Insulation flashover indicator for overhead line system of electrified railway
By designing an insulation flashover indicator for electrified railway contact networks, the fault location is indicated by the action of the drive power supply and drive components. This solves the problem of accurately locating insulation flashover faults in existing technologies, and improves inspection efficiency and operational safety.
Patent Information
- Application Number
- CN202520330151.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing technologies make it difficult to quickly and accurately locate insulation flashover faults in the overhead contact system of electrified railways, resulting in low inspection efficiency and potential safety hazards.
An insulation flashover indicator for electrified railway contact network was designed. The indicator uses a drive power supply and drive assembly to operate during an insulation flashover, causing the connecting rod to fall freely to indicate the fault location. The indicator is limited by a retaining ring, and the indicator extends out of the protective shell to clearly identify the fault location.
It enables rapid and accurate location of insulation flashover faults, improves inspection efficiency and railway operation safety, avoids erroneous or non-operational situations, and enhances the reliability of drive components.
Smart Images
Figure CN223611639U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to railway electrification technical field, specifically, relate to a kind of electrified railway contact net insulation flashover indicator. BACKGROUND
[0002] With the rapid development of electrified railway in recent years, the operation mileage of electrified railway has reached more than 100,000 kilometers, and the number of contact net insulators on the operating railway is millions. Tunnel, heavy lightning area and heavy pollution section, especially coal transportation line, are prone to insulation flashover failure. When the contact net insulation flashover failure occurs, the existing technology for judging the fault point is to calculate the short-circuit reactance value to measure the distance from the fault point to the traction substation, which has certain error, and the maximum error is about 1000m. After insulation flashover, there is no obvious fault residual trace, and it is difficult to accurately find the fault point. Once tripping, it is difficult to find the fault point after ten days of back-and-forth patrol on the line by ten people, which affects the railway transportation efficiency and operation safety. SUMMARY
[0003] The utility model aims at providing a kind of electrified railway contact net insulation flashover indicator to improve the above problems. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0004] The application provides an electrified railway contact net insulation flashover indicator, which comprises a driving power supply, a protective shell, a driving assembly, a connecting rod and a bead ring. The driving power supply is fixedly connected with the contact net. The protective shell has a hollow structure. The driving assembly is arranged in the interior of the protective shell, and the driving assembly is electrically connected with the driving power supply. The connecting rod is arranged in the interior of the protective shell, and the bottom of the connecting rod is provided with an indicating device. The bead ring is arranged at the top of the connecting rod, and the connecting rod is fixedly connected with the driving assembly through the bead ring.
[0005] Optionally, the driving power supply and the protective shell are fixedly connected through a copper pipe.
[0006] Optionally, the top of the connecting rod is provided with a first groove, and the bead ring is matched with the first groove.
[0007] Optionally, the top of the connecting rod is provided with a second groove, and the second groove is symmetrically arranged with the first groove.
[0008] Optionally, the driving assembly comprises an electromagnet, an iron core assembly and a coil. The electromagnet is arranged at the top of the iron core assembly, and the coil is arranged at both sides of the iron core assembly.
[0009] Optionally, the iron core assembly comprises a cylindrical iron core and a limiting plate, the limiting plate is arranged at the bottom of the cylindrical iron core, the limiting plate is fixedly connected with the cylindrical iron core, and the limiting plate limits the connecting rod through the clamping bead ring.
[0010] Optionally, the side wall of the limiting plate is arranged in a stepped manner, the limiting plate comprises a first step and a second step, the first step is arranged at one end close to the cylindrical iron core, and the second step is arranged at one end close to the connecting rod, and the thickness of the first step is greater than that of the second step.
[0011] Optionally, the connection part of the first step and the second step is a curve.
[0012] Optionally, the connecting rod is externally provided with a catheter, and the inner diameter of the catheter is the same as the diameter of the connecting rod.
[0013] Optionally, the bottom of the protective shell is provided with a sealing baffle.
[0014] The beneficial effects of the present application are as follows:
[0015] The driving power supply and the driving assembly are electrically connected, the clamping bead ring limits the connecting rod and the driving assembly, when insulation flashover occurs, the clamping bead ring no longer limits the connecting rod, the connecting rod freely falls to indicate the extension of the protective shell to indicate the fault position, the flashover fault position is accurately indicated, the fault point is found by the patrol personnel for processing, the railway safe operation is maintained, the driving assembly is reliable in action and will not appear the situations of refusal to act or malfunction, and the performance of the driving assembly is fundamentally improved.
