119 results about "Fluid loading" patented technology

The invention discloses a fluid loading and unloading arm dynamic flange automatic docking method based on image visual servo, which comprises the following steps: initializing the tail end position of a loading and unloading arm, and controlling the loading and unloading arm to move until complete image information of a flange to be docked can be acquired; the method comprises the following steps: acquiring an image of a flange to be butted, and extracting initial candidate circles with circle features in the image by adopting a Hough circle detection algorithm; through an RANSAC (Random Sample Consensus) algorithm, performing refined fitting to obtain a refined candidate circle; extracting the center coordinates of the positioning holes from the refined candidate circle; according to the circle center coordinate of the positioning hole and the butt joint state coordinate position, calculating the current time deviation; taking the minimum deviation as a target, solving an angular motion angular velocity instruction of each joint of the loading and unloading arm, driving each joint of the loading and unloading arm to adjust the pose until the deviation converges, and completing the butt joint of the flange at the tail end of the loading and unloading arm and the to-be-butt-jointed flange. The method is suitable for millimeter-level accurate butt joint and control of loading and unloading arm flanges in the dynamic marine environment, and the operation efficiency and safety in the complex environment are remarkably improved.

The utility model discloses a special rotary joint for an ultralow-temperature fluid loading and unloading arm, and relates to the technical field of rotary joints. The connector comprises a connector body, a first flange plate is arranged at the top of the connector body, a second flange plate is arranged above the first flange plate, a plurality of mounting holes are formed in the first flange plate and the second flange plate, and mounting assemblies are arranged in the mounting holes in the second flange plate. And a driving mechanism is arranged in an inner cavity of the mounting assembly. When dismounting is needed, the driving mechanism is rotated reversely, thrust to the balls is reduced, the mounting holes in the first flange plate are obliquely arranged, the balls can retract, and then the tight connection state of the first flange plate and the second flange plate is relieved, so that tedious operation of traditional flange connection is avoided, and the dismounting efficiency is improved. The connecting and detaching efficiency of the loading and unloading arm and the external pipe is improved, time and labor cost is reduced, and convenience and reliability of the loading and unloading system are improved.

A fluid loading module, a fluid loading system, a fluid loading method, and a gene sequencing device. The fluid loading module is configured to load fluid to a solid-phase slide. The solid-phase slide comprises a plurality of openings. The fluid loading system comprises a manifold block and a valve device. A first flow channel is disposed in the manifold block, and a first fluid inlet, a second fluid inlet, a first flow channel outlet and a plurality of slide interfaces are provided on the manifold block, both the first fluid inlet and the first flow channel outlet being connected to the first flow channel. Each slide interface is provided with a first hole, the first hole of each slide interface being connected to one opening of the solid-phase slide. The valve device comprises a plurality of first valves. Each first valve is connected to the first flow channel and the first hole of one slide interface, such that the first fluid inlet is in communication with a corresponding slide interface by means of one first valve. The second fluid inlet is in communication with another slide interface.

The invention discloses a four-connecting-rod fluid loading and unloading arm, which belongs to the technical field of port and wharf fluid loading and unloading equipment, comprises a stand column, an inner arm pipe, an outer arm pipe and a rotary joint, and is characterized in that the inner arm pipe is connected with an inner arm counterweight beam, and a first counterweight block is mounted on the inner arm counterweight beam; the outer arm pipe is connected with the outer arm balance weight beam, the inner side of the inner arm balance weight beam is rotationally connected with one end of the balance weight plate, and the other end of the balance weight plate is connected with the outer arm balance weight beam through the connecting rod. The rotary joint comprises an outer ring cylinder, an inner ring cylinder, a second frameless torque motor and a sealing mechanism; the outer ring cylinder sleeves the outer side of the inner ring cylinder; a second frameless torque motor is fixedly installed in the annular containing groove, and the inner ring of the second frameless torque motor is connected with the outer wall of the inner ring cylinder. And telescopic pipe mechanisms are respectively arranged in pipe cavities of the upright post, the inner arm pipe and the outer arm pipe. Compared with the prior art, the inner pipe arm and the outer pipe arm are prevented from being shrunk and deformed when encountering cold.

