CN219546997U - Atomizing gas device of dry dedusting evaporative cooler - Google Patents
Atomizing gas device of dry dedusting evaporative cooler Download PDFInfo
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- CN219546997U CN219546997U CN202320330114.7U CN202320330114U CN219546997U CN 219546997 U CN219546997 U CN 219546997U CN 202320330114 U CN202320330114 U CN 202320330114U CN 219546997 U CN219546997 U CN 219546997U
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Abstract
The utility model relates to an atomization gas device of a dry dedusting evaporative cooler, which comprises a nitrogen pipeline and a control unit, wherein the atomization gas pipeline is respectively connected with a steam pipeline and the nitrogen pipeline, a pressure transmitter, a shut-off valve and a regulating valve are arranged on the nitrogen pipeline, the shut-off valve is respectively connected with a digital quantity output end of the control unit, and the regulating valve is respectively connected with an analog quantity output end of the control unit. The utility model has the advantages that: a nitrogen pipeline is newly added, and when a steam pressure fluctuation or a steam supply system failure occurs in a steam source, the nitrogen supply system is switched; the on-site valves are connected into the control unit through ports, production operators realize single-start and single-stop operation of the cut-off valve and the regulating valve through the upper computer according to actual production conditions, the problems that production is affected due to overlong manual valve closing and nitrogen pouring time are solved, and the running state of equipment can be checked at any time through the upper computer; the transformation cost is low, the structure is simple, and the realization is easy.
Description
Technical Field
The utility model relates to an atomization gas device of a dry dedusting evaporative cooler.
Background
The converter steelmaking is an important steelmaking process of steel enterprises, gas mainly containing carbon monoxide, a small amount of carbon dioxide and other trace components is generated in the converter blowing process, a large amount of ferric oxide, metallic iron particles and other tiny particle solid dust are also entrained in the gas, after the flue gas leaves a furnace mouth, the flue gas is cooled by a vaporization cooling flue or a water cooling flue, and then the concentration of the dust is reduced through a flue gas dust removal system, so that the national emission standard is reached. At present, a large number of converter primary flue gas dust removal systems of iron and steel smelting enterprises all adopt dry dust removal.
The basic principle of the dry dedusting of the converter is that the flue gas enters an evaporative cooler through a vaporization cooling flue, and the evaporative cooler directly sprays cooling water into airflow to be cooled, so that the water spraying amount ensures that the hot coal gas of the converter is evaporated. In the process, the cooling water is atomized by the double-flow spray gun device, the atomization process of the cooling water is realized by sprayed steam or nitrogen, and the atomized water sucks heat from the coal gas and cools the coal gas, so that the dust and coarse particle dust are collected.
In the flue gas cooling and dedusting process, the steam is atomized gas, and can be automatically produced in the converter production process, and the energy consumption can be reduced and the cost can be saved by adopting the steam. However, in the practical application process, when the steam pressure fluctuates and the steam air supply system fails, the cooling effect of the evaporative cooler is directly poor, the problems of overhigh temperature of flowing smoke, interruption of blowing of an oxygen gun, poor atomization effect of cooling water in the cooler, overhigh water content of dust and the like occur, so that production accidents such as frequent gun lifting of the oxygen gun, blockage of an ash conveying system and the like are caused, and the stable operation of the dry dust removal system is seriously influenced.
