CN210269710U - Control device of corrosion diagnosis system of multi-channel transformer substation grounding grid - Google Patents
Control device of corrosion diagnosis system of multi-channel transformer substation grounding grid Download PDFInfo
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- CN210269710U CN210269710U CN201920982184.4U CN201920982184U CN210269710U CN 210269710 U CN210269710 U CN 210269710U CN 201920982184 U CN201920982184 U CN 201920982184U CN 210269710 U CN210269710 U CN 210269710U
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Abstract
The utility model discloses a control device of a corrosion diagnosis system of a multi-channel transformer substation grounding grid, which mainly comprises a solid conductor, a hollow tubular conductor and an inclined tube; solid conductors with mutually matched external dimensions are respectively welded at the upper end and the lower end of the hollow tubular conductor; the inclined tube is welded on the outer side wall of the hollow tubular conductor and is communicated with the hollow tubular conductor, and the end part of the inclined tube is inclined downwards; the end of the inclined tube is detachably connected with an end cap; copper wires distributed spirally are arranged between the inclined tube and the hollow tubular conductor connecting channel, one end of each copper wire is welded with an electric contact sheet arranged on the inner wall of the hollow tubular conductor, and the other end of each copper wire extends to the end part of the inclined tube to be fixedly connected with a wire fixing cavity in the end cap. The utility model discloses can reduce the influence of contact impedance to actual measurement result, make measuring result more accurate.
Description
Technical Field
The utility model belongs to the technical field of the substation equipment, concretely relates to multichannel transformer substation's ground net corrodes diagnostic system controlling means.
Background
The grounding device is a hidden project and is deeply buried underground, the operation condition of the grounding device cannot be visually checked, and most of the ground of a working channel of a transformer substation and the ground of an equipment area are hardened, so that the grounding device occupies about 70 percent of the total area. In most substations, the ground is also hardened. In the high-voltage equipment area, in order to ensure the safety of workers, a safety channel special for the walking of operators is built, so that the direct observation or excavation observation of the corrosion and damage conditions of the grounding device becomes difficult.
The measurement method of the magnetic field method is as follows: and injecting sinusoidal excitation current with certain frequency into the conductor, measuring the magnetic induction intensity distribution condition generated by the excitation current around the conductor, and determining the position of the conductor according to the distribution characteristics and rules.
When the grounding grid is connected with the pilot frequency current source, the grounding grid is generally connected between the grounding grid and the current source through the electric connecting device, but the part of the grounding grid exposed outside can be corroded, or is protected by insulation and inconvenient to connect, and the part buried underground is difficult to judge the position and has higher impedance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough that exists among the prior art, provide a multichannel transformer substation's ground net corrodes diagnostic control system device, the device has the characteristics of being convenient for insert the electric current source.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor, a hollow tubular conductor and an inclined tube; solid conductors with mutually matched external dimensions are respectively welded at the upper end and the lower end of the hollow tubular conductor; the inclined tube is welded on the outer side wall of the hollow tubular conductor and is communicated with the hollow tubular conductor, and the end part of the inclined tube is inclined downwards; the end of the inclined tube is detachably connected with an end cap; copper wires distributed spirally are arranged between the inclined tube and the hollow tubular conductor connecting channel, one end of each copper wire is welded with an electric contact sheet arranged on the inner wall of the hollow tubular conductor, and the other end of each copper wire extends to the end part of the inclined tube to be fixedly connected with a wire fixing cavity in the end cap.
Solid conductors are symmetrically welded at two ends of the hollow tubular conductor for current excitation. The inclined tube is arranged obliquely downwards, so that the inclined tube cannot penetrate into the hollow tubular conductor tube even if raining, further corrosion cannot occur in the hollow tubular conductor tube, and good electrical connectivity is maintained. The end cap can be detachably connected to the end of the inclined tube, the end cap can play a role in closing and protecting the inclined tube, and the inclined tube can be opened only when being detected. The copper wires are spirally distributed in the hollow tubular conductor cavity and the tube cavity of the inclined tube; one end of the copper wire is in contact with the electric contact sheet in a fitting manner, and the electric contact sheet are welded and fixed, so that the contact resistance is low, the current generated by the current source can be conducted with low loss, and the electric contact sheet is electrically connected with the solid conductor; and copper conductor one end is fixed with the fixed chamber of wire in the end cap, conveniently can expose the copper conductor through rotating the end cap and outwards pulling out when detecting to press from both sides the wire clamp on the copper conductor, conveniently realize inserting the frequency conversion excitation current into solid conductor and then enter into the ground net.
