An online automatic cleaning device for an insertion-type dust concentration detection probe

Abstract

An online automatic cleaning device for an insertion-type dust concentration detection probe belongs to the field of flue gas dust detection technology in the metallurgical industry. It solves the problems of poor timeliness, easy leakage of the measured gas, high operational danger, and low work efficiency associated with traditional manual cleaning methods involving periodic disassembly. The device includes a fixed flange at the detection port, with a dust concentration detector inserted into the center of the flange. A dust concentration detection probe is located at one end of the dust concentration detector inside the pipe containing the measured medium. Steam branch pipes are located on both sides of the dust concentration detection probe, and several sets of steam cleaning nozzles are installed on the side walls of the steam branch pipes. A solenoid valve is installed on the main steam pipe connecting the two steam branch pipes. The device enables automatic cleaning of the gas detector within the pipeline, improving the stability and accuracy of measurement data, reducing the frequency of manual disassembly and cleaning, reducing labor intensity, improving operational safety, and extending equipment service life.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas dust detection technology in the metallurgical industry, specifically relating to an online automatic cleaning device for an insertion-type dust concentration detection probe. Background Technology

[0002] In modern industrial production, the monitoring of dust and harmful gases has become a crucial aspect of ensuring safe production, protecting employee health, and safeguarding the environment. Insertion dust and gas detectors, as specialized monitoring equipment, are widely used in various industrial scenarios due to their high accuracy, fast response speed, and convenient installation. An insertion dust and gas detector is a professional instrument that directly inserts itself into a pipe or container to monitor dust concentration and specific gas components in real time. It employs advanced sensing technology to continuously measure the concentration of particulate matter and gas content in the target environment. However, in existing technologies, the insertion dust concentration detection probe is installed on the pipe being monitored. Because there are many dust particles inside the pipe, solid particles easily adhere to the probe, causing distortion of the measurement data and affecting the entire process flow. Currently, cleaning the probe mainly relies on manual disassembly and removal for manual cleaning. This traditional method has poor timeliness, and the disassembly process can cause leakage of the measured gas, posing certain operational hazards. Furthermore, it incurs significant labor costs and low work efficiency. Therefore, it is necessary to improve the existing cleaning methods and devices for insertion dust concentration detection probes. Utility Model Content

[0003] This invention addresses the aforementioned problems by providing an online automatic cleaning device for insertion-type dust concentration detection probes. This device enables automatic cleaning of gas detectors within pipelines or containers, improves the stability and accuracy of measurement data, reduces the frequency of manual disassembly and cleaning, alleviates the labor intensity of operators, effectively reduces operational hazards, and extends the service life of equipment.

[0004] The technical solution adopted by this utility model is as follows: The online automatic cleaning device for the insertion-type dust concentration detection probe includes a detection port set on the pipeline of the measured medium. The detection port is characterized by a fixed flange, with a dust concentration detector inserted into the middle of the fixed flange. One end of the dust concentration detector located outside the pipeline of the measured medium has a concentration detection instrument head, while the other end located inside the pipeline has a dust concentration detection probe. Steam branch lines are also provided on both sides of the dust concentration detection probe, and both steam branch lines are arranged parallel to the dust concentration detection probe. Several sets of steam cleaning nozzles are respectively provided on the sidewall of the steam branch lines facing the dust concentration detection probe. The upper part of the steam branch lines on both sides passes through the fixed flange and connects to the main steam line outside the pipeline of the measured medium. A solenoid valve is installed on the main steam line.

[0005] The steam cleaning nozzle adopts a flat, fan-shaped structure. This allows the cleaning steam in the main steam pipeline to be ejected from the steam cleaning nozzle through two steam branch pipelines, thus achieving thorough cleaning of the dust concentration detection probe.

[0006] The flat, fan-shaped steam cleaning nozzle has an inner opening length of 8–12 mm, an inner opening width of 1–1.6 mm, and an opening angle of 50–70 degrees. This design maximizes the pressure and flow rate of the ejected steam, expands the coverage area, and improves the efficiency of the steam jet from the flat, fan-shaped structure of the steam cleaning nozzle, ensuring effective cleaning of the dust concentration detection probe.

[0007] The spacing between the several groups of flat, fan-shaped steam cleaning nozzles along the steam branch pipeline is 40–60 mm. This allows the steam to fully cover the detection probe by adjusting the spacing of the fan-shaped steam cleaning nozzles.

