552 results about "Energy converter" patented technology

The invention presented relates to a method (100) for determining a state of at least one electrochemical cell (301) of an electrochemical energy converter (300), the procedure (100) comprises: - Determining (101) a trend of values ​​determined by at least one sensor (303) of the energy converter (300) over time, - Determining (103) evaluable data packets, - Aggregating (105) at least one range of respective evaluable data packets (205, 209) of values ​​determined by the at least one sensor into at least one aggregated trend, - Assigning (109) a characteristic value to the at least one aggregated trend using a machine learner (400), including a runtime parameter that specifies a runtime of the at least one electrochemical cell (301), - Output (111) of the characteristic value on an output unit, wherein an evaluable data package comprises a multitude of data points whose values ​​differ from each other by no more than a predetermined threshold, at least for a given duration.

The invention discloses a direct-current power optimization control method of a multi-port energy converter and a related device, and belongs to the technical field of converters. According to the method, partition control is carried out according to the load power range, the most suitable power supply mode is automatically matched in different load power intervals, the system can dynamically adapt to different power demand scenes, resource configuration is optimized, and efficient and stable power supply under various working conditions is ensured. Meanwhile, an improved droop control method is adopted, current distribution between parallel power supplies / modules is balanced, a droop coefficient is dynamically adjusted by considering a temperature influence factor, the problem of uneven thermal stress distribution is effectively relieved, the service life of equipment is prolonged, and meanwhile the overall energy efficiency and thermal management performance are improved. The overall conversion efficiency of the multi-power-supply / module parallel system in different load intervals is improved, and the reliability of the whole power supply system is improved.

The invention relates to a material that can be produced by means of the following method: • triglycerides are stirred with 0.1 to 0.5% sulfuric acid (of 99% concentration), the reaction process being able to be accelerated by cavitation, • 1 to 3% water is added and the mixture is left standing until the water settles, • this settled aqueous solution is heated in the presence of a material composed of an iron-containing alloy, for example an alloy comprising iron, nickel, chromium and manganese, in particular approximately 70% iron, 18% chromium, 8% nickel and 1.5% manganese, • the mixture, which boils at 80°C, is heated to just under 100°C, until the water has evaporated, and is held at this temperature further until the then viscous mass releases water of crystallization; thereupon, the supply of heat is stopped.

The invention aims to provide a detection device and a detection method for gravel pile diameter detection. According to the detection device and the detection method, the distance between transducers mounted on the two sides of a pile pipe and the center of the pile pipe is determined; when gravel pile construction is carried out, the energy converter is started, vibration blanking is started when the pile pipe sinks to the target elevation, and a pile body of a gravel pile is formed; wave signals fed back by the transducers are received on an analysis system, and the pile body diameter of the gravel pile is calculated based on the wave signals and the distance between the two transducers and the center of the pile pipe. Therefore, the pile diameter can be detected in real time along with lifting of the pile pipe, constructors can conveniently and visually master pile diameter information in time, and construction quality is improved.

The invention discloses a high-pressure well mouth two-stage tandem connection self-energy-charging water pumping desander and a working method. A first-stage water pumping pipe is arranged in an inner side cavity of a first-stage separator, a second-stage water pumping pipe is arranged at the bottom of an inner side cavity of a second-stage separator, an energy storage electric device is arranged in the second-stage separator, a self-energy-charging element is arranged in the second-stage separator, and the self-energy-charging element is arranged in the second-stage separator. A water suction pump body is arranged at the end part of the first-stage water suction pipe or the second-stage water suction pipe; the energy storage electric device comprises a motor and an energy storage device, and an energy converter is arranged in the self-charging element; and a cleaning triggering mechanism is arranged in the first-stage water pumping pipe. By arranging the internal water pumping mechanism, internal accumulated water is automatically discharged, the adopted drainage pipe does not need to be communicated with the outside of the sand remover, continuous work of the sand remover is guaranteed, energy is generated by means of gas power of natural gas, water is pumped, and the accumulated water is pumped and discharged.

