Gas current transformer fastening structure

Abstract

The utility model discloses a kind of gas current transformers fastening structure, including hoop, the both sides of hoop are fixedly connected with fixed sheet, the opposite end of two groups of fixed sheet is provided with locating piece, the opposite end of two groups of locating piece is provided with the connecting piece for connecting corresponding side fixed sheet, the opposite end of two groups of locating piece is provided with the recess that is adapted with flange bolt, recess is clamped on flange bolt to realize the further fixation of hoop, the utility model is fixed by the setting of hoop and locating piece, hoop both sides fixed sheet connects locating piece, recess on locating piece is clamped with flange bolt, realize the preliminary location and further fixation of hoop, cooperate fastener and close lock the both ends of hoop, can firmly embrace low-voltage shielding tube, effectively ensure that low-voltage shielding tube position is stable, avoid its deformation, displacement in transportation, installation or operation process, guarantee the installation quality and use stability of low-voltage shielding tube.

Description

Technical Field

[0001] This utility model relates to the technical field of gas current transformer fastening structure, specifically a gas current transformer fastening structure. Background Technology

[0002] As an important metering and protection device in the power system, gas current transformers are usually filled with insulating gases such as SF6. The core components include the shell, iron core, winding, primary conductor rod and insulating support components. In order to ensure the stability of the equipment during long-term operation (such as under vibration, temperature change and electromagnetic force) and to avoid the displacement of components leading to a decrease in insulation performance or deviation in metering accuracy, each core component needs to be reliably fixed by a fastening structure.

[0003] Existing low-pressure shielded pipe clamps mostly adopt a single locking structure, which is locked by closing the fasteners at both ends. This cannot form a linkage and fixation with the flange structure, resulting in insufficient circumferential stability of the clamp for the low-pressure shielded pipe. During transportation, installation or operation, the pipe body is prone to deformation and displacement, which seriously affects the installation quality and the stability of equipment operation. Utility Model Content

[0004] The purpose of this invention is to provide a fastening structure for a gas current transformer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas current transformer fastening structure includes a clamp, with fixing plates fixedly connected to both sides of the clamp. Positioning plates are provided at opposite ends of both sets of fixing plates, and connecting pieces for connecting corresponding fixing plates are provided at opposite ends of both sets of positioning plates. Recesses adapted to flange bolts are formed at opposite ends of both sets of positioning plates, and these recesses engage with the flange bolts to further secure the clamp. The two ends of the clamp are connected together by fasteners.

[0007] As a preferred technical solution, the fastener includes a stainless steel bolt inserted into one end of the clamp, the other end of the stainless steel bolt passing through the other end of the clamp and threaded with a stainless steel nut, and the end of the stainless steel nut contacting the surface of the other end of the clamp.

[0008] As a preferred technical solution, the connector includes connecting plates that are fixedly installed on opposite ends of two sets of positioning plates. The top of the opposite ends of the two sets of positioning plates are provided with grooves that extend along their length. The two sets of connecting plates are slidably inserted into the inner cavity of the corresponding side grooves. The bottom inner wall of the two sets of grooves is provided with anti-detachment components to prevent the corresponding side connecting plates from coming off.

[0009] As a preferred technical solution, the anti-detachment component includes a limiting hole formed at the bottom of each set of fixing plates and communicating with the interior of the corresponding side groove. The inner cavity of each set of limiting holes is slidably connected to a guide post. The top of each set of guide posts is fixedly connected to the top of the corresponding side connecting plate. The bottom of each set of guide posts is fixedly connected to a fixing bolt. The surface of each set of fixing bolts is fitted with an indicator for indicating the movement distance of the connecting plate. The lower end of each set of fixing bolts is threaded with a fixing nut. Tightening the fixing nut upwards pushes the indicator upwards, causing the indicator to abut against the bottom of the fixing plate, thereby fixing the connecting plate.

[0010] As a preferred technical solution, the indicator includes mounting rings respectively fitted onto the surfaces of two sets of fixing bolts, and the bottom of each of the two sets of fixing plates is inlaid with a scale strip set along the length of the fixing plate. A pointer for pointing to the corresponding scale strip is fixedly connected to one side of each of the two sets of mounting rings.

