CN216964076U - Desulfurization absorption tower with level gauge - Google Patents

Abstract

The utility model discloses a desulfurization absorption tower with a liquid level meter, which comprises an absorption tower cylinder, an absorption tower liquid level meter and a scrubbing device, wherein the absorption tower cylinder is provided with a liquid level meter; the absorption tower liquid level meter comprises a window base and a transparent window, wherein the window base is arranged on the wall surface of the absorption tower cylinder, a long hole is formed in the wall surface of the absorption tower cylinder at a position corresponding to the window base, the transparent window is hermetically arranged on the window base, and a liquid level meter graduated scale is arranged on the transparent window; the scrubbing device is arranged on the barrel body of the absorption tower and can scrub the inner surface of the transparent window. The utility model can monitor the liquid level of the slurry in the absorption tower, the height of the foam layer and the quality of the slurry in real time by using the liquid level meter of the absorption tower, and can prevent dirt on a window from being accumulated by using the scrubbing device.

Description

Desulfurization absorption tower with level gauge

Technical Field

The utility model belongs to the field of wet flue gas desulfurization, and relates to a desulfurization absorption tower with a liquid level meter.

Background

The wet flue gas desulfurization absorption tower is a totally-enclosed steel structure cylinder, and desulfurization absorbent slurry is circularly sprayed and washed in the closed space of the absorption tower to achieve the aim of desulfurization. In normal operation, the slurry in the bottom of the absorption tower maintains a relatively stable liquid level. In engineering application, an indirect measurement method is usually adopted for the liquid level of the absorption tower, 2 flange interfaces are respectively led out at the positions 1 m and 2m away from the absorption tower, a pressure difference transmitter is connected in a butt joint mode, the other two flange interfaces are connected with the pressure transmitter, the installation height difference of the pressure difference transmitter is a known quantity, the density of the slurry is obtained through a measured value, and then the liquid level height of the slurry is obtained through the pressure intensity at a certain liquid level.

The liquid level of the absorption tower is calculated in real time through three measurement data, and the method has the following defects: firstly, if one measured value is abnormal in operation, the display of the liquid level of the absorption tower greatly fluctuates at the moment, and the real liquid level cannot be correctly reflected; and secondly, due to the influence of fire coal components, the quality of process water, the quality of an absorbent and the like, slurry foaming and quality deterioration often occur in the desulfurization absorption tower. When slurry foams, the density of the slurry is not uniform, which causes inaccurate liquid level measurement of the absorption tower and easy slurry overflow. The deterioration of slurry quality causes the reduction of desulfurization efficiency and difficult dehydration of gypsum, and affects the safe and stable operation of a desulfurization system. The liquid level of the absorption tower is measured by adopting a differential pressure type liquid level meter, the problems of slurry foaming, slurry quality deterioration and the like cannot be found in time, and after the development is serious, the shutdown for replacing the slurry is needed, so that serious economic loss can be brought.

The absorbent slurry for wet desulphurization is a turbid solid-liquid mixture and is easily attached to a transparent window, and after a long time, dirt adhered to the window is more and more, so that an observer cannot well observe the liquid level of the absorption tower and the conditions in the tower.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model aims to provide a desulfurization absorption tower with a liquid level meter, which can monitor the liquid level of slurry in the absorption tower, the height of a foam layer and the quality of the slurry in real time and can prevent dirt from being accumulated on a window.

The technical scheme adopted by the utility model is as follows:

a desulfurization absorption tower with a liquid level meter comprises an absorption tower cylinder, an absorption tower liquid level meter and a scrubbing device;

the absorption tower liquid level meter comprises a window base and a transparent window, wherein the window base is arranged on the wall surface of the absorption tower cylinder, a long hole is formed in the wall surface of the absorption tower cylinder at a position corresponding to the window base, the transparent window is hermetically arranged on the window base, and a liquid level meter graduated scale is arranged on the transparent window;

the scrubbing device is arranged on the barrel body of the absorption tower and can scrub the inner surface of the transparent window.

