Fault monitoring device for high-voltage power distribution cabinet

Abstract

The utility model discloses a high voltage power distribution cabinet fault monitoring device comprising a housing, the housing is provided with a display module, the housing is internally provided with an optical fiber sensor main body electrically connected with the display module, the optical fiber sensor main body is connected with at least two sensing optical fibers, and the sensing optical fibers are electrically connected with the display module. The sensing optical fiber extends out of the shell from the interior of the shell; the shell is detachably mounted on a door plate of the high-voltage power distribution cabinet through a quick mounting mechanism, and the extension end of the sensing optical fiber is arranged at a heating electric component in the high-voltage power distribution cabinet; according to the utility model, fault monitoring can be carried out on a plurality of heating electric components at the same time, and monitoring hysteresis is effectively reduced, so that the safety of the high-voltage power distribution cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high - voltage switchgear monitoring, in particular to a high - voltage switchgear fault monitoring device. Background Art

[0002] As a device widely used in the power grid, high - voltage switchgear (high - voltage switch cabinet) will cause huge economic losses and social losses in case of failure; in addition, due to the narrow internal space of the switch cabinet, there are many heat - generating electrical components, and a large amount of heat is generated. If the heat is not discharged in time, the temperature of the heat - generating electrical components will be too high and prone to failure. Therefore, it is necessary to monitor the heat - generating electrical components.

[0003] Chinese invention patent CN 106291272B discloses a high - voltage switch cabinet fault monitoring device, including a gas probe, a gas pipeline, a gas detector, an air pump, an outlet pipe, a normally - closed solenoid valve, an exhaust gas filter and an information processing module. It monitors the high - voltage switch cabinet fault by detecting the gas generated by discharge, and realizes the live monitoring and continuous monitoring of potential faults inside the switch cabinet; the invention detects the decomposed gas through a gas probe with a horn - shaped opening structure arranged in each compartment of the high - voltage switch cabinet, measures the gas component content with a gas detector, and the information processing module judges potential faults according to the types and concentrations of discharge - decomposed gases detected by gas probes arranged at different positions; the gas pipeline is arranged along the internal insulating partition and the inner wall of the high - voltage switch cabinet; both the gas probe and the gas pipeline are made of insulating materials, preferably polytetrafluoroethylene materials.

[0004] Although the above - mentioned invention patent can monitor the fault state by collecting the gas in each chamber of the high - voltage switchgear and analyzing it, the gas in each chamber after collection needs to be controlled by a normally - closed solenoid valve so that the gas collected in each chamber enters the gas detector for analysis one by one alternately, rather than being analyzed simultaneously. This leads to a lag in the temperature value data of each chamber and cannot timely reflect the fault situation inside the high - voltage switchgear, reducing the safety. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a high - voltage switchgear fault monitoring device, which can simultaneously monitor the faults of multiple heat - generating electrical components, effectively reduce the monitoring lag, and thus improve the safety of the high - voltage switchgear.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A fault monitoring device for a high-voltage power distribution cabinet, including a housing, the housing is provided with a display module, a fiber optic sensor body electrically connected to the display module is arranged in the housing, at least two sensing optical fibers are connected to the fiber optic sensor body, and the sensing optical fibers extend from the inside of the housing to the outside of the housing; the housing is detachably installed on the door panel of the high-voltage power distribution cabinet through a quick installation mechanism, and the extending ends of the sensing optical fibers are arranged at the heating electrical components in the high-voltage power distribution cabinet.

[0008] On the basis of the above technical solutions, the present utility model can be improved as follows:

[0009] Further, the display module is installed on the end plate of the housing, and connection parts for connecting with the door panel through the quick installation mechanism are formed on opposite sides of the end plate; a window corresponding to the display module is opened on the door panel.

[0010] Further, the quick installation mechanism includes guiding blocks arranged on the two connection parts of the end plate, and two guiding grooves arranged on the inner side of the door panel for guiding the guiding blocks to move along a preset track to complete the connection.

[0011] Further, the two guiding blocks are respectively a first guiding block and a second guiding block; the two guiding grooves are respectively a first guiding groove and a second guiding groove, the first guiding groove and the second guiding groove are located on opposite sides of the window on the door panel, the first guiding groove is matched with the first guiding block, and the second guiding groove is matched with the second guiding block.

[0012] Further, both of the two guiding blocks have a cylindrical extending part and a disc-shaped hook part, and the length of the extending parts of the two guiding blocks is less than the thickness of the door panel.

