CN115257859A - Switch control circuit and device for remote control - Google Patents
Switch control circuit and device for remote control Download PDFInfo
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- CN115257859A CN115257859A CN202211018798.3A CN202211018798A CN115257859A CN 115257859 A CN115257859 A CN 115257859A CN 202211018798 A CN202211018798 A CN 202211018798A CN 115257859 A CN115257859 A CN 115257859A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000002441 reversible effect Effects 0.000 claims description 35
- 230000001012 protector Effects 0.000 claims description 21
- 230000005284 excitation Effects 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 13
- 241000283707 Capra Species 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000001808 coupling effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
- B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The embodiment of the application discloses a turnout switch control circuit and a device for remote control, wherein the turnout switch control circuit comprises an indoor circuit and an outdoor circuit; the indoor circuit is connected with a turnout switch machine through the outdoor circuit; the indoor circuit is positioned in a signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable and provides a working power supply for the turnout switch machine; the outdoor circuit is positioned in a control box outside the signal chamber, is connected with the turnout switch machine through a cable, and is used for controlling the turnout switch machine and monitoring the position state of a turnout correspondingly adjusted by the turnout switch machine.
Description
Technical Field
The application relates to the technical field of railway and rail traffic signals, in particular to turnout switch control for remote control.
Background
A switch is a trackside facility that branches a railway line (or track line, the same below) into two or more lines. In order to ensure the transportation safety, all switches on the operating line must be accessed into a station signal building (room) through cables for centralized interlocking and control. In order to save cables and check the consistency of the action and the representation of the turnout, the starting circuit and the representation circuit of the existing turnout control circuit share an outdoor cable core wire. However, due to the problem of voltage drop of the electric line, the farthest distance of a single core of the cable of the alternating current point switch is generally within 2.5km, when the distance exceeds the length, in order to overcome the insufficient voltage supply caused by the transmission voltage drop of the starting circuit, a cable core adding method is adopted for realizing the purpose, and therefore the problems caused by the method are that the distributed capacitance between cable cores is increased, under the coupling effect of the distributed capacitance, a turnout indication circuit can generate larger induced voltage, and the result that the turnout indication circuit works wrongly can occur in severe cases.
Near some junction stations, because of the needs of line untwining and speed raising, turnouts are often arranged at lines (often 2.5-6 km) far away from the stations, the control circuit of the remote turnout is difficult to completely solve the problem of overhigh induced voltage of the turnout indication circuit technically, and at present, the problem can be solved only by engineering measures, such as arranging a signal building near the remote turnout, adopting a set of independent signal interlocking system equipment or adopting a regional interlocking mode to control the remote turnout; or the core wire connected to the indicating circuit is separated from other core wires. However, the former needs thousands of elements of engineering investment, and also increases the equipment maintenance workload and cost in the operating period, and the latter only weakens the electromagnetic coupling effect between the core wire representing the circuit connection and other core wires, and cannot completely eliminate the electromagnetic coupling effect, and when the cable length continues to be lengthened, the consequence that the turnout indicates the circuit malfunction still occurs.
Disclosure of Invention
Embodiments of the present application are intended to provide a switch control circuit and apparatus for a switch for remote control.
The technical scheme of the application is realized as follows:
embodiments of a first aspect of the present application provide a turnout switch control circuit for remote control, the circuit comprising an indoor circuit and an outdoor circuit; the indoor circuit is connected with a turnout switch machine through the outdoor circuit; the indoor circuit is positioned in a signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable and provides a working power supply for the turnout switch machine; the outdoor circuit is positioned in a control box outside the signal chamber, is connected with the turnout switch machine through a cable, and is used for controlling the turnout switch machine and monitoring the position state of a turnout correspondingly adjusted by the turnout switch machine.
Optionally, the outdoor circuit comprises a switch indication circuit; the turnout indication circuit comprises a first positioning relay 1DBJ and a first reverse relay 1FBJ, and when the first positioning relay 1DBJ is attracted, the turnout switch machine is in a positioning state; when the first reverse relay 1FBJ is attracted, the turnout switch machine is in a reverse state.
