the right supporting plate; the water outlet can be automatically opened and closed under the pushing of the workpiece, so that the water pressure test operation can be conveniently carried out on the workpieces with different numbers, and the problems that the existing water pressure test device is inconvenient to carry out test operation on the workpieces with different lengths and different numbers, and the practicability is low are solved.

The utility model discloses an open-end water pressure test device for watertight cable detection, which comprises a pressure source, a sealing test cavity, a control system and a data acquisition module, and is characterized in that a recovery disc at the top of the sealing cavity can collect water brought out in the exhaust process and guide the water into a water tank for cyclic utilization, so that water resource consumption is reduced; the filtering assembly continuously purifies a circulating medium, the pollution risk to the environment is reduced, the environment-friendly manufacturing concept is met, the whole device adopts modular design, all functional assemblies are reasonable in layout, and the occupied area is small; the control system is integrated on a PLC or a microprocessor, the operation interface is simple, the functions of one-key starting, automatic pressure maintaining, pressure relief and the like are supported, and the labor intensity of operators is remarkably reduced.

The utility model belongs to the technical field of photovoltaic modules, and discloses a photovoltaic module probe static pressure test device, which comprises a test platform and a photovoltaic module, the photovoltaic module is arranged on the upper surface of the test platform, and positioning grooves are arranged on the left side and the right side of the test platform. Driving mechanisms for performing comprehensive static pressure experiments on the upper surface of the photovoltaic module are slidably connected into the two groups of positioning grooves, clamping grooves are formed in the upper surface of the test platform, positioning mechanisms for limiting the position of the photovoltaic module at the upper end of the test platform are installed in the clamping grooves of the test platform, and storage mechanisms are arranged on the upper surfaces of the driving mechanisms; a reset mechanism is arranged on the outer surface of the driving mechanism, and the driving mechanism is started to drive the detection end of the driving mechanism to move up and down, back and forth and left and right, so that the driving mechanism replaces a belt driving mechanism to comprehensively move at the upper end of the photovoltaic module, and the stability of the subsequent driving mechanism in the using and moving process is improved.

The utility model provides hydraulic test equipment for a diesel engine cylinder sleeve, and belongs to the field of test equipment. Comprising a support frame, a top plate and a bottom plate, the supporting sleeve is arranged in the mounting through groove and detachably connected with the mounting through groove, and a first sealing ring is mounted on the inner side of the supporting sleeve and used for mounting the air cylinder sleeve in a matched mode; the test sleeve is integrally connected to the bottom side of the top plate, a water inlet pipe and a water outlet pipe are mounted on the top side, an annular stop block is mounted on the inner side of the test sleeve, and a second sealing ring is mounted on the inner side of the annular stop block; the pressing plate is arranged on the top side of the top plate, fixedly connected with the top plate through a pressing bolt and used for fixing the air cylinder sleeve. The diesel engine cylinder sleeve is supported on the supporting sleeve for a hydrostatic test, whether the cylinder sleeve leaks water or not can be judged only by filling the test sleeve and the diesel engine cylinder with water and observing the reading change of the shock-proof pressure gauge during the test, meanwhile, the supporting sleeve and the annular stop block can be replaced, the cylinder sleeves of different sizes can be tested, and the applicability of the device is improved.

The utility model relates to the field of medium mixing, concretely relates to a simple tank hetero -media mixing device, in order to solve the rust of carbon steel material under the condition of existing condition and production cycle requirement after water pressure test, cause the problem of local area because manual unreachable cleaning, the shell top of this scheme is open, the shell bottom connects the bottom plate, left inlet pipe and right inlet pipe communicate with shell inner space, rotate operating lever B for controlling gland B switch above mixed medium discharge gate, the longitudinal narrow section of corrosion inhibitor bin is U type, the left and right ends of corrosion inhibitor bin are fixedly connected with the upper portion of shell inner wall, the left and right end side walls of corrosion inhibitor bin are coplanar with shell inner wall, corrosion inhibitor bin divides shell inner space, corrosion inhibitor bin is A cavity, the rest space is B cavity, rotate operating lever A for controlling gland A switch above discharge gate, this scheme makes corrosion inhibitor and test water mix fully and distribute evenly in water body.

