CN110570717A - Real standard equipment of pump system teaching - Google Patents
Real standard equipment of pump system teaching Download PDFInfo
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- CN110570717A CN110570717A CN201911019450.4A CN201911019450A CN110570717A CN 110570717 A CN110570717 A CN 110570717A CN 201911019450 A CN201911019450 A CN 201911019450A CN 110570717 A CN110570717 A CN 110570717A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 194
- 238000012549 training Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 abstract description 5
- 238000005273 aeration Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 19
- 230000001276 controlling effect Effects 0.000 description 15
- 238000005457 optimization Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
-
- 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
- G09B9/00—Simulators for teaching or training purposes
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a pump system teaching and practical training device which comprises a water pool for simulating water stored in a water plant, wherein a main pipeline forming a circulating water path is arranged below the water pool, an auxiliary pipeline is communicated with the main pipeline, a water treatment device for simulating water treatment is arranged on one side of the water pool, and the main pipeline, the auxiliary pipeline and the water treatment device are controlled by an automatic control system to operate. The screw pump cold-state driving system is ingenious in concept, reasonable in structure and wide in application scene, 4 pumps are arranged in the system, and can be switched at will only by selecting programs, disassembly is not needed, the system is simple and convenient, examination contents such as screw pump cold-state driving, jet pump cold-state driving, aeration calculation, dosing agent amount calculation and the like can be performed on students, and the examination contents are wide; and the whole pipeline has high connection strength, strong corrosion resistance, long service life, convenient disassembly, low cost and high safety protection degree.
Description
Technical Field
the invention relates to a teaching and practical training device, in particular to a pump system teaching and practical training device capable of improving the manual power of students and testing teaching results, and belongs to the technical field of education.
Background
With the increase of the development level of socio-economic, a large amount of sewage is generated in the life and production, which means that complicated technology and equipment are applied to the sewage treatment of water plants. Therefore, a great deal of water treatment skills need to be trained to participate in the maintenance of equipment and the troubleshooting of pump systems and pipeline equipment in the operation process of the water plant.
The existing water treatment practical training device is built and finished only by a small amount of pipelines and pumps, so that the complex water treatment environment is difficult to simulate, and the practice ability of students and the teaching results of test training personnel can not be effectively improved.
Disclosure of Invention
The invention mainly solves the technical problem that
In order to solve the technical problems, the invention provides the following technical scheme:
The utility model provides a real standard equipment of pump system teaching, is provided with the main road pipeline that constitutes the circulation water route including the pond that is arranged in simulating the water plant to store water in, the below in pond, and the intercommunication has the auxiliary road pipeline on the main road pipeline, and one side of pond is provided with the water treatment facilities of simulation water treatment, and main road pipeline, auxiliary road pipeline and water treatment facilities are operated by automatic control system control.
The following is a further optimization of the above technical solution of the present invention:
The water treatment device comprises an electromagnetic air pump arranged outside the water pool, the output end of the electromagnetic air pump is communicated with an air delivery pipe, and the other end of the air delivery pipe extends into the position below the liquid level in the water pool.
Further optimization: the water tank is arranged outside the water tank, the metering pump is fixedly mounted on the water tank, the water inlet end of the metering pump is communicated with the water tank, and the water outlet end of the metering pump is communicated to the water tank through a water conveying pipe.
Further optimization: the main pipeline comprises a main pipeline, the water inlet end of the main pipeline is installed at the bottom of the water pool and communicated with the water pool, the water outlet end of the main pipeline is branched into two water outlet branches, one water outlet branch is installed at the bottom of the water pool and communicated with the water pool, and the other water outlet branch is installed above the water pool and communicated with the water pool.
Further optimization: and a first butterfly valve, a Y-shaped filter, a screw pump, a second ball valve, a second butterfly valve, a flowmeter, a pneumatic valve and an electromagnetic proportional valve are sequentially and serially arranged on the main pipeline according to the water flow direction.
Further optimization: the pneumatic valve is arranged on the main pipeline in series and is positioned on one side of a water outlet of the flowmeter, and the electromagnetic proportional valve is arranged on the main pipeline in series and is positioned on a water outlet branch at the bottom of the water pool.