Disclosure of Invention
The utility model aims to provide an atomization gas device of a dry dedusting evaporative cooler, which is added with a nitrogen pipeline, when a vapor pressure fluctuation or a vapor supply system failure occurs in an atomization vapor source of the evaporative cooler of a dry dedusting system, a converter can continue to blow oxygen in a gun, and the dry dedusting system can continue to stably operate.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
the utility model provides a dry dedusting evaporative cooler atomizing gas device, includes evaporative cooler, double-flow spray gun device, steam pipeline, atomizing gas pipeline, cooler water pipeline, and double-flow spray gun device sets up in the evaporative cooler, and steam pipeline and cooling water pipeline all are equipped with pressure transmitter, trip valve, governing valve, are provided with pressure transmitter and flowmeter on the atomizing gas pipeline, and evaporative cooler entry and export are provided with temperature sensor respectively;
still include nitrogen gas pipeline and control unit, the atomizing gas pipeline is connected with steam line and nitrogen gas pipeline respectively, be provided with pressure transmitter on the nitrogen gas pipeline, the trip valve, the governing valve, steam line, the nitrogen gas pipeline, the trip valve on the cooling water pipeline is connected with control unit's digital output through the port respectively, steam line, the nitrogen gas pipeline, the governing valve on the cooling water pipeline is connected with control unit's analog output respectively, steam line, the nitrogen gas pipeline, the cooling water pipeline, the pressure transmitter on the atomizing gas pipeline, the flowmeter on the atomizing gas pipeline, evaporative cooler entry and export's temperature sensor are connected with control unit's analog input through the port respectively.
The control unit comprises a power supply module, a PLC controller, an analog input module, an analog output module and an upper computer, wherein the PLC controller, the analog input module and the analog output module are connected through ports, the PLC controller is connected with the upper computer through communication ports, the input end of the power supply module is connected through an alternating current power supply, and the output end of the power supply module is used for providing a working power supply; the digital output end of the PLC is connected with the intermediate relay group, and the analog input module is connected with the output ends of the signal isolator group and the temperature transmitter group through ports.
The intermediate relay group comprises a plurality of intermediate relays, and the intermediate relay group is connected with the cut-off valves on the steam pipeline, the nitrogen pipeline and the cooling water pipeline.
The signal isolator group comprises a plurality of signal isolators for 4-20mA data signals which are input and output one by one, and the temperature transmitter group comprises a plurality of temperature transmitters for converting the temperature signals into 4-20mA data signals.
The input of signal isolator group is connected with steam pressure transmitter, nitrogen pressure transmitter, cooling water pressure transmitter, atomizing air flow meter respectively, and the input of temperature transmitter group is connected with the temperature sensor of evaporative cooler entry and export.
The pressure transmitter and the flowmeter output 4-20mA data signals.
The PLC is connected with normally open contacts of the on-position limit switch and the off-position limit switch of each cut-off valve through a digital quantity input port respectively, and is used for receiving position signals of the steam cut-off valve, the nitrogen cut-off valve and the cooling water cut-off valve.
The double-flow spray gun device comprises a spray gun and a spray head, wherein the spray gun is provided with the spray head, a water outlet is arranged in the middle of the spray head, and the water outlet is connected with a cooling water pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. a nitrogen pipeline is newly added, and when a steam pressure fluctuation or a steam supply system failure occurs in a steam source, the nitrogen supply system is switched;
2. the on-site valves are connected into the control unit through ports, production operators realize single-start and single-stop operation of the cut-off valve and the regulating valve through the upper computer according to actual production conditions, the problems that production is affected due to overlong manual valve closing and nitrogen pouring time are solved, and the running state of equipment can be checked at any time through the upper computer;
3. the transformation cost is low, the structure is simple, and the realization is easy.
Drawings
Fig. 1 is a schematic view of the device structure.
Fig. 2 is a front view of the spray head.
Fig. 3 is a top view of the spray head.
Fig. 4 is a schematic diagram of the principle of the PLC controller.
In the figure: 1-a steam pressure transmitter 2-a steam cut-off valve 3-a steam regulating valve 4-a nitrogen pressure transmitter 5-, a nitrogen cut-off valve 6-a nitrogen regulating valve 7-a cooling water pressure transmitter 8-a cooling water cut-off valve 9-a cooling water regulating valve 10-an atomization air pressure transmitter 11-an atomization air flow sensor 12-a flue gas pipeline 13-an evaporation cooler 14-a double-flow spray gun device 15-an atomization air pipeline 16-a cooling water pipeline 17-a spray head 18-a steam/nitrogen outlet 19-a water outlet 20-an evaporation cooler inlet temperature sensor 21-an evaporation cooler outlet temperature sensor.
Detailed Description
The present utility model will be described in detail below with reference to the drawings of the specification, but it should be noted that the practice of the present utility model is not limited to the following embodiments.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples. The methods used in the examples described below are conventional methods unless otherwise specified.
[ example 1 ]
Referring to fig. 1-4, in this embodiment, an atomization gas device of a dry dedusting evaporative cooler includes an inlet temperature sensor 20 of the evaporative cooler, an outlet temperature sensor 21 of the evaporative cooler, an evaporative cooler 13, a dual-flow spray gun device 14, a flue gas pipeline 12, an atomization gas pipeline 15, a cooling water pipeline 16, a steam pipeline, a nitrogen pipeline, a steam pressure transmitter 1, a steam shut-off valve 2, a steam regulating valve 3, a nitrogen pressure transmitter 4, a nitrogen shut-off valve 5, a nitrogen regulating valve 6, a cooling water pressure transmitter 7, a cooling water shut-off valve 8, a cooling water regulating valve 9, an atomization air pressure transmitter 10, an atomization air flow sensor 11, a control unit, an intermediate relay set, a signal isolator set, a temperature transmitter set, and an upper computer, wherein the newly added devices include a nitrogen pipeline, a nitrogen pressure transmitter 4, a nitrogen shut-off valve 5, a nitrogen regulating valve 6, and the balance of old devices.
The double-flow spray gun device 14 for cooling the flue gas is arranged in the evaporative cooler 13, the flue gas enters the evaporative cooler 13 through the inlet flue 12, dust captured by water mist is recovered through a dust collecting system at the lower part of the evaporative cooler 13, a steam pipeline and a nitrogen pipeline are both connected with the atomizing gas pipeline 15, the double-flow spray gun device 14 comprises a spray gun and a spray head 17, the spray gun is provided with the spray head 17, a water outlet 19 is arranged in the middle of the spray head 17, steam/nitrogen outlets 18 are uniformly distributed around the water outlet 19, the steam/nitrogen outlets 18 are connected with the atomizing gas pipeline 15, and the water outlet 19 is connected with the cooling water pipeline 16; the steam pressure transmitter 1, the steam shut-off valve 2 and the steam regulating valve 3 are arranged on a steam pipeline; the nitrogen pressure transmitter 4, the nitrogen shut-off valve 5 and the nitrogen regulating valve 6 are arranged on a nitrogen pipeline; the atomization air pressure transmitter 10 and the atomization air flow sensor 11 are arranged on an atomization air pipeline 15; the cooling water pressure transmitter 7, the cooling water cut-off valve 8 and the cooling water regulating valve 9 are arranged on the cooling water pipeline 16, the evaporative cooler inlet temperature sensor 20 is arranged at the inlet of the evaporative cooler, and the evaporative cooler outlet temperature sensor 21 is arranged at the outlet of the evaporative cooler.
[ example 2 ]
In the embodiment, the atomizing gas device of the dry dedusting evaporative cooler is the same as that of the embodiment 1, and on the basis of the atomizing gas device, a control unit adopts a PLC (programmable logic controller), and comprises a power supply module, the PLC, an analog input module, an analog output module and an Ethernet switch, wherein the PLC, the analog input module and the analog output module are connected through ports; the PLC controller, the oxygen lance PLC system and the upper computer are in exchange connection with the Ethernet through the communication port, so that data exchange between the PLC controller and the oxygen lance PLC system is realized, the PLC controller receives and processes instruction information of the upper computer, and the data information is displayed on the upper computer.
The analog input module is connected with the output ports of the signal isolator group and the temperature transmitter group through ports, each signal isolator is a signal isolator of 4-20mA data signals of one input and one output, each temperature transmitter is used for converting the temperature signals into 4-20mA data signals, and the steam pressure transmitter 1, the nitrogen pressure transmitter 4, the cooling water pressure transmitter 7, the atomization air pressure transmitter 10 and the atomization air flow sensor 11 are all used for outputting the 4-20mA data signals. The PLC receives data information of the steam pressure, the nitrogen pressure, the cooling water pressure, the atomization air flow, the evaporative cooler inlet temperature sensor 20 and the evaporative cooler outlet temperature sensor 21 and instruction information of an upper computer, which are acquired through the analog input module, so that the steam shut-off valve 2, the steam regulating valve 3, the nitrogen shut-off valve 5, the nitrogen regulating valve 6, the cooling water shut-off valve 8 and the cooling water regulating valve 9 act.