The invention relates to the technical field of automatic fluid treatment, and provides a fluid sample loading dynamic calibration method and system based on a sensor, and the method comprises the following steps: after executing calibration operation on a bioreactor, obtaining a first sensing signal output in a transition fluid disturbance observation stage by controlling the sensor of a fluid sample loading unit; acquiring a second sensing signal output in a stable sample physical property evaluation stage by controlling a sensor of a fluid sample loading unit; performing feature comparison on the first sensing signal and the second sensing signal, and determining a disturbance compensation amount according to a comparison result; performing feature comparison on the second sensing signal and a historical reference sensing signal, and determining a drift compensation amount according to a comparison result; according to the disturbance compensation amount and the drift compensation amount, differential compensation adjustment is carried out on driving parameters or sensor interpretation logic of the fluid sample loading unit. The method has the effect of continuously and accurately reflecting the sample loading volume of the undisturbed sample state.

The present invention provides a true triaxial loading mechanism for simulating the dynamics of ultra-deep drilling cores, comprising a reaction loading frame, a first principal stress loading assembly, a second principal stress loading assembly and a third principal stress loading assembly, wherein a high-pressure fluid loading chamber extending along the third principal stress direction is constructed inside the reaction loading frame, and a core sample is arranged in the high-pressure fluid loading chamber, wherein the first principal stress loading assembly, the second principal stress loading assembly and the third principal stress loading assembly provide principal stress loading for the core sample in three principal stress directions, and the third principal stress loading assembly is integrated in the reaction loading frame, and the third principal stress loading assembly blocks the high-pressure fluid loading chamber, so that the high-pressure fluid loading chamber is formed into an ultra-high pressure chamber. The present invention can simulate the dynamic true triaxial loading conditions of ultra-deep drilling cores in deep geological environments during the true triaxial loading process of the core sample, so as to obtain stress-strain information of the dynamic disturbance full destruction process.

The invention relates to the technical field of fluid loading and unloading equipment, and discloses an electric vertical pipe of a train submerged loading and unloading vehicle, an outer sleeve, a middle sleeve and an inner sleeve are sequentially and coaxially sleeved to form a telescopic fluid channel; sliding sealing structures are respectively arranged between the outer sleeve and the middle sleeve and between the middle sleeve and the inner sleeve; the steel wire take-up and pay-off machine is connected with the inner sleeve through a The hydraulic oil replacing pump is arranged at the outlet end of the inner sleeve; the hydraulic pipeline is connected to the hydraulic oil replacing pump; a hydraulic oil replacing pump is directly arranged at the outlet end of the inner sleeve, so that liquid is sucked and output from the tank bottom, the whole loading and unloading process is ensured to be performed below the liquid level, volatilization loss and oil gas dissipation are thoroughly avoided, and the explosion risk and environmental pollution are remarkably reduced; the steel wire take-up and pay-off machine drives the sleeve to stretch out and draw back, automatic lifting of the vertical pipe is achieved, and manual operation risks are avoided. The three layers of sleeves are nested and telescopic, and are shrunk when not working, so that the occupied space is reduced; the problems that efficiency is low and safety risks exist in the manual loading process of the vertical pipe of the loading and unloading vehicle are solved.

The invention discloses an intelligent loading and unloading system suitable for a liquid chemical wharf, which is applied to the technical field of intelligent loading and unloading of the liquid chemical wharf, and comprises a fluid loading and unloading arm and an intelligent loading and unloading system, the intelligent loading and unloading system is used for remote automatic docking, information transmission and monitoring of the loading and unloading process of the liquid chemical materials; the fluid loading and unloading arm comprises a stand column, a counterweight assembly and a connector. The connector comprises a connecting arm, an emergency disengaging head, a cross arm, a second driving part and a third driving part. A first camera and a temperature sensor are fixedly connected to the bottom of the connecting arm, the temperature sensor is arranged below the first camera, a baffle is fixedly connected to the top of the first camera, a flow meter is arranged in the connecting arm, and a second camera is fixedly connected to the bottom of the cross arm; the chemical liquid loading and unloading device can load and unload chemical liquid in a standardized mode and improve loading and unloading safety.

