CN210222229U

CN210222229U - Device for detecting grounding state of contact net

Info

Publication number: CN210222229U
Application number: CN201921695515.2U
Authority: CN
Inventors: Jiuyang Ma; 马九洋
Original assignee: Signal and Communication Research Institute of CARS
Current assignee: Signal and Communication Research Institute of CARS
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-03-31
Anticipated expiration: 2029-10-10

Abstract

This scheme provides a detect device of contact net ground state for solve and detect the unsafe problem of whether ground connection of contact net. The scheme of the application comprises the following steps: the grounding wire clamp comprises a fixed end and a hook part, wherein the fixed end is directly grounded, the hook part is directly grounded, and the fixed end and the hook part are mutually insulated, wherein the fixed end is electrically connected with a target contact network so that the target contact network is grounded through the fixed end; the first end of the grounding detection module is electrically connected with the fixed end, the second end of the grounding detection module is electrically connected with the hook part, and the grounding detection module is used for determining the grounding state of the target contact net according to the voltage difference between the first end and the second end. The device that this application provided can confirm whether the contact net has ground connection through the voltage difference that detects earth clamp stiff end and hook portion. Compared with the prior art, the scheme provided by the application is strong in objectivity and high in reliability, and is favorable for improving the safety of the maintenance and overhaul of the contact network.

Description

Device for detecting grounding state of contact net

Technical Field

The utility model relates to an electronic railway field especially relates to a detect device of contact net ground state.

Background

In the field of electric railways, contact networks are high-voltage transmission lines which are erected in a zigzag shape above rails in an electric railway and used for current collection of pantographs. The overhead contact system is a main framework of the railway electrification engineering and is a special power transmission line which is erected along a railway line and supplies power to an electric locomotive.

In order to ensure the safety of the power supply of the electrified railway, the contact network is required to be maintained and overhauled. In prior art, whether the staff will at first have a power failure to the contact net confirms, then under the prerequisite that the contact net has a power failure, be connected the contact net with ground rail, realize contact net ground connection, maintain the maintenance to the contact net again at last.

In the practical application process, the maintenance and the overhaul are carried out after the contact network is firmly and reliably grounded, but whether the contact network is grounded is usually judged by workers only according to the connection state and the appearance of each electrical component, and the judgment result is strong in subjectivity. To the inside condition that breaks circuit or junction is insecure that appears of electrical component, the staff can't accurately judge through electrical component's connection state outward appearance.

Therefore, how to accurately detect whether the contact net is grounded is the technical problem to be solved by the application.

SUMMERY OF THE UTILITY MODEL

The purpose of the embodiment of the application is to provide a device for detecting the grounding state of a contact network, and the device is used for solving the problem that whether the contact network is accurately grounded in the prior art.

The application provides a detect device of contact net ground state includes:

the grounding wire clamp comprises a fixed end and a hook part, wherein the fixed end is directly grounded, the hook part is directly grounded, and the fixed end and the hook part are mutually insulated, wherein the fixed end is electrically connected with a target contact network so that the target contact network is grounded through the fixed end;

the first end of the grounding detection module is electrically connected with the fixed end, the second end of the grounding detection module is electrically connected with the hook part, and the grounding detection module is used for determining the grounding state of the target contact net according to the voltage difference between the first end and the second end.

Preferably, based on the above apparatus, the ground fault detection module includes:

a standard resistance;

the standard voltage detection submodule is electrically connected with two ends of the standard resistor and is used for detecting a standard voltage difference value of two ends of the standard resistor;

the target voltage detection submodule is used for detecting a target voltage difference value between the fixed end and the hook part, and one end of the target voltage detection submodule is electrically connected with the fixed end and the other end of the target voltage detection submodule is electrically connected with the hook part;

and the voltage comparator is used for determining the grounding state of the target overhead line system according to the standard voltage difference value and the target voltage difference value.

Preferably, based on the device, the grounding detection module comprises a grounding alarm submodule, and the grounding alarm submodule is used for giving an alarm when the grounding state of the target contact network meets a preset condition.

