Automatic furnace sampling device for furnace coal sampler and control method thereof

Abstract

The present invention belongs to the technical field of coal sampling devices. In order to solve the technical problem that the prior art cannot distinguish different boilers from each other in collecting coal samples according to the direction of coal flow, the present invention provides an automatic furnace sampling device for a furnace coal sampler and a control method thereof. The device includes: a boiler status receiver, a plurality of sampling barrels, and a transmission unit, which is used to transmit the sampling coal in the furnace coal conveyor belt to the corresponding sampling barrels respectively; a plurality of position sensing elements are respectively arranged on each sampling barrel; a detection unit is used to detect the position of the sensing element on each sampling barrel; a controller is used to control the sampling barrel rotating device to rotate the sampling barrel corresponding to the boiler in the coal loading state to the position corresponding to the transmission unit according to the information collected by the boiler status receiver. Therefore, it is possible to realize automatic full-section interception and furnace sampling by belt-entering sampling; so that the automatic sampling can collect coal samples separately according to the different directions of coal flow.

Description

Technical Field

[0001] The present invention relates to the technical field of coal sampling devices, and in particular to an automatic furnace sampling device for a furnace coal sampler and a control method thereof. Background Art

[0002] In the coal production process of thermal power plants, the cost of fuel accounts for about 80% of the total cost, so ensuring the quality of coal entering the furnace is of great significance to maintaining the economic benefits of the power plant. The sampling link has a great impact on the error caused by the analysis results. Most of the existing coal sampling devices entering the furnace are set in the middle of the conveyor belt. During the operation of the belt, the sampling head regularly scrapes the coal from the belt and enters the shrinking equipment. The excess coal samples are taken back to the conveyor belt by the bucket elevator.

[0003] The analysis and test results of the coal sample entering the furnace can be used as a basis for evaluating the quality of the coal entering the furnace, and the calorific value of the coal sample entering the furnace has a very large impact on determining the thermal efficiency of the power plant boiler. For example, the Chinese patent application number CN201420866605.4 discloses a switch auxiliary device for the coal sampler entering the furnace, and multiple relays connected in parallel are installed at the switch auxiliary contacts of the coal sampler entering the furnace under the coal conveyor belt, wherein the coil of the relay is connected in parallel between the power supply and the ground wire, and one end of the normally closed contact and the normally open contact of the relay are respectively connected to one of the common input lines of the PLC controller of the coal sampler entering the furnace, and the other end is respectively connected to the PLC controller of the coal sampler entering the furnace as the output of the switch auxiliary contact; therefore, the switch contact is moved to the relay node, which is convenient to install and provides a stable signal, thereby ensuring the smooth operation of the coal sampler entering the furnace.

[0004] However, the inventors discovered during the process of implementing the present invention that: currently, when sampling coal entering the power plant, only the coal on the entire belt can be continuously sampled, and coal samples cannot be collected from different boilers according to the direction of the coal flow. Manual sampling cannot be continuous. Such coal samples are not representative and scientific for different boiler characteristics, and have no guidance or reference for the coal consumption and procurement of the entire power plant. Due to the unrepresentativeness of the coal samples, the environmental protection costs are even increased due to misjudgment of the boiler coal allocation. Summary of the invention

[0005] In order to solve the technical problem in the prior art that coal samples cannot be collected separately from different boilers according to the direction of coal flow, the present invention provides an automatic furnace sampling device for a furnace coal sampler and a control method thereof, which can realize belt feeding into the furnace and automatic full-section interception and furnace sampling; the automatic sampling can collect coal samples separately according to the different directions of coal flow.

[0006] In order to achieve the above object, the technical solution provided by the present invention includes:

[0007] In one aspect, the present invention provides an automatic furnace sampling device for a furnace coal sampler, which is characterized by comprising:

[0008] Boiler status receiver, used to collect information about the boilers in coal loading status among multiple boilers;

[0009] A plurality of sampling buckets, each sampling bucket corresponds to a boiler and is used to collect sampling coal corresponding to each boiler;

[0010] A conveying unit, used to convey the sampling coal in the coal conveyor belt to the corresponding sampling buckets;

[0011] A sampling barrel rotating device, used to control the rotation of the plurality of sampling barrels;

[0012] A plurality of position sensing elements are respectively arranged on each of the sampling barrels;

[0013] A detection unit, used to detect the position of the sensing element on each sampling barrel;

[0014] The controller is used to control the sampling barrel rotating device to rotate the sampling barrel corresponding to the boiler in the coal loading state to a position corresponding to the transmission unit according to the information collected by the boiler status receiver.