The present invention provides a method for predicting wellbore liquid accumulation based on deep learning, comprising: S1, obtaining high-frequency SCADA production data and performing dimensionality reduction on it; S2, performing feature fusion on the dimensionality-reduced high-frequency SCADA production data, A2 data, and geological parameter data to obtain a fused feature vector; S3, using the fused feature vector for data modeling and training, and calculating a reconstruction error vector; S4, calculating a dynamic threshold based on the reconstruction error vector, and determining whether there is liquid accumulation in the wellbore according to the dynamic threshold. The present invention realizes the prediction of wellbore liquid accumulation based on deep learning. By using second-level data as features, the model not only focuses on the data fluctuations between days, but also takes into account the data fluctuations within a day, and can capture more subtle data changes. Moreover, the method of using a dynamic threshold to predict liquid accumulation can solve the problem that when there are large data fluctuations compared to the normal state in actual industrial production, the model will not make misjudgments.

The invention relates to a guide device (16) for allowing a cryogenic fluid loading and / or unloading tower (6) to be positioned relative to a base (4) attached to a bottom wall (2) of a cryogenic fluid storage tank (1), said guide device (16) comprising a support (24) having an edge portion (46) which at least partially delimits a receiving area (54) of said buffer (26), the edge portion (46) has an opening (56) configured to insert the cushion (26) into the receiving area (54), the cushion carrier device (16) comprising a retaining member (58) for the cushion (26) defining the receiving area (54), the retaining member (58) being designed to extend at least partially into the opening (56).

The invention relates to the technical field of fluid loading and unloading, and discloses liquid loading equipment. The liquid loading equipment comprises a supporting frame, a position adjusting device and a liquid loading device, the liquid loading device comprises a liquid guiding component, a telescopic component and a sealing component, the sealing component is arranged at the bottom of the telescopic component and can move in the vertical direction, and the liquid guiding component comprises an external sealing pipe, a ventilation outer pipe, a telescopic sleeve and a liquid inlet pipeline; the bottom end of the external sealing pipe is connected with the sealing component, the top end of the external sealing pipe is in sealing and sliding fit with the ventilation outer pipe, and an exhaust channel is formed between the ventilation outer pipe and the telescopic sleeve. According to the liquid loading equipment, the positioning and conveying process is automatic, participation of workers is reduced, the labor cost is reduced, the safety problem caused by manual operation errors is avoided, in addition, in the process that the telescopic component drives the sealing component to move, the external sealing pipe and the ventilation outer pipe are sealed all the time, so that gas can be exhausted through the exhaust channel, and the working efficiency is improved. And the phenomenon of gas leakage is avoided.

The utility model relates to a drainage tool and a loading assembly. The drainage tool comprises a loading part, a drainage part and an unloading part. A charging groove is formed in the charging part; one end of the drainage part is connected with the loading part, the drainage part extends in the first direction and is provided with a drainage groove, and one end of the drainage groove communicates with the loading groove; the discharging part is connected with the end, away from the loading part, of the drainage part and provided with a discharging groove, the discharging groove communicates with the end, away from the loading groove, of the drainage groove, and the side, away from the loading groove, of the loading part protrudes out of the drainage part. The drainage part and the discharging part are inserted into the quartz tube, the charging part abuts against the tube opening of the quartz tube, and positioning of the drainage tool is achieved. And then Hg is poured into the charging groove and flows into the bottom of the quartz tube through the charging groove, the drainage groove and the discharging groove in sequence, so that the Hg is prevented from being in contact with the inner side wall of the quartz tube. Meanwhile, the loading part can abut against the pipe orifice of the test pipe, so that the drainage tool is positioned relative to the test pipe, and subsequent fluid loading operation is facilitated.

