A full-section online monitoring device and monitoring method for demister blockage

Abstract

The present invention discloses a full-section online monitoring device for demister blockage, including an absorption tower, multiple demister modules, a demister support beam, multiple piezoresistive sensors, and a control system. Multiple demister modules are arranged on the demister support beam. The demister modules include two groups of corrugated blades, an upper side plate, and two groups of lower side plates. One end of the corrugated blade is connected to one side of the upper side plate, and the other end of the corrugated blade is connected to the lower side plate. A support rod is arranged below the lower side plate. Both ends of the support rod are connected to the upper surface of the demister support beam, and the lower part of the lower side plate is connected to the side of the demister support beam. The piezoresistive sensor is arranged at the contact point between the demister support beam and the lower side plate. Multiple piezoresistive sensors are equidistantly spaced and distributed in a full-section rectangular dot matrix. The present invention also discloses a monitoring method. The present invention directly contacts the piezoresistive sensor with the demister, monitors the stress conditions of each demister, and determines the demister blockage condition, so as to achieve on-demand flushing, simple measuring elements, and high cost performance.

Description

Technical Field

[0001] The invention relates to a full-section online monitoring device and a monitoring method for demister blockage, belonging to the technical field of electric power. Background Art

[0002] At present, the main reason for the collapse of boiler demisters in thermal power plants is the blockage of demister scaling and the large differential pressure before and after the demister, which causes the demister to be flushed open by flue gas and causes accidents. However, there is no effective monitoring method for the differential pressure of demisters. The conventional differential pressure method for measuring the differential pressure of demisters cannot accurately characterize the blockage of each demister module, and the sensitivity and representativeness of the differential pressure method for measuring the differential pressure of demisters are poor. Summary of the invention

[0003] The purpose of the present invention is to provide a full-section online monitoring device for demister blockage, and also to provide a monitoring method for the full-section online monitoring device for demister blockage. When the weight of the demister increases due to scaling, the force exerted by the scaled demister pressure on the piezoresistive sensor increases accordingly. The piezoresistive sensor outputs a signal to a transmission unit outside the tower through a signal cable. The transmission unit processes the piezoresistive sensor signal and sends an analog signal to the monitoring screen of the monitoring unit. The weight increase of each demister module is displayed in a matrix on the monitoring unit screen, thereby sensing the blockage of the demister.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a full-section online monitoring device for demister blockage, comprising an absorption tower, a plurality of demister modules, a plurality of demister support beams, a plurality of piezoresistive sensors, and a control system, wherein the plurality of demister modules are arranged on the demister support beams, and the two ends of the demister support beams are connected to the inner wall of the absorption tower, the demister module comprises two groups of corrugated blades, an upper side plate and two groups of lower side plates, one end of the corrugated blade is connected to one side of the upper side plate, and the other end of the corrugated blade is connected to the lower side plate, a support rod is arranged below the lower side plate, and the two ends of the support rod pass through and are connected to the lower side plate. At the lower part of the plate, both ends of the support rod are connected to the upper surface of the demister support beam, and the lower part of the lower plate is connected to the side of the demister support beam. The piezoresistive sensor is arranged at the contact between the demister support beam and the lower plate. Multiple piezoresistive sensors are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable is arranged on the piezoresistive sensor, one end of the signal cable is connected to the piezoresistive sensor, and the other end of the signal cable is connected to the control system; the piezoresistive sensor outputs a signal to the control system outside the absorption tower through the signal cable, and the weight increase of each demister module is displayed in a rectangular dot matrix on the control system, thereby sensing the blockage of the demister.

[0005] In the aforementioned full-section online monitoring device for demister blockage, the multiple demister support beams are arranged horizontally and in parallel.

[0006] In the aforementioned full-section online monitoring device for demister blockage, the piezoresistive sensor is arranged at the side connection between the lower plate and the demister support beam.

[0007] In the aforementioned full-section online monitoring device for demister blockage, the piezoresistive sensor is arranged at the connection between the two ends of the support rod and the upper surface of the demister support beam.