[0015] In a preferred implementation of an embodiment of the present invention, the detection unit includes a plurality of sensing elements arranged in a vertical direction, and the number of the sensing elements is equal to the number of sampling buckets; and the position sensing elements in the plurality of sampling buckets are also arranged at different height positions in the vertical direction.

[0016] In a further preferred implementation manner of the embodiment of the present invention, the device further comprises: a bracket for mounting the plurality of position sensing elements.

[0017] In a preferred implementation of the embodiment of the present invention, the sampling barrel rotating device includes: a turntable, a sampling barrel placement portion located on the turntable, and a motor connected to the turntable; wherein the multiple sampling barrels are respectively detachably placed on the sampling barrel placement portion.

[0018] In a preferred implementation manner of the embodiment of the present invention, each of the plurality of boilers has a plurality of position signal output units, the plurality of position signal output units are connected in parallel, and the parallel-connected signals are output to the boiler status receiver.

[0019] In a preferred implementation manner of the embodiment of the present invention, the device further comprises: a memory for storing the serial numbers of the plurality of sampling buckets and the serial numbers of the plurality of boilers, and storing each sampling bucket in association with each boiler.

[0020] In a further preferred implementation of the embodiment of the present invention, the device further includes: an alarm unit, which sends an alarm message when the boiler number fed back by the boiler status receiver and the sampling bucket number fed back by the position sensing element are different from the association relationship stored in the memory.

[0021] Another aspect of the present invention provides a control method for an automatic furnace sampling device for a furnace coal sampler, which is characterized by comprising:

[0022] Collect data from multiple boilers that are in the coal loading state;

[0023] According to the information collected by the boiler status receiver, the sampling barrel rotating device is controlled to rotate the sampling barrel corresponding to the boiler in the coal loading state to the position corresponding to the transmission unit;

[0024] Detecting the position of the sensing element on each sampling barrel, and confirming whether the current boiler corresponds to the correct sampling barrel based on the detection result;

[0025] If the current boiler corresponds to the correct sampling barrel, the sampling coal in the coal conveyor belt entering the furnace is respectively conveyed to the corresponding sampling barrel;

[0026] Multiple sampling buckets collect sampling coal corresponding to each boiler.

[0027] In a preferred implementation of an embodiment of the present invention, the automatic furnace sampling device for the coal sampler entering the furnace includes a detection unit; the detection unit includes: a plurality of sensing elements arranged in a vertical direction, the number of the sensing elements being equal to the number of sampling buckets; and the position sensing elements in the plurality of sampling buckets are also arranged at different height positions in the vertical direction; wherein, detecting the position of the sensing element on each sampling bucket, and confirming whether the current boiler corresponds to the correct sampling bucket based on the detection result, includes: obtaining the sampling bucket number by sensing the position of the sensing element of the sampling bucket in the detection unit, and confirming whether the current boiler corresponds to the correct sampling bucket based on whether the boiler number corresponding to the boiler in the coal-loading state and the boiler number satisfy a predetermined relationship.

[0028] In a preferred implementation manner of an embodiment of the present invention, each boiler has a plurality of position signal output units, and the plurality of position signal output units are connected in parallel; wherein, the collecting of the boilers in the coal-loading state among the plurality of boilers includes: determining the number of the boiler in the coal-loading state based on the corresponding boiler number after the signal after the boiler output is connected in parallel.

[0029] By adopting the above technical solution provided by the present invention, the following beneficial effects can be achieved:

[0030] A single sample collecting barrel is divided into multiple sample collecting barrels, and the coal samples are collected separately according to the different directions of coal flow with automatic sampling. The belt-into-furnace sampling realizes automatic full-section interception and furnace sampling. No personnel participation is required for furnace sampling to avoid coal sample contamination.

[0031] Other features and advantages of the invention will be described in the following description, and partly become apparent from the description, or understood by implementing the technical solution of the invention. The purpose and other advantages of the invention can be achieved and obtained by the structures and / or processes specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A block diagram of the composition of an automatic furnace sampling device for a furnace coal sampler is provided in an embodiment of the present invention.

[0033] Figure 2 A schematic structural diagram of an automatic furnace sampling device for a furnace coal sampler is provided in accordance with an embodiment of the present invention.

