Method for quickly finding fault point of multi-machine traction electric switch machine circuit

Abstract

The application provides a method for quickly finding a fault point of a multi-machine traction electric switch machine circuit, comprising: a circuit detection plate, wherein three display lamps of the same polarity are sequentially connected in series on the circuit detection plate; when the circuit detection plate is used to find the fault point, the display lamps are connected to different phase circuits of the multi-machine traction electric switch machine circuit, and whether the display lamps connected to multiple distribution panel specified terminals in each phase circuit are bright is detected to determine the position of the fault point; wherein one display lamp is connected to one phase circuit of the multi-machine traction electric switch machine circuit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fault point processing of turnout circuit of high-speed railway and urban rail transit engineering signal system, and particularly relates to a method for quickly finding fault points of multi-machine traction electric switch machine circuit. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The high-speed railway electric switch machine control circuit is a three-phase alternating current system, including two-machine traction, three-machine traction, five-machine, seven-machine, nine-machine and other multi-machine traction circuits in ZY series, ZDJ9 and S700K series. The urban rail transit line is a No. 9 turnout, and a double-machine traction circuit is usually used. Both the few-machine traction circuits contain a starting circuit and an indicating circuit. The 1DQJ in the starting circuit is a transient pull-up type relay circuit. In the case that the circuit at the outdoor switch machine does not form a loop, the 1DQJ only maintains the pull-up state for two seconds. When a technician measures the fault point, the time meter can only flicker once or the voltage pointer can only swing for a short time, and the fault point cannot be found in detail. On the other hand, the three-phase alternating current voltage is high, and the 380V power supply may spark during the fault finding process, and the technician may have a fear. This results in that the engineering technicians have high business level, and the fault finding is slow. In order to solve this problem, some construction units place the switch machine in the machine room, and a person is in charge of the state of the switch machine during the test. This also results in that it is difficult to determine which a / b / c phase has a problem when a fault occurs, the guidance is not clear, and time, effort and labor are wasted. SUMMARY

[0004] In order to solve the above problems, the present application provides a method for quickly finding fault points of multi-machine traction electric switch machine circuit. In the present application, three 200W bulbs are fixed on a flat plate, and the phases A, B and C represented by each bulb are marked. The three bulbs are connected in series with the same polarity, and are connected to the ground end of the power supply by a wire. The high-voltage polarity is held in the hands of the technician. When processing a fault, the A, B and C phases are sequentially connected in the circuit. When the operating circuit is operated, the unlit bulb is the fault point, and the fault point is sequentially found and processed.

[0005] According to some embodiments, the present application adopts the following technical solutions:

[0006] The application discloses a method for quickly finding a fault point of a multi-machine traction electric switch machine circuit.

[0007] Compared with the prior art, the application has the following beneficial effects:

[0008] (1) The main test tool of the application is a 3*200W bulb combination, which is convenient to move in a machine room.

[0009] (2) The main test tool of the application is a 3*200W bulb combination, which is marked with A, B and C phases, and can quickly and accurately determine the fault point of which phase.

[0010] (3) The application has few technical personnel and high work efficiency. One supervisor engineer and three skilled workers can complete the interlocking test work of a station in one day; compared with the traditional method, three supervisor engineers and five skilled workers can complete the interlocking test work of a station in five days.

[0011] (4) The application adopts the bulb method to test the 380V high-voltage power supply, and the switch can be operated and the 220V power supply can be connected only after the test line is connected, so that the safety performance is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings accompanying the specification of the application form a part of the application and serve to provide further understanding of the application. The exemplary embodiments of the application and their description serve to explain the application, and do not constitute an improper limitation of the application.

[0013] Fig. 1(a) is a part of a circuit diagram of the application for quickly finding a fault point of a multi-machine traction electric switch machine circuit;

[0014] Fig. 1(b) is another part of a circuit diagram of the application for quickly finding a fault point of a multi-machine traction electric switch machine circuit;

[0015] Fig. 2(a) is a circuit diagram of a fault point detection process when A phase is faulty and B phase and C phase are normal;

[0016] Fig. 2(b) is a circuit diagram of a fault point detection process when B phase is faulty and A phase and C phase are normal;

[0017] Fig. 2(c) is a circuit diagram of a fault point detection process when C phase is faulty and A phase and B phase are normal.

