Sample sampling device and sampling method for boiler performance test
By designing a combinable sample collection device for boiler performance testing, the problems of inaccurate and dangerous sample collection in boiler performance testing have been solved, achieving both safety and accuracy in sample collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-03-27
AI Technical Summary
In existing boiler performance tests, the sampling of raw coal, fly ash, and slag samples suffers from problems such as inaccurate representativeness, easy clogging of equipment, and high operational risks, which affect the accuracy of test results.
A sample collection device for boiler performance testing was designed, including first and second samplers, which are combined into sampling tubes and collection tanks of different structures by threaded connection, for sampling at different locations to ensure the representativeness and safety of the samples.
The sample sampling device features a simple structure, is easy to use, and provides good sample representativeness. It avoids device blockage and operational hazards, thereby improving sampling accuracy and safety.
Smart Images
Figure CN121740522A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of boiler performance test, in particular to a sample sampling device and method for boiler performance test. BACKGROUND
[0002] In the performance test of a power station boiler, especially in the boiler efficiency test, raw coal, fly ash and large slag samples need to be sampled. Sample sampling is a very important work. If the sampled samples are not representative and accurate, the accuracy of the test results will be directly affected.
[0003] At present, raw coal sampling is carried out at the coal pipe under the coal feeder. Mostly, an iron pipe is welded on the coal pipe, and the outlet of the iron pipe is only blocked with a cap or plug. When raw coal sampling is needed, the plug is opened and raw coal is sprayed for sampling operation. During the sampling process, raw coal is sprayed, the blocking is not strict, and at the same time, the iron pipe is easy to be blocked due to the entry of large particles of raw coal.
[0004] At present, there are three main methods for fly ash sampling: one is to use the impact type fly ash sampler installed at the bottom of the air preheater outlet flue; the second is to use the self-suction type fly ash sampling device installed on the side of the air preheater outlet flue; the third is to use the sampling hole installed on the pipeline between the dust collector hopper and the warehouse pump. The first method will cause pipe blockage due to the moisture absorption and clogging of fly ash in the pipe after a long time of use, eventually causing the sampling device to be unable to sample. The second method will cause serious wear of the sampling device due to long-time flue gas erosion, resulting in the sampling device being unable to sample. The third method has the risk of scalding due to high temperature of fly ash, and requires the cooperation of multiple people, and dust pollution will occur on site.
[0005] At present, large slag sampling is carried out at the tail of the dry slag removal system. The dry slag removal system uses air cooling, and the whole system uses negative pressure design. When sampling, the observation hole at the tail of the dry slag removal system needs to be opened for sampling, but due to the negative pressure of the system, the leakage of air from the observation hole to the dry slag removal system often sucks away the large slag sample, so that the collected large slag sample is not representative, and in order to obtain enough sample quantity, long-time repeated sampling is required, which brings unsafe factors to the test personnel.
[0006] This section aims to provide background or context for the embodiments of the present application stated in the claims. The description herein is not admitted to be prior art merely because it is included in this section. SUMMARY
[0007] The purpose of the present application is to provide a sample sampling device and method for boiler performance test, which can at least solve one of the above technical problems existing in the current sample sampling device and method for boiler performance test.
[0008] The embodiment of the present application provides a sample sampling device for boiler performance test, which comprises a first sampler, the first sampler comprises a first collecting tank, a first sampling pipe, a first plug and a first handle, one end of the first collecting tank is blocked by a metal plate, and the other end is provided with a first internal thread, the first sampling pipe is a tubular structure with an axial half cut in the middle, one end of the first sampling pipe is provided with a first external thread, the first external thread is matched with the first internal thread, so that the first sampling pipe and the first collecting tank are connected, the other end of the first sampling pipe is provided with a second internal thread, the second internal thread is matched with a second external thread at one end of the first plug, so that the first sampling pipe and the first plug are connected, and the other end of the first plug is provided with a first threaded hole, the first threaded hole is matched with a third external thread arranged at one end of the first handle, so that the first handle and the first plug are connected.
[0009] In some embodiments, the sampling device further comprises a second sampler, the second sampler comprises a second collecting tank, a second sampling pipe, a second plug and a second handle, one end of the second collecting tank is blocked by a metal plate, and the other end is provided with a third internal thread, the second sampling pipe is a tubular structure with an axial half cut in the middle, one end of the second sampling pipe is provided with a fourth external thread, the fourth external thread is matched with the third internal thread, so that the second sampling pipe and the second collecting tank are connected, the other end of the second sampling pipe is provided with a fourth internal thread, the fourth internal thread is matched with a fifth external thread at one end of the second plug, so that the second sampling pipe and the second plug are connected, and the other end of the second plug is provided with a second threaded hole, the second threaded hole is matched with a sixth external thread arranged at one end of the second handle, so that the second handle and the second plug are connected.
[0010] In some embodiments, the first plug is provided with a first mark away from the side surface of the first sampling pipe, and the first mark is used for indicating the opening direction of the first sampling pipe, and / or the second plug is provided with a second mark away from the side surface of the second sampling pipe, and the second mark is used for indicating the opening direction of the second sampling pipe.
[0011] In some embodiments, the first handle comprises a first connecting rod and a first cross rod, the third external thread is arranged at one end of the first connecting rod, and the first cross rod is connected to the other end of the first connecting rod, and / or the second handle comprises a second connecting rod and a second cross rod, the sixth external thread is arranged at one end of the second connecting rod, and the second cross rod is connected to the other end of the second connecting rod.
[0012] In some embodiments, the second sampling tube has a smaller size than the first sampling tube, such that the second sampling tube can be inserted into the first sampling tube from the side of the first sampling tube, and the other end of the second plug on the second sampling tube is provided with a seventh external thread that matches a second internal thread on the first sampling tube, such that the second sampling tube is threadedly connected with the first sampling tube.
[0013] The embodiment of the present application provides a sample sampling method for boiler performance test, based on the sample sampling device for boiler performance test in any of the above embodiments, and the method comprises the following steps: The opening on the side of the sampling device is directed to the coal flow falling from the coal belt, so that the raw coal enters the sampling device; The sampling device is pulled out of the coal flow, and then the collecting tank of the sampling device is unscrewed, so that the raw coal in the sampling device is poured into a sampling bag; If there is residual raw coal in the sampling device, the sampling device is knocked or the plug of the sampling device is opened to clean the sampling device; If the sampling amount is not enough, the above operation is repeated until the raw coal sampling amount is enough.