Preferably, one side of window base welds on the wall of absorption tower barrel, and the opposite side of window base is the flange face, and one side butt joint of transparent window is on the flange face of window base, and the opposite side of transparent window covers has the window apron, and the rectangular mouth has been seted up to the centre of window apron, and the window apron is round bolt hole all around, and transparent window passes through window apron and bolt and window base sealing connection.

Preferably, the lower end of the window base is provided with an anti-deposition slope, and the anti-deposition slope extends to the inner surface of the absorption tower cylinder.

Preferably, the scrubbing device comprises a driving scrubbing module, a driving mechanism and a driven scrubbing module, the driving scrubbing module and the driven scrubbing module are respectively arranged on the inner side and the outer side of the transparent window, permanent magnets are arranged on the driving scrubbing module and the driven scrubbing module, and the permanent magnets on the driving scrubbing module and the driven scrubbing module attract each other;

the driving mechanism is arranged on the outer surface of the absorption tower cylinder and can drive the active scrubbing module to move up and down along the transparent window.

Preferably, rubber scrapers are arranged on the sides, close to the transparent window, of the driving scrubbing module and the driven scrubbing module;

the active scrubbing module and the driven scrubbing module are respectively provided with a roller at one side close to the transparent window, and can move up and down along the transparent window by the aid of the rollers;

the driven rope that prevents falling that is connected with on the module of washing, the one end of preventing falling the rope with absorb tower barrel top and be connected, the one end and the driven module of washing of preventing falling the rope, when the driven module of washing moves to the lower extreme of transparent window, prevent that the rope that falls straightens just.

Preferably, the driving mechanism comprises a connecting rod, a guide rail and a driving mechanism, the middle part of the connecting rod is connected with the driving scrubbing module, the guide rail and the driving mechanism are respectively arranged on two sides of the absorption tower liquid level meter, a driven sliding block is sleeved on the guide rail, and one end of the connecting rod is connected with the driven sliding block; the driving mechanism is connected with a driving sliding block, and the other end of the connecting rod is connected with the driving sliding block.

Preferably, the driving mechanism adopts a belt transmission mechanism or a screw rod transmission mechanism;

when the driving mechanism adopts a belt transmission mechanism, the driving mechanism comprises a driving motor and a transmission belt, an output shaft of the driving motor is connected with the transmission belt, and a driving sliding block is connected with the transmission belt;

when the driving mechanism adopts a screw rod transmission mechanism, the driving mechanism comprises a driving motor and a transmission screw rod, an output shaft of the driving motor is connected with the transmission screw rod, and the transmission screw rod is in threaded connection with the driving slide block.

Preferably, the desulfurization absorption tower with the liquid level meter further comprises a limit switch and a PLC, the limit switch is arranged at the upper limit position and the lower limit position of the driving sliding block on the absorption tower cylinder, the limit switch and the driving mechanism are connected with the PLC, and when the driving sliding block moves to the upper limit position and the lower limit position, the PLC can control the driving mechanism to stop and/or switch the driving direction.

Preferably, the desulfurization absorption tower with the liquid level meter further comprises a flushing device, the flushing device comprises a flushing nozzle, an electromagnetic valve and a flushing water pipe, the electromagnetic valve is mounted on the absorption tower barrel body or the window base, the flushing water pipe and the flushing nozzle are respectively connected with the inlet and the outlet of the electromagnetic valve, the spraying direction of the flushing nozzle faces towards the transparent window, and the electromagnetic valve is connected with the PLC.

Preferably, the flushing nozzle is a fan nozzle.

