CN114755105A - Hydraulic pressure steel pipe hydrostatic test intelligent measurement and control system and method - Google Patents
Hydraulic pressure steel pipe hydrostatic test intelligent measurement and control system and method Download PDFInfo
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- CN114755105A CN114755105A CN202210281643.2A CN202210281643A CN114755105A CN 114755105 A CN114755105 A CN 114755105A CN 202210281643 A CN202210281643 A CN 202210281643A CN 114755105 A CN114755105 A CN 114755105A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N2203/0003—Steady
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
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- G01N2203/0048—Hydraulic means
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Abstract
The invention discloses an intelligent measurement and control system and method for a hydraulic pressure test of a hydraulic pressure steel pipe, which comprises a hydraulic pressure loading and unloading control device and a measurement and control device; the servo control of the gas-liquid pump provides controllable and stable water pressure for the pressure steel pipe; under the action of different water pressures, the measurement and control device collects and records the stress, deformation, water pressure, water flow, water temperature and the like of the pressure steel pipe and the action time in real time; the invention realizes the pressure servo control of the pressure steel pipe water pressure test, and the real-time collection of collecting a plurality of different types of sensors in 1 collection instrument, realizes the intelligent monitoring of the whole process of the water pressure test through a computer and special software, displays the relation curve between any parameters in real time, has high precision, small fluctuation, accurate and controllable stabilization time and convenient operation, and can be widely applied to the water pressure test of a pressure container.
Description
Technical Field
The invention relates to the technical field of metal pressure vessel test equipment, in particular to an intelligent measurement and control system and method for a hydraulic pressure steel pipe hydrostatic test.
Background
Pressure steel pipes (including branch pipes, connecting pipes, special pipes and the like) are mostly adopted in water transmission and supply of large and medium hydraulic and hydroelectric projects, a hydrostatic test must be carried out on the pressure steel pipes with high water heads and large diameters after manufacturing and installation, and whether the working states of the pressure steel pipes meet the design requirements or not is comprehensively checked through the stress states, deformation characteristics and the like of all parts of the pressure steel pipes under different pressure conditions. Parameters such as deformation, stress, water pressure, flow, temperature and duration of the pressure steel pipe need to be monitored in real time in the hydraulic pressure test process. The existing hydraulic test and monitoring method is a combination of multiple methods and is independent, the stress states of all parts of the steel pipe under different pressure conditions cannot be reflected well and intuitively, and the preliminary judgment is carried out manually according to data collected by all instruments, so that the time and labor are wasted, and the misjudgment is easily caused; the loading and unloading equipment mainly adopts a high-pressure water pump and a mechanical pressure gauge, the loading and unloading speed cannot be accurately controlled, the pressure overall process curve cannot be recorded, and the acquisition time of monitoring parameters cannot be accurately synchronized with the pressure duration.
In summary, the problems of the prior art are as follows: 1. the common high-pressure water pump is adopted for pressurizing and releasing pressure, the working efficiency of manually controlling the pressure and time is low, and the precision is not high; 2. the whole process of pressure cannot be recorded by a computer without an intelligent control and recording device; 3. the strain, deformation, pressure, flow and temperature monitoring devices of the pressure steel pipe are independent, so that the relation curve between each monitoring parameter and time is difficult to form in real time in the same set of equipment, and the change condition of each parameter at each pressure stage is not easy to judge in time.
Disclosure of Invention
The invention aims to solve the problems and provide an intelligent measurement and control system and method for a hydraulic pressure test of a hydraulic pressure steel pipe.
The invention realizes the purpose through the following technical scheme:
an intelligent measurement and control system for a hydraulic pressure test of a hydraulic pressure steel pipe comprises a loading and unloading control device for carrying out hydraulic pressure on the hydraulic pressure steel pipe and a measurement and control device for carrying out stress state detection on the hydraulic pressure steel pipe during loading and unloading; the hydraulic pressure loading and unloading control device comprises a servo controller, wherein an air source filter, an air pressure valve, an air pressure sensor, an air-liquid pump, an air-liquid servo valve and a hydraulic control sensor are connected to the servo controller through data lines, the hydraulic control sensor is connected with the air-liquid servo valve through a pipeline, the input end of the air-liquid servo valve is connected with the air-liquid pump, the input end of the air-liquid pump is connected with a water filter and the air pressure sensor, the water filter is connected with a water valve through a pipeline, the input end of the water valve is connected with a water tank, the input end of the air pressure sensor is connected with the air pressure valve, the input end of the air pressure valve is connected with the air source filter, and the input end of the air source filter is connected with an air pump; the measuring and controlling device comprises a data acquisition instrument, the input end of the data acquisition instrument is connected with a conversion module, the conversion module is respectively connected with a stress sensor group, a deformation sensor group, a temperature sensor group, a pressure sensor and a flowmeter through data lines, and the output end of the servo controller is connected with a computer.