The utility model relates to the technical field of fluid loading special equipment, in particular to a hand-operated telescopic vertical pipe which comprises a vertical pipe body, the vertical pipe body comprises an upper vertical pipe section, a middle vertical pipe section and a lower vertical pipe section, the upper vertical pipe section and the middle vertical pipe section are fixed through a bolt, and the lower vertical pipe section is sleeved on the outer side of the middle vertical pipe section in a sliding mode. A connecting plate is welded and fixed to the top end of the upper-end vertical pipe, and a hand-shaking lifting mechanism used for controlling the connecting block is movably assembled on the connecting plate. The size of the hand-operated telescopic vertical pipe can be adjusted in a telescopic mode, the vertical pipe can be switched into different lengths by shaking the lifting mechanism with hands, and the hand-operated telescopic vertical pipe is suitable for tank cars of different sizes. An eccentric shaft is arranged in the hand-shaking lifting mechanism, so that the steel wire rope can be suspended at any position; a pipe cap opening is formed in the bottom of the lower-section vertical pipe, the function of connecting a steel wire rope is achieved, and loading media can be buffered.

The utility model discloses an automatic fluid loading control system which comprises a storage tank and a conveying branch pipe which are connected on a conveying header pipe in parallel, the conveying branch pipe is connected with a stop valve and a flow meter, a conveying pump is installed on a connecting pipeline between the storage tank and the conveying header pipe, and a liquid level meter is arranged on one side of the conveying branch pipe. A remote control center is in control connection with the delivery pump and the stop valve, and the flowmeter is in signal connection with the control center. The effects of improving the fluid loading efficiency and safety and reducing the labor intensity of workers are achieved.

To provide a buffer support body having a configuration to facilitate installation to a loading and / or unloading tower.SOLUTION: There is provided a guide device (16) for relatively positioning a loading and / or unloading tower for cryogenic fluid on a base attached to a bottom wall of a storage tank for cryogenic fluid. The guide device (16) includes a support body (24) having a rim (46) for defining a storage zone (54) of a buffer (26) at least partially. The rim (46) includes an opening (56) configured to insert the buffer (26) into the storage zone (54). A carrier device (16) for the buffer includes a holding member (58) for the buffer (26), which defines the storage zone (54). The holding member (58) is designed to extend in the opening (56) at least partially.SELECTED DRAWING: Figure 4

The invention discloses a four-link fluid loading and unloading arm, which belongs to the technical field of port terminal fluid loading and unloading equipment, and includes a column, an inner arm tube, an outer arm tube and a rotary joint, and is characterized in that: the inner arm tube is connected to the inner arm counterweight beam, and a first counterweight block is installed on the inner arm counterweight beam; the outer arm tube is connected to the outer arm counterweight beam, and the inner side of the inner arm counterweight beam is rotatably connected to one end of a counterweight plate, and the other end of the counterweight plate is connected to the outer arm counterweight beam through a connecting rod; the rotary joint includes an outer ring tube, an inner ring tube, a second frameless torque motor and a sealing mechanism, and the outer ring tube is sleeved on the outer side of the inner ring tube; the second frameless torque motor is fixedly installed in the annular placement groove, and the inner ring of the second frameless torque motor is connected to the outer wall of the inner ring tube; the tube cavities of the column, the inner arm tube and the outer arm tube are respectively installed with telescopic tube mechanisms. Compared with the prior art, it has the characteristics of preventing the inner and outer tube arms from shrinking and deforming when they are cold.

The utility model discloses an anti-freezing low-temperature fluid loading and unloading arm, and relates to the technical field of loading and unloading arms. The device comprises a supporting frame, and a connecting assembly, a limiting assembly, a driving assembly, a transmission assembly and an extending assembly are arranged on the supporting frame. The driving assembly is started to drive the transmission assembly fixedly installed at the output end of the driving assembly to rotate, the interior of the transmission assembly and the outer surface of the limiting assembly are fixedly installed, and the top end of the limiting assembly and the bottom end of the extending assembly are fixedly installed, so that when the transmission assembly rotates, the limiting assembly can rotate; the extending assemblies can be driven to rotate by cooperating with the limiting assemblies, so that the multiple sets of extending assemblies in the folded state are unfolded, when the extending assemblies need to be folded and retracted, the steps are reversely operated, and the limiting assemblies are limited and fixed, so that the positions of the extending assemblies can be limited and fixed; and the limiting assembly is matched to prevent the extension assembly from swinging in the folded state.

