CN113871245A

CN113871245A - Outdoor high-voltage closed isolating switch with temperature measuring, switching-on indication and power assisting functions

Info

Publication number: CN113871245A
Application number: CN202111235005.9A
Authority: CN
Inventors: 文世彬; 杨靖雯; 张军强; 于渤然; 周小茗; 余朝洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2021-12-31
Anticipated expiration: 2041-10-22
Also published as: CN113871245B

Abstract

The invention relates to the technical field of power systems, in particular to an outdoor high-voltage closed isolating switch with switching-on indication and power assistance functions in a temperature measuring zone. The automatic wire-outgoing device comprises a base, insulators, a wire-incoming contact box, a wire-outgoing contact box and movable contact knives, wherein 2 insulators are symmetrically arranged at two ends of the upper surface of the base, the lower ends of the wire-incoming contact box and the wire-outgoing contact box are respectively fixed at the upper end of each insulator, the movable contact knives are hinged to the outer side of the wire-outgoing contact box, the movable contact knives are in close contact with fixed contacts arranged in the wire-incoming contact box and the wire-outgoing contact box when in a closed state, and the wire-incoming contact box and one side surface of the wire-outgoing contact box are respectively provided with a wiring terminal. The isolating switch is used for solving the problems that the isolating switch in the prior art is easy to be subjected to virtual closing and false closing when being switched on, so that the contact part is heated, and the isolating switch in the prior art is difficult to measure the temperature of the contact part, so that the overhauling difficulty of operation and maintenance personnel is increased.

Description

Outdoor high-voltage closed isolating switch with temperature measuring, switching-on indication and power assisting functions

Technical Field

The invention relates to the technical field of power systems, in particular to an outdoor high-voltage closed isolating switch with switching-on indication and power assistance functions in a temperature measuring zone.

Background

The outdoor high-voltage isolating switch is widely applied to distribution lines and plays a role in isolation or branching. For example, patent No. CN201810954312.4 "an electric power safety isolating switch", includes an isolating switch main body, a rotating mechanism, a handle, a driving mechanism, a connecting mechanism and an isolating switch control mechanism; the isolating switch control mechanism is arranged on the outer wall of the isolating switch main body and used for controlling the on-off of the isolating switch; the isolating switch control mechanism is connected with the driving mechanism through the connecting mechanism, the driving mechanism is used for driving the isolating switch control mechanism to rotate, and the connecting mechanism is used for adjusting the position of the driving mechanism; the driving mechanism is in threaded connection with the rotating mechanism, and the rotating mechanism is used for driving the driving mechanism to rotate; the lateral wall of slewing mechanism is equipped with the handle, the handle is used for people's handheld operation, and the isolator disclosed in the above-mentioned patent is though can realize the control to the isolator break-make, and easy and simple to handle, and can improve the security of using, but is difficult to make maintainer know the interior temperature of isolator and whether closing a floodgate target in place.

In addition, although a switch product protected by the full-insulation material on the surface of the live part appears on the market, the actual contact area of a contact is small, virtual closing, false closing and the like easily occur during operation on a rod, an operator can not distinguish whether the switch is closed in place by naked eyes at a distance of 3-5 meters away from equipment under the rod, when a problem occurs, heating of the contact part is inevitably caused to increase the temperature, the contact is sealed in an insulation sheath, the temperature of the contact can not be observed and measured by an infrared gun, and the workload and the difficulty of line maintenance personnel are increased.

