CN212847331U

CN212847331U - Pitot tube flow velocity measurement experiment system capable of being remotely controlled

Info

Publication number: CN212847331U
Application number: CN202021278999.3U
Authority: CN
Inventors: 魏学睿; 赵文玉; 李海翔; 孙研
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-30
Anticipated expiration: 2030-07-02

Abstract

The utility model provides a pitot tube velocity of flow survey experimental system that can remote control. The system comprises a pitot tube flow velocity determination experimental device which can be controlled by a computer, a service manager and a user terminal; connecting a computer-controlled experimental device and a service manager through the Internet; the computer-controllable experimental device comprises a basic experimental device, a PLC control system, a touch screen computer, a camera and the like; the PLC control system controls the operation of the remotely controllable electronic experiment device; the camera monitors the running condition of the experiment in real time. The utility model discloses the rational utilization resource enlarges the crowd scope of benefiting, solves colleges and universities and does not have experimental condition, can not realize because of the relevant practice link of emergency, the problem that the simulation experiment lacks real experience etc. By sharing remote experiments, the teaching purpose is achieved, and the sharing education concept is realized.

Description

Pitot tube flow velocity measurement experiment system capable of being remotely controlled

Technical Field

The utility model relates to an education and teaching and industrial control technical field especially relate to a pitot tube velocity of flow survey experimental system that can remote control.

Background

At present, the water supply and drainage science and engineering major of colleges and universities in China generally need to set up related professional experiments, wherein the related professional experiments comprise Pitot tube flow velocity measurement experiments and the like. The experimental equipment at the present stage generally comprises a self-circulation water feeder, a silicon controlled stepless speed regulator, a water level regulating valve, a constant pressure water tank, a pitot tube, a tail water tank, a guide rail, a piezometer and the like. From the perspective of combining practical operation with the internet technology, in the hydraulic experiment operation process, experimental result data are obtained through an electronic water level meter, a pressure transmitter and the like which are installed on equipment, and the experimental data are directly transmitted to a computer for calculation through the control of a Programmable Logic Controller (PLC) system.

The domestic Pitot tube flow velocity measurement experiment platform at the present stage can be divided into two types: firstly, the students manually carry out experimental operation. Because the actual operation must be operated according to the experimental instruction, the influence of various factors is eliminated, and the inevitable system error exists in the experiment, multiple experiments are needed to obtain accurate experimental results, but in the actual operation, the multiple experiments are difficult to obtain the accurate experimental results; in actual operation, before each data is recorded, the numerical value of the instrument needs to be observed manually, and effective data can be obtained after the numerical value is stabilized. The colleges and universities who purchase experimental equipment can only provide experimental opportunities for local students, experimental resources cannot be fully utilized, and the experimental process of the local students has the defects of inconvenience, difficulty in obtaining accurate experimental data and the like, so that related experiments cannot be carried out in areas lacking experimental conditions, the students lack actual operation opportunities, cannot master experimental operation capacity, and cannot obtain practical and intuitive experimental data.

And secondly, an internet-based remote experiment scheme is mainly used for performing online simulation or virtual experiment by adopting a software simulation experiment platform, the experiment phenomenon and data of the scheme are obtained by software calculation under an ideal condition, the experiment environment is completely virtualized by software, the due authenticity in the experiment process is not available, the experiment process is solidified, various interference factors and errors existing in the actual condition cannot be simulated, the experiment process is convenient to know, the experiment effect is difficult to be compared with the real experiment, and the cultivation of the innovation capability and problem discovery consciousness of students is unfavorable.

Disclosure of Invention

An object of the utility model is to solve the defect that above-mentioned prior art exists, provide one kind and rely on the pitot tube velocity of flow survey experimental apparatus that can computer control, relevant equipment such as internet and user terminal, combine into the sharing system of one with pitot tube velocity of flow survey experiment platform, the user is at true experimental environment and condition under the experiment of development pitot tube velocity of flow survey.

