System for monitoring dust deposition condition of dust removal pipeline

Abstract

The utility model discloses a system for monitoring dust deposition condition of a dedusting pipeline, which comprises a pulse blowing valve, a dust concentration sensor, a control cabinet and a pipeline to be monitored, a nozzle of the pulse blowing valve is hermetically connected with the pipeline to be monitored, and an acquisition probe of the dust concentration sensor hermetically penetrates through a dust concentration detection port and is positioned inside the pipeline to be monitored. In the airflow direction of the to-be-monitored pipeline, the dust concentration sensor is located at the non-downstream position of the pulse injection valve, and a control button of the control cabinet is operated to enable a nozzle of the pulse injection valve to inject air into the to-be-monitored pipeline, so that the dust concentration in the to-be-monitored pipeline is changed; the dust concentration sensor detects the dust concentration in the to-be-monitored pipeline and displays the dust concentration in the display screen of the control cabinet in real time, and whether dust is accumulated in the to-be-monitored pipeline or not can be detected by comparing display data on the display screen. The device is simple in structure and easy and convenient to operate, openings do not need to be formed in the to-be-monitored pipeline during detection, and manual sampling is not needed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of environmental protection dust removal system, and specifically relates to a system for monitoring dust deposition in a dust removal pipeline, which is suitable for monitoring dust deposition in a dust removal pipeline. BACKGROUND

[0002] Dust deposition in a dust removal pipeline often occurs during operation of an existing dust removal system, which not only affects the effect of the dust removal system but also increases the dust load of the dust removal pipeline, causing unsafe factors. In the prior art, a pressure detection method is used to determine whether the pipeline to be detected is dusty. Typically, an air probe is arranged at a position where blockage is expected to occur (such as a bend), and air is blown in the airflow direction at regular intervals to detect the pressure at the position. When the pressure increases to a specified value, it indicates that blockage has occurred. This method only has a detection effect when dust deposition is very serious or even when the pipeline to be detected is blocked. It cannot be used when dust deposition is not very serious, and has limitations in use.

[0003] Under the current requirement of ultra-low emission, the traditional method of determining whether the pipeline is dusty is to use a field sampling method, which requires the construction of a temporary platform to open a hole in the pipeline to be monitored, and then sampling and detection are performed from the hole. This method of determining whether the pipeline to be monitored is dusty requires repeated sampling each time, and after sampling, the pipeline to be monitored needs to be resealed to ensure the sealing of the dust removal pipeline. This method not only has a long cycle but also increases labor costs. UTILITY MODEL CONTENT

[0004] The utility model aims at the above problems in the prior art and provides a system for monitoring dust deposition in a dust removal pipeline.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows:

[0006] A system for monitoring dust deposition in a dust removal pipeline, comprising a pipeline to be monitored, a compressed gas inlet and a dust concentration detection port being arranged on the pipeline to be monitored, and the dust concentration detection port being located at a position downstream of the compressed gas inlet along the airflow direction inside the pipeline to be monitored,

[0007] A pulse injection valve is arranged at the compressed gas inlet, the nozzle of the pulse injection valve is in sealed connection with the compressed gas inlet, and the solenoid valve of the pulse injection valve is connected with the control button of the control cabinet and the power supply arranged inside the control cabinet through a control cable;

[0008] A dust concentration sensor is arranged at the dust concentration detection port, the collection probe of the dust concentration sensor is sealed through the dust concentration detection port and located inside the pipeline to be monitored, and the signal processing unit of the dust concentration sensor is connected with the display screen of the control cabinet through a signal cable.

[0009] The outer wall of the pipeline to be monitored is provided with a pulse jet valve fixing component and a dust concentration sensor fixing component. The outer shell of the pulse jet valve is fixed on the pulse jet valve fixing component, and the outer shell of the dust concentration sensor is fixed on the dust concentration sensor fixing component.

[0010] Both the pulse jet valve mounting hardware and the dust concentration sensor mounting hardware are butt-welded flanges.

