CN219739317U - Connecting member between ground connection and external connection in electric power pipe gallery - Google Patents
Connecting member between ground connection and external connection in electric power pipe gallery Download PDFInfo
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- CN219739317U CN219739317U CN202321081929.2U CN202321081929U CN219739317U CN 219739317 U CN219739317 U CN 219739317U CN 202321081929 U CN202321081929 U CN 202321081929U CN 219739317 U CN219739317 U CN 219739317U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 128
- 239000010959 steel Substances 0.000 claims abstract description 128
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 5
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a connecting component between the grounding of an electric power pipe gallery and the external connection, which comprises L-shaped galvanized round steel, linear galvanized flat steel and Z-shaped galvanized flat steel; l-shaped galvanized round steel is arranged in the mounting hole of the electric power pipe gallery in a penetrating manner, one end of the L-shaped galvanized round steel, which is arranged on the outer side of the electric power pipe gallery, is fixedly connected with the external ground, one end of the L-shaped galvanized round steel, which is arranged on the inner side of the electric power pipe gallery, is fixedly welded with the I-shaped galvanized flat steel, the other end of the I-shaped galvanized flat steel is connected with the Z-shaped galvanized flat steel through a bolt, and the other end of the Z-shaped galvanized flat steel is fixedly welded with the internal ground. The advantages are that: the L-shaped galvanized round steel, the in-line galvanized flat steel and the Z-shaped galvanized flat steel are matched, so that the connection between the internal grounding and the external grounding is ensured, and the effect of current transmission is ensured; through the mounting hole from taking on the electric power piping lane, accomplish connecting element's installation, use the mounting hole flexibility higher, do not need additionally to set up connecting element hole.
Description
Technical field:
the utility model relates to the technical field of electric power systems, in particular to a connecting member between an electric power pipe gallery grounding and an external connection.
The background technology is as follows:
the utility model discloses an underground utility tunnel is the utility tunnel of underground city pipeline, build a tunnel space in the city underground promptly, collect various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage in an organic whole, be equipped with special access hole, hoist and mount mouth and monitoring system, implement unified planning, unified design, unified construction and management, be the "lifeline" of the important infrastructure of guarantee city operation, wherein the pipe lane that is used for laying in the cable support specially is called electric power pipe gallery in a large number, the pipe lane that electric power pipe gallery adopted every festival length is 2.8 meters, adopt the socket connection mode between the pipe lane, set up the mounting hole every festival pipe lane lateral wall, during on-the-spot installation, the steel pin is inserted to the mounting hole of two sections electric power pipe galleries in front and back, connect the steel pin of both sides with the chain, after the chain is tightened up, two adjacent festival pipe galleries are mutually socket fixed, after the installation, take off the steel pin from the mounting hole.
In order to reduce the accident hazard caused by later-stage electric leakage of the cable laid in the electric power pipe gallery, flat steel internal connection is arranged in the electric power pipe gallery, the flat steel internal connection is arranged along the length direction of the electric power pipe gallery and is welded and fixed with a cable support for supporting the cable, and the internal connection is connected with external connection outside the electric power pipe gallery through a connecting member so as to lead the current of the cable leakage to the ground.
However, at present, the prefabricated electric power pipe gallery has the technical problems that connection between the internal ground and the external ground is difficult due to uncertain factors in the design stage, for example: according to the design requirement of industry, the electric power pipe gallery is provided with a connecting member at intervals of not less than 50 meters, the specific position of the connecting member is required to be determined on site according to the size of an inspection well and the length of the electric power pipe gallery, so that the special holes of the connecting member prefabricated by the electric power pipe gallery are used, the matched connecting member is mostly made of flat steel by using a bending tool according to the site condition, the two ends of the flat steel are respectively welded and fixed on an internal grounding surface and an external grounding surface according to the industry specification, and the connecting member cannot be processed, produced, manufactured and installed according to standard components in the current mode, so that the working procedure is complex and the labor hour consumption is high; poor installation quality, large influence factors by field conditions and incapability of being flexibly opened according to requirements when the grounding resistance is tested in the later stage.