A remotely operable pitot tube flow rate measurement experiment system, comprising: 1 or more computer-operable pitot tube flow rate measurement laboratory devices, a service manager, and 1 or more user terminals.

The pitot tube flow velocity measurement experimental device which can be controlled by the computer is connected with the service manager in a wired or wireless way through the internet; the service manager is connected with the user terminal through the Internet in a wired or wireless mode.

But pitot tube velocity of flow survey experimental apparatus that computer controlled includes electronic water level regulating valve, side-mounted formula electron fluviograph, constant voltage water tank, pitot tube, pressure transmitter, piezometric tube, slip dipperstick, go up wet return, but electromagnetic valve, check valve, variable frequency pump, self-loopa water feeder, manometer, mouthpiece, tail water tank and guide rail, PLC control system, touch-sensitive screen computer and camera that the computer controlled.

The constant pressure water tank is connected with a variable frequency pump through a pipeline, the variable frequency pump is arranged on the self-circulation water feeder, the side-mounted electronic water level meter is arranged on the constant pressure water tank and the tail water tank, the pressure transmitter is arranged on the upper water return pipe, the pressure gauge is connected with the pitot tube, the water inlet pipeline is provided with a computer-controlled electromagnetic valve, the upper water return pipeline is provided with a computer-controlled electromagnetic valve and a check valve, and the pressure gauge is connected with the pitot tube to enable the device to be still operated actually. The variable frequency pump is started to inject water into the constant pressure water tank through the electromagnetic valve which can be controlled by a computer, so that the constant pressure water tank overflows, the adjustable electric water level adjusting valve changes the height difference between the two water tanks, water enters the tail water tank through the nozzle and then flows back to the self-circulation water feeder through the upper water return pipe, when the water flow reaches stability, the pitot tube measures the flow speed at the moment, and signals are transmitted to the PLC control system through the side-mounted water level meter and the pressure transmitter to perform data transmission, so that the flow speed at the moment is calculated according to a formula.

The service manager comprises a management platform, wherein the management platform comprises a login interface of the pitot tube flow velocity measurement experiment device which can be controlled by a computer, and an interface for a user to login and select a certain pitot tube flow velocity measurement experiment device which can be controlled by the computer to carry out related experiments.

The user terminal comprises a computer or a mobile phone; the mobile phone or the computer is connected with an operation platform of the service manager in a wired or wireless way through the internet, and the selected pitot tube flow velocity measurement experiment device which can be controlled by the computer is remotely controlled to finish the pitot tube flow velocity measurement experiment.

Furthermore, as for the pitot tube flow velocity measurement experiment system capable of being controlled by the computer, 4 measuring points are arranged on the pitot tube flow velocity measurement device capable of being controlled by the computer, wherein side-mounted electronic water level meters are arranged at the measuring points on the constant pressure water tank and the tail water tank, and two pressure transmitters are arranged on an upper water return pipeline; and the measured data is transmitted to the PLC control system through collection, the data is reflected on the touch screen computer, and then the flow velocity of the water at the moment is calculated through the data.

Has the advantages that:

the utility model provides a pair of but remote control's pitot tube velocity of flow survey experimental system relies on relevant laboratory glassware such as internet and sensor, combines pitot tube velocity of flow survey experiment into a shared system, carries out pitot tube velocity of flow survey experiment under real experimental environment and condition, shows the measurement parameter of the requirements such as flow, pressure, the velocity of flow of each measurement station in real time at the user side. On the premise of verifying authenticity and operability, results can be output, the experiment processes and data can be displayed on a user end in real time through the sensors and the cameras, the user can input relevant data before the experiment through the mobile portable device or the computer through remote control, observe the experiment processes and the data in real time, and derive the relevant experiment data.

The utility model discloses solved to a certain extent that colleges and universities offer the relevant problem that pitot tube velocity of flow survey experiment exists today to the rational utilization resource, for the domestic student's of the plumbing science of the colleges and universities that lacks this experimental condition and engineering specialty, through sharing remote experiment, reach the teaching purpose, realize sharing education theory.

