41 results about "Test facility" patented technology

The invention provides a diffuser inlet speed distribution simulation device and full-ring combustion chamber test equipment. The diffuser inlet speed distribution simulation device comprises a current limiting ring; the flow limiting ring is provided with a plurality of openings evenly distributed in the circumferential direction of the flow limiting ring. The opening is symmetrical relative to the radial direction of the flow limiting ring, and on the section perpendicular to the axial direction of the flow limiting ring, the opening is provided with an opening outer edge, an opening inner edge and two opening side edges connected with the opening outer edge and the opening inner edge; the outer edge of the opening is a straight line perpendicular to the radial direction of the flow limiting ring or an arc line with the center of the flow limiting ring as the center, and the distance between the two end points of the outer edge of the opening in the circumferential direction of the flow limiting ring is a first distance a. The inner edge of the opening is a straight line perpendicular to the radial direction of the flow limiting ring or an arc line with the center of the flow limiting ring as the center, and the distance between the two end points of the inner edge of the opening in the circumferential direction of the flow limiting ring is a second distance b. The maximum distance between the edges of the two opening sides in the direction perpendicular to the radial direction of the flow limiting ring is a third distance c; and cgt; a, and cgt; b.

According to the cavitation water tunnel test facility shafting structure deformation strain monitoring system and method, measuring points L1 and R1 are arranged on the portions, close to the impeller direction, of two horizontal supporting plates of a supporting base respectively, measuring points L2 and R2 are arranged on the portions, close to the motor direction, of the two horizontal supporting plates of the supporting base respectively, measuring points L3 are arranged above the horizontal supporting plate on the upper side of a vertical supporting plate, and measuring points L2 and R2 are arranged above the vertical supporting plate on the lower side of the vertical supporting plate. A measuring point R3 is arranged below the horizontal supporting plate on the lower side, strain gauges are arranged on the measuring points, the strain of the six measuring points is epsilon L1, epsilon R1, epsilon L2, epsilon R2, epsilon L3 and epsilon L3, the strain of the side close to the impeller is u1, the strain of the side close to the motor is u2, the strain of the two sides of the vertical supporting plate is u3, and the displacement of abrasion caused by repeated friction between the bearing and the rear water lubrication sleeve and the displacement of abrasion caused by repeated friction between the bearing and the front water lubrication sleeve are u1 and u2. Displacements generated by the descending of the bearing on the point positions of the rear support and the front support in the cylinder are respectively 1 and 2, and the settlement displacement generated by the motor end of the bearing structure is d; the strain composition actually monitored by a measuring point on the cylinder outer supporting base is included.

The embodiment of the invention relates to the field of processes specially used for manufacturing a reactor or parts thereof, in particular to an assembling and charging testing method of a reactor using bulk nuclear fuel and the reactor comprising the bulk nuclear fuel. According to the method, loading test is carried out on the reactor by using the test facility after assembly, so that the backup reactivity of the reactor core can be determined, safe assembly and safe criticality of the reactor are realized, and the safety of experimenters is ensured; by gradually adding the partitioned side reflecting layers outside the reactor core formed by the bulk nuclear fuel, the reactor gradually reaches the critical value, the operation risk is reduced, and meanwhile, the critical point can be accurately obtained; after the critical loading of the reactor core is determined, the partitioned side reflecting layers are replaced by the complete side reflecting layers with the same value, so that the influence of gaps existing between the partitioned side reflecting layers can be avoided, and the reaction efficiency of nuclear fuel is improved. The reactor assembled according to the method has high neutron economy and low critical risk.

The invention relates to the technical field of nuclear facility pipeline heating. The invention provides a pipeline heating device and an in-reactor test facility. The pipeline heating device comprises a magnetic conduction layer, a heat conduction layer, a heat preservation layer and an electromagnetic induction coil, the magnetic conduction layer is made of a magnetic alloy material, and the magnetic conduction layer is enclosed and internally forms a heating area used for containing a pipeline; the heat conduction layer is located on the side, facing the heating area, of the magnetic conduction layer and used for transmitting heat of the magnetic conduction layer to the pipeline. The heat preservation layer wraps the side, away from the heating area, of the magnetic conduction layer. The electromagnetic induction coil is wound around the side, away from the heating area, of the heat preservation layer. The magnetic conductive layer made of the magnetic alloy material serves as a main absorption and conversion carrier of magnetic field energy, the eddy current effect can be remarkably enhanced, the problem that the heating efficiency is insufficient due to low magnetic conductivity of the austenitic stainless steel pipeline is solved, and the heating efficiency is greatly improved. The arrangement of the magnetic conductive layer can fundamentally avoid material microscopic damage caused by direct action of a magnetic field, and the safety is higher.

