A test system and method for dynamic sealing of a wave glider underwater turning device

Abstract

The application relates to the technical field of wave glider detection equipment, in particular to a test system and method for dynamic sealing of a wave glider underwater turning device, wherein the system comprises a pressure cylinder and a water-tight test box arranged in the pressure cylinder, and a prompt device is arranged on the water-tight test box; the water-tight test box comprises a control cabin and a plurality of test cabins; a liquid detection device is arranged in the test cabin and used for triggering the prompt device when liquid is detected; a sealing test piece mounting hole and a sealing device are arranged on the side surface of the test cabin, a rotary sealing mechanism of the sealing test piece is sealed and mounted in the sealing test piece mounting hole through the sealing device; a turning power output device is arranged in the control cabin and comprises a plurality of power output shafts which are connected with one end of a main shaft of the sealing test piece in the test cabin through through holes, and the through holes are provided with rotary sealing devices. The scheme can effectively quantitatively reflect the sealing performance of the sealing test piece, improve the precision and efficiency of the test, and reduce the test cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wave glider detection equipment, in particular to a test system and method for dynamic sealing of a wave glider underwater turning device. BACKGROUND

[0002] A wave glider is a new type of offshore unmanned platform driven by waves and powered by solar energy. The wave glider is composed of a water surface boat body and an underwater glider, and the water surface boat body and the underwater glider are connected by a flexible umbilical cable. The water surface boat body is mostly floating on the water surface, while the underwater glider functions to convert vertical motion into horizontal motion to drag the water surface boat body forward and achieve the turning function through the turning device at the tail. Therefore, the underwater glider needs to work underwater, and when encountering severe sea conditions, the water surface boat body may be submerged 1-2 meters underwater. The underwater glider works in a water depth of 7-8 meters underwater, and the turning device must have a sealing design requirement for working in a water depth of more than 10 meters. Therefore, both the underwater glider and the water surface boat body need to be sealed.

[0003] The existing sealing forms of the wave glider include static sealing and dynamic sealing. Because the water surface boat body is mostly floating on the water surface, it is only possible to be submerged 1-2 meters underwater when encountering severe sea conditions. Therefore, the equipment cabin and the battery cabin on the water surface boat body only need to be designed for static sealing in a water depth of 2 meters. However, the underwater glider works in a water depth of 7-8 meters underwater, and the turning device must have a sealing design requirement for working in a water depth of more than 10 meters. Moreover, the turning device moves in water, so the turning device adopts dynamic sealing.

[0004] The strength of the dynamic sealing depends on the sealing performance of the sealing test piece, which includes a main shaft, a rotating sealing structure, and a rudder piece connected to one end of the main shaft. The main shaft passes through the rotating sealing structure. The sealing test piece relies on the rotating sealing structure to ensure sealing performance. Therefore, researchers use different sealing design methods to design the internal structure of the rotating sealing structure. To obtain the sealing performance of the designed sealing test piece, a sealing test needs to be conducted.

[0005] The existing sealing test methods for the turning device mainly include pressure cylinder water tightness test, pool test, or sea test under real conditions. However, the existing test methods have certain problems:

[0006] 1. The pressure cylinder water tightness test can only statically test the pressure resistance of the steering device. The pressure cylinder used in the pressure cylinder water tightness test is a fully enclosed container. If the equipment needs to be tested with electricity inside the pressure cylinder, a cable needs to be passed through the pressure cylinder and connected to an external power source. However, when the pressure inside the pressure cylinder is high, there is a risk of air leakage and safety issues at the cable hole. Therefore, the steering device cannot be tested with electricity, and the simulation is poor.

[0007] 2. Pool tests can only simulate certain water depth conditions and are complex and costly to operate, and cannot be dynamically adjusted according to different designs;

[0008] 3. Sea trials under real-world conditions require placing the wave glider in a real sea area that meets the sea conditions. This is costly, extremely dangerous, and data collection is difficult, making it impossible to effectively quantify the sealing performance.

[0009] Existing sealing test methods for steering devices have certain problems, which to some extent prevent them from effectively quantifying the sealing performance of the test specimens. Furthermore, they suffer from low test accuracy, high test costs, and low test efficiency.

[0010] Therefore, there is an urgent need for a dynamic sealing test system for the underwater steering device of wave gliders, which can effectively quantify the sealing performance of the sealing specimen, improve the accuracy and efficiency of the test, and reduce the test cost. This will enable users to fully understand the sealing performance and service life of the wave glider before it goes to sea, thereby reducing the risk of loss of the wave glider and the risk of personnel going to sea. Summary of the Invention

[0011] One of the objectives of this invention is to provide a test system for the dynamic sealing of the underwater steering device of a wave glider, which can effectively quantify the sealing performance of the sealing specimen, improve the accuracy and efficiency of the test, and reduce the test cost, so that users can fully understand the sealing performance and service life of the wave glider before it goes to sea, thereby reducing the risk of loss of the wave glider and the risk of personnel going to sea.

