CN220306157U - Outdoor high-voltage vacuum circuit breaker - Google Patents
Outdoor high-voltage vacuum circuit breaker Download PDFInfo
- Publication number
- CN220306157U CN220306157U CN202322373853.7U CN202322373853U CN220306157U CN 220306157 U CN220306157 U CN 220306157U CN 202322373853 U CN202322373853 U CN 202322373853U CN 220306157 U CN220306157 U CN 220306157U
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- China
- Prior art keywords
- insulating cylinder
- rod
- circuit breaker
- positioning part
- outdoor high
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses an outdoor high-voltage vacuum circuit breaker, which comprises a mechanism box, an operating mechanism, an insulating cylinder and a vacuum arc-extinguishing chamber, wherein the operating mechanism is arranged on the mechanism box; the operating mechanism is arranged in the mechanism box, the insulating cylinder is vertically fixed at the top of the mechanism box, the vacuum arc-extinguishing chamber is arranged at the top in the insulating cylinder, and the movable end of the vacuum arc-extinguishing chamber is connected with the operating mechanism through an insulating pull rod; a positioning part is arranged in the middle of the insulating cylinder, and a conductive rod is fixed in the positioning part; the positioning part is internally provided with a transverse perforation, the transverse perforation is internally provided with a limiting baffle table, the conducting rod is internally inserted into the transverse perforation from outside to inside, the conducting rod is provided with a stop step matched with the stop of the limiting baffle table, the inner end of the conducting rod extends into the insulating cylinder and is connected with the flexible connecting piece through a fastener, the end part of the flexible connecting piece is propped against the inner side wall of the insulating cylinder, and the conducting rod is provided with a locking sealing component at the outer end of the positioning part. The utility model has reasonable structural design, convenient and reliable assembly and good use performance.
Description
Technical Field
The utility model belongs to the field of structural design of vacuum circuit breakers, and particularly relates to an outdoor high-voltage vacuum circuit breaker.
Background
The ZW32 outdoor high-voltage vacuum circuit breaker (also called as an outdoor column vacuum switch) is suitable for a power system with three-phase alternating current of 50Hz and rated voltage of 12kV, and can break and close circuit load current, overload current and short-circuit current. The method is widely applied to line segmentation, protection and control of power distribution systems of substations, urban and rural power grids and industrial and mining enterprises, and is more suitable for rural power grids and places with frequent operation. The existing ZW32 outdoor high-voltage vacuum circuit breaker mainly comprises a mechanism box, an operating mechanism arranged in the mechanism box, three insulating cylinders fixed at the upper end of the mechanism box and a vacuum arc-extinguishing chamber arranged in the insulating cylinders, wherein a conducting rod is arranged in the middle of each insulating cylinder, one end of the conducting rod is connected with the movable end of the vacuum arc-extinguishing chamber through a flexible connecting piece, the other end of the conducting rod is used for connecting an external circuit, the operating mechanism drives the movable end of the vacuum arc-extinguishing chamber in the insulating cylinders to move up and down during switching on and switching off, and then a fixed contact in the vacuum arc-extinguishing chamber is controlled to contact and separate from the movable contact, so that the switching on and off of a circuit are realized. The current conducting rod in some outdoor high-voltage vacuum circuit breakers is installed on the insulating cylinder through the grafting mode, however, the positioning effect to the locating lever is relatively poor, leads to the locating lever to take place axial activity easily when in-service use, can further influence the leakproofness between locating lever and the location portion like this, and dust, rainwater get into easily, and then have influenced the performance of outdoor high-voltage vacuum circuit breaker, therefore its structure still can further optimize.
Disclosure of Invention
In view of the above, the utility model aims to provide an outdoor high-voltage vacuum circuit breaker with reasonable structure, and the upper conducting rod of the outdoor high-voltage vacuum circuit breaker is convenient and reliable to install.
