CN213242831U - Nuclear power plant pipeline bridging grounding clamp - Google Patents
Nuclear power plant pipeline bridging grounding clamp Download PDFInfo
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- CN213242831U CN213242831U CN202022075671.8U CN202022075671U CN213242831U CN 213242831 U CN213242831 U CN 213242831U CN 202022075671 U CN202022075671 U CN 202022075671U CN 213242831 U CN213242831 U CN 213242831U
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- grounding clamp
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Abstract
The invention relates to the technical field of nuclear power plant equipment maintenance, and particularly discloses a nuclear power plant pipeline jumper grounding clamp. A nuclear power plant pipeline bridging grounding clamp comprises a left grounding clamp sheet, a right grounding clamp sheet and a connecting shaft, wherein the left grounding clamp sheet and the right grounding clamp sheet are of two semi-cylindrical barrel structures, and one ends of the left grounding clamp sheet and the right grounding clamp sheet are movably connected through the connecting shaft, so that the left grounding clamp sheet and the right grounding clamp sheet can be opened or closed in a relatively rotating manner; the other ends of the left piece and the right piece of the grounding clamp are detachably and fixedly connected. The nuclear power plant pipeline jumper grounding clamp can be smoothly added to the existing hydrogen pipeline jumper, is simple to construct, cannot damage the material performance of a hydrogen pipeline, and can quickly add a jumper to a process pipeline.
Description
Technical Field
The invention belongs to the technical field of nuclear power plant equipment maintenance, and particularly relates to a nuclear power plant pipeline jumper grounding clamp.
Background
The pipelines of the 3 and 4 hydrogen station systems in the Qin and II factories adopt stainless steel pipes with the pipe diameter of 14mm, and the 4 th part of the industrial pipeline is specified according to the pressure pipeline: manufacturing and installation (GB/T20801.4-2006) requirements: the pipeline with the electrostatic grounding requirement has good electric conduction among all sections. When the resistance value between each pair of flanges or threaded joints is greater than 0.03 omega, a lead is required to be bridged.
For hydrogen system pipelines, to prevent hydrogen explosion, the pipelines need to have good electrostatic requirements. When jumper wires are needed in other process pipelines, a wiring base is welded at a joint. If the hydrogen pipeline is welded, local welding stress can be caused, particularly if the stainless steel pipe with the thickness of 14mm is welded at the joint of the stainless steel pipe, and the deformation of the pipeline can be caused. In addition, for the hydrogen pipeline which is already put into operation, if no jumper is added in the early stage, the requirement of jumper is required in the later maintenance, a traditional welding mode is used for adding a wiring point on the process pipeline, the hydrogen pipeline needs to be stopped, and helium is used for replacing the inner gas from the pipeline. This construction is time consuming and labor intensive.
Disclosure of Invention
The invention aims to provide a nuclear power plant pipeline jumper grounding clamp, which solves the problem that the jumper of the hydrogen pipeline of the existing nuclear power plant is increased, and realizes the purpose of quickly adding the jumper to a process pipeline joint on the basis of not damaging the material performance of the hydrogen pipeline.
The technical scheme of the invention is as follows: a nuclear power plant pipeline bridging grounding clamp comprises a left grounding clamp sheet, a right grounding clamp sheet and a connecting shaft, wherein the left grounding clamp sheet and the right grounding clamp sheet are of two semi-cylindrical barrel structures, and one ends of the left grounding clamp sheet and the right grounding clamp sheet are movably connected through the connecting shaft, so that the left grounding clamp sheet and the right grounding clamp sheet can be opened or closed in a relatively rotating manner; the other ends of the left piece and the right piece of the grounding clamp are detachably and fixedly connected.
After the left grounding clip sheet and the right grounding clip sheet are matched and attached, the inner wall forms a complete cylindrical side wall structure.
The end part of one side of the left piece of the grounding clamp is provided with a cylindrical section with a central hole, and the end part of one side of the right piece of the grounding clamp is provided with two cylindrical sections with central holes which are separated from each other; the distance between the two cylindrical sections of the right piece of the grounding clamp is greater than that of the cylindrical section of the left piece of the grounding clamp; when the left grounding clip piece is attached to one side of the right grounding clip piece, the cylindrical section on the left grounding clip piece is coaxial with the central hole of the cylindrical section on the right grounding clip piece, and the left grounding clip piece and the right grounding clip piece are connected in a rotating mode along the connecting shaft by penetrating through the cylindrical section through the connecting shaft.
The ends of the left grounding clip sheet and the right grounding clip sheet which are detachably and fixedly connected are distributed with flat plate sections which are outward along the radius direction; the flat plate sections on the left grounding clip piece and the right grounding clip piece are respectively provided with a threaded hole and a counter bore, and the left grounding clip piece and the right grounding clip piece are fastened and connected by bolts.
