CN113296424B - Ash discharge control system and method based on bus - Google Patents
Ash discharge control system and method based on bus Download PDFInfo
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- CN113296424B CN113296424B CN202011063086.4A CN202011063086A CN113296424B CN 113296424 B CN113296424 B CN 113296424B CN 202011063086 A CN202011063086 A CN 202011063086A CN 113296424 B CN113296424 B CN 113296424B
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Abstract
The application discloses grey control system and method based on bus, through adopting circuit technology and communication technology, the hardware control technique after the circuit connection of control circuit turns into the software control technique that relies on the same logical relation, develop standardized software and hardware product, make product manufacturing, wiring, school line and software and hardware debugging work all accomplish before dispatching from the factory, engineering drawing design, factory debugging, maintenance are all simpler, and greatly reduced motor control cable and supporting cable crane span structure, the quantity of protection tubular product, reduce the engineering volume of construction installation, thereby accelerate the engineering progress. Therefore, the problems that wiring is complex, the design of a wiring diagram is troublesome, the dotting debugging on an engineering field is easy to make mistakes, a long debugging period is required to be consumed, a large amount of cables, pipes, bridges, installation and laying manpower and a long engineering period are required to be consumed are solved.
Description
Technical Field
The application relates to an ash discharge control system, in particular to an ash discharge control system based on a bus. In addition, the application also relates to a bus-based ash discharge control method.
Background
The ash discharge control system is an important control system of a sintering plant and comprises various mechanical equipment, electrical equipment and the like. In the prior art, each electrical equipment component of the ash discharge control system is distributed at a plurality of site operation boxes and the positions of an electric control cabinet and the like in places such as a distribution room of a substation, signal handover is carried out through complicated cable connection, a large amount of cables with different specifications, especially control cables, are consumed, the cable bridge also occupies a large space of an internal and external factory buildings, a large amount of manpower, financial resources and material resources are consumed for installation and laying of batch cable bridges, cable protection pipes and cables, time and labor are wasted in cable wiring debugging, errors are easy to occur, and a longer engineering period is needed.
Disclosure of Invention
The technical problem that this application will be solved is for providing a dust discharging control system based on bus, and this dust discharging control system's structural design can greatly reduce control cable and supporting cable wire bridge, the quantity of protection coffin, reduces the engineering volume of construction installation, from showing reduction installation and working cost. In addition, another technical problem to be solved by the present application is to provide a bus-based ash discharge control method.
In order to solve the first technical problem, the present application provides a bus-based ash discharge control system, which includes:
the ash discharge valve controller comprises a signal output interface and a signal input interface;
the primary control loop is used for controlling the opening and closing of the ash discharge valve;
the secondary control loop is used for protecting the primary control loop;
the first automatic switch is arranged on the primary control loop and used for controlling the conduction and the interruption of the primary control loop;
the second automatic switch is arranged on the secondary control loop and used for controlling the conduction and the interruption of the secondary control loop;
the first intermediate relay is arranged on the secondary control loop and used for remotely controlling the ash discharge valve;
the alternating current contactor is arranged on the primary control loop and used for controlling a fan of the ash discharge valve control system;
the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
the second intermediate relay is used on the secondary control loop and used for remotely controlling the start and stop of the ash discharge valve in an automatic mode;
in the ash discharge valve controller, the signal input interface comprises a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
the first automatic switch is in signal series connection with the second automatic switch and is in signal connection with the first signal input interface;
the first intermediate relay is in signal connection with the second signal input interface;
the alternating current contactor is in signal connection with the third signal input interface;
the thermal relay is in signal connection with the fourth signal input interface;
and the second intermediate relay is in signal connection with the signal output interface so as to start and stop the ash discharge valve under the control of the ash discharge valve controller.
In one embodiment of the present invention, the substrate is,
the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
In one embodiment of the present invention, the substrate is,
the ash discharge valve controller executes signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, and the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
In one embodiment of the present invention, the substrate is,
the ash discharge control system comprises a plurality of ash discharge valve controllers and a main control system;
and the main control system is in signal connection with each ash discharge valve controller through a CAN bus.