Preferably, based on the above apparatus, the apparatus further comprises:

the insulation support rod and the conductive hook are arranged at one end of the insulation support rod;

the conductive hook is electrically connected with the fixed end through a wire and is used for hooking the target contact network so as to enable the target contact network to pass through the conductive hook and the fixed end to be grounded.

Preferably, based on the above apparatus, the apparatus further comprises:

the electricity testing module is arranged on the insulating support rod and used for testing whether the target contact net is electrified or not.

Preferably, based on the above device, the electricity testing module comprises:

the voltage detection submodule is used for detecting the voltage value carried by the target contact network;

and the voltage identification submodule is used for determining the electrification type of the target contact network according to the voltage value of the target contact network.

Preferably, based on the device, the electricity testing module comprises a voltage alarm submodule, and the voltage alarm submodule is used for giving an alarm according to the electrification type of the target contact network.

Preferably, based on the device, the electricity testing module is a non-contact electricity testing module and is fixed at one end of the insulating support rod through a metal wire hoop.

Preferably, based on the device, the insulating support rod with the conductive hook is connected through the detachable connecting part, the electricity testing module is arranged at one end, close to the conductive hook, of the insulating support rod.

Preferably, based on the above device, the detachable connection part comprises a threaded sleeve.

In this application embodiment, the earth clamp includes mutual insulating stiff end and hook portion, and wherein, the contact net passes through stiff end ground connection, and hook portion direct ground connection. The grounding detection module can determine the grounding state of the target contact net by detecting the voltage difference between the fixed end and the hook part. When the overhead line system is grounded, the voltage difference between the first end and the second end of the grounding detection module is often smaller, and when the overhead line system is not grounded, the voltage difference between the first end and the second end of the grounding detection module is often larger. The device that this application provided can confirm whether the contact net has ground connection through the voltage difference that detects earth clamp stiff end and hook portion. Compared with the prior art, the scheme provided by the application is strong in objectivity and high in reliability, and is favorable for improving the safety of the maintenance and overhaul of the contact network.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is one of the schematic structural diagrams of the device for detecting the grounding state of the overhead line system in the application embodiment;

fig. 2 is a second schematic structural diagram of the apparatus for detecting the grounding state of the overhead line system according to the embodiment;

fig. 3 is a third schematic structural diagram of the device for detecting the grounding state of the overhead line system in the embodiment;

fig. 4 is a fourth schematic structural diagram of the device for detecting the grounding state of the overhead line system in the application embodiment;

fig. 5 is a fifth schematic structural view of the device for detecting the grounding state of the overhead line system in the application embodiment;

fig. 6 is a sixth schematic structural view of the device for detecting the grounding state of the overhead line system in the application embodiment;

fig. 7 is a seventh schematic structural diagram of an apparatus for detecting a grounding state of a catenary according to an embodiment of the present disclosure;

fig. 8 is an eighth schematic structural diagram of an apparatus for detecting a grounding state of a catenary according to an embodiment of the present disclosure;

fig. 9 is a ninth schematic structural diagram of an apparatus for detecting a grounding state of a catenary according to an embodiment of the present invention;

fig. 10 is a tenth of the schematic structural diagram of the device for detecting the grounding state of the overhead line system in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. The reference numbers in the present application are only used for distinguishing the steps in the scheme and are not used for limiting the execution sequence of the steps, and the specific execution sequence is described in the specification.

In the field of electrified railways, the electrified railways provide traction energy for trains through contact networks, the power supply system adopted in China is that alternating current power frequency 25kV voltage is used for power supply, and the fluctuation range of the normal electrified voltage of the contact networks is allowed to be in the range of 18kV-27.5 kV. The high-tension electricity that the contact net was taken is very dangerous to the maintainer, consequently, need stop the power supply to the contact net before carrying out the contact net and overhauing to guarantee that the maintainer can overhaul under the safety ring border.

