CN218630598U - Hypergravity high-pressure high-temperature control system - Google Patents
Hypergravity high-pressure high-temperature control system Download PDFInfo
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- CN218630598U CN218630598U CN202223174993.3U CN202223174993U CN218630598U CN 218630598 U CN218630598 U CN 218630598U CN 202223174993 U CN202223174993 U CN 202223174993U CN 218630598 U CN218630598 U CN 218630598U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model provides a supergravity high-pressure high-temperature control system, which comprises an upper computer, an electric cabinet and a direct-current power supply, wherein the upper computer and the direct-current power supply are both arranged outside the electric cabinet; the electric cabinet comprises an electric control box body and a controller, a temperature controller, a touch screen, a signal conditioning isolation module and a hydraulic control module which are arranged in the electric control box body, wherein the controller is in communication connection with the upper computer, the hydraulic control module, the temperature controller and the touch screen respectively, and the temperature controller is in communication connection with the signal conditioning isolation module and the direct-current power supply respectively. The utility model discloses beneficial effect: the system pressurization/pressure relief speed is controllable, and the precision is high; in the process of the supergravity test, pressure compensation is automatically carried out; under the hypergravity environment, can carry out accurate temperature control according to the temperature planning curve is automatic.
Description
Technical Field
The utility model belongs to intelligence is equipped the field, especially relates to a hypergravity high pressure high temperature control system.
Background
The movement and evolution law of the substances in the earth are a scientific problem. Geological evolution has two characteristics: long time spans (tens of millions of years or even hundreds of millions of years) and wide spatial ranges (thousands of kilometers) represent a significant challenge to relevant scientific research. The hypergravity centrifugal machine has the functions of reducing the size and the time, and can simulate the process of geological evolution in a laboratory. Therefore, high-pressure and high-temperature earth science experiments can be developed under the high-gravity environment by virtue of a high-gravity field created by the high-gravity centrifugal machine, and the migration evolution law of substances in the deep part of the earth is revealed. At present, the research in the field of the earth science of the hypergravity high-pressure high-temperature experiment in China is blank.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a high-gravity high-pressure high-temperature control system to solve the deficiencies of the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a supergravity high-voltage high-temperature control system comprises an upper computer, an electric cabinet and a direct-current power supply, wherein the upper computer and the direct-current power supply are both arranged outside the electric cabinet;
the electric cabinet comprises an electric cabinet body and a controller, a temperature controller, a touch screen, a signal conditioning isolation module and a hydraulic control module which are arranged in the electric cabinet body, wherein the controller is in communication connection with an upper computer, the hydraulic control module, the temperature controller and the touch screen respectively, and the temperature controller is in communication connection with the signal conditioning isolation module and a direct-current power supply respectively.
Further, serial port communication is realized between the controller and the temperature controller, between the controller and the touch screen and between the controller and the direct current power supply through RS485 interfaces.
Further, the controller and the upper computer realize industrial Ethernet communication through an RJ45 interface.
Further, the hydraulic control module includes valves, press test device, first pressure sensor and hydraulic pressure station, the pressure control module is constituteed to host computer, controller, valves, press test device, first pressure sensor and test piece, host computer, controller full duplex communication connection, the controller output is connected to press test device through the valves, press test device output is connected to test piece and first pressure sensor respectively, first pressure sensor output is connected to the controller, closed-loop control is constituteed to controller, valves, press test device, first pressure sensor.
Further, the valves include an electromagnetic directional valve, a proportional overflow valve, a safety valve and a second pressure sensor, the hydraulic station includes a valve block, a filter, an oil pipe, a motor pump set, an oil tank and a hydraulic pressure booster, the valve block is installed at one end of the motor pump set, the hydraulic pressure booster is installed on one side of the valve block, the electromagnetic directional valve is installed on the hydraulic pressure booster, the second pressure sensor is installed at the other end of the motor pump set, one end of the motor pump set is connected to the filter through the oil pipe, and the proportional overflow valve and the safety valve are installed on the rear side of the motor pump set.
Furthermore, the upper computer, the controller, the signal conditioning isolation module, the temperature controller, the direct current power supply, the thermocouple of the press testing device and the test piece form a temperature control module, the controller is in full-duplex communication connection with the upper computer and the temperature controller, and the output end of the temperature controller is connected to the input end of the temperature controller after sequentially passing through the direct current power supply, the test piece, the thermocouple of the press testing device and the signal conditioning isolation module.