Further setting: the servo controller, the computer and the data acquisition instrument are connected with an uninterruptible power supply through power lines, and an output pipeline of the pneumatic-hydraulic servo valve is connected with the pressure sensor and the flowmeter.
Further setting: the pneumatic-hydraulic pump is connected with the pneumatic-hydraulic servo valve through an air pipe and a water pipe, and the servo controller is connected with the computer through a data line.
Further setting: the air pump is connected with the air source filter through threads, and the air source filter is connected with the air pressure valve through an air pipe.
A use method of an intelligent measurement and control system for a hydraulic pressure steel pipe hydrostatic test comprises the steps of automatically searching whether the states of all electric connection devices are normal or not through special software in a computer after the system is started, exiting a man-machine conversation menu normally, setting a control target value (0-20 MPa), a pressure adding and releasing rate (0.01-50.00L/min), a duration (0.1-50 h), a sampling interval (0.001-20 min), a display mode (full display or single display), a file name, a test point number, a sensor number and the like respectively, clicking to send after setting and confirming correctness is completed, automatically entering a working state by the system, and dynamically displaying a relation curve of each monitoring parameter (temperature, flow, pressure, strain and deformation) and time on a screen;
The temperature sensor group is respectively arranged in the inner wall of the pressure steel pipe, the water tank and the air, the deformation sensor group is arranged on the pressure steel pipe and the outer wall of the choke plug, the stress sensor group is arranged on the inner wall and the outer wall of the pressure steel pipe, and the pressure sensor and the flowmeter are arranged on a high-pressure water pipe of the pressure steel pipe;
in the test process, operation can be carried out from the interface, if the parameters of a certain channel need to be modified, the pressure of the corresponding channel keeps the current state after clicking stop, and the pressure is continuously executed according to the set target after the modification and the click sending are finished;
unloading is needed after the test is finished, stopping is clicked, and pressure relief is clicked after a pressure relief target value and other parameters are set; after the whole test process is finished, the program is automatically saved to the specified document position after clicking stop, then the program is closed after clicking exit, and data is copied through a U disk;
the special software realizes the execution control of the servo controller and the data acquisition instrument, and the instruction execution process is as follows:
the hydraulic control sensor outputs 0-5V direct current voltage (corresponding to 0-20MPa of hydraulic pressure), the proportional relation between the hydraulic pressure and the voltage is obtained through calibration in a program, a computer generates a hydraulic pressure adjusting electric signal (such as +/-delta) and a duration signal at any time to a servo controller according to the set hydraulic pressure and loading and unloading speed of a current system, the servo controller converts the electric signal into an air pressure adjusting signal, the hydraulic pressure of an output end is adjusted according to a certain proportion through an air-liquid servo valve, and the servo control of the hydraulic pressure is realized through the circulation;
The stress sensor group, the pressure sensor, the deformation sensor group, the flowmeter and the temperature sensor group on the pressure steel pipe output 0-5V direct-current voltage, the proportional relation between related parameters and the voltage is obtained through calibration in a program, electric signals are uniformly output to the data acquisition instrument, and the data acquisition instrument stores and displays converted values in real time according to the type and the size of the electric signals; during the loading and unloading process, the relation curve between any parameter and time and the relation curve between any parameters can be displayed in real time according to the requirement.
When the water pressure can not be increased or decreased according to the specified speed or can not reach the target value for a long time, the program gives an alarm in a sound mode to prompt an operator to process in time; when the stress or deformation of any part of the pipe wall of the pressure steel pipe under the action of the water pressure approaches or reaches a limit value, the water pressure cannot be automatically loaded, the current pressure is maintained, and a warning menu is popped up for an operator to handle.
