An electric control system for enhancing injection of a dry quenching secondary dust collector

Abstract

The utility model provides a kind of to enhance dry quenching secondary dust collector injection electric control system, belong to dry quenching secondary dust collector technical field, comprising: nitrogen tank, secondary dust collector, nitrogen injection pipeline, electric control pneumatic diaphragm valve, electric control system and dust concentration detector;Multiple nitrogen injection pipelines are arranged in secondary dust collector, and the nozzle of nitrogen injection pipeline is evenly arranged in secondary dust collector, and nitrogen injection pipeline is communicated with nitrogen tank;Electric control pneumatic diaphragm valve includes diaphragm valve and solenoid valve, diaphragm valve and solenoid valve are arranged on each nitrogen injection pipeline, and diaphragm valve is opened and closed by solenoid valve control;Electric control system is electrically connected with solenoid valve, and solenoid valve is controlled to be powered on or powered off;Secondary dust collector is equipped with dust concentration detector, and dust concentration detector is interlocked with electric control system.

Description

Technical Field

[0001] This utility model belongs to the technical field of secondary dust collectors for dry quenching coke, and specifically relates to an electrical control system for enhancing the pulse jet of a secondary dust collector for dry quenching coke. Background Technology

[0002] The coke dust in the dry quenching flue gas of coking plants has a needle-like structure. This type of coke dust is difficult to completely remove by existing dry quenching secondary dust collectors. The coke dust will adhere to and accumulate on the inner wall of the dust collector, forming a dust layer. When the dust layer falls off naturally, it will impact the circulating fan and circulating air duct, causing increased wear and hazard to the operation of the circulating fan, requiring regular shutdown and maintenance.

[0003] Patent application No. 202422511774.2 discloses a low-energy dust removal device for a bag filter, comprising several air distribution chambers, several exhaust pipes, a rotary drive mechanism, a generator, an impeller, a charge / discharge controller, and a battery. The generator has an impeller located inside the flue at its drive end. The generator, battery, and rotary drive mechanism are all electrically connected to the charge / discharge controller. Several exhaust pipes are rotatably connected to the upper end of each air distribution chamber. Each exhaust pipe includes a dust removal section located beside a corresponding dust collector filter bag. The side of the dust removal section closest to the dust collector filter bag has through holes arranged sequentially from top to bottom. Each air distribution chamber is equipped with a rotary drive mechanism to drive the exhaust pipes thereon to rotate.

[0004] Currently, although existing dry quenching coke dust collectors have multiple cleaning pipes, most of them use a single jet cleaning mode. They cannot dynamically adjust the corresponding cleaning pipes according to the dust accumulation, which can easily lead to problems such as insufficient or excessive cleaning in certain areas. Utility Model Content

[0005] Based on the above-mentioned technical problems, the purpose of this utility model is to provide an electronic control system for enhancing the blowing of secondary dust collectors in dry quenching coke. By setting up multiple nitrogen blowing pipes and equipping each nitrogen blowing pipe with an independent electronically controlled pneumatic diaphragm valve, and by using a dust concentration detector to monitor the dust accumulation in the secondary dust collector in real time, the dust in different areas can be grouped and alternately blown, thereby avoiding the problems of insufficient or excessive local dust removal.

[0006] The specific technical solution is as follows: An electronic control system for enhancing the pulse jetting of a secondary dust collector in dry quenching coke oven includes: a nitrogen tank, a secondary dust collector, nitrogen pulse jetting pipes, an electrically controlled pneumatic diaphragm valve, an electronic control system, and a dust concentration detector. Multiple nitrogen pulse jetting pipes are installed within the secondary dust collector, with the nozzles of the pipes evenly distributed within the collector, and the pipes connected to the nitrogen tank. The electrically controlled pneumatic diaphragm valve includes a diaphragm valve and a solenoid valve; each nitrogen pulse jetting pipe is equipped with both a diaphragm valve and a solenoid valve, and the diaphragm valve is controlled to open and close via the solenoid valve. The electronic control system is electrically connected to the solenoid valve, controlling its energization or de-energization. The secondary dust collector is equipped with a dust concentration detector, which is interlocked with the electronic control system.

[0007] In addition, the electronic control system for enhanced dry quenching coke secondary dust collector pulse jetting in the above-mentioned technical solution provided by this utility model may also have the following additional technical features: In the above technical solution, the electrical control system includes: a control box and an operation panel; the control box integrates a PLC controller, cables, circuit breakers and surge protectors, the cables connect the circuit breakers and surge protectors and supply power to the PLC controller; the control panel is located on the outside of the control box, and the control panel includes a sequence mode switch, a working mode switch, a start button, a stop button, a running indicator light and a fault indicator light.

