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86 results about "Burst test" patented technology
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A burst test is a destructive test and performed to determine the pressure overload capacity of pressure containing parts. The tests are performed with a fluid. This test is often performed as a pre-production test to meet safety and quality standards.
Bursting test box
The utility model discloses a blasting test box, which relates to the technical field of blasting and comprises a box body, a test space is defined by the box body, a first adjusting part is arranged on the top wall of the test space, and a plurality of second adjusting parts are arranged on the side wall of the test space; the top pressurizing plate is arranged in the test space and connected with the first adjusting piece, and the first adjusting piece is used for driving the top pressurizing plate to move in the height direction of the blasting test box; the plurality of side surface pressurizing plates are arranged in the test space and are respectively connected with the plurality of second adjusting pieces; the second adjusting pieces are used for driving the corresponding side surface pressurizing plates to move along the direction vertical to the height direction of the blasting test box. Therefore, the test space is defined by the box body, fragments and airflow generated during blasting can be effectively blocked, the risk of damage to the surroundings caused by the test is reduced, the confining pressure blasting condition under a certain vertical depth can be simulated by adjusting the positions of the top pressurizing plate and the multiple side face pressurizing plates, and the precision of the test result can be improved.
Owner:中国水利水电第七工程局有限公司 +1
A method for assessing the remaining life of a rupture disk in a large-caliber vacuum system of a nuclear power plant
ActiveCN115165582BNuclear energy generationMaterial strength using tensile/compressive forcesThermodynamicsMetallic materials
The present application relates to the technical field of nuclear power plant performance testing and discloses a method for assessing the remaining life of a bursting disk in a large-caliber vacuum system of a nuclear power plant, comprising the following steps: S1, obtaining a first sample of a reference bursting disk after a first fatigue test, obtaining a second sample of a bursting disk to be assessed, and performing a bursting test on the first and second samples to obtain a life coefficient; S2, performing a non-metallic material state test on non-metallic debris in the first and second samples after the test, obtaining non-metallic test results of similar non-metallic materials, and obtaining a first remaining life of the bursting disk to be assessed; S3, performing a metallic material state test on metallic debris in the first and second samples after the test to obtain a second remaining life of the bursting disk to be assessed; S4, obtaining a third sample of the bursting disk to be assessed, and performing a second fatigue test to obtain a third remaining life of the bursting disk to be assessed; and S5, obtaining a final remaining life of the bursting disk to be assessed based on the life coefficient, the first, second, and third remaining lives.
Owner:DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT +4
Pressure-resistant bursting test tool and pressure-resistant bursting test system
PCT designated stageWO2025179590A1Material strength using tensile/compressive forcesMechanical engineeringMechanics
The present application belongs to the technical field of pressure-resistant bursting tests. Provided are a pressure-resistant bursting test tool and a pressure-resistant bursting test system. The pressure-resistant bursting test tool is configured to test the bursting pressure of a pressure relief component, the pressure relief component comprising a first wall part which is provided with a pressure relief mechanism. The pressure-resistant bursting test tool comprises a first component and a second component, wherein the first component is provided with an inlet channel, the second component is provided with a discharge channel, the second component and the first component are configured to cooperatively clamp the first wall part, and the discharge channel is configured to discharge a fluid medium flowing through the first wall part from the inlet channel when the pressure relief mechanism is actuated. The pressure-resistant bursting test tool provided with such a structure has a simple structure, and when a bursting test is carried out on the pressure relief component, the first component and the second component can directly act on two sides of the first wall part of the pressure relief component, thereby simplifying the test process, and improving the pressure-resistant bursting test quality of the pressure relief component.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
hydrostatic testing machine
1. Name of the product in this design: Hydrostatic Testing Machine. 2. Application of this design: For long-term internal pressure resistance tests or instantaneous burst tests on pipes or fittings within a certain pressure range. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.
Owner:承德市金建检测仪器有限公司
Burst test chamber for high pressure boiler tubes
Owner:BHARAT HEAVY ELECTRICALS LIMITED
Hard rock explosion test system and method in deep ground stress environment
The invention discloses a hard rock explosion test system and method in a deep ground stress environment, and belongs to the technical field of rock explosion optimization design, the system comprises a ground stress hydraulic loading module, a sample bearing module, an explosion generation module, a non-contact optical measurement module and an automatic trigger device; the method comprises the steps of sample processing, system assembling, blasting structure laying, sample surface processing, ground stress loading, measurement preparation, explosion testing and data processing. According to the hard rock explosion test system and method in the deep ground stress environment, the blank of a large-size and large-equivalent explosion test platform and analysis means under deep in-situ ground stress is filled; a parallel efficient calculation digital image correlation analysis system is constructed, and an explosion pressure field can be quickly inverted.
