CN219954410U - Solenoid valve control system and multi-power supply control system - Google Patents
Solenoid valve control system and multi-power supply control system Download PDFInfo
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- CN219954410U CN219954410U CN202321741562.2U CN202321741562U CN219954410U CN 219954410 U CN219954410 U CN 219954410U CN 202321741562 U CN202321741562 U CN 202321741562U CN 219954410 U CN219954410 U CN 219954410U
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- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000011800 void material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of transformers and discloses an electromagnetic valve control system and a multi-power supply control system, wherein the electromagnetic valve control system comprises a transformer measurement and control cabinet and an electromagnetic valve PLC, the input end of the transformer measurement and control cabinet receives an instruction signal, and the output end of the transformer measurement and control cabinet is connected with the input end of the electromagnetic valve PLC; the power end of the electromagnetic valve PLC is connected with an external power supply, and the output end of the electromagnetic valve PLC is connected with the electromagnetic valve and used for controlling the electromagnetic valve to be opened based on a control signal and controlling the transformer to drain oil; the multi-power supply control system comprises an electromagnetic valve control system and a plurality of power supply modules, wherein each power supply module is connected with a power supply end of the electromagnetic valve PLC, and all power supply modules provide at least one input power supply for the electromagnetic valve PLC. The utility model can remotely control the oil discharge of the transformer, avoid the situation that the field personnel get close to the accident transformer, save the manpower and ensure the personal safety of the field personnel.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a solenoid valve control system and a multi-power supply control system.
Background
At present, the power industry in China develops rapidly, the number and the scale of the transformer substations are huge, about 30 ten thousand transformer substations in China are present, and new forms of transformer substations such as unattended transformer substations, offshore transformer substations and the like are also developing vigorously. The total capacity of the transformer in network operation in China is about 1700 ten thousand, the total capacity is about 110 hundred million kilovolts, the oil immersed transformer accounts for about 4/5, when the oil immersed transformer operates abnormally, fire and explosion are extremely easy to occur, a large amount of insulating oil stored in the transformer is extremely easy to cause severe fire, at the moment, personnel are required to arrive at the scene or an accident oil discharging cabinet is required to manually open an accident oil discharging valve by the operator to the side of the transformer, the insulating oil in the transformer is discharged, the accident response time is prolonged, and the personal safety of the field operator is also not guaranteed.
The existing transformer remote oil drain device drains oil by controlling the opening and closing actions of the electromagnetic valve, the electromagnetic valve is supplied with power by a single power supply, and when the electromagnetic valve cannot be remotely controlled to be opened or closed due to power failure, an accident oil drain valve can be manually opened by a field operator beside the transformer, so that the accident response time is prolonged, and the labor is wasted.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to solve the problem that the oil discharge of the transformer cannot be remotely controlled in the prior art, so as to provide a solenoid valve control system and a multi-power supply control system.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
in a first aspect, the present utility model provides a solenoid valve control system comprising: the system comprises a transformer measurement and control cabinet and an electromagnetic valve PLC, wherein the input end of the transformer measurement and control cabinet receives an instruction signal, and the output end of the transformer measurement and control cabinet is connected with the input end of the electromagnetic valve PLC and is used for converting the instruction signal into a control signal and sending the control signal to the electromagnetic valve PLC, and the instruction signal represents that the transformer needs to drain oil; the power end of the electromagnetic valve PLC is connected with an external power supply, and the output end of the electromagnetic valve PLC is connected with the electromagnetic valve and used for controlling the electromagnetic valve to be opened based on a control signal and controlling the transformer to drain oil.
According to the electromagnetic valve control system provided by the utility model, when the transformer needs to drain oil, the electromagnetic valve on the oil drain pipeline of the transformer can be opened through the electromagnetic valve PLC by a remote oil drain instruction signal sent by the control room or a control screen of related equipment, so that the situation that on-site personnel cannot manually drain oil from the transformer when the transformer catches fire is avoided, a remote control scheme is provided for oil drain of the transformer, the accident response time is shortened, and the personal safety of on-site personnel is ensured.
