Linkage control system for delivery and loading of fly ash bulk warehouse

Abstract

The invention discloses a linkage control system for warehouse-out and loading of a coal ash bulk warehouse. The bulk warehouse comprises a bulk warehouse ash warehouse, a bulk warehouse discharging hopper and a bulk machine. The linkage control system comprises a local signal monitoring system, a local program starting system and an automatic control linkage system; the on-site signal monitoring system comprises a vehicle parking in-place monitoring system, a bulk machine in-place monitoring system and a vehicle ash can full-filling monitoring system. The vehicle parking in-place monitoring system is used for monitoring whether the ash transporting vehicle is parked in place or not; the bulk machine in-place monitoring system is used for monitoring whether the bulk machine is located at a designated position when the bulk machine descends or ascends; the vehicle ash can fullness monitoring system is used for monitoring the material level of an ash can of an ash transporting vehicle; the local program starting system comprises a local control cabinet; the local control cabinet sends a bulk warehouse fly ash loading sequential control starting signal or a bulk warehouse fly ash loading sequential control stopping signal to the automatic control linkage system; after the automatic control linkage system receives the signal, control logic is triggered, and linkage control is achieved.

Description

Technical Field

[0001] The invention relates to the field of linkage control systems, in particular to a linkage control system for unloading and loading fly ash bulk storage. Background Art

[0002] In order to ensure the safe and environmentally friendly disposal of fly ash, the thermal power company has built a fly ash bulk warehouse for the high-calcium fly ash and bottom slag produced by the boiler, and equipped it with a corresponding bulk warehouse loading system to realize the transportation of fly ash by car. The control of all equipment and its measuring points in the bulk warehouse loading system are connected to the DCS control system in the main control room. The bulk warehouse fly ash loading process is all realized by the operating personnel remotely operating the local equipment on the computer screen in the centralized control room. During the process of loading and transporting fly ash from the bulk warehouse, the truck driver parks the ash transport vehicle at the designated location under the bulk warehouse, notifies the operating personnel in the centralized control room by phone, and then the operating personnel operate each equipment in the bulk warehouse one by one until the ash transport vehicle is full, and then the truck driver notifies the operating personnel in the centralized control room by phone to stop the various sets of loading equipment in the bulk warehouse.

[0003] The following problems exist in the whole process of loading fly ash from bulk warehouse: 1. The time for loading fly ash by truck into the factory is not fixed. If the operator has other urgent production tasks when loading into the factory, the loading operation can only be carried out after the operator completes other tasks, which reduces the overall fly ash discharge efficiency of the company's fly ash warehouse, affects the fly ash revenue, and increases the safety risk of fly ash disposal in the boiler of the power generation unit; 2. During the entire process of loading fly ash into the bulk warehouse, operators open and close dozens of electric valves and start and stop multiple air compressors, fans, dust collection fans and other electrical equipment. The operation is cumbersome and inefficient, and it is very easy to cause equipment damage due to misoperation; 3. The bulk storage is too far away from the centralized control room, making communication extremely inconvenient. It is often the case that the ash transport vehicles start discharging ash before they are parked in place due to poor communication, or the truck driver notifies the operator to stop the loading operation too late when the truck is about to be full, causing fly ash overflow and ash leakage from the ash storage, which increases the cleaning cost and damages the environment.

[0004] In order to solve the deficiencies in the existing technology, it is necessary to introduce a new control scheme to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention discloses a linkage control system for the unloading and loading of fly ash in bulk warehouse, which provides guarantee for linkage control through signal monitoring device, and adopts linkage control of local buttons and DCS control system to realize the start and stop of unloading and loading of fly ash in bulk warehouse.

[0006] The present invention discloses a linkage control system for unloading and loading fly ash from a bulk warehouse, wherein the bulk warehouse comprises a bulk warehouse ash warehouse, a bulk warehouse lower hopper and a bulk loader; the bulk warehouse lower hopper is arranged below the bulk warehouse ash warehouse, and the bulk loader is located below the bulk warehouse lower hopper; The linkage control system includes a local signal monitoring system, a local program starting system and an automatic control linkage system; The on-site signal monitoring system includes a vehicle parking monitoring system, a bulk loader in-place monitoring system, and a vehicle ash tank fullness monitoring system; the vehicle parking monitoring system is located below the bulk loader, and is used to monitor whether the ash transport vehicle entering the bulk warehouse is parked in place, and after parking in place, the vehicle in-place signal is sent to the automatic control linkage system; the bulk machine in-place monitoring system is used to monitor whether the bulk machine is in a specified position when descending or ascending, and after reaching the specified position, the bulk machine rising in place signal or the bulk machine descending in place signal is sent to the automatic control linkage system; the vehicle ash tank fullness monitoring system is used to monitor the material level of the ash tank of the ash transport vehicle, and send the material level signal to the automatic control linkage system; The local program start system includes a local control cabinet; the local control cabinet sends a bulk warehouse fly ash loading sequential control start signal or a bulk warehouse fly ash loading sequential control stop signal to the automatic control linkage system; After receiving the corresponding signal, the automatic control linkage system triggers the corresponding control logic to realize the sequential control start and the sequential control stop of the fly ash loading in the bulk depot.

[0007] A further improvement of the present invention is that the vehicle parking monitoring system includes four groups of photoelectric sensors, a rear slide rail and a side slide rail, two groups of photoelectric sensors are slidably arranged on the side slide rails, and the other two groups of photoelectric sensors are slidably arranged on the rear slide rails; the two groups of photoelectric sensors on the side slide rails are used to monitor whether the ash transport vehicle is parked in place in the front and rear directions, and the two groups of photoelectric sensors on the rear slide rails are used to monitor whether the ash transport vehicle is parked in place in the left and right directions; When the four groups of photoelectric sensors are all blocked by the ash transport vehicle, the ash transport vehicle is parked in place, and the four groups of photoelectric sensors of the vehicle parking position monitoring system respectively send corresponding vehicle arrival signals to the automatic control linkage system.

