Dust cover of SF6 gas three-way device

Abstract

The utility model discloses a dust cover of an SF6 gas three-way device, and relates to the technical field of SF6 gas sealing. The utility model aims to solve the leakage problem of an SF6 gas sensor instrument caused by long-time sunlight irradiation and rainwater erosion. The dustproof cover comprises a dustproof cover body and a threaded sealing connecting ring. The thread sealing connecting ring is fixedly sleeved on the shell of the SF6 gas sensor instrument; the dust cover is of a hollow hexagonal prism structure with a hole in one side, is in threaded connection with the threaded sealing connecting ring through the hole side and covers the outer portion of a glass dial plate on the front side of the SF6 gas sensor instrument through the threaded sealing connecting ring, and a sealing protection structure is formed. According to the dust cover, the sealing performance and durability of the SF6 gas sensor are effectively improved, so that the safety and reliability of high-voltage power equipment are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of SF6 gas sealing technology, and in particular to a dust cover for an SF6 gas three-way device. Background Technology

[0002] Sulfur hexafluoride (SF6) is widely used in high-voltage power equipment due to its excellent insulation properties and arc-extinguishing characteristics; its main function is to provide good insulation to prevent electrical breakdown. SF6 gas is a critical insulating medium in GIS high-voltage equipment, and its leakage can affect insulation performance.

[0003] like Figure 1 As shown, the GIS high-pressure equipment is currently connected to a three-way valve via pipeline, and then to an SF6 gas sensor instrument via the three-way valve. Since the front glass panel of the SF6 gas sensor instrument is simply sealed with a gasket, and the front glass panel of the SF6 gas sensor instrument is exposed to sunlight and rain for a long time, it will age faster, resulting in SF6 gas leaking from the front glass panel of the SF6 gas sensor instrument. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a dust cover for an SF6 gas three-way device. By installing this dust cover on an SF6 gas sensor instrument, the SF6 gas sensor instrument can be protected, while also increasing its sealing performance.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A dust cover for an SF6 gas three-way device includes a dust cover and a threaded sealing ring; the threaded sealing ring is fixedly fitted onto the housing of an SF6 gas sensor instrument; the dust cover is a hollow hexagonal prism structure with an opening on one side, which is threadedly connected to the threaded sealing ring through the opening side, and covers the outside of the front glass dial of the SF6 gas sensor instrument through the threaded sealing ring to form a sealed protective structure.

[0007] Furthermore, the threaded sealing connection ring is a metal ring structure with a diameter that is compatible with the housing of the SF6 gas sensor instrument. Its outer surface is threaded, and a sealing end plate is formed on its rear side.

[0008] Furthermore, the sealing end plate of the threaded sealing connection ring is provided with a dustproof and waterproof sealing ring on the side in contact with the dust cover.

[0009] Furthermore, one side of the dust cover is provided with a threaded hole for a threaded sealing ring, and a recessed platform for a sealing end plate is formed on one end face of the dust cover at the threaded hole; after the dust cover is threadedly connected to the threaded sealing ring, the sealing end plate is embedded in the recessed platform.

[0010] Furthermore, an annular sealing gasket is installed on the inner edge of the recessed platform of the dust cover.

[0011] Furthermore, a moisture-absorbing silicone pad is installed at the bottom of the threaded hole of the dust cover.

[0012] The beneficial effects of this utility model are:

[0013] Enhanced sealing: The dust cover uses a threaded sealing connection ring, which is tightly connected to the SF6 gas sensor instrument to effectively prevent SF6 gas leakage, thereby improving the insulation performance of the equipment.

[0014] Dustproof and waterproof: The dust cover is designed with excellent dustproof and waterproof functions, which can effectively isolate external dust and moisture from corroding the sensor and extend the service life of the equipment.

[0015] Protecting Sensors and Instruments: The dust cover provides additional physical protection for SF6 gas sensors, resisting sunlight and harsh weather (such as rain), slowing down the aging of materials, and ensuring the long-term stable operation of the sensor.

[0016] Easy installation: The threaded connection design makes it easy to install and remove the dust cover, allowing maintenance personnel to quickly inspect and maintain the equipment.

[0017] Improved reliability: The dust cover reduces the impact of the external environment on the sensor, greatly improving the reliability and safety of the equipment and ensuring the safe operation of power equipment.

[0018] Reduced maintenance costs: By effectively protecting the sensor from external environmental damage, the frequency of maintenance and the need for replacement parts are reduced, thereby lowering subsequent maintenance costs.

[0019] In summary, the dust cover of this SF6 gas three-way device not only improves the instrument's sealing, durability, and reliability, but also provides a strong guarantee for the long-term operation of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the current installation of SF6 gas sensor instruments;

[0021] Figure 2 This is a schematic diagram showing the dust cover of the SF6 gas three-way device of this utility model after installation;

[0022] Figure 3 This is a cross-sectional view of the dust cover of the SF6 gas three-way device of this utility model;

[0023] Figure 4 This is a schematic diagram showing the disassembled SF6 gas three-way device of this utility model;

