3412 results about "Steel cylinder" patented technology

The invention relates to the technical field of forming, assembling and welding of a large-scale supporting cylinder on a lightering platform on the sea, and provides a pre-welding shaping auxiliary mold of the large-scale steel cylinder and a welding method. The shaping mold is composed of a welding platform, a fixing column, a slide way, an outer lead screw, an outer arc locating block, an inner ejector rod and the like. The outer circle of the cylinder is shaped through an adjusted rigid restrained position; shaping accuracy of the cylinder is ensured through the lead screw, a seam width positioning wedge, a process support and the like; a welding process of the cylinder is made; tack welding is firstly conducted on a longitudinal seam, then the longitudinal seam is integrally welded, and the welding sequence is that welding is conducted from the middle towards the two ends at intervals; sectionalized barrel bodies are welded in an assembled mode and through an X-type double-face groove, the butt-jointing groove faces upwards, the inner side of the cylinder is welded firstly when welding is started, carbon arc air gouging back gouging is conducted on a welding seam in the outer side after the cylinder is turned over, and then the outer side of an annular welding seam is welded. Slight welding deformation is achieved through adjustment of a rigidity restraint positioning block and changes of the welding sequence, and requirements for welding accuracy of the cylinder are met.

A constructing method for a concrete cylinder of a construction steel bar of a high-rise steel structure adopts a constructing method of supporting inside and climbing outside. The outside of the cylinder adopts hydraulic mutual-climbing adhesive lifting scaffold creeping formwork system (100), and also has an outside wallboard mechanical formwork erection function and an outer frame protection function. For the inside of the cylinder, except that an appropriate structure is left for later processing according to a schedule requirement, beam walls all adopt a steel cylinder support to perform formwork erection, so as to greatly reduce the workload of repeatedly mounting / dismantling the scaffold and the formwork at a high place. The scaffold itself carries the formwork erection system, so formwork erection and formwork removal can be mechanized, thereby reducing the risk of formwork erection and formwork removal at a high place

The invention provides a large-scale passive nuclear plant reactor core catcher with bottom water injection and external cooling. The catcher comprises a reactor cavity coating the lower middle part of a reactor pressure vessel, and a reactor cavity concrete soleplate is formed at the bottom of the reactor cavity; a refractory layer is formed on the side surface of the reactor cavity and the bottom of the reactor cavity concrete soleplate; a steel cylinder is sleeved outside the refractory layer; an external cooling passage is formed at the bottom of the steel cylinder, and a cooling passage inlet and a cooling passage outlet are respectively formed at the two outward-extending ends of the external cooling passage; and dozens of nozzles are fixed at the bottom of the steel cylinder, and the upper ends of the nozzles extend into the reactor cavity concrete soleplate while the lower ends of the nozzles extend into the external cooling passage. According to the invention, the dilution and the temperature reduction of a melt are implemented through the melting of concrete by adopting the reactor cavity concrete soleplate as a sacrificial material. A reactor core melt is collected in the refractory layer after the reactor cavity concrete soleplate is molten through, so that the security and the reliability of a nuclear plant are further improved.

The invention discloses a dynamic and static combined loading rock test machine and test method used for multiphase coupling. The machine comprises a visual confining pressure loading chamber module, air pressure control modules, a dynamic loading module and constant volume modules; and the loading chamber of the visual confining pressure loading chamber module is a steel cylinder structure with a square outside and a circular inside, three surfaces of the loading chamber has windows, high borosilicate glass is embedded in every window to realize the visualization of the test process, an opening in one surface of the loading chamber is provided with a rear door which is convenient to replace and take a test piece, and various monitoring devices are arranged in the loading chamber and are led out through sensor lead wires of a baseboard to realize real-time monitoring of all physical-mechanical parameters of the test piece in the test process. The machine has the advantages of small size, simple structure, convenience in dismounting, and realization of accurate, quantitative and visual monitoring of the adsorption-desorption characteristic of a coal rock standard test piece in different load forms and coupling form and the permeability and the damage dilatancy process of gas-containing coal body in different loading stages.