[0008] A further improvement of the present invention is that the bulk loader in-place monitoring system comprises a bulk loader monitoring slide rail, an upper limit switch, a lower limit switch, an upper limiter and a lower limiter; the upper limit switch and the lower limit switch are arranged on the bulk loader monitoring slide rail, and the upper limiter and the lower limiter are arranged on the bulk loader, corresponding to the upper limit switch and the lower limit switch respectively; When the upper limit switch is engaged with the upper limit device, the bulk machine rises to the high position, and the upper proximity switch sends a signal to the automatic control linkage system that the bulk machine has risen to the position; when the lower limit switch is engaged with the lower limit device, the bulk machine descends into the ash tank of the ash transport vehicle, and the lower proximity switch sends a signal to the automatic control linkage system that the bulk machine has descended to the position.

[0009] A further improvement of the present invention is that the vehicle ash tank filling monitoring system includes three groups of material level switch sensors; the three groups of material level switch sensors are arranged at the ash outlet of the bulk loader, for monitoring the material level of fly ash in the ash tank of the ash transport vehicle, and sending the corresponding material level signal to the automatic control linkage system.

[0010] A further improvement of the present invention is that the local program start system includes a local control cabinet, and the local control cabinet includes a local program-controlled start button and a local program-controlled stop button; when the local program-controlled start button is pressed, the automatic control linkage system receives a bulk warehouse fly ash loading sequence control start signal; when the local program-controlled stop button is pressed, the automatic control linkage system receives a bulk warehouse fly ash loading sequence control stop signal.

[0011] A further improvement of the present invention is that the bulk warehouse also includes a bulk warehouse air compressor, a bulk warehouse cold dryer, a bulk warehouse top dust collecting valve, a bulk machine dust collecting valve, a loading dust collecting valve, a bulk warehouse dust collecting fan, a bulk warehouse gasification valve, a bulk warehouse gasification fan, and a bulk warehouse ash discharge valve; the bulk warehouse air compressor, the bulk warehouse cold dryer and the bulk warehouse dust collecting fan are connected in sequence through pipelines, the bulk warehouse top dust collecting valve, the bulk machine dust collecting valve, and the loading dust collecting valve are all connected to the bulk warehouse dust collecting fan; the gasification valve is connected to the bulk warehouse gasification fan; the bulk warehouse ash discharge valve is arranged on the bulk warehouse lower hopper; The automatic control linkage system includes a start control panel and a first Step module, wherein the first Step module is connected between the start control panel and the bulk warehouse, and is used to control the program-controlled start of the bulk warehouse after receiving a start signal sent by the start control panel; The first Step module includes a first Step chip, and the first Step chip includes multiple terminal groups, and each terminal group sequentially completes the following program control process: Step S11: Bulk loader descending instruction; Step S12: Start the bulk storage cold dryer; Step S13: Start the bulk storage air compressor; Step S14: start the dust collecting valve on the top of the bulk storage; Step S15: Start the bulk storage dust collecting fan; Step S16: Open the bulk storage gasification valve; Step S17: Start the bulk storage gasification fan; Step S18: Open the bulk loader dust collecting valve and the loading dust collecting valve; Step S19: Open the ash discharge valve of the bulk storage.

[0012] A further improvement of the present invention is that in the first Step chip, each terminal group includes an input terminal and an output terminal, the output terminal sends instructions for controlling the bulk library to complete corresponding programming, and the input terminal receives a signal that the bulk library completes the corresponding programming instruction. The input terminal of the previous terminal group is connected to the output terminal of the next terminal group, and is used to convey to the next terminal group after the programming instruction corresponding to the current terminal group is completed, so as to carry out the programming process.

[0013] A further improvement of the present invention is that the first Step module further includes: a first AND gate chip, a first delay chip, a second delay chip, a third delay chip, a second AND gate chip, a second OR gate chip, and a third OR gate chip; The start end of the first Step chip is connected to the output end of the first AND gate chip, the first input end of the first AND gate chip receives the bulk warehouse fly ash loading sequential control start signal after the delay of the first delay chip, and the second input end of the first AND gate chip receives the vehicle arrival signal; The input terminals of the first terminal group in the first Step chip receive the signal of the program-controlled instruction of step S11; the input terminals of the second terminal group in the first Step chip are connected to the output of the second delay chip; the input terminals of the third terminal group in the first Step chip are connected to the output of the third delay chip; the input terminals of the fourth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S14; the input terminals of the fifth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S15; the input terminals of the sixth terminal group in the first Step chip are connected to the second AND gate chip; the input terminals of the seventh terminal group in the first Step chip are connected to the output of the second OR gate chip; the input terminals of the eighth terminal group in the first Step chip are connected to the output of the third OR gate chip; the input terminals of the ninth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S19; The input end of the second delay chip is used to receive the signal of the bulk warehouse completing the step S12 program-controlled instruction; the input end of the third delay chip is used to receive the signal of the bulk warehouse completing the step S13 program-controlled instruction; the input end of the second AND gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk warehouse gasification valve; the input end of the second OR gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk warehouse gasification fan; the input end of the third OR gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk loader dust collection valve and the loading dust collection valve.

[0014] A further improvement of the present invention is that the automatic control linkage system further comprises a stop control panel and a second Step module, wherein the second Step module comprises a second Step chip, and the second Step chip comprises a plurality of terminal groups, and each terminal group sequentially completes the following program control process: Step S21: closing the ash discharge valve of the bulk storage; Step S22: closing the bulk loader dust collecting valve and the loading dust collecting valve; Step S23: stop the bulk storage gasification fan; Step S24: closing the bulk storage gasification valve; Step S25: Stop the dust collecting fan of the bulk storage; Step S26: closing the dust collecting valve on the top of the bulk storage; Step S27: Bulk loader rising instruction.

