SF6 gas digital remote transmission sensor device
By introducing a heating component and sealing ring design into the SF6 gas digital remote transmission sensor, the problem of decreased measurement accuracy caused by the adhesion of decomposition products was solved, and high-temperature removal of decomposition products was achieved, thereby improving the measurement accuracy and lifespan of the sensor.
Patent Information
- Application Number
- CN202522187183.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-10-16
AI Technical Summary
In the long term, existing SF6 gas digital remote transmission sensors suffer from decreased measurement accuracy due to the adhesion of decomposition products to the sensor surface, which cannot be effectively removed.
The heating components include heating wires and connectors, which remove decomposition products adhering to the surface of the data acquisition unit by high-temperature heating. Combined with the sealing ring and channel design, gas flow and measurement accuracy are ensured.
It effectively removes harmful decomposition products from the sensor surface, improves measurement accuracy and sensor lifespan, and ensures measurement accuracy and reliability.
Smart Images
Figure CN223581836U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of sensors, in particular to an SF6 gas digital remote sensor device. BACKGROUND
[0002] Sulfur hexafluoride (SF6) as a colorless, odorless, non-toxic and non-combustible inert gas, has a wide range of applications in electrical equipment insulation, magnesium casting process, semiconductor manufacturing and medical fields. However, its strong greenhouse effect makes the emission of SF6 a global problem. Therefore, accurate monitoring of SF6 gas becomes particularly important.
[0003] The working principle of the SF6 gas digital remote sensor device is to calculate the content of SF6 gas based on the thermal conductivity difference between the measured gas and the background gas. When the measured gas flows into the sensor at a constant flow rate, the resistance value of the heating wire in the thermal conductivity cell changes due to the change in the concentration of SF6 gas. The resistance value signal is converted into an electrical signal by a Wheatstone bridge, and after circuit processing amplification, temperature compensation and linearization, the concentration measurement value of SF6 gas can be obtained.
[0004] SF6 gas will produce decomposition products during long-term use, which will adhere to the surface of the sensor, and over time, will affect the measurement accuracy of the sensor. CONTENT OF THE INVENTION
[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide an SF6 gas digital remote sensor device that effectively improves measurement accuracy.
[0006] The technical scheme of the present application is: an SF6 gas digital remote sensor device, an SF6 gas digital remote sensor device, comprising a sensor body, an air inlet interface valve and an air outlet interface valve are arranged on the sensor body, and a data collector is arranged on the sensor body, a heating assembly is arranged on the inner wall of the cavity of the sensor body, a channel is formed in the sensor body, the heating assembly comprises a heating wire arranged in the channel and a connecting piece electrically connected with the heating wire, the cavity is in communication with the air inlet interface valve and the air outlet interface valve, and the measurement end of the data collector is located in the cavity.
[0007] From the above scheme can be known that the gas inlet interface valve, sensor body cavity and SF6 gas insulation equipment gas chamber communication, as long as the SF6 gas in the gas chamber has airflow, SF6 gas will be passed to the data collector, automatically enter the measurement link.
[0008] The sensor body is provided with a channel, the heating assembly comprises a heating wire and a connecting piece, the heating wire comprises a first extension section, a heating section and a second extension section connected in sequence, the first extension section and the second extension section are located in the channel, the heating section is in a spring shape, and an axis of the heating section is coaxial with the cavity, and the connecting piece is arranged on the sensor body and electrically connected to the corresponding first extension section or second extension section.
[0009] Both ends of the channel are provided with sealing rings.
[0010] The inner wall of the cavity is provided with a groove, and the heating section is located in the groove.
[0011] The gas inlet interface valve is detachably connected to the sensor body.
[0012] The data collector is connected with a twisted pair cable, the data collector is electrically connected with a display host, and the display host is signal-connected with a mobile monitoring end.
[0013] The sealing ring is made of rubber. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a sectional view of the utility model;
[0015] Figure 2 is a partial view of the utility model;
[0016] Figure 3 is a side view of the utility model;
[0017] Figure 4 is a connection schematic view of the utility model;
[0018] BRIEF DESCRIPTION OF DRAWINGS
[0019] 1, sensor body; 2, gas inlet valve; 3, gas outlet valve; 4, data collector; 5, cavity; 6, channel; 7, first extension section; 8, heating section; 9, second extension section; 10, sealing ring; 11, groove; 12, connecting piece. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.
