SF6 density meter

Abstract

The utility model relates to the technical field of electric power, in particular to an SF6 density meter which comprises a meter head assembly, and the bottom of the meter head assembly is fixedly connected with a connection sealing assembly. The first flange plate and the second flange plate are used for providing sealing, supporting, pressure and vibration bearing, connection flexibility and the like for the connecting bottom end, safe, stable and reliable operation during detection is guaranteed, and the sealing performance of the connecting bottom end can be further improved by adding the rubber sealing ring. The rubber sealing ring can effectively prevent leakage of air, water and other media, excellent sealing performance is provided, the special rubber material of the rubber sealing ring, such as silicone rubber, has good wear resistance, the service life of the sealing ring can be effectively prolonged, the wireless remote transmission density relay is used for monitoring the density of SF6 gas in a closed container, and the service life of the sealing ring is prolonged. And an on-line remote monitoring function is realized, so that safe and reliable operation of a power grid power transmission and transformation system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to an SF6 density gauge. Background Technique

[0002] An SF6 density gauge is an instrument for measuring the concentration of SF6 gas, mainly composed of a sensor, a connecting wire and a meter head. The SF6 density gauge has a wide range of applications in the power industry, is used to measure the density of SF6 gas in a sulfur hexafluoride circuit breaker, and can detect the density of SF6 gas online in real time.

[0003] The authorized announcement number CN220367165U discloses an SF6 density gauge. Through the protection structure of this patented technology, it is convenient to protect the density gauge main body. When in use, the density gauge main body is likely to accumulate dust. At this time, the protection cover can be flipped and covered in front of the density gauge main body, which can largely prevent dust from accumulating on the surface of the density gauge main body. When the protection cover is covered in front of the density gauge main body, the magnet is stuck inside the fixed groove, so that the protection cover can be fixed in front of the density gauge main body. However, dust may enter through the gap between the protection cover and the density gauge main body. Therefore, after the protection cover and the density gauge main body are closed, the micro-motor drives the flipping arm to rotate, and the flipping arm drives the cleaning brush to brush the dust on the front glass panel surface of the density gauge main body. After long-term use, the cleaning brush will be worn out and cannot brush clean. At this time, the cleaning brush needs to be replaced. Pull the cleaning brush to drive the installation strip out of the installation groove, and then snap the installation strip at one end of the new cleaning brush into the installation groove. At this time, the limit convex point is engaged with the groove inside the installation groove, and the cleaning brush can be fixed at one end of the flipping arm, realizing the dust cleaning operation while protecting the density gauge main body; however, currently when the SF6 density gauge is in use, operators often ignore the sealing problem of the bottom connection seat assembly, resulting in the leakage of SF6 gas, which in turn causes deviation of the detection data, and the traditional SF6 density gauge cannot be remotely controlled, resulting in low use efficiency. Therefore, an SF6 density gauge is needed to improve the above problems. Content of the Utility Model

[0004] In order to solve the problem that currently when the SF6 density gauge is in use, operators often ignore the sealing problem of the bottom connection seat assembly, resulting in the leakage of SF6 gas, which in turn causes deviation of the detection data, and the traditional SF6 density gauge cannot be remotely controlled, resulting in low use efficiency, the purpose of the present utility model is to provide an SF6 density gauge to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] An SF6 density gauge, comprising a meter head assembly, and a connection and sealing assembly is fixedly connected to the bottom of the meter head assembly;

[0007] The meter head assembly includes a housing, a base is fixedly connected to the side of the housing, and a wireless remote transmission density relay is fixedly connected to the side of the base;

[0008] The connection and sealing assembly includes a fixing block, a top bin is fixedly connected to the bottom of the connection pipe at the bottom of the fixing block, a mounting plate is fixedly connected to the bottom of the top bin, a first flange is fixedly connected to the bottom of the mounting plate, a second flange is arranged at the bottom of the first flange, a rubber sealing ring is arranged between the first flange and the second flange, and a welding ring is fixedly connected to the top of the second flange.

[0009] As a preferred solution of the present utility model, a threaded pipe is fixedly connected to the inside of the fixing block, a threaded hole is opened in the inside of the connection pipe, and the connection pipe and the threaded hole are in threaded connection.

[0010] As a preferred solution of the present utility model, a connection pipe is fixedly connected to the bottom of the second flange, and a connection base is fixedly connected to the bottom of the connection pipe.

[0011] As a preferred solution of the present utility model, a first fixing hole is opened in the inside of the first flange, four first fixing holes are opened, and a threaded rod is arranged in the inside of the first fixing hole for use.

