RU2278043C2 - Switch position control device (versions) - Google Patents

Abstract

FIELD: railway transport; switches.

SUBSTANCE: invention can be used in signaling, interlocking and blocking equipment of railway transport. Proposed device has line conductors, electric drive 15 containing automatic change-over switch with operating contacts 15.2 and check contacts 15.1, reversing relay 14, polarized starting relay 3 and neutral starting relay 4, switch control single-pole relays, switch position control relay, transformers, diodes, capacitors, resistors, dc and ac supply sources. Leads of working windings of one and other single-pole switch control relays, respectively, 5.1 and 6.1, are connected through contacts of neutral starting relay to line conductors. Polarizing windings of both single-pole switch control relays are connected in parallel to relay supply source. Making contact of plus relay is connected in series with winding of switch position plus control relay and making contacts of one and other single-pole switch position control relay. Making contact of minus relay is connected in series with switch position minus control relay and making contacts of one and their single-pole switch position control relay.

EFFECT: improved reliability owing to prevention of false checking of switch position in case of confusing of line conducts and action of spark on commutator of motor of electric drive.

4 cl, 3 dwg

Description

The invention relates to the field of electrical engineering and can be used in signaling, centralization and blocking devices (SSC) in railway transport.

A device for controlling the position of the arrow, containing linear wires, an electric drive containing a switch with working and control contacts, a reversing relay, polarized and neutral starting relays, relay control arrows, relay control the position of the arrow, transformer, diodes, capacitors, resistors, DC power sources and alternating currents [1].

The disadvantages of this device is the low reliability due to the following:

- when reversing the linear wires, it is possible to obtain a false control of the position of the arrow;

- if the contact in the connection points of the plus and minus arrow control relay windings or interconnected leads from the middle turns of the polarizing windings of the arrow control relay to the negative pole of the relay power source is broken, these relays may malfunction due to the energization of their windings disconnected by open contact 5 through windings connected in parallel to this contact.

There is also known a device for monitoring the position of the arrow, containing linear wires, an electric drive containing a circuit breaker with working and control contacts, a reversing relay, polarized and neutral starting relays, relay control arrows, relay control the position of the arrow, transformer, diodes, capacitors, resistors, power supplies direct and alternating currents [2, p. 46-59, Fig. 21, 22].

This device is adopted as a prototype as closer to those proposed in its technical essence.

The disadvantages of the opposed device is the low reliability due to the following:

- the possibility of obtaining false control of the position of the arrow when reversing the linear wires;

- the possibility of obtaining false control of the position of the arrow under the influence of a spark on the collector of the electric motor of the electric drive.

The problem to which the present invention is directed is to eliminate the listed disadvantages of the known devices for controlling the position of the arrow.

The solution to this problem in one embodiment is achieved by the fact that in it one conclusions of the working windings of one and the other unipolar relay control arrows are connected to each other and to one terminal of the secondary winding of the transformer, and this point of their connection through the NC contact of the neutral start relay is connected to the 1st a linear wire, and the other output of the working winding of one unipolar relay control arrows through one capacitor is connected to the other output of the secondary winding of the transformer and through the neutral contact of the relay, this output of the working winding is connected to the 2nd line wire, while the other output of the working winding of another relay control arrows through another capacitor is connected to the other output of the secondary winding of the transformer, and this output of the working winding through the NC contact of the neutral start relay is connected to 3- linear wire, and the 2nd and 3rd linear wires are connected respectively to one and the other ends of two resistors connected in series, and the connection point of these resistors to each other through normally closed the control switch contact is connected to one pole of the diode, which is connected through the normally open control contact of the switch to the 1st line wire, and through the normally open control contact of the switch this connection point of the resistors is connected to the other pole of the diode, which is connected through the normally closed control contact of the switch 1st linear wire, and the polarizing windings of both unipolar monitoring relays arrows are connected in parallel and connected to the source relay power supply, while one of their connection points is connected to one pole of the relay power source through the make contact of the positive relay and through the make contact of the negative relay to the other pole of the relay power supply, and the other point of their connection is connected to the other pole of the relay power supply through the make contact positive relay and through the NO contact of the negative relay to one pole of the relay power source, and in series with the coil of the relay for monitoring the positive position of the arrow and the NO contacts of one or the other a unipolar relay control arrows included the plus make contact relay and relay coil in series with the control minus the hand position and make contact one another and the unipolar control relay arrows included minus make contact relay.

