GIL conductor foreign matter plugging structure
By using auxiliary mounting parts and anti-foreign sponge structures in GIL conductor tubes, the problems of difficult conductor foreign matter cleaning and high traditional welding costs are solved, and the effect of simplified manufacturing and stable operation is achieved.
Patent Information
- Application Number
- CN202421550970.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-03
AI Technical Summary
It is difficult to clean foreign matter of existing GIL conductors, traditional welding structural materials are costly and have long processing time, and the inner wall scale and scratched foreign matter may cause discharge, affecting product quality.
The auxiliary mounting parts and anti-foreign sponge structure are adopted to fix the anti-foreign sponge in the GIL conductor tube by clamping and adhesive, and the expansion force and adhesive of the sponge are used to achieve sealing, simplifying the manufacturing process and eliminating quality hazards.
The manufacturing process is simplified, the cost is reduced, the risk of discharge of oxide scales and metal foreign matters during assembly is avoided, and the long-term and stable operation of the product is ensured.
Smart Images
Figure CN223093477U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of GIL conductors, and more specifically, to a foreign object blocking structure for a GIL conductor. Background Art
[0002] For the method of preventing foreign objects in the inner cavity of a rigid gas insulated transmission line (GIL) conductor, as the conductive component of the GIL device, the inner cavity diameter of the conductor is small, and the length can reach up to 18 meters at most, making it difficult to clean the internal foreign objects and check the effect.
[0003] There are mainly two existing technologies. The first is to seal the inner cavity as an independent space by welding the conductive pipe and the two end joints to prevent foreign objects inside the conductor from coming out, as shown in Figure 1 ; where in the figure: 1A and 3A are joints, and 2A is the conductive pipe. The second is also to weld the conductor and the two end joints, but the inner cavity of the conductor is open, as shown in Figure 2 ; where in the figure 1B and 3B are joints, and 2B is the conductive pipe.
[0004] The joints of item 1A and item 3A in the conductor are usually made of aluminum rods or forging blanks, and the item 2A conductive pipe is directly extrusion-molded. After welding, the weld seams are polished and cleaned. Among them, Figure 1 for the inner cavity closed conductor shown, flaw detection of the weld seams is also required to verify that its inner cavity has been completely sealed and there is no hidden danger of air leakage.
[0005] To sum up, the joints of item 1B and item 3B in the conductor are dug out with aluminum rods, which have high material costs, long processing times, and consume a lot of cutting tools, or are made of forging blanks, but the procurement costs of forging blanks are also very high. After comprehensive comparison, the costs are similar. Using directly processed pipes has low procurement costs and short processing times, saving 60% - 70% in costs; the item 2B conductive pipe is extruded, and there are a large number of oxide skins and metal foreign objects remaining from scratches on the inner wall. If not controlled well, during the assembly and gas treatment (vacuum pumping and SF6 gas filling) processes, the oxide skins and metal foreign objects coming out from the inside of the conductor will cause discharges and affect the product quality). Content of the Utility Model
[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a foreign object blocking structure for a GIL conductor to solve the problems in the background art.
[0007] To achieve the above purpose, the utility model adopts the following technical solutions.
[0008] A foreign object blocking structure for a GIL conductor, comprising a GIL conductor tube. The inside of the GIL conductor tube is a cavity, and an auxiliary mounting member is arranged inside the cavity. A foreign object preventing sponge is clamped on the left side of the auxiliary mounting member, and an adhesive is coated on the outer side of the foreign object preventing sponge;
[0009] The auxiliary mounting member includes an outer card sleeve, a sleeve, a push rod and a push plate. The outer side of the outer card sleeve is in sliding contact with the inner wall of the cavity. One side of the foreign object preventing sponge is clamped into the inside of the outer card sleeve. The left end of the sleeve is inserted and fixed to the right side of the outer card sleeve and communicated with its inside. One end of the push rod is inserted and slides into the inside of the sleeve, and the left end of the push rod extends into the inside of the outer card sleeve and is fixedly connected to the push plate.
[0010] As a further description of the above technical solution: The inner diameter of the outer card sleeve is smaller than the outer diameter of the foreign object preventing sponge, and the thickness of the foreign object preventing sponge is greater than the inner cavity depth of the outer card sleeve.
[0011] As a further description of the above technical solution: The right end of the push rod extends to the outside of the sleeve and is provided with a limiting block.