The invention discloses a high-voltage distribution network reactive voltage optimization method, device, equipment and medium based on a time scale, and relates to the technical field of distribution network optimization, and the method comprises the following steps: obtaining the real-time operation state data and prediction information of a high-voltage distribution network, dividing the operation time of the high-voltage distribution network, obtaining the divided data, and calculating the real-time operation state data of the high-voltage distribution network; the division data comprises a long time scale and a short time scale; under a long time scale, based on load prediction and distributed power supply output prediction, a mixed integer programming model is established, and a capacitor bank switching scheme and a transformer tap reference position are obtained; under a short time scale, constructing an optimal power flow model with minimum voltage deviation as a target, and dynamically calling the reactive capacity of the distributed energy converter for real-time correction; and establishing a cross-time-scale coordination control mechanism, triggering advanced re-optimization of a long time scale when the accumulated reactive power regulation quantity under a short time scale reaches a preset reactive power capacity threshold value, and updating an equipment action constraint condition.

A pressure vessel for storing may have a connection piece for forming a fluid connection between the fuel storage volume V of the pressure vessel and an energy converter of a motor vehicle. At least part of the connection piece may extend out of the pressure vessel. An outer surface of the connection piece may have a sealing face and a curved fastening face. The sealing face may be designed to seal off the fluid connection between the pressure vessel and a fuel-conducting section of the motor vehicle. The fastening face may be provided for fastening the pressure vessel to at least one body attachment element.

A centrifugal separator arrangement includes: an energy converter positioned in proximity to a rotor of the centrifugal separator and configured to collect and convert the non-electrical energy generated by the rotor of the centrifugal separator into electrical energy; and a sensor configured to obtain a parameter associated with the operation of the centrifugal separator, wherein the sensor includes a processor configured to produce corresponding data, and wherein the sensor is in electrical connection with the energy converter to be powered by the electrical energy collected and converted by the energy converter. A method and a system for energy harvesting in the centrifugal separator arrangement is also provided.

An energy storage cabinet and a cabinet-type energy storage device are disclosed. The energy storage cabinet includes a cabinet body, a baffle and an energy converter. A partition is provided in the cabinet body. An internal space of the cabinet body includes a battery chamber and a converter chamber separated by the partition. Side plates of the cabinet body has an air inlet and an air outlet communicated with the converter chamber. The baffle is located in the converter chamber and separates the converter chamber into a cold air cavity and a hot air cavity. The energy storage converter is located in the converter chamber and has a heat-dissipation air duct. The heat-dissipation air duct includes an air inlet port located at an air inlet end of the energy storage converter and an air outlet port located at an air outlet end of the energy storage converter.

A direct converter for an axisymmetric mirror confinement system provides a set of radially symmetric vanes charged to capture ions escaping along the axis of the confinement system and to convert their energy to electrical power. An electron trap positioned before the charged vanes uses a magnetic field to divert and collect electrons, separating them from the ions, and may support a radial electric field providing plasma control. The charged vanes may be constructed of or have a coating of a getter material absorbing neutrals derived from those ions after capture.

The invention discloses plastic product ultrasonic welding equipment, and relates to the technical field of plastic ultrasonic welding, the plastic product ultrasonic welding equipment comprises a workbench, the top of the workbench is connected with a welding machine assembly through a lifting module, the welding machine assembly comprises an amplitude-change pole, the upper end of the amplitude-change pole is provided with an energy converter, the top of the workbench is provided with a mold assembly, and the mold assembly is connected with the workbench. The die assembly comprises a hollow lower die and a hollow upper die, and the upper die is fixedly connected to the lower end of the amplitude-change pole. According to the ultrasonic welding equipment for the plastic products, during ultrasonic welding, the lower die and the upper die can be adaptively adjusted according to the surface shape of a workpiece, the workpiece is limited, meanwhile, the workpiece can be subjected to negative pressure adsorption, the ultrasonic welding equipment is more stable and reliable, the dies do not need to be replaced, and the workpiece does not need to be centered; the ultrasonic welding efficiency can be improved; and after ultrasonic welding is completed, the ultrasonic welding strength of the plastic product can be conveniently detected, and the ultrasonic welding quality is guaranteed.

A hybrid bifurcating wave energy converter (WEC) is described. The hybrid bifurcating WEC may be capable operating in various orientations with various degrees of rigidity and / or flexibility. The amount of rigidity or flexibility may be based on the intended mode of operation and the intended operational environment. In some embodiments, the hybrid bifurcating WEC may utilize distributed embedded energy converter technologies and folding, origami-like mechanics. In this way, the overall shape, form, and function of the hybrid bifurcating WEC may be governed by a structure with hinges, bends, and / or joints with the ability to fold and unfold in some embodiments being controlled by the distribution and embedding of many relatively small energy converters (i.e., generators).