The utility model discloses a pressure stabilizing pipeline for a water pressure test of an air storage tank, and relates to the technical field of pressure containers. The input end of the first stop valve is connected to the output end of the pressure test pump, and the output end is connected to the input end of the first pipeline; the output end of the first pipeline is connected to the input end of the surge tank assembly; the output end of the surge tank assembly is connected to the input end of the second pipeline; the output end of the second pipeline is connected to the input end of the second stop valve; the output end of the second stop valve is connected to the water injection port of the air storage tank; the piezometric tube is of a bent buffer structure, one end of the piezometric tube is fixedly connected to the top of the surge tank assembly, and the other end of the piezometric tube is detachably connected to the pressure gauge. Therefore, the pressure change generated by the pressure test pump can be effectively buffered, and the test pressure is always maintained in the preset range, so that the risks of equipment damage and process failure possibly caused by pressure fluctuation are reduced.

The utility model relates to the technical field of steel pipe hydrostatic testing, in particular to a steel pipe hydrostatic testing device which comprises a base, a first support arranged at the end of the base, a pressurizing pipe fixedly arranged on the first support, a connecting pipe connected to one end of the pressurizing pipe, a water inlet cavity arranged in the pressurizing pipe, and a water outlet cavity communicated with the connecting pipe. A sealing head is mounted at one end of the pressurizing pipe away from the connecting pipe; a sealing ring is sleeved outside the sealing head; a pressurizing mechanism is mounted on the pressurizing pipe; the sealing ring is arranged between the pressurizing mechanism and the sealing head; the pressurizing mechanism is matched with the sealing head to extrude the sealing ring; a first through hole is formed in the sealing head; the first through hole communicates with the water inlet cavity. The pressurizing mechanism and the sealing head are matched to extrude the sealing ring, friction between the sealing ring and the inner wall of the to-be-tested steel pipe is increased, axial deformation of the sealing ring is avoided, sealing performance is enhanced, and the sealing effect is improved.

The invention belongs to the field of nuclear power station safety systems, and particularly relates to a method for shortening hydrostatic test time of a medium-pressure safety injection tank during overhaul of a VVER unit, which comprises the following steps: step 1, transferring a boric acid solution to a medium-pressure safety injection tank which does not need to be overhauled by the medium-pressure safety injection tank which needs to be overhauled; 2, the medium-pressure safety injection tank needing to be overhauled transfers a boric acid solution to the emptied demineralized water tank; 3, the medium-pressure safety injection box needing to be overhauled transfers the boric acid solution to the boric acid solution collecting box; 4, the medium-pressure safety injection tank needing to be overhauled is overhauled according to the overhaul plan, and the overhauled medium-pressure safety injection tank is obtained after overhaul is completed; 5, filling the overhauled medium-pressure safety injection tank with a boric acid solution; step 6, preheating the overhauled medium-pressure safety injection tank and a pipeline valve thereof; and step 7, performing a hydraulic pressure test on the overhauled medium-pressure safety injection tank to complete the hydraulic pressure test on the overhauled medium-pressure safety injection tank. The method can effectively relieve the overhaul pressure of the medium-pressure safety injection system, shorten the overhaul period and save overhaul materials.

The present application relates to the technical field of pipeline hydrostatic test, and especially relates to a pressure water supplementing and metering device for municipal pipeline hydrostatic test, which comprises a water tank, a booster pump, a flowmeter and a control cabinet, a program controller is arranged in the control cabinet, further comprising a pressure sensor and a vibration sensor arranged along the axial direction of the pipeline to be tested, and an active tunable damper arranged between the pump outlet and the pipeline; the program controller synchronously collects pressure and vibration data, carries out correlation analysis on the data, generates a pressure wave space-time propagation graph, calculates a water hammer risk index and divides a risk level through a nonlinear fusion model according to the dominant frequency, amplitude, propagation speed change rate and vibration energy of the pressure wave, selects an inhibition strategy according to the risk level, calculates a pressure peak value reduction rate and a wave fluctuation decay time according to the data after inhibition, and generates an effect evaluation value. The present application realizes active sensing, graded inhibition and effect evaluation of water hammer risk, and improves the safety and intelligent level of the hydrostatic test.

