Thermal power plant ash storage level monitoring and over position alarm safety device

Abstract

The utility model provides a thermal power plant ash storage material position monitoring and over position alarm safety device relates to monitoring alarm technical field, including device ontology, the device ontology is provided with audible -visual annunciator, audible -visual annunciator top end surface four corners all are equipped with the assembling thread blind hole, the inside fixed support post of audible -visual annunciator's assembling thread blind hole is installed, the fixed support post lower extreme outside circumference is provided with hexagonal ring plate, the fixed support post hexagonal ring plate below outside circumference is equipped with thread, the fixed support post top end surface is provided with threaded column, convenient fixed support post installs in audible -visual annunciator top to carry out the load to the shielding round plate, convenient through shielding round plate to carry out the shielding protection to audible -visual annunciator's alarm light, solved the device's alarm light top to not have any shielding structure, leads to alarm light to be covered by snow easily, not convenient in the device top adds the shielding measure to carry out the load to the alarm light shielding protection problem.

Description

Technical Field

[0001] This utility model belongs to the field of monitoring and alarm technology, and in particular relates to a safety device for monitoring and alarming over-level material in ash silos of thermal power plants. Background Technology

[0002] The ash silo level monitoring and over-level alarm safety device for thermal power plants is a safety device specifically designed to monitor the ash level in the ash silo of a coal-fired power plant in real time and automatically trigger an alarm and linkage control when the ash level reaches a preset dangerous high level. Its core objective is to prevent accidents such as ash overflow, vacuuming, caking, and dust in the ash silo, and to ensure safe production, environmental protection, and stable equipment operation.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing ash silo level monitoring and over-level alarm safety devices for thermal power plants: 1. The alarm light on the device has no shielding structure on top, which makes it easy for the alarm light to be covered by snow. It is inconvenient to install shielding measures on the top of the device to protect the alarm light. 2. The device is fixed to the top of the ash silo by multiple bolts, which makes the disassembly and assembly process cumbersome and inconvenient to add assembly measures to the device so that it can be quickly disassembled and assembled. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a safety device for monitoring and alarming the level of ash silos in thermal power plants. This addresses the issues of existing devices where the alarm lights lack any shielding structure on top, making them easily covered by snow and hindering the installation of shielding measures on top for protection; and the device being fixed to the top of the ash silo with multiple bolts, resulting in a cumbersome disassembly and assembly process, making it inconvenient to add assembly measures for quick disassembly and assembly.

[0005] The purpose and effectiveness of this utility model of a safety device for monitoring and alarming the material level in an ash silo of a thermal power plant are achieved through the following specific technical means: A safety device for monitoring and alarming the level of ash silos in thermal power plants includes a device body. The device body is equipped with an audible and visual alarm. Each of the four corners of the top end face of the audible and visual alarm has a blind hole with an assembly thread. A fixed support rod is installed inside the blind hole of the assembly thread of the audible and visual alarm. A regular hexagonal ring plate is provided on the outer circumference of the lower end of the fixed support rod. A thread is provided on the outer circumference of the regular hexagonal ring plate of the fixed support rod. A threaded post is provided on the top end face of the fixed support rod. A shielding circular plate is fitted between the threaded posts of the fixed support rod and locked with a nut. Four vertically penetrating assembly holes are provided in a ring array around the shielding circular plate.

[0006] Furthermore, the lower end of the assembly bearing cylinder is threadedly fitted with an assembly locking cylinder, the inner circumference of the assembly locking cylinder is threaded, and the outer circumference of the assembly locking cylinder is provided with six rotating grooves in an annular array.

[0007] Furthermore, the lower part of the assembly bearing cylinder is fitted with a top plate of the ash silo, and the top plate of the ash silo has an assembly hole that runs vertically through the middle. Four anti-rotation blocks are arranged in a circular array inside the assembly hole of the top plate of the ash silo.

[0008] Furthermore, an annular rubber pad is fitted under the limiting ring plate of the assembled bearing cylinder, and four anti-rotation plates are arranged in a circular array inside the annular rubber pad.

