270 results about "Pressure rise" patented technology

The invention belongs to the technical field of valves, and particularly discloses a self-pressure-control cut-off ball valve which comprises a valve shell, a sealing cavity is formed in the middle of the interior of the valve shell, a spherical valve element is rotationally arranged in the middle of the inner wall of the sealing cavity in a sealed mode, the middle of the spherical valve element is in a through opening shape, and an indicating groove is formed in the bottom of the valve shell. When pressure in a pipeline rises, the transmission assembly can be triggered in the valve shell to work so that the spherical valve element can rotate, then the valve shell is opened and conducted, the transmission assembly can be further driven to work along with pressure rising, and when the maximum pressure value of the valve is reached, the transmission assembly can be driven to rotate, so that the transmission assembly can be driven to rotate. At the moment, the opening degree of the spherical valve element in the valve shell is in the maximum state, the limiting assembly is triggered to limit the transmission assembly at the moment, the situation that the spherical valve element continues to rotate, and consequently the opening degree is decreased is prevented, and opening and closing of the valve can be automatically adjusted according to changes of the pressure in the pipeline.

The invention relates to the technical field of ascites drainage, in particular to an ascites drainage device which comprises a puncture tube, the output end of the puncture tube is fixedly connected with a one-way valve, the output end of the one-way valve is fixedly connected with a separation tube, a drainage opening is formed in the bottom of the separation tube, and the output end of the drainage opening is fixedly connected with a drainage tube. The output end of the drainage tube is fixedly connected with a liquid accumulation bag, a filter cartridge is arranged in the separation tube, and the input end of the filter cartridge is communicated with the input end of the separation tube. The spiral flow deflectors which are uniformly arranged along the central axis are arranged at the input end of the filter cartridge, so that ascites can be guided to form a spiral flowing state, and solid substances are always kept in dynamic distribution of'spirally advancing along the wall 'by virtue of centrifugal force; meanwhile, when the filter cartridge is blocked and the pressure rises to a preset value, the second T-shaped piston rod can extrude the titanium alloy spring to slide, so that ascites enters the hole-free groove to expand the internal space of the filter cartridge, the pressure is balanced, and time is bought for cleaning blockages.

The invention discloses an engine multi-vehicle-type adaptive NVH quality optimization method and system, and belongs to the technical field of automobile engine debugge.The method comprises the steps that after an engine is installed on a to-be-adapted vehicle, vehicle working condition data are collected in real time, the vehicle working condition data comprises a vehicle speed, an accelerator opening degree, an engine rotating speed, a gear, a hydraulic torque converter locking state and an engine oil temperature signal; the vehicle working condition data is compared with the working condition of the engine noise sensitive working condition, and whether the engine noise sensitive working condition is entered or not is recognized; when the engine has the noise sensitive working condition, an NVH control strategy embedded in an engine electronic control unit is activated; the NVH control strategy comprises adjustment of an engine ignition angle and oil injection parameters; the engine is controlled according to the ignition angle optimization control instruction and the oil injection parameter optimization instruction; and when the vehicle runs out of the working condition of the noise sensitive working condition of the engine or gear shifting is completed, the conventional combustion control logic is recovered. And the rising rate of the pressure in the cylinder is effectively reduced, so that the structural knocking noise within the range of 150-600Hz is inhibited.

The invention relates to the technical field of transportation devices, and discloses a coated glass carrying control method and system, and the method comprises the steps: respectively collecting surface reflection spectrum data, dimension specification parameters and carrying force arm information; extracting film layer combination characteristics, and carrying out bearing capacity calculation by combining dimension specification parameters and carrying force arm information to obtain a theoretical stress extreme value; acquiring a pressure rise rate and a steady-state leakage rate, and performing airtight characteristic inversion on the coated glass based on the pressure rise rate and the steady-state leakage rate to obtain an interface adsorption efficiency value; carrying out constraint boundary fusion on the theoretical stress extreme value and the interface adsorption efficiency value to obtain a double constraint envelope; time sequence deduction is conducted on the mechanical arm based on double constraint envelope, and a space motion time sequence is obtained; a self-adaptive inertia carrying instruction is generated based on the space motion time sequence; the carrying stability of the coated glass can be improved.