The invention discloses a transducer installation position calibration method based on observation track optimization analysis, and relates to the technical field of marine survey, and the method comprises the following steps: constructing a joint estimation model of the installation position of a shipborne transducer and the position of a seabed transponder, and directly using the sound propagation time measurement between the seabed and the sea surface as an observed quantity; dimension expansion estimation is carried out on the installation position of the shipborne transducer; calculating an installation position error parameter by using a ray acoustic propagation model in combination with coordinate conversion calculation; according to the method, track optimization key influence factors are analyzed, a square track design of a bidirectional course angle is put forward, finally, shipborne transducer installation position error compensation and seabed transponder positioning result output are achieved, through the method, the shipborne transducer installation position error can be compensated, and the seabed transponder positioning precision can be improved.

The invention relates to a removable range extender (12) for a motor vehicle (10), comprising an energy converter designed to convert a fuel into electrical energy; a fuel storage unit for storing and providing the fuel for the energy converter; wherein the range extender (12) is designed to be releasably fastened outside a vehicle interior, at least partially to a rear region (14) or roof region of the motor vehicle (10). The invention further relates to a motor vehicle (10) having a removable range extender (12).

The present application discloses a spiral pusher, an energy enhancement rod pushing device, and a shock wave generating device, including a movable sleeve and spiral pushing sheets uniformly wound around the outer wall of the movable sleeve, the spiral pushing sheets being perpendicular to the outer wall of the movable sleeve; the spiral pushing sheets form an energy enhancement rod conveying space on the outer wall of the movable sleeve; a push rod through hole for the push rod to pass through is provided at the center of the movable sleeve, an energy converter connection end is connected to the front end of the movable sleeve, and a commutation mechanism connection end is connected to the rear end of the movable sleeve; an energy enhancement rod transfer part is provided at the front end of the movable sleeve, and the energy enhancement rod transfer part includes an energy enhancement rod transfer window provided on the movable sleeve, and the energy enhancement rod transfer window communicates the outside of the movable sleeve with the push rod through hole. The present application solves the problems in the prior art that the energy enhancement rod pushing assembly has a complex structure, resulting in poor reliability and high failure rate of the energy enhancement rod pushing assembly.

The invention relates to the technical field of medical equipment, in particular to a sputum treatment device and method, a storage medium and a program product, the device comprises a sputum positioning device, a sputum excretion device and a control assembly, and the sputum positioning device comprises a target sensor assembly and projection equipment; the sputum excretion device comprises a sputum excretion pipe and an energy converter. The control assembly is used for receiving the sound wave data collected by the target sensor assembly in the sputum positioning device, calculating the target sputum position of the lung of the patient, controlling the projection equipment to project to the corresponding body surface position of the patient according to the target sputum position, and controlling the sputum excretion device to reach the target sputum position according to the target sputum position. Therefore, the problems that in the prior art, due to the fact that the sputum position is repeatedly positioned through a stethoscope, the positioning precision is poor, the working efficiency is low, and due to inaccurate positioning in follow-up sputum excretion, a patient is strongly stimulated or injured are solved.

The ultrasonic flowmeter module comprises a module body and a cover plate, the module body is in a cuboid shape, the left end and the right end of the module body are two transducer installation areas respectively, the middle of the module body is a control module circuit board installation area, and the cover plate is arranged on the upper surface of the module body; each transducer mounting area comprises a cylindrical barrel, a closed blind hole is formed in the bottom of the barrel, the upper part of the barrel is closed through a cover plate, a through hole I is formed in the position, corresponding to the transducer, of the cover plate, a plurality of screw holes I are formed in the periphery of the barrel, and the control module circuit board mounting area comprises a cuboid frame body; a cavity is arranged between the frame body and the cover plate, the cavity is communicated with the barrel bodies on the two sides respectively to form an inverted-concave-shaped communicated cavity, the two ends of the control module circuit board extend into the barrel bodies respectively, a second through hole is formed in the upper surface of the cover plate at the corresponding position of the frame body, and a cylindrical terminal groove is formed in an opening of the second through hole. The terminal grooves protrude out of the surface of the cover plate. Through the design of the blind holes, the energy converter is prevented from being in direct contact with gas or liquid in the pipe section, and the waterproof performance of the module is improved. And the transducer is connected with the circuit board through a reasonable structural design, so that the exposure of a circuit is reduced, and the stability of a product is enhanced. And through a process of pouring glue for several times, the integration of the module is enhanced, and the waterproof effect is better.

