CN211060969U

CN211060969U - Fault diagnosis device for coke pushing equipment

Info

Publication number: CN211060969U
Application number: CN201922383521.0U
Authority: CN
Inventors: 张静; 马志华; 任玉军; 陈宏宇; 顾维; 袁理; 白岩; 杨尧; 覃学飞
Original assignee: DALIAN HUARUI HEAVY INDUSTRY COKE OVEN VEHICLE EQUIPMENT CO LTD; Dalian Huarui Heavy Industry Group Co Ltd
Current assignee: DALIAN HUARUI HEAVY INDUSTRY COKE OVEN VEHICLE EQUIPMENT CO LTD; Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-21
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a coke pushing equipment fault diagnosis device, including installing the coke pushing encoder who is used for detecting the coke pushing rod stroke information on the shaft of coke pushing speed reducer, set up the range finding sensor that is used for detecting the deflection value of coke pushing rod in a plurality of positions of coke pushing rod below, install the vibration sensor who detects the vibration information of coke pushing rod on the transmission support of coke pushing rod, install the coke pushing converter of gathering coke pushing motor current information in the automatically controlled cabinet of coke pushing, receive coke pushing encoder, range finding sensor, vibration sensor and the programmable controller P L C of the data information of coke pushing converter conveying, programmable controller P L C's output is connected with the fault diagnosis server, the output of fault diagnosis server is connected with the terminal display screen.

Description

Fault diagnosis device for coke pushing equipment

Technical Field

The utility model relates to a coke pushing equipment fault detection technical field especially relates to a coke pushing equipment fault diagnosis device.

Background

The coke oven production is not only an important basis for the comprehensive utilization of coal, but also an important component in the metallurgical industry, and plays an extremely important role in economic operation. In order to ensure the normal production of the coke oven, a complete set of ultra-large equipment is provided, and the complete set of equipment mainly comprises: coal charging cars, coke pushing cars, coke guide cars and coke quenching cars. Wherein, the coke pusher is the core equipment for coke oven production. The coke pusher works on the coke oven side and is mainly used for pushing out mature coke in the coking chamber, completing the opening and closing of the oven doors on the coke pusher side and the coke pusher side before and after coke pushing, and mechanically cleaning the oven doors and oven door frames of the coke oven and the like. The coke pushing rod is a very important mechanism in the coke pusher. However, the current of the coke pushing rod during the coke pushing process not only affects the normal production of the coke oven, but also affects the service life of the coke pushing equipment, even causes the collapse of coke cakes, and the reason for the large current of the coke pushing rod must be found in consideration of the importance of the production of the coke oven and the severity of the problem of the large current of the coke pushing rod.

The problem of overhigh current in the coke pushing process of the coke pusher of the coke oven vehicle is difficult to overcome at present. The reason that the coke pushing current is too high can not be accurately judged by one device in China, and only the reason of failure can be checked after an accident happens, so that time and labor are wasted.

SUMMERY OF THE UTILITY MODEL

According to the problem that prior art exists, the utility model discloses a coke pushing equipment fault diagnosis device, concrete scheme includes:

a coke pushing encoder which is arranged on the shaft of the coke pushing reducer and is used for detecting the stroke information of the coke pushing rod;

the distance measuring sensors are arranged at a plurality of positions below the pushing ram and are used for detecting the deflection value of the pushing ram;

the vibration sensor is arranged on the pushing ram transmission support and used for detecting the vibration information of the pushing ram;

a coke pushing frequency converter which is arranged in the coke pushing electric control cabinet and is used for collecting the current information of the coke pushing motor;

and the programmable controller P L C is used for receiving data information transmitted by the coke pushing encoder, the distance measuring sensor, the vibration sensor and the coke pushing frequency converter, the output end of the programmable controller P L C is connected with the fault diagnosis server, and the output end of the fault diagnosis server is connected with the terminal display screen.

The output end of the distance measuring sensor is connected with a converter, and the output end of the converter is connected with a programmable controller P L C.

