CN2257628Y - Fixed AC. high-tension switch cabinet - Google Patents

Abstract

The utility model relates to a fixed AC. high-tension switch cabinet, comprising a cabinet body, a cabinet door, a main bus, a by-pass bus, a supporting porcelain sleeve, a current transformer, a circuit breaker and a main bus disconnecting switch, an outlet line disconnecting switch and a by-pass bus disconnecting switch orderly arranged on a space frame, wherein, the space frame is composed of an upright post, a support rod and a transverse rod; the support rod is vertically fixed on the upright post; the transverse rod is fixedly connected with the corresponding upright post and the corresponding support rod. The utility model has the advantages of small size, compact structure, convenient operation and safe operation.

Description

A kind of fixed ac high-voltage switch cubicle

The utility model relates to the equipment that electric energy was accepted and distributed in a kind of electric power system, particularly a kind of fixed ac high-voltage switch cubicle.

At present, the composition of fixed ac high-voltage switch cubicle generally comprises cabinet, cabinet door, main bus bar, hospital bus bar, support porcelain bushing, current transformer, oil-minimum breaker or vacuum circuit-breaker, main bus bar isolating switch (claiming disconnecting link again, down together), outlet isolating switch, hospital bus bar isolating switch.There is the following shortcoming in it: 1. respectively organize isolating switch (comprising fixed contact (three-phase), movable contact spring (three-phase), rotation axis, connecting lever, connecting rod) and be installed on the support separately, the partial installation in cabinet of these supports, occupy than large space, make the cabinet volume huger, transportation inconvenience, and be not easy to carry out safe isolation in cabinet is installed, maintenance workload is big, use inconvenience, poor stability; 2. when interruption maintenance,, must articulate the three-phase shortcircuit earth connection in the circuit breaker both sides because of no short circuit earthing device in the cabinet temporarily, to prevent that incoming call causes the accident suddenly, by manually articulate and remove short-circuit grounding wire afterwards, workload is big, easily causes wrong the extension and the wrong human accident of tearing open; 3. every group of isolating switch has the plug-type operating mechanism of a cover, this operating mechanism can not be taken into account the mutual locking of switch cubicle operation sequence, also need to realize " five is anti-" function by procedure lock or electromagnetic lock, so-called " five is anti-" is: 1. prevent to draw circuit breaker by mistake, 2. prevent on-load drawing isolating switch, 3. prevent charged hanging ground-wire, 4. prevent switching on earth wire, 5. prevent mistakenly entering charged chamber, and the procedure lock operating process is complicated, and operator quality is had relatively high expectations; 4. in totally-enclosed cabinet, because the short trouble that lead-in wire or other parts cause makes to produce electric arc in the cabinet, gas expands, and may cause destroying the cabinet door and personnel are damaged; 5. do not have spacer assembly between the high-tension switch cabinet, a cabinet fault easily causes to burn operates expansion accident scope.

The purpose of this utility model is, overcomes the shortcoming of the existing aforementioned first aspect of switch cubicle, a kind of compact conformation is provided, is convenient to the fixed ac high-voltage switch cubicle that safety is isolated.

The further purpose of the utility model is, overcomes existing aforesaid all the other shortcomings of switch cubicle, and a kind of fixed ac high-voltage switch cubicle safe and reliable, easy to use is provided.

The composition of the fixed ac high-voltage switch cubicle of the utility model comprises cabinet, cabinet door, main bus bar, hospital bus bar, support porcelain bushing, current transformer, vacuum circuit-breaker or oil-minimum breaker, main bus bar isolating switch, outlet isolating switch, hospital bus bar isolating switch, it is characterized in that respectively organizing isolating switch is installed on the space framework successively, this framework is made up of column, support bar, cross bar, support bar is vertically fixed on the column, fixedly connected corresponding column of cross bar and corresponding support bar.The utility model is assembled in each group isolating switch on the space framework, at first make compact conformation, saved the space, the product design size is dwindled, reduced capital expenditure and area occupied, solved problems such as transportation superelevation, personnel labor intensity be big, next is convenient to carry out safe isolation in cabinet, moreover alleviate installation, maintenance workload, be to have created condition at last for the operating mechanism of operating mechanism and the realization " five prevent " of each group isolating switch is merged into an operation locking mechanism.

With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.

Fig. 1 is the fixed ac high-voltage switch cubicle of a utility model overall structure schematic diagram.

