Anti-blocking online detection device for accumulated dust of flue dust hopper of sintering flue gas circulation system

Abstract

The utility model provides a sintering flue gas circulation system flue dust hopper accumulated dust anti-blocking on-line detection device comprising a detection pipeline, the head end of which is arranged at the 3 / 4 height position of a detected flue dust hopper; an in-situ pressure gauge; a pressure transmitter remote meter; and the quick dredging ball valve, the in-situ pressure gauge and the pressure transmitter remote transmission meter are arranged at the tail end of the detection pipeline. According to the utility model, the dust accumulation condition in the dust hopper can be found very intuitively, the dust accumulation reason can be analyzed in time, the fault can be eliminated, the use effect is excellent, the applicability is high, and the equipment cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering flue gas circulation, and in particular relates to an online detection device for preventing dust accumulation and blocking of a flue ash hopper of a sintering flue gas circulation system. Background Art

[0002] In recent years, the application of sintering flue gas circulation technology in the steel industry has received very widespread attention and has become a "pollution reduction and carbon reduction" technology that is highly encouraged by the country and the industry. During the sintering production process, a small amount of sintering materials and reaction products will enter the flue gas circulation system along with the production flue gas, which is what we often call particulate matter pollutants in the flue gas. The particulate matter in the flue gas will vary in size and mass. As the flue gas system gradually deposits in the flue, the continuously accumulated particulate matter needs to be promptly removed from the production system. Generally, multiple ash hoppers are set up in the flue gas system to collect the settled particulate matter and discharge it in a timely manner to ensure the overall stable production of the entire flue gas circulation system.

[0003] During the production process of the sintering flue gas circulation system, the ash hopper ash discharge system will inevitably encounter problems such as large particle material jamming, ash discharge equipment failure and inadequate operation and management. As a result, the ash hopper is not discharged in time, causing particulate matter to accumulate continuously in the local flue. If it is not discovered and handled in time for a long time, the flue gas flow cross-section will be reduced or even completely blocked, thereby affecting the normal and stable operation of the production system; and the accumulation of ash in the local flue may cause the load of the flue support structure to far exceed the design capacity, resulting in a safety accident.

[0004] The interior of the flue ash hopper is a production blind spot, making it difficult to visually inspect the internal conditions. Equipping each flue ash hopper in the flue gas circulation system with a level detection device, such as a level meter or level switch, would significantly increase project investment. Furthermore, the production and operating environment inside the ash hopper is relatively harsh, with high levels of particulate matter. Level detection instruments can wear so severely that their service life cannot be guaranteed, significantly increasing operating and maintenance costs. Utility Model Content

[0005] One object of the utility model is to provide an online detection device for preventing ash accumulation and blocking in a flue ash hopper of a sintering flue gas circulation system, and to provide at least the advantages to be described later.

[0006] Another object of the present invention is to provide an online detection device for preventing ash accumulation and blockage in the flue ash hopper of a sintering flue gas circulation system, which can very intuitively detect the ash accumulation in the ash hopper, and can timely analyze the cause of the ash accumulation and eliminate the fault. The invention has excellent use effect, strong applicability, and low equipment cost.

[0007] The technical solution of the utility model is as follows:

[0008] An online detection device for preventing ash accumulation and blocking in the flue ash hopper of a sintering flue gas circulation system includes:

[0009] The detection pipe, the head end of which is set at the 3 / 4 height of the ash hopper of the flue being detected;

[0010] On-site pressure gauge;

[0011] Pressure transmitter remote meter;

[0012] and a quick-dredging ball valve, which, together with the local pressure gauge and the remote pressure transmitter, are all arranged at the end of the detection pipeline.

[0013] Preferably, in the sintering flue gas circulation system flue ash hopper ash accumulation and blockage prevention online detection device,

[0014] The detection pipeline includes an upwardly inclined inner detection tube and a vertical outer detection tube;

[0015] An anti-wear protective sleeve is provided between the internal detection tube and the detected flue ash hopper.

