Insulating fan skirt
By designing an insulated fan skirt, using fan-shaped plates and radiation ribs to cover the internal space of the isolating switch, the arc discharge and ground short circuit problems caused by bird nesting are solved, and the tripping problem is reduced and rainwater drainage functions are achieved.
Patent Information
- Application Number
- CN202411683916.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-02-18
AI Technical Summary
The isolation switch base of the electrified railway contact network leaves space to attract birds to nest, causing wet branches of conductive material to cause arc discharge and short circuits to the ground, causing tripping problems.
An insulating fan skirt is designed, composed of fan-shaped plates and radiating ribs, connected to the pillar insulators through mounting holes, and the design of flexible materials and radiating ribs covers the internal space of the isolation switch, prevents birds from building nests, and has the function of rainwater drainage.
Effectively prevent birds from building nests, reduce arc discharge and ground short circuits, avoid tripping problems, and also have rainwater drainage functions to prevent water accumulation.
Smart Images
Figure CN119480299A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electrified railway contact network, in particular to an insulating fan skirt. Background Art
[0002] The electrified railway contact network is the basic power supply facility that transmits electric energy to electric locomotives or EMUs. The disconnector is an electrical device that has the functions of isolating faults, segmenting operations, and changing the operating mode in the electrified railway contact network. Conventional disconnectors are installed on the base, including post insulators, operating insulators, operating mechanisms, moving contacts, static contacts, and terminals; the moving contacts and static contacts cooperate with each other and are insulated and installed on the base through post insulators; the moving contacts and static contacts are also installed with terminals that are electrically connected to the electrified railway contact network; the moving contacts are also connected to the operating mechanism through operating insulators. In addition to installing post insulators on the base, a lot of space will be left to attract birds to build nests. Most of the materials used by birds in the process of nesting are wet branches with conductive properties. When birds are waving wet branches in the internal space of the disconnector during nesting, the discharge distance between the conductors such as the moving contact and the static contact above relative to the base below will become shorter, causing arc discharge, causing a short circuit to the ground and causing tripping. Even if there is no short circuit during the nesting process, the nest after the nesting is completed will become wet and conductive due to rain, which will cause a short circuit to the ground and cause the circuit breaker to trip. It is necessary to improve the existing disconnector to reduce the tripping problem of the contact network and protect the lives of birds. Summary of the invention
[0003] The purpose of the present invention is to solve the above-mentioned problem and provide an insulating fan skirt.
[0004] The technical scheme of the present invention is: an insulating fan skirt, which is a fan-shaped plate as a whole, and a mounting hole is provided at the end of the central angle of the circle, which is used to connect with the post insulator; in fact, the post insulator comprises a plurality of shed skirts and a central axis which are sequentially mounted; the shed skirt is a dish-shaped body made of porcelain insulator or epoxy resin; the mounting hole is mounted on the central axis and abuts against the shed skirt; the fan-shaped plate extends toward the center of the seat plate; the insulating fan skirt is made of insulating flexible material throughout; only a small part of the space above the seat plate is not blocked by the insulating fan skirt, which hinders birds from building nests; by connecting the insulating fan skirts Rotating the central axis can change the shielding range of the insulating fan skirt; the insulating fan skirt is made of flexible plastic or silicone; if no treatment is done, the curved edge of the insulating fan skirt will naturally tilt downward; the area between the curved edge of the fan plate and the mounting hole is evenly distributed with a number of radiating ribs; the cross-section of a single radiating rib is arched; the cross-section of adjacent radiating ribs is wavy; the radiating ribs ensure the supporting effect to complete the coverage of the internal space of the disconnector to prevent birds from occupying and building nests. After installation, it is slightly tilted downward so that rainwater can be drained in time to avoid water accumulation.
[0005] Preferably, the insulating fan skirt as a whole is close to a left-right symmetrical structure, so that the degree to which the shielding range is changed by rotating the insulating fan skirt is easy to control, and the on-site adjustment of the insulating fan skirt is convenient.
