CN201298508Y

CN201298508Y - Breaker control circuit

Info

Publication number: CN201298508Y
Application number: CNU2008201550013U
Authority: CN
Inventors: 谢俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-04
Filing date: 2008-11-04
Publication date: 2009-08-26
Anticipated expiration: 2018-11-04

Abstract

The utility model discloses a breaker control circuit, which comprises a plurality of breaker control circuit units; each breaker control circuit unit comprises two breakers, that is, a normally opened breaker and a normally closed breaker; and the breakers are respectively connected in serial with an indicating light; two indicating lights are labeled as a first indicating light and a second indicating light; a fixed contact of the normally closed breaker is connected with a high-voltage negative electrode, and a moving contact thereof is connected with a high-voltage positive electrode; and a fixed contact of the normally opened breaker is connected with the high-voltage positive electrode, and a moving contact thereof is connected with the high-voltage negative electrode. The breaker control circuit unit further comprises a low-voltage and multifunction switch; and a low voltage positive electrode can be selected to be connected to the first indicating light or the second indicating light through the multifunction switch. The key point of the utility model is that the low-voltage positive electrode is connected in serial with a non-return element. By additionally arranging a non-return diode, the utility model can effectively prevent interaction of a plurality of breakers when in use at the same time and avoiding the condition of error indication of the indicating lights.

Description

A kind of breaker control circuit

Technical field

The utility model relates to a kind of breaker control circuit, relates in particular to the breaker control circuit that a kind of many circuit breakers are worked simultaneously.

Background technology

At present, in the application of breaker control circuit, before circuit breaker, be connected in series a flashing light usually, be used to indicate and monitor the abnormal conditions of circuit breaker, yet, when the circuit breaker more than two or two is worked simultaneously, can generation interact, thereby bring the disadvantage of mistake indication.As following Example:

Two breaker control circuits: 1DL control loop, 2DL control loop, its circuit diagram be referring to Fig. 1, and Fig. 2 makes that 1DL is the position, back of closing a floodgate, and the contact 9～10 of its control switch 1KK is in on-state; 2DL is the spare space, and the contact 14～15 of its control switch 2KK is in on-position.Following two kinds of mistakes then can occur and indicate phenomenon:

(1) 1DL emergency stop valve trip, its green light 1LD flash of light, this is a normal condition.But this moment, flash of light also appearred in the red light 2HD of 2DL, was the mistake indication, and giving people's prompting is that 2DL hauls oneself willingly into.The reason that this situation occurs as shown in Figure 3, after the 1DL tripping operation, by its loop-KM → 1HC (HQ) → 1DL → 1LD → 1KK10-9 →+SM starts flasher, the 1ZJ action, at this moment, the 1LD lamp is dark, at this simultaneously, by+SM → 2KK15-14 → 2HD → 2HWJ → 2RD1 →+KM connects 2HD, it is bright to make it lamp, flashing light device 2ZJ action then, short circuit 1ZJ and 2HD make 1LD by secretly brightening, 2HD is gone out by bright change, after 2ZJ time-delay was then returned, the 1LD lamp was dark, and the 2HD lamp is bright.1LD and 2HD phosphere has simultaneously so just appearred.

(2) after 2DL hauls oneself willingly into because of certain reason, when normal flash of light appearred in 2HD, the undesired phosphere of 1LD also can appear, and the indication of giving the people is the 1DL tripping operation, and referring to Fig. 4, reason is the same.

In fact, the design of above-mentioned breaker control circuit is no matter under what operating mode, as long as a breaker control circuit glistens, other each breaker control circuit all will be followed flash of light, have a strong impact on monitoring and judgement to this circuit, exist great potential safety hazard, must eradicate.

The utility model content

The utility model provides a kind of breaker control circuit that can correctly indicate working state of circuit breaker all the time at deficiency of the prior art.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of breaker control circuit, form by a plurality of breaker control circuits unit, each breaker control circuit unit comprises two circuit breakers, often open circuit breaker for one, a normally closed circuit breaker, the indicator light of connecting respectively, be denoted as first indicator light, second indicator light, the fixed contact of normally closed circuit breaker connects the high voltage negative pole, moving contact connects high-voltage anode, and the fixed contact of often opening circuit breaker connects the high-voltage anode utmost point, and moving contact connects the high voltage negative pole, described breaker control circuit unit also comprises a low-voltage and multi-direction switch, can select low-voltage is connected to first indicator light or second indicator light by multi-direction switch, its main points are non-return element of described low-voltage series connection.

In the technique scheme, described non-return element is a voltage stabilizing didoe.

In the technique scheme, described high-voltage anode, the high voltage negative pole protective tube of connecting respectively.

In the technique scheme, first indicator light is a green LED, and second indicator light is a red light emitting diodes.

Beneficial effect: the utility model compared with prior art has following beneficial effect:

(1) the utility model is by increasing a non-return diode, can effectively prevent to occur easily when a plurality of circuit breakers from using simultaneously interactive disadvantage, avoided the situation of indicator light mistake indication, effectively guaranteed the correct monitoring of circuit breaker and the manipulation of making thus, the safe operation of circuit has been had great significance.

(2) the utility model has only increased non-return diode on original structure, just can stop the disadvantage that original structure exists, and structure is all relative with technology simple, and cost performance is good.

Figure of description

Fig. 1 is the circuit theory diagrams of prior art breaker control circuit unit 1.

Fig. 2 is the circuit theory diagrams of prior art breaker control circuit unit 1.

