The thief-proof electric power meter of plug-in type
Technical field
The utility model relates to electric power meter, is specifically related to the electric power meter of the anti-electricity-theft performance of a kind of tool.It can independently be installed, and also can be installed in the low-voltage complete power distribution equipment to use as the electric energy metrical cabinet.
Background technology
The resident's power supply and the industrial or agricultural electric power system distributed areas of China are huge, electric power system terminal--electric power meter, spread all in each family and all kinds of industrial and mining enterprises in vast town and country, because the backwardness of the protective equipment of existing electric power meter, the phenomenon that theft State Grid resource is escaped the electricity charge happens occasionally.
In the prior art, the structure of electric power meter is: form by casing, case lid and electric energy meter, casing by diapire and all around sidewall constitute, electric energy meter is installed on the diapire in the casing, offer entrance hole and wire hole on the wall box.During installation, installation personnel with inlet wire and outlet through entrance hole with in wire hole feeds case by the mode of connection of manual binding post and corresponding connection of connection terminal on the electric energy meter.
Though this electric power meter is simple in structure, cheap, but have following defective: the wiring of connection box of electric energy meter terminal relies on the manual wiring of installation personnel, outside manual wiring circuit and end of incoming cables are exposed to, after the stealing personnel tended to open case lid, directly power taking from the end of incoming cables made electric energy meter lose the metering effect, to escape the electricity charge, theft State Grid resource.
Summary of the invention
Connection box of electric energy meter circuit that the utility model exists at prior art and end of incoming cables are exposed to outer easily by the juggle things technical matters of stealing of electricity filching person, provide a kind of plug-in type thief-proof electric power meter.
For achieving the above object, the technical solution adopted in the utility model is: the thief-proof electric power meter of a kind of plug-in type comprises casing, case lid and electric energy meter;
One ammeter combination hub is arranged in the casing, inner chamber is separated into up and down or about two spaces, one encapsulation dividing plate is wherein arranged in the space again, two parts before and after dividing the space into, wherein, back space is by casing and encapsulates dividing plate and the inlet wire chamber of the thief-proof sealing that the ammeter combination hub surrounds that the inlet wire chamber is provided with incoming line;
Ammeter combination hub and casing welding, bonding or in the inlet wire cavity space, be connected by screw; Adding seal structure by the pin hook between encapsulation dividing plate and the casing fixedlys connected, described pin hook adds seal structure and is made of pin hook element, pin-and-hole and button bit three cooperation, pin-and-hole is opened on the encapsulation dividing plate, on the then corresponding casing that is arranged in the inlet wire chamber of button bit, described pin hook element has fixture block, stretch out barb arm on the fixture block, the head of barb arm is a barb; The barb arm of pin hook element is passed the button bit in the pin-and-hole insertion inlet wire chamber, and its barb and button bit hook together, and the fixture block of tail end blocks the aperture of pin-and-hole;
Described inlet wire is provided with electric energy meter outside the chamber, and the input terminal of this electric energy meter is a conduction latch arranged side by side; Described ammeter combination hub has the closure casing of a hollow, is provided with input terminal in the housing, and this input terminal stretches out to the inlet wire chamber in housing; The conduction latch of corresponding electric energy meter is provided with one group of socket aperture on the housing of ammeter combination hub, and correspondence is provided with jack assemblies in each socket aperture, and each jack assemblies is electrically connected with corresponding input terminal respectively; The conduction latch of described electric energy meter is plugged in the corresponding socket aperture and connects.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described electric energy meter is installed on the front side of encapsulation dividing plate.
2, in the such scheme, described pin hook adds seal structure the best: stretch out symmetrical two barb arm on the fixture block of described pin hook element, each is provided with barb in both sides to the left and right on their head, described button bit comprises at a distance of left side button piece that is provided with and right button piece, the room that the head that left side button piece and right button interblock form supply and marketing hook element embeds; During locking, the head of described pin hook element embeds in the button bit, and the hook face of left side barb hooks together with left side button piece, and the hook face of right side barb hooks together with right button piece.