[0034] Figure 3 A control logic diagram of a rotary drum motor in an automatic furnace sampling device for a furnace coal sampler is provided in an embodiment of the present invention.

[0035] Figure 4 A flow chart of an automatic furnace sampling method for a furnace coal sampler is provided in accordance with an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only to make it easier and clearer for ordinary technicians in the field to understand the present invention, rather than a restrictive interpretation of the present invention; and as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0037] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments:

[0038] Example

[0039] like Figure 1 As shown, this embodiment provides an automatic furnace sampling device 200 for a furnace coal sampler, and the automatic furnace sampling device 200 for a furnace coal sampler includes:

[0040] The boiler status receiver 210 is used to collect information about the boilers in the coal loading state among the multiple boilers. The boiler status receiver 210 is capable of receiving information from the coal sampler about which boiler is currently in the coal loading state. For example, a sensing element may be provided at the coal inlet of each boiler. If coal is detected to enter the current boiler, it indicates that the current boiler is in the coal loading state. Alternatively, the position signal output unit in the preferred embodiment mentioned below may be used.

[0041] There are multiple sampling barrels 230, each of which corresponds to a boiler and is used to collect the sampling coal corresponding to each boiler; that is, each boiler needs a sampling barrel, so that the corresponding coal entering the boiler in each boiler can be sampled separately. Of course, this embodiment is not limited to directly connecting some sampling barrels together, and each boiler corresponding to a sample storage space and a sample coal entrance can realize the technical solution of this embodiment.

[0042] The conveying unit 240 is used to convey the sampling coal in the in-furnace coal conveyor belt to the corresponding sampling barrels respectively; the conveying unit 240 can be a branch conveyor belt connected to the conveyor belt or the rotating drum device mentioned below. According to the preferred implementation mode below, multiple sampling barrels can share one conveying unit 240, or each sampling barrel can be configured with a conveying unit; this embodiment does not limit its specific structure.

[0043] The sampling barrel rotating device 220 is used to control the rotation of multiple sampling barrels; the sampling barrel rotating device 220 is used to rotate the corresponding sampling barrel to the corresponding coal delivery port of the conveying unit 240 when each sampling barrel needs to receive coal entering the furnace; the sampling barrel rotating device 220 can be the rotating disk and motor mentioned below, or a rotating motor can be set for each sampling barrel.

[0044] A plurality of position sensing elements 232 are respectively arranged on each sampling barrel; a detection unit 250 is used to detect the position of the sensing element on each sampling barrel. The coordination relationship between the position sensing element 232 and the detection unit 250 can be identified by the position relationship mentioned below, and different (different types or different principles) position sensing elements 232 and detection units 250 can also be arranged on each sampling barrel, so that each different sampling barrel can be identified according to the difference in output signals.

[0045] The sampling barrel rotating device 220 is configured to rotate the sampling barrel corresponding to the boiler in the coal loading state to a position corresponding to the transmission unit 230 according to the information collected by the boiler state receiver 210 .

[0046] Specifically, the controller 260 can be used to assist in completing the above process. The controller 260 is used to control the sampling barrel rotating device 220 to rotate the sampling barrel corresponding to the boiler in the coal loading state to the position corresponding to the transmission unit 230 according to the information collected by the boiler status receiver. That is, the controller 260 can simultaneously receive the information collected by the boiler status receiver 210 about which boiler is in the coal loading state, and then control the sampling barrel rotating device 220 to rotate the sampling barrel corresponding to the boiler in the coal loading state to the coal outlet position of the transmission unit 240, so that each sampling barrel can collect coal that needs to be sampled from multiple boilers. The controller 260 in this embodiment can be a PLC device, or a dedicated integrated circuit controller, such as a CPU, SoC or single-chip microcomputer controller; this embodiment does not impose specific restrictions on it.

[0047] It should be noted that the implementation of the CPU, SoC or single-chip controller in the above scheme may not involve the improvement of the program itself, but may use a known computer program. For example, after the boiler state receiver 210 receives a signal, it gives a signal to the controller 260, and the controller 260 can control the sampling barrel rotating device 220 to perform rotation according to the known rotation control program; of course, these processes can also be implemented using a comparator, for example, if there is a signal from the state receiver 210, a rotation signal is output. It is also possible not to use the controller 260, but to directly transmit the signal of the boiler state receiver 210 to the sampling barrel rotating device 220. For example, if a signal 1 is given, the sampling barrel rotating device 220 rotates once and rotates the first sampling barrel to the specified position; if a signal 2 is given, it rotates twice and rotates the second sampling barrel to the specified position. The other barrels are similar.

