CN215599856U - Single-rail vehicle SIV auxiliary device maintenance training test bench - Google Patents

Abstract

The utility model provides a maintenance training test bed for a single-rail vehicle SIV auxiliary device, which comprises a power supply cabinet, a voltage regulator, a rectifier transformer, a rectifier cabinet, a test installation cabinet, a load cabinet and an operation platform, wherein the test installation cabinet is used for accommodating the SIV auxiliary device, the power supply cabinet, the voltage regulator, the rectifier transformer, the rectifier cabinet, the SIV auxiliary device and the load cabinet are sequentially and electrically connected, and the power supply cabinet, the voltage regulator, the rectifier transformer, the rectifier cabinet, the SIV auxiliary device and the load cabinet are also respectively and electrically connected with the operation platform. The device tests a system consisting of a main loop of the SIV and a control circuit thereof, improves the safety, reliability and working efficiency of SIV maintenance, and can avoid SIV faults and rescue conditions caused by improper component quality and staff maintenance, thereby playing a critical role in train safety operation; and the fault reason of the SIV can be quickly judged, and a large amount of time and labor can be saved.

Description

Single-rail vehicle SIV auxiliary device maintenance training test bench

Technical Field

The utility model relates to the technical field of power supply testing, in particular to a maintenance training test bed for a single-rail vehicle SIV auxiliary device.

Background

An auxiliary power supply apparatus (SIV) for rail transit is a power supply device that supplies control power to an on-board air conditioning system, an air compressor, a storage battery, lighting, train control equipment, and other auxiliary equipment, and is one of the core components of a monorail car. The control principle adopts an IGBT device as a switching element, and converts DC1500V into AC380V power supply through a PWM control mode and a filter circuit.

Because SIV input voltage is high, IGBT trigger pulse frequency is high, do not have corresponding maintenance test platform under the car, can't maintain and test, handle some soft trouble of SIV on working quite difficultly. Because the SIV auxiliary device does not have a maintenance test platform, staff training can not be effectively carried out.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the maintenance training test bed for the auxiliary device of the single-rail vehicle SIV provided by the utility model solves the technical problem that the existing auxiliary power supply device (SIV) is difficult to maintain and test under the vehicle due to the lack of a corresponding maintenance test platform.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model provides a monorail car SIV auxiliary device maintenance training test bench, includes power cabinet, voltage regulator, rectifier transformer, rectifier cabinet, experimental installation cabinet, load cabinet and operation panel, experimental installation cabinet is used for settling SIV auxiliary device, power cabinet, voltage regulator, rectifier transformer, rectifier cabinet, SIV auxiliary device and load cabinet electricity in proper order are connected, power cabinet, voltage regulator, rectifier transformer, rectifier cabinet, SIV auxiliary device and load cabinet still are connected with the operation panel electricity respectively.

Optionally, the voltage regulator is preferably an oil immersed induction voltage regulator for providing a 0-1800V power supply output.

Optionally, the rectifier transformer is composed of two sets of six-phase rectifier power supplies in which coils in a Y connection and a delta connection are connected in series with a three-phase rectifier bridge.

Optionally, at least a resistive load, an inductive load and an ac contactor for controlling the load power are arranged in the load cabinet.

Optionally, a clamping mechanism is further arranged on the test installation cabinet, and the clamping mechanism comprises a bidirectional screw rod, a sliding block, a pressing block and a compression spring; the top surface of the test installation cabinet is provided with four sliding grooves, the four sliding grooves correspond to four corners of an SIV auxiliary power supply device one by one, the two-way screw rod is arranged below the two sliding grooves in the length direction of the test installation cabinet, and two ends of the two-way screw rod respectively penetrate through the side wall of the test installation cabinet and are rotatably connected with the test installation cabinet; every equal sliding connection has the sliding block in the spout, the bottom and the two-way lead screw threaded connection of sliding block, sliding block still is equipped with the compact heap towards SIV auxiliary power supply device one side, the compact heap also with spout sliding connection, press from both sides between compact heap and the sliding block and be equipped with compression spring.

Optionally, the sliding block is provided with a first guide rod towards one side of the pressing block, the pressing block is provided with a second guide rod towards one side of the sliding block, and the two ends of the compression spring are respectively sleeved on the peripheries of the first guide rod and the second guide rod.

