CN113871245B - Outdoor high-voltage closed isolating switch with closing indication and power assisting functions for temperature measurement - Google Patents
Outdoor high-voltage closed isolating switch with closing indication and power assisting functions for temperature measurement Download PDFInfo
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- CN113871245B CN113871245B CN202111235005.9A CN202111235005A CN113871245B CN 113871245 B CN113871245 B CN 113871245B CN 202111235005 A CN202111235005 A CN 202111235005A CN 113871245 B CN113871245 B CN 113871245B
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Abstract
The invention relates to the technical field of power systems, in particular to an outdoor high-voltage closed isolating switch with a temperature measuring function and closing indication and assistance. The wire feeding device comprises a base, an insulator, a wire feeding contact box, a wire discharging contact box and a movable contact knife, wherein 2 one ends of the insulator are symmetrically arranged at two ends of the upper surface of the base, the lower ends of the wire feeding contact box and the wire discharging contact box are respectively fixed at the upper ends of the insulator, the movable contact knife is hinged to the outer side of the wire discharging contact box, the movable contact knife is in close contact with fixed contacts arranged in the wire feeding contact box and the wire discharging contact box, and wiring terminals are arranged on one side surfaces of the wire feeding contact box and the wire discharging contact box. The isolating switch is used for solving the problems that the isolating switch in the prior art is easy to be in virtual and false combination when being switched on, so that the contact part heats, the isolating switch in the prior art is difficult to measure the temperature of the contact part, and the maintenance difficulty of operation and maintenance personnel is increased.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to an outdoor high-voltage closed isolating switch with a temperature measuring function and closing indication and assistance.
Background
The outdoor high-voltage isolating switch is widely applied to distribution lines and plays a role in isolating or branching. The power safety isolating switch comprises an isolating switch main body, a rotating mechanism, a handle, a driving mechanism, a connecting mechanism and an isolating switch control mechanism, wherein the isolating switch main body is provided with a connecting 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 screw thread of the driving mechanism is connected with the rotating mechanism, and the rotating mechanism is used for driving the driving mechanism to rotate; the side wall of the rotating mechanism is provided with the handle, the handle is used for being held by people to operate, and the isolating switch disclosed in the patent can realize the control of on-off of the isolating switch, is simple and convenient to operate, and can improve the safety of use, but is difficult to enable maintenance personnel to know whether the temperature in the isolating switch and the closing are in place.
In addition, although a switch product with a full insulating material protection surface of a charged component appears in the market, the actual contact area of a contact is small, virtual closing, false closing and the like are easy to occur in the operation on a rod, an operator cannot distinguish whether closing is in place or not clearly by naked eyes at a distance of 3-5 meters from equipment under the rod, when a problem occurs, heating of a contact part is necessarily caused to raise the temperature, the contact is closed in an insulating sheath, and the temperature of the contact cannot be observed and measured by an infrared gun, so that the workload and 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 closing indication and assistance, which is used for solving the problems that the isolating switch in the prior art is easy to be in virtual closing and false closing during closing, so that a contact part heats, and the isolating switch in the prior art is difficult to measure the temperature of the contact part, so that the maintenance difficulty of operation and maintenance personnel is increased.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides an outdoor high-voltage closed isolating switch with closing indication and helping hand, includes base, insulator, inlet wire contact box, play line contact box and movable contact sword, 2 the vertical symmetry of insulator sets up in the upper surface of base, inlet wire contact box and the lower extreme of going out line contact box are fixed in the upper end of insulator respectively, the inside of inlet wire contact box and going out line contact box is equipped with the static contact, movable contact sword articulates in the outside of going out line contact box, movable contact sword is in the closed condition time with the static contact in inlet wire contact box and the line contact box in close contact simultaneously, all be equipped with binding post on the side of inlet wire contact box and the line contact box, binding post extends to the inside and the static contact in close contact of inlet wire contact box and line contact box respectively, the outside of inlet wire contact box and/or line contact box is equipped with temperature measuring device, 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 closing indicating device comprises a push block, a rotating shaft and an indicating disc, one end of the rotating shaft is positioned in 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 blade drives the push block to rotate during closing operation, both ends of the movable contact blade are provided with cover plates, sealing rubber strips are arranged on the inner sides of the cover plates, when the movable contact blade 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, the cover plates and the movable contact blade jointly form a structure of a closed U-shaped groove, the outer side of the movable contact blade is provided with an insulating shell, the shell at least covers the part of the movable contact knife which is positioned outside the U-shaped groove when the movable contact knife is in a closed state. The working principles of the temperature measuring device and the closing indicating device in the technical scheme are as follows:
And when the indicating disc faces the outgoing line contact box, the movable contact knife is closed in place and fully contacted with the fixed contact, so that the situations of virtual closing, false closing, incomplete closing and the like are avoided.
