1. A DC grounding electrode element with a state monitoring function is characterized in that: the power supply device comprises a shell, a first end cover, a second end cover and a feed assembly;

the shell is enclosed into an accommodating channel, the first end cover is arranged at one end of the accommodating channel in a covering mode, the second end cover is arranged at the other end of the accommodating channel in a covering mode, the feed assembly is arranged in the accommodating channel, the first end cover is provided with a first through hole and a second through hole, and one end of the feed assembly extends out of the first through hole;

a current sensor is sleeved on the feed assembly, a lead of the current sensor extends out of the second through hole, and the current sensor is used for collecting direct current grounding electrode grounding current borne by the electrode element;

the accommodating channel is filled with an active material, and the active material is used for slowing down corrosion of the feed assembly and reducing temperature rise of the electrode element.

2. The direct current earth electrode element with condition monitoring function according to claim 1, wherein: the feed assembly comprises at least one feed unit and a feed cable, the feed unit is accommodated in the accommodating channel, and the outer side wall of the feed unit is abutted against the inner peripheral wall of the accommodating channel;

the feed cable is arranged in the accommodating channel, one end of the feed cable extends out of the first through hole, the feed unit is connected with the feed cable, and the current sensor is sleeved on the feed cable.

3. The direct current earth electrode element with condition monitoring function according to claim 2, wherein: the feed unit comprises a feed rod and a fixed support, the fixed support is accommodated in the accommodating channel, a fixed hole is formed in the fixed support, the feed rod penetrates through the fixed hole, and a drainage cable of the feed rod is connected with the feed cable.

4. The direct current earth electrode element with a state monitoring function according to claim 3, characterized in that: the fixed support comprises a plurality of connecting rods and a mounting circular truncated cone, the connecting rods are arranged at intervals around the circumferential direction of the mounting circular truncated cone, one end of each connecting rod is connected with the outer circumferential wall of the mounting circular truncated cone, and the other end of each connecting rod abuts against the inner circumferential wall of the accommodating channel;

the mounting round platform is provided with the fixing hole, and the feed rod penetrates through the fixing hole.

5. The direct current earth electrode element with condition monitoring function according to claim 1, wherein: still include temperature sensor, temperature sensor sets up in the holding passageway, just temperature sensor is close to the periphery wall setting of feed stick, the via hole has been seted up on the first end cover, temperature sensor's one end by the via hole stretches out.

6. The direct current earth electrode element with condition monitoring function according to claim 1, wherein: the exhaust pipe is arranged in the accommodating channel, an air outlet hole is formed in the first end cover, and one end of the exhaust pipe is inserted into the air outlet hole;

the exhaust pipe is characterized in that a plurality of exhaust holes are formed in the peripheral wall of the exhaust pipe and are arranged at intervals along the axial direction of the exhaust pipe, and the exhaust holes extend along the radial direction of the exhaust pipe and penetrate through the peripheral wall of the exhaust pipe.

7. The direct current earth electrode element with condition monitoring function according to claim 6, wherein: the filter layer wraps the outer peripheral wall of the exhaust pipe and is used for filtering the active materials, and the active materials are prevented from entering the exhaust pipe through the exhaust holes.

8. The direct current earth electrode element with condition monitoring function according to claim 1, wherein: the active material is calcined petroleum coke.

9. The direct current earth electrode element with a state monitoring function according to claim 3, characterized in that: the length of the feed rod is greater than or equal to a first preset value and less than or equal to a second preset value.

10. The direct current earth electrode element with a state monitoring function according to claim 3, characterized in that: and the joint of the drainage cable and the feed cable is wrapped by a sealing layer.

Background

At present, a high-voltage direct-current grounding electrode is an underground concealed project, is difficult to detect after a fault occurs, and can be generally checked only through field excavation. Because the floor area and the size of the high-voltage direct-current grounding electrode are large, the whole electrode is generally divided into 6-8 electrode sections, and each electrode section is formed by connecting hundreds of electrode elements in parallel. The existing high-voltage direct-current grounding electrode online monitoring system can only monitor the total current (sum of shunt current of a diversion cable corresponding to the total current) of each electrode section, and cannot detect the operation state of each electrode element.