[0008] The dust concentration detector is connected to the through-hole threaded in the middle of the fixed flange via a detector fixing connection sleeve. This facilitates the adjustment of the dust concentration detector's installation position on the fixed flange and also makes it convenient for the detector to be disassembled, cleaned, and maintained.

[0009] A manual valve is also installed on the main steam pipeline in the direction of steam supply, in front of the solenoid valve, to facilitate the later maintenance of the entire device.

[0010] The beneficial effects of this utility model are as follows: Because this utility model uses a detection port installed on the pipeline of the medium being measured, with a fixed flange on the detection port, a dust concentration detector inserted into the middle of the fixed flange, a concentration detection instrument head at one end of the dust concentration detector located outside the pipeline, and a dust concentration detection probe at the other end of the dust concentration detector located inside the pipeline, and steam branch pipes on both sides of the dust concentration detection probe, with several sets of steam cleaning nozzles on the sidewalls of the steam branch pipes facing the dust concentration detection probe, and the upper parts of the steam branch pipes on both sides connected to the main steam pipeline outside the pipeline of the medium being measured, with a solenoid valve structure installed on the main steam pipeline, its design is reasonable and compact. It can realize automatic or manual cleaning of the gas detector in the pipeline or container, improving the stability and accuracy of the measurement data, reducing the frequency of manual disassembly and cleaning, reducing the labor intensity of operators, lowering the degree of danger in operation, and also reducing the frequency of equipment disassembly, thus extending the service life of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 Side view.

[0013] Figure 3 yes Figure 2 A cross-sectional view of the internal structure of the steam branch pipeline and the steam cleaning nozzles thereon.

[0014] Figure 4 yes Figure 3 Side view.

[0015] Figure 5 This is the control flow diagram of this utility model.

[0016] The numbers in the diagram are explained as follows: 1. Measured medium pipeline, 2. Detection port, 3. Fixed flange, 4. Dust concentration detector, 5. Concentration detection instrument head, 6. Dust concentration detection probe, 7. Steam main pipeline, 8. Solenoid valve, 9. Manual valve, 10. Steam branch pipeline, 11. Steam cleaning nozzle, 12. Detector fixed connection sleeve, 13. Nozzle inner length, 14. Nozzle opening angle, 15. Nozzle inner width. Detailed Implementation

[0017] according to Figures 1-5The specific structure of this utility model is described in detail. The online automatic cleaning device for the insertion-type dust concentration detection probe includes a detection port 2 installed on the pipeline 1 of the medium being measured. A fixing flange 3 is bolted to the detection port 2. A dust concentration detector 4, arranged radially along the pipeline 1 of the medium being measured, is inserted into the center of the fixing flange 3. Furthermore, the dust concentration detector 4 is threadedly connected to the through hole in the center of the fixing flange 3 via a detector fixing connecting sleeve 12, thereby facilitating the adjustment of the installation position of the dust concentration detector 4 on the fixing flange 3 and making it convenient for disassembly, cleaning, and maintenance of the detector.

[0018] The dust concentration detector 4 is located at the upper end of the pipeline 1 outside the measured medium, and is equipped with a concentration detection instrument head 5. The dust concentration detector 4 is located at the lower end of the pipeline 1 inside the measured medium, and is equipped with a dust concentration detection probe 6. Two steam branch pipes 10 are respectively installed on both sides of the dust concentration detection probe 6 (e.g., on the fixed flange 3, at a distance of 80mm from each side of the probe), and both steam branch pipes 10 are arranged parallel to the dust concentration detection probe 6, with their ends aligned. Several sets of steam cleaning nozzles 11 are arranged at intervals along the extension direction of the branch pipes 10, on the side facing the dust concentration detection probe 6.

[0019] The steam cleaning nozzle 11 adopts a flat, fan-shaped structure. The inner length 13 of the nozzle is 8–12 mm (e.g., 10 mm), the inner width 15 is 1–1.6 mm (e.g., 1.5 mm), and the opening angle 14 is 50–70 degrees (e.g., 60 degrees). This allows the cleaning steam in the main steam pipe 7 to be ejected from the steam cleaning nozzle 11 via two branch steam pipes 10, achieving thorough cleaning of the dust concentration detection probe 6. Furthermore, it maximizes the pressure and flow rate of the ejected steam, expanding the coverage area and improving the efficiency of the steam jet from the flat, fan-shaped structure of the steam cleaning nozzle 11, ensuring effective cleaning of the dust concentration detection probe 6. Additionally, the spacing between several sets of flat, fan-shaped steam cleaning nozzles 11 along the extension direction of the branch steam pipes 10 is 40–60 mm (e.g., 50 mm). Thus, by adjusting the arrangement distance of the fan-shaped steam cleaning nozzles 11, the ejected steam can fully cover the detection probe, facilitating the use of the device.