[0012] As a further description of the above technical solution: The foreign object preventing sponge is a porous breathable and hydrophobic elastic sponge with a specific material and a fixed density.
[0013] As a further description of the above technical solution: The foreign object preventing sponge can also be other expandable EVA foams.
[0014] As a further description of the above technical solution: An outer expansion ring is arranged at the right position on the outer side of the outer card sleeve, and the outer expansion ring is in sliding contact with the inner wall of the cavity.
[0015] Compared with the prior art, the advantages of the present utility model are as follows:
[0016] In this solution, the auxiliary mounting member is used in cooperation with the foreign object preventing sponge, so that the device has changed the traditional conductor welding structure, and a new method is adopted to control the foreign objects that may remain inside the conductor. This method is easy to operate, saves the manufacturing process and cost of the conductor, and eliminates the potential quality hazards that may exist during the later operation of the product, ensuring the long-term stable operation of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view sectional structure schematic diagram of the prior art method one;
[0018] Figure 2 It is a front view sectional structure schematic diagram of the prior art method two;
[0019] Figure 3 It is a front view sectional structure schematic diagram of the present utility model;
[0020] Figure 4 is a partial three-dimensional structure diagram of the present utility model;
[0021] Figure 5 is a three-dimensional structure diagram of the foreign object prevention sponge of the present utility model.
[0022] Explanation of the reference numerals in the figure:
[0023] 1. GIL conductor tube; 2. Cavity; 3. Auxiliary mounting member; 31. Outer clamping sleeve; 311. Outer expansion ring; 32. Sleeve; 33. Push rod; 331. Limit block; 34. Push plate; 4. Foreign object prevention sponge; 5. Adhesive. Specific implementation manner
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0025] Please refer to Figures 3 to 5 , in the present utility model, a GIL conductor foreign object blocking structure includes a GIL conductor tube 1. The inside of the GIL conductor tube 1 is a cavity 2. An auxiliary mounting member 3 is arranged inside the cavity 2. A foreign object prevention sponge 4 is clamped on the left side of the auxiliary mounting member 3. A layer of adhesive 5 is coated on the outer side of the foreign object prevention sponge 4.
[0026] The auxiliary mounting member 3 includes an outer clamping sleeve 31, a sleeve 32, a push rod 33 and a push plate 34. The outer side of the outer clamping sleeve 31 is in sliding contact with the inner wall of the cavity 2. One side of the foreign object prevention sponge 4 is clamped into the inside of the outer clamping sleeve 31. The left end of the sleeve 32 is inserted and fixed to the right side of the outer clamping sleeve 31 and is communicated with its inside. One end of the push rod 33 is inserted and slides into the inside of the sleeve 32, and the left end of the push rod 33 extends into the inside of the outer clamping sleeve 31 and is fixedly connected to the push plate 34.
[0027] In the present utility model, the GIL conductor tube 1 serves as the main body of the device. During use, first, one side of the foreign object prevention sponge 4 is stuffed into the interior of the outer jacket 31 through extrusion, and a part of the outer ring is kept exposed. Then, the adhesive 5 is coated on the outer side of the foreign object prevention sponge 4. Next, the outer jacket 31 is horizontally aligned with the interior of the cavity 2, and while holding the sleeve 32, the outer jacket 31 and the foreign object prevention sponge 4 are horizontally stuffed into the interior of the cavity 2 of the GIL conductor tube 1. Then, the push rod 33 is used to linearly push the push plate 34 along the interior of the sleeve 32 to push the foreign object prevention sponge 4 out of the outer jacket 31. At this time, the foreign object prevention sponge 4 restores its shape under its own expansion force, closely adheres to the inner wall of the cavity 2, and is fixed to the foreign object prevention sponge 4 through the adhesive 5. Then, the entire auxiliary installation part 3 is withdrawn to complete the installation. Thus, the device has changed the traditional conductor welding structure, adopted a new method to control the foreign objects that may remain inside the conductor. This method is easy to operate, saves the manufacturing process and cost of the conductor, eliminates the potential quality hazards that may exist during the later operation of the product, and ensures the long-term stable operation of the product. It solves the problems existing in the prior art, such as high material cost, long processing time, excessive tool wear, and a large amount of oxide scale and scratched metal foreign objects remaining on the inner wall. If not well controlled, during the processes of assembly, gas treatment, evacuation, and filling with SF6 gas, the oxide scale and metal foreign objects coming out from the inside of the conductor will cause discharge and affect the product quality.