However, when a certain electrode element or several electrode elements have a fault, even if the fault may exist underground through diversion of the diversion cable, the specific location cannot be determined to which electrode element, so that the whole electrode section needs to be excavated and searched, which results in large workload and low working efficiency.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a direct current grounding electrode element with a state monitoring function, which has the advantages of solving the technical problems of large workload and low working efficiency, and simultaneously monitoring the running state of the electrode element in real time to ensure the safe running of a high-voltage direct current grounding electrode.

The above object of the present invention is achieved by the following technical solutions: a direct current grounding electrode element with a state monitoring function comprises a shell, a first end cover, a second end cover and a feed assembly; the shell is enclosed into an accommodating channel, the first end cover is arranged at one end of the accommodating channel in a covering mode, the second end cover is arranged at the other end of the accommodating channel in a covering mode, the feed assembly is arranged in the accommodating channel, the first end cover is provided with a first through hole and a second through hole, and one end of the feed assembly extends out of the first through hole; a current sensor is sleeved on the feed assembly, a lead of the current sensor extends out of the second through hole, and the current sensor is used for collecting direct current grounding electrode grounding current borne by the electrode element; the accommodating channel is filled with an active material, and the active material is used for slowing down corrosion of the feed assembly and reducing temperature rise of the electrode element.

Preferably, the dc ground electrode element with a condition monitoring function provided by the present invention includes at least one feeding unit and a feeding cable, the feeding unit is accommodated in the accommodating channel, and an outer sidewall of the feeding unit abuts against an inner peripheral wall of the accommodating channel; the feed cable is arranged in the accommodating channel, one end of the feed cable extends out of the first through hole, the feed unit is connected with the feed cable, and the current sensor is sleeved on the feed cable.

Preferably, the feeding unit of the dc ground electrode element with the state monitoring function provided by the present invention includes a feeding rod and a fixing bracket, the fixing bracket is accommodated in the accommodating channel, the fixing bracket is provided with a fixing hole, the feeding rod is inserted into the fixing hole, and a drainage cable of the feeding rod is connected to the feeding cable.

Preferably, the direct current grounding electrode element with the state monitoring function provided by the invention comprises a plurality of connecting rods and an installation circular truncated cone, wherein the connecting rods are arranged at intervals around the circumferential direction of the installation circular truncated cone, one end of each connecting rod is connected with the outer circumferential wall of the installation circular truncated cone, and the other end of each connecting rod abuts against the inner circumferential wall of the accommodating channel; the mounting round platform is provided with the fixing hole, and the feed rod penetrates through the fixing hole.

Preferably, the direct current grounding electrode element with the state monitoring function further comprises a temperature sensor, the temperature sensor is arranged in the accommodating channel and is arranged close to the outer peripheral wall of the feed rod, a through hole is formed in the first end cover, and one end of the temperature sensor extends out of the through hole.

Preferably, the dc ground electrode element with the state monitoring function further includes at least one exhaust pipe, the exhaust pipe is disposed in the accommodating channel, the first end cap is provided with an air outlet, and one end of the exhaust pipe is inserted into the air outlet; the exhaust pipe is characterized in that a plurality of exhaust holes are formed in the peripheral wall of the exhaust pipe and are arranged at intervals along the axial direction of the exhaust pipe, and the exhaust holes extend along the radial direction of the exhaust pipe and penetrate through the peripheral wall of the exhaust pipe.

Preferably, in the direct current grounding electrode element with the state monitoring function provided by the invention, the outer peripheral wall of the exhaust pipe is wrapped by the filter layer, and the filter layer is used for filtering the active material and preventing the active material from entering the exhaust pipe through the exhaust hole.

Preferably, the active material of the direct current grounding electrode element with the condition monitoring function provided by the invention is calcined petroleum coke.

Preferably, in the dc ground electrode element with a condition monitoring function provided by the present invention, the length of the feeding rod is greater than or equal to a first predetermined value and less than or equal to a second predetermined value.

Preferably, in the direct current ground electrode element with the condition monitoring function provided by the invention, the joint of the drainage cable and the feed cable is wrapped by the sealing layer.