Optionally, the outer wall of the first guide rod is provided with a first pin hole, a limit pin is inserted into the first pin hole, and the limit pin is clamped between any two adjacent rings of the compression spring.

Optionally, a quick clamp is arranged on one side of the pressing block.

Optionally, the bidirectional screw rod penetrates through the test installation cabinet and then is fixedly connected with the hand wheel.

According to the technical scheme, the utility model has the beneficial effects that:

the utility model provides a maintenance training test bed for a single-rail vehicle SIV auxiliary device, which comprises a power supply cabinet, a voltage regulator, a rectifier transformer, a rectifier cabinet, a test installation cabinet, a load cabinet and an operation platform, wherein the test installation cabinet is used for accommodating the SIV auxiliary device, the power supply cabinet, the voltage regulator, the rectifier transformer, the rectifier cabinet, the SIV auxiliary device and the load cabinet are sequentially and electrically connected, and the power supply cabinet, the voltage regulator, the rectifier transformer, the rectifier cabinet, the SIV auxiliary device and the load cabinet are also respectively and electrically connected with the operation platform. The device tests a system consisting of a main loop of the SIV and a control circuit thereof, the power supply of a main loop test power supply consists of two groups of six-phase rectifier power supplies which are connected in series with a Y-delta connection three-compartment rectifier bridge, the SIV is tested by a test bed in load, no-load, half-load, full-load, overload and the like, and the test result is displayed and recorded by a computer. The safety, the reliability and the working efficiency of the SIV maintenance are improved, the occurrence of SIV faults and even rescue conditions caused by improper maintenance of elements and staff can be avoided, and therefore the critical effect is achieved on safe operation of the train. And the fault reason of the SIV can be quickly judged, and a large amount of time and labor can be saved.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic perspective view of a monorail car SIV auxiliary device maintenance training test bed;

FIG. 2 is a schematic perspective view of another embodiment of a stand for a maintenance training of a SIV auxiliary device;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is an exploded view of FIG. 2;

reference numerals:

1-a power supply cabinet, 2-a voltage regulator, 3-a rectifier transformer, 4-a rectifier cabinet, 5-a test installation cabinet, 6-a load cabinet, 7-an operation table and 8-an SIV auxiliary power supply device;

51-sliding groove, 91-bidirectional screw rod, 92-sliding block, 93-pressing block, 94-compression spring, 95-limiting pin, 96-quick clamp and 97-hand wheel;

921-first guide bar, 922-first pin hole, 931-second guide bar, 932-second pin hole.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1, the test bed for maintaining and training the auxiliary device of the monorail vehicle SIV provided by the utility model comprises a power cabinet 1, a voltage regulator 2, a rectifier transformer 3, a rectifier cabinet 4, a test installation cabinet 5, a load cabinet 6 and an operation table 7, wherein the test installation cabinet 5 is used for accommodating the auxiliary device of the SIV, the power cabinet 1, the voltage regulator 2, the rectifier transformer 3, the rectifier cabinet 4, the auxiliary device of the SIV and the load cabinet 6 are sequentially electrically connected, and the power cabinet 1, the voltage regulator 2, the rectifier transformer 3, the rectifier cabinet 4, the auxiliary device of the SIV and the load cabinet 6 are also electrically connected with the operation table 7 respectively. The device tests a system consisting of a main loop of the SIV and a control circuit thereof, the power supply of a main loop test power supply consists of two groups of six-phase rectifier power supplies which are connected in series with a Y-delta connection three-compartment rectifier bridge, the SIV is tested by a test bed in load, no-load, half-load, full-load, overload and the like, and the test result is displayed and recorded by a computer. The safety, the reliability and the working efficiency of the SIV maintenance are improved, the occurrence of SIV faults and even rescue conditions caused by improper maintenance of elements and staff can be avoided, and therefore the critical effect is achieved on safe operation of the train. And the fault reason of the SIV can be quickly judged, and a large amount of time and labor can be saved.