Drawings

Figure 1 is the utility model discloses but remote control's pitot tube velocity of flow survey experimental system's schematic diagram.

FIG. 2 is a schematic view of the experimental apparatus for measuring the velocity of a pitot tube which can be controlled by a computer.

The labels in the figure are: 1-an electric water level regulating valve; 2-a first side-mounted electronic water level meter; 3-constant pressure water tank; 4-Pitot tube; 5-a second side-mounted electronic water level meter; 6-a pressure transmitter; 7-piezometric tube; 8-sliding measuring scale; 9-an upper water return pipe; 10-a first computer-operable solenoid valve; 11-a check valve; 12-a second computer-operable solenoid valve; 13-a variable frequency pump; 14-self-circulating water supply; 15-a manometer; 16-a camera; 17-a nozzle; 18-a tail water tank; 19-touch screen computer; and 20-a PLC control system.

FIG. 3 is a schematic diagram of the Pitot tube flow velocity measurement experimental apparatus of the utility model which can be controlled by a computer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b):

FIG. 1 is a schematic diagram of the remotely controllable Pitot tube flow velocity measurement experiment system of the present invention; the pitot tube velocity measurement experiment system that this embodiment provided can remote control includes: 3 pitot tube velocity measurement experimental apparatus that can be controlled by computer, service manager and 30 user terminals.

The utility model provides a but remote control's pitot tube velocity of flow survey experimental system, user terminal's form is computer client or mobile terminal, and management server connects 30 user terminal.

The utility model provides a but remote control's pitot tube velocity of flow survey experimental system utilizes keyboard or touch-sensitive screen that are furnished with on the user terminal get into the operation platform among the management server, and then but the selected pitot tube velocity of flow survey experimental apparatus that computer controlled of control accomplishes remote experiment operation, acquires real-time experiment image and data, passes to user terminal through the management server, accomplishes a pitot tube velocity of flow survey experiment.

The remotely controllable Pitot tube flow velocity measurement experiment system can simultaneously develop the teaching experiment of the Pitot tube flow velocity measurement experiment platform. In this embodiment, 30 pitot tube flow rate measurement experimental devices can be controlled by a computer in the remote experimental system and are managed by the management server in a unified manner.

FIG. 2 is a schematic diagram of a computer-controlled experimental apparatus for measuring the velocity of a pitot tube of the present invention; as shown in fig. 2, the experimental apparatus for pitot tube flow rate measurement which can be operated by computer comprises: the water level control system comprises an electric water level adjusting valve 1, a first side-mounted electronic water level gauge 2, a constant pressure water tank 3, a pitot tube 4, a second side-mounted electronic water level gauge 5, a pressure transmitter 6, a piezometric tube 7, a sliding measuring scale 8, an upper water return pipe 9, a first computer-controlled electromagnetic valve 10, a check valve 11, a second computer-controlled electromagnetic valve 12, a variable frequency pump 13, a self-circulation water feeder 14, a piezometric meter 15, a camera 16, a nozzle 17, a tail water tank 18, a touch screen computer 19 and a PLC (programmable logic controller) control system 20.

Constant voltage water tank 3 has the pipeline to be connected with inverter pump 13, but open inverter pump 13 and by the electromagnetic valve 12 water injection to constant voltage water tank 3 that the second computer controlled, make constant voltage water tank 3 have the overflow, water passes through mouthpiece 17 and gets into tail water tank 18, when rivers reach the stability, pitot tube 4 surveys the velocity of flow at this moment, pass through first side dress formula electronic fluviograph 2, second side dress formula electronic fluviograph 5 and pressure transmitter 6 signal to PLC control system 20, carry out data transmission, thereby calculate the velocity of flow this moment according to the formula.