This invention discloses a system and method for acquiring simulated on-orbit mission data of remote sensing satellites, used in the comprehensive testing phase of remote sensing satellites to conduct advance testing and verification of satellite functions and performance in ground test facilities. The system, through mission planning and distribution equipment, achieves coordinated control of ground equipment in various locations, ensuring that the equipment can logically coordinate and simulate on-orbit usage in advance, generating mission data with the same format as the actual on-orbit mission data of the remote sensing satellite. Furthermore, through a mission data coordination and receiving device, the system can aggregate the data received from various ground equipment, perform simultaneous interpretation, and confirm the correctness of the remote sensing satellite's on-orbit usage method in advance.

The application provides a thermal turbulence experiment device, which comprises an experiment device and a driving device. The experiment device comprises an experiment body, a cold source and a heat source. The experiment body comprises a ring-shaped main body part and at least two side parts. The at least two side parts are arranged at the side of the ring-shaped main body part and are uniformly and spacedly arranged along the circumferential direction of the ring-shaped main body part. The side parts are provided with fan-shaped convection cavities containing working medium. The side parts comprise a heat-conducting inner plate and a heat-conducting outer plate which are oppositely arranged along the radial direction of the ring-shaped main body part. The cold source is connected to the heat-conducting inner plate and is used for cooling the heat-conducting inner plate. The heat source is connected to the heat-conducting outer plate and is used for heating the heat-conducting outer plate. The driving device is connected to the experiment device and is used for driving the experiment device to rotate around the central axis of the ring-shaped main body part, so that a higher Rayleigh number can be achieved.

A kind of laboratory quantification permeation flow capacity device, comprising: displacement liquid filling bottle for filling displacement liquid, the top of displacement liquid filling bottle is erected with displacement liquid level gauge communicated with its cavity;Oil filling bottle for filling crude oil, the top of oil filling bottle is erected with crude oil level gauge communicated with its cavity;Permeation material holder, which includes holding cylinder, first push glass and second push glass are oppositely arranged in holding cylinder, the first push glass is fixedly connected relative to holding cylinder, the second push glass is axially movable relative to holding cylinder, glass gasket with aperture and permeation material fixed by glass gasket are arranged between first push glass and second push glass.The laboratory quantification permeation flow capacity device of the present application is simple and durable, and the operation method is simple, which provides test facilities for exploring the mechanism of reservoir fluid multi-effect synergistic oil displacement experiment, and enriches the test method for verifying the permeation capacity of permeation material.

The invention provides a load-adjustable chain wear comparison test device, and relates to the technical field of chain detection test facilities, the load-adjustable chain wear comparison test device comprises a comparison test bench, a control panel is installed in front of the comparison test bench, and a linkage rotating shaft is rotatably connected above the comparison test bench through a support; three power meters are installed on the linkage rotating shaft in an interference fit mode, driving chain wheels are installed outside the power meters in an interference fit mode, a driving motor is arranged above the comparison test bench, the driving motor is connected with and drives the linkage rotating shaft, and three distance adjusting modules are installed on the comparison test bench; the position of the weight sliding block can be adjusted through stretching and retracting of the torque adjusting push cylinder, the distance between the lever connecting shaft and the weight sliding block is increased or decreased, the pushing and jacking force applied to the load adjusting jacking block by the left end of the brake lever is changed by changing the length of the power arm, and then the rotating resistance of the load adjusting disc is accurately adjusted. Stepless adjustment of the chain transmission load is achieved, and the accuracy of the chain abrasion test is better improved.

The invention discloses N600 automatic monitoring control system complete equipment and a method, and belongs to the technical field of power system secondary circuit monitoring. The equipment comprises an automatic monitoring control device and a test facility modularization device which are integrated in the same screen cabinet. The test device comprises an operation branch and a test branch which are connected in parallel, the operation branch is provided with a current transformer and a controllable switch, and the test branch is additionally provided with a program-controlled variable resistor unit. The control device controls the switch and the resistor by collecting branch current and executes automatic detection logic. According to the invention, real-time on-line monitoring, full-automatic periodic testing, intelligent analysis and judgment and remote alarm of the one-point grounding state of the secondary circuit N600 of the voltage transformer of the transformer substation are realized, a traditional manual testing mode is replaced, the problems of monitoring blind areas, high operation risk, low efficiency and high operation and maintenance cost are solved, and the safety and intelligent level of a power grid are improved.