The invention relates to the technical field of product detection, in particular to a plastic mold production quality detection method and system. The method comprises the following steps: acquiring in-mold pressure data of each cavity of the multi-cavity mold in a plastic injection molding process and mold wall temperature data of a cooling stage; determining a pressure rise acceleration curve based on the in-mold pressure data of each cavity; based on the pressure rising acceleration curve and a preset fluctuation threshold value, a filling fluctuation index of the melt filling stage is determined; based on the mold wall temperature data, a cooling hot spot index of a cooling stage is determined; and comparing the filling fluctuation index with a filling fluctuation threshold value, and comparing the cooling hot spot index with a cooling hot spot threshold value to obtain a detection result of the production quality of the plastic mold. The objective of the invention is to solve the problem of early cracking, deformation or structural failure of a product caused by difficulty in accurately detecting the product produced by a plastic mold in the prior art.

The invention belongs to the technical field of transformer protection, and particularly discloses a transformer safety protection device. A trigger valve body is arranged on the main body; the isolation shell is arranged outside the main body, and a blocking area is formed between the isolation shell and the main body; the connecting rod frame is slidably arranged in the blocking area; the explosion suppressant storage tank is arranged on the inner wall of the isolation shell; and the trigger valve body is arranged to trigger the connecting rod frame to open the explosion suppressant storage tank when the air pressure in the main body rises. When air pressure rises due to electric arcs, short circuits and the like generated in the transformer due to faults, the trigger valve body is pushed by the internal air pressure to act, then the connecting rod frame is driven to slide in the blocking area, the releasing mechanism of the explosion suppressant storage tank is triggered in the movement process of the connecting rod frame, the explosion suppressant is rapidly sprayed to the main body, and suppression of initial faults is achieved. According to the protection device, active protection is achieved through air pressure triggering, faults are restrained in the germination stage, and meanwhile high-temperature oil gas generated by the faults can be preliminarily isolated through an isolation area formed by the isolation shell and the main body.

The invention provides an adsorption pressure return type blowout control method, which comprises the following steps: intervening when well control abnormity occurs at the beginning (such as overflow precursor), compounding a methane adsorbent and a conventional drilling fluid additive to prepare high-density composite well control fluid, and injecting the high-density composite well control fluid into a shaft by a special device at a position 100-200m below a wellhead according to preset displacement and pressure parameters. According to the method, bubbles in a shaft are adsorbed through an adsorbent, the slippage speed and the gas phase volume fraction are reduced, and the synergistic effect of static pressure constraint and active adsorption is achieved. Therefore, back pressure fluctuation can be stabilized in the early stage of gas cut, gas column expansion and pressure rising are limited, the risk of pressure leakage and secondary eruption is reduced, the purpose of preventing or restraining blowout is achieved, and the gas cut blowout prevention device is suitable for complex working conditions such as fractured stratums, deep water, high temperature and high pressure and narrow-density windows.

The application provides a delay opening toe sleeve, comprising: a hollow pipe, a lower end of which is configured as a lower joint and is provided with a first communication hole; a sealing sleeve and a communication sleeve sleeved on the hollow pipe, a first annular space and a second annular space being respectively formed between the sealing sleeve, the communication sleeve and the hollow pipe, the communication sleeve being provided with a second communication hole aligned with the first communication hole; a pressure transmission sleeve arranged between the sealing sleeve and the communication sleeve, the pressure transmission sleeve being provided with a pressure transmission hole; a delay medium and a sleeve arranged in the second annular space; a rupture disc assembly arranged in a side wall of the lower joint, a radial outer side of the rupture disc assembly being provided with a gap in communication with the second annular space; wherein the sleeve blocks the first communication hole and the second communication hole in an initial state, and the pressure transmission hole is closed, the delay opening toe sleeve is configured to make the rupture disc assembly break when a wellbore pressure rises to a test pressure value, and to open the delay opening toe sleeve through the sleeve and the delay medium.

