1882 results about "Pressure resistance" patented technology

The invention discloses a water pressure testing device for steel pipe compression resistance detection and a testing method thereof.The device comprises a supporting assembly, a moving assembly and a fixed sealing assembly, the supporting assembly comprises a base and a pair of supporting frames fixedly connected with the top of the base, and the moving assembly is arranged above the base; the moving assembly is arranged on the base and fixedly connected with the base, and the fixed sealing assembly is connected with the moving assembly, used for fixing the steel pipe and capable of sealing the two ends of the steel pipe. The driving motor drives the positive and negative screw rod to rotate, so that the pair of moving plates move in opposite directions, the abutting blocks can abut against the inner wall of the steel pipe in the opposite moving process of the moving plates, the steel pipe can be stabilized through the abutting effect of the abutting blocks, the displacement phenomenon of the steel pipe during water pressure testing is avoided, and when the moving plates move, the steel pipe is prevented from moving. The steel pipe can be subjected to double-layer sealing, the sealing effect is good, and the accuracy of a test result can be improved.

The invention discloses a mixed tower steel cable system parametric modeling method and system based on multi-body dynamics, and relates to the technical field of wind power generation. The method comprises the following steps: creating parameter points at the center of each end face of a concrete section according to geometric parameters, and establishing a mixed tower three-dimensional model; correcting the mass of each section of the mixing tower according to the material density of the mixing tower; simulating the characteristics of pressure resistance and non-tension resistance of the mixed tower, and establishing a contact and bonding relationship between concrete sections of the three-dimensional model of the mixed tower; obtaining design parameters of a steel cable in the mixed tower, constructing a steel cable parameterized model, and combining the steel cable parameterized model with the mixed tower three-dimensional model to obtain a mixed tower steel cable system parameterized model; and performing dynamic simulation on the operation condition of the fan to obtain a time domain response result of the parameterized model of the mixed tower steel cable system. According to the invention, the response characteristic analysis of the mixing tower under multiple working conditions and multiple structures is realized.

The invention relates to the technical field of self-priming pump detection, and discloses a self-priming pump body and a pressure resistance testing machine thereof.The self-priming pump body comprises a base, a driving motor is fixed to the base, a shell is fixed to the base, a driving cover is fixed to one side of the shell, a transmission rod is rotationally arranged in the driving cover, and the output end of the driving motor is connected with an impeller in the shell through the transmission rod; a water inlet is fixed to one side of the shell, a water outlet is fixed to the shell, the pressure resistance testing machine comprises a machine table, a material conveying table is fixed to the machine table, two testing tables are fixed to one side of the material conveying table, material conveying rollers are rotationally arranged on the material conveying table in an array mode, two discharging ports are formed in one side of the material conveying table, a first air cylinder is fixed to one end of each testing table, and a circular plate is fixedly arranged at the output end of the first air cylinder. The first test piece is used for testing the interior of the self-priming pump, impact of sundries in conveyed liquid on the interior of the pump body of the self-priming pump can be simulated, the second test piece is used for detecting the exterior of the self-priming pump, the compressive strength of the pump body of the self-priming pump is tested, and the detection precision is high.

A quick coupler structure includes a male and a female coupler. The male coupler internally receives a fixed valve core surrounded by a spring and a connecting tube for connecting to a coupling platform at an upper part of the female coupler. The connecting tube is externally provided with sealing members to enhance airtight connection with the male coupler. The coupling platform defines a central thru-hole with a movable valve received therein to normally close it. When the fixed valve core is caused to expose from the connecting tube, it pushes the movable valve out of the central thru-hole to open the latter, allowing the male and the female coupler to communicate with each other. The sealing member won't be turned or loosened by a shearing force when the male and the female coupler are assembled or disassembled, giving the quick coupler structure upgraded air-tightness, pressure resistance and coupling reliability.

