Auxiliary quantifying device for SF6 gas leakage detection
By combining a detection hood and an air pump, and utilizing the density difference of SF6 gas, efficient quantitative detection of SF6 gas leaks is achieved. This solves the problems of small detection area and material waste in traditional methods, and improves detection accuracy and efficiency.
Patent Information
- Application Number
- CN202422973835.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Traditional SF6 gas leak detection devices have a small detection area, are easily affected by external interference, resulting in leaks going undetected. Furthermore, the process of removing the plastic sheeting is wasteful of materials and inefficient.
The system employs a combination structure consisting of a detection hood, a gas collection port, a suction pipe, an air pump, and a detection pipe. Utilizing the principle that SF6 gas is heavier than air, the air pump draws air from inside the detection hood to increase the actual leakage content of SF6 gas, and then quantitative leak detection is performed using a detection instrument.
It improves the accuracy and efficiency of testing, reduces material waste, shortens working time, and has a simple and reusable structure.
Smart Images
Figure CN223756221U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gas leak detection auxiliary device especially relates to a SF6 gas leak detection auxiliary quantitative device. BACKGROUND
[0002] SF6 gas is a kind of colorless, odorless, nontoxic, non-combustible inert gas, SF6 is strong electronegative gas, molecule easily adsorbs free electron and forms mass big negative ion, weakens collision ionization process in gas, so its electrical insulation strength is very high;Power industry is as insulation and arc-extinguishing medium, is widely used in high-voltage circuit breaker, GIS combination electrical apparatus, mutual inductor, high-voltage cable, transformer and other electrical equipment, SF6 gas insulation's fully-enclosed switchgear is much smaller than the land area of conventional open high-voltage distribution device, and its operation is not influenced by outside weather and environmental conditions, can also be used for superhigh voltage and ultrahigh voltage power system and distribution network, therefore, it is widely used in power industry.
[0003] SF6 gas filling equipment needs to carry out sealing test after new construction or overhaul, and the traditional qualitative leak detection device is easy to exist leak point undetected due to small detection surface and interference of wind and rain, in order to ensure the accuracy of detection, at present, quantitative leak detection is carried out by local bandaging method, which needs to cover each gas chamber installation connecting surface with plastic cloth and seal and bandage with adhesive tape, then leak detection is carried out after 24 hours, and the plastic cloth used for bandaging needs to be removed after leak detection is completed, and the plastic cloth is also seriously damaged during removal process, so the method is low in efficiency, large in workload and serious in material waste. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the shortcomings in the prior art and provides a SF6 gas leak detection auxiliary quantitative device.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme.
[0006] A kind of SF6 gas leak detection auxiliary quantitative device, including detection cover, gas collection port, suction duct, gas pump and detection pipeline, the detection cover top is provided with gas collection port, the opening of the gas collection port is towards detection cover, the upper end of the gas collection port is connected with the suction port of gas pump by suction duct, the gas outlet of the gas pump is connected with exhaust duct;The detection pipeline penetrates detection cover, one end of the detection pipeline is gas inlet, the gas inlet is arranged in detection cover, the other end of the detection pipeline is detection instrument adapter.
[0007] The bottom of the detection cover is open, the top of the detection cover is provided with a corresponding shell, the top of the gas collecting port, the air suction pipeline and the middle part of the detection pipeline are arranged in the shell, the top of the shell is provided with a connecting barrel, the connecting barrel is provided with a gas pump, a switch assembly and a power supply; the exhaust port of the exhaust pipeline and the detection instrument adapter are respectively arranged outside the two ends of the connecting barrel, so that the exhaust and the connection of the detection instrument are facilitated.
[0008] The gas pump is connected with the power supply and the switch assembly, the switch key of the switch assembly is arranged on the outer wall of the connecting barrel, and the gas pump is started conveniently.
[0009] The connecting barrel is transversely arranged at the top of the shell, one end of the connecting barrel is arranged at the top of the shell, and the other end of the connecting barrel extends to one side of the top of the shell, so that the connecting barrel is gripped conveniently during use.
[0010] The shell is a hard transparent acrylic plate.
[0011] The cover wall of the monitoring cover is made of silica gel.
[0012] By utilizing the principle that SF6 gas is heavier than air, the upper layer air in the detection cover is extracted by the gas pump, the real leakage content of SF6 gas in the detection cover is improved, and then the quantitative detection instrument is connected to the detection instrument adapter for quantitative leak detection, so that the detection accuracy can be greatly improved.
[0013] The utility model discloses the beneficial effects are as follows: simple structure, convenient to use, can be used repeatedly, except electric energy consumption, will not produce other material's loss, greatly shorten the time of leak detection work, improve detection efficiency and accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the side prone position structural drawing of the utility model;
[0015] Figure 2 It is the side prone position structural drawing of the utility model;
[0016] Figure 3 It is the internal structure diagram of the utility model;
[0017] In the drawing: 1, detection cover; 2, gas collecting port; 3, detection pipeline; 4, shell; 5, connecting barrel; 6, exhaust pipeline; 7, detection instrument adapter; 8, switch assembly; 9, gas pump; 10, power supply; 11, air suction pipeline; 12, air inlet. DETAILED DESCRIPTION
[0018] The technical solutions of the present application will be clearly and completely described below with reference to the embodiments, and obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.