This invention relates to the field of research on the operational characteristics of overpressure relief devices, and particularly to an experimental device for measuring the operational characteristics of overpressure relief devices under water hammer conditions. The device includes: a high-pressure air compressor, a frame, a piston accumulator, a quick-opening device, a high-pressure test assembly, and a high-frequency dynamic pressure sensor. This invention enables the measurement of operational characteristics under different pressure rise rate loads caused by water hammer phenomena on a test bench, providing an experimental platform for the research on the operational characteristics of overpressure relief devices under high pressure rise rates. The overall device is simple, quick, and stable. It effectively solves the problem of applying high pressure rise rate loads in current overpressure relief device operational characteristic measurement tests, overcomes the danger of using combustible gas explosions as pressure sources in existing operational characteristic measurement tests, and overcomes the shortcomings of existing test methods, such as long testing times, the need to calculate gas explosion pressure, and the difficulty in accurately controlling the pressure rise rate.

To provide a method for continuously casting a steel with which the natural opening ratio of a long nozzle can be improved by restraining the pressure rise in the long nozzle at the time of changing a ladle.SOLUTION: A molten steel flow rate control device (5) for controlling a flow rate of molten steel poured from a ladle (1) into a tundish (2) is closed, and a tip portion of a long nozzle (9) for pouring the molten steel from the ladle (1) into the tundish (2) is immersed in the molten steel in the tundish (2) with a filler (4) filled in a molten steel outflow hole (3) of the ladle (1).SELECTED DRAWING: Figure 4

This invention discloses a dynamic pressure-based method for testing and analyzing hammer shock waves in aero-engines, belonging to the field of aero-engine testing and structural strength design. The method first uses a surge-induced pressure method to generate hammer shock waves at the engine inlet. Based on the flow field characteristics of the air intake outlet section (AIP section) during surge, dynamic total pressure and static pressure measuring points are arranged in a combination of circumferential and radial directions. Pressure signals are synchronously recorded using a high-speed data acquisition system, and four characteristic parameters—surge overpressure, overpressure ratio, loading time, and pressure rise rate—are defined to quantitatively analyze the intensity, spatial distribution, and dynamic process of the hammer shock waves. This invention achieves rapid, accurate, and comprehensive characterization of the aerodynamic load of hammer shock waves, providing reliable input loads directly for the strength design of complex structures such as S-curve air intakes, thereby improving aircraft safety.

The invention provides an oil return pipe mechanism and a compressor. The oil return pipe mechanism comprises an oil return pipe, a supporting column, a spring, an activation valve plate and a fixed valve plate, and the oil return pipe is communicated with an upper support oil pool, a lower support oil pool and a bottom oil pool. The activation valve plate can slide and is initially attached to the fixed valve plate under the elastic force of the spring; when the pressure of the oil pool rises to a set value, the oil pushes and activates the valve plate to overcome the resistance of the spring, a corresponding oil return channel is opened, and redundant oil is guided back to the oil pool at the bottom. The upper support oil return pipe is opened preferentially to maintain the pressure of the backpressure oil groove, and the lower support oil return pipe is opened to further relieve pressure when the rotating speed is increased, so that self-adaptive oil pressure adjustment under different working conditions is achieved, dynamic disc backpressure is stabilized, friction loss is reduced, and operation reliability is improved. The scroll compressor is reasonable in structural layout, low in machining precision requirement, high in oil return efficiency and suitable for scroll compressors with various rotating speed frequencies.

The application provides a method for measuring flow of different size nozzles of a ventilator, in order to meet the test of complete performance curve of a small ventilator which has a relatively wide flow range, a small pressure rise and often needs to run in a small flow range, two nozzles with different throat diameters are used to test the performance curve of a ventilator respectively, then the test results of the two curves are considered together to fit a complete aerodynamic performance curve. The method can overcome the defects of the prior art, i.e. the single fixed diameter nozzle flow measuring device cannot meet the test requirements of the same ventilator with a wide flow range, and the test precision is difficult to meet the application requirements.

