CN113484650A

CN113484650A - Test device for controlling action of alternating current point switch

Info

Publication number: CN113484650A
Application number: CN202110895792.3A
Authority: CN
Inventors: 马占奎; 王国平; 魏民; 栾强; 黄志强; 闫维俊; 王士和; 马建国; 李同健; 刘景松; 李建华
Original assignee: Tianjin Electricity Section of China Railway Beijing Group Co Ltd
Current assignee: Tianjin Electricity Section of China Railway Beijing Group Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-10-08

Abstract

The invention discloses a test device for controlling the action of an alternating current point switch, which belongs to the technical field of point switches and comprises a representation unit, a power supply unit, a pulling unit and an output and input interface for data interaction with a control terminal of the point switch; a timing protection unit for setting the operation duration of the switch machine; the output terminal of the power supply unit is connected with the input side of the inverter unit through the timing protection unit; the output side of the inversion unit is connected with the output-input interface through the positioning inversion switching unit; the pulling unit is connected with the output and input interface through the positioning and inverting switching unit; the pulling unit is connected with the input side of the timing protection unit; the input terminal of the display unit is connected to the output terminal of the power supply unit and the output terminal of the positioning and inverting unit, respectively. The demand of work such as pulling, teaching, interlock test, overhaul switch pre-adjustment is carried out to the interchange goat to the line under this application solution, realizes the adjustment under the switch line, reduces the interior adjust time of construction point, ensures construction quality, ensures construction safety.

Description

Test device for controlling action of alternating current point switch

Technical Field

The invention belongs to the technical field of switches, and particularly relates to a test device for controlling the action of an alternating current switch.

Background

As is well known, a point switch is an important signal base device for reliably switching the position of a turnout, changing the opening direction of the turnout, locking a turnout point rail and reflecting the position of the turnout, and can well ensure the driving safety, improve the transportation efficiency and improve the labor intensity of driving personnel;

at present, when an alternating current point switch machine used for traction of a turnout is subjected to overhaul, teaching and fault treatment, the switching turnout needs to be pulled offline to adjust the turnout, perform interlocking test, transfer teaching and other work, and realize the switching of the alternating current point switch machine offline by using a 220V power supply; the prior switch machine has the following defects through practice discovery:

firstly, the current pull test of the alternating current switch machine can be carried out after being connected with the current indoor combination, or the test device with large volume is applied, and the working condition can be met only by having an alternating current 380v power supply.

Secondly, be unfavorable for the worker teaching, can not demonstrate whole switch operation process for the worker, the switch adjustment needs to pull many times, and pulls and need the special cooperation of indoor personnel, must still go on in the skylight point.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, provides a test device for controlling the action of an alternating current point switch, solves the requirements of offline operations such as pulling, teaching, interlocking test, overhaul turnout pre-adjustment and the like on the alternating current point switch, realizes offline adjustment of the turnout, reduces the adjustment time in a construction point, ensures the construction quality and ensures the construction safety, thereby ensuring the application safety of the turnout and simultaneously meeting the requirements of staff teaching and turnout transfer operation.

The invention aims to provide a test device for controlling the action of an alternating current switch machine, which comprises: the device comprises a representation unit, a power supply unit, an inversion unit and a pulling unit for controlling the action of a point switch;

the output and input interface performs data interaction with the control terminal of the point switch;

a timing protection unit for setting the operation duration of the switch machine; wherein:

the output terminal of the power supply unit is connected with the input side of the inverter unit through the timing protection unit; the output side of the inversion unit is connected with the output-input interface through the positioning inversion switching unit; the pulling unit is connected with the output and input interface through the positioning and inverting switching unit; the pulling unit is connected with the input side of the timing protection unit; and the input terminal of the representation unit is respectively connected with the output terminal of the power supply unit and the output terminal of the positioning inversion switching unit.

Preferably, the inverter unit is an inverter with 220V ac input and 380V ac output.

Preferably, the timing protection unit is a time relay.

Preferably, the representation unit comprises two JPXC-1000 polarization type relays.

