CN214750747U - Direct current grounding alarm device - Google Patents
Direct current grounding alarm device Download PDFInfo
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- CN214750747U CN214750747U CN202022938424.6U CN202022938424U CN214750747U CN 214750747 U CN214750747 U CN 214750747U CN 202022938424 U CN202022938424 U CN 202022938424U CN 214750747 U CN214750747 U CN 214750747U
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Abstract
The utility model provides a direct current ground connection alarm device, direct current ground connection alarm device includes input interface subassembly, control assembly and warning interface subassembly, and direct current ground connection alarm device installs on thermotechnical control system's rack and control assembly passes through input interface subassembly and is connected with thermotechnical control system's input power supply, and warning interface subassembly is connected with the control assembly electricity, and control assembly detects thermotechnical control system's input power supply and takes place ground fault and report to the police through warning interface subassembly. The advantages are that: any power supply measuring point wiring loop can send alarm information at the first time when being grounded, so that maintenance personnel can conveniently eliminate faults in time, and the safe operation of the unit is ensured; the voltage to ground of the power supply can be monitored in real time, faults can be found at the initial stage of direct current grounding, workers are helped to judge the fault reason, and further expansion of the fault is avoided.
Description
Technical Field
The utility model relates to a thermotechnical control field particularly, relates to a direct current ground connection alarm device.
Background
The thermal control system is a distributed computer control system (DCS) and adopts a mode of decentralized control function, centralized display operation and consideration of division, autonomy and comprehensive coordination to carry out real-time monitoring and control on the working process of thermal power generation. Thermal control systems are usually powered by DC power sources, which are divided into two types, DC48V and DC 24V. The DC48V is mainly used as a scanning voltage of an on-state light quantity state to judge whether a switch measuring point acts or not; the DC24V is mainly used for providing voltage for DPUs, various analog measuring points, various cabinet clamping pieces, communication bottom plates and the like.
The dc power supply may have a ground fault during use, and when the positive or negative terminal of the dc power supply is grounded, the dc power supply generally does not affect the thermal control system. However, when the positive and negative ends of the dc power supply have grounding points, a short-circuit fault is formed, which causes fuse and switch tripping, thereby affecting the normal operation of the system, and in severe cases, causing the trip of the unit or equipment damage. Therefore, the alarm must be sent out immediately when the single end of the line is grounded, and faults must be checked in time.
At present, a main thermal control system does not have a direct-current grounding alarm function, and when a direct-current power supply is grounded, the direct-current power supply is difficult to find in time so as to avoid possible damage to the thermal control system. Meanwhile, because the field devices of the thermal power plant have more measuring points and the direct current grounding form is more complicated (such as real grounding, virtual grounding, multipoint grounding and the like), the detection and the troubleshooting of the grounding fault are more difficult in the routine maintenance of workers, and the occurrence of the grounding fault is difficult to prevent in advance.
In view of the foregoing, it would be desirable to provide a dc ground alarm device that overcomes the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a direct current ground connection alarm device, it can overcome prior art's defect. The utility model discloses a utility model purpose can realize through following technical scheme.
