CN214313866U - Lightning arrester for railway traction power supply system - Google Patents
Lightning arrester for railway traction power supply system Download PDFInfo
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- CN214313866U CN214313866U CN202120053879.1U CN202120053879U CN214313866U CN 214313866 U CN214313866 U CN 214313866U CN 202120053879 U CN202120053879 U CN 202120053879U CN 214313866 U CN214313866 U CN 214313866U
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- clamping block
- lightning
- lightning protection
- supply system
- power supply
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- 239000012212 insulator Substances 0.000 claims abstract description 14
- 241000883966 Astrophytum capricorne Species 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
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Abstract
A lightning protection device for a railway traction power supply system comprises a cantilever insulator, wherein terminals are arranged at two ends of the cantilever insulator, lightning protection components are sleeved on the two terminals, and the two lightning protection components are arranged in a mirror symmetry mode; the lightning protection assembly comprises a lightning arrester body, a fixing assembly and a containing seat, the fixing assembly is fixed on the outer wall of the terminal in a floating clamping mode, the lightning arrester body is vertically and fixedly arranged on the top surface of the fixing assembly, the containing seat is arranged at the top end of the lightning arrester body, claw electrodes are arranged in the containing seat, and an air gap is formed between the two claw electrodes which are arranged at intervals; the utility model discloses fixed as an organic whole between storage seat, arrester cylinder and the fixed subassembly, can realize laying of lightning arrester only need install the fixed subassembly of bottom can, need not the equipment of a plurality of parts, improve lightning arrester's installation effectiveness and bulk strength.
Description
Technical Field
The utility model belongs to the technical field of power supply system, in particular to a lightning arrester for railway traction power supply system.
Background
When a traditional circuit system is transformed, lightning arresters are required to be additionally arranged at two ends of the bracket insulator so as to improve the lightning-arrest effect; however, when the existing lightning arrester is installed, the lightning arrester main body and the clamping assembly at the bottom need to be assembled in a spiral mode, and the clamping assembly is installed on the terminal through the screw hoop, so that the lightning arrester is time-consuming and overlong to install, complex to operate and inconvenient for high-altitude operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the not enough of prior art existence, provide a lightning arrester for railway pulls power supply system, concrete technical scheme as follows:
a lightning protection device for a railway traction power supply system comprises a cantilever insulator, wherein terminals are arranged at two ends of the cantilever insulator, lightning protection components are sleeved on the two terminals, and the two lightning protection components are arranged in a mirror symmetry mode;
the lightning-arrest subassembly includes arrester body, fixed subassembly and storage seat, the outer wall of terminal is fixed in to the floating centre gripping of fixed subassembly, the top surface vertical fixation of fixed subassembly is equipped with the arrester body, the top of arrester body is equipped with the storage seat, the internally mounted of storage seat has the goat's horn electrode, forms air gap between two goat's horn electrodes that the interval set up.
Furthermore, the fixed assembly comprises a bottom plate, a first clamping block, a second clamping block and a spring, the lightning arrester body is vertically fixed on the surface of the bottom plate, the first clamping block and the second clamping block are arranged in a mirror symmetry mode, the first clamping block is vertically arranged at one end of the bottom surface of the bottom plate, a first sliding groove is formed in the other end of the bottom surface of the bottom plate, the spring is embedded in the first sliding groove and located on the other side, away from the first clamping block, of the second clamping block, and the first clamping block and the second clamping block are clamped and fixed on the terminal; the bottom outer wall of first clamp splice is equipped with first mounting panel, the bottom outer wall of second clamp splice is equipped with the second mounting panel, it is fixed through locking screw between first mounting panel, the second mounting panel.
Furthermore, the outer wall of the terminal is simultaneously in tangent fit with the bottom plate, the first clamping block and the second clamping block.
Furthermore, the first clamping block and the second clamping block form a U-shaped structure, and the U-shaped structure forms an omnibearing enclosure structure outside the terminal.