Disclosure of Invention

Aiming at the defects of the technology, the invention aims to provide an outdoor high-voltage closed isolating switch with a temperature measuring function and switching-on indication and power assisting function, which is used for solving the problems that the isolating switch in the prior art is easy to be subjected to false switching and false switching during switching-on, so that a contact part is heated, and the isolating switch in the prior art is difficult to measure the temperature of the contact part, so that the overhauling difficulty of operation and maintenance personnel is increased.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a temperature measuring outdoor high-voltage closed isolating switch with switching-on indication and power assistance comprises a base, insulators, an incoming line contact box, an outgoing line contact box and movable contact knives, wherein 2 insulators are vertically and symmetrically arranged on the upper surface of the base, the lower ends of the incoming line contact box and the outgoing line contact box are respectively fixed at the upper ends of the insulators, the inner parts of the incoming line contact box and the outgoing line contact box are provided with fixed contacts, the movable contact knives are hinged to the outer side of the outgoing line contact box, the movable contact knives are simultaneously in close contact with the fixed contacts in the incoming line contact box and the outgoing line contact box when in a closed state, one side surfaces of the incoming line contact box and the outgoing line contact box are respectively provided with a connecting terminal, the connecting terminals respectively extend to the inner parts of the incoming line contact box and the outgoing line contact box to be in close contact with the fixed contacts, and the outer sides of the incoming line contact box and/or the outgoing line contact box are provided with temperature measuring devices, the probe of the temperature measuring device extends to the inside of the contact box, the incoming line contact box is provided with a closing indicating device, the switching-on indicating device comprises a push block, a rotating shaft and an indicating disc, wherein one end of the rotating shaft is positioned inside the wire inlet contact box, the other end of the rotating shaft is positioned outside the wire inlet contact box, the push block and one end of the rotating shaft positioned at the wire inlet contact box are fixedly connected, the indicating disc is fixedly connected with the other end of the rotating shaft, the movable contact knife drives the push block to rotate when the switch-on operation is carried out, the two ends of the movable contact knife are both provided with cover plates, the inner sides of the cover plates are provided with sealing rubber strips, when the movable contact knife is in a closed state, the cover plate respectively seals the upper parts of the incoming line contact box and the outgoing line contact box, the cover plate and the movable contact knife jointly form a structure of a sealed U-shaped groove, an insulating shell is arranged on the outer side of the movable contact knife, and at least the part of the movable contact knife, which is positioned outside the U-shaped groove in the closed state, is coated by the shell. The working principle of the temperature measuring device and the closing indicating device in the technical scheme is as follows:

and when the movable contact knife is inserted into the fixed contact to a certain depth, the front end of the movable contact knife pushes a push block of the indicating device to rotate, and when the indicating disc faces the outgoing line contact box, the movable contact knife is switched on in place and is fully contacted with the fixed contact, so that the situations of virtual switching, false switching, incomplete switching and the like are avoided.

The temperature measuring device, the probe one end position inlet wire contact box that the temperature measuring device front end set up and the inside and the static contact of the contact box of being qualified for the next round of competitions, when the temperature that probe response contact produced, the dial plate in the gauge outfit is rotatory, can observe its inside temperature variation.

Further, the base is manufactured by integral forming, and the base has the beneficial effect of effectively reducing the deformation of the base.

The movable contact knife is further limited to be cylindrical, the fixed contact is U-shaped, and the elastic sheet for enabling the movable contact knife to be in close contact with the fixed contact is arranged on the outer side of the fixed contact, so that the movable contact knife has the advantages that the arc surface of the circular tube is in line contact with the plane of the fixed contact, the problem that the existing isolating switch is small in contact area and easy to accumulate dirt due to the fact that plane contact is adopted is avoided, the penetrating capability of the existing isolating switch on the surface oxide layer is enhanced, secondary processing is avoided for the arc surface of the circular tube, cost and energy are saved, and economy is good; the round parts of the front end and the rear end of the movable contact knife are extruded into the U-shaped groove of the static contact, and the elastic sheet outside the static contact is stressed to form a reverse force to press the contact, so that the movable contact and the static contact are ensured to be in close contact.

Further limit, be equipped with the installation piece on the contact box of being qualified for the next round of competitions, one end of movable contact sword is equipped with the connecting block, the connecting block articulates on the installation piece, and its beneficial effect lies in, such connection mode is simple relatively, can reduce cost.

The movable contact switch is characterized in that the spring in the telescopic rod is compressed to store energy when the movable contact knife is switched on, when the operating rod drives the movable contact knife to rotate to pass through a vector point, the compressed spring energy in the telescopic rod is released, an operator only needs a small thrust to fully push the movable contact knife into the fixed contact, the operation difficulty of the operator during switching on can be reduced, and meanwhile, the switching-on effect is guaranteed.

Further inject, the inside of inlet wire contact box and outlet wire contact box is equipped with the metal inserts, the metal inserts passes through bolted connection together with binding post, static contact and insulator, and its beneficial part lies in, effectively fixes the contact box, can also guarantee under the high temperature condition, can not produce stress looseness because of outlet wire contact box and inlet wire contact box material become soft and cause the connection between binding post and the static contact, fully guarantees that static contact and binding post have good electrical contact performance.