Further optimization: still communicate the reposition of redundant personnel pressure release return circuit on the main pipeline, reposition of redundant personnel pressure release return circuit includes relief valve and first ball valve, and the end of intaking and the play water end of relief valve are connected respectively through the connecting pipe on the main pipeline of the end of intaking and play water end department of screw pump.
Further optimization: and the main pipeline and the shunting pressure relief loop are respectively provided with a first pressure sensor and a second pressure sensor which are used for monitoring the water pressure in the pipeline.
Further optimization: the auxiliary pipeline comprises an auxiliary pipeline, a third ball valve, a first electromagnetic valve, an injection pump, a second electromagnetic valve and a fourth ball valve are arranged on the auxiliary pipeline in series on one side of the water flow direction, the water inlet end of the auxiliary pipeline is communicated with one side, close to the water outlet end of the Y-shaped filter, of the main pipeline, and the water outlet end of the auxiliary pipeline is communicated with one side, close to the water inlet end of the second butterfly valve, of the main pipeline.
Further optimization: the automatic control system comprises a PLC controller, and the signal output end of the PLC controller is respectively connected with the electromagnetic air pump, the metering pump, the screw pump and the pneumatic valve; an electromagnetic proportional valve; the control ends of the first electromagnetic valve, the injection pump and the second electromagnetic valve are electrically connected, and the control input end of the PLC is connected with the touch screen.
The invention adopts the pump system teaching training equipment to carry out the teaching and training method, which comprises the following steps:
1) turning on a power supply, turning on a main switch (which needs to be met) when all actions are in a closed state, and then turning on S1, P1, a contactor Q2 and a PLC controller for starting;
2) After the system is started, an air pump starting button is pressed, a contactor Q8 is used for controlling the electromagnetic air pump to be started in an attracting mode, an air pump closing button is pressed, and the electromagnetic air pump is stopped;
3) after the system is started, a metering pump starting button is pressed, and a contactor Q10 is used for attracting and controlling the starting of the metering pump; pressing a metering pump closing button to stop the metering pump;
4) After the system is started, a pneumatic valve starting button is pressed, and a contactor Q3 is used for attracting and controlling the pneumatic valve to start; pressing a pneumatic valve closing button to stop the pneumatic valve;
5) After the system is started, a forward rotation button of the electromagnetic proportional valve is pressed, and a contactor Q4 is used for attracting and controlling the forward rotation of the electromagnetic proportional valve to be started; pressing a closing button to stop the electromagnetic proportional valve; pressing down an electromagnetic proportional valve reverse button, attracting by a contactor Q5, and starting the electromagnetic proportional valve in a reverse way; pressing a closing button to stop the electromagnetic proportional valve;
6) After the system is started, a button of a water inlet electromagnetic valve is pressed, and a contactor Q6 is used for attracting and controlling a first electromagnetic valve M2 to be started; pressing a closing button to stop the first electromagnetic valve;
7) After the system is started, opening a first butterfly valve, opening a second ball valve, opening a second butterfly valve, opening a pneumatic valve, closing a fourth ball valve, closing the first ball valve, pressing a screw pump forward rotation button, starting the screw pump in forward rotation, pressing a closing button, and stopping the screw pump from running;
8) After the system is started, opening a first butterfly valve, closing a first ball valve, opening a second butterfly valve, closing a fourth ball valve, opening a pneumatic valve and opening an electromagnetic proportional valve; pressing down a screw pump reverse button to reversely start the screw pump, and pressing down a closing button to stop the screw pump;
9) After the system is started, opening a first butterfly valve, opening a third ball valve, opening a first electromagnetic valve, opening a fourth ball valve, closing a second ball valve, opening a second butterfly valve and opening a pneumatic valve; pressing a jet pump starting button, starting the jet pump, and opening the second electromagnetic valve after delaying; the jet pump is turned off by pressing the jet pump off button.