Furthermore, continuous second spout, third spout have been seted up to the inside of containing seat, and the internal diameter of second spout is less than the internal diameter of third spout, the inner of goat's horn electrode slides and runs through the second spout, the inner of goat's horn electrode is equipped with the cubic slider of side, the slider slides and imbeds in the third spout, the inside spiral embedding of third spout has adjusting screw, adjusting screw's the inner rotates the link block, adjusting screw is used for driving goat's horn electrode concertina movement.
The utility model has the advantages that:
1. the accommodating seat, the lightning arrester column body and the fixing component are fixed into a whole, so that the lightning arrester can be arranged only by installing the fixing component at the bottom end without assembling a plurality of components, and the installation efficiency and the overall strength of the lightning arrester are improved;
2. first clamp splice is fixed to be set up, and the second clamp splice slides and sets up, when preliminary centre gripping is fixed like this, only need slide adjusting the second clamp splice can, can realize like this to arrester pre-positioning fast, when adorning locking screw soon, the workman need not to hold on arrester again, and the operation is more simple and convenient laborsaving, satisfies high altitude construction's needs.
Drawings
Fig. 1 shows a schematic structural diagram of a lightning arrester for a railway traction power supply system according to the present invention;
fig. 2 shows a schematic structural view of the fixing assembly of the present invention;
fig. 3 shows a schematic view of the connection structure of the receiving seat and the claw electrode of the present invention;
shown in the figure: 1. a cantilever insulator; 11. a terminal; 2. a lightning arrester body; 3. a fixing assembly; 31. a base plate; 311. a first chute; 32. a first clamping block; 321. a first mounting plate; 33. a second clamp block; 331. a second mounting plate; 34. a spring; 35. locking the screw; 4. a storage seat; 41. a second chute; 42. a third chute; 5. a horn electrode; 51. a slider; 6. adjusting the screw rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a lightning arrester for a railway traction power supply system comprises a cantilever insulator 1, wherein terminals 11 are arranged at two ends of the cantilever insulator 1, lightning protection components are sleeved on two terminals 11, and the two lightning protection components are arranged in a mirror symmetry manner;
the lightning protection assembly comprises a lightning arrester body 2, a fixing assembly and a containing seat 4, the fixing assembly is fixed on the outer wall of the terminal 11 in a floating clamping mode, the lightning arrester body 2 is vertically and fixedly arranged on the top surface of the fixing assembly, the containing seat 4 is arranged at the top end of the lightning arrester body 2, claw electrodes 5 are arranged inside the containing seat 4, and an air gap is formed between the two claw electrodes 5 which are arranged at intervals; the storage seat can be used for positioning the claw electrode, and the fixing assembly can be used for quickly mounting the lightning arrester body on the cantilever insulator; meanwhile, the accommodating seat, the lightning arrester column body and the fixing component are fixed into a whole, so that the lightning arrester can be arranged only by installing the fixing component at the bottom end without assembling a plurality of components, and the installation efficiency and the overall strength of the lightning arrester are improved;
One terminal is a high-voltage terminal, the high-voltage terminal is communicated with a railway power supply system through a connecting fitting, the other terminal is a low-voltage terminal, and the low-voltage terminal is communicated with the stand column through the connecting fitting.
