A low voltage station fault diagnosis device

Abstract

The present invention discloses a low-voltage substation fault diagnosis device, comprising a diagnosis device body, the diagnosis device body comprising a mutual inductor and a shunt monitoring terminal, a control panel being provided on the surface of the shunt monitoring terminal, the shunt monitoring terminal being connected to the mutual inductor part through a monitoring cable, a front baffle being provided at the front end of the mutual inductor, a rear baffle being provided at the rear end of the mutual inductor, a middle baffle being installed between the front baffle and the rear baffle, a first threaded rod being installed on the inner side of the middle baffle, the fault diagnosis device can visually judge from the outside the depth of penetration of the needle into the inside of the substation cable through the indicator rod on the puncture mechanism in conjunction with the positioning components on both sides, thereby avoiding excessive or inadequate puncture, a protective component being provided at the front end of the puncture mechanism, the position where the needle penetrates can be sealed and shielded by the protective component, while taking into account both safety and connection stability.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage substations, and in particular to a low-voltage substation fault diagnosis device. Background Art

[0002] The low-voltage substation is usually called a 380V system, which refers to the area where a transformer provides low-voltage power supply. The division of low-voltage substations is for the needs of electricity management, and to make the management more standardized and scientific in terms of personnel division, equipment maintenance, power calculation, line loss statistics, etc. Due to the dense cable lines in the low-voltage substation, once overheating or overload occurs, it is easy to cause a short circuit or even a fire. Therefore, corresponding fault diagnosis devices are used to prevent potential risks. In the existing technology, the lines in the low-voltage substation are led outward, and the operating status of each line is monitored through the monitoring terminal. However, the construction process is complicated and laborious, and the conventional puncture-type mutual inductor will cause damage to the cable part, and the puncture effect cannot be accurately controlled manually. Therefore, while achieving monitoring, it also increases the failure rate. Summary of the Invention

[0003] In response to the above shortcomings, the present invention provides a low-voltage area fault diagnosis device to solve the problems raised in the above background technology. The present invention can accurately control the penetration depth of the puncture mechanism and provide additional reinforcement and protection functions, thereby simplifying the construction process.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A low-voltage substation fault diagnosis device includes a diagnosis device body, the diagnosis device body includes a transformer and a shunt monitoring terminal, the surface of the shunt monitoring terminal is provided with a control panel, the shunt monitoring terminal is electrically connected to the transformer part through a monitoring cable, the front end of the transformer is provided with a front baffle, the rear end of the transformer is provided with a rear baffle, a middle baffle is installed between the front baffle and the rear baffle, a first threaded rod is installed on the inner side of the middle baffle, the first threaded rod passes through the rear baffle, and the rear baffle is fixed to the first threaded rod by using a fastening nut, a plurality of puncture mechanisms are inserted into the inner side of the middle baffle, and an independent protective component is provided at the front end of each puncture mechanism, a spring sleeve is provided on the outer side of the middle baffle and the rear baffle, and a positioning component is installed inside the spring sleeve.

[0006] Furthermore, both ends of the front baffle and the middle baffle are welded into a whole, and a convex plate structure is provided on the top of the front baffle and the middle baffle, and the puncture mechanism passes through the inside of the convex plate.

[0007] Furthermore, a clamping plate is provided on the inner side of the middle baffle and the rear baffle, and the clamping plate is an arc-shaped structure as a whole. The concave part of the clamping plate is interspersed with the station cable, and each station cable is squeezed and clamped by the clamping plates on both sides. A positioning component is provided between the middle baffle and the rear baffle, and the positioning component maintains a vertical state with the middle baffle and the rear baffle at the same time.

[0008] Furthermore, the puncture mechanism includes an indicator rod and a puncture needle, a push plate is provided at the rear end of the indicator rod and the puncture needle, a plug-in sleeve is provided in the middle position of the push plate, a second threaded rod is installed inside the plug-in sleeve, and a protective component is provided at the rear end of the puncture needle.

[0009] Furthermore, the front end of the second threaded rod passes through the surface of the front baffle, and a threaded sleeve is provided on the front baffle, and the second threaded rod passes through the inside of the threaded sleeve.

[0010] Furthermore, the indicator rods are symmetrically mounted on both sides of the puncture needle, and the ends of the indicator rods are flush with the ends of the puncture needle.

[0011] Furthermore, the protective assembly includes a bonding plate and a telescopic sleeve, the bonding plate is installed at the end of the telescopic sleeve, and a conductive rod is provided at the rear end of the needle.

[0012] Furthermore, a sliding sleeve is provided in the middle of the push plate, the rear end of the telescopic sleeve is connected to an extrusion spring, and the extrusion spring and the telescopic sleeve are both inserted into the interior of the sliding sleeve, and the conductive rod passes through the interior of the telescopic sleeve and the sliding sleeve in turn and is connected to the monitoring cable part at the top.

