CN110751887A - Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof - Google Patents
Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof Download PDFInfo
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- CN110751887A CN110751887A CN201911039473.1A CN201911039473A CN110751887A CN 110751887 A CN110751887 A CN 110751887A CN 201911039473 A CN201911039473 A CN 201911039473A CN 110751887 A CN110751887 A CN 110751887A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/12—Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
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Abstract
The invention provides a quantitative pouring system for a centrifugal casting physical simulation experiment, wherein a storage box is positioned on a first support frame at the top of a base frame on a rack and is connected with storage conveying through a pressure pump; the bottom of the storage box is connected with a pouring gate through a pouring pipeline, and the pouring gate is opposite to the mold and the platform thereof; a throttle valve, a flowmeter, an electromagnetic valve and a control cabinet are arranged on the pouring pipeline; the electromagnetic valve and the flowmeter are respectively connected with the control cabinet; the pressure sensor is packaged on the inner wall of the pouring gate and is connected with the signal acquisition and emission system, and the signal acquisition and emission system is in communication connection with the upper computer. The quantitative pouring system for the centrifugal casting physical simulation experiment and the control method thereof provided by the invention are designed aiming at repeated pouring simulation experiments and researching the influence of the mold filling speed and pressure on the mold filling flow field, and have the advantages of simple operation and remote control.
Description
Technical Field
The invention belongs to the field of flow and pressure monitoring and control, and particularly relates to a quantitative pouring system for a centrifugal casting physical simulation experiment and a control method thereof.
Background
Casting is an important method for producing various metal products, the actual casting process is usually carried out in a vacuum-sealed opaque environment, the temperature of fluid reaches more than one thousand ℃ in the mold filling process, and the current equipment cannot directly observe the motion process of the mold filling fluid. In order to deeply research the motion law of the mold filling fluid in the casting process, such as the distribution of pressure of the fluid on a mold wall, a fluid mold filling speed field, a shape law during fluid mold filling, and the like, a physical simulation experiment method is often adopted.
In the casting physical simulation experiment, the initial filling speed and pressure are two basic and critical data. In order to ensure the repeatability of the experiment and comprehensively collect the experiment parameters, it is important to accurately monitor and control the initial speed and pressure parameters of the mold filling fluid.
In the prior casting physical simulation experiment, the initial speed control and the pressure acquisition of the fluid are controlled by an independent operating system, and the process is complex and the steps are complex in the experimental operation, so that the high-precision repeatable casting physical simulation experiment is not easy to realize.
Disclosure of Invention
Therefore, the invention provides a quantitative pouring system for a centrifugal casting physical simulation experiment and a control method thereof, which overcome inevitable accidental adverse factors during manual operation and enable the vertical centrifugal casting physical simulation experiment to be repeatable and simple to operate. The system can also realize the remote control of pouring flow, initial mold filling speed and pressure in the pouring system of the casting physical simulation experiment; the method has the advantages of simple operation, remote control and system integration, and has important significance for repeating and researching casting physical simulation experiments.
In order to achieve the aim, the invention provides a quantitative pouring system for a centrifugal casting physical simulation experiment, which comprises a base frame, a pressure pump, a storage box, a flow control system, a pressure detection system and an upper computer, wherein the base frame is provided with a plurality of grooves;
the material storage box is positioned on a first support frame at the top of a base frame on the rack and is connected with material storage conveying through a pressure pump;
the bottom of the storage box is connected with a pouring gate through a pouring pipeline, and the pouring gate is opposite to the mold and the platform thereof; a flow control system is arranged on the pouring pipeline, and comprises a throttle valve, a flowmeter, an electromagnetic valve and a control cabinet; the electromagnetic valve and the flowmeter are respectively connected with the control cabinet;
the pressure detection system comprises a pressure sensor and a signal acquisition and emission system; the pressure sensor is packaged on the inner wall of the pouring gate and is connected with the signal acquisition and emission system, and the signal acquisition and emission system is in communication connection with the upper computer.
The base frame is composed of a bottom guide rail and an upper iron frame, wherein the bottom of the iron frame is provided with a roller which can move transversely on the guide rail.
