76 results about "Hydraulic test" patented technology

The invention discloses a system and method for testing flow, displacement and hydraulic power of a main valve element. The system comprises two displacement sensors, a tested balance valve and a hydraulic testing assembly. A main valve core and a pilot valve core of the tested balance valve are coaxially and oppositely arranged; the two displacement sensors are coaxially fixed with the main valve core and the control piston respectively; the hydraulic test assembly detects the pressure of an oil return port A, a load oil port B, a feedback spring cavity pressure measuring port Pc and a pilot oil inlet X through pressure sensors; the load pressure, the pilot pressure and the oil return back pressure are controlled through a main load oil way, a pilot control oil way and an oil return back pressure oil way respectively, and meanwhile the flow of the oil return is measured through a flow meter. According to the invention, the flow, displacement and hydraulic force of the main valve core under different working conditions can be synchronously and dynamically measured.

The invention belongs to the technical field of hydraulic test and intelligent control, and particularly discloses a hydraulic component test system integrating data acquisition and automatic data analysis functions, which comprises a physical hardware test platform, a test control software platform and a digital twinborn model of a tested component, and realizes real-time interaction through an OPC UA protocol. Model parameters are corrected on line by means of measured data, and steady state, transient state and disturbance working condition tests are automatically executed based on a working condition library; and dynamically optimizing a test sequence in a test process, skipping a redundant working condition or encrypting a critical region, and synchronously generating a structured performance report. The accuracy and consistency of test results are improved, working condition simulation signals are automatically generated, performance data are collected in real time, a comprehensive performance report is generated, manual operation is reduced, the test process optimization unit can skip redundant working conditions and refine failure boundary positioning, and the test time and cost are effectively saved.

The invention discloses a modularized hydraulic system testing system and method, and relates to the technical field of hydraulic testing, and the method comprises the following steps: S1, collecting outlet pulsating pressure signals of a high-pressure plunger pump and a low-pressure vane pump by adopting a nanosecond-level synchronous time mark system, generating a phase residual error map, and calculating a phase residual error map of the outlet pulsating pressure signals of the high-pressure plunger pump and the low-pressure vane pump; the hidden resonance risk is preliminarily judged through frequency drift and amplitude gradient calculation; and S2, on the basis of the synchronous acquisition base line, carrying out cross spectrum coherence degree calculation and phase difference time sequence analysis on the pulsating pressure sequence, identifying a frequency dislocation anchor point, generating a pump source pulsating interference fingerprint, and determining a time window of recessive resonance. According to the method, real-time identification, dynamic intervention and closed-loop control of recessive resonance in the hydraulic system are realized through nanosecond-level synchronous acquisition, phase conjugate inversion and frequency dislocation traction strategies, energy coupling caused by frequency dislocation is effectively avoided, the operation stability and safety of the system are improved, and the service life of equipment is prolonged.

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

The invention discloses a digital twinborn body and a digital twinborn method for a hydraulic test system of a turbine pump of a liquid rocket engine, and solves the technical problem of high production and test resource consumption caused by research and development of engine products. The basic architecture of the digital twinning body comprises a digital twinning engine, a physical entity and a digital virtual body, and dynamic unification of digital virtual body prediction performance and object actual measurement performance is realized through virtual-real interaction and model training and optimization; finally, the display effect that a digital virtual body completely replaces a liquid rocket engine turbine pump hydraulic test system entity can be achieved, and the contradiction between increasing turbine pump hydraulic test tasks and limited physical test resources is greatly relieved.

1. The name of the design product: hydraulic comprehensive test bench. 2. The use of the design product: the design product is used for the hydraulic circuit lapping of pump body and valve body and hydraulic test. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention relates to the technical field of hydraulic sealing, in particular to an O-shaped ring service life prediction method suitable for an extremely low temperature environment, and the method comprises the steps: carrying out the uniaxial tensile test of an O-shaped ring material in the extremely low temperature environment, and obtaining a stress-strain curve; establishing an O-shaped ring sealing structure model, and simulating and analyzing the mechanical properties of the O-shaped ring at extremely low temperature to obtain the relationship between the maximum contact stress and the compression ratio of the sealing surface of the O-shaped ring; and a dynamic seal friction wear hydraulic test bed is built, and the relation between the quality of the O-shaped ring and time is obtained. And based on a maximum contact stress criterion, coupling simulation and friction wear test results, and obtaining a life prediction result of the O-shaped ring. The method comprehensively considers the influence of temperature, pressure and medium on the O-shaped ring in the extremely low temperature environment, effectively improves the problem that the existing life prediction method cannot accurately reflect the failure mode of the O-shaped ring material under the extremely low temperature condition, and improves the accuracy of life prediction.

