CN215067206U - Anti-interference small current grounding line selection device - Google Patents
Anti-interference small current grounding line selection device Download PDFInfo
- Publication number
- CN215067206U CN215067206U CN202120947656.XU CN202120947656U CN215067206U CN 215067206 U CN215067206 U CN 215067206U CN 202120947656 U CN202120947656 U CN 202120947656U CN 215067206 U CN215067206 U CN 215067206U
- Authority
- CN
- China
- Prior art keywords
- resistance
- fixedly connected
- shell
- selection device
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an anti-interference undercurrent ground connection route selection device, which comprises an outer shell, one side fixedly connected with signal pipe of shell, the inside one side fixedly connected with route selection ware of shell, the inside fixed mounting of shell has resistance, one side fixed mounting of resistance has the controller, the bottom movable mounting of resistance has the protective housing. The utility model discloses a signal pipe receives the overcurrent that comes from single-phase fault ground connection for resistance begins the nonlinear change, and the protective housing leads overcurrent direction insulation board input insulation spring, and then makes the wire post produce electromagnetic suction and upwards adsorbs the joint with the earth connection post, has realized that the overcurrent intercommunication earth connection post that will pass through resistance inputs ground, has solved the short circuit overcurrent that ground connection route selection device received single-phase ground fault and has produced and has caused the problem of damage to resistance.
Description
Technical Field
The utility model relates to an electrical equipment technical field specifically is an anti-interference undercurrent ground connection route selection device.
Background
The anti-interference small current grounding line selection device is a protection device used in the power industry, is generally placed in a single-phase grounding line selection system with a 3kv-66kv neutral point ungrounded or a center point grounded through a resistor and an arc suppression coil, is used for power supply systems of large-scale factory enterprises such as transformer substations, power plants, hydropower stations, chemical engineering and the like of a power system, and can indicate a line which sends out a single-phase grounding fault.
The existing anti-interference small-current grounding line selection device still has some defects: firstly, the distribution network in China is a low-current system, the operation mode of the system is changed frequently, the length and the number of outgoing lines of a transformer substation are changed frequently, the capacitance current and the harmonic current of the system are also changed frequently, the voltage level of a bus is high or low, the load current is always changed continuously, electromagnetic interference of different degrees is caused to a controller in a grounding line selection device, and the controller is easy to damage; secondly, the distribution line is short, the capacitance of the line to the ground is small, when a single-phase ground fault occurs, the impact of short-circuit current on the resistor inside the grounding line selection device is large, the change of the resistor is nonlinear change, and the resistor is easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides an anti-interference undercurrent ground connection route selection device.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The utility model provides an anti-interference undercurrent ground connection route selection device, includes the shell, one side fixedly connected with signal tube of shell, the inside one side fixedly connected with route selection ware of shell, the inside fixed mounting of shell has resistance, one side fixed mounting of resistance has the controller, the bottom movable mounting of resistance has the protective housing, the bottom fixedly connected with terminal of resistance both sides and the inboard that is located the protective housing, the middle fixedly connected with insulation board of terminal, the middle movable mounting of insulation board has the wire post, insulating spring has been cup jointed in the outside activity at wire post top, the below movable mounting of wire post has the ground connection post.
Preferably, both sides fixed mounting of controller has the metal ring frame, and bottom one side fixedly connected with conductive contact of metal ring frame, flexible spout have been seted up to the inboard of metal ring frame, and swing joint has the telescopic link between the flexible spout, the anti-interference shell fragment of outside fixedly connected with of telescopic link, the net is rolled up to the inboard fixedly connected with metal of anti-interference shell fragment.
Preferably, the metal ring frame is memory metal, and when receiving the electric current to switch on and make the telescopic link slide in flexible spout and expand, anti-interference shell fragment outside fixedly connected with tooth groove form arch, the metal is rolled up the net and is made the metal mesh three-dimensional more holes that have for curled metal mesh.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses a signal pipe receives the overcurrent that comes from single-phase fault ground connection for resistance begins the nonlinear change, and the protective housing leads overcurrent direction insulation board input insulation spring, and then makes the wire post produce electromagnetic suction and upwards adsorbs the joint with the earth connection post, has realized that the overcurrent intercommunication earth connection post that will pass through resistance inputs ground, has solved the short circuit overcurrent that ground connection route selection device received single-phase ground fault and has produced and has caused the problem of damage to resistance.