3, in the such scheme, convex with two grafting lugs on the described encapsulation dividing plate on an end edge of ammeter combination hub, and correspondence is provided with slot on the ammeter combination hub, this end of encapsulation dividing plate is by the slot socket connection on grafting lug and the ammeter combination hub.
4, in the such scheme, described encapsulation dividing plate the best is to adopt the transparent panel material, makes people can observe wiring situation in the inlet wire chamber by transparent encapsulation dividing plate, so that power supply department is checked at any time and supervised.
5, in the such scheme, described input terminal quantity can be two or four usually, is corresponding live wire and zero line in the time of two, becomes the single-phase electric energy measuring apparatus; Be corresponding three phase lines and a center line in the time of four, become the three-phase and four-line electric power meter.
6, in the such scheme, described " welding of ammeter combination hub and casing, bonding or in the inlet wire cavity space, is connected " by screw, being meant has two kinds of connected modes between ammeter combination hub and casing: the one, the ammeter combination hub welds with casing, the non-dismountable formula of bonding formation is connected; Two ammeter combination hubs are connected by screw is detachable in the inlet wire cavity space with casing.Above-mentioned two schemes have all reached does not open the purpose of inlet wire chamber with regard to non-dismountable ammeter combination hub earlier.
Design concept of the present utility model is: the utility model has added the ammeter combination hub in casing, connect electric energy inlet wire and electric energy meter by the ammeter combination hub, encapsulate again after installation personnel is connected in the electric energy inlet wire on the ammeter combination hub and go up the encapsulation dividing plate, just non-dismountable after this encapsulation dividing plate one-step installation, in casing, be separated out an inlet wire chamber by encapsulation dividing plate and ammeter combination hub, input terminal on the ammeter combination hub is shut in the inlet wire chamber, make the user can't touch input terminal, avoid people's direct power taking, improved the anti-electricity-theft performance of electric power meter from the end of incoming cables.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, because the utility model is separated out the inlet wire chamber of a relative closure by ammeter combination hub and encapsulation dividing plate, input terminal is shut in the inlet wire chamber, prevent stealing personnel direct power taking from the end of incoming cables, if the stealing personnel illegally open the inlet wire chamber and will inevitably destroy the pin hook and add pin hook element in the seal structure, be convenient to power supply department and find and prevent electricity filching behavior.
2, because the wiring of the utility model electric energy meter has substituted the existing manual mode of connection by simple plug-in socket connected mode, the wiring circuit all is packaged in the ammeter combination hub in advance, need only when installation personnel is installed corresponding the pegging graft of electric energy meter put in place, easy for installation, quick, be difficult for makeing mistakes; And it is big that the plug of electric energy meter and the jack assemblies of ammeter combination hub are connected surface of contact, and it is firm that the wiring in the ammeter combination hub also connects, and current-carrying is bigger, and is safer.
Description of drawings
Accompanying drawing 1 is for a dozen unpacking lids of the utility model embodiment and removed the structural representation behind the electric energy meter;
Accompanying drawing 2 is the STRUCTURE DECOMPOSITION synoptic diagram after the encapsulation dividing plate of accompanying drawing 1 is dismantled;
Accompanying drawing 3 adds the synoptic diagram of the pin hook element of seal structure for the pin hook of the utility model embodiment one;
Accompanying drawing 4 adds the synoptic diagram of seal structure for the pin hook of the utility model embodiment one;
Accompanying drawing 5 is the inner structure synoptic diagram after the utility model embodiment one ammeter combination hub is opened housing;
Accompanying drawing 6 is the one-piece construction synoptic diagram after the utility model embodiment one unloads case lid;
Accompanying drawing 7 is the external cabling synoptic diagram of the utility model embodiment one electric energy meter.