The invention relates to the technical field of steel cylinder girth welding, and specifically relates to an automatic steel cylinder girth welding device. The automatic steel cylinder girth welding device comprises an operation table, wherein an opposite driving assembly is arranged at the bottom of the operation table; the opposite driving assembly comprises two movable bottom plates; a movablenotch used for allowing each movable bottom plate to move is formed in the operation table; a rotary table is arranged at the top of each movable bottom plate; a left side rotating assembly and a right side auxiliary rotating assembly are arranged on the two rotary tables correspondingly; clamping jaw assemblies are arranged at the adjacent ends of the left side positioning rotating assembly and the right side rotating assembly correspondingly; lifting adjusting assemblies are arranged above the left side rotating assembly and the right side auxiliary rotating assembly correspondingly; a vertical support is arranged between the two clamping jaw assemblies; and a welding gun capable of lifting is arranged on the vertical support. According to the device, the height of each steel cylinder needing to be welded can be adjusted correspondingly, butt joint is automatically carried out, the height of the welding gun can be automatically adjusted, and the welding precision is improved.

The invention relates to a 3D (Three-dimensional) printing method of an engineering structure, and belongs to the technical field of engineering. The method comprises the following steps of: manufacturing a framework such as reinforcing steel bars, girders and steel cylinders of the engineering structure firstly according to a three-dimensional model of the engineering structure; and then, spraying concrete on the surface of the framework or inside the framework by a 3D printer layer by layer, wherein the whole printing process is precisely controlled by a computer system, so that the three-dimensional engineering structure is quickly manufactured. The method provided by the invention has the beneficial effects that the method overcomes the defect that conventional engineering structure manufacturing method requires a lot of templates, manpower and working hours, and the manufacturing precision and quality often difficultly satisfy the demand. The method is a major innovation and has important meaning for application of 3D printing in the engineering field.

The invention belongs to the field of mechanical processing equipment, and in particular discloses stainless steel cylinder polishing wire-drawing treatment equipment which comprises a bottom plate, an adjusting module, a driving motor, an outer cylinder grinding disc, an inner cylinder grinding disc, a centering support and a connecting rotating shaft, wherein the bottom plate is placed on the ground; an adjusting module is arranged on the upper surface of the bottom plate; the driving motor is mounted on the adjusting module; the inclination angle of an axis of the driving motor can be adjusted through the adjusting module; and the outer cylinder grinding disc, the inner cylinder grinding disc and the centering support are detachably mounted on the connecting rotating shaft coaxially. By adopting the equipment, automatic shrinkage adjustment on a polishing wire-drawing radius is achieved under the centrifugal action of the outer cylinder grinding disc and the inner cylinder grinding disc, then operation of polishing and wire-drawing is completed at one time, and the generation efficiency is improved.

The invention relates to a method for constructing a bridge, in particular to the method for constructing a road swivel bridge and a railway swivel bridge by using a turnplate spherical hinge, which aims to solve the problems of the complex process, inconvenient construction, high requirements on construction sites, and the like of the conventional swivel bridge construction. The method specifically comprises the following steps of: machining the turnplate spherical hinge; constructing a lower pile cap and mounting a lower spherical hinge and an endless track, wherein the concrete of the lower pile cap is poured in three stages; constructing an upper pile cap and mounting an upper spherical hinge and a support steel cylinder; and after the upper pile cap and the lower pile cap are swiveled in place under the action of the turnplate spherical hinge, pouring rear sealed concrete between the upper pile cap and the lower pile cap. The method has the advantages of the capacity of changing overhead barrier operation into operation on the coast or near the ground, safe and reliable construction, simple and convenient operation, fast implementation and construction cost reduction, is suitable for both straight bridges and curved bridges, and compared with the conventional construction methods, also has the advantages of shortening construction period, saving a part of big construction machinery and labor force and greatly saving construction cost.

A sample pump system for metering the amount of sample taken from a pressurized fluid process such as a natural gas pipeline or the like, the sample pump system designed for immersion, directly or indirectly, into the pressurized fluid stream so that the sampling is taken at the prevailing pressure and temperature of the fluid stream. A spot sample cylinder device is further provided which employs a method of collection wherein the initial cylinder volume of the collection vessel or sampling cylinder is zero. The spot sample cylinder is inserted into the pressurized gas (or fluid) source, said sample cylinder employing a piston or moveable end configured such that purging of the cylinder sample cavity is not required, since the sample cavity volume is essentially eliminated prior to sampling by the location of the piston within the cavity, the cavity expanding upon sampling via piston movement within the cavity.