[0008] The aforementioned full-section online monitoring device for defogger blockage, the control system includes a transmitter unit and a monitoring unit, the transmitter unit is connected to the piezoresistive sensor via a signal cable, and the transmitter unit is also electrically connected to the monitoring unit via the signal cable; the transmitter unit processes the signal emitted by the piezoresistive sensor, and the monitoring unit expresses the information of the signal, and displays the weight increase of each defogger module in a rectangular dot matrix, thereby sensing the blockage of the defogger.

[0009] In the aforementioned full-section online monitoring device for demister blockage, the monitoring unit includes a display unit; the display unit clearly displays the information of the signal expressed by the monitoring unit.

[0010] In the aforementioned full-section online monitoring device for demister blockage, the shell of the piezoresistive sensor is made of anti-corrosion material; the piezoresistive sensor is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor, thereby increasing the service life of the piezoresistive sensor.

[0011] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0012] S1, the signal of the piezoresistive sensor is transmitted to the transmission unit through the signal cable;

[0013] S2, the transmitter unit processes the signal of the piezoresistive sensor;

[0014] S3, transmitting the signal processed by the transmitter unit to the monitoring unit through the signal cable;

[0015] S4, the monitoring unit controls the display unit to display the signal processed by the transmission unit on the display unit;

[0016] S5, the weight change of each defogger module is expressed by a full-section dot matrix graphic displayed by the display unit to monitor the blockage of the defogger online.

[0017] In the aforementioned monitoring method of a full-section online monitoring device for defogger blockage, the S5 step displays red, yellow and green colors through the display unit to express the weight change of each defogger module, the red color indicates that the defogger is blocked and needs to be flushed, the yellow color indicates that the piezoresistive sensor has failed and needs to be repaired, and the green color indicates that the defogger is operating normally; the three colors express three different meanings, which makes it convenient for staff to quickly and accurately detect blockage problems based on the colors and achieve on-demand flushing.

[0018] The aforementioned monitoring method of a full-section online monitoring device for defogger blockage, the S5 step, displays data through a display unit, and the data is set with an upper threshold and a lower threshold. If the displayed data is higher than the upper threshold, it indicates that the defogger is blocked and needs to be flushed. If the displayed data is between the upper threshold and the lower threshold, it indicates that the defogger is operating normally. If the displayed data is lower than the lower threshold, it indicates that the piezoresistive sensor has failed and needs maintenance. Setting the upper threshold and the lower threshold facilitates the staff to quickly and accurately discover the blockage problem based on the displayed data, thereby achieving on-demand flushing.

[0019] Compared with the prior art, the present invention includes an absorption tower, a plurality of demister modules, a plurality of demister support beams, a plurality of piezoresistive sensors, and a control system. The plurality of demister modules are arranged on the demister support beams, and the two ends of the demister support beams are connected to the inner wall of the absorption tower. The demister modules include two groups of lower side plates, two groups of corrugated blades and an upper side plate. The two groups of lower side plates are connected to the upper side plates through the corrugated blades. Support rods are arranged below the two groups of lower side plates. The two ends of the support rods are connected to the lower part of the lower side plates, and the two ends of the support rods are connected to the upper surface of the demister support beams. The lower part of the lower side plates is tightly attached to the side of the demister support beams. The piezoresistive sensors are tightly attached to the lower part of the demister support beams. It is installed on the side of the defogger support beam, and multiple piezoresistive sensors are equidistantly distributed in a full-section rectangular dot matrix. A signal cable is provided on the piezoresistive sensor, one end of the signal cable is connected to the piezoresistive sensor, and the other end of the signal cable is connected to a control system. The present invention also provides a monitoring method for a full-section online monitoring device for defogger blockage. The piezoresistive sensor is in direct contact with the defogger, and directly measures the stress condition of the defogger body on the beam. The stress condition of each piece of defogger is monitored in all directions in a full-section rectangular dot matrix arrangement. The defogger flushing logic can be improved according to the stress mode of each layer of the defogger to achieve on-demand flushing. The measuring element is simple and the cost performance is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 3It is a schematic diagram of the structure of the full cross-section rectangular lattice arrangement of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the electrical connection of the full-section piezoresistive sensor of the present invention;

[0024] Figure 5 is a flow chart of a monitoring method of the present invention;

[0025] Figure 6 It is a flow chart of another monitoring method of the present invention.