After the contact network is stopped to supply power, although theoretically, the contact network cannot be electrified, under the influence of external electromagnetism, especially under the influence of electromagnetism close to an electrified railway contact network, the contact network which stops supplying power still can have charges with similar electrostatic effects, at this time, the contact network belt induced electricity can be called, the voltage value of the induced electricity can often reach thousands of volts, although the induced electricity generally can not harm the personal safety of maintainers, the induced electricity can often confirm whether the contact network is electrified or not to cause interference for field workers.

In order to further ensure the personal safety of the maintainers in the overhauling process, the overhead line system is connected with the ground before overhauling so as to lead out the charges carried by the overhead line system. In addition, even if the contact net receives an incoming call due to an accident, the current can be led into the ground, so that the safety of personnel in a working area is guaranteed. Therefore, the grounding state of the contact net is accurately detected, and the maintenance is very important under the condition that the contact net is firmly and reliably grounded.

In order to solve the problem that exists among the prior art, accurately detect contact net ground state, this application provides a device for detecting contact net ground state, as shown in fig. 1, include:

the grounding wire clamp 11 comprises a directly grounded fixing end 111 and a directly grounded hook part 112, wherein the fixing end 111 and the hook part 112 are insulated from each other, and the fixing end 111 is electrically connected with a target contact net so that the target contact net is grounded through the fixing end 111;

the first end 12a of the ground detection module is electrically connected to the fixed end 111, the second end 12b of the ground detection module is electrically connected to the hook 112, and the ground detection module 12 is configured to determine a ground state of the target catenary according to a voltage difference between the first end 12a and the second end 12 b.

The hook part in the ground clamp can be made of metal or other conductive materials, and can be in an S shape, a C shape or an M shape and the like for being hooked and fixed on a ground steel rail. The actual shape of the hook portion may correspond to the actual shape of the ground rail so that the hook portion can be in contact with the ground rail for secure and reliable grounding.

The fixed end in the grounding wire clamp can be made of metal or other conductive materials, and the fixed end and the hook part can be insulated from each other through the insulating gasket. For example, referring to fig. 1, a fixing end and a hook portion are respectively disposed at both sides of an insulating gasket a, in the drawing, the fixing end is disposed at an upper surface of the insulating gasket, and the hook portion is disposed at a lower surface of the insulating gasket. Besides, the fixed end and the hook part can be mutually insulated through an insulating coating or other structures.

In the present device, the fixed end and the hook are both directly grounded, but the node at which the fixed end and the hook are grounded is different. For example, the fixed end is grounded through a first ground rail, and the hook portion is grounded through a second ground rail. Therefore, the series flow of charges in the fixed end and the hook part can be avoided, and the accuracy of the grounding state of the contact net obtained by detection is ensured.

The grounding detection module is used for determining the grounding state of the target overhead line system according to the voltage difference between the first end and the second end. Specifically, the ground detection module may detect a voltage of the first terminal and a voltage of the second terminal, respectively, and determine a voltage difference between the first terminal and the second terminal by calculating a difference. Or, the ground detection module may include a resistor connected between the first terminal and the second terminal, and the voltage difference between the first terminal and the second terminal is calculated according to a resistance value of the resistor by detecting a current flowing through the resistor. The above example is only used for illustrating the present solution, and the voltage difference between the first terminal and the second terminal may be determined in other ways during the practical application process.

Because the first end is connected with the contact net electricity through the stiff end, consequently, the voltage that the contact net was taken can be represented to the voltage that the first end was taken. In addition, since the second end is grounded through the hook portion, the voltage at the second end can be used as a ground standard voltage. If the contact system is firmly and stably grounded through the fixed end, the voltage carried by the first end is basically the same as that carried by the second end, namely, the voltage difference between the first end and the second end is very small. If the contact net is not firmly and stably grounded, the voltage difference between the first end and the second end is larger. For example, if the catenary is not powered down, the voltage difference may be greater than 10 kV. If the catenary is powered off but induced electricity is present, the voltage difference can be greater than 60V and less than or equal to 10 kV. If the catenary is firmly and stably grounded, the voltage difference may be less than or equal to 60V.