The utility model relates to the technical field of valves, and discloses a fluid loading and unloading valve assembly which comprises a valve body, a feeding pipe extending to the right side of the inner wall of the valve body is fixedly installed on the right side of the inner wall of the valve body, a connecting pipe is fixedly installed at one end of the right side of the feeding pipe, and a discharging pipe extending to the left side of the inner wall of the valve body is fixedly installed on the left side of the inner wall of the valve body. A mounting cover is movably mounted at one end of the left side of the discharging pipe, and a discharging pipe extending to the bottom of the discharging pipe is fixedly mounted on the inner bottom wall of the discharging pipe. The pull ring is lifted upwards, so that the sliding plate slides along the frame body to drive the vertical plate to ascend, the vertical plate and the ring body move when the vertical plate moves upwards through cooperation of the connecting rod, the anti-blocking blades and the mounting rod synchronously move along with the vertical plate, blocking objects in the feeding pipe or the discharging pipe are broken, and the purpose of arranging the anti-blocking structure is achieved.

The utility model provides a motor bearing steel ball cleaning and drying all-in-one machine, which relates to the technical field of bearing steel ball processing and comprises an operating machine table, a cleaning fluid loading bin fixed at the top of the operating machine table, a first lifting sliding rod fixed at the top of the operating machine table, and a first upper supporting seat fixed at the other end of the first lifting sliding rod. The top of the operation machine table is rotationally connected with a first lifting screw rod, the other end of the first lifting screw rod is rotationally connected with the first upper supporting seat, the surface of the first lifting screw rod is in threaded connection with a first lifting seat, the first lifting seat is slidably connected to the surface of a first lifting sliding rod, and the first lifting screw rod is driven by a first motor to rotate; the first motor is fixed to the top of the first upper supporting seat, a steel ball cleaning round bin is fixed to one side of the first lifting seat, a liquid inlet hole is formed in the bottom of the steel ball cleaning round bin in a penetrating mode, a first supporting plate is fixed to the top of the first lifting seat and the top of the steel ball cleaning round bin, and a round rod bearing part is fixed to the top of the first supporting plate. The round rod bearing piece is rotationally connected with a horizontal rotating rod in a penetrating mode.

The utility model relates to the technical field of fluid loading and unloading special equipment accessories, in particular to an ice falling prevention device which comprises a loading and unloading arm main pipeline, and the loading and unloading arm main pipeline comprises a first connecting guide pipe, a second connecting guide pipe, a first fixed communicating bent pipe and a second fixed communicating bent pipe which are fixedly installed on an installation support through a lateral support. A plurality of steel wire meshes are fixedly installed on the outer sides of the first connecting guide pipe and the second connecting guide pipe through fixing pieces. The ice falling prevention device is simple in structure, safe to operate and low in cost; the net-shaped structure design is adopted, so that the risk that an ice layer falls off can be reduced; the detachable structural design is adopted, and mounting and dismounting are convenient.

The flushing fluid loading barrel comprises a barrel body, a barrel opening is formed in the top of the barrel body, leg containing spaces are arranged on the left lower side and the right lower side of the barrel body respectively, the left wall of the barrel body is obliquely arranged rightwards from top to bottom, and the right wall of the barrel body is obliquely arranged leftwards from top to bottom. And the two leg placing spaces are arranged below the barrel opening. The left wall and the right wall of the barrel body are arranged to be inclined, the transverse size of the barrel opening can be set to be large so as to collect flushing fluid, the transverse size of the lower portion of the barrel body is small, when the two legs of a doctor are placed in the two leg placing spaces, the two legs of the doctor do not need to be diverged by a large angle, and the problem that the lower limbs are soreness and limp is solved.

The utility model discloses an automatic connecting device of a fluid loading and unloading arm connecting flange, which comprises a plurality of guide plates and a plurality of locking mechanisms which are arranged along the circumferential direction of the loading and unloading arm connecting flange, and the guide plates are hinged on the loading and unloading arm connecting flange. The inner side of the guide plate is provided with a guide slope which guides flange butt joint and is suitable for flange calibers of different sizes; the lower end of the guide slope is provided with a limiting part; the locking mechanism comprises a support, a movable arm and a clamping jaw, the middle of the clamping jaw is hinged to the front end of the movable arm, the rear end of the clamping jaw is connected with the middle end of the movable arm through a linkage mechanism, and a clamping jaw driving mechanism connected with the linkage mechanism is installed on the loading and unloading arm. Through the arrangement of the hinged guide plate, rigid collision between the guide plate and the flange can be avoided, and the flange is guided; the flange butt joint device is suitable for butt joint of flanges with various calibers through the guide inclined face, rotation of the clamping jaws is achieved without occupying too much space through the linkage mechanism with the movable arm, and automatic connection of the flanges is achieved.

