Radar ruler anti-blocking purging device

Abstract

The application discloses a radar probe anti-blocking purging device and belongs to the technical field of blast furnace iron-making equipment. The device is installed between a probe hole plate and a radar device, comprising a purging device cavity, a through hole, an air inlet pipe and a nitrogen inlet; the through hole is provided in the purging device cavity, and the through hole is in alignment and communication with a radiation pipe opening of the radar device and an opening of the probe hole plate; the purging device cavity is in a circular shape, and a circular purging nozzle is arranged at the lower part of the purging device cavity; the nozzle is arranged in an inclined surface, and the spraying direction is directed to the axis of the through hole. In operation, nitrogen enters the purging device cavity and is sprayed out from the circular purging nozzle, forming a conical gas curtain to prevent dust and gas from entering around the front end of the detection hole of the radar probe. The application has the advantages of simple structure, easy maintenance, good stability, effective realization of the anti-accumulation and anti-blocking of the radar probe passage, avoidance of equipment failure and blow-off maintenance caused by dust and gas blocking, great improvement of the reliability and precision of process parameters, and laying of a foundation for stable production of a blast furnace.

Description

Technical Field

[0001] This utility model belongs to the technical field of blast furnace ironmaking equipment, and in particular relates to a radar probe anti-blocking purging device. Background Technology

[0002] This invention relates to the fields of mechanical engineering and metallurgical equipment technology, and more particularly to an anti-clogging device for radar probes used in blast furnace ironmaking processes. Radar probes are important monitoring devices in blast furnace ironmaking processes. They are directly installed on the probe orifice plate, with the radar illumination nozzle aligned with the opening of the probe orifice plate, for real-time monitoring of key process parameters such as the material level within the blast furnace. The data provided by this device is crucial for guiding the stable operation of the blast furnace and ensuring the reliability of process parameters.

[0003] However, radar probes operate in harsh environments, constantly exposed to high temperatures, high dust levels, and dusty gases. During long-term operation, the radar illumination nozzles are highly susceptible to clogging, leading to data corruption and ultimately, malfunction. Existing anti-clogging measures, such as simple nitrogen purging, are not ideal and clogging still frequently occurs. Severe clogging necessitates cleaning, which can typically only be performed during blast furnace shutdowns. These unplanned or planned shutdowns inevitably disrupt normal blast furnace production, hindering stable operation. Therefore, current technology cannot guarantee the long-term stability and data reliability of radar probes under harsh conditions, necessitating the design of a novel anti-clogging device to achieve clogging-free operation. Utility Model Content

[0004] To address the problem that existing radar probes are prone to clogging in harsh working environments, leading to data corruption and functional failure, this invention provides a radar probe anti-clogging purging device.

[0005] This utility model is implemented as follows: a radar probe anti-clogging purging device, used for installation between the probe orifice plate and the radar device, characterized in that the purging device includes a device body, the device body having a central through hole, a purging cavity, a medium inlet, and a surrounding purging nozzle; the central through hole is used to align and communicate with the radar illumination pipe of the radar device and the opening of the probe orifice plate to form a radar signal path; the purging cavity is arranged circumferentially around the central through hole for receiving and distributing the purging medium; the medium inlet is used to connect to... An external medium air source is connected to the purging chamber; a surrounding purging nozzle is disposed at one end of the purging chamber facing the probe orifice plate, and is arranged circumferentially around the front end of the central through hole, for spraying the purging medium around the front end of the radar illumination pipe and forming a continuous air curtain to prevent dust from entering the central through hole; the device body is reliably connected and aligned with the probe orifice plate and the radar device through a connecting structure to ensure that the radar illumination pipe, the central through hole, and the opening of the probe orifice plate are on the same axis.

[0006] In the above technical solution, preferably, the circumferential purging nozzle is a circumferentially shaped downward nozzle.

[0007] In the above technical solution, preferably, the purging medium is nitrogen.

[0008] In the above technical solution, preferably, the surrounding purge nozzle is arranged at an angle.

[0009] In the above technical solution, preferably, the spray direction of the purging nozzle is directed towards the axis of the central through hole, and the sprayed medium forms a conical air curtain.

[0010] In the above technical solution, preferably, the purging cavity has a circumferential structure to ensure uniform gas distribution.

[0011] In the above technical solution, preferably, the connection structure includes a flange and connecting bolts.

[0012] In the above technical solution, preferably, the medium inlet is connected to a gas source valve.