[0019] Embodiment 1
[0020] With reference to the drawings and the description of the drawings, the present application provides a SF6 gas leak detection auxiliary quantitative device, which has the structure as follows: comprising a detection cover 1, a gas collecting port 2, a gas suction pipeline 11, a gas pump 9 and a detection pipeline 3, the bottom of the detection cover 1 is open, the top of the detection cover 1 is provided with the gas collecting port 2 penetratingly, the opening of the gas collecting port 2 faces the inside of the detection cover 1, the upper end of the gas collecting port 2 is connected with the gas suction port of the gas pump 9 through the gas suction pipeline 11, and the gas outlet of the gas pump 9 is connected with an exhaust pipeline 6; the detection pipeline 3 penetrates the detection cover 1, one end of the detection pipeline 3 is an air inlet 12, the air inlet 12 is arranged at a position close to the opening in the detection cover 1, and the other end of the detection pipeline 3 is a detection instrument adapter 7;
[0021] Further, the top of the detection cover 1 is provided with a corresponding shell 4, the top of the gas collecting port 2, the gas suction pipeline 11 and the middle part of the detection pipeline 3 are arranged in the shell 4, and the top of the shell 4 is provided with a connecting barrel 5 transversely;
[0022] Further, the gas pump 9, a switch assembly 8 and a power supply 10 are arranged in the connecting barrel 5; the gas pump 9 is connected with the power supply 10 and the switch assembly 8, the switch assembly 8 of the switch assembly 8 is arranged on the outer wall of the connecting barrel 5, and the gas pump 9 is started conveniently and easily;
[0023] Further, the gas outlet of the exhaust pipeline 6 and the detection instrument adapter 7 respectively pass out of the two ends of the connecting barrel 5, so that the exhaust and the connection of the detection instrument are facilitated;
[0024] Further, one end of the connecting barrel 5 is arranged at the top of the shell 4, and the other end of the connecting barrel 5 extends to one side of the top of the shell 4, so as to facilitate the holding of the connecting barrel 5 during use;
[0025] Further, the shell 4 is a hard transparent acrylic plate;
[0026] Further, the cover wall of the monitoring cover is made of silica gel;
[0027] The principle that SF6 gas is heavier than air is utilized;
[0028] During use, the upper layer air in the detection cover 1 is first extracted by the gas pump 9, so as to improve the real leakage content of the SF6 gas in the detection cover 1, and then the quantitative detection instrument is connected to the detection instrument adapter 7 for quantitative leak detection, so that the detection accuracy can be greatly improved.
Claims
1. A SF6 gas leak detection auxiliary quantitative device, characterized in that: Including detection cover, gas collecting port, air suction pipeline, air pump and detection pipeline, the top of the detection cover is provided with a gas collecting port, the opening of the gas collecting port faces the inside of the detection cover, the upper end of the gas collecting port is connected with the air suction port of the air pump through the air suction pipeline, and the air outlet of the air pump is connected with the exhaust pipeline; the detection pipeline penetrates through the detection cover, one end of the detection pipeline is an air inlet, the air inlet is arranged in the detection cover, the other end of the detection pipeline is a detection instrument adapter; the air inlet of the detection pipeline is located in the detection cover and close to the bottom opening.
2. The SF6 gas leak detection auxiliary quantitative device according to claim 1, characterized in that: The bottom of the detection cover is an opening, the top of the detection cover is provided with a corresponding shell, the top of the gas collecting port, the air suction pipeline and the middle part of the detection pipeline are arranged in the shell, the top of the shell is provided with a connecting barrel, the connecting barrel is provided with an air pump, a switch assembly and a power supply; the exhaust port of the exhaust pipeline and the detection instrument adapter respectively extend out of the two ends of the connecting barrel.
3. The SF6 gas leak detection auxiliary quantitative device according to claim 2, characterized in that: The air pump is connected with the power supply and the switch assembly, and the switch key of the switch assembly is arranged on the outer wall of the connecting barrel.
4. The SF6 gas leak detection auxiliary quantitative device according to claim 3, characterized in that: The connecting barrel is transversely arranged at the top of the shell, one end of the connecting barrel is arranged at the top of the shell, and the other end of the connecting barrel extends to one side of the top of the shell.
5. The SF6 gas leak detection auxiliary quantitative device according to claim 4, characterized in that: The shell is a hard transparent acrylic plate.
6. The SF6 gas leak detection auxiliary quantitative device according to claim 1, characterized in that: The cover wall of the detection cover is made of silica gel.