[0021] As shown in the utility model is a kind of SF6 gas digital remote sensor device, including sensor body 1 on the gas inlet valve 2 and gas outlet valve 3 are arranged, and data collector 4 is arranged on sensor body 1, heating assembly is arranged on the inner wall of the cavity 5 of sensor body 1, channel 6 is opened in the sensor body 1, the heating assembly includes heating wire arranged in the channel 6 and the connecting piece 12 electrically connected with the heating wire, the cavity 5 and the gas inlet valve 2, the gas outlet valve 3 are communicated, and the measurement end of the data collector 4 is located in the cavity 5. Figures 1 to 3 Further, the gas inlet valve 2 and the gas outlet valve 3 are located on both sides of the sensor body 1, the SF6 gas enters the gas inlet valve 2, passes through the cavity 5 and flows out from the gas outlet valve 3.
[0022] The gas inlet valve 2, the cavity 5 of the sensor body 1 and the SF6 gas insulation equipment gas chamber are communicated, as long as the SF6 gas in the gas chamber has airflow, the SF6 gas will be connected to the data collector 4, and will automatically enter the measurement link. SF6 gas will produce decomposition in long-term use, and the decomposition will adhere to the surface of the data collector 4 for the sensor without high-temperature removal function, and the harmful decomposition adhering to the surface of the data collector 4 is volatilized by the high-temperature heating of the heating assembly, so that a high-temperature detoxification effect is achieved, and the sensor is well protected, and the service life of the sensor is improved.
[0023] In the scheme, the channel 6 is opened in the sensor body 1, the heating assembly includes the heating wire and the two connecting pieces 12; the heating wire includes the first extension section 7, the heating section 8 and the second extension section 9 connected in sequence; the first extension section 7 and the second extension section 9 are located in the corresponding channel 6; the heating section 8 is in the shape of a spring, and the axis of the heating section 8 is coaxial with the cavity 5; the two connecting pieces are arranged on the sensor body 1, and the connecting pieces are electrically connected to the corresponding first extension section 7 and second extension section 9.
[0024]
[0025] Further, the number of channels 6 is two, and the channels 6 can be arranged on both sides of the data collector 4. The connecting piece is arranged on the sensor body 1, and one end of the connecting piece 12 is located outside the sensor body 1, and the other end is located in the corresponding channel 6 and connected to the corresponding first extension section 7 or second extension section 9.
[0026] In the scheme, the two ends of the channel 6 are provided with the sealing ring 10. Since SF6 is a harmful substance, and in order to ensure the accuracy of the measurement, the channel 6 needs to be sealed.
[0027] Further, the outer wall of the connecting piece 12 is provided with a plurality of annular protrusions, and the inner wall of the sealing ring 10 is provided with a plurality of annular grooves. The protrusions and the grooves are clamped with each other, and the sealing property is further improved.
[0028] In the scheme, the inner wall of the cavity 5 is provided with the groove 11, and the heating section 8 is located in the groove 11.
[0029] Further, since the heating section 8 also contacts SF6 for a long time, in order to reduce the damage to the heating section 8, the heating section 8 can be partially located in the groove 11 to reduce the contact with SF6 as much as possible, but does not affect the heating function, and the service life of the device is improved.
[0030] In the scheme, the gas inlet interface valve 2 is detachably connected to the sensor body 1.
[0031] Further, the gas inlet interface valve 2 is connected to the sensor body 1 through threads, so that the gas inlet interface valve 2 can be replaced and adapted to different interfaces.
[0032] In the scheme, the data collector 4 is connected with a twisted pair cable, which is used for configuring an external data processing device. The data collector 4 is electrically connected with a display host 20, and the display host 20 is signal-connected with a mobile monitoring end 30. The data collector is used for convenient and fast data transmission, and the mobile monitoring end 30 adopts monitoring software in a mobile phone terminal. A plurality of SF6 gas digital remote transmission sensor devices can be connected to an integrated data display host (IED) through the twisted pair cable. The integrated data display host (IED) can be connected with a detection system software, connected with a protocol converter, and connected with an integrated automation system (station control layer). The data is transmitted to a monitoring target equipment in a background in a digital form and is transmitted and saved in real time.
[0033] In the scheme, the sealing ring 10 is made of rubber.