The utility model has the following beneficial effects:

the transparent window is arranged, the liquid level gauge is arranged on the transparent window, the liquid level of the slurry in the tower barrel can be directly measured, and if foaming and other phenomena occur, the phenomenon can be clearly observed through the transparent window, so that the real liquid level of the slurry can be obtained. The window base sets up on the wall of absorption tower barrel, and consequently whole absorption tower level gauge is convex, consequently can conveniently change the transparent window of level gauge outside absorption tower barrel, has avoided the interior restricted space operation of tower, the transformation and the upgrading of the absorption tower level gauge of being convenient for. Through the arrangement of the scrubbing device, the transparent window, particularly the inner surface of the transparent window, can be scrubbed, and slurry and impurities adhered to the transparent window can be scrubbed and the slurry liquid level can be accurately displayed.

Further, the lower extreme of window base is equipped with prevents the deposit slope, can prevent that thick liquid solid suspended solid from influencing the window function at window bottom deposit, pile up or even harden.

Furthermore, permanent magnets are arranged on the driving scrubbing module and the driven scrubbing module, and the permanent magnets on the driving scrubbing module and the driven scrubbing module attract each other, so that the transparent window cleaning device is suitable for simultaneously scrubbing the inner surface and the outer surface of the transparent window, and is simple in structure and practical in function;

furthermore, by arranging the rubber scraper, dirt on the transparent window is easy to scrape, and the transparent window is ensured to be clean; by arranging the roller, the resistance of the active scrubbing module and the driven scrubbing module is smaller and smoother when the active scrubbing module and the driven scrubbing module move; through setting up the rope that prevents falling, can prevent that the driven module of cleaning from not knowing after dropping.

Drawings

FIG. 1 is a front view of a desulfurization absorption tower having a liquid level meter according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I;

FIG. 3 is a partial cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a side view of an absorption column level gauge of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at II;

FIG. 6 is a rear view of an absorber liquid level gauge and swab of the present invention.

Wherein, 1 is an absorption tower cylinder, 2 is an absorption tower liquid level meter, 3 is a liquid level meter graduated scale, 4 is a slurry liquid level, 5 is a driving scrubbing module, 6 is a connecting rod, 7 is a driving slider, 8 is a driven slider, 9 is a transmission belt, 10 is a guide rail, 11 is a limit switch, 12 is a driving motor, 13 is a flushing nozzle, 14 is an electromagnetic valve, 15 is a flushing water pipe, 16 is a driven scrubbing module, 17 is a scrubbing module shell, 18 is a transmission hole structure, 19 is a roller, 20 is a rubber scraper, 21 is a permanent magnet, 22 is an anti-falling rope, 23 is a window base, 24 is a transparent window, 25 is a window cover plate, and 26 is an anti-deposition slope.

Detailed Description

The utility model is described in further detail below with reference to the following figures and examples:

referring to fig. 1, the desulfurization absorption tower with a liquid level meter of the utility model comprises an absorption tower cylinder 1, an absorption tower liquid level meter 2 and a scrubbing device; the absorption tower liquid level meter 2 comprises a window base 23 and a transparent window 24, the window base 23 is arranged on the wall surface of the absorption tower cylinder 1, a long hole is formed in the wall surface of the absorption tower cylinder 1 at a position corresponding to the window base 23, the transparent window 24 is hermetically arranged on the window base 23, and a liquid level meter graduated scale 3 is arranged on the transparent window 24; the scrubbing device is arranged on the absorption tower cylinder body 1 and can scrub the inner surface of the transparent window 24. The transparent window 24 is made of transparent materials such as organic glass or toughened glass.

As a preferred embodiment of the present invention, referring to fig. 1, fig. 2, fig. 4 and fig. 5, one side of the window base 23 is welded on the wall surface of the absorption tower cylinder 1, the other side of the window base 23 is a flange surface, one side of the transparent window 24 is butted on the flange surface of the window base 23, the other side of the transparent window 24 is covered with a window cover plate 25, a long opening is opened in the middle of the window cover plate 25, a circle of bolt holes are arranged around the window cover plate 25, and the transparent window 24 is hermetically connected with the window base 23 through the window cover plate 25 and bolts.