And when the probe senses the temperature generated by the contact, a dial in the gauge head rotates, and the temperature change in the gauge head can be observed.
Further limited, the base is manufactured by integral molding, which is beneficial in that deformation of the base can be effectively reduced.
The movable contact knife is further limited to be cylindrical, the fixed contact is U-shaped, and the outer side of the fixed contact is provided with an elastic sheet which enables the movable contact knife to be in close contact with the fixed contact, and 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, so that the problem that the conventional isolating switch adopts plane contact to cause small contact area and easy pollution accumulation is avoided, the penetrating capacity of an oxidation layer on the surface is enhanced, secondary processing is avoided on the arc surface of the circular tube, the cost and energy are saved, and the economical efficiency is good; the round parts at the front and rear ends of the movable contact blade are extruded into the U-shaped grooves of the fixed contact, and the elastic sheet outside the fixed contact is stressed to form a reverse force to press the contact, so that the movable contact and the fixed contact are ensured to be in close contact.
Further limited, the outlet contact box is provided with a mounting block, one end of the movable contact knife is provided with a connecting block, and the connecting block is hinged to the mounting block.
Further limited, the apron bilateral symmetry of contact box is equipped with power assisting mechanism, power assisting mechanism includes support, telescopic link and spring, the spring is located the inside of telescopic link, the one end of support articulates in the outside of contact box is qualified for the next round of competitions, the other end of support and the one end of telescopic link are articulated, the other end and the apron of telescopic link are articulated, and its beneficial lies in, the spring compression energy storage in the telescopic link when moving touch sword is opened, and when the action bars drive moving touch sword rotation pass the vector point, the spring energy of compression in the telescopic link obtains releasing, and operating personnel only need a less thrust just can fully push the moving touch sword in the stationary contact this moment, can reduce the operation degree of difficulty when the staff closes a floodgate, still guarantees the closing effect simultaneously.
Further limiting, the inside of inlet wire contact box and outlet wire contact box is equipped with metal inserts, metal inserts and binding post, stationary contact and insulator pass through bolted connection together, and its beneficial lies in, when effectively fixed contact box, can also guarantee under the high temperature condition, can not produce stress looseness because of the connection between binding post and the stationary contact that inlet wire contact box material softens with the inlet wire contact box, fully guarantees that stationary contact and binding post have good electrical contact performance.
Further limiting, the upper surface inboard of inlet wire contact box and outlet wire contact box is equipped with the flange that upwards protrudes, the outside in U type groove is equipped with the guiding gutter, and its beneficial lies in that the guiding gutter lets the rainwater flow out the contact box along the guiding gutter, avoids electrically conductive position and rainwater contact to produce the corruption, and the flange and the apron upper end of contact box cooperate to make the contact box form the enclosure space and effectively prevent the rainwater to get into inside the contact box.
Further limited, a baffle or a convex ring for shielding and/or closing the U-shaped groove is arranged on the movable contact knife insulating shell, and the movable contact knife insulating shell has the advantages that the baffle or the convex ring can further improve the sealing effect of the movable contact knife on the notch of the U-shaped groove.
The meter head further comprises a dial shell and a dial, wherein the dial shell is provided with V-shaped transparent windows, the dial is divided into different color areas according to different temperatures, the dial is green at 0-60 ℃, yellow at 61-90 ℃ and red at 91-120 ℃, when the temperature changes, the dial rotates, the color displayed at the moment can be observed in real time through the V-shaped windows, the green is normal temperature, the yellow is temperature early warning, and the red is temperature exceeding.
