1264 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 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 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 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 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 relates to an intake hose, throttle valve assembly and vehicle, intake hose is used for connecting with throttle valve, intake hose includes hose body and support layer, the support layer is provided in the hose wall of hose body, the support layer has a plurality of circles, and the support layer is provided with the support layer. The multiple circles of supporting layers are arranged in a stacked and sleeved mode in the radial direction of the hose body. The air inlet hose not only can meet the use requirement of negative pressure resistance, but also can reduce noise.

The utility model discloses a pressure resistance detection mechanism for a pressure pipeline of special equipment. The pressure resistance detection mechanism comprises a supporting assembly, an adjusting module and a clamping module, the clamping module comprises a lead screw groove, two sliding blocks are arranged in the lead screw groove, and the two ends of the inner side of the lead screw groove are movably connected with one ends of two-way lead screws respectively. The two sealing caps are moved to the height flush with the pressure pipeline through the adjusting module, the two sealing caps are close to each other through the clamping module, so that the pressure pipeline is clamped by the two sealing caps, the pressure pipeline and the two sealing caps form a relatively closed space, an external air pump is opened, and the pressure pipeline is sealed. Peripheral air enters the valve and the pressure pipeline through the air pump, the numerical value of the barometer is observed at the same time, when the barometer reaches a certain numerical value, the external air pump is closed, waiting is conducted for a period of time, the numerical value of the barometer is observed again, the numerical value at the moment is compared with the numerical value of the last time, and the anti-pressure capacity of the pressure pipeline is obtained.

The invention discloses a steel curtain belt reinforced wear-resistant composite pipeline and a defect detection device, and relates to the technical field of defect detection, the steel curtain belt reinforced wear-resistant composite pipeline comprises a pipe body, the section structure of the pipe body comprises a lining transmission layer, a reinforcing layer and an outer protection layer which are sequentially arranged from inside to outside, and the reinforcing layer, the lining transmission layer and the outer protection layer are bonded and compounded into a whole; the reinforcing layer is made of a prepreg tape type steel curtain tape in a bidirectional winding mode, the reinforcing layer material steel curtain tape is a tape with extremely high tensile strength, and after the reinforcing layer material steel curtain tape is made into the pipeline, the pressure resistance of the pipeline is higher than that of pipelines made of other types of reinforcing materials. According to the pipeline made of the steel curtain belt serving as the reinforcing layer material, the internal pressure resistance of the pipeline is guaranteed, and meanwhile the external impact resistance is very high.

The invention belongs to the related technical field of pressure tests, and particularly discloses a gas inlet pipeline test device for a gas generator, which comprises a first base and a second base, a round frame is fixedly mounted on one side of the upper end surface of the first base, an annular pipe is embedded in the round frame, and a connecting rod is mounted at one end in the annular pipe through an arranged telescopic mechanism. The outer side of the connecting rod is externally connected with a ring rod through an inner chuck fixedly connected in a sleeving mode, a sealing rotating ring is arranged on the outer wall of one side of the round frame, a test air inlet pipe movably penetrates through the sealing rotating ring in a penetrating mode, and a particle feeding simulation mechanism is arranged at the end, away from the sealing rotating ring, of the test air inlet pipe. By simulating multi-field coupling environments such as pressure fluctuation, particle scouring and mechanical vibration under real working conditions, the problem that data deviation is large due to the fact that complex working conditions cannot be reproduced in a traditional test is solved, and precise detection and full-life-cycle evaluation of the performance such as wear resistance, pressure resistance and blockage resistance of the pipeline are achieved.

The invention relates to the technical field of pipeline water pressure testing, in particular to a pipeline water pressure testing device. The device aims at solving the technical problems of monitoring and controlling pressure, temperature and flow in the pipeline water pressure testing process, coping with water flow impact, guaranteeing testing safety and stability and the like. A pressure sensor I, a temperature sensor and a flow sensor I are arranged to collect data, and a data collection and control system receives the data and generates a control instruction to control a pressure pump, a regulating valve and a pressure release valve to work in combination with parameters input by an operator. Meanwhile, a plurality of energy accumulators, buffer units and other components are arranged to stabilize pressure and buffer water flow impact. The device is mainly used for water pressure testing of various pipeline systems, and ensures the pressure resistance and safety of pipelines.

The invention discloses an underground artificial tunnel energy storage cavern flexible sealing layer which is formed by lap joint of a plurality of flexible sealing units, and each flexible sealing unit comprises a high-elasticity rubber body layer, an HDPE stereoscopic film and a high-strength filament net; the high-strength filament net is attached to the inner side face of the HDPE three-dimensional film, then the high-elasticity rubber body is sprayed to achieve composite connection, the ends of the anchoring parts are arranged in a protruding mode and poured together with concrete, and tight connection and attachment of the HDPE three-dimensional film, the high-strength filament net and the high-elasticity rubber body and the reinforced concrete lining are achieved; the sealing performance and the pressure resistance of the energy storage cavern of the artificial tunnel are improved; the flexible sealing layer forms a full-wrapping complete HDPE three-dimensional anti-leakage system, potential leakage of an internal energy storage medium passing through the energy storage cavern structure is comprehensively blocked, local defects such as the leakage risk of cracks caused by deformation of the energy storage cavern are greatly reduced, the sealing performance of the structure can be guaranteed to the maximum extent, the service life of the energy storage cavern is greatly prolonged, and the energy storage cavern is suitable for large-scale popularization and application. And the energy storage efficiency of the cavern is improved.

The utility model relates to a beam column reinforcing steel bar connecting structure of a concrete prefabricated assembly type building, which comprises a prefabricated column die cavity, a prefabricated beam die cavity and a prefabricated floor die cavity, and a prefabricated column reinforcing steel bar keel and a prefabricated beam reinforcing steel bar keel are pre-mounted in the prefabricated column die cavity and the prefabricated beam die cavity respectively. The prefabricated column steel bar keel comprises at least two column outer side steel bars and at least two column inner side steel bars, the prefabricated beam steel bar keel comprises at least two beam outer side surface bars and at least two beam inner side steel bars, and the column outer side steel bars and the beam outer side surface steel bars are manufactured by bending the same first reinforcing steel bar to form an upper section and a lower section which are perpendicular to each other. The lower section is pre-installed in a prefabricated column steel bar keel, and the upper section is pre-installed in a prefabricated beam steel bar keel in a prefabricated beam mold cavity. The connecting strength of the prefabricated column and the prefabricated beam is improved, and the pressure resistance, the shock resistance, the supporting stability and the house safety are improved.

The utility model relates to a detection device, and provides a cable immersion pressure resistance detection device, which comprises a shell, a control platform, a cover plate, a water tank, a water injection pipe and the like, a control platform is arranged on the front side of the shell and composed of a control module, an instrument, a screen and the like, a cover plate is rotatably arranged on the upper portion of the shell, a water tank is arranged on the lower portion in the shell, a water injection pipe is arranged on the lower portion of the water tank, and the other end of the water injection pipe penetrates out of the shell. According to the utility model, a program is preset in the control module, when cables of different models are tested, test conditions are automatically matched according to set data, the data can be recorded and fed back in real time in a test stage, meanwhile, a closed test instrument is arranged, the test cables are separated from an operator in the test process, and the test efficiency is improved. And potential safety hazards during working are reduced.