CN212808935U - Guide rail type signal adapter plate for safety barrier or isolator - Google Patents
Guide rail type signal adapter plate for safety barrier or isolator Download PDFInfo
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- CN212808935U CN212808935U CN202021779449.XU CN202021779449U CN212808935U CN 212808935 U CN212808935 U CN 212808935U CN 202021779449 U CN202021779449 U CN 202021779449U CN 212808935 U CN212808935 U CN 212808935U
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- power supply
- isolator
- safety barrier
- supply circuit
- input terminal
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Abstract
The utility model relates to a guide tracked signal keysets for safety barrier or isolator, including base plate, printed circuit board and DIN guide rail are fixed on the base plate, and the printed circuit board is fixed with power supply terminal, input terminal socket, output socket and online test interface; the power supply terminal is used for being connected with a power supply source, the power supply terminal supplies power to the input terminal socket through a power supply circuit in the printed circuit board, and the power supply circuit comprises a first power supply circuit and a second power supply circuit; the on-line test interface is used for on-line test loop signals, the plug wire is used for connecting the input terminal socket and a wiring terminal on the safety barrier or the isolator, and the DIN guide rail is used for fixing the safety barrier or the isolator. The technical scheme saves time, labor and space for installation; redundant power supply is realized through the printed circuit board, and wiring and line inspection work is greatly reduced; the loop signal is tested on line through the line test interface, so that the current situation that the line needs to be disconnected in the on-line test is changed.
Description
Technical Field
The utility model relates to an electromechanical control detects technical field, concretely relates to guide tracked signal keysets for safety barrier or isolator.
Background
The safety barrier is also called a safety retainer, is a safety interface of an intrinsic safety loop, is used for transmitting electric signals between a safety area and a danger area in a two-way mode, and can limit energy transfer from the safety area to the danger area caused by faults.
The isolator is also known as a signal isolator, a signal converter and a signal conditioner, is an important component in an industrial control system, and is electronic equipment which adopts a photoelectric isolation principle or a magnetoelectric isolation principle to isolate and convert an input signal and then output the signal.
As for the fixing methods of the safety barrier and the isolator used in the DCS and PLC control systems, two fixing methods are roughly included at present: rail-type and floor-type.
The bottom plate type is a novel installation mode which is formed in the rise of the 21 st century, a safety fence or an isolator is inserted into the bottom plate, and power supply and inner-side signal transmission are carried out through an electric connector on the bottom plate, as shown in the attached drawing 1;
the guide rail type is still a fixing mode still used by most control systems so far, as shown in fig. 2, a safety barrier or an isolator is installed in a special IO cabinet, a DIN guide rail is configured in the cabinet, the safety barrier or the isolator is clamped into the guide rail for fixing, each safety barrier or the isolator carries out power supply and inner side signal transmission through a wiring terminal, 2-core direct current power supply wires and 2-4-core signal transmission wires are generally needed, 16 paths of safety barriers or isolators are generally combined into one group for centralized power supply during engineering design, a relatively economic safety terminal is adopted for power supply protection and power cut-off and transmission control, and inner side signals are connected to a DCS card piece input terminal from the safety barrier or the isolator terminal in a cross-cabinet mode through a multi-core cable.
The guide rail type safety barrier or isolator adopting the prior art has the following technical problems:
(1) the realization difficulty of redundant power supply is large: in order to prevent the instrument from stopping working due to power failure of a power supply system or equipment failure, related design specifications generally require redundant power supply for the power supply system, a wiring mode for redundant power supply of a safety barrier or an isolator in the prior art is shown in figure 3, the wiring workload is large, more electrical elements are added, and a larger cabinet space is occupied.
(2) The power surge protection function can not be realized: the source of the high voltage power supply system connected in series generally comes from a non-isolated measuring point in the system, and because risk sources are dispersed and not concentrated, the direct protection cannot be carried out, so that large-area instrument faults or damages are likely to be caused due to the fact that the direct power supply system is connected in series with alternating current during debugging, and even larger disasters are caused.
(3) The overhaul workload is large, the risk is high: checking signals between a safety barrier or an isolator and a DCS, disconnecting the signals and connecting the signals into an ammeter in series, wherein the number of measuring points in the system is sometimes more than ten thousand, and workers need to disconnect, connect and check the signals one by one on site, so that the workload is huge and the efficiency is extremely low; the actual circuit of the system may be changed for many times, and is different from the original drawing, so that the situation of mistaken disassembly is likely to exist, and the adjacent loop contact point can also be touched by mistake, so that the working loop malfunctions, and further risks are caused.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to remedy prior art's not enough, provide a guide tracked signal keysets for safety barrier or isolator.