In an alternative embodiment, the solenoid valve control system further includes: the comprehensive background is connected with the input end of the transformer measurement and control cabinet, and when the transformer needs to drain oil, the comprehensive background sends an instruction signal to the transformer measurement and control cabinet.
According to the electromagnetic valve control system provided by the utility model, an operator can remotely send an oil discharging instruction to the field transformer through the comprehensive background arranged in the control room far away from the field, the field operator is not required to arrive at the field to manually control the transformer to discharge oil, the situation that the field operator approaches to the accident transformer is avoided, and the personal safety of the field operator is ensured.
In an alternative embodiment, the solenoid valve PLC is connected with the solenoid valve through a fire-proof cable.
According to the electromagnetic valve control system provided by the utility model, when the transformer catches fire, the fire-proof cable can resist fire and high temperature, so that the integrity of a control circuit of the system is ensured, and the situation that the electromagnetic valve on the transformer cannot respond to a remote command signal due to the damage of the control circuit is avoided.
In a second aspect, the present utility model provides a multiple power supply control system, including the solenoid valve control system provided in the first aspect and a plurality of power supply modules, each power supply module being connected to a power supply terminal of the solenoid valve PLC, all power supply modules providing at least one input power supply for the solenoid valve PLC.
According to the multi-power control system provided by the utility model, the PLC power end of the electromagnetic valve adopts a multi-loop power supply mode, so that the power supply stability is ensured.
In an alternative embodiment, a power module includes: the power distribution panel is connected with the power bus and is used for supplying power to the electromagnetic valve PLC; the first end of the power bus load is connected with the power bus, and the second end of the power bus load is connected with the power end of the electromagnetic valve PLC through the first terminal box switch; the power bus load empty switch and the first terminal box empty switch are respectively used for controlling the on-off of power lines on the power bus side and the solenoid valve PLC side.
According to the multi-power control system provided by the utility model, each distribution panel is used as an independent power supply to supply power to the electromagnetic valve PLC, the power supply modules do not interfere with each other, and multi-loop power supply is provided for the electromagnetic valve PLC together.
In an alternative embodiment, the first terminal box is open to a step-out trip switch.
The multi-power supply control system provided by the utility model is separated and automatically disconnected after the voltage is low or the power is off, so that the under-voltage and zero-voltage protection effects are realized.
In an alternative embodiment, the solenoid valve PLC is provided with a plurality of power terminals, and each power module is connected to one power terminal of the solenoid valve PLC.
When the electromagnetic valve PLC is provided with a plurality of power end interfaces, a plurality of power modules are selected to be connected with each power end, and all the power modules are standby power sources.
In an alternative embodiment, when the solenoid valve PLC has only one power source terminal, the multiple power source control system further includes: the second terminal box is opened, wherein after each power module is connected with the electromagnetic valve bus, the second terminal box is opened and connected with the power end of the electromagnetic valve PLC.
According to the multi-power control system provided by the utility model, when the electromagnetic valve PLC is only provided with one power end interface, the plurality of power modules are connected to the same electromagnetic valve bus, and the power end interface of the electromagnetic valve PLC is connected with the electromagnetic valve bus, so that the power supply reliability is ensured.
In an alternative embodiment, the multiple power supply control system further comprises: the storage battery and the dual-power-supply change-over switch are connected with the electromagnetic valve bus, and then connected with the first input end of the dual-power-supply change-over switch through the second terminal box; the storage battery is connected with the second input end of the dual-power supply change-over switch; the output end of the double-power-supply change-over switch is connected with the power end of the electromagnetic valve PLC.
According to the multi-power control system provided by the utility model, when the power grid fails, the external storage battery is added, so that the power supply of the electromagnetic valve PLC can be continuously realized, and the power supply reliability is ensured.
