CN220379003U - Electric valve control device based on PLC - Google Patents
Electric valve control device based on PLC Download PDFInfo
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- CN220379003U CN220379003U CN202321940164.3U CN202321940164U CN220379003U CN 220379003 U CN220379003 U CN 220379003U CN 202321940164 U CN202321940164 U CN 202321940164U CN 220379003 U CN220379003 U CN 220379003U
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- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004092 self-diagnosis Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
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Abstract
The utility model provides an electric valve control device based on a PLC (programmable logic controller), which comprises a PLC remote control system and a field control circuit, wherein the PLC remote control system and the field control circuit are connected with an electric valve. The PLC remote control system comprises an industrial personal computer, a Siemens CPU, a digital quantity output module and a digital quantity input module; the digital quantity input module is connected with the electric valve, and the digital quantity output module is connected with the industrial personal computer through the Siemens CPU. The industrial personal computer is provided with a first switch knob and a second switch knob, the first switch knob is selectively connected with the second switch knob or a remote control circuit, the second switch knob is selectively connected with a field valve opening control circuit or a field valve closing control circuit, and the remote control circuit, the field valve opening control circuit and the field valve closing control circuit are all connected with the electric valve. The electric valve control device can ensure the stability and reliability of electric valve control and can avoid misoperation, burning of a valve motor, misoperation and the like.
Description
Technical Field
The utility model relates to the technical field of valve control, in particular to an electric valve control device based on a PLC (programmable logic controller), which is used for controlling the on-off of an electric valve motor.
Background
In industrial fields, the electric valves are usually controlled by valve controllers, generally, one electric valve corresponds to one valve controller, the valve controller is in communication connection with a special monitoring system, and the switch of the electric valve is displayed and remotely controlled in a man-machine interface of the special monitoring system.
But when the electric valve is controlled remotely by a special monitoring system, the following situations exist:
a. misoperation of the electric valve;
b. the motor of the electric valve can be burnt when the electric valve is electrified for a long time;
c. when the electric valve fails, an operator cannot know the failure at the first time;
d. when the on-site operator and the remote operator operate the same electric valve at the same time, if the allocation of the operation authorities of the two sides is unclear, misoperation of the electric valve can be caused;
in order to avoid the occurrence of the above situations, a set of valve control device based on a PLC needs to be established to improve the reliability and the production safety of the electric valve control so as to ensure the normal production.
Disclosure of Invention
The utility model aims to disclose an electric valve control device based on a PLC, which can ensure the stability and reliability of electric valve control and can solve the technical problems of normal production or potential safety hazard caused by misoperation, electric valve motor burnout, electric valve misoperation and the like in the operation of an electric valve.
The technical scheme for realizing the aim of the utility model is as follows: the PLC-based electric valve control device comprises a PLC remote control system and a field control circuit, wherein the PLC remote control system and the field control circuit are connected with an electric valve;
the PLC remote control system comprises an industrial personal computer, a Siemens CPU, a digital quantity output module and a digital quantity input module; the digital quantity input module is connected with the electric valve and is used for outputting the collected switch state signal of the electric valve to the digital quantity output module; the digital quantity output module is connected with the industrial personal computer through the Siemens CPU and is used for controlling the power on or power off of the motor of the electric valve.
The industrial personal computer is provided with a first switch knob XP1 and a second switch knob XP2, the first switch knob XP1 is selectively connected with the second switch knob XP2 or a remote control circuit, the second switch knob XP2 is selectively connected with a field valve opening control circuit or a field valve closing control circuit, and the remote control circuit, the field valve opening control circuit and the field valve closing control circuit are all connected with an electric valve.
Further, the field valve closing control circuit comprises a contactor KM3 normally closed contact and a contactor KM4 coil which are sequentially connected in series, and the field valve opening control circuit comprises a contactor KM4 normally closed contact and a contactor KM3 coil which are sequentially connected in series.
Further, the remote control circuit comprises a remote valve opening control circuit and a remote valve closing control circuit;
the remote valve opening control circuit comprises a normally open contact of a relay J3, a normally closed contact of a relay J4, a normally closed contact of a contactor KM4 and a coil of the contactor KM3 which are sequentially connected in series;
the remote valve closing control circuit comprises a normally open contact of a relay J4, a normally closed contact of a relay J3, a normally closed contact of a contactor KM3 and a coil of the contactor KM4 which are sequentially connected in series.
