CN101241820A - Single-pole modular low-voltage breaker - Google Patents
Single-pole modular low-voltage breaker Download PDFInfo
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- CN101241820A CN101241820A CNA2008100186630A CN200810018663A CN101241820A CN 101241820 A CN101241820 A CN 101241820A CN A2008100186630 A CNA2008100186630 A CN A2008100186630A CN 200810018663 A CN200810018663 A CN 200810018663A CN 101241820 A CN101241820 A CN 101241820A
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Abstract
A low voltage circuit breaker with a modularized monopole belongs to the low voltage apparatus technical field, comprising a casing, a plurality of standard monopole circuit breaking arc-extinguishing device, an operation mechanism, and a tripping device. The standard monopole circuit breaking arc-extinguishing device comprises a left molding casing, a right molding casing, a movable and static contact element and a arc-extinguishing chute matched with the movable and static contact element. The invention is characterized in that the standard monopole circuit breaking arc-extinguishing device also includes a backing pressure tripping mechanism which is arranged on the casing wall of one of the left or right molding casings. The advantages are as follows: a rapid breaking effect is embodied; the monopole modules are independent; interphase short circuit is avoided because two phases share a commom voltage tripping; the critical trippping current among electrodes are consistent; sealing and structural strength are high enough that the conductivity of the phases is reduced; the backing pressure tripping mechanism is designed into a part along with the standard monopole circuit breaking arc-extinguishing device to make up the whole monopole module so as to reduce the phase difference.
Description
Technical field
The invention belongs to the low voltage electrical apparatus technology field, be specifically related to a kind of single-pole modular low-voltage breaker, this class circuit breaker has double housing and is made up of open circuit arc-control device, operating mechanism, trip gear of the modular standard one pole of a plurality of one poles, each standard single-stage arc-control device that opens circuit has the backing pressure tripping mechanism, and the effect of backing pressure tripping mechanism is the pressure actuated operating mechanism of arcing gas that is produced when utilizing the dynamic and static contact of contact assembly to be separated from each other.
Background technology
Know the reason of knowing as industry, circuit breaker is one pole or multipole, multipole circuit breaker is three utmost points, four-pole circuit breaker for example, each utmost point under certain housing grade is similar, or even it is identical, as long as be combined into multipole circuit breaker through standardization, modular single-pole circuit breaker, so just can reduce manufacturing cost, assembly cost and raising efficiency of assembling significantly with one pole standardization, modularization and by this class.
Existing circuit-breaker comprises a utmost point (one pole) or multipole contact device, realize closing a floodgate or the operating mechanism of separating brake, activate the trip gear and the shell of operating mechanism action when overload and/or short trouble, and shell comprises that the pedestal and that is used to hold aforesaid contact apparatus, operating mechanism and trip gear has the lid on the pedestal of being configured in of panel.When circuit breaker was subjected to short-circuit current rush, the action of the magnetictrip of trip gear made the circuit breaker disjunction, reaches the purpose of short-circuit protection.But because electromagnetic tripping apparatus provides the dropout actuating force by multistage mechanism, so operate time is desired long in time quick with respect to short-circuit protection, is difficult to embody in time, short-circuit protection effect efficiently.In view of this; the arcing gas pressure that the dynamic and static contact blade that adopts custom to be referred to as dynamic and static contact component is produced when being separated from each other with electrodynamic repulsion force directly promotes pressure push-rod; activate the technical scheme of operating mechanism by pressure push-rod; compared with aforementioned circumstances have drive link few, can embody more timely, more quickly circuit-breaker is tripped, so the effect of short-circuit protection ideal comparatively.
Chinese patent Granted publication CN1041361C discloses a kind of moulding press shell low voltage breaker, its dropout principle as shown in Figure 1, the gases at high pressure that the standard one pole of this low-voltage circuit breaker opens circuit and produced when arc-control device 2 (patent has provided four utmost points) is phase partition air chamber 6 (patent claims separator) the collection sound contact component disjunction short circuit current that utilizes between the one pole, specifically be to make gases at high pressure enter dividing plate gas channels in series 5, promote the snap close that air pressure push rod 211 hits operating mechanism, make the operating mechanism release of circuit breaker, reach the purpose of quick disjunction.Above-mentioned gases at high pressure of mentioning and gas passage are: enter phase partition air chamber 6 from the arc extinguishing grid pieces chamber, and then enter dividing plate gas channels in series 5, until actuation gas pressure push rod 211.As seen, the intermediate link of the gas passage of gases at high pressure is more, complex structure, especially for the junction of intermediate link, can not reach the effect of ultimate attainment sealing owing to be subjected to the restriction of manufacturing process and assembly technology, therefore be communicated with outside atmosphere easily and cause atmospheric pressure lost, thereby the interrupting performance of circuit breaker is affected.In addition, with regard to structure, the shortcoming that has following three aspects: one, there is the phase partition air chamber 6 of the quantity of n-1 in n utmost point circuit breaker, therefore the shared pressure trip device of two-phase must be arranged, above-mentioned patent has exemplified the N utmost point, the A utmost point, the B utmost point, C utmost point four-pole circuit breaker, the N utmost point and the A utmost point show as a shared pressure trip device, and there is first passage T15 shown in Figure 1, in interrupting process, have phase fault hidden danger, because when cut-offfing, pressure valve is opened on both sides simultaneously makes two-phase can't be avoided by the situation that first passage T15 is communicated with; They are two years old, position with respect to air pressure push rod 211, the distance difference of four-way T13 and five-way road T14 is bigger, especially second, third passage T11, T12 and five-way road T14's is bigger apart from the length gap, thereby cause gas passage volume and vapour lock to exist than big-difference, under identical arc control device gases at high pressure situation, the thrust that is delivered to air pressure push rod 211 can occur than big-difference, therefore the critical tripping current between each utmost point can exist than big-difference, that is to say that the consistency of critical current can't guarantee; They are three years old, because the backing pressure tripping mechanism is arranged on the open circuit outside of arc-control device of one pole individually as the division element, and a plurality of standard one poles shared backing pressure tripping mechanism of arc-control device that opens circuit, so the degree of modularity is limited, is unfavorable for the quick assembling of circuit breaker.Therefore arc-control device organically combines and promptly constitutes the one pole modularization if backing pressure tripping mechanism and standard single-stage can be opened circuit, and can be eliminated just be short of at so above-mentioned three places.