The invention relates, among other things, to a test device.According to the invention, the test device (TE1, TE2, TE101-TE104, TE201-TE202) comprises: a first feed-in device (E1v, E1f) for applying a first coded test signal (T1v, T1f) between a first terminal (A1v, A1f) and a reference terminal, a first measuring device (M1v, M1f) suitable for measuring a first measurement signal (MS1v, MS1f) that is at least partially caused by the first coded test signal and influenced by any ground fault in a connecting line connected to the first terminal, and a first evaluation device (AUS1v, AUS1f) that subjects the first measurement signal and the test signal to a first correlation check, generating a first correlation signal, and, in the event of a change in the amplitude of the first correlation signal beyond a predetermined correlation-related measure, concludes that there is a ground fault and a first Error signal (F1v, F1f) generated.

The invention provides a configurable intelligent household electrical appliance data consistency test method and system, and the method comprises the steps: configuring protocol information corresponding to a to-be-tested device, the protocol information comprising a field bit, an attribute name and an attribute description; the intelligent WiFi module and the upper computer software system are connected through a serial port; capturing a device printing log in the intelligent WiFi module according to the keyword and storing the device printing log to a log module; analyzing the device printing log according to the protocol information to obtain local analysis data and a unique identifier; requesting data from a data platform through the unique identifier to obtain data platform analysis data; comparing whether the local analysis data is consistent with the data platform analysis data; if the local analysis data is consistent with the data platform analysis data, judging that the test is passed; and if the local analysis data is inconsistent with the data platform analysis data, determining that the test is not passed, so as to solve the problems of insufficient efficiency, coverage and reliability of the data test.

This application relates to a testing mechanism and equipment. The testing mechanism includes a machine base, an operating module, a clamping module, and a pre-compression module. The machine base has a accommodating position for a carrier used to carry the product under test. The operating module is disposed on the machine base and can move between a first position and a second position. The clamping module and the pre-compression module are both drivenly connected to the operating module. The clamping module is used for clamping and positioning the product under test, and the pre-compression module is used for pre-compression positioning of the carrier. When the operating module moves to the first position, the clamping module and the pre-compression module abut against the product under test and the carrier, respectively. When the operating module moves to the second position, the clamping module separates from the product under test, and the pre-compression module separates from the carrier. The testing mechanism provided by this application can link the clamping module and the pre-compression module to simultaneously complete the positioning operation of the product under test and the carrier. The positioning and disassembly operations of the product under test and the carrier are simple and can significantly improve the testing efficiency of the product under test.

The application discloses a modularized turbine moving blade rotating flow and cooling test device, which comprises a test air inlet module, a test air outlet module and a test test module. The test air inlet module is provided with a pre-stage main air flow channel extending along a first direction. The test air outlet module is provided with a post-stage air outlet flow channel extending along the first direction. The test air outlet module and the test air inlet module are arranged at intervals in the first direction. One end of the test test module in the first direction is detachably connected with the test air inlet module. The other end of the test test module in the first direction is detachably connected with the test air outlet module. The test test module is provided with a test cavity, which is suitable for placing a test moving blade. The test air inlet module further comprises a guide vane, which is arranged in the pre-stage main air flow channel and adjacent to the test cavity. The guide vane can rotate around a second direction. The modularized turbine moving blade rotating flow and cooling test device has the advantages of more collected test data and lower test cost.

The invention relates to a method for operating a test device (1) for testing a driver assistance system of an ego vehicle (2), wherein at least one test object (9) is placed on a roadway (3) traveled by the ego vehicle (2) in the direction of travel in front of the ego vehicle (2). It is provided that the at least one test object (9) is arranged on a substrate (7) located at the rear (6) of a test vehicle (5) which travels at least temporarily in the direction of travel in front of the ego vehicle (2) and is held relative to the substrate (7) by means of a holding device, wherein at a specific time the at least one test object (9) is dropped from the substrate (7) to be placed on the roadway (3). The invention further relates to a test device (1) for testing a driver assistance system of an ego vehicle (2) and a test vehicle (5) for a test device (1) for testing a driver assistance system of an ego vehicle (2).