Compared with the prior art, the invention has the following beneficial effects:
1. the air pressure and pneumatic control elements are adopted to realize the servo control of high water pressure, the output water pressure has high precision and small fluctuation, the maximum fluctuation range is less than +/-20 kPa, the flow is adjustable, and the stability is good;
2. the method has the advantages that various sensors of different types are converted into electric signals through the conversion module, and the electric signals are controlled and collected by the same system, so that the problem that the collection of parameters such as water pressure, water flow, water temperature, stress (strain) of the inner wall and the outer wall of the steel pipe, deformation and the like in a hydrostatic test is incompatible and independent in monitoring is solved, the consistency and the coordination of monitoring of the pressure state of the pressure steel pipe are obviously improved, the result quality and the working efficiency are improved, and the labor cost is saved by 3-5 times compared with a conventional test method;
3. The pressure steel pipe wall stress and deformation state automatic retrieval and identification functions are provided, and overpressure is prevented from damaging the pressure steel pipe;
4. simple structure, light weight, convenient operation and good adaptability to the field environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an intelligent measurement and control system for a hydraulic pressure test of a hydraulic pressure steel pipe, according to the invention;
FIG. 2 is a schematic diagram of a connection state structure of sensors of the hydraulic pressure steel pipe hydrostatic test intelligent measurement and control system on a test pressure steel pipe.
The reference numerals are explained below:
1. an air pump; 2. a gas source filter; 3. a pneumatic valve; 4. an air pressure sensor; 5. a water tank; 6. a water valve; 7. a water filter; 8. a gas-liquid pump; 9. a pneumatic-hydraulic servo valve; 10. a hydraulic control sensor; 11. a servo controller; 12. a computer; 13. an uninterruptible power supply; 14. a data acquisition instrument; 15. a conversion module; 16. a stress sensor group; 17. a set of deformation sensors; 18. a group of temperature sensors; 19. a pressure sensor; 20. a flow meter; 21. a pressure steel pipe; 16-1, a first stress sensor; 16-2, a second stress sensor; 18-1, a first temperature sensor; 18-2, a second temperature sensor; 18-3, a third temperature sensor; 22-1, a first bulkhead; 22-2, a second bulkhead; 22-3 and a third choke plug.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or 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 referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-2, an intelligent measurement and control system for a hydraulic pressure test of a hydraulic pressure steel pipe comprises a loading and unloading control device for performing hydraulic pressure on the hydraulic pressure steel pipe, and a measurement and control device for performing stress detection on the hydraulic pressure steel pipe; the hydraulic pressure loading and unloading control device comprises a servo controller 11, wherein the servo controller 11 is connected with an air source filter 2, an air pressure valve 3, an air pressure sensor 4, a gas-liquid pump 8, a gas-liquid servo valve 9 and a hydraulic control sensor 10 through data lines, the hydraulic control sensor 10 is connected with the gas-liquid servo valve 9 through pipelines, the gas-liquid servo valve 9 regulates water pressure through air pressure according to the size and direction of an electric signal and keeps the water pressure within a certain range, the hydraulic control sensor 10 transmits pressure fluctuation to the servo controller 11 in real time to realize closed-loop control of the water pressure, the input end of the gas-liquid servo valve 9 is connected with the gas-liquid pump 8, the input end of the gas-liquid pump 8 is connected with a water filter 7 and the air pressure sensor 4, the water filter 7 is connected with a water valve 6 through a pipeline, the input end of the water valve 6 is connected with a water tank 5, the input end of the air pressure sensor 4 is connected with the air pressure valve 3, the input end of the air pressure valve 3 is connected with the air source filter 2, the input end of the air source filter 2 is connected with an air pump 1, the air source filter 2 and the air pressure sensor 4 provide constant air pressure for testing, the water tank 5, the water filter 7, the air-liquid pump 8, the air-liquid servo valve 9 and the hydraulic control sensor 10 provide constant water pressure for testing, and the high-pressure water pipe injects water pressure into the pressure steel pipe 21 through a choke plug 22-1; the measurement and control device comprises a data acquisition instrument 14, the input end of the data acquisition instrument 14 is connected with a conversion module 15, the conversion module 15 is connected with a stress sensor group 16, a deformation sensor group 17, a temperature sensor group 18, a pressure sensor 19 and a flowmeter 20 through data lines respectively, the conversion module 15 carries out automatic cycle acquisition on sensor information of each channel of the terminal, data are automatically stored, numerical values and curves are displayed on a screen, and the output end of a servo controller 11 and the output end of the data acquisition instrument 14 are connected with a computer 12.
Preferably, the following components: the servo controller 11, the computer 12 and the data acquisition instrument 14 are connected with an uninterruptible power supply 13 through power lines, the uninterruptible power supply 13 is used for guaranteeing the continuity of a system power supply, and an output pipeline of the pneumatic-hydraulic servo valve 9 is connected with the pressure sensor 19 and the flowmeter 20; the pneumatic-hydraulic pump 8 is connected with the pneumatic-hydraulic servo valve 9 through an air pipe and a water pipe, and the servo controller 11 is connected with the computer 12 through a data line; the air pump 1 is connected with the air source filter 2 through threads, and the air source filter 2 is connected with the air pressure valve 3 through an air pipe.
