Production load test platform for Myanmar local locomotive

Abstract

The invention provides a Burmar local locomotive production load test platform, which is applied to Burmar regions and comprises a water resistance load serving as power consumption of an internal combustion locomotive, a console, a shunt box and a circuit. The water resistance load is groove-shaped; the water resistance load comprises a fixed polar plate, a liftable polar plate, a water tank, a lifting mechanism, a control motor and a fixed connection mechanism. A control motor of the water resistance load adopts variable-frequency speed regulation; a cold water inlet valve and an external interface are arranged at the lower part of the water resistance load; a high-temperature water overflow outlet is formed in the upper part of the water tank; a polar plate thermal imaging over-temperature early warning system is arranged at the high-temperature water overflow water outlet; the console is connected with a liftable polar plate of the water resistance load through a control line; a cable bracket and a busbar bracket are laid on the protection control line of the lifting polar plate; and a connecting line between the console and the diverter box. The invention has the advantages of reasonable structural design, high manufacturing precision, sufficient static and dynamic rigidity, and good use performance under high-temperature and high-humidity conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of load test platforms, and in particular to a load test platform for localized locomotive production in Myanmar. Background Art

[0002] As the diesel engine of the main generator power system of diesel locomotives, it is now not only required to generate greater power, but its operating environment has also become more severe as the locomotive speed increases, which increases the frequency of locomotive maintenance. Therefore, it is particularly important to inspect and adjust the various parameters of the diesel engine-main generator system. At present, water resistance test equipment is a necessary equipment for most domestic locomotive depots to detect the power system of diesel locomotives. The system has the advantages of small investment scale, short construction period, multiple applicable models, and continuously adjustable load. Newly built diesel locomotives must undergo water resistance tests after final assembly.

[0003] Myanmar has a tropical monsoon climate with high temperatures and heavy rains throughout the year. Existing water resistance test equipment in China cannot adapt to the local high humidity and high temperature environment. A special water resistance load test platform is built for the localized production of Myanmar locomotives. The construction of this platform not only meets the load test requirements of the existing CKD7B diesel locomotives produced locally at the Naypyidaw Locomotive Factory in Myanmar, but also leaves sufficient room for expansion and debugging for the load test of diesel locomotives with higher power in the future. Summary of the invention

[0004] According to the technical problems mentioned in the above background technology, a localized locomotive production load test platform for Myanmar is provided.

[0005] The technical means adopted by the present invention are as follows:

[0006] A localized locomotive production load test platform for Myanmar, which is used in Myanmar, includes: a water resistance load as a power consumption of a diesel locomotive, a control console, a shunt box and a line;

[0007] The water resistance load is a trough type; the water resistance load comprises: a fixed plate, a liftable plate, a water trough, a lifting mechanism, a control motor and a fixed connection mechanism; the control motor of the water resistance load is variable frequency speed regulation;

[0008] A cold water inlet valve and an external interface are provided at the lower part of the water resistance load, and a high-temperature water overflow outlet is provided at the upper part of the water tank; a plate thermal imaging over-temperature warning system is provided at the high-temperature water overflow outlet;

[0009] The control console is connected to the liftable plate of the water resistance load through a control line; the protection control line of the liftable plate is laid along the cable bracket and the busbar bracket; the connection line between the control console and the diverter box.

[0010] Furthermore, the maximum temperature of the high temperature water is 100°C.

[0011] Furthermore, the console is a piano-type structure.

[0012] Furthermore, the table top of the control console is raised, and display instruments for observing electrical parameters during testing and operating buttons for raising and lowering the control plate for load control during locomotive testing are arranged on the raised table top; a control system and protective devices are also arranged inside the control console.

[0013] Furthermore, the protection device includes: a shunt FL2, a power protection switch, a fuse, a contactor and wiring for controlling the forward and reverse rotation of the motor for controlling the lifting and lowering of the electrode plate; the power protection switch is connected to the power supply, and then connected to the fuse, and then to the shunt FL2, and finally connected to the contactor for the forward and reverse rotation of the motor.

[0014] Furthermore, the diverter box is a structure with an openable door; a main diverter FL1 with a load circuit of 8000A / 75mV is arranged in the diverter box; and two ends of the diverter are connected by a load cable.