Owner:SICHUAN UNIV
Automatic loading device for bursting test
The invention discloses an automatic loading device for a bursting test. The automatic feeding device for the bursting test comprises a rack, a test bearing plate, a protection box, a jacking driver, a truss and a grabbing device, the connecting end of the test bearing plate is rotationally installed on the rack, the jacking driver is installed on the rack, the protection box is arranged on the rack and covers the test bearing plate, and the grabbing device is arranged on the rack and covers the test bearing plate. A front box door and a top box door are arranged on the protection box, the front box door and the connecting end of the test bearing plate are located on the same side of the protection box, the bottom face of the front box door is lower than the top face of the test bearing plate, and the grabbing device is installed on the truss. According to the automatic feeding device for the blasting test, the steel ring and the rock model can be automatically placed on the test bearing plate, and meanwhile the rock model is drilled.
Owner:KUNMING UNIV OF SCI & TECH
Low-cost ultrahigh-pressure electromagnetic valve bursting test device driven by oil bag
The invention relates to an oil bag driven low-cost ultrahigh-pressure electromagnetic valve bursting test device which comprises a sealing pipe, a working cavity is formed in the sealing pipe, an expandable oil bag is arranged in the working cavity, and the inner space of the oil bag is isolated from the working cavity; the oil bag is communicated with an external pressurization system so as to swell under the pressurization effect of the pressurization system; the expandable oil bag is arranged in the working cavity of the sealing pipe, hydraulic oil is injected into the oil bag through the pressurization system, the oil bag is expanded, the volume of the working cavity is compressed, and therefore liquid which does not pollute equipment to be tested in the working cavity is pressed into the ultrahigh-pressure electromagnetic valve, and the bursting test on the high-pressure electromagnetic valve is achieved; compared with an existing scheme that hydraulic oil is directly used as a medium, pollution of the hydraulic oil to the interior of the electromagnetic valve can be effectively avoided, complex cleaning is not needed after the test, and the test cost and the operation difficulty are reduced.
Owner:浣江实验室
Fire-fighting gas cylinder bursting test device
The utility model relates to the technical field of gas cylinder performance detection, in particular to a fire-fighting gas cylinder bursting test device which comprises a shell, a sealing door is arranged on the front face of the shell, an observation window is arranged on the front face of the sealing door, a plurality of connecting holes and a fixing mechanism are arranged on the upper surface of the shell, and the fixing mechanism comprises a fixing assembly and a telescopic assembly. The fixing assembly comprises a moving seat connected into the shell in a sliding mode, a groove is formed in the upper surface of the moving seat, and limiting sliding grooves are formed in the side walls of the two sides of the shell. According to the utility model, through the arrangement of the fixing assembly, the gas cylinder to be tested can be conveniently fixed, so that a tester can enter a formal test process more quickly, the overall test efficiency is improved, and through the arrangement of the telescopic assembly, the test can be carried out in a relatively closed environment, so that the safety of the test can be improved; and a guarantee is provided for the safety of workers.
Owner:SHANDONG TAIJING BUILDING SAFETY TECH CO LTD
Condenser pipe pressure blasting test bench and method based on heat exchanger production
The invention relates to the technical field of condenser pipe pressure-resistant test equipment, and particularly discloses a condenser pipe pressure-resistant blasting test bed and method based on heat exchanger production, and the test bed comprises a first partition plate and a second partition plate which are fixedly arranged on the inner side wall of the test bed and are arranged in parallel up and down; the top of the first partition plate is provided with a test mechanism which extends to the top of the second partition plate and is arranged in a rectangular array, the outer wall of the test bench is provided with a cooling mechanism, and the test mechanism comprises a pressing mechanism which is arranged at the top of the second partition plate. And the end parts of the condensation pipes with different pipe diameters can be blocked, so that the stability of a subsequent pressure-resistant bursting test is improved, and the pressure sensor can enter different positions in the condensation pipe, so that whether the test of the condensation pipe is qualified or not can be mastered actually, and the practical test is convenient to use.