[0016] Preferably, in the sintering flue ash hopper dust accumulation anti-blocking online detection device, the quick unblocking ball valve, the on-site pressure gauge and the remote pressure transmitter are installed at a height of 1.3-1.8m from the ground.

[0017] Preferably, in the on-line detection device for preventing ash accumulation and blockage in the flue ash hopper of the sintering flue gas circulation system, an ash discharge valve is provided at the bottom of the flue ash hopper being detected.

[0018] Preferably, in the on-line detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system, a plurality of flue ash hoppers to be detected are arranged in parallel.

[0019] Preferably, in the sintering flue gas circulation system flue ash hopper ash accumulation and blockage prevention online detection device,

[0020] A sleeve is provided on the outer side of the middle portion of the ash hopper of the flue being tested to form a smoke storage chamber;

[0021] The inner side wall of the ash hopper of the flue being tested is provided with a plurality of high-pressure nozzles communicating with the flue gas storage chamber;

[0022] The smoke storage chamber is connected to the smoke duct through a smoke pipeline.

[0023] The utility model has the following beneficial effects:

[0024] The quick unclogging ball valve is mainly used to clear the connecting pipes in time and easily by opening and closing the valve multiple times instantaneously and quickly when the connecting pipes inside and outside the ash hopper are occasionally blocked, causing the pressure detection instrument to be unable to accurately display the parameters.

[0025] The remote pressure transmitter can upload the detected pressure data signal to the automation control system in the central control room. During normal production, the control screen will display the normal production operation negative pressure, which is generally -10kPa~-17kPa. When the ash hopper is blocked due to long-term dust accumulation, the corresponding pressure data in the control system will show a value of 0. If this phenomenon lasts for more than 1 hour, an alarm will be issued, requiring maintenance personnel to promptly troubleshoot the ash hopper discharge equipment.

[0026] The on-site pressure gauge makes it easy for production inspectors to promptly detect dust accumulation in the ash hopper. It can also compare data with the remote pressure transmitter. When the on-site pressure gauge 4 shows 0, it is necessary to promptly check for faults.

[0027] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of an embodiment of an online detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system provided by the utility model;

[0029] Figure 2 A partial structural diagram of an embodiment of an online detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system provided by the utility model;

[0030] Figure 3 This is another partial structural diagram of an embodiment of the on-line detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system provided by the utility model;

[0031] Figure 4 This is a distribution diagram of an embodiment of an online detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system provided by the utility model. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0033] It should be understood that terms such as “having,” “including,” and “comprising” used herein do not prescribe the existence or addition of one or more other elements or combinations thereof.

[0034] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model provides an online detection device for preventing ash accumulation and blocking in the flue ash hopper of a sintering flue gas circulation system, which includes:

[0035] The detection pipe, the head end of which is set at the 3 / 4 height of the ash hopper of the flue being detected;

[0036] On-site pressure gauge;

[0037] Pressure transmitter remote meter;

[0038] and a quick-dredging ball valve, which, together with the local pressure gauge and the remote pressure transmitter, are all arranged at the end of the detection pipeline.

[0039] The quick unclogging ball valve is mainly used to clear the connecting pipes in time and easily by opening and closing the valve multiple times instantaneously and quickly when the connecting pipes inside and outside the ash hopper are occasionally blocked, causing the pressure detection instrument to be unable to accurately display the parameters.

[0040] The remote pressure transmitter can upload the detected pressure data signal to the automation control system in the central control room. During normal production, the control screen will display the normal production operation negative pressure, which is generally -10kPa~-17kPa. When the ash hopper is blocked due to long-term dust accumulation, the corresponding pressure data in the control system will show a value of 0. If this phenomenon lasts for more than 1 hour, an alarm will be issued, requiring maintenance personnel to promptly troubleshoot the ash hopper discharge equipment.

[0041] The on-site pressure gauge makes it easy for production inspectors to promptly detect dust accumulation in the ash hopper. It can also compare data with the remote pressure transmitter. When the on-site pressure gauge 4 shows 0, it is necessary to promptly check for faults.