The invention belongs to the field of on-line monitoring technology of insulative condition of SF6 (sulfur hexafluoride) gas insulated electric equipment, and in particular relates to a gas insulated electric equipment partial discharge multi-source joint detection method. The detection method mainly comprises the steps of preparing a test, cleaning a stainless steel cylinder, filling with SF6 gas, performing an industrial frequency AC SF6 gas PD test, pulse current detection, ultrahigh frequency sensor detection, fluorescent optical fiber sensor detection, discharge gas collection and component detection and the like. The detection method provided by the invention is simple in operation, liable to promote, and provides references for multi-dimensional information joint detection method. The detection method is widely applied to SF6 gas insulated electric equipment partial discharge multi-sensor joint detection under the condition of power frequency, and provides a simple test scheme for multi-dimensional information extraction of PD (Potential Difference) decomposition characteristics and a decomposition theory.

The invention relates to a large-diameter hydrogen storage alloy tank and a manufacturing method thereof. The large-diameter hydrogen storage alloy tank comprises a steel bottle body, a heat exchanger, annular porous mass transfer modules, a gas-guide tube, a metal filter disc and a high-pressure high vacuum valve, wherein the outer diameter of the steel bottle body is phi 159-600mm and the length is 1500-5100mm; the heat exchanger is a copper or stainless steel seamless tube and is bent into multi-channel pipelines in parallel with the axis of the steel cylinder, wound into an annular structure concentric with the steel cylinder cross section and then placed in the steel cylinder; the annular porous mass transfer modules are of an aluminum or copper porous or fibre structure which is composed of multiple annular structures with different sizes and are respectively placed between the inner wall of the steel cylinder body and the heat exchanger, among different diameter rings of the heat exchanger and into an annular space between the inner layer heat exchanger and the gas-guiding tube; the hydrogen storage alloy powder can be filled in the annular porous mass transfer modules; the gas-guiding tube is placed at the central axis of the steel cylinder; and the metal filter is connected with the steel cylinder body through braze welding. The invention has the advantages of simple and convenient production process, good consistency, being convenient for mechanization operation and realizing mass production and the like.

The invention belongs to the technical field of plant growing box control, and discloses a plant growing box control system and a control method thereof. The plant growing box control system comprises a cultivation chamber and an environment control chamber. The cultivation chamber is provided with a cultivation frame, the bottom of each layer of the cultivation frame is provided with a water groove, and the water groove at each layer is internally provided with a planting plate. The cultivation chamber is internally provided with an in-box temperature and humidity sensor and a carbon dioxide concentration sensor. The environment control chamber is internally provided with a constant temperature and constant humidity machine and a carbon dioxide steel cylinder. A supplying pipeline of the carbon dioxide steel cylinder is provided with a carbon dioxide steel solenoid valve. The top of each layer of the cultivation frame is provided with an LED lamp. The bottom of the cultivation chamber is provided with a nutrient solution water box and a circulating pump. The environment control chamber is internally provided with a general control unit, the in-box temperature and humidity sensor and the carbon dioxide concentration sensor are respectively and electrically connected with the general control unit which is electrically connected with the control end of the carbon dioxide solenoid valve, and the general control unit is used for controlling the operating state of the constant temperature and constant humidity machine, the LED lamps and the circuiting pump.

The invention relates to a method for pairing cylinders, in particular to a method for pairing steel cylinders. The invention solves the technical problems of large working difficulty, low efficiency, high cost, poor safety, removal of curve ruler bend and smoothening of welding spots after the pairing is finished, and the like. In order to solve the technical problems, the invention adopts the technical scheme that the method comprises the following steps: by using a driving roller rack (5) and a driven roller rack (6) as a support body and a rotating power source of a paired cylinder section (or first cylinder section) (1), pairing special roller racks (3, 4) as a support body of a cylinder section to be paired; adjusting a staggered joint between cylinder section connectors and straightness of a bus by adjusting the positions of rollers of the paired special roller racks; and when the clearance, alignment tolerance, flatness and the like of the connectors are adjusted to accord with the requirement, tack-welding the connectors, and later finishing the back sealing weld of the connectors so as to finish a pairing process of one cylinder section. The structure of the steel cylinders is shown as the picture.

