Dry dedusting cloth bag leak detection system

Abstract

The utility model discloses a kind of dry dedusting cloth bag leak detection systems, including two or more cloth bag dust removal device, air inlet main pipe, air outlet main pipe, detection tube and dust detector, the air outlet of each cloth bag dust removal device is communicated with air outlet main pipe by air outlet branch pipe, three-way valve is installed on the air outlet branch pipe, the second outlet of each three-way valve is communicated with one end of detection tube, and the other end is communicated with detection tube, and dust detector is installed on air outlet main pipe.The utility model controls each three-way valve, and the coal gas in each air outlet branch pipe can be sequentially transported into the detection tube, and the dust detector detects the dust content of the coal gas in each air outlet branch pipe corresponding to each cloth bag dust removal device in turn, and one dust detector can realize the detection of the damage condition of all cloth bag dust removal devices, which greatly reduces the use amount of dust detector and reduces equipment cost.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment fault detection systems, and in particular to a dry dust collector bag leak detection system. Background Technology

[0002] In dry dust removal systems for blast furnace gas, bag filters are one of the core pieces of equipment, primarily responsible for the efficient filtration of dust in the blast furnace gas. If the dust content in the gas exceeds the standard, it can not only cause blockage of burner nozzles in downstream gas users, affecting normal combustion efficiency, but also cause wear on the impellers of gas turbines (such as BPRT units), leading to abnormal equipment vibration. In severe cases, it can even require shutdown for maintenance, resulting in production interruptions and economic losses.

[0003] Therefore, to ensure gas quality, dry dust collector bags must be inspected regularly. If any bags are found to be damaged, they must be replaced in time to prevent dust from leaking into the clean gas side.

[0004] Current methods for detecting bag filter damage, such as those disclosed in Chinese patent application number 201822270577.0, involve installing a dust detector near the clean gas outlet in the clean air chamber of the bag filter to monitor the dust concentration in the clean air in real time. When an abnormally high dust concentration is detected, it can be determined that the corresponding bag is damaged, thereby triggering an alarm or replacement prompt.

[0005] In practical applications, a single BPRT unit is typically paired with multiple dry dust collection bag systems. If the above detection method is used, each dust collection system needs to be equipped with an independent dust detector, resulting in a large number of devices, high investment costs, heavy maintenance workload, and high system complexity, which is not conducive to large-scale promotion and application. Utility Model Content

[0006] The purpose of this invention is to provide a dry dust collector bag leak detection system.

[0007] The technical solution to achieve the purpose of this utility model is: a dry dust collector bag leak detection system, comprising two or more bag dust collectors, an inlet main pipe, an outlet main pipe, a detection pipe, and a dust detector. The inlet of each bag dust collector is connected to the inlet main pipe through an inlet branch pipe, and the outlet of each bag dust collector is connected to the outlet main pipe through an outlet branch pipe. A three-way valve is installed on the outlet branch pipe. The three-way valve has an inlet, a first outlet, and a second outlet. The inlet of the three-way valve is connected to the outlet branch pipe near the side of the bag dust collector, and the first outlet of the three-way valve is connected to the outlet branch pipe near the side of the outlet main pipe. One end of the detection pipe is connected to the second outlet of each three-way valve, and the other end is connected to the detection pipe. The dust detector is installed on the outlet main pipe. The dust detector and all the three-way valves are each electrically connected to the same control unit.

[0008] Furthermore, the control unit is electrically connected to a display unit. During operation, the control unit can send the leak detection results of each of the bag filters to the display unit for display, allowing staff to promptly understand the damage status of each bag filter.

[0009] Furthermore, the control unit is electrically connected to an alarm unit. When the control unit determines that the bag filter is damaged, the control unit controls the alarm unit to issue an alarm, promptly stop the device, and inspect and replace the filter bag.

[0010] Furthermore, the control unit is any one of a PLC controller, an MCU controller, or a microcontroller.