By adopting the technical scheme, the invention has the advantages of ingenious conception, reasonable structure, higher integral processing speed, stronger networking capability, high diagnosis capability and safety, capability of saving cost and improving production efficiency, safety, reliability, simple and convenient maintenance, powerful configuration programming function and free programming by a user;
The system has wide application scenes, 4 pumps are arranged in the system, can be switched at will only by selecting programs, is not required to be disassembled, is simple and convenient, can carry out examination contents such as screw pump cold-state driving, jet pump cold-state driving, aeration calculation, dosing quantity calculation and the like on students, and has very wide examination contents;
and the whole pipeline connection intensity is big, and corrosion resistance is strong, live time is of a specified duration, it is convenient to dismantle, low cost, and the safety protection degree is high, to no harm and pollution-free, the low noise of player and student, and compare with the same type system abroad, the price is only one tenth of it.
The invention is further illustrated with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control circuit in an embodiment of the invention;
FIG. 3 is a schematic diagram of PLC control in an embodiment of the present invention;
FIG. 4 is a schematic diagram of PLC control in an embodiment of the present invention;
FIG. 5 is a schematic diagram of PLC control in an embodiment of the present invention;
FIG. 6 is a schematic diagram of PLC control in an embodiment of the present invention.
In the figure: 1-a water pool; 2-a liquid level meter; 3-a touch screen; MA 3-electromagnetic air pump; MA 5-metering pump; 6-a water tank; LV 1-first butterfly valve; an 8-Y filter; 9-drainage exhaust port, 10-first pressure sensor; 11-safety valve; LV2 — first ball valve; 13-a second pressure sensor; MA 1-screw pump; OV 1-second ball valve; OV 2-second butterfly valve; 17-a flow meter; OV3 — pneumatic valve; OV 4-electromagnetic proportional valve; LV 3-third ball valve; m2-first solenoid valve; MA 4-jet pump; 23-pressure gauge; m3-second solenoid valve; OV 5-fourth ball valve; 26-main pipeline; 27-auxiliary line.
Detailed Description
example (b): referring to fig. 1-2, a pump system teaching training device comprises a pool 1 for simulating water stored in a water plant, a main pipeline forming a circulating water path is arranged below the pool 1, an auxiliary pipeline is communicated with the main pipeline, a water treatment device for simulating water treatment is arranged on one side of the pool 1, and the main pipeline, the auxiliary pipeline and the water treatment device are controlled by an automatic control system to operate.
and a liquid level meter 2 for displaying the liquid level of water in the water pool 1 in real time is vertically and fixedly arranged on the water pool 1.
the water treatment device comprises an electromagnetic air pump MA3 arranged outside the water pool 1, the output end of the electromagnetic air pump MA3 is communicated with an air delivery pipe, and one end of the air delivery pipe, which is far away from the electromagnetic air pump MA3, extends into the position below the liquid level in the water pool 1.
by adopting the design, the electromagnetic air pump MA3 can be used for continuously sending external air into the water pool 1, so that the water in the water pool 1 is aerated, the contact area of the water and the air is increased, and sufficient dissolved oxygen is obtained in the water body.
The water tank 6 is arranged outside the water pool 1, the metering pump MA5 is fixedly mounted on the water tank 6, the water inlet end of the metering pump MA5 is communicated with liquid medicine stored in the water tank 6, and the water outlet end of the metering pump MA5 is communicated with the water tank 6 through a water conveying pipe.
Design like this, accessible water tank 6 is used for storing liquid medicines such as the used flocculating agent of processing waste water, through measuring pump MA5 can be accurate with the liquid medicine in the water tank 6 transport to pond 1 in, thereby realize accurately throwing and add water treatment liquid medicine and guarantee good water treatment effect.
The main pipeline comprises a main pipeline 26, the water inlet end of the main pipeline 26 is installed at the bottom of the pool 1 and communicated with the pool 1, the water outlet end of the main pipeline 26 is branched into two water outlet branches, one of the water outlet branches is installed at the bottom of the pool 1 and communicated with the pool 1, and the other water outlet branch is installed above the pool 1 and communicated with the pool 1.
The main pipeline 26 is provided with a first butterfly valve LV1, a Y-shaped filter 8, a screw pump MA1, a second ball valve OV1, a second butterfly valve OV2, a flowmeter 17, a pneumatic valve OV3 and an electromagnetic proportional valve OV4 in sequence according to the water flow direction.
the first butterfly valve LV1 is arranged on the main pipeline 26 in series and close to the water inlet end of the main pipeline 26, and the first butterfly valve LV1 is used for directly controlling the on-off of the main pipeline 26.