The invention relates to the technical field of hose performance testing, in particular to a method and system for testing performance parameters of a hose for transporting petroleum, and the method comprises the following steps: collecting corrosion characteristic data through a flexible electrochemical sensing film; utilizing the dynamic physical field model and the crack detection data to simulate the crack propagation path and rate; identifying leakage points through particle motion analysis and evaluating leakage characteristics; combining a multi-mode collaborative evaluation model, integrating corrosion, crack, fluid abnormity and leakage data, and comprehensively analyzing the pressure resistance, sealing performance and corrosion resistance of the hose; and dynamically calculating the residual service life of the hose based on a residual service life prediction algorithm. According to the invention, the problems of insufficient crack detection sensitivity, low corrosion modeling precision and incomplete comprehensive performance evaluation in the prior art are effectively solved, the precision and reliability of the performance parameter test of the petroleum transportation and transfer hose are remarkably improved, and a scientific basis is provided for the operation safety of the hose.

The invention discloses an impact resistance testing device and method for carton production, and relates to the technical field of impact testing devices.The impact resistance testing device comprises a baffle, four supporting frames and sliding rods are arranged at the upper end of the baffle, a top cover is arranged at the upper ends of the four supporting frames, and a transmission chain is arranged between the top cover and the baffle; a carton is arranged in the middle of the upper end of the baffle, a pressure applying mechanism for carrying out impact test on the carton is arranged among the four transmission chains, and an impact mechanism for changing the impact area to carry out impact resistance test on the carton is arranged in the pressure applying mechanism. According to the invention, a plurality of impact testing methods are provided through cooperation of the pressure applying mechanism and the impact mechanism to simulate various pressures and impacts possibly encountered in the actual transportation and storage process of the carton, so that the pressure resistance and the impact resistance of the carton can be evaluated more accurately; and the transmission chain controls the pressing force of the pressing mechanism, so that the bearing capacity of the carton can be quantified, and the deformation degree and the limit value of the carton under different pressures are determined.

The invention discloses a pressure pipeline pressure resistance detection machine capable of performing contrast detection, and belongs to the technical field of pressure pipeline detection, the pressure pipeline pressure resistance detection machine comprises a support frame, two fixing plates are symmetrically arranged on the upper end face of the support frame, and two electric cylinders are symmetrically mounted on the side of a pressure pipeline; the angle adjusting mechanism is arranged between the electric air cylinder and the fixing plate; the pushing assembly is arranged between the electric air cylinder and the pressure pipeline; and the gas transmission assembly is arranged on the side of the output shaft of the electric cylinder. When the pressure pipeline is detected, the pressure-resistant performance detection machine capable of performing comparative detection for the pressure pipeline can automatically change the detection angle and can automatically adjust the position of the pressure pipeline without frequently adjusting the pipeline or replacing different detection machines, so that the detection comprehensiveness is improved, and the detection efficiency is improved. And meanwhile, when the pressure resistance detection is carried out, the detection diversity can be improved by changing the test temperature.

The invention relates to a comprehensive performance verification method for a wear-resistant layer of a turbine blade, and belongs to the technical field of turbine blades, the comprehensive performance verification method comprises a melting performance test, a pressure-resistant performance test, a wear-resistant performance test, a high-temperature hardness test and a tension shear test, and the melting performance test is performed on a welding rod made of a first material; the first wear-resistant layer made of the first material is subjected to a pressure resistance test, the second wear-resistant layer and the third wear-resistant layer made of the first material are subjected to a wear resistance test, the fourth wear-resistant layer made of the first material is subjected to a high-temperature hardness test, and the blade crown wear-resistant layer made of the first material is subjected to a tension shear test. The device has the beneficial effects that a fusion performance test, a pressure resistance test, a wear resistance test, a high-temperature hardness test and a tension shear test are carried out on the welding rod made of the first material, so that the comprehensive performance test on the welding rod made of the first material is realized, and whether the welding rod made of the first material can be used for processing a blade or not is judged; and the machining quality and safety of the blade are ensured.

The invention relates to the field of rubber part performance detection, in particular to a rubber part performance detection device which comprises a detection table and a portal frame fixedly installed at the top of the detection table, a window is formed in the top of the detection table, and two movable table tops for closing the window are installed at the top of the detection table in a front-back sliding mode. The bottom of the horizontal section of the portal frame is provided with a voltage-withstanding testing mechanism and a fixing mechanism in a left-right sliding manner. Through linkage cooperation of the pressure resistance testing mechanism and the wear resistance testing mechanism, after the pressure resistance testing mechanism performs a pressure resistance test on the rubber part, the shear fork type elevator pushes the wear resistance testing mechanism to move upwards to the bottom of the rubber part to perform a wear resistance test on the rubber part; the pressure resistance testing mechanism always exerts pressure on different parts of the rubber part, the wear resistance condition of the rubber part when different parts are subjected to different pressures before and after the rubber part is used is simulated, and the detection effect is further improved.