[0008] In the above technical solution, a temperature-controlled heater is installed inside the control box.

[0009] In the above technical solution, the solenoid valves are divided into odd-numbered solenoid valves and even-numbered solenoid valves; the circuit breaker is divided into a main circuit breaker and five branch circuit breakers; the five branch circuit breakers are connected to the cable through the main circuit breaker, and the five branch circuit breakers are respectively connected to the odd-numbered solenoid valves, the even-numbered solenoid valves, the PLC power supply, the temperature control heater and the backup power supply.

[0010] In the above technical solution, the surge protector is connected in parallel between the main circuit breaker and the cable.

[0011] In the above technical solution, the PLC controller is equipped with a digital input module, a digital output module, and an analog input module, which are used to receive instructions and control the opening and closing of each solenoid valve.

[0012] The present invention provides an electronic control system for enhancing the pulse jet cleaning of a secondary dust collector in dry quenching coke ovens. Compared with existing technologies, the advantages are as follows: 1. The dust concentration detector monitors the dust accumulation in the secondary dust collector in real time. The electrical control system dynamically adjusts the opening and closing time and sequence of each nitrogen injection pipe according to the detection data, reducing the problem of insufficient or excessive local dust cleaning, and ensuring that nitrogen injection covers the entire secondary dust collector, thereby improving the dust removal effect and reducing the wear caused by dust falling on the circulating fan and circulating air duct in the secondary dust collector.

[0013] 2. By equipping each nitrogen injection pipeline with an independent solenoid valve and diaphragm valve, the solenoid valves are divided into odd-numbered solenoid valves and even-numbered solenoid valves, and independently controlled by a circuit breaker, thereby realizing the grouping and alternating injection of dust in different areas.

[0014] 3. By dividing the solenoid valves into odd-numbered and even-numbered groups, when one group loses power due to a circuit breaker failure or other reasons, the other group can still continue to work, thus ensuring that the system can still operate at half load during the maintenance of the fault circuit breaker. Attached Figure Description

[0015] Figure 1 The flowchart is a flowchart of an electrical control system for enhanced pulse jet cleaning in a dry quenching coke secondary dust collector according to this utility model; Figure 2 This is a schematic diagram of the control panel of this utility model; Figure 3 This is a single-line diagram of the power supply system of this utility model; Figure 4 This is a schematic diagram of the control system of this utility model; Figure 5 A schematic diagram of the control system of this utility model; Figure 6 This is a diagram illustrating the blowing sequence of this utility model; in, Figures 1 to 2 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10 Nitrogen tank, 11 Secondary dust collector, 12 Nitrogen injection pipeline, 13 Electrically controlled pneumatic diaphragm valve, 14 Electrical control system, 141 Control box, 142 Operation panel, 15 Sequence mode conversion switch, 16 Working mode conversion switch, 17 Start button, 18 Stop button, 19 Running indicator light, 20 Fault indicator light. Detailed Implementation

[0016] The following are specific implementation cases and appendices. Figure 1-6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0017] An electronic control system for enhancing the blowing of a secondary dust collector in dry quenching coke includes: a nitrogen tank 10, a secondary dust collector 11, nitrogen blowing pipes 12, an electrically controlled pneumatic diaphragm valve 13, an electronic control system 14, and a dust concentration detector. Multiple nitrogen blowing pipes 12 are installed within the secondary dust collector 11, with the nozzles of the nitrogen blowing pipes 12 evenly distributed within the secondary dust collector 11, and the nitrogen blowing pipes 12 are connected to the nitrogen tank 10. The electrically controlled pneumatic diaphragm valve 13 includes a diaphragm valve and a solenoid valve; each nitrogen blowing pipe 12 is equipped with both a diaphragm valve and a solenoid valve, and the diaphragm valve is controlled to open and close via the solenoid valve. The electronic control system 14 is electrically connected to the solenoid valve, controlling its energization or de-energization. The secondary dust collector 11 is equipped with a dust concentration detector, and the dust concentration detector is interlocked with the electronic control system 14.