Specifically, the power cabinet 1 is internally provided with electrical elements such as an air switch, a contactor, a fuse and the like, and comprises electrical elements controlled by a main loop and electrical elements of a protection loop; the pressure regulator 2 is preferably an oil-immersed induction pressure regulator 2, and is used for electrically regulating pressure so as to provide 0-1800V power supply output; the rectifier transformer 3 is composed of two groups of six-phase rectifier power supplies which are respectively in Y connection and delta connection and are formed by matching coils with three-phase rectifier bridges in series; the rectifier cabinet 4 is provided with a rectifier consisting of an axial flow fan, 12 rectifier diodes and 12 quick fuses. A direct current contactor, an integrated power supply and the like are also arranged; the load cabinet 6 is at least internally provided with a resistive load, an inductive load and an alternating current contactor for controlling the load power; the operating table 7 is internally provided with electrical elements such as an industrial personal computer host, a PLC, a voltage regulator 2 and the like, a panel is embedded with a computer display, and the panel is also provided with a display instrument, a control button, a change-over switch, a signal lamp and the like.

When the test is carried out, a power supply cabinet provides a main circuit power supply, a load cabinet adjusts load current, and a PLC acquires control signals and a computer displays and records test data. Thus, the test stand has the following functions:

firstly, stepless voltage regulation function: the voltage of the voltage regulator is lifted by making the voltage regulating motor rotate forwards or reversely through the two interlocked alternating current contactors, so that the primary voltage of the rectifier transformer is regulated, the secondary voltage of the rectifier transformer is changed, the output voltage of the rectifier is changed, and the purpose of regulating the main voltage is achieved. The voltage and current of the main loop can be displayed through a dial plate, and the data of the main loop is input into a computer;

II, a load test function: the load is formed by connecting a resistor and a reactor in series, and is connected with an adjustable resistor in series, so that the load current can be finely adjusted. 1. During the no-load test, the current in the circuit is only the no-load current of the SIV output rectifier transformer. 2. During half-load test, the rectifier transformer adopts a Y-shaped connection method, the phase current is line current, and the current value is as follows: 76a. load impedance per phase is: 2.896 ohms, resistance: 2.794 ohms. 3. During a full-load test, the current value of the rectifier transformer is as follows: 76a. load impedance per phase is: 1.448 ohms, power factor at full load 0.85, inductive reactance: 0.763 ohms, inductance is: 2.43MH, resistance: 1.231 ohms. 4. During overload test, the time is 1 minute, the SIV output power is 1.5 times of the rated power, and the overload current value is as follows: 228a. load impedance per phase is: 0.965 ohms, power factor 0.85, inductive reactance: 0.508 ohm, inductance: 1.815MH, resistance: 0.820 ohm;

thirdly, power protection function: 1. the main loop of the power supply is protected, and a short-circuit device is adopted to carry out short-circuit and overload protection. Meanwhile, an overcurrent relay is adopted in a loop formed by current mutual inductance to realize overcurrent protection of the main loop. The rectifier diode is provided with a fast fuse and a resistance-capacitance absorption protection; 2. the power supply control loop and the voltage regulation control loop are protected, and short circuit and overload protection are realized on the loops through a fuse and a circuit breaker;

fourthly, protecting the circuit test function, namely disassembling the output end of a main circuit voltage sensor of the SIV device, inputting a direct-current voltage analog network voltage signal of 0-5V, switching on a control power supply, adjusting the voltage value of the direct-current voltage, and observing whether the control signal of the IGBT can normally work;

fifthly, overvoltage test function: 1. the method comprises the steps of simulating an input overvoltage test, increasing the voltage of direct-current voltage when the IGBT works normally, enabling a control electrode signal of the IGBT to be closed, and calculating the transformation ratio of a voltage transformer to obtain the input overvoltage of the SIV device; 2. in the chopping link overvoltage test, corresponding voltage is input at the secondary side of the voltage sensor, so that a control electrode signal of the IGBT is closed, and the chopping link overvoltage value of the SIV device can be obtained by calculating the transformation ratio of the voltage transformer;

sixthly, overcurrent test function: 1. in the chopping link overcurrent test, corresponding voltage is input at the secondary side of the voltage sensor, so that a control electrode signal of the IGBT is turned off, and at the moment, the chopping link overcurrent value of the SIV device can be obtained by calculating the transformation ratio of the voltage transformer; 2. in the alternating current output overcurrent test, corresponding voltages are respectively input to the secondary sides of the current sensors, so that the IGBT control electrode signals are turned off, and the alternating current output overcurrent value of the SIV device can be obtained by calculating the transformation ratio of the current transformer; 3. in the capacitance overcurrent test, corresponding voltage is input at the secondary side of a voltage sensor beside a capacitor, so that a control electrode signal of the IGBT is closed, and at the moment, the chopping link overcurrent value of the SIV device can be obtained by calculating the transformation ratio of the voltage transformer;