Referring to fig. 1 and 4, as a preferred embodiment of the present invention, the lower end of the window base 23 is provided with an anti-settling slope 26, and the anti-settling slope 26 extends to the inner surface of the absorption tower cylinder 1.

As a preferred embodiment of the present invention, referring to fig. 2, 3 and 6, the scrubbing device includes a driving scrubbing module 5, a driving mechanism and a driven scrubbing module 16, the driving scrubbing module 5 and the driven scrubbing module 16 are respectively disposed at the inner side and the outer side of a transparent window 24, permanent magnets are disposed on the driving scrubbing module 5 and the driven scrubbing module 16, and the permanent magnets on the driving scrubbing module 5 and the driven scrubbing module 16 attract each other; the driving mechanism is arranged on the outer surface of the absorption tower cylinder body 1 and can drive the active scrubbing module 5 to move up and down along the transparent window 24.

Referring to fig. 3 and 6, as a preferred embodiment of the present invention, the active scrub module 5 and the passive scrub module 16 are each provided with a squeegee 20 on a side thereof adjacent to the transparent window 24; the rollers 19 are arranged on the sides, close to the transparent window 24, of the driving scrubbing module 5 and the driven scrubbing module 16, and the driving scrubbing module 5 and the driven scrubbing module 16 can move up and down along the transparent window 24 by using the rollers 19; referring to fig. 3 and 6, the driven scrubbing module 16 is connected with an anti-falling rope 22, one end of the anti-falling rope 22 is connected with the top of the absorption tower cylinder 1, one end of the anti-falling rope 22 is connected with the driven scrubbing module 16, and when the driven scrubbing module 16 moves to the lower end of the transparent window 24, the anti-falling rope 22 is straightened.

Referring to fig. 2, the driving mechanism comprises a connecting rod 6, a guide rail 10 and a driving mechanism, the middle part of the connecting rod 6 is connected with the driving scrubbing module 5, the guide rail 10 and the driving mechanism are respectively arranged at two sides of the absorption tower liquid level meter 2, a driven sliding block 8 is sleeved on the guide rail 10, and one end of the connecting rod 6 is connected with the driven sliding block 8; the driving mechanism is connected with a driving sliding block 7, and the other end of the connecting rod 6 is connected with the driving sliding block 7.

As a preferred embodiment of the present invention, referring to fig. 2, the driving mechanism adopts a belt transmission mechanism or a lead screw transmission mechanism, the transmission lead screw can provide greater transmission force and rigidity compared with the belt transmission mechanism, when the driving mechanism adopts the belt transmission mechanism, the driving mechanism comprises a driving motor 12 and a transmission belt 9, an output shaft of the driving motor 12 is connected with the transmission belt 9, and a driving slider 7 is connected with the transmission belt 9; when the driving mechanism adopts a screw rod transmission mechanism, the driving mechanism comprises a driving motor 12 and a transmission screw rod, an output shaft of the driving motor 12 is connected with the transmission screw rod, and the transmission screw rod is in threaded connection with the driving slide block 7.

Referring to fig. 2, the desulfurization absorption tower with the liquid level meter further comprises a limit switch 11 and a PLC, the limit switch 11 is arranged at the upper limit position and the lower limit position of the driving slide block 7 on the absorption tower cylinder 1, the limit switch 11 and the driving mechanism are both connected with the PLC, and when the driving slide block 7 moves to the upper limit position and the lower limit position, the PLC can control the driving mechanism to stop and/or switch the driving direction.

Referring to fig. 1, 2, 4-6, the desulfurization absorption tower with a liquid level meter according to the present invention further includes a flushing device, the flushing device includes a flushing nozzle 13, a solenoid valve 14 and a flushing water pipe 15, the solenoid valve 14 is mounted on the absorption tower barrel 1 or the window base 23, the flushing water pipe 15 and the flushing nozzle 13 are respectively connected with an inlet and an outlet of the solenoid valve 14, the spraying direction of the flushing nozzle 13 faces the transparent window 24, and the solenoid valve 14 is connected with the PLC.

