Thermal state experiment device
By designing a thermal experimental device that contains the structure of smoke, the main flue structure, the ash collection device and the detection system, it solves the problem of difficulty reducing the heating area in the power station boiler, and realizes the effect of accelerating the design cycle and reducing costs. Essence
Patent Information
- Application Number
- CN202411522370.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-28
AI Technical Summary
When designing the internal structure of the power station boiler, it is difficult to effectively reduce the accumulation of dust on the heated surface, and the cold test is very different from the real environment, resulting in a long design cycle and high cost.
It proposes a hot experimental device, including the structure of flue gas, the main flue structure, the ash collection device and the detection system. By generating high -temperature flue gas, setting off the ash board, collecting ash, and detecting its weight and temperature, to come to it. Evaluate the ash blocking ability and heat loss of the ash.
Through the performance of different types and quantities of different types and quantities, the internal structure design of the boiler of the power station can be accelerated, the ash on the heating surface is reduced, and the design cost and cycle can be reduced.
Smart Images
Figure CN119374120A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of experimental equipment, in particular to a hot state experimental device. Background Art
[0002] Ash accumulation on the heating surface of power station boilers is unavoidable, but by reasonably setting ash baffles or adjusting the internal structure of the flue, the degree of ash accumulation on the heating surface can be reduced, thereby reducing the impact of ash accumulation on the heating surface, reducing safety hazards, and ensuring the thermal efficiency of the boiler.
[0003] At present, the question of how to set the ash baffle in the flue or what type of ash baffle to use often involves boiler system numerical simulation technology, which has a long cycle and high cost. Or cold tests are conducted, but there is a situation where the test conditions are quite different from the actual environment. Summary of the invention
[0004] The main purpose of the present invention is to provide a hot state experimental device, which aims to provide a hot state experimental device that can help speed up the internal structure design of power station boilers to reduce dust accumulation on the heating surface of power station boilers.
[0005] To achieve the above purpose, the hot state experimental device proposed by the present invention comprises:
[0006] A smoke generating structure, used to generate high-temperature smoke, wherein the smoke generating structure has a smoke exhaust port for exhausting the high-temperature smoke;
[0007] The main flue structure comprises a main body and at least one ash baffle, wherein the main body has a cavity, and an ash inlet, an ash outlet and an ash collecting port connected to the cavity, wherein the ash inlet is connected to the smoke outlet, and the ash collecting port is arranged at the bottom of the main body, and the ash baffle is detachably mounted on the main body to stop the ash moving from the ash inlet to the ash outlet;
[0008] an ash collecting device, used for collecting the ash discharged from the ash collecting port; and
[0009] The detection system includes multiple temperature measuring parts, a first metering part, a second metering part and a weighing part, one of the multiple temperature measuring parts is used to detect the temperature of the cavity on the side of the ash baffle plate close to the ash inlet, and another of the temperature measuring parts is used to detect the temperature of the cavity on the side of the ash baffle plate close to the ash outlet, the first metering part is arranged at the ash inlet, the second metering part is arranged at the ash outlet, and the weighing part is used to detect the weight of the ash collected by the ash collecting device.
[0010] In one embodiment, the main flue structure further includes a plurality of partitions extending in the up-down direction, the plurality of partitions divide the cavity into a plurality of branch flues connected to each other, the plurality of branch flues include a first branch flue, a second branch flue and a third branch flue connected to each other in sequence in a direction from the ash inlet to the ash outlet, and the ash baffle is arranged in the second branch flue;
[0011] The plurality of temperature measuring parts include a first temperature measuring part, a second temperature measuring part and a third temperature measuring part, wherein the first temperature measuring part is used to measure the temperature of the first sub-flue, the second temperature measuring part is used to measure the temperature of the second sub-flue, and the third temperature measuring part is used to measure the temperature of the third sub-flue;
[0012] An ash collecting port is arranged at the bottom of each branch flue, and a plurality of ash collecting devices are arranged, each ash collecting device is used to collect the ash discharged from the corresponding ash collecting port.
[0013] In one embodiment, the ash collecting device comprises a collecting bucket disposed below the ash collecting port, and a dust cover disposed around the collecting bucket and the ash collecting port; and / or,
[0014] The main flue structure also includes a switch valve arranged at the ash collecting port.
[0015] In one embodiment, the main flue structure further includes a heating portion installed on the main body, and the heating portion is used to heat the first sub-flue.