Owner:MODIN PUXIN THERMAL TECH (JIANGSU) CO LTD
Fire-fighting gas cylinder bursting test device
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.
Owner:SHAOXING JIADUN FIRE EQUIP CO LTD
Hydrostatic pressure burst test bench
1. Name of the product in this design: Hydrostatic Pressure Burst Test Stand. 2. Purpose of this design: To simulate the static high-pressure environment that the product may withstand in actual operation, and to verify whether it meets design standards, industry specifications or safety requirements by gradually applying pressure and monitoring data. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.
Owner:OUXUN INTELLIGENT TECHNOLOGY (TAIZHOU) CO LTD
Water pressure bursting test device for fire hose
The utility model discloses a fire hose water pressure bursting test device, which comprises a box body, a pressurization system, a test mechanism, a recovery mechanism and a control cabinet, the box body is provided with a platform, a funnel and a platform I, and the test mechanism is provided with an adjustable mechanism; the adjustable mechanism comprises two guide rails and two sliding seats, and the testing mechanism comprises two testing assemblies. According to the utility model, the pressurization system composed of the circulating motor and the booster pump is used for pressurization supply of water pressure, and the two test assemblies are combined to realize synchronous and rapid pressurization water injection, so that the pressurization effect and efficiency are improved, the pressure maintaining effect is ensured, and the test effect is improved; the funnel is used for guiding flow, and the recycling mechanism is used for testing collection of water after burst, so that waste of water resources is reduced, the recycled water is recycled for testing, and the testing cost is reduced.
Owner:DONGGUAN KEXIANG EXPERIMENTAL EQUIP
Pressure bursting testing device for filtering assembly
ActiveCN223742197UMaterial strength using tensile/compressive forcesWater flowMechanical engineering
The utility model relates to the technical field of testing devices, and discloses a filtering assembly pressure bursting testing device which comprises a water inlet pipeline, a pressure applying air cylinder and a pressure detector, the water inlet pipeline is used for conveying water to a filtering assembly, the pressure applying air cylinder is provided with a detection column, the detection column is provided with a connecting pipeline, the connecting pipeline is connected with the pressure detector, and the pressure detector is connected with the pressure detector. The water inlet pipeline, the pressure applying air cylinder and the pressure detector are all arranged on the base, a water retaining ring is arranged on the base, and the connecting pipeline is located in the water retaining ring. The water retaining ring is arranged on the connecting pipeline, so that water in the connecting pipeline can spread in the water retaining ring, the water retaining ring limits the water, the water is prevented from flowing to the outside, a worker can conveniently wipe the water, and the cleaning difficulty of the worker is reduced.
Owner:WENZHOU HUIRUN ELECTROMECHANICAL CO LTD
Pipe bursting test sealing device with variable pipe diameter
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.
Owner:ZHEJIANG UNIV
Process for forming indentations and weakened slots on a reverse dome burst disc
The present application relates to the technical field of rupture disc processing, and provides a forming process for indentations and weak grooves on a reverse-arched rupture disc, which can change the overall rigidity of the structure during forming, has high forming efficiency and low waste rate, and comprises the following steps: 1) a material selection and size design step of a flat plate-shaped rupture disc; 2) a forming step of blowing and forming the flat plate-shaped rupture disc into a reverse-arched rupture disc through a blowing and forming die; 3) a processing step of weak grooves on the reverse-arched rupture disc; and 4) a step of installing the reverse-arched rupture disc on a blasting test device to perform a blasting test, wherein the flat plate-shaped rupture disc in the step 2) is blown and formed into a reverse-arched rupture disc through a blowing and forming die, and at least one indentation is formed on the surface of the reverse-arched rupture disc at the same time.