[0013] Furthermore, the positioning assembly includes a connecting rod and a positioning bead, both ends of the connecting rod are provided with positioning springs, and the positioning bead is fixedly installed in the middle position of the connecting rod.

[0014] Furthermore, the end of the positioning spring is inserted into the interior of the spring sleeve, and the size specifications of the positioning springs at both ends of the connecting rod are exactly the same.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The low-voltage substation fault diagnosis device of the present invention can support multiple cables by simultaneously installing and fixing them using mutual inductors, simplifying the installation steps and improving the stability after connection. The three baffles can simultaneously fix multiple parallel substation cables, making operation easier.

[0017] 2. The low-voltage substation fault diagnosis device can visually judge the depth of the needle's penetration into the substation cable from the outside through the indicator rod on the puncture mechanism and the positioning components on both sides, thereby accurately controlling the needle to puncture the middle position of the substation cable to avoid excessive or inadequate puncture.

[0018] 3. The low-voltage area fault diagnosis device is provided with a protective component at the front end of the puncture mechanism, through which the position where the needle penetrates can be sealed and shielded, thereby repairing the damage caused by the puncture, while taking into account safety and connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0020] Figure 1 This is a schematic structural diagram of the appearance of a low-voltage substation fault diagnosis device according to the present invention;

[0021] Figure 2 This is a partial structural diagram of the transformer part of a low-voltage substation fault diagnosis device of the present invention;

[0022] Figure 3 This is a structural diagram of the puncture mechanism of a low-voltage station fault diagnosis device according to the present invention;

[0023] Figure 4 This is a structural diagram of the protection component of a low-voltage station fault diagnosis device of the present invention;

[0024] Figure 5 This is a structural diagram of a positioning component portion of a low-voltage station fault diagnosis device according to the present invention;

[0025] In the figure: 1. Branch monitoring terminal; 2. Control panel; 3. Substation cable; 4. Transformer; 5. Monitoring cable; 6. Front baffle; 7. Middle baffle; 8. Rear baffle; 9. First threaded rod; 10. Fastening nut; 11. Clamp; 12. Spring sleeve; 13. Positioning assembly; 14. Puncture mechanism; 15. Second threaded rod; 16. Plug sleeve; 17. Push plate; 18. Indicator rod; 19. Sliding sleeve; 20. Puncture needle; 21. Protective assembly; 22. Conductive rod; 23. Telescopic sleeve; 24. Extrusion spring; 25. Laminating plate; 26. Positioning spring; 27. Connecting rod; 28. Positioning card. Implementation Method

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, 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. Therefore, they cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] See also Figures 1 to 5A preferred embodiment of the present invention provides a low-voltage substation fault diagnosis device, comprising a diagnostic device body, including a transformer 4 and a branch monitoring terminal 1. A control panel 2 is provided on the surface of the branch monitoring terminal 1, and the branch monitoring terminal 1 is electrically connected to the transformer 4 via a monitoring cable 5. A front baffle 6 is provided at the front end of the transformer 4, and a rear baffle 8 is provided at the rear end of the transformer 4. A middle baffle 7 is installed between the front baffle 6 and the rear baffle 8. A first threaded rod 9 is installed on the inner side of the middle baffle 7 (facing the rear baffle 8). The first threaded rod 9 passes through the rear baffle 8 and is secured to the rear baffle 8 using a fastening nut 10. Multiple puncture mechanisms 14 are inserted into the inner side of the middle baffle 7, and each puncture mechanism 14 is provided with an independent protective assembly 21 at its front end. A spring sleeve 12 is provided on the outer side (facing away from each other) of each middle baffle 7 and the rear baffle 8. A positioning assembly 13 is installed within the spring sleeve 12. The low-voltage substation fault diagnosis device can collect circuit status information of the substation cable 3 during operation by installing the mutual inductor 4 in the substation cable 3 on the low-voltage substation and connecting it with the substation cable 3, and send the collected data to the external branch monitoring terminal 1 through the external monitoring cable 5, so as to monitor the operating status of the substation cable 3, thereby monitoring the operating status of the low-voltage substation through the line, and being able to give early warning and diagnosis of the generated faults, avoiding the risk of high temperature or even fire caused by overload. The branch monitoring terminal 1 is an existing mature technology, and can be used by connecting it to the mutual inductor 4 part according to the existing technology.

