CN112924167A - System for testing internal pressure and external pressure of underwater hydraulic valve and experimental method - Google Patents
System for testing internal pressure and external pressure of underwater hydraulic valve and experimental method Download PDFInfo
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Abstract
The invention relates to an internal and external pressure testing system of an underwater hydraulic valve, which comprises a high-pressure cabin, a sealed cabin temperature control system, a valve hydraulic system, a valve pressurizing system and a data integration and monitoring system, wherein the high-pressure cabin is integrally arranged in the sealed cabin temperature control system, the valve hydraulic system is connected with a hydraulic valve to be tested in the high-pressure cabin through a hydraulic oil pipeline, and the valve pressurizing system is connected with the hydraulic valve to be tested in the high-pressure cabin through a high-pressure pipeline. The system for testing the internal pressure and the external pressure of the underwater hydraulic valve can simulate the normal working state of water or air ventilation of the underwater hydraulic valve in a deep water environment for the underwater valve; the device is widely applicable to simulating a deep-sea high-pressure low-temperature environment, and is used for simultaneously carrying out internal and external pressure test and function test on the underwater hydraulic valve and carrying out data acquisition and monitoring.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a system and an experimental method for testing the internal pressure and the external pressure of an underwater hydraulic valve.
Background
With the increasing scarcity of land resources, the ocean will become one of the most important research areas. The underwater valve is a key component of underwater facilities in ocean engineering, and with the continuous progress of deep water technology, the demand of the underwater facilities, particularly the underwater valve, is gradually increased. For a long time, the market of the underwater valve is always occupied by foreign manufacturers, and the localization of the underwater valve is imperative in order to enhance the manufacturing capability of domestic underwater equipment, reduce the cost and shorten the supply period. The development of underwater valve detection work is a requirement for product quality inspection work under new situations, and has an important technical support effect on the research and manufacture of ocean engineering equipment, underwater production system equipment and submarine mineral resource development equipment developed in China.
The pressure equipment such as the deep water hyperbaric chamber is important equipment for detecting the product quality of underwater equipment, the existing pressure equipment such as the deep water hyperbaric chamber is mainly and independently used for carrying out pressure-resistant structure examination, water tightness test and the like on underwater robots, deep sea equipment and the like, and a set of detection system which can truly and effectively simulate the combined work of the working states of the equipment such as an underwater valve and the like in deep sea cannot be formed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the system and the experimental method can be used for simulating the actual service environment of the deep sea under external pressure for the underwater hydraulic valve, providing the water pressure, air pressure and hydraulic power units in the hydraulic valve and reducing the working states of the underwater equipment such as ventilation pressure, water pressure, valve opening and closing in the deep sea.
This internal and external pressure test system of hydraulic valve under water is including the hyperbaric chamber that is used for holding the hydraulic valve that awaits measuring, be used for doing the hyperbaric chamber provides the pressurized cabin temperature control system of simulation deep sea ambient temperature condition, is used for controlling the valve hydraulic system of the hydraulic valve driver switch that awaits measuring, is used for waiting to measure the valve pressurization system that the hydraulic valve applys interior pressure, is used for testing data acquisition and real time monitoring's data integration and monitored control system, wherein, the hyperbaric chamber is whole to be arranged in the pressurized cabin temperature control system, valve hydraulic system pass through hydraulic pressure oil line with the pressurized cabin is waited to measure the hydraulic valve and is connected, valve pressurization system pass through high-pressure line with the hydraulic valve that awaits measuring in the hyperbaric chamber is connected.
In order to realize the opening and closing control of a valve hydraulic system on a hydraulic valve to be tested in a high-pressure cabin in a test, the inner side end of the hydraulic oil pipeline is connected with a driver of the hydraulic valve to be tested, and the other end of the hydraulic oil pipeline is connected with the valve hydraulic system through an external blind plate of the high-pressure cabin. The valve hydraulic system can set procedures of pressurization and pressure relief of the hydraulic valve in advance, and the opening and closing of the hydraulic valve driver in the high-pressure cabin are completed through the hydraulic oil pipeline. And the blind plate is provided with a pipe hole for the hydraulic oil pipeline and the high-pressure pipeline to be fixedly penetrated.
