A spark detection alarm for hot blast stove
By designing a gas guide hood and built-in components in the spark detector alarm for hot blast furnaces, and utilizing an S-shaped airflow channel and an ultraviolet sensor to capture spark light, the problem of easy probe damage was solved, and high-precision spark detection was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGLING MEITIAN NEW ENERGY TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-16
AI Technical Summary
The probes of existing spark detectors for hot blast stoves are easily damaged by particulate impurities in the airflow, resulting in reduced detection accuracy.
Design a spark detector alarm that includes an air guide hood, a cylinder, and built-in components. Utilize an ultraviolet sensor and an optical probe, and form an S-shaped airflow channel through a filter plate and a reflector cap to filter out particulate impurities and capture spark light. The signal is transmitted through a wireless module to avoid direct contact between the probe and the airflow.
It effectively prevents particulate impurities from damaging the probe, improves detection accuracy and device safety, and ensures the accuracy of spark detection.
Smart Images
Figure CN224365366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of alarms, and more specifically, to a spark detection alarm for a hot blast stove. Background Art
[0002] The spark detection alarm for a hot blast stove is a key device to ensure the safe operation of industrial heating equipment. Its core function is to monitor the spark or flame state in the hot blast stove in real time, and avoid the risks of fire or explosion through rapid response and linkage control. The gas discharged from the hot blast stove usually contains a certain amount of particulate impurities, and its specific composition and content are closely related to the fuel type of the hot blast stove, the combustion efficiency and the operation state of the dust removal system.
[0003] The hot air flow discharged from the hot blast stove contains particulate impurities generated by incomplete combustion. The particulate impurities will affect the detection head of the built-in spark detection alarm, and seriously damage the probe during operation, resulting in a decrease in detection accuracy. In view of this, we propose a spark detection alarm for a hot blast stove. Content of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a spark detection alarm for a hot blast stove, so as to solve the technical problem that the probe of the current built-in alarm is easily damaged by impurities in the air flow, resulting in low accuracy.
[0005] To solve the above technical problems, the utility model provides the following technical solution: A spark detection alarm for a hot blast stove, including an air guide cover, a cylinder body and an internal component. The upper end of the cylinder body is threadedly installed in the bottom opening of the air guide cover. In the middle of the inner top of the air guide cover, there is an assembly port. An ultraviolet sensor is arranged in the air guide cover, and the upper end of the ultraviolet sensor is threadedly installed in the assembly port. The internal component is installed inside the lower opening of the cylinder body. The internal component consists of an inner cylinder and a filter cover, and the filter covers are distributed in an annular array inside the inner cylinder.
[0006] When the utility model is in use, the device is installed in the exhaust pipe of the hot blast stove in an inserted manner. The visibility inside the pipe body is relatively low. When a spark is generated by the particulate matter in the air flow, the particulate matter is guided into the filter cover, and is filtered inside the filter cover through the filter screen plate. At the same time, the spark generated by the particulate matter generates light irradiation, and the light is reflected to the optical probe of the ultraviolet sensor through the mirror cap, and the light is captured through the optical probe. The signal is transmitted outward through the wireless module inside the ultraviolet sensor. The optical probe is designed to be retractable, separated from the air flow passage, to avoid the reduction of detection accuracy caused by the damage of the probe by particulate impurities. During installation, the upper end of the ultraviolet sensor is threadedly installed on the assembly port inside the air guide cover, and then the inner cylinder is threadedly installed in the bottom opening of the cylinder body, and a zigzag S-shaped gas flow passage is formed between the arc surface inside the air guide cover and the cap cover.
[0007] Preferably, the upper side of the inside of the air guide shroud is provided with an arc-shaped surface, and the upper opening of the air guide shroud is provided with an air inlet in a circular array, and the air inlet corresponds to the arc-shaped surface.
[0008] Preferably, a battery box is embedded in the upper end of the ultraviolet sensor, an optical probe is provided at the bottom of the ultraviolet sensor, and a cap is fixed to the lower outer side of the ultraviolet sensor.
[0009] Preferably, the cap is designed in the shape of an annular horn, and the outer sloping surface of the cap corresponds to the upper opening of the filter cover of the inner cylinder, and the cap is located inside the upper opening of the cylinder.
[0010] Preferably, the inner cylinder is threadedly installed at the bottom of the cylinder body, a bracket is fixed inside the lower opening of the inner cylinder, and a reflector cap is fixed on the upper side of the middle part of the bracket, the reflector cap corresponding to the optical probe.
[0011] Preferably, a filter screen is fixed at the outer opening of the filter cover, and asbestos boards are evenly distributed inside the filter cover. The filter cover and the support are staggered, and the filter screen corresponds to the reflector cap.