In another embodiment, the solution to this problem is achieved by the fact that each unipolar relay control switches are made with two polarizing windings, in parallel with which capacitors are connected, while one and the other ends of one and the other of these polarizing windings of one unipolar relay control arrows are connected to the same ends of the polarizing windings of the other unipolar control relay arrows and one ends of the same polarizing windings are connected to one pole of the DC power source through a normally closed contact a polarized starting relay, in parallel to which a normally open contact of this relay is connected, connected to other ends of other polarizing windings, while the other ends of one polarizing windings are connected to the other pole of the DC power source through the NC contact of one of the two unipolar relay control switches, in parallel to which is connected make contact of this relay, connected via series-connected make contact of another unipolar control relay arrows and windings monitoring relays minus the hand position to the other pole of the DC power source.

In the proposed devices, the possibility of obtaining false control of the position of the arrow when entangling linear wires is excluded. in this case, the working winding of one of the two unipolar arrow control relays will receive reverse polarity power, which will release the anchor and with its contacts will open the control relay power circuits for both the positive and negative positions of the arrow.

In the proposed devices, the operation of a unipolar relay control of the arrow from the spark is excluded in case of contact failure in the electric motor collector, since voltage from the transformer supplying the control circuit does not reach the electric motor of the electric drive.

The proposed technical solutions are new, because devices for monitoring the position of the arrow are not known from the prior art, in which one conclusions of the working windings of one and the other unipolar relay control arrows are connected to each other and to one terminal of the secondary winding of the transformer, and this point of their connection through the NC contact of the neutral start relay is connected to 1- a linear wire, and the other output of the working winding of one unipolar relay control arrows through one capacitor is connected to the other output of the secondary winding of the transformer and through the opening contact the neutral start relay, this output of the working winding is connected to the 2nd line wire, while the other output of the working winding of the other unipolar relay control arrows through another capacitor is connected to the other output of the secondary winding of the transformer, and this output of the working winding through the NC contact of the neutral start relay is connected to The 3rd line wire, and the 2nd and 3rd line wires are connected respectively to one and the other ends of the two resistors connected in series, and the connection point of these resistors is through a normally closed control contact of the switch is connected to one pole of the diode, which is connected through a normally open control contact of the switch to the 1st line wire, and through a normally open control contact of the switch, this connection point of the resistors is connected to the other pole of the diode, which is connected through the normally closed the control switch contact is connected to the 1st line wire, and the polarizing windings of both control relays arrows are connected in parallel and connected to the relay power source, while one of their connection points is connected to one pole of the relay power source through the make contact of the positive relay and through the make contact of the negative relay to the other pole of the relay power source, and the other point of their connection is connected to the other pole of the relay power source through the make contact of the positive relay and through the make contact of the negative relay to one pole of the relay power supply, and in series with the coil of the relay for monitoring the positive position of the arrow and make contact ktami one unipolar and the other relay control arrows included positive battery relay closing contact and in series with the relay control winding minus the hand position and the normally open contacts of one and the other of the unipolar switch control arrows included minus make contact relay. Also, devices are not known in which each unipolar switch control relay is made with two polarizing windings, in parallel with which capacitors are connected, while one and the other ends of one and the other of these polarizing windings of one unipolar control relay arrows are connected to the same ends of polarizing windings of another unipolar control relay arrows and one ends of the same polarizing windings are connected to one pole of the DC power source through a normally closed contact of the starting polarization a relay, in parallel with which a normally open contact of this relay is connected, connected to the other ends of other polarizing windings, while the other ends of some polarizing windings are connected to the other pole of the DC power source through the opening contact of one of the two unipolar relay control switches, parallel to which the closing contact of this relay connected via series-connected make contact of another unipolar monitoring relay arrows and winding of monitoring relay min cial hand position to the other pole of the DC source.

The proposed technical solutions have an inventive step, because for a specialist, they do not explicitly follow from the prior art, which is confirmed by the above comparative analysis of known and proposed devices.