[0018] Figure 3 is a flow chart of the method for quickly finding a fault point of the illustrated multi-machine traction electric switch machine circuit of the present application. DETAILED DESCRIPTION

[0019] The present application is further described below in conjunction with the accompanying drawings and examples.

[0020] It should be noted that the following detailed description is merely exemplary and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0021] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present 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, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0022] In the present application, the terms such as "lower", "left", "right", "front", "back", "side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only a relationship word determined for the purpose of describing the structural relationship of the components or elements of the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0023] In the present application, the terms such as "connected", "connected" and the like should be understood broadly, which means that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant researchers or technicians in the art, the specific meaning of the above terms in the present application can be determined according to the specific circumstances, and cannot be understood as a limitation of the present application.

[0024] Term explanation:

[0025] 1DQJ refers to the instantaneous pick-up relay circuit, 1DQJF refers to the first turnout starting relay, 2DQJ refers to the second turnout starting relay, RD1 refers to the first fuse, RD2 refers to the second fuse, RD3 refers to the third fuse, DBJ refers to the position indicating relay, FBJ refers to the reverse indicating relay, F1-405-1 refers to the first terminal of the first terminal board of the fourth layer and the fifth block of the first distribution cabinet, F1-405-3 refers to the third terminal of the first terminal board of the fourth layer and the fifth block of the first distribution cabinet, F1-405-4 refers to the fourth terminal of the first terminal board of the fourth layer and the fifth block of the first distribution cabinet, 2DQJ111 refers to the 111 contact of the second turnout starting relay, ZDJ9 refers to the ninth generation of AC electric switch machine, and DBQ refers to the phase failure protector.

[0026] The embodiment provides a method for quickly finding a fault point of a multi-machine traction electric switch machine circuit, which comprises fixing a flat plate of three 200W bulbs, relevant four long polarity lines, and sequentially excluding according to a circuit diagram when finding a fault, as shown in FIG. 1 (a) and FIG. (b).

[0027] The bulbs are fixed firmly with the flat plate, the three neutral polarity lines are correctly and firmly connected, the four A, B, C and N polarity phase lines are long enough to be connected to any relay and distribution panel position indoors, and it is recommended that the wire diameter adopts a copper core multi-strand wire not less than 1.0 square millimeter.

[0028] The process flow of the indoor circuit for quickly positioning a fault point is as shown in FIG. 2. Figure 3 Because the C-phase power supply is not connected to the 2DQJ contact, when the combination side power supply measuring bulb is bright, the C-phase test position remains unchanged, and the A-phase and B-phase are moved to the 2DQJ contact position for testing; when the 1DQJ contact is tested, the C-phase is connected to the 1DQJF contact, which is different from the 1DQJ contact of the A-phase and B-phase positions. Specifically, the case that the C-phase has no fault is described, and if the C-phase bulb is not bright, the A-phase and B-phase fault positioning method is also referred to for processing. The specific process is as follows:

[0029] The three 200W bulbs in the indoor circuit for quickly positioning a fault point device must be fixed firmly;

[0030] As one or more embodiments, the same polarity of each bulb is connected to the neutral terminal, which must be firmly crimped, otherwise the bulb will be burned out. For example, the N-polarity connection of the bulb in FIG. 1 (a) must be firmly connected whether it is a welding type or a crimping type;

[0031] As one or more implementation methods, the other polarity of each bulb is connected to a designated terminal on the distribution panel. The ZDJ9 switch machine has positioning terminals 1, 2, and 5 on the distribution panel; and reversing terminals 1, 3, and 4. As shown in Figure 1(a), the lines connecting bulbs A, B, and C represent the A, B, and C phase power supplies. The switch machine is in the positioning state. If the switch is operated, power needs to be supplied to the reversing operation switch, i.e., terminals 1, 3, and 4. Because repeatedly reversing the power supply lines can lead to electric shock, the reversing fault point must be located first, followed by the positioning fault point. As shown in Figure 1(a), the three 220V power supplies for bulbs A, B, and C are connected to positions F1-405-3, F1-405-4, and F1-405-1 in the distribution cabinet, which constitute the power supply for the reversing operation. When moving terminals, the circuit breaker must be de-energized in the indoor combination cabinet to ensure safety; that is, RD1, RD2, and RD3 on the left side of Figure 1(a) are in the disconnected state.