Optionally, the switch indicating circuit further includes a first start relay 1DQJF and a second start relay 2DQJF;
when the first starting and repeating relay 1DQJF is attracted, a loop of the turnout indication circuit is disconnected, the first positioning relay 1DBJ and the first reverse relay 1FBJ lose magnetism and fall, and a working power supply of the turnout switch machine is switched on; if the second starting and repeating relay 2DQJF is in a locating state, the turnout switch machine is connected with a forward working power supply to control the turnout to be switched to the locating state; and if the second starting and repeating relay 2DQJF is in a reverse state, the turnout switch machine is connected with a reverse working power supply, and the turnout is controlled to be switched to the reverse state.
Optionally, when the first start-up relay 1DQJF falls, the working power supply of the turnout switch machine is turned off, and the turnout indicates that the loop of the circuit is turned on; if the second starting and repeating relay 2DQJF is in a positioning state, an excitation circuit of the first positioning relay 1DBJ is conducted; and if the second starting and repeating relay 2DQJF is in a reversal state, the excitation circuit of the first reversal relay 1FBJ is conducted.
Optionally, the indoor circuit further comprises a first power supply terminal and a first start relay 1DQJ; the first power supply end is connected with the first starting and repeating relay 1DQJF through the first starting relay 1DQJ, and the first starting and repeating relay 1DQJF is used for repeating the working state of the first starting relay 1 DQJ.
Optionally, the indoor circuit further comprises a second starting relay 2DQJ; the first power supply end is connected with the second starting and repeating relay 2DQJF through the second starting relay 2DQJ, and the second starting and repeating relay 2DQJF is used for repeating the working state of the second starting relay 2 DQJ.
Optionally, the outdoor circuit further comprises a second power supply terminal, and the indoor circuit further comprises a second positioning relay 2DBJ and a second flip relay 2FBJ; the switch indication circuit further comprises a positioning indication contact and a reverse position indication contact;
the second power source terminal is connected to a second positioning relay 2DBJ and a second flipping relay 2FBJ in the indoor circuit through the positioning representing contact and the flipping representing contact; the second positioning relay 2DBJ and the second reset relay 2FBJ are respectively used for repeating the working states of the first positioning relay 1DBJ and the first reset relay 1 FBJ.
Optionally, indoor circuit still includes open-phase protector DBQ-S and protective relay BHJ, open-phase protector DBQ-S is used for monitoring whether the power signal of three phase current source breaks phase, and when the power signal breaks phase, cuts off protective relay BHJ ' S excitation return circuit, protective relay BHJ loses the magnetism and falls the back and cuts off first starting relay 1DQJ ' S excitation return circuit, and passes through first starting is repeated relay 1DQJF ' S contact and is cut off the working power supply of switch point machine.
Optionally, the outdoor circuit further comprises a switch indication transformer BB, a current limiting resistor and at least one over-current protector;
the representation transformer BB is used for providing an alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout indication circuit;
and the overcurrent protector is used for being disconnected when the reflux current value of the turnout indication circuit is overlarge, so as to protect the turnout indication circuit.
Embodiments of the second aspect of the present application provide a switch control device for a remote control, comprising: at least one set of the switch point control circuit and the shock-absorbing frame of the first aspect, wherein the first positioning relay 1DBJ, the first reverse relay 1FBJ, the first start relay 1DQJF, the second start relay 2DQJF, the switch indication transformer BB, the current-limiting resistor, and the over-current protector are located on at least one shock-absorbing frame, and the shock-absorbing frame is fixed in a control box; and at least one set of outdoor circuits in the control box is used for controlling a traction point turnout switch machine of at least one set of turnout.
The turnout switch control circuit comprises an indoor circuit and an outdoor circuit; the indoor circuit is connected with a turnout switch machine through the outdoor circuit; the indoor circuit is positioned in a signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable and provides a working power supply for the turnout switch machine; the outdoor circuit is positioned in a control box outside the signal chamber, is connected with the turnout switch machine through a cable, and is used for controlling the turnout switch machine and monitoring the position state of a turnout correspondingly adjusted by the turnout switch machine. Adopt the technical scheme of this application, through will keeping away from some circuits of the switch control circuit of goat and locating in the other control box of goat, the cable length of the circuit that shows of switch has been shortened, thereby eliminated the switch and shown the adverse effect that the circuit received cable core line distribution capacitive coupling effect and brought, guaranteed switch starting circuit and switch and shown the exactness and the accuracy of circuit, and can reduce the switch and show the condition that the circuit cable adds the core, reduce engineering construction cost and operation maintenance cost.
