CN218514080U - Voltage abnormity safety device - Google Patents
Voltage abnormity safety device Download PDFInfo
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- CN218514080U CN218514080U CN202221382947.XU CN202221382947U CN218514080U CN 218514080 U CN218514080 U CN 218514080U CN 202221382947 U CN202221382947 U CN 202221382947U CN 218514080 U CN218514080 U CN 218514080U
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Abstract
The utility model provides a voltage abnormity safeties belongs to power transmission technical field, and the safety housing, safe subassembly locates the inside department of safety housing, wherein: the safety assembly comprises a sealing plate, a mounting groove, a main clamping ring, a secondary clamping ring and a constraint shell, the sealing plate is hinged to the edge of the inner wall of the safety shell, the mounting groove is formed in the inner wall of the sealing plate, and the constraint shell is hinged to the outer wall of the sealing plate. In this scheme, the device inserts switch board inlet wire circuit breaker lower extreme, main ac contactor upper end, automatic cutout switch board power supply can in time cut off the power supply when voltage anomaly risees in the secondary circuit with main ac contactor of circuit access, ensure that other equipment do not receive the high-voltage destruction in the switch board, when needs carry out the protective tube and change, open the closing plate, through the pulling about board, with main joint ring and inferior joint ring, can make the protective tube break away from electric connection, avoid the electric shock accident.
Description
Technical Field
The utility model belongs to the technical field of power transmission, concretely relates to voltage abnormity safeties.
Background
The power cable without the armor has the problems of cable phase line and work zero line crust breaking caused by mouse bite or other reasons, the cable trench can be caused to enter water when the cable encounters rainy weather in the cable trench, the crust breaking position is immersed in water, the setting value of a plastic shell switch matched with the power cable is generally larger, so that the crust breaking position is immersed in water under many conditions, but the plastic shell switch cannot trip, the work zero line and the phase line are easy to be short due to the fact that the power cable is broken, the work zero line is electrified, the voltage of single-phase electric equipment in a power distribution cabinet of a cable terminal can be increased and exceeds the rated voltage range, and the single-phase electric equipment is burnt.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a voltage abnormity safeties aims at solving the problem that the background art provided.
In order to achieve the above object, the utility model provides a following technical scheme:
a voltage abnormality safety device includes a voltage source,
a fuse housing;
the safe subassembly is located the inside department of insurance shell, wherein: the safety assembly comprises a sealing plate, a mounting groove, a main clamping ring, a secondary clamping ring and a constraint shell, the sealing plate is hinged to the edge of the inner wall of the safety shell, the mounting groove is formed in the inner wall of the sealing plate, the constraint shell is hinged to the outer wall of the sealing plate, the main clamping ring is fixedly arranged on the inner wall of the mounting groove, and the secondary clamping ring is fixedly arranged on the inner wall of the constraint shell;
a voltage detection circuit; locate the inside department of insurance shell, wherein: the voltage detection circuit comprises a protective tube, a voltage dependent resistor and a relay, the protective tube is electrically connected with a live wire, the voltage dependent resistor is electrically connected with the protective tube, the relay is connected with the voltage dependent resistor in parallel, and the relay is electrically connected with the voltage dependent resistor in a grounding wire.
Furthermore, the inner wall of the safety shell is fixedly provided with a circuit board.
Furthermore, the cross section of the restraint shell is arc-shaped, and the outer wall of the restraint shell is provided with an observation hole.
Furthermore, a mounting hole is formed in one side of the outer wall of the safety shell, and a sealing tank is embedded in one side of the outer wall of the safety shell through the mounting hole.
Furthermore, the cross sections of the main clamping ring and the secondary clamping ring are arc-shaped, and the openings of the main clamping ring and the secondary clamping ring are arranged oppositely.
Furthermore, the main clamping ring and the secondary clamping ring are matched with the protective tube.
Compared with the prior art, the beneficial effects of the utility model are that:
in this scheme, the device inserts switch board inlet wire circuit breaker lower extreme, main ac contactor upper end, automatic cutout switch board power supply can in time cut off the power supply when voltage anomaly risees in the secondary circuit with main ac contactor of circuit access, ensure that other equipment do not receive the high-voltage destruction in the switch board, when needs carry out the protective tube and change, open the closing plate, through the pulling about board, with main joint ring and inferior joint ring, can make the protective tube break away from electric connection, avoid the electric shock accident.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a perspective view of the present invention;
fig. 2 is a first perspective view of the sealing plate of the present invention;
fig. 3 is a second perspective view of the sealing plate of the present invention;
fig. 4 is a schematic diagram of the circuit connection of the present invention.