[0013] The radar probe anti-clogging and purging device provided by this invention has significant advantages compared with the prior art: First, this device employs a unique structure with a downward-facing nozzle to form an air curtain, achieving clog-free operation. Its implementation significantly improves the stability of the radar probe, effectively preventing clogging and avoiding radar probe failure due to dust and gas blockage. Second, the device's stable operation and anti-clogging characteristics greatly enhance the reliability and accuracy of process parameters, thus laying the foundation for stable blast furnace production. Furthermore, because this device effectively solves the clogging problem, it avoids the need for shutdown maintenance to clean clogged dust, eliminating any impact on normal production. Finally, this purging device has a simple structure, allowing for convenient maintenance, and its circumferential downward-facing nozzle provides excellent stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of part A. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0016] This embodiment discloses a radar probe anti-clogging purging device, which is installed between the probe orifice plate 1 and the radar device 2 in the blast furnace ironmaking process. This device aims to solve the problem that the radar illumination nozzle is easily clogged in harsh working environments, leading to data corruption and functional failure. By designing a new purging device, clogging-free operation is achieved, avoiding the need for shutdown maintenance to clean clogged dust, thus contributing to stable blast furnace production. To further illustrate the structure of this utility model, a detailed description is provided below in conjunction with the accompanying drawings: Please see Figure 1 and Figure 2 The purging device includes a device body 3, inside which is a central through hole 3-1. This through hole is used to align and communicate with the radar illumination port and the opening of the probe plate of the radar device to form a radar signal path. The device body also includes a purging cavity 3-2, which is circumferentially arranged around the central through hole and is used to receive and distribute the purging medium. Specifically, the purging cavity is preferably circumferentially shaped, which ensures the uniform distribution of the purging medium inside the cavity, thereby ensuring the uniformity and stability of the air curtain during subsequent ejection.

[0017] To introduce the purging medium into the cavity, the device body is equipped with a medium inlet for connecting an external medium gas source to the purging cavity. In specific operation, nitrogen gas enters the purging cavity through the medium inlet 3-3, via the gas source valve 3-4, and the inlet pipe 3-5. The inlet pipe is connected to the purging cavity.

[0018] The core feature of this invention lies in the surrounding purge nozzles 3-6, which are disposed at one end of the purge cavity facing the probe orifice plate and arranged circumferentially around the front end of the central through hole. These nozzles are used to spray the purge medium around the front end of the radar illumination tube, forming a continuous air curtain that prevents dust and gas from entering, thus ensuring that the radar probe passage is free from dust accumulation and blockage.

[0019] The surrounding purge nozzle specifically adopts a circumferential downward nozzle form, preferably arranged at an angle. This structure, by designing the nozzle at an angle, creates a conical air curtain from which the ejected gas is directed towards the axis of the central through-hole. Compared to simple parallel airflow, this conical air curtain forms a stronger airflow barrier effect at the orifice, more effectively resisting the impact of dust and gas from harsh external environments and ensuring anti-clogging characteristics. Furthermore, the circumferential downward nozzle form provides better stability.

[0020] The deployment of this device can greatly improve the stability of the radar probe, prevent radar probe failure caused by dust and gas blockage, effectively eliminate blockage, ensure the performance of the radar probe equipment, greatly improve the reliability and accuracy of process parameters, and lay the foundation for stable blast furnace production.

[0021] The main body of this device achieves reliable connection and alignment with the probe orifice plate and the radar device through a connecting structure. Specifically, this connecting structure adopts a flange and connecting bolt configuration: the flange at one end of the purging device near the purging nozzle is connected to the probe orifice plate via connecting bolts; the flange at the other end of the purging device is connected to the flange of the radar device via connecting bolts. After connection, the illumination nozzle, central through hole of the radar device, and opening of the probe orifice plate are aligned, forming an anti-clogging purging structure.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radar probe anti-clogging purging device, used for installation between the probe orifice plate and the radar device, characterized in that, The purging device includes a device body, and the device body contains: A central through hole is provided for alignment and communication with the radar illumination port of the radar device and the opening of the probe plate to form a radar signal path. A purge chamber is circumferentially arranged around the central through hole and is used to receive and dispense the purge medium; A medium inlet is used to connect an external medium gas source to the purge chamber; A circumferential purge nozzle is disposed at one end of the purge chamber facing the probe orifice plate and is arranged circumferentially around the front end of the central through hole. It is used to spray the purge medium around the front end of the radar illumination tube and form a continuous air curtain to prevent dust and gas from entering the central through hole. The device body achieves reliable connection and alignment with the probe plate and the radar device through a connecting structure, so as to ensure that the radar illumination port, the central through hole and the opening of the probe plate are on the same axis.

2. The radar probe anti-blocking purging device according to claim 1, characterized in that, The surrounding purge nozzle is a circumferential downward nozzle.

3. A radar probe anti-blocking purging device according to claim 1 or 2, characterized in that, The purging medium is nitrogen.

4. The radar probe anti-blocking purging device according to claim 1, characterized in that, The surrounding purge nozzles are arranged at an angle.

5. The radar probe anti-blocking purging device according to claim 4, characterized in that, The spray direction of the purging nozzle is directed towards the axis of the central through hole, and the sprayed medium forms a conical air curtain.

6. The radar probe anti-blocking purging device according to claim 1, characterized in that, The purging chamber has a circular structure to ensure uniform gas distribution.

7. The radar probe anti-blocking purging device according to claim 1, characterized in that, The connection structure includes a flange and connecting bolts.

8. The radar probe anti-blocking purging device according to claim 1, characterized in that, The medium inlet is connected to a gas source valve.

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