[0013] Further, the first guiding groove is horizontally arranged, and a notch corresponding to the diameter of the hook part of the first guiding block is arranged at the starting end of the first guiding groove; the second guiding groove is vertically arranged, and the starting end of the second guiding groove 8 communicates with the top of the door panel and is provided with a notch corresponding to the diameter of the hook part of the second guiding block

[0014] Compared with the prior art, the technology of the present utility model has the following advantages:

[0015] By arranging a fiber optic sensor body inside the housing and arranging the sensing optical fibers on the fiber optic sensor body at the heating electrical components, the present utility model simultaneously adjusts and converts the optical signals transmitted by each sensing optical fiber by using the fiber optic sensor body to correspondingly obtain the temperature values of multiple heating electrical components, and presents them through the display module, effectively avoiding monitoring hysteresis, thereby improving the safety of the high-voltage power distribution cabinet. Description of the Drawings

[0016] The following further elaborates on the present utility model in detail in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 FIG. 5 is a schematic structural diagram of a high-voltage power distribution cabinet fault monitoring device of the present utility model installed on a high-voltage power distribution cabinet;

[0018] Figure 2 FIG. 9 is a schematic connection diagram of the high-voltage power distribution cabinet fault monitoring device of the present utility model and the door panel;

[0019] Figure 3 FIG. 13 is a schematic disassembly and assembly diagram of the high-voltage power distribution cabinet fault monitoring device of the present utility model and the door panel;

[0020] Figure 4 FIG. 17 is a schematic internal structure diagram of the high-voltage power distribution cabinet fault monitoring device of the present utility model.

[0021] Markings on the attached drawings: 1 - housing, 1a - bottom plate, 1b - top plate, 1c - end plate, 1d - first side plate, 1e - back plate, 1f - second side plate, 2 - display module, 3 - fiber optic sensor body, 4 - sensing optical fiber, 5 - door panel, 5a - window, 6 - first guiding block, 7 - second guiding block, 8 - first guiding groove, 9 - first guiding groove. Specific embodiments

[0022] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings. The description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Refer to Figures 1 to 4 , the present utility model relates to a high-voltage power distribution cabinet fault monitoring device, including a housing 1, a display module 2 arranged on the housing 1, and a fiber optic sensor body 3 arranged in the housing 1 and electrically connected to the display module 2. A sensing optical fiber 4 is connected to the fiber optic sensor body 3, and the sensing optical fiber 4 extends from the inside of the housing 1 to the outside of the housing 1. A fiber optic through hole for the sensing optical fiber 4 to pass through is arranged on the housing 1.

[0024] During use, the housing 1 is fixedly installed on the door panel 5 of the high-voltage power distribution cabinet, and the extending end of the sensing optical fiber 4 is arranged at the heating electrical components of the high-voltage power distribution cabinet; by utilizing the sensitivity of the sensing optical fiber 4 to the external environment temperature, when the temperature changes, the optical signal of the sensing optical fiber 4 changes accordingly. This optical signal is adjusted and converted into an electrical signal by the fiber optic sensor body 3, and the display module 2 displays the corresponding temperature reading based on this electrical signal, thereby realizing the fault monitoring of the high-voltage power distribution cabinet.

[0025] In order to achieve the fault monitoring of multiple heating electrical components, multiple sensing optical fibers 4 can be set according to the number of heating electrical components to be monitored; the optical fiber sensor main body 3 can simultaneously adjust and convert the optical signals sent by the multiple sensing optical fibers 4, so as to monitor the faults of multiple heating electrical components in real time. Compared with the monitoring method of arranging gas sensors in the prior art, the fault monitoring device in this embodiment effectively avoids the problem of monitoring lag caused by alternately analyzing gases one by one; at the same time, compared with the monitoring method of arranging temperature sensors in the prior art, the sensing optical fiber 4 in the fault monitoring device in this embodiment is slender and the optical signal transmission distance is long, effectively solving the problem of long-distance power supply to the temperature sensor in a high-voltage switchgear with a narrow space.

[0026] Specifically, the housing 1 is a hollow rectangular structure. The housing 1 includes a bottom plate 1a, a top plate 1b, an end plate 1c, a first side plate 1d, a back plate 1e, and a second side plate 1f. The end plate 1c is parallel to the back plate 1e, the first side plate 1d is parallel to the second side plate 1f, and connecting parts are arranged on opposite sides of the end plate 1c; during installation, the connecting parts of the end plate 1c are connected to the door panel 5 of the high-voltage switchgear through a quick-installation mechanism. The display module 2 is installed on the end plate 1c of the housing 1, and a window 5a corresponding to the display module 2 is opened on the door panel 5 of the high-voltage switchgear, so that maintenance personnel can understand the internal fault situation of the high-voltage switchgear by observing the readings on the display module 2 when the door panel 5 is closed; the extended end of the sensing optical fiber 4 passes through the back plate 1e and extends outside the housing 1 and is arranged at the heating electrical component.

[0027] The quick-installation mechanism includes guide blocks arranged on two connecting parts of the end plate 1c and two guiding grooves arranged on the inner side of the door panel 5 of the high-voltage switchgear. The guiding grooves are used to guide the guide blocks on the connecting parts of the end plate 1c to move along a preset track to complete the connection.