Owner:YINGQIAO MACHINERY MFG
Rupture test method, system and device for rupture disk in hydrogen environment
The invention discloses a rupture test method, system and device for a rupture disk in a hydrogen environment, and relates to the technical field of material physical property test.The method comprises the steps that sweeping and blowing gas is introduced into a controlled test pipeline, and when monitoring data is lower than a threshold value, hydrogen is introduced into the controlled test pipeline; controlling the temperature of the test cavity to reach a preset temperature value and pressurizing the hydrogen to a preset target pressure value; the hydrogen pressure is obtained in real time; the pressure rise rate is controlled through a preset compound control algorithm; hydrogen concentration data are obtained in real time, and pressure change characteristics are analyzed; and when the hydrogen concentration data exceeds a threshold value or the pressure change characteristic conforms to the blasting judgment characteristic, a safety interlocking instruction is executed. According to the invention, through graded pressurization and pressurization rate closed-loop control, the problems that the blasting performance test cannot be carried out in a hydrogen environment and the hydrogen blasting performance of the rupture disk cannot be accurately tested and evaluated in the prior art are solved, and the blasting performance test and evaluation of the hydrogen blasting disk in a simulated real environment are realized.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST
Method for predicting service life of glass reinforced plastic pipe under stress action
PendingCN121720848AMaterial strength using tensile/compressive forcesMaterial strength using steady bending forcesGlass fiberBursting strength
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.
Owner:CHINA NAT PETROLEUM CORP +1
A method, system and device for testing rupture discs in a hydrogen environment
The application discloses a kind of hydrogen environment under rupture disc burst test method, system and device, it is related to material physical property testing technical field, the method includes: to the controlled test pipeline is admitted to sweep and blow gas, when monitoring data is lower than threshold value, to the controlled test pipeline is admitted to hydrogen;Control the temperature of test cavity reaches preset temperature value and pressurize hydrogen to preset target pressure value;Real-time acquisition hydrogen pressure;Pressure rising rate is controlled by preset composite control algorithm;Real-time acquisition hydrogen concentration data, analyze pressure variation characteristics;When hydrogen concentration data exceeds threshold value, or when pressure variation characteristics meet burst judgment characteristics, execute safety interlock instruction.The application solves the problem that the prior art cannot carry out burst performance test under hydrogen environment by staged pressurization and pressure rising rate closed-loop control, and simultaneously cannot accurately test and evaluate the hydrogen blast performance of rupture disc, realizes the burst performance test and evaluation of hydrogen rupture disc in simulated real environment.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST
Fluororubber sealing material as well as synthesis process and application thereof
The invention discloses a fluororubber sealing material and a synthesis process and application thereof, and belongs to the technical field of sealing materials, the fluororubber sealing material comprises the following components by weight: 100 parts of fluororubber, 5-30 parts of a filler, 1.0-1.8 parts of a vulcanizing agent, 0.2-1.0 part of a vulcanization accelerator, 0.2-1.0 part of a plasticizer, 3-12 parts of a stabilizer, and 0.2-1.2 parts of a release agent. According to the invention, a fluororubber composite formula is specially designed, and a fluororubber synthesis process is cooperatively controlled, such as a processing sequence and a feeding rate of materials and parameters such as internal mixing and open mixing temperatures, rotating speeds and the like, so that the fluororubber sealing material with better comprehensive performance is obtained, and when the fluororubber sealing material is applied to a sealing rubber strip of a hydrostatic pressure bursting test, standard requirements are met; and the tensile strength, the elongation at break and the compression permanent deformation are obviously improved.
Owner:CHINA NAT PETROLEUM CORP +1
Rubber and plastic pipe blasting test bench
ActiveCN223526158UAnalysing solids using sonic/ultrasonic/infrasonic wavesMaterial strength using tensile/compressive forcesWater leakageTest chamber
The utility model relates to a rubber and plastic pipe blasting test bench, which belongs to the technical field of rubber and plastic pipe production and comprises a test box, a rubber and plastic pipe body is arranged in the test box, and electric telescopic rods are fixedly mounted on two sides of the test box. The rubber and plastic pipe fixing device has the beneficial effects that when the rubber and plastic pipe body needs to be fixed, the rubber and plastic pipe body can be fixed in the test box by utilizing the supporting assembly and the clamping assembly, and the corresponding plug heads are pushed to be close to the middle by utilizing the electric telescopic rods, so that the plug heads and the rubber and plastic pipe body are in a clamping state; the sealing performance of the rubber and plastic pipe body and the plug can be improved through the sealing ring, the water leakage phenomenon is avoided, a power source is provided for the plug through the electric telescopic rod, the testing operation can be more stable, the testing precision is guaranteed, and then the reliability of the testing result is improved; and the structure can be suitable for rubber and plastic pipe bodies with different lengths, and the manual operation space is reduced, so that the test is more convenient.