Based on the device for detecting the grounding state of the overhead line system provided in the above embodiment, preferably, as shown in fig. 2, the grounding detection module 12 includes:

a standard resistor 123;

the standard voltage detection submodule 124 is electrically connected with two ends of the standard resistor 123 and is used for detecting a standard voltage difference value of the two ends of the standard resistor 123;

a target voltage detection submodule 125, wherein one end 125a of the target voltage detection submodule 125 is electrically connected to the fixed end 111 and the other end 125b of the target voltage detection submodule 125 is electrically connected to the hook portion 112, and is configured to detect a target voltage difference between the fixed end 111 and the hook portion 112;

and the voltage comparator 126 is configured to determine a grounding state of the target overhead line system according to the standard voltage difference and the target voltage difference.

It should be noted that, in this embodiment and the drawings, one end 125a of the target voltage detection submodule may be the first end 12a of the ground detection module in the above embodiments, and the other end 125b of the target voltage detection submodule may be the second end 12b of the ground detection module in the above embodiments.

In the scheme, the resistance value of the standard resistor can be determined according to actual requirements, and the standard resistor can be a resistor with a fixed resistance value, or a resistor box with a variable resistance value, a resistor and the like. The standard voltage detection submodule is used for detecting a voltage difference between two ends of the standard resistor, and the voltage difference can also be called as a voltage drop of the standard resistor. The measured standard voltage difference value can be compared with a target voltage difference value in a voltage comparator to be used as a standard for judging whether the contact net is firmly and stably grounded. Specifically, the standard resistor may be a resistor having a resistance of 50m Ω.

The two ends of the target voltage detection submodule are respectively electrically connected with the hook part and the fixed end of the grounding wire clamp, and the hook part is grounded and the contact net is grounded through the fixed end, so that the target voltage difference value detected by the target voltage detection submodule can represent the voltage carried by the contact net. Wherein, influenced by factors such as the length and the material of wire, magnetic field environment, there is certain voltage difference often between hook portion and the stiff end. The voltage difference may be due to wire resistance, magnetic field environment, and the like. Therefore, the voltage difference between the hook part and the fixed end of the grounding wire clamp is within a reasonable range, and the fact that the contact net is firmly and stably grounded can be determined.

And the voltage comparator is used for comparing the target voltage difference value with the standard voltage difference value, and further determining the grounding state of the overhead line system according to the comparison result. For example, when the target voltage difference is less than or equal to the standard voltage difference, it is determined that the grounding state of the overhead line system is "grounded", and when the target voltage difference is greater than the standard voltage difference, it is determined that the grounding state of the overhead line system is "ungrounded". Specifically, the voltage comparator judges the voltage drop between the measured connecting resistor and the standard resistor, and can judge through a voltage division principle of a series resistor in a circuit theory, so as to determine the difference value between the standard voltage and the target voltage.

In addition, the grounding detection module can also comprise a power supply module which is used for providing working electric energy for each electronic component in the grounding detection module. Specifically, the power supply module may be a disposable battery, a rechargeable battery, or the like.

Through the scheme that provides of this application, can quantify the voltage that the contact net was taken to according to the target voltage difference and the standard voltage difference that detect confirm the ground connection state of contact net. And the resistance of the standard resistor can be set according to actual requirements, so that the standard resistor is suitable for various contact networks, flexible to use and wide in application.

Based on the apparatus for detecting the grounding state of the overhead line system provided in the above embodiment, preferably, as shown in fig. 3, the grounding detection module 12 includes a grounding alarm submodule 127, and the grounding alarm submodule 127 is configured to alarm when the grounding state of the target overhead line system meets a preset condition.

The grounding alarm submodule can be connected with the voltage comparator and used for acquiring the grounding state of a target contact network from the voltage comparator, and the grounding alarm submodule can alarm according to the grounding state of the contact network. For example, the grounding alarm sub-module may include an alarm lamp, and the alarm lamp may be a Light Emitting Diode (LED). The warning lamp can contain one or more single-color lamp beads and also can contain a plurality of lamp beads with different colors. The warning lamp can give out light for warning through different colors, flashing frequency, brightness and the like. For example, when the grounding state of the target contact network is "ungrounded", the warning lamp emits red light with high brightness and high flicker frequency to warn the maintainer that the current contact network is ungrounded. When the ground connection state of target contact net is "grounded", the warning lamp sends green, the luminance is low, the light that often brightens for instruct the current contact net of maintainer to ground connection, can carry out follow-up work.