[0048] By adopting the above-mentioned technical scheme provided in this embodiment, a single sample collecting barrel is divided into multiple sample collecting barrels, and the coal samples are collected separately according to the different directions of the coal flow with automatic sampling; and the belt is brought into the furnace for sampling to realize automatic full-section interception and furnace sampling, and no personnel participation is required for furnace sampling, thus avoiding contamination of coal samples.

[0049] like Figure 2 As shown, in a preferred implementation of this embodiment, the detection unit includes a plurality of sensing elements arranged in a vertical direction, the number of sensing elements being equal to the number of sampling barrels; and the position sensing elements in the plurality of sampling barrels are also arranged at different heights in the vertical direction. In a further preferred implementation, the automatic furnace sampling device 200 for the furnace coal sampler further includes: a bracket for mounting a plurality of position sensing elements.

[0050] In a preferred implementation manner of this embodiment, the sampling barrel rotating device includes: a turntable 160, a sampling barrel placement portion on the turntable, and a motor connected to the turntable; a plurality of sampling barrels are detachably placed on the sampling barrel placement portion.

[0051] Specifically, Figure 2 As shown, the automatic furnace sampling device 200 for the furnace coal sampler provided in this embodiment will first receive the information collected by the boiler status receiver 210 as to which boiler is in the coal loading state, and then control the sampling barrel in the turntable 160 to rotate the corresponding sampling barrel to a position corresponding to the outlet below the conveying drum 130, and the conveying drum 130 receives the furnace coal 120 in the conveyor belt 110. The sampling barrel 142, the sampling barrel 144, the sampling barrel 146, and the sampling barrel 148 are respectively provided with a sensing element 142a, a sensing element 144a, a sensing element 146a, and a sensing element 148a; wherein each sensing element has a different position in the height direction; and a bracket is provided next to the turntable 160, and a detection unit is provided on the bracket, and the detection unit includes a position detector 152, a position detector 154, a position detector 156, and a position detector 158; the position detector 152, the position detector 154, the position detector 156, and the position detector 158 correspond to the positions of the sensing element 142a, the sensing element 144a, the sensing element 146a, and the sensing element 148a in the height direction. In this way, it can be detected whether each sampling barrel is rotated to the position corresponding to the exit position of the conveying drum 130 as required when needed. It should be noted that in this embodiment, one of the sensing element and the position detector can be an element that can output signals and the other can receive signals. For example, the sensing element is a reflective element, and the position detector includes a light emitting and receiving part and a light sending part. Of course, the sensing element and the position detector can also be swapped; other different types of sensors and sensing elements can also be used; this embodiment does not limit its specific structure.

[0052] In this embodiment, when the position detector detects that the sensing element in the sampling bucket meets the predetermined signal requirement, the turntable stops, and the sampling bucket is located at the exit below the conveying drum 130. The turntable can also be controlled to rotate for different predetermined time periods according to different sampling buckets when the position detector detects that the sensing element in the sampling bucket meets the predetermined signal requirement.

[0053] In a preferred implementation manner of this embodiment, each of the multiple boilers has multiple position signal output units, the multiple position signal output units are connected in parallel, and the parallel signals are output to the boiler status receiver.

[0054] like Figure 3As shown, in this embodiment, the address for starting the drum motor is Q0.1, the address for delaying starting the drum motor is T32, and the address for braking the drum motor is Q0.2.

[0055] In a preferred implementation manner of this embodiment, the automatic furnace sampling device 200 for the in-furnace coal sampler further includes: a memory (not shown) for storing the serial numbers of multiple sampling barrels and the serial numbers of multiple boilers, and storing each sampling barrel in association with each boiler.

[0056] In a further preferred implementation of this embodiment, the device also includes: a warning unit (not shown), which sends a warning message when the boiler number fed back by the boiler status receiver and the sampling bucket number fed back by the position sensing element are different from the association relationship stored in the memory; for example, a sound alarm or SMS notification.

[0057] In order to achieve the above purpose, the technical solution provided in this embodiment specifically needs to be improved as follows:

[0058] 1. Boiler coal bunker position signal

[0059] Combine the existing coal bunker position switch signals of the unloading trolley (or coal plow): 1) Connect multiple signals of each bunker position switch of the same boiler unloading trolley (or coal plow) in parallel into one signal in the program. Output it to the sampler through point Q to determine which boiler to load coal to. 2) Connect the unloading trolley gate belt position signal and the last bunker position switch signal in parallel to output one signal to determine that the tail bunker is adding coal and determine the corresponding boiler position.

[0060] 2. Transform a single sample collection barrel into multiple rotating barrels (sampling barrels)

[0061] The existing single sample collecting barrel is removed and replaced with a detachable rotating barrel device. The rotating barrel device is installed with the same number of barrels as the number of boilers. Each barrel is numbered differently according to the position of the sensor and the induction body, and the number is consistent with the boiler number.

[0062] 3. Coal sample collection

[0063] The position of the coal sample collection drum is determined by the coal bunker position switch, the unloading trolley gate and the drum sensor; if the position switch is at the coal bunker position of boiler No. 1 and the drum is not in drum No. 1, the drum will rotate until the No. 1 sensor is triggered and the brake is engaged; if the position switch is at the coal bunker position of boiler No. 1 and the drum is in drum No. 1, the coal sample passing through the reducer will fall into drum No. 1. The determination method for other boilers and corresponding drums is the same.

[0064] The unloading trolley is at the belt position. Since the coal directly enters the tail bin of boiler No. 4, the rotary barrel rotates to the position of barrel No. 4, and the coal sample passing through the reducer falls into barrel No. 4.

[0065] More specifically, it requires:

[0066] 1. Boiler coal bunker position switch signal requirements: Since each boiler has multiple position signals, it is necessary to output each position signal in parallel. As long as one signal is triggered, it can be determined which boiler the coal flow enters, and at the same time adjust the coal sample collection barrel number and the furnace number to correspond.

[0067] 2. Production of the gate position signal of the unloading trolley: The gate belt position signal of the unloading trolley is required to be output in parallel as the position signal of the last furnace.

[0068] 3. Requirements for the production of rotating barrels: 1) The rotating barrel must be removable so that it can be replaced when taking coal samples. 2) The sensor of the rotating barrel needs to be installed on each rotating barrel rack and each height is different so that the corresponding sensor can be sensed and the rotating barrel can be numbered.

[0069] 4. Requirements for the reducer: The coal sample after the reducer must fall into the corresponding rotating bucket, and cannot fall into the rotating bucket or outside the rotating bucket. The rotation time of the brake motor needs to be adjusted through software. The coal sample falls into the corresponding rotating bucket.

[0070] like Figure 4 As shown, this embodiment also provides a control method for an automatic furnace sampling device for a furnace coal sampler, the method comprising:

[0071] S110, collecting data from multiple boilers that are in a coal loading state;

[0072] S120, according to the information collected by the boiler status receiver, controlling the sampling barrel rotating device to rotate the sampling barrel corresponding to the boiler in the coal loading state to a position corresponding to the transmission unit;

[0073] S130, detecting the position of the sensing element on each sampling barrel, and confirming whether the current boiler corresponds to the correct sampling barrel according to the detection result;

[0074] S140, if the current boiler corresponds to the correct sampling barrel, the sampling coal in the coal conveyor belt is respectively conveyed to the corresponding sampling barrel;

[0075] S150. Multiple sampling buckets collect sampling coal corresponding to each boiler.

[0076] In a preferred implementation manner of this embodiment, the automatic furnace sampling device for the coal sampler entering the furnace includes a detection unit; the detection unit includes: a plurality of sensing elements arranged in the vertical direction, the number of the sensing elements being equal to the number of sampling barrels; and the position sensing elements in the plurality of sampling barrels are also arranged at different height positions in the vertical direction; wherein, in the above-mentioned step S130, the position of the sensing element on each sampling barrel is detected, and based on the detection result, whether the current boiler corresponds to the correct sampling barrel is confirmed, including: obtaining the sampling barrel number by sensing the position of the sensing element of the sampling barrel in the detection unit, and confirming whether the current boiler corresponds to the correct sampling barrel based on whether the boiler number corresponding to the boiler in the coal loading state and the boiler number satisfy a predetermined relationship.

[0077] In a preferred implementation manner of this embodiment, each boiler has a plurality of position signal output units, and the plurality of position signal output units are connected in parallel; wherein, in the above step S110, collecting the number of boilers in the coal-loading state among the plurality of boilers includes: determining the number of the boiler in the coal-loading state based on the corresponding boiler number after the signal after the boiler output is connected in parallel.

[0078] The control method of the automatic furnace sampling device for the coal sampler entering the furnace provided in this embodiment can adopt the control device 200 of the automatic furnace sampling device for the coal sampler entering the furnace in the above-mentioned embodiment. The specific structure and technical effect of the control device 200 of the automatic furnace sampling device for the coal sampler entering the furnace are the same as those described above, and will not be described in detail in this embodiment.

[0079] Finally, it should be noted that the above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and simple replacements to the technical solution of the present invention by using the above disclosed practices and technical contents without departing from the scope of the technical solution of the present invention, which all belong to the scope of protection of the technical solution of the present invention.

Claims

1. An automatic furnace sampling device for a furnace coal sampler, characterized in that: include: Boiler status receiver, used to collect information about the boilers in coal loading status among multiple boilers; A plurality of sampling buckets, each sampling bucket corresponds to a boiler and is used to collect sampling coal corresponding to each boiler; A conveying unit, used to convey the sampling coal in the coal conveyor belt to the corresponding sampling buckets; A sampling barrel rotating device, used to control the rotation of the plurality of sampling barrels; A plurality of position sensing elements are respectively arranged on each of the sampling barrels; A detection unit, used to detect the position of the sensing element on each sampling barrel; A controller, for controlling the sampling barrel rotating device to rotate the sampling barrel corresponding to the boiler in the coal loading state to a position corresponding to the transmission unit according to the information collected by the boiler status receiver; The detection unit includes a plurality of sensing elements arranged in a vertical direction, the number of the sensing elements being equal to the number of the sampling buckets; and the position sensing elements in the plurality of sampling buckets are also arranged at different height positions in the vertical direction; The sampling barrel rotating device comprises: a rotating disk, a sampling barrel placing portion located on the rotating disk, and a motor connected to the rotating disk; wherein the plurality of sampling barrels are respectively detachably placed on the sampling barrel placing portion; Each of the plurality of boilers has a plurality of position signal output units, the plurality of position signal output units are connected in parallel, and the parallel-connected signals are output to the boiler status receiver.

2. The device according to claim 1, characterized in that Also includes: A bracket for mounting the plurality of position sensing elements.

3. The device according to claim 1, characterized in that Also includes: The memory is used to store the serial numbers of the plurality of sampling barrels and the serial numbers of the plurality of boilers, and associate and store each sampling barrel with each boiler.

4. The device according to claim 3, characterized in that Also includes: The warning unit sends a warning message when the boiler number fed back by the boiler status receiver and the sampling bucket number fed back by the position sensing element are different from the association relationship stored in the memory.

5. The control method of the automatic furnace sampling device for the furnace coal sampler according to claim 1 is characterized in that: include: Collect data from multiple boilers that are in the coal loading state; According to the information collected by the boiler status receiver, the sampling barrel rotating device is controlled to rotate the sampling barrel corresponding to the boiler in the coal loading state to the position corresponding to the transmission unit; Detecting the position of the sensing element on each sampling barrel, and confirming whether the current boiler corresponds to the correct sampling barrel based on the detection result; If the current boiler corresponds to the correct sampling barrel, the sampling coal in the coal conveyor belt entering the furnace is respectively conveyed to the corresponding sampling barrel; Multiple sampling buckets collect sampling coal corresponding to each boiler.

6. The method according to claim 5, characterized in that The automatic furnace sampling device for the coal sampler entering the furnace includes a detection unit; the detection unit includes: a plurality of sensing elements arranged in the vertical direction, the number of the sensing elements being equal to the number of sampling barrels; and the position sensing elements in the plurality of sampling barrels are also arranged at different height positions in the vertical direction; wherein, detecting the position of the sensing element on each sampling barrel, and confirming whether the current boiler corresponds to the correct sampling barrel based on the detection result, includes: obtaining the sampling barrel number by sensing the position of the sensing element of the sampling barrel in the detection unit, and confirming whether the current boiler corresponds to the correct sampling barrel based on whether the boiler number corresponding to the boiler in the coal loading state and the boiler number satisfy a predetermined relationship.

7. The method according to claim 5, characterized in that Each boiler has a plurality of position signal output units, which are connected in parallel; wherein, collecting the number of boilers in the coal loading state among the plurality of boilers comprises: determining the number of the boiler in the coal loading state based on the corresponding boiler number after the signals output by the boilers in parallel are connected.

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