In order to realize pressurization and pressure relief work of the internal pressure of the hydraulic valve to be tested in the test, the test process of the hydraulic valve under water can be monitored in real time by acquiring data of internal pressure, external pressure, temperature and the like in real time in the test process of the whole cycle test, the high-pressure pipeline comprises a pressurization hose, a pressure relief hose and a monitoring leakage pipeline, the pressurization hose is connected with the valve pressurization system, a pressure relief port at the tail end of the pressure relief hose is connected into a pressure relief water tank, and the monitoring leakage pipeline is connected into a beaker. The real-time conditions of the internal pressure, the external pressure and the high-pressure cabin are controlled by a data integration and monitoring system, and a high-pressure water sealing system is connected to the upstream and the downstream of a hydraulic valve, a pressurizing system and a pressure relief water tank through two high-pressure hoses and blind plates; the pressure in the valve cavity is discharged and decompressed through the decompression hose after the valve driver is opened.
The device comprises a high-pressure sealed cabin structure, wherein a temperature sensor and a first pressure sensor are arranged inside the high-pressure cabin, a skylight for hoisting and disassembling a test sample is arranged on the top of the sealed cabin of a sealed cabin temperature control system, a third pressure sensor is arranged in a valve hydraulic system, and a third pressure sensor is arranged in a valve pressurizing system.
In order to realize the action monitoring and the generation of a real-time integrated curve in the testing process, the temperature sensor, the first pressure sensor in the hyperbaric chamber, the second pressure sensor in the valve hydraulic system and the third pressure sensor in the valve pressurization system are in data communication connection with the data integration and monitoring system. The data integration and monitoring system comprises a monitoring unit and a data integration unit, wherein the monitoring unit comprises two parts, namely a camera and a searchlight which are arranged on a valve hydraulic system are used for carrying out real-time monitoring and video recording on a computer end, and the camera and the searchlight are arranged in the hyperbaric chamber for carrying out real-time monitoring and video recording on the condition in the valve test process in the hyperbaric chamber; the data integration unit obtains the internal and external pressures and temperatures of the experiment in real time at the PC end through a network form to obtain data and curves, when the experiment needs to be started, all devices in the system are started firstly, then pressurization, pressure relief and temperature control programs are preset, and finally the operation process of the whole test can be controlled and monitored in real time at the PC end.
Specifically, the maximum working pressure of the high-pressure cabin is 35 MPa; the test medium is water; the inner diameter is 1500 mm; the internal effective test length is 3000 mm; the pressure maintaining mode is that automatic tracking compensation is carried out according to the pressure change in the pressure cabin, and the error is not more than 0.1 MPa. The temperature control mode of the sealed cabin temperature control system is that a cold storage is built outside the high-pressure sealed cabin, and the cold storage is cooled and is transferred to a water body in the cabin through cabin wall heat; the temperature control range is 1-9 ℃. In the valve hydraulic system, test media are water-based and oil-based hydraulic oil and clear water; output pressure: 0-10000 psi; display precision: 0.01 MPa; and (3) control precision: plus or minus 1 percent; boosting and pressure relief rate: 10 psi/min-500 psi/min; pressure supplementing: automatic pressure compensation and non-pressure compensation can be selected through collusion; volume: the volume of the pressurizing cavity is more than or equal to 100L; the volume of the oil tank is more than or equal to 100L. The high-pressure water sealing system has the following highest output pressure: 600 MPa; test medium: water; the device functions are as follows: the hydrostatic internal pressure is uniformly and continuously applied to the sample, and the pressure value in the sample can be ensured to be kept within +/-1% of a predetermined hydrostatic internal pressure value; experiment channel: the system has 16 channels, each channel is independently adjustable, and each loop can realize the functions of independent control, data acquisition, measurement and the like. The data integration and monitoring system realizes the monitoring and integration work of real-time data such as internal pressure, external pressure, driver pressure, temperature and the like of the valve, displays the data in real time through curves and values, can derive a data chart after the experiment is finished, and realizes the real-time monitoring and observation of the test process through an underwater camera and a searchlight. The hyperbaric chamber provides hydrostatic external pressure corresponding to the working water depth, the sealed cabin temperature control system outside the hyperbaric chamber provides the ambient temperature of underwater work, and the external pressure and the temperature are always stabilized within a required interval during the experiment. The device is used for realizing the reduction of the deep-sea working environment of the hydraulic valve.