In addition, in order to solve the above technical problem, the present application further provides a bus-based ash discharge control method, where the ash discharge control method is used in an ash discharge control system, the ash discharge control system includes an ash discharge valve controller, and the ash discharge control method includes:
the ash discharge valve controller comprises a signal output interface and a signal input interface;
the primary control loop is used for controlling the opening and closing of the ash discharge valve;
the secondary control loop is used for protecting the primary control loop;
the primary control loop is connected with the primary control circuit through a first automatic switch;
the secondary control loop is connected with the first automatic switch through a first switch;
the first intermediate relay arranged on the secondary control loop is used for remotely controlling the ash discharge valve;
the alternating current contactor is arranged on the primary control loop and is used for controlling a fan of the ash discharge valve control system;
the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
the ash discharge valve is remotely controlled to be started and stopped in an automatic mode through a second intermediate relay arranged on the secondary control loop;
in the ash discharge valve controller, the signal input interface comprises a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
the first automatic switch is in signal series connection with the second automatic switch and is in signal connection with the first signal input interface;
the first intermediate relay is in signal connection with the second signal input interface;
the alternating current contactor is in signal connection with the third signal input interface;
the thermal relay is in signal connection with the fourth signal input interface;
and the second intermediate relay is in signal connection with the signal output interface so as to start and stop the ash discharge valve under the control of the ash discharge valve controller.
In one embodiment of the present invention, the substrate is,
the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
In one embodiment of the present invention, the substrate is,
the ash discharge valve controller executes signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, and the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
In one embodiment of the method of the present invention,
the ash discharge control system comprises a plurality of ash discharge valve controllers and a main control system;
and the main control system is in signal connection with each ash discharge valve controller through a CAN bus.
The technical effects of the present application are described below:
in the prior art, each electrical element forming the electrical control is distributed at different positions, a field control room is arranged, the electrical elements are connected through cables, wiring is complex, the design of a wiring diagram is troublesome, the dotting debugging on an engineering field is easy to make mistakes, and a long debugging period is needed. The field operation box and the low-voltage power distribution cabinet are connected through cables for signal transmission and data exchange, and a large amount of cables, pipes, bridges, installation and laying manpower and a long engineering period are consumed.
In the invention, as described above, by adopting the circuit technology and the communication technology, the hardware control technology after the circuit connection of the control loop is converted into the software control technology depending on the same logical relationship, and a standardized software and hardware product is developed, so that the product manufacturing, wiring, line calibration and software and hardware debugging work are all completed before delivery, the engineering drawing design, factory debugging and maintenance are simpler, the number of the motor control cable, the cable bridge and the protection pipe is greatly reduced, the engineering quantity of construction and installation is reduced, and the engineering progress is accelerated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a primary control loop of a bus-based ash discharge control system in an embodiment of the present application;
FIG. 2 is a schematic diagram of a secondary control loop of a bus-based ash discharge control system in an embodiment of the present application;
FIG. 3 is a schematic diagram of a secondary control loop of a bus-based ash discharge control system according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a bus-based ash discharge control system according to yet another embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In some of the flows described in the specification and claims of this application and in the above-described figures, a number of operations are included that occur in a particular order, but it should be clearly understood that these operations may be performed out of order or in parallel as they occur herein, the number of operations, e.g., 101, 102, etc., merely being used to distinguish between various operations, and the number itself does not represent any order of performance. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram of a primary control loop of a bus-based ash discharge control system according to an embodiment of the present application; FIG. 2 is a schematic diagram of a secondary control loop of a bus-based ash discharge control system in an embodiment of the present application; FIG. 3 is a schematic diagram of a secondary control loop of a bus-based ash discharge control system according to another embodiment of the present application; FIG. 4 is a schematic diagram of a bus-based ash discharge control system according to yet another embodiment of the present application.