[0011] Furthermore, the alarm unit includes any one or two of an alarm bell or an alarm light.

[0012] This utility model relates to a dry dust collector bag leak detection system. A three-way valve is installed on the outlet branch pipe, and a detection tube is provided. One end of the detection tube is connected to the second outlet of each three-way valve, and the other end is connected to the main outlet pipe. A dust detector is installed on the detection tube. By controlling each three-way valve, the gas in the outlet branch pipe corresponding to each bag dust collector can be sequentially delivered to the detection tube. The dust detector can then sequentially detect the dust content of the gas in the outlet branch pipe corresponding to each bag dust collector, thereby enabling leak detection and assessment of all bag dust collectors to determine their damage.

[0013] This utility model's dry dust collector bag leak detection system allows for the detection of damage to all baghouse dust collectors using a single dust detector, significantly reducing the number of dust detectors required. Although a three-way valve is added, the price of a single three-way valve ranges from tens to hundreds of yuan, while a single dust detector costs over a thousand yuan. Therefore, the overall cost of the dry dust collector bag leak detection system is greatly reduced, equipment maintenance is simpler, and it is more conducive to widespread adoption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the dry dust collector bag leak detection system of this utility model; Figure 2 This is a schematic diagram of the control structure of the dry dust collector bag leak detection system of this utility model. Detailed Implementation

[0015] The preferred embodiment of the dry dust collector bag leak detection system of this utility model will be described in detail below with reference to the accompanying drawings: like Figure 1 and Figure 2 As shown, a dry dust collector bag leak detection system includes two or more bag dust collectors 10, an inlet main pipe 1, an outlet main pipe 2, a detection pipe 3, and a dust detector 4. The inlet 101 of each bag dust collector 10 is connected to the inlet main pipe 1 via an inlet branch pipe 201, and the outlet 102 of each bag dust collector 10 is connected to the outlet main pipe 2 via an outlet branch pipe 202. A three-way valve 5 is installed on the outlet branch pipe 202, and the three-way valve 5 has an inlet 51, a first outlet 52, and a second outlet 53. Outlet 53, the inlet 51 of the three-way valve 5 is connected to the outlet branch pipe 202 near the side of the bag dust collector 10, the first outlet 52 of the three-way valve 5 is connected to the outlet branch pipe 202 near the side of the main outlet pipe 2, one end of the detection tube 3 is connected to the second outlet 53 of each of the three-way valves 5 and the other end is connected to the main outlet pipe 2, the dust detector 4 is installed on the detection tube 3; the dust detector 4 and all the three-way valves 5 are each electrically connected to the same control unit 6.

[0016] This utility model relates to a dry dust collector bag leak detection system. During operation, coal gas sequentially enters the bag filter 10 via the main inlet pipe 1, the branch inlet pipe 201, and the inlet 101 of the bag filter 10, where it is dedusted. The cleaned coal gas is then output from the outlet 102 of the bag filter 10, sequentially flowing through the branch outlet pipe 202, the inlet 51 of the three-way valve 5, the first outlet 52 of the three-way valve 5, the branch outlet pipe 202, and finally the main outlet pipe 2. During dust removal, the control unit 6 can sequentially control the three-way valves 5 on each branch outlet pipe 202, causing them to adjust in sequence. The coal gas in each branch outlet pipe 202 then sequentially enters the detection pipe 3 through the second outlet 53 of the three-way valve 5 and is ultimately sent to the main outlet pipe 2. When the gas in each of the outlet branch pipes 202 sequentially enters the detection pipe 3 through the second outlet 53 of the three-way valve 5, the dust detector 4 sequentially detects the dust in the gas sent into the detection pipe 3 from each outlet branch pipe 202 and transmits the detection data to the control unit 6 in real time. When the dust detector 4 detects that the amount of dust in the gas in the outlet branch pipe 202 exceeds the standard, the control unit 6 determines that the bag filter 10 corresponding to the current outlet 53 of the three-way valve 5 is damaged. In this way, the damage status of all the bag filter 10s can be detected.