Further limiting, be equipped with the stand in the green district 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 between pivot and the one-way bearing, and be equipped with a plurality of keyways on the inner circle of one-way bearing, stir the one end that the pivot is located the dial plate shell inside and be equipped with the ratchet, stir the pivot and be equipped with the pointer on the one end that the dial plate shell is outside, and be equipped with the counter plate on the dial plate shell surface of pointer lower part, when the red region of dial plate rotated to V-arrangement window, the arc shell fragment stirred a ratchet that is closest to on the ratchet and stir the pivot axis, drives and stir the pivot rotation, makes the pointer rotatory scale on the counter plate.
The temperature of the contact part is likely to rise in a short time, and then the temperature is reduced to a normal state, if the temperature is reduced to the normal state, an maintainer can not find that the temperature exceeds the standard before the disconnecting switch according to the current temperature condition, so that by designing the structure, if the temperature exceeds the standard, the pointer can move corresponding scales on the counting dial plate, so that the maintainer can conveniently judge whether the temperature of the contact exceeds the standard in a period of time before, and the maintainer can conveniently find and solve the problem in advance.
The beneficial effects of the invention are as follows:
(1) The cambered surface of the movable contact blade and the plane of the fixed contact form line contact, so that the contact area of the contact is small and easy to accumulate dirt due to a plane contact area is avoided, and the penetrating capacity of an oxide layer on the surface 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 the shaft on the outgoing line contact box, when the operating rod drives the movable contact knife to pass through the balance vector point of the power assisting mechanism, under the action of the spring release storage force, the power assisting mechanism accelerates to push the movable contact knife to act, closing can be achieved under the action of small pushing force, and the situation that closing is not in place when the movable contact knife operates in high altitude 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 closing indicating device to rotate, and when the indicating disc faces the movable contact knife or an operator, the movable contact knife is closed in place and fully contacts with the fixed contact, so that the situations of virtual closing, false closing, incomplete closing and the like are avoided. (4) The U-shaped groove edges of the inlet and outlet contact boxes are provided with diversion trenches, so that rainwater flows out of the contact boxes along the diversion trenches, and corrosion caused by contact between the conductive parts and the rainwater is avoided; the flange at the upper end of the contact box is matched with the sealing rubber strip on the cover plate, so that the contact box forms a closed space, and rainwater is effectively prevented from entering the contact box. (5) The temperature measuring device is arranged at the contact of the isolating switch, and can monitor the temperature of the contact in real time, so that the working condition of the contact can be conveniently judged, and whether the contact of the moving contact and the static contact is reliable or not can be further judged. (6) Under the effect of apron and movable contact sword, form the enclosure space with in inlet wire contact box and the outlet wire contact box, can play waterproof dustproof and seal the electrified component and in the effect of atmosphere isolation, promote anticorrosive and isolation effect.
Drawings
Fig. 1 is a schematic perspective view of an isolating switch in this embodiment.
Fig. 2 is a schematic cross-sectional view of the closing indicating device in this embodiment.
Fig. 3 is a schematic cross-sectional view of the booster mechanism in this embodiment.
Fig. 4 is a schematic cross-sectional view of another view of the closing indicating device in this embodiment.
Fig. 5 is a schematic structural diagram of the static contact in this embodiment.
Fig. 6 is a schematic perspective view of a wire contact box in this embodiment.
Fig. 7 is a schematic design diagram of a bottom seal groove of the contact box in this embodiment.
Fig. 8 is a schematic front view of the movable contact blade in this embodiment.
Fig. 9 is a schematic diagram of the vector position of the assist mechanism in this embodiment.
Fig. 10 is a schematic view illustrating the installation of the over-temperature counter mechanism in the present embodiment.
Fig. 11 is a partial enlarged view of fig. 10a in this embodiment.
Fig. 12 is a schematic cross-sectional view of a dial in this embodiment.
Reference numerals of the drawings
Base 1, insulator 2, outlet contact box 3, inlet contact box 4, binding post 5, movable contact knife 6, lug 7, telescopic link 8, spring 9, temperature measuring device 10, push block 11, pivot 12, indicator panel 13, torsional spring 14, stationary contact 15, shell fragment 16, apron 17, flange 18, guiding groove 19, seal groove 20, dial plate housing 21, dial plate 22, stand 23, arc shell fragment 24, ratchet 25, toggle pivot 26, one-way bearing 27, flat key 28, pointer 29, counting disc 30, metal insert 31, reserved screw hole 32.