The system for testing the internal pressure and the external pressure of the underwater hydraulic valve and the experimental method are realized by the system for testing the internal pressure and the external pressure of the underwater hydraulic valve, and particularly comprise the following steps,
s1: the method comprises the following steps of completely preparing relevant accessories such as a hydraulic valve to be tested, a connecting pipeline and the like, and checking whether each device can normally run or not before testing begins;
s2: opening the hyperbaric chamber, fixing a hydraulic valve to be measured in the hyperbaric chamber, checking the position of an internal interface of the hyperbaric chamber, mounting the measured underwater hydraulic valve on a clamp and connecting the measured underwater hydraulic valve with a corresponding high-pressure pipeline and a corresponding hydraulic oil pipeline of the hyperbaric chamber, then closing the hyperbaric chamber, opening a temperature control system of the sealed chamber, setting the temperature and closing a skylight of the sealed chamber;
s3: after the water temperature in the hyperbaric chamber is stable and the water temperature is confirmed to meet the requirements by the data integration and monitoring system through the temperature sensor, starting a hyperbaric chamber pressurization test, pressurizing the hyperbaric chamber to an external pressure value required by a valve, and starting an automatic pressure maintaining function;
s4: the method comprises the steps that a valve pressurization system is utilized to apply internal pressure with a rated pressure to upstream under the condition that a hydraulic valve to be detected is closed, then the valve hydraulic system is utilized to pressurize a driver of the hydraulic valve to be detected to a specified pressure through a hydraulic oil pipeline, the valve is controlled to be opened by the valve opening hydraulic system to control the valve to be opened, the pressure in a valve cavity can be automatically relieved to 0 after the valve is opened, then the valve cavity of the hydraulic valve to be detected is closed by the valve hydraulic system, the opening and closing states of the hydraulic valve can be observed in real time through a data integration and monitoring system in the process, and real-time pressure and temperature changes can be observed;
s5: and (4) repeating the step (4) for specified times, relieving pressure, opening the cabin, arranging each experimental device, analyzing data, and integrating corresponding curves in real time through a data integration system when each number value in all cycles changes, so as to observe corresponding change rules of the internal pressure of the valve cavity, the external pressure of the high-pressure cabin on the valve, the real-time numerical value of the oil supply pressure of the valve hydraulic system, the temperature and the like along with time.
The underwater hydraulic valve is applied to deep sea and needs to bear external pressure and lower temperature brought by deep sea. The internal and external pressure composite test is to place the underwater hydraulic valve inside the sealed high-pressure cabin to pressurize the inside of the high-pressure cabin and the tested equipment to the required test pressure of the underwater equipment in order to fully simulate the actual working environment of the underwater equipment. And after the experiment is started, maintaining the pressure according to the requirements of customers when the pressure reaches the testing pressure. The underwater hydraulic valve maintains the required external pressure in the hyperbaric chamber while performing hydraulic pressure into the valve. The device can simulate the actual working condition of the underwater valve in deep sea, perform air tightness and water tightness tests and detection, and perform hydraulic control on the underwater hydraulic valve.
