329 results about "Hydrostatic test" patented technology

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

The water passing ball device comprises a starting pipeline with a ball receiving chamber, a water ejecting ball is arranged in the ball receiving chamber, the starting pipeline is connected with an installation pipeline, the installation pipeline forms a ball serving chamber, the installation pipeline is detachably connected with the long conveying pipeline, and the long conveying pipeline is connected with the water ejecting ball. The starting pipeline is connected with an external pipeline used for conveying media to the starting pipeline, the media in the external pipeline can abut against the water jacking ball so that the water jacking ball can overcome the elastic force of the installation pipeline and the elastic force of the long-distance conveying pipeline to move along the long-distance conveying pipeline, air in the long-distance conveying pipeline can be exhausted, the water jacking ball can be filled in the serving ball, the water inlet is connected, and the exhaust valve is opened. According to the invention, a discharge port is not arranged at a high point along the way of the long-distance pipeline, the cost is reduced, and the hidden danger of leakage in the future pipeline operation process is reduced. The water inlet control valve is opened, the ball is pressed to the ball receiving chamber at the tail end of the pipeline by using the pressure of water, and a hydrostatic test is carried out on the pipeline through the pressurizing pump.

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 provides a plugging device for a pipeline hydrostatic test and a hydrostatic test method. The plugging device comprises a pipeline; the plugging device is used for sealing the pipeline in the hydrostatic test method and is arranged at the outlet end of the pipeline. The extending end of the hydraulic cylinder pushes the release sealing end to extend out of the sleeve and enter the pipeline, it can be guaranteed that when the release sealing end extends into the pipeline, the servo motor drives the lead screw to rotate, then the lead screw nut continuously moves in the transverse direction of the lead screw, and therefore the release sealing end can be effectively released. The arc-shaped sealing face is pushed to be unfolded in the longitudinal direction of the pipeline, the arc-shaped sealing face can be tightly attached to or press the inner wall of the pipeline, a better contact face is formed, the sealing performance is enhanced, the sealing performance is further improved, and meanwhile high stability can be kept in the high-pressure water pressure test process.

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 belongs to the technical field of testing, and particularly relates to a high-pound-level thin-wall part flange-free water pressure test anti-deformation device which comprises a workbench, a positioning assembly, a pressurizing assembly and a rotating assembly, the positioning assembly is arranged above the workbench and comprises a supporting circular plate, a hollow cylinder is fixed to the bottom of the supporting circular plate, and the rotating assembly is arranged on the supporting circular plate. The hollow cylinder is rotatably matched with the working table, a plurality of positioning bosses for positioning a test piece are arranged on the upper surface of the supporting circular plate, the pressurizing assembly is used for increasing water pressure for the test piece and comprises a plurality of plugging blocks arranged above the working table, and the plugging blocks coaxially correspond to the positioning bosses respectively. According to the invention, a traditional direct clamping and fixing mode is abandoned, so that the possibility that the test pieces are extruded and deformed by external force when being fixed is avoided, in addition, a plurality of test pieces are tested at the same time, the working continuity is high, the time required by the test is effectively shortened, and the test efficiency is improved.

The invention discloses a fractured rock mass hydraulic pressure test and array electrode monitoring and detecting device and a using method, and relates to the technical field of hydraulic engineering geological investigation, the fractured rock mass hydraulic pressure test and array electrode monitoring and detecting device comprises an upper plug and a lower plug arranged below the upper plug, a floral tube is fixedly arranged between the lower plug and the upper plug, and a water pump pipe is arranged on the upper plug; the upper plug and the lower plug are both sleeved with sealing air bags, an air pumping assembly is arranged above the upper plug, the portion, above the lower plug, of the floral tube is sleeved with an air guide ring, an electromagnetic valve is arranged between the air guide ring and the air conveying pipe, and a pneumatic telescopic assembly is arranged at the air outlet end of the air guide ring. A conductive wire is wound on the outer side of the floral tube, a waterproof sealing cylinder is arranged on the conductive wire, an electrode bar is arranged in the waterproof sealing cylinder, and a waterproof sealing assembly is arranged on the side, away from the floral tube, of the waterproof sealing cylinder. And the spatial distribution of the pressurized water area fracture system is inverted.