Detailed Description
The following is a further detailed description of the embodiments:
As shown in fig. 1 to 4, an outdoor high-voltage closed isolating switch is composed of a movable contact blade 6, a power assisting mechanism, an outgoing line contact box 3, an incoming line contact box 4, a wiring terminal 5, an insulator 2, a base 1, a fixed contact 15, a temperature measuring device 10 and a closing indicating device, wherein the incoming line contact box 4 and the outgoing line contact box 3 are hollow cubes without end plates, round corners are chamfered on the outer side and the bottom surface, 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 blade 6 and hinged to the mounting block, a limiting protrusion is arranged on the connecting block, the rotating angle of the movable contact blade 6 is prevented from being overlarge, one ends of 2 insulators are symmetrically arranged at 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 insulator, the inside of inlet wire contact box 4 and outlet wire contact box 3 is equipped with stationary contact 15, all be equipped with binding post 5 on the side of inlet wire contact box 4 and outlet wire contact box 3, binding post 5 extends to the inside and stationary contact 15 in inlet wire contact box 4 and outlet wire contact box 3 respectively, movable contact sword 6 articulates in the outside of outlet wire contact box 3, movable contact sword 6 is in the closed state with the stationary contact 15 in inlet wire contact box 4 and the outlet wire contact box 3 in the tight contact, all be equipped with apron 17 on the both ends of movable contact sword 6, when movable contact sword 6 is in the closed state, apron 17 covers the upper surface of inlet wire contact box 4 and outlet wire contact box 3 respectively, and apron 17, movable contact sword 6 and contact box constitute the enclosure space of closed stationary contact jointly, realize better sealed effect.
The operating rod pushes the pull ring on the movable contact blade 6 to rotate around the support on the incoming line contact box 4 and drives the power assisting mechanism to act, the movable contact blade 6 is cylindrical, an insulating shell is arranged at the part between the incoming line contact box 4 and the outgoing line contact box 3 when the movable contact blade 6 is in a closed state, the round parts at the front end and the rear end are extruded into the U-shaped groove of the fixed contact 15, and the elastic sheet 16 outside the fixed contact 15 is stressed to form a reverse force pressing contact, so that the close fitting of the fixed contact 15 and the fixed contact 15 is ensured; when the movable contact knife is inserted into the fixed contact 15 to a certain depth, the front end of the movable contact knife 6 is in contact with the push block 11 of the closing indicating device, the push block 11 drives the indicating disc 13 to rotate through the rotating shaft 12, when the indicating disc 13 rotates by 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 fixed contact 15, in the specific embodiment, an indicator is arranged on the indicating disc 13, the indicator is an 'on' word etched on the indicating disc 13, a pigment with a more obvious color is coated on the surface of the word, and the torsion spring 14 resets the indicating disc 13 when the movable contact knife 6 is separated.
As shown in fig. 9, because the isolating switch is installed on the tower of the circuit, the isolating switch is higher from the ground, and is influenced by the height, the surrounding environment and the overlong deflection of the operating rod during operation, a great force is required to push the movable contact blade 6 into the fixed contact 15, and the situation that the contact is not closed in place or the contact is closed often occurs in the process. In this embodiment, the booster mechanism includes the support, telescopic link 8 and spring 9, spring 9 is located the inside of telescopic link 8, in this embodiment, the support is lug 7, the one end of support is articulated with the boss that the outside of being qualified for the next round of competitions contact box 3 set up, the other end of support is articulated with the one end of telescopic link 8, the other end of telescopic link 8 is articulated with the apron that sets up in being qualified for the next round of competitions contact box 3 top, telescopic link 8 can be articulated with the upper surface of apron or side in this embodiment, the user demand can all be satisfied, because through the articulated mode of multiple points, spring 9 compression energy storage in the telescopic link 8 when moving contact 6 opens the brake, and moving contact 6 can keep at certain angle, the principle is moving contact 6 rotatory, drive telescopic link 8 folds, make telescopic link 8 compress to vertical direction, wait to act on the thrust of moving contact 6 with moving contact 6, form a force balance state with moving contact 6, when the action lever drives moving contact 6 and rotate the face point, the spring 9 energy of compressing in the telescopic link 8 obtains releasing, because the mode, the operating personnel need only reduces the thrust in the moving contact 6 can be pushed into the static contact 15 when the moving contact is just need of 15, the quick-closing effect is realized, the quick closing effect is still can be guaranteed to the realization.