The utility model discloses an ultrasonic flowmeter module which comprises a module body and a cover plate, the module body is in a cuboid shape, the left end and the right end of the module body are respectively provided with two transducer installation areas, the middle of the module body is provided with a control module circuit board installation area, and the cover plate is arranged on the upper surface of the module body. Each transducer mounting area comprises a cylindrical barrel, a closed blind hole is formed in the bottom of the barrel, the upper part of the barrel is closed through a cover plate, a through hole I is formed in the position, corresponding to the transducer, of the cover plate, a plurality of screw holes I are formed in the periphery of the barrel, and the control module circuit board mounting area comprises a cuboid frame body; a cavity is arranged between the frame body and the cover plate, the cavity is communicated with the barrel bodies on the two sides respectively to form an inverted-concave-shaped communicated cavity, the two ends of the control module circuit board extend into the barrel bodies respectively, a second through hole is formed in the upper surface of the cover plate at the corresponding position of the frame body, and a cylindrical terminal groove is formed in an opening of the second through hole. The terminal grooves protrude out of the surface of the cover plate. According to the utility model, the energy converter is prevented from being directly contacted with gas or liquid in the pipe section through the design of the blind hole, and the waterproof performance of the module is improved.

This disclosure describes many innovations including but not limited to systems, methods, and non-transitory computer readable media for controlling an energy generator. A system for controlling an energy generator includes a detector for sensing an indicator of electrical energy generated by the generator; an energy storage component configured, in a first mode of operation, to store energy generated during operation at a sub-threshold level insufficient for real-time supply to an electrical energy sink; an energy converter configured, in a second mode of operation, to provide energy generated during operation above the threshold level for real-time supply of energy to the electrical energy sink; and a controllable switch, electrically associated with the detector, and configured to alternately toggle between the first mode of operation and the second mode of operation based on the indicator to thereby permit energy generated at the sub-threshold level to be collected and intermittently used.

The invention provides an optical storage DC flexible power distribution system and a regulation and control method thereof, and the system comprises a plurality of transformer area systems carried in a plurality of transformer area energy stations and a plurality of household subsystems carried in a plurality of household energy walls. The transformer area system comprises a static change-over switch, an isolation transformer, a bidirectional energy converter and the like. The transformer area system takes power from a power grid and supplies the power to a direct-current bus. The household subsystem comprises a photovoltaic module, an energy storage module, a charging pile, a direct-current load, an alternating-current load and an energy management system controller, and the household subsystem is connected to the direct-current bus; the plurality of transformer area systems are connected to the lower end of the static change-over switch, and the plurality of household subsystems are connected through a direct current bus. According to the optical storage direct flexible power distribution system provided by the embodiment of the invention, interaction between a power grid and a transformer area, between transformer areas, between transformer areas and users and between users can be perfectly adapted, multiple transformer areas are combined into a whole, the electric energy dispatching capability is improved, and work such as peak load shifting and response to a virtual power plant can be better realized.

The ultrasonic vibrating screen comprises a machine base, a screening barrel, a feeding port, discharging ports, an ultrasonic generator and an energy converter, the top of the machine base is connected with the screening barrel, the feeding port is located in the top of the screening barrel, the discharging ports are divided into a plurality of sets and evenly installed on one side of the screening barrel, and the ultrasonic generator is connected with the energy converter. The ultrasonic generator is connected with the transducer through a line, the transducer is installed in the screening cylinder, a plurality of sets of double-layer installation rings are arranged on the screening cylinder from top to bottom, each double-layer installation ring is composed of two sets of ring bodies which are arranged in parallel up and down, a gap groove is formed between the two sets of ring bodies, and a rotary replacement assembly is arranged in the gap groove. The rotary replacement assembly comprises a bidirectional clamping plate, a screen, a driving shaft, a driven gear, a driving gear and a driving motor, and the bidirectional clamping plate is located on the edge of the gap groove. According to the ultrasonic vibrating screen designed by the utility model, the normal use of the screen can be ensured in a manner of quickly replacing the blocked meshes.