The invention relates to the technical field of blind plate detection, and aims to provide a hydraulic test method for detecting a pressure-bearing sealing blind plate of a pump shell, which comprises the following steps: mounting a blind plate to be tested, performing a first pressure boosting test, performing a first pressure relief test, performing a second pressure boosting test and performing a second pressure relief test, multiple times of pressure relief and pressure maintaining are carried out in the first pressure relief test and the second pressure relief test, and whether leakage points and deformation points exist or not is observed; through two times of boosting tests of different water temperatures, complex working conditions during operation of the main pump can be simulated, so that test results are more accurate.

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

The invention provides an explosion-proof tank hydraulic pressure test device and a test method thereof, and belongs to the technical field of explosion-proof tank hydraulic pressure tests. A hydraulic pressure test device for an explosion-proof box comprises an L-shaped rack, a concave support, a concave bearing plate, a vertical rod, an L-shaped connecting pipe, a first circular moving block and abutting parts, when a pressing plate descends, the pressing plate can be used for pressing the top of the explosion-proof box placed on the concave bearing plate, and meanwhile the two abutting parts are driven to abut against the two corresponding sides of the explosion-proof box respectively, so that the top of the explosion-proof box is pressed. When the pressing plate ascends to be separated from the top of the explosion-proof box, the two abutting parts do not make contact with the two corresponding sides of the explosion-proof box. Double clamping of the top and the side face of the explosion-proof box is achieved by driving the pressing plate to descend, the clamping force and stress uniformity are remarkably enhanced, the test stability and safety are improved, meanwhile, the second circular moving block is used for conveying gas to be matched with the pressing plate to blow gas to the top of the explosion-proof box, the explosion-proof box is cleaned, the contact effect is optimized, and it is ensured that test data are accurate.

The invention relates to the technical field of hydropower station pressure steel pipe detection, in particular to a hydropower station steel branch pipe differential graded loading and unloading hydrostatic test method, system and equipment and a storage medium. The hydraulic test process is scientifically divided into a low-pressure stage, a medium-pressure stage and a high-pressure stage, differentiated boosting amplitude and speed control strategies are adopted in the different stages, the technical limitation of a traditional uniform graded boosting method is broken through, and an innovative control mode of low-pressure fast rising and high-pressure slow rising is achieved. The large boosting amplitude and the high boosting speed are adopted in the low-pressure stage, the bearing allowance of the steel branch pipe in the elastic deformation stage is fully utilized, and the test efficiency is remarkably improved; and in the high-pressure stage, the small pressure increasing amplitude and the slow pressure increasing speed are adopted, the sensitive characteristic when the steel is close to the yield strength is effectively adapted, and the local stress concentration and plastic deformation risks are avoided.

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

The invention relates to a rapid sealing method for a deep sea equipment hydrostatic test measuring wire joint, and the method comprises the following steps: 1, selecting a sealing region, and sealing the sealing region; the sealing area comprises a metal section formed after the external metal core is connected and further comprises an outer skin head section adjacent to the external metal core, the length of the metal section is L1, and the length of the outer skin head section is L2; step 2, cleaning the surface of the sealing area; step 3, cutting out a rubber-based pressure-sensitive adhesive tape with a proper length, and wrapping the rubber-based pressure-sensitive adhesive tape outside the sealing area; and 4, the rubber-based pressure-sensitive adhesive tape is tightly attached to the outer surface of the sealing area in an extrusion mode, so that the sealing operation of the wire connector can be conducted on an operation site, the method is simple, the cost is low, and the good sealing performance is achieved.

The utility model discloses a hydrostatic test device for a pressure vessel, and particularly relates to the technical field of hydrostatic tests, comprising a test bench, the upper surface of the test bench is provided with a water collecting tank, the upper surface of the test bench is fixedly provided with a pair of vessel limiting plates for placing the pressure vessel, and the pair of vessel limiting plates form a V-shaped structure. A lifting mechanism is arranged in the test bed, a pressing and fixing structure and a pressure test pump are arranged on the lifting mechanism and are both arranged on the upper surface of the test bed, the pressing and fixing structure is used for pressing and fixing a pressure container arranged on the pair of container limiting plates, and the output end of the pressure test pump is fixedly communicated with a sealing taper sleeve. According to the utility model, the problem that the efficiency of a water pressure test is influenced due to the complicated connection between pipes during the pressure test connection of the pressure vessel is solved; and the technical problem that the pressure container is mostly in an exposed state during the hydrostatic test, so that the safety of the pressure container during the hydrostatic test is insufficient is solved.