[0026] Figure markings: 1-absorption tower, 2-demister module, 3-demister support beam, 4-piezoresistive sensor, 5-control system, 6-corrugated blade, 7-upper side plate, 8-lower side plate, 9-support rod, 10-signal cable, 11-transmitter unit, 12-monitoring unit, 13-display unit.

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0028] Embodiment 1 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and the two ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister module 2 comprises two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 through the corrugated blades 6, support rods 9 are arranged below the two groups of lower side plates 8, the two ends of the support rods 9 are connected to the lower part of the lower side plates 8, and the two ends of the support rods 9 are connected to the demister The side of the defogger support beam 3 is connected, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 outside the absorption tower 1 through the signal cable 10, and the weight increase of each defogger module 2 is displayed in a rectangular dot matrix on the control system 5, thereby sensing the blockage of the defogger module 2.

[0029] Embodiment 2 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beam 3, and the two ends of the demister support beam 3 are connected to the inner wall of the absorption tower 1, and the demister module 2 comprises two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, wherein the two groups of lower side plates 8 are connected to the upper side plates 7 through the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the two ends of the support rods 9 are connected to the lower part of the lower side plates 8, and the two ends of the support rods 9 are connected to the side surfaces of the demister support beam 3. Then, the lower part of the lower plate 8 is in close contact with the side of the demister support beam 3, and the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the demister support beam 3. Multiple piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 outside the absorption tower 1 through the signal cable 10, and the weight increase of each demister module 2 is displayed in a rectangular dot matrix on the control system 5, thereby sensing the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel.

[0030] Embodiment 3 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beam 3, and the two ends of the demister support beam 3 are connected to the inner wall of the absorption tower 1, the demister module 2 comprises two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 through the corrugated blades 6, support rods 9 are arranged below the two groups of lower side plates 8, the two ends of the support rods 9 are connected to the lower part of the lower side plates 8, the two ends of the support rods 9 are connected to the side of the demister support beam 3, and the lower part of the lower side plate 8 is connected to the demister support beam 3 is tightly attached to the side, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the demister support beam 3, and multiple piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 outside the absorption tower 1 through the signal cable 10, and the weight increase of each demister module 2 is displayed in a rectangular dot matrix on the control system 5, so as to sense the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the demister support beam 3.

[0031] Embodiment 4 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beam 3, and both ends of the demister support beam 3 are connected to the inner wall of the absorption tower 1, the demister module 2 comprises two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plate 7 through the corrugated blades 6, support rods 9 are arranged below the two groups of lower side plates 8, both ends of the support rods 9 are connected to the lower part of the lower side plates 8, both ends of the support rods 9 are connected to the side of the demister support beam 3, and the lower part of the lower side plate 8 is in close contact with the side of the demister support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower side plate 8 and the demister support beam 3, the plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix, and a signal cable is arranged on the piezoresistive sensor 4 10, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 outside the absorption tower 1 through the signal cable 10, and the weight increase of each defogger module 2 is displayed in a rectangular dot matrix on the control system 5, so as to sense the blockage of the defogger module 2; the multiple defogger support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the defogger support beam 3; the control system 5 includes a transmitting unit 11 and a monitoring unit 12, the transmitting unit 11 is connected to the piezoresistive sensor 4 through the signal cable 10, and the transmitting unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitting unit 11 processes the signal sent by the piezoresistive sensor 4, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2.