As shown in fig. 2, the fixing assembly includes a bottom plate 31, a first clamping block 32, a second clamping block 33 and a spring 34, the arrester body 2 is vertically fixed on the surface of the bottom plate 31, the first clamping block 32 and the second clamping block 33 are arranged in mirror symmetry, the first clamping block 32 is vertically arranged at one end of the bottom surface of the bottom plate 31, a first sliding slot 311 is formed at the other end of the bottom surface of the bottom plate 31, the spring 34 is embedded in the first sliding slot 311, the spring 34 is located at the other side of the second clamping block 32 away from the first clamping block 31, and the first clamping block 31 and the second clamping block 32 are clamped and fixed on the cantilever insulator 1; a first mounting plate 321 is arranged on the outer wall of the bottom end of the first clamping block 32, a second mounting plate 331 is arranged on the outer wall of the bottom end of the second clamping block 33, and the first mounting plate 321 and the second mounting plate 331 are fixed through a locking screw 35;
the second clamping block which is arranged in a sliding mode can realize preliminary positioning, and the locking screw can realize locking positioning;
first clamp splice is fixed to be set up, and the second clamp splice slides and sets up, when preliminary centre gripping is fixed like this, only need slide adjusting the second clamp splice can, can realize like this to arrester pre-positioning fast, when adorning locking screw soon, the workman need not to hold on arrester again, and the operation is more simple and convenient laborsaving, satisfies high altitude construction's needs.
The outer wall of the terminal 11 is simultaneously in tangential fit with the bottom plate 31, the first clamping block 32 and the second clamping block 33; utilize bottom plate, first clamp splice and second clamp splice to carry out trilateral linear support to the terminal, realize that lightning arrester and terminal are connected as an organic whole.
The first clamping block 32 and the second clamping block 33 form a U-shaped structure, and the U-shaped structure forms an omnibearing enclosure structure outside the terminal 11; the U-shaped structure can prevent the fixing component from being separated from the opening below.
A second sliding groove 41 and a third sliding groove 42 are continuously formed in the containing seat 4, the inner diameter of the second sliding groove 41 is smaller than that of the third sliding groove 42, the inner end of the claw electrode 5 penetrates through the second sliding groove 41 in a sliding manner, a square slider 51 is arranged at the inner end of the claw electrode 5, the slider 51 is embedded in the third sliding groove 42 in a sliding manner, an adjusting screw 6 is spirally embedded in the third sliding groove 42, the inner end of the adjusting screw 6 is rotatably connected with the slider 51, and the adjusting screw 6 is used for driving the claw electrode 5 to move in a telescopic manner; the claw electrode can be driven to move in a telescopic manner rapidly by rotating the adjusting screw rod, so that the air gap is changed, and the requirements of different insulation distances are met; the square-block-shaped sliding block can avoid the sliding block from rotating, so that the claw electrode is prevented from rotating, and the claw electrode is guaranteed to stably move in the radial direction, so that the structural size of the air gap cannot be changed.
The utility model discloses when implementing:
during assembly, the second clamping block 33 is pulled outwards, the second clamping block 33 can compress the spring 34 when being pulled outwards, and then the first clamping block 32 and the second clamping block 33 are clamped on the outer wall of the terminal in a holding manner, so that pre-positioning of the lightning arrester is realized; after pre-positioning is completed, the locking screw 35 is screwed to penetrate through the first mounting plate 321 and the second mounting plate 331, so that the first clamping block 32 and the second clamping block 33 are locked and fixed on the outer wall of the terminal;
the external extending length of the claw electrode 5 is adjusted, the adjusting screw 6 is rotated, the adjusting screw 6 drives the sliding block 51 to move along the third sliding groove 42 when rotating, and the claw electrode 5 is taken in the storage seat 4 along the second sliding groove 41.