The invention has the advantages and positive effects that:

the application uses the large-current small-sized time relay to replace the traditional safety relay, effectively reduces the volume and the weight of the device, and simultaneously realizes the detection function of the original turnout indication circuit on a motor coil, a contact and a wiring by matching with the signal safety relay;

the method adopts a 220V alternating current power supply, and obtains a working power supply of an alternating current 380V motor in an inversion mode; and a three-phase working power supply does not need to be independently equipped, so that the practical problem that an alternating-current three-phase 380V power supply does not exist on site is solved.

This application replaces traditional open-phase protector to realize the open-phase protect function of motor with time relay. The device is small and handy portable, multiple functional, can satisfy the pulling conversion of off-line application 220v power to the alternating current goat, uses small-size high power time relay to realize the circuit function, provides probably for reducing volume, weight. The device can completely meet the working requirements of pulling the turnout off line, adjusting, regulating, decomposing teaching, interlocking test and the like on the turnout, and the requirements of no AC 380V power supply on site and AC turnout test are met by applying 220V AC electrolysis.

Drawings

FIG. 1 is a block circuit diagram of a preferred embodiment of the present invention;

FIG. 2 is a circuit diagram of a preferred embodiment of the present invention;

fig. 3 is a schematic diagram of a delay module in accordance with a preferred embodiment of the present invention.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

this application is to present switch overhaul, the maintenance needs to pull the switch down and carry out interlocking test, need decompose actual need such as pulling to the switch in the worker teaching, research exchanges switch analogue test device, an adjustment for overhaul switch, interlocking test, the teaching decomposes work demand such as pulling, accomplish work such as the switch line is preadjusted down, the distribution is checked, work such as project interlocking test, reduce work load on the line, under the prerequisite of ensureing switch construction safety quality, the compression engineering time, reduce worker intensity of labour, provide reliable assurance for railway transportation safety in production.

The device adopts electronic logic, power conversion technology, simulates and simulates the real working environment and state of the turnout, the power supply is pulled through the frequency converter to output alternating current 380V turnout, the field control of the turnout is realized, an independent detection circuit is applied, the detection of the contact resistance, the wiring, the motor coil, the polarity of the indicating diode and other performances is realized, if the abnormality occurs, an alarm indication is given, the turnout interlocking relationship offline test is ensured to be correct, the online workload is reduced, the construction time is shortened, the construction overhaul quality is improved, and the safety of the traveling equipment is ensured.

As shown in fig. 1 to 3, the technical solution of the present invention is:

a test device for controlling the action of an AC switch machine comprises:

the indicating unit is used for realizing the inspection of the indicating circuit and simultaneously performing the inspection of the motor coil; in the preferred embodiment, the presentation unit comprises two JPXC-1000 polarization type relays;

the input side of the power supply unit is connected with 220V alternating current commercial power, and the three-phase 220V alternating current commercial power is led into the inverter unit; in the preferred embodiment, the inverter unit is an inverter with 220V ac input and 380V ac output.

A pulling unit for controlling the action of the switch machine;

The timing protection unit is a time relay.

Referring to fig. 2, parts are illustrated: 1-pulling compound relay (BDJF), 2-pulling relay (BDJ), 3-transfer relay (CJ), 4-reversal indicating relay (FBJ), 5-positioning indicating relay (DBJ), 6-indicating transformer, 7-reversal indicating lamp (FBD), 8-positioning indicating lamp (DBD), 9-output aviation plug, 10-reversal operating button (FCA), 11-positioning operating button (DCA), 12-time delay module, 13-inversion unit, 14-power air switch, 15-power button, 16-F1/F4/F5 protection fuse, 17-indicating circuit detection lamp, 18-current limiting resistor;

the circuit of the technical scheme of the application takes an alternating current point switch control circuit as a blue book, three relays BDJ, BDJF and CJ are arranged to complete the circuit function, logic level of a pulling process and switching of motor power supply polarity are achieved, two JPXC-1000 polarized relays are adopted in a representation unit to achieve checking of the representation circuit, and checking of a motor coil is achieved.