[0032] Embodiment 5 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7, and two groups of lower side plates 8, wherein the two groups of lower side plates 8 are connected to the upper side plate 7 via the corrugated blades 6, and the two groups of lower side plates 8 are connected to the upper side plate 7 via the corrugated blades 6. A support rod 9 is provided below the lower side plate 8 of the group, and both ends of the support rod 9 are connected to the lower part of the lower side plate 8, and both ends of the support rod 9 are connected to the side of the defogger support beam 3, and the lower part of the lower side plate 8 is in close contact with the side of the defogger support beam 3. The piezoresistive sensor 4 is provided at the contact point between the lower side plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix, and a signal cable 10 is provided on the piezoresistive sensor 4, and one end of the signal cable 10 is connected to the piezoresistive sensor 4. , the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 outside the absorption tower 1 through the signal cable 10, and displays the weight increase of each demister module 2 in a rectangular dot matrix on the control system 5, thereby sensing the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the demister support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through the signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 processes the signal sent by the piezoresistive sensor 4, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each demister module 2 in a rectangular dot matrix, thereby sensing the blockage of the demister module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12

[0033] Embodiment 6 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 through the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the support rods 9 are arranged below the two groups of lower side plates 8. The two ends of the rod 9 are connected to the lower part of the lower plate 8, the two ends of the support rod 9 are connected to the side of the defogger support beam 3, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal through the signal cable 10 The control system 5 outside the absorption tower 1 displays the weight increase of each demister module 2 in a rectangular dot matrix on the control system 5, so as to sense the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the demister support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through a signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 ... The signal sent by the piezoresistive sensor 4 is processed, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12; the shell of the piezoresistive sensor 4 is made of anti-corrosion material; the piezoresistive sensor 4 is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor 4, thereby increasing the service life of the piezoresistive sensor 4.

[0034] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0035] S1, the signal of the piezoresistive sensor 4 is transmitted to the transmission unit 11 through the signal cable 10;

[0036] S2, the transmission unit 11 processes the signal of the piezoresistive sensor 4;

[0037] S3, transmitting the signal processed by the transmission unit 11 to the monitoring unit 12 through the signal cable 10;

[0038] S4, the monitoring unit 12 controls the display unit 13 to display the signal processed by the transmission unit 11 on the display unit 13;

[0039] S5 , expressing the weight change of each demister module 2 through the full-section dot matrix graphic displayed by the display unit 13 , so as to monitor the blockage condition of the demister module 2 online.

[0040] Embodiment 7 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 via the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the support rods 9 are arranged below the two groups of lower side plates 8. The two ends of the rod 9 are connected to the lower part of the lower plate 8, the two ends of the support rod 9 are connected to the side of the defogger support beam 3, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal through the signal cable 10 The control system 5 outside the absorption tower 1 displays the weight increase of each demister module 2 in a rectangular dot matrix on the control system 5, so as to sense the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the demister support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through a signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 ... The signal sent by the piezoresistive sensor 4 is processed, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12; the shell of the piezoresistive sensor 4 is made of anti-corrosion material; the piezoresistive sensor 4 is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor 4, thereby increasing the service life of the piezoresistive sensor 4.

[0041] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0042] S1, the signal of the piezoresistive sensor 4 is transmitted to the transmission unit 11 through the signal cable 10;

[0043] S2, the transmission unit 11 processes the signal of the piezoresistive sensor 4;

[0044] S3, transmitting the signal processed by the transmission unit 11 to the monitoring unit 12 through the signal cable 10;

[0045] S4, the monitoring unit 12 controls the display unit 13 to display the signal processed by the transmission unit 11 on the display unit 13;

[0046] S5 , expressing the weight change of each demister module 2 through the full-section dot matrix graphic displayed by the display unit 13 , so as to monitor the blockage condition of the demister module 2 online.

[0047] In the step S5, the display unit 13 displays red, yellow and green colors to express the weight change of each defogger module 2. The red color indicates that the defogger module 2 is blocked and needs to be flushed, the yellow color indicates that the piezoresistive sensor 4 fails and needs to be repaired, and the green color indicates that the defogger module 2 is operating normally. The three colors express three different meanings, which makes it convenient for the staff to quickly and accurately find the blockage problem according to the color and flush on demand.