[0034] The implementation principle of the SF6 gas digital remote sensor device of the embodiment of the application is as follows: the gas inlet interface valve 2 and the gas outlet interface valve 3 are located on the two sides of the sensor body 1, SF6 gas enters the gas inlet interface valve 2, passes through the cavity 5 and flows out from the gas outlet interface valve 3. The gas inlet interface valve 2, the cavity 5 of the sensor body 1 and the SF6 gas insulation equipment gas chamber are communicated, as long as the SF6 gas in the gas chamber has gas flow, the SF6 gas will be connected to the data collector 4, and automatically enters the measurement link. SF6 gas will produce decomposition products in long-term use, and for the sensor without high-temperature removal function, the decomposition products will adhere to the surface of the data collector 4, and through high-temperature heating of the heating assembly, the harmful decomposition products adhering to the surface of the data collector 4 are volatilized, which plays a high-temperature detoxification role, and well protects the sensor and improves the service life of the sensor.
[0035] The application is applied to high-voltage electrical SF6 gas insulation equipment. SF6 gas will decompose to produce various low fluorides (such as SF4, SOF2, SO2F2 and the like) and hydrogen fluoride (HF) and the like harmful decomposition products under the action of electric arc and corona in electrical equipment. For the micro water sensor and the data collector without high-temperature removal function, these gaseous or solid decomposition products will be adsorbed and adhered to the surface of the precise components, and the decomposition products will continuously adhere, which causes the measurement accuracy to drift.
[0036] For the micro water sensor without high-temperature removal function, the decomposition products will adhere to the surface of the sensor, which will affect the measurement accuracy of the sensor over a long period of time. The application realizes high-temperature removal through high-temperature drying, volatilizes the harmful decomposition products adhering to the surface of the sensor, plays a high-temperature detoxification role, and provides energy through high temperature, which on one hand makes the adhering molecules “break away” from the surface constraint and directly volatilize (physical process), and on the other hand “decomposes” the stubborn compounds into volatile small molecules (chemical process), so as to realize thorough cleaning.
[0037] On the other hand, the SF6 gas in the gas chamber will flow into the collector of the sensor as long as the SF6 gas has gas flow, the digital sensor automatically dries through the collected SF6 gas, evaporates all the water carried by itself, and then can enter the measurement link. At this time, the water measured by the sensor can reflect the real water content in the GIS gas chamber.
[0038] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.
[0039] Finally, it needs to be emphasized that the above description is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be contained in the protection scope of the utility model.
Claims
1. A SF6 gas digitized remote transmission sensor device, comprising a sensor body (1), an inlet gas interface valve (2) and an outlet gas interface valve (3) are arranged on the sensor body (1), and a data collector (4) is arranged on the sensor body (1), characterized in that: The inner wall of the cavity (5) of the sensor body (1) is provided with a heating assembly, a channel (6) is formed in the sensor body (1), the heating assembly comprises a heating wire arranged in the channel (6) and a connecting piece (12) electrically connected with the heating wire, the cavity (5) is communicated with the gas inlet interface valve (2) and the gas outlet interface valve (3), and the measuring end of the data collector (4) is located in the cavity (5).
2. The SF6 gas digitalized remote sensor device according to claim 1, characterized in that: The heating wire comprises a first extension section (7), a heating section (8) and a second extension section (9) connected in sequence, the first extension section (7) and the second extension section (9) are located in the channel (6), the heating section (8) is in a spring shape, the axis of the heating section (8) is coaxial with the cavity (5), and the connecting piece (12) is arranged on the sensor body (1) and electrically connected with the corresponding first extension section (7) or second extension section (9).
3. The SF6 gas digitalized remote sensor device according to claim 1, characterized in that: Both ends of the channel (6) are provided with sealing rings (10).
4. The SF6 gas digitalized remote sensor device according to claim 2, characterized in that: The inner wall of the cavity (5) is provided with a groove (11), and the heating section (8) is located in the groove (11).
5. The SF6 gas digitalized remote sensor device according to claim 3, characterized in that: The gas inlet interface valve (2) is detachably connected to the sensor body (1).
6. The SF6 gas digital long-distance transmission sensor device according to claim 3, characterized in that: The data collector (4) is connected with a twisted-pair cable, the data collector (4) is electrically connected with a display host (20), and the display host (20) is signal-connected with a mobile monitoring end (30).
7. The SF6 gas digitalized long-range sensor device according to claim 3, characterized in that: The sealing ring (10) is made of rubber.