[0012] The present invention provides a basic solution one: a test system for dynamic sealing of an underwater steering device for wave gliders, used to test sealed specimens, comprising:

[0013] Watertight test chamber and pressure cylinder;

[0014] The pressure cylinder is equipped with an observation window;

[0015] The watertightness test chamber is housed inside a pressure cylinder, and a warning device is installed on the watertightness test chamber.

[0016] The watertight test chamber includes a control chamber and several test chambers; the test chambers are located on the side of the control chamber, and a through hole is provided between the test chambers and the control chamber.

[0017] The liquid detection device is connected with the indicating device, and is used for triggering the prompting device to give a prompt when liquid is detected.

[0018] The test cabin is provided with a sealing test piece mounting hole and a sealing device on the side surface. The rotary sealing mechanism of the sealing test piece is sealed and mounted in the sealing test piece mounting hole through the sealing device. The rudder blade of the sealing test piece is located outside the test cabin.

[0019] The control cabin is provided with a steering power output device. The steering power output device comprises a plurality of power output shafts. The power output shafts are connected with one end of the main shaft of the sealing test piece in the test cabin through the through hole, and the through hole is provided with a rotary sealing device.

[0020] The beneficial effects of the first basic scheme are as follows: first, according to the test requirements, the rotary sealing mechanism of the sealing test piece is sealed and mounted in the sealing test piece mounting hole through the sealing device on the side surface of the corresponding test cabin. The rudder blade of the sealing test piece is located outside the test cabin. The power output shafts are connected with one end of the main shaft of the sealing test piece in the test cabin through the through hole, so as to provide steering power for the sealing test piece. The through hole is provided with a rotary sealing device to prevent water from entering the control cabin through the through hole and causing damage to the steering power output device in the control cabin during the test. According to the test requirements, a plurality of sealing test pieces can be installed at the same time to meet the requirements of comparative test of multiple sealed test pieces or multiple sealing designs at the same time.

[0021] Then, according to the test requirements, water is added in the pressure cylinder and the pressure in the pressure cylinder is controlled to simulate the pressure of the water depth where the sealing test piece is located under real sea conditions. The steering power output device is started to provide steering power for the sealing test piece. At the same time, the steering power output device is also used to control the swing of the rudder blade in the sealing test piece, so as to simulate the sealing performance of the sealing test piece of the wave glider steering device in the dynamic rotation process under water. Compared with sea test, it is more convenient and avoids the occurrence of various uncertain events in normal sea test.

[0022] Finally, through the observation window arranged on the pressure cylinder, the oscillation of the rudder and the prompting of the prompting device are observed and recorded. Since the test cabin is provided with a liquid detection device connected with the indicating device, if there is a problem in the sealing performance of the sealing test piece, water will enter the test cabin, so that the liquid detection device will detect the liquid and trigger the prompting device to prompt, so that whether the test cabin is filled with water can be judged according to whether the prompting device prompts. The user can analyze the sealing performance of the sealing test piece according to the obtained oscillation of the rudder and the prompting of the prompting device, and the oscillation of the rudder and the prompting of the prompting device can be quantified, so as to effectively quantify the sealing performance of the sealing test piece. By adjusting the pressure of the pressure cylinder, the steering power output device controls the oscillation of the rudder in the sealing test piece, etc., the performance parameters such as the rotation angle, pressure resistance and service life required by the sealing test piece can be studied separately.

[0023] The system can discover and handle problems in the test process in time, avoid the loss of the wave glider due to problems or failures in the sea test process, reduce the risk of equipment loss and personnel sea risk, and improve the test efficiency in the research and development process.

[0024] In summary, the scheme can effectively quantify the sealing performance of the sealing test piece, improve the accuracy and efficiency of the test, reduce the test cost, provide valuable test data for the sealing test piece and its design method, perfect the theoretical model, and judge the sailing ability of the wave glider in various sea conditions, so that the user can fully master the sealing performance and service life of the wave glider before it goes to sea, and reduce the risk of loss of the wave glider and personnel sea risk.

[0025] Further, the sealing device comprises a flange and a sealing structure.

[0026] The flange is fixedly installed on the sealing test piece mounting hole on the side of the test cabin, and the rotary sealing structure is fixedly installed in the inner hole of the flange.

[0027] The sealing structure is arranged in the inner hole of the flange to seal the rotary sealing structure and the flange, and comprises one or more of an oil seal structure, a mechanical seal structure and a magnetic chain seal structure.

[0028] Beneficial effects: the flange is fixedly installed on the sealing test piece mounting hole on the side of the test cabin, facilitating the installation of the rotary sealing structure, and the sealing structure is arranged in the inner hole of the flange to seal the rotary sealing structure and the flange, preventing the gap before the inner hole of the flange and the rotary sealing structure from causing incorrect test results. As a sealing device, the flange has low cost, and if no sealing test piece is installed in the sealing test piece mounting hole, a flange plug can be installed in the flange to seal the flange.

[0029] Further, the steering power output device further comprises a linear motor, a rack and pinion, and a controller.

[0030] The controller is connected with the linear motor and used for controlling the movement of the linear motor.

[0031] The rack and pinion is slidingly installed in the control cabin and connected with the linear motor on the side surface.

[0032] The power output shaft adopts a gear shaft, the gear shaft is engaged with the rack and pinion, and the gear shaft is connected with one end of the main shaft of the sealed test piece in the test cabin through a shaft coupling and a rotating sealing device in the through hole.

[0033] Beneficial effects: The controller controls the movement of the linear motor, the linear motor drives the rack and pinion to slide, the rack and pinion drives the gear shaft to rotate, and the gear shaft drives the main shaft to rotate, thereby controlling the oscillation frequency and direction of the rudder blade and dynamically adjusting the movement of the rudder blade.

[0034] Further, the rotating sealing device comprises an oil seal and a bearing.

[0035] Beneficial effects: The rotating sealing device comprises an oil seal and a bearing, which not only ensures the rotation of the power output shaft, but also plays a sealing role to prevent water from entering the control cabin when the test cabin is filled with water, thereby preventing the damage of the devices in the control cabin.

[0036] Further, the control cabin is provided with a magnetic sensitive switch and a through-cabin connector on the side surface.

[0037] The magnetic sensitive switch and the through-cabin connector are connected with the controller.

[0038] The magnetic sensitive switch is used for controlling the opening and closing of the controller.

[0039] The through-cabin connector is used for connecting other devices with the controller.

[0040] Beneficial effects: The magnetic sensitive switch facilitates the opening and closing of the controller, and the through-cabin connector facilitates the connection of other devices with the controller, thereby facilitating the functional expansion of the test system.

[0041] Further, the test system further comprises a rack and a pressure-resistant battery cabin.

[0042] The water-tight test box is installed on the rack.

[0043] The pressure-resistant battery cabin is fixedly installed in the middle of the rack.

[0044] The pressure-resistant battery cabin is connected with the through-cabin connector through a waterproof cable.

[0045] Beneficial effects: The water-tight test box is installed on a rack, sufficient height space is provided for rudder selection, the pressure-resistant battery cabin is fixedly installed in the middle of the rack, and is connected with the cabin-penetrating connector on the control cabin through a waterproof cable, power is provided for the steering power output device, the pressure cylinder water-tight test can only statically test the pressure resistance of the steering device, the system can test with power on, the simulation is improved, and the cable does not need to penetrate the pressure cylinder and be connected with the external power supply, so that air leakage and safety risks of the penetration hole when the pressure in the pressure cylinder is large are avoided, and the waterproof function is achieved.

[0046] Further, the control cabin comprises a control cabin body and a control cabin cover; the open end of the control cabin body is connected with the control cabin cover through a first sealing ring;

[0047] The test cabin comprises a test cabin body and a test cabin cover; the open end of the test cabin body is connected with the test cabin cover through a second sealing ring.

[0048] Beneficial effects: The first sealing ring and the second sealing ring guarantee the sealing property of the connection, and the control cabin body and the control cabin cover and the test cabin body and the test cabin cover are arranged, so that the devices in the control cabin and the test cabin can be adjusted and overhauled.

[0049] The second purpose of the application is to provide a test method for dynamic sealing of a wave glider underwater steering device.

[0050] The application provides a second basic scheme: a test method for dynamic sealing of a wave glider underwater steering device, which adopts the test system for dynamic sealing of the wave glider underwater steering device and comprises the following contents:

[0051] S1, formulating a test standard according to experimental requirements;

[0052] S2, installing a sealing test piece into the test system according to the test standard;

[0053] S3, starting the steering power output device, injecting water into the pressure cylinder to a level higher than the top surface of the water-tight test box;

[0054] S4, preliminarily checking whether the rudder swing is normal, and if yes, performing S5;

[0055] S5, fixing and sealing the pressure cylinder, and starting the pressure cylinder to regulate the pressure in the pressure cylinder to a preset target range;

[0056] S6, obtaining the running condition of the sealing test piece, wherein the running condition comprises the indication device running condition and the rudder swing condition;

[0057] S7, judging whether the indication device indicates or the rudder swing condition is abnormal according to the running condition, and if yes, performing S8, and if not, performing S11.