Summary of the invention
Task of the present invention is to provide a kind of gas passage intermediate link few and prevented atmospheric pressure lost, can avoid the shared pressure trip device of two-phase and to use the critical tripping current unanimity eliminated between phase fault hidden danger, each utmost point and the degree of modularity high and help the single-pole modular low-voltage breaker of assembling fast.
Task of the present invention is finished like this, a kind of single-pole modular low-voltage breaker, it comprises by a pedestal and is configured in the shell that the lid on the pedestal constitutes, be contained in a plurality of standard one poles in pedestal arc-control device that opens circuit, one is placed in the trip gear that orders about described operating mechanism action when overload and/or the short trouble in the pedestal with open circuit the operating mechanism with unlock piece that arc-control device matches and one of described standard one pole, the described standard one pole arc-control device that opens circuit comprises a left side, right molded casing, be located at a left side, sound contact assembly in the right molded casing and being placed in of matching with the sound contact assembly by the right arc extinguishing grid pieces chamber of the left arc extinguishing grid pieces chamber of the molded casing in a left side and right molded casing the arc extinguishing grid pieces in the common arc extinguishing grid pieces chamber that forms, characteristics are: the described standard one pole arc-control device that opens circuit also includes one and is used to accept moving by described sound contact assembly, the direct effect of the arcing gas pressure that the mutual exclusion of fixed contact phase is produced when opening and use the backing pressure tripping mechanism of the unlock piece release that drives described operating mechanism, this backing pressure tripping mechanism movably is arranged on a described left side, appointing in the right molded casing selected on the shell wall of a molded casing.
In a specific embodiment of the present invention, described backing pressure tripping mechanism movably is arranged on outside the length direction and shell wall of one of them the molded casing in the described left and right molded casing, and an end of inclined to one side shell wall.
In another specific embodiment of the present invention, described backing pressure tripping mechanism movably is arranged in the shell wall of length direction of one of them the molded casing in the described left and right molded casing, and an end of shell wall partially.
Go back in the specific embodiment of the present invention, offer an operating air pressure chamber that is used to collect gases at high pressure on the molded casing in a described left side and above corresponding to left arc extinguishing grid pieces chamber, this operating air pressure chamber communicates with left arc extinguishing grid pieces chamber; Offer a containing cavity on the outer wall corresponding to the left molded casing in described operating air pressure chamber, described backing pressure tripping mechanism is arranged on the described containing cavity, is activated by the arcing gas in the operating air pressure chamber.
In another specific embodiment of the present invention, on the inwall of the molded casing in a described left side and partially an end of the length direction of inwall constitutes the operating air pressure chamber that is used to collect gases at high pressure, and this operating air pressure chamber communicates with left arc extinguishing grid pieces chamber; Be formed with a containing cavity above corresponding to the left molded casing in described operating air pressure chamber, described backing pressure tripping mechanism is arranged in the described containing cavity, is activated by the arcing gas in the operating air pressure chamber.
In another specific embodiment of the present invention, the top expansion of described containing cavity has been set as a push jack chamber, the narrow feet groove that shortened in bottom, described backing pressure tripping mechanism comprises an air pressure push rod, an one pressure elastic component and a push piece, the lower end of air pressure push rod constitutes feet and is plugged in the described feet groove, the upper end is stuck in containing cavity, push piece is configured in the portion on the upper side of air pressure push rod with any one configuration mode of direct or indirect configuration and corresponding to position, described push jack chamber, constitute an atmospheric pressure acting surface on the push piece, this atmospheric pressure acting surface is towards the gas outlet in described operating air pressure chamber, be used to accept come from the effect of the gases at high pressure in operating air pressure chamber, the pressure elastic component is arranged in the push jack chamber, one end bearing is on pressure push-rod, and axially corresponding with push piece, the other end is bearing on the chamber wall in push jack chamber.
More of the present invention and in specific embodiment, described backing pressure tripping mechanism 21 comprises an air pressure push rod, a pressure elastic component and a push piece, the lower end of pressure push-rod is stretched in the described operating air pressure chamber, the upper end is stuck in the operating air pressure chamber, push piece is installed in the bottom of pressure push-rod, and with operating air pressure chamber and containing cavity sealed separation, the pressure elastic component is nested with on pressure push-rod, the upper end is bearing on the left molded casing, and the lower end is bearing on the push piece.