[0012] Preferably, the air guide hood forms an S-shaped airflow channel inside through an arc-shaped surface and a cap, and the bottom of the airflow channel corresponds to the upper opening of the filter hood.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model, through the design of the cylindrical body, allows the device to be inserted into the exhaust pipe of the hot air furnace. The visibility inside the pipe is low. When sparks are generated by particles in the airflow, the particles are guided into the filter cover and filtered out by the filter screen. At the same time, the sparks generated by the particles produce light, which is reflected through the reflector cap to the optical probe of the ultraviolet sensor. The optical probe captures the light, and the signal is transmitted outward through the wireless module inside the ultraviolet sensor. The optical probe is designed to retract and separate from the airflow channel, avoiding damage to the probe by particulate impurities and thus reducing the detection accuracy.
[0015] 2. This utility model also designs an air guide hood. During installation, the upper thread of the ultraviolet sensor is installed on the assembly port inside the air guide hood, and then the inner cylinder is installed in the bottom opening of the cylinder. The arc-shaped surface on the inner side of the air guide hood and the cap form a meandering S-shaped gas flow path. Through the above structural design, the gas discharged from the hot air furnace enters through the air inlet, and then forms centrifugal force through the S-shaped airflow channel. Under the centrifugal action, particulate impurities in the airflow are introduced from the upper opening of the filter cover, forming an impurity filtration and spark interception effect, improving the safety of the device. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 This is a front view structural diagram of the present utility model;
[0019] Figure 4 This is a schematic diagram of the unfolded structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the built-in components of this utility model;
[0021] Figure 6 This is a schematic diagram of the air guide cover structure of this utility model.
[0022] The following are the labels in the diagram: 1. Air guide hood; 101. Air inlet; 102. Arc-shaped surface; 103. Assembly port; 2. Cylinder body; 3. Ultraviolet sensor; 301. Cap; 302. Optical probe; 303. Battery box; 4. Internal components; 401. Inner cylinder; 402. Filter cover; 403. Support; 404. Reflector cap; 405. Asbestos board; 406. Filter screen. Detailed Implementation
[0023] like Figures 1 to 4As shown, this utility model relates to a spark detector alarm for a hot blast stove, comprising a gas guide hood 1, a cylinder 2, and an internal component 4. The upper end of the cylinder 2 is threaded into the bottom opening of the gas guide hood 1. An assembly port 103 is provided at the center of the top of the gas guide hood 1. An ultraviolet sensor 3 is installed inside the gas guide hood 1, with its upper end threaded into the assembly port 103. The internal component 4 is installed inside the lower opening of the cylinder 2. An arc-shaped surface 102 is provided on the upper side of the inside of the gas guide hood 1. Air inlets 101 are arranged in a circular array at the upper opening of the gas guide hood 1, and the air inlets 101 correspond to the arc-shaped surface 102. A battery box 303 is embedded in the upper end of the ultraviolet sensor 3. An optical probe 302 is provided at the bottom of the ultraviolet sensor 3. A cap 301 is fixed to the outer side of the lower end of the ultraviolet sensor 3. 1. The device has a ring-shaped design, and the outer slope of the cap 301 corresponds to the upper opening of the filter cover 402 of the inner cylinder 401. The cap 301 is located inside the upper opening of the cylinder 2. This device is inserted into the exhaust pipe of the hot air furnace. The visibility inside the pipe is low. When the particles in the airflow generate sparks, the particles are guided into the filter cover 402 and filtered out by the filter screen plate 406. At the same time, the sparks generated by the particles generate light. The light is reflected through the reflector cap 404 to the optical probe 302 of the ultraviolet sensor 3. The light is captured by the optical probe 302, and the signal is transmitted outward through the wireless module in the ultraviolet sensor 3. The optical probe 302 has a retractable design and is separated from the airflow channel to avoid particle impurities from damaging the probe and reducing the detection accuracy.