In an alternative embodiment, the second terminal box is open to a step-out trip switch.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a composition diagram of one specific example of a solenoid valve control system according to an embodiment of the utility model;
fig. 2 is a composition diagram of one specific example of a multi-power control system according to an embodiment of the present utility model;
fig. 3 is a composition diagram of another specific example of a multi-power control system according to an embodiment of the present utility model;
fig. 4 is a composition diagram of another specific example of a multi-power control system according to an embodiment of the present utility model;
FIG. 5 is a block diagram of one particular circuit of a multiple power supply loop according to an embodiment of the utility model;
FIG. 6 is a block diagram of another specific circuit of a multiple power supply loop according to an embodiment of the utility model;
fig. 7 is a block diagram of another specific circuit of the multi-power supply loop according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The present embodiment provides a solenoid valve control system, as shown in fig. 1, including: the system comprises a transformer measurement and control cabinet 1 and an electromagnetic valve PLC, wherein the input end of the transformer measurement and control cabinet 1 receives an instruction signal, and the output end of the transformer measurement and control cabinet 1 is connected with the input end of the electromagnetic valve PLC and is used for converting the instruction signal into a control signal and sending the control signal to the electromagnetic valve PLC, and the instruction signal represents that the transformer needs to drain oil; the power end of the electromagnetic valve PLC is connected with an external power supply, and the output end of the electromagnetic valve PLC is connected with the electromagnetic valve and used for controlling the electromagnetic valve to be opened based on a control signal and controlling the transformer to drain oil.
Specifically, referring to fig. 1, when the transformer needs to drain oil, the transformer measurement and control cabinet 1 receives a command signal transmitted from a far end (i.e. the comprehensive background 2), converts the command signal into a control signal, and transmits the control signal to an input end of the electromagnetic valve PLC; the electromagnetic valve PLC is powered by an external power supply, the electromagnetic valve is controlled to be opened according to a control signal, and the transformer can drain oil through the opened electromagnetic valve.
It should be noted that, the command signal may also control the solenoid valve of the transformer to close according to engineering requirements so as to stop the oil drain.
Optionally, when the transformer needs to drain oil, two oil drain modes of manual oil drain valve or remote oil drain solenoid valve can be opened on site, and the number and the installation position of the manual oil drain valve and the oil drain solenoid valve can be designed according to actual needs without limitation.
Optionally, an air valve can be additionally arranged between the manual oil drain valve of the transformer and the electromagnetic valve, so that air in the oil drain pipeline can be conveniently extracted, and the oil drain pipeline is kept in vacuum.
Optionally, a protective cover can be additionally arranged outside the electromagnetic valve to prevent disasters such as fire disaster, water immersion and the like, so that the electromagnetic valve can normally operate in various environments such as land, sea and the like.
In some alternative embodiments, as shown in fig. 1, the solenoid valve control system further includes: the comprehensive background 2 is connected with the input end of the transformer measurement and control cabinet 1, and sends an instruction signal to the transformer measurement and control cabinet 1 when the transformer needs to drain oil; wherein, connect through the fire prevention cable between solenoid valve PLC and the solenoid valve.
Specifically, referring to fig. 1, when the transformer needs to drain oil, a worker inputs an oil drain instruction to the comprehensive background 2 on a control screen or a cabinet of a centralized control room or related equipment, the comprehensive background 2 transmits an oil drain instruction signal to the transformer measurement and control cabinet 1 through a network switch by a network cable, and the transformer measurement and control cabinet 1 converts the oil drain instruction signal into a control signal to control the action of the electromagnetic valve PLC, and opens the electromagnetic valve.
It should be noted that all devices involved in the electromagnetic valve control system can be connected by adopting a fire-proof cable, and a user can design the electromagnetic valve control system according to actual requirements without limitation.
The present embodiment provides a multi-power control system, as shown in fig. 2, including the solenoid valve control system of any of the above embodiments and any of the optional embodiments thereof, and a plurality of power modules 3, where each power module 3 is connected to a power end of the solenoid valve PLC, and all the power modules 3 provide at least one input power for the solenoid valve PLC.