[0006] Preferably, the radiating ribs extend from the mounting hole to the arc-shaped edge so that the radiating ribs intersect at the center of the fan-shaped plate, which is beneficial for evenly and stably transferring the supporting force at the mounting hole to the arc-shaped edge of the insulating fan skirt and improving the supporting capacity at the mounting hole.
[0007] Preferably, the width of the radiating ribs gradually increases, the height gradually decreases, and the material thickness gradually becomes thinner from the mounting hole to the arc edge; the radiating ribs near the mounting hole are in a gathered state due to the small space, and this part of the material is mainly used to bear most of the weight of the insulating fan group, so the width of its arched cross-section is small and the height is high to increase its bending resistance; from the mounting hole to the arc edge, the bearing weight gradually decreases, but the overall width of the fan plate gradually increases, so the height of its arched cross-section decreases to reduce the bending resistance, and the width increases to increase the lateral coverage area of the radiating ribs, the radiating ribs are connected in sequence to cover the entire fan plate laterally, improving its ability to maintain its overall lateral shape, and the gradual thinning of the material thickness is also for the above purpose.
[0008] Preferably, a coaxial hoop is provided at the mounting hole; the radiating ribs are connected to the side of the hoop to ensure sufficient connection strength so that the supporting force at the mounting hole is stably and evenly transferred to the radiating ribs.
[0009] Furthermore, a radial slit is provided on the outward side of the hoop; the radial slit enables the hoop to adapt to central axes of different thicknesses; radial plates parallel to the radial slit extend outward on both sides of the radial slit; the insulating fan skirt also includes two clamps, flange bolts, and flange nuts; the clamps are tightly attached to the outer walls of the radial plates; the clamps are provided with through holes A; the radial plates are provided with through holes B corresponding to through holes A; the flange bolts pass through through holes A and B and then engage with the flange nut threads; by adjusting the threaded engagement of the flange bolts and the flange nuts, the tightening degree of the radial slit can be adjusted so that the hoop can hug the central axis and realize the connection between the insulating fan skirt and the central axis; the clamps increase the contact area of the flange bolts and flange nuts on the radial plates to prevent the radial plates from being damaged and the connection between the insulating fan skirt and the central axis from failing.
[0010] Furthermore, buckle holes are symmetrically arranged on both sides of through hole A; buckles cooperating with the buckle holes are symmetrically arranged on both sides of through hole B; the buckle hole includes a large circular blind hole and a small circular through hole connected to each other; the large circular blind hole is arranged on the outer wall of the radial plate; the small circular through hole is arranged on the inner wall of the radial plate; the buckle includes a connected trapezoidal head and a connecting strip; the tail end of the trapezoidal head is connected to the clamping plate through the connecting strip; the trapezoidal head cooperates with the large circular blind hole; the connecting strip passes through the small circular through hole; the buckle cooperates with the buckle hole to realize the connection between the clamping plate and the radial plate, so that the clamping plate and the insulating fan skirt are connected as a whole to avoid the loss of the clamping plate; in this way, the clamping plate and the radial plate It can be assembled on the ground; the radial plate and the insulating fan skirt are made of the same material and also have a certain degree of flexibility; the trapezoidal head is passed through the small round through hole and stuck in the large round blind hole to achieve the connection between the clamping plate and the radial plate; the flange bolt is then passed through through hole A and through hole B to connect with the flange nut; in this way, when installing the insulating fan skirt at high altitude, it is only necessary to tighten the flange nut, which simplifies the installation operation of the insulating fan skirt; and avoids the risk of the clamping plate falling from a height; because the disconnector is located along the electrified railway, there is a safety hazard that the clamping plate will threaten the railway operation after falling from a height.
[0011] Furthermore, a cotter pin is installed at the threaded end of the flange bolt to prevent the flange nut from falling off.
[0012] Furthermore, the surfaces of the flange bolts and flange nuts are hot-dip galvanized and have a strong anti-corrosion function.
[0013] Furthermore, the inner end of the bolt head of the flange bolt and the inner end of the flange nut are both provided with circumferentially distributed teeth, which can increase the friction during connection and make the connection more stable.