[0009] Furthermore, a limiting ring plate is provided on the outer circumference of the middle part of the assembly bearing cylinder, and four downward through strip grooves are arranged in an annular array on the outer circumference of the lower part of the assembly bearing cylinder.

[0010] Furthermore, an assembly bearing cylinder is installed on the threaded column of the weight level gauge. The inner circumference of the top of the assembly bearing cylinder is threaded, and the outer circumference of the lower end of the assembly bearing cylinder is threaded.

[0011] Furthermore, the bottom end face of the threaded column of the weighted level gauge is provided with a conical head, and a wire hole is opened in the center of the conical head of the weighted level gauge. A steel wire rope is installed inside the wire hole of the weighted level gauge, and the weighted column is installed at the lower end of the steel wire rope of the weighted level gauge through a hanging ring.

[0012] Furthermore, the bottom end face of the hammer level gauge is provided with a frustum, the bottom end face of the frustum of the hammer level gauge is provided with a regular hexagonal prism, and the bottom end face of the regular hexagonal prism of the hammer level gauge is provided with a threaded column.

[0013] Furthermore, a weighted level gauge is bolted to the bottom end face of the audible and visual alarm. The weighted level gauge is electrically connected to the audible and visual alarm. Each of the four corners of the weighted level gauge has an arc-shaped groove in the vertical direction, and the top of the arc-shaped groove of the weighted level gauge is provided with a fixing plate with vertical through holes.

[0014] Furthermore, the audible and visual alarm has fixed threaded blind holes at all four corners of its bottom end face, a horn mouth at its front end face, an alarm light at its top end face, and is connected to an external power source.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The design allows for easy installation of a fixed support rod on top of the audible and visual alarm to support the circular shielding plate. This allows the shielding plate to protect the alarm light, solving the problem that the alarm light on top of the device lacks any shielding structure, making it easy for the alarm light to be covered by snow and inconvenient to install shielding measures on top of the device.

[0016] The assembly of the bearing cylinder is convenient, allowing it to be inserted into the top plate of the ash silo and locked in place by the assembly locking cylinder. The weight level gauge is also conveniently installed on the assembly bearing cylinder via threads. This solves the problem that the device is fixed to the top of the ash silo with multiple bolts, which makes the disassembly and assembly process cumbersome and makes it inconvenient to add assembly measures to the device so that it can be quickly disassembled and assembled. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 2 This is a bottom view of the structure of this utility model.

[0019] Figure 3 This is a disassembled structural diagram of the present invention.

[0020] Figure 4 This is a bottom view of the assembly of the fixed support rod and the shielding circular plate of this utility model.

[0021] Figure 5 This is a bottom view of the assembly of the audible and visual alarm and the weighted level gauge of this utility model.

[0022] Figure 6 This is an assembly cross-sectional view of the assemblies of the bearing cylinder and the top plate of the ash silo according to this utility model.