Fig. 2 is an isolating switch space framework vertical view of the present utility model.

Fig. 3 is the B-B of an A portion enlarged diagram among Fig. 1.

Fig. 4 is for to look the cabinet body structure schematic diagram by Fig. 1 left side.

As depicted in figs. 1 and 2, have by column 3 in the fixed ac high-voltage switch cabinet body 30,50, support bar 15,43,49,48, cross bar 2,5,10,16,42 space frameworks of forming, support bar 15,43 are vertically fixed on the column 3, support bar 49,48 are vertically fixed on the column 50, cross bar 2,5,10 fixedly connected columns 3,50, cross bar 16,42 fixedly connected corresponding support bars 15 and 49,43 and 48, main bus bar isolating switch 44, hospital bus bar isolating switch 9, outlet isolating switch 13 is fixedly mounted on the space framework successively, the shared fixed contact 11 of hospital bus bar isolating switch and outlet isolating switch wherein, each organizes the operation rotation axis and the connecting lever 45 of isolating switch, 8,12 are installed on the column.Among Fig. 1,37 is main bus bar isolator operation connecting rod, 20 is hospital bus bar isolator operation connecting rod, 14 are outlet isolator operation connecting rod, 6 is isolating switch movable contact spring pull bar porcelain vase, and other consists of switch cubicle: main bus bar 1, hospital bus bar 7, support porcelain bushing 19, vacuum circuit-breaker 32, current transformer 31.47 are isolating switch movable contact spring support insulator pore among Fig. 2.Embodiment central post and cross bar 16,42 usefulness channel-section steels are manufactured, and cross bar 2,5,10 and support bar are manufactured with angle bar.

Because each group isolating switch is assembled on the space framework, just vacuum circuit-breaker (or oil-minimum breaker) summation current transformer can be installed in the cabinet bottom, thereby can carry out safe isolation easily in cabinet.As shown in Figure 1, the utility model is provided with preceding storehouse dividing plate 41, back storehouse dividing plate 18, last storehouse dividing plate 4, the cabinet spatial separation is become isolation ward down, the preceding isolation ward of going up is gone up isolation ward three parts with the back, before being positioned at, goes up main bus bar isolating switch 44 isolation ward, hospital bus bar isolating switch 9 and outlet isolating switch 13 are positioned at the back and go up isolation ward, vacuum circuit-breaker (or oil-minimum breaker) 32 is positioned at isolation ward front portion down, current transformer 31 is positioned at isolation ward rear portion down, and corresponding preceding Xiamen 34 is set, back Xiamen 29, before to the doorstep 46, the back calls 17, the safety of not only having strengthened respectively organizing in the cabinet between the electrical equipment is isolated, and gives and install, maintenance work brings great convenience.

As shown in Figure 1, the utility model also is provided with a pair of short circuit earthing isolator of being made up of blade 40, rotating shaft 38, connecting lever 36, connecting rod 35, rotating shaft 38 is positioned at blade 40 centers, and be installed on the column, connecting lever 36 1 ends are enclosed within the rotating shaft 38, one end and connecting rod 35 pin joints, rotate to an angle by connecting rod 35, connecting lever 36 control blades 40, make blade two ends and circuit breaker 32 both sides short circuit earth points 21,39 closed or separate, realize circuit breaker both sides short circuit ground connection, exempt hard work and the unsafe factor of manually hanging, tear open ground wire.

As shown in figures 1 and 3, the utility model has designed one both can operate control to each closed and disconnected of organizing isolating switch, can make it locking mutually in operation sequence again, replace procedure lock and realize " five is anti-" function operations blocking mechanism, this mechanism is by short circuit earthing isolator rotating shaft 23, locking dish 52, connecting lever 25, main bus bar isolating switch and outlet isolating switch rotating shaft 28, locking dish 53, connecting lever 26,22, hospital bus bar isolating switch rotating shaft 24, locking dish 55, connecting lever 27 and cabinet door closed block (provide preceding Xiamen closed block among the figure, all the other do not draw): door deadlock lever 56, drive link 57, door lock handle 58 is formed, rotating shaft 23,28,24 are contained on the cabinet door 34 by shaft seat 33, connecting lever 25,22,26,27 and locking dish 52,53,55 are enclosed within the rotating shaft respectively, the connecting lever other end respectively with isolating switch connecting rod 35,14,37,20 pin joints, one to two circular arc locking mouth 54 is arranged on each locking dish, also has a square locking mouth 51 that matches with door deadlock lever 56 on the earthing isolator locking dish 52, the quantity of locking mouth and the position on dish thereof can be set as required, the locking dish contacts successively by circular arc locking mouth on it, operating personnel operate different rotating shafts outdoors at cabinet and rotate to an angle, can drive corresponding isolating switch connecting rod by the connecting lever in the rotating shaft, the closure and the disconnection of control isolating switch, simultaneously be in different relative positions by the locking mouth on the locking dish again, play locking effect, make the operation sequence of respectively organizing isolating switch meet " five is anti-" requirement different rotating shafts.