Compared with the prior art, a hypergravity high pressure high temperature control system have following advantage:
the supergravity high-pressure high-temperature control system has the advantages that the pressurization/pressure relief speed of the system is controllable, and the precision is high; in the process of the supergravity test, pressure compensation is automatically carried out; under the hypergravity environment, can carry out accurate temperature control according to the temperature planning curve is automatic.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic diagram of an overall system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a pressure control module according to an embodiment of the present invention;
fig. 3 is a schematic view of a hydraulic station according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a temperature control module according to an embodiment of the present invention.
Description of the reference numerals:
1. an upper computer; 2. a controller; 3. a hydraulic control module; 4. a signal conditioning isolation module; 5. a temperature controller; 6. a direct current power supply; 7. a valve block; 701. an electromagnetic directional valve; 702. a proportional relief valve; 703. a safety valve; 704. a second pressure sensor; 8. a press testing device; 9. a test piece; 10. a first pressure sensor; 11. a hydraulic station; 1101. a valve block; 1102. a filter; 1103. an oil pipe; 1104. a motor-pump unit; 1105. an oil tank; 1106. a hydraulic pressure booster; 12. a touch screen.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, a supergravity high-pressure high-temperature control system comprises an upper computer 1, an electric cabinet and a dc power supply 6.
The upper computer 1 has the functions of parameter setting, remote control, data display, processing, storage and the like.
The electric cabinet mainly comprises a controller 2, a temperature controller 5, a touch screen 12, a signal conditioning isolation module 4 and a hydraulic control module 3. The controller 2 needs to communicate with the temperature controller 5, the touch screen 12 and the direct-current power supply through an RS485 interface, and communicates with the upper computer 1 through an RJ45 interface to realize industrial Ethernet.
The dc power supply 6 is a power supply that can be used on the centrifuge, and can monitor the voltage, current, and internal temperature in real time.
The above is the hardware of the control system, and the hardware of the system comprises a pressure control module and a temperature control module.
Fig. 2 is a block diagram of a pressure control module in the hydraulic control module 3, where the upper computer 1 sets parameters such as target pressure, pressurization rate/pressurization time, and the controller 2 plans a virtual target curve according to the parameters. The upper computer 1 starts a hydraulic station 11 of the hydraulic control module 3 (the hydraulic station 11 is the prior art), sends a start command, and the controller 2 completes pressurization control on the test piece 9 by controlling a valve bank 7 of the hydraulic control module 3 and the press testing device 8 according to the command. Meanwhile, the first pressure sensor 10 feeds back a real-time pressure value to the controller 2, thereby completing closed-loop control. Finally, the controller 2 feeds the pressure value back to the upper computer 1, and data and curves are displayed on the upper computer 1.
When the pressure is slowly reduced, the controlled object is switched to the needle valve in the press testing device 4, and meanwhile, the hydraulic station 11 in fig. 2 controls oil return of an oil path where the needle valve is located.
Fig. 3 shows the valve block 7 of fig. 2 installed with the hydraulic station 11, said valve block 7 comprising a solenoid directional valve 701, a proportional relief valve 702, a safety valve 703 and a second pressure sensor 704.
The hydraulic station 11 of fig. 3 works as follows:
and starting a motor-pump set 1104 on the hydraulic station 11, controlling the proportional overflow valve 702 to build pressure for the whole system, and controlling the power on and power off of the electromagnetic directional valve 701 according to instructions, thereby controlling the hydraulic pressure booster 1106 to realize system pressurization, and realizing closed-loop accurate oil pressure output according to the second pressure sensor 704. The safety valve 703 is used for releasing pressure when the oil pressure of the system is too high, and plays a role in protecting the system; the filter 1102 may filter out impurities in the hydraulic oil.
The mounting of the valve group 7 to the hydraulic station 11 is structured as follows:
the electromagnetic directional valve 701 is fixed on a hydraulic pressure booster 1106 through a long screw and a sealing ring, the hydraulic pressure booster 1106, a proportional overflow valve 702, a safety valve 703, a second pressure sensor 704 and a motor-pump set 1104 are fixed on a valve block 1101, the above elements are fixed on an oil tank 1105 through the valve block 1101, and a filter 1102 on the oil tank 1105 is connected with an oil return port of the valve block 1101 through an oil pipe 1103.
The valve group 7 and the hydraulic station 11 are described by the following components:
electromagnetic directional valve 701: controlling the switching of the oil way through a direct current switching value signal;
valve block 1101: the metal block is used for controlling the flow of hydraulic oil in cooperation with a hydraulic element.