The utility model discloses a conductive contact makes the metal ring frame stretch out and draw back the telescopic link in flexible spout with constantly changing electric current input metal ring frame, and then drives anti-interference shell fragment and expand and fold, and the metal mesh of net is rolled up to the metal is three-dimensional forms more holes, and the outside of anti-interference shell fragment itself has anti-electromagnetic interference's ability, and the hole that the net was rolled up to the metal produces electromagnetic vortex and offsets external electromagnetic interference, has solved the problem that the electric current change produced electromagnetic interference and damages the controller.
Drawings
Fig. 1 is a schematic view of the whole structure of the grounding line selector of the present invention;
FIG. 2 is a schematic view of the inside of the structure of the grounding line selector of the present invention;
fig. 3 is an enlarged schematic view of the section of the resistor protection structure of the present invention;
fig. 4 is an enlarged schematic view of the anti-electromagnetic interference structure of the present invention.
In the figure: 1. a housing; 2. a signal tube; 3. a wire selector; 4. a resistance; 5. a controller; 6. a protective shell; 7. a binding post; 8. an insulating plate; 9. a conductive post; 10. an insulating spring; 11. a ground terminal; 12. a metal ring frame; 13. a conductive contact; 14. a telescopic chute; 15. a telescopic rod; 16. an anti-interference elastic sheet; 17. a metal rolled net.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides an anti-interference undercurrent ground connection route selection device, the concrete structure is as shown in fig. 1 to 4, which comprises an outer shell 1, one side fixedly connected with signal pipe 2 of shell 1, one side fixedly connected with route selection ware 3 of shell 1 inside, the inside fixed mounting of shell 1 has resistance 4, one side fixed mounting of resistance 4 has controller 5, resistance 4's bottom movable mounting has protective housing 6, the bottom fixedly connected with terminal 7 of resistance 4 both sides and be located the inboard of protective housing 6, the middle fixedly connected with insulation board 8 of terminal 7, insulation board 8's middle movable mounting has wire column 9, insulation spring 10 has been cup jointed in the outside activity at wire column 9 top, wire column 9's below movable mounting has ground connection post 11. Will accept single-phase earth fault's overcurrent through resistance 4, terminal 7 inserts overcurrent into insulation board 8 and inputs insulating spring 10 and makes wire column 9 produce electromagnetic suction and adsorb 11 joints of ground connection terminal in the bottom of wire column 9, has realized that the overcurrent is by leading-in underground, avoids the overcurrent to cause the damage to resistance 4.
The both sides fixed mounting of controller 5 has metal ring frame 12, and fixedly connected with conductive contact 13 in bottom one side of metal ring frame 12, flexible spout 14 has been seted up to the inboard of metal ring frame 12, and swing joint has telescopic link 15 between the flexible spout 14, the anti-interference shell fragment 16 of outside fixedly connected with of telescopic link 15, the net 17 is rolled up to the inboard fixedly connected with metal of anti-interference shell fragment 16. The current through input conductive contact 13 is of different magnitudes, and metal ring frame 12 receives the electric current and begins to make telescopic link 15 flexible in flexible spout 14, and then makes anti-interference shell fragment 16 extend and fold along with the electric current size, offsets electromagnetic interference, and 17 meshes of metal roll net form electromagnetic eddy current and offset electromagnetic interference, avoid controller 5 to receive electromagnetic interference.
The metal ring frame 12 is made of memory metal, when the telescopic rod 15 slides and expands in the telescopic chute 14 when being conducted by current, the outer side of the anti-interference elastic sheet 16 is fixedly connected with a tooth-shaped groove-shaped bulge, and the metal rolling net 17 is a curled metal net so that metal meshes are three-dimensional and have more holes. The tooth space bulge on the outer side of the anti-interference elastic sheet 16 has a certain anti-electromagnetic interference effect, the metal rolling net 17 is three-dimensional, so that more metal meshes are formed, and the electromagnetic eddy current formed among the meshes is ensured to offset the external electromagnetic interference.
The signal tube 2 is subjected to the short-circuit current of the single-phase earth fault, so that the current flowing through the resistor 4 is suddenly increased, the binding post 7 leads the overcurrent to the insulating spring 10 to wind the wire column 9, so that the electromagnetic attraction is generated to adsorb the earth wire column 11 to the bottom of the wire column 9 for clamping. Lead-in insulating spring 10 of overcurrent through terminal 7 for the powerful electromagnetic force of winding wire post 9 formation attracts ground wire post 11 to overcome self gravity and upwards block to the bottom of wire post 9, makes the overcurrent be leading-in underground, avoids the overcurrent to cause the damage to resistance 4.
