阅读说明：本技术 冷轧库区钢卷防结露装置及其使用方法 (Anti-condensation device for steel coil in cold rolling storage area and use method thereof ) 是由 严江生 王海东 于 2020-05-27 设计创作，主要内容包括：本发明涉及将气体或蒸气干燥的领域,具体为一种冷轧库区钢卷防结露装置及其使用方法。一种冷轧库区钢卷防结露装置,包括库区(1),库区(1)为设于地面上矩形区域,其特征是：还包括隔离屏(2)、鼓风总管(31)、鼓风支管(32)、通风沟(41)、通风孔(42)、盖板(43)、回风风管(5)、鼓风装置(6)、标准钢卷(7)、露点仪(8)和控制器(9),在一扇隔离屏(2)的底部固定一条鼓风总管(31)；在每条鼓风支管(32)的一端各挖设一条通风沟(41)；库区(1)外设有鼓风装置(6)。一种冷轧库区钢卷防结露装置的使用方法,其特征是：按如下步骤依次实施：测温；判别。本发明有效隔离,防止结露。(The invention relates to the field of drying gas or steam, in particular to a cold-rolling storage area steel coil anti-condensation device and a using method thereof. The utility model provides a cold rolling storehouse district coil of strip antisweat device, includes storehouse district (1), and storehouse district (1) is for locating subaerial rectangle region, characterized by: the device is characterized by also comprising an isolation screen (2), a main blowing pipe (31), blowing branch pipes (32), a ventilation channel (41), a ventilation hole (42), a cover plate (43), a return air pipe (5), a blowing device (6), a standard steel coil (7), a dew point instrument (8) and a controller (9), wherein the main blowing pipe (31) is fixed at the bottom of one isolation screen (2); one end of each blast branch pipe (32) is respectively dug with a ventilation ditch (41); and a blast device (6) is arranged outside the reservoir area (1). A use method of a cold rolling storage area steel coil anti-condensation device is characterized by comprising the following steps: the method is implemented in sequence according to the following steps: measuring the temperature; and (6) judging. The invention has the advantages of effective isolation and condensation prevention.)

1. The utility model provides a cold rolling storehouse district coil of strip antisweat device, includes storehouse district (1), and storehouse district (1) is for locating subaerial rectangle region, characterized by: also comprises an isolation screen (2), a main blowing pipe (31), a branch blowing pipe (32), a ventilation ditch (41), a ventilation hole (42), a cover plate (43), a return air pipe (5), a blowing device (6), a standard steel coil (7), a temperature sensor (71), a dew point instrument (8) and a controller (9),

the isolation screens (2) are arranged on a boundary line of the reservoir area (1), the isolation screens (2) comprise four isolation screens, each isolation screen (2) is vertically fixed on one boundary line of the reservoir area (1), at least two isolation screens (2) are respectively provided with a reservoir door (21), the bottom of one isolation screen (2) is fixed with a main blower pipe (31), the main blower pipe (31) is respectively connected with at least three main blower pipes (32), the main blower pipes (32) and the main blower pipes (31) are mutually vertical, all the main blower pipes (32) are mutually parallel, and the distance between every two adjacent main blower pipes (32) is equal;

one end of each blast branch pipe (32) on the ground in the reservoir area (1) is respectively dug to form a ventilation ditch (41), a steel coil (10) is placed on the ground in the reservoir area (1) between every two adjacent ventilation ditches (41), one end of each blast branch pipe (32) is respectively led into the corresponding ventilation ditch (41), the central axis of each ventilation ditch (41) is mutually overlapped with the central axis of the corresponding blast branch pipe (32), at least three ventilation holes (42) are sequentially arranged on two opposite top edges of each ventilation ditch (41), and each ventilation ditch (41) is respectively covered by a cover plate (43);

the top of each isolating screen (2) is respectively provided with a return air duct (5), the outer side wall of each return air duct (5) is sequentially provided with at least three return air inlets (51), and the return air inlets (51) are provided with shutters (52);

a blowing device (6) is arranged outside the reservoir area (1), a blowing port of the blowing device (6) is connected with an air inlet of a blowing main pipe (31), and all return air pipes (5) are sequentially connected and then connected to an air suction port of the blowing device (6);

two standard steel coils (7) and two dew point hygrometers (8) are arranged outside the reservoir area (1), a temperature sensor (71) is arranged on each standard steel coil (7), two dew point hygrometers (8) are also arranged in the reservoir area (1), at least two steel coils (10) are selected in the reservoir area (1), one temperature sensor (71) is arranged on each selected steel coil (10), and the air blowing device (6), the temperature sensors (71) and the dew point hygrometers (8) are all connected with the controller (9) through signal lines.

2. The anti-dewing device for the steel coils in the cold-rolled storage area as claimed in claim 1, which is characterized in that: the isolation screen (2) comprises upright posts (21), frames (22) and a mask (23), the upright posts (21) are sequentially and vertically fixed on the ground on the inner side of the warehouse wall (11), two adjacent upright posts (21) are connected through the frames (22), and each frame (22) is covered with one mask (23);

the vent hole (42) is rectangular, and the length of the vent hole (42) is 3-5 times of the height;

the controller (9) is a programmable controller.