In one embodiment, a bus-based ash discharge control system, the ash discharge control system comprising:
the ash discharge valve controller comprises a signal output interface and a signal input interface;
as shown in FIG. 1, the ash discharge control system comprises a primary control loop for controlling the opening and closing of an ash discharge valve;
as shown in fig. 2, the ash discharge control system comprises a secondary control loop for protecting the primary control loop;
as shown in fig. 1, a first automatic switch, disposed on the primary control loop, for controlling the conduction and interruption of the primary control loop;
as shown in fig. 2, the second automatic switch is disposed on the secondary control loop and is used for controlling the conduction and interruption of the secondary control loop;
as shown in fig. 2, the first intermediate relay is arranged on the secondary control loop and is used for remotely controlling the ash discharge valve;
as shown in fig. 1, the ac contactor is arranged on the primary control loop and is used for controlling the motor of the dust discharging valve;
as shown in fig. 1, the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
as shown in fig. 2, a second intermediate relay is used on the secondary control loop for remotely controlling the start and stop of the ash discharge valve in an automatic mode;
in the ash discharge valve controller, as shown in fig. 3, the signal input interface includes a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
as shown in fig. 3, the first automatic switch is connected in series with the second automatic switch in signal connection, and is connected with the first signal input interface in signal connection;
as shown in fig. 3, the first intermediate relay is in signal connection with the second signal input interface;
as shown in fig. 3, the ac contactor is in signal connection with the third signal input interface;
as shown in fig. 3, the thermal relay is in signal connection with the fourth signal input interface;
as shown in fig. 3, the second intermediate relay is in signal connection with the signal output interface, so as to start and stop the soot unloading valve under the control of the soot unloading valve controller.
In fig. 1 to 3, the correspondence between the component numbers and the components is shown in the following table:
further, IN fig. 1 to 3, OUT represents a PLC output point, IN represents a PLC input point, SQ represents a position switch, HB represents a position indicating lamp, SLS represents a selection switch, SSE represents a safety switch, SS represents a parking button, SF represents a forward start button, KQ represents an intermediate relay, KAS and KA represent intermediate relays, KH represents a thermal relay, KM represents an ac contactor, QL11 represents an automatic switch, and QL represents an automatic switch.
For the sake of distinction, QL represents a first automatic switch, QL11 represents a second automatic switch, KQ represents a first intermediate relay, and KA represents a second intermediate relay.
In addition, as shown in fig. 3, D11 represents a first signal input interface, D12 represents a second signal input interface, D13 represents a third signal input interface, D14 represents a fourth signal input interface, and D01 represents a signal output interface. Further, in fig. 3, D15 and D16 represent a fifth signal input interface and a sixth signal input interface, respectively. In addition, L represents live wire, N represents zero wire, and GND represents ground wire. Further, CAN stands for CAN bus interface. Again, U, V and W represent the three phases of a three-phase alternating current. L represents live wire and N represents neutral wire.
As shown in fig. 1 and 2, a three-phase five-wire system is adopted, L1, L2, and L3 represent three live wires, respectively, and L11, L21, and L31 are common ports on the corresponding live wires, respectively.
In the above embodiments, further designs may be made.
For example, the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
Further, the ash discharge valve controller executes signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, and the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
In addition, as shown in FIG. 4, the ash discharge control system comprises a plurality of the ash discharge valve controllers, and the ash discharge valve control system further comprises a main control system;
and the main control system is in signal connection with each ash discharge valve controller through a CAN bus.
In addition, corresponding to the device embodiment, the application also provides a set of method embodiments. Specifically, referring to fig. 1 to 4, in the present application, a bus-based ash discharge control method is used in an ash discharge control system, the ash discharge control system including an ash discharge valve controller, and the ash discharge control method includes:
the ash discharge valve controller comprises a signal output interface and a signal input interface;
the primary control loop is used for controlling the opening and closing of the ash discharge valve;
the secondary control loop is used for protecting the primary control loop;
the primary control loop is connected with the primary control circuit through a first automatic switch;
the secondary control loop is connected with a first automatic switch arranged on the secondary control loop and used for controlling the on and off of the secondary control loop;
the first intermediate relay is arranged on the secondary control loop and is used for remotely controlling the ash discharge valve;
the primary control loop is provided with an alternating current contactor, and the alternating current contactor is used for controlling a fan of the dust discharging valve control system;
the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
the ash discharge valve is remotely controlled to be started and stopped in an automatic mode through a second intermediate relay arranged on the secondary control loop;
in the ash discharge valve controller, the signal input interface comprises a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
the first automatic switch is in signal series connection with the second automatic switch and is in signal connection with the first signal input interface;
the first intermediate relay is in signal connection with the second signal input interface;
the alternating current contactor is in signal connection with the third signal input interface;
the thermal relay is in signal connection with the fourth signal input interface;
and the second intermediate relay is in signal connection with the signal output interface so as to start and stop the ash discharge valve under the control of the ash discharge valve controller.
In the method, the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
In the method, the ash discharge valve controller executes signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, and the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
In the above method, said ash discharge control system comprises a plurality of said ash discharge valve controllers, said ash discharge valve control system further comprising a main control system;
and the main control system is in signal connection with each ash discharge valve controller through a CAN bus.
The following discusses the technical effects of the present invention:
in the prior art, as can be seen from the above chart, each equipment element in the equipment list is distributed in a plurality of boxes, cabinets and other places, because the volume of the elements is small, all the elements are arranged in a small control box and are placed together with controlled equipment such as an ash discharge valve and a star-shaped ash discharge valve, so that the power supply cable is small in size, the on-site starting and stopping operations of the equipment are integrated with a distribution box, a centralized control unit is adopted for control, the control unit and the electrical elements are all located in the same box, and signals are all centralized in the control unit.
In addition, as shown in fig. 4, a plurality of similar control boxes form a field bus (the bus type CAN be CAN \ MODBUS \ Profibus-DP), and the central control unit is used for uniformly allocating the ash discharging system, so that time-sharing ash discharging CAN be realized. Each control unit and the valve are mechanically and electrically integrated, IO signals of each valve are concentrated to the same control unit, and each valve can realize field independent start-stop operation. Each control unit is hung on the same communication bus (the bus CAN adopt any one of CAN \ MODBUS \ Profibus-DP), and the remote start-stop operation, program downloading and maintenance of each valve are mainly realized.
In the prior art, each electrical element forming the electrical control is distributed at different positions, a field control room is arranged, the electrical elements are connected through cables, wiring is complex, the design of a wiring diagram is troublesome, the dotting debugging on an engineering field is easy to make mistakes, and a long debugging period is needed. The field operation box and the low-voltage power distribution cabinet are connected through cables to carry out signal transmission and data exchange, and a large amount of cables, pipes, bridges, installation and laying manpower and a long engineering period are consumed.
In the invention, as described above, by adopting the circuit technology and the communication technology, the hardware control technology after the circuit connection of the control loop is converted into the software control technology depending on the same logical relationship, and a standardized software and hardware product is developed, so that the product manufacturing, wiring, line calibration and software and hardware debugging work are all completed before delivery, the engineering drawing design, factory debugging and maintenance are simpler, the number of the motor control cable, the cable bridge and the protection pipe is greatly reduced, the engineering quantity of construction and installation is reduced, and the engineering progress is accelerated.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the method described above may refer to the corresponding process in the foregoing device embodiment, and is not described herein again.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Reference throughout this specification to "embodiments," "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, component, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in at least one other embodiment," or "in an embodiment," or the like, throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, components, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, without limitation, a particular feature, component, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, component, or characteristic of one or more other embodiments. Such modifications and variations are intended to be included within the scope of the present application.
Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" terminal, "" component, "or" system. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (6)
1. A bus-based ash discharge control system, said ash discharge control system comprising:
the ash discharge valve controller comprises a signal output interface and a signal input interface; the ash discharge valve controller is provided with a bus communication module;
the primary control loop is used for controlling the opening and closing of the ash discharge valve;
the secondary control loop is used for protecting the primary control loop;
the first automatic switch is arranged on the primary control loop and used for controlling the conduction and the interruption of the primary control loop;
the second automatic switch is arranged on the secondary control loop and used for controlling the conduction and the interruption of the secondary control loop;
the first intermediate relay is arranged on the secondary control loop and used for remotely controlling the ash discharge valve;
the alternating current contactor is arranged on the primary control loop and used for controlling a motor of the ash discharge valve;
the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
the second intermediate relay is used on the secondary control loop and used for remotely controlling the start and stop of the ash discharge valve in an automatic mode;
in the ash discharge valve controller, the signal input interface comprises a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
the first automatic switch is in signal series connection with the second automatic switch and is in signal connection with the first signal input interface;
the first intermediate relay is in signal connection with the second signal input interface;
the alternating current contactor is in signal connection with the third signal input interface;
the thermal relay is in signal connection with the fourth signal input interface;
the second intermediate relay is in signal connection with the signal output interface so as to start and stop the ash discharge valve under the control of the ash discharge valve controller;
the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
2. The bus-based ash discharge control system of claim 1, wherein said ash discharge valve controller performs signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, wherein the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
3. A bus-based ash discharge control system as defined in any one of claims 1-2, wherein said ash discharge control system comprises a plurality of said ash discharge valve controllers, said ash discharge valve control system further comprising a main control system;
and the main control system is in signal connection with each ash discharge valve controller through a communication bus.
4. The bus-based ash discharge control method is used for an ash discharge control system, the ash discharge control system comprises an ash discharge valve controller, the ash discharge valve controller is provided with a bus communication module, and the ash discharge control method is characterized by comprising the following steps of:
the ash discharge valve controller comprises a signal output interface and a signal input interface;
the primary control loop is used for controlling the opening and closing of the ash discharge valve;
the secondary control loop is used for protecting the primary control loop;
the primary control loop is connected with the primary control circuit through a first automatic switch;
the secondary control loop is connected with the first automatic switch through a first switch;
the first intermediate relay is arranged on the secondary control loop and is used for remotely controlling the ash discharge valve;
the primary control loop is provided with an alternating current contactor, and the alternating current contactor is used for controlling a fan of the dust discharging valve control system;
the thermal relay is arranged on the primary control loop and used for disconnecting the primary control loop when the load is overloaded;
the ash discharge valve is remotely controlled to be started and stopped in an automatic mode through a second intermediate relay arranged on the secondary control loop;
in the ash discharge valve controller, the signal input interface comprises a first signal input interface, a second signal input interface, a third signal input interface and a fourth signal input interface;
the first automatic switch is in signal series connection with the second automatic switch and is in signal connection with the first signal input interface;
the first intermediate relay is in signal connection with the second signal input interface;
the alternating current contactor is in signal connection with the third signal input interface;
the thermal relay is in signal connection with the fourth signal input interface;
the second intermediate relay is in signal connection with the signal output interface so as to start and stop the ash discharge valve under the control of the ash discharge valve controller;
the ash discharge valve controller executes signal processing according to the following logic strategy:
the second automatic switch is used for independently controlling the power supply of the secondary control loop; and a pair of normally closed contacts of the thermal relay is connected to the secondary control circuit, when the current exceeds a set value, the thermal relay is switched off, the primary control circuit is switched off, the normally closed contacts of the thermal relay act to enable the secondary control circuit to be switched off, and the output of the alternating current contactor is 0.
5. The bus-based ash discharge control method of claim 4, wherein said ash discharge valve controller performs signal processing according to the following logic strategy:
the ash discharge control system comprises a selection switch, and the selection switch comprises two modes of automatic operation and manual operation; when the manual mode is selected, a starting button is pressed, the primary control loop is conducted, and the alternating current contactor is electrified; when the automatic mode is selected, a control instruction of a remote computer is obtained through the first intermediate relay, and the primary control loop is conducted or interrupted.
6. A bus-based ash discharge control method as defined in any one of claims 4-5, wherein said ash discharge control system comprises a plurality of said ash discharge valve controllers, said ash discharge valve control system further comprising a main control system;
and the main control system is connected with each ash discharge valve controller through a communication bus and carries out signal communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063086.4A CN113296424B (en) | 2020-09-30 | 2020-09-30 | Ash discharge control system and method based on bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063086.4A CN113296424B (en) | 2020-09-30 | 2020-09-30 | Ash discharge control system and method based on bus |
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| US5044697A (en) * | 1989-05-26 | 1991-09-03 | Crane Company | Brake valve control system |
| DE102004045031B4 (en) * | 2004-09-15 | 2007-08-30 | Honeywell Technologies S.A.R.L. | Control circuit for relay-operated gas valves |
| CN202023975U (en) * | 2011-03-28 | 2011-11-02 | 焦作市迈科冶金机械有限公司 | Double-layer cinder valve control system |
| CN104832694B (en) * | 2015-06-01 | 2017-04-26 | 江苏星光波纹管有限公司 | Electrical control system for dust discharging valve |
| CN109499203A (en) * | 2017-09-15 | 2019-03-22 | 王正新 | A kind of control circuit of bag filter ash discharging system |
| CN108105448B (en) * | 2017-12-12 | 2019-05-17 | 蚌埠依爱电子科技有限责任公司 | A kind of Electric air valve aperture control circuit |
| CN110155747A (en) * | 2019-06-06 | 2019-08-23 | 中冶长天国际工程有限责任公司 | Automatic ash-discharging system, automatic ash-discharging control method and device |
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