[0014] Furthermore, the splint is provided with a connecting hole corresponding to the connecting strip; the tail end of the connecting strip is connected to the inner wall of the connecting hole; the connecting hole serves as the connecting end of the connecting strip on the one hand, and as an observation of the connection between the trapezoidal head and the large round blind hole on the other hand.
[0015] Furthermore, descending steps are provided on both sides of the radial plate to lower the position of the radial plate and reduce the overall thickness of the insulating fan skirt; the axis of through hole B corresponds to the surface of the fan-shaped plate; the connecting surface of adjacent radial ribs also corresponds to the fan-shaped plate; the axis of the flange bolt corresponds to the position of the radial rib, so that the supporting force brought by the flange bolt can be transmitted to the arc edge of the fan-shaped plate as smoothly as possible.
[0016] Preferably, one side of the insulating fan skirt is provided with an avoidance opening corresponding to the operating insulator, so as to make room for the operation of the operating insulator.
[0017] The beneficial effects of the present invention are as follows: the insulating fan skirt of the present invention has the following advantages: (1) The present invention provides an insulating fan skirt that can reduce the open-air area of the base to prevent birds from building nests. The insulating fan skirt covers the internal space of the disconnector by ensuring the supporting effect, preventing birds from occupying the space to build nests. After installation, it is slightly tilted downward, so that rainwater can be drained away in time to avoid water accumulation. The smooth curved surface of the radial ribs makes it difficult for birds to gain a foothold on the radial ribs, thereby increasing the difficulty of bird nesting. (2) The threaded cooperation of the flange bolt and the flange nut of the present invention can adjust the tightening degree of the radial seam so that the hoop tightly embraces the central axis and realizes the connection between the insulating fan skirt and the central axis; the clamping plate increases the contact area of the flange bolt and the flange nut on the radial plate to prevent the radial plate from being damaged and the connection between the insulating fan skirt and the central axis from failing; (3) The buckle of the present invention cooperates with the buckle hole to realize the connection between the clamping plate and the radial plate, so that the clamping plate and the insulating fan skirt are connected as a whole to prevent the clamping plate from being lost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the installation of the insulating fan skirt of the present invention; Figure 2 yes Figure 1 I magnified view of; Figure 3 The three-dimensional insulating fan skirt of the present invention in the first embodiment Figure 1 ; Figure 4 The three-dimensional insulating fan skirt of the present invention in the first embodiment Figure 2 ; Figure 5 yes Figure 3 A top view of Figure 6 yes Figure 5 AA section view; Figure 7 yes Figure 5 BB cross-sectional view; Figure 8 yes Figure 5 CC section view; Fig. 9 yes Figure 6 DD cross-sectional view; Fig.10 It is a three-dimensional insulating splint Figure 1 ; Fig.11 It is a three-dimensional insulating splint Figure 2 ; Fig.12 is a three-dimensional diagram of the insulating fan skirt of the present invention in the second embodiment; Fig.13 It is a real photograph of the present invention; In the figure: 01. Post insulator, 011. Shelter, 012. Center shaft, 02. Operating insulator, 1. Mounting hole, 2. Radial rib, 3. Hoop, 31. Radial seam, 32. Radial plate, 321. Through hole B, 322. Buckle hole, 3221. Large round blind hole, 3222. Small round through hole, 4. Clamp, 41. Through hole A, 42. Buckle, 421. Trapezoidal head, 422. Connecting strip, 43. Connecting hole, 44. Fillet, 5. Flange bolt, 6. Flange nut, 7. Split pin, 8. Descending step, 9. Avoidance. DETAILED DESCRIPTION
[0019] Example 1: See Figure 1-11 , an insulating fan skirt, which is a fan-shaped plate as a whole, and a mounting hole 1 is provided at the end of the central angle thereof for connecting with a post insulator 01; the post insulator 01 essentially comprises a plurality of shed skirts 011 and a central axis 012 which are sequentially mounted; the shed skirt 011 is a disc-shaped body made of a porcelain insulator or epoxy resin; the mounting hole 1 is mounted on the central axis 012 and abuts against the shed skirt 011; the fan-shaped plate extends toward the center of the base plate; the insulating fan skirt is made of insulating flexible material throughout; only a small part of the space above the base plate is not blocked by the insulating fan skirt, which hinders birds from nesting; by placing the insulating fan skirt relative to the central axis 0 12 rotation can change the shielding range of the insulating fan skirt; the insulating fan skirt is made of flexible plastic or silicone; if no treatment is done, the arc edge of the insulating fan skirt will naturally tilt downward; the area between the arc edge of the fan plate and the mounting hole 1 is evenly distributed with a number of radiating ribs 2; there are 14 radiating ribs 2 in this embodiment; the cross-section of a single radiating rib 2 is arched; the cross-section of adjacent radiating ribs 2 is wavy; the radiating rib 2 ensures the supporting effect to complete the coverage of the internal space of the disconnector to prevent birds from occupying and building nests. After installation, it is slightly tilted downward so that rainwater can be drained away in time to avoid water accumulation.