The invention discloses a preparation method of a composite pipe for vibration and noise reduction, and relates to the technical field of metal material preparation, in order to solve the problems that an existing prepared composite pipe is poor in pressure resistance and vibration reduction and sound absorption capacities, the preparation method comprises the steps that an inner layer metal pipe, an outer layer metal pipe and foaming powder are integrally extruded and formed, and a pipe blank composite pipe blank is obtained; the pipe blank composite pipe blank is heated, rolling forming is conducted on the pipe blank composite pipe blank, the temperature of a contact interface between the structures of the pipe blank composite pipe blank is increased to a preset temperature, a metallurgical bonding target bonding interface is formed on the contact interface, and a target composite pipe blank is obtained; and the target composite pipe blank is placed in a heating furnace, the middle layer of the target composite pipe blank is foamed to form a foam metal layer, and the foam metal sandwich composite pipe is obtained. The preparation method provided by the invention is used for improving the compressive strength and the vibration reduction and sound absorption performance of the foam metal sandwich composite pipe.

The invention discloses a drilling parameter optimization method and device and a storage medium, and relates to the technical field of parameter optimization, and the key points of the technical scheme are that the method comprises the following steps: establishing a drilling specific energy difference model and a mechanical drilling speed model; the drilling specific energy difference value is the difference value between the energy required for removing unit volume of rock and the pressure resistance degree of the rock lateral line; constraint conditions of the drilling parameters are determined, and a multi-objective optimization model is constructed according to the constraint conditions, the drilling specific energy difference model and the mechanical drilling speed model; and according to the multi-objective optimization model, well drilling parameters are optimized in real time, the optimal well drilling parameters of well drilling operation are determined, and the well drilling parameters of the well drilling operation are adjusted according to the optimal well drilling parameters. Through the optimization method, the multi-target optimization model can be formed by combining the mechanical drilling speed model and the drilling specific energy difference model, so that drilling parameters such as drilling pressure and rotating speed are realized under constraint conditions, optimization of the drilling parameters is realized, the drilling efficiency is improved, and the drilling cost is reduced.

The invention discloses a pipeline connection flange with a pressure-resistant structure, which is characterized in that a driving mechanism in a fixed cylinder is matched with a lacing wire structure on the peripheral side through a plurality of reinforcing pieces to form a firm supporting system, so that stress can be effectively dispersed when a flange plate bears external pressure, and the pressure resistance of the flange plate is improved. And the damage risk caused by local stress concentration is prevented. Under the action of pressure, the reinforcing piece can uniformly distribute external force to the periphery of the fixing cylinder, so that excessive concentration at a certain point is avoided, and the possibility of material fatigue and yield is reduced. And meanwhile, the overall supporting capacity is further enhanced through the tie bar structure, a force transmission network is constructed, connection between the assemblies is more stable, and the overall strength is improved. According to the structural optimization, the flange plate can still keep good performance under the high-load working condition through a reinforced support and stress dispersion mechanism.

The invention discloses a fluid pressure resistance testing device for seamless steel pipe machining, and relates to the technical field of steel pipe pressure resistance testing. Comprising a test pressurization piece, two pipe end positioning pieces are installed on the test pressurization piece, and clamping driving pieces are installed on the two pipe end positioning pieces respectively; the two pipe end positioning pieces are respectively used for switching the clamping positions of the end parts of the seamless steel pipe; the four clamping driving pieces are each provided with a magnetic safety piece. The four magnetic safety pieces are used for being connected with the two pipe end positioning pieces in an inserted mode respectively. Movable pressure measuring pieces are mounted on the two pipe end positioning pieces; the structure can be used for quickly clamping the end of the steel pipe for positioning, stability during pressure test can be ensured, the structure is stable in positioning, and comprehensiveness of pressure resistance test of the end of the steel pipe is improved; the fluid pressure resistance testing device aims to solve the problems that an existing fluid pressure resistance testing device for seamless steel pipe machining is usually provided with a quick-release connector, the connector can surround and extrude the end of a pipe fitting, and it is inconvenient for an anti-explosion pipe to switch the clamping position of the steel pipe.