The proposed technical solutions are industrially applicable, because when they are used, a technical result is obtained in the form of an increase in reliability when reversing the linear wires, as well as the formation of a spark when contact is disturbed in the collector of the electric motor of the electric drive.

From the foregoing, it follows that the proposed technical solutions meet the requirements of the invention.

An example of an embodiment of the proposed device for monitoring the position of the arrow when used in a device for controlling a turnout electric drive of a direct current is shown in Fig. 1, in which contact repeaters of a trigger of a polarized relay (plus and minus relays) are used to control the power of polarizing windings of unipolar arrow control relays and FIG. 2 shows an example of a variant of this device in which unipolar relay control switches are used, in each of which two polarizing windings are installed and that switching contact directly polarized starter relay.

Figure 3 shows a variant of the proposed device for monitoring the position of the arrow in the device for controlling the switch electric drive with two linear wires for the case when at least one linear wire is made with duplicated wires, which allows one of the duplicate wires to be selected as an independent one for the period of monitoring the position of the arrow a linear wire to ensure the operation of the device for controlling the position of the arrow, and for the period of transfer of the arrow, reconnect it to the linear wire from which it was disconnected.

The scheme of the proposed device for controlling a single-turn arrow electric drive (see Figure 1) contains control contacts 1 and 2, double-wound starting polarized 3 and neutral 4 relays with their contacts, respectively 3.1, 3.2, 3.3, 3.4 and 4.1, 4.2, 4.3, 4.4 unipolar relay control switches arrow 5 with working 5.1 and polarizing 5.2 windings and its contact 5.3 and 6 with working 6.1 and polarizing 6.2 windings and its contact 6.3, relay for controlling the positive position of arrow 7, relay for controlling the negative position of arrow 8, contacts of track switch 9 and trailing 10 relay (these relays are not shown in the diagram), transformer 11 with secondary 11.1 winding, positive relay 12 and its contacts 12.1, 12.2, 12.3, negative relay 13 and its contacts 13.1, 13.2, 13.3, polarized reversing relay 14 and its contact 14.1, electric drive 15 with control 15.1, working 15.2 contacts of the automatic switch and motor windings 15.3, 15.4, line wires 16, 17, 18, diodes 19, 20, capacitors 21, 22, 23, resistors 24, 25, 26, 27, 28, power supply relay "+", "-", a direct current source 29 for powering the electric motor of the electric drive and an AC power source 30.

The device of FIG. 2 instead of the positive 12 and negative 13 relays and their contacts indicated in FIG. 1 contains additional capacitors 31, 32 and additional resistors 33 and 34, relay 5 contains additional polarizing winding 5.2.2 and contact 5.4, relay 6 contains additional polarizing winding 6.2.2 and contact 6.4.

The device of Fig. 3 further comprises, in addition to that indicated in Figs. 1 and 2, a switching contact of the reversing relay 14.2 and one normally open and one normally closed starting contacts of the automatic switch 15.2.

The device of Fig. 1 is shown in the state of monitoring the positive position of the arrow, and the polarity of the voltage coming from the linear wires 16, 17, 18 through the disconnecting contacts 4.2, 4.3, 4.4 under the influence of the diode 20 on the windings 5.1, 6.1, coincides with the polarity of the voltage supplied through contacts 12.1, 12.2 to windings 5.2, 6.2 from the relay power supply, which is why relays 5 and 6 are activated and these relays with contacts 5.3, 6.3 provide the excited state of relay 7 through contact 12.3, thereby fixing the positive position of the arrow.

To move the arrow from the positive to the negative position, pin 2 closes, which makes relay 4 energize by circuit: +, make contact 1, make contact 2, make contact 3.1, diode 19, coil 4, make contacts 9, 10, and make contacts 4.2, 4.3, 4.4 will disconnect the power of the windings 5.1, 6.1 from the linear wires 16, 17, 18, and with the make contacts 4.2, 4.3 will prepare the power circuit of the relay 14 and the electric motor of the electric drive 15.3. Relays 5 and 6 will release the anchors and with the make contacts 5.3, 6.3 turn off the power of relay 7.