The technical scheme for realizing the aim of the utility model is as follows:
the utility model provides an outdoor high-voltage vacuum circuit breaker which comprises a mechanism box, an operating mechanism, an insulating cylinder and a vacuum arc-extinguishing chamber, wherein the operating mechanism is arranged on the mechanism box;
the operating mechanism is arranged in the mechanism box, the insulating cylinder is vertically fixed at the top of the mechanism box, the vacuum arc-extinguishing chamber is arranged at the top in the insulating cylinder, and the movable end of the vacuum arc-extinguishing chamber is connected with the operating mechanism through an insulating pull rod;
a positioning part protruding outwards along the transverse direction is arranged in the middle of the insulating cylinder, a conducting rod arranged along the transverse direction is fixed in the positioning part, and the conducting rod is electrically connected with the movable end of the vacuum arc-extinguishing chamber through a flexible connecting piece;
the positioning part is internally provided with a transverse perforation, a limiting baffle is arranged in the transverse perforation, the conducting rod is inserted into the transverse perforation from outside to inside, a stop step matched with the limiting baffle is arranged on the conducting rod, the inner end of the conducting rod stretches into the insulating cylinder and is connected with the flexible connecting piece through a fastener, the end part of the flexible connecting piece is propped against the inner side wall of the insulating cylinder, and a locking sealing component is arranged at the outer end of the positioning part on the conducting rod.
Preferably, the fastener is a screw, a screw through hole is formed in the flexible connecting piece, a threaded hole is formed in the inner end of the conductive rod, and the screw is screwed with the threaded hole after passing through the screw through hole.
Preferably, the locking sealing member comprises a locking nut, a gasket and a sealing rubber ring which are sleeved on the conducting rod; the locking nut is in threaded connection with the conductive rod and compresses the gasket, and the sealing rubber ring is compressed between the positioning part and the conductive rod through the gasket so as to seal a gap between the conductive rod and the transverse perforation.
Preferably, an annular groove is arranged at the outer port of the transverse perforation, the circumferential inner wall of the annular groove is a conical surface with large outside and small inside, and the outer circumferential surface of the sealing rubber ring is a conical surface matched with the annular groove.
Preferably, the electric current transformer further comprises a current transformer sleeved on the conducting rod, an outlet terminal is connected to the outer end of the conducting rod in a threaded mode, the outlet terminal is used for propping against the current transformer, a rubber gasket is tightly pressed between the current transformer and the positioning part, a gap between the current transformer and the positioning part is sealed through the rubber gasket, and the lock nut is located on the inner side of the rubber gasket.
Preferably, a silica gel layer is arranged on the outer surface of the insulating cylinder, and a compression joint sealing part which is coated inwards on the bottom wall of the insulating cylinder is arranged at the lower end of the silica gel layer;
the crimping sealing part is pressed between the bottom end surface of the insulating cylinder and the upper surface of the mechanism box, a rubber sealing cover is arranged at the inner bottom of the insulating cylinder and is of an annular structure, the rubber sealing cover comprises an outer ring part, an inner ring part and a fold connecting part, the outer ring part is connected with the inner ring part through the fold connecting part, the outer wall of the outer ring part is tightly sleeved with the inner bottom end of the insulating cylinder, and the inner ring part is tightly sleeved with the insulating pull rod.
The utility model has the positive effects that: the outdoor high-voltage vacuum circuit breaker is optimized in structure, convenient to assemble and stable in working performance. When the electric conduction rod is assembled, the transverse perforation is inserted into the electric conduction rod from outside to inside, the limit stop table is abutted against the stop step to realize the limit of the inward stop when the electric conduction rod is inserted into the position, the inner end of the electric conduction rod is connected with the flexible connection through the fastener, the end part of the flexible connection piece is abutted against the inner side wall of the insulating cylinder to realize the limit of the outward stop, the locking sealing member is arranged at the outer end of the electric conduction rod, the electric conduction rod and the positioning part can be reliably positioned by further locking the locking sealing member, the electric conduction rod can not axially move, and the tightness of a gap between the electric conduction rod and the positioning part can be ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an outdoor high-voltage vacuum circuit breaker according to the present utility model;
fig. 2 is a top view of the outdoor high voltage vacuum circuit breaker of fig. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a partial enlarged view at B in FIG. 3;
FIG. 5 is a schematic view of the structure of the conductive rod, flexible connector and locking seal member of the present utility model when mated;
FIG. 6 is a schematic view of a rubber cover according to the present utility model.