The Y-shaped filter 8 is arranged on the main pipeline 26 in series and is positioned behind the water outlet end of the first butterfly valve LV1, and the Y-shaped filter 8 is used for preliminarily removing impurities in water entering the main pipeline 26 from the pool 1 so as to protect the normal use of all valves and equipment.
The water inlet and the water outlet of the screw pump MA1 are respectively arranged on the main pipeline 26 in series, and the output power of the screw pump MA1 is used for driving water in the main pipeline 26 to flow in a pressurized mode.
the second ball valve OV1 is arranged in series on the main pipeline 26 and is positioned at the water outlet side of the screw pump MA1, and the second ball valve OV1 is manually rotated and is used for cutting off or opening the main pipeline 26.
The second butterfly valve OV2 is arranged on the main pipeline 26 and is positioned at one side of the water outlet of the second ball valve OV1, and the second butterfly valve OV2 is manually rotated and used for cutting off or opening whether the water in the main pipeline 26 flows back to the water pool 1 or not.
The flowmeter 17 is arranged on the main pipeline 26 in series and is positioned at one side of the water outlet of the second butterfly valve OV2, and the flowmeter 17 is a tubular flowmeter and is used for monitoring the flow of water in the main pipeline 26 at any time.
The pneumatic valve OV3 is arranged on the main pipeline 26 in series and is positioned at the water outlet side of the flowmeter 17, the pneumatic actuator of the pneumatic valve OV3 is connected with an external air compressor, and the pneumatic valve OV3 is used for automatically controlling whether water in the main pipeline 26 flows back to the water pool 1.
the electromagnetic proportional valve OV4 is serially connected on the main pipeline 26 and is located on the water outlet branch at the bottom of the water pool 1, and the electromagnetic actuator MA2 of the electromagnetic proportional valve OV4 can be opened at any opening degree according to requirements, so that the flow passing through the water outlet branch at the bottom of the water pool 1 can be controlled, the flow of the water outlet branch at the bottom of the water pool 1 of the main pipeline 26 can be controlled, and the water liquid in the main pipeline 26 can enter the bottom of the water pool 1.
A first pressure sensor 10 for constantly monitoring the water pressure in the main pipeline 26 is arranged on one side of the main pipeline 26 close to the outlet of the Y-shaped filter 8.
By adopting the design, the first pressure sensor 10 can be used for constantly monitoring the water pressure in the main pipeline 26, so that whether the blockage problem exists in the main pipeline 26 or the condition that the water pressure fluctuation in the main pipeline 26 is abnormal due to the existence of gas can be judged.
And a drainage and exhaust port 9 is arranged on one side of the main pipeline 26 close to the outlet of the Y-shaped filter 8, and a control ball valve is arranged on the drainage and exhaust port 9.
By the design, the control ball valve can be used for opening or closing the drainage and exhaust port 9, the drainage and exhaust port 9 can be used for discharging gas in a pipeline in operation, the pipeline is prevented from being subjected to pressure building, and the drainage and exhaust port 9 can be used for sampling water in the main pipeline 26.
The water outlet end of the Y-shaped filter is connected with an auxiliary pipeline and a drainage exhaust port 9 which is arranged on the main pipeline and used for discharging gas in the pipeline in operation and preventing the pipeline from causing pressure building.
By the design, whether the pipeline is blocked or abnormal pressure caused by gas exists can be judged by detecting the pressure of the first pressure sensor 10 in the pipeline, so that the gas is discharged through the drainage and exhaust port 9 in time or the blockage in the pipeline is cleaned in time.
The main pipeline 26 is also communicated with a flow-dividing and pressure-releasing loop, the flow-dividing and pressure-releasing loop comprises a safety valve 11 and a first ball valve LV2, and the water inlet end and the water outlet end of the safety valve 11 are respectively connected to the main pipeline 26 at the water inlet end and the water outlet end of the screw pump MA1 through connecting pipes.