The inner diameters of the left grounding clip sheet and the right grounding clip sheet are 14 mm.
And a cylindrical jumper wire nose is arranged on the right piece of the grounding clip.
And the inner side walls of the left grounding clip sheet and/or the right grounding clip sheet are provided with bulges.
The right piece of the grounding clamp is made of red copper, and the surface of the right piece of the grounding clamp is subjected to silver plating treatment; the left piece of the grounding clamp is made of stainless steel.
And a cavity formed by the attachment of the left grounding clip sheet and the right grounding clip sheet is matched with the outer diameter of the process pipe to be installed.
The invention has the following remarkable effects: the nuclear power plant pipeline jumper grounding clamp can be smoothly added to the existing hydrogen pipeline jumper, is simple to construct, cannot damage the material performance of a hydrogen pipeline, and can quickly add a jumper to a process pipeline.
Drawings
FIG. 1 is a schematic diagram of a nuclear power plant pipeline jumper grounding clamp according to the present invention;
FIG. 2 is an exploded view of a nuclear power plant pipeline jumper grounding clip according to the present invention;
FIG. 3 is a schematic view of a nuclear power plant pipeline jumper grounding clip according to the present invention in an installed state;
FIG. 4 is a general schematic view of a nuclear power plant pipeline jumper grounding clip installation in accordance with the present invention;
in the figure: 1. a connecting shaft; 2. a left grounding clip sheet; 3. a right sheet of the grounding clip; 4. and fastening the bolt.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 and 2, a nuclear power plant pipeline jumper grounding clamp comprises a left grounding clamp sheet 2, a right grounding clamp sheet 3 and a connecting shaft 1, wherein the left grounding clamp sheet 2 and the right grounding clamp sheet 3 are of two semi-cylindrical structures, and after the left grounding clamp sheet 2 and the right grounding clamp sheet 3 are matched and attached, the inner wall can form a complete cylindrical side wall structure; a cylindrical section with a through hole is arranged at the left end part of the left grounding clip sheet 2, two cylindrical sections with through holes are arranged at the left end part of the right grounding clip sheet 3 which is jointed with the left grounding clip sheet 2, and the distance between the two separated cylindrical sections on the right grounding clip sheet 3 is greater than the length of the cylindrical section on the left grounding clip sheet 2; when the left end part of the left grounding clip sheet 2 is attached to the left end part of the right grounding clip sheet 3, the cylindrical section on the left grounding clip sheet 2 is overlapped with the central axis of the cylindrical section on the right grounding clip sheet 3, and the connecting shaft 1 penetrates through the cylindrical sections on the left grounding clip sheet 2 and the right grounding clip sheet 3 to connect the left grounding clip sheet 2 and the right grounding clip sheet 3 into a whole, so that the left grounding clip sheet 2 and the right grounding clip sheet 3 can relatively rotate along the connecting shaft 1; the inner diameters of the left grounding clip sheet 2 and the right grounding clip sheet 3 are 14mm, and salient points are arranged on the inner walls of the left grounding clip sheet 2 and/or the right grounding clip sheet 3, so that the left grounding clip sheet 2 and the right grounding clip sheet 3 can be reliably contacted with a process pipeline under the pre-tightening force; the right side end parts of the left grounding clip sheet 2 and the right grounding clip sheet 3 are respectively provided with a flat plate section which is outward along the radius direction, the symmetrical positions of the left grounding clip sheet 2 and the right grounding clip sheet 3 are respectively provided with a plurality of threaded holes and counter bores, a bolt 4 penetrates through a deep hole on the right grounding clip sheet 3 and then is connected with the threaded hole on the left grounding clip sheet 2, and the left grounding clip sheet 2 and the right grounding clip sheet 3 can be tightly connected; a jumper wire nose is further arranged on a flat plate between counter bores of the right grounding clip piece 3, when a grounding wire needs to be bridged, a jumper wire is inserted into the jumper wire nose of the right grounding clip piece 3, and the outer wall of the jumper wire nose is pressed by using hydraulic pliers, so that the electric wire can be reliably connected with the right grounding wire piece 3; the right grounding clip 3 is made of red copper, and the surface of the right grounding clip is subjected to silver plating treatment; the connecting shaft 1 and the left grounding clip sheet 2 are made of stainless steel;
as shown in fig. 3 and 4, the jumper wire is connected with the jumper nose on the right grounding clamp piece after being pressed by the hydraulic clamp, the left grounding clamp piece can be sleeved on the process pipeline after being opened by rotating around the connecting shaft, the left grounding clamp piece is closed by rotating around the connecting shaft and the right grounding clamp piece, the reliable connection between the grounding clamp and the process pipeline is realized by fastening the left grounding clamp piece and the right grounding clamp piece through bolts, and finally the connection between the jumper wire and the process pipeline is completed.