[0030] In this embodiment, both ends of the front baffle 6 and the middle baffle 7 are welded as a whole, and a convex plate structure is provided on the top of the front baffle 6 and the middle baffle 7, and the puncture mechanism 14 passes through the inside of the convex plate. The inner sides of the middle baffle 7 and the rear baffle 8 are provided with a splint 11, and the splint 11 is an arc-shaped structure as a whole. The concave parts of the splint 11 are arranged facing each other, and the concave parts of the splint 11 are interspersed with the platform cable 3, and each platform cable 3 is squeezed and clamped by the splints 11 on both sides. A positioning component 13 is provided between the middle baffle 7 and the rear baffle 8, and the positioning component 13 maintains a vertical state with the middle baffle 7 and the rear baffle 8 at the same time. By using the mutual inductor 4 to install and fix multiple cables at the same time, they can cooperate with each other for support, simplifying the steps of construction and installation and improving the stability after connection. Multiple parallel area cables 3 are fixed at the same time by three baffles, and the operation is easier. During installation, first remove the nut 10, place the middle baffle 7 and the front baffle 6 at the front end of the area cable 3, and align them with the first threaded rod 9 through the through hole on the rear baffle 8, and then use the clamping plate 11 on the rear baffle 8 to cooperate with the clamping plate 11 on the middle baffle 7 to clamp the area cable 3, and then use the nut 10 to fix the rear baffle 8 on the first threaded rod 9 to complete the clamping process.

[0031] For this example, please refer to Figure 3 The puncture mechanism 14 includes an indicator rod 18 and a puncture needle 20. The rear ends of the indicator rod 18 and the puncture needle 20 are provided with a push plate 17. The middle position of the push plate 17 is provided with a plug sleeve 16. The interior of the plug sleeve 16 is provided with a second threaded rod 15. The rear end of the second threaded rod 15 is sleeved in the plug sleeve 16. The rear end of the puncture needle 20 is provided with a protective component 21. The front end of the second threaded rod 15 passes through the surface of the front baffle 6, and the front baffle 6 is provided with a threaded sleeve. The second threaded rod 15 5 passes through the interior of the threaded sleeve. The indicator rod 18 is symmetrically installed on both sides of the needle 20, and the ends of the indicator rod 18 are flush with the ends of the needle 20. By rotating the second threaded rod 15 at the front end and pushing it backward, the plug sleeve 16 and the push plate 17 are squeezed, and the push plate 17, the indicator rod 18 at the rear end, and the needle 20 are moved backward at the same time until the needle 20 penetrates the middle position of the stage cable 3 fixed by the clamping plate 11, thereby completing the docking process of the conductive rod 22 and the stage cable 3.

[0032] In this embodiment, Figure 3 and Figure 4As shown, the protective component 21 includes a fitting plate 25 and a telescopic sleeve 23, the fitting plate 25 is installed at the end of the telescopic sleeve 23, the rear end of the puncture needle 20 is provided with a conductive rod 22, the middle of the push plate 17 is provided with a sliding sleeve 19, the rear end of the telescopic sleeve 23 is connected with an extrusion spring 24, and the extrusion spring 24 and the telescopic sleeve 23 are both inserted into the interior of the sliding sleeve 19, the conductive rod 22 passes through the interior of the telescopic sleeve 23 and the sliding sleeve 19 in turn and is connected to the top monitoring cable 5 part, and a protective component 21 is provided at the front end of the puncture mechanism 14, through which the protective component 21 can be used to The position where the needle 20 penetrates is closed and shielded, thereby repairing the damage caused by the puncture, while taking into account safety and connection stability. The process is automatically realized as the needle 20 penetrates, and no additional operating steps are added. After the puncture mechanism 14 is inserted into the stage cable 3 by rotating the second threaded rod 15, the bonding plate 25 at the front end of the protective component 21 contacts the surface of the stage cable 3, and the bonding plate 25 and the telescopic sleeve 23 at the rear end can be moved backward to shrink the extrusion spring 24 and apply backward pressure to the bonding plate 25, so that it fits on the stage cable 3, and the position where the needle 20 punctures is closed and shielded.