The reference numerals shown in the figures are: 1-a mechanism box; 2-an operating mechanism; 3-an insulating cylinder; 31-a positioning part; 32-transverse perforations; 320-annular groove; 33-limiting baffle; 34-a silicone layer; 35-crimping the seal; 4-a vacuum arc extinguishing chamber; 41-moving end; 5-an insulating pull rod; 6-conducting rods; 61-stop step; 7-flexible connecting pieces; 71-fasteners; 8-locking the sealing member; 81-locking nuts; 82-a gasket; 83-sealing rubber rings; 9-a current transformer; 10-an outgoing line terminal; 11-rubber washers; 12-rubber capping; 121-an outer ring; 122-an inner ring portion; 123-fold connection.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model.
The outdoor high-voltage vacuum circuit breaker in the present embodiment, as shown in fig. 1 to 3, includes a mechanism case 1, an operating mechanism 2, an insulating cylinder 3, and a vacuum interrupter 4; the operating mechanism 2 is arranged in the mechanism box 1, the insulating cylinder 3 is vertically fixed at the top of the mechanism box 1, the vacuum arc-extinguishing chamber 4 is fixed at the inner top of the insulating cylinder 3, the movable end 41 of the vacuum arc-extinguishing chamber 4 is connected with the operating mechanism 2 through the insulating pull rod 5, the movable end 41 is driven to move up and down through the insulating pull rod 5 when the operating mechanism 2 acts, then a control circuit is switched on when a movable contact in the vacuum arc-extinguishing chamber 4 is controlled to be contacted with a fixed contact, and is switched off when the movable contact is separated from the fixed contact, the insulating pull rod 5 can connect the movable end 41 of the vacuum arc-extinguishing chamber 4 with the operating mechanism 2, and meanwhile, the current of the movable end 41 cannot be conducted to the operating mechanism 2 due to the insulativity of the insulating pull rod.
Referring to fig. 3 to 5, a positioning portion 31 protruding outwards in the transverse direction is provided in the middle of the insulating cylinder 3, a conductive rod 6 disposed in the transverse direction is fixed in the positioning portion 31, the conductive rod 6 is electrically connected with a movable end 41 of the vacuum arc extinguishing chamber 4 through a flexible connecting piece 7, the outer end of the conductive rod 6 is connected with an outgoing line terminal 10, and the static end of the vacuum arc extinguishing chamber 4 is connected with an incoming line terminal.
Further, a transverse perforation 32 is provided in the positioning portion 31, a limit stop 33 is provided in the transverse perforation 32, the conductive rod 6 is inserted into the transverse perforation 32 from outside to inside, the inner end of the transverse perforation 32 is provided on the inner side wall of the insulating cylinder 3, a stop step 61 matched with the stop of the limit stop 33 is provided on the conductive rod 6, the inner end of the conductive rod 6 extends into the insulating cylinder 3 and is connected with the flexible connector 7 through a fastener 71, the end of the flexible connector 7 abuts against the inner side wall of the insulating cylinder 3, a locking sealing member 8 is provided on the conductive rod 6 at the outer end of the positioning portion 31, when the conductive rod 6 is inserted into the positioning portion 31, the limit stop 33 abuts against the stop step 61 from outside to inside to realize the limit stop, the inner end of the conductive rod 6 is connected with the flexible connector 7 through the fastener 71, the end of the flexible connector 7 abuts against the inner side wall of the insulating cylinder 3, thereby the limit stop is outwards, a locking sealing member 8 is provided at the outer end of the conductive rod 6, and the locking sealing member 8 can ensure the positioning gap between the conductive rod 6 and the positioning portion 31 from outside to inside to outside, and the positioning gap can be ensured by further positioning the locking sealing member 6.
The fastening member 71 in this embodiment is a screw, the flexible connecting member 7 is provided with a screw hole, the inner end of the conductive rod 6 is provided with a threaded hole, and the screw is screwed with the threaded hole after passing through the screw hole.
As shown in fig. 4 and 5, the locking sealing member 8 includes a locking nut 81, a washer 82 and a sealing rubber ring 83 which are sleeved on the conductive rod 6; the locking nut 81 is in threaded connection with the conductive rod 6 and presses the gasket 82, and the sealing rubber ring 83 is pressed between the positioning part 31 and the conductive rod 6 through the gasket 82 so as to seal a gap between the conductive rod 6 and the transverse perforation 32; the sealing rubber ring 83 can be pressed when the locking nut 81 is screwed down, and meanwhile, an outward pulling force can be generated on the conducting rod 6, so that the end part of the flexible connecting piece 7 can be abutted against the inner side wall of the insulating cylinder 3, and the conducting rod 6 can be prevented from moving along the axial direction after the locking sealing member 8 is locked.
Furthermore, an annular groove 320 is disposed at the outer port of the transverse through hole 32, the circumferential inner wall of the annular groove 320 is a tapered surface with a large outer side and a small inner side, the outer circumferential surface of the sealing rubber ring 83 is a tapered surface matched with the annular groove 320, the sealing rubber ring 83 is tightly pressed in the annular groove 320, the sealing ring 83 is facilitated to enter the annular groove 320 through the cooperation of the annular groove 320 and the tapered surface of the sealing rubber ring 83, and the sealing effect of the sealing rubber ring 83 is ensured.
Referring to fig. 4, in some embodiments, the outdoor vacuum high-voltage circuit breaker is further provided with an external current transformer 9, current data is collected through the current transformer, the current transformer 9 is sleeved on the conducting rod 6, an outgoing terminal 10 is screwed at the outer end of the conducting rod 6, the outgoing terminal 10 is tightly abutted against the current transformer 9, a rubber gasket 11 is tightly pressed between the current transformer 9 and the positioning part 31, a gap between the current transformer 9 and the positioning part 31 is sealed through the rubber gasket 11, so that rainwater and dust are prevented from entering, the compactness of the structure is improved, and the locking nut 81 is positioned at the inner side of the rubber gasket 11.
In a further embodiment, a silica gel layer 34 is disposed on the outer surface of the insulating cylinder 3, and a pressure-welding sealing portion 35 is disposed at the lower end of the silica gel layer 34 and is coated on the bottom wall of the insulating cylinder 3; the pressure-contact sealing portion 35 is pressed between the bottom end surface of the insulating cylinder 3 and the upper surface of the mechanism case 1, thereby ensuring the sealing property between the insulating cylinder 3 and the mechanism case 1.
In order to further enhance the safety performance of the product, a rubber cover 12 is arranged at the inner bottom of the insulating cylinder 3, and as shown in fig. 3 and 6, the rubber cover 12 is in an annular structure and comprises an outer ring part 121, an inner ring part 122 and a fold connecting part 123, the outer ring part 121 is connected with the inner ring part 122 through the fold connecting part 123, the outer wall of the outer ring part 121 is tightly sleeved with the inner bottom of the insulating cylinder 3, the inner ring part 122 is tightly sleeved with the insulating pull rod 5, the inner cavity of the mechanism box 1 is effectively separated from the inner cavity of the insulating cylinder 3 through the rubber cover 12, and the fold connecting part 123 arranged on the rubber cover 12 is suitable for the up-down movement of the insulating pull rod 5; an annular groove is preferably provided on the outer wall of the insulating rod 5, which engages with the inner ring 122.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While those obvious variations or modifications which come within the spirit of the utility model remain within the scope of the utility model.