The utility model provides a but remote control's pitot tube velocity of flow survey experimental system relies on internet technology, but combine into a shared system with many computer-controlled pitot tube velocity of flow survey experimental apparatus, carry out pitot tube velocity of flow survey experiment under real experimental environment and condition, show the water level height of constant voltage water tank 3 and tail water tank 18, the full head and static head equal measurement parameter of 4 both sides of pitot tube in real time at the user side, watch experimental phenomenon through camera 16. On the premise of verifying authenticity and operability, the result can be output, curve drawing and the like, each sensor and the camera 16 thereof can display the experimental process and data on the user end in real time, and the user can input relevant data before the experiment on the mobile portable equipment through remote control, observe the experimental process and the data in real time and derive the relevant experimental data.

The remote experiment system contains 30 user terminals to access the management server through the network, the user terminals independently exist, and different students perform experiments on different user terminals. The user terminal can be a computer client or a mobile terminal such as a mobile phone, and the specific form is not limited.

In order to accurately measure various parameters of the water inlet pipeline, the water inlet pipeline is provided with: a second computer-operable solenoid valve 12.

The pressure transmitter 6 is arranged on each measuring point of the upper water return pipe 9, and the second electromagnetic valve 12 which can be controlled by a computer is arranged on a connecting pipeline between the variable frequency pump 13 and the constant pressure water tank 3 and is used for injecting water into the constant pressure water tank 3; a first computer-operable solenoid valve 10 is mounted on the rear half of the upper return pipe 9 for controlling the amount of water flow into the self-circulating water feeder 14.

The pitot tube flow velocity measurement experimental device capable of being controlled by a computer comprises a constant pressure water tank 3 and a tail water tank 18 which are arranged on an experimental platform frame, wherein a first side-mounted electronic water level gauge 2 and a second side-mounted electronic water level gauge 5 are respectively arranged in the constant pressure water tank 3 and the tail water tank 18, and pressure transmitters 6 are arranged on two measuring points on a pipeline for discharging water from the tail water tank 18 and are used for transmitting a full pressure water head and a static pressure water head on two sides of the pitot tube 4 in real time.

Further, as mentioned above, the service manager includes a management platform, the management platform includes a login interface of the pitot tube flow rate measurement experiment device which can be controlled by a computer, a user login interface and an interface for selecting a pitot tube flow rate measurement experiment device which can be controlled by a computer to carry out related experiments, the service manager and the pitot tube flow rate measurement experiment device which can be controlled by a computer are connected through internet by wire or wireless; the service manager is connected with the user terminal through the internet in a wired or wireless mode.

Further, the user terminal comprises a computer or a mobile phone; the mobile phone or the computer is connected with an operation platform of the service manager in a wired or wireless way through the internet, and the selected pitot tube flow velocity measurement experiment device which can be controlled by the computer is remotely controlled to finish the pitot tube flow velocity measurement experiment. The data to be acquired by the data acquisition equipment comprises water level difference: measured by a first side-mounted electronic water level meter 2 on the constant-pressure water tank 3 and a second side-mounted electronic water level meter 5 on the tail water tank 18; pressure: measured by the pressure transmitter 6 at each measuring point on the upper water return pipeline 9.

The image acquisition equipment comprises but is not limited to a camera 16, the camera 16 is fixed on a pitot tube flow velocity measurement experiment device operating platform support which can be controlled by a computer, is connected with a PLC control system 20 and further connected with a touch screen computer 19, and is displayed and controlled (long-range view or close-range view) on the computer. Because the student is far away from the experimental apparatus, the student can not go to the operation of on-the-spot observation equipment, and remote student's accessible camera 16 comes the operation condition of observation equipment and relevant experimental phenomenon or experimental result.