The make contact 4.1 will create a relay 3: + actuation circuit, make contact 1, make contact 2, make contact 4.1, make contacts 9, 10. Relay 3 will switch its contacts and turn 3.1 to disconnect relay 4 excitation circuit, use 3.2 to connect power 29 a reversed polarity to the linear wires 16, 18, which causes the relay 14 to trip and pin 14.1 connects the winding 15.3 of the electric motor of the electric drive 15 to the linear wires 16, 18, and by pin 3.4 it turns off the power of relay 12 and turns on the power of relay 13, which makes contacts 13.1, 13.2 reverse polarity n windings 5.2, 6.2 from the relay power supply, and contact 12.3 will additionally break the power supply circuit of relay 7, and contact 13.3 will prepare the excitation circuit of relay 8. Electric motor 15.3 will move the arrow to the negative position. The current of the electric motor flowing through the coil of relay 4 will ensure that the armature of relay 4 is held for the period of the arrow switch.

After the translation of the arrow is completed, contact 15.2 will turn off the power to the motor winding 15.3, and contacts 15.1 will change the polarity of the diode 20 to the linear wires 16, 17, 18. Relay 4 will release the armature and disconnect contacts 4.2, 4.3, 4.4 will be connected to the linear wires 16, 17, 18 windings 5.1, 6.1.

Because the changed polarity of connecting the diode 20 to the linear wires 16, 17, 18 corresponds to the polarity of the power supply connecting to the windings 5.2, 6.2, changed by pin 13.1, 13.2, then the relays 5 and 6 are excited and by the making contacts 5.3, 6.3 they will create the excitation circuit of relay 8, which makes relay 8 along the circuit: +, make contacts 5.3, 6.3, 13.3, relay 8, -. This fixes the negative position of the arrow.

Capacitors: 23 provides the deceleration of relay 4 during the rise time of the current in the motor, and 21, 22 - eliminate the closure of the DC component of the current through the transformer winding 11.1.

Resistors: 24 - eliminates the inrush current in the capacitor 23, and 26, 27 and 25 - set the relay operation mode 5, 6 and 14, respectively, and 28 - protects the transformer 11 in the event of a short circuit of the capacitors 21 or 22 and the linear wires 16, 17 or 17, 18.

The translation of the paired arrows is carried out similarly to the described translation for the single arrow of Figure 1 with the difference that the diode 20 is connected through the series-connected control contacts of both paired arrows.

When the line wires 16 and 17 are mixed up, the position of the arrow is lost, as the polarity of the incoming DC voltage on the winding 5.1 does not coincide with the polarity of the voltage supplied through terminal 12.1, 12.2 to the winding 5.2, which is why contact 5.3 will disconnect the power supply circuit of relay 7 and 8. In the event of a short circuit of this contact 2 and switching from this contact 3.4 and relay operation 13 relay 5 will work, however, relay 6 will release the anchor, because the polarity of the incoming DC voltage on the winding 6.1 does not coincide with the polarity of the voltage coming through the contacts 13.1, 13.2 to the winding 6.2, and the contact 6.3 will cut off the power supply circuit of relay 7 and 8, i.e. in both cases, it is impossible to obtain control of the position of the arrow, which indicates a mixed-up of linear wires.

Similarly, the device works when entangling the linear wires 17 and 18.

If the line wires 16 and 18 are mixed up, a control corresponding to the actual position of the arrow will be obtained. However, moving the arrow to another position will be impossible, because the relay 14 does not receive a voltage of the corresponding polarity, which indicates an entanglement of the linear wires.

Thus, in the proposed device for controlling the position of the arrow, protection is provided from false control of the position of the arrow when the line wires are mixed up.

When translating the arrow with a plug, control of the arrow position can be obtained similarly after closing contact 1 or 2, corresponding to the actual position of the arrow. The protection against entanglement of the linear wires is achieved in the same way as the protection described for FIG. 1.

The device of FIG. 2 works similarly to that described for FIG. 1, with the difference that, in the normal position, the arrows through the normally closed contact 3.4 receive power to the windings 5.2.1, 6.2.1 through the circuit: +, normally closed contact 3.4, parallel windings 5.2. 1, 6.2.1, capacitor 31, make contacts 5.3, 6.3, relay coil 7, -, which makes relays 5, 6, 7 excited. Excited relay 7 fixes the positive position of the arrow.