[0015] A further improvement of the present invention is that in the second Step chip, each terminal group includes an input terminal and an output terminal, the output terminal sends instructions for controlling the bulk library to complete corresponding programming to the bulk library, the input terminal receives the signal that the bulk library completes the corresponding programming instructions, and the input terminal of the previous terminal group is connected to the output terminal of the next terminal group, which is used to convey to the next terminal group after the programming instructions corresponding to the current terminal group are completed, so as to carry out the programming process.

[0016] Beneficial effects of the present invention: After the linkage control system of the present invention is put into operation, the efficiency of loading and transporting fly ash from bulk storage is greatly improved, manual operations are reduced, the fly ash revenue is increased, and the blockage of steel plate ash storage pipelines or damage to equipment due to overpressure is avoided to the greatest extent. The phenomenon of fly ash overflow during loading and ash leakage from ash storage is effectively reduced, the fly ash disposal capacity of boilers is effectively improved, and reliable emergency protection is provided for boiler equipment.

[0017] In the process of loading fly ash in bulk warehouse, the present invention innovatively adopts the linkage control mode of local button and DCS control system, so that the start and stop of sequence program can be controlled locally and the start and stop of sequence program can be realized through DCS control system.

[0018] The present invention adds various signal monitoring devices to the bulk warehouse to provide linkage protection for various equipment involved in the fly ash loading process of the bulk warehouse, thereby improving the equipment operation efficiency and realizing reliable interlocking protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a vehicle parking monitoring system of the present invention; Figure 2 Schematic diagram of the bulk loader in-place monitoring system of the present invention Figure 1 ; Figure 3 Schematic diagram of the bulk loader in-place monitoring system of the present invention Figure 2 ; Figure 4 A schematic diagram of a start control panel for realizing sequential start of fly ash loading in bulk storage according to the present invention; Figure 5 This is a schematic diagram of the principle structure of the first Step module for realizing the sequential control start of fly ash loading in bulk depot according to the present invention; Figure 6 It is a schematic diagram of a stop control panel for realizing the sequential stop of fly ash loading in bulk depot according to the present invention; Figure 7 It is a schematic diagram of the principle structure of the second Step module for realizing the sequential control stop of fly ash loading in bulk depot according to the present invention.

[0020] Description of Reference Numerals 1. Ash transport vehicle, 2. Photoelectric sensor, 3. Side slide rail, 4. Rear slide rail, 5. Bulk loader, 6. Bulk loader monitoring slide rail, 7. Upper limit switch, 8. Lower limit switch, 9. Bulk ash bin, 10. Bulk hopper, 11. Material level switch sensor, 12. First Step chip, 13. First delay chip, 14. First AND gate chip, 15. First OR gate chip, 16. Second delay chip, 17. Third delay chip, 18. Second AND gate chip, 19. Third AND gate chip, 20. Second OR gate chip, 21. Fourth AND gate chip, 22. Third OR gate chip, 23. Second Step chip, 24. Fourth OR gate chip, 25. Fifth OR gate chip, 26. Fourth delay chip, 27. Sixth OR gate chip, 28. Sixth AND gate chip, 29. Seventh AND gate chip, 30. Eighth AND gate chip, 31. Ninth AND gate chip. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] The invention discloses a linkage control system for unloading and loading of fly ash in bulk warehouse, which provides guarantee for linkage control through a signal monitoring device, and realizes unloading and loading start and stop of fly ash in bulk warehouse by adopting a linkage control method of a local button and a DCS control system.

[0023] The present invention provides a linkage control system for fly ash bulk warehouse unloading and loading, the bulk warehouse comprises a bulk warehouse air compressor, a bulk warehouse cold dryer, a dust collecting valve, a bulk warehouse dust collecting fan, a bulk warehouse gasification valve, a bulk warehouse gasification fan, a bulk loader 5, a bulk warehouse ash warehouse, and a bulk warehouse ash discharge valve; a bulk warehouse lower hopper is arranged at the bottom of the bulk warehouse ash warehouse, and the bulk loader 5 is arranged at the lower part of the bulk warehouse lower hopper, so that the fly ash in the bulk warehouse lower hopper enters the ash transport vehicle 1 below through the bulk loader 5. The bulk warehouse ash discharge valve is arranged on the bulk warehouse lower hopper.

[0024] The bulk warehouse air compressor, bulk warehouse cold dryer and bulk warehouse dust collecting fan are connected in sequence through pipelines. The bulk warehouse air compressor generates high-pressure compressed air, which is cooled and dried by the bulk warehouse cold dryer and then supplied to the bulk warehouse dust collecting fan for use; the bulk warehouse dust collecting fan is set at the top of the bulk warehouse ash bin to reduce dust. The dust collecting valve is connected to the bulk warehouse dust collecting fan through a pipeline. In this embodiment, there are four dust collecting valves, namely, the bulk machine dust collecting valve, the first loading dust collecting valve, the second loading dust collecting valve, and the bulk warehouse top dust collecting valve.

[0025] The bulk storage gasification fan is connected to the bulk storage gasification valve through a pipeline, and the gasification valve is connected to the ash hopper. In the present application, two bulk storage gasification valves are provided, namely the upper zone gasification valve and the lower zone gasification valve. The upper zone gasification valve is connected to the bulk storage ash bin, and the lower zone gasification valve is connected to the bulk storage lower hopper to improve the activation effect.

[0026] The linkage control system of the present invention comprises a local signal monitoring system, a local program starting system and an automatic control linkage system.

[0027] The local signal monitoring system includes the vehicle parking monitoring system, the bulk loader arrival monitoring system, and the vehicle ash tank fullness monitoring system. The local signal monitoring system is set up in the bulk warehouse to monitor the location of the bulk machine, the location of the ash transport vehicle, and whether the ash tank of the ash transport vehicle is full.

