CN115527806A - Relay module for distributed control system - Google Patents
Relay module for distributed control system Download PDFInfo
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- CN115527806A CN115527806A CN202211401088.9A CN202211401088A CN115527806A CN 115527806 A CN115527806 A CN 115527806A CN 202211401088 A CN202211401088 A CN 202211401088A CN 115527806 A CN115527806 A CN 115527806A
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- relay
- relays
- module
- power supply
- control system
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- 239000007787 solid Substances 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H2050/049—Assembling or mounting multiple relays in one common housing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Programmable Controllers (AREA)
Abstract
The invention discloses a relay module for a distributed control system. The relay module comprises a circuit board, a control signal interface arranged on the circuit board, at least one relay and wiring terminals in one-to-one correspondence with the relays; the control signal interface is arranged on a first side of the circuit board, the wiring terminal is arranged on a second side opposite to the first side, and the relay is arranged between the first side and the second side; the contact end of each relay is connected with the corresponding wiring terminal; and the control ends of all the relays are connected with the control signal interface. According to the invention, the overall layout of the relay is centered, the control signal interface is divided into one side of the relay and the connecting terminal is divided into the other side is adopted, cross interference cannot be generated on the two sides, the layout is more compact, the integration level of the relay module is high, the structure is small and exquisite, the relay module can be installed in a control cabinet where a distributed control system is located, and the hardware cost such as a relay cabinet, a power supply device in the cabinet, an inter-cabinet cable and the like is greatly saved.
Description
Technical Field
The invention relates to the technical field of relay modules, in particular to a relay module for a distributed control system.
Background
Distributed control systems are widely used in large plants such as power plants and chemical plants, and are usually deployed in a control cabinet. In the current distributed control system, an analog output module is generally adopted and is connected in series with an intermediate relay to realize the control of direct current power supply execution mechanisms such as an electromagnetic valve and an electromagnetic switch. Then, the main-stream intermediate relays are installed in a guide rail type or a panel type, and the size is large, so that the quantity of relays which can be deployed in a control cabinet is very limited, and the relays are generally installed in a special relay cabinet in a unified manner.
Disclosure of Invention
The invention provides a relay module for a distributed control system, aiming at overcoming the defects of hardware cost increase and safety caused by using an intermediate relay in the distributed control system in the prior art.
The invention solves the technical problems through the following technical scheme:
a relay module for a distributed control system comprises a circuit board, a control signal interface arranged on the circuit board, at least one relay and wiring terminals in one-to-one correspondence with the relays;
the control signal interface is arranged on a first side of the circuit board, the wiring terminal is arranged on a second side opposite to the first side, and the relay is arranged between the first side and the second side;
the contact end of each relay is connected with the corresponding wiring terminal;
and the control ends of all the relays are connected with the control signal interface.
Preferably, the relay is a direct current relay, an alternating current relay and/or a solid state relay.
Preferably, the relays are direct current relays, and the number of the relays is multiple;
the relays are transversely arranged and provided with at least two rows, the relays in the two adjacent rows are arranged in a staggered mode, and the wiring terminals are transversely arranged and provided with one row.
Preferably, the relays are alternating current relays, and the number of the relays is multiple;
the wiring terminals are transversely arranged and provided with at least two rows, the relays in two adjacent rows are arranged in a staggered mode, and the relays are transversely arranged and provided with one row.
Preferably, the relays are solid-state relays, and the number of the relays is multiple;
the relays are transversely arranged and provided with at least two rows, the relays in the two adjacent rows are arranged in a staggered manner, and the wiring terminals are transversely arranged and provided with at least three rows.
Preferably, the relay is a direct current relay and/or an alternating current relay, and the relay comprises a relay base and a relay body;
the relay base is fixedly arranged on the circuit board, and the relay body is detachably arranged on the corresponding relay base.
Preferably, the relay module further comprises at least two power terminals disposed on the circuit board;
the power supply terminals set up in first side, every power supply terminal is used for inserting power all the way respectively.
Preferably, the relay module further comprises a redundant power supply module arranged on the circuit board;
the power supply terminal is connected with the input end of the redundant power supply module, and the output end of the redundant power supply module is connected with the power supply end of the relay;
and the power supply terminal supplies power to the relay through the redundant power supply module.