In of the present invention and then specific embodiment, described backing pressure tripping mechanism comprises an atmospheric pressure pole, an one pressure elastic component and a push piece, the lower end of pressure push-rod be stretched in the described operating air pressure chamber and hub setting on the inwall of the molded casing in a left side, an and end of the length direction of inclined to one side inwall, the upper end of pressure push-rod is stuck in the operating air pressure chamber, push jack with heeling condition be arranged on the bottom of air pressure push rod and towards described arc extinguishing grid pieces chamber, the pressure elastic component is arranged on the outside of left molded casing, the one end bearing is on the outer steps of the molded casing in a left side, and the other end is bearing on the body of rod of upper end of pressure push-rod.
Of the present invention again more and in specific embodiment, also narrow the contracting in described operating air pressure chamber has an air intake duct, be embedded with one in the inside upper part of the molded casing in a described left side and at position and be used for the dividing plate that the accent with the operating air pressure chamber covers corresponding to described operating air pressure chamber, offer an air admission hole on the dividing plate, air admission hole communicates with left arc extinguishing grid pieces chamber, and corresponding with air intake duct and communicate.
In again of the present invention and then specific embodiment, the inwall of the molded casing in the described right side and constitute one on top and detect venting cavity corresponding to described right arc extinguishing grid pieces chamber, offer air channel on the inwall of detection venting cavity, air channel communicates with the gas passage that is arranged with on the inwall of the molded casing in the right side, gas passage communicates with right arc extinguishing grid pieces chamber, detect and to offer a pressed gas that is used for to detect usefulness on the outer wall of venting cavity and be incorporated into and detect the air pressure that venting cavity goes and detect the hole, be embedded with one in the described detection venting cavity and be used to keep off hold one's breath and press detect the air pressure valve block in hole, described air pressure valve block is the flexure strip that has from recoverability.
The present invention is owing to be disposed at the standard one pole with the backing pressure tripping mechanism and open circuit and form the one pole modularization on the arc-control device, make each standard one pole arc-control device that opens circuit have the environment of sealing separately, do not need to resemble and utilize alternate public space the prior art, thereby saved phase partition air chamber and tediously long dividing plate gas channels in series, both prevented atmospheric pressure lost and can embody more quick disjunction effect, simplify the structure again and help processing and the assembling; The one pole module is independent separately, and that has avoided existing in the prior art easily causes the hidden danger of phase fault because of the shared pressure trip device of two-phase; Can ensure the critical tripping current unanimity between each utmost point; Arc-control device is independent separately because each standard one pole opens circuit, alternate isolation fully, so sealing and structural strength height, and the possibility of alternate conducting is reduced to extremely low degree, and interrupting performance and structural stability all can ensure; The backing pressure tripping mechanism is designed to as following in standard one pole open circuit parts of arc-control device and integrant one pole module, thereby has reduced respectively to differ the opposite sex, help reducing manufacturing, assembly cost and use the embodiment economy.
Description of drawings
Fig. 1 is the schematic diagram of pressure actuated air pressure push rod 211 actions of the arcing gas in the prior art.
Fig. 2 is the structure chart of single-pole modular low-voltage breaker of the present invention.
Fig. 3 is open circuit an example structure figure of arc-control device 2 of the standard one pole of single-pole modular low-voltage breaker of the present invention.
Fig. 4 is the another kind of embodiment schematic diagram of backing pressure tripping mechanism 21.
Fig. 5 is also a kind of embodiment schematic diagram of backing pressure tripping mechanism 21.
Fig. 6 is the open circuit fundamental diagram of arc-control device 2 of each standard one pole of single-pole modular low-voltage breaker of the present invention.
Embodiment
Embodiment 1:
See also Fig. 2, provided shell 1, this shell 1 comprises pedestal 11 and lid 12, and pedestal 11 and lid 12 are obtained by molded, and lid 12 matches with the top of pedestal 11, and also is furnished with panel 121 usually covering on 12.As a kind of concrete execution mode, the seat chamber of the pedestal 11 that provides can be satisfied and is installed with open circuit arc-control device 2 and one of three mutually the same standard one poles of structure and transshipping and/or can drive the trip gear 4 that operating mechanism 3 moves during short trouble, arc-control device 2 assembly mutually of opening circuit of operating mechanism 3 and standard one pole, and act on its unlock piece 31 by the standard one pole arc-control device 2 that opens circuit, make operating mechanism 3 releases.If the seat chamber of pedestal 11 expanded to be able to the consistent each other standard one pole of ccontaining four structures arc-control device 2 that opens circuit, the single-pole modular low-voltage breaker that the present invention so advocated is essentially four utmost point modular low-voltage breakers, and vice versa.Matching relationship and set-up mode on pedestal 11 and prior art and identical between arc-control device 2, operating mechanism 3, the trip gear 4 because above mentioned each standard one pole opens circuit with the disclosed content of above mentioned CN1041361C, that is to say and belong to known technology, therefore the applicant no longer launches explanation to it, have only, the applicant has made improvement to the open circuit structure of arc-control device 2 of each standard one pole, specifically can obtain by the explanation to Fig. 3 understanding.
Embodiment 2:
See also Fig. 3, as described above, the structure of arc-control device 2 duplicates because each standard one pole opens circuit, and therefore, the applicant only is described in detail one of them in this enforcement.
