System with expansion brake resistor device in diesel locomotive and use method thereof
阅读说明：本技术 一种内燃机车中具有扩展制动电阻装置的系统及其使用方法 (System with expansion brake resistor device in diesel locomotive and use method thereof ) 是由 温吉斌 赵刚 鲁渝玲 王秀岩 傅鑫 张金阳 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种内燃机车中具有扩展制动电阻装置的系统,包括开关电路、制动电阻装置和扩展制动电阻装置,其中,所述制动电阻装置通过所述开关电路连接至所述中间直流回路,所述扩展制动电阻装置可选择地接入开关电路和所述制动电阻装置。本发明还公开了内燃机车中具有扩展制动电阻装置的系统的使用方法。本发明的一种内燃机车扩展制动电阻装置的接入解决了上述的资源浪费问题,机车仅需配备满足电制动功率的制动电阻装置即可。在进行机车大功率自负荷试验时仅需将扩展制动电阻装置的接入即可增大功率,操作简单。此外,当机车上的制动电阻装置出现故障时,利用本发明的扩展制动电阻装置也可以进行自负荷试验。(The invention discloses a system with an extended brake resistance device in a diesel locomotive, which comprises a switching circuit, the brake resistance device and the extended brake resistance device, wherein the brake resistance device is connected to a middle direct current loop through the switching circuit, and the extended brake resistance device is selectively connected into the switching circuit and the brake resistance device. The invention also discloses a using method of the system with the expanded brake resistor device in the diesel locomotive. The access of the extended brake resistor device of the diesel locomotive solves the problem of resource waste, and the locomotive only needs to be provided with the brake resistor device meeting the electric brake power. When a high-power self-load test of the locomotive is carried out, the power can be increased only by connecting the extension brake resistor device, and the operation is simple. In addition, when the brake resistance device on the locomotive breaks down, the self-load test can be carried out by using the extended brake resistance device.)
1. A system with an extended brake resistor device in a diesel locomotive is characterized by comprising a switching circuit, a brake resistor device and an extended brake resistor device, wherein,
the brake resistor device is connected to the intermediate direct current loop through the switch circuit, and the expanded brake resistor device is selectively connected to the switch circuit and the brake resistor device.
2. The system of claim 1, wherein the extended brake resistor assembly is connected in parallel with the brake resistor assembly.
3. The system of claim 2, wherein the switching circuit includes a first contactor and a second contactor disposed on opposite sides of the brake resistor arrangement.
4. The system of claim 3, wherein the extended brake resistor unit is connected in parallel with the brake resistor unit and the second contactor, and wherein the extended brake resistor unit is connected in series with the first contactor.
5. The system of claim 3, wherein the extended brake resistor device is a separately externally located brake resistor device.
6. The system with extended brake resistance device in a diesel locomotive according to any of claims 1-5, characterized in that the extended brake resistance device comprises a resistance band and a cooling fan.
7. A diesel locomotive comprising a system with extended brake resistance means according to any one of claims 1 to 6.
8. A method of using a system having an extended brake resistor device in a diesel locomotive according to any one of claims 1 to 6, wherein the brake resistor device is connected to the intermediate dc path through a switching circuit when the diesel locomotive is subjected to a high power self-load test and the brake resistor device is normally operated, and the extended brake resistor device is connected to the switching circuit and the brake resistor device; when the switching circuit is switched on, the brake resistor device and the extended brake resistor device consume high voltage electricity on the intermediate direct current loop at the same time.
9. A method of using a system with an extended brake resistor arrangement in a diesel locomotive according to any of claims 1-6, characterized in that when the diesel locomotive is subjected to a high power self-load test and the brake resistor arrangement is faulty, the resistor arrangement is disconnected and the extended brake resistor arrangement is connected to the intermediate dc circuit via a switching circuit; when the switching circuit is switched on, the extended braking resistance device consumes the high voltage on the intermediate direct current loop.
10. Use according to claim 8 or 9, characterised in that the extended brake resistor device is removed from the circuit of the diesel locomotive after the diesel locomotive has completed a high power self-load test.
Technical Field
The invention relates to the technical field of diesel locomotives, in particular to a system with an expansion brake resistor device in a diesel locomotive and a use method thereof.
Background
The brake resistance device is an energy absorption device when a locomotive vehicle traction system performs electric braking and self-load tests.
When the diesel locomotive is electrically braked, a traction motor of the diesel locomotive is in a power generation working condition, kinetic energy and potential energy of the train are converted into electric energy, the electric energy generated by the traction motor is converted into heat energy by a brake resistance device, and the heat energy is blown to the atmosphere by a fan, so that the speed of the locomotive is reduced in a mode of energy consumption conversion.
When the self-load test is carried out, a diesel engine of the diesel locomotive drags the main generator to generate electric energy, and the brake resistance device converts the electric energy generated by the main generator into heat energy for consumption.
The power of the diesel locomotive brake resistor device used for dynamic braking is less than that of the diesel locomotive brake resistor device used for self-load test, and is about 65% of the power of the diesel locomotive brake resistor device used for self-load test.
If the power of the brake resistor device is configured according to the power required by the self-load test of the internal combustion locomotive, the brake resistor device is excessively configured, so that the waste of the space and the cost of the locomotive is caused, and in addition, the self-load test of the locomotive is only used when the locomotive leaves a factory and breaks down, and is rarely used at ordinary times. If the power of the brake resistance device is configured according to the power of dynamic braking of the diesel locomotive, the requirement of the power required by the self-load test when the locomotive leaves a factory and is subjected to troubleshooting cannot be met.
Based on this, the prior art still remains to be improved.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention provide a diesel locomotive, a system having an extended braking resistance device, and a method for using the same.