In conclusion, the beneficial technical effects of the invention are as follows: the direct current grounding electrode element with the state monitoring function comprises a shell, a first end cover, a second end cover and a feed assembly; the shell is enclosed into an accommodating channel, a first end cover is arranged at one end of the accommodating channel, a second end cover is arranged at the other end of the accommodating channel, the feed assembly is arranged in the accommodating channel, a first through hole and a second through hole are formed in the first end cover, and one end of the feed assembly extends out of the first through hole; the feed assembly is sleeved with a current sensor, a lead of the current sensor extends out of the second through hole, and the current sensor is used for collecting direct current grounding electrode grounding current borne by the electrode element; the accommodating channel is filled with active materials which are used for slowing down the corrosion of the feed assembly and reducing the temperature rise of the electrode element; due to the arrangement, on one hand, in the direct-current grounding construction process, the workload is reduced, the construction period is shortened, and the construction efficiency is improved; on the other hand, the running state of the electrode element is monitored in real time, and the safe running of the high-voltage direct-current grounding electrode is guaranteed.

Drawings

Fig. 1 is a schematic view of an overall structure of a dc ground electrode element with a state monitoring function according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an overall structure of a dc ground electrode element with a state monitoring function according to an embodiment of the present invention.

In the figure, 1, an electrode element; 10. a housing; 20. a first end cap; 30. a second end cap; 40. a feeding component; 401. a feed rod; 4011. a drainage cable; 402. fixing a bracket; 4021. a connecting rod; 4022. a circular truncated cone is installed; 403. a feeder cable; 50. a current sensor; 501. a wire; 502. fixing the rod; 60. an active material; 70. a temperature sensor; 80. an exhaust pipe; 801. and (4) exhausting holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, a dc ground electrode element 1 with a status monitoring function disclosed in the present invention includes a housing 10, wherein the housing 10 is enclosed to form an accommodating channel; illustratively, the housing 10 may be tubular such that the housing 10 may enclose the receiving channel. Further, the cross section of the accommodating channel may be in the shape of a circle, a rectangle, or the like, and the cross section of the accommodating channel is not limited in this embodiment; the central axis of the receiving channel may be parallel to the central axis of the housing 10, and in some implementations, the central axis of the receiving channel may be co-linear with the central axis of the housing 10.

In order to prevent the electrode element 1 from being damaged by being embedded underground for a long time, the housing 10 may be mainly made of a metal material such as copper or iron.

In order to close both ends of the receiving channel, a first end cap 20 is disposed at one end of the receiving channel, and a second end cap 30 is disposed at the other end of the receiving channel, for example, the second end cap 30 may be connected to the housing 10 by a bolt connection or a snap connection, the second end cap 30 may also be connected to the housing 10 by a welding method, and of course, the second end cap 30 may also be integrally formed with the housing 10 by a casting method.

The dc ground electrode element 1 with the status monitoring function provided in this embodiment further includes a feeding component 40, the feeding component 40 is disposed in the accommodating channel, the first end cap 20 and the second end cap 30 are disposed opposite to each other, the first end cap 20 is provided with a first through hole and a second through hole, one end of the feeding component 40 extends from the first through hole to the outside of the accommodating channel, so that the extending end of the feeding component 40 is connected to the diversion system of the dc ground electrode.

Wherein, the feed assembly 40 is sleeved with a current sensor 50, a lead 501 of the current sensor 50 extends out of the second through hole, and the current sensor 50 is used for collecting a direct current grounding electrode grounding current born by the electrode element 1; by sleeving the current sensor 50 on the feeding assembly 40, the operation state of the electrode element 1 can be monitored in real time, and the safe operation of the direct current grounding electrode can be guaranteed.

Specifically, the current sensor 50 is sleeved on the feeding assembly 40, and the wire 501 of the current sensor 50 extends out of the second through hole to the outside of the accommodating channel, so as to be connected with the monitoring device.

For example, the current sensor 50 may collect the dc grounding current assumed by the electrode element 1 through electromagnetic induction; of course, the current sensor 50 may collect the dc grounding current of the electrode element 1 in other ways.

In order to improve the stability of the current sensor 50, at least one fixing rod 502 is disposed on the outer side wall of the current sensor 50, the fixing rod 502 extends along the radial direction of the accommodating channel, one end of the fixing rod 502 is connected with the outer side wall of the current sensor 50, and the other end of the fixing rod 502 abuts against the inner peripheral wall of the accommodating channel.

In the embodiment, the accommodating channel is filled with the active material 60, and the active material 60 fills the accommodating channel and is tamped and compacted; by arranging the active material 60 in the accommodating channel, corrosion of the power feeding component 40 is slowed down, and the service life of the power feeding component 40 is prolonged.