When the excitation current flows through the conductor branch, the maximum value of the magnetic induction intensity in the horizontal direction exists at the position right above the corresponding branch, and then the peak value position of the magnetic induction intensity in the horizontal direction on the ground surface of the conductor is detected, so that the position of the corresponding conductor branch can be determined. The electromagnetic environment of the transformer substation mainly takes power frequency as a main part, so that the interference of a background magnetic field of the transformer substation is eliminated, the measurement precision of the magnetic field is improved, a pilot frequency current source for measuring the magnetic field of the transformer substation is adopted, measurement modules responding to the magnetic field with different frequencies are adopted aiming at the generation of currents with different frequencies, the measurement of the magnetic field of the transformer substation is realized, a magnetic field measurement data acquisition module is developed for uploading measured magnetic field data to an upper computer to analyze and display, and data transmission, storage and display are realized.
The utility model discloses explain further, the solid conductor of hollow tubular conductor upper end links to each other with substation equipment, and the solid conductor and the ground net of lower extreme link to each other.
The utility model discloses explain further, the end cap on be equipped with threaded connection pipe, be equipped with on the pipe chute with threaded connection pipe complex threaded connection portion. The end cap and the inclined tube are connected through the threaded connection tube and the threaded connection part, so that the end cap and the inclined tube are convenient to detach and can ensure certain sealing performance.
The utility model discloses explain further, threaded connection's root block is connected with the sealing washer, the end cap with through sealing washer sealing connection between the pipe chute. The sealing ring is arranged to ensure good sealing performance.
The utility model discloses explain further, copper conductor passes through wire clipper electric connection with outside frequency conversion excitation current. The wire clamp is convenient to clamp on a copper wire, so that the variable-frequency excitation current is conveniently connected into the solid conductor and then into the grounding grid.
The utility model discloses explain further, the pipe chute is apart from ground height to be: 300-400 mm. Because of the low height, the utility model is convenient for operation.
A multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor, a hollow tubular conductor and an inclined tube; the hollow tubular conductor is welded on one side surface of the solid conductor, and the upper end and the lower end of the hollow tubular conductor are sealed; the inclined tube is welded on the outer side wall of the hollow tubular conductor and is communicated with the hollow tubular conductor, and the end part of the inclined tube is inclined downwards; the end of the inclined tube is detachably connected with an end cap; copper wires distributed spirally are arranged between the inclined tube and the hollow tubular conductor connecting channel, one end of each copper wire is welded with an electric contact sheet arranged on the inner wall of the hollow tubular conductor, and the other end of each copper wire extends to the end part of the inclined tube to be fixedly connected with a wire fixing cavity in the end cap.
The solid conductor can be energized by current through the hollow tubular conductor by welding the hollow tubular conductor to one side of the solid conductor and sealing both ends of the hollow tubular conductor. The inclined tube is arranged obliquely downwards, so that the inclined tube cannot penetrate into the hollow tubular conductor tube even if raining, further corrosion cannot occur in the hollow tubular conductor tube, and good electrical connectivity is maintained. The end cap can be detachably connected to the end of the inclined tube, the end cap can play a role in closing and protecting the inclined tube, and the inclined tube can be opened only when being detected. The copper wires are spirally distributed in the hollow tubular conductor cavity and the tube cavity of the inclined tube; one end of the copper wire is in contact with the electric contact sheet in a fitting manner, and the copper wire and the electric contact sheet are welded and fixed, so that the contact resistance is low, and the current generated by the current source can be conducted with low loss; and copper conductor one end is fixed with the fixed chamber of wire in the end cap, conveniently can expose the copper conductor through rotating the end cap and outwards pulling out when detecting to press from both sides the wire clamp on the copper conductor, conveniently realize inserting the frequency conversion excitation current into solid conductor and then enter into the ground net.