Drawings
Fig. 1 is a first schematic structural diagram of a switch control circuit for a remote control switch according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a turnout switch control circuit for remote control according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a connection relationship between an indoor circuit and an outdoor circuit according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a switch control device for remote control according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Furthermore, the drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the steps. For example, some steps may be decomposed, and some steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
Usually, the farthest distance of a single cable of an alternating current switch machine is generally within 2.5km, when the distance exceeds the length, in order to overcome the insufficient voltage supply caused by the transmission voltage drop of a starting circuit, a cable core adding method is often adopted for realizing the method, so that the problem brought about is that the distributed capacitance between cable cores is increased, under the coupling action of the distributed capacitance, a turnout indication circuit can generate larger induced voltage, and the consequence that the turnout indication circuit works wrongly can be caused in severe cases. Therefore, how to ensure the correctness and accuracy of the switch starting circuit and the representation circuit is necessary.
In some embodiments, the switch control circuit is located in the signal room, and the start circuit and the indicating circuit of the switch control circuit share a cable core outside the room and are remotely connected with the switch machine through the shared cable core. For example, a relay type five-wire system (X1 line to X5 line).
However, when the length of the switch control cable between the signal room and the switch machine exceeds a certain distance, in order to ensure the switch machine to be switched reliably, the core wires X1 to X5 between the starting circuit and the switch machine need to be cored to reduce the cable voltage drop, and the cable generates a coupling phenomenon due to the distributed capacitance generated among the core wires X1, X2, X3, X4 and X5 and on the ground while transmitting power, which affects the normal operation of the switch indication circuit. Based on this, the following examples are provided.
In some embodiments, referring to fig. 1, fig. 1 is a schematic structural diagram of a turnout switch control circuit for remote control according to an embodiment of the present disclosure, where the turnout switch control circuit 100 includes: an indoor circuit 110 and an outdoor circuit 120; the indoor circuit 110 is connected with the turnout switch machine 130 through the outdoor circuit 120;
an indoor circuit 110, which is located in the signal room and includes a three-phase power supply, and the three-phase power supply is connected to the outdoor circuit 120 through a cable to provide a working power supply for the switch machine 130;
and the outdoor circuit 120 is located in the control box outside the signal chamber, is connected with the turnout switch machine 130 through a cable, and is used for controlling the turnout switch machine 130 and monitoring the position state of the turnout correspondingly adjusted by the turnout switch machine 130.
The switch control circuit that this embodiment provided is applied to the switch machine. The switch machine is a signal basic device for reliably converting the position of a switch, changing the opening direction of the switch, locking a switch point and reflecting the position of the switch, and can provide a working power supply for the switch through a three-phase power supply. The three-phase power supply is composed of three AC potentials with same frequency, equal amplitude and phase difference of 120 deg.
In the embodiment, the control circuit is divided into two parts, namely an indoor circuit and an outdoor circuit; the indoor circuit is located in the signal chamber and connected with the turnout switch machine through a cable, provides a working power supply for the turnout switch machine and is not influenced by distance factors. The outdoor circuit is positioned in a control box near the turnout switch machine, transmits control instructions for the turnout switch machine, controls various working modes of the turnout switch machine, and monitors the position state of the turnout correspondingly adjusted by the turnout switch machine. When the distance between the switch machine and the signal chamber is far, the outdoor circuit can be also far away from the signal chamber and close to the switch machine, namely, the switch machine is controlled at a short distance without being influenced by distance factors. In this embodiment, set up outdoor circuit in being close to the control box of switch goat, when the switch control cable length extension between signal room and the switch goat, the signal transmission distance between outdoor circuit in the control box and the switch goat does not prolong, has guaranteed switch starting circuit in control box and the switch goat frame and has shown the exactness and the accuracy of circuit.