The utility model comprises the following steps:
the utility model aims to provide a connecting member between an internal ground and an external ground in an electric power pipe gallery.
The utility model is implemented by the following technical scheme: the connecting component between the grounding part and the external connection part in the electric power pipe gallery comprises L-shaped galvanized round steel, linear galvanized flat steel and Z-shaped galvanized flat steel;
the L-shaped galvanized round steel is arranged in the mounting hole of the electric power pipe gallery in a penetrating manner, one end of the L-shaped galvanized round steel, which is arranged at the outer side of the electric power pipe gallery, is fixedly connected with the external ground through the L-shaped galvanized flat steel, the L-shaped galvanized round steel is arranged at one end of the inner side of the electric power pipe gallery, the L-shaped galvanized flat steel is fixedly welded with the I-shaped galvanized flat steel, the other end of the I-shaped galvanized flat steel is connected with the Z-shaped galvanized flat steel through a bolt, and the other end of the Z-shaped galvanized flat steel is fixedly welded with the internal ground.
Furthermore, the L-shaped galvanized round steel, the linear galvanized flat steel and the L-shaped galvanized flat steel are respectively welded in double sides, and the welding length is not less than 6 times of the diameter of the L-shaped galvanized round steel.
Further, the overlap joint length L1 between the linear galvanized flat steel and the Z-shaped galvanized flat steel is more than or equal to 3 times the width of the linear galvanized flat steel.
Further, three-sided welding is adopted between the Z-shaped galvanized flat steel and the internal grounding, and the lap joint length L2 is 2 times the width of the Z-shaped galvanized flat steel.
The utility model has the advantages that: the L-shaped galvanized round steel, the in-line galvanized flat steel, the Z-shaped galvanized flat steel and the L-shaped galvanized flat steel are matched, so that the connection between the internal grounding and the external grounding is ensured, and the effect of current transmission is ensured;
the installation of the connecting component is completed through the self-contained installation hole on the electric power pipe gallery, the flexibility of using the installation hole is higher, the additional arrangement of the connecting component hole is not needed, and for the prefabricated electric power pipe gallery, the time and the manufacturing cost of the prefabricated connecting component hole are saved;
the detachable connection between the I-shaped galvanized flat steel and the Z-shaped galvanized flat steel has the function of detaching the I-shaped galvanized flat steel and the Z-shaped galvanized flat steel in later period, is convenient for measuring the grounding resistance between the grounding electrode rod and the electrode rod, is used for judging and analyzing whether welding is qualified or not, has the problems of welding missing and welding missing, can timely find out the problems, timely maintain, reduces subsequent electric leakage and avoids the problem of running safety.
Description of the drawings:
in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the connection between the utility tunnel, cable support and the internal ground of the present utility model;
FIG. 2 is a side view of the connection between the utility tunnel, cable support and the ground connection of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2A;
FIG. 4 is a side view of the connection between the utility tunnel and the utility tunnel of the present utility model;
FIG. 5 is an enlarged view of part of B in FIG. 4;
FIG. 6 is a top view of the utility model;
in the figure: the electric power pipe ditch 1, the electric power pipe gallery 2, the mounting hole 3, the L-shaped galvanized round steel 4, the in-line galvanized flat steel 5, the Z-shaped galvanized flat steel 6, the external grounding 7, the bolt 8, the internal grounding 9, the cable bracket 10, the electrode rod 11 and the L-shaped galvanized flat steel 12.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 6, the two adjacent electric power pipe lanes 2 are connected through the mounting holes 3 on the two electric power pipe lanes 2 when being mounted, when the two electric power pipe lanes 2 are mounted, all the mounting holes 3 are normally required to be plugged by cement mortar, and the distance between the mounting holes 3 is consistent with the length of each electric power pipe lane 2 and is 2.8 meters, so in the embodiment, the mounting holes 3 can be used as the special holes of the connecting members, only the corresponding mounting holes 3 are required to be selected as the special holes of the connecting members according to actual requirements in the construction process, the distance between the two adjacent special holes of the connecting members meets the design requirement of 50 meters, and the rest unused mounting holes 3 are plugged by cement mortar, when the mounting holes 3 are adopted as the special holes of the connecting members, the connecting members need special designs, namely:
the galvanized steel sheet comprises L-shaped galvanized round steel 4, a linear galvanized flat steel 5 and a Z-shaped galvanized flat steel 6, wherein the L-shaped galvanized round steel 4, the linear galvanized flat steel 5 and the Z-shaped galvanized flat steel 6 are Q235B steel, the diameter of the L-shaped galvanized round steel 4 is 20mm, and the width and thickness of the galvanized flat steel are 50mm and 5mm.