[0023] In the diagram: 1. Device body; 2. Audible and visual alarm; 3. Fixed support rod; 4. Circular shielding plate; 5. Weighted level gauge; 6. Assembled bearing cylinder; 7. Annular rubber pad; 8. Ash silo top plate; 9. Assembled locking cylinder. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0025] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown: This utility model provides a safety device for monitoring and alarming the over-level of ash silos in thermal power plants, including a device body 1. The device body 1 is equipped with an audible and visual alarm 2 for convenient audible and visual alarm activation. Each of the four corners of the top end face of the audible and visual alarm 2 has blind holes for assembly threads, facilitating the installation of a fixed support rod 3 via threads. The fixed support rod 3 is installed inside the blind holes of the audible and visual alarm 2, facilitating the support of a shielding circular plate 4. A regular hexagonal ring plate is provided on the outer circumference of the lower end of the fixed support rod 3, facilitating the rotation and disassembly of the fixed support rod 3 using tools. Threads are provided on the outer circumference below the regular hexagonal ring plate of the fixed support rod 3, facilitating the installation of the fixed support rod 3 via threads. Threaded posts are provided on the top end face of the fixed support rod 3, facilitating the fitting of the shielding circular plate 4 and the installation of nuts. The shielding circular plate 4 is fitted between the threaded posts of the fixed support rod 3 and locked with nuts, facilitating the shielding and protection of the alarm light of the audible and visual alarm 2. 4. The outer ring array has four through-holes for easy insertion of the threaded post of the fixed support rod 3. The bottom end face of the audible and visual alarm 2 has four blind holes for fixing threads, which facilitates the installation of the weighted level gauge 5 by bolts. The front end face of the audible and visual alarm 2 has a horn for easy alarm sounding. The top end face of the audible and visual alarm 2 has an alarm light for easy alarm illumination. The audible and visual alarm 2 is connected to an external power source for easy operation. The weighted level gauge 5 is bolted to the bottom end face of the audible and visual alarm 2 for easy monitoring of the ash silo level. The weighted level gauge 5 is electrically connected to the audible and visual alarm 2, which transmits signals to the audible and visual alarm 2 for analysis. The four corners of the weighted level gauge 5 have arc-shaped grooves in the vertical direction for easy bolt installation. The top of the arc-shaped groove of the weighted level gauge 5 has a fixing plate with through-holes in the vertical direction for easy installation of the weighted level gauge 5 by bolts.

[0026] The bottom end face of the counterweight level gauge 5 is provided with a frustum for easy convergence and guidance. The bottom end face of the frustum of the counterweight level gauge 5 is provided with a regular hexagonal prism for easy rotation and disassembly using tools. The bottom end face of the regular hexagonal prism of the counterweight level gauge 5 is provided with a threaded post for easy assembly of the bearing cylinder 6 via threaded installation. The bottom end face of the threaded post of the counterweight level gauge 5 is provided with a conical head for easy insertion into the assembly of the bearing cylinder 6. A wire hole is opened at the center of the conical head of the counterweight level gauge 5 for easy passage of the wire rope through the lifting mechanism. A steel wire rope is installed inside the wire hole to facilitate the lifting and lowering of the counterweight column. The lower end of the steel wire rope of the counterweight level gauge 5 is connected to the counterweight column via a hanging ring for easy lifting and lowering to monitor the ash silo level. An assembly bearing cylinder 6 is installed on the threaded column of the counterweight level gauge 5 to facilitate the support of various components. The top of the assembly bearing cylinder 6 has threads on its inner circumference for easy threaded installation of the counterweight level gauge 5. The lower end of the assembly bearing cylinder 6 has threads on its outer circumference for easy threaded installation of the assembly locking cylinder 9. A limit ring plate is provided on the outer circumference of the middle of the assembly bearing cylinder 6. To facilitate the compression and sealing of the annular rubber gasket 7, the lower outer circumferential array of the assembled bearing cylinder 6 has four downward-through strip grooves, which facilitate mutual engagement with the anti-rotation blocks of the ash silo top plate 8. An annular rubber gasket 7 is fitted under the limiting ring plate of the assembled bearing cylinder 6 to facilitate sealing under stress and deformation. Four anti-rotation plates are arranged in a circular array inside the annular rubber gasket 7, which facilitate engagement with the strip grooves of the assembled bearing cylinder 6 to prevent rotation. The lower part of the assembled bearing cylinder 6 is fitted with the ash silo top plate 8 to facilitate the bearing of various components. An opening is located in the middle of the ash silo top plate 8. The assembly has a through-hole for easy insertion of the assembly support cylinder 6. The assembly hole in the top plate 8 of the ash silo has four anti-rotation blocks arranged in a circular array to prevent the assembly support cylinder 6 from rotating. The lower end of the assembly support cylinder 6 is threaded with an assembly locking cylinder 9 to lock the assembly support cylinder 6 onto the top plate 8 of the ash silo. The assembly locking cylinder 9 has threads on its inner circumference for easy assembly and disassembly. The assembly locking cylinder 9 has six rotating grooves arranged in a circular array on its outer circumference for easy assembly and disassembly using tools.

