A kind of novel GW9 isolating switch
Technical field
The utility model relates to electric power system application apparatus, particularly the novel GW9 isolating switch of one.
Background technology
Isolating switch (English name disconnector, be commonly called as " disconnecting link "), generally refer to high voltage isolator, be mainly used in outdoor AC 10-40.5kv, in 50HZ electric power system, carry out the charged high-tension line of load changing-over and isolate charged high-tension line with by the electrical isolation of the electric equipments such as the high voltage bus that overhauls or circuit breaker.The main feature of isolating switch is without arc extinguishing ability, can only divide, closing circuit when not having load current.The field such as the extensive suitable power of product, railway, mine, oil field.The principles and structure of itself is fairly simple, but due to use amount large, functional reliability requires high, all larger on the impact of the design of electric substation, power plant, foundation and safe operation.
Existing high voltage isolator comprises: two are vertically fixed on the insulation column on mounting panel, insulation column there is the cluster parachute that diameter is identical, insulation column is fixed with dynamic and static contact respectively, two insulation columns are also provided with the binding post corresponding with dynamic and static contact, wherein, what be connected with moving contact is the first binding post, what be connected with fixed contact is the second binding post, two disconnecting links are connected side by side between two contacts, one end of two disconnecting links is articulated with fixed contact, and the other end can close with moving contact or be separated.
Existing high voltage isolator structure has the following disadvantages:
1, to be flip-chip mounted latch performance unreliable for 90 °, existing market switch, easily occurs threading off, and 45 ° easily occur operating when tilting to install and unlock dropout situation simultaneously;
2, the connection of dynamic and static contact and corresponding wiring terminal is that non-Unitary is shaping, disconnecting link, contact are electrically connected with terminal and form loop, due to the impact of compactness connected between parts, increase the risk of return loss, cause the loop resistance of whole high voltage isolator larger; Meanwhile, the steady quality of contact part and these two part neither one entirety of wire connecting portion;
3, existing switch, contact knife spacing is narrow, is unfavorable for heat radiation, causes temperature rise too high, affect switch stable operation;
4, the cluster parachute existing isolation switch insulation column excircle having diameter identical, the adaptive capacity to environment of product and proof voltage grade are not very high.
Summary of the invention
For solving the technical problem of above-mentioned existence, the utility model provides a kind of novel GW9 isolating switch, Stability Analysis of Structures, and heat-sinking capability is strong, and whole device electric conductivity is good, superior in quality, and upside-down mounting latch performance is more reliable, and not easily thread off, operating state is safer.
In order to reach this object, the utility model is achieved through the following technical solutions:
A kind of novel GW9 isolating switch, be made up of the one pole of three the identical disjunctors be arranged on same base, each one pole is by operating mechanism, transmission mechanism, switch mechanism and conductive mechanism composition, described conductive mechanism includes and is vertically set on left post insulator on base and right post insulator, described left post insulator, right post insulator is fixed with respectively left junction block and right junction block, described left junction block is fixed with moving contact, described right junction block is fixed with fixed contact, disconnecting link is overlapped with between described moving contact and fixed contact, described disconnecting link one end is flexibly connected with fixed contact, the other end engages with moving contact and realizes closing a floodgate, described left junction block and moving contact, right junction block and fixed contact are all structure as a whole, described left junction block, right junction block is fixed for respectively the support clamping disconnecting link, described moving contact part is upwards horizontal trapezoid, described disconnecting link adopts pivot joint screw rod to be connected with the support of fixed contact one end, described screw rod two ends arrange spring respectively and press on disconnecting link, realize being connected with dividing of fixed contact.
This isolating switch is provided with upside-down mounting self-locking mechanism, described self-locking mechanism includes hook plate, torsion spring, clamp and limiting plate, described limiting plate is connected between fixed contact and right post insulator, described hook plate, clamp and limiting plate are interconnected to form buckle structure, described torsion spring is fixed between clamp and disconnecting link, adopts insulation hook rod to pull or push hook plate and realizes breaking-closing operating.
The trapezoidal periphery of described moving contact parts transversely is upwards provided with the arcuate guide structure vertical with disconnecting link extended line.
The overall outer surface of described moving contact is provided with graphite silver coating.
Described disconnecting link consists of two ends pinned connection the first disconnecting link and the second disconnecting link.
Described left post insulator and the periphery of right post insulator are provided with the cluster parachute of the different umbrella leaf composition of diameter, and the diameter of described cluster parachute alternately occurs along descending.
Moving contact, fixed contact design with corresponding junction block integrative-structure by the utility model respectively, add mechanical strength and the stability of equipment; Moving contact top is set to horizontal trapezoid and does navigation designing, adds the spacing between the first disconnecting link and the second disconnecting link, increases area of dissipation, is conducive to reducing temperature rise; Disconnecting link engages more tight with moving contact, improve the mechanical strength of contact knife, and the dynamic stability of switch improves; Devise upside-down mounting self-locking mechanism, upside-down mounting latch performance is more reliable, does not thread off; Rack-mount by bolt, and the one end be connected with fixed contact is for can divide connection, and by the contact of spring position and fixed contact, stability is strong, change contact knife in the past to contact can not well engage with the face of contact, contact is laterally placed, adds contact knife spacing, increasing heat radiation area, is conducive to reducing temperature rise; Contact knife engages more tight with contact, improve the mechanical strength of contact knife, the dynamic stability of switch is improved; Upside-down mounting latch performance is more reliable, does not thread off; Contact knife one end is rack-mount by bolt, and the other end of its contact contact knife can divide with fixed contact system and be connected, and contact knife contact maintains by two ends linking springs, and divide-shut brake has good limit function; Also improve adaptive capacity to environment of the present utility model, proof voltage grade, self-cleaning ability and anti-uv-ray simultaneously.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is the stereogram of the utility model (hiding a disconnecting link);
Fig. 3 is vertical view of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
Schematic diagram is as Figure 1-3 known, this novel GW9 isolating switch, be made up of the one pole of three the identical disjunctors be arranged on same base 3, each one pole is by operating mechanism, transmission mechanism, switch mechanism and conductive mechanism composition, described conductive mechanism includes and is vertically set on left post insulator 1 on base 3 and right post insulator 2, described left post insulator 1, right post insulator 2 is fixed with left junction block 4 and right junction block 5 respectively, described left junction block 4 is fixed with moving contact, described right junction block 5 is fixed with fixed contact, disconnecting link 6 is overlapped with between described moving contact and fixed contact, described disconnecting link 6 one end is flexibly connected with fixed contact, the other end engages with moving contact and realizes closing a floodgate, described left junction block 4 and moving contact, right junction block 5 is all structure as a whole with fixed contact, described left junction block 4, right junction block 5 is fixed for respectively the support clamping disconnecting link 6, described moving contact part is upwards horizontal trapezoid, described disconnecting link 6 adopts pivot joint screw rod to be connected with the support of fixed contact one end, described screw rod two ends arrange spring respectively and to press on disconnecting link 6 and to be provided with jam nut, realize being connected with dividing of fixed contact, .
As preferred mode, the trapezoidal periphery of described moving contact parts transversely is upwards provided with the arcuate guide structure vertical with disconnecting link 6 extended line.
More specifically, the overall outer surface of described moving contact is provided with graphite silver coating, guarantees reliable conductive.
As preferred mode, described disconnecting link 6 consists of two ends pinned connection the first disconnecting link and the second disconnecting link, and bearing pin plays folding position-limiting action.
As preferred mode, described left post insulator 1 and the periphery of right post insulator 2 are provided with the cluster parachute of the different umbrella leaf composition of diameter, and the diameter of described cluster parachute alternately occurs along descending.
As preferred mode, this isolating switch is provided with upside-down mounting self-locking mechanism, described self-locking mechanism includes hook plate 7, torsion spring 8, clamp 9 and limiting plate 10, described limiting plate 10 is connected between fixed contact and right post insulator 2, described hook plate 7, clamp 9 and limiting plate 10 are interconnected to form buckle structure, described torsion spring 8 is fixed between clamp 9 and disconnecting link 6, adopts insulation hook rod to pull or push hook plate 7 and realizes breaking-closing operating.
During separating brake, the hook rod that insulate pulls hook plate 7 to drive clamp 9 to pivot, and treat that clamp 9 rotates to extreme position, clamp 9 undercut and limiting plate 10 depart from, and insulation hooks rod and continues to pull hook plate 7, and disconnecting link 6 integral-rotation, is separated with right junction block 5.After disconnecting link 6 is separated with fixed contact, the pin 12 between disconnecting link 6 contacts with the support of fixed contact part, and disconnecting link 6 cannot continue downward turn, and separating brake puts in place.
During combined floodgate, insulation hooks rod promotion hook plate 7 and is with movable touch knife 6 to rotate, until clamp 9 groove rotates over limiting plate 10 along self round edge, and oppositely resets under the effect of reduction torsion spring 8, under making clamp 9 groove enter limiting plate, realizes self-locking.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection range of the present utility model.