Metal flange grounding device

Abstract

The utility model discloses a metal flange grounding device, which comprises drill holes respectively arranged on two metal flanges, each drill hole is respectively connected with a shoot nail, the lower section of each shoot nail is arranged in the drill hole, a metal washer and a rubber washer are sequentially sleeved on a cylinder of the shoot nail at the upper part of the lower section of the shoot nail from top to bottom, and the metal washer and the rubber washer are respectively connected with the metal flange grounding device. The metal washer and the rubber washer are tightly pressed on the wall of the metal flange through a lower nut which is in threaded connection with the threaded section at the upper part of the shoot nail; and two grounding terminals of the grounding wire are respectively sleeved on the threaded section of the shoot nail at the upper part of the lower nut and are fastened on the shoot nail between the upper nut and the lower nut through the upper nut which is in threaded connection with the threaded section. The device can be used for grounding the metal flange more normatively, safely and efficiently.

Description

TECHNICAL FIELD

[0001] The utility model relates to a metal pipeline grounding device, especially a metal flange grounding device. BACKGROUND

[0002] The offshore oil platform is used for separating and processing the offshore mined oil and natural gas, has numerous process and public system metal pipelines 9 and thousands of pipeline flanges, and according to relevant standard specification requirements, the pipeline conveying combustible gas, liquid and solid and the pipeline in the explosion and fire dangerous place which can produce static electricity danger should all adopt static electricity grounding measures, especially at the metal flange position of connecting pipeline, need to use grounding cable to make static electricity cross connection, so that the grounding resistance is kept in the relevant standard range. The traditional metal flange grounding needs to weld special grounding sheet or grounding bolt at the flange, is used for fixing the grounding cable, and the material and labor cost is higher and needs welding operation, and the danger coefficient is big, sometimes does not have the fire condition, influences the construction period. SUMMARY

[0003] The utility model discloses a kind of metal flange grounding devices, which can be more convenient to carry out metal flange static electricity grounding without welding operation, save time and effort firm and reliable.

[0004] In order to achieve the above purpose, the technical scheme adopted is:

[0005] The utility model discloses a kind of metal flange grounding devices, including respectively open on two metal flanges on the drilling, two metal flanges are connected at the inlet, outlet position of valve respectively, each drilling is respectively connected with a shot pin, the lower section of each shot pin is arranged in drilling, metal washer and rubber washer are successively covered from top to bottom on the column body of shot pin located at the upper portion of the lower section of shot pin, metal washer and rubber washer are pressed on the metal flange wall by the lower nut of the upper portion of screw thread section of shot pin and be screwed, the two grounding terminals of grounding wire are respectively covered on the screw thread section of shot pin located at the upper portion of lower nut and be screwed on the shot pin between upper nut and lower nut by the upper nut of screw thread section.

[0006] The utility model has the advantages of not needing welding operation, can effectively solve the problem of metal flange grounding at low cost. The utility model is by electric drill on the metal flange drilling, by shot pin gun, grounding shot pin is driven into hole, fixed grounding cable, safe and reliable, installation process saves time and effort without additional auxiliary work, the requirement of operation environment and condition is low, can realize grounding installation quickly. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is a kind of metal flange grounding device structure schematic view of the utility model;

[0008] Figure 2 is Figure 1 The structure diagram of the device shown in the figure is installed on a metal flange;

[0009] Figure 3 is Figure 1 The device shown in the figure is installed on two metal flanges. DETAILED DESCRIPTION

[0010] The utility model will be described in detail below in combination with the drawings and specific embodiments.

[0011] A metal flange grounding device shown in the drawings, including the drill hole 6 opened on two metal flanges 8 respectively, the two metal flanges are connected at the inlet and outlet positions of valve 10 respectively, a shot pin is connected at each drill hole respectively, the lower section of each shot pin 1 is arranged in the drill hole, the metal washer 3 and the rubber washer 4 are sequentially sleeved on the shot pin cylinder from top to bottom at the upper part of the lower section of the shot pin 1, the metal washer 3 and the rubber washer are compressed on the metal flange wall through the lower nut 5 threaded with the threaded section 2 of the upper part of the shot pin, the two grounding terminals of the grounding wire 7 are sleeved on the threaded section of the shot pin at the upper part of the lower nut and are fastened on the shot pin between the upper nut and the lower nut through the upper nut threaded with the threaded section. One metal washer and one rubber washer are used for buffering and fixing the shot pin.

[0012] As an embodiment of the utility model, the diameter of the drill hole is equal to the diameter of the lower section of the shot pin 1, and the depth of the drill hole is greater than the length of the lower section of the shot pin 1 by 2mm. Thus, the operation is convenient, firm and reliable, the grounding can be effectively realized under the working condition that welding cannot be carried out, and the construction progress is not affected.

[0013] The shot pin can be a stainless steel shot pin, and the shot pin is composed of an upper section and a lower section, wherein the length of the upper section is 20mm and the upper section is threaded; the length of the lower section of the shot pin is 8mm and the lower section is a smooth cylinder, and the diameter is 4.5mm, and the diameter of the upper section of the shot pin is greater than the diameter of the lower section of the shot pin. Thus, the functional requirements are met, the operation and installation are facilitated, and the material and construction cost are greatly saved.

[0014] The installation process of the device is as follows:

[0015] First, drill holes are drilled on the metal flange using an electric drill, the metal washer 3 and the rubber washer 4 are installed on the shot pin, the shot pin 1 is shot into the drill hole 6 using a shot pin gun, a lower nut 5 is installed at the threaded section 2 position of the shot pin 1, the grounding wire 7 and the grounding terminal are installed, and another upper nut is used for fastening. Another flange is also drilled and installed with grounding shot pins at the corresponding positions, the grounding terminal is installed and fixed, and the flange grounding is realized.

Claims

1. A metal flange grounding device, characterized in that: The device includes drilled holes in two metal flanges, which are respectively connected to the inlet and outlet of a valve. Each drilled hole is connected to a shot nail, with the lower section of each shot nail placed inside the drilled hole. A metal washer and a rubber washer are sequentially fitted onto the post of the shot nail located above the lower section of the shot nail, from top to bottom. The metal washer and the rubber washer are pressed against the metal flange wall by a lower nut that is threadedly connected to the threaded section of the shot nail at the top. The two grounding terminals of the grounding wire are respectively fitted onto the threaded section of the shot nail located above the lower nut and are fastened to the shot nail between the upper nut and the lower nut by an upper nut that is threadedly connected to the threaded section.

2. The flange grounding device according to claim 1, characterized in that: The diameter of the drilled hole is equal to the diameter of the lower section of the nail, and the depth of the drilled hole is 2mm greater than the length of the lower section of the nail.

3. The flange grounding device according to claim 1, characterized in that: The nail consists of an upper section and a lower section. The upper section is 20mm long and has threads. The lower section is 8mm long and is a smooth cylinder with a diameter of 4.5mm. The diameter of the upper section is larger than that of the lower section.

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