An L-shaped galvanized round steel 4 is penetrated in the mounting hole 3 of the electric power pipe gallery 2, one end of the L-shaped galvanized round steel 4 arranged at the outer side of the electric power pipe gallery 2 is fixedly connected with the external grounding 7 through an L-shaped galvanized flat steel 12, one end of the L-shaped galvanized round steel 4 arranged at the inner side of the electric power pipe gallery 2 is fixedly welded with the I-shaped galvanized flat steel 5, the other end of the I-shaped galvanized flat steel 5 is connected with the Z-shaped galvanized flat steel 6 through a bolt 8, the detachable connection between the I-shaped galvanized flat steel 5 and the Z-shaped galvanized flat steel 6 has the function of disassembling the I-shaped galvanized flat steel 5 and the Z-shaped galvanized flat steel 6 in later period, the grounding resistance between the internal grounding 9 and the electrode rod 11 is convenient to measure, and the L-shaped galvanized round steel is used for judging whether welding is qualified or not, and the problems of welding leakage and welding lack exist, the problem can be found timely, maintenance is timely carried out, the subsequent electric leakage is reduced, the problem of operation safety is avoided, the other end of the Z-shaped galvanized flat steel 6 is welded and fixed with the internal grounding 9, the internal grounding 9 is fixedly connected with the cable support 10 inside the electric power pipe gallery 2, as the conventional diameter of the installation hole 3 of the electric power pipe gallery 2 is 40mm, only round steel with the diameter of 20mm in the electric power industry can pass through the installation hole 3, the sectional area of the galvanized round steel with the diameter of 20mm is larger than 50mm of the sectional area of the galvanized flat steel with the diameter of 5mm, the L-shaped galvanized round steel 4 enters the electric power pipe gallery 2 through the installation hole 3, and the L-shaped galvanized round steel is connected with the internal grounding 9 through the I-shaped galvanized flat steel 5 and the Z-shaped galvanized flat steel 6; through the cooperation of L shape galvanized round steel 4, in-line galvanized flat steel 5, Z shape galvanized flat steel 6 and L shape galvanized flat steel 12, guaranteed the connection between internal connection 9 and external connection 7, guaranteed the effect of electric current transmission simultaneously, do not need additionally to set up connecting element dedicated hole, for prefabricated electric power piping lane 2, saved the time and the manufacturing cost of prefabricated connecting element dedicated hole, through the mounting hole 3 from taking on the electric power piping lane 2, accomplish connecting element's installation, use mounting hole 3 flexibility higher.
The L-shaped galvanized round steel 4, the linear galvanized flat steel 5 and the L-shaped galvanized flat steel 12 are respectively welded on two sides, and the length of the welding seam is not less than 6 times of the diameter of the L-shaped galvanized round steel 4; the overlap joint length L1 is greater than or equal to 3 times the width of the I-shaped galvanized flat steel 5 between the I-shaped galvanized flat steel 5 and the Z-shaped galvanized flat steel 6, namely when the width of the I-shaped galvanized flat steel 5 is 50mm, the overlap joint length L1 is 150mm, so as to ensure the contact area, reserve foot space for later-stage safe operation, three-face welding is arranged between the Z-shaped galvanized flat steel 6 and the internal grounding 9, the overlap joint length L2 is 2 times the width of the Z-shaped galvanized flat steel, and the cross section area can be effectively ensured to be not less than 100 square millimeters through the arrangement of the overlap joint length and the welding mode, so that the effect of current transmission is ensured.