Preferably, the power supply terminal and/or the connection terminal are pluggable terminals.
Preferably, the control signal interface is a connector.
The positive progress effects of the invention are as follows:
adopt the relay between two parties, control signal interface divides one side of arranging the relay, and binding post divides the overall layout of arranging the another side, and both sides can not produce cross interference, and the overall layout is compacter for the relay module integrated level is high, and the structure is small and exquisite, can install in the switch board at distributed control system place, has saved such as the hardware cost such as power supply device in relay rack, the cabinet, cable between the cabinet greatly.
Drawings
Fig. 1 is a schematic structural diagram of a relay module for a distributed control system according to embodiment 1 of the present invention.
Fig. 2 is a schematic connection diagram of a relay module for a distributed control system according to embodiment 1 of the present invention.
Fig. 3 is an exploded schematic view of a relay module for a distributed control system according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a relay module for a distributed control system according to embodiment 2 of the present invention.
Fig. 5 is a schematic structural diagram of a relay module for a distributed control system according to embodiment 3 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the invention thereto.
Example 1
The present embodiment provides a relay module for a distributed control system, and referring to fig. 1, the relay module includes a circuit board 1, a control signal interface 2 disposed on the circuit board 1, at least one relay 3, and a connection terminal 4 corresponding to the relay 3 one to one.
The control signal interface 2 is arranged on a first side of the circuit board 1, the wiring terminal 4 is arranged on a second side opposite to the first side, and the relay is arranged between the first side and the second side. As an alternative embodiment, the first side and the second side are generally longer sides of the circuit board, as shown in fig. 1, the control signal interface 2 is disposed on the left side of the circuit board 1, the connection terminal is disposed on the right side of the circuit board 1, and the relay 3 is centered. This is because the voltages used by the control signal interface 2 and the connection terminal 4 are different, for example, in a distributed control system, the control signal interface 2 of the relay module is connected to an analog output module of the distributed control system, the voltage used is 24V, the connection terminal 4 is used to connect to an external device to be controlled, such as an electromagnetic valve, an electromagnetic switch, and other actuators, and the voltage used is generally 220V, so that when the relay module is installed in a cabinet of the distributed control system, a low-voltage 24V cable and a high-voltage 220V cable are respectively arranged on two sides of the relay module, cross interference is not generated, and the safety of the operation of the relay module is ensured.
In the present embodiment, the relay module is partially connected as shown in fig. 2, and the contact terminal of each relay 3 is connected to the corresponding connection terminal 4; and the control ends of all the relays 3 are connected with the control signal interface 2.
As an alternative embodiment, the relay 3 may be a dc relay, an ac relay, or a solid-state relay.
In this embodiment, the relays 3 are dc relays, and when there are a plurality of relays, the size of the dc relays is large, so that the relays can be staggered to save space. As shown in fig. 1, the relays 3 are arranged in a transverse manner, and at least two rows of relays 3 are provided, and the relays 3 in two adjacent rows are arranged in a staggered manner, so that a part of longitudinal space can be saved, and the wiring terminals 4 are arranged in a transverse manner, and one row is provided, for example, when the relays 3 are arranged in two rows, the relays 3 in the rear row can be connected with the wiring terminals 4 through the intermediate gaps of the relays 3 in the front row, so that a compact layout in which as many relays 3 and wiring terminals 4 as possible are arranged in a space with a limited length is realized.
As an optional embodiment, when the relay 3 is a dc relay, the relay module of the present embodiment may be arranged with 10 relays 3 at most.
As an optional embodiment, when the relay 3 is a dc relay or an ac relay, the relay 3 may be a detachable relay, as shown in fig. 3, the relay 3 includes a relay body 31 and a relay base 32, wherein the relay base 32 is fixedly disposed on the circuit board 1, and the relay body 31 is detachably mounted on the corresponding relay base 32. In practice, the relay base 32 may be welded to the circuit board 1, and the relay body 31 may be manually inserted into and removed from the relay base 32, so as to greatly facilitate the replacement of the relay 3.
As shown in fig. 1, the relay module further includes at least two power terminals 5 disposed on the circuit board 1, the power terminals 5 can be connected to at least two power supplies to supply power to the relay 3, and can also be connected to one power supply, wherein each power terminal 5 is respectively used for connecting one power supply.