The invention relates to an internal and external pressure test system of an underwater hydraulic valve, which overcomes the defect that the existing underwater hydraulic valve detection equipment cannot really and effectively simulate the working state of the underwater hydraulic valve in deep sea, can provide an internal and external pressure power unit for the underwater equipment, simulates the working state of the underwater hydraulic valve in deep sea, is widely suitable for simulating the deep sea high-pressure and low-temperature environment, simultaneously performs internal and external pressure test and function test on the underwater equipment, and performs data acquisition and monitoring, and has the specific beneficial effects that:
(1) the normal working state of water flowing of the underwater hydraulic valve in the deepest 3500-meter water depth environment can be simulated;
(2) the opening or closing of the underwater hydraulic valve driver can be realized by automatically controlling hydraulic pressurization and pressure relief;
(3) the measured hydraulic valve can be monitored in real time through underwater camera shooting and data integration.
Drawings
The invention further discloses an internal and external pressure testing system and an experimental method of an underwater hydraulic valve, which are disclosed by the invention, by combining the accompanying drawings:
FIG. 1 is a schematic plan view of the present system for testing the internal and external pressures of an underwater hydraulic valve;
FIG. 2 is a schematic plane structure diagram of the blind plate of the underwater hydraulic valve internal and external pressure testing system;
fig. 3 is a communication connection schematic diagram of the underwater hydraulic valve internal and external pressure testing system.
In the figure:
0-hydraulic valve to be tested; 1-a hyperbaric chamber, 2-a sealed chamber temperature control system, 3-a valve hydraulic system, 4-a valve pressurization system, 5-a data integration and monitoring system, 6-a hydraulic oil pipeline, 7-a high-pressure pipeline, 8-a pressure relief water pool and 9-a beaker; 11-a blind plate, 111-a pipe hole, 12-a temperature sensor, 13-a pressure sensor, 21-a skylight, 31-a second pressure sensor, 41-a third pressure sensor, 71-a pressurizing hose, 72-a pressure relief hose and 73-a monitoring leakage pipeline.
Detailed Description
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "left", "right", "front", "back", "top", "bottom", "inner", "outer", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Embodiment 1: as shown in fig. 1, the system for testing the internal and external pressures of the underwater hydraulic valve comprises a hyperbaric chamber 1 for accommodating a hydraulic valve 0 to be tested, a sealed chamber temperature control system 2 for providing a condition of simulating the deep sea environment temperature for the hyperbaric chamber 1, a valve hydraulic system 3 for controlling the opening and closing of a driver of the hydraulic valve 0 to be tested, a valve pressurization system 4 for applying the internal pressure to the hydraulic valve 0 to be tested, and a data integration and monitoring system 5 for testing and collecting data and monitoring in real time, wherein the hyperbaric chamber 1 is integrally arranged in the sealed chamber temperature control system 2, the valve hydraulic system 3 is connected with the hydraulic valve 0 to be tested in the hyperbaric chamber 1 through a hydraulic oil pipeline 6, and the valve pressurization system 4 is connected with the hydraulic valve 0 to be tested in the hyperbaric chamber 1 through a high-pressure pipeline 7. Specifically, the high-pressure cabin is connected with a sealed cabin structure, a temperature sensor 12 and a pressure sensor 13 are arranged inside the high-pressure cabin 1, and a skylight 21 for hoisting and disassembling a test sample is arranged at the top of the sealed cabin temperature control system 2. Specifically, the maximum working pressure of the high-pressure cabin is 35 MPa; the test medium is water; the inner diameter is 1500 mm; the internal effective test length is 3000 mm; the pressure maintaining mode is that automatic tracking compensation is carried out according to the pressure change in the pressure cabin, and the error is not more than 0.1 MPa. The temperature control mode of the sealed cabin temperature control system is that a cold storage is built outside the high-pressure sealed cabin, and