Since the technical scheme is used, the utility model provides a pair of coke pushing equipment fault diagnosis device, the device solves the difficult problem that the coke pusher pushed the burnt electric current too high, push away the burnt electric current curvilinear variation of current through the different stages of pushing away the burnt in-process, thereby detect and push away burnt pole vibration information and deflection value information, combine the method that above-mentioned information analysis diagnosis equipment trouble reason and output failure solved, consequently the device is simple in design structure novelty in the testing process, through only increasing range finding sensor, vibration sensor just can realize technical scheme's implementation, consequently, reduce the maintenance and the overhaul time of pushing away burnt equipment, promote the production efficiency of pushing away burnt equipment, improve the product quality of pushing away burnt equipment.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be 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 described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of the coke pushing equipment fault diagnosis device of the present invention;

FIG. 2 is a layout diagram of the coke pushing equipment fault diagnosis device of the present invention;

FIG. 3 is a wiring diagram of the coke pushing equipment fault diagnosis device of the present invention;

fig. 4 is a flow chart of the diagnosis and judgment of the device of the present invention.

Detailed Description

For making the technical solution and the advantages of the present invention clearer, the following combines the drawings in the embodiments of the present invention, to the technical solution in the embodiments of the present invention is clear and complete description:

as shown in figure 1, the fault diagnosis device of the coke pushing equipment comprises a coke pushing encoder 1, a distance measuring sensor 2, a vibration sensor 3, a coke pushing frequency converter 4, a programmable controller P L C5, a fault diagnosis Server 6 and a terminal display screen 7, wherein in the working process, the encoder 1 arranged on a shaft of a coke pushing speed reducer measures a coke pushing stroke, the distance measuring sensors 2 arranged at 4 positions below a coke pushing rod detect bending values of the coke pushing rod at 4 different positions, the two vibration sensors 3 arranged on a coke pushing rod transmission support measure vibration values, a current value is read through the coke pushing frequency converter 4 connected to a coke pushing motor 10, the stroke value of the coke pushing rod read by the coke pushing encoder 1, the deflection data of the coke pushing rod acquired by the distance measuring sensors 2 through a coke pushing rod converter 8, the vibration data of the coke pushing rod acquired by the vibration sensors 3, a coke pushing current acquired by the coke pushing frequency converter 4 is transmitted to the controller P L C5 of the coke pushing machine through a profinet bus switch 9 for storage, the fault diagnosis Server 6 reads data in P L C through an OPC, analyzes and displays the fault diagnosis on the fault diagnosis screen 7 finally.

Further, as shown in fig. 2 to fig. 4, the fault diagnosis Server 6 reads the data in P L C through the OPC Server and performs fault diagnosis analysis, and finally displays the fault reason and the processing method on the screen 7.

Further, the fault diagnosis method adopts the following procedures and principles: firstly, the stroke of a coke pushing rod is used as a division reference, and the coke pushing process is divided into the following three stages (no return analysis) which are used as different working condition environments for data analysis.

The first stage is as follows: and a coke pushing rod no-load advancing stage (front furnace section). At this time, the coke pushing rod is in an advancing state, but is not in contact with the coke, and the current is small.

And a second stage: when the coke pushing rod contacts the coke, the static friction force between the coke and the bottom of the coking chamber is overcome (coke cake contact section). At the moment, the coke pushing rod just contacts the coke cake, the coke cake shrinks, the resistance of the coke pushing rod is suddenly increased, the coke pushing current is gradually increased to the maximum, and then falls back and gradually tends to be stable.

And a third stage: a coke pushing stage (coke guide grate segment). The coke pushing resistance is basically unchanged along with the gradual pushing-out of the coke cake, and the current is in a stable state.

First, whether the current is abnormal is compared. The system reads the current value through the coke pushing frequency converter. In the first and third stages, the current change rate is low, so that only the measured current needs to be compared with the theoretical current value of the corresponding stroke position. If the measured value is higher than the theoretical value by 10%, it can be determined that the current is higher. In the second phase, the current fluctuates dramatically, so that the highest current is used, and a current higher than 50% is considered as the highest current.