[0014] The embodiment of the present application provides a sample sampling method for boiler performance test, based on the sample sampling device for boiler performance test in any of the above embodiments, and the method comprises the following steps: The test hole on the top wall of the flue is opened, the sampling device is inserted into the flue from the test hole, and the opening on the side of the sampling device is directed to the airflow, so that the fly ash collides with the wall of the sampling tube and is finally collected in the collecting tank; After sampling is completed, the sampling device is slowly pulled out of the test hole, and then the collecting tank is unscrewed, so that the fly ash can be poured into a sampling bag; If there is residual fly ash in the sampling device, the sampling device is knocked or the plug is opened to clean the sampling device; If the sampling amount is not enough, the above operation is repeated until the fly ash sampling amount is enough.
[0015] The embodiment of the present application provides a sample sampling method for boiler performance test, based on the sample sampling device for boiler performance test in any of the above embodiments, and the method comprises the following steps: After the second sampling tube, the second plug and the second handle are connected together, the second sampling tube is inserted into the first sampling tube of the first sampler, and the second sampling tube is threadedly connected with the first sampling tube by matching the seventh external thread of the second plug with the second internal thread of the first sampling tube, so that the first sampling tube and the second sampling tube are combined into a complete circular pipeline, one end of the circular pipeline is through, the other end of the circular pipeline is blocked and connected with the second handle, and a first sampling device combination is formed. inserting the first sampling device combination from one end of the sampling pipe base; rotating the ball valve handle to open the ball valve, so that the coal pipe is connected with the outside; grasping the second handle and inserting the first sampling device combination into the coal pipe through the sampling pipe base; repeating the insertion multiple times, so that the raw coal in the coal pipe enters into the first sampling device combination from one end of the first sampling device combination; slowly extracting the first sampling device combination from the sampling pipe base, closing the ball valve, and then inverting the first sampling device combination, so as to pour the raw coal in the first sampling device combination into the sampling bag; if there is residual raw coal in the first sampling device combination, knocking the first sampling device combination or opening the plug to clean the first sampling device combination; if the sampling amount is not enough, repeating the above operation until the raw coal sampling amount is enough.
[0016] The embodiment of the present application provides a sample sampling method for boiler performance test, based on the sample sampling device for boiler performance test described in the above embodiment, the method comprises: connecting the first collecting tank and the first sampling pipe together, and connecting the second sampling pipe, the second plug and the second handle together; inserting the whole structure formed by the second sampling pipe, the second plug and the second handle into the first sampling pipe, and threadedly connecting the second sampling pipe and the first sampling pipe through cooperation of the seventh external thread on the second plug and the second internal thread of the first sampling pipe, so that the openings of the first sampling pipe and the second sampling pipe coincide, forming a second sampling device combination; opening the test hole on the vertical flue wall surface, horizontally inserting the second sampling device combination into the flue from the test hole, so that the opening of the second sampling device combination is directly opposite to the airflow direction, and the fly ash collides with the inner wall of the second sampling pipe to stagnate in the second sampling device combination; after sampling is completed, rotating the first sampling pipe and / or the second sampling pipe, so that the first sampling pipe and the second sampling pipe are combined into a complete circular pipe with plugs at both ends, so that the sample in the second sampling device combination does not escape; slowly extracting the second sampling device combination from the test hole, changing the second sampling device combination from the horizontal state to the vertical state, and the fly ash in the second sampling device combination will be collected into the collecting tank, and then the collecting tank is unscrewed, so that the fly ash can be poured into the sampling bag; if there is residual fly ash in the second sampling device combination, knocking the second sampling device combination or opening the plug to clean the second sampling device combination; if the sampling amount is not enough, repeating the above operation until the fly ash sampling amount is enough.
[0017] The embodiment of the present application provides a sample sampling method for boiler performance test, which is based on the sample sampling device for boiler performance test. The first collecting tank and the first sampling pipe are connected together, and the second sampling pipe, the second plug and the second handle are connected together; The whole structure formed by the second sampling pipe, the second plug and the second handle is inserted into the first sampling pipe, the second sampling pipe is threadedly connected with the first sampling pipe through cooperation of the seventh external thread on the second plug and the second internal thread of the first sampling pipe, the openings of the first sampling pipe and the second sampling pipe are coincided, and the second sampling device combination is formed; The test hole on the top wall of the flue is opened, the second sampling device combination is vertically inserted into the flue from the test hole, the opening of the second sampling device combination is opposite to the airflow, the fly ash is stalled on the inner wall of the second sampling pipe and finally collected into the first collecting tank; After sampling is completed, the first sampling pipe and / or the second sampling pipe are rotated, so that the first sampling pipe and the second sampling pipe are combined into a complete circular pipe with plugs at two ends, so that the sample in the second sampling device combination cannot be scattered; The second sampling device combination is slowly taken out of the test hole, and then the first collecting tank is unscrewed, so that the fly ash can be poured into a sampling bag; If there is residual fly ash in the second sampling device combination, the second sampling device combination is knocked or the plug is opened to clean the second sampling device combination; If the sampling amount is not enough, the above operation is repeated until the fly ash sampling amount is enough.
[0018] The embodiment of the present application provides a sample sampling method for boiler performance test, which is based on the sample sampling device for boiler performance test. The first collecting tank and the first sampling pipe are connected together, and the second sampling pipe, the second plug and the second handle are connected together; The whole structure formed by the second sampling pipe, the second plug and the second handle is inserted into the first sampling pipe, the second sampling pipe is threadedly connected with the first sampling pipe through cooperation of the seventh external thread on the second plug and the second internal thread of the first sampling pipe, the openings of the first sampling pipe and the second sampling pipe are coincided, and the second sampling device combination is formed; The observation hole at the tail of the dry slag removal system is opened, the second sampling device combination is inserted from the observation hole, the opening of the second sampling device combination is opposite to the falling large slag, and the large slag enters the second sampling device combination; After the sampling is completed, the first sampling tube and / or the second sampling tube are rotated so that the first sampling tube and the second sampling tube are combined into a complete two-end plug circular pipeline, so that the sample in the second sampling device combination does not dissipate; The second sampling device combination is slowly pulled out of the observation hole, the second sampling device combination is transformed into a vertical state, large slag in the second sampling device combination is collected into the first collection tank, and then the first collection tank is unscrewed, so that the large slag can be poured into a sampling bag; If there is residual large slag in the second sampling device combination, the second sampling device combination is knocked or the second plug is opened to clean the second sampling device combination; If the sampling amount is not enough, the above operation is repeated until the large slag sampling amount is sufficient.