[0027] The specific usage and function of this embodiment are as follows: In this invention, the core function of the device body 1 is to monitor the real-time level of fly ash or slag in the ash silo of a thermal power plant. When the level reaches a preset high or low limit, an alarm is triggered by an audible and visual alarm 2 to ensure safe production and prevent ash overflow or equipment damage from idling. The level measurement process is as follows: The core measuring unit of the device is a weighted level gauge 5. Its internal motor drive mechanism releases the weighted column at the bottom through a steel wire rope threaded through a hole in the center of the conical head. Under the action of gravity, the weighted column falls towards the surface of the material in the ash silo. When the weighted column contacts the material surface, the sensor detects the change in tension of the steel wire rope or the arrival at a preset position, records the falling time, and calculates the distance from the installation point to the material surface according to a preset algorithm. The current ash silo level is transmitted via an electrical signal to an electrically connected audible and visual alarm 2. The control unit inside the alarm 2 continuously receives and processes the real-time level signal from the weighted level gauge 5. The control unit compares the real-time level value with preset high and low alarm thresholds. When the real-time level reaches or exceeds the high alarm threshold, it indicates that the ash silo is about to be full, posing a risk of ash overflow. The audible and visual alarm 2 is immediately triggered, with its top alarm light emitting a strong flashing light signal and its front horn emitting a high-decibel sound alarm. When the real-time level reaches or falls below the low alarm threshold, it indicates that the ash silo level is too low, posing a risk of air evacuation or dust generation. The audible and visual alarm 2 is also triggered. When triggered, an audible and visual alarm is emitted. The alarm signal can be simultaneously transmitted to the power plant's main control system, allowing operators to remotely view and take further action. The circular shielding plate 4 is a key protective component installed on top of the audible and visual alarm 2. Its main function is to prevent snow, rainwater, or large foreign objects from directly covering or impacting the alarm light. This method solves the problem of the alarm light being easily covered by snow due to the lack of any shielding structure on top. Simultaneously, the device body 1 is quickly installed on the top plate 8 of the ash silo via the assembly bearing cylinder 6 and the assembly locking cylinder 9. The installation process is as follows: the annular rubber pad 7 is placed under the limiting ring plate of the assembly bearing cylinder 6. The anti-rotation plate inside the annular rubber pad 7 must align with the strip groove of the annular array at the bottom of the assembly bearing cylinder 6. The assembly is then inserted to achieve circumferential anti-rotation. Next, the lower part of the assembly bearing cylinder 6 is inserted into the assembly hole of the top plate 8 of the ash silo. The annular array of anti-rotation blocks inside the assembly hole will embed into the strip groove of the assembly bearing cylinder 6, preventing it from rotating during subsequent operations. The assembly locking cylinder 9 is then screwed onto the thread on the lower outer circumference of the assembly bearing cylinder 6. As the assembly locking cylinder 9 tightens, the annular rubber gasket 7 is pressed tightly between the top plate 8 of the ash silo and the limiting ring plate of the assembly bearing cylinder 6, forming a reliable seal and mechanical locking. Finally, the threaded post of the counterweight level gauge 5 is screwed into the thread inside the top of the assembly bearing cylinder 6 until it is tightened. This method solves the problem of the device being fixed to the top of the ash silo with multiple bolts, which makes the disassembly and assembly process cumbersome.Note that when the audible and visual alarm 2 and the counterweight level gauge 5 need to be disassembled, only the counterweight level gauge 5 and the assembled support cylinder 6 need to be separated; it is not necessary to remove the assembled support cylinder 6.

[0028] Example 2: The difference from Example 1 is that the regular hexagonal ring plate of the fixed support rod 3 can also be set as a regular heptagonal ring plate. This makes it necessary to use a special tool that cooperates with the regular heptagonal ring plate to rotate the fixed support rod 3, thus preventing non-workers from rotating and disassembling the fixed support rod 3.