Further inject, the inside upwards protruding flange that is equipped with of the upper surface of inlet wire contact box and the contact box of being qualified for the next round of competitions, the outside in U type groove is equipped with the guiding gutter, and its beneficial part lies in, and the guiding gutter lets the rainwater along guiding gutter outflow contact box, avoids conducting part and rainwater contact to produce the corruption, and the flange of contact box upper end and apron upper sealing strip cooperation make contact box form the enclosure space and effectively prevent inside the rainwater gets into contact box.

Further limit, the movable contact knife insulating shell is provided with a baffle or a convex ring for shielding and/or closing the U-shaped groove, and the movable contact knife insulating shell has the advantages that the baffle or the convex ring is arranged, so that the sealing effect of the movable contact knife on the notch of the U-shaped groove can be further improved.

The temperature measuring device is characterized in that the meter head comprises a meter disc shell and a meter disc, a V-shaped transparent window is arranged on the meter disc shell, the meter disc is divided into different color areas according to different temperatures, the color of the meter disc is green at 0-60 ℃, yellow at 61-90 ℃ and red at 91-120 ℃, when the temperature changes, the meter disc rotates, the color of the temperature display at the moment can be observed in real time through the V-shaped window, the green is normal temperature, the yellow is temperature early warning and the red is temperature exceeding, and the temperature measuring device has the advantages that the temperature of a contact in the operation process is measured in real time, and an operation and maintenance person can observe the temperature indication area of the temperature meter disc to accurately judge whether the product operates normally and can accurately judge the position of a line fault.

Further inject, be equipped with the stand in the green zone of dial plate, the upper end of stand is equipped with the arc shell fragment, be equipped with on the dial plate shell and stir the pivot, stir the pivot and be connected through one-way bearing with the dial plate shell, stir through the key-type connection between pivot and the one-way bearing, and the inner circle of one-way bearing is equipped with a plurality of keyways, stir the one end that the pivot is located dial plate shell inside and be equipped with the ratchet, stir the pivot and be located one of dial plate shell outside and serve the pointer, and the dial plate shell of pointer lower part is equipped with the count dish on the surface, when the red region of dial plate rotates to V-arrangement window, the arc shell fragment stirs a ratchet that is closest to on the ratchet and stirs the pivot axis, and the drive stirs the pivot rotation, makes the pointer rotatory scale on the count dial plate.

Its beneficial effect lies in, because the rising of short time probably appears in the temperature of contact part, then cooling to normal condition, if such condition appears, if the maintainer judges according to current temperature condition, there is the temperature problem that exceeds standard before can not discovering isolator, consequently through designing foretell structure, if the temperature exceeds standard, the pointer will move corresponding scale on the count dial, whether the maintainer of being convenient for judges the contact temperature the condition that the excess temperature exceeds standard appears in a period of time before, the maintainer of being convenient for discovers in advance and solves the problem.

The invention has the following beneficial effects:

(1) the cambered surface of the movable contact knife and the plane of the static contact form line contact, so that the contact area of the contact is small and easy to accumulate dirt caused by a plane contact area is avoided, and the penetration capability of the surface oxide layer is enhanced. (2) The power assisting mechanism is connected to the outgoing line contact box and the movable contact knife, the movable contact knife rotates around a shaft on the outgoing line contact box, when the operating rod drives the movable contact knife to pass through a balance vector point of the power assisting mechanism, the power assisting mechanism accelerates to push the movable contact knife to act under the action of releasing and storing force of the spring, the switching-on can be realized under the action of smaller pushing force, and the situation that the switching-on is not in place during high-altitude operation is avoided. (3) When the movable contact knife is inserted into the fixed contact to a certain depth, the front end of the movable contact knife pushes the push block of the switching-on indicating device to rotate, and when the indicating disc faces the movable contact knife or an operator, the movable contact knife is switched on in place and is fully contacted with the fixed contact, so that the situations of virtual switching-on, false switching-on, non-switching-on and the like are avoided. (4) The U-shaped groove edges of the wire inlet contact box and the wire outlet contact box are provided with the diversion trenches, so that rainwater flows out of the contact box along the diversion trenches, and the conductive part is prevented from being corroded due to contact with the rainwater; the flange at the upper end of the contact box is matched with the sealing rubber strip on the cover plate to form a closed space for effectively preventing rainwater from entering the interior of the contact box. (5) The temperature measuring device is arranged at the contact of the isolating switch and can monitor the temperature at the contact in real time, so that the working condition of the contact can be conveniently judged, and whether the contact of the movable contact and the fixed contact is reliable or not can be further judged. (6) Under the effect of apron and movable contact sword, with the interior confined space that forms of inlet wire contact box and the contact box of being qualified for the next round of competitions, can play waterproof dustproof and seal the effect that electrified component was kept apart in the atmosphere, promote anticorrosive and keep apart the effect.