As a preferred embodiment of the present invention, a fan-shaped nozzle is used as the washing nozzle 13.

Examples

Referring to fig. 1 to 6, the absorption tower level gauge 2 of the present embodiment is located at the middle upper portion of the absorption tower cylinder 1, and the slurry level 4 is located in the central region of the absorption tower level gauge 2 in the desulfurization system operation. The inner side of the absorption tower liquid level meter 2 is vertically welded on the absorption tower cylinder body 1, the whole absorption tower liquid level meter 2 protrudes out of the wall surface of the absorption tower cylinder body 1, and the absorption tower liquid level meter 2 is in a long strip shape. 2 outsides (the right side shown in figure 4 and figure 5) of absorption tower level gauge are as window base 23 for the flange face, transparent window 24, window apron 25 covers on window base 23 in proper order, rectangular window is opened at window apron 25 middle part and is regarded as the window field of vision (being window apron 25's shape is the annular promptly), window apron 25 passes through bolted connection with window base 23, be used for fastening transparent window 24, seal between the flange face of transparent window 24 and window base 23, the slot hole has been seted up with the region that window base 23 corresponds on the absorption tower barrel 1. As shown in fig. 4 and 6, the bottom of the window base 23 is designed as a deposition-preventing slope 26. The anti-settling slope 26 is a slope that slopes downward from the base of the window and has a greater slope. The outer surface of the transparent window 24 is adhered with a liquid level meter graduated scale 3 in the vertical direction, and the scale mark on the liquid level meter graduated scale 3 is the distance from the scale mark to the bottom of the absorption tower slurry pool. The design of the liquid level meter base protruding from the tower wall is adopted, the transparent window of the liquid level meter can be replaced outside the tower, the operation in the limited space in the tower is avoided, and the transformation and the upgrading of the liquid level meter of the absorption tower are facilitated. The bottom of the liquid level meter is designed to be inclined, the tower wall of the absorption tower is overlapped downwards in an inclined mode from the bottom of the transparent window, so that a deposition-preventing slope is formed, and the slurry solid suspended matters can be prevented from being deposited, stacked or even hardened at the bottom of the window to influence the function of the window. The outer surface of the transparent window of the liquid level meter is provided with liquid level scales, so that the liquid level value can be conveniently read.