Owner:ZHUJI SHENTONG RUBBER & PLASTIC PIPE CO LTD
Packaging hose pressure explosion test device
ActiveCN223413091UMaterial strength using tensile/compressive forcesElectric machineMechanical engineering
The utility model discloses a packaging hose pressure explosion test device, and relates to the technical field of packaging hose quality detection. A packaging hose pressure explosion test device comprises a mounting frame, two transversely symmetrical guide plates are fixedly connected to the mounting frame, an electric push rod is fixedly connected to the mounting frame, and the telescopic end of the electric push rod is fixedly connected with an extrusion block. A feeding assembly used for automatically conveying the packaging hose to be tested to a designated position for continuous testing is arranged on the mounting frame, and an anti-splashing assembly used for preventing materials from splashing is arranged on the extrusion block. When the output shaft of the motor rotates by one circle, the pushing plate can be controlled to reciprocate back and forth, the tested packaging hoses are automatically pushed away through the pushing plate, one packaging hose is pushed to the position between the two guide plates, so that continuous testing is facilitated, and when the extrusion block is downwards subjected to a pressure explosion test, the protective cover can cover the packaging hoses, so that the packaging hoses are protected. And the cover of the packaging hose is prevented from flying outwards due to pressure to injure workers accidentally.
Owner:WANZAI JUHONG PACKAGING CO LTD
Method and device for evaluating blasting performance of nuclear fuel cladding
PendingCN121877580ANuclear energy generationMaterial strength using tensile/compressive forcesHydrogen concentrationNuclear reactor
The invention provides a nuclear fuel cladding blasting performance evaluation method and device, and the method comprises the steps: carrying out the hydrogen permeation operation of a plurality of first to-be-tested claddings according to different hydrogen permeation time, and obtaining a plurality of second to-be-tested claddings under different hydrogen concentrations; performing an expansion bursting test on each second to-be-tested cladding to obtain a crevasse elongation rate, a bursting temperature and a bursting stress when each second to-be-tested cladding generates a crevasse under different hydrogen concentrations; the bulging bursting test is used for simulating a water loss accident of a nuclear reactor; determining a mapping relation according to the hydrogen concentration, the crevasse elongation, the blasting temperature and the blasting stress; the mapping relation is the mapping relation between the hydrogen concentration and the blasting temperature, the blasting stress and the crevasse elongation; and according to the mapping relation, determining the performance grade of the first to-be-tested cladding for resisting crevasse generation under the condition that the water loss accident occurs. According to the embodiment of the invention, the safety of fuel cladding blasting performance evaluation can be improved.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +1
Turnover mechanism of hydraulic bursting test device for vehicle hydrogen cylinder
ActiveCN224176277UMaterial strength using tensile/compressive forcesHydraulic cylinderRotational axis
The utility model discloses a turnover mechanism of a vehicle hydrogen cylinder water pressure bursting test device, the turnover mechanism is composed of a support underframe, a support platform, gas cylinder clamping assemblies, gas cylinder horizontal clamping assemblies and a hydraulic cylinder, in the utility model, the support platform is provided with a plurality of gas cylinder clamping assemblies and a plurality of gas cylinder horizontal clamping assemblies, meanwhile, the overall stability of the mechanism is kept through the supporting bottom frame at the bottom, the supporting platform and the supporting bottom frame are connected through the rotating shaft, the hydraulic cylinder is further arranged between the supporting platform and the supporting base, the structural connection of the supporting platform and the supporting base is enhanced through the hydraulic cylinder, and the stability of the mechanism is improved. The bearing capacity of the mechanism is improved, the supporting platform is driven to rotate through the hydraulic cylinder, the whole overturning process is kept stable, and the safety and flexibility of the blasting experiment are further guaranteed.