A method for generating a gas stream with a defined amount of nitrogen oxides includes: providing an initial gas stream; introducing a defined amount of ammonia into the initial gas stream; and generating the gas stream by converting the ammonia to nitrogen oxides. An apparatus for generating a gas stream with a defined amount of nitrogen oxides and an exhaust gas purification test facility is also provided.

The invention relates to a test vehicle safe evacuation method and system and electronic equipment. The test vehicle safe evacuation method comprises the steps that a power loading trolley and a vehicle bearing plate trailer used for bearing a test vehicle are provided, during testing, the vehicle bearing plate trailer is located in an environment bin, and the power loading trolley is located outside the environment bin; when the test vehicle is in danger, the power loading trolley is controlled to move to a butt joint position of the vehicle bearing plate trailer; at the butt joint position, a power output component on the power loading trolley is controlled to move to be in transmission connection with a corresponding power execution component on the vehicle bearing plate trailer; and controlling the power output part to transmit power to the power execution part, so that the power execution part moves the vehicle bearing plate trailer bearing the test vehicle out of the environment bin. According to the scheme provided by the invention, after the vehicle is on fire, the vehicle can be moved out of the environment bin and evacuated to a safety area, so that the safety of test facilities and personnel is guaranteed.

This invention relates to the field of ring main unit technology and discloses a ring main unit with a special structure and its usage method, including a cabinet, a secondary box, and a cable compartment. The secondary box is located on the outside of the cabinet, and the cable compartment is located on the back of the cabinet. This invention avoids injury to personnel caused by arcing faults in the cable compartment by placing the cable compartment door at the rear of the cabinet; grounding is achieved outside the cabinet via a test facility bushing connected to the switch grounding inside the gas chamber; the test facility bushing is located in the test facility compartment, and the test facility compartment door is equipped with a duckbill-shaped knife switch, which is connected to the main grounding busbar of the cabinet. When the test facility compartment door is closed, the test facility bushing is connected to the duckbill-shaped knife switch to achieve grounding; when the test facility compartment door is open, the test facility bushing separates from the duckbill-shaped knife switch, and the switch grounding knife switch inside the gas chamber is suspended and not grounded; simultaneously, withstand voltage tests can be performed on the incoming cable through the test facility bushing.

Embodiments of the present application provide a database performance testing method, device and storage medium. The method comprises the following steps: a database performance testing method is suitable for a testing device, and comprises the following steps: requesting a database server to create a database table for performance testing in a database run by the database server; setting a logical relationship about records in the database table; the logical relationship comprises a first logical relationship between fields in a same record in the database table; sending a transaction request for the database table to the database server, so that the database server executes a transaction corresponding to the transaction request, and the transaction request is generated based on the logical relationship; determining whether the database table meets the logical relationship according to a query result for the database table, to obtain a first determination result; and determining whether the database meets a transaction characteristic according to the first determination result. The testing scheme provided by the embodiments of the present application has high reliability.

The utility model belongs to the field of antenna test facilities, particularly relates to a small-size split compact range camera obscura, and aims to solve the problems that the existing camera obscura is large in size, inconvenient to transport and heavy in weight, and the relative position of an internal reflecting surface and a feed source is difficult to adjust. Comprising a camera obscura shell and a shielding door arranged on one side of the camera obscura shell, camera obscura components are arranged in the camera obscura shell, and the camera obscura components comprise a left front lower camera obscura component, a left front upper camera obscura component, a left rear upper camera obscura component, a left rear lower camera obscura component, a right rear upper camera obscura component and a right rear lower camera obscura component. According to the camera obscura, a single assembly is adopted for transportation and installation, compared with a traditional camera obscura, the camera obscura is very convenient to transport and install, meanwhile, field debugging is facilitated, and therefore the practical effect of the camera obscura is greatly improved.

The invention discloses a phased-array antenna beam forming test method in a darkroom-free environment, and relates to the technical field of satellite communication terminal complete machine testing, comprising the steps of initializing test system configuration, setting test parameters, initializing an antenna state, establishing a test environment, and connecting a test antenna with a channel simulator; cross coupling of non-corresponding channels is isolated and reduced through an algorithm, a signal transmission link between a test antenna and a tested antenna is established through a wireless channel by adopting a virtual wire connection mode, non-contact test is realized, beam forming test is performed, a mobile station moves to a preset test area, impedance of the test antenna is adjusted by adopting an electronic tuning mode, and the antenna is tested. The beam former realizes independent control of an uplink and a downlink, analyzes a test result and generates a report, does not need to depend on fixed test facilities such as a microwave anechoic chamber and a calibration tower, can directly test in an actual working scene, and is particularly suitable for field test of mobile equipment such as a large vehicle-mounted phased array system.

