Coal pile spontaneous combustion monitoring device and monitoring method

Abstract

The application discloses a kind of coal heap spontaneous combustion monitoring equipment, including coal heap placement area, the coal heap placement area is equipped with conveyor, along the coal heap placement area is provided with a track, the track is equipped with rail car, the rail car is equipped with bearing table, the bearing table is equipped with elevator and mounting bracket, the top of the elevator is equipped with swing monitoring mechanism, the mounting bracket is equipped with multiple telescopic air cylinders, the front end of the multiple telescopic air cylinders is equipped with cooling mechanism, the front end of the cooling mechanism is equipped with reaming mechanism, the reaming mechanism is also installed with temperature probe;The application is simple in structure, novel in design, by setting monitoring equipment to monitor coal heap temperature in real time, to replace traditional manual detection, not only accurate detection effect, but also eliminate the safety hazard of manual operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of monitoring equipment, in particular to a coal pile spontaneous combustion monitoring equipment and a monitoring method. BACKGROUND

[0002] Factors affecting coal pile spontaneous combustion include:

[0003] (1) The influence of moisture: the most important factor affecting coal spontaneous combustion is the moisture content and change. When water evaporates, it absorbs a lot of heat from the outside, and on the contrary, when water condenses, it releases heat to the coal pile;

[0004] (2) The influence of particle fineness: the particle size is inversely proportional to its surface area. The smaller the particle, the larger the surface area, and the greater the contact area between the particle and the air, which makes it easier to produce oxidation reaction and generate heat. However, the particle size should not be too large when stacking;

[0005] (3) The influence of volatile matter: according to the amount of volatile matter, coal can be divided into several types such as bituminous coal, lignite and anthracite, and the calorific value increases, while the spontaneous heat is inversely proportional to the calorific value;

[0006] (4) The influence of temperature: the most important parameter. According to relevant experiments, below 80℃, the reaction rate decreases with the increase of temperature; above 80℃, the reaction rate increases with the increase of temperature;

[0007] Therefore, the coal stored in the coal yard needs to be regularly detected by workers. If internal spontaneous combustion occurs, it not only easily causes fire accidents, but also causes waste of resources;

[0008] The existing solution is to insert a temperature probe into the coal pile to monitor the temperature. This method requires a lot of manual work. On the other hand, when the height of the coal pile is greater than 2 meters, it is difficult to insert the temperature probe. At the same time, when workers enter the coal pile to detect manually, there is a safety hazard of being buried by the collapsed coal pile. SUMMARY

[0009] The present application aims to provide a coal pile spontaneous combustion monitoring equipment and a monitoring method to solve the problems in the background art.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a coal pile spontaneous combustion monitoring equipment, comprising a coal pile placement area, wherein the coal pile placement area is provided with a conveyor, a track is arranged along the coal pile placement area, a track car is arranged on the track, a bearing table is arranged on the track car, a lifting machine and a mounting frame are arranged on the bearing table, and the mounting frame is also designed as a lifting structure,

[0011] The top of the lifting machine is provided with a swing monitoring mechanism,

[0012] The mounting frame is provided with a plurality of telescopic air cylinders, the front end of the telescopic air cylinders is provided with a cooling mechanism, the front end of the cooling mechanism is provided with a reaming mechanism, and a temperature probe is further installed on the reaming mechanism.

[0013] The track vehicle, the elevator, the swing monitoring mechanism, the plurality of telescopic air cylinders, the cooling mechanism and the reaming mechanism are all connected with the general control console signal.

[0014] Preferably, the swing monitoring mechanism comprises a mounting block fixed to the top of the elevator.

[0015] The mounting block is provided with a bearing seat, a rotating shaft is inserted into the bearing seat, a gear is arranged below the rotating shaft, and a fixing frame is arranged above the rotating shaft.

[0016] A rack is engaged with the gear, the ends of the rack are fixed to the piston rod of the air cylinder, and the air cylinder is installed on the mounting block.

[0017] The fixing frame is provided with an infrared thermal imaging monitoring machine, the infrared thermal imaging monitoring machine has an alarm output function, and the infrared thermal imaging monitoring machine is connected with the general control console signal.

[0018] Preferably, the cooling mechanism comprises a support rod fixed to the piston rod of the plurality of telescopic air cylinders, and the end of the support rod is fixed with the reaming mechanism.

[0019] A cooling water pipe is wound around the support rod, and the cooling water pipe is connected to a cooling water circulation system through a conveying hose.