[0019] The sample sampling device and the sampling method for boiler performance test provided by the embodiment of the application have simple structure and are convenient to use, can be used for sampling of raw coal, fly ash and large slag samples in the boiler performance test, have small volume and light weight, are convenient to transport and carry, and after calibration, the fly ash sample obtained has more accurate carbon content. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.
[0021] Figure 1 A structure schematic diagram of a sample sampling device for boiler performance test provided by the embodiment of the application.
[0022] Figure 2 A structure schematic diagram of a sample sampling device for boiler performance test provided by the embodiment of the application.
[0023] Figure 3 A flowchart of a sample sampling method for boiler performance test provided by the embodiment of the application.
[0024] Figure 4 A flowchart of a sample sampling method for boiler performance test provided by the embodiment of the application.
[0025] Figure 5 A horizontal flue fly ash sample sampling schematic diagram provided by the embodiment of the application.
[0026] Figure 6 A flowchart of a sample sampling method for boiler performance test provided by the embodiment of the application.
[0027] Figure 7 A raw coal sampling schematic diagram provided for an embodiment of the present application.
[0028] Figure 8 A flowchart schematic diagram of a sample sampling method for a boiler performance test provided for an embodiment of the present application.
[0029] Figure 9 A flowchart schematic diagram of a sample sampling method for a boiler performance test provided for an embodiment of the present application.
[0030] Figure 10 A flowchart schematic diagram of a sample sampling method for a boiler performance test provided for an embodiment of the present application.
[0031] Figure 11 A large slag sample sampling schematic diagram provided for an embodiment of the present application. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be described clearly and completely 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 of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0033] Specific embodiments of the present application are disclosed in detail below with reference to the following description and drawings, indicating the ways in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope to the specific embodiments described. Many changes, modifications, and equivalents will be apparent to those skilled in the art in view of the principles of the present application as disclosed herein. Embodiments of the present application include all such changes, modifications, and equivalents.
[0034] Features described and / or illustrated with respect to one implementation can be used in one or more other implementations in the same or similar manner, in combination with or in place of features in other implementations, and / or with respect to other described or illustrated implementations.
[0035] It should be emphasized that the term "comprises / comprising" when used in this specification is taken to mean the presence of stated features, integers, steps or components but not to the exclusion of one or more other features, integers, steps, components or groups thereof.
[0036] In order to solve at least one of the above problems in the prior art, the present application provides a sample sampling device for a boiler performance test, such as Figure 1As shown, the boiler performance test sample sampling device 001 includes a first sampler 1, which includes a first collection tank 11, a first sampling tube 12, a first plug 13, and a first handle 14. One end of the first collection tank 11 is sealed with a metal plate, and the other end is provided with a first internal thread. The first sampling tube 12 is a tubular structure with an axial half-cut in the middle. One end of the first sampling tube 12 is provided with a first external thread, which mates with the first internal thread to connect the first sampling tube 12 and the first collection tank 11. The other end of the first sampling tube 12 is provided with a second internal thread, which mates with the second external thread at one end of the first plug 13 to connect the first sampling tube 12 and the first plug 13. The other end of the first plug 13 is provided with a first threaded hole, which mates with the third external thread at one end of the first handle 14 to connect the first handle 14 and the first plug 13.
[0037] Specifically, such as Figure 1 As shown, the first sampling tube 12 can be a hollow circular metal pipe, sealed by a first plug 13 on the right side. A first handle 14 is located on the right side of the first plug 13. To increase the sampling cross-sectional area of the first sampling tube 12, the middle part of the first sampling tube 12 is axially half-cut, retaining a complete semi-circular sampling cross-section. The inner surface of the remaining semi-circular cross-section is the sampling section. The first collecting tank 11 can be a section of hollow circular metal pipe, sealed by a metal plate on the left side to ensure a seal. The right side has a first internal thread that mates with the first external thread on the left side of the first sampling tube 12, allowing the first collecting tank 11 and the first sampling tube 12 to be threadedly connected. The first collecting tank 11 is used to store samples. The right end of the first sampling tube 12 has a second internal thread that mates with the second external thread on the left side of the first plug 13, allowing the first sampling tube 12 and the first plug 13 to be threadedly connected. The first sampling tube 12 is used for sample collection and storage. The first plug 13 can be a solid cylinder. The first plug 13 is used to seal the first sampling tube 12 and the first handle 14. The first plug 13 has a second external thread on the left side, which mates with the internal thread on the right side of the first sampling tube 12, so that the first sampling tube 12 and the first plug 13 can be threaded together. The first plug 13 has a first threaded hole on the right side, which mates with the third external thread on the left side of the first handle 14, so that the first plug 13 and the first handle 14 can be threaded together.
[0038] The boiler performance test sample sampling device 001 provided in this application embodiment has a simple structure and is easy to use. It can be used to sample raw coal, fly ash and slag samples in boiler performance tests. At the same time, the sampling device is small in size and light in weight, making it easy to transport and carry. After calibration, the carbon content of the fly ash sample obtained by the sampling device is more accurate.
[0039] likeFigure 2 As shown, in some embodiments, the sampling device 001 may further include a second sampler 2, which includes a second collection tank, a second sampling tube, a second plug, and a second handle; one end of the second collection tank is sealed with a metal plate, and the other end is provided with a third internal thread; the second sampling tube is a tubular structure with an axial half-cut in the middle, and one end of the second sampling tube is provided with a fourth external thread, which mates with the third internal thread to connect the second sampling tube and the second collection tank; the other end of the second sampling tube is provided with a fourth internal thread, which mates with a fifth external thread at one end of the second plug to connect the second sampling tube and the second plug; the other end of the second plug is provided with a second threaded hole, which mates with a sixth external thread at one end of the second handle to connect the second handle and the second plug.