The standard one pole arc-control device 2 that opens circuit comprises left and right molded casing 22,23 and is located at sound contact assembly 25 in the left and right molded casing 22,23 and that match with contact assembly 25 and be contained in by two groups of arc extinguishing grid pieces 26 in 221,231 arc extinguishing grid pieces chambeies that form jointly, the left and right arc extinguishing grid pieces chamber on the left and right molded casing 22,23.In the present embodiment, the sound contact assembly 25 that provides shows as the version of double-contact, and promptly sound contact assembly 25 has comprised moving contact 251 and a pair of fixed contact 252.According to the reason known to the industry, sound contact assembly 25 can also show as single-contact version, and promptly sound contact assembly 25 comprises a moving contact 251 and a fixed contact 252, and contrast can be by Fig. 4 or Fig. 5 confirmation.In the superincumbent technical field hurdle, the applicant has mentioned the notion of double housing, so-called double housing promptly: one is shell 1, and another is for by 22,23 casings that constitute jointly of left and right molded casing.Not having not in the inboard of left and right molded casing 22,23 with prior art, also is that the two ends of the side that faces each other of left and right molded casing 22,23 respectively are concaved with the arc extinguishing grid pieces chamber.For convenience of description, two arc extinguishing grid pieces chambeies that the applicant will be arranged with on the molded casing 22 in a left side are defined as left arc extinguishing grid pieces chamber 221, in like manner, the a pair of arc extinguishing grid pieces chamber that is arranged with on the molded casing 23 in the right side is defined as right arc extinguishing grid pieces chamber 231, and aforesaid two groups of arc extinguishing grid pieces 26 just are in 221,231 arc extinguishing grid pieces chambeies that cooperate jointly and form, left and right arc extinguishing grid pieces chamber.Moving contact 251 and fixed contact 252 interactively that is provided with between position and set-up mode and moving contact 251 and the fixed contact 252 in left and right molded casing 22,23 belongs to known technology, for example equally by CN1041361C introduced and by the form that Fig. 6 disclosed of this patent.
As the technical spirit of technical scheme of the present invention, each standard one pole recited above arc-control device 2 that opens circuit is respectively disposed a backing pressure tripping mechanism 21 that is used to accept also can to claim to respond the direct effect of the arcing gas pressure that is produced when being opened by dynamic and static contact 251, the 252 phase mutual exclusions of described sound contact assembly 25 and uses unlock piece 31 releases that drive described operating mechanism 3.What the applicant need state is: a left side of repeatedly mentioning in the above or title repeatedly defines, right molded casing 22, the 23rd, comparatively speaking, based on this reason, can know by inference fully operating air pressure chamber 222 is opened on the right molded casing 23, and will follow the outer wall that also is opened in right molded casing 23 in the containing cavity 223 that is used to backing pressure tripping mechanism 21 is set in operating air pressure chamber 222, to be transferred on the left molded casing 22 by the gas passage 232 and 233 pairs of the venting cavities of detection that are opened on the right molded casing 23 shown in Figure 3 at present adaptably therewith, so, can't be the directionality definition restriction technical scheme of the present invention of technical characterictic with definition by Reference numeral.Below description be aimed at present by the location status shown in this figure.In the portion on the upper side of the molded casing 22 in a left side and above corresponding to the previous arc extinguishing grid pieces chamber in a pair of left arc extinguishing grid pieces chamber 221, offered the operating air pressure chamber 222 that a shape is not subjected to illustrating restriction, a side in the operating air pressure chamber 222 also narrow air intake duct 2221 that shortened into.Preferred and not necessarily on the inwall of the molded casing 22 in a left side and corresponding to the position in operating air pressure chamber 222 with the scarf locate mode as be provided with a dividing plate 27 in the tenon mode of closing, by dividing plate 27 operating air pressure chamber 222 retainings are closed, only communicate with air intake duct 2221 by the air admission hole 271 that occupy dividing plate 27 central authorities substantially, the moving contact 251 that stems from the arc extinguishing grid pieces chamber, a left side 221 enters air intake duct 2221 with the arcing gas that fixed contact 252 is produced when mutual exclusion is opened mutually through air admission hole 271, and because air intake duct 2221 is to introduce passage as the gases at high pressure in operating air pressure chamber 222, therefore by air intake duct 2221 high-voltage arc gas is introduced in the operating air pressure chamber 222, the gases at high pressure that enter into operating air pressure chamber 222 can directly act on the backing pressure tripping mechanism 21 that is located at the containing cavity 223 that is opened in operating air pressure chamber 222 corresponding positions when overflowing.