[0018] With the above structure, the dust concentration detector monitors the dust accumulation in the secondary dust collector 11 in real time. The electrical control system 14 dynamically adjusts the opening and closing time and sequence of each nitrogen injection pipe 12 based on the detection data, reducing the problem of insufficient or excessive local cleaning and ensuring that nitrogen injection covers the entire secondary dust collector 11, thus improving the dust removal effect and reducing the wear caused by dust falling on the circulating fan and circulating air ducts in the secondary dust collector 11. By equipping each nitrogen injection pipe 12 with an independent solenoid valve and diaphragm valve, and controlling them independently through the electrical control system 14, it is possible to group and alternately inject dust from different areas.

[0019] Specifically, when the solenoid valve is energized, the diaphragm valve opens, and compressed nitrogen is blown into the secondary dust collector 11. When the solenoid valve is de-energized, the diaphragm valve closes, and compressed nitrogen stops being blown in.

[0020] Specifically, by interlocking the dust concentration detector with the electronic control system 14, ineffective blowing is reduced, thereby lowering nitrogen consumption.

[0021] Specifically, the number of electro-pneumatic diaphragm valves 13 and nitrogen injection pipes 12 can be increased or decreased according to the size of the dry quenching coke secondary dust collector 11, and the electrical control system 14 is also modified accordingly.

[0022] By dividing the solenoid valves into odd-numbered and even-numbered groups, when one group loses power due to a circuit breaker failure or other reasons, the other group can still continue to work, thus ensuring that the system can still operate at half load during the maintenance of the fault circuit breaker.

[0023] In an embodiment of this utility model, the electrical control system 14 includes: a control box 141 and an operation panel 142; the control box 141 integrates a PLC controller, cables, circuit breakers and surge protectors, the cables connect the circuit breakers and surge protectors and supply power to the PLC controller; the control panel is located on the outside of the control box 141, and the control panel includes a sequence mode switch 15, a working mode switch 16, a start button 17, a stop button 18, a running indicator light 19 and a fault indicator light 20.

[0024] Specifically, in this embodiment, the power supply system is an AC220V power supply, and the cable transmits the AC220V power to the electrical equipment.

[0025] Specifically, the control box 141 is also equipped with a transparent observation window for observing the operating status of the components inside the box, and a touch screen can also be installed on the control box 141.

[0026] In an embodiment of this utility model, a temperature-controlled heater is provided inside the control box 141.

[0027] By equipping the control box 141 with a temperature-controlled heater, it is made able to adapt to the temperature and humidity of low-temperature and humid seasons and extremely cold seasons.

[0028] The temperature-controlled heater uses a combination of a TESHOW temperature controller and a PT100 thermal resistor to regulate the temperature and humidity inside the control box 141.

[0029] In the embodiments of this utility model, the solenoid valves are divided into odd-numbered solenoid valves and even-numbered solenoid valves; the circuit breaker is divided into a main circuit breaker and five branch circuit breakers; the five branch circuit breakers are respectively connected to the cable through the main circuit breaker, and the five branch circuit breakers are respectively connected to the odd-numbered solenoid valves, the even-numbered solenoid valves, the PLC power supply, the temperature control heater and the backup power supply.

[0030] By dividing the solenoid valves into odd-numbered and even-numbered arrays, the odd-numbered and even-numbered arrays can be opened alternately, thus avoiding a sudden drop in nitrogen pressure or excessive consumption caused by all solenoid valves opening at the same time.

[0031] When the dust concentration is low, the amount of air jetting can be reduced by turning on the air jetting in groups, thus reducing energy consumption. When the dust concentration is high, all the air jetting can be turned on at the same time to increase the dust removal intensity.

[0032] like Figure 2 As shown, QA1 is the main circuit breaker, QA2-QA6 are branch circuit breakers, SPD is the surge protector, and 1P+N+PE is a three-core cable.

[0033] In an embodiment of this utility model, the surge protector is connected in parallel between the main circuit breaker and the cable.

[0034] By installing surge protectors, the PLC controller can be protected, reducing damage to the system caused by external overvoltages.

[0035] In embodiments of this utility model, the PLC controller is provided with a digital input module, a digital output module, and an analog input module, which are used to receive instructions and control the opening and closing of each solenoid valve.

[0036] In an embodiment of this utility model, the control box 141 is provided with a rainproof eave, and the control box 141 is a square box made of double-layer stainless steel panels.

[0037] By setting up rainproof eaves to prevent rainwater from directly entering the enclosure, the risk of rainwater leakage is effectively reduced, especially in heavy rain or strong winds. By setting the control box 141 as a double-layer stainless steel structure, moisture can be further isolated.

[0038] Implementation process: In this embodiment, the electro-pneumatic diaphragm valve spraying modes include sequential mode and working state mode.