When the excitation current flows through the conductor branch, the maximum value of the magnetic induction intensity in the horizontal direction exists at the position right above the corresponding branch, and then the peak value position of the magnetic induction intensity in the horizontal direction on the ground surface of the conductor is detected, so that the position of the corresponding conductor branch can be determined. The electromagnetic environment of the transformer substation mainly takes power frequency as a main part, so that the interference of a background magnetic field of the transformer substation is eliminated, the measurement precision of the magnetic field is improved, a pilot frequency current source for measuring the magnetic field of the transformer substation is adopted, measurement modules responding to the magnetic field with different frequencies are adopted aiming at the generation of currents with different frequencies, the measurement of the magnetic field of the transformer substation is realized, a magnetic field measurement data acquisition module is developed for uploading measured magnetic field data to an upper computer to analyze and display, and data transmission, storage and display are realized.
The utility model discloses the beneficial effect who has as follows:
1. the utility model discloses a hollow body has been set up to extend the pipe chute of a downward sloping at the outer wall of hollow tube, be equipped with the copper line that is used for the electricity to connect in the pipe chute, and can seal through the end cap, the end cap is only opened when measuring, consequently can guarantee splendid conductivity, reduces the influence of contact impedance to actual measurement result, makes measuring result more accurate.
2. The utility model has the advantages of simple structure, economical and practical, and the convenience reforms transform current equipment, consequently has good marketing ability.
3. The utility model discloses an in the time of actual operation, operation process is simple, and is fast, consequently can practice thrift the time that uses in the whole testing process.
Drawings
Fig. 1 is a schematic external structural view of an embodiment of the present invention;
fig. 2 is a schematic view of a partial internal structure of another embodiment of the present invention;
FIG. 3 is a schematic structural view of the end cap of the present invention;
fig. 4 is a schematic view of an external structure of another embodiment of the present invention;
wherein, each icon and the corresponding part name are as follows:
1-solid conductor, 2-hollow tubular conductor, 3-inclined tube, 31-threaded connection part, 4-end cap, 41-threaded connection pipe, 42-sealing ring, 401-wire fixing cavity, 5-electric contact sheet and 6-copper wire.
Detailed Description
The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.
Example 1:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the upper end and the lower end of the hollow tubular conductor 2 are respectively welded with solid conductors 1 with mutually matched external dimensions; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 300 mm.
Example 2:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the upper end and the lower end of the hollow tubular conductor 2 are respectively welded with solid conductors 1 with mutually matched external dimensions; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 350 mm.
The end cap 4 is provided with a threaded connecting pipe 41, and the inclined pipe 3 is provided with a threaded connecting part 31 matched with the threaded connecting pipe 41.
Example 3:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the upper end and the lower end of the hollow tubular conductor 2 are respectively welded with solid conductors 1 with mutually matched external dimensions; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 400 mm.
The end cap 4 is provided with a threaded connecting pipe 41, and the inclined pipe 3 is provided with a threaded connecting part 31 matched with the threaded connecting pipe 41.
The root of the threaded connecting pipe 41 is connected with a sealing ring 42 in a clamping way, and the end cap 4 is connected with the inclined pipe 3 in a sealing way through the sealing ring 42.
Example 4:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the hollow tubular conductor 2 is welded on one side surface of the solid conductor 1, and the upper end and the lower end of the hollow tubular conductor 2 are sealed; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 320 mm.
Example 5:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the hollow tubular conductor 2 is welded on one side surface of the solid conductor 1, and the upper end and the lower end of the hollow tubular conductor 2 are sealed; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 380 mm.
The end cap 4 is provided with a threaded connecting pipe 41, and the inclined pipe 3 is provided with a threaded connecting part 31 matched with the threaded connecting pipe 41.
Example 6:
a multi-channel transformer substation grounding grid corrosion diagnosis system control device mainly comprises a solid conductor 1, a hollow tubular conductor 2 and an inclined tube 3; the hollow tubular conductor 2 is welded on one side surface of the solid conductor 1, and the upper end and the lower end of the hollow tubular conductor 2 are sealed; the inclined tube 3 is welded on the outer side wall of the hollow tubular conductor 2 and is communicated with the hollow tubular conductor 2, and the end part of the inclined tube 3 is inclined downwards; an end cap 4 is detachably connected to the end part of the inclined tube 3; copper wires 6 distributed spirally are arranged between the connecting channels of the inclined tube 3 and the hollow tubular conductor 2, one end of each copper wire 6 is welded with an electric contact sheet 5 arranged on the inner wall of the hollow tubular conductor 2, and the other end of each copper wire 6 extends to the end part of the inclined tube 3 and is fixedly connected with a wire fixing cavity 401 in the end cap 4.
The upper end solid conductor is connected with the substation equipment, and the lower end solid conductor is connected with the grounding grid.