To solve the technical problem, the utility model discloses a realize through following technical scheme:
a guide rail type signal adapter plate for a safety barrier or an isolator comprises a substrate, a printed circuit board and a DIN guide rail, wherein the printed circuit board and the DIN guide rail are fixed on the substrate, and the printed circuit board is fixedly provided with a power supply terminal, an input terminal socket, an output socket and an online test interface; the power supply terminal is used for being connected with a power supply source, the power supply terminal supplies power to the input terminal socket through a power supply circuit in the printed circuit board, and the power supply circuit comprises a first power supply circuit and a second power supply circuit; the on-line test interface is used for on-line test loop signals, the plug wire is used for connecting the input terminal socket and a wiring terminal on the safety barrier or the isolator, and the DIN guide rail is used for fixing the safety barrier or the isolator.
Furthermore, the number of the input terminal sockets is N, and a channel power switch is arranged between each input terminal socket and the power supply circuit; the input terminal sockets correspond to the online test interfaces one by one.
Further, the number of input terminal sockets N = 16.
Furthermore, the first power supply circuit and the second power supply circuit are respectively connected with a voltage dependent resistor in parallel for realizing the power surge protection function.
Furthermore, a power supply fuse is respectively connected in series in the first power supply circuit and the second power supply circuit.
Furthermore, the first power supply circuit and the second power supply circuit are respectively connected with a power indicator lamp in parallel.
The utility model discloses the beneficial effect that can reach does:
1) the mounting plate is used as a special matching mounting plate of the guide rail type safety barrier or isolator, is designed in an integrated and combined manner, saves time, labor and space for mounting, and has attractive integral mounting effect;
2) redundant power supply is realized through two paths of power supply circuits in the printed circuit board, so that the wiring and line checking work is greatly reduced, and meanwhile, the electric elements for wiring are greatly saved;
3) the loop signal is tested on line through the line test interface, so that the current situation that the line needs to be disconnected in the on-line test is changed;
4) the power supply circuit is connected with the piezoresistor in parallel, so that the power surge protection function is realized, and the safety performance is greatly improved.
Drawings
FIG. 1 is a schematic view of the mounting and securing of a prior art floor mounted grille or isolator;
FIG. 2 is a schematic view of the installation and fixation of a guide-rail type safety barrier or isolator in the prior art;
FIG. 3 is a prior art redundant power supply wiring scheme for a guideway safety barrier or isolator;
fig. 4 is a schematic view of the connection of an embodiment of the present invention to a safety barrier or isolator;
fig. 5 is a front view of an embodiment of the invention;
fig. 6 is a circuit diagram of an embodiment of the invention;
in the figure: 1-substrate, 2-printed circuit board, 3-input terminal socket, 4-output socket, 5-channel power switch, 6-power supply terminal, 7-power fuse, 8-power indicator lamp, 9-DIN guide rail, 10-wiring terminal, 11-plug wire, 12-safety grid or isolator, 13-fixing screw, 14-online test interface and 15-piezoresistor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 4-6, a guide rail type signal adapter plate for a safety barrier or an isolator comprises a substrate 1, a printed circuit board 2 and a DIN rail 9, wherein the printed circuit board 2 and the DIN rail 9 are fixed on the substrate 1, and a power supply terminal 6, an input terminal socket 3, an output socket 4 and an online test interface 14 are fixedly arranged on the printed circuit board 2; the power supply terminal 6 is used for being connected with a power supply, the power supply terminal 6 supplies power to the input terminal socket 3 through a power supply circuit in the printed circuit board 2, the power supply circuit comprises a first power supply circuit and a second power supply circuit, and the two power supply circuits realize redundant power supply; the on-line test interface 14 is used for on-line testing of loop signals, the plug wire 11 is used for connecting the input terminal socket 3 and the wiring terminal 10 on the safety barrier or the isolator 12, the DIN guide rail 9 is used for fixing the safety barrier or the isolator 12, and when the device is used, the substrate 1 is fixed in the control cabinet through the fixing screw 13; the in-line test interface 14 is used for in-line testing of loop signals.
According to the habit of generally combining 16 paths of safety barriers or isolators into a group to carry out centralized power supply in conventional engineering design, the number of the input terminal sockets 3 is designed to be 16, and a channel power switch 5 is arranged between each input terminal socket 3 and a power supply circuit, so that independent power supply and disconnection of each safety barrier or isolator 12 are realized; the input terminal sockets 3 correspond one-to-one to the in-line test interfaces 14.
The first power supply circuit and the second power supply circuit are respectively connected with a voltage dependent resistor 15 in parallel for realizing the power surge protection function.
The first power supply circuit and the second power supply circuit are respectively connected with a power supply fuse 7 in series.
The first power supply circuit and the second power supply circuit are respectively connected with a power indicator lamp 8 in parallel.