Specifically, as shown in fig. 2, the comprehensive self-background sends the received oil drain instruction signal input by the operator to the transformer measurement and control cabinet 1, and the transformer measurement and control cabinet 1 controls the electromagnetic valve PLC to open the electromagnetic valve so as to drain the oil from the transformer. The multiple power ends of the electromagnetic valve PLC are respectively connected with different power modules 3, and each power module 3 is independently arranged and does not interfere with each other. When one or more power modules 3 cannot supply power, the other power modules 3 serve as standby power sources to supply power to the electromagnetic valve PLC.
In some alternative embodiments, as shown in fig. 2, the power module 3 includes: a distribution panel 31, a power bus load empty switch 32 and a first terminal box empty switch 33, wherein the distribution panel 31 is connected with the power bus and is used for supplying power to the electromagnetic valve PLC; the first end of the power bus load switch 32 is connected with the power bus, and the second end of the power bus load switch is connected with the power end of the electromagnetic valve PLC through the first terminal box switch 33; the power bus load empty switch 32 and the first terminal box empty switch 33 are respectively used for controlling the on-off of power lines on the power bus side and the solenoid valve PLC side.
Specifically, referring to fig. 2, a power bus load air switch 32 is used as a switch on the distribution panel side, and a first terminal box air switch 33 is used as a switch on the power supply side of the solenoid valve PLC; after the distribution board 31 is connected with the power bus load air switch 32 through a power bus, the power bus load air switch 32 and the first terminal box air switch 33 are respectively arranged at two positions of a control room and a site, and power is supplied to the electromagnetic valve PLC through the first terminal box air switch 33.
The switch positions and the number between the distribution board 31 and the power source terminal of the solenoid valve PLC are set as needed, and are not limited herein.
In some alternative embodiments, as shown in fig. 2, the solenoid valve PLC is provided with a plurality of power terminals at the same time, and each power module is connected to one power terminal of the solenoid valve PLC.
Specifically, as shown in fig. 2, when the electromagnetic valve PLC has a plurality of power supply terminals, each power supply terminal of the electromagnetic valve PLC is connected with an independent power supply module 3, and the plurality of power supply modules 3 are mutually standby and are respectively and directly connected with the plurality of power supply terminals of the electromagnetic valve PLC, so that the number of devices on a circuit can be reduced, the investment of devices is saved, and meanwhile, the circuit design is simplified.
As shown in fig. 2, the distribution panels 31 in each power module 3 are independently disposed, and do not interfere with each other.
In some alternative embodiments, as shown in fig. 3, when the solenoid valve PLC has only one power source terminal, the multi-power control system further includes: and the second terminal box is opened 4, wherein after each power module 3 is connected with the bus of the electromagnetic valve, the power module is connected with the power end of the electromagnetic valve PLC through the second terminal box.
Specifically, since the solenoid valve PLC has only one power terminal, the plurality of power modules 3 are commonly connected with the power terminal of the solenoid valve PLC through the solenoid valve bus, and the first terminal box void 33 and the second terminal box void 4 are respectively disposed on the power side and the terminal box side of the solenoid valve bus; when the electromagnetic valve PLC fails, the second terminal box can be directly disconnected with the empty switch 4 so as to disconnect the electromagnetic valve PLC from all the power modules 3, and the electromagnetic valve PLC is subjected to outage maintenance.
The first terminal box blank 33 and the second terminal box blank 4 are both voltage-loss trip switches.
In some alternative embodiments, as shown in fig. 4, the multi-power control system further comprises: the storage battery 5 and the dual-power-supply change-over switch 6, wherein after each power supply module is connected with the bus of the electromagnetic valve, the power supply module is connected with the first input end of the dual-power-supply change-over switch 6 through the second terminal box hollow switch 4; a battery 5 connected to a second input terminal of the dual power supply changeover switch 6; and the output end of the double-power-supply change-over switch 6 is connected with the power end of the electromagnetic valve PLC.
Specifically, by adding the storage battery 5 independent of the power supply module 3, power can be supplied to the electromagnetic valve PLC when the power grid is powered off, and since the electromagnetic valve PLC has only one power end, the storage battery 5 and the second terminal box switch 4 are connected with the power end of the electromagnetic valve PLC through the dual power supply change-over switch 6, and the power supply of the electromagnetic valve PLC can be controlled by changing the switch state of the dual power supply change-over switch 6 through the plurality of power supply modules 3 or the storage battery 5.