The first ball valve LV2 is arranged in parallel with the safety valve 11, and the water inlet end and the water outlet end of the first ball valve LV2 are respectively connected to the main pipeline 26 at the water inlet end and the water outlet end of the screw pump MA1 through connecting pipes.
By the design, the safety valve 11 and the first ball valve LV2 can be connected to the main pipeline 26 at the water inlet end and the water outlet end of the screw pump MA1 in a parallel connection mode, and when the water pressure entering the water inlet end of the screw pump MA1 in the main pipeline 26 is too high, the safety valve 11 or the first ball valve LV2 can be opened or the first ball valve LV2 of the safety valve 11 can be opened simultaneously, so that the water pressure at the water inlet end of the screw pump MA1 can be reduced, and equipment damage is avoided.
A second pressure sensor 13 is arranged on a connecting pipe at the connection between the water outlet end of the first ball valve LV2 and the main pipeline 26, and the second pressure sensor 13 is used for constantly monitoring the water pressure of the first ball valve LV2 and the water outlet end of the safety valve 11 entering the main pipeline 26.
the auxiliary pipeline comprises an auxiliary pipeline 27, and a third ball valve LV3, a first electromagnetic valve M2, an injection pump MA4, a second electromagnetic valve M3 and a fourth ball valve OV5 are arranged on the auxiliary pipeline 27 in series on one side of the water flow direction.
The water inlet end of the auxiliary pipeline 27 is communicated with one side, close to the water outlet end of the Y-shaped filter 8, of the main pipeline 26, and the water outlet end of the auxiliary pipeline 27 is communicated with one side, close to the water inlet end of the second butterfly valve OV2, of the main pipeline 26.
And a pressure gauge 23 for monitoring the water outlet pressure of the jet pump 22 at any time is arranged on the auxiliary pipeline 27 and close to the water outlet end of the jet pump 22.
By adopting the design, the pressure gauge 23 can be used for monitoring the water pressure at the water outlet end of the jet pump 22 at any time, and the working state of the jet pump 22 and the blockage condition of the pipeline can be judged according to the reading range value of the pressure gauge 23.
As shown in FIG. 2, the power connection end of the screw pump MA1 is connected with the power outlet end of a frequency converter, the power inlet end of the frequency converter is connected with a contactor Q2, and the power inlet end of the contactor Q2 is connected to a power supply through a circuit breaker and a fuse.
The contactor Q2 is used for controlling the start of screw pump MA1, and the frequency converter can change the frequency and then control the rotational speed of screw pump MA 1.
The inlet line end of the electromagnetic actuator MA2 of the electromagnetic proportional valve OV4 is respectively connected with a forward rotation control contactor Q4 and a reverse rotation control contactor Q5 for controlling the forward rotation or the reverse rotation of the electromagnetic proportional valve OV 4.
The forward rotation control contactor Q4 and the reverse rotation control contactor Q5 are respectively used for controlling the forward rotation or the reverse rotation of an electromagnetic actuator MA2 of the electromagnetic proportional valve OV 4.
A contactor Q6 for controlling the opening or closing of the first electromagnetic valve M2 is connected to the inlet line end of the first electromagnetic valve M2.
A contactor Q7 for controlling the opening or closing of the second electromagnetic valve M3 is connected to the inlet line end of the second electromagnetic valve M3.
The inlet line end of the electromagnetic air pump MA3 is connected with a contactor Q8 for controlling the electromagnetic air pump MA3 to be opened or closed.
A contactor Q9 for controlling the opening or closing of the jet pump MA4 is connected to the inlet line end of the jet pump MA 4.
As shown in fig. 1 to 6, the automatic control system includes a PLC controller, a control input end of the PLC controller is connected to a touch screen 3, the touch screen 3 can clearly and intuitively see a distribution condition of a flow rate and a change condition of a pressure, and can send a command to output a control signal through the PLC controller.
The PLC is a Siemens S7-1500 PLC.
The signal output end of the PLC controller is respectively connected with an electromagnetic air pump MA3, a metering pump MA5, a screw pump MA1 and a pneumatic valve OV 3; an electromagnetic proportional valve OV 4; the control ends of the first electromagnetic valve M2, the injection pump MA4 and the second electromagnetic valve M3 are electrically connected, and the PLC can send out electric signals for controlling the corresponding execution elements to work.