The working principle is as follows: when the positioning operation button DCA11 (or the reversed operation button FCA10) of the pulling unit is pressed, the BDJ2 and the BDJF exciting circuit 1 are switched on, the BDJ2 and the BDJF exciting circuit 1 suck up and self-close, meanwhile, a working power supply of a delay protection unit 12 is switched on 12, the delay protection unit starts timing power supply, the time is usually set to be 90 seconds, the time can be set according to the field requirement, a working power supply with time limit is supplied to a frequency converter unit 13 after timing is started, the frequency converter unit 13 outputs a three-phase 380V motor working power supply within the time limit time, the motor rotates, and when a turnout is in place, because an automatic switch contact is switched to another position, the motor operation circuit is cut off, the corresponding indicating circuit is turned on according to the contact position condition, DBJ5 (or FBJ4) sucks up, the DBJ5 (or FBJ4) sucks up the contact to turn on the DBD8 (or FBD7) circuit, and the indicating lamp at the corresponding position is turned on. If the turnout can not be switched in place due to reasons, the working power supply of the inverter unit 13 is cut off due to the power failure of the timer after 90 seconds, the motor stops working due to the power failure, and the motor is prevented from being burnt due to long-time working.

As shown in fig. 2: when the power supply air switch 14 is closed, the device obtains a 220V power supply after the power supply button 15 is pressed, the power supply indicator lamp lights a blue light, the device has a 220V power supply at the moment, before the operation button is not pressed, if the switch machine is connected, the contact of the switch machine is good, and at the moment, the switch machine is closed by 1-3, 5 positioning indicates that the relay DBJ is sucked up, and the excitation circuit is as follows: to representTransformer 6 terminal 3 → BDJ_7-8→ the protection fuse 16 → the port 1 of the output aviation plug 9 → the coil of the switch machine motor → the port 4 of the output aviation plug 9 → the protection fuse 16 → the coil of DBJ5 → the coil of DBJ5 → CJ3_3-11→BDJF_8-7→ current limiting resistor 18 → transformer 6 terminal 4, DBJ5 is pulled up at this time, and if the field diode polarity is correct, it indicates that circuit detection lamp 17 is on.

When the turnout needs to be pulled, taking the positioning operation to the reverse position as an example: pressing the reverse operation button 10, the operation button is a self-restoring button, after pressing the button, switching on the BDJ excitation circuit, switching on the working circuit 12 of the delay module at the same time, starting delay power supply, generally setting for 90 seconds, the delay module 4 provides power to the outside, at this moment, the BDJ2 obtains power to excite and suck, and self-closing, the excitation circuit is:

meanwhile, BDJF1 is excited to attract and self-close, at the moment, a CJ3 transfer relay is also excited to attract and self-close, BDJF1, BDJ2 and CJ3 (transfer relay) are matched to enable 13 inverter units to obtain power supply work and send out 380V working power supply needed by a motor, and the circuit is as follows:

the motor rotates to drive the turnout to be switched, after the switching is finished, the automatic switch contact inside the motor disconnects the motor working circuit, the motor stops rotating, and the automatic switch contact is connected with the turnout indication circuit, so that the FBJ4 is attracted by the magnet, the BDJ2 and the DBJF1 self-closing circuit are cut off, the power supply of the inverter unit 13 is cut off, and the inverter unit 13 stops working. If the turnout can not be converted in place due to reasons, after 90 seconds, the delay module stops outputting power, so that 1BDJF and 2BDJ can not obtain power and fall down, the inverter unit is powered off and does not work, the motor stops working, and therefore the turnout is guaranteedThe motor is protected from being burnt.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A test device for controlling the action of an alternating current switch machine comprises a representation unit, a power supply unit, an inversion unit and a pulling unit for controlling the action of the switch machine; it is characterized by at least comprising:

2. The test apparatus for controlling the operation of an ac switch machine according to claim 1, wherein the inverter means is an inverter for ac 220V input and ac 380V output.

3. The testing apparatus for controlling the operation of an ac switch machine as claimed in claim 1, wherein said timing protection unit is a time relay.

4. The testing apparatus for controlling the operation of an ac switch machine as claimed in claim 1, wherein said indicating unit comprises two JPXC-1000 polarization relays.