In addition, the grounding alarm submodule can also comprise a buzzer and other sound generating devices, and is used for giving an alarm to the maintainers through sound. The buzzer can give an alarm through different volume, rhythm, tone and the like. For example, when the target contact net is in an ungrounded state, the buzzer sounds with a large volume, a long tone and a high tone to realize alarm. When the grounding state of the target contact net is grounded, the buzzer prompts the maintainer to perform subsequent work with low volume, short tone and low tone.

Through the scheme that this application provided, can report an emergency and ask for help or increased vigilance the maintainer through the ground connection warning submodule piece after confirming the contact net ground connection state, make the maintainer learn whether current contact net is safe fast, can carry out subsequent work whether. The grounding alarm submodule can alarm in different modes such as sound, light and the like, so that maintainers can be warned through various senses.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 4, the device further includes:

the insulation support rod 13 and the conductive hook 14 arranged at one end of the insulation support rod 13;

the conductive hook 14 is electrically connected to the fixed end 111 through a conductive wire (shown by a dotted line in fig. 4), and the conductive hook 14 is used for hooking the target contact system, so that the target contact system is grounded through the conductive hook 14 and the fixed end 111.

Insulating support rod in this scheme plays supporting role, and is more excellent, can choose telescopic bracing piece for use, and perhaps, this bracing piece can contain a plurality of sub-bracing pieces that can the end to end, changes the holistic length of bracing piece through the quantity that changes the sub-bracing piece that meets. The plurality of sub-support rods can be stably and firmly connected through mechanical structures such as sleeves, the connection mode can be various, and limitation is not required in the example.

Preferably, the grounding detection module can be fixed on the insulating support rod, as shown in fig. 4, so that the maintenance personnel can conveniently carry and use the grounding detection module. The fixation may specifically be achieved by gluing or other mechanical structures.

Preferably, the length of bracing piece can be according to the high definite of contact net distance ground, for example, the length of bracing piece can be for the difference of the height of contact net distance ground and the height of an adult's body to the maintainer can conveniently hold the bracing piece and hang conductive hook on target contact net. The bracing piece that is too short is inconvenient for the maintainer to manually hook the contact net, and the bracing piece that is too long is inconvenient to carry, uses inflexibly. Consequently, the device that this application provided can the maintainer manual operation of being convenient for, uses in a flexible way, and the security is high, portable.

The conductive hook arranged at one end of the insulating support rod can be made of metal, and the shape of the conductive hook can be determined according to the actual shape of a contact net, so that a maintainer can hook the contact net manually. In addition, in order to further improve the security, the one end that electrically conductive couple was kept away from to insulating bracing piece can also be provided with insulating handle for further improve the holistic insulating nature of bracing piece, guarantee maintainer's safety.

In the device that this application provided, electrically conductive couple passes through the wire and is connected with the stiff end electricity, grips the one end that electrically conductive couple is kept away from to insulating bracing piece when the maintainer, hangs electrically conductive couple behind the target contact net, and the target contact net is connected with electrically conductive couple electricity, and then the target contact net passes through electrically conductive couple, the wire that links to each other with electrically conductive couple, stiff end ground connection. When firm in connection is reliable between contact net, electrically conductive couple, wire, stiff end and the ground rail, the target contact net firmly reliably ground promptly, alright in order to overhaul work afterwards.

Through the device that this application provided, can make things convenient for the maintainer to hang electrically conductive couple on the contact net manually to make the contact net pass through electrically conductive couple, wire and stiff end ground connection. The operation process is simple and convenient, and is favorable for maintainers to overhaul the contact network in a safe environment.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 5, the device further includes:

the electroscope module 15 is arranged on the insulating support rod 13, and the electroscope module 15 is used for checking whether the target contact net is electrified or not.