[0039] Among them, the sequential blowing modes of the electro-pneumatic diaphragm valve are mainly three types: Mode 1: Perform intermittent blowing according to the odd and even number order of the diaphragm valve number.

[0040] Mode 2: Blow air in the order of the diaphragm valves' natural numbers.

[0041] Mode 3: Blow air according to the order of the area groups.

[0042] Specifically, the sequential mode is activated via a sequential mode conversion switch, and the signal is then connected to the control system.

[0043] The working modes of the electro-pneumatic diaphragm valve injection are divided into single-cycle and cyclic.

[0044] A single operation involves pressing the start button on the control panel to perform one complete blowing cycle of mode 1, mode 2, or mode 3, and the stop button can be used for terminal operation.

[0045] The cycle involves pressing the start button 17 to perform a cycle of blowing in mode 1, mode 2, or mode 3 until the stop button is pressed, at which point the system stops working.

[0046] Specifically, the operating mode is activated by an operating mode conversion switch, and the signal is then connected to the control system.

[0047] Specifically, in this embodiment, the blowing time is the working time for a single diaphragm valve to perform one blowing from the open state to the closed state; the single interval time is the interval between the end of the previous blowing and the start of the next blowing for a single diaphragm valve; the cycle waiting time is the interval between the completion of the previous "single" operation and the start of the next "single" operation for all diaphragm valves in the "cycle" working state; the number of cycles is that in the "cycle" working state, the program defaults to infinite loop until the system is stopped manually or due to a fault, but the number of cycles can also be specified for flexible application.

[0048] like Figure 3 As shown, QA is the circuit breaker, G is the electro-pneumatic diaphragm valve, SAC1 is the sequence mode switch, SAC2 is the working mode switch, SF is the start button, SS is the stop button, PGG is the running indicator light, and PGY is the fault indicator light.

[0049] In this embodiment, 50 nitrogen injection pipes and electro-pneumatic diaphragm valves are provided, and their injection sequence is as follows: Figure 5 As shown.

[0050] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electronic control system for enhancing the pulse-jet cleaning of a secondary dust collector in dry quenching coke ovens, characterized in that, include: The system comprises a nitrogen tank, a secondary dust collector, nitrogen injection pipes, an electrically controlled pneumatic diaphragm valve, an electrical control system, and a dust concentration detector. The secondary dust collector is equipped with multiple nitrogen injection pipes, the nozzles of which are evenly distributed within the secondary dust collector, and the nitrogen injection pipes are connected to the nitrogen tank. The electrically controlled pneumatic diaphragm valve includes a diaphragm valve and a solenoid valve; each nitrogen injection pipe is equipped with both a diaphragm valve and a solenoid valve, and the diaphragm valve is controlled to open and close via the solenoid valve. The electrical control system is electrically connected to the solenoid valve, controlling its energization or de-energization. The secondary dust collector is equipped with a dust concentration detector, which is interlocked with the electrical control system.

2. The electronic control system for enhanced pulse-jet cleaning of a secondary dust collector in dry quenching as described in claim 1, characterized in that, The electrical control system includes a control box and a control panel. The control box integrates a PLC controller, cables, circuit breakers, and surge protectors. The cables connect the circuit breakers and surge protectors and supply power to the PLC controller. The control panel is located on the outside of the control box and includes a sequence mode switch, a working mode switch, a start button, a stop button, a running indicator light, and a fault indicator light.

3. The electronic control system for enhanced pulse-jet cleaning of a secondary dust collector in dry quenching as described in claim 2, characterized in that, The control box is equipped with a temperature-controlled heater.

4. The electronic control system for enhanced pulse-jet cleaning of a secondary dust collector in dry quenching as described in claim 3, characterized in that, The solenoid valves are divided into odd-numbered solenoid valves and even-numbered solenoid valves; the circuit breaker is divided into a main circuit breaker and five branch circuit breakers; the five branch circuit breakers are connected to the cable through the main circuit breaker, and the five branch circuit breakers are respectively connected to the odd-numbered solenoid valves, the even-numbered solenoid valves, the PLC power supply, the temperature control heater, and the backup power supply.

5. The electronic control system for enhanced pulse-jet cleaning of a secondary dust collector in dry quenching as described in claim 4, characterized in that, The surge protector is connected in parallel between the main circuit breaker and the cable.

6. The electronic control system for enhanced pulse-jet cleaning of a secondary dust collector in dry quenching as described in claim 4, characterized in that, The PLC controller is equipped with a digital input module, a digital output module, and an analog input module, which are used to receive instructions and control the opening and closing of each solenoid valve.

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