[0011] As a preferred technical solution, a limiting piece is fixedly connected to one side of the inner wall of both sets of mounting rings, and a limiting groove adapted to the limiting piece is opened on one side surface of both sets of fixing bolts. The limiting grooves of both sets are set along the height of the fixing bolts.

[0012] As a preferred technical solution, guide grooves are provided on both sides of the opposite end of the two sets of fixing plates, and guide rods are slidably inserted into the inner cavity of the guide grooves. The ends of the two sets of guide rods on the same side are respectively fixedly connected to the ends of the corresponding side connecting plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of clamps and positioning plates, connects the fixing plates on both sides of the clamp to the positioning plates. The recesses on the positioning plates engage with the flange bolts to achieve initial positioning and further fixation of the clamp. With the fasteners, the two ends of the clamp are closed and locked, which can firmly hug the low-pressure shielding pipe, effectively ensuring the stability of the low-pressure shielding pipe position, avoiding deformation or displacement during transportation, installation or operation, and ensuring the installation quality and use stability of the low-pressure shielding pipe.

[0015] 2. This utility model adopts a combination structure of stainless steel bolts and stainless steel nuts through the setting of fasteners. The bolts pass through both ends of the clamp and are locked by tightening the nuts. The stainless steel material can avoid the formation of eddy currents, which can not only ensure the electrical performance of the product, but also reduce costs. At the same time, it can reliably compress the clamp onto the low-voltage shielding tube, improve the clamp's fixing effect and safety of use.

[0016] 3. This utility model, through the setting of the connecting parts, has a groove on the fixing plate that is set along its length, and the connecting plate of the positioning plate is slidably inserted into the inner cavity of the groove. By sliding the connecting plate in the groove, the position of the positioning plate relative to the fixing plate can be flexibly adjusted, thereby adapting to flanges of different specifications, improving the versatility and adaptability of the clamp, eliminating the need to design clamps separately for different flanges, and reducing the cost of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fastening structure of the gas current transformer of this utility model.

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a cross-sectional view of the fixing piece of this utility model;

[0020] Figure 4 This is a schematic diagram of the groove structure of this utility model.

[0021] In the picture:

[0022] 100. Clamp; 101. Stainless steel bolt; 103. Stainless steel nut;

[0023] 200. Fixing plate; 201. Positioning plate; 202. Recess; 203. Limiting hole; 204. Guide post; 205. Fixing bolt; 206. Fixing nut; 207. Guide rod; 208. Connecting plate; 209. Groove; 210. Guide slot;

[0024] 300. Mounting ring; 301. Scale bar; 302. Pointer; 303. Limiting groove; 304. Limiting piece. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4This embodiment provides a fastening structure for a gas current transformer, including a clamp 100. Fixing plates 200 are fixedly connected to both sides of the clamp 100. Positioning plates 201 are provided at opposite ends of both sets of fixing plates 200. Connecting pieces for connecting the corresponding fixing plates 200 are provided at opposite ends of both sets of positioning plates 201. Recesses 202 adapted to flange bolts are provided at opposite ends of both sets of positioning plates 201. The recesses 202 engage with the flange bolts to further secure the clamp 100. Both ends of the clamp 100 are open... The clamps are connected together by fasteners. With the clamp 100 and positioning plates 201, the fixing plates 200 on both sides of the clamp 100 are connected to the positioning plates 201. The recesses 202 on the positioning plates 201 engage with the flange bolts to achieve initial positioning and further fixation of the clamp 100. With the fasteners, the two ends of the clamp 100 are closed and locked, which can firmly hug the low-pressure shielded pipe, effectively ensuring the stability of the low-pressure shielded pipe position and preventing deformation or displacement during transportation, installation or operation, thus ensuring the installation quality and stability of the low-pressure shielded pipe.