[0028] The vehicle parking monitoring system is located below the bulk loader 5 and is used to monitor whether the ash transport vehicle 1 entering the bulk storage has parked in place, and after parking in place, sends a vehicle arrival signal to the automatic control linkage system.

[0029] The vehicle parking monitoring system includes four groups of photoelectric sensors 2, rear slide rails 4 and side slide rails 3, which are used to monitor whether the ash transport vehicle 1 (empty) enters the bulk storage and stops under the bulk storage hopper. Preferably, the photoelectric sensor 2 is an infrared mirror reflection photoelectric sensor. Two groups of photoelectric sensors 2 are slidably set on the side slide rails 3, and the other two groups of photoelectric sensors 2 are movably slidably set on the rear slide rails 4, such as Figure 1As shown. The two groups of photoelectric sensors 2 on the side rails 3 are used to monitor whether the ash transport vehicle 1 is parked in place in the front and rear directions. The spacing between them is set to the length of the ash transport vehicle 1. When the two photoelectric sensors 2 are all blocked by the side of the ash transport vehicle 1, the trigger signal is parked in place in the front and rear directions. The spacing between them can be adjusted through the side rails 3 to match ash transport vehicles 1 with different body lengths. Similarly, the two groups of photoelectric sensors 2 on the rear rails 4 are used to monitor whether the ash transport vehicle 1 is parked in place in the front and rear directions. The spacing between them is set to the width of the ash transport vehicle 1. When the two groups of photoelectric sensors 2 are all blocked by the rear of the ash transport vehicle 1, the trigger signal is parked in place in the left and right directions. The spacing between them can be adjusted through the rear rails 4 to match ash transport vehicles 1 with different body widths. Only when the ash transport vehicle 1 enters the bulk warehouse workshop and stops just under the lower hopper of the bulk warehouse, the four groups of photoelectric sensors 2 will be blocked by the ash transport vehicle 1 at the same time. The four groups of photoelectric sensors 2 of the ash transport vehicle 1 parking position monitoring system will send vehicle arrival signals to the automatic control linkage system respectively as permission conditions for the bulk warehouse fly ash loading sequence control start procedure, thereby ensuring that the ash tank of the ash transport vehicle 1 is facing the lower hopper of the bulk warehouse before the bulk warehouse fly ash loading sequence control start procedure.

[0030] The bulk loader in place monitoring system is a system used to monitor whether the bulk loader is in place when it rises and falls. The bulk loader 5 is driven to rise and fall by a driving motor. Figure 2 , Figure 3 When receiving the descending instruction, the driving motor drives the bulk loader 5 to descend until the ash outlet of the bulk loader descends into the ash tank outlet of the ash transport vehicle 1 .

[0031] The bulk loader in-position monitoring system includes a bulk loader monitoring slide rail 6, an upper limit switch 7, a lower limit switch 8 and two limit switches. The upper limit switch 7 and the lower limit switch 8 are both arranged on the bulk loader monitoring slide rail 6, and the height can be adjusted through the bulk loader monitoring slide rail 6 to ensure that the bulk loader ash outlet is lowered into the ash tank opening of the ash transport vehicle 1 or the bulk loader 5 is separated from the ash tank of the ash transport vehicle 1. The upper limit switch 7 and the lower limit switch 8 correspond to the position where the bulk loader 5 rises to the position and the position where the bulk loader 5 falls to the position, respectively. Both limit switches are arranged on the bulk loader 5, corresponding to the upper limit switch 7 and the lower limit switch 8, respectively. When the bulk loader 5 rises or falls to the position, the upper limit switch 7 or the lower limit switch 8 engages with the corresponding limit switch, and then sends the corresponding bulk loader rise to position signal or bulk loader fall to position signal to the automatic control linkage system (DCS control system) through the signal cable.

[0032] The vehicle ash tank filling monitoring system is used to monitor the material level of the ash tank of the ash transport vehicle 1. The vehicle ash tank filling monitoring system includes three sets of material level switch sensors 11; the three sets of material level switch sensors 11 are arranged at the ash outlet of the bulk loader 5, and are used to monitor the material level of fly ash in the ash tank of the ash transport vehicle 1, and send the material level signal to the automatic control linkage system (DCS control system).

[0033] When the material level switch sensor 11 detects that the ash tank of the ash transport vehicle 1 is full, it sends a signal (two out of three) to the DCS control system as a trigger condition for the bulk warehouse fly ash loading sequential control stop program, thereby ensuring that the ash transport vehicle 1 stops loading ash in time after the ash tank of the ash transport vehicle 1 is full.

[0034] The local program start system includes a local control cabinet; the local control cabinet is set in the bulk warehouse, and the local control cabinet is connected to the automatic control linkage system. The local control cabinet has a local program start button, a local program stop button and a sequence control status indicator. The local control cabinet sends a bulk warehouse fly ash loading sequence control start signal or a bulk warehouse fly ash loading sequence control stop signal to the automatic control linkage system.

[0035] The function is implemented as follows: (1) The truck driver presses the local program-controlled start button on site → the relay is energized → the DI terminal of the DCS board is closed → (signal cable) → the DCS control system receives the fly ash loading sequence control start signal from the bulk warehouse; (2) The DCS control system receives the signal that the fly ash loading sequence control in the bulk warehouse has been started → (signal cable) → the sequence control status indicator light is on; (3) The truck driver presses the local program-controlled stop button → the relay is energized → the DI terminal of the DCS board is closed → (signal cable) → the DCS control system receives the stop signal of fly ash loading in the bulk warehouse; (4) The DCS control system receives the stop signal of fly ash loading from the bulk warehouse → (signal cable) → the control status indicator light goes out.

[0036] The automatic control linkage system relies on the DCS control system to realize the bulk storage fly ash loading and stopping functions, which are respectively realized by the first Step module and the second Step module. The working logic of the above two working processes is explained below.