A computer-implemented method, when executed by data processing hardware, causes the data processing hardware to perform an operation. The operations include collecting lubrication data for a crankshaft start-up phase of a vehicle engine via a health monitoring application, determining a pressure rise difference in oil pressure between a measured pressure and an estimated pressure during the crankshaft start-up phase, determining, via the health monitoring application, whether the measured pressure deviates from the estimated pressure during the crankshaft start-up phase, and generating an alert based on the measured pressure deviating from the estimated pressure during the crankshaft start-up phase.

The utility model discloses a kind of rock breaking devices of self-adaptive ultrahigh pressure gas can be repeatedly automatically released and hole sealing, it is related to gas fracturing technical field, the device includes: fracturer, the both ends of fracturer are respectively provided with first end cap and second end cap, the inside of fracturer is provided with reaction cabin;Pressure-increasing mechanism, is inserted in first end cap, for by the combustion of biomass foam, make reaction cabin internal air pressure rise;Piston assembly, between fracturer and second end cap, for with second end cap cooperation, release gas, to realize rock breaking;Hole sealing mechanism, located at the outside of fracturer, for preventing gas to leak out, to maintain fracturing instantaneous hole sealing integrity;Second end cap, for making gas cluster to spray out.The utility model is balanced by using the gas pressure of reaction cabin and top pressure cabin inside fracturer and the special structure of piston, more efficient completion rock fracturing is realized without installing rupture disc in fracturer and frequently disassembling replacement condition.

The invention is suitable for the technical field of cleaning. The invention discloses an electric vehicle scrubbing tool which comprises an electric scrubbing head and a handle connected with the electric scrubbing head, a circulating water tank used for cleaning and collecting circulation is arranged on the handle, and the circulating water tank comprises a water tank body provided with a first cavity. The water tank body is provided with a water inlet and outlet mechanism enabling water to enter or be discharged out of the first cavity and a pressure relief mechanism communicating with the inside and the outside of the first cavity, the pressure relief mechanism comprises a second cavity and a third cavity which are independent of the first cavity, an air passing part is arranged between the third cavity and the second cavity, and the third cavity communicates with an exhaust nozzle communicating with the outside. The exhaust nozzle is arranged on the opposite side away from the water inlet and outlet mechanism. Due to the fact that the exhaust nozzle and the first cavity pass through the pressure relief mechanism provided with the second cavity and the third cavity, liquid can be prevented from entering the exhaust pipeline, and air exhaust is not affected. And the phenomenon of pressure rise generated in the water tank when the liquid is recycled in the using process is effectively released.

The impeller device comprises a hub, a plurality of axial flow blades, a plurality of mixed flow blades and a fixed impeller, and the hub can rotate with the axis as the center axis; the axial flow blades are installed on the periphery of the hub in a surrounding mode. Each flow mixing blade is mounted on the upper surface of the hub, and a plurality of flow mixing blades are arranged around the central shaft to form a flow mixing blade group; the fixed impeller is close to the upper surface of the hub and is coaxial with the hub, and the fixed impeller is arranged on the periphery of the mixed flow blade set so that corresponding flow channels can be formed among the mixed flow blades, the fixed impeller and the axial flow blades. According to the impeller device and the gas compressor, rotation of the mixed-flow blades provides remarkable pressure rise, rotation of the axial-flow blades provides large-flow loads, a wider efficient operation range, higher single-stage pressure rise and more stable flowing are achieved, the fixed impeller breaks off fluid with a strong rotation component (circumferential speed) to be straight, the fluid flows into a next-stage flow channel, and the flow of the fluid flows into the next-stage flow channel. A flow field is stabilized, and vibration and noise are reduced.

