RU81693U1 - ARROW ELECTRIC CONTROL DEVICE WITH A 7-WIRED CONNECTION DIAGRAM AND DC CONTROL CIRCUITS - Google Patents

Abstract

This technical solution relates to the field of electrical engineering (railway automation and telemechanics) and can be used in signaling, centralization and interlocking devices (STB) on main and industrial railway transport, subway lines, in particular, in the MPC-M3-F microprocessor centralization system. The proposed 3-phase 7-wire control circuit of the switch electric drive, in contrast to the widespread control circuits, increases the reliability of detection of false control of the position of the arrow, improves the security of the control circuits when communicating cable cores and other possible short circuits and malfunctions. The technical result is achieved by using the proposed switchgear control device, including due to: - physical separation of electric circuits of the switchgear control circuit into working and control; - the use of two bipolar sources of direct current in the circuit control the position of the arrow; - serial connection in control circuits of the position of the arrow of contacts of various groups of the auto switch; - in particular, the use of the contactless electronic control device ROM4 from the microprocessor centralization MPC-M3-F.

Description

This technical solution relates to the field of electrical engineering (railway automation and telemechanics) and can be used in signaling, centralization and interlocking devices (STB) on main and industrial railway transport, subway lines, in particular, in the MPC-M3-F microprocessor centralization system. According to the proposed solution, a 7-wire control circuit of a pointer electric drive using a three-phase motor and control circuits for the position of the arrow pointer DC is considered.

On the railway network of the Russian Federation, two, three, four, five and seven wire switchgear control circuits are currently used (for example, RU 2278043, RU 67300).

The supply voltage for the switch arrow is supplied through the operating circuits of the switch electric drive control circuit.

The position of the arrow (plus or minus) is controlled by the control circuits.

Depending on the structure of constructing the circuit, the working and control circuits for controlling the pointer electric drive can be either separate or combined, the operating voltage can be either direct or alternating current, the position of the arrow can be controlled by direct or alternating current voltage.

The main operational requirements of control and monitoring circuits for switch drives in electrical centralization systems are the transfer of the switch from one extreme position to another and continuous monitoring of the actual switch position (plus, minus and intermediate).

The proposed 3-phase 7-wire switchgear control circuit, in contrast to the aforementioned (widespread) control circuits, increases the reliability of detection of false control of the position of the arrow, improves the security of control circuits when communicating cable cores and other possible short circuits and malfunctions. In addition, the control circuit under consideration makes it possible to replace conventional control and monitoring devices implemented on a relay element base with a non-contact electronic control device.

These and other results, which are disclosed in this technical proposal, are achieved by using the inventive switchgear control device with a seven-wire connection circuit and DC control circuits.

A switchgear control device with a seven-wire connection circuit and direct current control circuits, containing an electric drive with a 3-phase alternating current electric motor and a contact group of automatic switches, an arrow control and position control device, containing two signaling devices connected to two control circuits powered by of two bipolar DC sources through series-connected contacts of various groups of the auto-switch and carrying out control the position of the arrow on two independent data processing channels in such a way that when

short circuit or interruption of the linear control circuits or loss of contact in the contact group of the automatic switch leads to a blackout of the power supply circuits of one or both signaling devices for monitoring the position of the arrow.

The technical result is achieved by using the proposed control device switch electric drive, including due to:

- physical separation of electrical circuits of the control circuit of the electric drive into working and control;

- the use of two bipolar sources of direct current in the circuit control the position of the arrow;

- serial connection in control circuits of the position of the arrow of contacts of various groups of the auto switch;

- in particular, the use of a ROM4 non-contact electronic control device from the MPC-M3-F microprocessor centralization described in the utility model for application No. 2008134302.

Further, the description of the proposed 3-phase 7-wire arrow control circuit will be illustrated by drawings, in which:

Figure 1 shows the structural diagram of the switch electric drive;

Figure 2 shows a connection diagram of electrical circuits for controlling the position of the arrow.

The position of the elements of the structural diagram of figure 1:

1. - Switch electric drive;

2. - The control device and position control arrows ROM4 from the MPTs-M3-F system.

The position of the circuit diagram of the electrical circuits for controlling the position of the arrow of figure 2:

3. - DC source of positive polarity;

4. - DC source of negative polarity;

5. - Contacts of the electric drive auto-switch;

6. - Signaling device (C1) of the 1st channel for monitoring the positive position of the arrow (P1)

7. - Signaling device (C1) of the 1st channel for monitoring the minus position of the arrow (Ml);

8. - Signaling device (C2) of the 2nd channel for monitoring the minus position of the arrow (M2);

9. - Signaling device (C2) of the 2nd channel for monitoring the positive position of the arrow (P2).

The supply voltage to the switch electric drive 1 and the switching of the operating circuits in the proposed control circuit is carried out by a non-contact electronic device 2 without using the contacts of a circuit breaker, in contrast to the currently used control circuits.

If the arrow is in the positive position and the contacts of the automatic switch 13-14, 35-36 and 15-16 are closed; 33-34, then to the signaling device 6 (C1), for controlling the positive position of the arrow of the 1st channel П1, a constant current source of negative polarity 4 is connected, and to the signaling device 9 (C2) for controlling the positive position of the arrow of the 2nd channel П2, the constant source is connected current of positive polarity 3. Hereinafter, signaling devices are understood to mean a standard device - a voltage analyzer.

Independent two-channel control and comparison of these combinations give reliable control of the plus position of the arrow.

If the arrow is in the negative position and the contacts of the auto switch 23-24 are closed; 45-46 and 25-26; 43-44, then to the signaling device (C1) for monitoring the negative position of the arrow of the 1st channel M1, a positive current direct current source 3 is connected to the signaling device (C2) for monitoring the negative position of the arrow of the 2nd channel M2, a negative current source of direct current 4 is connected .

Independent two-channel control and comparison of these combinations give reliable control of the negative position of the arrow.

The use of 2-channel monitoring of the arrow position control circuits using two independent bipolar power sources leads to a blackout of the power circuits of one or both signaling devices of the arrow position control when the linear control circuits break or when the contact in the contact group of the auto switch is lost, as a result of which the arrow position is lost.

A short circuit in the linear wires of the working and / or control circuits of the electric drive of the arrow leads to the loss of power on one or both signaling devices, as a result of which the control of the position of the arrow is lost.

Thus, the proposed 7-wire switchgear control circuit using a three-phase motor and DC arrow position control circuits eliminates the possibility of false arrow control.

Claims (1)

A switchgear control device with a seven-wire connection circuit and direct current control circuits, containing an electric drive with a 3-phase AC motor and a contact group of automatic switches, an arrow control and position control device, containing two signaling devices connected to two control circuits, powered by two bipolar sources of direct current through series-connected contacts of various groups of the automatic switch and carrying out role hand position in two independent processing channels such that during a short circuit or breakage of linear control circuits, or loss of contact of the contact group avtopereklyuchatelya leads to disconnect power supply circuits of one or both control signaling arrows.