3. The use method of the anti-condensation device for the steel coils in the cold-rolling storage area as claimed in claim 1 or 2, is characterized in that: the method is implemented in sequence according to the following steps:

temperature measurement: the dew point temperature of the atmosphere outside the reservoir area (1) measured by each dew point instrument (8) outside the reservoir area (1) is taken as an average value t₁The average value T of the temperature of the standard steel coil (7) measured by the temperature sensor (71) on the standard steel coil (7) outside the reservoir area (1) is₁The dew point temperature of the atmosphere in the reservoir area (1) measured by a dew point instrument (8) in the reservoir area (1) is taken as an average value t₂The average value T of the temperature of the steel coil (10) measured by the temperature sensor (71) on the steel coil (10) in the reservoir area (1)₂And let Δ T = T₁-t₁，Δt=T₂-t₂The alarm temperature is A;

and (3) discrimination: when both delta T and delta T are greater than the A value by more than 3 ℃, no condensation alarm is performed, and the controller (9) controls the blowing device (6) to stop;

when any one of the delta T and the delta T is larger than the value A and the difference between the delta T and the value A is in the range of [2 ℃ and 3 ℃), the controller (9) controls the air blowing device (6) to operate at 50% -75% of full load power, a first-level condensation alarm is sent out, dry air blown out by the air blowing device (6) is blown to the strip steel (10) from the air vent (42) after sequentially passing through the air blowing main pipe (31), the air blowing branch pipe (32) and the ventilation ditch (41), the strip steel (10) is prevented from condensation, and then flows into the air return pipe (5) through the air return port (51) and is recovered by the air blowing device (6);

when both delta T and delta T are smaller than the value A, or any one of the delta T and the delta T is larger than the value A and the difference between the delta T and the value A is smaller than 2 ℃, the controller (9) controls the air blowing device (6) to operate at full load power, and simultaneously gives out a secondary dew formation alarm to the outside, dry air blown out by the air blowing device (6) is blown to the strip steel (10) from the air vent (42) after sequentially passing through the air blowing main pipe (31), the air blowing branch pipe (32) and the ventilation channel (41), so that the dew formation of the strip steel (10) is prevented, and then the dry air flows into the air return pipe (5) through the air return port (51) and is recovered by.

Technical Field

The invention relates to the field of drying gas or steam, in particular to a cold-rolling storage area steel coil anti-condensation device and a using method thereof.

Background

When the cold-rolled steel coil is stored in a storage area, if the air humidity is large and the temperature difference between day and night is large, the condensation of the steel coil is easy to cause, and the surface of the steel coil is rusted, particularly the surface of a cold-rolled intermediate product and a hot-galvanized intermediate product subjected to annealing treatment is rusted most easily, so that the steel coil in the storage area is damaged in batches, and the steel coil cannot continuously enter a next unit for production.

Disclosure of Invention

The invention discloses a device for preventing steel coils from dewing in a cold rolling storage area and a using method thereof, and aims to overcome the defects of the prior art and provide drying equipment capable of effectively isolating and preventing dewing.

The invention achieves the purpose by the following technical scheme:

the utility model provides a cold rolling reservoir area coil of strip antisweat device, includes the reservoir area, and the reservoir area is for locating subaerial rectangle region, characterized by: also comprises an isolation screen, a main blowing pipe, a branch blowing pipe, a ventilating channel, a ventilating hole, a cover plate, a return air pipe, a blowing device, a standard steel coil, a temperature sensor, a dew point instrument and a controller,

the isolation screens are arranged on a boundary line of the reservoir area, the isolation screens are four in number, each isolation screen is vertically fixed on one boundary line of the reservoir area, at least two isolation screens are respectively provided with a reservoir door, the bottom of one isolation screen is fixedly provided with a main blower pipe, the main blower pipe is respectively connected with at least three main blower pipes, the main blower pipes are mutually vertical, all the main blower pipes are mutually parallel, and the distance between every two adjacent main blower pipes is equal;

one end of each blast branch pipe is dug on the ground in the reservoir area, a steel coil is placed on the ground in the reservoir area between every two adjacent blast branch pipes, one end of each blast branch pipe is respectively introduced into the corresponding blast branch pipe, the central axis of each blast branch pipe is superposed with the central axis of the corresponding blast branch pipe, at least three vent holes are sequentially arranged on two opposite top edges of each blast branch pipe, and each blast branch pipe is covered with a cover plate;

the top of each isolation screen is respectively provided with a return air pipe, the outer side wall of each return air pipe is sequentially provided with at least three return air inlets, and each return air inlet is provided with a shutter;

the warehouse area is externally provided with an air blowing device, a blast port of the air blowing device is connected with an air inlet of an air blowing main pipe, and all return air pipes are connected in sequence and then connected to an air suction port of the air blowing device;

two standard steel coils and two dew point meters are arranged outside the storage area, a temperature sensor is arranged on each standard steel coil, two dew point meters are also arranged in the storage area, at least two steel coils are selected in the storage area, a temperature sensor is arranged on each selected steel coil, and the air blowing device, the temperature sensors and the dew point meters are all connected with the controller through signal lines.