In the above accompanying drawing: 1, casing; 3, ammeter combination hub; 4, encapsulation dividing plate; 5, inlet wire chamber; 6, incoming line; 7, diapire; 8, sidewall; 9, conductive pole; 10, input terminal; 13, electric energy meter; 14, conducting strip; 15, socket aperture; 16, jack assemblies; 17, the pin hook adds seal structure; 18, pin-and-hole; 19, button bit; 20, pin hook element; 21, fixture block; 22, barb arm; 23, stop step; 24, barb; 25, left side button piece; 26, right button piece; 27, grafting lug; 28, slot; 29, resilient barb; 30, end of incoming cables; 31, leading-out terminal; 32, the turnover line terminals of electric energy meter; 33, screw.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 6, the thief-proof electric power meter of a kind of female type, its concrete still electric power meter of a direct-type three-phase and four-line, it comprises casing 1, case lid and three-phase and four-line electric energy meter 13, and described casing 1 is the rectangular box that is made of diapire 7 and sidewall all around 8.
Shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 6, described casing 1 middle part is provided with an ammeter combination hub 3, this ammeter combination hub 3 is divided into upper and lower two parts with casing 1 inner chamber, in top, be provided with an encapsulation dividing plate 4 again, two parts before and after this encapsulation dividing plate 4 divides the space into again, wherein, back space is surrounded by casing 1 and encapsulation dividing plate 4 and ammeter combination hub 3, and this back space relative closure and as inlet wire chamber 5 is provided with incoming line 6 corresponding to inlet wire chamber 5 on the sidewall 8 of casing 4.
Shown in accompanying drawing 1, accompanying drawing 2, described ammeter combination hub 3 is fixedlyed connected by screw 33 in inlet wire chamber 5 with casing 1, adds seal structure 17 by the pin hook between encapsulation dividing plate 4 and the casing 1 and fixedlys connected.See shown in accompanying drawing 3 and the accompanying drawing 4, described pin hook adds seal structure 17 and is made of pin hook element 20, pin-and-hole 18 and button bit 19 threes cooperation, described pin-and-hole 18 is opened on the encapsulation dividing plate 4,19 correspondences of button bit are arranged on the inner face of sidewall 8 of the casing 1 in the inlet wire chamber 5, described pin hook element 20 has fixture block 21, stretch out symmetrical two barb arm 22 on the fixture block 21, the head of this two barb arm 22 both sides to the left and right is provided with barb 24; Described fixture block 21 be provided with pin-and-hole 18 aperture contact matching stop step 23; Described button bit 19 comprises that at a distance of the left side of setting button piece 25 and right button piece 26, left button piece 25 and 26 of right button pieces form the room of the head embedding of supply and marketing hook element 20; During locking, the head of described pin hook element 20 embeds in the button bit 19, and the hook face of left side barb 24 hooks together with left side button piece 25, and the hook face of right side barb 24 hooks together with right button piece 26, and the step 23 that stops on the fixture block 21 of tail end blocks the aperture of pin-and-hole 18.
Shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 6, describedly on the encapsulation dividing plate 4 of 5 front sides, inlet wire chamber, electric energy meter 13 is set, the input terminal of described electric energy meter 13 is the conduction latch; Described ammeter combination hub 3 has the closure casing of a hollow, is provided with four three-phase input terminals 10 in the housing, and they correspond respectively to A phase, B phase, C phase and center line, and these four input terminals 10 stretch out to inlet wire chamber 5 in housing.To being provided with one group of totally four electric energy meter socket aperture 15 by electric energy meter 13, each socket aperture 15 interior correspondence is provided with 16, four jack assemblies 16 of jack assemblies and four input terminals 10 connect one to one by conducting strip 14, sees accompanying drawing 5 on the housing of table combination hub 3.The conduction latch of described electric energy meter 13 is plugged in the electric energy meter socket aperture 15, with the 16 corresponding electrical connections of four jack assemblies.
Shown in accompanying drawing 1, accompanying drawing 2, above-mentioned encapsulation dividing plate 4 convexes with two grafting lugs 27 on an end edge of ammeter combination hub 3, and correspondence is provided with slot 28 on the ammeter combination hub 3, this end of encapsulation dividing plate 4 is by slot 28 socket connections on grafting lug 27 and the ammeter combination hub, and the both sides on the other end of encapsulation dividing plate 4 respectively add seal structure 17 by a pin hook and fixedly connected with the inner face of wall box 8.