As the special supporting mounting panel of guide tracked safety barrier or isolator, the advantage of this embodiment:
1) the integrated combined design saves time, labor and space for installation, and the integral installation effect is beautiful;
2) redundant power supply is realized through two paths of power supply circuits in the printed circuit board, so that the wiring and line checking work is greatly reduced, and meanwhile, the electric elements for wiring are greatly saved;
3) the loop signal is tested on line through the line test interface, so that the current situation that the line needs to be disconnected in the on-line test is changed;
4) the power supply circuit is connected with the piezoresistor in parallel, so that the power surge protection function is realized, and the safety performance is greatly improved.
In the description of the present invention, words such as "inner", "outer", "upper", "lower", "front", "rear", etc., indicating directions or positional relationships are used only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The above is only one of the embodiments of the present invention, the protection scope of the present invention is not limited to the above-mentioned embodiments, it should be pointed out, for the ordinary skilled person in the art, without departing from the present invention, the present invention provides a plurality of improvements and decorations made under the premise of the idea.
Claims (6)
1. A guide tracked signal keysets for safety barrier or isolator, characterized by: the device comprises a substrate (1), a printed circuit board (2) and a DIN guide rail (9), wherein the printed circuit board (2) and the DIN guide rail (9) are fixed on the substrate (1), and a power supply terminal (6), an input terminal socket (3), an output socket (4) and an online test interface (14) are fixedly arranged on the printed circuit board (2); the power supply terminal (6) is used for being connected with a power supply, the power supply terminal (6) supplies power to the input terminal socket (3) through a power supply circuit in the printed circuit board (2), and the power supply circuit comprises a first power supply circuit and a second power supply circuit; the online test interface (14) is used for online testing loop signals, the plug wire (11) is used for connecting the input terminal socket (3) and a wiring terminal (10) on the safety barrier or the isolator, and the DIN guide rail (9) is used for fixing the safety barrier or the isolator.
2. The guideway signal patch panel for a safety barrier or isolator of claim 1, wherein: the number of the input terminal sockets (3) is N, and a channel power switch (5) is arranged between each input terminal socket (3) and the power supply circuit; the input terminal sockets (3) correspond to the online test interfaces (14) one by one.
3. The guideway signal patch panel for a safety barrier or isolator of claim 2, wherein: the number of the input terminal sockets (3) is N = 16.
4. The guideway signal patch panel for a safety barrier or isolator of claim 1, wherein: and the first power supply circuit and the second power supply circuit are respectively connected with a voltage dependent resistor (15) in parallel and used for realizing the power surge protection function.
5. The guideway signal patch panel for a safety barrier or isolator of claim 1, wherein: and a power supply fuse (7) is respectively connected in series in the first power supply circuit and the second power supply circuit.
6. The guideway signal patch panel for a safety barrier or isolator of claim 1, wherein: and the first power supply circuit and the second power supply circuit are respectively connected with a power indicator lamp (8) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779449.XU CN212808935U (en) | 2020-08-24 | 2020-08-24 | Guide rail type signal adapter plate for safety barrier or isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779449.XU CN212808935U (en) | 2020-08-24 | 2020-08-24 | Guide rail type signal adapter plate for safety barrier or isolator |
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| CN212808935U true CN212808935U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021779449.XU Active CN212808935U (en) | 2020-08-24 | 2020-08-24 | Guide rail type signal adapter plate for safety barrier or isolator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871927A (en) * | 2021-09-27 | 2021-12-31 | 浙江中控技术股份有限公司 | General termination of oil gas pipeline |
| CN113949457A (en) * | 2021-09-23 | 2022-01-18 | 中航光电科技股份有限公司 | Miniaturized multichannel high-isolation radio frequency optical transmission system |
| CN114222458A (en) * | 2021-12-17 | 2022-03-22 | 中控智网(北京)能源技术有限公司 | Wiring device and cabinet |
-
2020
- 2020-08-24 CN CN202021779449.XU patent/CN212808935U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949457A (en) * | 2021-09-23 | 2022-01-18 | 中航光电科技股份有限公司 | Miniaturized multichannel high-isolation radio frequency optical transmission system |
| CN113949457B (en) * | 2021-09-23 | 2023-03-14 | 中航光电科技股份有限公司 | Miniaturized multichannel high-isolation radio frequency optical transmission system |
| CN113871927A (en) * | 2021-09-27 | 2021-12-31 | 浙江中控技术股份有限公司 | General termination of oil gas pipeline |
| CN113871927B (en) * | 2021-09-27 | 2023-11-24 | 浙江中控技术股份有限公司 | General wiring device for oil and gas pipeline |
| CN114222458A (en) * | 2021-12-17 | 2022-03-22 | 中控智网(北京)能源技术有限公司 | Wiring device and cabinet |
| CN114222458B (en) * | 2021-12-17 | 2024-03-22 | 中控创新(北京)能源技术有限公司 | Wiring device and cabinet |
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