In the figure: 1. a fuse housing; 2. a sealing plate; 3. a sealing tube; 4. mounting grooves; 5. a primary snap ring; 6. A secondary snap ring; 7. a constraining shell; 8. a fuse tube; 9. a voltage dependent resistor; 10. a relay; 101. a circuit board.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Referring to fig. 1-4, the technical solution provided in this embodiment is as follows:
a voltage abnormality safety device includes a voltage source,
a fuse housing 1;
the safe subassembly is located the inside department of insurance shell 1, wherein: the safety assembly comprises a sealing plate 2, a mounting groove 4, a main clamping ring 5, a secondary clamping ring 6 and a constraint shell 7, the sealing plate 2 is hinged to the edge of the inner wall of the safety shell 1, the mounting groove 4 is formed in the inner wall of the sealing plate 2, the constraint shell 7 is hinged to the outer wall of the sealing plate 2, the main clamping ring 5 is fixedly arranged on the inner wall of the mounting groove 4, and the secondary clamping ring 6 is fixedly arranged on the inner wall of the constraint shell 7;
a voltage detection circuit; is arranged at the inner part of the fuse shell 1, wherein: the voltage detection circuit comprises a protective tube 8, a piezoresistor 9 and a relay 10, wherein the protective tube 8 is electrically connected with a live wire, the piezoresistor 9 is electrically connected with the protective tube 8, the relay 10 is connected with the piezoresistor 9 in parallel, and the relay 10 and the piezoresistor 9 are electrically connected with a grounding wire.
In the embodiment of the present invention, the safety assembly is adopted to realize the rapid installation of the fuse 8, during the disassembly process, the maintainer is prevented from directly contacting the fuse 8, the possibility of electric shock is eliminated, and the restraint shell 7 is utilized to realize the stable contactless operation of the fuse 8, the three-phase live wire passes through the fuse 8FU1, FU2 and FU3 respectively, and then is connected with the piezoresistor 9RV1, RV2 and RV3 respectively and the parallel circuit composed of the relay 10KI, K2 and K3 in series, under the normal voltage condition, K1, K2 and K3 are all attracted, the loop 2 composed of the auxiliary normally open contacts of the relay 10K1, K2 and K3 is in the conducting state, the loop 3 composed of the auxiliary normally closed contacts of the relay 10K1, K2 and K3 is in the disconnecting state, when the zero line is electrified to cause the rising of one or more circuits of voltage, the resistance value of the piezoresistor 9 is rapidly reduced, the loop current is increased to cause the fuse tube 8 to be fused, the loop 2 consisting of the relay 10K1, the relay K2 and the relay K3 auxiliary normally open contacts is in a disconnected state, the loop 3 consisting of the relay 10K1, the relay K2 and the relay K3 auxiliary normally closed contacts is in a conducting state, the device is connected to the lower end of an incoming line circuit breaker of a control cabinet and the upper end of a main alternating current contactor, the secondary circuit of connecting main ac contactor with the return circuit can realize that the automatic cutout switch board power supply can in time cut off the power supply when voltage anomaly risees, ensures that other equipment do not receive the high voltage destruction in the switch board, when needing to carry out the protective tube 8 and change, opens closing plate 2, through the about plate of pulling, with main joint ring 5 and secondary joint ring 6, can make protective tube 8 break away from electric connection.
Specifically, the inner wall of the safety housing 1 is fixedly provided with a circuit board 101.
In the embodiment of the present invention, through the circuit board 101, efficient deployment of the electronic components can be realized.
Specifically, the cross section of the restraint shell 7 is arc-shaped, and the outer wall of the restraint shell 7 is provided with an observation hole.
In the embodiment of the present invention, the protective tube 8 can be stably protected by the constraining case 7.
Specifically, the mounting hole has been seted up to the outer wall one side of insurance shell 1, and the sealed tube 3 has been inlayed through the mounting hole in the outer wall one side of insurance shell 1.
The utility model discloses an in the embodiment, through sealed tube 3, can guarantee the insulating nature of live wire and ground wire.
Specifically, the cross sections of the main clamping ring 5 and the secondary clamping ring 6 are arc-shaped, and the openings of the main clamping ring 5 and the secondary clamping ring 6 are arranged oppositely.
The utility model discloses an in the embodiment, the cross section through main joint ring 5 and inferior joint ring 6 all is circular-arc, can laminate in the link of protective tube 8.