[0020] Compared with the prior art, the present invention provides an insulating fan skirt that can reduce the open-air area of the base to hinder birds from building nests. The insulating fan skirt ensures the supporting effect through the radial ribs 2 to complete the coverage of the internal space of the disconnector to prevent birds from occupying and building nests. After installation, it is slightly tilted downward so that rainwater can be drained away in time to avoid water accumulation. The smooth curved surface of the radial ribs 2 is also used to make it difficult for birds to gain a foothold on the radial ribs 2, thereby increasing the difficulty of bird nesting.
[0021] The insulating fan skirt is generally close to a bilaterally symmetrical structure, so that the degree to which the shielding range is changed by rotating the insulating fan skirt is easy to control, and the on-site adjustment of the insulating fan skirt is convenient.
[0022] The radiating rib 2 extends from the mounting hole 1 to the arc edge so that the radiating rib 2 intersects at the center of the fan plate, which is beneficial for evenly and stably transferring the supporting force at the mounting hole 1 to the arc edge of the insulating fan skirt and improving the supporting capacity at the mounting hole 1.
[0023] From the mounting hole 1 to the arc edge, the width of the radiating rib 2 gradually increases, the height gradually decreases, and the material thickness gradually becomes thinner; the radiating rib 2 near the mounting hole 1 is in a gathered state due to the small space, and this part of the material is mainly used to bear most of the weight of the insulating fan group, so the width of its arched cross-section is small and the height is high to increase its bending resistance; from the mounting hole 1 to the arc edge, the load-bearing weight gradually decreases, but the overall width of the fan-shaped plate gradually increases, so the height of its arched cross-section decreases to reduce the bending resistance, and the width increases to increase the lateral coverage area of the radiating rib 2, and the radiating ribs 2 are connected in sequence to cover the entire fan-shaped plate laterally, thereby improving its ability to maintain its overall lateral shape. Similarly, the gradual thinning of the material thickness is also for the above purpose.
[0024] A coaxial hoop 3 is provided at the mounting hole 1 ; the radiating rib 2 is connected to the side of the hoop 3 to ensure sufficient connection strength so that the supporting force at the mounting hole 1 is stably and evenly transmitted to the radiating rib 2 .
[0025] A radial slit 31 is provided on the outward side of the hoop 3; the radial slit 31 enables the hoop 3 to adapt to central axes 012 of different thicknesses; radial plates 32 parallel to the radial slit 31 extend outward on both sides of the radial slit 31; the insulating fan skirt also includes two clamps 4, flange bolts 5, and flange nuts 6; the clamps 4 are tightly attached to the outer walls of the radial plates 32; the clamps 4 are provided with through holes A 41; the radial plates 32 are provided with through holes B 321 corresponding to the through holes A 41; the flange bolts 5 pass through the through holes A 41 and B 321 and then threadedly engage with the flange nut 6; by adjusting the threaded engagement of the flange bolts 5 and the flange nuts 6, the tightening degree at the radial slit 31 can be adjusted, so that the hoop 3 hugs the central axis 012, thereby realizing the connection between the insulating fan skirt and the central axis 012; the clamps 4 increase the contact area of the flange bolts 5 and the flange nuts 6 on the radial plates 32 to prevent the radial plates 32 from being damaged and the connection between the insulating fan skirt and the central axis 012 from failing.
