CN2838016Y

CN2838016Y - Locking device against reverse misoperation of power transformation

Info

Publication number: CN2838016Y
Application number: CN 200520118063
Authority: CN
Inventors: 秦建新
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-24
Filing date: 2005-09-24
Publication date: 2006-11-15
Anticipated expiration: 2015-09-24

Abstract

The utility model relates to a locking device preventing the reverse misoperation of power transformation. A left lock is arranged on an operating handle of an isolating switch; two grooves which are matched with a lock tongue of the left lock is arranged on a basic frame of the isolating switch; a right lock is arranged on the operating handle of the isolating switch; left locks on the operating handles of every two isolating switches are identical; right locks on the operating handles of every two isolating switches are different; the basic frame of the isolating switch is provided with a groove which is matched with the lock tongue of the right lock; the locking device comprises a movable and a fixed lock rods, wherein the hanging and buckling end of the movable lock rod which is arranged on a rotating shaft of a tripping and engaging indicator is inserted into a positioning hole of the fixed lock rod; a key to the left lock is locked on the fixed lock rod; the locking device also comprises a main and an auxiliary mechanical locks which are arranged on an earthing member; the key to the main mechanical lock is fixedly connected to an electroscope; the auxiliary mechanical lock is identical with the right lock on the operating handle of the isolating switch, which is connected to earth by the earthing member and the main mechanical lock and the right lock share the key. The utility model can efficaciously prevent an accident of reverse misoperation from occurring, and can stop human body casualty. The utility model has the advantages of simple structure, less investment and easy production and use.

Description

Prevent the locking device of power transformation operation back brake misoperation

Technical field

The utility model relates to a kind of mechanical device that is used to prevent the misoperation of power transformation operation back brake, particularly prevents the locking device of power transformation operation back brake misoperation.

Background technology

Grid switching operation be meant electric equipment or electric power system by each state transformation to another each state, change a series of orderly operation of another kind of operational mode into by a kind of operational mode.Its basic order is such:--------electrical verification----installs earth connection to draw back the isolating switch of circuit breaker both sides 1, to draw back circuit breaker; 2,----isolating switch the closes----circuit breaker that closes of removing earth connection.Because operating procedure is many, dangerous big, in the grid switching operation of electric power system, recurrent misoperation has following several: 1, on-load draws, closes isolating switch; 2, mistakenly entering charged chamber; 3, circuit breaker is divided, closed by mistake to mistake; 4, charged hanging earthing conductor or splice grafting ground disconnecting link; 5, band ground connection disconnecting link or earth connection close isolating switch.In order to prevent misoperation, for a long time, people have carried out persevering endeavors, have developed the micro_computer five_proof locking device, and this device has intelligent degree height, the characteristics of flexible and convenient operation, and " five the is anti-" accident that can prevent takes place.Its weak point is big, the complex structure of cost height, investment, requires operating personnel to have higher level.And in anti-misoperation, also exist the dead point, and the situation that misinformation and operating barrier take place is arranged, thereby reduced the reliability and the usability of micro_computer five_proof locking device to a certain extent.

Summary of the invention

The purpose of this utility model is to provide a kind of locking device that prevents the misoperation of power transformation operation back brake, not only can prevent the generation of back brake misoperation fault effectively, stops loss of life or personal injury, and simple in structure, and small investment is easy to make, use.

The purpose of this utility model is achieved in that a kind of locking device that prevents the misoperation of power transformation operation back brake, comprise the left side lock that is installed in respectively on the isolator operation handle of circuit breaker both sides, being provided with two on the isolating switch pedestal is in and closes when the isolator operation handle, the groove that matches with left side lock dead bolt respectively when dividing two states, a right lock also is installed on the isolator operation handle, a groove that matches with right lock dead bolt when the isolator operation handle is in the branch state also is being set on the isolating switch pedestal, be positioned on the isolator operation handle of same circuit breaker both sides left phase-locked with, the right side on per two isolator operation handles lock is different; This locking device also comprises a key lock mechanism that is made of dynamic and static locking bar, wherein being installed in moving locking bar in the rotating shaft of circuit-breaker switching on-off indicating device has one and buckles end, the quiet locking bar that is installed on the circuit breaker pedestal has a location hole, the end that buckles of moving locking bar is inserted in the location hole on the quiet locking bar, and the key of left side lock hangs on the quiet locking bar between location hole and the circuit breaker pedestal; This locking device also is included in the major and minor mechanical lock of installing on the earthing member that is used to block its ground connection pin-and-hole, the key of main mechanical lock is fixed on the electroscope, secondary mechanical lock right phase-locked same with on the isolator operation handle of this earthing member ground connection, and this two shared key.