Specifically, the primary snap ring 5, the secondary snap ring 6 and the fuse tube 8 are matched with each other.
The utility model discloses an in the embodiment, match each other through main joint ring 5, inferior joint ring 6 and protective tube 8, can realize the installation of efficient protective tube 8 and dismantle.
The utility model provides a pair of voltage abnormity safeties's working process does:
the three-phase live wire passes through the protective tube 8FU1, FU2 and FU3 respectively, then is connected with the piezoresistors 9RV1, RV2 and RV3 respectively in series with the parallel circuit consisting of the relays 10KI, K2 and K3, under the condition of normal voltage, K1, K2 and K3 are attracted, the loop 2 consisting of the auxiliary normally open contacts of the relays 10K1, K2 and K3 is in a conducting state, the loop 3 consisting of the auxiliary normally closed contacts of the relays 10K1, K2 and K3 is in a disconnecting state, when the zero line is electrified to cause the rise of one or more paths of voltage of the circuit, the resistance value of the piezoresistor 9 is rapidly reduced, the loop current is increased to cause the fusing of the protective tube 8, and the loop 2 consisting of the auxiliary normally open contacts of the relays 10K1, K2 and K3 is in a disconnecting state, by relay 10K1, K2, return circuit 3 that K3 supplementary normally closed contact is constituteed is in the on-state, insert the device switch-in control cabinet inlet wire circuit breaker lower extreme, main ac contactor upper end, automatic cutout control cabinet power supply can in time cut off the power supply when voltage anomaly risees when the secondary circuit with return circuit switch-in main ac contactor can realize voltage anomaly, ensure that other equipment do not receive the high voltage to destroy in the switch board, when needs carry out the protective tube 8 and change, open closing plate 2, through pulling the bounding plate, with main joint ring 5 and inferior joint ring 6, can be so that protective tube 8 breaks away from electric connection.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A voltage abnormality safety device is characterized by comprising,
a fuse housing (1);
the safety component is arranged inside the safety shell (1), wherein: the safety assembly comprises a sealing plate (2), a mounting groove (4), a main clamping ring (5), a secondary clamping ring (6) and a constraint shell (7), the sealing plate (2) is hinged to the edge of the inner wall of the safety shell (1), the mounting groove (4) is formed in the inner wall of the sealing plate (2), the constraint shell (7) is hinged to the outer wall of the sealing plate (2), the main clamping ring (5) is fixedly arranged on the inner wall of the mounting groove (4), and the secondary clamping ring (6) is fixedly arranged on the inner wall of the constraint shell (7);
a voltage detection circuit; is arranged at the inner part of the fuse shell (1), wherein: the voltage detection circuit comprises a protective tube (8), a piezoresistor (9) and a relay (10), wherein the protective tube (8) is electrically connected with a live wire, the piezoresistor (9) is electrically connected with the protective tube (8), the relay (10) is connected with the piezoresistor (9) in parallel, and the relay (10) is electrically connected with the piezoresistor (9) in a grounding wire.
2. A voltage anomaly safety device according to claim 1, characterized in that the inner wall of the safety housing (1) is fixedly provided with a circuit board (101).
3. The voltage abnormity safety device according to claim 2, wherein the cross section of the restraint shell (7) is arc-shaped, and the outer wall of the restraint shell (7) is provided with an observation hole.
4. The voltage abnormity safety device according to claim 3, wherein a mounting hole is formed on one side of the outer wall of the safety shell (1), and the sealing can (3) is embedded on one side of the outer wall of the safety shell (1) through the mounting hole.
5. A voltage anomaly safety device according to claim 4, characterized in that the cross section of said primary snap ring (5) and the cross section of said secondary snap ring (6) are circular arc-shaped, and the openings of said primary snap ring (5) and said secondary snap ring (6) are arranged opposite to each other.
6. A voltage safety device according to claim 5, characterized in that the primary snap ring (5), the secondary snap ring (6) and the fuse tube (8) are matched to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382947.XU CN218514080U (en) | 2022-05-01 | 2022-05-01 | Voltage abnormity safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382947.XU CN218514080U (en) | 2022-05-01 | 2022-05-01 | Voltage abnormity safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218514080U true CN218514080U (en) | 2023-02-21 |
Family
ID=85204606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221382947.XU Active CN218514080U (en) | 2022-05-01 | 2022-05-01 | Voltage abnormity safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218514080U (en) |
-
2022
- 2022-05-01 CN CN202221382947.XU patent/CN218514080U/en active Active
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