After switching the contact 3.4 and moving the arrow to the negative position, as described above for Figure 1, the windings 5.2.2 and 6.2.2 will be powered by the circuit: +, switched contact 3.4, parallel windings 5.2.2, 6.2.2, capacitor 32, opening contact 5.4, resistor 34, -, which makes relays 5, 6 trip and self-locking via closing contacts 5.4 and 6.4, and relay 8 will receive power via the circuit: +, switched contact 3.4, windings 5.2.2, 6.2.2 connected in parallel , capacitor 32, NO contacts 5.4, 6.4, relay coil 8, -.

Relay 8 will trip, which fixes the minus position of the arrow. Capacitors 31, 32 ensure the operation of relays 5, 6 through their NC contacts 5.3, 5.4 and self-locking of these relays through NC contacts 5.3, 6.3, 5.4, 6.4.

Resistors 33, 34 eliminate inrush current when capacitors 31, 32 are turned on.

The device of Fig. 3 works similarly to that described for Figs. 1 and 2, with the difference that, after the relay 4 is activated, the make contact 4.4 and the reversing relay with the switched contact 14.2 and the normally closed contact 15.2 of the auto switch connected in series with it, connect a linear wire 18 parallel to a linear wire 17 and These combined line wires and line wire 16 will receive power to the electric motor 15.3, and after the end of the switch, the make contact 4.4 will disconnect the line wires 17 and 18, and the make contact 4.4 reconnects the line wire 17 to the winding 6.1, and the switched contact 14.2 disconnects the line wires 17 and 18.

In the device for controlling an alternating current electric switch gear with a reversing relay and three line wires, the proposed device for controlling the position of the arrow works similarly to that described for Figs. 1 and 2, with the difference that relays 4 and 14 are applied in this device, connected according to known schemes for these devices, and the 1st and 2nd phases of a three-phase AC power source are connected to linear wires 16, 18 through contacts 3.2, 3.3, 4.2, 4.3, to which the 1st and 2nd phases of an electric motor are connected through contacts 14.1, 14.2, 15.2 alternating current, and Its 3rd phase is connected to a linear wire 17, which is connected via a NO contact 4.4 not to a linear wire 18, but to the 3rd phase of an AC power source.

In the proposed device of Fig. 1, unipolar arrow monitoring relays with polarizing windings having leads from the middle turn can be used. In this case, it is possible to reduce the number of positive and negative relays for monitoring the position of the arrow occupied by the contacts of the device due to the unipolar switching of these windings.

In the power supply circuit of the windings 5.2, 6.2, 7, and 8, the NC contacts of the relay 13 can be connected in series with the NO contacts of the relay 13, and the NC contacts of the relay 12 can be connected in series with the NO contacts of the relay 13.

The economic effect of the proposed device for controlling a turnout electric drive can be characterized by the following indicators:

- a decrease in material losses from train wrecks due to false control of the position of the arrow when reversing the linear wires;

- reduction of material losses from train crashes due to false control of the position of the arrow from the effects of a spark on the collector of the electric motor of the electric drive;

- the possibility of introducing the proposed device in large quantities in the existing two-wire control devices of a turnout electric drive of direct current at minimum cost, because for this, it is not necessary to make changes to the cable network (if there are duplicate wires in the cable for the remote shooters), and at the centralization station, all existing equipment is saved and only the switch control unit with a plug connection is replaced,

- the possibility of using the proposed device both in the control devices of the switch electric drive of direct and alternating current.

Literature

1. USSR copyright certificate No. 1294680 A1, cl. In 61 L 7/08, published March 7, 2017, Bull. No. 9;

2. A.F. Petrov, L.P. Tseiko, I.M.Ivensky. Schemes of electrical centralization of intermediate stations. M .: Transport, 1987.