[0048] Embodiment 8 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 via the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the support rods 9 are arranged on the upper side plates 7. The two ends of the rod 9 are connected to the lower part of the lower plate 8, the two ends of the support rod 9 are connected to the side of the defogger support beam 3, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal through the signal cable 10 The control system 5 outside the absorption tower 1 displays the weight increase of each demister module 2 in a rectangular dot matrix on the control system 5, so as to sense the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the lower plate 8 and the demister support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through a signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 ... The signal sent by the piezoresistive sensor 4 is processed, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12; the shell of the piezoresistive sensor 4 is made of anti-corrosion material; the piezoresistive sensor 4 is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor 4, thereby increasing the service life of the piezoresistive sensor 4.

[0049] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0050] S1, the signal of the piezoresistive sensor 4 is transmitted to the transmission unit 11 through the signal cable 10;

[0051] S2, the transmission unit 11 processes the signal of the piezoresistive sensor 4;

[0052] S3, transmitting the signal processed by the transmission unit 11 to the monitoring unit 12 through the signal cable 10;

[0053] S4, the monitoring unit 12 controls the display unit 13 to display the signal processed by the transmission unit 11 on the display unit 13;

[0054] S5 , expressing the weight change of each demister module 2 through the full-section dot matrix graphic displayed by the display unit 13 , so as to monitor the blockage condition of the demister module 2 online.

[0055] In the step S5, data is displayed through the display unit 13, and the data is set with an upper threshold and a lower threshold. If the displayed data is higher than the upper threshold, it means that the defogger module 2 is blocked and needs to be flushed. If the displayed data is between the upper threshold and the lower threshold, it means that the defogger module 2 is operating normally. If the displayed data is lower than the lower threshold, it means that the piezoresistive sensor 4 has a fault and needs to be repaired. Setting the upper threshold and the lower threshold facilitates the staff to quickly and accurately find the blockage problem according to the displayed data, so as to achieve on-demand flushing.

[0056] Embodiment 9 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 via the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the support rods The two ends of 9 are connected to the lower part of the lower plate 8, the two ends of the support rod 9 are connected to the side of the defogger support beam 3, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix, a signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the suction through the signal cable 10 The control system 5 outside the receiving tower 1 displays the weight increase of each defogger module 2 in a rectangular dot matrix on the control system 5, so as to sense the blockage of the defogger module 2; the multiple defogger support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the two ends of the support rod 9 and the upper surface of the defogger support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through a signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 through the signal cable 10. The signal sent by the piezoresistive sensor 4 is processed, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12; the shell of the piezoresistive sensor 4 is made of anti-corrosion material; the piezoresistive sensor 4 is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor 4, thereby increasing the service life of the piezoresistive sensor 4.

[0057] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0058] S1, the signal of the piezoresistive sensor 4 is transmitted to the transmission unit 11 through the signal cable 10;

[0059] S2, the transmission unit 11 processes the signal of the piezoresistive sensor 4;

[0060] S3, transmitting the signal processed by the transmission unit 11 to the monitoring unit 12 through the signal cable 10;

[0061] S4, the monitoring unit 12 controls the display unit 13 to display the signal processed by the transmission unit 11 on the display unit 13;

[0062] S5 , expressing the weight change of each demister module 2 through the full-section dot matrix graphic displayed by the display unit 13 , so as to monitor the blockage condition of the demister module 2 online.

[0063] In the step S5, the display unit 13 displays red, yellow and green colors to express the weight change of each defogger module 2. The red color indicates that the defogger module 2 is blocked and needs to be flushed, the yellow color indicates that the piezoresistive sensor 4 fails and needs to be repaired, and the green color indicates that the defogger module 2 is operating normally. The three colors express three different meanings, which makes it convenient for the staff to quickly and accurately find the blockage problem according to the color and flush on demand.