[0011] The pipeline to be monitored is placed horizontally, and the compressed gas inlet is located at the bottom of the pipeline.

[0012] The dust concentration detection port is located at the top of the pipeline to be monitored.

[0013] The nozzle seal of the pulse jet valve passes through the compressed gas inlet and is flush with the inner wall of the pipeline to be monitored.

[0014] The central axis of the dust concentration detection port coincides with the central axis of the compressed gas inlet and is perpendicular to the central axis of the pipeline to be monitored.

[0015] The dust concentration detection port is located downstream of the compressed gas inlet.

[0016] The beneficial technical effects of this utility model are:

[0017] This invention uses a control cabinet to control the opening and closing of a pulse jet valve to blow air into the pipeline under monitoring. The probe of a dust concentration sensor is installed inside the pipeline to monitor the dust concentration in real time. The dust concentration before and after the pulse jet valve blows is displayed on a screen, thereby determining whether there is dust accumulation in the dust removal system pipeline. It can also compare the dust concentration data recorded after different pulse jet valve blows to understand the dust accumulation development. The nozzle of the pulse jet valve and the probe of the dust concentration sensor are sealed to the pipeline under monitoring, so there is no need to sample from the opening of the pipeline under monitoring during detection. This invention has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the pulse jet valve.

[0020] Figure 3 This is a schematic diagram of the dust concentration sensor.

[0021] Figure 4 This is a structural diagram of the control cabinet;

[0022] Figure 5is a structure schematic diagram that compressed gas inlet and dust concentration detection port are arranged on a pipeline to be monitored;

[0023] In the figure: 1-pulse jet valve, 1-1-nozzle, 1-2-solenoid valve, 1-3-compressed gas inlet, 2-dust concentration sensor, 2-1-acquisition probe, 2-2-signal processing unit, 3-control cabinet, 3-1-display screen, 3-2-control button, 4-pulse jet valve fixing part, 5-dust concentration sensor fixing part, 6-pipeline to be monitored, 6-1-compressed gas inlet, 6-2-dust concentration detection port, 7-control cable, 8-signal cable. DETAILED DESCRIPTION

[0024] For the convenience of those skilled in the art to understand and use the utility model, the utility model is further described in detail below in combination with examples, and it should be understood that the examples described herein are only for illustration and explanation of the utility model and are not used to limit the utility model.

[0025] As Figures 1-5 shown, a system for monitoring dust deposition in a dust removal pipeline, comprising a pulse jet valve 1, a dust concentration sensor 2, a control cabinet 3 and a pipeline to be monitored 6; the control cabinet 3 comprises a display screen 3-1 and a control button 3-2; the pulse jet valve 1 comprises a nozzle 1-1, a solenoid valve 1-2 and a compressed gas inlet 1-3, compressed gas enters from the compressed gas inlet 1-3 and is sprayed from the nozzle 1-1, the solenoid valve 1-2 is connected to the control button 3-2 arranged on the control cabinet 3 and the power source arranged inside the control cabinet 3 through a control cable 7, and the control button 3-2 can be pressed and released to control the nozzle 1-1 to spray compressed gas and stop spraying compressed gas; the dust concentration sensor 2 comprises an acquisition probe 2-1 and a signal processing unit 2-2, the acquisition probe 2-1 is a detection part and is used for collecting dust data, the signal processing unit 2-2 is connected to the display screen 3-1 through a signal cable 8, the signal processing unit 2-2 converts the dust data collected by the acquisition probe 2-1 into a 4-20mA analog signal and transmits the signal to the display screen 3-1 through the signal cable 8, and the display screen 3-1 digitally displays the dust concentration and records and saves the data.