Please continue referring to Fig. 3, provided preferred but be not a kind of concrete structure of the backing pressure tripping mechanism 21 that definitely is limited to, it comprises an air pressure push rod 211, a pressure elastic component 212 and a push piece 213, the bottom of air pressure push rod 211 is a feet 2111, feet 2111 movably be plugged on containing cavity 223 bottoms narrow contract be used for feet groove 2232 for feet 2111 compensation, preferably, bottom end face to feet 2111 is designed to the mortar head, so that form a good revolution fulcrum, promptly with between the diapire of feet groove 2232 realize that the mortar shape cooperates, the top of air pressure push rod 211 is stuck in containing cavity 223, and it leans out degree should satisfy the unlock piece 31 (Fig. 2 shows) that is activated operating mechanism 3; Push piece 213 both can directly be configured in the portion on the upper side of air pressure push rod 211, here alleged direct configuration is meant: push piece 213 and air pressure push rod 211 integral productions are shaped, also push piece 213 can be made the back separately is fixed on the air pressure push rod 211 with welding or other similar fixed form, this fixed form is the indirect configuration of above-mentioned definition, and present embodiment is selected the latter.On push piece 213, be formed with a level and smooth and atmospheric pressure acting surface 2131 that be substantially rectangle, the position of atmospheric pressure acting surface 2131 is in containing cavity 223 tops and expands in the push jack chamber 2231 of establishing, and gas outlet in the face of operating air pressure chamber 222, so that accept the effect of the pressed gas of drawing the gas outlet, at ordinary times, be about to below under the effect of the pressure elastic component 212 mentioned, these atmospheric pressure acting surface 2131 closures or title are fitted on the gas outlet in operating air pressure chamber 222, and have only the aforesaid pressed gas of arcing gas that when aforesaid moving contact 251 is scolded out with fixed contact 252, is produced in regular turn through left arc extinguishing grid pieces chamber 221, air admission hole 271, air intake duct 2221 enters operating air pressure chamber 222 and just under the active force that overcomes pressure elastic component 212 push piece 213 is activated when effluxing, and drives 211 swings of air pressure push rods by push piece 213; Pressure elastic component 212 is a spring, the elastic force of this spring and gas pressure intensity (size) are suitable, one end bearing of pressure elastic component 212 is on the spring base 2112 that is arranged with on the air pressure push rod 211, spring base 2112 is corresponding to the back of push piece 213, and the other end of pressure elastic component 212 supporting (keeping out) is on the wall of the chamber in push jack chamber 2231.Atmospheric pressure acting surface 2131 above-mentioned also can be processed into basin shape or bowl-type, and cover is put the place, gas outlet in operating air pressure chamber 222.
Still see also Fig. 3, on the right side inwall of molded casing 23 and corresponding to the top in one of them chamber in a pair of right arc extinguishing grid pieces chamber of stating 231 offer the detection venting cavity 233 that a shape is not illustrated restriction, on the inwall that detects venting cavity 233, offer an air channel 2331, air channel 2331 with offer (being arranged with) gas passage 232 on the inwall of the molded casing 23 in the right side and communicate, gas passage 232 communicates with right arc extinguishing grid pieces chamber 231, offers air pressure and detect hole 2332 on the outer wall that on the outer wall that detects venting cavity 233 also is right molded casing 23.At ordinary times, air pressure detect hole 2332 by be inlaid in detect in the venting cavity 233 have from recovery function and close by air pressure valve block 24 retainings that spring leaf is made.Yet, when the arc-control device 2 that will open circuit to the standard one pole carry out such as the online detection in the production process go out the preceding detection of lotus (dispatching from the factory) or installing enable before or when needing that in assembling process force value done calibration or the like, under the situation of backing down air pressure valve block 24, introduce detection venting cavity 233 as long as will detect gas so by means of air pressure detection hole 2332, in regular turn through air channel 2331, gas passage 232 enters right arc extinguishing grid pieces chamber 231, because according to known general knowledge, a left side, right arc extinguishing grid pieces chamber 221, the 231st, communicate with each other, therefore riddle by a left side when detecting gas, right arc extinguishing grid pieces chamber 221,231 the common arc extinguishing grid pieces chamber that forms and reach corresponding or claim desired dropout force value after, just can be successively through air admission hole 271, air intake duct 2221 enters operating air pressure chamber 222, the push piece 213 that closes on the gas outlet is promptly backed down in gas outlet actuating by operating air pressure chamber 222,212 compressions of pressure elastic component, 211 swings of air pressure push rod are by the unlock piece 31 of air pressure push rod 211 driving operating mechanisms 3.Here, the applicant also need to prove: still be not enough to reach the consummate degree that need not to detect and can meet the standard of zero tolerance owing to comprise the technological means of manufacturing equipment, technology at present, therefore, detection venting cavity 233 above-mentioned, air channel 2331, gas detecting hole 2332, gas passage 232 and air pressure valve block 24 only belong to a kind of technological means of doing something against one's will, and use the fail safe of abundant guarantee single-pole modular low-voltage breaker.
Embodiment 3:
Ask for an interview Fig. 4, provided the another kind of execution mode of backing pressure tripping mechanism 21.This mechanism movably is arranged on one of them molded casing in the left and right molded casing 22,23, in the shell wall of this example for the length direction that is arranged on left molded casing 22, and an end of shell wall partially.The open circuit sound contact assembly 25 of arc-control device 2 of the standard one pole that disposes this backing pressure tripping mechanism 21 shows as the single contact structure, the shell wall inboard of molded casing 22 offers air intake duct 2221 on a left side, air intake duct 2221 communicates with the left arc extinguishing grid pieces chamber 221 of an end of left molded casing 22, and communicate with the operating air pressure chamber 222 of molded casing 22 other ends in a left side, the top in operating air pressure chamber 222 is the containing cavity 223 that is used to hold backing pressure tripping mechanism 21.Backing pressure tripping mechanism 21 comprises air pressure push rod 211, pressure elastic component 212 and push piece 213, the lower end of air pressure push rod 211 is stretched in the containing cavity 223, the upper end is stuck in containing cavity 223 outer promptly being stretched over outside the left molded casing 22, push piece 213 is fixed on the bottom of air pressure push rod 211, pressure elastic component 212 is nested with on air pressure push rod 211, keep out on the molded casing 22 in a left side upper end, and the lower end is bearing on the push piece 213.The arcing gas pressure that is produced when being opened by dynamic and static contact 251, the 252 phase mutual exclusions of sound contact assembly 25 enters air intake duct 2221 from left arc extinguishing grid pieces chamber 221, and then enter operating air pressure chamber 222 and promote push pieces 213, pressure elastic component 212 compression, air pressure push rod 211 is protruding and activate the unlock piece 31 of operating mechanism 3.All the other are with the description to embodiment 2.In addition, though only mentioned left molded casing 22 in this example, can know the right molded casing 23 of same structure fully according to general knowledge by inference, promptly left and right molded casing the 22, the 23rd disposes in pairs.