[0024] Figure 5 This is a view of the connection end face of the dust cover of the SF6 gas three-way device of this utility model;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Dust cover, 2. Threaded sealing ring, 3. SF6 gas sensor, 4. Sealing end plate, 5. Dustproof and waterproof sealing ring, 6. Threaded hole, 7. Countersunk platform, 8. Annular sealing gasket, 9. Annular groove, 10. Moisture-absorbing silicone pad. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] To address the issue that prolonged exposure to sunlight and rain can accelerate the aging of the front glass panel of an SF6 gas sensor, potentially leading to SF6 gas leakage, this embodiment provides a dust cover for an SF6 gas three-way device.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, the dust cover of the SF6 gas three-way device includes a dust cover 1 and a threaded sealing ring 2. The threaded sealing ring 2 is a metal ring structure, its diameter is adapted to the housing of the SF6 gas sensor instrument 3, and its outer surface is threaded; furthermore, to increase the sealing effect, such as... Figure 3 and Figure 4 As shown, in this embodiment, a sealing end plate 4 is provided on the rear side of the threaded sealing connecting ring 2.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the dust cover 1 is a hollow hexagonal prism structure with an opening on one side. The dust cover 1 is threadedly connected to the threaded sealing ring 2 through the opening side. The dust cover 1 is made of metal material and the outer surface is treated with silver-white oxidation. One side of the dust cover 1 is provided with a threaded hole 6 that matches the threaded sealing ring 2, and the threaded hole 6 forms a countersunk 7 that matches the sealing end plate 4 at one end face of the dust cover 1. After the dust cover 1 is threadedly connected to the threaded sealing ring 2, the sealing end plate 4 is embedded in the countersunk 7 to form the first sealing structure.

[0031] Furthermore, as a preferred technical solution in this embodiment, to further enhance the moisture-proof and waterproof function of the dust cover of the SF6 gas three-way device; such as... Figure 3 and Figure 4 As shown, in this embodiment, a dustproof and waterproof sealing ring 5 is also provided on the contact side between the sealing end plate 4 of the threaded sealing connection ring 2 and the dust cover 1; at the same time, as Figure 3 , Figure 4 and Figure 5 As shown, an annular sealing gasket 8 and an annular groove 9 that cooperate with the dustproof and waterproof sealing ring 5 are installed on the inner edge of the recessed platform 7 of the dust cover 1. The annular sealing gasket 8 forms a second sealing structure, and the dustproof and waterproof sealing ring 5 forms a third sealing structure.

[0032] During installation, the dust cover of this SF6 gas three-way device is first fixedly fitted onto the housing of the SF6 gas sensor instrument 3 via welding. Then, the dust cover 1 is threadedly connected to the threaded sealing ring 2 through the opening side, and the threaded sealing ring 2 covers the front glass dial of the SF6 gas sensor instrument 3, forming a sealed protective structure. The dust cover 1 encloses the front glass dial of the SF6 gas sensor instrument 3, forming a physical barrier that effectively prevents sunlight and rain erosion. Simultaneously, the fixing of the threaded sealing ring 2 and the compression of the sealing end plate 4 enhance the overall sealing performance, reducing the risk of SF6 gas leakage. The structure of the dust cover 1 effectively isolates dust and moisture intrusion, protecting the sensitive parts of the sensor instrument and extending its service life. The stable connection between the dust cover and the threaded sealing ring 2 allows the entire device to withstand changes in the external environment, such as temperature and pressure, ensuring stable operation of the equipment. When it is necessary to check the meter reading of the SF6 gas sensor instrument 3, the dust cover 1 can be quickly removed with a wrench, and then reinstalled after the reading is done.

[0033] Furthermore, as a preferred technical solution in this embodiment, to further enhance the moisture-proof function, such as... Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, a moisture-absorbing silicone pad 10 is also installed at the bottom of the threaded hole 6 of the dust cover 1. Each time the SF6 gas sensor instrument 3 is checked, the moisture-absorbing silicone pad 10 is checked for discoloration. If it discolors, it indicates that there is a leak at the front glass dial of the SF6 gas sensor instrument 3, and the SF6 gas sensor instrument 3 needs to be replaced in time.

[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A dust shield for a SF6 gas tee fitting, characterized by: It comprises a dust cover and a threaded sealing connecting ring; the threaded sealing connecting ring is fixedly sleeved on the shell of the SF6 gas sensor instrument; the dust cover is a hollow hexagonal prism structure with an opening on one side, which is threadedly connected with the threaded sealing connecting ring through the opening side and covers the front side glass dial outside the SF6 gas sensor instrument through the threaded sealing connecting ring to form a sealed protection structure.

2. The dust shield for SF6 gas tee device according to claim 1, characterized in that: The threaded sealing connecting ring is a metal ring body structure, the diameter of which is adapted to the shell of the SF6 gas sensor instrument, the outer surface of which is provided with threads, and the rear side of which is formed with a sealing end plate.

3. The dust shield for SF6 gas tee device according to claim 2, characterized in that: The sealing end plate of the threaded sealing connecting ring is provided with a dustproof and waterproof sealing ring on the contact side of the dust cover.

4. The dust shield for SF6 gas tee device according to claim 2, characterized in that: One side of the dust cover is provided with a threaded hole matched with the threaded sealing connecting ring, and the threaded hole is formed with a counterbore matched with the sealing end plate at the side end face of the dust cover; after the dust cover is threadedly connected with the threaded sealing connecting ring, the sealing end plate is embedded in the counterbore.

5. The dust shield for SF6 gas tee device according to claim 4, characterized in that: An annular sealing gasket is mounted on the inner edge of the counterbore of the dust cover.

6. The dust shield for SF6 gas tee device of claim 4, wherein: A moisture-absorbing silica gel pad is mounted at the bottom of the threaded hole of the dust cover.

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