A hydrostatic test device for an inclined swirler of a heavy duty gas turbine comprises an annular base for containing the inclined swirler, two parallel sealing ring grooves are formed in the inner conical surface of the base, and rubber sealing rings matched with the sealing ring grooves are arranged in the sealing ring grooves. The two parallel sealing ring grooves and the rubber sealing ring enable the upper portion and the lower portion of a blade hole in the side face of the inclined cyclone to be tightly attached, the effect of sealing the blade hole can be achieved in the hydrostatic test, the device further comprises three to six pressing plates which are evenly distributed on the surface of a circle of the inclined cyclone, and the pressing plates press the inclined cyclone through bolts and locking nuts. A copper plate is arranged between the pressing plate and the end face of the inclined cyclone.

The utility model discloses a special water pressure test blocking plate for a steel skeleton composite pipe, which comprises a steel skeleton composite pipe body with a pipe wall thickening section at the end part, and a blocking plate for blocking the end part of the steel skeleton composite pipe body is arranged at the end part, close to the thickening section, of the steel skeleton composite pipe body. The peripheral face of the steel skeleton composite pipe body is sleeved with a locking sleeve piece making contact with the thickening section, and the locking sleeve piece and the blocking plate are connected through a plurality of fastening sleeve pieces. The tool is simple in structure, fast to manufacture and convenient to use, the tool can be recycled, the blocking plate can be fixed to the end of the steel skeleton composite pipe body through mutual matching of the locking sleeve piece and the fastening sleeve piece, and meanwhile follow-up replacement of the blocking plate is facilitated.

The invention discloses a prestressed concrete cylinder pipe water hammer real-time distinguishing and positioning system for hydraulic monitoring and a mounting and using method, the system comprises a plurality of sensors located on a concrete cylinder pipe, the concrete cylinder pipe is also provided with a flow velocity meter, and the flow velocity meter and the sensors are both connected with an acquisition device. The high-frequency pressure pulsation sensors and the flow meters are reasonably arranged in the PCCP, high-frequency change data of the water pressure and the flow speed in the PCCP can be obtained in real time, compared with a traditional water pressure test or static monitoring method, the dynamic fluctuation process of the water pressure and the flow speed can be captured, the hydraulic boundary condition change in pipeline operation can be comprehensively reflected, and the method is suitable for popularization and application. And data support is provided for hydraulic analysis and safety evaluation.

An integrated high-efficiency hydrostatic test device for a motor shell comprises a rack, an operation table and a test bed, the operation table and the test bed are arranged on the rack to form a whole, a water tank is arranged in the lower space of the operation table, a motor pump set is arranged in the lower space of the operation table, and a permanent magnet direct drive motor is adopted as a motor; the test bench comprises a workpiece placing device, a pressing and clamping device and a communicating device. The operation table and the test table comprise enclosure structures; the workpiece placing device comprises a base and T-shaped bolts, and the base is provided with a plurality of T-shaped grooves; the pressing and clamping device comprises a pressing support, a pressing oil cylinder, a pressing block, a pressing flange, a clamping oil cylinder and a clamping support which are arranged in a cross shape and press and clamp the two sides and the two ends of the motor shell respectively. The communicating device comprises an oil cylinder valve block, a pipe connecting seat, a stop valve, a quick connector, a connecting hose, a water filling and pressing connector and a water discharging opening. The pressing test process is safe and reliable, the motor shell is more convenient to install, the error rate of connecting pipelines is reduced, and the working efficiency is effectively improved.

The present invention discloses a pipeline water pressure test device, which relates to the technical field of water pressure test. The present invention comprises: a mounting frame, on one side of which a first mounting plate is rotatably mounted. The present invention drives the connecting rod to slide through a third driving member, so that the water in the lower pipeline generates a fluid shock wave at its end, that is, at the flow channel, under the action of a cylindrical block, to simulate the water hammer phenomenon, and through the compressed air inside the upper pipeline to simulate the water hammer eliminator, the water flow in the pipeline is buffered and adjusted to reduce the influence of the water hammer phenomenon on the pipeline, and after completing the impact test, the two connected pipelines can be injected with water through the water injection pipe to pressurize and exhaust the air therein, and then the two pipelines are separated by a plugging member, so that the two pressure detection mechanisms can respectively detect the water pressure in the two pipelines. Compared with the prior art, the present invention can simulate the fluid shock wave test on the pipeline, and can also test the pressure bearing capacity and sealing performance of the pipeline by static pressurization, which is more convenient and easy to use.