The invention discloses an insulator protection device, which relates to the technical field of insulators. Dirt such as bird droppings causes the insulator's withstand voltage strength to decrease, resulting in flashover damage. The invention includes an insulator mechanism, an insulator string protection mechanism and an adjustment mechanism, wherein the insulator mechanism includes a support column and an insulator; the insulator string protection mechanism includes a card plate, a connecting rod is fixedly installed between two card plates, and a wind collecting plate clamped between the two card plates, a connecting plate is sleeved on the outside of the connecting rod, and a scraper one and a scraper two matching the insulator are fixed at one end of the connecting plate; the buffer assembly includes a sleeve; the adjustment mechanism includes a transmission plate slidably installed on the wind collecting plate, a guide rail matching the connecting plate is provided on the transmission plate, the transmission plate slides to adjust the distance between a plurality of connecting plates and simultaneously realizes the equidistant adjustment between a plurality of insulators, the wind collecting plate is rotated by wind force, so that the two scrapers rotate around the insulator, thereby limiting the insulator and cleaning its surface at the same time, thereby realizing the protection of the insulator.

The utility model discloses a spacer rod convenient to install, which comprises a main fixing frame and a reinforcing assembly, the main fixing frame is an integrally formed stainless steel structure, the reinforcing assembly is arranged on the surface of the main fixing frame, and the reinforcing assembly comprises an arc-shaped fixing piece, an auxiliary fixing frame, a supporting rod, a fixing disc, a reinforcing ring and a stainless steel woven mesh. The arc-shaped fixing piece is arranged on the inner side surface of the main fixing frame, the auxiliary fixing frame is installed at the rear end of the outer side surface of the arc-shaped fixing piece, the auxiliary fixing frame and the main fixing frame are consistent in size and shape, a supporting rod is arranged on the inner side surface of the arc-shaped fixing piece, and a fixing disc is installed at the inner end of the supporting rod; and reinforcing rings are arranged on the surfaces of the supporting rods. According to the spacer rod convenient to install, the spacer rod can be conveniently and rapidly installed through the installation assembly, installation is stable and not prone to loosening, the spacer rod has higher supporting performance through the reinforcing assembly, the pressure resistance is improved, and the spacer rod is not prone to being damaged due to compression.

The present invention discloses a testing device for a rubber water stop joint, which relates to the technical field of rubber water stop joints; in order to improve the detection efficiency; specifically, it includes a base, a supporting part and a testing part for performing a pressure test on the main body of the water stop joint. The testing part includes: a bracket: which is fixed on the outer wall of the top of the base, and a piston cylinder is fixed on the outer wall of the top of the bracket, and a filling pipe and an adjusting pipe are respectively welded on the circumferential outer wall of the piston cylinder; a piston plate: which is movably connected to the inner wall of the circumferential wall of the piston cylinder. In the present invention, by providing a driving plate, the bending seat can be driven to rotate, so that the top of the main body of the water stop joint can be twisted by the rotation of the bending seat, so that the anti-twisting performance of the bending seat can be tested. At the same time, by using the first kidney-shaped hole, the circumferential movement of the driving plate can be converted into the linear movement of the ejector rod, and the ejector rod can be used to drive the piston plate to move downward, so as to test the pressure resistance performance of the main body of the water stop joint.