A test facility (1A) comprises: a plurality of pipelines connected in an axial direction; at least one drainage part (40A); and at least one stand (51A1-51A2, 52A1-52A6). The plurality of pipelines include a storage pipeline (20A1) for storing water, and hollow pipelines (30A1-30A4) which are pipelines other than the storage pipeline. The storage pipeline (20A1) is located vertically below the hollow pipelines (30A1-30A4). The at least one drainage part (40A) is connected to the storage pipeline (20A1) from a radial direction, and the at least one stand (51A1-51A2, 52A1-52A6) supports the plurality of pipelines above ground.

The present invention relates to the technical field of testing and / or approving fire protection concepts for the storage and / or safekeeping of accumulators. In particular, the present invention relates to a method and a test setup for testing and / or approving fire protection concepts for the storage and / or safekeeping of accumulators, especially for verifying the effectiveness and / or reliability of a fire protection system in the preferably cross-type storage and / or safekeeping of accumulators.

The application relates to a multi-operator configuration file testing method, device and system and a storage medium, which comprises the following steps: obtaining any test information from a server through a first user identification card; the test information comprises card information and first configuration file information of an operator corresponding to the card information; writing the card information into a readable and writable card as a second user identification card; activating the second user identification card to obtain second configuration file information of an operator to which the second user identification card belongs from pre-stored test information of a to-be-tested device; and comparing the first configuration file information and the second configuration file information to test the second configuration file information in the to-be-tested device. According to the method, the second configuration file information in the test information of the to-be-tested device is tested through the readable and writable card, the configuration files of multiple operators can be automatically tested without repeatedly plugging in entity cards of the multiple operators, and the testing efficiency and convenience are improved.

The invention belongs to the field of ship and ocean engineering test facilities and especially discloses a balance method for keeping an anti-floating and anti-tilting state of an underwater walkingmechanism. The method comprises the steps that a balance adjusting structure is arranged, data information influencing a balance state of the underwater walking mechanism is obtained, an unbalance signal of the underwater walking mechanism is pre-judged, a balance adjusting structure is driven to execute a floating increasing instruction, and the floating increasing instruction is adjusted step bystep. Buoyancy adjustment of the underwater walking mechanism is executed through the balance adjusting mechanism, automatic regulation and control can be performed according to data information, obtained by a data analysis end, influencing the balance state of the underwater walking mechanism, and when balance is abnormal, floating increasing adjustment is performed to keep the stable state of the underwater walking mechanism; and the data analysis end is automatically matched to a corresponding buoyancy level according to a range interval where the abnormal signal is located, sends a buoyancy increasing level signal to the balance adjustment structure, and switches to the corresponding buoyancy level so that the controllability is high, and the anti-floating and anti-tilting effects aregood.

The application discloses a test mechanism unit for simulating follow-up thrust generated by an elongated body missile in a flight process; wherein the elongated body missile model comprises an aluminum rod and a test engine; in an initial state, a side column is connected with the second end of the test engine through an explosive bolt, the aluminum rod is bent, and the elongated body missile model is in a deformation state; after the explosive bolt is ignited and separated, the aluminum rod drives the test engine to move to the other side of the support frame, and at the same time, the test engine is ignited to generate follow-up thrust. The application further discloses an engine follow-up thrust vibration test system and method, a camera unit acquires a motion image of the elongated body missile model; a vibration test unit acquires vibration data; and a thrust test unit is used for acquiring the thrust of the elongated body missile model. The application solves the problem that a traditional engine ground static ignition test system cannot generate follow-up thrust, and realizes the simulation of the vibration condition of the elongated body missile after elastic deformation in flight.