The pressure pump is used for pumping the experimental fluid into the storage box and storing the experimental fluid in advance. The storage box is arranged on the support frame on the base frame and provides the initial speed required by the filling fluid through gravitational potential energy. The support frame is fixed on the base frame through threaded connection. The different height of bed frame in proper order the equidistance be equipped with a plurality of screw holes, first support frame passes through the bolt installation through the screw hole of selecting the co-altitude not, still includes the second support frame, fixes on the bed frame with the bolt equally for fixed and support the pouring pipeline.
The throttle valve is positioned in front of the flowmeter and is used for assisting in regulating the fluid speed by controlling the size of the throttle section of the throttle valve.
The caliber of the pulse flowmeter is matched with the filling type pipeline, and the range of nominal pressure and flow is required to be larger than the maximum pressure and flow in the experiment.
Considering that the experimental fluid may have a certain pH value, 316 stainless steel is adopted for both the flow meter and the solenoid valve.
The control cabinet, the flowmeter and the electromagnetic valve are sequentially connected, and the flowmeter is a pulse flowmeter. The flow passing through the electromagnetic valve is transmitted to the control cabinet through an electric signal, and the control cabinet reads the data of the flowmeter and controls the electromagnetic valve to be switched on or off through power supply.
The control cabinet is connected with the upper computer, can output flow data in real time, and is convenient for remote observation and control during experiments.
The wireless pressure sensor is a multipoint thin film type pressure sensor and is arranged on the inner wall of the sprue gate pipeline. And transmits the pressure data to an upper computer through a signal transmitter. The film pressure sensor adopts a plastic film for waterproof treatment.
Considering that the experimental fluid has certain pollution, the front pipeline and the rear pipeline of the pulse flowmeter, the electromagnetic valve and the wireless pressure sensor are connected by pipe joints, so that the pulse flowmeter, the electromagnetic valve and the wireless pressure sensor are convenient to disassemble, clean and check regularly.
The control method of the quantitative pouring system for the centrifugal casting physical simulation experiment comprises the following steps:
the upper computer sends a starting signal to the flow control system and the pressure pump in an I/O communication mode;
the pressure pump pumps the experimental fluid into the storage box, the experimental fluid is stored in advance, the storage box is arranged at a high position, and the initial speed required by the filling fluid is provided through gravitational potential energy;
the flow meter feeds the flow in the pouring pipeline back to the control cabinet through an electric signal, and when the flow reaches a set value, the control cabinet cuts off the power supply of the electromagnetic valve, so that the mold filling flow is quantitatively controlled;
the pressure of the filling fluid is monitored in real time through the pressure sensor, and the pressure sensor wirelessly transmits a pressure signal to the upper computer through the signal acquisition and transmission system.
The quantitative pouring system for the centrifugal casting physical simulation experiment and the control method thereof provided by the invention are designed aiming at repeated pouring simulation experiments and researching the influence of the mold filling speed and pressure on the mold filling flow field, and have the advantages of simple operation and remote control.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the quantitative pouring system for the centrifugal casting physical simulation experiment comprises a base frame 1, a pressure pump 2, a storage tank 3, a flow control system, a pressure detection system and an upper computer 4;
the material storage box 3 is positioned on a first support frame 12 at the top of a base frame 1 on the rack, and the material storage box 3 is connected with material storage and conveying through a pressure pump 2;
the bottom of the material storage box 3 is connected with a pouring gate through a pouring pipeline, and the pouring gate is opposite to the mold and the platform 14 thereof; a flow control system is arranged on the pouring pipeline and comprises a throttle valve 5, a flowmeter 6, an electromagnetic valve 7 and a control cabinet 8; the electromagnetic valve 7 and the flowmeter 6 are respectively connected with a control cabinet 8;
the pressure detection system comprises a pressure sensor 9 and a signal acquisition and emission system 10; the pressure sensor 9 is packaged on the inner wall of the pouring gate and is connected with the signal acquisition and emission system 10, and the signal acquisition and emission system 10 is in communication connection with the upper computer 4.
A plurality of equidistant threaded holes 11 are drilled in the base frame 1, so that the heights of the first support frame 12 and the storage box 3 are changed, the initial speed required by filling type fluid is provided, the height change range is 1-3.5 meters, and the base frame further comprises a second support frame 13 which is also fixed on the base frame 1 through bolts and used for fixing and supporting a pouring pipeline.
The throttle valve 5 is a ball valve, and the speed of the mold filling fluid is controlled in an auxiliary manner by controlling the angle of the throttle valve, namely the throttle section.
2m flow of the pressure pump3H, the head is 20 m. The pressure pump 2 pumps the test fluid to the high storage tank 3 in advance.
The diameter of the fluid pouring pipeline in the pouring system is 15mm smaller, so that the pipeline is filled with the mold filling fluid when the mold filling fluid flows in the pouring pipeline.
The flowmeter adopts a turbine flowmeter, and the turbine flowmeter and the pouring pipeline are connected in a horizontal clamp manner. Turbine flowThe caliber is 20mm, the nominal pressure is 10-16MPa, and the flow range is 0.4-8 m3H is used as the reference value. And the data of the flowmeter is output to the central control cabinet in a current output mode.
The control cabinet 8, the electromagnetic valve 7 and the flowmeter 6 are respectively connected, the control cabinet 8 reads data of the flowmeter 6 and supplies power to the electromagnetic valve 7, and the electromagnetic valve 7 is controlled to be switched on and off through power supply.
The electromagnetic valve 7 is in a fully-closed type, and when the control cabinet 8 supplies power, the electromagnetic valve 7 is fully opened; the control cabinet 8 stops supplying power, and the electromagnetic valve 7 is fully closed.
The control cabinet 8 integrates the flow integrating instrument and the wireless data receiver, and simultaneously collects flow and pressure data to correspond to the flow and pressure data. The flow integrating instrument is a flow digital integrating instrument and can be directly matched with a turbine flowmeter capable of generating electric pulse signals for use.
And the control cabinet 8 is connected with the upper computer 4 and stores instantaneous and accumulated flow and pressure data in real time. And the preset total flow can be input in the upper computer 4 by controlling the preset flow, when the flow passing through the flowmeter 6 reaches the value, a signal is transmitted to the control cabinet 8, and the control cabinet 8 stops supplying power to close the electromagnetic valve 7.
The pressure sensor 9 adopts a multipoint film type pressure sensor, has the thickness of 1 mm-2 mm, is arranged on the inner wall of the sprue gate pipeline and measures the initial fluid pressure in real time. And the pressure data is remotely transmitted to the control cabinet 8 and even the upper computer 4 in real time through the signal acquisition and transmission system 10.
The front and rear pipelines of the flowmeter 6, the electromagnetic valve 7 and the pressure sensor 9 are all connected by PPR pipe joints, so that the flowmeter is convenient to disassemble, clean and check at regular time.
The flow control system and the pressure detection system are connected with the upper computer 4, and the upper computer 4 sends a starting signal to the PLC in an I/O communication mode, so that the whole experiment platform is controlled through the upper computer 4.
The specific control method comprises the following steps:
the upper computer 4 sends a starting signal to the flow control system and the pressure pump 2 in an I/O communication mode;
the pressure pump 2 pumps the experimental fluid into the material storage tank 3, the experimental fluid is stored in advance, the material storage tank 3 is arranged at a high position, and the initial speed required by the filling fluid is provided through gravitational potential energy;
the flowmeter 6 feeds the flow in the pouring pipeline back to the control cabinet 8 through an electric signal, and when the flow reaches a set value, the control cabinet 8 cuts off the power supply of the electromagnetic valve 7, so that the mold filling flow is controlled quantitatively;
the pressure of the filling fluid is monitored in real time through the pressure sensor 9, and the pressure sensor 9 wirelessly transmits a pressure signal to the upper computer 4 through the signal acquisition and transmission system 10.