The present application provides an engine-driven compressor and a method for controlling the operation thereof, which can reduce the load at an early stage at the time of starting and can avoid the pressure rise at the time of overshoot occurrence at an early stage. A pressure adjusting valve provided by an intake adjusting device of a compressor main body, a first bypass flow path and a second bypass flow path which communicate a receiving container with a closed valve pressure chamber of the pressure adjusting valve, and a gas discharge flow path which discharges the closed valve pressure chamber, and a first electromagnetic valve of NO type provided in the first bypass flow path and a second electromagnetic valve of NC type provided in the second bypass flow path are provided, and a starting operation in which the first electromagnetic valve is not energized (open) is performed until a predetermined starting operation release condition is satisfied to start the engine. In a normal operation in which the intake adjusting device performs intake control, when the pressure in the receiving container becomes above an overshoot pressure, the second electromagnetic valve is energized (open) in a state in which the first electromagnetic valve is maintained in an energized (closed) state to perform an overshoot avoidance operation.

The application belongs to the technical field of control, and discloses a filling flow control method based on wine body weight detection and related equipment, wherein original weight information output by a weighing sensor is acquired, and bias slope information reflecting total weight growth rate of a tank and fluctuation amplitude information reflecting liquid shaking degree in the tank are acquired according to the information; on this basis, whether the tank exists a condition of pressure rise in the tank caused by partial blockage of an exhaust port by foam is judged according to the bias slope information and the fluctuation amplitude information; when it is judged that the condition exists, the filling flow is timely adjusted; thereby the precision and stability of high-speed filling of wine can be significantly improved.

The invention provides a method for generating performance degradation data of a train air braking system. The method comprises the following steps: on the basis of a brake system of a preset model, analyzing three stages of pressure rise, maximum pressure and pressure stability of pressure change of a brake cylinder, and extracting a plurality of typical fault modes; based on an extended random process model with non-monotonicity and independent incremental property, three stages of pressure change of a brake cylinder and multiple typical fault modes are combined, and linear, nonlinear or stepped performance degradation process modeling of the train air brake system is carried out; overlapping normal distribution random noise on a performance degradation track generated by modeling, simulating a control precision error of an actual braking system, and optimizing a performance degradation process model of the train air braking system; and utilizing the train air braking system performance degradation process model to generate train air braking system performance degradation data in batches.

The invention belongs to the technical field of new energy storage and transportation, and particularly discloses a hydrogen storage pressure container for a hydrogen refueling station and a transportation device for high-temperature performance detection, the hydrogen storage pressure container comprises a plurality of partition plates, a plurality of notches are formed in the bottoms of the partition plates, and the partition plates are uniformly and vertically distributed in a hydrogen storage tank; the area of the partition plate is matched with the size of the cross section of the hydrogen storage tank; the number of the partition plates is multiple, a plurality of notches are formed in the bottoms of the partition plates, the multiple partition plates are evenly and vertically distributed in the hydrogen storage tank, and the area of the partition plates is matched with the size of the cross section of the hydrogen storage tank. Through the triple anti-shaking design of zoning, stabilization and energy consumption of the buffer device, the pressure rise condition caused by the fact that liquid hydrogen impacts the inner wall of the tank body is effectively restrained, meanwhile, the fatigue damage risk of the inner wall of the hydrogen storage tank is reduced, in addition, the integrated temperature monitoring and pressure relief functions can deal with high-temperature and high-pressure hidden dangers in time, and the service life of the hydrogen storage tank is prolonged. And leakage or fracture accidents of the hydrogen storage tank are avoided.

The present application provides a cap unit capable of preventing pressure rise in a container body and easily and safely performing unpinning. The cap unit is mounted to a container body having an upper opening, and includes an outer cap covering an upper opening portion of the container body, an inner cap inserted into an inner side of the container body from the upper opening portion of the container body, and a waterproof packing located at an outer peripheral portion of the inner cap to seal between the inner side of the container body and the inner cap. The waterproof packing is composed of a ring-shaped elastic sealing member abutting against a protruding portion protruding from the inner side of the container body in a whole circumference. The waterproof packing is mounted to the inner cap in a state of fitting with a ring-shaped groove portion provided at the outer peripheral portion of the inner cap. A pressure release portion is provided at the outer peripheral portion of the inner cap, and releases pressure in the container body when the pressure in the container body rises to a predetermined pressure.