Embodiment 4:
Ask for an interview Fig. 5, provided also a kind of execution mode of backing pressure tripping mechanism 21, this backing pressure tripping mechanism 21 movably is arranged on one of them molded casing in the left and right molded casing 22,23, present embodiment is to be arranged in the shell wall of length direction of left molded casing 22, and an end of shell wall partially.Open circuit arc-control device 2 of the standard one pole that disposes this backing pressure tripping mechanism 21 shows as the single contact structure for sound contact assembly 25.Constitute operating air pressure chamber 222 in the molded casing 22 in a left side, operating air pressure chamber 222 communicates with left arc extinguishing grid pieces chamber 221.Backing pressure tripping mechanism 21 comprises air pressure push rod 211, pressure elastic component 21 and push piece 213, the lower end of air pressure push rod 211 be stretched in the operating air pressure chamber 222 and hub setting on the inwall of the molded casing 22 in a left side, the upper end is stretched over outside the left molded casing 22, push jack 213 with heeling condition be arranged on the air pressure push rod 211, here the heeling condition of being said is meant and is formed with a 100-130 ° angle between push jack 213 and the air pressure push rod 211, pressure elastic component 212 is the outside that spring is arranged on left molded casing 22, one end bearing is on the outer steps 224 of the molded casing 22 in a left side, and the other end is bearing on the air pressure push rod 211.The arcing gas pressure that is produced when 251, the 252 phase mutual exclusions of the dynamic and static contact of sound contact assembly 25 are opened directly promotes push piece 213, thereby makes 211 actions of air pressure push rod and the unlock piece 31 of driving operating mechanism 3, meanwhile, and 212 compressions of pressure elastic component.All the other are with the description to embodiment 2.In addition,, can know the right molded casing 23 of same structure fully by inference, because left and right molded casing the 22, the 23rd cooperatively interacts though only mentioned left molded casing 22 in this example.
By the explanation of applicant to embodiment 3 and embodiment 4; can know fully; it is a kind of preferred and nonrestrictive and be directed to or the open circuit version of arc-control device 2 of the standard one pole that claims to be suitable for double-contact that embodiment 2 described backing pressure tripping mechanisms 21 only belong to; therefore; no matter anyly backing pressure tripping mechanism 21 is disposed at open circuit technological means in the arc-control device 2 and the concrete structure of backing pressure tripping mechanism 21 of one pole changes, all should be considered as protection scope of the present invention.
Application examples:
See also Fig. 6, it is four standard one poles that the custom of example is referred to as four utmost points arc-control devices 2 that open circuit with Fig. 3 structure that present embodiment has provided four, be the N utmost point, the A utmost point, the B utmost point and the C utmost point, each standard one pole arc-control device 2 that opens circuit has backing pressure tripping mechanism 21, after in the seat chamber that is installed to pedestal shown in Figure 2 11, shown the environment that has relative closure separately significantly, no longer had alternate public space or claim passage.That is to say, by backing pressure tripping mechanism 21 is set, realized by operating air pressure chamber 222 substitute in the prior arts and by phase partition air chamber 6 shown in Figure 1 and dividing plate gas channels in series 5, thereby reduced the intermediate link of gas passage effectively, because the passage of the gases at high pressure in the prior art is as seen from Figure 1: arc extinguishing grid pieces chamber → alternate clamping plate air chamber 6 → clamping plate gas channels in series 5 → air pressure push rod 211, and gases at high pressure passage of the present invention shown in Figure 6 is: therefore 221 → operating air pressure chamber, left arc extinguishing grid pieces chamber, 22 → air pressure push rod 211 has the advantage of quick disjunction.
Still see also Fig. 6 and in conjunction with Fig. 2 and Fig. 3, the applicant sketches operation principle of the present invention, when short circuit current occurring in the circuit, under the effect of short circuit current, moving contact 251 just and between the fixed contact 252 produces electrodynamic repulsion force, be moving contact 251 with fixed contact 252 mutually mutual exclusion open, when scolding out, moving, fixed contact 251, produce electric arc between 252, and follow gases at high pressure, gases at high pressure are full of in by a left side that communicates with each other, right arc extinguishing grid pieces chamber 221,231 in the common whole arc extinguishing grid pieces chamber that constitutes, gases at high pressure just enter operating air pressure chamber 222 through air intake duct 2221, the push piece 213 that gas outlet or title exhaust outlet in operating air pressure chamber 222 acts on backing pressure tripping mechanism 21, promptly act on the atmospheric pressure acting surface 2131 of push jack chamber part 213, after reaching the active force that is enough to overcome pressure elastic component 212, drive 211 actions of air pressure push rods, activate the unlock piece 31 of the operating mechanism 3 of Fig. 2 signal by air pressure push rod 211 by push piece 213, make circuit breaker reach release, promptly reach quick disjunction.