Drawings

Fig. 1 is a schematic perspective view of a disconnector according to this embodiment.

Fig. 2 is a schematic cross-sectional view of a closing indication device in this embodiment.

Fig. 3 is a schematic sectional view of the assist mechanism according to the present embodiment.

Fig. 4 is a schematic cross-sectional view of another view of the closing indication device in this embodiment.

Fig. 5 is a schematic structural diagram of a stationary contact in this embodiment.

Figure 6 is a perspective view of a line contact box according to this embodiment.

Figure 7 is a schematic view of the design of the bottom seal slot of the contact box in this embodiment.

Fig. 8 is a schematic front view of the moving knife in this embodiment.

Fig. 9 is a schematic view of the vector position of the assist mechanism in the present embodiment.

Fig. 10 is a schematic view illustrating the installation of the over-temperature counting mechanism according to the present embodiment.

Fig. 11 is a partial enlarged view of a portion a in fig. 10 according to the present embodiment.

Fig. 12 is a schematic sectional view of the dial plate in the present embodiment.

Reference numerals

The device comprises a base 1, an insulator 2, an outgoing line contact box 3, an incoming line contact box 4, a wiring terminal 5, a movable contact knife 6, a bump 7, an expansion link 8, a spring 9, a temperature measuring device 10, a push block 11, a rotating shaft 12, an indicating disc 13, a torsion spring 14, a static contact 15, an elastic sheet 16, a cover plate 17, a flange 18, a diversion trench 19, a sealing groove 20, a dial plate shell 21, a dial plate 22, an upright column 23, an arc elastic sheet 24, a ratchet wheel 25, a shifting rotating shaft 26, a one-way bearing 27, a flat key 28, a pointer 29, a counting disc 30, a metal insert 31 and a reserved threaded hole 32.

Detailed Description

The following is further detailed by way of specific embodiments:

as shown in fig. 1 to 4, an outdoor high-voltage closed isolating switch comprises a movable contact knife 6, a boosting mechanism, an outgoing line contact box 3, an incoming line contact box 4, a wiring terminal 5, insulators 2, a base 1, a fixed contact 15, a temperature measuring device 10 and a switching-on indicating device, wherein the incoming line contact box 4 and the outgoing line contact box 3 are both hollow cubes without end plates, round corners are arranged on the outer sides and the bottom surface of the hollow cubes, a mounting block is arranged on one side surface of the outgoing line contact box 3, a connecting block is arranged at one end of the movable contact knife 6 and hinged on the mounting block, a limiting bulge is arranged on the connecting block to avoid overlarge rotation angle of the movable contact knife 6, one ends of 2 insulators are symmetrically arranged on two ends of the upper surface of the base 1, the lower ends of the incoming line contact box 4 and the outgoing line contact box 3 are respectively fixed at the upper ends of the insulators, the fixed contact 15 is arranged inside the incoming line contact box 4 and the outgoing line contact box 3, the incoming line contact box 4 and the outgoing line contact box 3 are respectively provided with a wiring terminal 5 on one side face, the wiring terminal 5 respectively extends to the inside of the incoming line contact box 4 and the inside of the outgoing line contact box 3 to be in close contact with a static contact 15, the movable contact knife 6 is hinged to the outer side of the outgoing line contact box 3, the movable contact knife 6 is in close contact with the static contact 15 in the incoming line contact box 4 and the outgoing line contact box 3 when in a closed state, cover plates 17 are respectively arranged at two ends of the movable contact knife 6, when the movable contact knife 6 is in the closed state, the cover plates 17 respectively cover the upper surfaces of the incoming line contact box 4 and the outgoing line contact box 3, and the cover plates 17, the movable contact knife 6 and the contact boxes jointly form a closed space for closing the static contact, so that a better sealing effect is achieved.