[0040] Specifically, such as Figure 2 As shown, the composition and structure of the second sampler 2 and the first sampler 1 can be the same, except that the external dimensions of the second sampler 2 can be slightly smaller than those of the first sampler 1, thus ensuring that the second sampler 2 can be inserted into the first sampler 1 from the side. The second sampler 2 and the first sampler 1 can be used individually or in combination.
[0041] In some embodiments, a first mark (not shown in the figure) is provided on the side of the first plug 13 away from the first sampling tube 12, the first mark being used to indicate the opening direction of the first sampling tube 12. Similarly, a second mark may be provided on the side of the second plug away from the second sampling tube, the second mark being used to indicate the opening direction of the second sampling tube.
[0042] like Figure 1 As shown, in some embodiments, the first handle 14 includes a first connecting rod 141 and a first crossbar 142, the third external thread is disposed at one end of the first connecting rod 141, and the first crossbar 142 is connected to the other end of the first connecting rod 141.
[0043] Specifically, such as Figure 1 As shown, the first connecting rod 141 has a third external thread on its left side, which mates with the first threaded hole on the right side of the first plug 13, allowing the first plug 13 and the first handle 14 to be threadedly connected. The first connecting rod 141 also has an external thread on its right side, which mates with the threaded hole in the middle of the first crossbar 142, allowing the first connecting rod 141 and the first crossbar 142 to be threadedly connected. The first handle 14 facilitates gripping the first sampler 1 and can also be used to fix the first sampler 1.
[0044] Similarly, the second handle may include a second connecting rod and a second crossbar, with the sixth external thread disposed at one end of the second connecting rod and the second crossbar connected to the other end of the second connecting rod. Further details will not be elaborated here.
[0045] In some embodiments, the size of the second sampling tube is smaller than that of the first sampling tube, so that the second sampling tube can be inserted into the first sampling tube from the side of the first sampling tube, and the other end of the second plug on the second sampling tube is provided with a seventh external thread, which engages with the second internal thread on the first sampling tube, so that the second sampling tube is threadedly connected to the first sampling tube.
[0046] Specifically, such as Figure 2 As shown, the composition and structure of the first and second sampling tubes can be identical. The second sampling tube is slightly smaller than the first sampling tube, thus ensuring that the second sampling tube can be inserted into the first sampling tube from the side. The plug of the second sampling tube has an external thread on the right side, which mates with the internal thread on the right side of the first sampling tube, allowing the second sampling tube to be inserted into the first sampling tube and threadedly connected to it.
[0047] The boiler performance testing sample collection device provided in this application embodiment has at least the following usage methods: The first type, where each sampler is used individually: the collection tank, sampling tube, plug, and handle are combined into a sampler, which can be used to collect samples.
[0048] The second method involves assembling the first sampling device: connecting the sampling tube, plug, and handle of the second sampler together, then inserting the assembled unit into the sampling tube of the first sampler. The second sampler is then threaded together with the first sampler's sampling tube by engaging the external thread on the right side of the plug with the internal thread on the right side of the plug. After tightening the threads, the first and second sampler sampling tubes combine to form a complete circular pipe. The entire sampling device assembly appears as a single hollow circular metal pipe, with the left side open and the right side sealed and equipped with a handle.
[0049] The third method involves assembling the second sampling device: connecting the collection tank and sampling tube of the first sampler together, and connecting the sampling tube, plug, and handle of the second sampler together. The second sampler is inserted into the first sampler, and the external thread on the right side of the second sampler plug mates with the internal thread on the right side of the first sampler's sampling tube, thus threading the second sampler to the first sampler. After tightening the threads, the first and second sampler tubes combine to form a complete circular pipe. After tightening the threads, rotate them half a turn in the opposite direction to overlap the sampling sections of the first and second sampler tubes, forming a new sampling device. After sampling, tighten the threads again, ensuring that the sample in the sampling device does not escape, thus preventing sample leakage.
[0050] like Figure 3 As shown in the embodiments of this application, a sample collection method for boiler performance testing is also provided. Based on the sample collection device for boiler performance testing described in any of the above embodiments, it is used to collect raw coal samples at the coal conveyor belt. The method includes: S11. Position the opening on the side of the sampling tube of the sampling device directly opposite the coal flow falling from the coal conveyor belt, so that the raw coal enters the sampling device. S12. Extract the sampling device from the coal flow, and then unscrew the collection tank of the sampling device to pour the raw coal in the sampling device into the sampling bag. S13. If there is residual raw coal in the sampling device, knock on the sampling device or open the plug of the sampling device to clean the sampling device. S14. If the amount of raw coal sample taken at one time is insufficient, repeat the above operation until the amount of raw coal sample taken is sufficient.
[0051] Specifically, raw coal is transported to the top of the raw coal bunker by a conveyor belt, and then a plow scrapes the raw coal off the conveyor belt into the raw coal bunker. Sampling can be performed during the process of raw coal falling from the conveyor belt to the raw coal bunker. Either the first sampler or the second sampler can be used for raw coal sampling. Specifically: first, assemble the sampler's collection tank, sampling tube, plug, and handle; then, position the sampling section of the sampling device directly over the coal flow falling from the conveyor belt, allowing the raw coal to enter the sampling device; then, withdraw the sampling device from the coal flow, and unscrew the collection tank to pour the raw coal from the sampling device into a sampling bag; if there is residual raw coal in the sampling device, it can be cleaned by tapping the sampling device with a hammer or opening the plug; if the sample volume is insufficient in one attempt, the above operation can be repeated until a sufficient amount of raw coal is sampled.
[0052] like Figure 4As shown in the embodiments of this application, a sample collection method for boiler performance testing is also provided. Based on the sample collection device for boiler performance testing described in any of the above embodiments, it is used to collect fly ash samples at a horizontal flue. The method includes: S21. Open the test hole on the top wall of the flue and insert the sampling device into the flue through the test hole. The opening on the side of the sampling tube of the sampling device faces the direction of the airflow. The fly ash hits the wall of the sampling tube and stops falling, and finally collects in the collection tank. S22. After sampling is completed, slowly pull the sampling device out of the test hole, and then unscrew the collection tank so that the fly ash can be poured into the sampling bag. S23. If there is residual fly ash in the sampling device, tap the sampling device or open the plug to clean the sampling device. S24. If the sample size is insufficient, repeat the above operation until the fly ash sample size is sufficient.
[0053] Specifically, such as Figure 5 As shown, flue gas containing fly ash flows horizontally in a horizontal flue. A test hole A is opened on the top wall of the flue, allowing a sampling device (first sampler 1 / second sampler 2) to be inserted into the flue to sample fly ash. Either the first sampler 1 or the second sampler 2 can be used for fly ash sampling. The specific operation is as follows: First, assemble the collection tank, sampling tube, plug, and handle of the first sampler 1 / second sampler 2 together; then, open test hole A on the top wall of the flue, insert the sampling device into the flue through test hole A, with the sampling section of the sampling device facing the direction of the airflow. The fly ash will impact the sampling section and stop falling, eventually collecting in the collection tank; after sampling, slowly pull the sampling device out of the test hole, then unscrew the collection tank to pour the fly ash into the sampling bag; if there is residual fly ash in the sampling device, it can be tapped with a hammer or the plug can be opened to clean the sampling device; if the sample volume is insufficient at one time, the above operation can be repeated until the fly ash sample volume is sufficient. Multiple sampling devices can also be used simultaneously for sampling.
[0054] like Figure 6 As shown in the embodiments of this application, a sample sampling method for boiler performance testing is provided. Based on the sample sampling device for boiler performance testing described in the above embodiments, it is used to sample raw coal at the coal feeder's lower coal pipe. The method includes: S31. After connecting the second sampling tube, the second plug, and the second handle together, insert them into the first sampling tube of the first sampler. The seventh external thread of the second plug is engaged with the second internal thread of the first sampling tube to connect the second sampling tube to the first sampling tube. This makes the first sampling tube and the second sampling tube combine into a complete circular pipe. One end of the circular pipe is open, and the other end of the circular pipe is sealed and connected to the second handle to form the first sampling device assembly. S32. Insert the first sampling device assembly from one end of the sampling tube socket; S33. Turn the ball valve handle to open the ball valve, so that the coal pipe is connected to the outside. S34. Grasp the second handle and insert the first sampling device assembly into the coal pipe through the sampling tube seat; S35. Repeat the insertion multiple times so that the raw coal in the coal pipe enters the first sampling device assembly from one end of the first sampling device assembly; S36. Slowly pull the first sampling device assembly out of the sampling tube seat, close the ball valve, and then invert the first sampling device assembly to pour the raw coal in the first sampling device assembly into the sampling bag. S37. If there is residual raw coal in the first sampling device assembly, knock on the first sampling device assembly or open the plug to clean the first sampling device assembly. S38. If the amount of raw coal sample taken at one time is insufficient, repeat the above operation until the amount of raw coal sample taken is sufficient.
[0055] Specifically, an iron pipe (sampling pipe seat) is welded to the coal feeder's lower coal pipe. A ball valve is located in the middle of the sampling pipe seat for sealing. Opening the ball valve connects the coal feeder's lower coal pipe to the outside, and raw coal will spray out from the tail of the sampling pipe seat. The first sampling device combination can be used for raw coal sampling. For example... Figure 7 As shown, the first sampling device assembly 001A is first formed by connecting the sampling tube, plug, and handle of the second sampler together; then, the second sampler is inserted into the sampling tube of the first sampler, and the second sampler is threadedly connected to the first sampler sampling tube by engaging the external thread on the right side of the plug with the internal thread on the right side of the sampling tube. After tightening the threads, the first and second sampler sampling tubes are combined into a complete circular pipe. The entire sampling device assembly is presented as a hollow circular metal pipe, with the left side of the pipe open and the right side sealed and equipped with a handle.
[0056] Then, insert the first sampling device assembly 001A into one end of the sampling tube seat; then turn the ball valve handle to open the ball valve, connecting the coal supply pipe to the outside. Next, grasp the handle of the first sampling device assembly 001A and insert it into the coal supply pipe through the sampling tube seat. Repeat the insertion several times, allowing the raw coal in the coal supply pipe to enter the first sampling device assembly 001A from its left end face. Then, slowly withdraw the first sampling device assembly 001A from the sampling tube seat, close the ball valve, and then invert the first sampling device assembly 001A to pour the raw coal into the sampling bag. If there is residual raw coal in the first sampling device assembly 001A, you can use a hammer to tap the sampling device or open the plug to clean the first sampling device assembly 001A. If the sample volume is insufficient in one operation, repeat the above operation until the raw coal sample volume is sufficient.
[0057] like Figure 8 As shown in the embodiments of this application, a sample collection method for boiler performance testing is also provided. Based on the sample collection device for boiler performance testing described in the above embodiments, it is used to collect fly ash samples at the vertical flue. The method includes: S41. Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; S42. Insert the integral structure formed by the second sampling tube, the second plug, and the second handle into the first sampling tube, and connect the second sampling tube and the first sampling tube by engaging the seventh external thread on the second plug with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap to form a second sampling device assembly. S43. Open the test hole on the vertical flue wall and insert the second sampling device assembly horizontally into the flue through the test hole, so that the opening of the second sampling device assembly faces the direction of airflow. The fly ash hits the inner wall of the second sampling tube and stops, remaining in the second sampling device assembly. S44. After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular pipe with plugs at both ends, so that the sample in the second sampling device assembly will not be released. S45. Slowly pull the second sampling device assembly out of the test hole and change the second sampling device assembly from a horizontal state to a vertical state. The fly ash in the second sampling device assembly will be collected in the collection tank. Then unscrew the collection tank so that the fly ash can be poured into the sampling bag. S46. If there is residual fly ash in the second sampling device assembly, tap the second sampling device assembly or open the plug to clean the second sampling device assembly. S47. If the sample size is insufficient, repeat the above operation until the fly ash sample size is sufficient.
[0058] Specifically, flue gas containing fly ash flows downwards in a vertical flue, with test holes on the flue wall. A sampling device can be inserted into the flue to sample the fly ash. A second sampling device combination can be used for fly ash sampling. The specific operation is as follows: First, form the second sampling device combination: connect the collection tank and sampling tube of the first sampler together, and connect the sampling tube, plug, and handle of the second sampler together; then insert the second sampler into the first sampler, and connect the second sampler to the first sampler by engaging the external thread on the right side of the second sampler plug with the internal thread on the right side of the first sampler sampling tube; after tightening the threads, the first and second sampler sampling tubes combine to form a complete circular pipe; after tightening the threads, rotate them half a turn in the opposite direction so that the sampling sections of the first and second sampler sampling tubes overlap, forming a new sampling device; open the test hole on the vertical flue wall, and insert the sampling device horizontally into the flue through the test hole. Inside, the sampling section of the sampling device faces the direction of the airflow. Fly ash impacts the sampling section and stops, remaining inside the sampling device. After sampling, tighten the threads. The first and second sampler tubes combine to form a complete circular pipe with plugs at both ends, ensuring the sample does not escape. Slowly pull the sampling device out of the test hole, changing it from a horizontal to a vertical position. The fly ash in the sampling device will collect in a collection tank. Then, unscrew the collection tank to pour the fly ash into a sampling bag. If there is residual fly ash in the sampling device, it can be tapped with a hammer or the plugs opened to clean it. If the sample volume is insufficient in one attempt, repeat the above steps until a sufficient amount of fly ash is collected. Multiple sampling devices can also be used simultaneously.
[0059] like Figure 9 As shown in the embodiments of this application, a sample collection method for boiler performance testing is provided. Based on the sample collection device for boiler performance testing described in any of the above embodiments, it is used to collect fly ash samples at a horizontal flue. The method includes: S51. Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; S52. Insert the integral structure formed by the second sampling tube, the second plug, and the second handle into the first sampling tube, and connect the second sampling tube and the first sampling tube by engaging the seventh external thread on the second plug with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap to form a second sampling device assembly. S53. Open the test hole on the top wall of the flue, and vertically insert the second sampling device assembly into the flue through the test hole. The opening of the second sampling device assembly faces the direction of the airflow. The fly ash hits the inner wall of the second sampling tube and stops, and finally collects into the first collection tank. S54. After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular pipe with plugs at both ends, so that the sample in the second sampling device assembly will not be scattered. S55. Slowly pull the second sampling device assembly out of the test hole, and then unscrew the first collection tank so that the fly ash can be poured into the sampling bag. S56. If there is residual fly ash in the second sampling device assembly, knock on the second sampling device assembly or open the plug to clean the second sampling device assembly. S57. If the sample size is insufficient, repeat the above operation until the fly ash sample size is sufficient.
[0060] Specifically, the flue gas containing fly ash flows horizontally in a horizontal flue, and test holes are opened on the top wall of the flue. A sampling device can be inserted into the flue to collect fly ash samples. A second sampling device can be used in combination for fly ash sampling. The specific operation is as follows: First, assemble the second sampling device: connect the collection tank and sampling tube of the first sampler together, and connect the sampling tube, plug, and handle of the second sampler together. Insert the second sampler into the first sampler, and connect the second sampler to the first sampler by engaging the external thread on the right side of the second sampler plug with the internal thread on the right side of the first sampler's sampling tube. After tightening the threads, the first and second sampler sampling tubes combine to form a complete circular pipe. After tightening the threads, rotate them half a turn in the opposite direction so that the sampling sections of the first and second sampler sampling tubes overlap, forming a new sampling device.
[0061] Then open the test hole on the top wall of the flue, and insert the sampling device vertically into the flue through the test hole. The sampling section of the sampling device is facing the direction of the airflow. The fly ash hits the sampling section and stops falling, eventually collecting in the collection tank.
[0062] After sampling is completed, tighten the threads. The sampling tubes of the first and second samplers are combined into a complete circular pipe with plugs at both ends, thus ensuring that the sample in the sampling device will not escape.
[0063] Next, the sampling device is slowly pulled out of the test hole, and then the collection tank is unscrewed so that the fly ash can be poured into the sampling bag.
[0064] If there is residual fly ash in the sampling device, you can tap the sampling device with a hammer or open the plug to clean the sampling device.
[0065] If the sample size is insufficient in one attempt, the above steps can be repeated until a sufficient amount of fly ash is collected. Multiple sampling devices can also be used simultaneously.
[0066] The fly ash sampling device provided in this application embodiment is an impact-type fly ash sampling device. Its principle is to collect samples by utilizing the impact of fly ash onto the sampling section and causing it to stop falling. Because it cannot achieve isokinetic sampling, the representativeness of its samples is also poor. The isokinetic fly ash sampling device utilizes the principle of isokinetic sampling, adjusting the output of the intake pump to make the intake velocity equal to the flue gas velocity, thus achieving isokinetic sampling. This sampling method can achieve accurate sampling, but the sampling time is long, making it unsuitable for fly ash sampling in boiler performance tests. Based on this, this application embodiment also provides a method for calibrating the carbon content of fly ash samples, the method comprising: Step 1: Use a fly ash isokinetic sampling device to sample fly ash and measure the carbon content C0 of the fly ash.
[0067] Step 2: Use the fly ash sampling device in this patent to sample the fly ash and measure the carbon content C1 of the fly ash.
[0068] Step 3: Calculate the carbon content measurement correction coefficient k of the fly ash sampling device in this application embodiment according to the formula k=C0 / C1.
[0069] Step 4: In subsequent measurement work, the fly ash carbon content obtained by sampling and measuring fly ash using the fly ash sampling device in this application embodiment is multiplied by k to obtain a more accurate fly ash carbon content.
[0070] like Figure 10 As shown in the embodiments of this application, a sample collection method for boiler performance testing is also provided. Based on the sample collection device for boiler performance testing described in any of the above embodiments, it is used to collect large slag samples at the tail end of a dry slag removal system. The method includes: S61. Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; S62. Insert the integral structure formed by the second sampling tube, the second plug, and the second handle into the first sampling tube, and connect the second sampling tube and the first sampling tube by engaging the seventh external thread on the second plug with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap to form a second sampling device assembly. S63. Open the observation hole at the end of the dry slag removal system, insert the second sampling device assembly through the observation hole, with the opening of the second sampling device assembly facing the falling slag, so that the slag enters the second sampling device assembly. S64. After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular pipe with plugs at both ends, so that the sample in the second sampling device assembly will not be scattered. S65. Slowly pull the second sampling device assembly out of the observation hole, change the second sampling device assembly to a vertical state, and the large residue in the second sampling device assembly will be collected into the first collection tank. Then unscrew the first collection tank so that the large residue can be poured into the sampling bag. S66. If there are large slag residues in the second sampling device assembly, knock on the second sampling device assembly or open the second plug to clean the second sampling device assembly. S67. If the sample size is insufficient in one operation, repeat the above operation until the sample size of the slag is sufficient.
[0071] Specifically, such as Figure 11 As shown, the large slag is transported to the tail end by a steel belt from the dry slag removal system and falls into the slag bin. Samples can be taken during the slag's descent from the steel belt into the slag bin. The second sampling device, combination 001B, can be used for large slag sampling. The specific operation is as follows: First, the second sampling device assembly 001B is formed: the collection tank and sampling tube of the first sampler are connected together, and the sampling tube, plug, and handle of the second sampler are connected together. The second sampler is inserted into the first sampler, and the second sampler is threadedly connected to the first sampler by engaging the external thread on the right side of the plug with the internal thread on the right side of the sampling tube. After tightening the threads, the sampling tubes of the first and second samplers combine to form a complete circular pipe. After tightening the threads, rotate them half a turn in the opposite direction so that the sampling sections of the sampling tubes of the first and second samplers overlap, forming a second sampling device assembly 001B.
[0072] Then open the observation hole at the tail of the dry slag removal system and insert the second sampling device assembly 001B through the observation hole. The sampling section of the second sampling device assembly 001B is facing the falling slag, so that the slag enters the second sampling device assembly 001B.
[0073] After sampling is completed, tighten the threads. The first sampler tube and the second sampler tube are combined into a complete circular pipe with plugs at both ends, thus ensuring that the sample in the second sampling device assembly 001B will not escape.
[0074] Slowly pull the second sampling device assembly 001B out of the observation hole and change the second sampling device assembly 001B to a vertical position. The large slag in the second sampling device assembly 001B will be collected into the collection tank. Then unscrew the collection tank so that the large slag can be poured into the sampling bag.
[0075] If there is any large residue in the second sampling device assembly 001B, the second sampling device assembly 001B can be tapped with a hammer or the plug can be opened to clean the second sampling device assembly 001B.
[0076] If the sample size is insufficient in one attempt, the above steps can be repeated until the sample size is sufficient.
[0077] This application also provides a method for storing a sampling device, specifically including: connecting the collection tank and sampling tube of a first sampler together, and connecting the collection tank, sampling tube, and plug of a second sampler together. The second sampler is inserted into the first sampler, and the second sampler is threadedly connected to the first sampler by engaging the external thread on the right side of the plug with the internal thread on the right side of the sampling tube. The handle connecting rod and crossbar of the first sampler, and the handle connecting rod and crossbar of the second sampler are disassembled and placed into the sampling tube. This minimizes the overall volume of the sampling device, facilitating transportation and carrying.
[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0079] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments in this specification. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0080] This application uses specific embodiments to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A sample sampling device for boiler performance testing, characterized in that, It includes a first sampler, which comprises a first collection tank, a first sampling tube, a first plug, and a first handle; One end of the first collection tank is sealed with a metal plate, and the other end is provided with a first internal thread; The first sampling tube is a tubular structure with an axial half-cut in the middle. One end of the first sampling tube is provided with a first external thread, which is matched with the first internal thread to connect the first sampling tube and the first collection tank. The other end of the first sampling tube is provided with a second internal thread, which engages with the second external thread at one end of the first plug, thereby connecting the first sampling tube and the first plug. The other end of the first plug is provided with a first threaded hole, which engages with a third external thread provided at one end of the first handle, thereby connecting the first handle and the first plug.
2. The sampling device according to claim 1, characterized in that, The sampling device further includes a second sampler, which includes a second collection tank, a second sampling tube, a second plug, and a second handle; One end of the second collection tank is sealed with a metal plate, and the other end is provided with a third internal thread; The second sampling tube is a tubular structure with an axial half-cut in the middle. One end of the second sampling tube is provided with a fourth external thread, which cooperates with the third internal thread to connect the second sampling tube and the second collection tank. The other end of the second sampling tube is provided with a fourth internal thread, which engages with a fifth external thread at one end of the second plug, thereby connecting the second sampling tube and the second plug. The other end of the second plug is provided with a second threaded hole, which engages with a sixth external thread provided at one end of the second handle, thereby connecting the second handle and the second plug.
3. The sampling device according to claim 2, characterized in that, A first mark is provided on the side of the first plug away from the first sampling tube, the first mark being used to indicate the opening direction of the first sampling tube; and / or A second mark is provided on the side of the second plug away from the second sampling tube. The second mark is used to indicate the opening direction of the second sampling tube.
4. The sampling device according to claim 2, characterized in that, The first handle includes a first connecting rod and a first crossbar, the third external thread is disposed at one end of the first connecting rod, and the first crossbar is connected to the other end of the first connecting rod; and / or The second handle includes a second connecting rod and a second crossbar, with the sixth external thread disposed at one end of the second connecting rod and the second crossbar connected to the other end of the second connecting rod.
5. The sampling device according to any one of claims 2 to 4, characterized in that, The second sampling tube is smaller than the first sampling tube, so that the second sampling tube can be inserted into the first sampling tube from the side. The other end of the second plug on the second sampling tube is provided with a seventh external thread, which engages with the second internal thread of the first sampling tube, so that the second sampling tube is threadedly connected to the first sampling tube.
6. A method for sampling samples for boiler performance testing, characterized in that, Based on the boiler performance testing sample sampling device according to any one of claims 1 to 5, the method includes: The opening on the side of the sampling tube of the sampling device is aligned with the coal flow falling from the coal conveyor belt, so that the raw coal enters the sampling device. The sampling device is extracted from the coal flow, and the collection tank of the sampling device is unscrewed to pour the raw coal in the sampling device into the sampling bag. If there is residual raw coal in the sampling device, knock on the sampling device or open the plug of the sampling device to clean the sampling device; If the sample size is insufficient in one attempt, repeat the above steps until the raw coal sample size is sufficient.
7. A method for sampling samples for boiler performance testing, characterized in that, Based on the boiler performance testing sample sampling device according to any one of claims 1 to 5, the method includes: Open the test hole on the top wall of the flue and insert the sampling device into the flue through the test hole. The opening on the side of the sampling tube of the sampling device faces the direction of the airflow. The fly ash hits the wall of the sampling tube and stops falling, and finally collects in the collection tank. After sampling is completed, slowly pull the sampling device out of the test hole, and then unscrew the collection tank so that the fly ash can be poured into the sampling bag; If there is residual fly ash in the sampling device, tap the sampling device or open the plug to clean the sampling device. If the sample size is insufficient in one attempt, repeat the above steps until the fly ash sample size is sufficient.
8. A method for sampling samples for boiler performance testing, characterized in that, Based on the sample sampling device for boiler performance testing as described in claim 5, the method includes: After connecting the second sampling tube, the second plug, and the second handle together, insert them into the first sampling tube of the first sampler. The seventh external thread of the second plug mates with the second internal thread of the first sampling tube, thus threading the second sampling tube to the first sampling tube. This allows the first and second sampling tubes to be combined into a complete circular pipe. One end of the circular pipe is open, and the other end is sealed and connected to the second handle, forming the first sampling device assembly. Insert the first sampling device assembly from one end of the sampling tube socket; Turn the ball valve handle to open the ball valve, thus connecting the coal feed pipe to the outside. Grasp the second handle and insert the first sampling device assembly into the coal pipe through the sampling tube seat; Repeated insertion multiple times allows raw coal in the coal pipe to enter the first sampling device assembly from one end; Slowly pull the first sampling device assembly out of the sampling tube seat, close the ball valve, and then invert the first sampling device assembly to pour the raw coal in the first sampling device assembly into the sampling bag. If there is residual raw coal in the first sampling device assembly, knock on the first sampling device assembly or open the plug to clean the first sampling device assembly; If the sample size is insufficient in one attempt, repeat the above steps until the raw coal sample size is sufficient.
9. A method for sampling samples for boiler performance testing, characterized in that, Based on the sample sampling device for boiler performance testing as described in claim 5, the method includes: Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; The integral structure formed by the second sampling tube, the second plug, and the second handle is inserted into the first sampling tube, and the second sampling tube is threadedly connected to the first sampling tube by the seventh external thread on the second plug engaging with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap, forming a second sampling device assembly. Open the test hole on the vertical flue wall and insert the second sampling device assembly horizontally into the flue through the test hole, so that the opening of the second sampling device assembly faces the direction of airflow. The fly ash hits the inner wall of the second sampling tube and stops, remaining inside the second sampling device assembly. After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular tube with plugs at both ends, so that the sample in the second sampling device assembly will not be released. Slowly pull the second sampling device assembly out of the test hole and change the second sampling device assembly from a horizontal state to a vertical state. The fly ash in the second sampling device assembly will be collected in the collection tank. Then unscrew the collection tank so that the fly ash can be poured into the sampling bag. If there is residual fly ash in the second sampling device assembly, tap the second sampling device assembly or open the plug to clean the second sampling device assembly. If the sample size is insufficient in one attempt, repeat the above steps until the fly ash sample size is sufficient.
10. A method for sampling samples for boiler performance testing, characterized in that, Based on the sample sampling device for boiler performance testing as described in claim 5, the method includes: Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; The integral structure formed by the second sampling tube, the second plug, and the second handle is inserted into the first sampling tube, and the second sampling tube is threadedly connected to the first sampling tube by the seventh external thread on the second plug engaging with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap, forming a second sampling device assembly. Open the test hole on the top wall of the flue, and vertically insert the second sampling device assembly into the flue through the test hole. The opening of the second sampling device assembly faces the direction of the airflow. The fly ash hits the inner wall of the second sampling tube and stops, eventually collecting in the first collection tank. After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular tube with plugs at both ends, so that the sample in the second sampling device assembly will not be released. The second sampling device assembly is slowly pulled out from the test hole, and then the first collection tank is unscrewed so that the fly ash can be poured into the sampling bag; If there is residual fly ash in the second sampling device assembly, tap the second sampling device assembly or open the plug to clean the second sampling device assembly. If the sample size is insufficient in one attempt, repeat the above steps until the fly ash sample size is sufficient.
11. A method for sampling samples for boiler performance testing, characterized in that, Based on the sample sampling device for boiler performance testing as described in claim 5, the method includes: Connect the first collection tank and the first sampling tube together, and connect the second sampling tube, the second plug and the second handle together; The integral structure formed by the second sampling tube, the second plug, and the second handle is inserted into the first sampling tube, and the second sampling tube is threadedly connected to the first sampling tube by the seventh external thread on the second plug engaging with the second internal thread of the first sampling tube, so that the openings of the first sampling tube and the second sampling tube overlap, forming a second sampling device assembly. Open the observation hole at the end of the dry slag removal system, insert the second sampling device assembly through the observation hole, with the opening of the second sampling device assembly facing the falling slag, so that the slag enters the second sampling device assembly; After sampling is completed, rotate the first sampling tube and / or the second sampling tube so that the first sampling tube and the second sampling tube are combined into a complete circular tube with plugs at both ends, so that the sample in the second sampling device assembly will not be released. Slowly pull the second sampling device assembly out of the observation hole, change the second sampling device assembly to a vertical position, and the large slag in the second sampling device assembly will be collected into the first collection tank. Then unscrew the first collection tank so that the large slag can be poured into the sampling bag. If there are large residues in the second sampling device assembly, tap the second sampling device assembly or open the second plug to clean the second sampling device assembly; If the sample size is insufficient in one attempt, repeat the above steps until the sample size is sufficient.