[0032] As one or more implementation methods, when starting to locate the fault, the circuit breaker is closed and the turnout is operated in the reverse position. In Figure 1(a), 1DQJ and 1DQJF will momentarily lift, causing 2DQJ to quickly reverse its polarity. Phase A power is transmitted to F1-405-3 via 121 / 123;

[0033] As one or more implementation methods, the B-phase power supply is transmitted to F1-405-4 through the 111 / 113 contacts of 2DQJ;

[0034] As one or more implementation methods, the C-phase power supply is transmitted to F1-405-1 through the 12 / 11 contacts of 1DQJ; although the 12 / 11 contacts of 1DQJ are not fully drawn, this is a standard graphic and terminology for railway signaling systems, namely the first set of front contacts (12 / 11).

[0035] like Figure 3 As shown, determining the location of the fault point by detecting whether the indicator lights connected to designated terminals of multiple branch circuit boards are lit in each phase circuit specifically includes:

[0036] When the indicator light is connected to the junction box terminal, determine whether the indicator light is lit. If it is, there is no fault point in the line from the junction box terminal to the neutral terminal; otherwise, connect the indicator light to the side terminal of the assembly.

[0037] When the indicator light is connected to the side terminal of the assembly, determine whether the indicator light is lit. If it is, modify the wiring from the distribution panel to the assembly and reconnect the indicator light to the distribution panel terminal; otherwise, connect the indicator light to the designated terminal of the second turnout start relay.

[0038] When the display lamp is connected to the second switch starting relay, it is determined whether the display lamp is bright. If yes, the internal and external wiring is modified or replaced, and the display lamp is reconnected to the combination side terminal. Otherwise, the display lamp is connected to the specified terminal of the first switch starting relay.

[0039] If the display lamp is bright after being reconnected to the combination side terminal, there is no fault point in the line from the combination side terminal to the zero line terminal.

[0040] When the display lamp is connected to the specified terminal of the first switch starting relay, it is determined whether the display lamp is bright. If yes, the contact wiring is modified or the second switch starting relay is replaced, and the display lamp is reconnected to the second switch starting relay. Otherwise, the display lamp is connected to the specified terminal of the phase failure protector.

[0041] If the display lamp is bright after being reconnected to the specified terminal of the second switch starting relay, there is no fault point in the line from the specified terminal of the second switch starting relay to the zero line terminal.

[0042] When the display lamp is connected to the specified terminal of the phase failure protector, it is determined whether the display lamp is bright. If yes, the contact wiring is modified or the first switch starting relay is replaced, and the display lamp is reconnected to the specified terminal of the first switch starting relay. Otherwise, the internal and external wiring of the phase failure protector is modified or replaced, and the display lamp is reconnected to the specified terminal of the phase failure protector.

[0043] If the display lamp is bright after being reconnected to the specified terminal of the first switch starting relay, there is no fault point in the line from the specified terminal of the first switch starting relay to the zero line terminal.

[0044] As one or more embodiments, if all three bulbs are bright in the A, B, C phase line connection position in FIG. 1(a), it indicates that the indoor control circuit has no problem in the reverse position operation, and the positioning (terminals 1, 2, 5 in the figure) is connected for finding test. In this embodiment, A, B, C phases are processed respectively. At this time, B, C bulbs are bright for one second and then extinguished, and A bulb is always not bright, as shown in FIG. 2(a).

[0045] Step (11): disconnect the circuit breaker, do not move the F1-405-4 / F1-405-1 connection in the B, C bulbs, and change the F1-405-3 terminal position corresponding to the A bulb to the corresponding combination side 05-3. Close the circuit breaker, re-operate the switch to the positioning, and then to the reverse position.

[0046] Step (12): If A bulb is still not bright at this time, the previous operation method needs to be continued, and the A phase line is continued to move to the 123 contact in 2DQJ according to FIG. 2(a).

[0047] Step (13): If the A bulb is on and the three bulbs are on at this time, it means that the fault point is between the 123 combination side 05-3 in the 2DQJ, as shown in the dashed line in Figure 2(a).