The application discloses a kind of main valve core flow, displacement, hydraulic force test system and test method, comprising: two displacement sensors, the balanced valve to be measured, hydraulic test component;The main valve core of the balanced valve to be measured and the pilot valve core are coaxially arranged oppositely;Two displacement sensors are respectively fixed with main valve core, control piston coaxially;Hydraulic test component detects the pressure of return oil outlet A, load oil port B, feedback spring cavity pressure measuring port Pc, pilot oil inlet X by each pressure sensor;And by main load, pilot control, three oil circuits of return oil back pressure, load pressure, pilot pressure and return oil back pressure are controlled respectively, while return oil flow is measured by flowmeter simultaneously.The application can synchronously dynamically measure the flow, displacement and hydraulic force of main valve core under different working conditions.

The invention discloses a rotary joint hydraulic test system and a control method, and the control method comprises the steps: connecting a first hydraulic joint and a second hydraulic joint on a tested piece through a hydraulic test system, and supplying high hydraulic pressure and low hydraulic pressure to the first hydraulic joint and the second hydraulic joint respectively; then the first hydraulic connector and the second hydraulic connector are driven to rotate to one end value in a rated angle range at a low speed through a hydraulic driving system, the pressure is relieved to zero after the hydraulic values are maintained, and then the supplied hydraulic values of the first hydraulic connector and the second hydraulic connector are alternated; the first hydraulic connector and the second hydraulic connector are driven to rotate to the other end value of the rated angle range, a complete hydraulic test cycle is formed, durability tests of the first hydraulic connector and the second hydraulic connector are achieved through multiple cycles, optimization of sealing type selection of the rotating connector is facilitated, and reliability of the rotating connector is improved.

1. Name of the product in this design: Hydraulic test bench computer control cabinet. 2. Purpose of this design: For precise, automated, and safe control of the testing process on a hydraulic testing bench. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model discloses an assembly type hydraulic characteristic test bench, which comprises an experiment box, an experiment pedestal and an electric lifting mechanism, the inner top of the experiment pedestal is provided with a plurality of groups of placing clamping grooves, the inner bottoms of the plurality of groups of placing clamping grooves are in sliding clamping connection with support top plates, the bottom ends of the support top plates are symmetrically connected with extrusion push rods, and the extrusion push rods are in sliding clamping connection with the support top plates. The outer side of the extrusion push rod is sleeved with a spring, the bottom extending end of the extrusion push rod is connected with a sensing sliding block, a pressure sensing detection table is installed at the inner bottom of the experiment table base, a plurality of sets of sensing empty grooves are evenly formed in the pressure sensing detection table, and a hydraulic guide pressure box is arranged in the experiment box; the beneficial effects of the utility model are that through the integrated extrusion impact compression resistance test and the integrated multi-group compression liquid injection hydraulic test structure, the detection cost is reduced, the detection diversity is improved, the manual operation is reduced, and the use convenience and the test efficiency are improved.

The invention relates to the technical field of hydraulic test equipment, in particular to a pump valve integrated reliability comprehensive test system, and aims to solve the problems that existing pump valve test equipment is single in stress simulation and cannot cooperatively apply working stress and environmental stress. The system comprises an environment simulation unit, a pump valve tested piece, a working fluid loop, a flexible connection mechanism and an integrated intelligent console. The environment simulation unit comprises a three-comprehensive test box and a vibration table, and the three-comprehensive test box is arranged on the vibration table; a pump valve tested piece is arranged in the three-comprehensive test box; the working fluid loop is arranged outside the test box and comprises a circulating water pump and a pressure tank; the flexible connecting mechanism penetrates through the wall of the test box to communicate the external working fluid loop with the internal pump valve tested piece; the integrated intelligent console cooperatively controls the vibration table, the three comprehensive test boxes and the working fluid loop, so that multiple composite stresses such as vibration, temperature and humidity, flow and pressure are simultaneously applied to the tested pump valve piece.