The signal input part of PLC controller respectively with first pressure sensor 10, second pressure sensor 13 electric connection, the pressure value that first pressure sensor 10, second pressure sensor 13 monitored is given the PLC controller, and then touch-sensitive screen 3 can show the change condition of pressure in real time.
The PLC controller is also provided with an emergency stop switch S0, a manual starting button S1, a reset switch S2 and a manual or automatic program change-over switch S3.
as shown in fig. 1 to 6, the training method for performing training by using the pump system teaching training device of the present invention specifically includes the following steps:
1. and (4) turning on the power supply, turning on S3 (which must be satisfied) first, then turning on S1, and starting the P1, the contactor Q2 and the PLC controller.
2. After the system is started, an air pump starting button is pressed, a contactor Q8 is attracted, an electromagnetic air pump MA3 is started, an air pump closing button is pressed, and the electromagnetic air pump MA3 is stopped.
3. After the system is started, a metering pump starting button is pressed, a contactor Q10 is attracted, and a metering pump MA5 is started; the metering pump MA5 is stopped by pressing the metering pump off button.
4. After the system is started, a pneumatic valve starting button is pressed, the contactor Q3 is closed, and the pneumatic valve OV3 is started. Pneumatic valve OV3 is deactivated by depressing the pneumatic valve close button.
5. After the system is started, a forward rotation button of the electromagnetic proportional valve is pressed, the contactor Q4 is attracted, and the electromagnetic proportional valve OV4 is started in a forward rotation mode; pressing the closing button stops the electromagnetic proportional valve OV 4;
Pressing down a reverse button of the electromagnetic proportional valve, attracting by a contactor Q5, and reversely starting the electromagnetic proportional valve OV 4; pressing the close button stops the electromagnetic proportional valve OV 4.
6. after the system is started, a button of a water inlet electromagnetic valve is pressed, a contactor Q6 is attracted, and a first electromagnetic valve M2 is started; the first solenoid valve M2 is stopped by pressing the close button.
7. after the system is started, the first butterfly valve LV1 is opened, the second ball valve OV1 is opened, the second butterfly valve OV2 is opened, the pneumatic valve OV3 is opened, the fourth ball valve OV5 is closed, the first ball valve LV2 is closed, a screw pump forward rotation button is pressed, the screw pump MA1 is started in a forward rotation mode, a closing button is pressed, and the screw pump MA1 stops running.
in the step 7, when the screw pump MA1 rotates forwards, the frequency of the power supply for driving the screw pump MA1 can be regulated and controlled through the frequency converter, so that the rotating speed of the screw pump MA1 can be regulated.
8. After the system is started, a first butterfly valve LV1 is opened, a first ball valve LV2 is closed, a second ball valve OV1 is opened, a second butterfly valve OV2 is opened, a fourth ball valve OV5 is closed, a pneumatic valve OV3 is opened, and an electromagnetic proportional valve OV4 is opened. When a screw pump reverse button is pressed, the screw pump MA1 starts to reversely rotate, and when a closing button is pressed, the screw pump MA1 stops operating.
In the step 8, when the screw pump MA1 rotates reversely, the frequency of the power supply for driving the screw pump MA1 can be regulated and controlled by the frequency converter, so that the rotating speed of the screw pump MA1 can be regulated.
9. after the system is started, a first butterfly valve LV1 is opened, a third ball valve LV3 is opened, a first electromagnetic valve M2 is opened, a fourth ball valve OV5 is opened, a second ball valve OV1 is closed, a second butterfly valve OV2 is opened, and an air-operated valve OV3 is opened; pressing a jet pump starting button, starting the jet pump MA4, and opening the second electromagnetic valve M3 after five seconds; the jet pump off button is pressed and the jet pump MA4 is turned off.