[0020] Preferably, the reaming mechanism comprises a mounting plate fixed to the end of the support rod, a micro rotary motor is arranged on the mounting plate, and a cylindrical shaft of the micro rotary motor is connected with a reaming drill bit.

[0021] A temperature probe is further installed on the mounting plate, and the temperature probe is connected with the general control console signal.

[0022] Preferably, a monitoring method of a coal pile spontaneous combustion monitoring device comprises the following steps:

[0023] S1: Adjusting the height of the elevator according to the height of the coal pile, so that the swing monitoring mechanism at the top thereof can be aligned with the coal pile;

[0024] S2: Starting the track vehicle to move along the periphery of the coal pile, and in the moving process, the swing monitoring mechanism is driven by the gear and the rack to make the infrared thermal imaging monitoring machine swing within a certain range, so as to ensure that the coal pile is always faced, thereby scanning the coal pile, generating an infrared thermal imaging video for monitoring the coal pile in real time, and displaying the above monitoring video on the monitoring screen of the general control console in real time.

[0025] S3: When the temperature of a certain area of the coal pile is monitored to exceed the set value, the hard disk recorder sends out an alarm sound and light signal, and the picture of the high temperature area on the monitoring screen of the hard disk recorder changes color, prompting the operator that the temperature of the coal pile is abnormal;

[0026] S4: The operator adjusts the height of the mounting frame according to the alarm prompt, so that the reaming mechanism is aligned with the high temperature area, and starts the rotation of the reaming drill bit, and at the same time starts the extension of the multi-section telescopic cylinder, so that the reaming drill bit penetrates into the coal pile, and at this time the cooling mechanism enters the inside of the coal pile along with the extension of the multi-section telescopic cylinder;

[0027] S5: The operator starts the cooling water circulation system, and uses the cooling mechanism to continuously circulate and cool in the coal pile, and at the same time the temperature probe installed on the reaming mechanism also monitors the temperature inside the coal pile in real time, and when the temperature reaches a stable value, the temperature probe will feed back a signal to the master console;

[0028] S6: The operator turns off the reaming mechanism and the cooling mechanism, and then retracts the piston rod of the multi-section telescopic cylinder, and then lowers the height of the mounting frame, so that these devices are all at the bottom, and then the rail car is operated again to move along the periphery of the coal pile for monitoring.

[0029] Compared with the prior art, the present application has the advantages that the structure is simple and novel, and the temperature of the coal pile is monitored in real time by the monitoring device, instead of traditional manual detection, which not only improves the detection accuracy, but also eliminates the safety hazards of manual operation.

[0030] In addition, through the cooperation of the multi-section telescopic cylinder, the cooling mechanism and the reaming mechanism, the multi-section telescopic cylinder is mainly used to advance the reaming mechanism to drill holes in the coal pile, and at the same time the cooling mechanism is pushed into the coal pile, so as to cool the high temperature area and prevent the coal pile from self-igniting. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a top view schematic diagram of the overall structure of the present application;

[0032] Figure 2 It is a schematic diagram of the connecting structure on the rail car of the present application;

[0033] Figure 3 It is a schematic diagram of the structure of the swing type monitoring machine of the present application;

[0034] Figure 4 It is a top view schematic diagram of the connecting structure on the mounting frame of the present application;

[0035] Figure 5 It is a schematic diagram of the structure of the cooling mechanism of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of the reaming mechanism of the present application. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] In the description of the application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0040] Please refer to Figures 1-6 The present application provides a technical solution: a coal spontaneous combustion monitoring device, comprising a coal pile placement area 1, a conveyor 2 is arranged at the coal pile placement area 1, an track 3 is arranged along the coal pile placement area 1, a track car 31 is arranged on the track 3, a bearing table 32 is arranged on the track car 31, a lifting machine 33 and a mounting frame 34 are arranged on the bearing table 32, and the mounting frame is also designed as a lifting type structure,

[0041] The top of the lifting machine 33 is provided with a swing type monitoring mechanism 4, the height of the swing type monitoring mechanism 4 is adjusted by the lifting machine, so as to correspond to the coal pile;

[0042] A multi-section telescopic cylinder 5 is arranged on the mounting frame 34, a cooling mechanism 6 is arranged at the front end of the multi-section telescopic cylinder 5, a reaming mechanism 7 is arranged at the front end of the cooling mechanism 6, and a temperature probe 8 is further arranged on the reaming mechanism 7, the multi-section telescopic cylinder is used to push the reaming mechanism 7 to extend into the coal pile for reaming, and the cooling mechanism also enters the inside of the coal pile at the same time, so as to cool the inside;

[0043] Finally, the track vehicle 31, the elevator 33, the swing monitoring mechanism 4, the multi-section telescopic cylinder 5, the cooling mechanism 6 and the reaming mechanism 7 are all signal connected with the master console, so that the operator can control them at the master console.