[0026] The pipeline to be monitored 6 is provided with a compressed gas inlet 6-1, and a pulse jet valve fixing part 4 is arranged on the outer wall of the pipeline to be monitored 6 at the compressed gas inlet 6-1, the pulse jet valve fixing part 4 is fixed with the pulse jet valve 1, the shell of the pulse jet valve 1 is fixed on the pulse jet valve fixing part 4, and the nozzle 1-1 of the pulse jet valve 1 is connected to the compressed gas inlet 6-1 in a sealed manner, the compressed gas sprayed from the nozzle 1-1 is sprayed into the pipeline to be monitored 6 and stirs the dust deposition in the pipeline to be monitored 6, so that the dust concentration in the pipeline to be monitored 6 is changed;

[0027] The dust concentration detection port 6-2 is arranged on the to-be-monitored pipeline 6, the dust concentration sensor fixing part 5 is arranged on the outer wall of the to-be-monitored pipeline 6, the dust concentration sensor 2 is fixed on the dust concentration sensor fixing part 5, the shell of the dust concentration sensor 2 is fixed on the dust concentration sensor fixing part 5, and the collection probe 2-1 of the dust concentration sensor 2 is sealed through the dust concentration detection port 6-2 and located in the to-be-monitored pipeline 6. Since the dust in the to-be-monitored pipeline 6 moves along the airflow direction (arrow direction), the dust concentration detection port 6-2 is located at a position downstream of the compressed gas inlet 6-1 along the airflow direction. Figure 1 In the embodiment, the to-be-monitored pipeline 6 is horizontally arranged, the dust at the bottom of the to-be-monitored pipeline 6 is the most, the compressed gas inlet 6-1 is arranged at the bottom of the to-be-monitored pipeline 6, the corresponding pulse blowing valve 1 is fixed at the compressed gas inlet 6-1 through the pulse blowing valve fixing part 4, the dust concentration detection port 6-2 is arranged at the top of the to-be-monitored pipeline 6, the corresponding dust concentration sensor 2 is fixed at the dust concentration detection port 6-2 through the dust concentration sensor fixing part 5, and the nozzle 1-1 of the pulse blowing valve 1 is sealed through the compressed gas inlet 6-1 and flush with the inner wall of the to-be-monitored pipeline 6.

[0028] In some embodiments, the central axis of the dust concentration detection port 6-2 coincides with the central axis of the compressed gas inlet 6-1 and is perpendicular to the central axis of the to-be-monitored pipeline 6. The injection of the pulse blowing valve 1 acts on the dust accumulated at the bottom of the to-be-monitored pipeline 6; the high-pressure gas and the dust accumulated at the bottom move upward under the stirring of the compressed air until the dust concentration detection port 6-2 at the top of the to-be-monitored pipeline 6, and the dust concentration data is detected by the dust concentration sensor 2.

[0029] In some embodiments, the central axis of the dust concentration detection port 6-2 coincides with the central axis of the compressed gas inlet 6-1 and is perpendicular to the central axis of the to-be-monitored pipeline 6. The injection of the pulse blowing valve 1 acts on the dust accumulated at the bottom of the to-be-monitored pipeline 6; the high-pressure gas and the dust accumulated at the bottom move upward under the stirring of the compressed air until the dust concentration detection port 6-2 at the top of the to-be-monitored pipeline 6, and the dust concentration data is detected by the dust concentration sensor 2.

[0030] In some embodiments, the central axis of the dust concentration detection port 6-2 coincides with the central axis of the compressed gas inlet 6-1 and is perpendicular to the central axis of the to-be-monitored pipeline 6. The injection of the pulse blowing valve 1 acts on the dust accumulated at the bottom of the to-be-monitored pipeline 6; the high-pressure gas and the dust accumulated at the bottom move upward under the stirring of the compressed air until the dust concentration detection port 6-2 at the top of the to-be-monitored pipeline 6, and the dust concentration data is detected by the dust concentration sensor 2.

[0031] In the embodiment, the dust concentration sensor fixing part 5 is a butt welding flange. The pulse blowing valve fixing part 4 is a butt welding flange.