The present invention provides a testing system for researching flow boiling heat transfer character and pressure drop character of cryogenic fluid, which belong to the technical field of cryogenic engineering and cryogenic technique. The testing system comprises a cryogenic self-pressurized storage tank, a nitrogen steel cylinder, a liquid nitrogen steel cylinder, a wide-mouth dewar, a cooling coil, an electric heating device, heat exchange equipment to be tested, a test vacuum dewar, a temperature transducer, a pressure transducer, a differential pressure transducer, a vaporizer and a gas flowmeter. The cryogenic self-pressurized storage tank is used as a pressurization device in the testing system and cryogenic fluid is outputted under a certain pressure, which can simplify the testingsystem. The heat exchange equipment to be tested is arranged in the test vacuum dewar for reducing heat loss in the testing. A vacuum valve is arranged in the test vacuum dewar and can be connected to outer high pressure nitrogen for blowing the inner part of the test vacuum dewar when necessary, which can improve the system safety. The testing system has the advantages of less land occupation, small investment, simple control, easy operation, safe, reliable and applicability to various cryogenic fluids including flammable and explosive cryogenic fluids.

The invention relates to a manual simulation plant climate box, which comprises a box body and an equipment room, wherein the equipment room is located at the back side of the box body; the box body is constituted of a top cover, a base plate and a side plate; an electrical box, a refrigerating unit, a humidifier and a carbon dioxide steel cylinder are set in the equipment room; the box body is also provided with a camera, an ultraviolet ray lamp tube, a sensor unit, a plant cultivation frame and an air processor; an air flow channel is set between a top plate and the top cover and the air flow channel is shaped like a long strip; the top plate is provided with an inserted buckle; an inserted-type light-supplementing lamp bar is mounted in the inserted buckle; and a top plate at the outskirt of the inserted-type light-supplementing lamp bar is provided with a ventilation hole. The advantages are that comprehensive simulation to natural environment or specified environment is performed; each of factor is controlled separately and also coordinated as a whole; specified light strength, temperature, humidity and carbon dioxide concentration can be acquired; the best growth environment of plants in each stage inside the box body can be simulated; and comparative test can be performed by controlling certain environmental factors.

The invention discloses an on-line testing method for studying fuel cell stack assembly force and sealing. The on-line testing method for studying the fuel cell stack assembly force and the sealing is characterized by comprising the following steps: assembling fuel cell stacks according to fuel cell assembly methods; placing the assembled fuel cell stacks on a liquid crystal digital display universal tester, supplying pressure, and keeping pressure of the liquid crystal digital display universal tester to be constant; plugging gas ports in one upper end plate shell cover with plugs, and connecting the other upper end plate shell cover with a t-branch pipe to carry out a gas tightness test; opening a high pressure nitrogen steel cylinder, adjusting a reducing valve till that a precision pressure gauge displays a needed test value and remains stable, and observing changing conditions of the precision pressure gauge in preset time; and when the test is finished and if a leakage case does not exist, separating a testing device from the fuel cell stacks, screwing nuts by using a torque wrench, and stopping till that a liquid crystal display panel displays that the pressure is zero. According to the on-line testing method for studying the fuel cell stack assembly force and the sealing, whether the gas leakage of the fuel cell stacks occurs can be monitored in the process of assembly, correction can be carried out in time, loss caused by fuel cell stack disassembly is effectively reduced, and therefore work efficiency is improved.

A pressurized gas containing system has a cowling and mounting ring which supports a valve and regulator on a cylinder containing gas under pressure.

The invention relates to process for repairing inner surface damages in an outer cylinder and an inner cylinder of a mine hydraulic support column. The repair process comprises the following steps of: lathing off the cylinder bottom of a cylinder on a lathe; grinding off a joint and an oil pipe; lathing both ends of the cylinder flat with an upper lathe, chamfering an external angle of 15 DEG, and repairing a frame opening; boring an inner bore; heating a place to be embedded with the cylinder in the bored inner bore of the cylinder to a temperature between 580 and 620 DEG C; discharging the cylinder, putting the cylinder on a disk tool on a platform, quickly pressing a stainless steel cylinder into the inner bore of the cylinder through a spinning machine, and simultaneously spinning to make the stainless steel cylinder and the inner wall of the cylinder complete close interference fit; immersing the cylinder with the stainless steel cylinder into water for quenching when the cylinder temperature is between 450 and 500 DEG C, and rolling the inner bore with an upper deep hole boring machineafter cooling the cylinder with the stainless steel cylinder to a normal temperature; grinding the inner bore with a grinder; repairing a cylinder opening inner chamfer angle of 20 DEG with the upper lathe; and welding the cylinder bottom by the conventional process, assembling the cylinder, and testing pressure to complete the process. The repair process can repair the inner surface damages in the outer cylinder and the inner cylinder of the mine hydraulic support column to reuse the outer cylinder and the inner cylinder so as to avoid waste, and has the advantages of reliability, easy operation and stable product quality.