Still further still be connected with Ko on spacing normally closed contact on the contactor KM3 coil, still be connected with Kc on spacing normally closed contact on the contactor KM4 coil, ko on spacing normally closed contact and Kc Guan Xianwei normally closed contact all are connected with electric valve through thermal overload relay FR2, and Ko on spacing normally closed contact and Kc Guan Xianwei normally closed contact all are connected with digital input module.
Still further, still be connected with motor protection circuit breaker Q2 on the electric valve, and first switch knob XP1 is connected with motor protection circuit breaker Q2's output.
Further, the PLC remote control system further comprises a Siemens power supply and a Ming latitude power supply, wherein the Siemens power supply is connected with the Siemens CPU, and the Ming latitude power supply is connected with the contactor KM3, the contactor KM4, the relay J4 coil, the relay J3 coil and the thermal overload relay FR2 coil.
Further, the digital quantity input module is connected with the electric valve through the shielding twisted pair signal wire, the digital quantity output module is connected with the contactor KM3 coil and the contactor KM4 coil through the shielding twisted pair signal wire, the model of the digital quantity output module is DQ16x230VAC/2A ST, and the model of the digital quantity input module is DI32x24VDC HF.
Furthermore, the number of the industrial personal computers is two, and the two industrial personal computers are designed for redundancy.
Furthermore, the industrial personal computer is connected with the Siemens CPU through the Ethernet, the type of the industrial personal computer is IPC-610L, and the type of the Siemens CPU is 1515-2PN.
Further, the first switch knob XP1 and the second switch knob XP2 are all NP2-BD21.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:
(1) Through the hardware circuit design of the remote control circuit, the field valve opening control circuit and the field valve closing control circuit, misoperation of the electric valve can be effectively avoided when the electric valve is opened or closed, the safety of the electric valve can be automatically protected, and the motor of the valve can be prevented from being burnt;
(2) The PLC remote control system has a valve fault self-diagnosis function, and when an electric valve is in fault, the system automatically generates an audible and visual alarm, and the valve motor is powered off to protect the valve motor;
(3) The electric valve control device has an on-site/remote control function, and only one party has operation authority at the same time;
(4) The digital quantity output module and the digital quantity input module in the electric valve control device are connected with each electric valve, and can receive the state signals of all the electric valves; each electric valve is provided with a first switch knob XP1, a second switch knob XP2, a remote control circuit, a field valve opening control circuit and a field valve closing control circuit which correspond to the electric valves; the control device can realize the control of a plurality of electric valves at the same place;
(5) The electric valve control device can selectively control the electric valve through a PLC remote control system, and can also selectively control the electric valve through a second switch knob XP2.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described.
FIG. 1 is a schematic diagram of a PLC-based electrically operated valve control device according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram showing the connection of a remote control circuit, a field valve opening control circuit and a field valve closing control circuit in the embodiment;
FIG. 3 is a flow chart of remotely controlling the opening of an electrically operated valve in an embodiment;
FIG. 4 is a flow chart of remotely controlling the closing of an electrically operated valve in an embodiment;
the method comprises the following steps of 1, an industrial personal computer; 3. a siemens power supply; 4. siemens CPU; 5. a digital quantity output module; 6. a digital quantity input module; 7. a weft-exposed power supply; 10. a switch knob; 15. an electric valve.
Detailed Description
The utility model will be further described with reference to specific embodiments, and advantages and features of the utility model will become apparent from the description. These examples are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.
The embodiment discloses an electric valve control device based on PLC, including PLC remote control system and on-the-spot control circuit, PLC remote control system and on-the-spot control circuit all are connected with electric valve.
Referring to fig. 1, the PLC remote control system includes an industrial personal computer 1, a siemens CPU4, a digital quantity output module 5, and a digital quantity input module 6. The digital quantity input module 6 is connected with the electric valve 15 and is used for outputting the collected switch state signal of the electric valve 15 to the digital quantity output module 5. The digital quantity output module 5 is connected with the industrial personal computer 1 through the Siemens CPU4 and is used for controlling the power on or power off of the electric valve motor.