The method adopts a mode of 'hardware equipment entity-real experiment scene-remote operation panel', remotely controls the Pitot tube flow rate measurement experiment device which can be controlled by a computer according to experiment control information input by students at a user terminal, and carries out required related professional experiments. The students can carry out experiments at any time and any place through the network, and do not need to specially carry out experiments in a fixed laboratory, thereby realizing the teaching at different places through the network and playing a great role in promoting the improvement of the innovation capability and the comprehensive capability of the students. Meanwhile, the experimental data generated in the experiment is real data generated by a remote experimental device, and is not software simulation data, so that convenience is provided for students, and the enthusiasm of the students in doing the experiment can be aroused. In addition, because the experimental hardware is arranged on the remote experimental equipment, the requirement on the hardware of the user terminal is not high, and students can complete experiments on common computers or even mobile terminals. The utility model discloses a social sharing of experimental resources has compensatied the not enough of shared education practice link, has fully highlighted the new development of shared education under the internet environment now.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A remotely controllable experimental system for measuring the flow rate of a pitot tube is characterized in that the remotely controllable experimental system for measuring the flow rate of the pitot tube comprises 1 or more experimental devices for measuring the flow rate of the pitot tube, a service manager and 1 or more user terminals, wherein the experimental device is operated by a computer;

the pitot tube flow velocity measurement experimental device which can be controlled by the computer is connected with the service manager in a wired or wireless way through the internet; the service manager is connected with the user terminal through the Internet in a wired or wireless mode;

the pitot tube flow velocity measurement experimental device capable of being controlled by a computer comprises an electric water level adjusting valve (1), a first side-mounted electronic water level meter (2), a second side-mounted electronic water level meter (5), a constant pressure water tank (3), a pitot tube (4), a pressure transmitter (6), a pressure measuring tube (7), a sliding measuring scale (8), an upper water return pipe (9), a first computer-controlled electromagnetic valve (10), a second computer-controlled electromagnetic valve (12), a check valve (11), a variable frequency pump (13), a self-circulation water feeder (14), a pressure measuring meter (15), a nozzle (17), a tail water tank (18), a PLC control system (20), a touch screen computer (19) and a camera (16);

a first side-mounted electronic water level meter (2) and an electric water level regulating valve (1) are arranged on the constant-pressure water tank (3); a second side-mounted electronic water level meter (5) is arranged on the tail water tank (18); a variable frequency pump (13) is arranged on the self-circulation water feeder (14); a second electromagnetic valve (12) which can be controlled by a computer is arranged on the water inlet pipeline; the pressure gauge (15) is connected with the upper water return pipe (9); constant voltage water tank (3) have the inlet channel to be connected with inverter pump (13), but open inverter pump (13) and by the electromagnetic valve (12) water injection to constant voltage water tank (3) that the second computer controlled, make constant voltage water tank (3) have the overflow, water gets into tailwater tank (18) through mouthpiece (17), when rivers reach the stability, pitot tube (4) survey this time velocity of flow, through first side dress formula electron fluviograph (2), second side dress formula electron fluviograph (5) and pressure transmitter (6) data transmission to PLC control system (20) surveyed, data reflection is on touch-sensitive screen computer (19), and then by the velocity of flow of data calculation this moment water.

2. The remotely controllable experimental system for pitot flow rate measurement according to claim 1 wherein the service manager includes a management platform, the management platform including a login interface for the computer controllable experimental device for pitot flow rate measurement and an interface for the user to login and select a particular experimental device for pitot flow rate measurement for the computer controllable experimental device for conducting related experiments.

3. The remotely steerable pitot tube flow rate measurement experimental system of claim 1 wherein the user terminal comprises a computer or a cell phone; the mobile phone or the computer is connected with an operation platform of the service manager in a wired or wireless way through the internet, and the selected pitot tube flow velocity measurement experiment device which can be controlled by the computer is remotely controlled to finish the pitot tube flow velocity measurement experiment.

4. The remotely controllable pitot tube flow rate measurement experiment system according to claim 1, wherein the computer controllable pitot tube flow rate measurement experiment device has 4 measuring points, wherein the measuring points on the constant pressure water tank (3) and the tail water tank (18) are respectively provided with a first side-mounted electronic water level gauge (2) and a second side-mounted electronic water level gauge (5), and the upper water return pipe (9) is provided with two pressure transmitters (6).