[0016] In one embodiment, the main flue structure also includes an installation structure, which includes a fixing part and an installation part, the fixing part is fixed to the inner side of the main body, the installation part is rotatably installed on the fixing part around a rotation axis in a first horizontal direction, and a slot is also provided on the installation part, which holds the ash baffle.
[0017] In one embodiment, a plurality of dust shields are provided, and the plurality of dust shields are spaced apart from each other upward and downward.
[0018] In one embodiment, the detection system further comprises an image acquisition device disposed in the main body, and the image acquisition device is used to acquire an image of the dust baffle in the cavity.
[0019] In one embodiment, the detection system further comprises a pressure detection device, and the pressure detection device is used to measure the pressure of the cavity.
[0020] In one embodiment, the hot state experimental device further comprises an induced draft fan, and an air inlet end of the induced draft fan is connected to the ash outlet.
[0021] In one embodiment, the hot state experimental device also includes a smoke recovery device, which includes an ash recovery container for accommodating liquid, and the ash recovery container is provided with a smoke inlet, a water inlet and a water outlet, and the smoke inlet is connected to the ash outlet.
[0022] In the technical solution of the present invention, the ash blocking capacity of the ash baffle can be detected through the data detected by the first metering part, the second metering part and the weighing part, and the influence of the ash baffle on the temperature of the high-temperature flue gas in the main flue structure can be accurately detected through the multiple temperature measuring parts. The ash baffle is detachably installed on the main body. When conducting multiple tests, different types of ash baffles can be selected, and the ash blocking capacity and heat loss influence of each type of ash baffle are recorded, so as to determine the type and quantity of the ash baffle, which can help speed up the internal structure design of the power station boiler to reduce ash accumulation on the heating surface of the power station boiler. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0024] Figure 1 A schematic structural diagram of an embodiment of a hot state experimental device provided by the present invention;
[0025] Figure 2 for Figure 1 Schematic diagram of various types of dust shields;
[0026] Figure 3 for Figure 1 Schematic diagram of the installation structure in the second branch flue;
[0027] Figure 4 for Figure 1 A schematic diagram of the second temperature measuring section in the second branch flue;
[0028] Figure 5 for Figure 1 A schematic diagram of an image acquisition device in the second branch flue;
[0029] Figure 6 for Figure 1 Structural schematic diagram of the installation structure.
[0030] Description of Figure Numbers:
[0031] 100. Hot state experimental device; 1. Smoke generating structure; 11. Feeding part; 12. Conveying device; 13. Feeding hopper; 14. Mixer; 15. Blower; 16. Heating device; 2. Main flue structure; 21. Main body; a. Cavity; a1. First sub-flue; a2. Second sub-flue; a3. Third sub-flue; b. Ash inlet; c. Ash outlet; d. Ash collecting port; 22. Ash baffle; 23. Partition; 24. Switch valve; 3. Ash collecting device; 31. Collection bucket; 32 , dust cover; 34, heating part; 35, installation structure; 351, fixing part; 352, installation part; 353, slot; 411, first temperature measuring part; 412, second temperature measuring part; 413, third temperature measuring part; 42, first metering part; 43, second metering part; 44, weighing part; 45, image acquisition device; 46, pressure detection device; 5, induced draft fan; 6, smoke recovery device; 61, ash recovery container; 61a, smoke inlet; 61b, water inlet; 61c, water outlet.
[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0036] At present, the question of how to set the ash baffle in the flue or what type of ash baffle to use often involves boiler system numerical simulation technology, which has a long cycle and high cost. Or cold tests are conducted, but there is a situation where the test conditions are quite different from the actual environment.
[0037] The present invention proposes a hot state experimental device, aiming to provide a hot state experimental device which can help to speed up the internal structure design of a power station boiler and reduce dust accumulation on the heating surface of the power station boiler.
[0038] See also Figure 1 In one embodiment of the present invention, the hot state experimental device 100 includes a smoke generating structure 1, a main flue structure 2, an ash collecting device 3 and a detection system. The smoke generating structure 1 is used to generate high-temperature smoke, and the smoke generating structure 1 has a smoke exhaust port for discharging high-temperature smoke; the main flue structure 2 includes a main body 21 and at least one ash baffle 22, the main body 21 has a cavity a, and an ash inlet b, an ash outlet c and an ash collecting port d connected to the cavity a, the ash inlet b is connected to the smoke exhaust port, the ash collecting port d is set at the bottom of the main body 21, and the ash baffle 22 is detachably installed on the main body 21, and is used to stop the smoke from being discharged. the ash moves from the ash inlet b toward the ash outlet c; the ash collecting device 3 is used to collect the ash discharged from the ash collecting port d; the detection system includes a plurality of temperature measuring parts, a first metering part 42, a second metering part 43 and a weighing part 44, one of the plurality of temperature measuring parts is used to detect the temperature of the cavity a on the side of the ash baffle plate 22 close to the ash inlet b, and another of the temperature measuring parts is used to detect the temperature of the cavity a on the side of the ash baffle plate 22 close to the ash outlet c, the first metering part 42 is arranged at the ash inlet b, the second metering part 43 is arranged at the ash outlet c, and the weighing part 44 is used to detect the weight of the ash collected by the ash collecting device 3.
[0039] It is understandable that the smoke generating structure 1 is a structure for generating high-temperature smoke. The smoke generating structure 1 has a smoke exhaust port for discharging the generated high-temperature smoke into the main flue structure 2.
[0040] The main flue structure 2 includes a main body 21 and at least one ash baffle 22 .
[0041] The main body 21 has a cavity a inside, and the ash inlet b, the ash outlet c and the ash collecting port d are connected thereto.
[0042] The ash inlet b is connected to the smoke exhaust port of the smoke generating structure 1, allowing high-temperature smoke to enter the main flue.
[0043] The ash collecting port d is located at the bottom of the main body 21 and is used to collect the ash formed in the main flue.
[0044] The ash baffle 22 is detachably mounted on the main body 21, and its function is to block the ash when it flows from the ash inlet b to the ash outlet c, preventing it from directly flowing out through the main flue.
[0045] It should be noted that there are many types of dust shields 22. Figures 2 to 4 , Figures 2 to 4 The ash baffles 22 are of different weight types. Different ash baffles 22 have different ash-blocking capabilities and different effects on heat conduction and heat radiation.
[0046] The ash collecting device 3 receives and collects the ash discharged from the ash collecting port d for subsequent processing or analysis.
[0047] The detection system includes a variety of measurement tools to monitor the operation status of the entire system:
[0048] The multiple temperature measuring parts are distributed at different positions, one of the temperature measuring parts is used to measure the temperature in the cavity a near the ash inlet b, and the other one is used to measure the temperature in the cavity a near the ash outlet c.
[0049] The first metering unit 42 is disposed at the ash inlet b, and may be used to measure the material flow or other related parameters entering the main flue.
[0050] The second metering part 43 is disposed at the ash outlet c, similar to the first metering part 42, and is used to monitor the outflowing material.
[0051] The weighing unit 44 is used to measure the weight of the ash collected by the ash collecting device 3 .
[0052] The detection principle of the hot state experimental device 100 is:
[0053] The flue gas generating structure 1 is used to simulate the high-temperature flue gas generated in the power plant boiler system. The high-temperature flue gas enters the cavity a from the exhaust port. When the ash moves from the ash inlet port b to the ash outlet port c, when it flows through the ash baffle plate 22, the ash baffle plate 22 will stop part of the ash, so that part of the ash falls to the ash collecting port d, and part of the ash is deposited on the ash baffle plate 22. The first metering part 42 is used to detect the amount of flue gas entering the cavity a, and the second metering part 43 is used to detect the amount of flue gas discharged. Then, the amount of ash in the main flue structure 2, which is stopped by the ash baffle plate 22 and falls to the ash collecting port d, and the amount of ash deposited on the ash baffle plate 22 can be accurately detected. The weighing part 44 can weigh the weight of the ash collected by the ash collecting device 3, so as to calculate the ash deposited on the ash baffle plate 22. Therefore, when selecting a certain type of ash baffle plate 22, the ash-blocking capacity of the ash baffle plate 22 of this type can be determined.
[0054] It should be noted that the selection and quantity of the ash baffles 22 are not limited to the size of the ash blocking mass, but are also related to the temperature of the flue gas. The temperature of the flue gas after being blocked by the ash baffles 22 will vary with the number and selection of the ash baffles 22. In an actual boiler system, it is necessary to use the high-temperature gas after being blocked by the ash baffles 22 to heat part of the system. In this case, it is also necessary to consider the heat loss after increasing the number of ash baffles 22 or selecting ash baffles 22 with stronger ash blocking ability. Therefore, the number and type of ash baffles 22 must also take into account the temperature of the temperature measuring part used to detect the temperature of the cavity a on the side of the ash baffle 22 close to the ash outlet c. When the temperature measured by the temperature measuring part reaches the preset temperature, the number and type of the ash baffles 22 are determined.
[0055] In the technical solution of the present invention, the ash blocking ability of the ash baffle 22 can be detected by the data detected by the first metering part 42, the second metering part 43 and the weighing part 44, and the influence of the ash baffle 22 on the temperature of the high-temperature flue gas in the main flue structure 2 can be accurately detected through the multiple temperature measuring parts. The ash baffle 22 is detachably installed on the main body 21. When conducting multiple tests, different types of ash baffles 22 can be selected, and the ash blocking ability and heat loss influence of each type of ash baffle 22 are recorded, so that the type and quantity of the ash baffle 22 can be determined, which can help speed up the internal structure design of the power station boiler to reduce ash accumulation on the heating surface of the power station boiler.
[0056] Specifically, in the present embodiment, the main flue structure 2 further includes a plurality of partitions 23 extending in the up-down direction, the plurality of partitions 23 divide the cavity a into a plurality of connected branch flues, the plurality of branch flues include a first branch flue a1, a second branch flue a2 and a third branch flue a3 which are sequentially connected in the direction from the ash inlet b to the ash outlet c, the ash baffle 22 is arranged in the second branch flue a2; the plurality of temperature measuring parts include a first temperature measuring part 411, a second temperature measuring part 412 and a third temperature measuring part 413, the first temperature measuring part 411 is used to measure the temperature of the first branch flue a1, the second temperature measuring part 412 is used to measure the temperature of the second branch flue a2, and the third temperature measuring part 413 is used to measure the temperature of the third branch flue a3; an ash collecting port d is arranged at the bottom of each branch flue, a plurality of ash collecting devices 3 are arranged, and each ash collecting device 3 is used to collect the ash discharged from the corresponding ash collecting port d.
[0057] The partitions 23 are arranged in the main flue structure 2, and the multiple partitions 23 divide the cavity a into several interconnected but relatively independent spaces, which are called sub-flue. Such arrangement can be used to simulate different working conditions.
[0058] The branch flues are arranged in sequence from the ash inlet b to the ash outlet c. The first branch flue a1, the second branch flue a2 and the third branch flue a3 are arranged in sequence from the ash inlet b to the ash outlet c.
[0059] The ash baffle 22 is particularly arranged in the second sub-flue a2 to prevent or reduce the ash from directly passing through the part, so as to allow more ash to settle or change the flow path for subsequent analysis.
[0060] The first temperature measuring unit 411 is responsible for measuring the temperature in the first sub-flue a1 , so as to obtain the temperature of the high-temperature flue gas before it flows through the ash baffle 22 .
[0061] The second temperature measuring unit 412 is responsible for monitoring the temperature of the second sub-flue a2 (ie, the location of the ash baffle 22 ).
[0062] The third temperature measuring unit 413 is used to obtain the temperature data of the third sub-flue a3, so as to obtain the temperature of the high-temperature flue gas after passing through the ash baffle 22, so as to determine the influence of the ash baffle 22 on heat.
[0063] By monitoring the temperature of each of the sub-flue ducts, the heat distribution and the influence of the ash baffle 22 on the flow field can be better understood.
[0064] An ash collecting port d is provided at the bottom of each of the branch flues, and each of the branch flues can collect the deposited ash individually.
[0065] Correspondingly, in order to match this layout, the ash collecting device 3 is also designed to be multiple, and each of the ash collecting devices 3 corresponds to an ash collecting port d, which is specifically used to collect the ash from the corresponding branch flue.
[0066] By setting up a plurality of the branch flues, the high-temperature flue gas can fully interact with the plurality of the ash baffles 22, and the second branch flue a2 can provide sufficient space for the ash baffles 22, and the third branch flue a3 can be set corresponding to the heating surface. In this way, the cavity a is divided into different functional areas, which can more accurately simulate the phenomena in the actual industrial process and provide important experimental basis for optimizing related processes.
[0067] Specifically, in this embodiment, the ash collecting device 3 includes a collecting bucket 31 arranged below the ash collecting port d, and a dust cover 32 arranged on the periphery of the collecting bucket 31 and the ash collecting port d; and / or, the main flue structure 2 also includes a switch valve 24 arranged at the ash collecting port d.
[0068] In this way, a portion of the dust can fall from the dust collecting port d into the collecting bucket 31 , and the dust cover 32 prevents the dust from spilling into the air when it falls.
[0069] When the hot state experimental device 100 simulates the operation of the boiler, the switch valve 24 can be closed. When the hot state experimental device 100 finishes simulating the operation of the boiler, the switch valve 24 can be opened to allow the ash in the ash collecting port d to fall into the collecting bucket 31.
[0070] It should also be noted that the smoke generating structure 1 includes a feed part 11, a conveying device 12, a feed hopper 13, a mixer 14, a blower 15 and a heating device 16. The conveying device 12 is used to convey the material conveyed by the feed part 11 to the feed hopper 13. Driven by gravity and airflow, the air outlet end of the blower 15 is connected with the discharge port of the feed hopper 13, and the material to be heated is blown to the heating device 16 for heating, and high-temperature smoke is generated. The heating device 16 is provided with a smoke outlet, and the smoke outlet is connected with the smoke exhaust port, so that the dust in the mixer 14 can be fully mixed and then sent to the cavity a of the main body 21.
[0071] Of course, the smoke generating structure 1 is not limited to the above examples, and technicians in the relevant field may make other changes under the guidance of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same or similar to those of the embodiments of this specification, they should be included in the protection scope of the embodiments of this specification.
[0072] For example, the heating device 16 may be an ignition device that can burn the material to form high-temperature smoke, and the blower 15 may be a suction blower 15 and the like.
[0073] Furthermore, the main flue structure 2 further includes a heating portion 34 installed on the main body 21 , and the heating portion 34 is used to heat the first sub-flue a1 .
[0074] In order to ensure that the end of the cavity a close to the ash inlet b can accurately reach the preset temperature, the flue gas can be preliminarily preheated by the heating device 16, and then the flue gas in the first branch flue a1 can be heated again by the heating part 34 to achieve the purpose of precise temperature control and accurately simulate the temperature conditions of the boiler.
[0075] In this embodiment, the main flue structure 2 also includes an installation structure 35, and the installation structure 35 includes a fixing portion 351 and a mounting portion 352. The fixing portion 351 is fixed to the inner side of the main body 21, and the mounting portion 352 is rotatably installed on the fixing portion 351 around a rotation axis in a first horizontal direction. A slot 353 is also provided on the installation portion 352, and the slot 353 holds the ash baffle 22.
[0076] The mounting portion 352 is used to support or fix the dust baffle 22. "The mounting portion 352 is rotatably mounted on the inner side of the main body 21 around the first horizontal rotation axis." The first horizontal rotation axis refers to a horizontal axis around which the mounting portion 352 can rotate.
[0077] The mounting portion 352 is rotatably mounted on the inner side of the main body 21 , indicating that the mounting portion 352 is mounted in the main structure of the main flue and can rotate freely around an axis, thereby driving the ash baffle 22 to be rotatably arranged around the rotation axis in the first horizontal direction.
[0078] The mounting portion 352 is further provided with the slot 353 for fixing the dust shield 22 to facilitate quick disassembly and assembly of the dust shield 22 .
[0079] Because the position and angle of the dust baffle 22 are also related to the dust blocking ability, the angle of the dust baffle 22 is adjusted by rotating the mounting portion 352 to adjust the position of the dust baffle 22, so that it is possible to further calculate at which angle the dust baffle 22 is located to achieve the best dust blocking effect.
[0080] Furthermore, in the present embodiment, a plurality of dust shields 22 are provided, and the plurality of dust shields 22 are arranged vertically and spaced apart upwardly.
[0081] The dust shield plates 22 are provided in plurality and are arranged vertically and spaced apart from each other. Here, “upward and downward” refers to the vertical direction, indicating that the dust shield plates 22 are arranged along the vertical direction.
[0082] Interval arrangement: refers to that the plurality of dust shields 22 are separated in the vertical direction and have a certain interval. Such an arrangement may be for improving the filtering effect or preventing the accumulation of dust and particulate matter.
[0083] Such arrangement can effectively block dust and particles, and at the same time can ensure smooth airflow and avoid performance degradation caused by blockage. At the same time, the influence of different numbers of dust shielding plates 22 on the dust shielding effect can be determined.
[0084] In this embodiment, the detection system further includes an image acquisition device 45 disposed on the main body 21 , and the image acquisition device 45 is used to acquire an image of the dust baffle 22 in the cavity a.
[0085] The detection system further includes an image acquisition device 45 disposed in the main body 21. The image acquisition device 45 is disposed in the main body 21: it means that the image acquisition device 45 is installed in the main structure part (main body 21). The image acquisition device 45 is usually a camera or other type of sensor that can capture and record images. It is used to acquire the image of the dust baffle 22 in the cavity a.
[0086] The image of the dust baffle 22: This indicates that the main task of the image acquisition device 45 is to photograph and record the state and appearance of the dust baffle 22 in the cavity a, so as to monitor the dust accumulation, damage degree or other relevant parameters of the dust baffle 22 in real time. By setting the image acquisition device 45 to capture the image of the dust baffle 22 in the cavity a, it is helpful to monitor the working state of the dust baffle 22 in real time, so as to observe the state of the dust baffle 22.
[0087] The image acquisition device 45 can be a camera, an industrial camera, etc., and can be specifically designed according to actual conditions, and this specification embodiment does not limit this.
[0088] Furthermore, in this embodiment, the detection system further includes a pressure detection device 46, and the pressure detection device 46 is used to measure the pressure of the cavity a. The pressure detection device 46 includes a pressure gauge arranged at the top of the cavity a, which can monitor the pressure value in the cavity a in real time and provide test pressure information data.
[0089] Furthermore, in this embodiment, the hot state experimental device 100 further includes an induced draft fan 5, and an air inlet end of the induced draft fan 5 is connected to the ash outlet c.
[0090] The main function of the induced draft fan 5 is to guide the gas flow by generating negative pressure, and is usually used for ventilation or exhaust.
[0091] The air inlet end of the induced draft fan 5 refers to the air inlet of the induced draft fan 5, that is, the place where the induced draft fan 5 sucks in air or gas.
[0092] The air inlet end of the induced draft fan 5 is connected to the ash outlet c, so the air inlet of the induced draft fan 5 is connected to the ash outlet c of the equipment, and the induced draft fan 5 will inhale gas from the ash outlet c, so that the waste gas or dust and other substances in the cavity a can be discharged through the ash outlet c.
[0093] With such a setting, the pressure in the cavity a can be adjusted so that the pressure in the cavity a maintains a certain negative pressure, which can effectively extract the exhaust gas or dust in the equipment, ensure the smooth progress of the experimental process, better simulate the real situation of the boiler, and improve the safety and effectiveness of the experiment.
[0094] Furthermore, in this embodiment, the hot state experimental device 100 also includes a smoke recovery device 6, the smoke recovery device 6 includes an ash recovery container 61 for accommodating liquid, and the ash recovery container 61 is provided with a smoke inlet 61a, a water inlet 61b and a water outlet 61c, and the smoke inlet 61a is connected to the ash outlet c.
[0095] The function of the ash recovery container 61 is to carry out subsequent treatment of the ash brought out by the induced draft fan 5: first, a certain amount of cold water is injected into the ash recovery container 61, and then the ash brought out by the induced draft fan 5 is cooled and settled at the bottom of the ash recovery container 61, and the water above the ash at the bottom of the ash recovery container 61 is discharged, and the slurry settled in the ash recovery container 61 can be fished out and then processed.
[0096] The method for selecting the dust baffle 22 by the hot state experimental device 100 is as follows:
[0097] (1) Preparation
[0098] A certain volume of tap water is injected into the ash recovery container 61; all valves in the hot experimental device 100 are closed; each weighing part 44 is reset to zero; the ash baffle 22 is installed on the inner wall of the second sub-flue a2; the interior of the first sub-flue a1 is heated; the heating device 16 is heated; ash of suitable particle size is selected and poured into the feeding part 11; the blower 15 and the induced draft fan 5 are turned on to form a certain negative pressure in the flue.
[0099] (2) Start working
[0100] When the temperature in the first sub-flue a1 reaches a certain value (ie, T1), the conveying device 12 is turned on to introduce the soot into the flue.
[0101] After a period of time (t), the conveying device 12 is closed to stop conveying ash into the flue, and the readings of the first metering part 42 and the second metering part 43 are recorded respectively (recorded as m in and m out respectively), and the tail temperature of the third sub-flue a3 (ie T3) is recorded.
[0102] The blower 15 and the induced draft fan 5 are turned off in sequence, and then the switch valves 24 at the plurality of ash collecting ports d are opened, and the readings of the weighing parts 44 are recorded respectively (respectively recorded as g1, g2, and g3).
[0103] The above recorded data are analyzed, and it is determined whether the ash baffle 22 needs to be adjusted based on the analysis results and the ash state observed by the video.
[0104] If not needed, end the work.
[0105] How to determine whether the dust shield 22 needs to be adjusted:
[0106] First, check whether T3 is not lower than the required value T. If not, it needs to be adjusted and a secondary test is conducted;
[0107] If it is satisfied, it is necessary to determine whether g2 is greater than g1 and g3. If not, it is necessary to make adjustments and conduct a second test;
[0108] If satisfied, stop the test.
[0109] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A hot state experimental device, characterized in that: include: A smoke generating structure, used to generate high-temperature smoke, wherein the smoke generating structure has a smoke exhaust port for exhausting the high-temperature smoke; The main flue structure comprises a main body and at least one ash baffle, wherein the main body has a cavity, and an ash inlet, an ash outlet and an ash collecting port connected to the cavity, wherein the ash inlet is connected to the smoke outlet, and the ash collecting port is arranged at the bottom of the main body, and the ash baffle is detachably mounted on the main body to stop the ash moving from the ash inlet to the ash outlet; An ash collecting device, used for collecting the smoke ash discharged from the ash collecting port; as well as, The detection system includes multiple temperature measuring parts, a first metering part, a second metering part and a weighing part, one of the multiple temperature measuring parts is used to detect the temperature of the cavity on the side of the ash baffle plate close to the ash inlet, and another of the temperature measuring parts is used to detect the temperature of the cavity on the side of the ash baffle plate close to the ash outlet, the first metering part is arranged at the ash inlet, the second metering part is arranged at the ash outlet, and the weighing part is used to detect the weight of the ash collected by the ash collecting device.
2. The hot state experimental device according to claim 1, characterized in that: The main flue structure further comprises a plurality of partitions extending in the up-down direction, the plurality of partitions dividing the cavity into a plurality of branch flues connected to each other, the plurality of branch flues comprising a first branch flue, a second branch flue and a third branch flue connected to each other in sequence in the direction from the ash inlet to the ash outlet, the ash baffle being arranged in the second branch flue; The plurality of temperature measuring parts include a first temperature measuring part, a second temperature measuring part and a third temperature measuring part, wherein the first temperature measuring part is used to measure the temperature of the first sub-flue, the second temperature measuring part is used to measure the temperature of the second sub-flue, and the third temperature measuring part is used to measure the temperature of the third sub-flue; An ash collecting port is arranged at the bottom of each branch flue, and a plurality of ash collecting devices are arranged, each ash collecting device is used to collect the ash discharged from the corresponding ash collecting port.
3. The hot state experimental device according to claim 1, characterized in that: The ash collecting device comprises a collecting bucket disposed below the ash collecting port, and a dust cover disposed around the collecting bucket and the ash collecting port; and / or, The main flue structure also includes a switch valve arranged at the ash collecting port.
4. The hot state experimental device according to claim 1, characterized in that: The main flue structure further includes a heating portion installed on the main body, and the heating portion is used to heat the first sub-flue.
5. The hot state experimental device according to claim 1, characterized in that: The main flue structure also includes an installation structure, which includes a fixing part and a mounting part. The fixing part is fixed to the inner side of the main body, and the mounting part is rotatably installed on the fixing part around a rotation axis in a first horizontal direction. A slot is also provided on the mounting part, and the slot holds the ash baffle.
6. The hot state experimental device according to claim 1, characterized in that: A plurality of ash baffles are provided, and the plurality of ash baffles are arranged vertically and spaced apart upwardly.
7. The hot state experimental device according to claim 1, characterized in that: The detection system further comprises an image acquisition device disposed on the main body, and the image acquisition device is used to acquire an image of the dust baffle in the cavity.
8. The hot state experimental device according to claim 1, characterized in that: The detection system further comprises a pressure detection device, and the pressure detection device is used to measure the pressure of the cavity.
9. The hot state experimental device according to claim 1, characterized in that: The hot state experimental device further comprises an induced draft fan, and an air inlet end of the induced draft fan is connected to the ash outlet.
10. The hot state experimental device according to claim 1, characterized in that: The hot state experimental device also includes a smoke recovery device, which includes an ash recovery container for accommodating liquid. The ash recovery container is provided with a smoke inlet, a water inlet and a water outlet, and the smoke inlet is connected to the ash outlet.