A use method of an intelligent measurement and control system for a hydraulic pressure steel pipe hydrostatic test comprises the steps of automatically searching whether the states of all electric connection devices are normal or not through special software in a computer 12 after the system is started, exiting a man-machine conversation menu normally, setting a control target value (0-20 MPa), a pressure adding and releasing rate (0.01-50.00L/min), a duration (0.1-50 h), a sampling interval (0.001-20 min), a display mode (full display or single display), a file name, a test point number, a sensor number and the like respectively, clicking to send after setting and confirming correctness is completed, automatically entering a working state by the system, and dynamically displaying a relation curve of each monitoring parameter (temperature, flow, pressure, strain and deformation) and time on a screen;
Placing a first temperature sensor 18-1 in the water tank 5, placing a second temperature sensor 18-2 in the air outside the pressure steel pipe 21, and placing a third temperature sensor 18-3 inside the pressure steel pipe 21; the first stress sensor 16-1 is arranged on the inner wall of the pressure steel pipe 21, the second stress sensor 16-2 is arranged on the outer wall of the pressure steel pipe 21, and the positions of the inner wall and the outer wall of the first stress sensor 16-1 and the position of the inner wall and the outer wall of the second stress sensor 16-2 are correspondingly arranged; the first stress sensor 16-1 and the second stress sensor 16-2 are one-way, two-way or three-way strain gauges, are selected according to the wall thickness of the pressure steel pipe 21, important welding seams and the stress state of a reinforcing rib plate, and are provided with a plurality of measuring points according to the requirement of the resistance limit value of the pressure steel pipe 21; the deformation sensors in the deformation sensor group 17 adopt grating displacement sensors, are arranged on the outer side of the pressure steel pipe 21, and can also be arranged on the outer sides of the first bulkhead 22-1, the second bulkhead 22-2 and the third bulkhead 22-3 according to requirements, the positions and the quantity of measuring points are also reasonably arranged according to the deformation characteristics of the pressure steel pipe and the bulkheads, and the reference point and the reference beam of the deformation sensor group 17 have enough rigidity to reduce the influence of temperature as much as possible;
in the test process, operation can be carried out from the interface, if the parameters of a certain channel need to be modified, the pressure of the corresponding channel keeps the current state after clicking stop, and the click sending is carried out continuously according to the set target after the modification is finished;
Unloading is needed after the test is finished, stopping is clicked, and pressure relief is clicked after a pressure relief target value and other parameters are set; after the whole test process is finished, the program is automatically saved to the specified document position after clicking stop, then the program is closed after clicking exit, and data is copied through a U disk;
the special software realizes the execution control of the servo controller 11 and the data acquisition instrument 14, and the instruction execution process is as follows:
the hydraulic control sensor 10 outputs 0-5V direct current voltage (corresponding to 0-20MPa of hydraulic pressure), the proportional relation between the hydraulic pressure and the voltage is obtained through calibration in a program, the computer 12 generates a hydraulic pressure adjusting electric signal (such as +/-delta) and a duration signal to the servo controller 11 at any time according to the set hydraulic pressure and the loading and unloading rate of the current system, the servo controller 11 converts the electric signal into an air pressure adjusting signal, the hydraulic pressure of an output end is adjusted according to a certain proportion through the air-hydraulic servo valve 9, and the water pressure is cyclically controlled;
the stress sensor group 16, the pressure sensor 19, the deformation sensor group 17, the flowmeter 20 and the temperature sensor group 18 on the pressure steel pipe output 0-5V direct current voltage, the proportional relation between related parameters and the voltage is obtained through calibration in a program, electric signals are uniformly output to the data acquisition instrument 14, and the data acquisition instrument 14 stores and displays converted values in real time according to the type and the size of the electric signals; and in the loading and unloading process, the relation curve between any parameter and time and the relation curve between any parameter can be displayed in real time according to the requirement.