the cold storage is cooled and is transferred to a water body in the cabin through cabin wall heat; the temperature control range is 1-9 ℃. In the valve hydraulic system, test media are water-based and oil-based hydraulic oil and clear water; output pressure: 0-10000 psi; display precision: 0.01 MPa; and (3) control precision: plus or minus 1 percent; boosting and pressure relief rate: 10 psi/min-500 psi/min; pressure supplementing: automatic pressure supplement and non-pressure supplement can be performed through collusion; volume: the volume of the pressurizing cavity is more than or equal to 100L; the volume of the oil tank is more than or equal to 100L. The high-pressure water sealing system has the following highest output pressure: 600 MPa; test medium: water; the device functions are as follows: the hydrostatic internal pressure is uniformly and continuously applied to the sample, and the pressure value in the sample can be ensured to be kept within +/-1% of a predetermined hydrostatic internal pressure value; experiment channel: the system has 16 channels, each channel is independently adjustable, and each loop can realize the functions of independent control, data acquisition, measurement and the like. The data integration and monitoring system realizes the monitoring and integration work of real-time data such as internal pressure, external pressure, driver pressure, temperature and the like of the valve, displays the data in real time through curves and values, can derive a data chart after the experiment is finished, and realizes the real-time monitoring and observation of the test process through an underwater camera and a searchlight. The hyperbaric chamber provides hydrostatic external pressure corresponding to the working water depth, the sealed cabin temperature control system outside the hyperbaric chamber provides the ambient temperature of underwater work, and the external pressure and the temperature are always stabilized within a required interval during the experiment. The device is used for realizing the reduction of the deep-sea working environment of the hydraulic valve.
Embodiment 2: as shown in fig. 2, in order to realize the opening and closing control of the hydraulic system of the valve on the hydraulic valve to be tested in the hyperbaric chamber during the test, the inner end of the hydraulic oil pipeline 6 is connected with the driver of the hydraulic valve 0 to be tested, and the other end of the hydraulic oil pipeline 6 is connected with the hydraulic system 3 of the valve through the outer blind plate 11 of the hyperbaric chamber 1. The valve hydraulic system can set procedures of pressurization and pressure relief of the hydraulic valve in advance, and the opening and closing of the hydraulic valve driver in the high-pressure cabin are completed through the hydraulic oil pipeline. The blind plate 11 is provided with a pipe hole 111 for the hydraulic oil pipeline 6 and the high-pressure pipeline 7 to be fixedly penetrated. The remaining structure and components are as described in embodiment 1, and the description will not be repeated.
Embodiment 3: in order to realize pressurization and pressure relief work of the internal pressure of the hydraulic valve to be tested in the test, the test process of the hydraulic valve under water can be monitored in real time by acquiring data of internal pressure, external pressure, temperature and the like in real time in the whole test process of the circulation test, the high-pressure pipeline 7 comprises a pressurization hose 71, a pressure relief hose 72 and a monitoring leakage pipeline 73, the pressurization hose 71 is connected with the valve pressurization system 4, a pressure relief opening at the tail end of the pressure relief hose 72 is connected into a pressure relief water tank 8, and the monitoring leakage pipeline 73 is connected into a beaker 9. The real-time conditions of the internal pressure, the external pressure and the high-pressure cabin are controlled by a data integration and monitoring system, and a high-pressure water sealing system is connected to the upstream and the downstream of a hydraulic valve, a pressurizing system and a pressure relief water tank through two high-pressure hoses and blind plates; the pressure in the valve cavity is discharged and decompressed through the decompression hose after the valve driver is opened. The remaining structure and components are as described in embodiment 1, and the description will not be repeated.