The invention provides a pump valve shaft seal water hydraulic pressure test detection device which comprises a box body, a partition plate is fixed in the box body, an opening is formed in the partition plate, a movable plate is movably installed in the opening, a displacement mechanism and a positioning column are fixed to the movable plate, a positioning pipe is movably installed at one end of the positioning column, and the other end of the positioning pipe is provided with a clamping groove. The positioning pipe and the displacement mechanism are both fixed to the side of the box body, a pushing mechanism is fixedly installed on the side of the box body, fixing assemblies are installed on the pushing mechanism, a valve body is movably installed between the fixing assemblies, a cavity is formed in the box body, and the valve body is movably installed in the cavity. During use, before the pump body is installed, the ring seat drives the fixed pipe to move, the fixed pipe provides a required space for installation of the valve body after moving, the ring seat and the fixed pipe enter one end of the valve body in the later period, the valve body is limited and supported through the fixed pipe, and the movable seat moves in the later period to extrude and fix the valve body between the fixed seats; and air enters the fixed pipe at the later stage, and the elastic seat deforms to be in contact with the valve body for sealing during air intake.

The utility model relates to the technical field of back walls, in particular to an underlying turnover type pipeline hydraulic pressure test back wall which comprises a steel plate box, the steel plate box is arranged on the ground, the top end of the steel plate box is open, a weight reduction groove is formed in the middle of the steel plate box, I-shaped steel is connected into the weight reduction groove, and the I-shaped steel is connected with the top end of the steel plate box. The steel plate box is filled with concrete, the surface of the steel plate box is provided with an auxiliary pushing side wall and an auxiliary supporting side wall, the auxiliary pushing side wall and the auxiliary supporting side wall are oppositely arranged, the auxiliary pushing side wall is connected with a plurality of auxiliary pushing pieces used for abutting against a pipeline, and a plurality of auxiliary supporting pieces used for supporting the steel plate box are arranged between the auxiliary supporting side wall and the ground. The utility model has the effect of reducing the cost consumption of the pipeline hydrostatic test.

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

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

The utility model discloses an auxiliary device for a pipeline hydrostatic test in the field of hydrostatic tests, which comprises a mounting ring, a mounting component connected to one side of the mounting ring, a telescopic rod connected to one side of the mounting ring far away from the mounting component, an electric telescopic rod connected to one side of the mounting ring far away from the mounting component, and a butt joint ring connected to the telescopic end of the telescopic rod. According to the pipeline water pressure detection device, the pipeline butt joint efficiency and stability in the pipeline water pressure detection process can be effectively improved through the pipeline water pressure detection device, the pipeline water pressure detection efficiency is improved, and the pipeline water pressure detection accuracy is improved. By means of the adjusting structure of the device, the device can conduct compatible limiting on pipelines with different diameters.

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 invention discloses a water pressure test device, which comprises a detection pipe, a water pressure test device and a water pressure test device, the exhaust valve is arranged on the outer side wall of the detection pipe and is communicated with the water pressure chamber; the blocking plate is hermetically and fixedly connected with one end of the detection tube; the water inlet valve is arranged on the blocking plate, communicates with the interior of the water pressure cavity and is used for injecting water into the water pressure cavity; the flange is hermetically and fixedly connected with the other end of the detection pipe; a mounting opening is formed in the flange; one end of the to-be-tested piece is arranged in the water pressure chamber through the mounting port; and the pressing plate is in sealing connection with the flange to seal and fix the other end of the to-be-tested piece. According to the invention, the accuracy, reliability and efficiency of the instrument casing water pressure test are improved.

The utility model is suitable for the technical field of hydrostatic tests, and provides a sealing structure for a hydrostatic test in a reinforced concrete pipeline, which comprises a steel cylinder arranged in a pipeline body, the steel ring is mounted at one end of the steel cylinder; the rubber tire is arranged in the groove of the steel ring and used for sealing the contact point of the steel ring and the pipeline body, the rubber tire is in contact with one side of the groove, the hard square rubber strip is arranged on the rubber tire in a sleeving mode, and the water swelling sealing rubber strip is arranged in the groove of the steel ring and used for sealing the contact point of the steel ring and the pipeline body. The water swelling sealing rubber strip is arranged on the hard square rubber strip in a sleeving manner; and the positioning mechanism is arranged on the steel cylinder and is used for positioning the steel cylinder. According to the water pressure test sealing structure in the reinforced concrete pipeline, the common tire inner container, the hard square rubber strip and the hollow water swelling sealing rubber strip which can be easily purchased from the market are arranged, and special customization is not needed, so that the cost is reduced, and the water pressure test sealing structure better meets the market requirement.

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

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

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