[0027] The fasteners include a stainless steel bolt 101 inserted into one end of the clamp 100, and the other end of the stainless steel bolt 101 passing through the other end of the clamp 100 and threaded with a stainless steel nut 103. The end of the stainless steel nut 103 contacts the surface of the other end of the clamp 100. Through the fastener configuration, a combination structure of stainless steel bolt 101 and stainless steel nut 103 is adopted. After the bolt passes through both ends of the clamp 100, it is locked by tightening the nut. The stainless steel material can avoid the formation of eddy currents, which can not only ensure the electrical performance of the product, but also reduce costs. At the same time, it can achieve reliable clamping of the clamp 100 on the low-voltage shielding tube, improve the fixing effect and safety of the clamp 100.

[0028] The connector includes connecting plates 208 fixedly installed at opposite ends of two sets of positioning plates 201. Each set of fixing plates 200 has a groove 209 extending along its length at its top opposite end. The two connecting plates 208 are slidably inserted into the inner cavity of the corresponding side groove 209. The bottom inner wall of each set of grooves 209 is provided with anti-detachment components to prevent the corresponding side connecting plates 208 from detaching. Through the connector, the fixing plates 200 have grooves 209 extending along their length, and the connecting plates 208 of the positioning plates 201 are slidably inserted into the inner cavity of the grooves 209. The sliding of the connecting plates 208 within the grooves 209 allows for flexible adjustment of the position of the positioning plates 201 relative to the fixing plates 200, thus adapting to flanges of different specifications. This improves the versatility and adaptability of the clamp 100, eliminating the need for separate clamp 100 designs for different flanges and reducing usage costs.

[0029] The anti-detachment component includes a limiting hole 203 located at the bottom of each set of fixing plates 200 and communicating with the interior of the corresponding side groove 209. Guide posts 204 are slidably connected to the inner cavities of both sets of limiting holes 203. The tops of the two sets of guide posts 204 are respectively fixedly connected to the tops of the corresponding side connecting plates 208. Fixing bolts 205 are fixedly connected to the bottoms of both sets of guide posts 204. Indicators for indicating the movement distance of the connecting plates 208 are sleeved on the surface of both sets of fixing bolts 205. Fixing nuts 206 are threaded to the lower ends of both sets of fixing bolts 205. Tightening the fixing nuts 206 upwards secures the connection. Pushing the indicator upwards at the end of the nut 206 causes it to abut against the bottom of the fixing plate 200, thereby fixing the connecting plate 208. Through the anti-loosening component, the guide post 204 and the limiting hole 203 cooperate to make the guide post 204 move synchronously when the connecting plate 208 slides. After adjustment, tightening the nut 206 can indirectly fix the position of the guide post 204 through the indicator, thereby achieving a stable fixation between the connecting plate 208 and the positioning plate 201, effectively preventing displacement of the connecting plate 208 and the positioning plate 201 during use, and ensuring the stability of the engagement between the positioning plate 201 and the flange bolt.

[0030] The indicator includes mounting rings 300 respectively fitted onto the surfaces of two sets of fixing bolts 205. Each of the two sets of fixing plates 200 has a scale strip 301 embedded at its bottom, extending along the length of the fixing plate 200. Each of the two sets of mounting rings 300 has a pointer 302 fixedly connected to one side, pointing to the corresponding scale strip 301. Through the pointer 302 and the scale strip 301, the mounting rings 300 move synchronously with the fixing bolts 205, causing the pointer 302 to change direction on the scale strip 301. The operator can precisely control the movement distance of the connecting plate 208 through the scale indicated by the pointer 302, ensuring that the recess 202 of the positioning plate 201 accurately engages with the flange bolts. This improves the accuracy of the positioning plate 201 adjustment, reduces operational difficulty, and ensures installation quality.

[0031] In this system, a limiting piece 304 is fixedly connected to one inner wall of each of the two sets of mounting rings 300, and a limiting groove 303 adapted to the limiting piece 304 is opened on one side surface of each of the two sets of fixing bolts 205. The two sets of limiting grooves 303 are set along the height of the fixing bolts 205. Through the setting of the limiting grooves 303 and the limiting pieces 304, the limiting piece 304 on the inner wall of the mounting ring 300 slides and engages with the limiting groove 303 on the fixing bolt 205, which can prevent the mounting ring 300 from rotating on the surface of the fixing bolt 205, ensuring that the pointer 302 always accurately points to the scale bar 301, avoiding scale indication deviation caused by the rotation of the mounting ring 300, further ensuring the accuracy of the control of the moving distance of the connecting plate 208, and improving the reliability of the adjustment process.