This embodiment is through moving some circuits of the switch control circuit who keeps away from the goat and locating in the other control box of goat, has shortened the cable length of the demonstration circuit of switch to eliminated the switch and shown the adverse effect that the circuit received distribution capacitive coupling effect between the cable core and brought, ensured switch starting circuit and the exactness and the accuracy of showing the circuit, and can reduce the switch and show the condition that the circuit cable adds the core, reduce construction cost.
In some embodiments, please refer to fig. 2, fig. 2 is a schematic structural diagram of a switch control circuit according to an embodiment of the present disclosure; the indoor phase failure protector DBQ-S and the protection relays BHJ, A, B and C are three input interfaces corresponding to a three-phase power supply. The phase failure protector DBQ-S can make the protection relay BHJ lose magnetism and fall down by outputting a corresponding instruction, thereby controlling the working power supply of the turnout switch machine. RD1, RD2, RD3 and RD5 are fuses or circuit breakers, and are fused when the current in the circuit is abnormal, so that the safety of each device in the circuit is ensured.
The outdoor circuit comprises a first positioning relay 1DBJ, a first reverse relay 1FBJ, a first starting and repeating relay 1DQJF and a second starting and repeating relay 2DQJF; the relays are mutually matched to control various working modes of the turnout switch machine. And R1 is a current-limiting resistor for limiting the reflux current value of the turnout indication circuit.
In some embodiments, please refer to fig. 3, fig. 3 is a schematic diagram illustrating a connection relationship between an indoor circuit and an outdoor circuit according to an embodiment of the present disclosure; the outdoor circuit comprises a turnout indication circuit; the turnout indication circuit comprises a first positioning relay 1DBJ and a first reverse relay 1FBJ, and when the first positioning relay 1DBJ is sucked, the turnout switch machine is in a positioning state; when the first reverse relay 1FBJ is sucked, the turnout switch machine is in a reverse state.
In this embodiment, X4-X13 are external cables for connecting the indoor circuit and the outdoor circuit, and here, the switch indicating circuit includes a set of first positioning relay 1DBJ and first flipping relay 1FBJ near the forward input BZ, and another set of first positioning relay 1DBJ and first flipping relay 1FBJ near the backward input BF, and two sets of first positioning relay 1DBJ and first flipping relay 1FBJ are connected in series. It should be noted that the forward signal terminal BZ and the backward signal terminal BF are adjustable, i.e. the transmission direction of the control signal in the loop may be different.
In some embodiments, referring to fig. 3 again, the switch representation circuit further includes a first start relay 1DQJF and a second start relay 2DQJF;
when the first starting and repeating relay 1DQJF is attracted, a loop of a turnout indicating circuit is disconnected, the first positioning relay 1DBJ and the first reverse relay 1FBJ lose magnetism and fall, and a working power supply of a turnout switch machine is switched on; if the second starting and repeating relay 2DQJF is in a locating state, the turnout switch machine is connected with a forward working power supply, and the turnout is controlled to be switched to the locating state; if the second starting and repeating relay 2DQJF is in a reverse state, the turnout switch machine is connected with a reverse working power supply, and the turnout is controlled to be switched to the reverse state.
Here, the first start-up relay 1DQJF and the second start-up relay 2DQJF are located in different loops, and when the first start-up relay 1DQJF is attracted, the working power supply of the turnout switch machine is turned on, that is, the turnout switch machine can work normally, at this moment, the working state of the turnout can be adjusted by adjusting the working state of the second start-up relay 2DQJF, thereby switching and controlling the working state of the turnout.
In some embodiments, when the first starting relay 1DQJF falls, the working power supply of the turnout switch machine is disconnected, and the turnout indicates that the loop of the circuit is on; if the second starting and repeating relay 2DQJF is in a positioning state, an excitation circuit of the first positioning relay 1DBJ is conducted; if the second start-up relay 2DQJF is in the inverted state, the excitation circuit of the first inverted relay 1FBJ is turned on.