Claims (9)
1. A nuclear power plant pipeline bridging grounding clamp is characterized by comprising a left grounding clamp sheet (2), a right grounding clamp sheet (3) and a connecting shaft (1), wherein the left grounding clamp sheet (2) and the right grounding clamp sheet (3) are of two semi-cylindrical barrel structures, and one ends of the left grounding clamp sheet (2) and the right grounding clamp sheet (3) are movably connected through the connecting shaft (1), so that the left grounding clamp sheet (2) and the right grounding clamp sheet (3) can be opened or closed in a relatively rotating mode; the other ends of the left grounding clip sheet (2) and the right grounding clip sheet (3) are detachably and fixedly connected.
2. The nuclear power plant pipeline jumper grounding clamp according to claim 1, wherein after the left grounding clamp sheet (2) and the right grounding clamp sheet (3) are matched and attached, the inner wall forms a complete cylindrical side wall structure.
3. The nuclear power plant pipeline jumper grounding clamp according to claim 1, wherein a cylindrical section with a central opening is arranged at one side end part of the left grounding clamp sheet (2), and two cylindrical sections with central openings are arranged at one side end part of the right grounding clamp sheet (3) and are separated from each other; the distance between two cylindrical sections of the right grounding clip piece (3) is greater than that of the cylindrical section on the left grounding clip piece (2); when the left grounding clip sheet (2) is attached to one side of the right grounding clip sheet (3), the cylindrical section on the left grounding clip sheet (2) is coaxial with the central hole of the cylindrical section on the right grounding clip sheet (3), and the cylindrical section is penetrated through by a connecting shaft, so that the left grounding clip sheet (2) is rotatably connected with the right grounding clip sheet (3) along the connecting shaft (1).
4. The nuclear power plant pipeline jumper grounding clamp according to claim 1, wherein the ends of the left grounding clamp sheet (2) and the right grounding clamp sheet (3) which are detachably and fixedly connected are distributed with flat plate sections which are outward along the radius direction; the flat sections on the left grounding clamp sheet (2) and the right grounding clamp sheet (3) are respectively provided with a threaded hole and a counter bore, and the left grounding clamp sheet (2) and the right grounding clamp sheet (3) are fastened and connected by bolts (4).
5. The nuclear power plant pipeline jumper grounding clamp according to any one of claims 1 to 4, characterized in that the inside diameter of the grounding clamp left plate (2) and the grounding clamp right plate (3) is 14 mm.
6. The nuclear power plant pipeline jumper grounding clamp according to any one of claims 1 to 4, characterized in that a cylindrical jumper nose is arranged on the right piece (3) of the grounding clamp.
7. The nuclear power plant pipeline jumper grounding clamp according to any one of claims 1 to 4, characterized in that the grounding clamp left plate (2) and/or the grounding clamp right plate (3) are provided with protrusions on the inner side walls.
8. The nuclear power plant pipeline jumper grounding clamp according to any one of claims 1 to 4, characterized in that the right piece (3) of the grounding clamp is made of red copper, and the surface of the right piece is subjected to silver plating treatment; the left grounding clip sheet (2) is made of stainless steel.
9. The nuclear power plant pipeline jumper grounding clamp according to claim 1, wherein a cavity formed by the left grounding clamp sheet (2) and the right grounding clamp sheet (3) in a fit mode is matched with the outer diameter of a process pipe to be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022075671.8U CN213242831U (en) | 2020-09-21 | 2020-09-21 | Nuclear power plant pipeline bridging grounding clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022075671.8U CN213242831U (en) | 2020-09-21 | 2020-09-21 | Nuclear power plant pipeline bridging grounding clamp |
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| Publication Number | Publication Date |
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| CN213242831U true CN213242831U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022075671.8U Active CN213242831U (en) | 2020-09-21 | 2020-09-21 | Nuclear power plant pipeline bridging grounding clamp |
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| CN (1) | CN213242831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103675A (en) * | 2020-09-21 | 2020-12-18 | 中核核电运行管理有限公司 | Nuclear power plant pipeline bridging grounding clamp |
-
2020
- 2020-09-21 CN CN202022075671.8U patent/CN213242831U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103675A (en) * | 2020-09-21 | 2020-12-18 | 中核核电运行管理有限公司 | Nuclear power plant pipeline bridging grounding clamp |
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