The cold rolling storehouse area coil of strip anti-condensation device, characterized by: the isolation screen comprises stand columns, frames and a mask, wherein the stand columns are sequentially and vertically fixed on the ground on the inner side of the warehouse wall, two adjacent stand columns are connected through the frames, and each frame is covered with one mask;

the vent holes are rectangular, and the length of each vent hole is 3-5 times of the height of each vent hole;

the controller is a programmable controller.

The use method of the anti-condensation device for the steel coil in the cold rolling storage area is characterized by comprising the following steps: the method is implemented in sequence according to the following steps:

temperature measurement: the dew point temperature of the atmosphere outside the reservoir area measured by each dew point meter outside the reservoir area is taken as the average value t₁The average value T of the temperature of the standard steel coil measured by the temperature sensor on the standard steel coil outside the reservoir area₁Dew point in reservoir areaObtaining the average value t of the atmospheric dew point temperature in the reservoir area₂The average value T of the temperature of the steel coil measured by the temperature sensor on the steel coil in the reservoir area₂And let Δ T = T₁-t₁，Δt=T₂-t₂The alarm temperature is A;

and (3) discrimination: when both delta T and delta T are greater than the A value by more than 3 ℃, alarming without condensation, and controlling the blowing device to stop by the controller;

when any one of the delta T and the delta T is larger than the value A and the difference between the delta T and the value A is in the range of [2 ℃ and 3 ℃), the controller controls the air blowing device to operate at 50-75% of full load power, and simultaneously sends out a first-level condensation alarm, dry air blown out by the air blowing device is blown to the strip steel from the vent holes after sequentially passing through the air blowing main pipe, the air blowing branch pipe and the vent channel to prevent the strip steel from condensation, and then flows into the air return pipe (recovered by the air blowing device) through the air return port;

when both delta T and delta T are smaller than the value A, or any one of the delta T and the delta T is larger than the value A and the difference between the delta T and the value A is smaller than 2 ℃, the controller (9) controls the air blowing device to operate at full load power, and simultaneously gives out a secondary dewing alarm to the outside, dry air blown out by the air blowing device is blown to the strip steel from the air vents sequentially through the air blowing main pipe, the air blowing branch pipe and the air ventilation channel to prevent the strip steel from dewing, and then flows into the air return pipe through the air return port to be recycled by the air blowing device.

The invention has the following technical characteristics:

1. the anti-dewing storage area is effectively separated from the periphery by adopting the closed isolation screen to form an independent environment, and the steel coil lifting and anti-dewing effects are comprehensively considered by the size and the height of the isolation screen.

2. The reasonable variable cross-section air supply system is adopted, the air supply amount is effectively and reasonably distributed, and the flat ventilation openings with low cost are adopted for supplying dry air at the positions of two sides of the steel coil, which are aligned to the steel coil.

3. Set up the return air tuber pipe all around on the isolation screen, go up and establish a plurality of return air inlets, form reasonable return air system, effectively retrieve dry air, form circulation system, effectual reduction energy consumption.

4. Set up reasonable anti-condensation system thermometer and dew point hygrometer, specifically as follows:

outside the reservoir area: two standard steel coils are provided, and two temperature sensors for measuring the temperature of the standard steel coils are provided; two dew point meters for detecting atmosphere are provided; in the reservoir area: and detecting two dew point meters in the reservoir area.

5. And reasonable dewing judgment basis and system control of the dewing prevention system are set, and a working instruction is sent to the air blowing device in time to convey dry air to the reservoir area, so that dewing of the steel coil is avoided.

The invention has the following beneficial effects:

1. the closed isolation screen is adopted to form effective isolation from the surrounding environment.

2. And a variable cross-section air supply system is adopted, so that the air supply quantity of each steel coil is effectively and reasonably distributed.

3. Set up the return air pipe all around on the isolation screen, set up a plurality of return air inlets on, effectively retrieve dry air, form circulation system, effectual reduction energy consumption.

4. Reasonable condensation judgment alarming and energy-saving control measures are adopted, and automatic control of the condensation prevention system is achieved.

5. And the PLC is adopted for control, so that the automation degree is high.

6. Can effectively prevent the steel coil in the cold rolling storage area from dewing, and has good use effect proved by engineering practice.

Drawings

Figure 1 is a schematic top view of the present invention,

figure 2 is a schematic front view of a ventilation channel according to the invention,

figure 3 is a schematic cross-sectional view of a ventilation channel of the present invention,

figure 4 is a schematic structural diagram of a return air duct in the invention,

figure 5 is a schematic view of the connection of the air blowing device, the temperature sensor, the dew point meter and the controller (9) in the present invention,

fig. 6 is a schematic view of the structure of the separation screen in the present invention.

Detailed Description

The invention is further illustrated by the following specific examples.