Claims (3)
1. A quantitative gating system for centrifugal casting physical simulation experiment which characterized in that: comprises a base frame (1), a pressure pump (2), a storage box (3), a flow control system, a pressure detection system and an upper computer (4);
the material storage box (3) is positioned on a first support frame (12) at the top of a base frame (1) on the rack, and the material storage box (3) is connected with material storage and conveying through a pressure pump (2);
the bottom of the material storage box (3) is connected with a pouring gate through a pouring pipeline, and the pouring gate is over against the mold and the platform (14) thereof; a flow control system is arranged on the pouring pipeline and comprises a throttle valve (5), a flowmeter (6), an electromagnetic valve (7) and a control cabinet (8); the electromagnetic valve (7) and the flowmeter (6) are respectively connected with the control cabinet (8);
the pressure detection system comprises a pressure sensor (9) and a signal acquisition and emission system (10); the pressure sensor (9) is packaged on the inner wall of the pouring gate and is connected with the signal acquisition and emission system (10), and the signal acquisition and emission system (10) is in communication connection with the upper computer (4).
2. The quantitative gating system for centrifugal casting physical simulation experiments of claim 1, wherein: the different height of bed frame (1) in proper order the equidistance be equipped with a plurality of screw holes (11), first support frame (12) pass through the bolt installation through selecting screw hole (11) of different heights, still include second support frame (13), fix on bed frame (1) with the bolt equally for fixed and support the pouring pipeline.
3. The control method of the quantitative pouring system for the centrifugal casting physical simulation experiment according to claim 1 or 2, characterized by comprising the steps of:
the upper computer (4) sends a starting signal to the flow control system and the pressure pump (2) in an I/O communication mode;
the pressure pump (2) pumps the experimental fluid into the storage tank (3) to store the experimental fluid in advance, the storage tank (3) is arranged at a high position, and the initial speed required by the filling fluid is provided through gravitational potential energy;
the flow meter (6) feeds the flow in the pouring pipeline back to the control cabinet (8) through an electric signal, and when the flow reaches a set numerical value, the control cabinet (8) cuts off the power supply of the electromagnetic valve (7), so that the mold filling flow is controlled quantitatively;
the pressure of the filling fluid is monitored in real time through the pressure sensor (9), and the pressure sensor (9) wirelessly transmits a pressure signal to the upper computer (4) through the signal acquisition and transmission system (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039473.1A CN110751887A (en) | 2019-10-29 | 2019-10-29 | Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911039473.1A CN110751887A (en) | 2019-10-29 | 2019-10-29 | Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof |
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| CN110751887A true CN110751887A (en) | 2020-02-04 |
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| CN201911039473.1A Pending CN110751887A (en) | 2019-10-29 | 2019-10-29 | Quantitative pouring system for centrifugal casting physical simulation experiment and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957936A (en) * | 2020-08-24 | 2020-11-20 | 江西台德智慧科技有限公司 | Production process control system based on intelligent manufacturing |
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| KR101226219B1 (en) * | 2012-10-08 | 2013-01-30 | 에스에이치소재산업 주식회사 | Casting apparatus using rotatable mold changing unit |
| CN105328157A (en) * | 2015-10-08 | 2016-02-17 | 华中科技大学 | Vertical centrifugal casting system for physical simulation |
| CN108765578A (en) * | 2018-05-15 | 2018-11-06 | 华中科技大学 | Type fluid pattern three-dimensional camera system and method are filled in centrifugal casting physical analogy |
| CN109559597A (en) * | 2019-01-10 | 2019-04-02 | 河南工程学院 | A kind of vertical centrifugal paraffin casting machine |
-
2019
- 2019-10-29 CN CN201911039473.1A patent/CN110751887A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101226219B1 (en) * | 2012-10-08 | 2013-01-30 | 에스에이치소재산업 주식회사 | Casting apparatus using rotatable mold changing unit |
| CN105328157A (en) * | 2015-10-08 | 2016-02-17 | 华中科技大学 | Vertical centrifugal casting system for physical simulation |
| CN108765578A (en) * | 2018-05-15 | 2018-11-06 | 华中科技大学 | Type fluid pattern three-dimensional camera system and method are filled in centrifugal casting physical analogy |
| CN109559597A (en) * | 2019-01-10 | 2019-04-02 | 河南工程学院 | A kind of vertical centrifugal paraffin casting machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957936A (en) * | 2020-08-24 | 2020-11-20 | 江西台德智慧科技有限公司 | Production process control system based on intelligent manufacturing |
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Application publication date: 20200204 |