Proportional relief valve 702: the pressure of the oil outlet of the overflow valve is adjusted through an analog quantity signal;
safety valve 703: when the pressure of the oil inlet reaches a set value, the oil inlet and outlet circuit is communicated, and the pressure is relieved;
the filter 1102: impurities in the hydraulic oil are filtered out, and the requirement of elements on the hydraulic oil is met;
an oil pipe 1103: through which hydraulic oil flows for connection between the valve block 1101, the element and the reservoir 1105;
second pressure sensor 704: converting the oil pressure signal in the oil way into an electric signal for signal acquisition;
the motor-pump set 1104: the power source of the hydraulic station 11 consists of a motor and a hydraulic pump which are connected through a key. Starting an alternating current asynchronous motor to drive a hydraulic pump to work and control hydraulic oil to flow into a system;
oil tank 1105: storing hydraulic oil;
the hydraulic pressure booster 1106: through the hydraulic control reversing valve, the internal pressurizing cylinders can be automatically switched after respectively reaching dead points at two end parts, so that the low-pressure hydraulic oil is continuously converted into high-pressure hydraulic oil to be output.
The difficulty of the pressure control module is how to realize high-precision slow rising and slow falling of the pressure. The application relates to a pressure control module: the pressurization rate and the pressurization time are calculated in the upper computer 1 and the controller 2 according to set parameters, the pressurization rate is divided into high-speed pressurization and low-speed pressurization, and the pressurization time is divided into a10 ms timing time base and a 100ms timing time base, so that a target curve conforming to the set parameters is obtained. And triggering a pressurization action according to the difference value of the target pressure and the actual pressure (the feedback value of the pressure sensor) to complete the following function, thereby realizing the process of slow pressurization. After the pressure is increased to the target pressure, the system has an automatic pressure compensation function. The difference between slow descending and slow ascending is that the controlled objects are different, and the electromagnetic valve is switched to a needle valve.
The pressure control precision of the system is +/-0.5 bar, and the follow-up pressure needs to be adjusted in advance when the difference value between the target pressure and the actual pressure is larger than 0.4 bar. In addition, the signal transmission and the system response have time delay characteristics, so that each pressure adjustment value is slightly higher than the target pressure value.
Fig. 4 shows a temperature control module process, in which the upper computer 1 completes the planning of a temperature control curve, and sends data to the temperature controller 3 through the controller 2, and the temperature controller 3 controls the dc power supply 4 to heat the test piece 9 according to PID control. Meanwhile, a thermocouple in the press testing device 8 feeds a real-time temperature value back to the temperature controller 3 through the signal conditioning isolation module 4, so that temperature closed-loop control is completed. Finally, the controller 2 feeds back the output voltage, the output current, the internal temperature of the direct current power supply 4 and the temperature value of the test piece 9 to the upper computer 1, and data and curves are displayed on the upper computer 1.
The temperature control test is completed in a supergravity environment, and it is necessary to overcome the interference of the environment on the temperature control precision. The signal cable must possess two twisted pair shielding and tensile characteristics, and the thermocouple signal passes through signal conditioning isolation module and gets into the temperature controller to guaranteed that the signal is accurate and circuit safety. In software, the PID parameters of the system are determined through a large number of experiments, so that the temperature control precision is improved to +/-0.1 percent fs.
The present application does not relate to the improvement of the program, and the control program and the control device used are the prior art. Wherein, the model of the upper computer 1 can be an associative industrial notebook computer; the model of the controller 2 can be S7-200Smart series; the hydraulic control module 3 can be composed of a PLC expansion module, an electromagnetic valve, a sensor and the like. The model of the signal conditioning isolation module is TXDIN101C; the model of the temperature controller 5 is 3504 series; the model of the direct current power supply is PA10600D; the model of the touch screen 12 is SMART700IE.
The advantages of the system are as follows:
1. the system pressurization/pressure relief speed is controllable, and the precision is high;
2. in the process of the supergravity test, pressure compensation is automatically carried out;
3. under the hypergravity environment, can carry out accurate temperature control according to the temperature planning curve is automatic.