[0024] like Figures 3 to 6As shown, this utility model relates to a spark detector alarm for a hot blast stove, comprising a gas guide hood 1, a cylinder 2, and an internal component 4. The internal component 4 consists of an inner cylinder 401 and a filter cover 402, with the filter cover 402 arranged in a ring array inside the inner cylinder 401. The inner cylinder 401 is threaded onto the bottom of the cylinder 2. A bracket 403 is fixed inside the lower opening of the inner cylinder 401, and a reflector cap 404 is fixed to the upper side of the middle part of the bracket 403. The reflector cap 404 corresponds to the optical probe 302. A filter screen plate 406 is fixed at the outer opening of the filter cover 402, and asbestos boards 405 are evenly distributed inside the filter cover 402. The filter cover 402 and the bracket 403 are staggered, and the filter screen plate 406 corresponds to the reflector cap 405. 04. Inside the air guide hood 1, an S-shaped airflow channel is formed by the arc-shaped surface 102 and the cap 301, and the bottom of the airflow channel corresponds to the upper opening of the filter cover 402. During installation, the upper end of the ultraviolet sensor 3 is threaded onto the assembly port 103 inside the air guide hood 1, and then the inner cylinder 401 is threaded onto the bottom opening of the cylinder 2. A meandering S-shaped gas flow path is formed between the arc-shaped surface 102 on the inner side of the air guide hood 1 and the cap 301. Through the above structural design, the gas discharged from the hot air furnace enters through the air inlet 101, and then forms centrifugal force through the S-shaped airflow channel. Under the centrifugal action, particulate impurities in the airflow are introduced from the upper opening of the filter cover 402, forming an impurity filtration and spark interception effect, improving the safety of the device.
[0025] Working Principle: This embodiment provides a spark detector alarm for a hot air furnace. In use, the device is inserted into the exhaust pipe of the hot air furnace. The visibility inside the pipe is low. When particles in the airflow generate sparks, the particles are guided into the filter cover 402 and filtered out by the filter screen 406. At the same time, the sparks generated by the particles generate light, which is reflected through the reflector cap 404 to the optical probe 302 of the ultraviolet sensor 3. The optical probe 302 captures the light, and the signal is transmitted outward through the wireless module inside the ultraviolet sensor 3. The optical probe 302 has a retractable design, which separates it from the airflow channel to avoid particle impurities damaging the probe and reducing the detection accuracy. During installation, the upper end of the ultraviolet sensor 3 is threaded onto the assembly port 103 inside the air guide cover 1, and then the inner cylinder 401 is threaded onto the bottom opening of the cylinder 2. A meandering S-shaped gas flow path is formed between the arc-shaped surface 102 on the inner side of the air guide cover 1 and the cap 301.
[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A spark detection alarm for hot blast stove, comprising a gas guide cover (1), a cylinder (2) and an internal assembly (4), characterized in that: The upper end of the cylinder (2) is threaded into the bottom opening of the air guide hood (1). The air guide hood (1) has an assembly port (103) at the middle of its inner top. The air guide hood (1) has an ultraviolet sensor (3) inside, and the upper end of the ultraviolet sensor (3) is threaded into the assembly port (103). The built-in component (4) is installed inside the lower opening of the cylinder (2). The built-in component (4) consists of an inner cylinder (401) and a filter cover (402), and the filter cover (402) is arranged in a ring array inside the inner cylinder (401).
2. A spark detection alarm for a hot blast stove according to claim 1, characterized in that The upper side of the air guide hood (1) is provided with an arc-shaped surface (102), and the upper opening of the air guide hood (1) is provided with an air inlet (101) arranged in a ring array, and the air inlet (101) corresponds to the arc-shaped surface (102).
3. A spark detector alarm for a hot blast stove according to claim 2, characterized in that: The upper end of the ultraviolet sensor (3) is fitted with a battery box (303), the bottom of the ultraviolet sensor (3) is provided with an optical probe (302), and the lower outer side of the ultraviolet sensor (3) is fixed with a cap (301).
4. A spark detector alarm for a hot blast stove according to claim 3, characterized in that: The cap (301) is designed in the shape of an annular horn, and the outer slope of the cap (301) corresponds to the upper opening of the filter cover (402) of the inner cylinder (401). The cap (301) is located inside the upper opening of the cylinder (2).
5. A spark detector alarm for a hot blast stove according to claim 4, characterized in that: The inner cylinder (401) is threadedly installed at the bottom of the cylinder (2). A bracket (403) is fixed inside the lower opening of the inner cylinder (401), and a reflector cap (404) is fixed on the upper side of the middle part of the bracket (403). The reflector cap (404) corresponds to the optical probe (302).
6. A spark detector alarm for a hot blast stove according to claim 5, characterized in that: A filter screen plate (406) is fixed at the outer opening of the filter cover (402), and asbestos boards (405) are evenly distributed inside the filter cover (402). The filter cover (402) and the bracket (403) are staggered. The filter screen plate (406) corresponds to the reflector cap (404).
7. A spark detector alarm for a hot blast stove according to claim 6, characterized in that: The air guide hood (1) forms an S-shaped airflow channel inside through the arc-shaped surface (102) and the cap (301), and the bottom of the airflow channel corresponds to the upper opening of the filter cover (402).