When the traction power supply system normally operates, the air gap isolation system voltage forms a protection gap, the lightning arrester body does not bear voltage, and the aging problem under the long-term operation voltage is not considered, so that the reliability is greatly improved, and the maintenance cost is reduced; when the traction power supply system is struck by lightning, the lightning causes the traction power supply system to generate overvoltage, under the action of the overvoltage of the lightning, an air gap between the claw electrodes is broken down, the lightning arrester presents low impedance, the lightning flows through a discharge channel formed by the high-voltage side lightning arrester of the wrist-arm insulator, the air gap, the low-voltage side lightning arrester of the wrist-arm insulator and the stand column or the grounding wire and is discharged into the ground, and the claw electrodes bear arc ablation; after lightning impulse, power frequency voltage loads on the arrester body, and the resistance of the arrester body grow in the twinkling of an eye, and the electric current that passes through, namely arc current, is suppressed at lower numerical value, and air gap arc voltage drop increases, and air gap's insulation resumes rapidly, and electric arc extinguishes naturally in the very short time, and the power frequency afterflow is interrupted completely to the realization is protected and is pulled power supply system's purpose.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A lightning protection device for a railway traction power supply system is characterized in that: the lightning protection device comprises a cantilever insulator (1), wherein terminals (11) are arranged at two ends of the cantilever insulator (1), lightning protection components are sleeved on the two terminals (11), and the two lightning protection components are arranged in a mirror symmetry mode;
the lightning-arrest subassembly includes arrester body (2), fixed subassembly and storage seat (4), the floating centre gripping of fixed subassembly is fixed in the outer wall of terminal (11), the top surface vertical fixation of fixed subassembly is equipped with arrester body (2), the top of arrester body (2) is equipped with storage seat (4), the internally mounted of storage seat (4) has goat's horn electrode (5), forms air gap between two goat's horn electrodes (5) that the interval set up.
2. A lightning protection device for a railway traction power supply system according to claim 1, characterized in that: the lightning arrester comprises a bottom plate (31), a first clamping block (32), a second clamping block (33) and a spring (34), wherein the lightning arrester body (2) is vertically fixed on the surface of the bottom plate (31), the first clamping block (32) and the second clamping block (33) are arranged in a mirror symmetry mode, the first clamping block (32) is vertically arranged at one end of the bottom surface of the bottom plate (31), a first sliding groove (311) is formed in the other end of the bottom surface of the bottom plate (31), the spring (34) is embedded into the first sliding groove (311), the spring (34) is located on the other side, away from the first clamping block (32), of the second clamping block (33), and the first clamping block (32) and the second clamping block (33) are clamped and fixed on a terminal (11); the bottom outer wall of first clamp splice (32) is equipped with first mounting panel (321), the bottom outer wall of second clamp splice (33) is equipped with second mounting panel (331), it is fixed through locking screw (35) between first mounting panel (321), the second mounting panel (331).
3. A lightning protection device for a railway traction power supply system according to claim 2, characterized in that: the outer wall of the terminal (11) is simultaneously in tangent fit with the bottom plate (31), the first clamping block (32) and the second clamping block (33).
4. A lightning protection device for a railway traction power supply system according to claim 2, characterized in that: the first clamping block (32) and the second clamping block (33) form a U-shaped structure, and the U-shaped structure forms an all-directional enclosure structure outside the terminal (11).
5. A lightning protection device for a railway traction power supply system according to claim 1, characterized in that: continuous second spout (41), third spout (42) have been seted up to the inside of containing seat (4), and the internal diameter of second spout (41) is less than the internal diameter of third spout (42), the inner of goat's horn electrode (5) slides and runs through second spout (41), the inner of goat's horn electrode (5) is equipped with square massive slider (51), slider (51) slide embedding in third spout (42), the inside spiral embedding of third spout (42) has adjusting screw (6), connecting slide (51) are rotated to the inner of adjusting screw (6), adjusting screw (6) are used for driving goat's horn electrode (5) concertina movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120053879.1U CN214313866U (en) | 2021-01-11 | 2021-01-11 | Lightning arrester for railway traction power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120053879.1U CN214313866U (en) | 2021-01-11 | 2021-01-11 | Lightning arrester for railway traction power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214313866U true CN214313866U (en) | 2021-09-28 |
Family
ID=77823981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120053879.1U Expired - Fee Related CN214313866U (en) | 2021-01-11 | 2021-01-11 | Lightning arrester for railway traction power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214313866U (en) |
-
2021
- 2021-01-11 CN CN202120053879.1U patent/CN214313866U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |