CN218676914U - Isolating switch with full-sealing structure - Google Patents
Isolating switch with full-sealing structure Download PDFInfo
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- CN218676914U CN218676914U CN202223197993.5U CN202223197993U CN218676914U CN 218676914 U CN218676914 U CN 218676914U CN 202223197993 U CN202223197993 U CN 202223197993U CN 218676914 U CN218676914 U CN 218676914U
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Abstract
The utility model relates to a full seal structure isolator wholly adopts the three-phase box structure, and high-tension bushing business turn over line, full seal shell, inside SF6 gas that fills, isolator are located in the middle of the jar body, and horizontal fracture, outside are equipped with the divide-shut brake and instruct, and the optional earthing switch module in jar body both ends realizes single double-ground connection requirement, also can increase equipment such as mutual-inductor, arrester according to the user's requirement and constitute open-type combined electrical apparatus. The isolating switch is provided with an electric/manual operating mechanism to realize switching-on and switching-off operation. The isolating switch with the full-sealing structure can solve the problems of abnormal heating and jamming of a transmission part of a traditional open isolating switch, wherein the conductive part of the traditional open isolating switch is easily affected by the environment, and the operation reliability of the isolating switch is greatly improved.
Description
Technical Field
The utility model relates to a high tension switchgear technical field, in particular to full seal structure isolator.
Background
The outdoor open type high-voltage isolating switch is in a severe environment, and particularly, the problems of abnormal heating of a conductive part and abnormal sticking of a transmission part are remarkable, and even a discharge phenomenon can be generated in severe conditions, so that the conductive part is burnt. The corrosion, vulcanization, abrasion and falling of the contact surface of the contact of the isolating switch are main factors causing the increase of contact resistance, and the silver coating of the contact is very easy to cause abnormal heating, jamming and other faults due to the corrosion of sulfides. The defects of the transmission open-type isolating switch bring great hidden dangers to the safe and stable operation of power transmission and transformation, which becomes a difficult problem which puzzles users of a power grid for many years.
Disclosure of Invention
In order to solve the technical problem, the utility model relates to a full seal structure isolator, its technical scheme is:
the whole isolating switch adopts an A, B and C three-phase box separating structure, each box separating structure is supported by a steel bracket (17), the top of the steel bracket supports an upper main conductive shell (5) and a transmission case shell (6) through a lower cross beam (16) and an upper cross beam (15), and the isolating switch is characterized in that,
the main cutter mechanism is positioned below the phase A;
an electric mechanism (18) is arranged on a steel support of the phase A box separating structure, a vertical connecting rod (14) of the electric mechanism and a main cutter swing arm (10) coaxially rotate, one end of the main cutter swing arm (10) is coaxially coupled with one end of a main force pull rod (3) and one end of a locking pull rod (11) respectively, the other end of the main force pull rod is hinged with a driving crank arm (4), the other end of the driving crank arm is fixedly connected with a rotating shaft (27), and a driven crank arm (32) is coaxially arranged on the rotating shaft; one end of the locking pull rod (11) is fixedly connected with the locking swing arm (12) through a fixed shaft, and the limiting plate (13) is fixed on the horizontal connecting rod (23) of the ground cutter;
two sides of the main conductive shell are respectively provided with an insulating sleeve which is an inlet wire side insulating sleeve (2) and an outlet wire side insulating sleeve (9); the inside of the insulating sleeve is communicated with the inside of the main conductive shell; a driven crank arm, a guide rod cover plate, an insulating pull rod, a moving contact, a moving side conductive assembly and a static side conductive assembly are arranged in the shell;
a moving contact (37) is fixed at the front end of an insulating pull rod (36), the rear end of the insulating pull rod is connected with a guide rod cover plate (33) through a connecting seat (28), a brake separating limit block (34) is installed at the front end of the guide rod cover plate, an insulating slide block (35) capable of sliding up and down is installed at the tail end of a driven crank arm, and the insulating slide block is arranged in the connecting seat (28);
an incoming side electric guide rod (30) and a shielding cover (31) are arranged inside the incoming side insulating sleeve, and an outgoing side electric guide rod (43) and a shielding cover (31) are arranged inside the outgoing side insulating sleeve; when the main conductor is in a brake-off state, the incoming line side conductor pole (30) is connected with the movable side conductor assembly (41), and the outgoing line side conductor pole (43) is connected with the static side conductor assembly (42); the front end of the static side conductive assembly is a static side contact finger; when the switch-on state moves, the insulating pull rod and the moving contact move along a straight line and are inserted into the static side conductive assembly, and the moving contact is clamped by the static side contact finger (40) to complete the switch-on action;
the ground cutter mechanism is positioned below the phase C;
one end of the ground knife swing arm is fixed on the C-phase main conductive shell (5), the other end of the ground knife swing arm (21) is hinged with one end of a ground knife pull rod (22), and the other end of the ground knife pull rod is fixedly connected with a ground knife horizontal connecting rod through a U-shaped hoop.
Furthermore, the incoming line side wiring terminal (1) is exposed out of the incoming line side insulating sleeve (2), and the outgoing line side wiring terminal (7) is exposed out of the outgoing line side insulating sleeve (9).
Further, the ground cutter is fixed on the horizontal connecting rod of the ground cutter and rotates along with the rotation of the horizontal connecting rod of the ground cutter.
Furthermore, the main conductive shell and the transmission shell are fully sealed shells, SF6 gas or environment-friendly gas is filled in the main conductive shell and the transmission shell, and an adsorbent device (44) is arranged in the main conductive shell and the transmission shell.
The utility model has the advantages that: the utility model relates to a full seal structure isolator wholly adopts the three-phase box structure, and high-tension bushing business turn over line, the totally enclosed casing, inside SF6 gas that fills, isolator are located in the middle of the jar body, and horizontal fracture, outside are equipped with the divide-shut brake and instruct, and the optional earthing switch module in jar body both ends realizes single double ground requirement, also can increase equipment such as mutual-inductor, arrester according to the user's requirement and constitute open-type combined electrical apparatus. The isolating switch is provided with an electric/manual operating mechanism to realize switching-on and switching-off operation. The isolating switch with the full-sealing structure can solve the problems of abnormal heating and jamming of a transmission part of a traditional open isolating switch, wherein the conductive part of the traditional open isolating switch is easily affected by the environment, and the operation reliability of the isolating switch is greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
as shown in the figure, 1 incoming line side terminal, 2 incoming line side insulating sleeve, 3 main knife pull rod, 4 driving crank arm, 5 main conductive shell, 6 transmission case shell, 7 outgoing line side terminal, 8 grounding knife static contact, 9 outgoing line side insulating sleeve, 10 main knife swing arm, 11 locking pull rod, 12 locking swing arm, 13 limiting plate, 14 vertical connecting rod, 15 upper beam, 16 lower beam, 17 steel support, 18 electric mechanism, 19 opening and closing indicating device, 20 density relay and inflation valve, 21 grounding knife swing arm, 22 grounding knife pull rod, 23 grounding knife horizontal connecting rod, 24 grounding knife, 25 main knife horizontal connecting rod, 26U-shaped hoop, 27 rotating shaft, 28 connecting seat, 30 incoming line side conductive pole, 31 shielding cover, 32 driven crank arm, 33 guide pole cover plate, 34 limiting pad, 35 insulating slide block, 36 insulating pull rod, 37, 38 moving side conductive finger, 39 observation window, 40 static side conductive finger, 41 moving side conductive assembly, 42 outgoing line side conductive assembly, 43 conductive side conductive lead, 44 adsorbent side conductive pole.
Detailed Description
Example 1
As shown in the figure, the utility model relates to a full seal structure isolator relates to a 110kV is full seal structure isolator for power supply line. Wherein the wire inlet side insulating sleeve 2 is fixed at the upper left of the main conductive shell 5; the outgoing side insulating sleeve 9 is fixed at the upper right of the main conductive shell 5; the steel bracket 17 supports the upper conductive part through the lower beam 16 and the upper beam 15; an electric mechanism 18 fixed on the steel bracket 17 is connected with a transmission element in the transmission case shell 6 through a vertical connecting rod 14, a main cutter swing arm 10, a main cutter pull rod 3 and a driving crank arm 4, and the electric mechanism 18 has a manual operation function.
As shown in fig. 2, the whole isolating switch adopts an a, B and C three-phase box separating structure, wherein the main knife mechanism is positioned below the a phase; the three-phase main conductive switching-on and switching-off actions realize the connection transmission function through the rotating shaft 27, the U-shaped hoop 26 and the main knife horizontal connecting rod 25; the grounding switch part is designed, the whole grounding switch adopts an outdoor open structure, a grounding knife mechanism is positioned below a phase C, and the grounding knife swing arm 21, the grounding knife pull rod 22 and the grounding knife horizontal connecting rod 23 are connected with one another to rotate, so that the opening and closing actions of a grounding knife 24 are realized; a mechanical locking device is arranged between the main ground blades, when the main blade swing arm 10 rotates, the locking pull rod 11 and the locking swing arm 12 are driven to rotate, and the function that the ground blades cannot be switched on at the main blade switching-on position and the main blades cannot be switched on at the ground blade switching-on position is achieved through the locking plate 13. The density relay and the gas charging valve 20 are arranged outside the shell, SF6 gas is filled in the shell, the rated pressure is 0.3MPa, the locking device is arranged in the density relay and the mechanism control loop, when the internal pressure is less than 0.1MPa, locking is realized, and the switch can not be switched on.
As shown in fig. 3, the main conductor is in a switching-off state, a wire-inlet side conducting rod 30 and a shielding case 31 are arranged inside the wire-inlet side insulating sleeve 2 and connected with the movable side conducting assembly 41; an outgoing side conducting rod 43 is designed inside the outgoing side insulating sleeve 9 and is connected with the static side conducting assembly 42; the front end of an insulating pull rod 36 is fixedly connected with a movable contact 37, the tail end of the insulating pull rod is connected with a conductive rod cover plate 33 through a connecting block 28, an insulating slide block 35 capable of sliding up and down is installed at the tail end of a driven crank arm 32 (the insulating slide block 35 is installed on the connecting block 28), impact of a switching-on transverse component on the conductive rod and a switching-off transverse component on the conductive rod can be reduced, and a limiting pad 34 is designed at the switching-off terminal position; when the driven crank arm 32 rotates, under the action of the guide rod cover plate 33, the insulating pull rod 36 is pushed to move linearly, the movable contact 37 is installed at the front part of the insulating pull rod 36, the movable contact finger 38 ensures reliable contact with the movable contact 37, when the switch-on movement is performed, the insulating pull rod 36 pushes the movable contact 37 to move linearly and insert into the static conductive assembly 42, and the static contact finger 40 provides reliable contact clamping force to complete the switch-on movement; the shell is provided with an observation window 39, the fracture of the isolating switch is clearly visible during opening, and an opening and closing indicating device 19 is designed at the position of the driving crank arm 4 outside the transmission case shell 6; sorbent means 44 are designed into the main conductive housing 5 to absorb moisture from the SF6 gas and toxic decomposition products from the arcing event.
The utility model discloses a use method as follows:
when the isolating switch is switched on, the electric mechanism 18 rotates to output torque to drive the main knife pull rod 3 to rotate through the vertical connecting rod 14 and the main knife connecting lever 10, the main knife pull rod 3 rotates to drive the driving connecting lever 4 and the rotating shaft 27 to rotate, and meanwhile, the main knife horizontal connecting rod 25 connected through the U-shaped hoop 26 rotates along with the rotating shaft 27 to realize three-phase conductive synchronous action; the driven crank arm 32 connected with the rotating shaft 27 rotates to push the insulating pull rod 36, the insulating pull rod 36 pushes the movable contact 37 to move along a straight line and insert into the static side conductive assembly 42, and the static side contact finger 40 provides reliable contact clamping force to complete the closing action. When the main power switch of the grounding switch is in a switch-off position, the grounding knife swing arm 21 drives the grounding knife pull rod 22 to rotate, the grounding knife horizontal connecting rod 23 rotates along with the grounding knife swing arm, the grounding knife 24 is switched on, and the grounding knife static contact 8 is communicated with the grounding knife 24, so that the circuit grounding function is realized; a mechanical locking device is arranged between the main ground cutters, when the main cutter swing arm 10 rotates, the locking pull rod 11 and the locking swing arm 12 are driven to rotate, and the function that the ground cutters cannot be switched on at the main cutter switching-on position and the main cutters cannot be switched on at the ground cutter switching-on position is achieved through the locking plate 13.
After the disconnecting switch is switched on, the wiring terminal 1 on the wire inlet side is connected into a circuit loop, and current flows out through the wiring side conducting pole 30, the movable side conducting assembly 41, the static side conducting assembly 42 and the wire outlet side conducting pole 43 and finally through the wiring terminal 7 on the wire outlet side.
Example 2
The difference from example 1 is that: the utility model discloses not only be applicable to 110kV power supply line, still can be according to the on-the-spot needs, the full seal structure isolator of 35kV-550kV different voltage levels is followed in the design to satisfy the full seal structure isolator demand of different voltage levels power supply line.
Compared with the prior art, the invention has the advantages that:
(1) the conductive part of the isolating switch is completely sealed in the insulating chamber, so that the reliability is high, and the maintenance amount is low;
(2) the whole assembly and debugging in a factory are realized, and the quality control is good;
(3) the whole transportation, hoisting, installation and debugging are simple, convenient and quick;
(4) the field wiring is clear, simple and compact.
The conventional isolating switch is characterized in that technical parameters, interface sizes and secondary control of the product are aligned, the conventional isolating switch is of a three-phase box-separating structure, high-voltage sleeve inlet and outlet wires and a fully-sealed shell are integrally adopted, SF6 gas or environment-friendly gas is filled in the isolating switch, the isolating switch is positioned in the middle of a tank body, a horizontal fracture is formed, opening and closing indications are arranged outside the isolating switch, grounding switch modules can be selected at two ends of the tank body, single-double grounding requirements are met, and devices such as a mutual inductor and a lightning arrester can be added according to user requirements to form an open type combined electrical appliance. The isolating switch is provided with an electric/manual operating mechanism to realize switching-on and switching-off operation. When the circuit needs to flow through, the electric mechanism acts to drive the three-phase transmission part to rotate, so that the closing of the contact and the contact finger in the fully-sealed tank body is realized, and the circuit realizes the flow through. When the through-flow is not needed, the contact and the contact finger in the fully-sealed tank body are separated, and the internal insulation and the external insulation are realized through the high-voltage bushing and the insulation fracture in the switch shell. The isolating switch with the full-sealing structure can solve the problems of abnormal heating and jamming of a transmission part of a traditional open isolating switch, wherein the conductive part of the traditional open isolating switch is easily affected by the environment, and the operation reliability of the isolating switch is greatly improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (4)
1. A full-sealing structure isolating switch integrally adopts an A, B and C three-phase box separating structure, each box separating structure is supported by a steel support (17), the top of the steel support supports an upper main conductive shell (5) and a transmission case shell (6) through a lower cross beam (16) and an upper cross beam (15), and is characterized in that a main knife mechanism is positioned below the A phase;
an electric mechanism (18) is arranged on a steel support of the phase A box separating structure, a vertical connecting rod (14) of the electric mechanism and a main cutter swing arm (10) coaxially rotate, one end of the main cutter swing arm (10) is coaxially coupled with one end of a main force pull rod (3) and one end of a locking pull rod (11) respectively, the other end of the main force pull rod is hinged with a driving crank arm (4), the other end of the driving crank arm is fixedly connected with a rotating shaft (27), and a driven crank arm (32) is coaxially arranged on the rotating shaft; one end of the locking pull rod (11) is fixedly connected with the locking swing arm (12) through a fixed shaft, and the limiting plate (13) is fixed on the horizontal connecting rod (23) of the ground cutter;
two sides of the main conductive shell are respectively provided with an insulating sleeve which is an inlet wire side insulating sleeve (2) and an outlet wire side insulating sleeve (9); the inside of the insulating sleeve is communicated with the inside of the main conductive shell; a driven crank arm, a guide rod cover plate, an insulating pull rod, a moving contact, a moving side conductive assembly and a static side conductive assembly are arranged in the shell;
a moving contact (37) is fixed at the front end of an insulating pull rod (36), the rear end of the insulating pull rod is connected with a guide rod cover plate (33) through a connecting seat (28), a brake separating limit block (34) is installed at the front end of the guide rod cover plate, an insulating slide block (35) capable of sliding up and down is installed at the tail end of a driven crank arm, and the insulating slide block is arranged in the connecting seat (28);
an incoming side electric guide rod (30) and a shielding cover (31) are arranged inside the incoming side insulating sleeve, and an outgoing side electric guide rod (43) and a shielding cover (31) are arranged inside the outgoing side insulating sleeve; when the main conductor is in a brake-off state, the incoming line side conductor pole (30) is connected with the movable side conductor assembly (41), and the outgoing line side conductor pole (43) is connected with the static side conductor assembly (42); the front end of the static side conductive assembly is a static side contact finger; when the switch-on state moves, the insulating pull rod and the moving contact move along a straight line and are inserted into the static side conductive assembly, and the moving contact is clamped by the static side contact finger (40) to complete the switch-on action;
the ground cutter mechanism is positioned below the phase C;
one end of the ground knife swing arm is fixed on the C-phase main conductive shell (5), the other end of the ground knife swing arm (21) is hinged with one end of a ground knife pull rod (22), and the other end of the ground knife pull rod is fixedly connected with a ground knife horizontal connecting rod through a U-shaped hoop.
2. The isolating switch with the full-sealed structure as claimed in claim 1, wherein the incoming side terminal (1) is exposed out of the incoming side insulating sleeve (2), and the outgoing side terminal (7) is exposed out of the outgoing side insulating sleeve (9).
3. The isolating switch of claim 1, wherein the ground knife is fixed to the horizontal connecting rod of the ground knife and rotates with the rotation of the horizontal connecting rod of the ground knife.
4. The isolator switch of claim 1, wherein said main conductive housing and said transmission housing are fully sealed housings filled with SF6 gas or environmental gas and containing adsorbent means (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223197993.5U CN218676914U (en) | 2022-11-29 | 2022-11-29 | Isolating switch with full-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223197993.5U CN218676914U (en) | 2022-11-29 | 2022-11-29 | Isolating switch with full-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218676914U true CN218676914U (en) | 2023-03-21 |
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ID=85542148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223197993.5U Active CN218676914U (en) | 2022-11-29 | 2022-11-29 | Isolating switch with full-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218676914U (en) |
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2022
- 2022-11-29 CN CN202223197993.5U patent/CN218676914U/en active Active
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