seventhly, the power-on checking function of the SIV device after overhauling: after the SIV is overhauled, the high voltage DC1500V is needed to be applied, before the test bench is not completed, the functions can be checked only after the SIV is installed on the vehicle, if the SIV has a fault, the SIV needs to be disassembled, and the time and labor are wasted. After the test bed is completed, each function of the SIV can be detected only by arranging the SIV on the debugging platform, so that the overhauling quality of the SIV is ensured, and a large amount of manpower and material resources are saved.

As a further improvement to the above scheme, in order to avoid potential safety hazards, the SIV auxiliary power supply device 8 needs to be clamped and positioned. Referring to fig. 1 to 4, the test installation cabinet 5 is further provided with a clamping mechanism, and the clamping mechanism includes a bidirectional screw 91, a sliding block 92, a pressing block 93, and a compression spring 94. Specifically, the SIV auxiliary power supply apparatus 8 is in a rectangular parallelepiped shape, and thus the test-mounting cabinet 5 is also provided in a rectangular parallelepiped shape. The top surface of the test installation cabinet 5 is provided with four sliding grooves 51, the four sliding grooves 51 correspond to four corners of the SIV auxiliary power supply device 8 one by one, and the bidirectional screw rods 91 are arranged below the two sliding grooves 51 in the length direction of the test installation cabinet 5, namely, the bidirectional screw rods 91 are provided with a left set and a right set. Two ends of the bidirectional screw rod 91 respectively penetrate through the side wall of the test installation cabinet 5 and are rotatably connected with the test installation cabinet 5, and a bearing with a seat is arranged on the outer side wall of the test installation cabinet 5 through the accessible so as to be used for installing the bidirectional screw rod 91. Each sliding block 92 is connected in each sliding groove 51 in a sliding manner, the bottom end of each sliding block 92 is in threaded connection with the bidirectional screw rod 91, specifically, the bottom end of each sliding block 92 is detachably connected with a nut seat through a bolt, the nut seats are in threaded connection with the bidirectional screw rods 91, and when the bidirectional screw rods 91 are rotated, the nut seats drive the sliding blocks 92 to slide back and forth under the limiting effect of the sliding grooves 51. The sliding block 92 is further provided with a pressing block 93 facing the SIV auxiliary power supply device 8, the pressing block 93 is also in sliding connection with the sliding groove 51, a compression spring 94 is clamped between the pressing block 93 and the sliding block 92, two ends of the compression spring 94 are respectively fixedly connected with the pressing block 93 and the sliding block 92, and the springs are arranged to provide more stable clamping force for the SIV auxiliary power supply device 8 through spring counterforce. By arranging the bidirectional screw 91, when the screw rotates, the two sliding blocks 92 on the screw can move towards or away from each other, so as to clamp and release the SIV auxiliary power supply device 8. In one embodiment, the bidirectional screw 91 penetrates through the test installation cabinet 5 and then is fixedly connected with the hand wheel 97, and when the SIV auxiliary power supply device 8 is hoisted to the top surface of the test installation cabinet 5, an operator can rotate the hand wheel 97 to drive the bidirectional screw 91 to rotate, so that the auxiliary power supply device is clamped. In particular, if a rotating hand wheel 97 is adopted, the bidirectional screw rod needs to have self-locking capability so as to realize stable clamping. Obviously, a chain wheel or a gear can be used for replacing a rotating hand wheel, and the rotating hand wheel is connected with a motor in a transmission way through chain transmission or gear transmission so as to replace manual operation, and stable clamping is realized by means of self-locking or interlocking of the motor.

As a further improvement to the above scheme, since the pressing block 93 clamps the SIV auxiliary power supply device 8 in the length direction, a quick clamp 96 may be further disposed on one side of the pressing block 93, and the SIV auxiliary power supply device 8 is clamped in the width direction by the quick clamp 96.