Embodiment 4: for monitoring the action of the test process and generating the result, the temperature sensor 12, the first pressure sensor 13 in the hyperbaric chamber, the second pressure sensor 31 of the valve hydraulic system 3 and the third pressure sensor 41 of the valve pressurization system 4 are connected with the data integration and monitoring system 5 in a data communication way. The data integration and monitoring system comprises a monitoring unit and a data integration unit, wherein the monitoring unit comprises two parts, namely a camera and a searchlight which are arranged on a valve hydraulic system are used for carrying out real-time monitoring and video recording on a computer end, and the camera and the searchlight are arranged in the hyperbaric chamber for carrying out real-time monitoring and video recording on the condition in the valve test process in the hyperbaric chamber; the data integration unit obtains internal and external pressure, temperature data and curves of an experiment at a PC end in real time in a network form, when the experiment needs to be started, all devices in the system are started firstly, then pressurization, pressure relief and temperature control programs are preset, and finally the operation process of the whole test can be controlled and monitored at the PC end in real time; the data integration and monitoring system can realize the monitoring and integration work of real-time data such as internal pressure, external pressure, driver pressure, temperature and the like of the valve, and display the data in real time through curves and values, and can derive a data chart after the experiment is finished; the high-pressure cabin provides hydrostatic external pressure corresponding to the working water depth, the sealed cabin temperature control system outside the high-pressure cabin provides the environmental temperature of underwater work, and the external pressure and the temperature are always stabilized in a required interval during the experiment; the device is used for realizing the reduction of the deep-sea working environment of the hydraulic valve. The remaining structure and components are as described in embodiment 1, and the description will not be repeated.
Embodiment 5: as shown in fig. 3, in order to realize remote data transmission and monitoring, the data integration and monitoring system is located in a control room far away from the experimental facility, and receives 4 paths of signals including pressure sensor data and temperature sensor data in the high-pressure cabin, hydraulic data of the valve hydraulic system and internal pressure data of the high-pressure water sealing system, and collects and stores the signals in real time. The data acquisition interval is 1.0 second, the communication protocol is Modbus RTU, the communication is realized by connecting with an upper computer in a way of converting RS485 into USB serial port, local area network, PLC and the like, and the operating system is Windows 7/10. The data integration unit has stable signal acquisition and communication transmission, strong data visualization capability, high integration level, convenient data acquisition after the test is finished and small processing difficulty. The data integration unit is provided with a real-time data display area, and can realize real-time display of 4 paths of signals; a real-time dynamic curve display area is arranged, so that the visualization of the data change trend in the test process can be realized, and the display range is 20 seconds currently; the test data curve display area is arranged, so that the change condition of the historical data in any time period in the test process can be visualized, the historical data of multiple paths of signals can be displayed/selected and displayed completely, the test data curves of different lines can be set in a mode independently, the change trends of different data can be distinguished obviously, and the window is provided with a printing button which can print the curves as required; the historical test data query area is arranged, so that historical data query in any time period in the test process can be realized, and multi-channel signal test data can be completely exported/selectively exported.
Example 1: the system for testing the internal pressure and the external pressure of the underwater hydraulic valve is realized by the system for testing the internal pressure and the external pressure of the underwater hydraulic valve, and comprises the following steps,
s1: the method comprises the steps of completely preparing relevant accessories such as a hydraulic valve 0 to be tested, connecting pipelines and the like, and checking whether each device can normally run or not before testing begins;
s2: opening the high-pressure cabin 1, fixing a hydraulic valve 0 to be tested in the high-pressure cabin 1, checking the position of an internal interface of the high-pressure cabin 1, installing the hydraulic valve 0 to be tested on a clamp and connecting the hydraulic valve with a corresponding high-pressure pipeline and a hydraulic oil pipeline 6 of the high-pressure cabin 1, then closing the high-pressure cabin 1, opening a sealed cabin temperature control system 2, setting the temperature and closing a sealed cabin skylight;
s3: after the water temperature in the hyperbaric chamber 1 is stable and the temperature sensor confirms that the water temperature meets the requirement in the data integration and monitoring system 5, starting a pressurization test of the hyperbaric chamber 1, pressurizing the hyperbaric chamber 1 to an external pressure value required by a valve, and starting an automatic pressure maintaining function;
s4: the method comprises the steps that a valve pressurization system 4 is utilized to apply internal pressure with a rated pressure to upstream under the condition that a hydraulic valve 0 to be detected is closed, then a valve hydraulic system 3 is utilized to pressurize a driver of the hydraulic valve 0 to be detected to a specified pressure through a hydraulic oil pipeline 6, the valve hydraulic system 3 is controlled to open a valve, the pressure in a valve cavity after the valve is opened can be automatically relieved to 0, then the valve hydraulic system 3 is utilized to close the valve cavity of the hydraulic valve 0 to be detected, the hydraulic valve 0 to be detected can be observed in real time in the process through a data integration and monitoring system 5, the starting and closing state of the hydraulic valve can be observed in real time, and real-time pressure and temperature changes can be observed;
s5: and (4) repeating the step (4) for specified times, relieving pressure, opening the cabin, arranging each experimental device, analyzing data, and integrating corresponding curves in real time through a data integration system when each number value in all cycles changes, so as to observe corresponding change rules of the internal pressure of the valve cavity, the external pressure of the high-pressure cabin on the valve, the real-time numerical value of the oil supply pressure of the valve hydraulic system, the temperature and the like along with time.