The input end of the power supply module is connected with the alternating current power supply AC220V, and the output end of the power supply module is used for providing the working power supply DC24V. The digital quantity output port of the PLC is connected with an atomization gas abnormality alarm system, an atomization gas normal alarm releasing system, a steam cut-off valve 2, a nitrogen cut-off valve 5 and a cooling water cut-off valve 8 through an intermediate relay group, the atomization gas abnormality alarm system comprises an audible and visual alarm, and the PLC enables the audible and visual alarm, the steam cut-off valve 2, the nitrogen cut-off valve 5 and the cooling water cut-off valve 8 to act through the intermediate relay group; the open-position limit switch of the steam shut-off valve 2, the close-position limit switch of the steam shut-off valve 2, the open-position limit switch of the nitrogen shut-off valve 5 and the normally open contact of the close-position limit switch of the nitrogen shut-off valve 5 are transmitted to the PLC as shut-off valve position signals.
The working process comprises the following steps:
the oxygen lance PLC system is workshop utilization equipment, when receiving an oxygen lance converting start signal, a converter oxygen blowing normal signal and an oxygen lance oxygen flow normal signal transmitted by the oxygen lance PLC system, the control unit sends a command to enable a steam cut-off valve to start to operate if the inlet temperature of the evaporative cooler is greater than a set value T1, and enables a steam regulating valve and a cooling water cut-off valve to be simultaneously opened after the steam cut-off valve is opened for 2 seconds, wherein the steam regulating valve is opened to 100%; when the cooling water cut-off valve is opened for 2 seconds, the cooling water regulating valve is opened, and the control unit regulates the opening degree of the cooling water regulating valve according to the inlet temperature signal of the evaporative cooler; the steam is sprayed out of the double-flow spray gun through an atomization gas pipeline to atomize cooling water, and the pressure and flow on the atomization gas pipeline are monitored in real time; when the blowing of the oxygen lance is finished, the PLC system of the oxygen lance enables the oxygen cut-off valve to be closed, if the inlet temperature of the evaporative cooler is smaller than the set value T 1 The outlet temperature is less than the set value T 2 The control unit sends out a command to enable the cooling water cut-off valve and the regulating valve to close signals, and after the cooling water cut-off valve and the regulating valve are closed for 20 seconds, the steam cut-off valve and the regulating valve are closed to wait for entering the next production period; when the oxygen lance converting process has the faults of abnormal steam pressure, large fluctuation of atomization air flow, abnormal action of a steam cut-off valve and the like, the control unit outputs an abnormal signal of the state of the atomization air to the oxygen lance PLC system, the upper computer has alarm information, the oxygen lance PLC system enables the oxygen lance to be lifted to a waiting position, at the moment, the control unit sends out an instruction to enable the atomization air supply to be automatically switched to nitrogen air supply, the steam cut-off valve is automatically closed, the nitrogen cut-off valve is automatically opened, air is supplied to an atomization air pipeline, the control unit outputs a normal signal of the state of the atomization air to the oxygen lance PLC system, and the oxygen lance system canAnd performing secondary converting operation. After the state of the steam supply system is normal, steam supply is selected through the upper computer, the nitrogen shut-off valve is closed, the steam shut-off valve is opened, and the system returns to the steam supply state.
According to the utility model, a nitrogen pipeline is newly added, and when a steam pressure fluctuation or a steam supply system fault occurs in a steam source, the nitrogen supply system is switched; the on-site valves are connected into the control unit through ports, production operators realize single-start and single-stop operation of the cut-off valve and the regulating valve through the upper computer according to actual production conditions, the problems that production is affected due to overlong manual valve closing and nitrogen pouring time are solved, and the running state of equipment can be checked at any time through the upper computer; the transformation cost is low, the structure is simple, and the realization is easy.
Claims (8)
1. The utility model provides a dry dedusting evaporative cooler atomizing gas device, includes evaporative cooler, double-flow spray gun device, steam pipeline, atomizing gas pipeline, cooler water pipeline, and double-flow spray gun device sets up in the evaporative cooler, steam pipeline and cooling water pipeline all be equipped with pressure transmitter, trip valve, governing valve, atomizing gas pipeline on be provided with pressure transmitter and flowmeter, evaporative cooler entry and export are provided with temperature sensor respectively;
the device is characterized by further comprising a nitrogen pipeline and a control unit, wherein the atomizing gas pipeline is respectively connected with the steam pipeline and the nitrogen pipeline, a pressure transmitter, a cut-off valve and a regulating valve are arranged on the nitrogen pipeline, the cut-off valves on the steam pipeline, the nitrogen pipeline and the cooling water pipeline are respectively connected with the digital output end of the control unit through ports, the regulating valves on the steam pipeline, the nitrogen pipeline and the cooling water pipeline are respectively connected with the analog output end of the control unit, and the pressure transmitter on the steam pipeline, the nitrogen pipeline, the cooling water pipeline and the atomizing gas pipeline, and the flow meters on the atomizing gas pipeline, the temperature sensors of the inlet and the outlet of the evaporative cooler are respectively connected with the analog input end of the control unit through ports.
2. The atomizing gas device of the dry dedusting evaporative cooler according to claim 1, wherein the control unit comprises a power supply module, a PLC controller, an analog input module, an analog output module and an upper computer, wherein the PLC controller, the analog input module and the analog output module are connected through ports, the PLC controller is connected with the upper computer through communication ports, the input end of the power supply module is connected through an alternating current power supply, and the output end of the power supply module is used for providing working power supply; the digital output end of the PLC is connected with the intermediate relay group, and the analog input module is connected with the output ends of the signal isolator group and the temperature transmitter group through ports.
3. The atomizing gas device of the dry dedusting evaporative cooler according to claim 2, wherein the intermediate relay group comprises a plurality of intermediate relays, and the intermediate relay group is connected with cut-off valves on a steam pipeline, a nitrogen pipeline and a cooling water pipeline.
4. The atomizing gas device of the dry dedusting evaporative cooler according to claim 2, wherein the signal isolator group comprises a plurality of signal isolators for one-in-one-out 4-20mA data signals, and the temperature transmitter group comprises a plurality of temperature transmitters for converting the temperature signals into the 4-20mA data signals.
5. The dry dedusting evaporative cooler atomization gas device according to claim 2, wherein the input end of the signal isolator group is connected with a steam pressure transmitter, a nitrogen pressure transmitter, a cooling water pressure transmitter, an atomization air pressure transmitter and an atomization air flow meter respectively, and the input end of the temperature transmitter group is connected with temperature sensors at the inlet and the outlet of the evaporative cooler.
6. The atomizing gas device of the dry dedusting evaporative cooler according to claim 1, wherein the pressure transmitter and the flowmeter output 4-20mA data signals.
7. The atomizing gas device of the dry dedusting evaporative cooler according to claim 2, wherein the PLC is connected with normally open contacts of an on-position limit switch and an off-position limit switch of each cut-off valve through a digital quantity input port respectively, and is used for receiving position signals of a steam cut-off valve, a nitrogen cut-off valve and a cooling water cut-off valve.
8. The atomizing gas device of the dry dedusting evaporative cooler according to claim 1, wherein the double-flow spray gun device comprises a spray gun and a spray head, the spray gun is provided with the spray head, a water outlet is arranged in the middle of the spray head, and the water outlet is connected with a cooling water pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320330114.7U CN219546997U (en) | 2023-02-28 | 2023-02-28 | Atomizing gas device of dry dedusting evaporative cooler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320330114.7U CN219546997U (en) | 2023-02-28 | 2023-02-28 | Atomizing gas device of dry dedusting evaporative cooler |
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