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 parts of the incoming contact box 4 and the outgoing contact box 3, and the metal insert 31 is connected with the connection terminal 5, the fixed contact 15 and the insulator 2 through bolts, so that on one hand, under the condition of high temperature, the connection between the fixed contact 15 and the connection terminal 5 is ensured not to be loosened due to the softening of the contact box materials, and good electrical contact between the fixed contact and the connection terminal 5 is ensured; on the other hand, a threaded hole 32 is reserved on the side surface of an 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 temperature measuring device 10 is arranged on both the incoming line contact box 4 and the outgoing line contact box 3, 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 probe drives a dial 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 gauge outfit and the probe, the gauge outfit comprises a dial shell 21 and a dial 22, the dial shell 21 is provided with a V-shaped transparent window, the dial 22 divides different color areas according to different temperatures, the dial 22 is green at 0-60 ℃, the temperature is yellow at 61-90 ℃, the temperature is red at 91-120 ℃, when the temperature is changed, the dial 22 rotates, the color displayed at the moment can be observed in real time through the V-shaped window, the green is normal in temperature, the yellow is the temperature early warning, the red is the temperature standard, and the current or the condition of overheat condition exists or not is in time is time eliminated.
The movable contact knife 6 is cylindrical, and forms line contact with the plane of the fixed contact 15 by utilizing the cambered surface of the circular tube, so that the small contact area and easy dirt accumulation caused by a plane contact area are avoided, the penetrating capacity of the surface oxide layer is enhanced, the cambered surface of the circular tube is free from secondary processing, the cost and the energy are saved, and the economical efficiency is good. The U-shaped grooves are formed in the side faces of the incoming line contact box 4 and the outgoing line contact box 3, 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 U-shaped grooves are beneficial in that the movable contact knife 6 can enter the incoming line contact box 4 and the outgoing line contact box 3, and the contact effect of the movable contact knife 6 and the fixed contact 15 is guaranteed. The upper surface inboard of inlet wire contact box 4 and outlet wire contact box 3 is equipped with the protruding flange 18 that makes progress, the outside in U type groove is equipped with guiding gutter 19, and its beneficial lies in that guiding gutter 19 lets get into along guiding gutter 19 outflow contact box, avoids electrically conductive position and rainwater contact to produce the corruption, flange 18 and the apron on the upper end of contact box cooperate and make contact box form the enclosure space effectively prevent inside the rainwater entering contact box, in this embodiment, contact box bottom is provided with a annular seal groove 20, embolia the sealing washer during the assembly, prevent the rainwater to get into to can prevent the charge ion on the mounting bolt from spilling over from the fitting surface, play many-sided effect. The part that movable contact sword 6 is located the U type groove is provided with insulating housing, and is equipped with the bulge loop on the tip that insulating housing is located the U type groove notch outside, of course also can set up the inboard in U type groove, perhaps the middle part in U type groove, and insulating housing avoids movable contact sword 6 to expose outside on the one hand, and the bulge loop can be better seals the notch in U type groove simultaneously. The contact part of the convex ring and the U-shaped groove is provided with a certain extrusion deformation, the deformation degree of the convex ring just compensates the installation gap between the movable contact knife 6 and the U-shaped groove, and the waterproof and dustproof effects are achieved. Of course, the baffle or other deformed structures are arranged on the insulating shell, so long as the U-shaped grooves on the incoming line contact box 4 and the outgoing line contact box 3 are closed, the protection scope of the technical scheme is fallen. Because the incoming line contact box 4 and the outgoing line contact box 3 are only provided with the upper end face and the end provided with the U-shaped groove which are not closed, the lower end face is not provided with water due to the installation relationship, and the incoming line contact box 4 and the outgoing line contact box 3 can be extruded and sealed after the installation is completed, and the other side faces are all in a closed state, only the cover plate 17 and the movable contact knife 6 are required to respectively seal the upper end face and the surface provided with the U-shaped groove, and the closing of the incoming line contact box 4 and the outgoing line contact box 3 is realized.