The utility model locking device is such locking in use:

1, when the isolating switch of circuit breaker and both sides thereof is closing, the buckling of moving locking bar that is installed in the rotating shaft of circuit-breaker switching on-off indicating device held in the location hole that is inserted on the quiet locking bar, and the key of left side lock hangs on the quiet locking bar between location hole and the circuit breaker pedestal, with the key lock of left side lock, can not arbitrarily be taken out.Left side lock just can not be opened, and at this moment, the dead bolt of left side lock just is stuck in the set groove of isolating switch pedestal, and operating handle can not be rotated.Have only the circuit breaker of working as at open position, dynamic and static locking bar disengages mutually, and the left lock key on the isolator operation handle of circuit breaker both sides just can take off, and Zuo Suocai can be opened.The dead bolt of left side lock could be extracted from the groove of isolating switch pedestal, and the isolating switch of circuit breaker both sides can draw back safely, thereby has prevented that on-load from drawing isolating switch.

2, the isolating switch when circuit breaker and both sides thereof is all drawn back to minute position, the dead bolt of isolating switch left side lock be entrapped in once more be provided with on the isolating switch pedestal, when the isolator operation handle is in the branch state in the corresponding groove, the isolator operation handle can not be rotated, the key of isolating switch left side lock just is pulled out to be put back on the quiet locking bar of original position, and isolating switch is locked in the branch position.If after this circuit breaker closed, the key of left side lock is just locked, can't take out, and the isolator operation handle can not release, thereby has prevented that on-load from closing isolating switch.

3, mistakenly entering charged chamber, anti-misoperation principle that can not on-load drawing isolating switch prevents that with above-mentioned the anti-misoperation principle of on-load drawing isolating switch is identical, its basic condition is can not carry out release because of the key difference of the left side lock of locking isolating switch or because of the key of left side lock is locked, and can not carry out the drawing isolating switch.

4, the lock of the right side on all isolator operation handles is different, after the release of right lock, key can not be extracted, and the right side of isolating switch lock is identical with the secondary mechanical lock that the earthing device of this switch reaches the earthing member on the relevant earthing device, when isolating switch is closing, right lock itself is in released state, the dead bolt of right lock does not stretch out, and key can not be transferred to, simultaneously, the movement travel that right dead bolt the stretches out pedestal of isolated pass again stops, causes right lock can not carry out locking, thereby right lock can not influence the isolator operation handle by closing the position to a minute position rotation.After the isolator operation handle goes to the branch position, the dead bolt of left and right lock just in time is stuck in the isolating switch pedestal in its two set grooves, isolating switch is locked in the branch position, at this moment, the key of right lock can be transferred to, the key of transfering to is used to open the secondary mechanical lock on the earthing member, so that install earth connection with phase-locked cooperation of main frame tool, this has just reached and has not drawn back the purpose that isolating switch just can not be installed earth connection.Because of the secondary mechanical lock difference of the earthing member on the earthing device of different isolating switches, can prevent mistakenly entering charged chamber installing earth connection again simultaneously.The main frame tool of the earthing member on the earthing device of same electric pressure equipment is phase-locked together, thereby, affixed a key just can be opened the main mechanical lock of all earthing members on the earthing device of same electric pressure equipment on the electroscope, the opening to match with secondary mechanical lock of main mechanical lock just can make the ground connection pin on the earth connection insert earthing member, can install earth connection, this just makes the installing earth connection must carry electroscope, like this, could open main mechanical lock on the earthing member with the key on the electroscope, thereby prevented from not to be with electroscope not carry out electrical verification, and the generation of directly installing the act of violating regulations of earth connection (or splice grafting ground disconnecting link), because usually the position of earthing member almost just and the electrical verification position in same place, branch is just arranged up and down, generally in 4 meters scopes, in the release, also lift a finger for electrical verification, thereby, generally speaking, there is not the behavior of only not carrying out electrical verification with the electroscope release, simultaneously, on electroscope, be carved with " for your safety, necessary electrical verification " printed words again, remind the necessary electrical verification of operator once more, make electrical verification and release close as a whole custom operating process.Thereby prevented charged hanging ground-wire from above-mentioned two aspects.

5, because the master who is used to block its ground connection pin-and-hole is installed on earthing member, secondary mechanical lock, thereby earthing member master, secondary mechanical lock must all be opened and could install earth connection, indispensable, master on earthing member, after secondary mechanical lock all is opened, the ground connection pin-and-hole of earthing member is unimpeded, the ground connection pin of earth connection is inserted, earth connection can be installed, at this moment, main, the dead bolt of secondary mechanical lock can not stretch out, and its movement travel is grounded pin and stops, the key of secondary mechanical lock just can not be transferred to, thereby can not be used to open the right side lock on the isolator operation handle, the operation that causes the band ground wire to close isolating switch can not be carried out, and has only after the ground connection pin is transferred to from earthing member, after promptly earth connection is removed, main, the locking of secondary mechanical lock ability, the key of secondary mechanical lock could be transferred to, and is used for opening the right side lock on the isolator operation handle, and isolating switch is closed, guarantee to send electricity safely, thereby avoided the band earth connection to send the generation of electrification.

In sum, adopt the utility model locking device can prevent several serious accidents that the power transformation operation grid switching operation is common effectively, guarantee the safety of operating personnel and equipment and electric power system, stop human casualty accident, and simple in structure, cost is very cheap, make and be very easy to, use also easily, operating personnel are not had extra specification requirement, easy operating.