[0044] In this embodiment, the swing monitoring mechanism 4 comprises a mounting block 41 fixed to the top of the elevator 33;

[0045] A bearing seat 42 is fixed on the mounting block 41, and a rotating shaft 43 is inserted into the bearing seat 42, then a gear 44 is installed below the rotating shaft 43, and a fixing frame 45 is fixed above the rotating shaft 43;

[0046] A cylinder 47 is fixed on the mounting block 41, and the end of a rack 46 is fixed on the piston rod of the cylinder 47, and the rack 46 is engaged with the gear 44;

[0047] An infrared thermal imaging monitoring machine 48 is fixed on the fixing frame 45, which has an alarm output function, and the infrared thermal imaging monitoring machine 48 is also signal connected with the master console;

[0048] The swing mode of the monitoring mechanism is as follows: the gear is driven to rotate by the rack driven by the cylinder, so that the rotating shaft rotates, and the fixing frame also rotates back and forth, so that the infrared thermal imaging monitoring machine can swing within a certain range to ensure that it always faces the coal pile.

[0049] In this embodiment, the cooling mechanism 6 comprises a support rod 61 fixed on the piston rod of the multi-section telescopic cylinder 5,

[0050] A cooling water pipe 62 is wound on the support rod 61, and finally the input and output ends of the cooling water pipe 62 are connected to a cooling water circulating system 64 through a conveying hose 63, so that water circulation can be continuously carried out;

[0051] The conveying hose 63 in the above embodiment is customized according to the actual situation of the site to facilitate movement with the cooling water pipe;

[0052] The reaming mechanism 7 comprises a mounting plate 71 fixed to the end of the support rod 61, and a micro rotary motor 72 is arranged on the mounting plate 71, then a reaming drill bit 73 is installed on the cylindrical shaft of the micro rotary motor 72, so that the reaming drill bit 73 can be rotated by the micro rotary motor 72, thereby drilling the coal pile, and the multi-section telescopic cylinder 5 will continuously push the reaming drill bit 73 to penetrate, at the same time, the cooling water pipe 62 wound on the support rod 61 also enters the coal pile, and after starting the cooling water circulating system 64, the area can be cooled;

[0053] In addition, a temperature probe 8 is installed on the mounting plate 71, and the temperature probe 8 is also signal connected to the general control console, when the temperature decreases, it will feedback the signal, so that the operating personnel controls the multi-section telescopic cylinder 5 to retreat the cooling mechanism 6 and the reaming mechanism 7.

[0054] A monitoring method of a coal pile spontaneous combustion monitoring device, comprising the following steps:

[0055] S1: adjusting the height of the elevator according to the height of the coal pile, so that the swing monitoring mechanism at the top thereof can be aligned with the coal pile;

[0056] S2: starting the rail car to move along the periphery of the coal pile, and in the moving process, the swing monitoring mechanism swings in a certain range under the traction of the gear and the rack, so that the infrared thermal imaging monitoring machine always faces the coal pile, thereby scanning the coal pile to generate an infrared thermal imaging video for monitoring the coal pile in real time, and the monitoring video is displayed on the monitoring screen of the general control console in real time;

[0057] S3: when the temperature of a certain area of the coal pile is monitored to exceed the set value, the hard disk video recorder sends an alarm sound and light signal, and the picture of the high-temperature area on the monitoring screen of the hard disk video recorder changes color, prompting the operating personnel that the temperature of the coal pile is abnormal;

[0058] S4: the operating personnel adjusts the height of the mounting frame according to the alarm prompt, so that the reaming mechanism is aligned with the high-temperature area, and starts the rotation of the reaming drill bit, and at the same time, the multi-section telescopic cylinder is extended, so that the reaming drill bit penetrates into the coal pile, and at this time, the cooling mechanism enters the inside of the coal pile along with the extension of the multi-section telescopic cylinder;

[0059] S5: the operating personnel starts the cooling water circulation system, and uses the cooling mechanism to continuously perform circulating cooling in the coal pile, and at the same time, the temperature probe installed on the reaming mechanism also monitors the temperature in the coal pile in real time, and when the temperature reaches a stable value, the temperature probe feeds back a signal to the general control console;

[0060] S6: the operating personnel closes the reaming mechanism and the cooling mechanism, and after the piston rod of the multi-section telescopic cylinder is retracted, the rail car is moved again along the periphery of the coal pile for monitoring.