The specific operation of this example;
after the electric power pipe rack 2 is installed in the electric power pipe rack 1 and the plurality of sections of electric power pipe racks 2 are installed, L-shaped galvanized round steel 4 with proper size is needed according to the interval between the electric power pipe rack 2 and the external ground 7,
the external grounding 7 is fixed on the electric power pipe gallery 1 through an electrode rod 11, the electrode rod 11 is inserted into a soil layer of the electric power pipe gallery 1, the L-shaped galvanized round steel 4 is arranged in a corresponding mounting hole 3 in a penetrating manner at a proper position of the electric power pipe gallery 2, one end of the L-shaped galvanized round steel 4 is welded and fixed with the external grounding 7 through the L-shaped galvanized flat steel 12 at the outer side of the electric power pipe gallery 2, the Z-shaped galvanized flat steel 6 is welded and fixed with the internal grounding 9 at the inner side of the electric power pipe gallery 2, a bolt 8 between the L-shaped galvanized round steel 4 and the linear galvanized flat steel 5 which are arranged in the electric power pipe gallery 2 is connected, and the other end of the linear galvanized flat steel 5 is fixed with one end of the Z-shaped galvanized flat steel 6 which is far away from the internal grounding 9 through the bolt 8, so that the installation of the device is completed;
when the connecting member is detected in the later period, the in-line galvanized flat steel 5 and the Z-shaped galvanized flat steel 6 are required to be disassembled, so that the grounding resistance can be conveniently measured to determine whether the grounding resistance is within the qualified range of 4Ω.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. The connecting component between the grounding part and the external connection part in the electric power pipe gallery is characterized by comprising L-shaped galvanized round steel, in-line galvanized flat steel and Z-shaped galvanized flat steel;
the L-shaped galvanized round steel is arranged in the mounting hole of the electric power pipe gallery in a penetrating manner, one end of the L-shaped galvanized round steel, which is arranged at the outer side of the electric power pipe gallery, is fixedly connected with the external ground through the L-shaped galvanized flat steel, the L-shaped galvanized round steel is arranged at one end of the inner side of the electric power pipe gallery, the L-shaped galvanized flat steel is fixedly welded with the I-shaped galvanized flat steel, the other end of the I-shaped galvanized flat steel is connected with the Z-shaped galvanized flat steel through a bolt, and the other end of the Z-shaped galvanized flat steel is fixedly welded with the internal ground.
2. The connecting member between the power piping lane grounding and the external connection according to claim 1, wherein the L-shaped galvanized round steel, the in-line galvanized flat steel, and the L-shaped galvanized flat steel are double-sided welded, respectively, and a weld length is not less than 6 times the L-shaped galvanized round steel diameter.
3. The connection member between an electrical power piping lane grounding connection and an external connection according to claim 2, wherein a lap length L1 between the in-line galvanized flat steel and the Z-shaped galvanized flat steel is 3 times or more the width of the in-line galvanized flat steel.
4. A connection member between an electrical utility tunnel ground connection and an external ground connection as claimed in claim 3, wherein the Z-shaped galvanized flat steel is three-sided welded with the internal ground connection, and the overlap length L2 is 2 times the Z-shaped galvanized flat steel width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321081929.2U CN219739317U (en) | 2023-05-06 | 2023-05-06 | Connecting member between ground connection and external connection in electric power pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321081929.2U CN219739317U (en) | 2023-05-06 | 2023-05-06 | Connecting member between ground connection and external connection in electric power pipe gallery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739317U true CN219739317U (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321081929.2U Active CN219739317U (en) | 2023-05-06 | 2023-05-06 | Connecting member between ground connection and external connection in electric power pipe gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739317U (en) |
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2023
- 2023-05-06 CN CN202321081929.2U patent/CN219739317U/en active Active
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