The copper wire 6 is electrically connected with external variable frequency excitation current through a wire clamp.
The height of the inclined tube 3 from the ground is as follows: 400 mm.
The end cap 4 is provided with a threaded connecting pipe 41, and the inclined pipe 3 is provided with a threaded connecting part 31 matched with the threaded connecting pipe 41.
The root of the threaded connecting pipe 41 is connected with a sealing ring 42 in a clamping way, and the end cap 4 is connected with the inclined pipe 3 in a sealing way through the sealing ring 42.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A control device of a corrosion diagnosis system of a multi-channel transformer substation grounding grid is characterized in that: mainly comprises a solid conductor (1), a hollow tubular conductor (2) and an inclined tube (3);
the upper end and the lower end of the hollow tubular conductor (2) are respectively welded with solid conductors (1) with mutually matched external dimensions;
the inclined tube (3) is welded on the outer side wall of the hollow tubular conductor (2) and is communicated with the hollow tubular conductor (2), and the end part of the inclined tube (3) is inclined downwards; the end part of the inclined tube (3) is detachably connected with an end cap (4);
copper wires (6) which are distributed spirally are arranged between the connecting channels of the inclined tube (3) and the hollow tubular conductor (2), one end of each copper wire (6) is welded with an electric contact sheet (5) arranged on the inner wall of the hollow tubular conductor (2), and the other end of each copper wire (6) extends to the end part of the inclined tube (3) and is fixedly connected with a wire fixing cavity (401) in the end cap (4).
2. The control device of the multi-channel substation grounding grid corrosion diagnosis system of claim 1, characterized in that: the solid conductor at the upper end of the hollow tubular conductor (2) is connected with substation equipment, and the solid conductor at the lower end of the hollow tubular conductor (2) is connected with a grounding grid.
3. The control device of the multi-channel substation grounding grid corrosion diagnosis system of claim 1, characterized in that: the end cap (4) is provided with a threaded connecting pipe (41), and the inclined pipe (3) is provided with a threaded connecting part (31) matched with the threaded connecting pipe (41).
4. The control device of the multi-channel substation grounding grid corrosion diagnosis system of claim 3, characterized in that: the root part of the threaded connecting pipe (41) is connected with a sealing ring (42) in a clamping mode, and the end cap (4) is connected with the inclined pipe (3) in a sealing mode through the sealing ring (42).
5. The control device of the multi-channel substation grounding grid corrosion diagnosis system of claim 1, characterized in that: the copper lead (6) is electrically connected with external variable frequency excitation current through the wire clamp.
6. The control device of the multi-channel substation grounding grid corrosion diagnosis system of claim 1, characterized in that: the height of the inclined tube (3) from the ground is as follows: 300-400 mm.
7. A control device of a corrosion diagnosis system of a multi-channel transformer substation grounding grid is characterized in that: mainly comprises a solid conductor (1), a hollow tubular conductor (2) and an inclined tube (3);
the hollow tubular conductor (2) is welded on one side surface of the solid conductor (1), and the upper end and the lower end of the hollow tubular conductor (2) are sealed;
the inclined tube (3) is welded on the outer side wall of the hollow tubular conductor (2) and is communicated with the hollow tubular conductor (2), and the end part of the inclined tube (3) is inclined downwards; the end part of the inclined tube (3) is detachably connected with an end cap (4);
copper wires (6) which are distributed spirally are arranged between the connecting channels of the inclined tube (3) and the hollow tubular conductor (2), one end of each copper wire (6) is welded with an electric contact sheet (5) arranged on the inner wall of the hollow tubular conductor (2), and the other end of each copper wire (6) extends to the end part of the inclined tube (3) and is fixedly connected with a wire fixing cavity (401) in the end cap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982184.4U CN210269710U (en) | 2019-06-27 | 2019-06-27 | Control device of corrosion diagnosis system of multi-channel transformer substation grounding grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982184.4U CN210269710U (en) | 2019-06-27 | 2019-06-27 | Control device of corrosion diagnosis system of multi-channel transformer substation grounding grid |
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| Publication Number | Publication Date |
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| CN210269710U true CN210269710U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920982184.4U Active CN210269710U (en) | 2019-06-27 | 2019-06-27 | Control device of corrosion diagnosis system of multi-channel transformer substation grounding grid |
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| CN (1) | CN210269710U (en) |
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