[0061] It is obvious to those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0062] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A coal pile spontaneous combustion monitoring device, comprising a coal pile placement area (1), a conveyor (2) provided at the coal pile placement area (1), a track (3) provided along the coal pile placement area (1), a rail car (31) provided on the track (3), and characterized in that: The rail car (31) is provided with a bearing platform (32), and the bearing platform (32) is provided with a lift (33) and a mounting frame (34). The mounting frame (34) is also designed to be liftable. The top of the elevator (33) is provided with a swing-type monitoring mechanism (4). A multi-section telescopic cylinder (5) is provided on the mounting frame (34), a cooling mechanism (6) is provided at the front end of the multi-section telescopic cylinder (5), a hole expansion mechanism (7) is provided at the front end of the cooling mechanism (6), and a temperature probe (8) is also installed on the hole expansion mechanism (7); The rail car (31), the elevator (33), the swing-type monitoring mechanism (4), the multi-section telescopic cylinder (5), the cooling mechanism (6) and the reaming mechanism (7) are all connected to the main control console signal; The swing-type monitoring mechanism (4) includes a mounting block (41), and the mounting block (41) is fixed to the top of the elevator (33); A bearing seat (42) is provided on the mounting block (41), a rotating shaft (43) is inserted into the bearing seat (42), a gear (44) is provided below the rotating shaft (43), and a fixing frame (45) is provided above the rotating shaft (43); The gear (44) is meshed with a rack (46), the end of the rack (46) is fixed to the piston rod of the cylinder (47), and the cylinder (47) is mounted on the mounting block (41); An infrared thermal imaging monitoring machine (48) is provided on the fixing frame (45), and the infrared thermal imaging monitoring machine (48) has an alarm output function, and the infrared thermal imaging monitoring machine (48) is connected to the main control console through a signal; The cooling mechanism (6) comprises a support rod (61), the support rod (61) being fixed to the piston rod of the multi-section telescopic cylinder (5), and a hole expansion mechanism (7) being fixed to the end of the support rod (61); A cooling water pipe (62) is wound around the support rod (61), and the cooling water pipe (62) is connected to a cooling water circulation system (64) via a delivery hose (63); The reaming mechanism (7) includes a mounting plate (71), the mounting plate (71) is fixed to the end of the support rod (61), a micro rotary motor (72) is provided on the mounting plate (71), and the cylindrical shaft of the micro rotary motor (72) is connected to the reaming drill bit (73); A temperature probe (8) is also mounted on the mounting plate (71), and the temperature probe (8) is connected to the main control console via a signal.

2. The monitoring method of a coal pile spontaneous combustion monitoring device according to claim 1, characterized in that: The following steps are involved: S1: Adjust the height of the elevator according to the height of the coal pile so that the swing-type monitoring mechanism on its top can be aligned with the coal pile; S2: The railcar is started to move along the periphery of the coal pile. During the movement, the swing-type monitoring mechanism is driven by the gear and rack to make the infrared thermal imaging monitoring device swing within a certain range to ensure that it is always facing the coal pile, thereby scanning the coal pile and generating a real-time infrared thermal imaging video of the coal pile. The infrared thermal imaging video of the coal pile is displayed in real time on the monitoring screen of the main control console; S3: When the temperature of a certain area of ​​the coal pile exceeds the set value, the DVR sends out an alarm sound and light signal, and the high temperature area image on the DVR monitoring screen changes color, prompting the operator that the coal pile temperature is abnormal; S4: Following the alarm, the operator first adjusts the height of the mounting frame so that the reaming mechanism is aligned with the high-temperature area. The operator then starts the reaming drill bit to rotate and simultaneously activates the extension of the multi-section telescopic cylinder, allowing the reaming drill bit to penetrate deeper into the coal pile. At this point, the cooling mechanism enters the coal pile as the multi-section telescopic cylinder extends. S5: The operator starts the cooling water circulation system, which continuously circulates cooling water inside the coal pile using the cooling mechanism. At the same time, the temperature probe installed on the reaming mechanism also monitors the internal temperature of the coal pile in real time. When the temperature reaches a stable value, the temperature probe feeds back a signal to the main control console. S6: The operator turns off the expansion mechanism and the cooling mechanism, retracts the piston rod of the multi-section telescopic cylinder, and then operates the rail car again to move along the periphery of the coal pile for monitoring.

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