Further, the active material 60 is calcined petroleum coke. Of course, the active material 60 may be made of other materials, so as to slow down the corrosion of the feeding assembly 40 and reduce the temperature rise of the electrode element 1.

With continued reference to fig. 1 and 2, in the present embodiment, the feeding assembly 40 includes at least one feeding unit and a feeding cable 403, the feeding unit is accommodated in the accommodating channel, and an outer sidewall of the feeding unit abuts against an inner sidewall of the accommodating channel; the outer side wall of the feed unit abuts against the inner peripheral wall of the accommodating channel, so that the friction force between the feed unit and the inner peripheral wall of the accommodating channel is improved, and the feed unit is prevented from sliding along the central axis direction of the accommodating channel.

And determining the using number of the feed units according to the specific parameters, the transportation conditions and the construction mode of the direct current grounding electrode project. In an implementation manner in which the feeding assembly 40 includes a plurality of feeding units, the plurality of feeding units are disposed at intervals along the central axis direction of the accommodating passage.

In the above embodiment, the feeding cable 403 is disposed in the receiving channel, and one end of the feeding cable 403 extends from the first through hole to the outside of the receiving channel so as to be connected to the current guiding system of the dc ground electrode.

Specifically, the feeding cable 403 extends along the central axis direction of the accommodating channel, the feeding unit is connected to the feeding cable 403, and the current sensor 50 is sleeved on the feeding cable 403.

Further, the feeding unit includes a feeding rod 401 and a fixing support 402, the fixing support 402 is accommodated in the accommodating channel, a fixing hole is formed in the fixing support 402, the feeding rod 401 is inserted into the fixing hole, and a drainage cable 4011 of the feeding rod 401 is connected with the feeding cable 403; the fixing bracket 402 is used to fix the feeding rod 401, and during the use process, the feeding rod 401 is prevented from moving.

Specifically, the outer side wall of the fixing bracket 402 abuts against the inner peripheral wall of the accommodating channel, thereby preventing the fixing bracket 402 from sliding along the accommodating channel; the feed rod 401 is inserted into the fixing hole, and thus the fixing portion fixes the feed rod 401. The central axis of the feed rod 401 is parallel to the central axis of the accommodating channel, and in some realizable manners, the central axis of the feed rod 401 and the central axis of the accommodating channel are arranged in a collinear manner.

Further, the length of the feed rod 401 is equal to or greater than a first predetermined value and equal to or less than a second predetermined value.

Wherein the first predetermined value may range from 0.8m to 1.2m, and the second predetermined value may range from 1.3m to 1.7 m; illustratively, the first predetermined value may be 1m and the second predetermined value may be 1.5m, that is, the length of the feed rod 401 is 1m or more and 1.5m or less.

In this embodiment, the joint between the drain cable 4011 and the feed cable 403 is wrapped with a sealing layer; by providing the sealing layer, electric leakage during use is avoided, and thus, the safety of use of the electrode element 1 is improved. The sealing layer can be made of epoxy resin materials, and of course, other materials can be adopted, and only the insulating sealing can be realized.

With continued reference to fig. 1 and fig. 2, in this embodiment, the fixing bracket 402 includes a plurality of connecting rods 4021 and a mounting circular truncated cone 4022, the plurality of connecting rods 4021 are arranged at intervals around the circumference of the mounting circular truncated cone 4022, one end of each connecting rod 4021 is connected to the outer circumferential wall of the mounting circular truncated cone 4022, and the other end of each connecting rod 4021 abuts against the inner circumferential wall of the receiving channel; a fixing hole is formed in the mounting circular truncated cone 4022, and the feed rod 401 penetrates through the fixing hole; by providing a plurality of the connecting rods 4021, the firmness of the connection of the fixing bracket 402 to the housing 10 and the stability of the fixing bracket 402 are improved.

Specifically, the axis of installation round platform 4022 and the axis of fixed orifices all are parallel with the axis of holding passageway, and the one end of a plurality of connecting rods 4021 all is connected with the periphery wall of installation round platform 4022, and a plurality of connecting rods 4021 all extend along the radial outside of installation round platform 4022, and in the use, the one end that a plurality of connecting rods 4021 deviate from installation round platform 4022 all supports and pushes up on the internal perisporium of holding passageway.