The operating rod pushes the pull ring on the movable contact knife 6 to rotate around the support on the incoming line contact box 4 and drive the power assisting mechanism to act, the movable contact knife 6 is cylindrical, an insulating shell is arranged at the part, located between the incoming line contact box 4 and the outgoing line contact box 3, of the movable contact knife 6 in a closed state, the circular part of the front end and the rear end is extruded into the U-shaped groove of the static contact 15, the elastic piece 16 outside the static contact 15 is stressed to form a reverse force to press the contact, and therefore the movable contact 15 and the static contact 15 are tightly attached; when the movable contact knife is inserted into the static contact 15 to a certain depth, the front end of the movable contact knife 6 contacts with a push block 11 of a closing indicating device, the push block 11 drives an indicating disc 13 to rotate through a rotating shaft 12, when the indicating disc 13 rotates 90 degrees and faces the movable contact knife 6 or an operator, closing is completed, the movable contact knife 6 is reliably contacted with the static contact 15, in the specific embodiment, a mark is arranged on the indicating disc 13, the mark is a 'closing' character etched on the indicating disc 13, the surface of the character is coated with pigment with a more obvious color, and the indicating disc 13 is reset by a torsion spring 14 when the movable contact knife 6 is separated.

As shown in fig. 9, since the disconnecting switch is installed on the line tower and is higher from the ground, the moving contact knife 6 can be pushed into the stationary contact 15 only by a large force under the influence of the height, the surrounding environment and the overlong deflection of the operating rod during operation, and the situations that the closing of the contacts is not in place or the closing of the contacts is deviated often occur in the process. In the embodiment, the power assisting mechanism comprises a support, a telescopic rod 8 and a spring 9, the spring 9 is positioned inside the telescopic rod 8, in the embodiment, the support is a convex block 7, one end of the support is hinged with a boss arranged on the outer side of the outgoing contact box 3, the other end of the support is hinged with one end of the telescopic rod 8, the other end of the telescopic rod 8 is hinged with a cover plate arranged above the outgoing contact box 3, in the embodiment, the telescopic rod 8 can be hinged with the upper surface or the side surface of the cover plate, so that the use requirement can be met, because the spring 9 in the telescopic rod 8 is compressed and stored energy when the movable contact knife 6 is opened through a multi-point hinge mode, and the movable contact knife 6 can be kept at a certain angle, the principle is that the movable contact knife 6 rotates to drive the telescopic rod 8 to fold, so that the telescopic rod 8 is compressed towards the vertical direction, and when the thrust of the spring 9 acts on the movable contact knife 6, the spring and the movable contact knife 6 reach a force balance state, when the operating rod drives the movable contact knife 6 to rotate to pass through the vector point, the energy of the spring 9 compressed in the telescopic rod 8 is released, and at the moment, an operator only needs a small pushing force to push the movable contact knife 6 into the static contact 15, so that the operation difficulty of the operator during closing can be reduced, the operator can realize quick closing only with a small force, and the closing effect is further ensured.

As shown in fig. 5, 6 and 7, a metal insert 31, which may be an aluminum alloy in this embodiment, is embedded in the middle of the incoming line contact box 4 and the outgoing line contact box 3, and the metal insert 31 is connected with the connecting terminal 5, the static contact 15 and the insulator 2 by bolts, so that on one hand, under the condition of high temperature, the connection between the contact boxes is not loosened due to the softening of the materials of the contact boxes, and the good electrical contact between the static contact 15 and the connecting terminal 5 is ensured; on the other hand, a threaded hole 32 is reserved on the side surface of the alloy material, a temperature measuring probe is arranged at the front end of the temperature measuring device 10, in the embodiment, the temperature measuring device 10 can be arranged on the incoming line contact box 4 or the outgoing line contact box 3, or the incoming line contact box 4 and the outgoing line contact box 3 are both provided with the temperature measuring device 10, a screw part outside the probe can be screwed into the reserved threaded hole, when the probe senses the temperature generated by the contact, the dial plate is driven to rotate, in the embodiment, the temperature measuring device 10 is arranged at the contact of the isolating switch, the temperature measuring device 10 comprises a dial head and a probe, the dial head comprises a dial plate shell 21 and a dial plate 22, the dial plate shell 21 is provided with a V-shaped transparent window, the dial plate 22 is divided into different color areas according to different temperatures, the temperature is green at 0-60 ℃, yellow at 61-90 ℃ and red at 91-120 ℃, when the temperature changes, the dial 22 rotates, the color displayed by the temperature at the moment can be observed in real time through the V-shaped window, the green is normal temperature, the yellow is temperature early warning, and the red is temperature exceeding, so that whether the switch is overheated currently or previously is adjusted, and hidden dangers are timely eliminated.