According to the present invention, there is provided a system having an extended brake resistor device in a diesel locomotive, comprising a switching circuit, a brake resistor device and an extended brake resistor device, wherein,
the brake resistor device is connected to the intermediate direct current loop through the switch circuit, and the expanded brake resistor device is selectively connected to the switch circuit and the brake resistor device.
Further, the extended braking resistance device is connected in parallel with the braking resistance device.
Further, the switching circuit includes a first contactor and a second contactor disposed at both sides of the braking resistance device.
Further, the extension brake resistance device is connected in parallel with the brake resistance device and the second contactor, and the extension brake resistance device is connected in series with the first contactor.
Furthermore, the extension brake resistance device is an independent external brake resistance device.
Further, the extension brake resistance device comprises a resistance band and a cooling fan.
According to the invention, there is also provided a diesel locomotive comprising a system as described above with an extended brake resistance device.
According to the invention, the use method of the system with the expanded brake resistance device in the diesel locomotive is also provided, when the diesel locomotive carries out a high-power self-load test and the brake resistance device works normally, the brake resistance device is connected on the intermediate direct current path through the switch circuit, and the expanded brake resistance device is connected with the switch circuit and the brake resistance device; when the switching circuit is switched on, the brake resistor device and the extended brake resistor device consume high voltage electricity on the intermediate direct current loop at the same time.
According to the invention, the use method of the system with the extended brake resistance device in the diesel locomotive is also provided, when the diesel locomotive carries out a high-power self-load test and the brake resistance device fails, the resistance device is disconnected, and the extended brake resistance device is connected on the intermediate direct current circuit through the switch circuit; when the switching circuit is switched on, the extended braking resistance device consumes the high voltage on the intermediate direct current loop.
Further, after the diesel locomotive completes the high-power self-load test, the expanded brake resistance device is detached from the loop of the diesel locomotive.
By adopting the technical scheme, the invention at least has the following beneficial effects:
in the diesel locomotive, the larger the volume of the brake resistance device with larger power is, the larger the occupied locomotive space is, and the higher the cost is. The diesel locomotive can only carry out high-power self-load tests when the diesel locomotive leaves a factory and fails, and the waste of resources is caused by the fact that a large braking resistance device is equipped for the full-power self-load tests which are used occasionally.
The access of the extended brake resistor device of the diesel locomotive solves the problem of resource waste, and the locomotive only needs to be provided with the brake resistor device meeting the electric brake power. When a high-power self-load test of the locomotive is carried out, the power can be increased only by connecting the extension brake resistor device, and the operation is simple. In addition, when the brake resistance device on the locomotive breaks down, the self-load test can be carried out by using the extended brake resistance device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a circuit topology structure diagram of a diesel locomotive brake resistor device without an extension brake resistor device;
FIG. 2 is a schematic diagram of a system having an extended brake resistance device in a diesel locomotive in accordance with an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a system having an extended brake resistor device in a diesel locomotive according to an embodiment of the present invention.
List of reference numerals
1-diesel engine, 2-main generator, 3-rectifier, 4-intermediate DC loop, 5-traction inverter, 6-traction motor, 7-original switch circuit, 8-brake resistance device, 9-extended brake resistance device, 10-switch circuit, 16-first contactor, 17-second contactor, 181-resistance band, 182-cooling fan, 191-resistance band, 192-cooling fan
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
Fig. 1 shows a topology structure diagram of a circuit of a brake resistor device of a diesel locomotive without an extension brake resistor device, wherein the circuit mainly comprises the following parts: the system comprises a diesel engine 1, a
When the locomotive is electrically braked, the
When the locomotive carries out a high-power self-load test, the diesel engine 1 drags the
The resistance of the
Since the
If the diesel locomotive carries out the configuration of the brake resistance device according to the power of the self-load test, the brake resistance device is excessively configured, so that the waste of the space and the cost of the locomotive is caused, and in addition, the locomotive self-load test is only carried out when the locomotive leaves a factory and has a fault, and is rarely carried out at ordinary times.
If the power of the brake resistor device is configured according to the power of dynamic braking of the diesel locomotive, the requirement of answering the power self-load test when the locomotive leaves a factory and is subjected to troubleshooting cannot be met.
Based on the above, it is proposed to solve the above problem by using an external extended braking resistance device 9.
Referring to fig. 2 and 3, the system with the extended brake resistance device in the diesel locomotive comprises a diesel engine 1, a
When the three-phase direct current traction motor is used, the
The extended brake resistor arrangement 9 is selectively connectable to the
After being connected, the extended braking resistor device 9 shown in fig. 3 is connected in parallel with the
The extended braking resistor device 9 includes a
When the diesel locomotive carries out the self-load test and the power of the brake resistance device 9 is lower than the power required by the self-load test, the extension brake resistance device 9 is connected into the
When the diesel locomotive carries out self-load test and the
In use, a system having an extended brake resistance device in a diesel locomotive:
when the diesel locomotive is in non-electric braking and non-self-load tests, the
When the diesel locomotive is electrically braked, the
As shown in fig. 3, when the internal combustion locomotive performs a high-power self-load test (when the power of the
As shown in fig. 3, when the
In the embodiment, the switching of the high-power self-load test in the brake resistance fault mode is realized by setting the switch loop into two
It should be particularly noted that various components or steps in the above embodiments can be mutually intersected, replaced, added or deleted, and therefore, the combination formed by reasonable permutation and combination conversion shall also belong to the protection scope of the present invention, and the protection scope of the present invention shall not be limited to the embodiments.
The above is an exemplary embodiment of the present disclosure, and the order of disclosure of the above embodiment of the present disclosure is only for description and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples, and that various changes and modifications may be made without departing from the scope, as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
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