[0042] In one embodiment of the on-line detection device for preventing ash accumulation and blocking in the flue ash hopper of the sintering flue gas circulation system provided by the present invention,

[0043] The detection pipeline includes an upwardly inclined inner detection tube and a vertical outer detection tube;

[0044] An anti-wear protective sleeve is provided between the internal detection tube and the detected flue ash hopper.

[0045] The external detection tube is connected to the inspection channel, which is convenient for inspectors to observe and perform production maintenance and repairs.

[0046] In one embodiment of the online detection device for preventing ash accumulation in the flue ash hopper of the sintering flue gas circulation system provided by the present invention, the quick-dredging ball valve, the on-site pressure gauge and the remote pressure transmitter are installed at a height of 1.3-1.8m from the ground.

[0047] In one embodiment of the on-line detection device for preventing ash accumulation and blockage in a flue ash hopper of a sintering flue gas circulation system provided by the present invention, an ash discharge valve is provided at the bottom of the flue ash hopper to be detected.

[0048] like Figure 4 As shown, in one embodiment of the on-line detection device for preventing ash accumulation and blockage in the flue ash hopper of the sintering flue gas circulation system provided by the present invention, the flue ash hopper to be detected is arranged in parallel in multiple numbers.

[0049] In one embodiment of the on-line detection device for preventing ash accumulation and blocking in the flue ash hopper of the sintering flue gas circulation system provided by the present invention,

[0050] A sleeve is provided on the outer side of the middle portion of the ash hopper of the flue being tested to form a smoke storage chamber;

[0051] The inner side wall of the ash hopper of the flue being tested is provided with a plurality of high-pressure nozzles communicating with the flue gas storage chamber;

[0052] The smoke storage chamber is connected to the smoke duct through a smoke pipeline.

[0053] In this way, the flue gas is sprayed to the inner wall of the ash hopper of the flue being inspected through the high-pressure nozzle, which can clean it and slow down the clogging process.

[0054] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An online detection device for preventing ash accumulation and blocking in the flue ash hopper of a sintering flue gas circulation system, characterized in that: include: The detection pipe, the head end of which is set at the 3 / 4 height of the ash hopper of the flue being detected; On-site pressure gauge; Pressure transmitter remote meter; and a quick-dredging ball valve, which, together with the local pressure gauge and the remote pressure transmitter, are all arranged at the end of the detection pipeline.

2. The on-line detection device for preventing ash accumulation and blocking of flue ash hopper in sintering flue gas circulation system according to claim 1, characterized in that: The detection pipeline includes an upwardly inclined inner detection tube and a vertical outer detection tube; An anti-wear protective sleeve is provided between the internal detection tube and the detected flue ash hopper.

3. The on-line detection device for preventing ash accumulation and blocking of flue ash hopper in sintering flue gas circulation system according to claim 2, characterized in that: The quick-dredging ball valve, the on-site pressure gauge and the remote pressure transmitter are installed at a height of 1.3-1.8m from the ground.

4. The on-line detection device for preventing ash accumulation and blocking of flue ash hopper in sintering flue gas circulation system according to claim 3 is characterized in that: An ash discharge valve is provided at the bottom of the ash hopper of the flue being tested.

5. The on-line detection device for preventing ash accumulation and blocking of flue ash hopper in sintering flue gas circulation system according to claim 4, characterized in that: The detected flue ash hoppers are arranged in parallel in multiple arrangements.

6. The on-line detection device for preventing ash accumulation and blocking of flue ash hopper in sintering flue gas circulation system according to claim 5, characterized in that: A sleeve is provided on the outer side of the middle part of the ash hopper of the flue being tested to form a smoke storage chamber; a plurality of high-pressure nozzles connected to the smoke storage chamber are provided on the inner side wall of the ash hopper of the flue being tested; the smoke storage chamber is connected to the flue through a smoke pipeline.

Images