[0058] S8, close the pressure cylinder, troubleshoot, determine whether there is a fault, if so, perform S9; if not, perform S10;

[0059] S9, troubleshoot and perform S1;

[0060] S10, determine that the sealing test piece does not meet the test standard;

[0061] S11, determine that the sealing test piece meets the test standard.

[0062] The beneficial effects of the second basic scheme: the method adopts the above-mentioned wave glider underwater turning device dynamic sealing test system,

[0063] First, according to the experimental requirements, the test standard is formulated, and according to the test standard, the sealing test piece is installed into the test system, that is, on the side of the corresponding test cabin, the rotating sealing mechanism of the sealing test piece is sealed and installed in the sealing test piece installation hole through the sealing device, and the rudder of the sealing test piece is located outside the test cabin. The power output shaft passes through the through hole and is connected with one end of the main shaft of the sealing test piece in the test cabin to provide turning power for the sealing test piece, and the through hole is provided with a rotating sealing device to prevent water from entering the control cabin through the through hole during the test process., causing damage to the turning power output device in the control cabin; the system can install several sealing test pieces at the same time, meeting the requirements of simultaneous comparison test of multiple sealed test pieces or multiple sealing designs;

[0064] Then start the turning power output device to provide turning power for the sealing test piece, and also control the swing of the rudder in the sealing test piece through the turning power output device, so as to simulate the sealing performance of the wave glider turning device sealing test piece in the underwater dynamic rotation process. Compared with sea trial, it is more convenient, and various uncertain events in normal sea trial are avoided; water is injected into the pressure cylinder to the top surface of the water-tight test box, and preliminary inspection is carried out to determine whether the swing of the rudder is normal, if so, subsequent test is carried out, which guarantees the accuracy of the subsequent test and also reduces the possibility of disassembling the pressure cylinder after fixing the seal;

[0065] Then fix the seal of the pressure cylinder and start the pressure cylinder to regulate the pressure in the pressure cylinder to the preset target range to simulate the pressure of the water depth where the sealing test piece is located in the real sea state;

[0066] Finally, the running condition of the sealed test piece is obtained, that is, the swinging condition of the rudder and the prompting condition of the prompting device are observed and recorded through the observation window arranged on the pressure cylinder. Because the liquid detection device is arranged in the test cabin and is connected with the indicating device, if the sealing performance of the sealed test piece has a problem, water will enter the test cabin, so the liquid detection device will detect the liquid and trigger the prompting device to prompt, so whether the test cabin is filled with water can be judged according to whether the prompting device prompts. The user can analyze the sealing performance of the sealed test piece according to the obtained swinging condition of the rudder and the prompting condition of the prompting device, and the swinging condition of the rudder and the prompting condition of the prompting device can be quantified, so the sealing performance of the sealed test piece can be effectively quantified. By adjusting the pressure of the pressure cylinder, the steering power output device controls the swinging of the rudder in the sealed test piece, and the performance parameters such as the rotation angle, pressure resistance and service life required by the sealed test piece can be studied separately. Specifically, according to the running condition, it is judged whether the indicating device indicates or the rudder swinging condition is abnormal; if yes, S8 is executed; if no, S11 is executed; S8, the pressure cylinder is closed, and fault diagnosis is performed to judge whether there is a fault; if yes, S9 is executed; if no, S10 is executed; S9, the fault is eliminated, and S1 is executed; S10, it is judged that the sealed test piece does not meet the test standard; S11, it is judged that the sealed test piece meets the test standard, so the test is completed.

[0067] The present scheme performs S4, S8 and S9, which facilitates the discovery and timely processing of faults during the test process, and the system used can also discover and process problems in a timely manner during the test process, avoiding the loss of the wave glider due to problems or faults during the sea test, reducing the risk of equipment loss and personnel sea risk, and improving the test efficiency in the research and development process.

[0068] In summary, the present scheme can effectively quantify the sealing performance of the sealed test piece, improve the accuracy and efficiency of the test, reduce the test cost, provide valuable test data for the sealed test piece and its design method, perfect the theoretical model, and judge the sailing ability of the wave glider in various sea conditions, so that the user can fully master the sealing performance and service life of the wave glider before it goes to sea, thereby reducing the risk of loss of the wave glider and personnel sea risk.

[0069] Further, the test standard includes the sealing design principle of the sealed test piece, the number of sealed test pieces, the rudder rotation angle, the test water depth, the test water pressure and the test time.