The utility model discloses a rotary joint for a fluid loading and unloading arm, which relates to the technical field of fluid loading and unloading arms and comprises a joint body, the left surface of the joint body is fixedly connected with a fixed pipe, the left surface of the fixed pipe is movably sleeved with a movable pipe, and the left surface of the movable pipe is fixedly connected with a connecting ring. When the connector body is connected with a second connecting pipe for use, the second connecting pipe and the flange plate fixed to the connecting ring are fixed through a set of bolts, the tightness in the use process is guaranteed, the movable pipe is fixed to the right side of the connecting ring, and the movable pipe is movably clamped in the fixed pipe through the two limiting blocks fixed to the movable pipe. A movable pipe is inwards extruded to the bottom end through a second connecting pipe, two limiting blocks push two movable blocks to move together in the inwards extruding process of the movable pipe, two springs are compressed, and the two movable blocks are completely clamped in two limiting grooves at the moment.

The utility model relates to the technical field of fluid loading and unloading arms, and discloses a vertical pipe balance structure of a fluid loading and unloading arm, which comprises an input pipe for medium input and a rotatably arranged vertical pipe, the vertical pipe is connected with the input pipe through a flange plate, the vertical pipe is connected with a balance rod, and the balance rod is connected with the flange plate through a gas spring; the balance rod is matched with the gas spring to control the vertical pipe, so that the balance state of the vertical pipe is controlled, and the operation is lighter; the balance rod is used for controlling multi-angle swing of the vertical pipe, the gas spring is used for balancing and locking, the structural firmness and stability are higher, time and labor are saved, the application range can be widened, and the problems that a spring cylinder on the crane pipe only balances an outer arm of the crane pipe, the vertical pipe cannot be in a balanced state, swing of the vertical pipe is interfered through manpower, and the work efficiency is high are solved. And the workload is increased.

The utility model provides a connecting device for a loading and unloading arm and a tank opening, which belongs to the field of fluid loading and unloading and comprises a stand column, a loading and unloading arm body is mounted on the side wall of the stand column, a discharge pipe is communicated with the loading and unloading arm body, a sealing cap is slidably connected to the side wall of the discharge pipe, and the sealing cap is conical. A protection assembly is mounted on the loading and unloading arm body; an adjusting assembly; the adjusting assembly comprises an outer threaded pipe fixedly connected to the side wall of the discharging pipe, a lifting sleeve is slidably connected to the side wall of the discharging pipe, a supporting frame is fixedly connected to the upper end face of the lifting sleeve, a first rotating gear is rotationally connected to the upper end face of the supporting frame, and the outer threaded pipe penetrates through the first rotating gear in a threaded mode. According to the utility model, counter-acting force is applied to the sealing cap through the spring bracket, the sealing effect of canning is improved, and after the height of the can opening is reduced, the sealing cap is always attached to the can opening under the action of the elastic force of the spring bracket, so that the sealing effect of the sealing cap is ensured.

The present application belongs to the technical field of oil and gas exploration and development, and relates to a low-temperature loading and unloading conveying system docking method and device, comprising: when the tank truck enters the working area, the tank truck is roughly positioned to preliminarily determine the tank opening position of the tank truck; the tank opening is photographed at the tank opening position to obtain a tank opening image; the tank opening image is input into an image edge detection algorithm model to obtain an edge image of the tank opening; the edge image is corrected through orthogonal scanning to obtain the center coordinates of the tank opening; the center coordinates are compared with the center position of the fluid loading and unloading arm to obtain the deviation amount of the two; the fluid loading and unloading arm is driven to move according to the deviation amount; when the center coordinates and the center position of the fluid loading and unloading arm completely coincide, the docking operation is completed, and the fluid loading and unloading arm is lowered by the lifting hydraulic cylinder. The present application can realize the automatic centering, lowering and retracting of the loading and unloading arm and the pipe opening, thereby eliminating the labor of the person during the loading process and reducing the harm to the person caused by possible safety hazards.