[0016] Other features and advantages of the present application will be described in the following description, and some of them will become apparent from the description, or will be understood by those skilled in the art through implementation of the embodiments of the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 It is a structural schematic diagram of the insulating flashover indicator of the electrified railway contact network.
[0019] Figure 2The figure is the action schematic view of the insulating flashover indicator for the electrified railway contact network.
[0020] Marked in the figure: 1, driving power supply device; 2, copper pipe; 3, electromagnet; 4, cylindrical iron core; 5, protective shell; 6, connecting rod; 7, guide pipe; 8, indicating device; 9, sealing baffle; 10, coil; 11, limiting plate; 12, clamping bead ring; 13, first step; 14, second step. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0022] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0023] As Figure 1As shown, the embodiment provides an electrified railway overhead line system insulation flashover indicator, which comprises a driving power supply 1, a protective shell 5, a driving assembly, a connecting rod 6 and a clamping bead ring 12, the driving power supply 1 is fixedly connected with the overhead line system, the protective shell 5 is internally hollow, the driving assembly is arranged inside the protective shell 5, the driving assembly is electrically connected with the driving power supply 1, the connecting rod 6 is arranged inside the protective shell 5, the bottom of the connecting rod 6 is provided with an indicating device 8, the clamping bead ring 12 is arranged at the top of the connecting rod 6, the connecting rod 6 is fixedly connected with the driving assembly through the clamping bead ring 12, the driving power supply 1 is an open current type driving power supply, which is installed on the overhead line system, the power output line of the open current type driving power supply is connected to the input end of the electromagnet in the driving assembly, under normal circumstances, the current flowing through the grounding jumper is very small, the open current type driving power supply has no voltage output, and the driving assembly does not act; when the overhead line system has insulation flashover failure, the grounding jumper flows through the fault current, the open current type driving power supply outputs voltage to the driving assembly to make it act, the clamping bead ring 12 no longer limits the connecting rod 6, the connecting rod 6 freely falls to extend the indicating device 8 out of the protective shell 5 to indicate the fault position, the indicating ball of the indicating device is coated with reflective paint, which can be obviously seen by the patrol personnel, so as to achieve the purpose of indicating the insulation flashover failure of the overhead line system.
[0024] In one specific embodiment of the present disclosure, the driving power supply 1 is fixedly connected with the protective shell 5 through a copper pipe 2.
[0025] In one specific embodiment of the present disclosure, the top of the connecting rod 6 is provided with a first groove, and the clamping bead ring 12 is matched with the first groove.
[0026] In one specific embodiment of the present disclosure, the top of the connecting rod 6 is provided with a second groove, and the second groove is symmetrically arranged with the first groove.
[0027] In one specific embodiment of the present disclosure, the driving assembly comprises an electromagnet 3, an iron core assembly and a coil 10, the electromagnet 3 is arranged at the top of the iron core assembly, the coil 10 is arranged at both sides of the iron core assembly, the iron core assembly comprises a cylindrical iron core 4 and a limiting plate 11, the limiting plate 11 is arranged at the bottom of the cylindrical iron core 4, the limiting plate 11 is fixedly connected with the cylindrical iron core 4, the limiting plate 11 limits the connecting rod 6 through the clamping bead ring 12, the side wall of the limiting plate 11 is arranged in a stepped manner, the limiting plate 11 comprises a first step 13 and a second step 14, the first step 13 is arranged at one end close to the cylindrical iron core 4, the second step 14 is arranged at one end close to the connecting rod 6, the thickness of the first step 13 is greater than that of the second step 14, the clamping bead ring 12 is fixed on a fixed plate, and the fixed plate and the limiting plate 11 form a cylindrical structure, as shown inFigure 2 As shown, in normal circumstances, the first step 13 and the fixed plate form a narrow surface, and the contact of the clamping bead ring 12 with the first step can realize the limiting of the connecting rod 6, when the insulating flashover fault of the catenary occurs, the grounding jumper flows through the fault current, the electromagnet 3 is electrified to generate magnetism to make the iron core assembly move upward, the second step 14 and the fixed plate form a wide surface, and the clamping bead ring 12 no longer limits the connecting rod 6, at this time, the connecting rod 6 moves downward under the action of gravity, and the indicating device 8 is ejected, and this driving mode overcomes the drawbacks of the common spring clamping bead type driving mechanism, has no adjustment workload, consistent quality in batch production, cannot be refused to move and cannot be misoperated, has no complex connecting rod tripping mechanism, is small in size, light in weight and reliable in action.