An embodiment of the utility model provides a direct current ground connection alarm device, direct current ground connection alarm device includes input interface subassembly, control assembly and warning interface subassembly, and direct current ground connection alarm device installs on thermotechnical control system's rack and control assembly passes through input interface subassembly and is connected with thermotechnical control system's input power supply, and warning interface subassembly is connected with the control assembly electricity, and control assembly detects thermotechnical control system's input power supply and takes place ground fault and reports to the police through warning interface subassembly.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned embodiment provided, wherein the input interface subassembly includes the anodal interface of 24V, 24V negative pole interface and ground connection interface, the anodal interface of 24V is connected with the 24V positive pole of thermal technology control system's input power supply, 24V negative pole interface is connected with the 24V negative pole of thermal technology control system's input power supply, ground connection interface ground connection, the anodal interface of 24V, 24V negative pole interface and ground connection interface are connected with control assembly respectively, control assembly detects the 24V positive pole that detects control assembly detection thermal technology control system's input power supply respectively, whether ground fault takes place for the 24V negative pole.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned embodiment provided, wherein the input interface subassembly still includes 48V anodal interface and 48V negative pole interface, 48V anodal interface and the 48V anodal connection of thermotechnical control system's input power supply, 48V negative pole interface is connected with the 48V negative pole of thermotechnical control system's input power supply, 48V anodal interface and 48V negative pole interface are connected with control assembly respectively, control assembly detects whether ground fault takes place with 48V anodal and 48V negative pole that detect control assembly respectively and detect the input power supply of thermotechnical control system.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein alarm interface subassembly is connected with thermotechnical control system electricity.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein direct current ground connection alarm device still includes output interface assembly, control assembly is connected with output interface assembly electricity, and control assembly exports the voltage difference between 24V positive pole, 24V negative pole, 48V positive pole and 48V negative pole and the ground connection of thermal technology control system's input power through output interface assembly.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein output interface module is connected with thermotechnical control system electricity.
The direct current grounding alarm device has the advantages that: any power supply measuring point wiring loop can send alarm information at the first time when being grounded, so that maintenance personnel can conveniently eliminate faults in time, and the safe operation of the unit is ensured; the voltage to ground of the power supply can be monitored in real time, faults can be found at the initial stage of direct current grounding, workers are helped to judge the fault reason, and further expansion of the fault is avoided.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 shows a schematic diagram of a dc ground alarm device according to an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate that variations or substitutions from these embodiments will fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Fig. 1 shows a schematic diagram of a dc ground alarm device according to an embodiment of the present invention. As shown in fig. 1, the dc ground alarm device includes an input interface component 1, a control component 2 and an alarm interface component 3, the dc ground alarm device is installed on a cabinet of the thermal engineering control system, the control component 2 is connected with an input power supply 100 of the thermal engineering control system through the input interface component 1, the alarm interface component 3 is electrically connected with the control component 2, and the control component 2 detects that the input power supply 100 of the thermal engineering control system has a ground fault and gives an alarm through the alarm interface component 3.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein input interface assembly 1 includes the anodal interface 11 of 24V, 24V negative pole interface 12 and ground connection interface 13, the anodal interface 11 of 24V is connected with the 24V positive pole of the input power 100 of thermal technology control system 200, 24V negative pole interface 12 is connected with the 24V negative pole of the input power 100 of thermal technology control system 200, ground connection interface 13 ground connection, the anodal interface 11 of 24V, 24V negative pole interface 12 and ground connection interface 13 are connected with control assembly 2 respectively, control assembly 2 detects respectively that control assembly 2 detects the 24V positive pole of the input power 100 of thermal technology control system 200, whether ground fault takes place for the 24V negative pole.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein input interface module 1 still includes 48V positive pole interface 14 and 48V negative pole interface 15, 48V positive pole interface 14 and thermal technology's control system 200's input power 100's 48V is anodal to be connected, 48V negative pole interface 15 is connected with thermal technology's control system 200's input power 100's 48V negative pole, 48V positive pole interface 14 and 48V negative pole interface 15 are connected with control assembly 2 respectively, control assembly 2 detects respectively and detects whether ground fault takes place for 48V positive pole and 48V negative pole of control assembly 2 detection thermal technology's control system 200's input power 100.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein alarm interface module 3 is connected with thermotechnical control system 200 electricity. The thermal control system 200 displays the grounding alarm information of the input power supply 100 according to the signal from the alarm interface assembly 3.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein direct current ground connection alarm device still includes output interface module 4, control assembly 2 is connected with output interface module 4 electricity, and control assembly 2 exports the voltage difference between 24V positive pole, 24V negative pole, 48V positive pole and 48V negative pole and the ground connection of input power 100 of thermal technology control system 200 through output interface module 4.