When the water pressure can not be increased or decreased according to the specified speed or can not reach the target value for a long time, the program gives an alarm in a sound mode to prompt an operator to process in time; when the stress or deformation of any part of the pipe wall of the pressure steel pipe under the action of the water pressure approaches or reaches a limit value, the water pressure cannot be automatically loaded, the current pressure is maintained, and a warning menu is popped up for an operator to handle.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (5)
1. The utility model provides a hydraulic pressure steel pipe hydrostatic test intelligence system of observing and controling which characterized in that: the hydraulic pressure steel pipe stress detection device comprises a loading and unloading control device for carrying out hydraulic pressure on a hydraulic pressure steel pipe and a measurement and control device for carrying out stress detection on the hydraulic pressure steel pipe; the hydraulic pressure loading and unloading control device comprises a servo controller (11), wherein the servo controller (11) is connected with an air source filter (2), an air pressure valve (3), an air pressure sensor (4), an air-liquid pump (8), an air-liquid servo valve (9) and a hydraulic control sensor (10) through data lines, the hydraulic control sensor (10) is connected with the air-liquid servo valve (9) through a pipeline, the input end of the air-liquid servo valve (9) is connected with the air-liquid pump (8), the input end of the air-liquid pump (8) is connected with a water filter (7) and the air pressure sensor (4), the water filter (7) is connected with a water valve (6) through a pipeline, the input end of the water valve (6) is connected with a water tank (5), the input end of the air pressure sensor (4) is connected with the air pressure valve (3), the input end of the air pressure valve (3) is connected with the air source filter (2), the input end of the air source filter (2) is connected with an air pump (1); the measurement and control device comprises a data acquisition instrument (14), wherein the input end of the data acquisition instrument (14) is connected with a conversion module (15), the conversion module (15) is connected with a stress sensor group (16), a deformation sensor group (17), a temperature sensor group (18), a pressure sensor (19) and a flowmeter (20) through data lines, and the output end of the servo controller (11) is connected with a computer (12) while the output end of the data acquisition instrument (14) is connected with a computer.
2. The intelligent measurement and control system for the hydraulic pressure test of the hydraulic pressure steel pipe according to claim 1, is characterized in that: the servo control instrument (11), the computer (12) and the data acquisition instrument (14) are connected with an uninterruptible power supply (13) through power lines, and an output pipeline of the pneumatic-hydraulic servo valve (9) is connected with the pressure sensor (19) and the flowmeter (20).
3. The intelligent measurement and control system for the hydraulic pressure test of the hydraulic pressure steel pipe according to claim 2 is characterized in that: the gas-liquid pump (8) is connected with the gas-liquid servo valve (9) through a gas pipe and a water pipe, and the servo control instrument (11) is connected with the computer (12) through a data line.
4. The intelligent measurement and control system for the hydraulic pressure test of the hydraulic pressure steel pipe according to claim 3, characterized in that: the air pump (1) is connected with the air source filter (2) through threads, and the air source filter (2) is connected with the air pressure valve (3) through an air pipe.
5. The use method of the intelligent measurement and control system for the hydraulic pressure test of the hydraulic pressure steel pipe according to claim 4 is characterized in that:
starting an uninterruptible power supply (13) and a computer (12) and opening special software, firstly, automatically detecting the current state of the system by the software, then popping up a man-machine conversation interface, setting corresponding control parameters and then sending an instruction to a servo controller (11) and a data acquisition instrument (14), and enabling the system to enter a working state;
The method comprises the following steps of placing a temperature sensor group (18) on the inner wall of a pressure steel pipe (21), placing a deformation sensor group (17) on the outer wall of the pressure steel pipe (21), placing a stress sensor group (16) on the inner wall and the outer wall of the pressure steel pipe (21), and placing a pressure sensor (19) and a flowmeter (20) on a water pipe of the pressure steel pipe (21);
when the air pressure and the water pressure reach rated values, the air-hydraulic servo valve (9) provides the water pressure to the output end at a set speed, meanwhile, the hydraulic control sensor (10) feeds back the water pressure of the output end, controls the output water pressure within a specified error range in real time, displays the output water pressure in a real-time image forming manner, and automatically stabilizes the output pressure when the output water pressure reaches a target value;
after the loading and pressure stabilizing process is finished, an unloading instruction is sent out through software, and the hydraulic pressure of an output end is unloaded to zero by the pneumatic-hydraulic servo valve (9) according to a set speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281643.2A CN114755105A (en) | 2022-03-22 | 2022-03-22 | Hydraulic pressure steel pipe hydrostatic test intelligent measurement and control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210281643.2A CN114755105A (en) | 2022-03-22 | 2022-03-22 | Hydraulic pressure steel pipe hydrostatic test intelligent measurement and control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148033A (en) * | 2022-11-10 | 2023-05-23 | 中国原子能科学研究院 | Test device and test method |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148033A (en) * | 2022-11-10 | 2023-05-23 | 中国原子能科学研究院 | Test device and test method |
| CN116148033B (en) * | 2022-11-10 | 2024-05-14 | 中国原子能科学研究院 | Test device and test method |
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