Referring to fig. 1 and 2, a switch knob 10 is disposed on the industrial personal computer, and includes a first switch knob XP1 and a second switch knob XP2. The first switch knob XP1 is selectively connected with the second switch knob XP2 or a remote control circuit to select whether to open or close the valve of the electric valve 15 for field control or remote control. The second switch knob XP2 is selectively connected to a field valve opening control circuit or a field valve closing control circuit, and performs valve opening or valve closing operation on the electric valve 15. And the remote control circuit, the field valve opening control circuit and the field valve closing control circuit are all connected with the electric valve. In this embodiment, the model numbers of the first switch knob XP1 and the second switch knob XP2 are all selected as NP2-BD21.
In an alternative embodiment, referring to fig. 2, the field valve closing control circuit includes a normally closed contact of a contactor KM3 and a coil of a contactor KM4 which are sequentially connected in series, and the field valve opening control circuit includes a normally closed contact of a contactor KM4 and a coil of a contactor KM3 which are sequentially connected in series.
In an alternative embodiment, referring to FIG. 2, the remote control circuit includes a remote valve opening control circuit and a remote valve closing control circuit; the remote valve opening control circuit comprises a normally open contact of a relay J3, a normally closed contact of a relay J4, a normally closed contact of a contactor KM4 and a coil of the contactor KM3 which are sequentially connected in series; the remote valve closing control circuit comprises a normally open contact of a relay J4, a normally closed contact of a relay J3, a normally closed contact of a contactor KM3 and a coil of the contactor KM4 which are sequentially connected in series. In the embodiment, the type of the contactor is CJX1-9/22AC220V, the type of the relay is IDEC RU4S-D24, and the valve opening or closing operation of the electric valve can be remotely and on-site controlled through interlocking between the two relays and interlocking between the two contactors.
Specifically, the first switch knob XP1 may be selectively controlled in situ or remotely, and the second switch knob XP2 may be selectively opened or closed. For example: referring to fig. 2, when the first switch knob XP1 is connected with the second switch knob XP2, i.e. local control is selected, and when the second switch knob XP2 selects to close the valve, the second switch knob XP2 is connected with a field valve closing control circuit, at this time, the coil of the contactor KM4 is electrified to be attracted, and the normally closed contact of the contactor KM4 is disconnected, at this time, the electric valve 15 is closed and cannot be opened; when the second switch knob XP2 selects to open the valve, the second switch knob XP2 is switched on with the on-site valve opening control circuit, and the contactor KM3 coil is electrified to be attracted at the moment, and the normally closed contact of the contactor KM4 is disconnected, so that the electric valve is opened and cannot be closed at the moment. When the first switch knob XP1 selects remote control, the first switch knob XP1 is communicated with a remote control circuit; when the valve opening operation is carried out, the PLC controls the normally open contact of the relay J3 to be closed, the normally open contact of the relay J3 is closed, the coil of the contactor KM3 is electrified and attracted, and the normally closed contact of the contactor KM4 is opened; and the normally closed contact of the relay J3 of the remote valve closing control circuit is disconnected, and the electric valve is opened and cannot be closed at the moment. When the valve closing operation is carried out, the normally open contact of the relay J4 is controlled by the PLC, the coil of the contactor KM4 is electrified and attracted, the normally closed contact of the contactor KM4 is disconnected, and the normally closed contact of the relay J4 of the remote valve opening control circuit is disconnected, so that the electric valve 15 is closed and cannot be opened.
More specifically, the process of controlling the opening and closing of the electric valve and the on-off of the motor by using the remote control circuit is shown in fig. 3 and 4:
as shown in fig. 3, which is a flowchart for remotely controlling the valve opening of the electric valve, the method mainly includes clicking a "click-open" or "full-open" button, and after issuing an operation command for "opening the electric valve", executing a program, and specifically includes the following steps:
s1: starting;
s2: program initialization, ensuring that the relay is in a release state and all valves are in a power-off state;
s3: clicking a full-open button or a click-open button to issue an operation instruction for opening the valve;
s4: judging whether the current valve is in a fully closed state, if not, proceeding to S5; if yes, go to S6;
s5: judging whether the current valve is in a full-open state, if so, proceeding to S12; if not, proceeding to S7;
s6: the spring frame displays whether the valve is opened or not, and if yes, S7 is carried out; if not, S12 is carried out;
s7: the relay is attracted, and the valve executes opening action;
s8: judging whether the running time of the valve motor exceeds 20S, if so, proceeding to S11; if not, proceeding to S9;
s9: judging whether the valve is returned to the open state, and if not, proceeding to S8; returning to the on-bit state and proceeding to S10;
s10: releasing the relay and closing the valve motor;
s11: audible and visual alarm, and prompt alarm information;
s12: and (5) ending.
As shown in fig. 4, which is a flowchart of closing an electrically operated valve, the method mainly includes clicking a "click-to-close" or "full-close" button, and after issuing an operation command for closing the electrically operated valve, "executing a program, which specifically includes the following steps:
s13: starting;
s14: program initialization, ensuring that the relay is in a release state and all valves are in a power-off state;
s15: clicking the button of 'full close' or 'click close', and issuing an operation instruction for closing the valve;
s16: judging whether the valve is in a fully closed state, if so, proceeding to S22; if not, proceeding to S17;
s17: the relay is attracted, and the valve executes opening action;
s18: judging whether the running time of the valve motor exceeds 20S, if so, proceeding to S21; if not, proceeding to S19;
s19: judging whether the valve returns to the closed state or not, and if not, proceeding to S18; returning to the off-bit state and proceeding to S20;
s20: releasing the relay and closing the valve motor;
s21: audible and visual alarm, and prompt alarm information;
s22: and (5) ending.
Still further, referring to fig. 2, still be connected with koopen spacing normally closed contact on the contactor KM3 coil, still be connected with Kc on spacing normally closed contact on the contactor KM4 coil, koopen spacing normally closed contact and Kc Guan Xianwei normally closed contact all are connected with electric valve through thermal overload relay FR2, and koopen spacing normally closed contact and Kc Guan Xianwei normally closed contact all are connected with digital quantity input module, can real-time supervision electric valve's the feedback signal that targets in place or open feedback signal that targets in place through digital quantity input module, can interlock with valve switch control signal according to the feedback signal that gathers, avoid the valve to appear the malfunction, burn the motor.
Still further, referring to fig. 2, a motor protection circuit breaker Q2 is further connected to the electric valve, and the first switch knob XP1 is connected to an output end of the motor protection circuit breaker Q2. The motor protection circuit breaker Q2 can select to use the motor protection circuit breaker of Zhengtai NS2-25 4-6.3A, and the motor protection circuit breaker controls the on-off of each electric valve motor and simultaneously carries out overcurrent protection and short-circuit protection on the valve motor. More specifically, when the electric valve is electrified or thermally overloaded for a long time, the motor protection circuit breaker FR2 is opened, the electric valve control circuit is disconnected, the contactor KM3 and the contactor KM4 are both disconnected, and at the moment, the valve motor is disconnected to prevent the motor from burning out.
Further, referring to fig. 1, the PLC remote control system further includes a siemens power supply 3 having a model PS507 and a weft-opening power supply 7 having a model DR-120-24. The siemens power supply 3 is connected with the siemens CPU4 and is used for supplying power to the siemens CPU4, the digital quantity input module 6, the digital quantity output module 5 and the like. The exposed weft power supply 7 is connected with the contactor KM3 and the contactor KM4, the relay J4 coil, the relay J3 coil and the thermal overload relay FR2 coil and is used for supplying power to the relay coils.
Further, referring to fig. 1, the digital quantity input module 6 is connected to the electric valve 15 via a shielded twisted pair signal line, the digital quantity output module 5 is connected to the contactor KM3 coil and the contactor KM4 coil via a shielded twisted pair signal line, the model of the digital quantity output module 5 is DQ16x230VAC/2A ST, the model of the digital quantity input module 6 is DI32x24VDC HF, and the model of the shielded twisted pair signal line is RVVP 2x 1 x 0.5mm2.
Further, referring to fig. 1, there are two industrial personal computers 1, and the two industrial personal computers 1 are designed for redundancy. The industrial personal computer 1 is connected with the Siemens CPU4 through the Ethernet.