[0015] Furthermore, the diverter box is arranged on the wall below the control room and the locomotive door passage.

[0016] Furthermore, a test line connecting the console to the locomotive and a control line to the water resistance tank are arranged in the diverter box.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) The present invention meets the load test requirements of the existing design of CKD7B diesel locomotives produced locally in Myanmar Naypyidaw Locomotive Factory. It has a reasonable structural design, high manufacturing precision, sufficient static and dynamic stiffness, good performance under high temperature and high humidity conditions, strong anti-interference ability, and is suitable for mass production operations. The test bench is easy to use, operate and maintain, and has low operating and maintenance costs.

[0019] (2) The cooling system adopts a convection cooling system. Compared with the traditional liquid cooling system that removes heat through liquid circulation, the convection cooling system uses air flow to remove heat. It has a simple structure and low cost. This system uses the natural flow of external air for cooling and does not require additional energy input. Therefore, it is very suitable for some occasions with low energy consumption requirements. It can achieve more efficient cooling effects, especially when the equipment is running at high load. The overall heat transfer coefficient can be improved through rapid air circulation, thereby improving the performance of the system.

[0020] (3) The water tank adopts melting welding technology, which avoids the crack problem that is easy to occur during bonding and further improves the high temperature resistance of the equipment.

[0021] (4) The water tank is made of high-temperature alloy material. The imported polypropylene material used has good heat resistance and can be used for a long time in a high temperature environment below 100 degrees. Specifically, the melting point of polypropylene is 160-175℃ and the decomposition temperature is 350℃. This means that under normal use conditions, the polypropylene material can withstand higher temperatures without decomposition or damage.

[0022] (5) The present invention provides a plate thermal imaging over-temperature warning system to prevent excessive temperature and instability of the cross-section of the plate in contact with the water surface, thereby solving the problem of power fluctuation.

[0023] (6) The present invention is the first to perform variable frequency speed regulation on the lifting motor on a test bench, which can better achieve fine power regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is a flow chart of the plate thermal imaging detection over-temperature warning system of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] like Figure 1 As shown, the present invention provides a localized locomotive production load test platform for Myanmar, which is used in Myanmar. The entire water resistance test bench should be composed of a water resistance load as the power consumption of the diesel locomotive, a control console, a shunt box, a line and other parts.

[0029] The water resistance load (trough type) consists of fixed plates, liftable plates, water tanks, lifting mechanisms (with limiters), control motors, and related fixed connection mechanisms (parts). The lower part of the water tank is equipped with a cold water inlet valve and an external interface, and the upper part of the water tank is equipped with a high-temperature water overflow outlet (maximum water temperature 100°C). A plate thermal imaging over-temperature warning system is set here to prevent the temperature from being too high, and the cross-section of the plate in contact with the water surface is unstable, causing power fluctuation problems. The control line from the control console to the water resistance tank plate lifting motor and the protection control line for the plate lifting can be laid along the cable bracket and busbar bracket, and the wall penetration should be well protected and fixed. The test line connecting the console instrument to the locomotive can be transitioned in the shunt box, and the connection between the console and the shunt box must also be well protected and fixed through the wall. Leave a length (about 10m) for the test connection with the locomotive, which can be stored in the shunt box at ordinary times and taken out and connected to the locomotive during the test. In order to enable the speed regulation function of the plate lifting of the water resistance tank, the lifting motor was frequency-controlled for the first time on this test bench, which can better achieve fine power regulation.

[0030] As a preferred embodiment, in the present application, the control console adopts a piano-type structure, and the raised part of the table top is installed with display instruments (for observing electrical parameters during testing) and operating buttons for controlling the lifting of the pole plates (for load control during locomotive testing) and other components. The control system and protection devices (including shunt FL2, power protection switch, fuse, contactors and wiring for controlling the forward and reverse rotation of the motor for controlling the lifting of the pole plates, etc.) are installed inside the console.

[0031] As a preferred embodiment, in the present application, the shunt box adopts an openable door structure, and a main shunt FL1 with a load circuit of 8000A / 75mV is installed inside, and the two ends of the shunt are connected by load cables. The shunt box is installed on the wall below the door passage between the control room and the locomotive, and the test line connecting the console and the locomotive and the control line to the water resistance tank can be transferred in the box.