The utility model with several concrete steps sequencing, the orderization of mechanical lock with grid switching operation, not only simple in structure, cheap for manufacturing cost, investment is few, and be highly susceptible to operation, operating personnel's operant level without any restriction, is highly suitable for and vastly uses for, power transformation business enterprise expand.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a general route connection status schematic diagram of the present utility model;

Fig. 2 is the deployed position schematic diagram of isolator operation handle, earthing member and left lock key etc.;

Fig. 3 is the mounting structure schematic diagram of isolator operation handle among Fig. 2;

Fig. 4 is the groove location schematic diagram on the isolating switch pedestal;

Fig. 5 is the latch-up structure schematic diagram of left lock key among Fig. 2;

Fig. 6 is the major and minor mechanical lock mounting structure schematic diagram on the earthing member among Fig. 2.

Embodiment

A kind of locking device that prevents the misoperation of power transformation operation back brake as shown in Figure 1, is installed with isolating switch 2 respectively in the both sides of circuit breaker 3, and earthing device 1 is installed respectively on the isolating switch 2.As Fig. 2, Fig. 3, shown in Figure 4, the utility model locking device comprises the left side lock 5 that is installed in respectively on the circuit breaker 3 both sides isolator operation handles 4, being provided with two on isolating switch pedestal 9 closes when isolator operation handle 4 is in, locks the groove that 5 dead bolts match with a left side respectively when dividing two states, a right lock 7 also is installed on isolator operation handle 4, be positioned at a left side on the same circuit breaker 3 both sides isolator operation handles 4 and lock 5 identically, 7 differences are locked on the right side on all isolator operation handles 4.As shown in Figure 3, Figure 4, a groove that matches with right lock 7 dead bolts also is being set on the isolating switch pedestal 9 when isolator operation handle 4 is in the branch state; As shown in Figure 5, this locking device also comprises a key lock mechanism that is made of dynamic and

static locking bar

11,12, wherein being installed in moving locking bar 11 in 10 rotating shafts of circuit-breaker switching on-off indicating device has one and buckles end, the quiet locking bar 12 that is installed on the circuit breaker pedestal 13 has a location hole, the end that buckles of moving locking bar 11 is inserted in the location hole on the quiet locking bar 12, and the key 6 of left side lock hangs on the quiet locking bar 12 between location hole and the circuit breaker pedestal 13; As Fig. 6, shown in Figure 3, shown in, this locking device also is included in the major and minor mechanical lock of installing on the earthing member 19 17,18 that is used to block its ground connection pin-and-hole, and the key of main mechanical lock 17 is fixed on the electroscope 16, does not promptly carry out electrical verification and just can not open main mechanical lock 17.Secondary mechanical lock 18 with lock with the right side on the isolator operation handle 4 of these earthing member 19 ground connection 7 identical, and this two shared key 8.Ground connection pin 15 is connecting conductive hook 14 by lead, and ground connection pin 15 matches with the ground connection pin-and-hole of earthing member 19.

If the both sides at isolating switch 2 all are equipped with earthing member, the right side lock 7 that then is installed on the isolator operation handle 4 should be two, and promptly two right side locks 7 are corresponding with the secondary mechanical lock 18 on the both sides earthing member 19 respectively.Accordingly, also should on isolating switch pedestal 9, be provided with one again in order to hold the groove of its dead bolt for this right side lock 7.Certainly, two earthing members 19 can also be made of one use side by side, and one or two secondary mechanical locks 18 can be installed on earthing member 19.

Claims

1, a kind of locking device that prevents the misoperation of power transformation operation back brake, comprise the left side lock (5) that is installed in respectively on circuit breaker (3) the both sides isolator operation handles (4), being provided with two on isolating switch pedestal (9) is in and closes when isolator operation handle (4), the groove that matches with left side lock (5) dead bolt respectively when dividing two states, it is characterized in that: a right lock (7) also is installed on isolator operation handle (4), a groove that matches with right lock (7) dead bolt when isolator operation handle (4) is in the branch state also is being set on the isolating switch pedestal (9), the left side lock (5) that is positioned on same circuit breaker (3) the both sides isolator operation handles (4) is identical, right side lock (7) difference on per two isolator operation handles (4); This locking device also comprises a key lock mechanism that is made of dynamic and static locking bar (11,12), wherein being installed in moving locking bar (11) in circuit-breaker switching on-off indicating device (10) rotating shaft has one and buckles end, the quiet locking bar (12) that is installed on the circuit breaker pedestal (13) has a location hole, the end that buckles of moving locking bar (11) is inserted in the location hole on the quiet locking bar (12), and the key (6) of left side lock hangs on the quiet locking bar (12) between location hole and the circuit breaker pedestal (13); This locking device also is included in earthing member (19) and goes up the major and minor mechanical lock of installing that is used to block its ground connection pin-and-hole (17,18), the key of main mechanical lock (17) is fixed on the electroscope (16), secondary mechanical lock (18) is with identical with the lock of the right side on the isolator operation handle (4) of this earthing member (19) ground connection (7), and this two shared key (8).

2, the locking device that prevents the misoperation of power transformation operation back brake according to claim 1 is characterized in that: the right side lock (7) that is installed on the isolator operation handle (4) is two.