In this embodiment, base 1 is integration section bar alloy base, and the trapezium of logical groove has been seted up for the bottom surface middle part to the specific structure of base 1, and has seted up the logical groove of both sides and middle part in the direction of trapezium section, and specific structure is as shown in the figure, and this advantage lies in, optimize the supporting strength of bolt atress face, avoided traditional base to adopt the steel sheet to bend into pi shape structure, the condition of displacement deformation to both sides when the supporting surface receives the bolt compressive force, the movable contact sword 6 of guaranteeing insulator 2 upper end installation keeps same axial center linear contact all the time with stationary contact 15, improves the reliability of electric contact.
As shown in fig. 10, 11 and 12, a stand column 23 is arranged in a green area of a dial 22, an arc-shaped elastic sheet 24 is arranged at the upper end of the stand column 23, a stirring rotating shaft 26 is arranged on the dial housing 21 in a concave direction of radian toward the rotating direction when the dial 22 is heated, the stirring rotating shaft 26 is connected with the dial housing 21 through a one-way bearing 27, the stirring rotating shaft 26 is connected with the one-way bearing 27 through a key, in the specific embodiment, a flat key 28 is selected for connection, a plurality of key grooves are arranged on the inner ring of the one-way bearing 27, a limit lug is arranged on the inner ring of the one-way bearing 27 and the lower part of the stirring rotating shaft 26, the aim is to prevent the stirring rotating shaft 26 from falling onto the dial, but the stirring rotating shaft 26 can be lifted towards the outer side of the dial housing 21, a ratchet wheel 25 is arranged at one end of the stirring rotating shaft 26 positioned inside the dial housing 21, a pointer 29 is arranged at one end of the outer part of the dial housing 21, a counting disc 30 is arranged on the surface of the dial housing 21, when the red area of the dial 22 rotates to a V-shaped window, a ratchet wheel closest to the axis of the arc-shaped elastic sheet 24 on the ratchet wheel 25 rotates, and the stirring rotating shaft 26 rotates to the one dial 30, so that the pointer 30 rotates on the scale. In this structure, when dial plate 22 resets, owing to the setting of arc shell fragment 24 and the setting of one-way bearing 27, make arc shell fragment 24 can not drive and stir pivot 26 rotation, the number of times that appears the overtemperature will be recorded by pointer 29 and count dial plate 30 promptly, when the maintainer need reset pointer 29, only need upwards lift up stirring pivot 26, then rotate to pointer 29's initial position, then put down stirring pivot 26, make stir on pivot 26 flat key 28 and the key way joint on the one-way bearing 27 inner race can.
Because the temperature of the contact part is likely to rise in a short time and then is cooled to a normal state, if such a situation appears, an maintainer can not judge according to the current temperature situation, and the problem of exceeding the temperature before the disconnecting switch is not found any more, therefore, by designing the structure, if the temperature exceeds the standard situation, the pointer 29 moves the corresponding scale on the counting dial 30, so that 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 to prevent the wiring terminal from being exposed, and the wiring terminal is protected, so that the whole isolating switch is in a fully-closed state.