The movable contact sword 6 is cylindrical, utilizes the cambered surface of pipe and the 15 planes of static contact to form line contact, has both avoided the plane contact zone to lead to area of contact little and easy long-pending dirty, has strengthened the penetrability to surface oxide layer again, and the cambered surface of pipe avoids secondary operation, practices thrift cost and energy, and economic nature is good. The side surfaces of the incoming line contact box 4 and the outgoing line contact box 3 are provided with U-shaped grooves, when the movable contact knife 6 is in a closed state, the movable contact knife 6 is located in the U-shaped grooves, and the movable contact knife has the advantages that the movable contact knife 6 can enter the incoming line contact box 4 and the outgoing line contact box 3 through the U-shaped grooves, and the contact effect of the movable contact knife 6 and the fixed contact 15 is guaranteed. The upper surface inner sides of the incoming wire contact box 4 and the outgoing wire contact box 3 are provided with upwards protruding flanges 18, the outer side of the U-shaped groove is provided with a flow guide groove 19, and the U-shaped groove has the advantages that the flow guide groove 19 allows the incoming wire contact box to flow out along the flow guide groove 19, corrosion caused by contact of a conductive part and rainwater is avoided, the flanges 18 at the upper end of the contact box are matched with sealing rubber strips on the cover plate to enable the contact box to form a closed space, rainwater is effectively prevented from entering the contact box, in the embodiment, the bottom of the contact box is provided with an annular groove sealing groove 20, a sealing ring is sleeved in the contact box during assembly, rainwater is prevented from entering the contact box, charge ions on the mounting bolt can be prevented from overflowing from an assembly surface, and the multi-aspect effect is achieved. The part of the movable contact knife 6, which is positioned outside the U-shaped groove, is provided with an insulating shell, and the end part of the insulating shell, which is positioned outside the notch of the U-shaped groove, is provided with a convex ring, which can be arranged inside the U-shaped groove or in the middle of the U-shaped groove. The contact part of the convex ring and the U-shaped groove has certain extrusion deformation, the deformation degree of the convex ring just compensates the installation clearance between the movable contact knife 6 and the U-shaped groove, and the waterproof and dustproof effects are achieved. Of course, the arrangement of the baffle plate or other deformed structures on the insulating shell position falls into the protection range of the technical scheme as long as the U-shaped grooves on the incoming line contact box 4 and the outgoing line contact box 3 are sealed. Because only the upper end face and the end provided with the U-shaped groove of the incoming line contact box 4 and the outgoing line contact box 3 are not sealed, the situation of water inflow can not occur due to the installation relation of the lower end face, the incoming line contact box and the outgoing line contact box 3 can be extruded and sealed after installation is completed, and the other side faces are in a sealed state, so that the upper end face and the face provided with the U-shaped groove are respectively sealed only by the cover plate 17 and the movable contact knife 6, and the incoming line contact box 4 and the outgoing line contact box 3 are sealed.

In this embodiment, base 1 is integration section bar alloy base, base 1's concrete structure is the trapezoidal of logical groove has been seted up at the bottom surface middle part, and set up the logical groove in both sides and middle part in trapezoidal sectional direction, concrete structure is as shown in the figure, such benefit lies in, optimize the support intensity of bolt stress surface, it adopts the steel sheet to bend into pi shape structure to have avoided traditional base, the condition that the support surface is out of shape to both sides displacement when receiving the bolt packing force, guarantee that the movable contact sword 6 of insulator 2 upper end installation keeps the same epaxial linear contact with static contact 15 throughout, improve the reliability of electrical contact.