[0048] Step (14): Turn off the circuit breaker and check the wiring here. First check if the 05-3 rear is misconnected. There are 18 terminals in the side terminal column, and each terminal column has three columns, which can easily cause the entire terminal to be misplaced.

[0049] Step (15): Check the 123 terminals in the 2DQJ to see if they are also misconnected. If both terminals are correct, the line should be checked for conduction.

[0050] Step (16): Pull out the 2DQJ from the combination position; pull out the 05-3 outside line on the combination side, that is, the right side of the combination side 05-3 in Figure 2(a). If it does not pass the conduction test, replace the power line.

[0051] Step (17): Restore the 2DQJ relay and restore the 05-3 wiring.

[0052] Step (18): Connect the A phase line to the 05-3 terminal, close the circuit breaker, and retest. At this time, the three bulbs should light up simultaneously.

[0053] In summary, the fault point here can be one of three cases: first, the side terminal wiring is misconnected; second, the relay rear terminal wiring is misconnected; third, the line wiring is damaged and needs to be replaced.

[0054] As one or more embodiments, three bulbs are connected to the A, B, and C phase wiring positions in Figure 1(a), and this embodiment processes A, B, and C phases with faults. The above analyzes the troubleshooting method when the fault point is in the A phase, and the following analyzes the troubleshooting method when the fault point is in the B phase. At this time, the A and C bulbs light up for one second and then go out, and the B bulb does not light up, as shown in Figure 2(b).

[0055] Step (21): Turn off the circuit breaker, do not move the F1-405-3 / F1-405-1 connection in the A and C bulbs, and change the F1-405-4 terminal position corresponding to the B bulb to the corresponding combination side 05-4. Close the circuit breaker, re-operate the switch to the position, and then to the reverse position.

[0056] Step (22): If the B bulb is still not lit, continue the previous operation method, then according to the B phase line in Fig. 2(b), continue to move forward to the 1 position of the coil of DBJ; if it is still not lit, continue to move forward to the 113 contact point in 2DQJ; if it is still not lit, continue to move forward to the 113 contact point in 2DQJ; if it is still not lit, continue to move forward to the 11 contact point in 1DQJF.

[0057] Step (23): If the B bulb is lit at this time, and the three bulbs are always in the lit state, it means that the fault point is between the middle contact point in 1DQJF and the 111 contact point in 2DQJ, as shown by the dashed line route to the left of 111 in Fig. 2(b).

[0058] Step (24): Turn off the circuit breaker, pull out the 1DQJF and 2DQJ relays, and check and conduct a test on the circuit.

[0059] Step (25): It is possible that the wiring of the relays behind the terminal is incorrect; it is also possible that the wiring of the circuit is damaged and needs to be replaced. After checking item by item, retest.

[0060] Step (26): Start from the 11 contact point in 1DQJF in Fig. 2(b) and test the light on or off item by item from the right terminal position of the drawing.

[0061] As one or more embodiments, three bulbs are connected at the A, B, and C phase line connection positions in Fig. 1(a), and in this embodiment, A, B, and C phases are faulty. The above analyzes the finding method when the fault point is in A and B phases, and the following analyzes the finding method when the fault point is in C phase. At this time, the A and B bulbs are lit for one second and then extinguished, and the C bulb is always not lit, as shown in Fig. 2(c).

[0062] Step (31): Turn off the circuit breaker, do not move the F1-405-3 / F1-405-4 connection of the A and B bulbs, change the F1-405-1 terminal position corresponding to the C bulb to the corresponding combination side 05-1, close the circuit breaker, re-operate the turnout to the positioning, and then to the reverse position.

[0063] Step (32): If the C bulb is still not lit at this time, continue the previous two operation methods, that is, according to the C phase line in Fig. 2(c), continue to move forward to the 11 contact point position of 1DQJ; if it is still not lit, continue to move forward to the 12 contact point in 1DQJ.

[0064] Step (33): If the C bulb is lit at this time, and the three bulbs are always in the lit state, it means that the fault point is between the first group of contact points (11 and 12) in 1DQJ, as shown by the dashed line route of the lower 1DQJ position in Fig. 2(c).