Referring to accompanying drawing 1, shown in the accompanying drawing 2, above-mentioned ammeter combination hub 3 is that the screw 33 by the bottom is connected with casing diapire 7 in inlet wire chamber 5, when sealing inlet wire chamber 5, also just the screw 33 of ammeter combination hub 3 has also been sealed by encapsulation dividing plate 4, it is non-detachable promptly not pulling down encapsulation dividing plate 4 ammeter combination hubs 3 earlier, and encapsulation dividing plate 4 adds seal structure 17 by the pin hook and is connected on the wall box 8, in case just can not open so inlet wire chamber 5 installation pin hooks add seal structure 17 locking backs, unless barb arm 22 with instrument break pin hook element 20, after destroying disconnected pin hook element 20, just can open inlet wire chamber 5.Pin hook element 20 is a special part, and lawless people can't obtain, and promptly can't recover after destruction is opened, and knows at a glance when power supply department is tabled look-up.
In the present embodiment, see shown in the accompanying drawing 1,2 that outwards also be equipped with the conductive pole 9 of a corresponding ground wire on the described ammeter combination hub 3 from inlet wire chamber 5, this conductive pole 9 is arranged in an end in inlet wire chamber 5 as end of incoming cables 30, the other end is as leading-out terminal 31, so that installation personnel inserts ground wire.
And, shown in accompanying drawing 1, accompanying drawing 2, described encapsulation dividing plate 4 is provided with the resilient barb 29 that fixes for electric energy meter 13 back sides, the hook face of this resilient barb 29 is towards ammeter combination hub 3, when installing electric energy meter 13 with this, resilient barb 29 is blocked mutually with hook groove on the electric energy meter back side, and electric energy meter is fixed.
Above-mentioned encapsulation dividing plate 4 the bests are to adopt transparent panel as shown in the figure, and the situation in inlet wire chamber 5 is come into plain view, and are beneficial to the abnormal conditions of finding in the inlet wire chamber.
With the supporting electric energy meter of present embodiment, the the 1st, 4,7, No. 10 terminal is that input terminal is the conduction bolt-type in its turnover line terminals 32, and other terminal is an outlet terminal is manual wiring pillar, see the wiring circuit of accompanying drawing 7,1,4,7, No. 10 input terminal of these four conduction bolt-types will be connected to end of incoming cables on A phase, B phase, C phase and the center line just, therefore, four socket apertures on the ammeter combination hub are just corresponding to 1,4,7, No. 10 terminal of electric energy meter.
The use installation process is: installation personnel feeds the three-phase inlet wire in the casing 1 through incoming line 6 earlier, be connected on the input terminal 10 of ammeter combination hub 3, and then with the encapsulation dividing plate 4 input terminal is shut in inlet wire chamber 5, this has just reached the effect of inlet wire sealing, make the user can't touch the end of incoming cables of ammeter, stopped electricity filching person from the end of incoming cables stealing, then, installation personnel is plugged in four of electric energy meter 13 conduction bolt-type terminals in the socket aperture 15 of correspondence of ammeter combination hub 3 again, four conduction bolt-type input terminals reliably are electrically connected with plug-assembly 16 in the electric energy meter combination hub 3, manual binding post from electric energy meter 13 terminal boxes is drawn outlet again, cover case lid at last and add lead sealing, line promptly is installed is finished.
Embodiment two: the anti-electricity-theft electric power meter of a kind of plug-in type, comprise casing, case lid and electric energy meter, and described casing is the rectangular box that is made of diapire and sidewall all around.Be with the difference of embodiment one: it specifically is a single-phase electric energy measuring apparatus, electric energy meter wherein is a single-phase electric energy meter, be provided with two input terminals in the housing of described ammeter combination hub altogether, they are corresponding to live wire and zero line, on the described ammeter combination hub housing again to be provided with two socket apertures with regard to electric energy meter, be provided with jack assemblies in the socket aperture, the corresponding electrical connection of two jack assemblies with two input terminals.And, be bonding the connection between described ammeter combination hub and casing, once connect promptly non-dismountable.Other repeats no more here with embodiment one.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.