As a further improvement to the above scheme, the sliding block 92 is provided with a first guide bar 921 towards the side of the pressing block 93, the pressing block 93 is provided with a second guide bar 931 towards the side of the sliding block 92, two ends of the compression spring 94 are respectively sleeved on the peripheries of the first guide bar 921 and the second guide bar 931, and the spring extension and retraction direction is guided by the guide bars. Preferably, the outer wall of the first guide bar 921 is provided with a first pin hole 922, a limit pin 95 is inserted into the first pin hole 922, the limit pin 95 is clamped between any two adjacent rings of the compression spring 94, and the limit pin 95 transmits pulling force or pushing force, so that the compression spring 94 is fixedly connected with the sliding block 92 in a detachable manner, and the spring replacement is facilitated. Similarly, a second pin hole 932 is formed in the outer wall of the second guide rod 931, a limit pin 95 is also inserted into the second pin hole 932, and the limit pin 95 is clamped between any two adjacent rings of the compression spring 94. Wherein, the spacer pin 95 also can adopt stop screw, and second pinhole 932 adopts the screw hole, through threaded connection in order to prevent that stop screw is not hard up to drop.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (9)

1. The utility model provides a monorail car SIV auxiliary device maintenance training test bench, a serial communication port, including power cabinet (1), voltage regulator (2), rectifier transformer (3), rectifier cabinet (4), experimental installation cabinet (5), load cabinet (6) and operation panel (7), experimental installation cabinet (5) are used for settling SIV auxiliary device, power cabinet (1), voltage regulator (2), rectifier transformer (3), rectifier cabinet (4), SIV auxiliary device and load cabinet (6) electricity in proper order are connected, power cabinet (1), voltage regulator (2), rectifier transformer (3), rectifier cabinet (4), SIV auxiliary device and load cabinet (6) still are connected with operation panel (7) electricity respectively.

2. Monorail car SIV auxiliary equipment maintenance training test bench of claim 1, characterized in that the voltage regulator (2) is preferably an oil-immersed induction voltage regulator (2) for providing a 0-1800V supply output.

3. The monorail car SIV auxiliary equipment maintenance training test bench of claim 1, characterized in that the rectifier transformer (3) consists of two sets of six-phase rectified power sources with Y-connected and delta-connected coils in series with three-phase rectifier bridges.

4. The monorail car SIV auxiliary equipment maintenance training test stand of claim 1, wherein at least resistive loads, inductive loads and ac contactors for controlling load power are arranged in the load cabinet (6).

5. The monorail car SIV auxiliary equipment maintenance training test bed of any one of claims 1-4, wherein a clamping mechanism is further arranged on the test mounting cabinet (5), and the clamping mechanism comprises a bidirectional screw rod (91), a sliding block (92), a pressing block (93) and a compression spring (94); four sliding grooves (51) are formed in the top surface of the test installation cabinet (5), the four sliding grooves (51) correspond to four corners of the SIV auxiliary power supply device (8) in a one-to-one mode, the two-way screw rods (91) are arranged below the two sliding grooves (51) in the length direction of the test installation cabinet (5), and two ends of each two-way screw rod (91) penetrate through the side wall of the test installation cabinet (5) respectively and are connected with the test installation cabinet (5) in a rotating mode; every equal sliding connection has sliding block (92) in spout (51), the bottom and two-way lead screw (91) threaded connection of sliding block (92), sliding block (92) still are equipped with compact heap (93) towards SIV auxiliary power supply device (8) one side, compact heap (93) also with spout (51) sliding connection, press from both sides between compact heap (93) and sliding block (92) and be equipped with compression spring (94).

6. The monorail car SIV auxiliary device maintenance training test bed of claim 5, wherein the sliding block (92) is provided with a first guide rod (921) towards one side of the pressing block (93), the pressing block (93) is provided with a second guide rod (931) towards one side of the sliding block (92), and two ends of the compression spring (94) are respectively sleeved on the peripheries of the first guide rod (921) and the second guide rod (931).

7. The monorail car SIV auxiliary device maintenance training test bed of claim 6, wherein a first pin hole (922) is formed in the outer wall of the first guide rod (921), a limiting pin (95) is inserted into the first pin hole (922), and the limiting pin (95) is clamped between any two adjacent rings of the compression spring (94).

8. The monorail car SIV auxiliary equipment maintenance training test stand of claim 5, characterized in that the compression block (93) is provided with a quick clamp (96) on one side.

9. The monorail car SIV auxiliary device maintenance training test bed of claim 5, wherein the bidirectional screw rod (91) penetrates through the test installation cabinet (5) and then is fixedly connected with the hand wheel (97).

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