[0017] This utility model's dry dust collector bag leak detection system, by installing the three-way valve 5 on the outlet branch pipe 202 and setting the detection tube 3, connects one end of the detection tube 3 to the second outlet 53 of each of the three-way valves 5 and the other end to the main outlet pipe 2. The dust detector 4 is installed on the detection tube 3, so that by controlling each of the three-way valves 5, the gas in the outlet branch pipe 202 corresponding to each of the bag dust collectors 10 can be sequentially transported to the detection tube 3. The dust detector 4 can take turns detecting the dust content of the gas in the outlet branch pipe 202 corresponding to each of the bag dust collectors 10, thereby realizing the leak detection of all the bag dust collectors 10 and detecting the damage of the bag dust collectors 10.

[0018] This utility model's dry dust collector bag leak detection system allows for the detection of damage to all bag filter devices 10 using only one dust detector 4, significantly reducing the number of dust detectors required. Although this utility model adds a three-way valve, the price of a single three-way valve ranges from tens to hundreds of yuan, while the price of a single dust detector exceeds one thousand yuan. Therefore, the total cost of the dry dust collector bag leak detection system is greatly reduced. Taking a BPRT unit with fourteen bag filter devices as an example, under the traditional scheme, fourteen bag filter devices require fourteen dust detectors, with a total cost in the tens of thousands of yuan range; while the dry dust collector bag leak detection system only requires fourteen three-way valves and one dust detector, reducing the total cost to the thousands of yuan range.

[0019] In this invention, the dry dust collector bag leak detection system preferably includes a control unit 6 electrically connected to a display unit 7. During operation, the control unit 6 can send the leak detection results of each of the bag dust collectors 10 to the display unit 7 for display, allowing staff to promptly understand the damage status of each bag dust collector 10.

[0020] In this invention, the dry dust collector bag leak detection system preferably includes a control unit 6 electrically connected to an alarm unit 8. When the control unit 6 determines that the bag dust collector 10 is damaged, the control unit 6 controls the alarm unit 8 to issue an alarm, promptly stopping the system and inspecting and replacing the bag.

[0021] In this utility model dry dust collector bag leak detection system, preferably, the control unit 6 is any one of a PLC controller, an MCU controller, or a single-chip microcomputer.

[0022] In this utility model dry dust collector bag leak detection system, preferably, the alarm unit 8 includes any one or two of an alarm bell or an alarm light.

[0023] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A dry dust collector bag leak detection system, characterized in that: The system includes two or more baghouse dust collectors, an inlet main pipe, an outlet main pipe, a detection pipe, and a dust detector. The inlet of each baghouse dust collector is connected to the inlet main pipe via an inlet branch pipe, and the outlet of each baghouse dust collector is connected to the outlet main pipe via an outlet branch pipe. A three-way valve is installed on each outlet branch pipe, having an inlet, a first outlet, and a second outlet. The inlet of the three-way valve is connected to the outlet branch pipe closest to the baghouse dust collector, and the first outlet of the three-way valve is connected to the outlet branch pipe closest to the outlet main pipe. One end of the detection pipe is connected to the second outlet of each three-way valve, and the other end is connected to the detection pipe. The dust detector is installed on the outlet main pipe. The dust detector and all the three-way valves are each electrically connected to the same control unit.

2. The dry dust collector bag leak detection system according to claim 1, characterized in that: The control unit is electrically connected to a display unit.

3. The dry dust collector bag leak detection system according to claim 1, characterized in that: The control unit is electrically connected to an alarm unit.

4. The dry dust collector bag leak detection system according to claim 1, characterized in that: The control unit is any one of a PLC controller, an MCU controller, or a microcontroller.

5. The dry dust collector bag leak detection system according to claim 3, characterized in that: The alarm unit includes any one or two of the following: an alarm bell or an alarm light.

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