[0070] The error between the test water depth and the test water pressure and the water depth and the water pressure in the water area where the sealed test piece is located in the actual sea test is within a preset error range;

[0071] The test time is adjusted by adjusting the swinging frequency of the rudder.

[0072] Beneficial effects: The test standards include the sealing design principle of the sealed test piece, the number of sealed test pieces, the rudder rotation angle, the test water depth, the test water pressure and the test time, not only the sealing performance of the sealed test piece can be obtained, but also the performance parameters such as the rotation angle, the pressure resistance and the service life that the sealed test piece needs to meet can be studied. The error between the test water depth and the test water pressure and the water depth and the water pressure of the water area where the sealed test piece is located in the actual sea test is within the preset error range, so as to improve the authenticity of simulation and the accuracy of test.

[0073] Further, the S4 further comprises: if no, performing S8.

[0074] Beneficial effects: Preliminary inspection is performed before the pressure cylinder is fixed and sealed, so as to judge whether the rudder swing is normal, if not, troubleshooting is performed, so as to prevent the influence on the determination result of whether the sealed test piece meets the test standards. BRIEF DESCRIPTION OF DRAWINGS

[0075] Figure 1 It is a structure schematic view of an embodiment of the test system for the dynamic sealing of the underwater turning device of the wave glider of the application;

[0076] Figure 2 It is a structure schematic view of the internal structure in an embodiment of the test system for the dynamic sealing of the underwater turning device of the wave glider of the application;

[0077] Figure 3 It is a cross-sectional schematic view of the water-tight test box in an embodiment of the test system for the dynamic sealing of the underwater turning device of the wave glider of the application;

[0078] Figure 4 It is a flow schematic view in an embodiment of the test method for the dynamic sealing of the underwater turning device of the wave glider of the application. DETAILED DESCRIPTION

[0079] The following will be further described in detail through specific embodiments:

[0080] The reference signs in the drawings of the specification include: the sealed test piece 1, the water-tight test box 2, the bench 3, the pressure-resistant battery cabin 4, the pressure cylinder 5, the flange 101, the main shaft 102, the rudder 103, the test cabin 201, the test cabin cover 202, the control cabin 203, the control cabin cover 204, the gear shaft 205, the shaft coupling 206, the indicator light 207, the water-sensitive switch 208, the rack slider 209, the guide rail 210, the linear motor 211, the circuit board 212, the cabin-penetrating connector 213, the magnetic-sensitive switch 214, the flange plug 215, the oil seal 216 and the bearing 217.

[0081] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0083] Example 1

[0084] The basic implementation examples are as follows: Figure 1 As shown: A test system for dynamic sealing of an underwater steering device of a wave glider is used to test a sealing specimen 1. The sealing specimen 1 includes: a main shaft 102, a rotary sealing structure, and a rudder 103. The rudder 103 is connected to one end of the main shaft 102, and the main shaft 102 passes through the rotary sealing structure. The system includes: a watertight test chamber 2, a pressure cylinder 5, a test bench 3, and a pressure-resistant battery compartment 4.

[0085] The pressure cylinder 5 is equipped with an observation window; in this embodiment, the observation window is made of glass.

[0086] The watertight test chamber 2 is housed inside the pressure cylinder 5 and includes: a control chamber 203 and several test chambers 201;

[0087] like Figure 2 and Figure 3 As shown, the control cabin 203 includes: a control cabin 203 body and a control cabin cover 204; the open end of the control cabin 203 body is connected to the control cabin cover 204 through a first sealing ring and is fixed by bolts;

[0088] The test chamber 201 includes: a test chamber 201 body and a test chamber cover 202; the open end of the test chamber 201 body is connected to the test chamber cover 202 through a second sealing ring and fixed by bolts; the watertight test chamber 2 is equipped with a prompting device, specifically, the prompting device is an indicator light 207, and the test chamber cover 202 is also equipped with an indicator light 207.

[0089] The test cabin 201 is arranged on the side of the control cabin 203, and a through hole is arranged between the test cabin 201 and the control cabin 203; in the embodiment, the test cabin 201 body and the control cabin 203 body are integrally formed, and each test cabin 201 body is independently arranged on the same side of the control cabin 203 body, and the test cabin 201 bodies are not directly connected;

[0090] A liquid detection device is arranged in the test cabin 201, and the liquid detection device is connected with an indicating device, so as to trigger the prompting device and prompt when the liquid is detected; specifically, in the embodiment, the liquid detection device adopts a water-sensitive switch 208, and the water-sensitive switch 208 is arranged at the bottom of the test cabin 201 body and connected with the indicating lamp 207 arranged on the test cabin cover 202 of the test cabin 201;