[0037] 1. Start of fly ash loading sequence control in bulk warehouse The automatic control linkage system includes a start control panel and a first Step module. The sequential control start of fly ash loading in the bulk depot is realized through the start control panel, the first Step module and the bulk depot. The first Step module is connected between the start control panel and the bulk depot and is used to control the program-controlled start of the corresponding equipment in the bulk depot after receiving the start signal sent by the start control panel.

[0038] Figure 4 The schematic diagram of the start control panel state of the present invention for realizing the sequential start of fly ash loading in bulk depot; the sequential start of loading in bulk depot can adopt a one-key start mode, that is, Figure 4 Click "Sequential Control Start" to start the bulk storage fly ash loading start procedure. Alternatively, when the driver presses the local program control start button, the DCS control system receives the bulk storage fly ash loading sequential control start signal and also starts the bulk storage fly ash loading sequential control start procedure.

[0039] Figure 5 This is a schematic diagram of the principle structure of the first Step module of the present invention for realizing the sequential control of fly ash loading in bulk warehouse. Figure 5 As shown, the first Step module in this embodiment includes a first Step chip 12, and the first Step chip 12 includes multiple terminal groups, each terminal group includes an input terminal and an output terminal, and the output terminals of each terminal group sequentially complete the following program control process: Step S11: Bulk loader descending instruction; Step S12: Start the bulk storage cold dryer; Step S13: Start the bulk storage air compressor; Step S14: start the dust collecting valve on the top of the bulk storage; Step S15: Start the bulk storage dust collecting fan; Step S16: Open the upper zone gasification valve and the lower zone gasification valve; Step S17: Start the bulk storage gasification fan; Step S18: Open the bulk loader dust collecting valve, the first vehicle loading dust collecting valve, and the second vehicle loading dust collecting valve; Step S19: Open the ash discharge valve of the bulk storage.

[0040] Among them, the output terminal of the first Step chip 12 sends instructions for controlling each device in the bulk warehouse to complete the corresponding program control to the bulk warehouse, that is, the above-mentioned steps S11-S19, and the input terminal is used to receive the signal that each device in the bulk warehouse completes the corresponding program control instruction. The input terminal of the previous terminal group is connected to the output terminal of the next terminal group, which is used to convey the program control instruction corresponding to the current terminal group to the next terminal group after the completion of the program control instruction, that is, after the input terminal of the first terminal group receives the feedback signal, the output terminal of the second terminal group can send the program control instruction of step S12 to control the bulk warehouse, and so on, so as to carry out the program control process.

[0041] Further, such as Figure 5As shown, the first Step module also includes the following chips: a first delay chip 13, a first AND gate chip 14, a first OR gate chip 15, a second delay chip 16, a third delay chip 17, a second AND gate chip 18, a third AND gate chip 19, a second OR gate chip 20, a fourth AND gate chip 21, and a third OR gate chip 22.

[0042] The input end of the first delay chip 13 is used to receive the bulk warehouse fly ash loading sequential control start signal of the local program start system (i.e. Figure 5 The output end of the first delay chip 13 is connected to the first input end of the first AND gate chip 14. The delay time of the first delay chip 16 is 2s.

[0043] The first OR gate chip 15 has four input terminals, which respectively receive vehicle arrival signals (i.e. Figure 5 "Signal 1 for the ash transport vehicle to the side, signal 2 for the ash transport vehicle to the side, signal 3 for the ash transport vehicle to the side, signal 4 for the ash transport vehicle to the side" is used as the condition for starting the fly ash loading sequence control in the bulk depot; the output end of the first OR gate chip 15 is connected to the second input end of the first AND gate chip 14. The output end of the first AND gate chip 14 is connected to the start end of the first Step chip 12. When the start end of the first Step chip 12 receives the bulk depot fly ash loading sequence control starting signal sent by the local program starting system, and receives the vehicle arrival signal sent by the vehicle parking position monitoring system, the bulk depot fly ash loading sequence control starting program can be started.

[0044] The input terminals of the first terminal group in the first Step chip 12 are used to receive the signal of completing the program control instruction of step S11; the input terminals of the second terminal group in the first Step chip 12 are connected to the output end of the second delay chip 16; the input terminals of the third terminal group in the first Step chip 12 are connected to the output end of the third delay chip 17; the input terminals of the fourth terminal group in the first Step chip 12 are used to receive the signal of completing the program control instruction of step S14; the input terminals of the fifth terminal group in the first Step chip 12 are used to receive the signal of completing the program control instruction of step S15; the input terminals of the sixth terminal group in the first Step chip 12 are connected to the second AND chip 18; the input terminals of the seventh terminal group in the first Step chip 12 are connected to the output end of the second OR chip 20; the input terminals of the eighth terminal group in the first Step chip 12 are connected to the output end of the third OR chip 22; the input terminals of the ninth terminal group in the first Step chip 12 are used to receive the signal of completing the program control instruction of step S19; The input end of the second delay chip 16 is used to receive the signal of the program control instruction for completing step S12; the delay time of the second delay chip 16 is 60s. The input end of the third delay chip 17 is used to receive the signal of the program control instruction for completing step S13; the delay time of the third delay chip 17 is 300s. The two input ends of the second AND gate chip 18 are respectively used to receive the signals of the program control instruction for starting the upper zone gasification valve and the lower zone gasification valve, and the output end of the second AND gate chip 18 outputs the program control instruction signal for completing step S16.