[0032] The two sets of fixing plates 200 each have guide grooves 210 on both sides of their opposite ends. Guide rods 207 are slidably inserted into the inner cavity of each guide groove 210. The ends of the two sets of guide rods 207 on the same side are respectively fixedly connected to the ends of the corresponding connecting plates 208. With the setting of guide grooves 210 and guide rods 207, when the connecting plate 208 slides, the guide rods 207 slide synchronously along the guide grooves 210 on the fixing plates 200. The cooperation between the guide rods 207 and the guide grooves 210 guides and limits the sliding direction of the connecting plate 208, effectively preventing the connecting plate 208 from shifting or shaking during movement, improving the stability and accuracy of the adjustment process of the positioning plate 201, and ensuring the positional accuracy of the positioning plate 201 after adjustment.

[0033] Working principle;

[0034] The clamp 100 is connected to the positioning plate 201 via two fixing plates 200. The recess 202 on the positioning plate 201 engages with the flange bolts, achieving initial positioning and further fixation of the clamp 100. Furthermore, the two ends of the clamp 100 are closed and locked by fasteners, firmly encircling the low-voltage shielding tube to ensure its stable position and prevent deformation or displacement during transportation, installation, or operation. The fasteners are made of stainless steel bolts 101 and stainless steel nuts 103. The bolts pass through both ends of the clamp 100 and are then tightened and locked by the nuts. The stainless steel material avoids the formation of eddy currents, ensuring the electrical performance of the product while reducing costs, and simultaneously achieving reliable clamping of the low-voltage shielding tube by the clamp 100.

[0035] Furthermore, a groove 209 extending along its length is provided on the top of the opposite end of the fixing plate 200. The connecting plate 208 at the opposite end of the positioning plate 201 can be slidably inserted into the inner cavity of the corresponding side groove 209. By sliding the connecting plate 208 in the groove 209, the position of the positioning plate 201 relative to the fixing plate 200 can be adjusted to adapt to flanges of different lengths.

[0036] The guide post 204 in the anti-detachment component is slidably connected to the limiting hole 203 at the bottom of the fixing plate 200, and the top of the guide post 204 is fixedly connected to the connecting plate 208. This allows the sliding of the connecting plate 208 to drive the guide post 204 to move synchronously along the limiting hole 203. After the positioning plate 201 is adjusted to the appropriate position, the fixing nut 206 below the fixing bolt 205 is tightened. The end of the fixing nut 206 pushes the indicator upward until the indicator abuts against the bottom of the fixing plate 200. The locking force of the fixing nut 206 is used to indirectly fix the position of the guide post 204, thereby achieving a stable fixation between the connecting plate 208 and the positioning plate 201 and preventing displacement.

[0037] When the connecting plate 208 moves the guide post 204 and the fixing bolt 205, the mounting ring 300 moves synchronously, and the pointer 302 changes its position on the scale bar 301. The operator can accurately control the moving distance of the connecting plate 208 through the scale indicated by the pointer 302, ensuring that the recess 202 of the positioning piece 201 can accurately engage with the flange bolt.

[0038] Meanwhile, during the sliding adjustment of the connecting plate 208 along the groove 209, the guide rod 207 slides synchronously along the guide groove 210. Through the cooperation of the guide rod 207 and the guide groove 210, the sliding direction of the connecting plate 208 is guided and limited, preventing the connecting plate 208 from shifting or shaking during the movement, and further improving the stability and accuracy of the adjustment process of the positioning piece 201.

[0039] The fastening structure and usage procedure of this gas current transformer are as follows:

[0040] 1. Initial fixing of the clamp: Place the clamp 100 on the outside of the low-voltage shield tube of the gas current transformer, use stainless steel bolts 101 to pass through both ends of the clamp 100, and tighten the stainless steel nuts 103 to achieve initial locking, so that the clamp 100 can basically hug the tube body.

[0041] 2. Adjust the position of the positioning piece: Push the positioning piece 201 so that its connecting plate 208 slides along the groove 209 of the fixing piece 200. By pointing the pointer 302 to the scale bar 301, accurately control the movement distance and align the recess 202 of the positioning piece 201 with the flange bolts of the equipment.