[0091] A sealing device and a sealing test piece 1 mounting hole are arranged on the side of the test cabin 201, a rotary sealing mechanism of the sealing test piece 1 is sealingly installed in the sealing test piece 1 mounting hole through the sealing device, and the rudder piece 103 of the sealing test piece 1 is located outside the test cabin 201; wherein the sealing device comprises a flange 101 and a sealing structure; the flange 101 is fixedly installed on the sealing test piece 1 mounting hole on the side of the test cabin 201 through bolts, and a rotary sealing structure is fixedly installed in the inner hole of the flange 101; the sealing structure is arranged in the inner hole of the flange 101 to seal the rotary sealing structure and the flange 101, and comprises one or more of an oil seal 216 sealing structure, a mechanical sealing structure and a magnetic chain sealing structure; in the embodiment, the oil seal 216 sealing structure is adopted; in addition, if the test cabin 201 is not arranged for the test of the sealing test piece 1, a flange plug 215 should be fixedly installed on the corresponding flange 101;

[0092] A steering power output device is arranged in the control cabin 203;

[0093] The steering power output device comprises a linear motor 211, a rack and pinion 209, a controller and a plurality of power output shafts;

[0094] The power output shafts are connected with one end of the main shaft 102 of the sealing test piece 1 in the test cabin 201 through the through hole, and the through hole is provided with a rotary sealing device; wherein the rotary sealing device comprises an oil seal 216 and a bearing 217;

[0095] The controller is connected with the linear motor 211, and is used for controlling the movement of the linear motor 211; in the embodiment, the controller adopts a corresponding circuit board 212 which is fixedly installed in the control cabin 203;

[0096] The rack and pinion 209 is slidingly installed in the control cabin 203 through a guide rail 210 fixedly installed at the bottom of the control cabin 203 body, and the side surface is fixedly connected with the linear motor 211;

[0097] The power output shaft adopts a gear shaft 205, the gear shaft 205 is engaged with a rack slider 209, the gear shaft 205 passes through an oil seal 216 and a bearing 217 in a through hole and is connected with one end of the main shaft 102 of the sealed test piece 1 in the test cabin 201 through a shaft coupling 206.

[0098] The magnetic sensitive switch 214 and the cabin-penetrating connector 213 are installed on the side of the control cabin 203.

[0099] The magnetic sensitive switch 214 and the cabin-penetrating connector 213 are connected with the controller.

[0100] The magnetic sensitive switch 214 is used for controlling the opening and closing of the controller.

[0101] The cabin-penetrating connector 213 is used for connecting other devices with the controller. In the embodiment, the controller adopts a 32-bit microcontroller based on an ARM core with a 512K byte flash memory, and the model is STM32F103VET; the magnetic sensitive switch adopts a reed switch, the model is WB-JS074R normally closed D5*20MM, which is composed of a magnet and a magnetic sensitive contact; when the magnetic sensitive contact approaches the magnet, a small iron plate in the contact drives the contact to close; on the contrary, when the contact is away from the magnet, the contact will be disconnected immediately, so as to control the on-off of the circuit; the cabin-penetrating connector adopts a small-sized 2-core water-tight connector.

[0102] The water-tight test box 2 is fixedly installed on the rack 3, the pressure-resistant battery cabin 4 is fixedly installed in the middle of the rack 3, and the pressure-resistant battery cabin 4 is connected with the cabin-penetrating connector 213 on the control cabin 203 through a waterproof cable; in addition, the water pressure resistance of the pressure-resistant battery cabin 4 is higher than the water depth pressure in the test standard.

[0103] The specific implementation process is as follows: first, according to the test requirements, the rotating sealing mechanism of the sealed test piece 1 is sealed and installed in the sealed test piece 1 installation hole through the sealing device on the side of the corresponding test cabin 201, and the rudder piece 103 of the sealed test piece 1 is located outside the test cabin 201, the power output shaft is connected with one end of the main shaft 102 of the sealed test piece 1 in the test cabin 201 through the through hole, so as to provide steering power for the sealed test piece 1, and the through hole is provided with a rotating sealing device, so as to prevent water from entering the control cabin 203 through the through hole and causing damage to the steering power output device in the control cabin 203 during the test; according to the test requirements, a plurality of sealed test pieces 1 can be installed at the same time to meet the requirements of comparative test of multiple sealed test pieces or multiple sealing designs at the same time.

[0104] Then according to the test requirements, water is added in the pressure cylinder 5 and the pressure in the pressure cylinder 5 is controlled to simulate the pressure of the water depth where the sealing test piece 1 is located in the real sea condition, and the steering power output device is started to provide steering power for the sealing test piece 1, and at the same time, the swinging of the rudder 103 in the sealing test piece 1 is also controlled through the steering power output device, so as to simulate the sealing performance of the wave glider steering device sealing test piece 1 in the process of dynamic rotation under water. Compared with sea test, it is more convenient and avoids the occurrence of various uncertain events in normal sea test.