[0045] The output end of the second OR gate chip 20 is used to output the signal of completing the program control instruction of step S17; in this embodiment, since there are two bulk warehouse gasification fans (#1 gasification fan and #2 gasification fan), and the frequency converter opening of the bulk warehouse gasification fan is greater than 20, it is considered that the bulk warehouse gasification fan starts processing, and the next step of sequential control can be carried out. Therefore, the two input ends of the second OR gate chip 20 are respectively connected to the output end of the third AND gate chip 19 and the output end of the fourth AND gate chip 21. The two input ends of the third AND gate chip 19 correspond to receiving the start-up of the #1 gasification fan and the opening feedback of its frequency converter; the two input ends of the fourth AND gate chip 21 correspond to receiving the start-up of the #2 gasification fan and the opening feedback of its frequency converter.

[0046] The input end of the third OR gate chip 22 is used to receive a signal for completing the program control instruction of step S18.

[0047] The implementation principle of the sequential control start of fly ash loading in the bulk warehouse is as follows: when the local program-controlled start button is pressed, the sequential control start signal of the fly ash loading in the bulk warehouse is issued, and when the four groups of signals, namely, the ash transport vehicle side parking position signal 1, the ash transport vehicle side parking position signal 2, the ash transport vehicle rear parking position signal 3, and the ash transport vehicle rear parking position signal 4, are issued at the same time, or when "Sequential Control Start" is clicked, the first Step module will automatically trigger the start command, which will correspondingly trigger the bulk loader descending command. After the command is issued and the FB1 "bulk loader descends into position" signal is fed back, the first Step chip 12 will automatically trigger the step2 command, and so on, until the FB9 bulk warehouse ash discharge valve open signal is fed back, the bulk warehouse fly ash loading sequential control start program completes the one-button start, and the bulk warehouse starts fly ash out of the warehouse and loading. (The principle of step is that after the step instruction is issued, the next instruction is issued after receiving the feedback signal of the corresponding step. For example, after manually clicking the sequential control start, the first Step module sends the step1 instruction signal. When the step module receives the FB1 feedback signal, it will send the step2 instruction signal, and so on to complete the first Step module sequential control sequence.) 2. Bulk storage fly ash loading sequence control stop The automatic control linkage system also includes a stop control panel and a second Step module. The sequential control stop of fly ash loading in the bulk depot is realized through the stop control panel, the second Step module and the bulk depot. The second Step module is connected between the stop control panel and the bulk depot and is used to control the program-controlled stop of the corresponding equipment in the bulk depot after receiving the stop signal sent by the stop control panel.

[0048] Figure 6 Schematic diagram of the stop control panel of the bulk storage fly ash loading sequential control stop of the present invention; the bulk storage fly ash loading stop sequential control can adopt a one-key start mode: Figure 6 Click "Sequential Stop" to start the bulk warehouse fly ash loading sequential stop program.

[0049] Figure 7 FIG. 2 is a schematic diagram of the principle structure of the second Step module of the present invention for realizing bulk storage loading. Figure 7 As shown, the second Step module in this embodiment includes a second Step chip 23, and the second Step chip 23 includes multiple terminal groups, each terminal group sequentially completes the bulk warehouse fly ash loading sequential control stop; The program control process of fly ash loading and stopping in bulk storage is as follows: Step S21: closing the ash discharge valve of the bulk storage; Step S22: close the bulk loader dust collecting valve, the first vehicle loading dust collecting valve, and the second vehicle loading dust collecting valve; Step S23: stop the bulk storage gasification fan; Step S24: closing the upper zone gasification valve and the lower zone gasification valve; Step S25: Stop the dust collecting fan of the bulk storage; Step S26: closing the dust collecting valve on the top of the bulk storage; Step S27: Bulk loader rising instruction.

[0050] Among them, the output terminal of the second Step chip 23 sends instructions for controlling each device in the bulk warehouse to complete the corresponding program control, that is, the above-mentioned steps S21-S27. The input terminal is used to receive the signal that each device in the bulk warehouse completes the corresponding program control instruction. The input terminal of the previous terminal group is connected to the output terminal of the next terminal group, which is used to transmit to the next terminal group after the program control instruction corresponding to the current terminal group is completed. That is, after the input terminal of the first terminal group receives the feedback signal, the output terminal of the second terminal group can send the program control instruction of step S22 to control the bulk warehouse, and so on, so as to carry out the program control process.

[0051] like Figure 7As shown, the second Step module also includes: a fourth OR gate chip 24 , a fifth OR gate chip 25 , a sixth OR gate chip 27 , a sixth AND gate chip 28 , a fourth delay chip 26 , and a seventh AND gate chip 29 .

[0052] The three input terminals of the fourth OR gate chip 24 receive the high material level signals (i.e. Figure 7 The output end of the fourth OR gate chip 24 is connected to the first input end of the fifth OR gate chip 25; The second input end of the fifth OR gate chip 25 receives the bulk warehouse material level low signal (two switch level meters are set in the bulk warehouse ash warehouse, which can send the bulk warehouse material level low signal). The third input end of the fifth OR gate chip 25 is connected to the output end of the fourth delay chip 26, and the input end of the fourth delay chip 26 receives the bulk warehouse fly ash loading sequential control stop signal sent by the local program startup system (i.e. Figure 7 The delay time of the fourth delay chip 26 is 2s, and the output end of the fifth or gate chip 25 is connected to the start end of the second Step chip 23. When the start end of the second Step chip 23 receives the bulk warehouse fly ash loading sequence stop signal (2S pulse) sent by the local program start system, or the bulk warehouse material level low signal, or the fly ash material level high signal of the ash transport vehicle (three out of two), or clicks the "sequence stop" on the stop control panel, the bulk warehouse fly ash loading sequence stop program can be started.