The application discloses a kind of multi-stage linkage explosion venting test methods combined with powdery combustion inhibitor, it is related to explosion-proof engineering and safety detection technical field;The method is by constructing with explosion venting device, ignition system, powdery inhibitor delivery system and pressure and optical sensor test cabin, uses PLC to realize ignition, pre-delivery, pressure relief trigger, synchronous inhibition and afterflame inhibition and so on multi-stage linkage control;And through pressure, temperature and flame sensor real-time acquisition of multi-dimensional data of explosion process;By before ignition, ignition instant and in the process of pressure relief with different doses of powdery inhibitor, the explosion suppression performance under different linkage strategies can be systematically evaluated;The application can simultaneously obtain peak pressure, pressure rise rate, flame propagation speed and re-burning conditions and other multi-parameters, realize the quantitative evaluation of the explosion suppression efficiency of powdery combustion inhibitor under multi-stage linkage explosion venting conditions, with the advantages of good data integrity, strong repeatability and suitable for standardization explosion-proof test method construction.

The invention provides a gas output device and a test system with the same, the gas output device comprises a gas container, a first flow controller, a second flow controller, a flowmeter and a switch valve, the gas container is connected with an inflation gas path, a test gas path and an exhaust gas path, the inflation gas path is used for connecting a gas source, and the test gas path is used for connecting a gas outlet. The testing gas circuit is used for being connected with the gas circuit element, the first flow controller is arranged on the inflation gas circuit, the second flow controller is arranged on the exhaust gas circuit, the flowmeter is arranged on the testing gas circuit, and the switch valve is arranged on the testing gas circuit. According to the gas output device in the embodiment of the invention, the application scene of stable pressure can be simulated, and the application scenes of pressure rise and pressure drop can also be simulated, so that the gas path element can be tested in various application scenes, and the performance evaluation result of the gas path element is more comprehensive.

This utility model provides a safety pressure relief mechanism for an odorizing pump, belonging to the technical field of odorizing pumps. It includes: a replenishing pump head, with a front pressure relief hole and a rear pressure relief hole on both sides of the replenishing pump head. A medium inlet is located at the middle of the front and rear pressure relief holes. A valve disc is provided at the top of the medium inlet, and a valve stem is slidably connected inside the medium inlet. The valve stem is slidably installed inside the valve disc, and a spring cover is installed at the top of the valve disc. A cylindrical compression spring is sleeved on the outside of the valve stem, and the top of the cylindrical compression spring is in contact with the spring cover. This safety pressure relief mechanism for the odorizing pump, with its front pressure relief hole, medium inlet, and rear pressure relief hole, allows pressure relief under normal conditions only through the front pressure relief hole. When the pressure rises above the set pressure, the hydraulic oil pushes the valve stem upward, compressing the cylindrical compression spring. As the valve stem moves a certain distance, it exposes the rear pressure relief hole, allowing hydraulic oil to drain from the rear pressure relief hole into the pump box.

The present application provides a method and apparatus for determining the rotational speed of a water pump in a fuel cell thermal management system, and a device. The method of the present application is applied to a fuel cell thermal management system (comprising a plurality of different subsystems, wherein the subsystems are provided with corresponding pipes and are in communication with each other by means of the pipes). The method comprises: determining, from among a plurality of different subsystems, a plurality of target subsystems comprising a water pump, wherein pipes respectively corresponding to the plurality of target subsystems form a circulation loop; determining pressure drop values of the target subsystems other than the water pump, an assumed rotational speed value of the water pump (any value within a preset rotational speed range), and a total flow rate value of a coolant in the circulation loop; determining a pressure rise value of the water pump on the basis of the assumed rotational speed value; and if the difference between the sum of the pressure drop values and the pressure rise value is within a first preset range, determining that the assumed rotational speed value is a rotational speed value required by the water pump under the total flow rate value. The method can solve the problem of high calibration costs caused by the need for a large amount of materials, devices and human resources during manual calibration.