[0026] Snap holes 322 are symmetrically arranged on both sides of through hole A 41; snaps 42 cooperating with snap holes 322 are symmetrically arranged on both sides of through hole B 321; the snap holes 322 include connected large round blind holes 3221 and small round through holes 3222; the large round blind holes 3221 are arranged on the outer wall of the radial plate 32; the small round through holes 3222 are arranged on the inner wall of the radial plate 32; the snaps 42 include connected trapezoidal heads 421 and connecting strips 422; the tail end of the trapezoidal head 421 is connected to the clamping plate 4 through the connecting strip 422; the trapezoidal head 421 cooperates with the large round blind holes 3221; the connecting strip 422 passes through the small round through holes 3222; the snaps 42 cooperate with the snap holes 322 to realize the connection between the clamping plate 4 and the radial plate 32, so that the clamping plate 4 and the insulating fan skirt are connected to form a whole. body to avoid the loss of the splint 4; in this way, the splint 4 and the radial plate 32 can be assembled on the ground; the radial plate 32 is made of the same material as the insulating fan skirt and also has a certain flexibility; the trapezoidal head 421 is passed through the small round through hole 3222 and is stuck in the large round blind hole 3221 to achieve the connection between the splint 4 and the radial plate 32; then the flange bolt 5 is passed through the through hole A 41 and the through hole B 321 to connect with the flange nut 6; in this way, when installing the insulating fan skirt during high-altitude operation, it is only necessary to tighten the flange nut 6, which simplifies the installation operation of the insulating fan skirt; and avoids the risk of the splint 4 falling from a high altitude; because the location where the isolating switch is set is along the electrified railway, there is a safety hazard that the splint 4 will threaten the operation of the railway after falling from a high altitude.
[0027] A cotter pin 7 is installed at the threaded end of the flange bolt 5 to prevent the flange nut 6 from falling off.
[0028] The surfaces of the flange bolts 5 and flange nuts 6 are hot-dip galvanized and have a strong anti-corrosion function.
[0029] The splint 4 is provided with a connecting hole 43 corresponding to the connecting strip 422; the tail end of the connecting strip 422 is connected to the inner wall of the connecting hole 43; the connecting hole 43 serves as the connecting end of the connecting strip 422 on the one hand, and as an observation of the connection between the trapezoidal head 421 and the large round blind hole 3221 on the other hand.
[0030] The top ends of the clamping plate 4 are rounded 44 to avoid cutting workers during installation.
[0031] A descending step 8 is provided on both sides of the radial plate 32 to lower the position of the radial plate 32 and reduce the overall thickness of the insulating fan skirt; the axis of the through hole B 321 corresponds to the surface of the fan-shaped plate; the connecting surface of the adjacent radial rib 2 also corresponds to the fan-shaped plate; the axis of the flange bolt 5 corresponds to the position of the radial rib 2, so that the supporting force brought by the flange bolt 5 can be transmitted to the arc edge of the fan-shaped plate as smoothly as possible.