Similar to the above embodiment, the first start-up relay 1DQJF and the second start-up relay 2DQJF are located in different branches, and when the first start-up relay 1DQJF falls, the operating power supply of the switch machine is turned off, that is, the switch machine stops operating, at this time, the operating state of the second start-up relay 2DQJF can be adjusted, so as to control the operating state of the first positioning relay 1DBJ or the first flipping relay 1 FBJ.
In some embodiments, the indoor circuit further comprises a first power supply terminal and a first starter relay 1DQJ; the first power supply end is connected with the first starting and repeating relay 1DQJF through the first starting relay 1DQJ, and the first starting and repeating relay 1DQJF is used for repeating the working state of the first starting relay 1 DQJ.
In this embodiment, the first power source terminal is located on the indoor circuit side, the first power source terminal may include a forward signal terminal BZ and a reverse signal terminal BF of the control signal, the first start relay 1DQJF is located between the two first start relays 1DQJ, and the two first start relays 1DQJ are respectively connected to the forward signal terminal BZ and the reverse signal terminal BF. In some embodiments, the indoor circuit further comprises a second starting relay 2DQJ; the first power supply end is connected with the second starting and repeating relay 2DQJF through the second starting relay 2DQJ, and the second starting and repeating relay 2DQJF is used for repeating the working state of the second starting relay 2 DQJ.
In this embodiment, the second start-up relay 2DQJF is located between two second start-up relays 2DQJ, and the two second start-up relays 2DQJ are connected to the forward signal terminal BZ and the reverse signal terminal BF respectively. The control principle of the indoor starting relay is the same as that of the first starting relay 1DQJF in the previous embodiment, in some embodiments, the outdoor circuit further comprises a second power supply end, and the indoor circuit further comprises a second positioning relay 2DBJ and a second inversion relay 2FBJ; the switch indication circuit also comprises a positioning indication contact and a reverse position indication contact;
the second power supply terminal is connected with a second positioning relay 2DBJ and a second flip relay 2FBJ in the indoor circuit through a positioning representation contact and a flip representation contact; the second positioning relay 2DBJ and the second flipping relay 2FBJ are used to repeat the operating states of the first positioning relay 1DBJ and the first flipping relay 1FBJ, respectively.
In this embodiment, the second power source terminal is located on the outdoor circuit side, and the second power source terminal may include a forward signal terminal BZ and a reverse signal terminal BF of the control signal, and include a set of first positioning relay 1DBJ and first flipping relay 1FBJ adjacent to the forward input terminal BZ between the forward signal terminal BZ and the reverse signal terminal BF, and another set of first positioning relay 1DBJ and first flipping relay 1FBJ adjacent to the reverse input terminal BF, and the two sets of first positioning relays 1DBJ and first flipping relays 1FBJ are connected in series. Can duplicate the operating condition of first positioning relay 1DBJ and first flip relay 1FBJ respectively through second positioning relay 2DBJ and second flip relay 2FBJ, and then when first positioning relay 1DBJ is inhaled, the operating condition of second positioning relay 2DBJ is for inhaling equally, make the switch goat be in the positioned state, when first flip relay 1FBJ is inhaled, the operating condition of second flip relay 2FBJ is for inhaling equally, make the switch goat be in the flip state.
In some embodiments, the indoor circuit further includes a phase-failure protector DBQ-S and a protection relay BHJ, where the phase-failure protector DBQ-S is configured to monitor whether a power signal of the three-phase power supply is phase-failed, and when the power signal is phase-failed, an excitation loop of the protection relay BHJ is cut off, and after the protection relay BHJ loses its field and falls, the excitation loop of the first start relay 1DQJ is cut off, and a working power supply of the turnout switch machine is cut off through a contact of the first start relay 1 DQJF.
A phase-break protector DBQ-S is a protection device that relies on the disappearance of current in one phase conductor of a multi-phase circuit to break the protected equipment or on the loss of voltage of one or several phases of a multi-phase system to prevent the application of power to the protected equipment. When the main circuit of the turnout switch machine is in abnormal working states such as phase failure, overload, three-phase imbalance and the like, the phase failure protector DBQ-S can break the contact of the switching device in time, disconnect the three-phase power supply of the turnout switch machine and quickly and reliably protect the turnout switch machine. In this embodiment, when a phase failure occurs in one phase of the three-phase power supply, the phase has no current, and the current of the other phase is higher than the rated current, at this time, the phase failure protector DBQ-S cuts off the excitation loop of the protection relay BHJ, and further cuts off the working power supply of the switch machine, thereby implementing the phase failure protection.