The utility model relates to a testing mechanism and aging equipment, the testing mechanism comprises a rotating support, at least one carrier, at least one testing module, a conductive module and a power supply module, the carrier and the testing module are arranged on the rotating support, the carrier is used for bearing a to-be-tested product, and when the to-be-tested product is borne in the carrier, the conductive module is used for supplying power to the to-be-tested product. The test module is in communication connection with a to-be-tested product; the conductive module is electrically connected with the test module and the power supply module, and the conductive module can synchronously rotate along with the rotating support. According to the testing mechanism provided by the invention, the electric energy of the power supply module is transmitted to the testing module through the conductive module, and the conductive module can synchronously rotate along with the rotating bracket, so that the conductive module and the testing module are relatively static; the power supply cable between the conductive module and the test module does not have undesirable phenomena of winding, knotting and the like in the rotating process of the rotating bracket, and power supply and rotating test operations of the to-be-tested product can be synchronously carried out.

The present invention discloses a natural accelerated aging test method for carbon fiber composite materials, comprising: S1, selecting a typical climate environment test station and collecting local climate environment data; S2, building a natural accelerated aging test facility; S3, determining the test parameters of natural accelerated aging based on the local climate environment data, and conducting a natural accelerated aging test; S4, calculating the acceleration ratio of the natural accelerated aging test for the carbon fiber composite material; S5, conducting a mechanical property test on the test sample that has completed the natural accelerated aging test, obtaining the mechanical property change data of the test sample, and estimating the performance change of the test sample under a natural storage environment non-accelerated state in combination with the acceleration ratio. The present invention simulates the actual storage environment of the composite material, utilizes the natural accelerated aging test facility to strengthen the temperature and humidity, high and low temperature cycles and mechanical load conditions to accelerate the aging of the material, and combines the acceleration ratio to make an accurate evaluation of the weather resistance of the carbon fiber composite material under the storage environment.

The utility model relates to a high-rigidity UHPC (Ultra High Performance Concrete) tensile test fixture. The high-rigidity UHPC tensile test fixture comprises a fixture chuck and a variable cross-section connecting rod, wherein the fixture chuck is used for clamping the end part of a test piece; the clamp chuck comprises a top plate, a side plate and a fixing structure with an arc. Side plates are respectively arranged on two sides of the same surface of the top plate; each side plate is a variable cross-section plate with the length gradually shortened from the side close to the top plate to the side away from the top plate, the opposite faces of the variable cross-section plates on the two sides are linear sides, and the opposite faces of the variable cross-section plates away from each other are inclined sides; arc fixing structures are arranged at the ends, away from the top plate, of the linear sides of the side plates correspondingly. The top plate is connected with the variable cross-section connecting rod through a variable cross-section connecting rod fixing hole formed in the face, opposite to the side plate, of the top plate. Compared with the prior art, the clamp provided by the utility model has the characteristic of high rigidity, and when the concrete reaches a peak load, a concrete test block can be prevented from being broken too fast, and a whole-process stress-strain curve of the concrete can be accurately measured.

Embodiments of the present disclosure relate to a method for testing a web application, an apparatus, a device, a medium, and a program product. The method comprises: on the basis of a test case, acquiring a target request sent by a web client of the web application to a server side of the web application. The method further comprises: on the basis of the target request, determining whether a traffic file corresponding to the web application is present. The method further comprises: in response to the presence of the traffic file corresponding to the web application, determining whether the test case has been updated. The method further comprises: in response to the fact that the test case has not been updated, on the basis of the traffic file, returning target return content corresponding to the target request to the web client, so as to complete the testing of the web application. By means of the method, the traffic file is used at a testing device to return the target return content corresponding to the target request, thereby achieving interception of a network request, reducing the dependence on a server or a network during web application testing, improving the stability and accuracy of testing, and improving the user experience.

The invention provides thermal turbulence experimental equipment. The thermal turbulence experimental equipment comprises an experimental device and a driving device, the experimental device comprises an experimental body, a cold source and a heat source, the experimental body comprises an annular main body part and at least two side parts, and the at least two side parts are arranged on the side of the annular main body part and are evenly distributed in the circumferential direction of the annular main body part at intervals. And the side part is provided with a fan-shaped convection cavity for accommodating a working medium. The side part comprises a heat conduction inner plate and a heat conduction outer plate which are oppositely arranged in the radial direction of the annular body part. The cold source is connected to the heat conduction inner plate and used for cooling the heat conduction inner plate. The heat source is connected to the heat-conducting outer plate and used for heating the heat-conducting outer plate. And the driving device is connected to the experimental device and is used for driving the experimental device to rotate by taking the central axis of the annular main body part as an axis, so that a higher Rayleigh number can be realized.