The invention discloses an experimental device for simulating the generation and the exploition of benthonic combustible ice and an application method thereof. The experimental device comprises a stainless steel cylinder body, a middle penetration plate, a bottom rubber airbag, a top sealing device and an external frame, wherein the cylinder body is divided into three parts by the middle penetration plate of the whole device, i.e., a simulated seawater layer, a sedimentation layer (hydrate layer) and a free air layer from top to bottom; three windows are respectively designed in the front surface and the rear surface of the cylinder body, thereby being convenient for observation of phenomena during the generation and the decomposition of hydrates; the top sealing device works in a combined mechanical sealing mode, so that the sealing effect of the device can be guaranteed; the pore ratio of a combustible ice storage layer can be controlled according to experimental designs; and a magnetizer-induced heating temperature controller is wrapped around the combustible ice storage layer, so that the temperature can be accurately controlled so as to realize the heating of the storage layer. According to the experimental device, the conventional hydrate synthesis and decomposition experiment can be carried out; meanwhile, the large-scale simulation of the benthonic hydrates can be realized; and particularly, the phenomena in synthesis and exploition processes can be recorded by a high-speed CCD (Charge Coupled Device) camera during the generation and the exploition of seepage-type hydrates, so that the simulation visualization is realized.

The invention relates to an inflation pressure-controllable packaging system for manufacturing organic electroluminescent devices. The system comprises a gas steel cylinder, a gas purifier, an inlet valve, a vacuum meter, a bleeder valve, a gas bleeding system and a sample sealing device which are connected by gas pipes. A light source is above the sample sealing device. The sample sealing device comprises a vacuum support, an upper sealing ring and a lower sealing ring on the vacuum support, and an enclosed vacuum cavity, wherein the vacuum support comprises an inlet pipe and a gas bleeding pipe, and an upper press plate and a lower press plate press tightly on an upper transparent cover plate and a lower transparent cover plate to form the vacuum cavity. A substrate, with an organic luminescent layer, and a glass sealed back cover are disposed in the lower part and the upper part of the vacuum cavity. A movable magnet is stuck to the back cover, and a layer of a sealant is placed on a rim of the back cover. An integral body of the substrate and the back cover is attracted by an upper magnet above the upper transparent cover plate and a lower magnet corresponding to the upper magnet, wherein the lower magnet is below the lower transparent cover plate with a certain distance therebetween. The system uses an external light source, which is easy to replace. A plurality of types of sealants can be used for sealing.

The invention discloses a high temperature carbonization pyrolytic cracking device and cracking method, which is characterized by the following: comprising cracking tank, horse boiling furnace and temperature controller; loading sample into the cracking tank; closing; placing the cracking tank into horse boiling furnace; adjusting and controlling temperature with the temperature controller; connecting the cracking tank inert gas steel cylinder and collecting flask with absorbing dissolvent through air inlet pipe and air outlet pipe. This invention possesses simple structure, big loading sample quantity, good repeatability and strong operating performance, which provides probable analysis approach for illuminating smoke gas flavor matter in tobacco absorbing course.

The invention relates to an online analysis method for sulfur isotope of hydrogen sulfide gas in natural gas. The method comprises the steps of collecting a natural gas sample; heating oxidation furnace of an elemental analyzer to 1,020 DEG C; heating a chromatographic column box to 50 DEG C; introducing reference gas into a stable isotope ratio mass spectrometer, adjusting center magnetic field of the peak with mass / charge ratio of 66, and storing the magnetic field value; connecting a steel cylinder filled with the natural gas sample with a sampling valve, placing in a ventilating hood, and switching on the ventilating hood; taking the natural gas sample with an airtight sample injector; injecting the natural gas sample into a sample inlet; introducing the natural gas sample into a high-temperature oxidation tube with carrier gas, to be oxidized into carbon dioxide, water and sulfur dioxide gas, carrying the mixed gas with carrier gas through a dewatering tube for water removal; separating the dewatered mixed gas with a gas chromatographic column, sequentially introducing into a stable isotope ratio mass spectrometer through a continuous flow interface, measuring sulfur isotope composition, and generating spectrogram.