Absorbent slurry easily stains on the transparent window 24, and the scrubbing device is designed for the absorption tower liquid level meter. The scrub device comprises a master scrub module 5 and a slave scrub module 16. The structure of the active scrubbing module 5 is similar to that of the driven scrubbing module 16, as shown in fig. 3, the scrubbing module shell 17 is arranged on the outer sides of the two modules, rollers 19 are arranged at four corners of the bottom (i.e. the side facing the transparent window 24) of the scrubbing module shell 17, and a rubber scraper 20 is embedded in the center of the bottom. The scrub module housing 17 centrally locates the permanent magnet 21. The transmission system comprises a driving motor 12, a transmission belt 9, a guide rail 10, a limit switch 11, a connecting rod 6, a driving slide block 7 and a driven slide block 8. The transmission belt 9 and the guide rail 10 are arranged on two sides of the window cover plate 25 in parallel, and the limit switches 11 are arranged on the upper end and the lower end of the transmission belt. The driving scrubbing module 5 is provided with a transmission hole structure 18 at the top of the shell (the right end shown in figure 3), when in assembly, the rigid connecting rod 6 penetrates through the transmission hole structure 18, and two ends of the connecting rod 6 are respectively connected with the driving slide block 7 and the driven slide block 8. The driving slide block is fixed on a transmission belt 9, and the transmission belt 9 is driven by a driving motor 12. The follower slide 8 is mounted on a guide rail 10. The driven scrubbing module 16 and the driving scrubbing module 5 generate magnetic attraction force by the permanent magnets 21 with opposite magnetic poles oppositely arranged in the scrubbing module shell 17, and are adsorbed on the inner side and the outer side of the transparent window 24. Anti-drop lugs are provided on both sides of the housing of the driven scrubbing module 16. The driven scrubbing module 16 has a lifting lug attached to a fall arrest line 22. The drive belt 9 is driven by a head end drive motor 12, the drive motor 12 providing power for the entire scrub module to travel. The follower slide 8 rides on a slide track 10 which provides primarily rigid support for the moving module and resists the planar torque generated during movement of the scrubbing module to allow the module to travel in a set direction. The driven scrubbing module 16 is soaked inside the slurry tank, the module is only adsorbed on the inner surface of the liquid level meter through magnetic force, when the scrubbing module slides up and down, foreign matters are encountered or the scrubbing module is moved to be jammed, and when the suction is insufficient, the driven scrubbing module slides inevitably. The present invention provides protection from the fall of the rope 22 so that the driven scrubber module 16 does not fall to the bottom of the slurry tank and is lost. The top of the anti-falling rope 22 can be tied on a bolt at the top of the window, the length of the anti-falling rope is equivalent to that of the window, when the driven scrubbing module 16 falls off, the anti-falling rope finally stays at the bottom of the window, and when the driving scrubbing module 5 moves to reach the bottom of the window, the two modules can be automatically attracted mutually to restore the working state. The starting and final staying positions of the scrubbing module are at the bottom of the window, so that the liquid level degree on the window is prevented from being influenced.

Set up a sparge water at the level gauge base top all the way, rinse-system includes: a flushing nozzle 13, a solenoid valve 14 and a flushing water pipe 15. The washing nozzle 13 adopts a fan-shaped nozzle, is arranged at the top of the liquid level meter 2 of the absorption tower in the absorption tower and inclines towards the direction of the window for washing the inner wall surface of the transparent window 24, washing water can flow down along the wall surface after washing on the inner wall surface of the window, the fan-shaped nozzle has a larger washing range, and the throw pillow is more clean in washing. The driving motor 12 and the limit switch 11 in the transmission system and the electromagnetic valve 18 in the flushing system are controlled by a PCL controller. When the scrubbing module moves, the electromagnetic valve is opened, washing water is sprayed into the upper portion of the window, and when the scrubbing module stops, the electromagnetic valve is closed, and washing stops. And the upper end and the lower end of the driving belt are respectively provided with a limit switch, and when the scrubbing module moves to touch the limit switches, the scrubbing module starts to move reversely or stops giving an instruction. The PCL controller provides signals with the help of a limit switch, a driving motor is controlled to drive a transmission belt to reciprocate up and down, a driving sliding block on the transmission belt drives a driving scrubbing module through a connecting rod, and a driven scrubbing module moves simultaneously with the driving scrubbing module through magnetic force. When the scrubbing module moves, the washing water at the top of the window is controlled by the PLC to be opened at the same time, and the rubber scraper on the scrubbing module is sprayed by the clean water, so that the slurry residue on the transparent window can be easily scraped and wiped. In addition, parameters such as window scrubbing frequency, module reciprocating stroke frequency, stroke distance, moving speed and the like can be set on the PCL controller, so that the automatic operation of the scrubbing device is realized.

The liquid level meter window adopts the design of the scrubbing module with internal and external magnetic attraction, can avoid the occurrence of a sliding sealing surface on the absorption tower, ensures good sealing performance, and prevents the potential hazards of slurry leakage, air leakage and the like easily occurring on the sliding sealing surface. Secondly, the transmission device of the movable scrubbing module is arranged on two sides of the transparent window by adopting double-track arrangement instead of arranging a single transmission guide rail in the center of the window, so that the guide rail is separated from the window, the guide rail is prevented from occupying limited window space area, and the interference and influence on liquid level reading are reduced.