The utility model provides a gas cylinder hydrostatic testing machine which comprises a containing mechanism, a control mechanism, a measuring mechanism and an adjusting seat, a containing cavity used for containing a gas cylinder is formed in the containing mechanism, and the control mechanism is communicated with the containing cavity and used for injecting water into the containing cavity; the measuring mechanism is communicated with the gas cylinder and used for injecting pressurized liquid into the gas cylinder, the measuring mechanism comprises a measuring cup, a connecting pipe and a balance, one end of the connecting pipe is communicated with the containing cavity, the other end of the connecting pipe extends into the measuring cup, the measuring cup is borne on the balance and used for bearing water overflowing from the containing cavity when the pressurized liquid is injected into the gas cylinder, and the adjusting seat is connected with the measuring mechanism. The length adjusting device is used for adjusting the length of the connecting pipe in the measuring cup to be a preset value so as to prevent the buoyancy of the connecting pipe from being influenced by a water body, thereby improving the measurement precision of the gas cylinder hydrostatic testing machine on the residual deformation rate of the gas cylinder.

The utility model discloses a fire-fighting gas cylinder bursting test device which comprises a water pressure testing machine body, a movable opening and closing door is fixedly installed on the inclined face of the water pressure testing machine body, a gas cylinder frame is fixedly installed in a bursting chamber of the water pressure testing machine body, and supporting feet are fixedly installed at the four corners of the lower surface of the water pressure testing machine body. An access door is fixedly installed on the front surface of the hydrostatic testing machine body, and the movable opening and closing door comprises a guide rail plate frame, a first isolation net, a movable plate, a second isolation net, a gear and an electric motor. According to the fire-fighting gas cylinder bursting test device, the fire-fighting gas cylinder bursting test device can be automatically opened and closed through the movable opening and closing door, manual opening is not needed, a user does not need to worry that a cover plate hits hands due to instability of the support, and fire-fighting gas cylinders of different lengths and thicknesses can be automatically and firmly clamped through the gas cylinder frame; therefore, the fire-fighting gas cylinder is more convenient and labor-saving to disassemble and assemble, and the operation mode of installing the fire-fighting gas cylinder is simpler.

The utility model discloses a hydrostatic test tool for a conductive copper pipe, which relates to the technical field of hydrostatic tests for conductive copper pipes and comprises a support structure and a test mechanism. The test mechanism comprises a lifting seat, a connecting piece, a first sealing piece, a second sealing piece, a lifting assembly and a moving assembly; a supporting plate, a supporting rod, a clamping piece, a clamping block, a limiting block, a limiting rod and a limiting spring can support and limit a conductive copper pipe, and a hydraulic cylinder, a moving rod, a second rack, a second gear, a first gear, a first rack, a lifting rod and a guide rod control a first sealing piece and a second sealing piece through a lifting base to adjust the height. The driving motor, the bevel gear structure, the lead screw transmission device and the connecting piece control the first sealing piece and the second sealing piece to seal the conductive copper pipe, hydrostatic tests can be rapidly carried out on different conductive copper pipes, and the test efficiency of the hydrostatic test tool is improved.

The present application relates to the technical field of nickel alloy pipe water pressure detection, and discloses a thin-walled nickel alloy pipe inner wall hydraulic test detection system and method. The method comprises establishing a closed water pressure environment in the pipe and applying a preset pressure gradient, collecting pipe wall deformation response data through a distributed sensing array; generating a composite feature matrix containing axial strain, circumferential stress and radial displacement features through multi-dimensional feature extraction, inputting a material performance degradation evaluation model, simulating microstructure changes to output a potential defect distribution map. The water pressure gradient and pressure holding time are dynamically adjusted according to the map, a second hydraulic test is performed, and micro-deformation sequence images are captured through high-frequency imaging; the deviation amount is identified by comparing the images with the model prediction results, the model parameters are iteratively updated to optimize the detection threshold; the test is completed using the optimized threshold, and the qualified pipe section marker and defect pipe section positioning coordinates are output, thereby improving the comprehensiveness and accuracy of thin-walled nickel alloy pipe inner wall defect detection.