It should be noted in advance that, in the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. The utility model provides an outdoor high-voltage closed isolating switch with closing indication and assistance, which is characterized in that the switch comprises a base, an insulator, a wire inlet contact box, a wire outlet contact box and a movable contact knife, 2 the insulators are vertically and symmetrically arranged on the upper surface of the base, the lower ends of the wire inlet contact box and the wire outlet contact box are respectively fixed on the upper ends of the insulators, fixed contacts are arranged in the wire inlet contact box and the wire outlet contact box, the movable contact knife is hinged on the outer side of the wire outlet contact box, the movable contact knife is simultaneously in close contact with the fixed contacts in the wire inlet contact box and the wire outlet contact box when in a closed state, wiring terminals are respectively arranged on one side surfaces of the wire inlet contact box and the wire outlet contact box, the wiring terminals are respectively extended to the inner parts of the wire inlet contact box and the wire outlet contact box to be in close contact with the fixed contacts, a temperature measuring device is arranged on the outer side of the wire inlet contact box or the wire outlet contact box, 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 closing indicating device comprises a push block, a rotating shaft and an indicating disc, one end of the rotating shaft is positioned in 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 blade drives the push block to rotate during closing operation, both ends of the movable contact blade are provided with cover plates, the inner sides of the cover plates are provided with sealing rubber strips, when the movable contact blade 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 accommodating the movable contact blade are formed in the opposite side surfaces of the incoming line contact box and the outgoing line contact box, the cover plate and the movable contact knife jointly form a structure for sealing the U-shaped groove, an insulating shell is arranged on the outer side of the movable contact knife, and the shell at least wraps the part, located outside the U-shaped groove, of the movable contact knife in a closed state.
2. The outdoor high-voltage closed isolating switch with closing indication and power assistance according to claim 1, wherein the base is manufactured by adopting integral molding.
3. The outdoor high-voltage closed isolating switch with closing indication and power assisting function according to claim 1, wherein the movable contact knife is cylindrical, the fixed contact is U-shaped, and an elastic sheet which enables the movable contact knife to be in close contact with the fixed contact is arranged on the outer side of the fixed contact.
4. The outdoor high-voltage closed isolating switch with closing indication and power assistance for temperature measurement according to claim 1, wherein the outgoing line contact box is provided with a mounting block, one end of the movable contact knife is provided with a connecting block, and the connecting block is hinged to the mounting block.
5. The outdoor high-voltage closed isolating switch with closing indication and assistance according to claim 1 or 4, wherein the assistance mechanisms are symmetrically arranged on two sides of the cover plate of the outgoing line contact box, the assistance mechanisms comprise a support, a telescopic rod and a spring, the spring is positioned in the telescopic rod, one end of the support is hinged to the outer side of the outgoing line 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 outdoor high-voltage closed isolating switch with closing indication and assistance for temperature measurement according to claim 1, wherein a metal insert is arranged in the incoming contact box and the outgoing contact box, and the metal insert is connected with a wiring terminal, a fixed contact and an insulator through bolts.
7. The outdoor high-voltage closed isolating switch with closing indication and power assisting function 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 sides of the U-shaped grooves are provided with diversion trenches.
8. The outdoor high-voltage closed isolating switch with closing 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 closing indication and assistance according to claim 1, wherein the temperature measuring device further comprises a gauge outfit, the gauge outfit comprises a dial plate shell and a dial plate, a V-shaped transparent window is arranged on the dial plate shell, the dial plate is divided into different color areas according to different temperatures, the temperature of 0-60 ℃ is green, the temperature of 61-90 ℃ is yellow, the temperature of 91-120 ℃ is red, when the temperature changes, the dial plate rotates, the color displayed 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 closing indication and 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 stirring rotating shaft is arranged on the dial plate shell and is connected with the dial plate shell through a one-way bearing, the stirring rotating shaft is connected with the one-way bearing through a key, a plurality of key grooves are formed in an inner ring of the one-way bearing, a ratchet wheel is arranged at one end of the stirring rotating shaft, which is positioned inside the dial plate shell, a pointer is arranged at one end of the stirring rotating shaft, which is positioned outside the dial plate shell, and a counting disc is arranged on the surface of the dial plate shell at the lower part of the pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235005.9A CN113871245B (en) | 2021-10-22 | 2021-10-22 | Outdoor high-voltage closed isolating switch with closing indication and power assisting functions for temperature measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235005.9A CN113871245B (en) | 2021-10-22 | 2021-10-22 | Outdoor high-voltage closed isolating switch with closing indication and power assisting functions for temperature measurement |
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| CN113871245A CN113871245A (en) | 2021-12-31 |
| CN113871245B true CN113871245B (en) | 2024-04-19 |
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| CN202111235005.9A Active CN113871245B (en) | 2021-10-22 | 2021-10-22 | Outdoor high-voltage closed isolating switch with closing indication and power assisting functions for temperature measurement |
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|---|---|
| CN113871245A (en) | 2021-12-31 |
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