Full-automatic fire coal sampling system

Abstract

The invention discloses a full-automatic fire coal sampling system, which comprises a thermal power plant side unit used for generating a plurality of sampling schemes and a sampling code corresponding to each sampling scheme according to the amount of coal, and sending the sampling schemes, the sampling codes and a sampling period to a sampling machine; the sampling machine is used for sending the sampling code and the sampling period to the collector when the sampling machine is in a running state; the collector comprises a plurality of sample barrels and is used for sampling according to the sampling period and the sampling code; the interface unit is used for data interaction among the thermal power plant side unit, the sampling machine and the collector; the thermal power plant side unit, the sampling machine and the collector are respectively connected with the interface unit, so that full automation of coal burning of the thermal power plant is realized.

Description

Technical Field

[0001] The present application relates to the technical field of coal sampling in thermal power plants, and more specifically, to a fully automatic coal sampling system. Background Art

[0002] In recent years, the requirements for ecological environmental protection and rational use of coal resources have gradually increased.

[0003] Therefore, we consider designing a fully automatic coal sampling system to realize full automation of sampling work and reduce labor costs and risks. Summary of the invention

[0004] The present invention provides a fully automatic coal sampling system to solve the technical problems of low efficiency and personnel and equipment risks in the coal sampling process in the prior art. The system comprises:

[0005] A thermal power plant side unit, used to generate multiple sampling schemes and sampling codes corresponding to each sampling scheme according to the amount of incoming coal, and send the sampling schemes, the sampling codes and the sampling period to a sampling machine;

[0006] A sampler, used for sending the sampling code and the sampling period to a collector when in operation;

[0007] A collector, including a plurality of sample barrels, for sampling according to the sampling period and sampling code;

[0008] An interface unit, used for data exchange between the plant-side unit, the sampler and the collector of the thermal power plant;

[0009] The thermal power plant side unit, the sampler and the collector are respectively connected to the interface unit.

[0010] In some embodiments of the present application, the thermal power plant side unit is also used for:

[0011] A sampling plan table is generated according to the incoming coal information, and the sampling plan table includes batch number, sampling code, sampling cycle, and plan generation time. The batch number, sampling code and plan generation time are written into the intermediate database, and the sampling cycle is sent to the sampling machine.

[0012] In some embodiments of the present application, the thermal power plant side unit is specifically used for:

[0013] The incoming coal quantity of the thermal power plant is obtained, and the incoming coal quantity is divided into multiple equal parts with the preset coal quantity as the node, and a corresponding number of sampling schemes are generated, and a sampling code corresponding to each sampling scheme is generated.

[0014] In some embodiments of the present application, the interface unit is also used for:

[0015] The sampler information of the sampler is read and updated in real time in the intermediate database, and written into the database of the plant-side unit of the thermal power plant.

[0016] In some embodiments of the present application, the interface unit is also used for:

[0017] The real-time weight, barrel number and fault signal of the sample of the collector are read, and the real-time weight, barrel number and fault signal of the sample of the collector are fed back to the database of the plant-side unit of the thermal power plant.

[0018] In some embodiments of the present application, the sampling machine is specifically used for:

[0019] When the same sampling code is sampling, the weight of the current sampling barrel is monitored in real time according to the sample barrel weight signal, and when the weight of the sampling barrel reaches the set value, the collector automatically replaces the sampling barrel;

[0020] When the collector collects different sampling codes, it immediately reallocates the sampling bucket for sampling.

[0021] In some embodiments of the present application, the interface unit further includes a PLC, and the PLC is used to:

[0022] Collect the accumulated pulse signals transmitted by the belt scale and add up the accumulated pulse signals;

[0023] When the accumulated amount reaches the node, a new sampling scheme is switched and sent to the sampler, and a new sampling code is sent to the collector.

[0024] In some embodiments of the present application, the PLC is also used for:

[0025] When the sampling of coal quantity in the same batch is completed, the cumulative quantity is reset to zero.

[0026] By applying the above technical scheme, the fully automatic coal sampling system includes: a thermal power plant side unit, which is used to generate multiple sampling schemes and sampling codes corresponding to each sampling scheme according to the amount of coal, and send the sampling scheme, the sampling code and the sampling period to the sampling machine; the sampling machine is used to send the sampling code and the sampling period to the collector when it is in operation; the collector includes multiple sample barrels for sampling according to the sampling period and the sampling code; the interface unit is used for data exchange between the thermal power plant side unit, the sampling machine and the collector; the thermal power plant side unit, the sampling machine and the collector are respectively connected to the interface unit, so as to realize the full automation of coal burning in the thermal power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A structural schematic diagram of a fully automatic coal sampling system proposed in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The present application embodiment provides a fully automatic coal sampling system, such as Figure 1 As shown, the system comprises:

[0034] A thermal power plant side unit, used to generate multiple sampling schemes and sampling codes corresponding to each sampling scheme according to the amount of incoming coal, and send the sampling schemes, the sampling codes and the sampling period to a sampling machine;

[0035] A sampler, used for sending the sampling code and the sampling period to a collector when in operation;

[0036] A collector, including a plurality of sample barrels, for sampling according to the sampling period and sampling code;

[0037] An interface unit, used for data exchange between the plant-side unit, the sampler and the collector of the thermal power plant;

[0038] The thermal power plant side unit, the sampler and the collector are respectively connected to the interface unit.

[0039] like Figure 1 As shown, the plant-side unit, collector and sampler of the thermal power plant are all connected to the interface unit, and when data is sent between the plant-side unit, collector and sampler of the thermal power plant, the data is sent to the interface unit, which is pre-stored in the intermediate database inside the interface unit and forwarded to other units according to the type or target of the data. Therefore, the plant-side unit, collector and sampler of the thermal power plant are connected together through the interface unit to realize the full automation of the sampling process.

[0040] In this embodiment, after coal arrives at the thermal power plant, the incoming coal quantity is first input into the intermediate database in the plant-side unit of the thermal power plant. The plant-side unit of the thermal power plant will split it into multiple sampling schemes according to the incoming coal quantity, and generate a sampling code corresponding to each sampling scheme. At the same time, the sampling scheme, sampling code and sampling period are sent to the sampling machine through the interface unit.

[0041] In this embodiment, the interface unit reads the sampling schemes in the intermediate database and sends them to the sampling machine in sequence.

[0042] In this embodiment, two samplers are provided to improve sampling efficiency. The interface unit divides the sampling plan into two and writes them into the intermediate databases of the two samplers respectively. When the samplers meet the operating conditions, they will start automatically and send the sampling code to the collector through the interface unit. After receiving the sampling code, the collector starts the sampling process.

[0043] In order to ensure the correctness of the sampling process, in some embodiments of the present application, the thermal power plant side unit is also used for:

[0044] A sampling plan table is generated according to the incoming coal information, and the sampling plan table includes batch number, sampling code, sampling cycle, and plan generation time. The batch number, sampling code and plan generation time are written into the intermediate database, and the sampling cycle is sent to the sampling machine.

[0045] In this embodiment, after the coal arrives at the thermal power plant, the incoming coal information is written into the intermediate database of the thermal power plant side unit. The thermal power plant side unit generates a sampling plan table based on the incoming coal information. The sampling plan table includes batch number, sampling code, sampling cycle, and plan generation time. The batch number, sampling code, and plan generation time are written into the intermediate database, and the sampling cycle is sent to the sampling machine at the same time. The sampling cycle is used by the sampling machine to monitor the sampling process and determine whether the coal of the same sampling plan has been sampled. At the same time, the data in the sampling plan table can also be used to compare with the data generated in the actual sampling process to determine whether the sampling process is correct, and for manual verification by subsequent staff, etc., to improve the correctness of the sampling process.

[0046] In order to ensure the correctness of the sampling process, in some embodiments of the present application, the interface unit further includes a PLC, and the PLC is used to:

[0047] Collect the accumulated pulse signals transmitted by the belt scale and add up the accumulated pulse signals;

[0048] When the accumulated amount reaches the node, a new sampling scheme is switched and sent to the sampler, and a new sampling code is sent to the collector.

[0049] In this embodiment, the sampling machine may include a sampling machine host computer and a PLC. The sampling machine host computer is used to receive data sent to the sampling machine by an external device and to send data to the outside, while the PLC is used to collect the cumulative pulse signal transmitted by the belt scale. In the embodiment of the present application, the switching of the sampling scheme can be divided into two schemes. One is to send both the sampling period and the sampling code to the collector. After the collector determines that the current sampling scheme is completed according to the current sampling period, it sends a completion signal to the sampling machine. After the sampling machine receives the signal, it sends a new sampling code to the collector. After the collector receives the sampling code, it performs sampling. The second is that the sampling machine PLC accumulates the cumulative pulse signal of the belt scale. After the accumulated amount reaches a node, it switches to a new sampling scheme and sends a new sampling code to the collector.

[0050] In order to further ensure the stable sampling, in some embodiments of the present application, the PLC is also used to:

[0051] When the sampling of coal quantity in the same batch is completed, the cumulative quantity is reset to zero.

[0052] In this embodiment, after the sampling of the coal quantity in the same batch is completed, the accumulated quantity is reset to zero and accumulated again.

[0053] In order to improve the sampling efficiency, in some embodiments of the present application, the thermal power plant side unit is specifically used for:

[0054] The incoming coal quantity of the thermal power plant is obtained, and the incoming coal quantity is divided into multiple equal parts with the preset coal quantity as the node, and a corresponding number of sampling schemes are generated, and a sampling code corresponding to each sampling scheme is generated.

[0055] In this embodiment, the incoming coal quantity is divided into multiple equal parts, and corresponding sampling schemes and sampling codes corresponding to each sampling scheme are generated. Taking 10,000 tons of coal as the preset coal quantity and 46,800 tons of coal as an example, 46,800 tons will generate 5 schemes, namely 10,000, 10,000, 10,000, 10,000, and 6,800. Each record corresponds to a different sampling code. The interface system reads the latest sampling scheme in turn, and then divides the read scheme into two, and writes them into the intermediate databases of the two samplers for standby. When the sampler has the operating conditions, it will start automatically. At this time, the sampling machine host computer will send the read sampling code to the collector, and the collector will allocate a bucket number to prepare for sampling, and at the same time send the read sampling period to the sampler plc. The part that is less than the preset coal quantity is calculated according to the preset coal quantity.

[0056] In order to further ensure the normal progress of sampling, in some embodiments of the present application, the interface unit is also used to:

[0057] The sampler information of the sampler is read and updated in real time in the intermediate database, and written into the database of the plant-side unit of the thermal power plant.

[0058] In this embodiment, the sampler transmits the sampler information to the intermediate database of the interface unit in real time, and the interface unit writes the collected sampler information into the database of the thermal power plant side unit to realize the thermal power plant side unit to monitor the status of the sampler in real time. The sampler information includes various operation signals of the sampler, alarm information, tank cleaning information, start and stop records and other information.

[0059] In order to further ensure the normal progress of sampling, in some embodiments of the present application, the interface unit is also used to:

[0060] The real-time weight, barrel number and fault signal of the sample of the collector are read, and the real-time weight, barrel number and fault signal of the sample of the collector are fed back to the database of the plant-side unit of the thermal power plant.

[0061] In this embodiment, the real-time weight of the sample, barrel number, fault signal, etc. of the collector are written into the database in real time by the upper computer software of the sampling machine, and the interface unit reads the data in real time and writes it into the plant-side database. The real-time weight signal of the sample should be fed back to the plant-side database in time, and the plant-side unit of the thermal power plant generates a weight curve according to the real-time sample weight of a single sampling, and issues an alarm when an abnormality occurs.

[0062] In order to realize automatic sampling of coal in thermal power plants, in some embodiments of the present application, the sampling machine is specifically used for:

[0063] When the same sampling code is sampling, the weight of the current sampling barrel is monitored in real time according to the sample barrel weight signal, and when the weight of the sampling barrel reaches the set value, the collector automatically replaces the sampling barrel;

[0064] When the collector collects different sampling codes, it immediately reallocates the sampling bucket for sampling.

[0065] In this embodiment, the collector samples according to the sampling code. When in the sampling process of the same sampling code, the sample bucket weight signal is collected to determine the weight of the current sampling bucket. When the weight of the sampling bucket reaches the set value, the collector automatically replaces the sampling bucket. When the collector receives a new sampling code, it immediately reallocates the sampling bucket for sampling, thereby realizing the automation of the sampling process.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A fully automatic coal sampling system, characterized in that: The system comprises: A thermal power plant side unit, used to generate multiple sampling schemes and sampling codes corresponding to each sampling scheme according to the amount of incoming coal, and send the sampling schemes, the sampling codes and the sampling period to a sampling machine; A sampler, used for sending the sampling code and the sampling period to a collector when in operation; A collector, including a plurality of sample barrels, for sampling according to the sampling period and sampling code; An interface unit, used for data exchange between the plant-side unit, the sampler and the collector of the thermal power plant; The thermal power plant side unit, the sampler and the collector are respectively connected to the interface unit.

2. The fully automatic coal sampling system according to claim 1, characterized in that: The thermal power plant side unit is also used for: A sampling plan table is generated according to the incoming coal information, and the sampling plan table includes batch number, sampling code, sampling cycle, and plan generation time. The batch number, sampling code and plan generation time are written into the intermediate database, and the sampling cycle is sent to the sampling machine.

3. The fully automatic coal sampling system according to claim 1, characterized in that: The thermal power plant side unit is specifically used for: The incoming coal quantity of the thermal power plant is obtained, and the incoming coal quantity is divided into multiple equal parts with the preset coal quantity as the node, and a corresponding number of sampling schemes are generated, and a sampling code corresponding to each sampling scheme is generated.

4. The fully automatic coal sampling system according to claim 1, characterized in that: The interface unit is also used for: The sampler information of the sampler is read and updated in real time in the intermediate database, and written into the database of the plant-side unit of the thermal power plant.

5. The fully automatic coal sampling system according to claim 1, characterized in that: The interface unit is also used for: The real-time weight, barrel number and fault signal of the sample of the collector are read, and the real-time weight, barrel number and fault signal of the sample of the collector are fed back to the database of the plant-side unit of the thermal power plant.

6. The fully automatic coal sampling system according to claim 1, characterized in that: The sampling machine is specifically used for: When the same sampling code is sampling, the weight of the current sampling barrel is monitored in real time according to the sample barrel weight signal, and when the weight of the sampling barrel reaches the set value, the collector automatically replaces the sampling barrel; When the collector collects different sampling codes, it immediately reallocates the sampling bucket for sampling.

7. The fully automatic coal sampling system according to claim 3, characterized in that: The interface unit further comprises a PLC, which is used to: Collect the accumulated pulse signals transmitted by the belt scale and add up the accumulated pulse signals; When the accumulated amount reaches the node, a new sampling scheme is switched and sent to the sampler, and a new sampling code is sent to the collector.

8. The fully automatic coal sampling system according to claim 7, characterized in that: The PLC is also used to: When the sampling of coal quantity in the same batch is completed, the cumulative quantity is reset to zero.

Images