The utility model belongs to the field of fluid loading and unloading special equipment, and relates to a tank car quick connector which comprises an external thread sleeve, an internal thread sleeve, a hand wheel, a connecting rod mechanism, two clamping jaws and a loose flange. During butt joint, the connecting rod mechanism is pulled backwards, the abutting block of the connecting rod mechanism is opened towards the outer side, the clamping jaw connected with the abutting block is opened, the tank car quick connector is pushed to be close to the tank car interface flange, the connecting rod mechanism is loosened, and the clamping jaw is folded; the hand wheel is rotated clockwise to drive the external thread sleeve to rotate clockwise, the internal thread sleeve moves in the direction close to the hand wheel through thread transmission, the clamping jaw is driven to move backwards, and the clamping jaw and the tank car interface flange are tightened. The quick butt joint of the tank car quick connector and the tank car interface flange is achieved in a hand wheel transmission mode, the butt joint precision and the sealing tightness are improved, the connecting rod mechanism is adopted to be connected with the clamping jaws, opening and closing of the clamping jaws can be achieved, and the tank car quick connector and the tank car interface flange can be aligned and fixed conveniently.

A pressure stabilizing and loading system for a cavitation bubble water tunnel experimental device comprises a fluid loading tank and an air pressure loading unit, the air pressure loading unit comprises an air supply device and a pressure stabilizing cylinder, the pressure stabilizing cylinder is provided with a cylinder body and an elastic diaphragm arranged in the cylinder body, the elastic diaphragm divides the internal space of the pressure stabilizing cylinder into a first chamber and a second chamber, and the first chamber and the second chamber are communicated with each other. And air conveyed by the air supply device is fed into the fluid loading tank through the first chamber. According to the embodiment of the utility model, the experimental water is loaded to the water tunnel device at a high speed through the loading of the high-pressure gas and the air pressure, so that the cavitation experiment is carried out in the water tunnel device, the vibration and noise of the loaded gas are relatively small, and the pulse pressure of the filled air can be eliminated by the elastic diaphragm in the pressure stabilizing cylinder; the pressure of gas in the fluid loading tank is kept stable, experimental water is stably pressed to the water tunnel device, the experimental water cannot be disturbed or generate turbulent flow, and pulsating pressure cannot be generated.

The invention provides a loading arm and an oil loading system, and belongs to the technical field of fluid loading and unloading. The crane pipe comprises a crane pipe body, an oil inlet pipe, a movable crane pipe, an oil stopper, a motor and a transmission part. When oil loading operation is carried out, the oil inlet pipe is connected with the oil storage tank, the motor drives the movable crane pipe to stretch out of the crane pipe body through the transmission component, an oil inlet of the movable crane pipe is located in the oil outlet direction of the oil inlet pipe, and meanwhile an oil outlet of the movable crane pipe stretches into the oil loading tank in the oil tank truck. Due to the fact that the movable crane pipe is in sliding connection with the crane pipe body, the motor can control the extending length of the movable crane pipe according to the height of an oil tank of an oil loading point, and the crane pipe can be suitable for oil loading operation from oil loading points of different heights.

The utility model discloses an overhanging arm structure of a fluid loading and unloading arm, which relates to the technical field of fluid loading and unloading arms, and comprises a stand column, a support block fixedly connected to the annular side surface of the stand column, and an inner arm arranged on the upper surface of the support block, the outer arm is pressed rightwards to drive the second flange plate fixed to the outer arm to move together, the second flange plate drives the connecting pipe fixed to the second flange plate to move together in the stress process, the connecting pipe pushes the two arc-shaped blocks to move together in the rightward moving process, the two springs are compressed, and at the moment, when the outer arm is pushed to the top end and then rotates, the outer arm rotates; the connecting pipe rotates along with the rotating shaft, at the moment, the two connecting blocks fixed to the connecting pipe rotate in the clamping grooves, the design that limiting is opened, the outer arm can be detached, and the outer arm is convenient to detach allows rapid maintenance and repair work, the whole loading and unloading arm does not need to be detached, and therefore the maintenance time and cost are reduced.