[0105] Finally, through the observation window arranged on the pressure cylinder 5, the swinging of the rudder 103 and the prompting of the prompting device are observed and recorded. Because the test cabin 201 is provided with a liquid detection device connected with the indicating device, if the sealing performance of the sealing test piece 1 has a problem, water will enter the test cabin 201, so that the liquid detection device will detect the liquid and trigger the prompting device to prompt, so that whether the test cabin 201 is filled with water can be judged according to whether the prompting device prompts. The user can analyze the sealing performance of the sealing test piece 1 according to the obtained swinging of the rudder 103 and the prompting of the prompting device, and the swinging of the rudder 103 and the prompting of the prompting device can be quantified, so as to effectively quantify the sealing performance of the sealing test piece 1. By adjusting the pressure of the pressure cylinder 5 and controlling the swinging of the rudder 103 in the sealing test piece 1 through the steering power output device, the performance parameters such as the rotation angle, pressure resistance and service life required by the sealing test piece 1 can be studied separately.

[0106] The system can discover and handle problems in the process of test, avoid the loss caused by problems or failures of the wave glider in the process of sea test, reduce the risk of equipment loss and personnel sea risk, and improve the test efficiency in the process of research and development.

[0107] Embodiment two

[0108] The embodiment is basically as shown in the accompanying drawings: a test method for dynamic sealing of an underwater steering device of a wave glider, which adopts the test system for dynamic sealing of the underwater steering device of the wave glider and includes the following contents: Figure 4 S1. According to the experimental requirements, a test standard is formulated; wherein the test standard includes: the sealing design principle of the sealing test piece 1, the number of the sealing test piece 1, the rotation angle of the rudder 103, the test water depth, the test water pressure and the test time; the error of the test water depth and the test water pressure with respect to the water depth and the water pressure in the water area where the sealing test piece 1 is located in the actual sea test is within a preset error range; the test time is adjusted by adjusting the swinging frequency of the rudder 103;

[0109] S2. According to the test standard, the sealing test piece 1 is installed into the test system;

[0110] ​

[0111] S3, start the steering power output device through the magnetic sensitive switch 214, inject water into the pressure cylinder 5 to the level higher than the top surface of the water-tight test box 2;

[0112] S4, preliminarily check whether the swing of the rudder blade 103 is normal, if yes, execute S5, if not, execute S8;

[0113] S5, fix and seal the pressure cylinder 5, and start the pressure cylinder 5 to regulate the pressure in the pressure cylinder 5 to the preset target range;

[0114] S6, obtain the running condition of the sealed test piece 1, wherein the running condition includes the running condition of the indicating device and the swing condition of the rudder blade 103;

[0115] S7, according to the running condition, judge whether the indicating device is indicating or the swing condition of the rudder blade 103 is abnormal, if yes, execute S8, if not, execute S11;

[0116] S8, close the pressure cylinder 5, troubleshoot, judge whether there is a fault, if yes, execute S9, if not, execute S10;

[0117] S9, eliminate the fault, and execute S1;

[0118] S10, judge that the sealed test piece 1 does not meet the test standard;

[0119] S11, judge that the sealed test piece 1 meets the test standard.

[0120] In summary, the scheme can effectively quantitatively reflect the sealing performance of the sealed test piece 1, improve the precision and efficiency of the test, reduce the test cost, provide valuable test data for the sealed test piece 1 and its design method, perfect the theoretical model, and judge the sailing ability of the wave glider in various sea conditions, so that the user can fully master the sealing performance and service life of the wave glider before it goes to sea, and reduce the loss risk of the wave glider and the risk of personnel going to sea.

[0121] The above-mentioned are only embodiments of the present application, and the common knowledge of the specific structure and characteristics in the scheme is not described too much herein. The ordinary skilled person in the art knows all the ordinary technical knowledge in the field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before that date. The ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, combined with their own ability. Some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A test system for dynamic sealing of a wave glider underwater turning device, for testing a sealing test piece, characterized in that: The utility model relates to a kind of dynamic sealing test system of underwater steering device of wave glider, including the following contents: Water-tight test box and pressure cylinder are included; An observation window is provided on the pressure cylinder; The water-tight test box is arranged in the pressure cylinder, and a prompt device is provided on the water-tight test box; The water-tight test box includes a control cabin and a plurality of test cabins;The test cabin is arranged on the side of the control cabin, and a through hole is provided between the test cabin and the control cabin; A liquid detection device is arranged in the test cabin, and the liquid detection device is connected with the indicating device, for detecting liquid and triggering the prompt device to prompt when liquid is detected; A sealed test piece mounting hole and a sealing device are provided on the side of the test cabin, and the rotary sealing mechanism of the sealed test piece is sealed and mounted in the sealed test piece mounting hole through the sealing device, and the rudder blade of the sealed test piece is located outside the test cabin; A steering power output device is arranged in the control cabin;The steering power output device includes a plurality of power output shafts;The power output shaft passes through the through hole and is connected with one end of the main shaft of the sealed test piece in the test cabin, and the through hole is provided with a rotary sealing device.