[0028] Please refer to Figure 3 and Figure 4 : The inner diameter of the outer jacket 31 is smaller than the outer diameter of the foreign object prevention sponge 4, and the thickness of the foreign object prevention sponge 4 is greater than the inner cavity depth of the outer jacket 31.
[0029] In the present utility model, since the inner diameter of the outer jacket 31 is smaller than the outer diameter of the foreign object prevention sponge 4, the clamping effect of the foreign object prevention sponge 4 inside the outer jacket 31 is more stable. And since the thickness of the foreign object prevention sponge 4 is greater than the inner cavity depth of the outer jacket 31, it is convenient to coat the adhesive 5 on the outer side of the foreign object prevention sponge 4.
[0030] Please refer to Figure 4 and
[0031] In the present utility model, the limiting block 331 can effectively prevent the push rod 33 from being displaced, so as to prevent it from falling off the sleeve 32.
[0032] Please refer to Figure 5 and
[0033] In the present utility model, the foreign object prevention sponge 4 is a porous breathable and hydrophobic elastic sponge with a specific material and fixed density, so that the foreign object prevention sponge 4 has a better sealing effect on the interior of the cavity 2 and a more stable structure.
[0034] Please refer to Figure 3 , wherein: the foreign object prevention sponge 4 can also be other expandable EVA foams.
[0035] In the present utility model, by using the expandable EVA foam, the foreign object prevention sponge 4 can be replaced, and various choices can achieve good effects.
[0036] Please refer to Figure 2 and Figure 3 , wherein: an outward expansion ring 311 is provided at the right position on the outer side of the outer card sleeve 31, and the outward expansion ring 311 is in sliding contact with the inner wall of the cavity 2.
[0037] In the present utility model, the outward expansion ring 311 enables the outer card sleeve 31 to slide stably inside the cavity 2 without deviation, ensuring that the pushing position of the foreign object prevention sponge 4 is more accurate.
[0038] The above is only the preferred specific embodiment of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improved concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A foreign object blocking structure for a GIL conductor, comprising a GIL conductor tube (1), characterized in that: The interior of the GIL conductor tube (1) is a cavity (2), and an auxiliary mounting member (3) is arranged inside the cavity (2). A foreign object prevention sponge (4) is clamped on the left side of the auxiliary mounting member (3), and an adhesive (5) is coated on the outer side of the foreign object prevention sponge (4). The auxiliary mounting member (3) includes an outer clamping sleeve (31), a sleeve (32), a push rod (33) and a push plate (34). The outer side of the outer clamping sleeve (31) is in sliding contact with the inner wall of the cavity (2). One side of the foreign object prevention sponge (4) is clamped into the inside of the outer clamping sleeve (31). The left end of the sleeve (32) is inserted and fixed to the right side of the outer clamping sleeve (31) and is communicated with its inside. One end of the push rod (33) is inserted and slides into the inside of the sleeve (32), and the left end of the push rod (33) extends into the inside of the outer clamping sleeve (31) and is fixedly connected to the push plate (34).
2. The foreign object blocking structure of a GIL conductor according to claim 1, characterized in that: The inner diameter of the outer clamping sleeve (31) is smaller than the outer diameter of the foreign object prevention sponge (4), and the thickness of the foreign object prevention sponge (4) is greater than the inner cavity depth of the outer clamping sleeve (31).
3. The foreign object plugging structure of a GIL conductor according to claim 1, characterized in that: The right end of the push rod (33) extends to the outside of the sleeve (32) and is provided with a limit block (331).
4. A GIL conductor foreign object plugging structure according to claim 1, characterized in that: The foreign object prevention sponge (4) is a porous breathable and hydrophobic elastic sponge with a specific material and a fixed density.
5. A GIL conductor foreign object blocking structure according to claim 1, characterized in that: The foreign object prevention sponge (4) can also be other expandable EVA foams.
6. The foreign object blocking structure of a GIL conductor according to claim 1, characterized in that: An outer expansion ring (311) is arranged at the right position on the outer side of the outer clamping sleeve (31), and the outer expansion ring (311) is in sliding contact with the inner wall of the cavity (2).