The utility model provides an integrated thermophotoelectric isotope power supply testing device, and relates to the technical field of power supplies. The integrated thermophotoelectric isotope power supply testing device comprises a rack, a vacuum cavity, a heat source, a photoelectric conversion module and a cooling module, the vacuum cavity is installed on the rack and provided with a vacuum cavity and a vacuumizing connector communicated with the vacuum cavity. The heat source is mounted in the vacuum cavity; the photoelectric conversion module comprises a filter and a transducer which are arranged in the vacuum cavity, and the heat source, the filter and the transducer are sequentially arranged from bottom to top; the cooling module is installed in the vacuum cavity, and the cooling module is matched with the energy converter and used for conducting heat exchange with the energy converter so as to reduce the temperature of the energy converter; wherein the heat source is a radioactive isotope heat source or a simulated heat source. The device can test the performance of a simulated thermo-photoelectric isotope power supply system while testing a miniaturized thermo-photoelectric isotope power supply, and meets the stability of long-time operation.

The invention relates to a transducer matching optimization program algorithm for an NB remote transmission ultrasonic gas meter, and the method comprises the steps: carrying out the continuous sampling of measurement data in the gas meter in a sampling time period, and obtaining a sampling data set; obtaining a first sound velocity estimation value according to the downstream propagation time and the countercurrent propagation time; obtaining a primary sieve database based on all the first sound velocity estimated values; determining a matched fluid corresponding to the target fluid in a primary screen database according to the first sound velocity estimation value; determining an initial working parameter group in the transducer in a fluid acoustic parameter database according to the matched fluid; performing adaptive correction on the initial working parameter group according to the first sound velocity estimation value to obtain a recommended working parameter group; and generating a control instruction based on the recommended working parameter group, and sending the control instruction to the transducer. Compared with a fixed gain mode, the method can be matched with various gas media in a self-adaptive mode, and the application range of the ultrasonic gas meter is remarkably expanded.

The invention provides a programmable linear bipolar high-voltage ultrasonic driving device which comprises a ZYNQ and DAC driving module used for executing analog signal output for converting digital quantity into analog quantity according to a waveform file; wherein the ZYNQ module executes data reading according to a waveform file and sends a data port to the DAC driving module; the method further comprises the steps of generating a time-sharing switching signal; the DAC driving module is used for converting the digital quantity voltage value into analog waveform voltage and outputting the analog waveform voltage; the DAC driving module converts a digital signal into an analog electric signal, and the passive low-pass filtering unit performs signal filtering to obtain sine wave output; and the bipolar linear power amplification module is used for converting the analog waveform voltage into ultrasonic high voltage according to the analog waveform voltage. The problems that the service life of an energy converter is affected and the energy converter is easily damaged due to the fact that rectangular pulse square waves can generate large resonance current under abrupt-change high voltage, main lobes and side lobes of echo signals are difficult to distinguish, and the position of a head wave is difficult to judge are solved.

The utility model discloses a water-jet loom dewatering structure and a water-jet loom, and relates to the technical field of water-jet looms, the water-jet loom dewatering structure comprises a box body, the two sides of the box body are respectively provided with a feed port and a discharge port of cloth, the interior of the box body is divided into a heating area and a dewatering area through a partition plate, a heating assembly is arranged in the heating area, and the dewatering area is provided with a dewatering assembly. The heating assembly comprises a plurality of heating boxes, a dehydration assembly is arranged in the dehydration area, and the dehydration assembly comprises a plurality of ultrasonic oscillation devices. According to the design scheme, cloth is preliminarily heated and dried through the heat conducting plates on the upper surfaces of the heating boxes, the edges of the heat conducting plates are subjected to arc treatment, the cloth is prevented from being scratched, the cloth passes through the upper portion of the energy converter, the energy converter converts high-frequency electric energy into mechanical energy, generates ultrasonic waves and transmits the ultrasonic waves to the surface of the cloth, the cloth generates tiny vibration, and the cloth is heated and dried. Water molecules in the cloth are vibrated and collided under the action of ultrasonic waves, volatilization of the water molecules in the cloth is accelerated, the cloth dehydration effect is improved, and the working efficiency is improved.