[0053] The input terminals of the first terminal group in the second Step chip 23 are used to receive the signal of the program control instruction for completing step S21; the input terminals of the second terminal group in the second Step chip 23 are connected to the output end of the sixth OR gate chip 27, and the three input ends of the sixth OR gate chip 27 are respectively used to receive the signal of the program control instruction for completing the closing of the installation dust collecting valve, the first vehicle loading dust collecting valve, and the second vehicle loading dust collecting valve; The input terminals of the third terminal group in the second Step chip 23 are used to receive the signal of the program control instruction to complete step S23. In this embodiment, there are two bulk warehouse gasification fans, namely #1 gasification fan and #2 gasification fan; therefore, the second Step module in this embodiment also includes the sixth AND gate chip 28, the eighth AND gate chip 30, and the ninth AND gate chip 31; the output end of the eighth AND gate chip 30 is used to receive the stop signal of the #1 gasification fan, and the output end of the ninth AND gate chip 31 is used to receive the stop signal of the #2 gasification fan. The signal output by the output end of the sixth AND gate chip 28 is used as the stop signal of the bulk warehouse gasification fan, that is, the signal to complete the program control instruction of step S23.

[0054] The input terminals of the fourth terminal group in the second Step chip 23 are connected to the output ends of the seventh AND gate chip 29, and the two input ends of the seventh AND gate chip 29 are respectively used to receive the signals of the program control instructions for closing the upper zone gasification valve and the lower zone gasification valve; the input terminals of the fifth terminal group in the second Step chip 23 are used to receive the signals of the program control instructions for completing step S25; the input terminals of the sixth terminal group in the second Step chip 23 are used to receive the signals of the program control instructions for completing step S26; the input terminals of the seventh terminal group in the second Step chip 23 are used to receive the signals of the program control instructions for completing step S27.

[0055] The implementation principle is: when the local program-controlled stop button is pressed, the bulk storage fly ash loading sequential control stop signal is issued (2s pulse), or the bulk storage low material level signal is issued, or the ash transport vehicle fly ash level high signal (three out of two) is issued, or after clicking "sequential control stop", the second Step module will automatically trigger the start command, which will correspondingly trigger the step1 "close the bulk storage ash outlet valve" command (the ash transport vehicle fly ash level high signal (three out of two) will also directly issue the "close the bulk storage ash outlet valve" command). When the step1 command is issued and the FB1 "bulk storage ash outlet valve is closed" signal is fed back, the second Step module will automatically trigger the step2 command, and so on, until the FB7 "bulk loader rises to position" signal is fed back, the bulk storage fly ash loading sequential control stop program completes the one-button start, and the bulk storage fly ash loading stops. (The principle of step is that after the step instruction is issued, the next instruction is issued after receiving the feedback signal of the corresponding step. For example, after manually clicking the sequential control stop, the second Step module sends the step1 instruction signal. When the second Step module receives the FB1 feedback signal, it will send the step2 instruction signal, and so on to complete the entire sequential control sequence.) Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A linkage control system for fly ash bulk storage outbound and loading, characterized in that: The bulk silo includes a bulk silo ash silo, a bulk silo lower hopper and a bulk loader; the bulk silo lower hopper is arranged below the bulk silo ash silo, and the bulk loader is located below the bulk silo lower hopper; The linkage control system includes a local signal monitoring system, a local program starting system and an automatic control linkage system; The on-site signal monitoring system includes a vehicle parking monitoring system, a bulk loader in-place monitoring system, and a vehicle ash tank fullness monitoring system; the vehicle parking monitoring system is located below the bulk loader, and is used to monitor whether the ash transport vehicle entering the bulk warehouse is parked in place, and after parking in place, the vehicle in-place signal is sent to the automatic control linkage system; the bulk machine in-place monitoring system is used to monitor whether the bulk machine is in a specified position when descending or ascending, and after reaching the specified position, the bulk machine rising in place signal or the bulk machine descending in place signal is sent to the automatic control linkage system; the vehicle ash tank fullness monitoring system is used to monitor the material level of the ash tank of the ash transport vehicle, and send the material level signal to the automatic control linkage system; The local program start system includes a local control cabinet; the local control cabinet sends a bulk warehouse fly ash loading sequential control start signal or a bulk warehouse fly ash loading sequential control stop signal to the automatic control linkage system; After receiving the corresponding signal, the automatic control linkage system triggers the corresponding control logic to realize the sequential control start and the sequential control stop of the fly ash loading in the bulk depot.

2. A linkage control system for unloading and loading of fly ash bulk storage according to claim 1, characterized in that: The vehicle parking monitoring system includes four groups of photoelectric sensors, rear slide rails and side slide rails. Two groups of photoelectric sensors are slidably arranged on the side slide rails, and the other two groups of photoelectric sensors are slidably arranged on the rear slide rails. The two groups of photoelectric sensors on the side slide rails are used to monitor whether the ash transport vehicle is parked in place in the front and rear directions, and the two groups of photoelectric sensors on the rear slide rails are used to monitor whether the ash transport vehicle is parked in place in the left and right directions. When the four groups of photoelectric sensors are all blocked by the ash transport vehicle, the ash transport vehicle is parked in place, and the four groups of photoelectric sensors of the vehicle parking position monitoring system respectively send corresponding vehicle arrival signals to the automatic control linkage system.

3. A linkage control system for unloading and loading of fly ash bulk storage according to claim 1, characterized in that: The bulk loader in-place monitoring system comprises a bulk loader monitoring slide rail, an upper limit switch, a lower limit switch, an upper limiter and a lower limiter; the upper limit switch and the lower limit switch are arranged on the bulk loader monitoring slide rail, and the upper limiter and the lower limiter are arranged on the bulk loader, corresponding to the upper limit switch and the lower limit switch respectively; When the upper limit switch is engaged with the upper limit device, the bulk machine rises to the high position, and the upper proximity switch sends a signal to the automatic control linkage system that the bulk machine has risen to the position; when the lower limit switch is engaged with the lower limit device, the bulk machine descends into the ash tank of the ash transport vehicle, and the lower proximity switch sends a signal to the automatic control linkage system that the bulk machine has descended to the position.

