Disclosure of Invention
The present application is directed to a maintenance system for a diesel generator set and a method for using the same, so as to solve the problems set forth in the background art.
To achieve the above object, the present application proposes, in one aspect, a maintenance system for a diesel generator set, including:
a diesel generator set, which functions as a power source;
the no-load section is electrically connected with the diesel generator set and is used for enabling the diesel generator set to run in no-load mode;
the safety PC section is electrically connected with the no-load section and is used for increasing the load of the diesel generating set;
the upper PC section is electrically connected with the security section and is used for increasing the load of the diesel generator set;
and the circuit breakers are arranged between the diesel generator set and the idle load section, between the idle load section and the security PC section, and between the security PC section and the upper PC section.
In some embodiments, the security PC section includes a security PC section a and a security PC section B, and the upper PC section is provided with a plurality of sections and is electrically connected to the security PC section a and the security PC section B, respectively.
In some embodiments, voltage transformers are provided on the secured PC A and secured PC B sections.
In another aspect of the present application, there is also provided a method of using a maintenance system for a diesel-electric generator set according to the above, comprising the steps of:
setting the expected load of the diesel generating set, calculating and organizing partial loads of the security PC section and the upper PC section to obtain a test load, and enabling the test load to be matched with the expected load;
starting the diesel generator set, and enabling the diesel generator set to be assembled with the idle load section, the security PC section and the upper PC section to run in an idle load mode by switching on the circuit breaker;
starting the loads on the security PC section and the upper PC section one by one until the test load is reached;
and maintaining the diesel generator set to operate for a certain time under the test load.
In some embodiments, the desired load is 60% of the total load of the diesel-electric generator set.
In some embodiments, before the starting the diesel-electric set, further comprises:
all loads on the security PC section and the upper PC section are checked and disabled, and all the circuit breakers are opened.
In some embodiments, the loads on the security PC segment and the upper PC segment are started one by one, specifically:
and starting the loads on the security PC section and the upper PC section in sequence according to the load capacity from large to small.
In some embodiments, the maintaining the diesel-electric set at the test load for a certain time is specifically:
the diesel-electric set is kept running at the test load for at least 1h.
In some embodiments, a method of using a diesel-genset maintenance system further comprises:
monitoring the running condition of the diesel generator set in the test process;
and after the diesel generator set is kept to run for a certain time under the test load, all loads on the security PC section and the upper PC section are stopped, and all the circuit breakers are opened.
In some embodiments, the disabling all loads on the security PC segment and the superior PC segment is specifically:
and sequentially stopping all loads on the security PC section and the upper PC section according to the load capacity from large to small.
Compared with the prior art, the beneficial effects of this application are:
1. according to the method, the running mode of the diesel generator set can be optimized, namely, when the diesel generator set is maintained, the load capacity of the diesel generator set is improved to be more than 60% of the total capacity of the diesel generator set, so that the purpose of removing carbon and air in the diesel engine is achieved, the problem that the carbon and air in the diesel engine are serious when the diesel generator set runs idle or under low load for a long time is effectively avoided, and the safety running of a thermal power plant is guaranteed.
2. The single load capacity of the belt connected with the upper PC section is generally larger, and the capacity of the diesel generator assembly with impact load can be tested under the accident conditions of power failure of the security section and the like by starting the loads one by one from large to small.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
As described in the background art, in order to ensure normal use of the diesel generator set when an accident occurs in a thermal power plant, the diesel generator set needs to be periodically maintained and checked, and the existing maintenance method generally starts the diesel generator set periodically, and performs load operation on an empty load or a safety section of the diesel generator set so as to check the load capacity of the diesel generator set. However, the design capacity of the load of the security section of the thermal power plant is only about 30% of the total capacity of the diesel generator set, so that the diesel generator set is frequently in idle load or low load operation in the maintenance and detection process, and the serious carbon accumulation and gas accumulation in the diesel engine can be caused for a long time, so that the diesel generator set can not be reliably reserved.