Claims (6)

1. Device for monitoring the position of the arrow, containing linear wires, an electric drive, containing a circuit breaker with working and control contacts, a reversing relay, polarized and neutral starting relays, a unipolar relay for controlling the arrow, relay for monitoring the position of the arrow, transformers, diodes, capacitors, resistors, sources DC and AC power supply, characterized in that the device is additionally equipped with another unipolar relay control arrows, while one of the conclusions of the working windings of one and the other arrows of the unipolar monitoring relay are connected to each other and to one terminal of the secondary winding of the transformer, and this point of their connection through the NC contact of the neutral starting relay is connected to the 1st line wire, and the other output of the working winding of one unipolar relay of the arrow monitoring through one capacitor is connected to another terminal of the secondary winding of the transformer and through the NC contact of the neutral start relay, this output of the working winding is connected to the 2nd line wire, while the other output of the working rpm The current of another unipolar relay control arrows through another capacitor is connected to another terminal of the secondary winding of the transformer and this output of the working winding through the NC contact of the neutral start relay is connected to the 3rd line wire, and the 2nd and 3rd line wires are connected respectively to one and to the other ends of two resistors connected in series, and the connection point of these resistors to each other through a normally closed control contact of the auto switch is connected to one pole of the diode, which through the almost open control contact of the switch is connected to the 1st line wire, and through the normally open control contact of the switch this connection point of the resistors is connected to the other pole of the diode, which is connected through the normally closed control contact of the switch to the 1st line wire, and the polarizing windings of both unipolar control relays arrows are connected in parallel and connected to the relay power source, while one of their connection points is connected to one pole of the source the relay is energized through the make contact of the positive relay and through the make contact of the negative relay to the other pole of the relay power supply, and the other point of their connection is connected to the other pole of the power supply of the relay through the make contact of the positive relay and through the make contact of the negative relay to one pole of the relay power supply, and in series with the winding of the relay for monitoring the positive position of the arrow and the closing contacts of one and the other unipolar relay for monitoring the position of the arrow, the closing contact of the positive e and in series with the relay control winding minus the hand position and the normally open contacts of one and the other arrow unipolar control relay normally open contact is included minus relay. 2. The device according to claim 1, characterized in that the 2nd line wire is connected to the 1st line wire through the make contact of the neutral start relay, in parallel with which are connected the normally closed contact of the reversing relay and the normally open working contact of the switch and connected in series normally open contact of the reversing relay and normally closed working contact of the circuit breaker. 3. Device for monitoring the position of the arrow, containing linear wires, an electric drive, containing a circuit breaker with working and control contacts, a reversing relay, polarized and neutral starting relays, a unipolar relay for controlling the arrow, relay for monitoring the position of the arrow, transformers, diodes, capacitors, resistors, sources DC and AC power supply, characterized in that the device is additionally equipped with another unipolar relay control arrows, with each unipolar relay control arrows made with two polarizing windings, in parallel with which capacitors are connected, while one and the other ends of one and the other of these polarizing windings of one unipolar relay control arrows are connected to the same ends of polarizing windings of another unipolar relay control arrows and one ends of one polarizing windings are connected to one pole of the source DC power supply through a normally closed contact of a starting polarized relay, in parallel with which a normally open contact is connected about a relay connected to other ends of other polarizing windings, while the other ends of some polarizing windings are connected to the other pole of the DC power source through the NC contact of one of the two unipolar relay control arrows, in parallel to which the NO contact of this relay is connected, connected through series-connected NO the contact of the other of the two unipolar relay control switches and the winding relay control the positive position of the arrow to the other pole of the DC source, and one neither ends of the other polarizing windings are connected to the other pole of the DC power source through the NC contact of one of the two unipolar relay control arrows, in parallel to which the NO contact of this relay is connected, connected through series-connected NO contact of the other unipolar relay control arrow and the coil of the relay for monitoring the negative position of the arrow to the other end of the DC source. 4. The device according to claim 3, characterized in that the 2nd line wire is connected to the 1st line wire through the make contact of the neutral start relay, in parallel with which are connected the normally closed contact of the reversing relay and the normally open working contact of the switch and connected in series normally open contact of the reversing relay and normally closed working contact of the circuit breaker. Priority on points: 12/22/2003 according to claims 1 and 2; 03/29/2004 according to claims 3 and 4.

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