[0064] Embodiment 10 of the present invention: A full-section online monitoring device for demister blockage, comprising an absorption tower 1, a plurality of demister modules 2, a plurality of demister support beams 3, a plurality of piezoresistive sensors 4, and a control system 5, wherein the plurality of demister modules 2 are arranged on the demister support beams 3, and both ends of the demister support beams 3 are connected to the inner wall of the absorption tower 1, the demister modules 2 comprise two groups of corrugated blades 6, an upper side plate 7 and two groups of lower side plates 8, the two groups of lower side plates 8 are connected to the upper side plates 7 through the corrugated blades 6, and support rods 9 are arranged below the two groups of lower side plates 8, and the support rods 9 are arranged on the upper side plates 7. The two ends of the rod 9 are connected to the lower part of the lower plate 8, the two ends of the support rod 9 are connected to the side of the defogger support beam 3, the lower part of the lower plate 8 is in close contact with the side of the defogger support beam 3, the piezoresistive sensor 4 is arranged at the contact point between the lower plate 8 and the defogger support beam 3, and a plurality of piezoresistive sensors 4 are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable 10 is arranged on the piezoresistive sensor 4, one end of the signal cable 10 is connected to the piezoresistive sensor 4, and the other end of the signal cable 10 is connected to the control system 5; the piezoresistive sensor 4 outputs a signal to the control system 5 through the signal cable 10. The control system 5 outside the absorption tower 1 displays the weight increase of each demister module 2 in a rectangular dot matrix on the control system 5, so as to sense the blockage of the demister module 2; the multiple demister support beams 3 are arranged horizontally and in parallel; the piezoresistive sensor 4 is arranged at the connection between the two ends of the support rod 9 and the upper surface of the demister support beam 3; the control system 5 includes a transmitter unit 11 and a monitoring unit 12, the transmitter unit 11 is connected to the piezoresistive sensor 4 through a signal cable 10, and the transmitter unit 11 is also electrically connected to the monitoring unit 12 through the signal cable 10; the transmitter unit 11 is connected to the piezoresistive sensor 4 through the signal cable 10; the transmitter unit 11 is connected to the monitoring unit 12 through the signal cable 10. The signal sent by the piezoresistive sensor 4 is processed, and the monitoring unit 12 expresses the information of the signal, and displays the weight increase of each defogger module 2 in a rectangular dot matrix, so as to sense the blockage of the defogger module 2; the monitoring unit 12 includes a display unit 13; the display unit 13 clearly displays the information of the signal expressed by the monitoring unit 12; the shell of the piezoresistive sensor 4 is made of anti-corrosion material; the piezoresistive sensor 4 is in a corrosive environment for a long time, and the anti-corrosion material can effectively prevent and reduce the corrosion of the piezoresistive sensor 4, thereby increasing the service life of the piezoresistive sensor 4.

[0065] A monitoring method of a full-section online monitoring device for demister blockage comprises the following steps:

[0066] S1, the signal of the piezoresistive sensor 4 is transmitted to the transmission unit 11 through the signal cable 10;

[0067] S2, the transmission unit 11 processes the signal of the piezoresistive sensor 4;

[0068] S3, transmitting the signal processed by the transmission unit 11 to the monitoring unit 12 through the signal cable 10;

[0069] S4, the monitoring unit 12 controls the display unit 13 to display the signal processed by the transmission unit 11 on the display unit 13;

[0070] S5 , expressing the weight change of each demister module 2 through the full-section dot matrix graphic displayed by the display unit 13 , so as to monitor the blockage condition of the demister module 2 online.

[0071] In the step S5, data is displayed through the display unit 13, and the data is set with an upper threshold and a lower threshold. If the displayed data is higher than the upper threshold, it means that the defogger module 2 is blocked and needs to be flushed. If the displayed data is between the upper threshold and the lower threshold, it means that the defogger module 2 is operating normally. If the displayed data is lower than the lower threshold, it means that the piezoresistive sensor 4 has a fault and needs to be repaired. Setting the upper threshold and the lower threshold facilitates the staff to quickly and accurately find the blockage problem according to the displayed data, so as to achieve on-demand flushing.

[0072] The working principle of an embodiment of the present invention: when the present invention is working, all the piezoresistive sensors 4 are started, and the signals of the piezoresistive sensors 4 are transmitted to the transmitting unit 11 through the signal cable 10; the transmitting unit 11 processes the signals of the piezoresistive sensors 4; the signals processed by the transmitting unit 11 are transmitted to the monitoring unit 12 through the signal cable 10; the monitoring unit 12 controls the display unit 13 to display the signals processed by the transmitting unit 11 on the display unit 13; the weight changes of each defogger module 2 are expressed by the full-section dot matrix graphics displayed by the display unit 13, so as to monitor the blockage conditions of the defogger modules 2 online.