The invention discloses a petroleum pipeline compression resistance detection experiment mechanism, and relates to the technical field of compression resistance detection of novel pipeline materials, the petroleum pipeline compression resistance detection experiment mechanism comprises a workbench, the upper surface of the workbench is fixedly connected with a hydraulic rod, and the output end of the hydraulic rod is fixedly connected with a pressure detection plate; and a working rod is arranged above the side of the pressure detection plate and above the workbench in a nested connection manner. According to the petroleum pipeline pressure resistance detection experiment mechanism, a first air bag can be deformed through movement of an extrusion plate, the inner side and the outer side of a pipeline can be sealed through an expanded fixed air bag, the phenomenon of gas leakage is avoided when internal pressure detection is conducted on the pipeline subsequently, an air compressor supplies air to the interior of a rotating rod through an air supply hose, and the pressure resistance of the pipeline is improved. Therefore, gas is conveyed into the pipeline from the first nozzle and the auxiliary nozzle, gas supply treatment is conducted on different directions in the pipeline, and real-time quantitative evaluation of the internal pressure bearing capacity of the pipeline can be achieved by observing the deformation condition of the pipeline and the gas supply numerical value of the air compressor.

The invention provides a marine underwater oil cylinder, and belongs to the technical field of marine engineering underwater key parts. The oil cylinder comprises a cylinder bottom, a cylinder body and a cylinder cover which are sequentially arranged, and the cylinder cover is connected with the cylinder body in a sealed mode through a first sealing assembly. A piston and a piston rod connected to the piston are slidably arranged in the cylinder body, the piston rod is in sealing fit with the cylinder cover through a second sealing assembly, and the piston is in sealing fit with the inner wall of the cylinder body through a third sealing assembly. According to the oil cylinder used under the sea, the sealing performance and the anti-corrosion performance of the oil cylinder are improved, the pressure-resistant grade and the radial bearing capacity of the oil cylinder are improved, the low-speed stable motion characteristic of the oil cylinder is improved, and the service life of the oil cylinder is prolonged.

The invention relates to the field of pressure resistance detection of a heating pipeline connection leakage-proof structure, in particular to pressure resistance performance testing equipment for a heating pipeline connection leakage-proof structure. The invention provides a heating pipeline connection leakage-proof structure pressure-resistant performance test device which comprises a box body, a valve is installed on the side wall of the box body, a placing frame is fixedly connected to the top of the box body, a water pump is installed on the box body, a water inlet pipe of the water pump extends into the box body, and a water outlet pipe of the water pump penetrates out of the placing frame. The side, close to the water pump, of the containing frame is rotationally connected with symmetrically-distributed rotating shafts. Synchronous action is achieved through the transmission assembly and the self-locking gear set, it is ensured that a pipeline is firmly fixed in a high-pressure test, and leakage or damage caused by infirm fixing is avoided; the position of the pipeline is accurately adjusted, accurate butt joint of water injection nozzles is guaranteed, the problem of poor centering performance of traditional equipment is solved, and personal errors are reduced; the automatic design significantly shortens the preparation time, improves the test efficiency, reduces the labor intensity and maintenance cost, and improves the detection precision and reliability.

The invention discloses a gas cylinder pressure resistance detection device and detection method, and relates to the technical field of gas cylinder detection. The gas cylinder pressure resistance detection device comprises a water pipe, the water pipe is used for being inserted into a gas cylinder and providing water needed by pressure resistance detection for the gas cylinder, at least two hard pipes are arranged on the periphery of the area, close to the lower end, of the water pipe, the upper ends of the hard pipes are connected with the water pipe through hinge joints, and the hard pipes are communicated with the water pipe through flexible pipes; the gas pipe is sleeved on the periphery of the water pipe, and the lower end of the gas pipe is inserted into the gas cylinder and is positioned in a bottleneck area of the gas cylinder; according to the gas cylinder pressure resistance detection device and detection method, the branch pipe, the stress pipe and the thrust mechanism are arranged, so that the branch pipe can be opened after entering the gas cylinder, and the branch pipe moves downwards in a vertically downward posture to be flush with the bottom surface of the gas cylinder after being opened to the maximum angle, and therefore, it is ensured that water can be thoroughly drained in a drainage stage, and the pressure resistance of the gas cylinder is improved. And water residues in the gas cylinder are greatly reduced.