[0033] For this example, please refer to Figure 2 and Figure 5 The positioning assembly 13 includes a connecting rod 27 and a positioning card bead 28. Both ends of the connecting rod 27 are provided with a positioning spring 26. The positioning card bead 28 is fixedly installed in the middle position of the connecting rod 27. The end of the positioning spring 26 penetrates into the interior of the spring sleeve 12. The positioning spring 26 and the spring sleeve 12 are not fixed as a whole. After installation and use, the positioning spring 26 is compressed and abuts against the inner end of the spring sleeve 12, but the two can be separated when not in use. The size specifications of the positioning springs 26 at both ends of the connecting rod 27 are exactly the same. The indicator rod 18 on the puncture mechanism 14 cooperates with the positioning assemblies 13 on both sides to intuitively judge the depth of the needle 20 penetrating into the inside of the station cable 3 from the outside, thereby accurately controlling the puncture of the needle 20 To the middle position of the platform cable 3, avoid excessive or inadequate puncture, and make the subsequent diagnosis process more stable. A positioning component 13 is provided on both sides of each puncture mechanism 14. When the middle baffle 7 and the rear baffle 8 clamp the platform cable 3, the positioning spring 26 will be compressed due to the proximity of the middle baffle 7 and the rear baffle 8. Since the two positioning springs 26 have the same specifications and are subjected to the same pressure, they are in the same compression state, which prompts the middle positioning card 28 to always be in the middle position between the middle baffle 7 and the rear baffle 8. According to the alignment of the positioning card 28 with the indicator rod 18 during puncture, it can be judged that the end of the needle 20 inserted into the interior of the platform cable 3 has moved to the center position of the platform cable 3, avoiding excessive or inadequate puncture.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A low voltage substation fault diagnosis device, comprising a diagnostic device body, characterized in that: The diagnostic device body comprises a mutual inductor (4) and a branch monitoring terminal (1), a control panel (2) is provided on the surface of the branch monitoring terminal (1), the branch monitoring terminal (1) is electrically connected to the mutual inductor (4) via a monitoring cable (5), a front baffle (6) is provided at the front end of the mutual inductor (4), a rear baffle (8) is provided at the rear end of the mutual inductor (4), a middle baffle (7) is installed between the front baffle (6) and the rear baffle (8), and a second baffle (7) is installed on the inner side of the middle baffle (7). A threaded rod (9), the first threaded rod (9) passes through the rear baffle (8), and the rear baffle (8) is fixed to the first threaded rod (9) by using a fastening nut (10), a plurality of puncture mechanisms (14) are inserted into the inner side of the middle baffle (7), and a front end of each puncture mechanism (14) is provided with an independent protective component (21), the outer sides of the middle baffle (7) and the rear baffle (8) are provided with a spring sleeve (12), and a positioning component (13) is installed inside the spring sleeve (12); Both ends of the front baffle (6) and the middle baffle (7) are welded as a whole, and a convex plate structure is provided on the top of the front baffle (6) and the middle baffle (7), and the puncture mechanism (14) passes through the inside of the convex plate; the inner sides of the middle baffle (7) and the rear baffle (8) are provided with a clamping plate (11), and the clamping plate (11) is an arc-shaped structure as a whole. The concave part of the clamping plate (11) is inserted with the station cable (3), and each station cable (3) is squeezed and clamped by the clamping plates (11) on both sides. A positioning component (13) is provided between the middle baffle (7) and the rear baffle (8), and the positioning component (13) is kept vertical to the middle baffle (7) and the rear baffle (8) at the same time; The puncture mechanism (14) includes an indicator rod (18) and a puncture needle (20), wherein a push plate (17) is provided at the rear end of the indicator rod (18) and the puncture needle (20), a plug sleeve (16) is provided at the middle position of the push plate (17), a second threaded rod (15) is installed inside the plug sleeve (16), and a protective component (21) is provided at the rear end of the puncture needle (20); the front end of the second threaded rod (15) passes through the surface of the front baffle (6), and a threaded sleeve is provided on the front baffle (6), and the second threaded rod (15) passes through the inside of the threaded sleeve; the indicator rod (18) is symmetrically installed on both sides of the puncture needle (20), and the end of the indicator rod (18) is flush with the end of the puncture needle (20); The positioning assembly (13) includes a connecting rod (27) and a positioning bead (28), and both ends of the connecting rod (27) are provided with a positioning spring (26), and the positioning bead (28) is fixedly installed at the middle position of the connecting rod (27); the end of the positioning spring (26) penetrates into the interior of the spring sleeve (12), and the size specifications of the positioning springs (26) at both ends of the connecting rod (27) are exactly the same. Through the indicator rod (18) on the puncture mechanism (14) and the positioning assemblies (13) on both sides, the depth of the needle (20) penetrated into the interior of the station area cable (3) can be visually judged from the outside. According to the alignment of the positioning bead (28) with the indicator rod (18) during puncture, it can be judged that the end of the needle (20) penetrated into the interior of the station area cable (3) has moved to the center position of the station area cable (3).

2. The low voltage substation fault diagnosis device according to claim 1, characterized in that: The protective assembly (21) comprises a laminating plate (25) and a telescopic sleeve (23), wherein the laminating plate (25) is mounted on the end of the telescopic sleeve (23), and a conductive rod (22) is provided at the rear end of the needle (20).

3. The low voltage substation fault diagnosis device according to claim 2, characterized in that: A sliding sleeve (19) is provided in the middle of the push plate (17), a compression spring (24) is connected to the rear end of the telescopic sleeve (23), and the compression spring (24) and the telescopic sleeve (23) are both inserted into the interior of the sliding sleeve (19), and the conductive rod (22) passes through the interior of the telescopic sleeve (23) and the sliding sleeve (19) in sequence and is connected to the monitoring cable (5) portion at the top.

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