[0012] As a preferred solution of the present utility model, a second fixing hole is opened in the inside of the second flange, four second fixing holes are opened, and a fixing nut is arranged at the bottom of the second fixing hole for use.

[0013] As a preferred solution of the present utility model, a metal shell frame is fixedly connected to the side of the housing, and the material of the metal shell frame is stainless steel.

[0014] As a preferred solution of the present utility model, an acrylic transparent plate is fixed inside the metal shell frame, and a dial is fixedly connected to the inside of the housing.

[0015] As a preferred solution of the present utility model, a scale is fixedly connected to the side of the dial, and a pointer is arranged on the side of the dial.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. In the present utility model, by utilizing the first flange and the second flange to provide functions such as sealing, support, pressure and vibration resistance, and connection flexibility for the connection bottom end, the safety, stability and reliable operation during detection are ensured. Adding a rubber sealing ring can further enhance the sealing performance of the connection bottom end. The rubber sealing ring can effectively prevent the leakage of air, water and other media, providing excellent sealing performance. The special rubber material of the rubber sealing ring, such as silicone rubber, has good wear resistance, which can effectively extend the service life of the sealing ring. The rubber sealing ring has good elasticity and toughness, and can adapt to deformation and vibration in various environments.

[0018] 2. In the present utility model, by using a wireless remote density relay to monitor the density of SF6 gas in a closed container, the gas density can be displayed on-site. When the density value reaches the set value, an alarm signal is output. It has the function of real-time remote transmission of SF6 gas density change data and realizes the online remote monitoring function. When SF6 gas in the closed system leaks, an alarm and locking signal are output to ensure the safe and reliable operation of the power grid transmission and transformation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the structure of the meter head assembly of the present utility model;

[0021] Figure 3 is a schematic diagram of the structure of the connection and sealing assembly of the present utility model;

[0022] Figure 4 is an exploded schematic diagram of the connection and sealing assembly of the present utility model.

[0023] In the figure: 1. Meter head assembly; 101. Bin body; 102. Metal shell frame; 103. Dial; 104. Pointer; 105. Scale; 106. Base; 107. Wireless remote density relay; 2. Connection and sealing assembly; 201. Fixed block; 202. Threaded pipe; 203. Connecting pipe; 204. Threaded hole; 205. Top bin; 206. Installation plate; 207. First flange; 208. First fixing hole; 209. Second flange; 210. Second fixing hole; 211. Welding ring; 212. Rubber sealing ring; 213. Connecting pipe; 214. Connection base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] For the embodiments, please refer to Figures 1-4 , the present invention provides a technical solution:

[0026] An SF6 density gauge, comprising a gauge head assembly 1, and a connection and sealing assembly 2 is fixedly connected to the bottom of the gauge head assembly 1.

[0027] In this embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the gauge head assembly 1 includes a bin body 101, a base 106 is fixedly connected to the side of the bin body 101, and a wireless remote transmission density relay 107 is fixedly connected to the side of the base 106. The connection and sealing assembly 2 includes a fixing block 201. The bottom of the fixing block 201 is provided with a connection pipe 203, the bottom of which is fixedly connected to a top bin 205. The bottom of the top bin 205 is fixedly connected to a mounting plate 206. The bottom of the mounting plate 206 is fixedly connected to a first flange 207. A second flange 209 is provided at the bottom of the first flange 207. A rubber sealing ring 212 is arranged between the first flange 207 and the second flange 209. A welding ring 211 is fixedly connected to the top of the second flange 209. The first flange 207 and the second flange 209 provide functions such as sealing, support, pressure and vibration resistance, and connection flexibility for the connection bottom end, ensuring safe, stable and reliable operation during detection. Adding the rubber sealing ring 212 can further improve the sealing performance of the connection bottom end. The rubber sealing ring 212 can effectively prevent the leakage of air, water and other media, providing excellent sealing performance. The special rubber material of the rubber sealing ring 212, such as silicone rubber, has good wear resistance and can effectively extend the service life of the sealing ring. The rubber sealing ring 212 has good elasticity and toughness and can adapt to deformation and vibration in various environments.

[0028] Among them, a threaded pipe 202 is fixedly connected inside the fixed block 201. A threaded hole 204 is provided inside the connecting pipe 203. The connecting pipe 203 is threadedly connected to the threaded hole 204. A connecting pipe 213 is fixedly connected to the bottom of the second flange 209. A connecting base 214 is fixedly connected to the bottom of the connecting pipe 213. A first fixing hole 208 is provided inside the first flange 207. Four first fixing holes 208 are provided. A threaded rod is used inside the first fixing hole 208. A second fixing hole 210 is provided inside the second flange 209. Four second fixing holes 210 are provided. A fixing nut is used at the bottom of the second fixing hole 210. The wireless remote density relay 107 is used to monitor the density of SF6 gas in the sealed container, can display the gas density on-site, outputs an alarm signal when the density value reaches the set value, has the function of real-time remote transmission of SF6 gas density change data, realizes the online remote monitoring function, and outputs an alarm and locking signal when the SF6 gas in the sealed system leaks, so as to ensure the safe and reliable operation of the power grid transmission and transformation system.

[0029] In this embodiment, as Figure 1 and Figure 2 shown, a metal shell frame 102 is fixedly connected to the side of the bin body 101. The material of the metal shell frame 102 is stainless steel. An acrylic transparent plate is fixed inside the metal shell frame 102. A dial 103 is fixedly connected inside the bin body 101. A scale 105 is fixedly connected to the side of the dial 103. A pointer 104 is arranged on the side of the dial 103. The acrylic transparent plate serves as a protection plate for the dial 103, which can not only enhance the safety of the dial 103, but also directly observe the displayed data.

[0030] The working process of the present utility model: When the SF6 density gauge designed by this scheme is working, the threaded pipe 202 is threadedly connected to the threaded hole 204. After placing the rubber sealing ring 212 between the first flange 207 and the second flange 209, the first flange 207 and the second flange 209 are fitted together. The threaded rod passes through the first fixing hole 208 and the second fixing hole 210 and is threadedly connected to the fixing nut at the bottom of the second fixing hole 210. Then the connecting base 214 is connected to the monitored sealed container. The wireless remote density relay 107 monitors the density of SF6 gas in the sealed container, can display the gas density on-site on the dial 103, outputs an alarm signal when the density value reaches the set value of SF6, has the function of real-time remote transmission of SF6 gas density change data, realizes the online remote monitoring function, and can also quickly transmit the collected data.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An SF6 density gauge, comprising a meter head assembly (1), characterized in that: The bottom of the said header component (1) is fixedly connected with a connection sealing component (2); The said header component (1) includes a bin body (101), the side of the bin body (101) is fixedly connected with a base (106), and the side of the base (106) is fixedly connected with a wireless remote transmission density relay (107); The said connection sealing component (2) includes a fixing block (201), the bottom of the fixing block (201) is provided with an adapter pipe (203), the bottom of the adapter pipe (203) is fixedly connected with a top bin (205), the bottom of the top bin (205) is fixedly connected with a mounting plate (206), the bottom of the mounting plate (206) is fixedly connected with a first flange (207), the bottom of the first flange (207) is provided with a second flange (209), a rubber sealing ring (212) is arranged between the first flange (207) and the second flange (209), and the top of the second flange (209) is fixedly connected with a welding ring (211).

2. The SF6 density gauge according to claim 1, characterized in that: A threaded pipe (202) is fixedly connected inside the fixing block (201), a threaded hole (204) is opened inside the adapter pipe (203), and the adapter pipe (203) is in threaded connection with the threaded hole (204).

3. The SF6 density gauge according to claim 1, characterized in that: The bottom of the second flange (209) is fixedly connected with a connecting pipe (213), and the bottom of the connecting pipe (213) is fixedly connected with a connecting base (214).

4. A kind of SF6 density gauge according to claim 1, characterized in that: A first fixing hole (208) is opened inside the first flange (207), four first fixing holes (208) are opened, and threaded rods are arranged inside the first fixing holes (208) for use.

5. The SF6 density gauge according to claim 1, characterized in that: A second fixing hole (210) is opened inside the second flange (209), four second fixing holes (210) are opened, and fixing nuts are arranged at the bottoms of the second fixing holes (210) for use.

6. The SF6 density gauge according to claim 1, characterized in that: The side of the bin body (101) is fixedly connected with a metal shell frame (102), and the material of the metal shell frame (102) is stainless steel.

7. The SF6 density gauge according to claim 6, characterized in that: An acrylic transparent plate is fixed inside the metal shell frame (102), and a dial (103) is fixedly connected inside the bin body (101).

8. The SF6 density gauge according to claim 7, wherein: A scale (105) is fixedly connected to the side of the dial (103), and a pointer (104) is arranged on the side of the dial (103).

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