In this embodiment, the electroscope module can be used to detect whether an object is electrified, and the electroscope module can include a contact electroscope and/or a non-contact electroscope. Wherein, whether contact electroscope needs to judge electrified through touching the object surface that awaits measuring with the electroscope, and non-contact electroscope then need not touch the object that awaits measuring, just need be close to the object that awaits measuring with the electroscope and just can judge electrified.

Taking a non-contact electroscope as an example, a detector can hold the insulating support rod first, and an electroscope on the insulating support rod is manually controlled to be close to a target contact net, so that the non-contact electroscope detects whether the target contact net is electrified or not. The electricity testing module can preliminarily judge whether the target contact net is powered off or not, and for the target contact net which is not powered off, the on-off state of the target contact net can be known through non-contact detection of the electricity testing module, so that detection personnel can conveniently carry out subsequent operation according to the on-off state of the target contact net.

In the practical application process, for a target contact system which is powered off, induced electricity is often generated due to environmental factors such as surrounding electromagnetic fields, and the voltage of the induced electricity is usually less than 10 kV. Although the induced electricity generally can not cause bodily injury to the detection personnel, the induced electricity can also be detected by the electricity testing module, thereby influencing the judgment of the detection personnel on whether the target overhead contact system is powered off or not.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 6, the electroscope module 15 includes:

the voltage detection submodule 151 is used for detecting the voltage value of the target overhead line system;

and the voltage identification submodule 152 is configured to determine the charging type of the target overhead line system according to the voltage value of the target overhead line system.

In this embodiment, the voltage detection submodule in the electroscopic module is used for detecting the voltage value brought by the target overhead contact system. And the voltage identification submodule determines the type of the electrification of the target contact network according to the detected voltage value of the target contact network. Specifically, the voltage identification submodule can determine the electrification type of the target overhead line system according to a preset voltage value. For example, when the voltage value of the target contact network is detected to be smaller than 60V, it can be determined that the target contact network is powered off, induction electricity is not provided, and the maintainer can continue to perform subsequent work. When the voltage value of the target contact net is detected to be greater than or equal to 60V and less than or equal to 10kV, the type of the charged target contact net can be determined to be an induced electricity type, namely the target contact net is powered off but has induced electricity, and at the moment, the safety measures can be enhanced to continue subsequent work. When the voltage value of the target contact net is detected to be greater than 10kV, the type of the charged target contact net can be determined to be the working electricity type, namely the target contact net is not powered off, and at the moment, the target contact net needs to be powered off firstly and then continues to perform subsequent work.

In addition, the electricity testing module can also comprise a power supply module which is used for providing working electric energy for each electronic component in the electricity testing module. Specifically, the power supply module may be a disposable battery, a rechargeable battery, or the like.

Through this application embodiment scheme, can detect the voltage value that the target contact net takes through the module of testing electricity, and then confirm the electrified type of target contact net according to the voltage value that detects and obtain. The target contact net electrification type can be determined, so that the detection personnel can determine the operation steps to be executed subsequently, the safety of the detection personnel is guaranteed, and the risk is reduced.

Based on the device for detecting the grounding state of the overhead line system provided in the above embodiment, preferably, as shown in fig. 7, the electricity testing module 15 includes a voltage alarm sub-module 153, and the voltage alarm sub-module 153 is configured to alarm according to the charging type of the target overhead line system.

The voltage alarm submodule in the embodiment of the application can comprise light emitting modules such as a warning lamp and the like, and is used for giving an alarm by emitting light. The voltage alarm sub-module may also include a buzzer for sounding an alarm. Preferably, the voltage alarm submodule can alarm according to the determined charged type of the target contact network.

For example, when detecting that the voltage of the target contact net is less than 60V, the warning level is low, green light can be emitted through the warning lamp, short sound is emitted through the buzzer to prompt the maintainer, so that the maintainer can know that the voltage of the target contact net is small, and follow-up maintenance work can be continued.