In sum, technical scheme of the present invention is that backing pressure tripping mechanism 21 is embodied in the standard one pole opens circuit arc-control device 2, constitutes community, and the standard one pole is opened circuit, and arc-control device 2 is given backing pressure tripping mechanism 21 and form the one pole modularization.The present invention is not limited only to top specific embodiment naturally; but on the basis of spirit that does not break away from technical scheme of the present invention or essential attribute, can extensively extend to other some embodiment; therefore the foregoing description is not subjected to the restriction of any details described above; any on this feature base change or revise all within protection scope of the present invention, the variations in detail of for example cancelling correlation technique feature that dividing plate 27, relating to of having set forth above the cancellation be used to detect etc. is all in this patent scope.
Claims (10)
1, a kind of single-pole modular low-voltage breaker, it comprises by a pedestal (11) and is configured in the shell (1) that the lid (12) on the pedestal (11) constitutes, be contained in a plurality of standard one poles in the pedestal (11) arc-control device (2) that opens circuit, one is placed in the trip gear (4) that orders about described operating mechanism (3) action when overload and/or the short trouble in the pedestal (11) with open circuit the operating mechanism with unlock piece (31) (3) that arc-control device (2) matches and one of described standard one pole, the described standard one pole arc-control device (2) that opens circuit comprises a left side, right molded casing (22,23), be located at a left side, right molded casing (22,23) sound contact assembly (25) in and being placed in of matching with sound contact assembly (25) are by the arc extinguishing grid pieces (26) in the common arc extinguishing grid pieces chamber that forms of right arc extinguishing grid pieces chamber (231) institute of the left arc extinguishing grid pieces chamber (221) of the molded casing in a left side (22) and right molded casing (23), it is characterized in that the described standard one pole arc-control device (2) that opens circuit also includes one and is used for accepting moving by described sound contact assembly (25), the direct effect of the arcing gas pressure that the mutual exclusion of fixed contact phase is produced when opening and use the backing pressure tripping mechanism (21) of unlock piece (31) release that drives described operating mechanism (3), this backing pressure tripping mechanism (21) movably is arranged on a described left side, right molded casing (22, appointing 23) selected on the shell wall of a molded casing.
2, single-pole modular low-voltage breaker according to claim 1, it is characterized in that described backing pressure tripping mechanism (21) movably is arranged on outside the length direction and shell wall of one of them the molded casing in the described left and right molded casing (22,23), and an end of inclined to one side shell wall.
3, single-pole modular low-voltage breaker according to claim 1, it is characterized in that described backing pressure tripping mechanism (21) movably is arranged in the shell wall of length direction of one of them the molded casing in the described left and right molded casing (22,23), and an end of shell wall partially.
4, single-pole modular low-voltage breaker according to claim 1, it is characterized in that: the molded casing in a described left side (22) is gone up and is offered an operating air pressure chamber (222) that is used to collect gases at high pressure in the top corresponding to left arc extinguishing grid pieces chamber (221), and this operating air pressure chamber (222) communicates with left arc extinguishing grid pieces chamber (221); On outer wall, offer a containing cavity (223) corresponding to the left molded casing (22) in described operating air pressure chamber (222), described backing pressure tripping mechanism (21) is arranged on the described containing cavity (223), is activated by the arcing gas in operating air pressure chamber (222).
5, single-pole modular low-voltage breaker according to claim 1, it is characterized in that: on the inwall of the molded casing in a described left side (22) and partially an end of the length direction of inwall constitutes the operating air pressure chamber (222) that is used to collect gases at high pressure, and this operating air pressure chamber (222) communicates with left arc extinguishing grid pieces chamber (221); Be formed with a containing cavity (223) in top corresponding to the left molded casing (22) in described operating air pressure chamber (222), described backing pressure tripping mechanism (21) is arranged in the described containing cavity (223), is activated by the arcing gas in operating air pressure chamber (222).
6, single-pole modular low-voltage breaker according to claim 4, it is characterized in that: the top expansion of described containing cavity (223) has been set as a push jack chamber (2231), the narrow feet groove (2232) that shortened in bottom, described backing pressure tripping mechanism (21) comprises an air pressure push rod (211), an one pressure elastic component (212) and a push piece (213), the lower end of air pressure push rod (211) constitutes feet (2111) and is plugged in the described feet groove (2232), the upper end is stuck in containing cavity (223), push piece (213) is configured in the portion on the upper side of air pressure push rod (211) with any one configuration mode of direct or indirect configuration and corresponding to position, described push jack chamber (2231), constitute an atmospheric pressure acting surface (2131) on the push piece (213), this atmospheric pressure acting surface (2131) is towards the gas outlet in described operating air pressure chamber (222), be used for the effect that acceptance comes from the gases at high pressure in operating air pressure chamber (222), pressure elastic component (212) is arranged in the push jack chamber (2231), one end bearing is on pressure push-rod (211), and axially corresponding with push piece (213), the other end is bearing on the chamber wall in push jack chamber (2231).