Claims (6)
1. An outdoor high-voltage vacuum circuit breaker comprises a mechanism box (1), an operating mechanism (2), an insulating cylinder (3) and a vacuum arc-extinguishing chamber (4);
the operating mechanism (2) is arranged in the mechanism box (1), the insulating cylinder (3) is vertically fixed at the top of the mechanism box (1), the vacuum arc-extinguishing chamber (4) is arranged at the inner top of the insulating cylinder (3), and the movable end (41) of the vacuum arc-extinguishing chamber (4) is connected with the operating mechanism (2) through the insulating pull rod (5);
a positioning part (31) protruding outwards along the transverse direction is arranged in the middle of the insulating cylinder (3), a conductive rod (6) arranged along the transverse direction is fixed in the positioning part (31), and the conductive rod (6) is electrically connected with a movable end (41) of the vacuum arc extinguishing chamber (4) through a soft connecting piece (7);
the electric wire is characterized in that a transverse perforation (32) is arranged in the positioning part (31), a limiting baffle (33) is arranged in the transverse perforation (32), the electric wire rod (6) is inserted into the transverse perforation (32) from outside to inside, a stop step (61) matched with the stop of the limiting baffle (33) is arranged on the electric wire rod (6), the inner end of the electric wire rod (6) stretches into the insulating cylinder (3) and is connected with the flexible connecting piece (7) through a fastening piece (71), the end part of the flexible connecting piece (7) is propped against the inner side wall of the insulating cylinder (3), and a locking sealing member (8) is arranged at the outer end of the positioning part (31) on the electric wire rod (6).
2. An outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that the fastening member (71) is a screw, the flexible connecting member (7) is provided with a screw hole, the inner end of the conducting rod (6) is provided with a screw hole, and the screw is screwed with the screw hole after passing through the screw hole.
3. An outdoor high voltage vacuum circuit breaker according to claim 1, characterized in that said locking sealing member (8) comprises a locking nut (81), a washer (82) and a sealing rubber ring (83) which are sleeved on the conducting rod (6); the locking nut (81) is in threaded connection with the conductive rod (6) and compresses the gasket (82), and the sealing rubber ring (83) is compressed between the positioning part (31) and the conductive rod (6) through the gasket (82) so as to seal a gap between the conductive rod (6) and the transverse perforation (32).
4. An outdoor high-voltage vacuum circuit breaker according to claim 3, characterized in that an annular groove (320) is arranged at the outer port of the transverse perforation (32), the circumferential inner wall of the annular groove (320) is a conical surface with large outside and small inside, and the outer circumferential surface of the sealing rubber ring (83) is a conical surface matched with the annular groove (320).
5. An outdoor high-voltage vacuum circuit breaker according to claim 3, further comprising a current transformer (9) sleeved on the conductive rod (6), wherein an outgoing terminal (10) is screwed at the outer end of the conductive rod (6), the outgoing terminal (10) is used for tightly propping the current transformer (9), a rubber gasket (11) is tightly pressed between the current transformer (9) and the positioning part (31), a gap between the current transformer (9) and the positioning part (31) is sealed through the rubber gasket (11), and the locking nut (81) is positioned at the inner side of the rubber gasket (11).
6. The outdoor high-voltage vacuum circuit breaker according to claim 1, wherein a silica gel layer (34) is arranged on the outer surface of the insulating cylinder (3), and a compression joint sealing part (35) which is coated inwards on the bottom wall of the insulating cylinder (3) is arranged at the lower end of the silica gel layer (34);
the crimping sealing part (35) is tightly pressed between the bottom end face of the insulating cylinder (3) and the upper surface of the mechanism box (1), a rubber sealing cover (12) is arranged at the inner bottom of the insulating cylinder (3), the rubber sealing cover (12) is of an annular structure and comprises an outer ring part (121), an inner ring part (122) and a fold connecting part (123), the outer ring part (121) is connected with the inner ring part (122) through the fold connecting part (123), the outer wall of the outer ring part (121) is tightly sleeved with the inner bottom end of the insulating cylinder (3), and the inner ring part (122) is tightly sleeved with the insulating pull rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322373853.7U CN220306157U (en) | 2023-08-31 | 2023-08-31 | Outdoor high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322373853.7U CN220306157U (en) | 2023-08-31 | 2023-08-31 | Outdoor high-voltage vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306157U true CN220306157U (en) | 2024-01-05 |
Family
ID=89353604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322373853.7U Active CN220306157U (en) | 2023-08-31 | 2023-08-31 | Outdoor high-voltage vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306157U (en) |
-
2023
- 2023-08-31 CN CN202322373853.7U patent/CN220306157U/en active Active
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