Specifically, the Siemens CPU4 is 1515-2PN, which is used as a core of a PLC remote control system and is responsible for data acquisition and processing and executing instructions such as logic operation, sequential calculation, timing, counting and the like. The industrial personal computer 1 can select the Huihua IPC-610L, is provided with a human-computer interaction interface generated by WinCC and Bo-Gong V16, operates on the industrial personal computer 1, and is used for displaying the valve opening and closing state, the fault state and the valve motor operation time in real time, controlling the full-opening, full-closing, inching opening, inching closing and scram actions of the valve, having the functions of self-diagnosis of valve faults, audible and visual alarm, storing and inquiring the operation information and alarm information of the valve, and the like.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. An electric valve controlling means based on PLC, its characterized in that: the system comprises a PLC remote control system and a field control circuit, wherein the PLC remote control system and the field control circuit are connected with an electric valve;
the PLC remote control system comprises an industrial personal computer, a Siemens CPU, a digital quantity output module and a digital quantity input module; the digital quantity input module is connected with the electric valve and is used for outputting the collected switch state signal of the electric valve to the digital quantity output module; the digital quantity output module is connected with the industrial personal computer through the Siemens CPU and is used for controlling the power on or power off of the electric valve motor;
the industrial personal computer is provided with a first switch knob XP1 and a second switch knob XP2, the first switch knob XP1 is selectively connected with the second switch knob XP2 or a remote control circuit, the second switch knob XP2 is selectively connected with a field valve opening control circuit or a field valve closing control circuit, and the remote control circuit, the field valve opening control circuit and the field valve closing control circuit are connected with the electric valve.
2. The electric valve control device according to claim 1, characterized in that: the field valve closing control circuit comprises a contactor KM3 normally closed contact and a contactor KM4 coil which are sequentially connected in series, and the field valve opening control circuit comprises a contactor KM4 normally closed contact and a contactor KM3 coil which are sequentially connected in series.
3. The electric valve control device according to claim 2, characterized in that: the remote control circuit comprises a remote valve opening control circuit and a remote valve closing control circuit;
the remote valve opening control circuit comprises a normally open contact of a relay J3, a normally closed contact of a relay J4, a normally closed contact of a contactor KM4 and a coil of the contactor KM3 which are sequentially connected in series;
the remote valve closing control circuit comprises a normally open contact of a relay J4, a normally closed contact of a relay J3, a normally closed contact of a contactor KM3 and a coil of the contactor KM4 which are sequentially connected in series.
4. The electric valve control apparatus according to claim 2 or 3, characterized in that: the electric valve is characterized in that a Ko opening limit normally-closed contact is further connected to the contactor KM3 coil, a Kc closing limit normally-closed contact is further connected to the contactor KM4 coil, the Ko opening limit normally-closed contact and the Kc Guan Xianwei normally-closed contact are connected with the electric valve through a thermal overload relay FR2, and the Ko opening limit normally-closed contact and the Kc Guan Xianwei normally-closed contact are connected with the digital input module.
5. The electric valve control device according to claim 4, characterized in that: the motor protection circuit breaker Q2 is further connected to the electric valve, and the first switch knob XP1 is connected with the output end of the motor protection circuit breaker Q2.
6. The electric valve control device according to claim 4, characterized in that: the PLC remote control system further comprises a Siemens power supply and a exposed latitude power supply, wherein the Siemens power supply is connected with the Siemens CPU, and the exposed latitude power supply is connected with the contactor KM3, the contactor KM4, the relay J4 coil, the relay J3 coil and the thermal overload relay FR2 coil.
7. The electric valve control device according to claim 2, characterized in that: the digital quantity input module is connected with the electric valve through a shielding twisted pair signal wire, the digital quantity output module is connected with the contactor KM3 coil and the contactor KM4 coil through a shielding twisted pair signal wire, the model of the digital quantity output module is DQ16x230VAC/2A ST, and the model of the digital quantity input module is DI32x24VDC HF.
8. The electric valve control device according to claim 1, characterized in that: the number of the industrial personal computers is two, and the two industrial personal computers are designed for redundancy.
9. The electric valve control device according to claim 8, characterized in that: the industrial personal computer is connected with the Siemens CPU through the Ethernet, the type of the industrial personal computer is IPC-610L, and the type of the Siemens CPU is 1515-2PN.
10. The electric valve control device according to claim 1, characterized in that: the model of the first switch knob XP1 and the model of the second switch knob XP2 are NP2-BD21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940164.3U CN220379003U (en) | 2023-07-21 | 2023-07-21 | Electric valve control device based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940164.3U CN220379003U (en) | 2023-07-21 | 2023-07-21 | Electric valve control device based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220379003U true CN220379003U (en) | 2024-01-23 |
Family
ID=89567060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321940164.3U Active CN220379003U (en) | 2023-07-21 | 2023-07-21 | Electric valve control device based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220379003U (en) |
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2023
- 2023-07-21 CN CN202321940164.3U patent/CN220379003U/en active Active
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