In the step 9, the second electromagnetic valve M3 is controlled by a delay relay and a PLC controller, the PLC controller may set a delay action time of the delay relay, and after the time is up, the delay relay acts and the electromagnetic valve M3 is opened.
the pump system teaching practical training equipment can be used for multiple teaching and checking such as screw pump cold-state driving, motor reversal fault troubleshooting, injection pump cold-state driving, injection pump air binding solution, aeration oxygen demand calculation, metering pump adjustment, valve and pump maintenance, electrical connection, software configuration, safe electrification and the like, and the specific operation comprises the following steps:
1) And the screw pump is started in a cold state:
Turning on a power supply, wherein all actions are closed, firstly turning on a manual or automatic program change-over switch S3 and switching to a manual program (which needs to be met), then turning on a manual start button S1, P1, a contactor Q2 and starting a system, and stopping all actions when the manual or automatic program change-over switch S3 is turned off; after the system is started, a first butterfly valve LV1 is opened, a second ball valve OV1 is opened, a second butterfly valve OV2 is opened, an air-operated valve OV3 is opened, a fourth ball valve OV5 is closed, a first ball valve LV2 is closed, a screw pump forward rotation button is pressed, a screw pump MA1 forward rotation is started (variable frequency speed regulation), and cold-state start is completed.
2) Checking the reverse rotation fault of the motor:
after the system is started, a first butterfly valve LV1 is opened, a first ball valve LV2 is closed, a second ball valve OV1 is opened, a second butterfly valve OV2 is opened, a fourth ball valve OV5 is closed, a pneumatic valve OV3 is opened, and an electromagnetic proportional valve OV4 is opened; when the screw pump reverse button is pressed, the screw pump MA1 is reversely rotated and started, and the player determines whether the actual turning direction of the screw pump is the same as the predetermined turning direction based on the pressure change displayed on the touch panel 3, the flow rate change of the flow meter 17, and the turning direction of the screw pump MA1 fan.
3) and cold-state starting of the jet pump:
After the system is started, a first butterfly valve LV1 is opened, a third ball valve LV3 is opened, a first electromagnetic valve M2 is opened, a fourth ball valve OV5 is opened, a second ball valve OV1 is closed, a second butterfly valve OV2 is opened, and an air-operated valve OV3 is opened. And (3) pressing a jet pump starting button to start the jet pump MA4, opening the second electromagnetic valve M3 five seconds later (the opening time is adjustable), and finishing the cold-state driving of the centrifugal pump.
4) And the centrifugal pump air-bound solution:
After the system is started, the first butterfly valve LV1 is opened, the third ball valve LV3 is opened, and the first solenoid valve M2 is opened (this step is called pump filling).
5) And (3) calculating aeration oxygen demand:
The COD content of the water entering the tank 1 is first measured, by way of example: assuming that the COD of the feed water is 200mg/l, the COD of the effluent water is required to be 50mg/l, and 0.87kg of oxygen is needed to remove 1kg of COD, and how much oxygen is needed to treat 1 side of water.
(influent COD-effluent COD) 1000L 0.87/1000000kg =0.1305kg oxygen.
6) And adjusting a metering pump:
The metering pump is provided with 3 buttons, namely a switch button, an increment button and a decrement button, the increment button is pressed to increase the dosage, and the decrement button is pressed to decrease the dosage.
7) Maintenance of valves and pumps:
Disassembling the valve, replacing the packing seal, disassembling the pump, replacing the flange seal, the mechanical shaft seal, the stator or the rotor, the O-shaped ring and the like.
8) Electrical wiring, software configuration and safe electrification:
replacing the sensor wire according to the circuit diagram; carrying out configuration programming on the frequency converter, the PLC and the touch screen by using programming software; the equipment is powered on step by step according to the technical specification, and illegal operations (such as touching an electric wire by hand, splashing water into an electric control cabinet and the like) which can cause personal injury are not performed.
It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims (10)
1. The utility model provides a real standard equipment of pump system teaching, is including pond (1) that is arranged in simulating the storage water in the water works, its characterized in that: a main pipeline forming a circulating water path is arranged below the water pool (1), an auxiliary pipeline is communicated with the main pipeline, a water treatment device simulating water treatment is arranged on one side of the water pool (1), and the main pipeline, the auxiliary pipeline and the water treatment device are controlled by an automatic control system to operate.