[0028] In one specific embodiment of the present disclosure, the connection between the first step 13 and the second step 14 is a curve, when the driving assembly completes the action, the electromagnet loses magnetism, the cylindrical iron core 4 falls down due to gravity, and the clamping bead ring 12 recontacts the first step 13 through the curve at the connection between the first step 13 and the second step 14.
[0029] In one specific embodiment of the present disclosure, the connecting rod 6 is externally provided with a guide pipe 7, the inner diameter of the guide pipe 7 is the same as the diameter of the connecting rod 6, and the movement direction of the connecting rod 6 can be limited by arranging the guide pipe 7.
[0030] In one specific embodiment of the present disclosure, the bottom of the protective shell 5 is provided with a sealing baffle 9, and the sealing baffle 9 can prevent the interference of the device inside by the humid environment on site.
[0031] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An electrified railway catenary insulator flashover indicator, characterised in that, Include: Driving power supply (1), the driving power supply (1) is fixedly connected with the contact network; The protective shell (5) is hollow inside; Driving assembly, the driving assembly is arranged in the inside of the protective shell (5), and the driving assembly is electrically connected with the driving power supply (1); Connecting rod (6), the connecting rod (6) is arranged in the inside of the protective shell (5), and the bottom of the connecting rod (6) is provided with an indicating device (8); The clamping bead ring (12) is arranged at the top of the connecting rod (6), and the connecting rod (6) is fixedly connected with the driving assembly through the clamping bead ring (12).
2. The electrified railway catenary insulator flash-off indicator according to claim 1, characterized in that: The driving power supply (1) is fixedly connected with the protective shell (5) through the copper pipe (2).
3. The electrified railway catenary insulator flash-off indicator according to claim 1, characterized in that: The top of the connecting rod (6) is provided with a first groove, and the clamping bead ring (12) is matched with the first groove.
4. The electrified railway catenary insulator flash-off indicator according to claim 3, characterized in that: The top of the connecting rod (6) is provided with a second groove, and the second groove is symmetrically arranged with the first groove.
5. The electrified railway catenary insulator flash-off indicator according to claim 1, characterized in that: The driving assembly includes an electromagnet (3), an iron core assembly and a coil (10), the electromagnet (3) is arranged at the top of the iron core assembly, and the coil (10) is arranged at both sides of the iron core assembly.
6. The electrified railway catenary insulator flash-off indicator according to claim 5, characterized in that: The iron core assembly includes a cylindrical iron core (4) and a limiting plate (11), the limiting plate (11) is arranged at the bottom of the cylindrical iron core (4), the limiting plate (11) is fixedly connected with the cylindrical iron core (4), and the limiting plate (11) limits the connecting rod (6) through the clamping bead ring (12).
7. The electrified railway catenary insulator flash-off indicator according to claim 6, characterized in that: The side wall of the limiting plate (11) is arranged in a stepped manner, the limiting plate (11) includes a first step (13) and a second step (14), the first step (13) is arranged at one end close to the cylindrical iron core (4), the second step (14) is arranged at one end close to the connecting rod (6), and the thickness of the first step (13) is greater than that of the second step (14).
8. The electrified railway catenary insulator flash-off indicator according to claim 7, characterized in that: The connection between the first step (13) and the second step (14) is curved.
9. The electrified railway catenary insulator flash-off indicator according to claim 1, characterized in that: The outside of the connecting rod (6) is provided with a catheter (7), and the inner diameter of the catheter (7) is the same as the diameter of the connecting rod (6).
10. The electrified railway catenary insulator flash-off indicator according to claim 1, characterized in that: The bottom of the protective shell (5) is provided with a sealing baffle (9).