[0032] In use, the control button 3-2 on the control cabinet 3 is pressed, the power supply inside the control cabinet 3 supplies power to the electromagnetic valve 1-2 arranged on the pulse blowing valve 1 through the control cable 7, the electromagnetic valve 1-2 is opened, the compressed air enters the inside of the to-be-monitored pipeline 6 through the compressed gas inlet 1-3, the electromagnetic valve 1-2, the nozzle 1-1 and the compressed gas inlet 6-1 to stir the accumulated dust inside the to-be-monitored pipeline 6, at this time, the dust concentration inside the to-be-monitored pipeline 6 rises; the signal processing unit 2-2 arranged on the dust concentration sensor 2 converts the data collected by the collection probe 2-1 into a 4-20mA analog signal, the analog signal is transmitted to the display screen 3-1 arranged on the control cabinet 3 through the signal cable 8, the display screen 3-1 digitally displays the dust concentration and records and saves; since the display screen 3-1 on the control cabinet 3 is real-time display of the dust concentration inside the to-be-monitored pipeline 6, therefore, the dust concentration recorded before and after the pulse blowing valve 1 blows can be compared to know whether there is accumulated dust in the to-be-monitored pipeline 6. Further, the dust concentration data recorded after different times of pulse blowing valve 1 blowing can also be compared to know the development of the accumulated dust.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A system for monitoring the fouling of a dedusting duct, comprising a duct (6) to be monitored, characterized in that, The compressed gas inlet (6-1) and the dust concentration detection port (6-2) are arranged on the to-be-monitored pipeline (6), and the dust concentration detection port (6-2) is located at a position downstream of the compressed gas inlet (6-1) along the direction of the airflow in the to-be-monitored pipeline (6), The pulse injection valve (1) is arranged at the compressed gas inlet (6-1), the nozzle (1-1) of the pulse injection valve (1) is in sealing connection with the compressed gas inlet (6-1), and the electromagnetic valve (1-2) of the pulse injection valve (1) is connected with the control button (3-2) of the control cabinet (3) and the power supply arranged in the control cabinet (3) through the control cable (7); The dust concentration sensor (2) is arranged at the dust concentration detection port (6-2), the collection probe (2-1) of the dust concentration sensor (2) penetrates the dust concentration detection port (6-2) in a sealing manner and is located in the to-be-monitored pipeline (6), and the signal processing unit (2-2) of the dust concentration sensor (2) is connected with the display screen (3-1) of the control cabinet (3) through the signal cable (8).

2. The system for monitoring the dusting pipe ash deposition condition according to claim 1, characterized in that, The to-be-monitored pipeline (6) is provided with a pulse injection valve fixing part (4) and a dust concentration sensor fixing part (5), the shell of the pulse injection valve (1) is fixed on the pulse injection valve fixing part (4), and the shell of the dust concentration sensor (2) is fixed on the dust concentration sensor fixing part (5).

3. The system for monitoring the dusting pipe ash deposition condition according to claim 2, characterized in that, The pulse injection valve fixing part (4) and the dust concentration sensor fixing part (5) are both butt-welded flanges.

4. The system for monitoring the dusting pipe ash deposition condition according to claim 1, characterized in that, The to-be-monitored pipeline (6) is horizontally placed, and the compressed gas inlet (6-1) is arranged at the bottom of the to-be-monitored pipeline (6).

5. The system for monitoring the fouling condition of a dedusting pipeline according to claim 4, characterized in that, The dust concentration detection port (6-2) is arranged at the top of the to-be-monitored pipeline (6).

6. The system for monitoring the fouling condition of a dedusting pipeline according to claim 5, characterized in that, The nozzle (1-1) of the pulse injection valve (1) penetrates the compressed gas inlet (6-1) in a sealing manner and is flush with the inner wall of the to-be-monitored pipeline (6).

7. The system for monitoring the dusting pipe ash deposition condition according to claim 5, characterized in that, The central axis of the dust concentration detection port (6-2) coincides with the central axis of the compressed gas inlet (6-1) and is perpendicular to the central axis of the to-be-monitored pipeline (6).

8. The system for monitoring the dusting pipe ash deposition condition according to claim 5, characterized in that, The dust concentration detection port (6-2) is located at a position downstream of the compressed gas inlet (6-1).

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