In some embodiments, the outdoor circuit further comprises a switch indication transformer BB, a current limiting resistor and at least one over-current protector;
the representation transformer BB is used for providing an alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout indication circuit;
and the overcurrent protector is used for being disconnected when the reflux current value of the turnout indication circuit is overlarge, so that the turnout indication circuit is protected.
In this embodiment, the transformer BB (BD 1-7) is used for voltage conversion, and can convert the input power signal into an appropriate ac power to supply the operating voltage to the switch indication circuit. The current limiting resistor R1 is used for limiting the reflux current value of the turnout indication circuit; and the overcurrent protector is used for being disconnected when the reflux current value of the turnout indication circuit is overlarge, protecting the turnout indication circuit and preventing each device in the circuit from being damaged.
In some embodiments, the cable between the three-phase power supply and the control circuit is a three-core cable or a five-core cable.
In this embodiment, outdoor circuit is located the other control box of switch machine, and the distance is nearer, need not basically add the core and handle, even when the cable length of switch control surpassed certain distance, also can add the core according to conventional method, does not influence the normal work that the circuit was shown to the switch. The cable may not be limited to a three-core cable and a five-core cable, but may also be an eight-core cable or a ten-core cable, and is not limited thereto.
This application has shortened the cable length of the circuit that shows of switch through moving some circuit of the switch control circuit who will keep away from the goat in locating the other control box of goat to eliminated the switch and shown the adverse effect that the circuit brought by cable core line distribution capacitive coupling effect, ensured switch starting circuit and the exactness and the accuracy that show the circuit, and can reduce the switch and show the condition that the circuit cable adds the core, reduce the cost of construction.
In some embodiments, please refer to fig. 4, fig. 4 is a schematic structural diagram of a switch control device for remote control according to an embodiment of the present disclosure; the switch controlling means for remote control that this application embodiment provided includes: the switch control circuit and the shock absorption frame of the switch in the embodiment, wherein the transformer BB, the current limiting resistor and the overcurrent protector are located on at least one shock absorption frame through the first positioning relay 1DBJ, the first reverse relay 1FBJ, the first starting and repeating relay 1DQJF, the second starting and repeating relay 2DQJF and the switch, the shock absorption frame is fixed in the control box 140, and at least one set of outdoor circuit in the control box is used for controlling the switch machine of at least one switch traction point. The switch control circuit can control the switch machine to work according to the power signal so as to realize switch conversion. Here, the shock absorbing mount is used to reduce the impact from the rail surface and ensure the normal operation of the relays.
Here, it should be noted that: the above description of the switch control device embodiment is similar to the above description of the switch control circuit embodiment, with similar benefits. For technical details that are not disclosed in the embodiments of the switch control device of the present application, please refer to the description of the embodiments of the switch control circuit of the present application for understanding, and detailed description thereof is omitted.
In the several embodiments provided in the present application, it should be understood that the disclosed circuits and devices may be implemented in other ways. The circuit and device embodiments described above are merely illustrative.
The switch control circuit and the switch control device described in the embodiments of the present application are only examples of the embodiments of the present application, but are not limited thereto, and the switch control circuit and the switch control device are all within the scope of the present application.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply any order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive or replace the present application within the technical scope disclosed in the present application, and therefore, the present application should be covered by the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A switch control circuit for a remote control switch, the circuit comprising an indoor circuit and an outdoor circuit; the indoor circuit is connected with a turnout switch machine through the outdoor circuit;
the indoor circuit is positioned in a signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable and provides a working power supply for the turnout switch machine;
the outdoor circuit is positioned in a control box outside the signal chamber, is connected with the turnout switch machine through a cable, and is used for controlling the turnout switch machine and monitoring the position state of a turnout correspondingly adjusted by the turnout switch machine.