[0028] For the convenience of description, the guide blocks on the two connecting parts are respectively named the first guide block 6 and the second guide block 7. The stroke of the first guide block 6 is shorter than that of the second guide block 7. Both guide blocks have a cylindrical extended part and a disc-shaped hook part. The length of the extended parts of the two guide blocks is less than the thickness of the door panel 5; for the convenience of description, the two guiding grooves are respectively named the first guiding groove 8 and the second guiding groove 9. The first guiding groove 8 and the second guiding groove 9 are located on opposite sides of the window 5a on the door panel 5, and the structures of the two guiding grooves are different; among them, the first guiding groove 8 cooperates with the first guide block 6, and the second guiding groove 9 cooperates with the second guide block 7.

[0029] The first guiding groove 8 is horizontally arranged and has the same length direction as the end plate 1c; the end of the first guiding groove 8 away from the second guiding groove 9 is the starting end, and the end of the first guiding groove 8 close to the second guiding groove 9 is the ending end; the first guiding groove 8 is provided with a notch corresponding to the hook diameter of the first guiding block 6 at the starting end, so that the first guiding block 6 can enter the first guiding groove 8 through the notch and slide along the first guiding groove until it abuts against the groove wall at the ending end.

[0030] The second guiding groove 9 is vertically arranged and has the same height direction as the end plate 1c; the top end of the second guiding groove 9 is the starting end and is connected to the top of the door panel 5, and the bottom end of the second guiding groove 9 is the ending end; the second guiding groove 9 is provided with a notch corresponding to the hook diameter of the second guiding block 7 at the starting end, so that the second guiding block 7 can enter the second guiding groove 9 through the notch and slide along the second guiding groove until it abuts against the groove wall at the ending end.

[0031] During installation, the first guiding block 6 is inserted into the notch at the starting end of the first guiding groove 8 until the outer side of the connecting part of the end plate 1c is attached to the inner side of the door panel 5, and then the first guiding block 6 is driven to slide to the ending end of the first guiding groove 8. At this time, the second guiding block 7 just moves to the notch at the starting end of the second guiding groove 9, and then with the first guiding block 6 as the rotation center, the second guiding block 7 is rotated and inserted into the deep part of the second guiding groove 9 from the notch at the starting end of the second guiding groove 9, thereby completing the connection between the housing 1 and the door panel 5. The entire installation process does not require the use of tools and locking bolts, and the fault monitoring device can be quickly installed on the door panel 5 of the high-voltage switchgear cabinet. When disassembling and assembling, it is also not necessary to use tools for disassembly, which is convenient for daily inspection and maintenance.

[0032] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All kinds of modifications, substitutions or changes made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general knowledge and customary means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A high-voltage power distribution cabinet fault monitoring device, including a housing, characterized in that, The housing is provided with a display module. A fiber optic sensor body electrically connected to the display module is arranged in the housing. At least two sensing optical fibers are connected to the fiber optic sensor body, and the sensing optical fibers extend from the inside of the housing to the outside of the housing. The housing is detachably mounted on the door panel of the high-voltage power distribution cabinet through a quick installation mechanism, and the extending ends of the sensing optical fibers are arranged at the heating electrical components in the high-voltage power distribution cabinet.

2. The high-voltage switchgear fault monitoring device according to claim 1, characterized in that, The display module is mounted on the end plate of the housing. Connecting portions for connecting to the door panel through the quick installation mechanism are formed on opposite sides of the end plate. A window corresponding to the display module is formed on the door panel.

3. The high-voltage switchgear fault monitoring device according to claim 2, characterized in that, The quick installation mechanism includes guiding blocks arranged on the two connecting portions of the end plate, and two guiding grooves arranged on the inner side of the door panel for guiding the guiding blocks to move along a preset track to complete the connection.

4. The high-voltage power distribution cabinet fault monitoring device according to claim 3, characterized in that, The two guiding blocks are respectively a first guiding block and a second guiding block; the two guiding grooves are respectively a first guiding groove and a second guiding groove. The first guiding groove and the second guiding groove are located on opposite sides of the window on the door panel. The first guiding groove is matched with the first guiding block, and the second guiding groove is matched with the second guiding block.

5. The high-voltage switchgear fault monitoring device according to claim 4, characterized in that, Both of the two guiding blocks have a cylindrical extending portion and a disc-shaped hook portion, and the lengths of the extending portions of the two guiding blocks are less than the thickness of the door panel.

6. The high-voltage switchgear fault monitoring device according to claim 5, characterized in that, The first guiding groove is horizontally arranged, and a notch corresponding to the diameter of the hook portion of the first guiding block is arranged at the starting end of the first guiding groove; the second guiding groove is vertically arranged, and the starting end of the second guiding groove communicates with the top of the door panel and is provided with a notch corresponding to the diameter of the hook portion of the second guiding block.

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