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

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

A hydraulic testing system and method for a high-temperature, high-pressure feedwater pump includes a main circulation loop system, a steam heating system, a makeup water system, and a cooling water system. The main circulation loop system includes an integrated water tank. The outlet of the integrated water tank is sequentially connected to an inlet shut-off valve, an inlet regulating valve, and the inlet of the high-temperature, high-pressure feedwater pump. The outlet of the high-temperature, high-pressure feedwater pump is sequentially connected to an outlet regulating valve, a flow meter, a first shut-off valve, and a heat exchanger before returning to the inlet of the integrated water tank. The steam heating system is connected to the inside of the integrated water tank for heating the medium. The makeup water system is connected to the integrated water tank for automatically replenishing the medium loss. The cooling water system is connected to the heat exchanger for cooling the circulating medium. The system features a compact structure, high degree of automation, precise parameter adjustment, and safe and stable operation.

The invention provides a full-automatic intelligent testing method and system for a hand-operated direction valve for a hydraulic support, and belongs to the technical field of hydraulic support direction valve testing, and the method comprises the steps: calling a corresponding digital twinborn model according to the model information of a tested hand-operated direction valve, and obtaining standard test parameters to carry out the pretest of the tested hand-operated direction valve; calibrating the digital twin model through a parameter optimization algorithm; and executing a reversing performance test on the tested hand-operated reversing valve based on the calibrated digital twinborn model. Automatically switching test items according to a preset test sequence, reconstructing a corresponding hydraulic test loop, and solving an optimal control instruction based on the calibrated digital twin model and a safety constraint optimization algorithm; and after all the test items are completed, comprehensively analyzing the commutation performance test data and other item test data, and generating a test report. According to the invention, automatic adaptation and precise testing of different types of hand-operated direction valves can be realized, and the testing precision, efficiency and automation level are improved.

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

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

The utility model discloses a pipeline reel structure of hydraulic test equipment, which belongs to the technical field of hydraulic test equipment, and comprises a hydraulic test equipment box body, a pipeline reel mechanism is arranged on the outer wall of one side of the hydraulic test equipment box body, and the pipeline reel mechanism comprises two support side lug plates which are symmetrically arranged, a reel piece and a servo motor, a finger air cylinder is arranged right in front of the reel piece, two clamping claws are symmetrically arranged at the working end of the finger air cylinder, and a pipeline penetrates through the position between the two clamping claws and is wound and wound to the reel piece. Wherein the outer wall of one supporting side lug plate is further provided with a swing arm assembly used for driving the finger air cylinder to swing in an arc mode along the outer circumferential track of the reel piece to adjust the position and angle of the finger air cylinder, and when the swing arm assembly drives the finger air cylinder to move in an arc mode, the finger air cylinder clamps the pipeline and bends the pipeline to lock the looseness of the pipeline. The pipeline clamping device clamps a pipeline, the pipeline is prevented from sliding off from the reel piece or being wound disorderly, safety is improved, and manual intervention is reduced.

The invention provides a hydraulic test system for a hydraulic cylinder, and the system comprises an oil tank which stores hydraulic oil; an input oil path of the first main pump is communicated with the oil tank; the first main oil way reversing pressure regulating valve group is communicated with an output oil way of the first main pump; an input oil path of the second main pump is communicated with the oil tank; the second main oil way reversing pressure regulating valve group is communicated with the output oil way of the second main pump, and a flow collecting valve is arranged between the output oil way of the first main pump and the output oil way of the second main pump; wherein the rated displacement of the first main pump is configured to be smaller than the rated displacement of the second main pump, and the oil path drift diameter of the first main oil path reversing pressure regulating valve group is smaller than the oil path drift diameter of the second main oil path reversing pressure regulating valve group, so that at least two tested hydraulic cylinders with different specifications are connected.

The utility model discloses a hydraulic test device for pipe parts, which relates to the field of hydraulic test devices for oil and gas exploitation pipe parts and comprises a valve group module, a pump group module, a safety isolation chamber and a control center. According to the utility model, the safety isolation chamber formed by the plurality of detachably connected isolation coamings and the corresponding top cover coamings is designed, the length of the safety isolation chamber can be adjusted according to the length of a test pipe part, so that the hydraulic test equipment can adapt to multiple test scenes, and in addition, the pump group module and the valve group module are integrated, so that the test efficiency is improved. The equipment is fast and convenient to hoist, transport and mount, the deployment period is shortened, the pump end unloading valve is connected with the one-way valve pipeline, and before the high-pressure pressurizing test of the pipeline component, the pump end unloading valve is opened to protect the one-way valve and prevent the one-way valve from being damaged by high pressure.

Hydraulic system (10, 100) with a hydraulic consumer (V), a first line arrangement (12), a first hydraulic sensor (16), a first electrically actuated valve (20), a second electrically actuated valve (22), a pressure line (P) and a tank line (T), wherein the first line arrangement (12) connects the hydraulic consumer (V) to the pressure line (P) via the first electrically actuated valve (20) and wherein the first line arrangement (12) connects the hydraulic consumer (V) to the tank line (T) via the second electrically actuated valve (22), wherein the first hydraulic sensor (16) in the first line arrangement (12) is located downstream of the first electrically actuated valve (20) from the pressure line (D) and upstream of the second electrically actuated valve (22) from the hydraulic consumer (V), characterized by the fact that the hydraulic system (10, 100) further comprises a functional diagnostic unit (2) for performing a first test sequence and a second test sequence, wherein in the first test sequence a first hydraulic test signal is applied by actuating the first electrically actuated valve (20) for a first time interval (t1), and the functional diagnostic unit (2) is configured to receive a measurement signal (M1) from the first hydraulic sensor (16) and to compare the measurement signal (M1) of the first hydraulic sensor (16) with the first hydraulic test signal, and wherein in the second test sequence a second hydraulic test signal is applied by actuating the second electrically actuated valve (22) for a second time interval (t2) and the functional diagnostic unit (2) is configured to receive a measurement signal (M1) from the first hydraulic sensor (16) and to compare the measurement signal (M1) of the first hydraulic sensor (16) with the second hydraulic test signal.

The utility model discloses a device for detecting the sealing performance of a central rotary joint of a tunnel boring machine, and solves the problems that the maintenance pressure maintaining test of a rotary joint of a shield tunneling machine in the prior art is greatly limited by a site, and the pressure maintaining mode is single. The tunnel boring machine center swivel joint sealing performance detection device comprises a movable trolley which is provided with an adjustable fixing frame used for bearing a swivel joint. The moving trolley is provided with a driving mechanism used for driving the rotary joint to rotate, a hydraulic system used for providing a hydraulic test and an air pressure system used for providing an air pressure test. According to the utility model, the hydraulic system and the pneumatic system are arranged on the moving trolley, so that a hydraulic test system pressure maintaining test or a pneumatic test system pressure maintaining test can be selectively performed on the swivel joint, the pressure maintaining modes can be freely switched according to scene requirements, and the dual requirements of dynamic pressure maintaining and static pressure maintaining are met; the problem that a traditional swivel joint test is single in pressure maintaining mode is solved.

The utility model discloses a large -scale hydraulics test platform, including water storage pool, bearing piece, support, shunt cylinder and water pump, the top surface of water storage pool is equipped with the screen board, and the bottom of bearing piece is fixedly connected with the bottom surface of water storage pool, and the top of bearing piece penetrates the mesh of screen board, and the support is spaced apart and set up in the top of bearing piece, and the shunt cylinder is connected with the support, and the shunt cylinder is equipped with several different diameter connecting holes, and the water inlet of water pump is equipped with the water inlet pipe and inserts into water storage pool, and the water outlet of water pump is equipped with the water outlet pipe and is connected with the shunt cylinder, through the setting of bearing piece, makes the test product all by bearing piece support, and the screen board is not stressed in the test process, has improved the support intensity to test product, is applicable to bigger heavier filler tower, and through the setting of shunt cylinder again, makes the device can choose different connecting hole connection according to different specifications test product, and then makes the simulation condition more rich, is applicable to more kinds of specifications filler tower.

This invention discloses a hydraulic actuation testing device for aviation hydraulic components, belonging to the field of hydraulic component testing technology. It includes a base with a protective cover above it, a hydraulic station inside the base, a fixture and a lateral loading assembly on the base surface, an actuator cylinder installed inside the fixture, and a main thrust actuator and a hydraulic testing assembly on both sides of the fixture. This invention constructs a multi-axis composite load simulation system by setting up a main thrust actuator, a vertical bending load actuator, a lateral force actuator, and a torque actuator. This system can accurately reproduce the complex spatial loads acting on the actuator cylinder when an aircraft lands on a sea-based platform. Simultaneously, an ultrasonic device integrated into the hydraulic testing assembly can actively generate cavitation bubbles in the oil circuit, simulating extreme fluid environments. This transforms the transient impact of a simulated aircraft landing on a sea-based platform into a cyclical continuous loading process, improving the data quality for fatigue damage research and life prediction testing of aviation hydraulic actuator cylinders.