7, single-pole modular low-voltage breaker according to claim 5, it is characterized in that: described backing pressure tripping mechanism (21) comprises an air pressure push rod (211), an one pressure elastic component (212) and a push piece (213), the lower end of pressure push-rod (211) is stretched in the described operating air pressure chamber (222), the upper end is stuck in operating air pressure chamber (222), push piece (213) is installed in the bottom of pressure push-rod (211), with operating air pressure chamber (222) and containing cavity (233) sealed separation, pressure elastic component (212) is nested with on pressure push-rod (211), the upper end is bearing on the left molded casing (22), and the lower end is bearing on the push piece (213).
8, single-pole modular low-voltage breaker according to claim 5, it is characterized in that: described backing pressure tripping mechanism (21) comprises an atmospheric pressure pole (211), an one pressure elastic component (212) and a push piece (213), the lower end of pressure push-rod (211) be stretched in the described operating air pressure chamber (222) and hub setting on the inwall of the molded casing in a left side (22), an and end of the length direction of inclined to one side inwall, the upper end of pressure push-rod (211) is stuck in operating air pressure chamber (222), push jack (213) with heeling condition be arranged on the bottom of air pressure push rod (211) and towards described arc extinguishing grid pieces chamber (221), pressure elastic component (212) is arranged on the outside of left molded casing (22), the one end bearing is on the outer steps (224) of the molded casing in a left side (22), and the other end is bearing on the body of rod of upper end of pressure push-rod (211).
9, single-pole modular low-voltage breaker according to claim 4, it is characterized in that: also narrow the contracting in described operating air pressure chamber (222) has an air intake duct (2221), be embedded with one in the inside upper part of the molded casing in a described left side (22) and at position and be used for the dividing plate (27) that the accent with operating air pressure chamber (222) covers corresponding to described operating air pressure chamber (222), offer an air admission hole (271) on the dividing plate (27), air admission hole (271) communicates with left arc extinguishing grid pieces chamber (221), and corresponding with air intake duct (2221) and communicate.
10, single-pole modular low-voltage breaker according to claim 1, it is characterized in that: the inwall of the molded casing in the described right side (23) and constitute on top and detect venting cavity (233) corresponding to described right arc extinguishing grid pieces chamber (231), offer air channel (2331) on the inwall of detection venting cavity (233), air channel (2331) communicates with the gas passage 232 that is arranged with on the inwall of the molded casing in the right side (23), gas passage (232) communicates with right arc extinguishing grid pieces chamber (231), detect and to offer a pressed gas that is used for to detect usefulness on the outer wall of venting cavity (233) and be incorporated into and detect the air pressure that venting cavity (233) goes and detect hole (2332), be embedded with one in the described detection venting cavity (233) and be used for retaining and hold one's breath and press to detect the air pressure valve block (24) in hole (2332), described air pressure valve block (24) is for having the flexure strip from recoverability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100186630A CN101241820B (en) | 2008-03-07 | 2008-03-07 | Single-pole modular low-voltage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100186630A CN101241820B (en) | 2008-03-07 | 2008-03-07 | Single-pole modular low-voltage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101241820A true CN101241820A (en) | 2008-08-13 |
| CN101241820B CN101241820B (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100186630A Active CN101241820B (en) | 2008-03-07 | 2008-03-07 | Single-pole modular low-voltage breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104465214A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Monopole module with air blowing mechanism |
| CN104599908A (en) * | 2015-01-23 | 2015-05-06 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage circuit breaker |
| CN108461359A (en) * | 2017-02-22 | 2018-08-28 | 施耐德电器工业公司 | The switchgear for electric current with separable electric contact and air switch |
| EP3379553A1 (en) * | 2017-03-21 | 2018-09-26 | LSIS Co., Ltd. | Circuit breaker including single pole breaking unit |
| CN109994346A (en) * | 2017-12-29 | 2019-07-09 | 伊顿智能动力有限公司 | Monopole or multipole circuit breaker and modular system |
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2008
- 2008-03-07 CN CN2008100186630A patent/CN101241820B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465214A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Monopole module with air blowing mechanism |
| CN104465214B (en) * | 2013-09-24 | 2017-09-15 | 上海电科电器科技有限公司 | Monopole module with air-blowing mechanism |
| CN104599908A (en) * | 2015-01-23 | 2015-05-06 | 常熟开关制造有限公司(原常熟开关厂） | Low-voltage circuit breaker |
| CN108461359A (en) * | 2017-02-22 | 2018-08-28 | 施耐德电器工业公司 | The switchgear for electric current with separable electric contact and air switch |
| CN108461359B (en) * | 2017-02-22 | 2021-10-29 | 施耐德电器工业公司 | Switch device for electric current with separable electrical contacts and air switch |
| EP3379553A1 (en) * | 2017-03-21 | 2018-09-26 | LSIS Co., Ltd. | Circuit breaker including single pole breaking unit |
| US20180277316A1 (en) * | 2017-03-21 | 2018-09-27 | Lsis Co., Ltd. | Circuit breaker including single pole breaking unit |
| CN108630507A (en) * | 2017-03-21 | 2018-10-09 | Ls产电株式会社 | Include the breaker of monopole switching units |
| CN109994346A (en) * | 2017-12-29 | 2019-07-09 | 伊顿智能动力有限公司 | Monopole or multipole circuit breaker and modular system |
| CN109994346B (en) * | 2017-12-29 | 2021-08-03 | 伊顿智能动力有限公司 | Single-pole or multi-pole circuit breaker and modular system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101241820B (en) | 2010-06-30 |
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