Further, the dc ground electrode element 1 with the state monitoring function provided in this embodiment further includes a temperature sensor 70, the temperature sensor 70 is disposed in the accommodating channel, the temperature sensor 70 is disposed near the outer peripheral wall of the feeding rod 401, the first end cap 20 is provided with a via hole, and one end of the temperature sensor 70 extends out of the accommodating channel through the via hole; the temperature sensor 70 is used for collecting the temperature signal of the electrode element 1 in the operation process of the direct current grounding electrode, and the operation state of the electrode element 1 is conveniently monitored in real time by arranging the temperature sensor 70, so that the safe operation of the direct current grounding electrode is guaranteed.

Wherein, temperature sensor 70 extends along the axis direction of holding the passageway, and temperature sensor 70's one end has the via hole to stretch out to the outside of holding the passageway, is convenient for be connected with monitoring facilities.

In order to accurately monitor the temperature of the electrode member 1, a temperature sensor 70 is disposed near the outer peripheral wall of the feed rod 401.

Further, the dc ground electrode element 1 with the state monitoring function provided in this embodiment further includes at least one exhaust pipe 80, the exhaust pipe 80 is disposed in the accommodating channel, the first end cap 20 is provided with an air outlet, and one end of the exhaust pipe 80 is inserted into the air outlet; by providing the exhaust pipe 80, the gas generated by heating and electrolysis during the operation of the electrode member 1 is exhausted.

Under the condition that the length of the electrode element 1 is long and vertical arrangement is adopted, or the electrode element 1 is arranged in places with abundant underground water such as seaside and pond side, at least one exhaust pipe 80 needs to be arranged in the accommodating channel, the exhaust pipe 80 extends along the central axis direction of the accommodating channel, one end of the exhaust pipe 80 is inserted into the air outlet, and gas entering the exhaust pipe 80 is discharged from the air outlet.

In the above embodiment, the outer peripheral wall of the exhaust pipe 80 is provided with a plurality of exhaust holes 801, the exhaust holes 801 are arranged at intervals along the axial direction of the exhaust pipe 80, and the exhaust gas extends along the radial direction of the exhaust pipe 80 and penetrates through the outer peripheral wall of the exhaust pipe 80; by arranging the plurality of exhaust holes 801, gas generated by heating and electrolysis in the operation process of the electrode element 1 enters the exhaust pipe 80 through the exhaust holes 801 and is then exhausted out of the accommodating cavity through the air outlet.

Further, in this embodiment, the outer peripheral wall of the exhaust pipe 80 is wrapped with a filter layer for filtering the active material 60, so as to prevent the active material 60 from entering the exhaust pipe 80 through the exhaust hole 801; by wrapping the filter layer on the outer peripheral wall of the exhaust pipe 80, the active material 60 is prevented from entering the exhaust pipe 80 through the exhaust hole 801 to block the exhaust pipe 80, thereby improving the service life of the exhaust pipe 80.

Wherein the diameter of the pores in the filter layer is smaller than the diameter of the particles in the active material 60, thereby preventing the active material 60 from passing through the filter layer into the exhaust pipe 80.

The dc ground electrode element 1 with a state monitoring function provided in this embodiment includes a housing 10, a first end cap 20, a second end cap 30, and a power feeding assembly 40; the housing 10 is enclosed to form an accommodating channel, the first end cap 20 is covered at one end of the accommodating channel, the second end cap 30 is covered at the other end of the accommodating channel, the feeding assembly 40 is arranged in the accommodating channel, the first end cap 20 is provided with a first through hole and a second through hole, and one end of the feeding assembly 40 extends out of the first through hole; the feed assembly 40 is sleeved with a current sensor 50, a lead 501 of the current sensor 50 extends out of the second through hole, and the current sensor 50 is used for collecting a direct current grounding electrode grounding current borne by the electrode element 1; the accommodating channel is filled with an active material 60, and the active material 60 is used for slowing down the corrosion of the feed assembly 40 and reducing the temperature rise of the electrode element 1; due to the arrangement, on one hand, in the direct-current grounding construction process, the workload is reduced, the construction period is shortened, and the construction efficiency is improved; on the other hand, the running state of the electrode element 1 is monitored in real time, and the safe running of the high-voltage direct-current grounding electrode is guaranteed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.