The underwater hydraulic valve is applied to deep sea and needs to bear external pressure and lower temperature brought by deep sea. The internal and external pressure composite test is to place the underwater hydraulic valve inside the sealed high-pressure cabin to pressurize the inside of the high-pressure cabin and the tested equipment to the required test pressure of the underwater equipment in order to fully simulate the actual working environment of the underwater equipment. And after the experiment is started, maintaining the pressure according to the requirements of customers when the pressure reaches the testing pressure. The underwater hydraulic valve maintains the required external pressure in the hyperbaric chamber while performing hydraulic pressure into the valve. The device can simulate the actual working condition of the underwater valve in deep sea, perform air tightness and water tightness tests and detection, and perform hydraulic control on the underwater hydraulic valve.
The system for testing the internal pressure and the external pressure of the underwater hydraulic valve can provide an internal pressure and external pressure power unit for the underwater valve, and can simulate the normal working state of water or air ventilation of the underwater hydraulic valve in the deepest 3500 m water depth environment; the opening or closing of the underwater hydraulic valve driver can be realized by automatically controlling hydraulic pressurization and pressure relief; can carry out real time monitoring to being surveyed hydraulic valve through making a video recording, data integration, extensively be applicable to simulation deep sea high pressure low temperature environment, carry out interior external pressure test and functional test simultaneously to hydraulic valve under water to data acquisition and control.
The foregoing description illustrates the principal features, rationale, and advantages of the invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments or examples, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The foregoing embodiments or examples are therefore to be considered in all respects illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an internal and external pressure test system of hydraulic valve under water, characterized by: comprises a hyperbaric chamber (1) for accommodating a hydraulic valve (0) to be tested, a sealed chamber temperature control system (2) for providing a condition simulating deep sea environment temperature for the hyperbaric chamber (1), a valve hydraulic system (3) for controlling the opening and closing of a driver of the hydraulic valve (0) to be tested, a valve pressurization system (4) for applying internal pressure to the hydraulic valve (0) to be tested, and a data integration and monitoring system (5) for testing and acquiring data and monitoring in real time, wherein,
the high-pressure cabin (1) is integrally arranged in the sealed cabin temperature control system (2), the valve hydraulic system (3) is connected with a hydraulic valve (0) to be tested in the high-pressure cabin (1) through a hydraulic oil pipeline (6), and the valve pressurization system (4) is connected with the hydraulic valve (0) to be tested in the high-pressure cabin (1) through a high-pressure pipeline (7).
2. The system for testing the internal and external pressures of an underwater hydraulic valve as claimed in claim 1, wherein: the inner side end of the hydraulic oil pipeline (6) is connected with the driver of the hydraulic valve (0) to be tested, and the other end of the hydraulic oil pipeline (6) is connected with the valve hydraulic system (3) through a high-pressure cabin (1) external blind plate (11).