[0032] Preferably, the line part consists of busbars, cables, brackets, wire clamps, etc. The distance between the outer wall of the control room and the side of the water resistance trough is about 5m. A copper busbar (fixed with brackets and porcelain bottles, and the positive and negative busbars are painted with red and yellow protective paints to distinguish them) is used as the circuit connection. The soft connection uses locomotive cables, and the current carrying capacity is determined according to the needs of the existing locomotives. The negative pole uses cables (6 185mm2) to connect the copper busbar to the main shunt, with a length of about 12m. Cable brackets and wire clamps can be used to lay them along the outer wall of the control room. Locomotive soft cables (6 185mm2) are used from the shunt to the locomotive electrical cabinet. The length is about 10m and is not fixed. The positive pole is directly connected from the copper busbar, and 6 185mm2 soft cables are also used to directly connect to the locomotive electrical cabinet (length is about 22m). The section from the copper busbar to the shunt box is also fixed along the outer wall of the control room with cable brackets and wire clamps, and the rest of the part is not fixed. The unfixed parts of the positive and negative cables are usually stored on the outer wall of the control room and connected again during the locomotive test. All cables are equipped with terminals for connection to the locomotive and are clearly marked with positive and negative poles.

[0033] The total current of the cable part is calculated as 4080A, and the same cables (6 185mm2) are used as the locomotive wiring. For the copper busbar part, considering the possible need to increase power in the future and the temperature, humidity and other climatic conditions in Myanmar, a certain margin is left, and the current carrying capacity is considered to be 8000A. At the same time, it is necessary to consider the convenience of wiring when the cables are increased in the future, and reserve wiring points are reserved at the connection between the copper busbar and the cable.

[0034] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0035] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0036] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0037] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0038] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0039] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A localized locomotive production load test platform for Myanmar, used in Myanmar, characterized in that: include: Water resistance loads, control consoles, shunt boxes, and wiring as power consumption for diesel locomotives; The water resistance load is a groove type; The water resistance load comprises: a fixed plate, a liftable plate, a water tank, a lifting mechanism, a control motor and a fixed connection mechanism; the control motor of the water resistance load is variable frequency speed regulation; A cold water inlet valve and an external interface are provided at the lower part of the water resistance load, and a high-temperature water overflow outlet is provided at the upper part of the water tank; a plate thermal imaging over-temperature warning system is provided at the high-temperature water overflow outlet; The control console is connected to the liftable plate of the water resistance load through a control line; the protection control line of the liftable plate is laid along the cable bracket and the busbar bracket; the connection line between the control console and the diverter box.

2. A localized locomotive production load test platform for Myanmar according to claim 1, characterized in that: The maximum temperature of the high temperature water is 100°C.

3. The localized locomotive production load test platform for Myanmar according to claim 1, characterized in that: The control console is a piano-type structure.

4. A localized locomotive production load test platform for Myanmar according to claim 1 or 3, characterized in that: The table top of the control console is raised, and display instruments for observing electrical parameters during testing and operating buttons for raising and lowering the control plate for load control during locomotive testing are arranged on the raised table top; a control system and protective devices are also arranged inside the control console.

5. A localized locomotive production load test platform for Myanmar according to claim 4, characterized in that: The protection device includes: a shunt FL2, a power protection switch, a fuse, a contactor and wiring for controlling the forward and reverse rotation of the motor for lifting and lowering the electrode plate; the power protection switch is connected to the power supply, and then to the fuse, and then to the shunt FL2, and finally to the contactor for the forward and reverse rotation of the motor.

6. The localized locomotive production load test platform for Myanmar according to claim 1, characterized in that: The shunt box is a structure with an openable door; a main shunt FL1 with a load circuit of 8000A / 75mV is arranged in the shunt box; and both ends of the shunt are connected by a load cable.

7. A localized locomotive production load test platform for Myanmar according to claim 1 or 6, characterized in that: The diverter box is arranged on the wall below the control room and the locomotive door passage.

8. The localized locomotive production load test platform for Myanmar according to claim 1, characterized in that: The test line connecting the console with the locomotive and the control line to the water resistance tank are arranged in the diverter box.

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