This invention relates to the field of transformer protection technology, providing a high-protection oil-immersed transformer, comprising a transformer with a sealing shell fixedly connected to both the left and right sides of the top of the transformer. An elastic plate group is connected to the inner wall of the sealing shell group via a detection component. A piston is installed at the bottom of the elastic plate group, and a U-shaped rod is installed at the top of the sealing shell group and passes through it. The piston detects whether the pressure inside the chamber is high by pressing the elastic plate group to lift the U-shaped rod. Through real-time pressure monitoring and an active pressure relief structure, it achieves early detection and precise release of pressure anomalies, optimizes the sealing and pressure relief channels, avoids tank deformation and oil leakage, reduces safety hazards from the source, and improves operational safety. Simultaneously, it achieves linkage between the protection and cooling systems, automatically enhancing heat dissipation when pressure rises, rapidly cooling and suppressing pressure, improving circulation and heat exchange efficiency, delaying insulation aging, extending equipment lifespan, and adapting to high-load, high-protection scenarios.

The invention relates to the field of train maintenance, and provides a test method and system for a height adjusting valve of a train air spring, and electronic equipment, and the method comprises the steps: collecting the air pressure value of the air outlet end of a to-be-tested height adjusting valve in real time after the air of a specific air pressure is inputted into the air inlet end of the to-be-tested height adjusting valve; based on the air pressure value of the air outlet end, the air pressure rising rate of the air outlet end is determined; and when the air pressure rising rate is lower than a set rising threshold value, determining that the height adjusting valve to be measured has a fault. The method and the device are used for overcoming the defect that the quality of the height adjusting valve cannot be guaranteed due to the fact that the height adjusting valve cannot be comprehensively detected in the prior art, the quality of the height adjusting valve can be detected from multiple aspects, and the safety of a train in the running process is improved.

The utility model relates to the technical field of accent light lamp holder production, and provides a detection device of an accent light lamp holder, which comprises a detection box and a liquid discharge pipe fixedly communicated with the detection box, the top of the detection box is provided with a mounting plate, the inner wall of the mounting plate is fixedly provided with a lamp tube, and the inner wall of the lamp tube is provided with a lamp tube. Two lifting assemblies are symmetrically arranged on the left side and the right side of the detection box. According to the utility model, the air cylinder is used for driving the piston to transversely reciprocate in the pressure guide cylinder, and cooperative work of the one-way flow suction pipe, the one-way flow drainage pipe and the one-way monitoring pipe is matched, so that the detection method can accurately monitor the air pressure change in the accent light holder, and the leakage problem can be found in time; if yes, the lamp cap is good in sealing performance; on the contrary, if the air pressure does not obviously rise or bubbles appear, leakage is prompted, so that the detection accuracy of the accent light holder is improved, the detection accuracy and efficiency of the accent light holder are improved, the leakage detection risk is effectively reduced, and the quality reliability of the accent light holder is ensured.

The application relates to the technical field of aerosol can detection, in particular to a pressure loading rate control method for detecting the pressure resistance strength of an aerosol can and related equipment, based on actual working conditions of different types of aerosol cans, pressure change data of multiple transportation scenes is collected, a multi-stage pressure loading rate curve containing "smooth pressure rise-instantaneous impact-pressure maintaining-pressure gradient pressure relief" is preset, the can body pressure and deformation data of the aerosol can on a target detection station are acquired, the first pressure loading rate is adjusted after comparison and analysis, the second pressure loading rate is adaptively matched in combination with aerosol can specification information, a comprehensive pressure loading rate is obtained by fusing the two pressure loading rates, and the work station detection device is controlled to detect batches of aerosol cans according to the comprehensive pressure loading rate, so that the actual scene can be simulated more accurately, and the detection requirements of aerosol cans of different specifications can be adapted.