Claims (3)
1. Anti-interference undercurrent ground connection route selection device, including shell (1), one side fixedly connected with signal pipe (2) of shell (1), one side fixedly connected with route selection ware (3) of shell (1) inside, the inside fixed mounting of shell (1) has resistance (4), one side fixed mounting of resistance (4) has controller (5), its characterized in that: the bottom movable mounting of resistance (4) has protective housing (6), the bottom fixedly connected with terminal (7) of resistance (4) both sides just is located the inboard of protective housing (6), the middle fixedly connected with insulation board (8) of terminal (7), the middle movable mounting of insulation board (8) has wire post (9), insulating spring (10) have been cup jointed in the outside activity at wire post (9) top, the below movable mounting of wire post (9) has ground connection post (11).
2. The anti-jamming low-current grounding line selection device according to claim 1, characterized in that: the controller comprises a controller (5), metal ring frames (12) are fixedly mounted on two sides of the controller (5), conductive contacts (13) are fixedly connected to one side of the bottoms of the metal ring frames (12), telescopic chutes (14) are formed in the inner sides of the metal ring frames (12), telescopic rods (15) are movably connected between the telescopic chutes (14), anti-interference elastic pieces (16) are fixedly connected to the outer sides of the telescopic rods (15), and metal rolling nets (17) are fixedly connected to the inner sides of the anti-interference elastic pieces (16).
3. The anti-jamming low-current grounding line selection device according to claim 2, characterized in that: the metal ring frame (12) is made of memory metal, when the metal ring frame is conducted by current, the telescopic rod (15) slides and expands in the telescopic sliding groove (14), the outer side of the anti-interference elastic sheet (16) is fixedly connected with a tooth-shaped groove-shaped bulge, and the metal rolling net (17) is a curled metal net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120947656.XU CN215067206U (en) | 2021-05-06 | 2021-05-06 | Anti-interference small current grounding line selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120947656.XU CN215067206U (en) | 2021-05-06 | 2021-05-06 | Anti-interference small current grounding line selection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215067206U true CN215067206U (en) | 2021-12-07 |
Family
ID=79108722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120947656.XU Active CN215067206U (en) | 2021-05-06 | 2021-05-06 | Anti-interference small current grounding line selection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215067206U (en) |
-
2021
- 2021-05-06 CN CN202120947656.XU patent/CN215067206U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104779604A (en) | Neutral ground resistor cabinet | |
| CN215067206U (en) | Anti-interference small current grounding line selection device | |
| CN201054500Y (en) | Direction ground arc-elimination and cable selection suite device | |
| CN110048335A (en) | A kind of switchgear | |
| CN203260936U (en) | Voltage transformer handcart with lightning arrester | |
| CN104112999B (en) | A kind of solid insulation ring main unit | |
| CN106253122A (en) | A kind of Cubicle Gas-Insulated Switchgear | |
| CN204905168U (en) | Be used for superconductive current -limiting formula direct current breaker | |
| CN103560501A (en) | Controlled type small-resistor arc extinction device and method | |
| CN203660298U (en) | 220kV GIS line-outgoing structure | |
| CN210273277U (en) | Wind field case becomes structure | |
| CN209641511U (en) | A kind of current transformer preventing suspended voltage | |
| CN209282645U (en) | Protection type high pressure compensation cabinet | |
| CN107240884B (en) | Distribution device HGIS equipment's arrangement structure | |
| CN113363808B (en) | Outdoor switch cabinet | |
| CN202076712U (en) | Intelligent high/low-voltage power distribution unit | |
| CN216560840U (en) | Medium resistance type line selection structure for small current line selection device | |
| CN201466477U (en) | Neutral point gap device of digital substation | |
| CN204668772U (en) | Distribution box | |
| CN216250537U (en) | 24kV isolation and grounding integrated indoor high-voltage vacuum circuit breaker | |
| CN210985246U (en) | Low-voltage cabinet of wind power generation box-type substation | |
| CN219627218U (en) | Voltage transformer handcart for high-voltage switch cabinet body | |
| CN211719501U (en) | Gas-filled cabinet circuit breaker with combined structure | |
| CN109961991A (en) | A kind of surge protector convenient for assembly | |
| CN219477248U (en) | Switch cabinet contact joint protection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |