Boiler coal metering auxiliary device
By designing a boiler coal metering auxiliary device in the boiler system and detecting the flow of the coal seam using diffuse photoelectric switches, the problem of inaccurate calculation of coal inlets in each boiler in the existing technology is solved, and accurate statistics of coal inlets and power supply coal consumption is achieved analysis.
Patent Information
- Application Number
- CN202421192835.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing boiler coal metering system cannot accurately calculate the amount of coal inlet for each boiler over a period of time, resulting in inconvenience in the analysis of coal consumption for power supply and economic benefits research.
A boiler coal metering auxiliary device is designed, including a plougher, a coal layer detection component and a controller. The coal seam flow is detected by diffuse reflection photoelectric switch, and the coal inlet volume of each boiler is calculated through the timing module.
Accurate calculation and statistics of the coal inlet volume of each boiler are achieved, which facilitates further research on coal consumption and economic benefits of power supply, and improves the stability and detection accuracy of the system.
Smart Images
Figure CN222273207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler coal metering, in particular to a boiler coal metering auxiliary device. Background Art
[0002] Power plants are large coal-burning companies. Currently, there are many types of coal used in power plants. Each type of coal has a large difference in calorific value. In order to improve economic benefits, it is necessary to mix and burn coal; that is, add coal of different calorific values (different types of coal) to the same coal bunker, mix and burn coal in a certain proportion to meet the calorific value required for power generation, and meet various environmental protection requirements. Due to the price difference of coal with different calorific values, the economic benefits brought by mixed coal burning are considerable. However, if the mixed burning ratio is wrong, it will directly affect the safe operation of the unit. Therefore, it is very important to ensure an accurate mixed burning ratio.
[0003] At present, there is only one total belt scale for the coal-raising belt, which can only calculate the total amount of coal raised within a period of time, but cannot calculate the amount of coal entering each boiler within a period of time; at the same time, the boiler coal feeder is an auger-type coal feeder, and it is impossible to install a separate furnace belt scale, which brings inconvenience to the analysis of power supply coal consumption and the research on the combustion indicators and economic benefits of a single boiler. Utility Model Content
[0004] The utility model aims to provide a boiler coal metering auxiliary device, by which the amount of coal unloaded into the coal bunker of a corresponding single boiler through a coal plow can be calculated, so as to facilitate further research on power supply coal consumption, boiler combustion indicators and economic benefits based on the data.
[0005] The utility model solves the technical problem by adopting the following technical scheme: a boiler coal metering auxiliary device, comprising a coal plow, a coal layer detection component, and a controller. The coal plow comprises a gantry, a swing frame, a V-shaped plowshare, and an electro-hydraulic push rod. The rear portion of the swing frame is hingedly arranged on the upper rear side of the gantry, the V-shaped plowshare is fixedly arranged on the front portion of the swing frame, the fixed portion of the electro-hydraulic push rod is hingedly arranged on the rear portion of the gantry and located above the swing frame, the telescopic end of the electro-hydraulic push rod is hingedly connected to the upper front side of the swing frame, the coal layer detection component comprises a support plate, an angle adjustment plate, and a plurality of diffuse reflection photoelectric switches, the support plate is fixedly arranged on the upper front side of the V-shaped plowshare, the angle adjustment plate is arranged on the support plate along the left-right direction, and the angle adjustment plate can swing up and down and position relative to the support plate, a plurality of diffuse reflection photoelectric switches are arranged on the angle adjustment plate along the left-right direction, and the diffuse reflection photoelectric switch is used to detect the coal layer distributed on the conveyor belt below the V-shaped plowshare; the diffuse reflection photoelectric switch is electrically connected to the controller, and a timing module and a calculation module are arranged inside the controller.
[0006] Preferably, a plurality of the diffuse reflection photoelectric switches can be moved leftward, adjusted and positioned relative to the angle adjustment plate.
[0007] Furthermore, a through slot is arranged at the front part of the support plate, and the angle adjustment plate is rotatably arranged in the through slot.
[0008] Furthermore, a threaded rod penetrating through the side wall of the through slot is disposed at the left end and the right end of the angle adjustment plate, and an adjustment nut located outside the support plate is sleeved on the threaded rod.
[0009] Furthermore, an oblong hole distributed along the left-right direction is provided on the angle adjustment plate, a plurality of the diffuse reflection photoelectric switches are vertically sleeved in the oblong hole and two locking nuts on the diffuse reflection photoelectric switch are respectively distributed above and below the angle adjustment plate.
[0010] Furthermore, a front protective plate located in front of the diffuse reflection photoelectric switch is fixedly arranged on the lower front side of the support plate.
[0011] Furthermore, a rear protective plate located behind the diffuse reflection photoelectric switch is fixedly arranged on the lower rear side of the support plate.
[0012] Furthermore, the front guard plate and the rear guard plate are both distributed in an inclined state with the front lower and the rear higher.
[0013] Furthermore, a plurality of reinforcing rib plates are arranged between the front guard plate and the support plate, between the rear guard plate and the support plate, and between the support plate and the V-shaped plowshare.
[0014] The beneficial effects of the utility model are as follows: the utility model has a simple structure and only needs to be further modified on the basis of the existing coal plow; in actual application, the coal flow rate on the total coal conveyor belt is basically constant, and the coal seam on the conveyor belt has a certain thickness. Therefore, according to the distance between the detection end of the diffuse reflection photoelectric switch and the conveyor belt and the height of the coal seam, the detection stroke of the diffuse reflection photoelectric switch can be adaptively adjusted, so that when the plow head is in the coal unloading condition, the diffuse reflection photoelectric switch can detect the presence or absence of the coal seam, thereby realizing the detection of the coal seam; when the presence of the coal seam is detected, the controller starts timing, and when the absence of the coal seam is detected, the controller stops timing, and uses the time period and The coal seam flow on the conveyor belt can be used to calculate the discharge volume of the coal plow within this time period, thereby facilitating the calculation and statistics of the coal input volume of each boiler; the angle adjustment plate can be used to facilitate the angle adjustment of the diffuse reflection photoelectric switch, so that the diffuse reflection photoelectric switch can remain vertical to the coal seam when detecting the coal seam; the locking nut on the diffuse reflection photoelectric switch is used to adjust the vertical distance between the diffuse reflection photoelectric switch and the coal seam, which makes it easier to coordinate with the detection stroke of the diffuse reflection photoelectric switch to achieve effective and accurate detection of the coal seam; the front protective plate and the rear protective plate are used to effectively prevent the protruding coal blocks on the coal seam or the coal blocks rebounded by the plow head from colliding with the diffuse reflection photoelectric switch, thereby improving the stable use performance of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model 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 some preferred embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a partial front view of the overall structure of the utility model;
[0018] Figure 3 for Figure 1 Enlarged view of point A in the middle;
[0019] In the figure: 11 door frame, 12 swing frame, 13 V-shaped plowshare, 14 electro-hydraulic push rod, 21 support plate, 211 through groove, 212 front protection plate, 213 rear protection plate, 22 angle adjustment plate, 221 oblong hole, 222 threaded rod, 223 adjustment nut, 23 diffuse reflection photoelectric switch, 231 locking nut, 3 reinforcing rib plate. DETAILED DESCRIPTION
[0020] The following will be combined with specific embodiments and attached Figure 1-3 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the utility model, not all of the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0021] The utility model provides a boiler coal metering auxiliary device (such as Figure 1As shown in the figure, it includes a coal plow, a coal layer detection component, and a controller. The coal plow is used to unload the total coal conveyor belt into a corresponding boiler coal bunker. The coal plow includes a door frame 11, a swing frame 12, a V-shaped plowshare 13, and an electro-hydraulic push rod 14. The rear part of the swing frame 12 is hingedly arranged on the upper side of the rear part of the door frame 11. Specifically, a supporting shaft is arranged on the upper side of the rear part of the door frame 11. The rear end of the swing frame 12 is fixedly connected to the supporting shaft. The rotation support of the supporting shaft is used to assist in realizing the up and down swing of the swing frame 12. The V-shaped plowshare 13 is fixedly arranged at the front part of the swing frame 12. In actual application, the V-shaped plowshare 13 is used to realize the coal on the conveyor belt. The V-shaped plowshare 13 is used to intercept the coal layer, so that the coal layer enters the corresponding coal bin under the guidance of the V-shaped plowshare 13. When the V-shaped plowshare 13 is unloading coal, it is pressed on the upper surface of the conveyor belt by the downward swing of the swing frame 12. When the V-shaped plowshare 13 is not unloading coal, the swing frame 12 swings upward to separate the bottom of the V-shaped plowshare 13 from the conveyor belt and maintain a certain height, so that the coal layer of the conveyor belt continues to flow backward directly from under the V-shaped plowshare 13. The fixed part of the electro-hydraulic push rod 14 is hingedly arranged at the rear of the door frame 11 and is located above the swing frame 12. The telescopic end of the electro-hydraulic push rod 14 is hingedly connected to the upper front side of the swing frame 11. The telescopic movement of the hydraulic push rod 14 realizes the up and down swing of the V-shaped plowshare 13. The coal plowshare is a conventional prior art product in the technical field. Therefore, only the above-mentioned simple description of the structure of the coal plowshare is given here, and the detailed structure and working principle of the coal plowshare are not described in detail here; the coal layer detection component includes a support plate 21, an angle adjustment plate 22 and a plurality of diffuse reflection photoelectric switches 23. The diffuse reflection photoelectric switches 23 are prior art products in the detection technical field. Therefore, the detailed structure and working principle of the diffuse reflection photoelectric switches 23 are not described in detail here. The support plate 21 is fixedly arranged on the front upper side of the V-shaped plowshare 13, and the support plate 21 moves with the The angle adjustment plate 22 is arranged on the support plate 21 along the left-right direction, and the angle adjustment plate 22 can be swung up and down and positioned relative to the support plate 21. A plurality of diffuse reflection photoelectric switches 23 are arranged on the angle adjustment plate 22 along the left-right direction. The swing of the angle adjustment plate 22 drives the diffuse reflection photoelectric switches 23 to swing and adjust. The diffuse reflection photoelectric switches 23 are used to detect the coal seams distributed on the conveyor belt below the V-shaped plowshare 13. The diffuse reflection photoelectric switches 23 are electrically connected to the controller, and a timing module and a calculation module are arranged inside the controller.In actual application, the coal flow rate on the total coal conveyor belt is basically constant, and the coal seam on the conveyor belt has a certain thickness. Therefore, according to the distance between the detection end of the diffuse reflection photoelectric switch 23 and the conveyor belt and the height of the coal seam, the detection stroke of the diffuse reflection photoelectric switch 23 can be adaptively adjusted, so that when the V-shaped plowshare 13 is in the coal unloading condition, the diffuse reflection photoelectric switch 23 can detect the presence or absence of the coal seam, thereby realizing the detection of the coal seam; when the presence of the coal seam is detected, the timing module in the controller starts timing, and when the absence of the coal seam is detected, the timing module in the controller stops timing. Using the time period obtained by the controller and the coal seam flow rate on the conveyor belt, the calculation module in the controller can calculate the unloading amount of the coal plow in this time period, thereby facilitating the calculation and statistics of the coal intake of each boiler. In this embodiment, two diffuse reflection photoelectric switches 23 can be set on the angle adjustment plate 22. In actual application, as long as one diffuse reflection photoelectric switch 23 sends a detection signal, the timing module starts timing, which can avoid the inability to perform normal detection work when some diffuse reflection photoelectric switches 23 have detection failures.
[0022] In order to facilitate the effective adjustment of the position of the diffuse reflection photoelectric switch 23 according to the distribution of the coal seam, the diffuse reflection photoelectric switch 23 is enabled to be moved left and right and adjusted and positioned relative to the angle adjustment plate 22. Specifically, an oblong hole 221 distributed along the left and right directions is provided on the angle adjustment plate 22, and several of the diffuse reflection photoelectric switches 23 are vertically sleeved in the oblong hole 221 and the two locking nuts 231 on the diffuse reflection photoelectric switch 23 are respectively distributed above and below the angle adjustment plate 22. When the two locking nuts 231 are loosened, the left and right and up and down movement adjustment of the diffuse reflection photoelectric switch 23 can be achieved.
[0023] On the basis of the above embodiments, a specific implementation method for realizing angle adjustment and positioning of the angle adjustment plate 22 on the support plate 21 is as follows: a through groove 211 is provided at the front part of the support plate 21, and the angle adjustment plate 22 is rotatably provided in the through groove 211, and a threaded rod 222 penetrating through the side wall of the through groove 211 is provided at the left and right ends of the angle adjustment plate 22, and an adjusting nut 223 located on the outer side of the support plate 21 is sleeved on the threaded rod 222, and the angle adjustment plate 22 is swung and fixed by tightening the two adjusting nuts 223, and the angle adjustment plate 22 is swung and adjusted by loosening the two adjusting nuts 223, and the angle adjustment of the angle adjustment plate 22 is realized, and when the angle adjustment plate 22 is realized, the angle adjustment of the diffuse reflection photoelectric switch 23 is realized synchronously.
[0024] In order to prevent individual protruding coal blocks on the conveyor belt or coal blocks rebounded by the V-shaped plowshare 13 from colliding with the bottom of the diffuse reflection photoelectric switch 23 and causing damage to the diffuse reflection photoelectric switch 23 in individual cases, a front protective plate 212 located in front of the diffuse reflection photoelectric switch 23 is fixedly provided on the front lower side of the support plate 21, and further, a rear protective plate 213 located behind the diffuse reflection photoelectric switch 23 is fixedly provided on the rear lower side of the support plate 21. At the same time, the front protective plate 212 and the rear protective plate 213 are both distributed in an inclined state with the front lower and the rear higher. In order to improve the supporting strength of the support plate 21, the front protective plate 212 and the rear protective plate 213, a plurality of reinforcing rib plates 3 are provided between the front protective plate 212 and the support plate 21, between the rear protective plate 213 and the support plate 21, and between the support plate 21 and the V-shaped plowshare 13.
[0025] In the present utility model, "upper", "lower", "front", "back", "left" and "right" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.
[0026] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.
[0027] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the utility model, but the utility model is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A boiler coal metering auxiliary device, comprising a coal plow, the coal plow comprising a door frame, a swing frame, a V-shaped plowshare, and an electro-hydraulic push rod, the rear portion of the swing frame is hingedly arranged on the upper side of the rear portion of the door frame, the V-shaped plowshare is fixedly arranged on the front portion of the swing frame, the fixed portion of the electro-hydraulic push rod is hingedly arranged on the rear portion of the door frame and located above the swing frame, the telescopic end of the electro-hydraulic push rod is hingedly connected to the upper side of the front portion of the swing frame, and is characterized in that: The metering auxiliary device also includes a coal seam detection component and a controller; the coal seam detection component includes a support plate, an angle adjustment plate and a plurality of diffuse reflection photoelectric switches, the support plate is fixedly arranged on the front upper side of the V-shaped plowshare, the angle adjustment plate is arranged on the support plate along the left-right direction, and the angle adjustment plate can swing up and down and be positioned relative to the support plate, a plurality of diffuse reflection photoelectric switches are arranged on the angle adjustment plate along the left-right direction, and the diffuse reflection photoelectric switch is used to detect the coal seam distributed on the conveyor belt under the V-shaped plowshare; the diffuse reflection photoelectric switch is electrically connected to the controller, and a timing module and a calculation module are arranged inside the controller.
2. A boiler coal metering auxiliary device according to claim 1, characterized in that: A plurality of the diffuse reflection photoelectric switches can be moved leftward, adjusted and positioned relative to the angle adjustment plate.
3. A boiler coal metering auxiliary device according to claim 2, characterized in that: A through slot is arranged at the front of the support plate, and the angle adjustment plate is rotatably arranged in the through slot.
4. A boiler coal metering auxiliary device according to claim 3, characterized in that A threaded rod penetrating through the side wall of the through slot is disposed at the left end and the right end of the angle adjustment plate, and an adjustment nut located outside the support plate is sleeved on the threaded rod.
5. A boiler coal metering auxiliary device according to claim 1, 2, 3 or 4, characterized in that The angle adjustment plate is provided with an oblong hole distributed along the left-right direction, a plurality of diffuse reflection photoelectric switches are vertically sleeved in the oblong hole and two locking nuts on the diffuse reflection photoelectric switches are respectively distributed above and below the angle adjustment plate.
6. A boiler coal metering auxiliary device according to claim 5, characterized in that: A front protective plate located in front of the diffuse reflection photoelectric switch is fixedly arranged on the lower front side of the support plate.
7. A boiler coal metering auxiliary device according to claim 6, characterized in that: A rear protective plate located behind the diffuse reflection photoelectric switch is fixedly arranged on the lower rear side of the support plate.
8. A boiler coal metering auxiliary device according to claim 7, characterized in that: The front guard plate and the rear guard plate are both distributed in an inclined state with the front being lower and the rear being higher.
9. A boiler coal metering auxiliary device according to claim 8, characterized in that: A plurality of reinforcing rib plates are arranged between the front guard plate and the support plate, between the rear guard plate and the support plate, and between the support plate and the V-shaped plowshare.