As an alternative embodiment, in the distributed control system, the voltage used by the power supply terminal 5 is the same as the voltage used by the control signal interface 2, and the power supply terminal 5 may be provided on the same side as the control signal interface 2. Of course, the power supply terminal 5 may be provided at a position other than the connection terminal 4.
As an optional implementation manner, the relay module is designed by using a redundant auxiliary power supply, the relay module further includes a redundant power supply module disposed on the circuit board 1, the power terminal 5 is connected to an input end of the redundant power supply module, an output end of the redundant power supply module is connected to a power terminal of the relay 3, and the power terminal 5 supplies power to the relay 3 through the redundant power supply module. As an optional implementation manner, in actual work, one power supply may be connected to supply power alone, or multiple power supplies may be connected to supply power simultaneously.
In this embodiment, the redundant power supply module is used for avoiding mutual interference between power supplies, and when any one of the power supplies fails, the redundant power supply module can isolate the power supply failure, so that the normal operation of the relay module is not affected by any one of the power supplies.
As an alternative embodiment, the connection terminal 4 and the power supply terminal 5 may be pluggable terminals with fastening screws, as shown in fig. 3, the connection terminal 4 and the power supply terminal 5 may be manually pluggable on the circuit board 1, and in normal use, the connection terminal 4 and the power supply terminal 5 may be locked on the circuit board 1 by the fastening screws. On one hand, the pluggable terminal with the fastening screw has higher anti-seismic performance, and the terminal cannot be easily loosened; on the other hand, the terminal can be inserted and pulled integrally, and the disconnection operation is avoided when the relay module is replaced, so that the short-circuit accident caused by wrong connection is avoided. Of course, the terminals 4 and the power terminals 5 of the present embodiment may also be fixed PCB (circuit board) terminals.
As an alternative embodiment, the connection terminal 4 and the power terminal 5 may be locked by a fastening screw alone, or by a fastening screw after several terminals are spliced together, as shown in fig. 1, the connection terminal 4 is locked by a fastening screw individually, and the power terminal 5 is locked by a plurality of terminals together.
As an alternative, the control signal interface 2 may adopt a connector, such as a 50-pin D-type connector or a 37-pin D-type connector, which has high signal density and is very space-saving, and is beneficial to connect as many relays 3 as possible on the circuit board 1. Of course, the control signal interface 2 of the present embodiment may also adopt a fixed PCB terminal.
In this embodiment, the relay module includes a housing, a stud and a screw, in addition to the circuit board 1, wherein the housing is divided into an upper housing and a lower housing, the stud is provided with an external thread and an internal thread, the circuit board 1 is fixed on the lower housing through the external thread of the stud and the screw hole of the lower housing, and the upper housing and the lower housing are fixed in cooperation through the internal thread of the stud and the screw.
As an alternative embodiment, the housing is made of aluminum alloy, so that the reliability is high, and it is needless to say that the housing made of injection molding material may be used according to the actual scale change of mass production.
In practical applications, a fuse is usually provided between each power terminal 5 and the redundant power supply module, and as an alternative embodiment, the fuse is a pluggable fuse, which is very convenient for replacement.
This embodiment adopts the relay between two parties, and control signal interface divides one side of arranging the relay, and binding post divides the overall layout of arranging the another side, and both sides can not produce cross interference, and the overall layout is compacter for the relay module integrated level is high, and the structure is small and exquisite, can install in the switch board at distributed control system place, has saved such as relay rack, the interior power supply device of cabinet, hardware costs such as cable between the cabinet greatly.
Example 2
The present embodiment provides a relay module for a distributed control system, which is substantially the same as that in embodiment 1, except that the relay 3 is an ac relay, and when there are a plurality of relays, the arrangement of the relay 3 and the terminal block 4 is different from that in embodiment 1.
Referring to fig. 4, the terminals 4 are transversely arranged and provided with at least two rows, the terminals 4 in two adjacent rows are staggered, a part of longitudinal space can be saved, and the relays 3 are transversely arranged and provided with one row.
As an optional embodiment, when the terminal block 4 is a pluggable terminal to which a screw is to be fastened, several terminal blocks 4 may be spliced together side by side and then staggered, for example, one relay 3 corresponds to one three-pin terminal block 4, two relays 3 may share one six-pin terminal block 4, and the six-pin terminal blocks 4 may be staggered, so that a compact layout in which as many relays 3 and terminal blocks 4 as possible are arranged in a limited length space is achieved.