The invention discloses a building main body structure detection device, and relates to the technical field of detection, the building main body structure detection device comprises a mobile vehicle and a detection mechanism, the detection mechanism is mounted on the mobile vehicle and comprises a linear movement driving part, a rotation driving mechanism, a drilling cylinder, a baffle plate and a pressure sensor, and the rotation driving mechanism is mounted on the linear movement driving part; the pressure sensor is installed at the output end of the rotation driving mechanism, the drilling barrel is installed at the detection end of the pressure sensor, the axis direction of the drilling barrel is parallel to the moving direction of the linear movement driving part, and the baffle is installed in the drilling barrel in an attached and sealed mode. And the position can be fixed or synchronously move along with the moving direction of the linear moving driving part. The drill cylinder and the pressure sensor are matched, the counter force of the drill cylinder is detected in a drilling mode, the compressive strength of the building body can be accurately obtained through calculation, the compressive strength of different material positions can be detected according to different materials in the building body, and detection data are subjective and accurate.

The invention provides a double-layer combined air bag material for foundation pit dewatering well plugging and an intelligent preparation process, and belongs to the technical field of air bag materials for foundation pit plugging. Comprising an outer-layer air bag, an inner-layer air bag, an inflation system and a control system, the outer-layer air bag and the inner-layer air bag form a honeycomb type distribution structure, the outer-layer air bag wraps the inner-layer air bag, and the contact face of the outer-layer air bag and the inner-layer air bag is of a curved surface attaching structure; the surface of the inner-layer air bag is coated with a waterproof sealing layer, the inflation system and the control system are arranged on one side of the outer-layer air bag, and the control system is electrically connected with the inflation system. By means of the double-layer combined air bag structure and the inflation control system, the problems that a traditional single-layer air bag is insufficient in pressure resistance, prone to deformation and leakage, poor in environmental adaptability and lack of real-time monitoring and adjusting in foundation pit dewatering well plugging are solved, and the stable, lasting and intelligent plugging effect still can be kept in the complex environment of the foundation pit dewatering well.

The invention discloses a novel motor shell material compression resistance test bench, which comprises a base, a bottom plate is fixed on the top of the base, and a radial shrinkage extrusion test mechanism is arranged on the bottom plate and is used for testing the compression resistance of the side surface of the motor shell material; the radial shrinkage and extrusion testing mechanism comprises a disc fixed to the top of the bottom plate. The invention relates to the technical field of material testing equipment. According to the novel compression resistance test bench for the motor shell material, through the arrangement of the radial shrinkage extrusion test mechanism, the motor shell material is radially shrunk and extruded by utilizing four extrusion arc plates, so that the multi-directional pressure test on the side surface of the motor shell material is realized; compared with a traditional pressure testing device which can only conduct pressure testing on the motor shell material in the vertical direction, the testing device does not need to frequently adjust the position of the motor shell material, the testing efficiency is greatly improved, and errors generated by manual operation are also avoided.

The invention relates to the technical field of steel pipe production, and particularly discloses a production process of a seamless steel pipe special for a high-temperature-resistant and high-pressure-resistant boiler. Under preset process parameters, a clamping mechanism is used for driving a steel billet to rotate and axially feed in, and the steel billet is symmetrically and synchronously beaten through a plurality of hammer heads, so that the steel billet is formed into a round billet; heating and perforating the round billet to obtain a pierced billet; and the pierced billet is sequentially fed into a hammerhead machine and a cold-drawing machine to be subjected to heading and drawing so as to conduct sizing on the steel pipe. The steel pipe is produced by combining a hammering forging mode with a perforating mode, and a plurality of synchronous symmetrical hammers are used for hammering, so that dynamic recrystallization and grain refinement are realized, the compactness of a steel pipe material is improved, and the high-temperature resistance and the pressure resistance of the steel pipe are improved; the circular-arc-shaped hammer head is adopted to be matched with the curvature of the steel billet, stress concentration is avoided, one-time circle forging, punching and sizing of the steel billet are achieved, the advantage of procedure integration is achieved, and the production efficiency is improved.