When detecting target contact guipure response electricity, the warning rank is the middling, can send orange yellow light through the warning light, is interrupted through bee calling organ and sends a plurality of short sound suggestion maintainers, makes the maintainer learn the current area response electricity of target contact net, though the response electricity often can not cause harm to personal safety, in order to guarantee safety, the maintainer should strengthen the safeguard measure and carry out follow-up maintenance operation again.

When detecting that the target contact net is not cut off power supply, when the voltage of taking is operating voltage, the warning rank is senior, can send red light through the warning light, continuously sends long-tone suggestion maintainer through bee calling organ, makes the maintainer learn current target contact net area high-voltage electricity, just can overhaul the operation after the outage.

Through the scheme that this embodiment provided, can report an emergency and ask for help or increased vigilance according to the electrified type of target contact net, make the maintainer learn current contact net electrified type through multiple forms such as sound, luminescence. The device that this application provided can show the electrified type of target contact net fast directly perceivedly to the operation that the maintainer decided to carry out afterwards, thereby guarantee maintenance in-process personal safety.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 8, the electroscope module 15 is a non-contact electroscope module, and the electroscope module 15 is fixed at one end of the insulating support rod 13 through a metal wire hoop 151.

In the device that this embodiment provided, the metal wire hoop with the inside intercommunication of non-contact electroscope module for judge whether the object that awaits measuring is electrified when being close to the object that awaits measuring. Preferably, the metal wire hoop may be in a "C" shape and wound around one end of the insulating support rod. On the one hand, the metal wire hoop can be used for detecting whether the target contact net is electrified, and on the other hand, the metal wire hoop wound on the insulating support rod can stably fix the electroscopic module on the insulating support rod. In addition, the metal wire hoop is attached to the insulating support rod, so that the probability that the metal wire hoop is broken by external force can be reduced, and the service life of the electricity testing module is prolonged.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 9, the insulating support rod 13 is connected with the conductive hook 14 through the detachable connection portion 16, and the electricity testing module 15 is arranged at one end of the insulating support rod 13 close to the conductive hook 14.

The detachable connecting portion can be in a sleeve form, for example, an outer tube is arranged on the conductive hook, an inner tube is arranged at the tail end of the insulating supporting rod, and the conductive hook and the insulating supporting rod can be mechanically connected through sleeving. Wherein, the outer tube that sets up on the conductive hook can be elastic insulating material, like rubber, utilizes the elasticity of rubber outer tube to fix conductive hook at the end of insulating support rod when cup jointing. On the one hand, this kind of structure enables electrically conductive couple to fix at insulating support rod end, and on the other hand, the electric charge that the elastic insulation outer tube can further avoid in the contact net flows to the bracing piece, further improves personnel's safety among the operation process.

In the practical application process, the maintainer can hold the insulating support rod which is not connected with the conductive hook firstly, the electricity testing module at one end of the insulating support rod is controlled to be close to a target contact net, and whether the target contact net is electrified or not is detected firstly. Under the condition that the target contact net is determined to be powered off and the current voltage is safe, the conductive hook is connected with the tail end of the insulating support rod, one end of the insulating support rod is held, and the conductive hook at the other end is hung on the target contact net, so that the target contact net is communicated with the fixed end which is grounded in advance through the conductive hook, the lead and the fixed end, and the grounding of the target contact net is achieved. After the hook is completed, the grounding state of the target contact net is determined according to the grounding detection module, and after the target contact net is firmly and reliably grounded, subsequent overhaul operation can be carried out.

Based on the device for detecting the grounding state of the overhead line system provided by the above embodiment, preferably, as shown in fig. 10, the detachable connection portion includes a threaded sleeve 161.

In order to further improve the operation convenience and simplify the operation process, the detachable connecting part can be a threaded sleeve. Specifically, a threaded outer pipe can be arranged on the conductive hook, and the inner surface of the threaded outer pipe is provided with annular threads. The tail end of the insulating support rod can be provided with a threaded inner tube, and the outer surface of the threaded inner tube is provided with annular threads which are matched with the annular threads in the appearance of the threads of the conductive hook.