[0065] Step (34): disconnect the circuit breaker, check the contacts, and conduct a test.

[0066] Step (35): there may be a wiring error in the relay rear terminal, or the contacts may be damaged and need to be replaced. After checking each item, retest.

[0067] Step (36): after confirming that there is no error in the relay rear terminal wiring, replace the new 1DQJ, close the circuit breaker, and test.

[0068] Step (37): from the dashed line contacts in the 1DQJ of Figure 2(c), retest the light on or not in the terminal position to the right of the drawing. Similarly, until all three lights are on in the distribution box position.

[0069] This embodiment is described by taking the reverse position operating turnout and 3,4,1 power supply as an example. When the positioning operating turnout, 2,5,1 power supply is used to find the fault point, it is similar and will not be repeated.

[0070] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for quickly finding a fault point in a multi-machine traction electric switch machine circuit, characterized in that, The utility model relates to a circuit detection board, which is provided with three display lamps of the same polarity connected in series; when the circuit detection board is used to find a fault point, the display lamps are connected to different phase circuits of a multi-machine traction electric switch circuit, and the position of the fault point is determined by detecting whether the display lamps connected to specified terminals of multiple distribution boxes are bright in each phase circuit; one display lamp is connected to one phase circuit of the multi-machine traction electric switch circuit. When the circuit detection board is used to find a fault point, the same polarity of each display lamp is connected to a zero line terminal, and the other polarity of each display lamp is respectively connected to a specified terminal of a distribution box. The position of the fault point is determined by detecting whether the display lamps connected to specified terminals of multiple distribution boxes are bright in each phase circuit, and the method specifically comprises the following steps: When the display lamp is connected to a terminal of a distribution box, it is determined whether the display lamp is bright; if yes, there is no fault point in the line from the terminal of the distribution box to the zero line terminal; otherwise, the display lamp is connected to a specified terminal of a combination side surface. When the display lamp is connected to the specified terminal of the combination side surface, it is determined whether the display lamp is bright; if yes, the line between the distribution box and the combination is modified, and the display lamp is reconnected to the terminal of the distribution box; otherwise, the display lamp is connected to a specified terminal of a second switch starting relay. When the display lamp is connected to the specified terminal of the second switch starting relay, it is determined whether the display lamp is bright; if yes, the line between the combination and the outside is modified, and the display lamp is reconnected to the side surface of the combination; otherwise, the display lamp is connected to a specified terminal of a first switch starting repeating relay. If the display lamp is bright after the display lamp is reconnected to the side surface of the combination, there is no fault point in the line from the side surface of the combination to the zero line terminal.

2. The method for quickly finding the fault point of the multi-machine traction electric switch machine circuit according to claim 1, characterized in that, When the display lamp is connected to the specified terminal of the first switch starting repeating relay, it is determined whether the display lamp is bright; if yes, the line between the contact point and the second switch starting relay is modified, and the display lamp is reconnected to the second switch starting relay; otherwise, the display lamp is connected to a specified terminal of a phase failure protector.

3. The method for quickly finding the fault point of the multi-machine traction electric switch machine circuit according to claim 1, characterized in that, If the display lamp is bright after the display lamp is reconnected to the specified terminal of the second switch starting relay, there is no fault point in the line from the specified terminal of the second switch starting relay to the zero line terminal.

4. The method for quickly finding the fault point of the multi-machine traction electric switch machine circuit according to claim 3, characterized in that, When the display lamp is connected to the specified terminal of the phase failure protector, it is determined whether the display lamp is bright; if yes, the line between the contact point and the first switch starting repeating relay is modified, and the display lamp is reconnected to the specified terminal of the first switch starting repeating relay; otherwise, the line between the inside and the outside of the phase failure protector is modified, and the display lamp is reconnected to the specified terminal of the phase failure protector.

5. The method for quickly finding the fault point of the multi-machine traction electric switch machine circuit according to claim 3, characterized in that, If the display lamp is bright after the display lamp is reconnected to the specified terminal of the first switch starting repeating relay, there is no fault point in the line from the specified terminal of the first switch starting repeating relay to the zero line terminal.

6. The method for quickly finding the fault point of the multi-machine traction electric switch machine circuit according to claim 5, characterized in that, ​

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