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Liftable small-sized process control experiment teaching device

A process control and teaching device technology, applied to teaching models, educational tools, instruments, etc., can solve problems such as unintuitive simulation of height drops, failure to meet the requirements of experiments, and failure to meet teaching tests, etc., to facilitate later maintenance, The device is stable and reliable, and the effect of ensuring sealing

Active Publication Date: 2019-11-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to provide a more diverse experimental environment, unable to meet the requirements of teaching and testing, especially the inability to intuitively simulate the height drop. In practical teaching, this part of the experiment is often ignored directly, or related experiments are carried out by means of padding. The degree of control and convenience is far from meeting the requirements of the experiment

Method used

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  • Liftable small-sized process control experiment teaching device
  • Liftable small-sized process control experiment teaching device
  • Liftable small-sized process control experiment teaching device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see Figure 1~3, in the example of the present invention, a small-scale process control experimental teaching device that can be lifted includes a water tank 1, a water tank cover plate 2, a lifting device 3, a liquid level gauge 4, a metal hose 5, a branch valve 6, a No. 1 container 7, No. 2 container 8, No. 3 container 9, temperature sensor 10, inlet pipeline main section 11, inlet valve 12, flow meter 13, pressure sensor 14, controller connecting plate 15, threaded rod 16, heating device, PWM submersible pump 18, The water tank cover plate 2 is fixed on the water tank 1, and there are three containers in total: the No. 1 container 7, the No. 2 container 8, and the No. 3 container 9. The tops of the three containers are connected through connecting pipes, and the connecting pipes are metal hoses. And the three containers are equipped with overflow pipelines, the overflow pipelines are metal hoses, the setting of the three overflow pipelines realizes the overflow prote...

Embodiment 2

[0047] Such as figure 1 , 3 , 4, 5, 6, and 7, the three lifting devices 3 are specifically small-scale mechanical shear lifts, which are respectively located at the bottom of No. 1 container 7, No. 2 container 8, and No. 3 container 9, and are connected to the water tank cover 2; the three lifting devices 3 are independent of each other. When the limit position is not reached, the three lifting devices will not interfere with each other. The mutual independence of the lifting devices 3 makes the first container 7, the second container 8 and the third container No. 9 containers are independent of each other, so that the relative vertical displacement between the three containers can be changed. The change of the relative vertical displacement between the three containers has very important applications in real scenes. If you want to implement water supply to different floors of an apartment, you can first conduct simulation analysis through this experimental device, and first ...

Embodiment 3

[0052] The U-shaped heating tube 17 is located inside the No. 3 container 9, and the number is one. The temperature sensor 10 is located in the No. 1 container 7, the No. 2 container 8, and the No. 3 container 9, and the number is three. Start the PWM submersible pump 18 to keep the inlet Valve 12, outlet valve 21 opening degrees are constant, set the target temperature in the No. 3 container 9, open the U-shaped heating tube 17 in the No. 3 container 9 to start heating, and the temperature sensor 10 measures the real-time temperature in the container, which can be used to The pure hysteresis experiment under simulated temperature control (the time required from setting the set temperature to detecting that the temperature reaches the set value is the lag time), and the application in Example 2.

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Abstract

The invention discloses a liftable small-sized process control experiment teaching device which comprises a liquid box; a liquid box cover plate is arranged at the top of the liquid box; the liftablesmall-sized process control experiment teaching device is characterizeed in that a plurality of lifting devices are arranged on the liquid box cover plate; correpsonding containers are above the lifting devices; a liquid conveying pipeline is arranged on the liquid box; the liquid conveying pipeline comprises a main pipe, a plurality of outlet branches are arranged at the rear section of the mainpipe, and are respectively connected to the tops of the side surfaces of the containers through respectively outlet branches, and a liquid convenying valve is arranged at the initial segment of the liquid conveying pipeline; in the liquid box, an immersible pump is arranged at the initial segment of the liquid conveying pipeline; the tops of all the containers are connected through connecting pipelines, the connecting parts of the connecting pipelines and the connecting parts of branch pipelines are positioned in the same horizontal position; tapping pipelines connected to the liquid box are arranged at the bottoms of the side surfaces of the containers; and an overflow pipeline connecting to the liquid box is arranged on the back side of the top of each container. According to the invention, by arranging the lifting structure, the liftable small-sized process control experiment teaching device achieves process control experiment teaching in the vertical direction on the basis of the prior art.

Description

technical field [0001] The invention relates to an experimental equipment for teaching, in particular to a small-sized process control experimental teaching device which can be lifted and lowered. Background technique [0002] Measurement and control and over-control majors, especially the practical teaching of measurement and control technology and instruments, process equipment and control engineering majors, need to use the process control experimental device platform so that students can understand the working principle of process control more clearly. The three-capacity liquid tank is a typical abstract model of many controlled objects in industrial processes, and it is widely representative in the research and application of nonlinear and large inertia process control. The realization of the test, measurement and automatic control and application of the liquid level, flow and pressure of the three-capacity liquid tank can be used as a typical experimental teaching cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 于春雨朱小兵袁梦佳彭伟明鲁豪杰王宇航
Owner SOUTHWEST PETROLEUM UNIV
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