[0032] The working principle of this embodiment: the insulating fan skirt extends toward the center of the seat plate; the insulating fan skirt is made of insulating flexible material throughout; only a small part of the space above the seat plate is not blocked by the insulating fan skirt, which hinders birds from building nests; by rotating the insulating fan skirt relative to the central axis 012, the shielding range of the insulating fan skirt can be changed; the insulating fan skirt is made of insulating material epoxy resin, which has a certain flexibility; if no treatment is done, the arc-shaped edge of the insulating fan skirt will naturally tilt downward; the radiating rib 2 ensures the supporting effect to complete the coverage of the internal space of the disconnector to prevent birds from occupying and building nests. After installation, it is slightly tilted downward so that rainwater can be drained away in time to avoid water accumulation. The smooth arc surface of the radiating rib 2 can also be used to make it difficult for birds to gain a foothold on the radiating rib 2, increasing the difficulty of bird nesting; the cross-section of adjacent radiating ribs 2 is wavy so that both sides of the insulating fan skirt can be used to hinder bird nesting, and the installation can be selected according to the situation. Through the threaded cooperation of the flange bolt 5 and the flange nut 6, the tightening degree at the radial slit 31 can be adjusted, so that the hoop 3 hugs the central axis 012 and realizes the connection between the insulating fan skirt and the central axis 012; the clamping plate 4 increases the contact area of the flange bolt 5 and the flange nut 6 on the radial plate 32 to prevent the radial plate 32 from being damaged and the connection between the insulating fan skirt and the central axis 012 from failing. The buckle 42 cooperates with the buckle hole 322 to realize the connection between the clamping plate 4 and the radial plate 32, so that the clamping plate 4 and the insulating fan skirt are connected as a whole to prevent the loss of the clamping plate 4. The axis of the flange bolt 5 corresponds to the position of the radial rib 2, so that the supporting force brought by the flange bolt 5 is transmitted to the arc edge of the fan plate as smoothly as possible.
[0033] Example 2: See Fig.12 The second embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that a side edge of the insulating fan skirt is provided with an avoidance opening 9 corresponding to the operating insulator 02 to make room for the operation of the operating insulator 02.
[0034] The inner end of the bolt head of the flange bolt 5 and the inner end of the flange nut 6 are both provided with teeth distributed circumferentially, which can increase the friction force during connection and make the connection more stable.
Claims
1. An insulating fan skirt, characterized in that: The whole is a fan-shaped plate with a mounting hole at the end of its central angle; the area between the arc edge of the fan-shaped plate and the mounting hole is evenly distributed with a number of radiating ribs; the cross-section of a single radiating rib is arched; the cross-section of adjacent radiating ribs is wavy; the insulating fan skirt is made of insulating flexible material throughout.
2. The insulating fan skirt according to claim 1, characterized in that: The radiation rib is extended from the mounting hole to the arc edge.
3. The insulating fan skirt according to claim 1 is characterized in that: From the mounting hole to the arc edge, the width of the arched cross section of the radiating rib gradually increases, the height gradually decreases, and the thickness gradually becomes thinner.
4. The insulating fan skirt according to claim 1 is characterized in that: A coaxial hoop is provided at the mounting hole; the radiating ribs are connected to the side of the hoop.
5. The insulating fan skirt according to claim 4 is characterized in that: A radial slit is provided on the outward side of the hoop; radial plates parallel to the radial slit extend outward on both sides of the radial slit; the insulating fan skirt also includes two clamping plates, flange bolts, and flange nuts; the clamping plates are tightly attached to the outer walls of the radial plates; the clamping plates are provided with through holes A; the radial plates are provided with through holes B corresponding to and matching through holes A; the flange bolts pass through through holes A and through holes B and then cooperate with the flange nut threads.
6. The insulating fan skirt according to claim 5, characterized in that: Buckle holes are symmetrically arranged on both sides of through hole A; buckles cooperating with the buckle holes are symmetrically arranged on both sides of through hole B; the buckle holes include connected large round blind holes and small round through holes; the large round blind holes are arranged on the outer wall of the radial plate; the small round through holes are arranged on the inner wall of the radial plate; the buckles include connected trapezoidal heads and connecting strips; the tail end of the trapezoidal head is connected to the clamping plate through the connecting strip; the trapezoidal head cooperates with the large round blind hole; the connecting strip passes through the small round through hole.
7. The insulating fan skirt according to claim 6, characterized in that: The splint is provided with a connecting hole corresponding to the connecting strip; the tail end of the connecting strip is connected to the inner wall of the connecting hole.
8. The insulating fan skirt according to claim 5, characterized in that: Both sides of the radial plate are provided with descending steps; the axis of through hole B corresponds to the surface of the sector plate; and the connecting surface of adjacent radial ribs also corresponds to the sector plate.
9. The insulating fan skirt according to claim 1, characterized in that: One side of the insulating fan skirt is provided with a avoidance opening corresponding to the operating insulator.