The operation method of the desulfurization absorption tower with the liquid level meter comprises the following steps:

during the operation of the desulfurization system, the slurry liquid level 4 of the slurry pool is exposed in the visual range of the absorption tower liquid level meter 2. The liquid level height in the slurry tank can be read by comparing the slurry liquid level 4 with the liquid level dividing ruler 3, and then the slurry in the tower can be directly observed through the transparent window 24, so that the information such as whether the color of the slurry is normal, whether the slurry is foamed, whether the slurry has poisoning tendency and the like can be mastered. The slurry level is controlled by operators, and reference is provided for the slurry quality. The deposit prevention slope 26 is used to prevent solids contained in the slurry from depositing on the bottom of the absorption tower level gauge 2 during long-term operation.

The gauge scrub device is used to clean the transparent window 24. The operation method of the scrubbing device is that the PLC starts the scrubbing process at preset time intervals (such as 0.5-2h), the time of a single scrubbing process is set to be 2min, and the moving speed is set to be 0.5 m/s. The flow starts to start a driving motor 12 and simultaneously starts a washing water electromagnetic valve 14, the driving motor 12 drives a series of moving parts, namely a transmission belt 9, a driving slide block 7 on the belt, a connecting rod 6, a driving scrubbing module 5, a driven slide block 8 and a driven scrubbing module 16, to move in a window stroke interval, the moving parts touch limit switches 11 at the upper end and the lower end of the transmission belt 9 and then turn back to move reversely, and the moving parts reciprocate up and down within the set scrubbing time. The initial position of the moving part and the stop position after the scrubbing process are arranged at the bottom of the transparent window 24, so that the moving part is prevented from blocking the reading of the liquid level meter. When the moving part moves, the driving scrubbing module 5 and the driven scrubbing module 16 scrape dirt from the surface of the transparent window 24 by means of the relative sliding of the rubber scraper 20 at the bottom and the transparent window 24, and the dirt is washed into the slurry by the washing water, so that the effect of cleaning the transparent window 24 is achieved. In the moving process, if foreign matters are jammed, when the driven scrubbing module 16 falls off, the driven scrubbing module 16 is hung by the anti-falling rope 22 and falls back to the bottom of the absorption tower liquid level meter 2, and when the driving scrubbing module 5 moves to return to the position, the two modules are attracted again to continue to work. And at the end stage of the scrubbing process, the moving part returns to the bottom of the transparent window 24, the driving motor 12 is stopped, and the flushing water electromagnetic valve 14 is closed after delaying for 10 s.

Claims (10)

1. A desulfurization absorption tower with a liquid level meter is characterized by comprising an absorption tower cylinder (1), an absorption tower liquid level meter (2) and a scrubbing device;

the absorption tower liquid level meter (2) comprises a window base (23) and a transparent window (24), the window base (23) is arranged on the wall surface of the absorption tower cylinder body (1), a long hole is formed in the wall surface of the absorption tower cylinder body (1) at a position corresponding to the window base (23), the transparent window (24) is hermetically arranged on the window base (23), and a liquid level meter graduated scale (3) is arranged on the transparent window (24);

the scrubbing device is arranged on the absorption tower cylinder body (1) and can scrub the inner surface of the transparent window (24).

2. The desulfurization absorption tower with the liquid level meter as recited in claim 1, wherein one side of the window base (23) is welded on the wall surface of the absorption tower cylinder (1), the other side of the window base (23) is a flange surface, one side of the transparent window (24) is butted on the flange surface of the window base (23), the other side of the transparent window (24) is covered with a window cover plate (25), the middle of the window cover plate (25) is provided with a long strip opening, the periphery of the window cover plate (25) is provided with a circle of bolt holes, and the transparent window (24) is hermetically connected with the window base (23) through the window cover plate (25) and the bolts.

3. The desulfurization absorption tower with a liquid level meter according to claim 1, wherein the lower end of the window base (23) is provided with an anti-settling slope (26), and the anti-settling slope (26) extends to the inner surface of the absorption tower cylinder (1).