[0029] Example 3: The difference from Example 1 is that the top end face of the assembly locking cylinder 9 can also be set as a frosted surface, thereby increasing the friction between the top end face of the assembly locking cylinder 9 and the top plate 8 of the ash silo, and preventing the assembly locking cylinder 9 from rotating and loosening.

Claims

1. A safety device for monitoring and alarming the level of ash silos in thermal power plants, characterized in that: The device includes a main body (1); the main body (1) is equipped with an audible and visual alarm (2), and the four corners of the top end face of the audible and visual alarm (2) are provided with assembly thread blind holes. A fixed support rod (3) is installed inside the assembly thread blind hole of the audible and visual alarm (2). A regular hexagonal ring plate is provided on the outer circumference of the lower end of the fixed support rod (3). A thread is provided on the outer circumference below the regular hexagonal ring plate of the fixed support rod (3). A threaded column is provided on the top end face of the fixed support rod (3). A shielding circular plate (4) is fitted between the threaded columns of the fixed support rod (3) and locked with a nut. Four assembly holes that pass through vertically are provided in a ring array around the shielding circular plate (4).

2. The safety device for monitoring and alarming the ash level in a thermal power plant as described in claim 1, characterized in that: The sound and light alarm (2) has fixed thread blind holes at the four corners of the bottom end face, a horn mouth at the front end face, an alarm light at the top end face, and is connected to an external power source.

3. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 2, characterized in that: The bottom end face of the audible and visual alarm (2) is bolted with a heavy hammer level gauge (5). The heavy hammer level gauge (5) is electrically connected to the audible and visual alarm (2). The four corners of the heavy hammer level gauge (5) are provided with arc-shaped grooves in the vertical direction. The top of the arc-shaped groove of the heavy hammer level gauge (5) is provided with a fixing plate with vertical through holes.

4. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 3, characterized in that: The bottom end face of the hammer level gauge (5) is provided with a frustum, the bottom end face of the frustum of the hammer level gauge (5) is provided with a regular hexagonal prism, and the bottom end face of the regular hexagonal prism of the hammer level gauge (5) is provided with a threaded column.

5. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 4, characterized in that: The bottom end face of the threaded column of the hammer level gauge (5) is provided with a conical head. A wire hole is opened in the center of the conical head of the hammer level gauge (5). A steel wire rope is installed inside the wire hole of the hammer level gauge (5). The lower end of the steel wire rope of the hammer level gauge (5) is equipped with a hammer column through a hanging ring.

6. The safety device for monitoring and alarming the ash level in a thermal power plant silo as described in claim 5, characterized in that: The weight level gauge (5) has an assembly bearing cylinder (6) installed on its threaded post. The top inner circumference of the assembly bearing cylinder (6) is threaded, and the lower outer circumference of the assembly bearing cylinder (6) is threaded.

7. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 6, characterized in that: The assembly support cylinder (6) has a limiting ring plate on the outer circumference in the middle, and four downward through strip grooves are arranged on the outer circumference of the lower part of the assembly support cylinder (6).

8. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 7, characterized in that: The assembly bearing cylinder (6) has an annular rubber pad (7) fitted under the limiting ring plate, and four anti-rotation plates are arranged in a circular array inside the annular rubber pad (7).

9. The safety device for monitoring and alarming the ash level in a thermal power plant silo as described in claim 8, characterized in that: The lower part of the assembly bearing cylinder (6) is fitted with a top plate (8) of the ash silo. The top plate (8) of the ash silo has an assembly hole that runs through the top and bottom. Four anti-rotation blocks are arranged in a circular array inside the assembly hole of the top plate (8).

10. The safety device for monitoring and alarming the ash level in a thermal power plant ash silo as described in claim 9, characterized in that: The lower end of the assembly bearing cylinder (6) is threadedly fitted with an assembly locking cylinder (9). The inner circumference of the assembly locking cylinder (9) is threaded, and the outer circumference of the assembly locking cylinder (9) is provided with six rotating grooves in an annular array.

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