4. A linkage control system for unloading and loading of fly ash bulk storage according to claim 1, characterized in that: The vehicle ash tank filling monitoring system includes three sets of material level switch sensors; the three sets of material level switch sensors are arranged at the ash outlet of the bulk loader, and are used to monitor the material level of fly ash in the ash tank of the ash transport vehicle, and send corresponding material level signals to the automatic control linkage system.

5. A linkage control system for unloading and loading of fly ash bulk storage according to claim 1, characterized in that: The local program start system includes a local control cabinet, which includes a local program-controlled start button and a local program-controlled stop button; when the local program-controlled start button is pressed, the automatic control linkage system receives a bulk warehouse fly ash loading sequence control start signal; when the local program-controlled stop button is pressed, the automatic control linkage system receives a bulk warehouse fly ash loading sequence control stop signal.

6. A linkage control system for unloading and loading of fly ash bulk storage according to claim 1, characterized in that: The bulk warehouse also includes a bulk warehouse air compressor, a bulk warehouse cold dryer, a bulk warehouse top dust collecting valve, a bulk machine dust collecting valve, a loading dust collecting valve, a bulk warehouse dust collecting fan, a bulk warehouse gasification valve, a bulk warehouse gasification fan, and a bulk warehouse ash discharge valve; the bulk warehouse air compressor, the bulk warehouse cold dryer and the bulk warehouse dust collecting fan are connected in sequence through pipelines, the bulk warehouse top dust collecting valve, the bulk machine dust collecting valve, and the loading dust collecting valve are all connected to the bulk warehouse dust collecting fan; the gasification valve is connected to the bulk warehouse gasification fan; the bulk warehouse ash discharge valve is arranged on the bulk warehouse lower hopper; The automatic control linkage system includes a start control panel and a first Step module, wherein the first Step module is connected between the start control panel and the bulk warehouse, and is used to control the program-controlled start of the bulk warehouse after receiving a start signal sent by the start control panel; The first Step module includes a first Step chip, and the first Step chip includes multiple terminal groups, and each terminal group sequentially completes the following program control process: Step S11: Bulk loader descending instruction; Step S12: Start the bulk storage cold dryer; Step S13: Start the bulk storage air compressor; Step S14: start the dust collecting valve on the top of the bulk storage; Step S15: Start the bulk storage dust collecting fan; Step S16: Open the bulk storage gasification valve; Step S17: Start the bulk storage gasification fan; Step S18: Open the bulk loader dust collecting valve and the loading dust collecting valve; Step S19: Open the ash discharge valve of the bulk storage.

7. A linkage control system for unloading and loading of fly ash bulk storage according to claim 6, characterized in that: In the first Step chip, each terminal group includes an input terminal and an output terminal. The output terminal sends instructions for controlling the bulk library to complete corresponding programming, and the input terminal receives signals that the bulk library completes corresponding programming instructions. The input terminal of the previous terminal group is connected to the output terminal of the next terminal group, and is used to convey to the next terminal group after the programming instructions corresponding to the current terminal group are completed, so as to carry out the programming process.

8. A linkage control system for unloading and loading of fly ash bulk storage according to claim 7, characterized in that: The first Step module also includes: a first AND gate chip, a first delay chip, a second delay chip, a third delay chip, a second AND gate chip, a second OR gate chip, and a third OR gate chip; The start end of the first Step chip is connected to the output end of the first AND gate chip, the first input end of the first AND gate chip receives the bulk warehouse fly ash loading sequential control start signal after the delay of the first delay chip, and the second input end of the first AND gate chip receives the vehicle arrival signal; The input terminals of the first terminal group in the first Step chip receive the signal of the program-controlled instruction of step S11; the input terminals of the second terminal group in the first Step chip are connected to the output of the second delay chip; the input terminals of the third terminal group in the first Step chip are connected to the output of the third delay chip; the input terminals of the fourth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S14; the input terminals of the fifth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S15; the input terminals of the sixth terminal group in the first Step chip are connected to the second AND gate chip; the input terminals of the seventh terminal group in the first Step chip are connected to the output of the second OR gate chip; the input terminals of the eighth terminal group in the first Step chip are connected to the output of the third OR gate chip; the input terminals of the ninth terminal group in the first Step chip are used to receive the signal of the bulk library completing the program-controlled instruction of step S19; The input end of the second delay chip is used to receive the signal of the bulk warehouse completing the step S12 program-controlled instruction; the input end of the third delay chip is used to receive the signal of the bulk warehouse completing the step S13 program-controlled instruction; the input end of the second AND gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk warehouse gasification valve; the input end of the second OR gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk warehouse gasification fan; the input end of the third OR gate chip is used to receive the signal of the bulk warehouse completing the program-controlled instruction to open the bulk loader dust collection valve and the loading dust collection valve.

9. A linkage control system for unloading and loading of fly ash bulk storage according to claim 6, characterized in that: The automatic control linkage system further includes a stop control panel and a second Step module, wherein the second Step module includes a second Step chip, and the second Step chip includes multiple terminal groups, each terminal group sequentially completes the following program control process: Step S21: closing the ash discharge valve of the bulk storage; Step S22: closing the bulk loader dust collecting valve and the loading dust collecting valve; Step S23: stop the bulk storage gasification fan; Step S24: closing the bulk storage gasification valve; Step S25: Stop the dust collecting fan of the bulk storage; Step S26: closing the dust collecting valve on the top of the bulk storage; Step S27: Bulk loader rising instruction.

10. A linkage control system for unloading and loading of fly ash bulk storage according to claim 9, characterized in that: In the second Step chip, each terminal group includes an input terminal and an output terminal. The output terminal sends instructions to the bulk library for controlling the bulk library to complete corresponding programming instructions. The input terminal receives the signal that the bulk library completes the corresponding programming instructions. The input terminal of the previous terminal group is connected to the output terminal of the next terminal group, which is used to convey to the next terminal group after the programming instructions corresponding to the current terminal group are completed, so as to carry out the programming process.

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