[0020] Meanwhile, the upper parts of the steam branch pipes 10 on both sides pass through the fixed flange 3 and are connected to a main steam pipe 7 located outside the pipe 1 for the measured medium. The main steam pipe 7 is equipped with a solenoid valve 8 for controlling the timed entry of cleaning steam into the steam branch pipes 10. The dust concentration detector 4 and the solenoid valve 8 are connected to the DCS control system, and a timer is added to the program to set the opening time of the solenoid valve 8. After the timer expires, the solenoid valve 8 closes. A manual valve 9 is also installed on the main steam pipe 7, in the direction of steam supply before the solenoid valve 8, to facilitate the later maintenance and upkeep of the entire device.

[0021] When using this online automatic cleaning device for insertion-type dust concentration detection probes, firstly, the dust concentration detector 4 is threadedly connected to the through hole in the middle of the fixed flange 3 via the detector fixing connection sleeve 12, and the dust concentration detector 4 is arranged radially along the measured medium pipeline 1. The insertion depth and position of the dust concentration detector 4 on the measured medium pipeline 1 are adjusted. Then, two steam branch pipes 10 are respectively set on both sides of the dust concentration detector 4. The upper part of the two steam branch pipes 10 passes through the fixed flange 3 and connects to the main steam pipeline 7, and the steam branch pipes 10 on both sides are arranged parallel to the dust concentration detection probe 6, with the ends of the steam branch pipes 10 and the dust concentration detection probe 6 aligned. At the same time, the steam cleaning nozzles 11 arranged on the side wall of the steam branch pipes 10 are oriented towards the dust concentration detection probe 6. Afterwards, based on the detection results or probe running time, in the case of measurement distortion due to excessive probe dirt, the dust concentration detection probe 6 is remotely controlled to automatically (or manually) cleaned online by setting a time interval (timer starts counting - timer ends - automatic closing of solenoid valve). This automatic cleaning device uses steam as the cleaning medium for online cleaning, which can quickly and thoroughly clean the device. The cleaning time can be set arbitrarily, and the cleaning effect is obvious. No disassembly or cleaning is required.

Claims

1. An online automatic cleaning device for an insertion-type dust concentration detection probe, comprising a detection port (2) disposed on the pipeline (1) of the medium being measured, characterized in that: A fixed flange (3) is provided on the detection port (2). A dust concentration detector (4) is inserted into the middle of the fixed flange (3). A concentration detection instrument head (5) is provided at one end of the dust concentration detector (4) located outside the test medium pipeline (1). A dust concentration detection probe (6) is provided at one end of the dust concentration detector (4) located inside the test medium pipeline (1). Steam branch pipelines (10) are provided on both sides of the dust concentration detection probe (6). The steam branch pipelines (10) on both sides are arranged parallel to the dust concentration detection probe (6). Several sets of steam cleaning nozzles (11) are provided on the side wall of the steam branch pipeline (10) facing the dust concentration detection probe (6). The upper part of the steam branch pipelines (10) on both sides passes through the fixed flange (3) and is connected to the main steam pipeline (7) outside the test medium pipeline (1). A solenoid valve (8) is provided on the main steam pipeline (7).

2. The online automatic cleaning device for the insertion-type dust concentration detection probe according to claim 1, characterized in that: The steam cleaning nozzle (11) has a flat, fan-shaped structure.

3. The online automatic cleaning device for the insertion-type dust concentration detection probe according to claim 2, characterized in that: The inner length (13) of the flat fan-shaped steam cleaning nozzle (11) is 8-12 mm, the inner width (15) is 1-1.6 mm, and the opening angle (14) is 50-70 degrees.

4. The online automatic cleaning device for the insertion-type dust concentration detection probe according to claim 3, characterized in that: The spacing between several groups of flat fan-shaped steam cleaning nozzles (11) arranged along the extension direction of the steam branch pipeline (10) is 40-60 mm.

5. The online automatic cleaning device for the insertion-type dust concentration detection probe according to claim 1, characterized in that: The dust concentration detector (4) is connected to the through hole threaded in the middle of the fixed flange (3) through the detector fixed connecting sleeve (12).

6. The online automatic cleaning device for the insertion-type dust concentration detection probe according to claim 1, characterized in that: A manual valve (9) is also provided on the steam main pipeline (7) in the direction of steam supply in front of the solenoid valve (8).

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