If the current is too high, analyzing the vibration value; the vibration value is measured by two vibration sensors arranged on the pushing ram transmission support, and compared with a given normal value, whether the vibration value is abnormal or not is judged. If the vibration is normal in the first and second stages, the failure cause can be diagnosed as follows: the coke pushing motor is locked. The treatment method comprises the following steps: and checking whether the brake is clamped or not or the gear of the speed reducer is clamped. If the vibration is abnormal, the deflection value is analyzed. The distance measuring sensors 2 arranged at 4 positions of the pushing ram detect the deflection values of the pushing ram at 4 different positions, and whether the pushing ram is bent or not is obtained through comparison with a standard distance. Given a standard distance, one of which is greater or less than 10mm is anomalous. The deflection is sampled only once in one coke pushing process. Therefore, at any stage, as long as the deflection is abnormal, the failure cause can be diagnosed as follows: bending the pushing ram, and processing method: and adjusting the coke pushing rod.

And if the deflection is normal, analyzing the vibration value. In the first stage, if the vibration is abnormal, the cause of the failure can be diagnosed as: the rack loosens. The treatment method comprises the following steps: and correcting the rack. In the second phase, the vibration value is monitored. If only the single furnace is abnormal and the third-stage vibration is normal, the fault reason can be diagnosed as follows: a. the bottom of the carbonization chamber is uneven; b. local abnormalities of the furnace wall; the treatment method comprises the following steps: the hot repair maintenance of the coke oven is enhanced, and different maintenance measures are taken for different damage conditions of the oven wall. If there is an abnormality in the vibration of the multiple furnaces (monitoring the coke cake contact section data of the last 100 furnaces, not the present furnace), and the vibration of the third stage is normal, the cause of the failure can be diagnosed as: poor coal blending. The treatment method comprises the following steps: the water content and fineness of the blended coal are optimized, and the blending ratio is adjusted. In the third stage, if the vibration is abnormal, the cause of the failure can be diagnosed as: the height of the sliding shoes of the coke pushing head of the coke pushing rod is not properly adjusted. The treatment method comprises the following steps: the height of the sliding shoes of the coke pushing head is adjusted.

The utility model discloses a coke pushing equipment fault diagnosis device, which divides the coke pushing process into three stages, analyzes whether the current is abnormal in sequence, and if the current is not abnormal, the coke pushing process is considered to be normal; if the current is abnormal in any stage, the vibration and the deflection are specifically analyzed, the data changes of the same furnace in three stages are compared transversely or a plurality of furnaces are compared longitudinally, the fault reason of the equipment is analyzed and diagnosed, and the method has profound significance for maintaining the pushing ram and the furnace body. The plant is thus promoted as follows: the phenomenon of fault shutdown is reduced; the maintenance and overhaul time is reduced; the production efficiency is improved; the product quality in the coke pushing process is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A coke pushing equipment fault diagnosis device is characterized by comprising:

a coke pushing encoder (1) which is arranged on the shaft of the coke pushing speed reducer and is used for detecting the stroke information of the coke pushing rod;

distance measuring sensors (2) arranged at a plurality of positions below the pushing ram and used for detecting the deflection value of the pushing ram;

a vibration sensor (3) which is arranged on the pushing ram transmission support and is used for detecting the vibration information of the pushing ram;

a coke pushing frequency converter (4) which is arranged in the coke pushing electric control cabinet and is used for collecting the current information of the coke pushing motor;

and the programmable controller P L C (5) is used for receiving data information transmitted by the coke pushing encoder (1), the distance measuring sensor (2), the vibration sensor (3) and the coke pushing frequency converter (4), the output end of the programmable controller P L C (5) is connected with the fault diagnosis server (6), and the output end of the fault diagnosis server (6) is connected with the terminal display screen (7).

2. The coke pushing equipment fault diagnosis device according to claim 1, further characterized in that the output end of the distance measuring sensor (2) is connected with a converter (8), and the output end of the converter (8) is connected with a programmable controller P L C (5).