As shown in fig. 10, 11 and 12, a column 23 is disposed in a green region of the dial 22, an arc-shaped elastic piece 24 is disposed at an upper end of the column 23, a concave direction of the arc faces a rotation direction of the dial 22 when the temperature rises, a toggle rotating shaft 26 is disposed on the dial shell 21, the toggle rotating shaft 26 is connected with the dial shell 21 through a one-way bearing 27, the toggle rotating shaft 26 is connected with the one-way bearing 27 through a key, in this embodiment, a flat key 28 is selected for connection, a plurality of key slots are disposed on an inner ring of the one-way bearing 27, and a limit bump is disposed on the inner ring of the one-way bearing 27 and on a lower portion of the toggle rotating shaft 26, so as to prevent the toggle rotating shaft 26 from dropping onto the dial, but the toggle rotating shaft 26 can be lifted up to an outer direction of the dial shell 21, a ratchet 25 is disposed at an end of the toggle rotating shaft 26 inside the dial shell 21, a pointer 29 is disposed at an end of the toggle rotating shaft 26 outside the dial shell 21, and the surface of the dial plate shell 21 at the lower part of the pointer 29 is provided with a counting disc 30, when the red area of the dial plate 22 rotates to a V-shaped window, the arc-shaped elastic sheet 24 stirs a ratchet tooth on the ratchet wheel 25 closest to the axis of the stirring rotating shaft 26 to drive the stirring rotating shaft 26 to rotate, so that the pointer 29 rotates a scale on the counting dial plate 30. In this structure, during dial plate 22 resets, because the setting of arc shell fragment 24 and one-way bearing 27's setting, make arc shell fragment 24 can not drive stir pivot 26 rotatoryly, the number of times that appears overtemperature will be recorded by pointer 29 and count dial plate 30 promptly, when maintainer need reset pointer 29, only need will stir pivot 26 and mention upwards, then rotate to the initial position of pointer 29, then put down and stir pivot 26, the messenger stir epaxial parallel key 28 of pivot 26 and the interior keyway joint of circling of one-way bearing 27 can.

Because the temperature of the contact part may rise for a short time and then is cooled to a normal state, if the temperature is higher than the normal temperature, the problem that the temperature exceeds the standard before the disconnecting switch cannot be found again when the temperature is judged by a maintainer according to the current temperature condition, therefore, by designing the structure, if the temperature exceeds the standard, the pointer 29 moves corresponding scales on the counting dial plate 30, the maintainer can conveniently judge whether the temperature of the contact part exceeds the standard in a previous period of time, and the maintainer can conveniently find and solve the problem in advance. Preferably, an insulating cover or an insulating cap can be further arranged on the wiring terminal, so that the wiring terminal is prevented from being exposed to the outside and protected, and the whole isolating switch is in a fully-closed state.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A temperature measuring outdoor high-voltage closed isolating switch with switching-on indication and power assistance is characterized by comprising a base, insulators, an incoming line contact box, an outgoing line contact box and movable contact knives, wherein 2 insulators are vertically and symmetrically arranged on the upper surface of the base, the lower ends of the incoming line contact box and the outgoing line contact box are respectively fixed at the upper ends of the insulators, the inner parts of the incoming line contact box and the outgoing line contact box are provided with fixed contacts, the movable contact knives are hinged to the outer side of the outgoing line contact box, the movable contact knives are in close contact with the fixed contacts in the incoming line contact box and the outgoing line contact box when in a closed state, one side surfaces of the incoming line contact box and the outgoing line contact box are respectively provided with a connecting terminal, the connecting terminals respectively extend to the inner parts of the incoming line contact box and the outgoing line contact box to be in close contact with the fixed contacts, and the outer sides of the incoming line contact box or the outgoing line contact box are provided with temperature measuring devices, the probe of the temperature measuring device extends to the inside of the contact box, a closing indicating device is arranged on the incoming line contact box and comprises a push block, a rotating shaft and an indicating disc, one end of the rotating shaft is positioned inside the incoming line contact box, the other end of the rotating shaft is positioned outside the incoming line contact box, the push block and the rotating shaft are fixedly connected with one end of the incoming line contact box, the indicating disc is fixedly connected with the other end of the rotating shaft, the movable contact knife drives the push block to rotate when closing operation is carried out, cover plates are arranged on two ends of the movable contact knife, sealing rubber strips are arranged on the inner sides of the cover plates, when the movable contact knife is in a closed state, the cover plates respectively seal the upper parts of the incoming line contact box and the outgoing line contact box, U-shaped grooves for containing the movable contact knife are arranged on the opposite side surfaces of the incoming line contact box and the outgoing line contact box, and the cover plates and the movable contact knife jointly form a structure of sealed U-shaped grooves, an insulating shell is arranged on the outer side of the movable contact knife, and at least the part of the movable contact knife, which is positioned outside the U-shaped groove in the closed state, is coated by the shell.