2. The switch control circuit of claim 1, wherein the outdoor circuit comprises a switch indication circuit; the turnout indication circuit comprises a first positioning relay 1DBJ and a first reverse relay 1FBJ, and when the first positioning relay 1DBJ is attracted, the turnout switch machine is in a positioning state; when the first reverse relay 1FBJ is attracted, the turnout switch machine is in a reverse state.
3. The switch control circuit of claim 2, wherein the switch indicating circuit further comprises a first start relay 1DQJF and a second start relay 2DQJF;
when the first starting and repeating relay 1DQJF is attracted, a loop of the turnout indication circuit is disconnected, the first positioning relay 1DBJ and the first reverse relay 1FBJ lose magnetism and fall, and a working power supply of the turnout switch machine is switched on; if the second starting and repeating relay 2DQJF is in a locating state, the turnout switch machine is connected with a forward working power supply to control the turnout to be switched to the locating state; and if the second starting and repeating relay 2DQJF is in a reverse state, the turnout switch machine is connected with a reverse working power supply to control the turnout to be switched to the reverse state.
4. The switch control circuit of claim 3, wherein when the first start-up relay 1DQJF falls, the operating power of the switch machine is turned off, and the switch indicates that the circuit is turned on; if the second starting and repeating relay 2DQJF is in a locating state, the excitation circuit of the first locating relay 1DBJ is conducted; and if the second starting and repeating relay 2DQJF is in a reverse state, the excitation circuit of the first reverse relay 1FBJ is conducted.
5. The switch control circuit of the switch as claimed in claim 4, wherein said indoor circuit further comprises a first power terminal and a first starting relay 1DQJ; the first power supply end is connected with the first starting and repeating relay 1DQJF through the first starting relay 1DQJ, and the first starting and repeating relay 1DQJF is used for repeating the working state of the first starting relay 1 DQJ.
6. The switch control circuit of claim 5, wherein the indoor circuit further comprises a second starting relay 2DQJ; the first power supply end is connected with the second starting and repeating relay 2DQJF through the second starting relay 2DQJ, and the second starting and repeating relay 2DQJF is used for repeating the working state of the second starting relay 2 DQJ.
7. The switch control circuit of claim 5, wherein the outdoor circuit further comprises a second power terminal, and the indoor circuit further comprises a second positioning relay 2DBJ and a second toggle relay 2FBJ; the switch indication circuit further comprises a positioning indication contact and a reverse position indication contact;
the second power source terminal is connected to a second positioning relay 2DBJ and a second flipping relay 2FBJ in the indoor circuit through the positioning representing contact and the flipping representing contact; the second positioning relay 2DBJ and the second reset relay 2FBJ are respectively used for repeating the working states of the first positioning relay 1DBJ and the first reset relay 1 FBJ.
8. The switch control circuit of claim 5, wherein the indoor circuit further comprises a phase-failure protector DBQ-S and a protection relay BHJ, the phase-failure protector DBQ-S is used for monitoring whether a power signal of the three-phase power supply is phase-failure or not, and when the power signal is phase-failure, an excitation loop of the protection relay BHJ is cut off, the excitation loop of the first starting relay 1DQJ is cut off after the protection relay BHJ loses field and falls down, and a working power supply of the switch machine is cut off through a contact of the first starting relay 1 DQJF.
9. The switch control circuit of claim 5, wherein the outdoor circuit further comprises a switch indication transformer (BB), a current limiting resistor and at least one over-current protector;
the representation transformer BB is used for providing an alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout indication circuit;
and the overcurrent protector is used for being disconnected when the reflux current value of the turnout indication circuit is overlarge to protect the turnout indication circuit.
10. A switch control device for a remotely controlled switch, comprising: the switch control circuit of at least one set of claim 9, wherein said first positioning relay 1DBJ, said first flip relay 1FBJ, said first start relay 1DQJF, said second start relay 2DQJF, said switch representation transformer BB, said current limiting resistor and said overcurrent protector are located on at least one shock mount, said shock mount being fixed within a control box; and at least one set of outdoor circuits in the control box is used for controlling a traction point turnout switch machine of at least one set of turnout.
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