The invention relates to the field of water pressure test devices, in particular to an external water pressure test device and method for connecting a circular interface product, the device comprises a test cabin body with two end parts being arc surfaces, and an inner cavity for carrying out an external water pressure test is formed in the test cabin body; a bottom pedal is fixedly arranged at the bottom of the inner cavity, a connecting base is fixedly arranged on the bottom pedal, the connecting base is in a hollow cylinder shape, the connecting base penetrates through the bottom of the test cabin body, and the connecting base is connected with a middle piece capable of being adaptively connected with different products through a flange. The device can be adapted to tests of products with different circular interfaces.

The application discloses a multi-factor coupling error compensation calibration method for gas cylinder external water pressure test, and relates to the technical field of special equipment.The application couples and weights each systematic error value, the corresponding error effectiveness coefficient and the preset weight coefficient to generate a high-precision compensated standard bottle calibration deformation, and uses the same as the final calibration value of the standard bottle to calibrate the water pressure test device, simultaneously updates the calibration parameter library to form a closed-loop feedback.In general, the application adopts a three-in-one technical path of multi-factor decoupling, dynamic reliability evaluation and adaptive weighted compensation, greatly improves the accuracy, stability and repeatability of the standard bottle calibration result, fundamentally enhances the overall reliability and intelligent level of the gas cylinder water pressure test system, and provides solid technical support for the safety inspection of special equipment.

The utility model discloses a spiral pipe water pressure testing machine, which relates to the spiral pipe water experiment field, and comprises a workbench, the top end of the workbench is provided with a water pressure box body, two sides of the interior of the water pressure box body are respectively provided with a fixed seat and a slide rail, and the opposite sides of the fixed seat and the slide rail are respectively provided with a first limiting block in a sliding manner. In actual operation, the two ends of the spiral pipe body can be placed in the corresponding clamping grooves respectively, the baffles can block the top ends of the clamping grooves by rotating the baffles, and when the two first limiting blocks descend, the two ends of the spiral pipe body can be clamped by the clamping grooves. When the spiral pipe body descends, the spiral pipe body can be driven to enter the water pressure tank body, along with descending, the spiral pipe body can be driven to be located at different depths in the water pressure tank body, the larger the depth is, the higher the water pressure is, and the baffle can avoid the situation that the spiral pipe body floats upwards due to buoyancy, and consequently detection is inaccurate.

The invention belongs to the field of hydraulic test equipment, and provides a shuttle-valve-free type small-diameter seamless steel pipe hydraulic test machine which comprises a water tank, a vertical plate is fixedly connected to one end of the interior of the water tank, a water outlet pipe is fixedly installed on the side face of the vertical plate, and a rotating connector is rotatably installed at one end of the water outlet pipe. A left end plate is fixedly installed on the rotating connector, and a clamping mechanism is installed at the other end of the interior of the water tank. According to the invention, the detection mechanism is arranged, and a plurality of detection assemblies are arranged on the detection mechanism, so that when the seamless steel pipe is deformed, the detection mechanism can detect a bulge on the seamless steel pipe and prompt a worker, thereby realizing the hydrostatic test detection of the seamless steel pipe, and compared with the visual inspection of the worker, the detection efficiency is improved. The device can detect tiny deformation on the seamless steel tube, so that the detection result is more accurate, missing detection and error detection are avoided, and the detection efficiency is greatly improved due to the fact that a plurality of parts on the seamless steel tube are detected at a time.