2. The test system for dynamic sealing of wave glider underwater turning device according to claim 1, characterized in that: The sealing device includes a flange and a sealing structure. The flange is fixedly installed on the sealed test piece mounting hole on the side of the test cabin, and the rotary sealing structure is fixedly installed in the inner hole of the flange. The sealing structure is arranged in the inner hole of the flange to seal the rotary sealing structure and the flange, including one or more of an oil seal sealing structure, a mechanical sealing structure and a magnetic chain sealing structure.

3. The test system for dynamic sealing of wave glider underwater turning device according to claim 1, characterized in that: The steering power output device further includes a linear motor, a rack and pinion and a controller. The controller is connected with the linear motor to control the movement of the linear motor. The rack and pinion is slidingly installed in the control cabin, and the side surface is connected with the linear motor. The power output shaft adopts a gear shaft, the gear shaft is engaged with the rack and pinion, and the gear shaft passes through the rotary sealing device in the through hole and is connected with one end of the main shaft of the sealed test piece in the test cabin through a shaft coupling.

4. The test system for dynamic seals of wave glider underwater turning devices of claim 1, wherein: The rotary sealing device includes an oil seal and a bearing.

5. The test system for dynamic sealing of wave glider underwater turning device according to claim 3, characterized in that: A magnetic sensor switch and a through-cabin connector are installed on the side of the control cabin. The magnetic sensor switch and the through-cabin connector are connected with the controller. The magnetic sensor switch is used to control the opening and closing of the controller. The through-cabin connector is used to connect other devices with the controller.

6. The test system for dynamic sealing of wave glider underwater turning device according to claim 5, characterized in that: Further including: A rack and a pressure-resistant battery cabin; The water-tight test box is installed on the rack; The pressure-resistant battery cabin is fixedly installed in the middle of the rack; The pressure-resistant battery cabin is connected with the through-cabin connector through a waterproof cable.

7. The test system for dynamic sealing of wave glider underwater turning device according to claim 1, characterized in that: The control cabin includes a control cabin body and a control cabin cover;The open end of the control cabin body is connected with the control cabin cover through a first sealing ring. The test cabin includes a test cabin body and a test cabin cover;The open end of the test cabin body is connected with the test cabin cover through a second sealing ring.

8. A method of testing the dynamic seal of a wave rider underwater turning device, characterized by: The dynamic sealing test system of underwater steering device of wave glider according to any one of claims 1-7 includes the following contents: S1, according to the experimental requirements, make test standard; S2, according to the test standard, install the sealed test piece into the test system; S3, start the steering power output device, inject water into the pressure cylinder to the level higher than the top surface of the water-tight test box; S4, preliminarily check whether the swing of the rudder blade is normal, if yes, execute S5; S5, fix and seal the pressure cylinder, and start the pressure cylinder to adjust the pressure in the pressure cylinder to the preset target range. S6, obtain the running condition of the sealing test piece, wherein the running condition comprises the running condition of the indicating device and the rudder oscillation condition; S7, according to the running condition, determine whether the indicating device is indicating or the rudder oscillation condition is abnormal; if yes, execute S8; if no, execute S11; S8, close the pressure cylinder, troubleshoot, determine whether there is a fault, if yes, execute S9; if no, execute S10; S9, eliminate the fault, and execute S1; S10, determine that the sealing test piece does not meet the test standard; S11, determine that the sealing test piece meets the test standard.

9. The test method for dynamic sealing of wave glider underwater turning device according to claim 8, characterized in that: The test standard comprises the sealing design principle of the sealing test piece, the number of the sealing test piece, the rudder rotation angle, the test water depth, the test water pressure and the test time; The error between the test water depth and the test water pressure and the water depth and the water pressure in the water area where the sealing test piece is located in the actual sea trial is within a preset error range; The test time is adjusted by adjusting the oscillation frequency of the rudder.

10. The test method for dynamic sealing of wave glider underwater turning device according to claim 9, characterized in that: The S4 further comprises: if no, execute S8.

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