The circuit theory diagrams of mistake indication appear hauling oneself willingly in Fig. 3 for prior art.

The circuit theory diagrams of tripping operation mistake indication appear in Fig. 4 for prior art.

Fig. 5 is the circuit theory diagrams of the utility model breaker control circuit unit 1.

Fig. 6 is the circuit theory diagrams of the utility model breaker control circuit unit 2.

Fig. 7 is the circuit theory diagrams of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

Referring to accompanying drawing, a kind of breaker control circuit is made up of a plurality of breaker control circuits unit, in the present embodiment, selects two breaker control circuit unit for use, and the breaker control circuit unit is two when above, its principle and present embodiment with.

Each breaker control circuit unit comprises two circuit breaker DL, often open circuit breaker for one, a normally closed circuit breaker, the indicator light of connecting respectively, be denoted as first indicator light, second indicator light, as preferably, first indicator light is green LED LD, and second indicator light is red light emitting diodes HD, when circuit breaker DL takes place unusual, the light-emitting diode two ends produce voltage difference, or voltage difference changes, and light-emitting diode just can be luminous, and change bright-dark degree along with the variation of voltage difference, can intuitively and effectively indicate the working condition of circuit breaker DL, and the diode cost is lower, uses the indicator light of different colours, be convenient to distinguish the circuit breaker DL that judges that appearance is unusual, be difficult for makeing mistakes.

The fixed contact of normally closed circuit breaker DL connects high voltage negative pole-KM, moving contact connects high-voltage anode+KM, the fixed contact of often opening circuit breaker DL connects high-voltage anode+KM, moving contact connects high voltage negative pole-KM, described breaker control circuit unit also comprises a low-voltage+SM and multi-direction switch KK, can select low-voltage+SM is connected to green light LD or red light HD by multi-direction switch KK, its main points are, described low-voltage+SM non-return element of connecting.

As preferably, a described inverse element spare is voltage stabilizing didoe D, utilizes its forward conduction, and the characteristic of oppositely ending can effectively be avoided because of voltage changes influence the luminous of diode taking place in the circuit, avoids mistake to indicate.

As preferably, described high-voltage anode+KM, the high voltage negative pole-KM protective tube RD1 that connects respectively, RD2 burns out power supply when preventing short circuit, can guarantee the safety of circuit operation.

Introduce its operation principle below:

In the present embodiment, adopted two breaker control circuit unit matching to use, be respectively breaker control circuit unit 1, breaker control circuit unit 2, its circuit theory diagrams are referring to Fig. 5, Fig. 6, green light LD is received with low-voltage+SM in unit 1, and 1DL is a "on" position, red light 2HD is received with low-voltage+SM in unit 2, and 2DL is a stand-by state.The schematic diagram of two unit matching uses is referring to Fig. 7.

When emergency stop valve trip appears in 1DL, this moment the 1ZJ closure, 2ZJ disconnects, + SM=+KM, its loop-KM → 1HC (HQ) → 1DL → 1LD → 1KK10-9 →+SM starts flasher, and green light 1LD both end voltage difference is+2KM, green light 1LD is bright, then, and the 1ZJ action, at this moment, 1ZJ, 2ZJ all disconnects, and green light 1LD both end voltage difference is+SM+KM, 1LD is by bright deepening, at this simultaneously, loop+SM → D2 → KK15-14 → 2HD → 2HWJ → 2RD1 →+KM in because+SM＜+KM, non-return diode 2D ends, red light 2HD does not work, flashing light device 2ZJ action then, short circuit 1ZJ and 2HD, + SM=+KM, green light 1LD is by secretly brightening, and 2ZJ time-delay is then returned, and green light 1LD is dark, non-return diode 2D ends, and red light 2HD does not work.

Because 1ZJ and 2ZJ no matter conducting whether, all smaller or equal to+KM, non-return diode 2D is always cut-off state to+SM, has avoided red light 2HD flash of light, thereby produces the situation of mistake indication.

When the 2DL accident is hauled oneself willingly into, red light 2HD flash of light, non-return diode 1D ends, and green light 1LD does not work all the time, and its principle is the same.

More than be the description of the utility model preferred embodiment, yet the utility model is not limited to embodiment as described herein, under the situation that does not break away from the utility model scope, also comprises various changes and the variation done.

Claims

1, a kind of breaker control circuit, form by a plurality of breaker control circuits unit, each breaker control circuit unit comprises two circuit breaker DL, often open circuit breaker for one, a normally closed circuit breaker, the indicator light of connecting respectively, be denoted as first indicator light, second indicator light, the fixed contact of normally closed circuit breaker DL connects high voltage negative pole-KM, moving contact connects high-voltage anode+KM, and the fixed contact of often opening circuit breaker DL connects high-voltage anode+KM, and moving contact connects high voltage negative pole-KM, described breaker control circuit unit also comprises a low-voltage+SM and multi-direction switch KK, can select low-voltage+SM is connected to first indicator light or second indicator light by multi-direction switch KK, its main points are, described low-voltage+SM non-return element of connecting.

2, breaker control circuit according to claim 1 is characterized in that, described non-return element is voltage stabilizing didoe D.

3, breaker control circuit according to claim 1 is characterized in that, described high-voltage anode+KM, the high voltage negative pole-KM protective tube RD1 that connects respectively, RD2.

4, breaker control circuit according to claim 1 is characterized in that, described first indicator light is green LED LD, and second indicator light is red light emitting diodes HD.