The core technology of this patent is: the high-precision control of the high-gravity high-pressure high-temperature experimental device is realized, and the device can stably work for a long time in a high-gravity field. The system can apply the confining pressure of 3GPa at most and the temperature of 1500 ℃ at most to an experimental sample, and can perform experiments in the hypergravity field of 150G at most. The pressure control rate of applying pressure to the test piece is required to be 0.05MPa/min in the test process, and the high-precision slow-speed pressure control under the special working condition environment is extremely difficult to realize. Therefore, a pressure control module (see fig. 2) is developed, and through a plurality of tests, a hydraulic element and an electrical element with high control precision and high response speed are preferably selected, so that a special high-precision pressure control system is successfully developed, the interference of large-amplitude changes of centrifugal force and temperature can be eliminated, and the technical requirement of precise pressure control is met.
In addition, because of the small size and high temperature sensitivity of the test piece, the temperature is required to be changed according to a specific curve (the temperature can be as high as 1500 ℃). Therefore, a temperature control module (shown in figure 4) is developed, temperature control components are preferably selected, a set of accurate temperature control system is successfully developed, and the technical requirement that the test piece carries out accurate temperature control according to a planning curve is met.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a hypergravity high pressure high temperature control system which characterized in that: the device comprises an upper computer (1), an electric cabinet and a direct-current power supply (6), wherein the upper computer (1) and the direct-current power supply (6) are arranged outside the electric cabinet;
the electric cabinet comprises an electric cabinet body and a controller (2), a temperature controller (5), a touch screen (12), a signal conditioning isolation module (4) and a hydraulic control module (3) which are arranged in the electric cabinet body, wherein the controller (2) is in communication connection with an upper computer (1), the hydraulic control module (3), the temperature controller (5) and the touch screen (12) respectively, and the temperature controller (5) is in communication connection with the signal conditioning isolation module (4) and a direct-current power supply (6) respectively.
2. The supergravity high-pressure high-temperature control system according to claim 1, wherein: the controller (2), the temperature controller (5), the touch screen (12) and the direct current power supply (6) realize serial port communication through RS485 interfaces.
3. The supergravity high-pressure high-temperature control system according to claim 1, wherein: and the controller (2) and the upper computer (1) realize industrial Ethernet communication through an RJ45 interface.
4. The supergravity high-pressure high-temperature control system according to claim 1, wherein: hydraulic control module (3) include valves (7), press test device (8), first pressure sensor (10) and hydraulic pressure station (11), the pressure control module is constituteed to host computer (1), controller (2), valves (7), press test device (8), first pressure sensor (10) and test piece (9), host computer (1), controller (2) full duplex communication connection, controller (2) output is connected to press test device (8) through valves (7), press test device (8) output is connected to test piece (9) and first pressure sensor (10) respectively, first pressure sensor (10) output is connected to controller (2), closed-loop control is constituteed to controller (2), valves (7), press test device (8), first pressure sensor (10).
5. The supergravity high-pressure high-temperature control system according to claim 4, wherein: the valve group (7) comprises an electromagnetic directional valve (701), a proportional overflow valve (702), a safety valve (703) and a second pressure sensor (704), the hydraulic station (11) comprises a valve block (1101), a filter (1102), an oil pipe (1103), a motor pump set (1104), an oil tank (1105) and a hydraulic booster (1106), the valve block (1101) is installed at one end of the motor pump set (1104), the hydraulic booster (1106) is installed at one side of the valve block (1101), the electromagnetic directional valve (701) is installed on the hydraulic booster (1106), the second pressure sensor (704) is installed at the other end of the motor pump set (1104), one end of the motor pump set (1104) is further connected to the filter (1102) through the oil pipe (1103), and the proportional overflow valve (702) and the safety valve (703) are further installed at the rear side of the motor pump set (1104).
6. The supergravity high-pressure high-temperature control system according to claim 4, wherein: the temperature control module is formed by thermocouples of the upper computer (1), the controller (2), the signal conditioning isolation module (4), the temperature controller (5), the direct-current power supply (6) and the press testing device (8) and the test piece (9), the controller (2) is in full-duplex communication connection with the upper computer (1) and the temperature controller (5), and the output end of the temperature controller (5) is connected to the input end of the temperature controller (5) after sequentially passing through the thermocouples of the direct-current power supply (6), the test piece (9) and the press testing device (8) and the signal conditioning isolation module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223174993.3U CN218630598U (en) | 2022-11-29 | 2022-11-29 | Hypergravity high-pressure high-temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223174993.3U CN218630598U (en) | 2022-11-29 | 2022-11-29 | Hypergravity high-pressure high-temperature control system |
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| CN218630598U true CN218630598U (en) | 2023-03-14 |
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| CN202223174993.3U Active CN218630598U (en) | 2022-11-29 | 2022-11-29 | Hypergravity high-pressure high-temperature control system |
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