2. the pump system teaching and training device of claim 1, wherein: the water treatment device comprises an electromagnetic air pump (MA 3) arranged outside the water pool (1), the output end of the electromagnetic air pump (MA 3) is communicated with an air delivery pipe, and the other end of the air delivery pipe extends into the position below the liquid level in the water pool (1).
3. The pump system teaching and training device of claim 2, wherein: the water tank (6) is arranged outside the water tank (1), the metering pump (MA 5) is fixedly mounted on the water tank (6), the water inlet end of the metering pump (MA 5) is communicated with the water tank (6), and the water outlet end of the metering pump (MA 5) is communicated to the water tank (6) through a water conveying pipe.
4. the pump system teaching and training device of claim 3, wherein: the main pipeline comprises a main pipeline (26), the water inlet end of the main pipeline (26) is installed at the bottom of the water pool (1) and communicated with the water pool (1), the water outlet end of the main pipeline (26) is branched into two water outlet branch circuits, one of the water outlet branch circuits is installed at the bottom of the water pool (1) and communicated with the water pool (1), and the other water outlet branch circuit is installed above the water pool (1) and communicated with the water pool (1).
5. The pump system teaching and training device of claim 4, wherein: the main pipeline (26) is sequentially provided with a first butterfly valve (LV 1), a Y-shaped filter (8), a screw pump (MA 1), a second ball valve (OV 1), a second butterfly valve (OV 2), a flow meter (17), a pneumatic valve (OV 3) and an electromagnetic proportional valve (OV 4) in series according to the water flow direction.
6. The pump system teaching and training device of claim 5, wherein: the pneumatic valve (OV 3) is arranged on the main pipeline (26) in series and is positioned on one side of the water outlet of the flowmeter (17), and the electromagnetic proportional valve (OV 4) is arranged on the main pipeline (26) in series and is positioned on the water outlet branch at the bottom of the water pool (1).
7. the pump system teaching and training device of claim 6, wherein: still communicate on main line (26) and have reposition of redundant personnel pressure release return circuit, reposition of redundant personnel pressure release return circuit includes relief valve (11) and first ball valve (LV 2), and the main line (26) of the end of intaking and the play water end of relief valve (11) are connected through the connecting pipe respectively on the end of intaking and the play water end department of screw pump (MA 1).
8. The pump system teaching and training device of claim 7, wherein: and the main pipeline (26) and the shunting pressure relief loop are respectively provided with a first pressure sensor (10) and a second pressure sensor (13) for monitoring the water pressure in the pipeline.
9. the pump system teaching and training device of claim 8, wherein: the auxiliary pipeline comprises an auxiliary pipeline (27), a third ball valve (LV 3), a first electromagnetic valve (M2), a jet pump (MA 4), a second electromagnetic valve (M3) and a fourth ball valve (OV 5) are arranged on the auxiliary pipeline (27) in series on one side along the water flow direction, the water inlet end of the auxiliary pipeline (27) is communicated with one side, close to the water outlet end of the Y-shaped filter (8), of the main pipeline (26), and the water outlet end of the auxiliary pipeline (27) is communicated with one side, close to the water inlet end of the second butterfly valve (OV 2), of the main pipeline (26).
10. The pump system teaching and training device of claim 9, wherein: the automatic control system comprises a PLC (programmable logic controller), and the signal output end of the PLC is respectively connected with an electromagnetic air pump (MA 3), a metering pump (MA 5), a screw pump (MA 1) and a pneumatic valve (OV 3); an electromagnetic proportional valve (OV 4); the control ends of the first electromagnetic valve (M2), the injection pump (MA 4) and the second electromagnetic valve (M3) are electrically connected, and the control input end of the PLC is connected with the touch screen (3).
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| CN201911019450.4A CN110570717A (en) | 2019-10-24 | 2019-10-24 | Real standard equipment of pump system teaching |
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| CN210667283U (en) * | 2019-10-24 | 2020-06-02 | 王湛 | Real standard equipment of pump system teaching |
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| CN201359806Y (en) * | 2008-09-22 | 2009-12-09 | 张宏丽 | Fluid transfer technology practical training device |
| CN104599581A (en) * | 2015-02-05 | 2015-05-06 | 浙江水利水电学院 | Multifunctional pump principle teaching demonstration device |
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