As an optional embodiment, when the relays 3 are ac relays, the relay module of the present embodiment may be arranged with 16 relays 3 at most.
Example 3
This embodiment provides a relay module for a distributed control system, which is substantially the same as that in embodiment 1, except that when the relay 3 is a solid-state relay and the number of the relays is multiple, the arrangement of the relay 3 and the connection terminal 4 is different from that in embodiment 1.
Referring to fig. 5, the relays 3 are transversely arranged and provided with at least two rows, the relays 3 in two adjacent rows are arranged in a staggered manner, the relays 3 in the rear row can be connected with the wiring terminals 4 through the middle gaps of the relays 3 in the front row, and the wiring terminals 4 are transversely arranged and provided with at least three rows.
As an alternative embodiment, when the connection terminal 4 is a pluggable terminal to which a screw is to be fastened, the connection terminals 4 in each row may be spliced together and locked together by using the fastening screw, thereby saving a longitudinal space and realizing a compact layout in which as many relays 3 and connection terminals 4 as possible are arranged in a space of a limited length.
As an optional implementation manner, when the relays 3 are solid-state relays, the relay module of the present embodiment may be arranged with 16 relays 3 at most.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The relay module is characterized by comprising a circuit board, a control signal interface arranged on the circuit board, at least one relay and wiring terminals in one-to-one correspondence with the relays;
the control signal interface is arranged on a first side of the circuit board, the wiring terminal is arranged on a second side opposite to the first side, and the relay is arranged between the first side and the second side;
the contact end of each relay is connected with the corresponding wiring terminal;
and the control ends of all the relays are connected with the control signal interface.
2. The relay module for a distributed control system according to claim 1, wherein said relay is a dc relay, an ac relay and/or a solid state relay.
3. The relay module for the distributed control system according to claim 1, wherein the relay is a direct current relay, and the number of the relays is plural;
the relays are transversely arranged and provided with at least two rows, the relays in the two adjacent rows are arranged in a staggered mode, and the wiring terminals are transversely arranged and provided with one row.
4. The relay module for the distributed control system according to claim 1, wherein the relay is an ac relay, and the number of the relays is plural;
the wiring terminals are transversely arranged and provided with at least two rows, the relays in two adjacent rows are arranged in a staggered mode, and the relays are transversely arranged and provided with one row.
5. The relay module for the distributed control system according to claim 1, wherein the relays are solid-state relays, and the number of the relays is plural;
the relays are transversely arranged and provided with at least two rows, the relays in the two adjacent rows are arranged in a staggered manner, and the wiring terminals are transversely arranged and provided with at least three rows.
6. The relay module for the distributed control system according to claim 1, wherein the relay is a direct current relay and/or an alternating current relay, and the relay comprises a relay base and a relay body;
the relay base is fixedly arranged on the circuit board, and the relay body is detachably arranged on the corresponding relay base.
7. The relay module for a distributed control system according to claim 1, further comprising at least two power terminals disposed on said circuit board;
the power supply terminals are arranged on the first side, and each power supply terminal is used for being connected with one power supply respectively.
8. The relay module for a distributed control system according to claim 7, further comprising a redundant power supply module disposed on said circuit board;
the power supply terminal is connected with the input end of the redundant power supply module, and the output end of the redundant power supply module is connected with the power supply end of the relay;
and the power supply terminal supplies power to the relay through the redundant power supply module.
9. The relay module for the distributed control system according to claim 7, wherein said power terminals and/or said wire terminals are pluggable terminals.
10. The relay module for a distributed control system according to claim 1, wherein said control signal interface is a connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211401088.9A CN115527806A (en) | 2022-11-09 | 2022-11-09 | Relay module for distributed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211401088.9A CN115527806A (en) | 2022-11-09 | 2022-11-09 | Relay module for distributed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115527806A true CN115527806A (en) | 2022-12-27 |
Family
ID=84704986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211401088.9A Pending CN115527806A (en) | 2022-11-09 | 2022-11-09 | Relay module for distributed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115527806A (en) |
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2022
- 2022-11-09 CN CN202211401088.9A patent/CN115527806A/en active Pending
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