The invention relates to a method for predicting the service life of a glass reinforced plastic pipe under the stress action. The method comprises the following specific steps: performing a hydrostatic test on a to-be-tested glass reinforced plastic pipe under the stress action; performing a hydraulic bursting test on the glass fiber reinforced plastic pipe subjected to the hydrostatic test; fitting the data of the hydrostatic pressure time and the bursting strength value, taking the logarithm value of the hydrostatic pressure time as an abscissa and the logarithm value of the bursting strength as an ordinate, performing numerical fitting by utilizing a linear regression method to obtain a fitting equation lnP = a * lnt + b of the hydrostatic pressure time and the bursting strength value, and calculating the service life of the glass fiber reinforced plastic pipe. The invention provides a novel glass reinforced plastic pipe service life prediction method based on stress action, overcomes the defects of the existing service life prediction technology of a glass reinforced plastic pipe for gathering and transportation in an oil and gas field, and can predict the service life of the glass reinforced plastic pipe under the combined action of four influence factors, namely pipe characteristics, a conveying medium, environmental factors and a stress state. The method is short in test period, convenient to implement and high in prediction reliability.

The present application relates to the technical field of steel pipe detection, and more particularly to a steel pipe coil water pressure detection system, comprising a control room and a hydrostatic test room, wherein a coil is arranged in the hydrostatic test room, a mobile trolley assembly and a guide rail are arranged at the bottom of the coil, one end of the guide rail is arranged outside the hydrostatic test room, an auxiliary system is arranged above the guide rail, the coil is lifted and moved outside the hydrostatic test room to the mobile trolley assembly by the auxiliary system, and the mobile trolley assembly enters the hydrostatic test room along the guide rail. The steel pipe coil water pressure detection system is cooperatively arranged by the auxiliary system and the mobile trolley assembly, the coil is clamped and fixed by the auxiliary system during the whole loading and unloading process, and the coil is slowly moved by lifting, so that the coil or pipeline is effectively prevented from being randomly rolled and placed due to the lack of any blocking or protection measures, and a large impact force is avoided, and safety hazards are avoided.

This invention discloses a manufacturing method for a pressure-bearing module of a floating generator waste heat boiler, comprising: using an infrared positioning instrument for high-precision positioning of the tube sheet; pre-installing positioning sleeves on the spiral finned tubes; using a bottom-up transverse tube-threading sequence, with the aid of guiding fixtures and tube-feeding tools; using a pyramid-shaped sequence from bottom to top and from the middle to both sides for connecting tube welding; performing local heat treatment after welding by laying heating plates flat and filling the gaps with insulation material to form a box-type furnace unit; dividing the module into multiple independent passages for hydrostatic testing before assembling the header, and then purging and drying with compressed air after the test. This invention solves the problems of easy damage to ultra-long spiral finned tubes when threaded between dense tube sheets, low efficiency of local heat treatment of numerous T91 / T22 weld joints, and corrosion caused by incomplete drainage after hydrostatic testing. The weld joint qualification rate reaches 98%, and the heat treatment efficiency is improved by 8 times.

The invention provides a long-distance pipeline hydrostatic test innovation method and related equipment, and the method comprises the steps: carrying out the pressure test segmentation of a long-distance pipeline based on the related parameters of the long-distance pipeline, so as to obtain a first-stage pipe section; according to a water filling control condition, the pipe section of the stage is filled with water, so that a pipe section of a second stage is obtained; continuously injecting water into the pipe section in the second stage to increase the pressure of the pipe section in the second stage to thermodynamic equilibrium pressure to obtain a pipe section in a third stage; boosting the pipe section of the third stage to obtain a first detection result and a pipe section of a fourth stage; in response to the fact that the first detection result is qualified, the air existing amount in the pipe section is calculated, and a second detection result and the pipe section of the fifth stage are obtained; performing a sealing test on the pipe section in response to the fact that the second detection result is qualified so as to obtain a third detection result; and if the third detection result is qualified, determining that the quality of the long-distance pipeline is qualified. Through the method, the accuracy of quality detection of the long-distance pipeline can be improved.