According to the utility model discloses a direct current ground connection alarm device that above-mentioned an embodiment provided, wherein output interface module 4 is connected with thermotechnical control system 200 electricity. The thermal control system 200 displays the voltage to ground of each line of the input power supply 100 according to the signal from the output interface module 4.
The direct current grounding alarm device has the advantages that: any power supply measuring point wiring loop can send alarm information at the first time when being grounded, so that maintenance personnel can conveniently eliminate faults in time, and the safe operation of the unit is ensured; the voltage to ground of the power supply can be monitored in real time, faults can be found at the initial stage of direct current grounding, workers are helped to judge the fault reason, and further expansion of the fault is avoided.
It will of course be appreciated that whilst the foregoing has been given by way of example of the present invention, such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope of the invention as herein set forth. Therefore, while the invention has been described with reference to a preferred embodiment, it is not intended that the novel features be limited thereby, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the broad scope of the disclosure and claims.
Claims (6)
1. A direct current grounding alarm device is characterized by comprising an input interface assembly, a control assembly and an alarm interface assembly, wherein the direct current grounding alarm device is installed on a cabinet of a thermotechnical control system, the control assembly is connected with an input power supply of the thermotechnical control system through the input interface assembly, the alarm interface assembly is electrically connected with the control assembly, and the control assembly detects that the input power supply of the thermotechnical control system has a grounding fault and gives an alarm through the alarm interface assembly.
2. The dc ground alarm device of claim 1, wherein the input interface assembly comprises a 24V positive interface, a 24V negative interface and a ground interface, the 24V positive interface is connected to a 24V positive electrode of an input power supply of the thermal control system, the 24V negative interface is connected to a 24V negative electrode of the input power supply of the thermal control system, the ground interface is grounded, the 24V positive interface, the 24V negative interface and the ground interface are respectively connected to the control assembly, and the control assembly detects whether the control assembly detects a ground fault occurs in the 24V positive electrode and the 24V negative electrode of the input power supply of the thermal control system.
3. The dc ground alarm device of claim 2, wherein the input interface assembly further comprises a 48V positive interface and a 48V negative interface, the 48V positive interface is connected to a 48V positive electrode of the input power supply of the thermal control system, the 48V negative interface is connected to a 48V negative electrode of the input power supply of the thermal control system, the 48V positive interface and the 48V negative interface are respectively connected to the control assembly, and the control assembly detects whether the control assembly detects a ground fault occurs in the 48V positive electrode and the 48V negative electrode of the input power supply of the thermal control system.
4. The direct current grounding alarm device of claim 1, wherein the alarm interface assembly is electrically connected to a thermal control system.
5. The dc ground alarm device of claim 3, further comprising an output interface module, wherein the control module is electrically connected to the output interface module, and the control module outputs the voltage difference between the 24V positive electrode, the 24V negative electrode, the 48V positive electrode and the 48V negative electrode of the input power of the thermal control system and the ground through the output interface module.
6. The direct current grounding alarm device of claim 5, wherein the output interface assembly is electrically connected with a thermal control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938424.6U CN214750747U (en) | 2020-12-10 | 2020-12-10 | Direct current grounding alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938424.6U CN214750747U (en) | 2020-12-10 | 2020-12-10 | Direct current grounding alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214750747U true CN214750747U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022938424.6U Active CN214750747U (en) | 2020-12-10 | 2020-12-10 | Direct current grounding alarm device |
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|---|---|
| CN (1) | CN214750747U (en) |
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2020
- 2020-12-10 CN CN202022938424.6U patent/CN214750747U/en active Active
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| CP01 | Change in the name or title of a patent holder |
Address after: 056400 Shexian Economic Development Zone, Handan City, Hebei Province Patentee after: Guoneng Hebei Longshan Power Generation Co.,Ltd. Address before: 056400 Shexian Economic Development Zone, Handan City, Hebei Province Patentee before: Guodian Hebei Longshan power generation Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |