A transformer oil analysis gas chromatograph

Abstract

The application relates to the technical field of chromatographs, in particular to a transformer oil analysis gas chromatograph which comprises a gas chromatograph body, the back surface of the gas chromatograph body is provided with a drying mechanism, the drying mechanism comprises a drying cylinder and color-changing silica gel, the surface of the gas chromatograph body is provided with a positioning mechanism for fixing the drying cylinder, the positioning mechanism comprises a fixing frame, an assembling plate and a locking buckle. The color-changing silica gel can be stored and sealed by the drying cylinder, the transported gas can be dried by the color-changing silica gel, the color-changing silica gel needs to be replaced in time after the color-changing silica gel changes into pink, the fixing sleeve one is positioned through the fixing frame, the fixing sleeve two is fixed through the assembling plate, the fixing sleeve two is close to the fixing frame, the positioning and clamping work of the drying cylinder is completed, the replacement difficulty of the drying cylinder is reduced by pulling the assembling plate upwards, and the convenience of using the drying cylinder is improved.

Description

Technical Field

[0001] This application relates to the technical field of chromatographs, and in particular to a gas chromatograph for transformer oil analysis. Background Technology

[0002] Gas chromatography (GC) is an instrument that uses chromatographic separation and detection techniques to perform qualitative and quantitative analysis of complex mixtures with multiple components. It is typically used to analyze thermally stable organic compounds in soil with boiling points not exceeding 500°C. Commonly used carrier gases in GC include hydrogen, nitrogen, and argon, requiring a purity of over 99%, good chemical inertness, and non-reaction with related substances.

[0003] A search revealed Chinese Patent Publication No. CN219496268U, which discloses a device for extracting and analyzing dissolved gases in transformer oil. The device includes a gas chromatograph body, a control panel fixedly mounted on one side of the gas chromatograph body, an addition tube fixedly connected to one side of the gas chromatograph body, and an oil injection pipe fixedly connected to one side of the addition tube. This device avoids the problem of high temperatures during internal operation that could damage internal components, reduces maintenance costs, and extends the service life of the gas chromatograph body.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: In the prior art, when using a gas chromatograph, a drying cylinder is required to dry and filter the carrier gas. During the drying process, the drying cylinder needs to be replaced periodically. Since the replacement of the drying cylinder is quite cumbersome, it increases the difficulty of using the gas chromatograph. In order to solve the problem of the cumbersome replacement of the drying cylinder in the prior art, this application proposes to fix the drying cylinder in a modular manner, thereby quickly completing the replacement of the drying cylinder and reducing the difficulty of replacing the drying cylinder. Utility Model Content

[0005] To reduce the difficulty of replacing the drying cylinder, this application provides a gas chromatograph for transformer oil analysis.

[0006] This application provides a gas chromatograph for transformer oil analysis, which adopts the following technical solution: The instrument includes a gas chromatograph body, and a drying mechanism is provided on the back of the gas chromatograph body. The drying mechanism includes a drying cylinder and color-changing silica gel. A positioning mechanism for fixing the drying cylinder is provided on the surface of the gas chromatograph body. The positioning mechanism includes a fixing frame, an assembly plate and a locking buckle. The fixing frame is fixedly connected to the gas chromatograph body. A fixing sleeve one is fixedly connected to the surface of the fixing frame. A fixing sleeve two is fixedly connected to the bottom of the assembly plate. The two ends of the drying cylinder are respectively inserted into the fixing sleeve one and the fixing sleeve two.

[0007] Optionally, the color-changing silica gel is disposed inside the drying cylinder, and a support mesh is snapped into the bottom of the drying cylinder, with the bottom of the color-changing silica gel abutting against the support mesh. The support mesh supports the color-changing silica gel, improving the stability of the color-changing silica gel stored inside the drying cylinder.

[0008] Optionally, a limiting cap is threadedly connected to the top of the drying cylinder, and the top of the color-changing silica gel abuts against the limiting cap. A support rod is fixedly connected to the middle of the limiting cap. The limiting cap fixes the top of the drying cylinder, thereby fixing the color-changing silica gel inside the drying cylinder and improving the storage stability of the color-changing silica gel.

[0009] Optionally, a sealing gasket is fixedly connected inside the fixed sleeve, and the sealing gasket abuts against the bottom end of the drying cylinder. The sealing gasket improves the sealing effect between the drying cylinder and the fixed sleeve, prevents gas leakage, and improves the safety and sealing of gas transmission.

[0010] Optionally, a sealing gasket is fixedly connected inside the fixed sleeve, and the top of the drying cylinder abuts against the sealing gasket. The sealing gasket improves the sealing effect between the drying cylinder and the fixed sleeve, prevents gas leakage, and improves the safety and sealing of gas transmission.

[0011] Optionally, a limiting slot is provided at the top of the fixing frame, and a limiting rod is fixedly connected to the surface of the assembly plate. The limiting rod is inserted into the limiting slot. The assembly plate is fixed at the top of the fixing frame by the limiting rod and the limiting slot, which prevents the assembly plate from shaking randomly and improves the stability of the device for positioning and installing the drying cylinder.

[0012] Optionally, the bottom end of the locking buckle is rotatably connected to the fixing frame, and a positioning plate is fixedly connected to the surface of the assembly plate. The top end of the locking buckle is engaged with the positioning plate. Through the locking buckle and the positioning plate, the assembly plate is tightly fixed to the top of the fixing frame. The locking buckle also reduces the difficulty of fixing and disassembling the assembly plate and improves the efficiency of drying cylinder replacement.

[0013] Optionally, the bottom of the mounting bracket is fixedly connected to a connecting pipe one, and the top of the mounting plate is fixedly connected to a connecting pipe two. Both connecting pipe one and connecting pipe two are fixedly connected to the gas chromatograph body. Through connecting pipe one and connecting pipe two, the carrier gas used inside the gas chromatograph body is connected to the drying cylinder, so that the carrier gas passes through the drying cylinder, thereby improving the drying efficiency of the carrier gas.

[0014] In summary, this application includes the following beneficial technical effects: 1. This utility model uses a drying cylinder to store and seal color-changing silica gel, and uses the color-changing silica gel to dry the conveyed gas. After the color-changing silica gel turns pink, it needs to be replaced in time. A fixing bracket is used to position the fixing sleeve one, and an assembly plate is used to fix the fixing sleeve two. The fixing bracket and the fixing sleeve two are brought close to each other to complete the positioning and clamping of the drying cylinder. When it is necessary to disassemble and replace the drying cylinder, the drying cylinder can be replaced by pulling the assembly plate upward, which reduces the difficulty of replacing the drying cylinder and improves the convenience of using the drying cylinder.

[0015] 2. This utility model improves the stability of the color-changing silica gel stored inside the drying cylinder by providing a support mesh. A limiting cap secures the top of the drying cylinder, further fixing the silica gel inside and enhancing storage stability. A support rod facilitates rotating the limiting cap, reducing the difficulty and convenience of replacing the silica gel. Sealing gasket one improves the sealing effect between the drying cylinder and the first fixing sleeve, preventing gas leakage and enhancing the safety and sealing of gas transmission. Sealing gasket two also improves the sealing effect between the drying cylinder and the second fixing sleeve, preventing gas leakage and enhancing the safety and sealing of gas transmission.

[0016] 3. This utility model uses a limiting rod and a limiting slot to fix the assembly plate to the top of the fixing frame, preventing the assembly plate from shaking randomly and improving the stability of the device for positioning and installing the drying cylinder. The assembly plate is tightly fixed to the top of the fixing frame by the locking buckle and the positioning plate. The locking buckle also reduces the difficulty of fixing and disassembling the assembly plate and improves the efficiency of changing the drying cylinder. The carrier gas used inside the gas chromatograph is connected to the drying cylinder through the connecting pipe one and the connecting pipe two, so that the carrier gas passes through the drying cylinder and improves the drying efficiency of the carrier gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the back structure of the gas chromatograph body in an embodiment of this application; Figure 3 This is a cross-sectional structural schematic diagram of the drying cylinder in an embodiment of this application; Figure 4 This is an embodiment of the present application. Figure 3 Enlarged structural diagram of the structure at point A.

[0018] Reference numerals in the attached drawings: 1. Gas chromatograph body; 2. Drying mechanism; 201. Drying cylinder; 202. Support mesh; 203. Color-changing silica gel; 204. Limiting cover; 205. Support rod; 3. Positioning mechanism; 301. Fixing frame; 302. Assembly plate; 303. Fixing sleeve one; 304. Sealing gasket one; 305. Connecting pipe one; 306. Fixing sleeve two; 307. Sealing gasket two; 308. Connecting pipe two; 309. Limiting slot; 310. Limiting rod; 311. Positioning plate; 312. Locking buckle. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] This application discloses a gas chromatograph for transformer oil analysis. For example... Figure 1 , Figure 2 and Figure 3 As shown, the instrument includes a gas chromatograph body 1. A drying mechanism 2 is provided on the back of the gas chromatograph body 1. The drying mechanism 2 includes a drying cylinder 201 and a color-changing silica gel 203. The color-changing silica gel 203 is stored and sealed through the drying cylinder 201. The gas being transported is dried through the color-changing silica gel 203. After the color-changing silica gel 203 turns pink, it needs to be replaced in time.

[0021] Please see Figure 3 The color-changing silica gel 203 is placed inside the drying cylinder 201. A support net 202 is snapped into the bottom of the drying cylinder 201, and the bottom of the color-changing silica gel 203 abuts against the support net 202. The support net 202 supports the color-changing silica gel 203, thereby improving the stability of the color-changing silica gel 203 stored inside the drying cylinder 201.

[0022] Please see Figure 4 The top of the drying cylinder 201 is threadedly connected to a limiting cover 204. The top of the color-changing silica gel 203 abuts against the limiting cover 204. A support rod 205 is fixedly connected to the middle of the limiting cover 204. The top of the drying cylinder 201 is fixed by the limiting cover 204, thereby fixing the color-changing silica gel 203 inside the drying cylinder 201, improving the storage stability of the color-changing silica gel 203. The support rod 205 facilitates the rotation of the limiting cover 204, reducing the difficulty of replacing the color-changing silica gel 203 and improving the convenience of replacing the color-changing silica gel 203.

[0023] Please see Figure 3 and Figure 4 The surface of the gas chromatograph body 1 is provided with a positioning mechanism 3 for fixing the drying cylinder 201. The positioning mechanism 3 includes a fixing frame 301, an assembly plate 302, and a locking buckle 312. The fixing frame 301 is fixedly connected to the gas chromatograph body 1. A fixing sleeve 303 is fixedly connected to the surface of the fixing frame 301. A fixing sleeve 306 is fixedly connected to the bottom of the assembly plate 302. The two ends of the drying cylinder 201 are respectively inserted into the fixing sleeve 303 and the fixing sleeve 306. The fixing sleeve 301 positions the fixing sleeve 303, and the assembly plate 302 fixes the fixing sleeve 306. The fixing frame 301 and the fixing sleeve 306 move closer to each other to complete the positioning and clamping of the drying cylinder 201. When it is necessary to disassemble and replace the drying cylinder 201, the drying cylinder 201 can be replaced by pulling the assembly plate 302 upward, which reduces the difficulty of replacing the drying cylinder 201 and improves the convenience of using the drying cylinder 201.

[0024] Please see Figure 3 and Figure 4 The bottom of the mounting bracket 301 is fixedly connected to a connecting pipe 305, and the top of the mounting plate 302 is fixedly connected to a connecting pipe 308. Both the connecting pipe 305 and the connecting pipe 308 are fixedly connected to the gas chromatograph body 1. Through the connecting pipe 305 and the connecting pipe 308, the carrier gas used inside the gas chromatograph body 1 is connected to the drying cylinder 201, so that the carrier gas passes through the drying cylinder 201 and the drying efficiency of the carrier gas is improved.

[0025] Please see Figure 3 A sealing gasket 304 is fixedly connected inside the fixed sleeve 303, and the sealing gasket 304 abuts against the bottom end of the drying cylinder 201. The sealing gasket 304 improves the sealing effect between the drying cylinder 201 and the fixed sleeve 303, prevents gas leakage, and improves the safety and sealing of gas transmission.

[0026] Please see Figure 4 The inner part of the fixed sleeve 306 is fixedly connected with a sealing gasket 307, and the top of the drying cylinder 201 abuts against the sealing gasket 307. The sealing gasket 307 improves the sealing effect between the drying cylinder 201 and the fixed sleeve 306, prevents gas leakage, and improves the safety and sealing of gas transmission.

[0027] Please see Figure 4The top of the fixed frame 301 has a limiting slot 309. The surface of the assembly plate 302 is fixedly connected to the limiting rod 310, and the limiting rod 310 is inserted into the limiting slot 309. The assembly plate 302 is fixed to the top of the fixed frame 301 through the limiting rod 310 and the limiting slot 309, so as to prevent the assembly plate 302 from shaking at will and improve the stability of the device for positioning and installing the drying cylinder 201.

[0028] Please see Figure 4 The bottom end of the locking buckle 312 is rotatably connected to the fixing frame 301. The surface of the assembly plate 302 is fixedly connected to the positioning plate 311, and the top end of the locking buckle 312 is engaged with the positioning plate 311. Through the locking buckle 312 and the positioning plate 311, the assembly plate 302 is tightly fixed to the top end of the fixing frame 301. The locking buckle 312 reduces the difficulty of fixing and disassembling the assembly plate 302 and improves the replacement efficiency of the drying cylinder 201.

[0029] The implementation principle of one embodiment of this application is as follows: After the color-changing silica gel 203 turns pink, the assembly plate 302 is first removed by locking buckle 312. Then, by moving the assembly plate 302 upward, the fixing sleeve 2 306 is disengaged from the drying cylinder 201. The old drying cylinder 201 is then removed, and the new drying cylinder 201 is inserted into the fixing sleeve 1 303, so that the bottom of the drying cylinder 201 abuts against the sealing gasket 2 307. The limiting rod 310 is inserted into the limiting slot 309, and the drying cylinder 201 is inserted into the fixing sleeve 2 306, so that the sealing gasket 2 307 abuts against the top of the drying cylinder 201, thus completing the fixing of the drying cylinder 201. The assembly plate 302 is fixed to the top of the fixing frame 301 by the limiting rod 310 and the limiting slot 309. The above device reduces the difficulty of replacing the drying cylinder 201, improves the efficiency of replacing the drying cylinder 201, and thus reduces the difficulty of using the gas chromatograph body 1.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gas chromatograph for transformer oil analysis, comprising a gas chromatograph body (1), characterized in that: A drying mechanism (2) is provided on the back of the gas chromatograph body (1). The drying mechanism (2) includes a drying cylinder (201) and a color-changing silica gel (203). A positioning mechanism (3) for fixing the drying cylinder (201) is provided on the surface of the gas chromatograph body (1). The positioning mechanism (3) includes a fixing frame (301), an assembly plate (302), and a locking buckle (312). The fixing frame (301) is fixedly connected to the gas chromatograph body (1). A fixing sleeve one (303) is fixedly connected to the surface of the fixing frame (301). A fixing sleeve two (306) is fixedly connected to the bottom of the assembly plate (302). The two ends of the drying cylinder (201) are respectively inserted into the fixing sleeve one (303) and the fixing sleeve two (306).

2. The gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The color-changing silica gel (203) is disposed inside the drying cylinder (201), and a support mesh (202) is snapped into the bottom of the drying cylinder (201), with the bottom of the color-changing silica gel (203) abutting against the support mesh (202).

3. The gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The top of the drying cylinder (201) is threadedly connected to a limiting cover (204), the top of the color-changing silica gel (203) abuts against the limiting cover (204), and a support rod (205) is fixedly connected to the middle of the limiting cover (204).

4. The gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The fixed sleeve (303) is internally fixedly connected to a sealing gasket (304), and the sealing gasket (304) abuts against the bottom end of the drying cylinder (201).

5. The gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The inner part of the fixed sleeve (306) is fixedly connected to the sealing gasket (307), and the top of the drying cylinder (201) abuts against the sealing gasket (307).

6. The gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The top of the fixing frame (301) has a limiting slot (309), and the surface of the assembly plate (302) is fixedly connected to a limiting rod (310), and the limiting rod (310) is inserted into the limiting slot (309).

7. A gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The bottom end of the locking buckle (312) is rotatably connected to the fixing frame (301), and the surface of the assembly plate (302) is fixedly connected to the positioning plate (311), and the top end of the locking buckle (312) is engaged with the positioning plate (311).

8. A gas chromatograph for transformer oil analysis according to claim 1, characterized in that: The bottom of the mounting bracket (301) is fixedly connected to a connecting pipe one (305), and the top of the mounting plate (302) is fixedly connected to a connecting pipe two (308). Both the connecting pipe one (305) and the connecting pipe two (308) are fixedly connected to the gas chromatograph body (1).

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