Illustratively, fig. 5 is a circuit diagram of the power supply portion of the multi-power control system when the solenoid valve PLC has a plurality of power terminals, fig. 6 is a circuit diagram of the power supply portion of the multi-power control system when the solenoid valve PLC has one power terminal, and fig. 7 is a circuit diagram of the power supply portion of the multi-power control system when the solenoid valve PLC has one power terminal and the system includes an external storage battery.
Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.
Claims (10)
1. A solenoid valve control system, the solenoid valve control system comprising: a transformer measurement and control cabinet and an electromagnetic valve PLC, wherein,
the input end of the transformer measurement and control cabinet receives a command signal, the output end of the transformer measurement and control cabinet is connected with the input end of the electromagnetic valve PLC and is used for converting the command signal into a control signal and sending the control signal to the electromagnetic valve PLC, and the command signal represents that the transformer needs to drain oil;
and the power end of the electromagnetic valve PLC is connected with an external power supply, and the output end of the electromagnetic valve PLC is connected with the electromagnetic valve and is used for controlling the electromagnetic valve to be opened based on the control signal and controlling the transformer to drain oil.
2. The solenoid valve control system of claim 1, further comprising:
and the comprehensive background is connected with the input end of the transformer measurement and control cabinet, and when the transformer needs to drain oil, the comprehensive background sends an instruction signal to the transformer measurement and control cabinet.
3. The solenoid valve control system of claim 1, wherein the solenoid valve PLC is connected to the solenoid valve via a fire protection cable.
4. A multi-power control system, comprising the solenoid valve control system of any one of claims 1 to 3 and a plurality of power modules, each of the power modules being connected to a power end of the solenoid valve PLC, all of the power modules providing at least one input power to the solenoid valve PLC.
5. The multiple power control system of claim 4, wherein the power module comprises: the distribution panel, the power bus load and the first terminal box are opened, wherein,
a distribution panel connected with the power bus for supplying power to the electromagnetic valve PLC;
the first end of the power bus load is connected with the power bus, and the second end of the power bus load is connected with the power end of the electromagnetic valve PLC through the first terminal box switch;
the power bus load idle switch and the first terminal box idle switch are respectively used for controlling the on-off of power lines on the power bus side and the electromagnetic valve PLC side.
6. The multiple power control system of claim 5, wherein the first terminal box is open as a voltage loss trip switch.
7. The multiple power control system of claim 5, wherein,
the electromagnetic valve PLC is simultaneously provided with a plurality of power ends, and each power module is respectively connected with one power end of the electromagnetic valve PLC.
8. The multiple power control system of claim 5, wherein when the solenoid valve PLC has only one power source terminal, the multiple power control system further comprises: the second terminal box is left empty, wherein,
and after each power module is connected with the electromagnetic valve bus, the power module is connected with the power end of the electromagnetic valve PLC through the second terminal box.
9. The multiple power control system of claim 8, further comprising: a storage battery and a dual-power supply change-over switch, wherein,
after each power module is connected with the electromagnetic valve bus, the power module is connected with the first input end of the dual-power change-over switch through the second terminal box;
the storage battery is connected with the second input end of the dual-power supply change-over switch;
and the output end of the dual-power change-over switch is connected with the power end of the electromagnetic valve PLC.
10. The multiple power control system of claim 8, wherein the second terminal box is open to a step-down trip switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741562.2U CN219954410U (en) | 2023-07-03 | 2023-07-03 | Solenoid valve control system and multi-power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741562.2U CN219954410U (en) | 2023-07-03 | 2023-07-03 | Solenoid valve control system and multi-power supply control system |
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| Publication Number | Publication Date |
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| CN219954410U true CN219954410U (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321741562.2U Active CN219954410U (en) | 2023-07-03 | 2023-07-03 | Solenoid valve control system and multi-power supply control system |
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| CN (1) | CN219954410U (en) |
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- 2023-07-03 CN CN202321741562.2U patent/CN219954410U/en active Active
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