In the practical application process, the maintainer only needs to butt joint the threaded outer pipe of conductive hook with the threaded inner pipe at the tail end of the insulating support rod, and the conductive hook can be connected with the insulating support rod through rotation. When the conductive hook needs to be taken down, the conductive hook can be taken down by rotating. The process of installation and dismantlement is simple swift, moreover, through threaded sleeve pipe connection reliable and stable, is difficult to appear not hard up the condition that drops, improves the security of overhauing the in-process.

The device provided based on the above embodiment may further include a wireless communication module. The wireless communication module can realize wireless communication and is used for assisting a maintainer in overhauling a target contact net or assisting a plurality of maintainers in communicating with each other. The wireless communication module can be connected with the grounding detection module and/or the electricity testing module in a communication mode, when the dangerous conditions that a target contact net is not firmly and reliably grounded and the target contact net has high voltage electricity and the like are detected, a warning signal is sent, and the warning signal can be used for controlling the electronic equipment which is connected in advance in a communication mode. For example, the maintainer can wear electronic equipment such as wireless earphone, bracelet, and above-mentioned warning signal can control these electronic equipment and remind the maintainer through modes such as vibration, sound production, luminescence, tells that the current target contact net of maintainer is electrified dangerous, can not directly overhaul.

In addition, the wireless communication module can also send other control signals to perform auxiliary control on the power-on and power-off of the contact network. The power-on and power-off of the contact network can be manually controlled by a worker in a control room, and in the embodiment, the wireless communication module can also send a signal to prompt the worker in the control room to power off the target contact network. For example, the maintainer grips the insulating support pole, tests the electricity through the electricity testing module that insulating support pole one end set up to the target contact net, tests the electricity module and detects the current not outage of target contact net. Above-mentioned wireless communication module can with test electric module communication connection, when testing electric module and detecting that the target contact net is not cut off the power supply, wireless communication module can confirm current position earlier, confirms the target contact net that does not cut off the power supply again, then sends the outage suggestion to the control room. This outage suggestion can contain current position information, also can contain the sign of target contact net to make the staff of control room accurately learn fast and need carry out the target contact net of outage, thereby carry out the outage fast and high-efficiently, so that the maintainer can carry out follow-up maintenance operation.

The following provides a usage flow of the device provided by the present application: firstly, picking the conductive hook, and carrying out target contact net electricity testing by independently using an electricity testing module of the insulating support rod; after the electricity testing is finished, confirming whether the target contact net is charged and the charging type according to the acousto-optic display of the electricity testing module; after the power failure of the target contact net is confirmed, connecting the conductive hook with the insulating support rod, connecting the ground wire clamp with the steel rail, and then connecting the conductive hook with the target contact net in a hooking manner; and opening the grounding detection module at the tail end of the insulating support rod, confirming the grounding effect of the grounding wire clamp, and displaying the qualified result so as to carry out target contact network maintenance work.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or the portions contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), and includes a plurality of instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a detect device of contact net ground state which characterized in that includes:

2. The apparatus of claim 1, wherein the ground detection module comprises:

a standard resistance;

3. The apparatus of claim 2, wherein the grounding detection module comprises a grounding alarm sub-module for alarming when a grounding state of the target catenary satisfies a preset condition.

4. The apparatus of any of claims 1 to 3, further comprising:

5. The apparatus of claim 4, further comprising:

6. The apparatus of claim 5, wherein the electroscopic module comprises:

7. The apparatus of claim 6, wherein the electroscopy module comprises a voltage alarm sub-module, and the voltage alarm sub-module is used for alarming according to the target contact net electrification type.

8. The apparatus of claim 5, wherein said electroscope module is a non-contact electroscope module, said electroscope module being secured to one end of said insulating support rod by a wire ferrule.

9. The device of claim 8, wherein the insulating support rod is connected with the conductive hook through a detachable connecting part, and the electroscopic module is arranged at one end of the insulating support rod close to the conductive hook.

10. The apparatus of claim 9, wherein the detachable connection comprises a threaded sleeve.