2. The outdoor high-voltage closed isolating switch with the functions of temperature measurement, switch-on indication and power assistance according to claim 1, wherein the base is manufactured in an integrated manner.

3. The outdoor high-voltage closed isolating switch with the functions of temperature measurement, switching-on indication and power assistance according to claim 1, wherein the movable contact knife is cylindrical, the fixed contact is U-shaped, and an elastic sheet for tightly contacting the movable contact knife and the fixed contact is arranged on the outer side of the fixed contact.

4. The outdoor high-voltage closed isolating switch with the temperature measuring function, the switching-on indication function and the power assisting function according to claim 1, wherein a mounting block is arranged on the outgoing contact box, a connecting block is arranged at one end of the movable contact knife, and the connecting block is hinged to the mounting block.

5. The outdoor high-voltage closed isolating switch with the temperature measuring function and the switching-on indication and power assisting function according to claim 1 or 4, characterized in that power assisting mechanisms are symmetrically arranged on two sides of a cover plate of the outgoing contact box and comprise a support, a telescopic rod and a spring, the spring is located inside the telescopic rod, one end of the support is hinged to the outer side of the outgoing contact box, the other end of the support is hinged to one end of the telescopic rod, and the other end of the telescopic rod is hinged to the cover plate.

6. The temperature measuring outdoor high-voltage closed isolating switch with the switching-on indication and the power assisting function according to claim 1, wherein metal inserts are arranged inside the incoming line contact box and the outgoing line contact box, and the metal inserts are connected with the wiring terminal, the static contact and the insulator through bolts.

7. The temperature-measuring outdoor high-voltage closed isolating switch with switching-on indication and power assistance according to claim 6, wherein the inner sides of the upper surfaces of the incoming line contact box and the outgoing line contact box are provided with flanges protruding upwards, and the outer side of the U-shaped groove is provided with a flow guide groove.

8. The outdoor high-voltage closed isolating switch with the functions of temperature measurement, switch-on indication and power assistance according to claim 1, wherein a baffle or a convex ring for shielding and/or closing the U-shaped groove is arranged on the insulating shell.

9. The outdoor high-voltage closed isolating switch with the temperature measuring function, the switching-on indication and the power assisting function according to claim 1 is characterized in that the temperature measuring device further comprises a meter head, the meter head comprises a meter disc shell and a meter disc, a V-shaped transparent window is arranged on the meter disc shell, the meter disc is divided into different color areas according to different temperatures, the color areas are green at 0-60 ℃, yellow at 61-90 ℃ and red at 91-120 ℃, when the temperature changes, the meter disc rotates, the color displayed by the temperature at the moment can be observed in real time through the V-shaped window, the green is normal temperature, the yellow is temperature early warning, and the red is temperature exceeding.

10. The outdoor high-voltage closed isolating switch with the temperature measuring function and the switching-on indication and the power assisting function according to claim 9, wherein a stand column is arranged in a green area of the dial plate, an arc-shaped elastic sheet is arranged at the upper end of the stand column, a shifting rotating shaft is arranged on the dial plate shell, the shifting rotating shaft is connected with the dial plate shell through a one-way bearing, the shifting rotating shaft is connected with the one-way bearing through a key, a plurality of key grooves are arranged on an inner ring of the one-way bearing, a ratchet wheel is arranged at one end of the shifting rotating shaft, which is positioned inside the dial plate shell, a pointer is arranged at one end of the shifting rotating shaft, which is positioned outside the dial plate shell, a counting disc is arranged on the surface of the dial plate shell, which is arranged at the lower part of the pointer, when the red area of the dial plate rotates to a V-shaped window, the arc-shaped elastic sheet shifts one ratchet wheel, which is closest to the axis of the shifting rotating shaft, to drive the shifting rotating shaft to rotate, the pointer is rotated one scale on the counting dial.