Owner:SHENYANG ZIWEIHENG TESTING EQUIP CO LTD
Flexible retention assembly for turbomachine rotating part burst test bench
The invention relates to a flexible retention assembly (4) for a test bench (1) for bursting a rotating part of a turbomachine to be tested (9), said test bench (1) comprising a hollow cylindrical wall (10) defining an internal test tank having a first hollow cylindrical volume (V1) extending along a longitudinal axis (L), a drive shaft (2) mounted to rotate about said longitudinal axis (L) and on which said rotating part to be tested (9) is intended to be fixed, said test bench (1) further comprising means for retaining fragments from said rotating part to be tested (9), said means for retaining fragments comprising: a hard retention assembly (3) intended to be housed in said first hollow internal volume (V1) and comprising at least one hard retention element (30) of hollow cylindrical shape defining a second hollow cylindrical internal volume (V2) intended to extend along said longitudinal axis (L);said flexible retention assembly (4), said flexible retention assembly (4) comprising at least one flexible retention element (40, 40') of hollow cylindrical shape extending along a longitudinal axis (X) and defining a third hollow cylindrical internal volume (V3), said at least one flexible retention element (40, 40') comprising at least one layer of composite material (5).;
Owner:SAFRAN AIRCRAFT ENGINES SAS
A dynamic crack high-speed photography system and method for reducing interference in a blast test
The application provides a dynamic crack high-speed photography system and method for reducing interference in a blasting test, and belongs to the technical field of dynamic monitoring of blasting tests. A rock test piece is placed at the center of a reinforced concrete retaining wall, and a confining pressure device is arranged between the outer wall of the rock test piece and the inner wall of the reinforced concrete retaining wall. The upper surface of the rock test piece is covered with an impact-resistant flow guide protective cover. A horn-shaped flow guide pipe is arranged at the top of the impact-resistant flow guide protective cover in communication, the horn-shaped flow guide pipe is connected with a cylinder at the end, the cylinder penetrates through a protective baffle, and the high-speed camera is connected with a data processor through a connecting line. The high-speed photography method combining the flow guide protection structure, the light filtering measure and the double-view imaging can solve the problem that the dynamic crack of brittle materials such as rock and concrete is not clear in the blasting test due to the shielding of flying objects and the interference of strong light.
Owner:CHINA THREE GORGES UNIV
Fire hose blast resistance detection device
ActiveCN224341352UMaterial strength using tensile/compressive forcesWater sourceArchitectural engineering
This utility model provides a fire hose burst resistance testing device, belonging to the field of fire hose testing; it includes: a supporting base plate, a pressure boosting pipe structure installed on the upper wall of the supporting base plate, a pressure measuring pipe structure installed on the upper wall of the supporting base plate, an automatic fixing and tightening structure installed on the inner wall of the pressure boosting pipe structure and the pressure measuring pipe structure, a water source structure installed on the lower wall of the supporting base plate, and a protective structure installed on the upper wall of the supporting base plate; the two ends of the fire hose are fixed by a hydraulic system. The hydraulic fixing can ensure the positive pressure of fixing the two ends of the fire hose, thereby ensuring that the two ends of the fire hose will not fall off during the test. At the same time, it can improve the installation speed of the fire hose, thereby improving the efficiency of the burst test of the fire hose. Moreover, the hydraulic system is inexpensive, which can reduce the overall price of the test equipment and play a positive role in the subsequent sales and promotion of the equipment.
Owner:LIAONING FIRE SAFETY ENG CO LTD
Embossed toilet tissue
Embossed fibrous structures that exhibit a Dry Burst of greater than 270 g as measured according to the Dry Burst Test Method and more particularly to embossed fibrous structures that exhibit a Dry Burst of greater than 270 g as measured according to the Dry Burst Test Method and a Total Dry Tensile of less than 2375 g / 76.2 mm and / or a Geometric Mean Total Dry Tensile of less than 1130 g / 76.2 mm as measured according to the Tensile Strength Test Method are provided.
Owner:PROCTER & GAMBLE CO
Explosive impact pressure testing device
The application provides an explosive impact pressure testing device, and relates to the technical field of explosives and blasting engineering. The testing device simulates the hole wall where the explosive is located in the actual blasting through a testing pipe, and collects the test data of the detonation products generated after the explosion of the explosive, such as time, instantaneous impact pressure of the detonation products on the inner wall surface of the testing pipe and the like, by cooperating with an information collector. Meanwhile, the detonation products are reduced in energy carried when being discharged from the outlet end of the pressure relief pipe in the form of reverse folding and mutual collision by means of the main pressure relief channel and the auxiliary pressure relief channel, so that the testing device has good repeatability and low external impact power, reduces the high standard dependence of the testing device on the testing site, and avoids the problems of poor test repeatability, high cost, inconvenient operation and difficulty in obtaining stable and reliable data caused by the influence of factors such as geological conditions and charging parameters during the on-site blasting test.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
A stepped cigarette paper burst test device
Owner:CHONGQING CHINA TOBACCO IND CO LTD