A multi-layer steel cylinder head gasket includes a spacer layer between two beaded mirror image outer layers. A wire ring stopper extends about the boundary of a combustion opening in the stopper layer; the ring is radially spaced from the mirror image beaded outer layer extremities. The ring is covered by a flange folded thereover; the flange extends radially outwardly to overlie the boundary edge of the stopper layer at the combustion opening. The stopper ring pre-stresses the gasket interface at the combustion opening upon securement of a cylinder head to an engine block. Because the stopper ring is spaced from the beaded outer layers, the stresses imposed on the wire ring are decoupled from the beaded outer layers, and lower incidences of bead cracking are realized. In addition, the wire ring diameter is greater than the thickness of the stopper layer, reducing unnecessary compression loads on the stopper layer.

The invention provides an automatic calibration system for a gas sensor. The automatic calibration system comprises a steel cylinder, a gas mass flow controller, a high- and low-temperature alternate experimental box, a sensor gas hood, a sensor data acquisition circuit and an industrial computer, wherein the steel cylinder, the gas mass flow controller and the sensor gas hood constitute an air distribution system; the industrial computer is connected with the high- and low-temperature alternate experimental box to produce different constant temperatures; the industrial computer is connected with the gas mass flow controller to generate set gas concentrations at different constant temperatures; and the industrial computer is connected with the sensor data acquisition circuit to acquire gas concentration response values of the gas sensor at different constant temperatures and transmit sensor calibration data to the gas sensor. The automatic calibration system has the advantages of scientific design, convenience for using, complete functions, automatic temperature control capability, automatic dynamic air distribution capability, automatic data acquisition capability, automatic data handling capability, high working efficiency and high reliability.

The invention discloses a high-speed magnetic suspension electric main shaft for a five-freedom numerically-controlled machine tool. The electric main shaft comprises a rotating shaft (1) installed on a steel cylinder, a two-freedom magnetic suspension asynchronous motor and two three-freedom alternating and direct current hybrid magnetic bearings, wherein the two-freedom magnetic suspension asynchronous motor is installed on the rotating shaft (1) through a two-freedom magnetic suspension asynchronous motor rotor (18); the two three-freedom alternating and direct current hybrid magnetic bearings are symmetrically installed on the rotating shaft (1) on the two sides of the two-freedom magnetic suspension asynchronous motor through three-freedom alternating and direct current hybrid magnetic bearing rotors (12); and any one of the three-freedom alternating and direct current hybrid magnetic bearings is combined with the two-freedom magnetic suspension asynchronous motor to form a five-freedom magnetic suspension asynchronous motor. The high-speed magnetic suspension electric main shaft has the beneficial effects that no lubrication is required, the axial space is reduced, the structure is symmetrical, the five-freedom magnetic suspension asynchronous motor can be flexibly formed, the non-failure operation time can be greatly improved on the premise of high-speed operation, and the energy loss is reduced.

The invention discloses a experiment device for initial laws of tectonic coal gas desorption. A high-purity gas steel cylinder is connected with a port of a three-way valve through a stop valve. A port of the three-way valve is connected with a port of a four-way valve through the stop valve. The four-way valve is connected with the stop valve, a vacuum gauge, a vavuum pump, a large-size measuring cylinder and a pressure gage. The three-way valve is connected with the four-way valve through the stop valve directly. The pressure gage is connected with a coal sample tank. The coal sample tank is arranged in a constant-temperature water-bath device. The bottom of the coal sample tank is connected with the constant-temperature water-bath device. A port of the four-way valve is connected with a gas mass flow meter through a spherical valve. One end of the gas mass flow meter is connected with a computer, and the other end of the gas mass flow meter is connected with a desorption instrument. Through the combination of a sensor and a computer, rapid acquisition of gas desorption speed data is achieved. The gas desorption instrument can measure the gas desorption amount synchronously, so that the reaction time of experiment data acquisition is shortened and the data acquisition precision is raised. The experiment device is advantaged by less error and large data acquisition amount.