The invention relates to the technical field of high-voltage busbars, and discloses a high-voltage busbar which comprises a core wire bar, a composite layer, a pressure-resistant layer and a wear-resistant layer are sequentially arranged on the outer side of the core wire bar, the composite layer is arranged on the outer side of the core wire bar in a plastic coating mode and used for improving insulation, high temperature resistance and flame retardance of the busbar, the pressure-resistant layer is fixed between the composite layer and the wear-resistant layer, and the wear-resistant layer is fixed between the composite layer and the wear-resistant layer. The core wire bar is used for improving the compression strength of the busbar and is one of a copper bar and an aluminum bar; the composite layer is made of a mixed material of ceramic silica gel and mica powder; the pressure-resistant layer is made of a PI material or a mica paper material; and the wear-resistant layer is made of a TPU material. According to the high-voltage busbar, the outer side of the core wire bar is coated with the composite layer, the pressure-resistant layer and the wear-resistant layer, so that the requirements of high voltage, insulation, pressure resistance, wear resistance and the like of the busbar are met, it is guaranteed that the busbar is safely used on a high-voltage line on an automobile, the use process is stable, the service life is long, the production process is easy to operate, the material cost and the process cost are low, and the production cost is low. And the actual busbar batch production requirement is met.

The invention relates to the technical field of detection equipment, in particular to a pressure resistance detection device for cement prefabricated slab production, which comprises a base, a lifting mechanism is arranged at the top of the base, a mounting cylinder is connected to the lifting mechanism, a connecting rod is slidably arranged at the lower part in the mounting cylinder, a universal ball I is connected to the bottom end of the connecting rod, and a pressure applying head is connected to the universal ball I. The driving assembly can drive the annular pressing blocks from inside to outside to move downwards in sequence, so that the bottom faces of the annular pressing blocks from inside to outside are flush with the bottom face of the annular pressing block at the innermost end, and the pressure applying area is increased; meanwhile, the annular pressing blocks from outside to inside can be driven to move upwards in sequence, so that the pressure application area is reduced, the effect of flexibly adjusting the pressure application area is achieved, the complex stress condition possibly occurring in engineering is simulated, and the detection accuracy is improved.

The invention relates to the technical field of pipeline quality detection, and discloses building pipeline quality detection equipment, which comprises a base, and further comprises a fixed disc fixedly mounted at the top of the base; the rotating disc is rotationally mounted in the center of the top of the fixed disc; the L-shaped frame is fixedly mounted at the top of the base; the detection assembly is mounted at the top of the rotary table and used for detecting the building pipeline; the sealing assembly is arranged on the L-shaped frame and the base, and the sealing assembly is used for sealing the detection assembly. According to the invention, pressure resistance and crack damage detection can be synchronously carried out on the building pipeline, the situations of inaccurate detection and troublesome detection are avoided, in addition, the building pipeline with air leakage can be marked by a brush, and the disassembled pipeline with unqualified pressure resistance can directly fall onto the fixed disc, so that the detection result of the building pipeline is clear and visual, and the detection efficiency is improved. And the use effect of the equipment is improved.

The utility model belongs to the technical field of building reinforced concrete detection devices, and particularly relates to a building reinforced concrete detection device which comprises a bottom plate, a detection device is mounted on the bottom plate; a hydraulic cylinder is mounted in the center of the top of the top plate; the bottom end of the hydraulic rod is fixedly connected with a pressing plate; clamping grooves are formed in the two sides of the top of the pressing plate; telescopic rods are mounted at the two ends of the bottom of the clamping rod; limiting rods are installed on the opposite faces of the fixing blocks. A graduated scale is fixedly connected to the top end face of the fixing block. A cleaning device is mounted on the bottom plate; the end part of an output shaft of the small motor is connected with the screw rod; air blowing nozzles are obliquely mounted on the two sides of the bottom of the actuating rod; a fan is mounted at one end of the top of the actuating rod; through the combined action of the detection device and the cleaning device, it is guaranteed that pressure resistance detection and protection layer thickness detection work can be conducted at the same time, the detection work efficiency is improved, and the consumed time of early-stage preparation work is shortened.

The invention aims to provide a combustion chamber casing pressure bearing capacity test method, which comprises the following steps of: obtaining casing pressure resistance and overpressure load of a conformity verification test, obtaining a temperature correction coefficient, obtaining a minimum material performance correction coefficient, and obtaining a most unfavorable geometric dimension correction coefficient, and calculating a final test pressure load according to the product of the case pressure-resistant and overpressure pressure load, the temperature correction coefficient, the minimum material performance correction coefficient and the most unfavorable geometric dimension correction coefficient. Through the test method, the airworthiness conformity of the combustion chamber casing can be verified.