Claims

1. A full-section online monitoring device for demister blockage, It is characterized in that The invention comprises an absorption tower (1), a plurality of demister modules (2), a plurality of demister support beams (3), a plurality of piezoresistive sensors (4), and a control system (5). The plurality of demister modules (2) are arranged on the demister support beams (3). Both ends of the demister support beams (3) are connected to the inner wall of the absorption tower (1). The demister modules (2) comprise two groups of corrugated blades (6), an upper side plate (7), and two groups of lower side plates (8). One end of the corrugated blades (6) is connected to the upper side plate (7). The wavy blade (6) is connected to one side of the plate (7), the other end of the wavy blade (6) is connected to the lower plate (8), a support rod (9) is arranged below the wavy blade (6), both ends of the support rod (9) are connected to the lower part of the lower plate (8), both ends of the support rod (9) are connected to the upper surface of the demister support beam (3), the lower part of the lower plate (8) is connected to the side of the demister support beam (3), and the piezoresistive sensor (4) is arranged between the demister support beam (3) and the lower plate (8) At the contact point, a plurality of piezoresistive sensors (4) are equidistantly spaced and distributed in a full-section rectangular dot matrix. A signal cable (10) is provided on the piezoresistive sensor (4). One end of the signal cable (10) is connected to the piezoresistive sensor (4), and the other end of the signal cable (10) is connected to the control system (5). The plurality of defogger support beams (3) are arranged horizontally and in parallel. The piezoresistive sensor (4) is arranged at the connection between the lower plate (8) and the defogger support beam (3). The control system (5) comprises a transmitter unit (11) and a monitoring unit (12). The transmitter unit (11) is connected to the piezoresistive sensor (4) via the signal cable (10). The transmitter unit (11) is also electrically connected to the monitoring unit (12) via the signal cable (10). The piezoresistive sensor (4) is arranged at the connection between the two ends of the support rod (9) and the upper surface of the defogger support beam (3). The monitoring unit (12) comprises a display unit (13).

2. A full-section online monitoring device for demister blockage according to claim 1, It is characterized in that The housing of the piezoresistive sensor (4) is made of corrosion-resistant material.

3. A monitoring method for a full-section online monitoring device for demister blockage according to any one of claims 1 to 2, It is characterized in that The following steps are included: S1, the signal of the piezoresistive sensor (4) is transmitted to the transmission unit (11) via the signal cable (10); S2, the transmission unit (11) processes the signal of the piezoresistive sensor (4); S3, transmitting the signal processed by the transmission unit (11) to the monitoring unit (12) via the signal cable (10); S4, the monitoring unit (12) controls the display unit (13) to display the signal processed by the transmission unit (11) on the display unit (13); S5, expressing the weight change of each demister module (2) through a full-section dot matrix graphic displayed by the display unit (13), so as to monitor the blockage condition of the demister module (2) online.

4. The monitoring method of the full-section online monitoring device for demister blockage according to claim 3, It is characterized in that In the step S5, the display unit (13) displays red, yellow and green colors to express the weight change of each defogger module (2), wherein the red color indicates that the defogger module (2) is clogged and needs to be flushed, the yellow color indicates that the piezoresistive sensor (4) is faulty and needs to be repaired, and the green color indicates that the defogger module (2) is operating normally.

5. The monitoring method of the full-section online monitoring device for demister blockage according to claim 3, It is characterized in that In the step S5, data is displayed via a display unit (13), wherein the data is provided with an upper threshold and a lower threshold. If the displayed data is higher than the upper threshold, it indicates that the defogger module (2) is clogged and needs to be flushed; if the displayed data is between the upper threshold and the lower threshold, it indicates that the defogger module (2) is operating normally; and if the displayed data is lower than the lower threshold, it indicates that the piezoresistive sensor (4) is faulty and needs to be repaired.

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