To improve the above problem, in one aspect of the present application, a maintenance system for a diesel generator set is provided, referring to fig. 1, which mainly includes: the system comprises a diesel generator set, an idle load section, a security PC section, an upper PC section, a plurality of circuit breakers (K0-K10) and a voltage transformer. The diesel generator set is used as a power supply for supplying power to the load on the no-load section, the security PC section, the upper PC section and the security PC section; no load is arranged on the no-load section, so that the diesel generator set runs in no-load mode; the load can be connected to the security PC section and the upper PC section for increasing the load of the diesel generator set, and the difference is that the load capacity of the upper belt of the security PC section is generally smaller, the load capacity of the upper belt is only about 30% of the total capacity of the diesel generator set, and the load capacity of the upper belt of the PC section is generally larger, so that the load of the diesel generator set can be further increased, and the purpose of removing carbon and air in the diesel engine can be achieved under the high-load operation of the diesel generator set; the circuit breaker is arranged in a loop formed by the components and used for controlling the on-off of a circuit; and the voltage transformer is used for protecting the circuit.
Specifically, in the exemplary embodiment:
the no-load section is electrically connected with the diesel generator set;
the security PC section specifically comprises a security PC section A and a security PC section B, and the security PC section A and the security PC section B are electrically connected with the idle section;
the voltage transformer is provided with two groups which are respectively positioned on the security PC A section and the security PC B section;
four sections are arranged on the upper PC section, and two groups of the security PC section A and the security PC section B are respectively and electrically connected;
the breaker comprises K0-K10, wherein K0 is arranged between the diesel generating set and the idle load section, K1 is arranged between the idle load section and the security PC A section, K2 is arranged between the idle load section and the security PC B section, K3, K5, K7 and K9 are arranged between the security PC A section and two upper PC sections, and K4, K6, K8 and K10 are arranged between the security PC B section and the other two upper PC sections.
In another aspect of the present application, according to the above-mentioned maintenance system for a diesel generator set, a method for using the maintenance system for a diesel generator set is also provided, which includes the following steps:
s1, setting expected load of a diesel generator set, calculating and organizing partial loads of a security PC section and an upper PC section to obtain test load, and enabling the test load to be matched with the expected load;
s2, checking and stopping all loads on the security PC section and the upper PC section, and disconnecting all circuit breakers;
s3, starting a diesel generator set, and enabling the diesel generator set to be assembled with an idle load section, a security PC section and an upper PC section to run in an idle load mode by switching on a circuit breaker;
s4, starting loads on the security PC section and the upper PC section in sequence according to the load capacity from large to small until the test load is reached;
s5, keeping the diesel generator set to run for a certain time under test load, and monitoring the running condition of the diesel generator set in the test process;
s6, after the diesel generator set is kept to run for a certain time under the test load, all loads on the security PC section and the upper PC section are sequentially shut down according to the load capacity from large to small, and all the circuit breakers are disconnected.
Specifically, in the exemplary embodiment, the desired load is preferably 60% of the total load of the diesel-electric generator set, and the diesel-electric generator set is maintained to operate at the test load for at least 1h for the purpose of purging carbon and air from the diesel engine.
In summary, compared with the prior art, the method can optimize the operation mode of the diesel generator set, namely, when the diesel generator set is maintained, the load capacity of the diesel generator set is increased to more than 60% of the total capacity of the diesel generator set, so that the aim of removing carbon and air in the diesel engine is fulfilled, the problem that the carbon accumulation in the diesel engine is serious when the diesel generator set runs idle or under low load for a long time is effectively avoided, and the guarantee is provided for the safe operation of a thermal power plant; the single load capacity of the upper PC section is generally larger, and the capability of the diesel generator assembly with impact load can be tested under the accident conditions of power failure and the like of the security section by starting and unloading the loads one by one from large to small.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the present application, but although the present application has been described in detail with reference to the foregoing embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.