The present invention is directed to a refrigerant filling apparatus of the refrigerating and air conditioning apparatus that can automatically finish filling of a refrigerant after filling to an appropriate amount, without a need to install an extra valve except for a valve provided at a refrigerant cylinder, in between the refrigerating and air conditioning apparatus and the refrigerant cylinder, which is necessary for filling the refrigerant. The refrigerant filling apparatus of the refrigerating and air conditioning apparatus, which includes: a refrigerant circuit having a compressor 1, a four-way valve 2, an indoor side heat exchanger 3, a pressure reducing solenoid valve 4, an outdoor side heat exchanger 3, and an accumulator 6; a refrigerant cylinder 10 connected to the refrigerant circuit; a control unit that controls filling of the refrigerant from the refrigerant cylinder 10 to the refrigerant circuit and decides refrigerant filling modes; and a display unit installed to the control unit and displays the refrigerant filling modes.

The invention relates to welding devices, in particular to a vertical multi-claw welding machine. The vertical multi-claw welding machine comprises a frame, a first power member, a second power member, a third power member, a spindle, a hollow shaft, a worm wheel, a parallelogram link mechanism, welding torches, a rotating plate and an intermittent feeding unit. The first power member drives the spindle to move downwards to firmly fix a workpiece by being matched with a fixing member and a clamping groove. The second power member transmits the workpiece to the hollow shaft, a worm and the worm wheel sequentially, so that the parallelogram link mechanism swings to adjust the distance between the welding torches and portions to be welded, of a steel cylinder. The third power member drives a second bevel gear to move downwards at the same time. A first bevel gear performs circumferential rotational displacement and then drives a plurality of welding torches to rotate circumferentially and move a certain distance, the welding of a section of the circumferential portion to be welded, of the steel cylinder is completed at one time, and the intermittent feeding unit drives the rotating plate to rotate intermittently to feed, so that automatic feeding and one-time welding are achieved actually. The vertical multi-claw welding machine is high in working efficiency, safe, reliable and easy to operate.

The invention discloses a refrigerant filling machine, and provides a refrigerant filling machine, which is time-saving and labor-saving in operation, saves manpower and material resources, and integrates multiple functions, and a method for carrying out vacuum-pumping, leakage detecting and refrigerant filling by utilizing the refrigerant filling machine. The refrigerant filling machine solves the technical problems that manual independent operation is needed, an operation process is complex, time and labor are wasted, misoperation is extremely liable to generate, certain potential safety hazards exist and the like in the prior art. The refrigerant filling machine comprises a high-pressure pipeline and a low-pressure pipeline which are correspondingly connected to a high-pressure end and a low-pressure end of a refrigerating system, wherein the other end of the high-pressure pipeline and the other end of the low-pressure pipeline are connected to one end of a valve body pipeline in parallel correspondingly; the other end of the valve body pipeline is connected with a vacuum pipeline and a refrigerant pipeline in parallel; the other end of the vacuum pipeline is connected with a vacuum pump; the other end of the refrigerant pipeline is connected with a refrigerant storage steel cylinder; the refrigerant storage steel cylinder is placed on an electronic scale; solenoid valves capable of controlling on-off of corresponding pipelines are arranged on the pipelines; and the solenoid valves and the electronic scale are connected onto a control system.

The invention relates to a device for using ultrasonic wave to detect the manufacture defect of objects, in particular to a steel cylinder ultrasonic flaw-detecting machine which can also be used for the flaw detection of a steel tube; the device of the invention comprises an electrical control device, a front feeding device, a rear material-moving device, a steel cylinder conveying mechanism, a flaw detection host, a flaw detector, a mark printing mechanism and a water circulation system, wherein, at least three flaw detection hosts are arranged on the steel cylinder conveying mechanism, a driving device of the flaw detection host drives the detected steel cylinder to forward in a screw mode and coupling agents are filled between a probe and the detected steel cylinder. As the flaw detection is carried out by a mode of immerging the ultrasonic probe and the detected steel cylinder into the coupling agent, the flaw-detecting machine of the invention saves the procedures of plugging the mouth of the cylinder and pulling out the stopper, can carry out detection to the steel cylinder continuously and stably, improve the detection efficiency effectively and realize the automatic ultrasonic detection.