The utility model relates to the technical field of injector manufacturing, in particular to an injector hydraulic test clamping mechanism which comprises a base, a sealing element, a fastening element and a connector, the base is of a bowl-shaped structure with an opening formed in one end face, and an injector is fixedly connected to the opening of the base in an airtight mode through the fastening element. A sealing element is arranged between the injector and the base, a connector threaded connector communicated with the interior is arranged on the side face of the base, a connector is installed at the connector threaded connector, and the base is connected with a liquid injection opening of hydraulic detection equipment through the connector. According to the clamping mechanism for the hydraulic test of the injector, the traditional mode of partitioned test and repeated plugging and blockage removal is changed, the overall structure facilitates rapid assembly and connection of hydraulic detection equipment, the test preparation time is shortened, the hydraulic test of the injector can be efficiently completed, and the requirement for efficiency is met when the requirement for testing a large number of parts of the injector is met.

1. The name of the design product: graphical user interface for vehicle test page operation details of electronic equipment. 2. The use of the design product: an electronic device. 3. The design points of the design product: in the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: for displaying relevant information of vehicle system operation details. 7. Other circumstances that need to be explained: design 1 front view is the main interface view, clicking the sixth button on the right side of design 1 front view can enter design 1 interface change state diagram 1; clicking the "system test" button in design 1 interface change state diagram 1 page can enter design 1 interface change state diagram 2; clicking the "hydraulic test" button on the left side of design 1 interface change state 2 page can enter design 1 interface change state diagram 3; design 2 front view is the main interface view, clicking the sixth button on the right side of design 2 front view can enter design 2 interface change state diagram 1; clicking the "walking test" button in design 2 interface change state diagram 1 page can enter design 2 interface change state diagram 2.

The invention belongs to the field of pressure setting of pilot operated safety valves, and particularly relates to a pressure setting device and method of a pilot operated safety valve and a hydraulic test system. The device comprises a pressing control module, a data processing module and a box body, the pressing control module is used for providing a controllable hydraulic source for the to-be-tested safety valve through the pressure output port; the data processing module is connected with the pressing control module and is used for acquiring a pressure signal of the pressure output port and judging opening and closing fixed values of the safety valve to be tested based on the pressure signal; the box body accommodates and integrates the pressing control module and the data processing module, and provides structural support for connection of an oil path, a gas path and a circuit between the pressing control module and the data processing module. The pressure setting device has the advantages that high-precision control and automatic judgment in the pressure setting process are achieved, transportation and field operation are facilitated due to the integrated box design, and setting efficiency and reliability are effectively improved.

The invention relates to the technical field of hydraulic pressure test devices, in particular to a steel pipeline hydraulic pressure test device which comprises a blocking plate welded and installed at an outer end flange plate of a flange type rubber flexible connector, and the inner end of the flange type rubber flexible connector is detachably installed on a hydraulic pressure test steel pipe body; the exhaust valve pipe is installed outside the blocking plate in a communicating mode, and a pressure gauge is installed at the inner side end of the valve body in a communicating mode. The centering positioning assembly comprises a fixing plate arranged on the inner side of the blocking plate and at least three tensioning blocks which are evenly distributed along the axis of the fixing plate and are installed in a sliding mode; a centering rapid positioning and aligning function can be realized, rapid installation and welding of a blocking plate and a flange plate are facilitated, the number of configured operators is reduced, the welding precision is guaranteed, the reliability of a hydraulic test is improved, and the construction efficiency is improved; the device can maintain the sealing performance of the flexible interface, is convenient to disassemble and assemble for repeated steel pipe hydrostatic test, and has wide applicability.

The utility model discloses a hydraulic test system adopting a water pump driven by a magnetic coupling as a pressure source. The hydraulic test system is provided with two water pressure systems with different water temperatures, namely a hot water system and a cold water system. Water is prevented from leaking from the sealing position of the transmission shaft and the shell of the pump. The hot water system and the cold water system respectively test a tested piece according to certain temperature, pressure and time control conditions, and quickly change water through the make-up pump according to the time condition, so that efficient temperature change (cold and hot water circulation) test on the tested piece is realized. The control can be realized by starting, stopping and rotating speed control of a plurality of motors by a controller, on-off control of a plurality of groups of electromagnetic stop valves and cooperation with other control valves.