3. The system for testing the internal and external pressures of the underwater hydraulic valve as recited in claim 2, wherein: the blind plate (11) is provided with a pipe hole (111) for the hydraulic oil pipeline (6) and the high-pressure pipeline (7) to be fixedly penetrated.
4. The system for testing the internal and external pressures of an underwater hydraulic valve as claimed in claim 1, wherein: high-pressure pipeline (7) include pressurization hose (71), pressure release hose (72) and monitoring leakage pipeline (73), pressurization hose (71) with valve pressurization system (4) are connected, the terminal pressure release mouth of pressure release hose (72) inserts pressure release pond (8), monitoring leakage pipeline (73) insert beaker (9).
5. The system for testing the internal and external pressures of the underwater hydraulic valve as recited in claim 4, wherein: the device is characterized in that a temperature sensor (12) and a first pressure sensor (13) are arranged inside the high-pressure cabin (1), a skylight (21) used for hoisting and disassembling a test sample is opened at the top of the sealed cabin temperature control system (2), a third pressure sensor (31) is arranged in the valve hydraulic system (3), and a third pressure sensor (41) is arranged in the valve pressurization system (4).
6. The system for testing the internal and external pressures of the underwater hydraulic valve as recited in claim 5, wherein: the temperature sensor (12), the first pressure sensor (13) in the high-pressure cabin (1), the second pressure sensor (31) of the valve hydraulic system (3) and the third pressure sensor (41) of the valve pressurization system (4) are in data communication connection with the data integration and monitoring system (5).
7. A system for testing the internal and external pressures of an underwater hydraulic valve and an experimental method are characterized in that: the experimental method is realized by the internal and external pressure test system of the underwater hydraulic valve as claimed in any one of claims 1 to 6, and comprises the following steps,
s1: the method comprises the steps of completely preparing relevant accessories such as a hydraulic valve (0) to be tested, connecting pipelines and the like, and checking whether each device can normally run or not before testing begins;
s2: opening the high-pressure cabin (1), fixing a hydraulic valve (0) to be tested in the high-pressure cabin (1), checking the position of an internal interface of the high-pressure cabin (1), installing the hydraulic valve (0) to be tested on a clamp and connecting the hydraulic valve with a corresponding high-pressure pipeline and a hydraulic oil pipeline (6) of the high-pressure cabin (1), then closing the high-pressure cabin (1), opening a sealed cabin temperature control system (2), setting the temperature and closing a sealed cabin skylight;
s3: after the temperature of water in the hyperbaric chamber (1) is stable and the temperature sensor confirms that the water temperature meets the requirements in the data integration and monitoring system (5), starting a pressurization test of the hyperbaric chamber (1), pressurizing the hyperbaric chamber (1) to an external pressure value required by a valve, and starting an automatic pressure maintaining function;
s4: the method comprises the steps that a valve pressurization system (4) is utilized to apply internal pressure with a rated pressure to upstream under the condition that a hydraulic valve (0) to be detected is closed, then a valve hydraulic system (3) is utilized to pressurize a driver of the hydraulic valve (0) to be detected to a specified pressure through a hydraulic oil pipeline (6), the valve hydraulic system (3) for opening the valve is controlled to open the valve, the pressure in a valve cavity is automatically relieved to 0 after the valve is opened, then the valve hydraulic system (3) is utilized to close the valve cavity of the hydraulic valve (0) to be detected, the hydraulic valve (0) to be detected can be observed in real time through a data integration and monitoring system (5) in the process, the starting and closing states of the hydraulic valve can be observed in real time, and real-time pressure and temperature changes can be observed;
s5: and (4) repeating the step (4) for specified times, relieving pressure, opening the cabin, arranging each experimental device, analyzing data, and integrating corresponding curves in real time through a data integration system when each number value in all cycles changes, so as to observe corresponding change rules of the internal pressure of the valve cavity, the external pressure of the high-pressure cabin on the valve, the real-time numerical value of the oil supply pressure of the valve hydraulic system, the temperature and the like along with time.
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