[0042] 3. Engaging and fixing the positioning piece: Engage the recess 202 of the positioning piece 201 onto the flange bolt, tighten the fixing nut 206 below the fixing bolt 205, so that the indicator (mounting ring 300) abuts against the bottom of the fixing piece 200, and fix the position of the positioning piece 201 by the limiting action of the guide post 204 and the guide rod 207.

[0043] 4. Final locking and reinforcement: Tighten the stainless steel nuts 103 at both ends of the clamp 100 again to ensure that the clamp 100 and the positioning plate 201 are doubly fixed, so as to achieve stable positioning of the low-pressure shielding tube.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fastening structure for a gas current transformer, characterized in that, The device includes a clamp (100), on both sides of which are fixedly connected to fixing plates (200). Each set of fixing plates (200) has a positioning plate (201) at one opposite end. Each set of positioning plates (201) has a connector for connecting the corresponding fixing plates (200) at one opposite end. Each set of positioning plates (201) has a recess (202) at one opposite end that is adapted to the flange bolt. The recess (202) engages with the flange bolt to further fix the clamp (100). The two ends of the clamp (100) are connected together by fasteners.

2. The gas current transformer fastening structure according to claim 1, characterized in that: The fastener includes a stainless steel bolt (101) inserted into one end of the clamp (100), the other end of the stainless steel bolt (101) passing through the other end of the clamp (100) and threaded with a stainless steel nut (103), the end of the stainless steel nut (103) contacting the surface of the other end of the clamp (100).

3. The gas current transformer fastening structure according to claim 2, characterized in that: The connector includes a connecting plate (208) fixedly installed at opposite ends of two sets of positioning plates (201). The top of the opposite ends of the two sets of positioning plates (200) are provided with grooves (209) arranged along their length. The two sets of connecting plates (208) are slidably inserted into the inner cavity of the corresponding side grooves (209). The bottom inner wall of the two sets of grooves (209) is provided with anti-detachment parts to prevent the corresponding side connecting plates (208) from falling out.

4. The gas current transformer fastening structure according to claim 3, characterized in that: The anti-detachment component includes a limiting hole (203) opened at the bottom of each set of fixing plates (200) and communicating with the interior of the corresponding side groove (209). The inner cavity of each of the two sets of limiting holes (203) is slidably connected with a guide post (204). The top of each of the two sets of guide posts (204) is fixedly connected to the top of the corresponding side connecting plate (208). The bottom of each of the two sets of guide posts (204) is fixedly connected with a fixing bolt (205). The surface of each of the two sets of fixing bolts (205) is fitted with an indicator for indicating the movement distance of the connecting plate (208). The lower end of each of the two sets of fixing bolts (205) is threaded with a fixing nut (206). When the fixing nut (206) is tightened upward, the end of the fixing nut (206) pushes the indicator upward, so that the indicator abuts against the bottom of the fixing plate (200), thereby fixing the connecting plate (208).

5. The gas current transformer fastening structure according to claim 4, characterized in that: The indicator includes mounting rings (300) respectively fitted onto the surfaces of two sets of fixing bolts (205), and scale strips (301) set along the length of the fixing pieces (200) are embedded in the bottom of each of the two sets of fixing pieces (200). A pointer (302) for pointing to the corresponding scale strip (301) is fixedly connected to one side of each of the two sets of mounting rings (300).

6. The gas current transformer fastening structure according to claim 5, characterized in that: Limiting plates (304) are fixedly connected to one side of the inner wall of both sets of mounting rings (300), and limiting grooves (303) adapted to the limiting plates (304) are opened on one side of the surface of both sets of fixing bolts (205). The limiting grooves (303) of both sets are set along the height of the fixing bolts (205).

7. A gas current transformer fastening structure according to any one of claims 3-6, characterized in that: Guide grooves (210) are provided on both sides of the opposite end of the two sets of fixing plates (200). Guide rods (207) are slidably inserted into the inner cavity of the guide grooves (210). The ends of the two sets of guide rods (207) on the same side are respectively fixedly connected to the ends of the corresponding side connecting plates (208).

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