Figure 3 shows that cabinet door 34 closes, respectively organizes the equal off-state of isolating switch.If need open the cabinet door, must earlier rotating shaft 23 be rotated about 90 °, make the earthing isolator closure, this moment, door deadlock lever 56 ends entered the square locking mouth 51 of locking dish 52, so cabinet door 34 just can be opened.

As shown in Figure 4, the utility model also has the exhaust passage of being made up of dividing plate 60 and cabinet sidewall 59 61, and this passage is communicated with following isolation ward 63, and ejects mouth by cabinet, in order to the gas of timely discharge cabinet internal cause fault generation.Pass cabinet and exhaust passage place at bus 1 bus disrance sleeve 62 is housed, prevent that the cabinet fault from feeding through in other cabinet, avoid accident to enlarge and stretch.

The utility model volume is little, and compact conformation is easy to use, and is safe and reliable to operation, meets regulation and the requirement of IEC and GB3906.

Claims (6)

1. fixed ac high-voltage switch cubicle, form and comprise cabinet, cabinet door, main bus bar, hospital bus bar, support sleeve pipe, current transformer, circuit breaker, main bus bar isolating switch, outlet isolating switch, hospital bus bar isolating switch, it is characterized in that respectively organizing isolating switch is installed on the space framework successively, this framework is made up of column, support bar, cross bar, support bar is vertically fixed on the column, fixedly connected corresponding column of cross bar and corresponding support bar.

2. switch cubicle according to claim 1, it is characterized in that having preceding storehouse dividing plate, storehouse, back dividing plate, go up the storehouse dividing plate, with isolation ward three parts on isolation ward, preceding upward isolation ward, the back under the cabinet spatial separation one-tenth, before being positioned at, goes up the main bus bar isolating switch isolation ward, hospital bus bar isolating switch and outlet isolating switch are positioned at the back and go up isolation ward, circuit breaker is positioned at down isolation ward front portion, and current transformer is positioned at isolation ward rear portion down, and be provided with corresponding preceding Xiamen, Xiamen, back, preceding to the doorstep, the back to the doorstep.

3. switch cubicle according to claim 1 and 2, it is characterized in that having a pair of short circuit earthing isolator of forming by blade, rotating shaft, connecting lever, connecting rod, rotating shaft is positioned at blade center and is installed on the column, and blade rotates to an angle, and can or separate with circuit breaker both sides short circuit earth point closure.

4. switch cubicle according to claim 3, it is characterized in that having by the rotating shaft of short circuit earthing isolator, the locking dish, connecting lever, main bus bar isolating switch and the rotating shaft of outlet isolating switch, the locking dish, connecting lever, the rotating shaft of hospital bus bar isolating switch, the locking dish, connecting lever and cabinet door closed block: door deadlock lever, drive link, the operation locking mechanism that door lock handle is formed, rotating shaft is contained on the cabinet door by shaft seat, connecting lever and locking dish are enclosed within the rotating shaft respectively, the connecting lever other end respectively with each isolating switch connecting rod pin joint, one to two circular arc locking mouth is arranged on each locking dish, a square locking mouth that matches with the door deadlock lever is arranged on the earthing isolator locking dish, and the locking dish contacts successively by circular arc locking mouth.

5. according to claim 1 or 2 or 4 described switch cubicles, it is characterized in that having the exhaust passage of being made up of dividing plate and cabinet sidewall, this passage is communicated with following isolation ward, and ejects mouth by cabinet, passes cabinet and exhaust passage place at bus the bus disrance sleeve is housed.

6. switch cubicle according to claim 3 is characterized in that having the exhaust passage of being made up of dividing plate and cabinet sidewall, and this passage is communicated with following isolation ward, and ejects mouth by cabinet, passes cabinet and exhaust passage place at bus the bus disrance sleeve is housed.

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