The utility model provides a disc type multichannel ultrasonic sample processing device which comprises a shell, a circular groove is formed in the upper surface of the shell, a reagent tube mold is fixedly installed in the circular groove and is in a circular ring shape, and a reagent tube is slidably connected into the reagent tube mold. A radial vibration disc is slidably connected to the circular ring center of the reagent tube mold, and a longitudinal vibration transducer is fixedly mounted at the bottom of the radial vibration disc. By designing the reagent tube mold, the longitudinal vibration energy converter and the radial vibration disc, when the reagent tube mold is used, the motor is started to drive the longitudinal vibration energy converter and the radial vibration disc to move upwards in the reagent tube mold so as to relieve extrusion on the inner wall of the reagent tube mold, a reagent tube can be conveniently inserted into the reagent tube mold, and then the longitudinal vibration energy converter is started to drive the longitudinal vibration energy converter and the radial vibration disc to move upwards. And the radial vibration disc and the reagent tube are driven to shake, so that samples are uniformly dispersed and mixed, non-contact and non-pollution of the samples are realized, and the samples can be extracted more efficiently and accurately.

The utility model relates to the technical field of alcohol precipitation, and discloses an alcohol precipitation tank which comprises a tank body, the bottom surface of the tank body is communicated and connected with a deslagging component, two sides of the tank body are fixedly connected with adjusting components, and the bottom end of a hydraulic rod is rotatably connected with a reinforcing component. According to the alcohol precipitation tank, through the arrangement of the rotating assembly, the stirring impeller, the supporting strip, the scraping strip and the ultrasonic assembly, when the alcohol precipitation tank is used, a concentrated solution medium and a proper amount of ethyl alcohol are input into the tank body, a servo motor is started, a connecting rotating rod is made to rotate, the stirring impeller is driven to conduct stirring, the scraping strip scrapes the medium sinking to the bottom of the tank, and mixing and stirring are conducted; the ultrasonic generator is started to work, the energy converter converts electric energy into mechanical energy, high-frequency vibration is generated to accelerate the dissolving process of particles in a concentrated solution medium, the stirring impeller evenly mixes the dissolved solution, and therefore the overall dissolving speed is increased, the production efficiency is improved, and waste of the concentrated solution medium is avoided.

A first energy converter that can consume a first physical energy form of a first energy delivery network can be controlled to produce a second physical energy form of a second energy delivery network and inject the second physical energy form into the second energy delivery network. A second energy converter that can consume the second physical energy form of the second energy delivery system can be controlled to produce the first physical energy form of the first energy delivery network and inject the first physical energy form into the first energy deliver network. The controlling of the first energy converter and the controlling of the second energy converter can be coordinated. Related apparatus, systems, techniques and articles are also described.

The utility model relates to a simple automatic harvesting intelligent all-in-one machine for root crops, which comprises a machine base structure, a roller component, a root crop harvesting and sorting structure and an electric control structure, and the root crop harvesting and sorting structure comprises a crop harvesting and conveying mechanism and a crop sorting and conveying mechanism. The crop harvesting and conveying mechanism comprises a crop lifting and conveying frame structure, a crop clamping device arranged on the upper portion of the crop lifting and conveying frame structure, a soil loosening mechanism arranged at the side end of the bottom of the machine base structure and a crop mud removing mechanism arranged below the crop lifting and conveying frame structure. The electric control structure comprises a main drive stepping motor arranged on the upper portion of the machine base structure and the idler wheel assembly, an energy converter arranged on the upper portion of the machine base structure, a clamping drive motor arranged on the crop lifting conveying frame structure and a solar conversion plate arranged on the upper portion of the crop lifting conveying frame structure. The agricultural production efficiency is improved, the labor cost is reduced, and agricultural technical innovation is promoted.

The invention discloses an ultrasonic small probe water bladder catheter for an endoscope. The tail end of a water bag catheter is provided with a water bag, the water bag is oval, the front end of the water bag catheter is Y-shaped, a small ultrasonic probe is inserted from one opening of the Y-shaped catheter, a super energy converter of the small ultrasonic probe penetrates through a catheter cavity of the water bag catheter and then reaches the water bag, the other opening of the Y-shaped catheter is a water injection end, the water injection end is connected with an upper spiral connector, and the lower spiral connector is connected with a lower spiral connector. The upper spiral connector is connected with the lower spiral connector through the valve, the lower spiral connector is connected with the injector, the water injection end is connected with an inner cavity arranged in a pipe cavity of the water bag catheter, and water is injected into the water bag through the inner cavity. When the small probe is used for ultrasonic examination, the small probe is inserted into the water bag catheter, the water bag is filled by the end connected with the injector, the small probe can be developed by rotating in the water bag environment, and a large amount of water does not need to be injected into a gastral cavity or an enteric cavity through an endoscope.