4. The desulfurization absorption tower with the liquid level meter as claimed in claim 1, wherein the scrubbing device comprises a driving scrubbing module (5), a driving mechanism and a driven scrubbing module (16), the driving scrubbing module (5) and the driven scrubbing module (16) are respectively arranged at the inner side and the outer side of the transparent window (24), permanent magnets are respectively arranged on the driving scrubbing module (5) and the driven scrubbing module (16), and the permanent magnets on the driving scrubbing module (5) and the driven scrubbing module (16) attract each other;

the driving mechanism is arranged on the outer surface of the absorption tower cylinder body (1) and can drive the active scrubbing module (5) to move up and down along the transparent window (24).

5. The desulfurization absorption tower with a liquid level meter according to claim 4, characterized in that the driving scrubbing module (5) and the driven scrubbing module (16) are provided with rubber wipers (20) at the side close to the transparent window (24);

the active scrubbing module (5) and the driven scrubbing module (16) are respectively provided with a roller (19) at one side close to the transparent window (24), and the active scrubbing module (5) and the driven scrubbing module (16) can move up and down along the transparent window (24) by utilizing the rollers (19);

the driven module (16) of scrubbing is connected with prevents falling rope (22), and the one end and the absorption tower barrel (1) top of preventing falling rope (22) are connected, and the one end and the driven module (16) of scrubbing of preventing falling rope (22), when the driven module (16) of scrubbing moves to the lower extreme of transparent window (24), prevent that the rope (22) of falling straightens just.

6. The desulfurization absorption tower with the liquid level meter is characterized in that the driving mechanism comprises a connecting rod (6), a guide rail (10) and a driving mechanism, the middle part of the connecting rod (6) is connected with the driving scrubbing module (5), the guide rail (10) and the driving mechanism are respectively arranged at two sides of the liquid level meter (2) of the absorption tower, a driven sliding block (8) is sleeved on the guide rail (10), and one end of the connecting rod (6) is connected with the driven sliding block (8); the driving mechanism is connected with a driving sliding block (7), and the other end of the connecting rod (6) is connected with the driving sliding block (7).

7. The desulfurization absorption tower with the liquid level meter as recited in claim 6, wherein the active mechanism is a belt transmission mechanism or a screw transmission mechanism;

when the driving mechanism adopts a belt transmission mechanism, the driving mechanism comprises a driving motor (12) and a transmission belt (9), an output shaft of the driving motor (12) is connected with the transmission belt (9), and a driving sliding block (7) is connected with the transmission belt (9);

when the driving mechanism adopts a screw rod transmission mechanism, the driving mechanism comprises a driving motor (12) and a transmission screw rod, an output shaft of the driving motor (12) is connected with the transmission screw rod, and the transmission screw rod is in threaded connection with the driving sliding block (7).

8. The desulfurization absorption tower with the liquid level meter is characterized by further comprising a limit switch (11) and a PLC, wherein the limit switch (11) is arranged at the upper limit position and the lower limit position of the driving sliding block (7) on the absorption tower barrel body (1), the limit switch (11) and the driving mechanism are connected with the PLC, and when the driving sliding block (7) moves to the upper limit position and the lower limit position, the PLC can control the driving mechanism to stop and/or switch the driving direction.

9. The desulfurization absorption tower with the liquid level meter is characterized by further comprising a flushing device, wherein the flushing device comprises a flushing nozzle (13), an electromagnetic valve (14) and a flushing water pipe (15), the electromagnetic valve (14) is installed on the absorption tower barrel body (1) or the window base (23), the flushing water pipe (15) and the flushing nozzle (13) are respectively connected with an inlet and an outlet of the electromagnetic valve (14), the spraying direction of the flushing nozzle (13) faces the transparent window (24), and the electromagnetic valve (14) is connected with the PLC.

10. The desulfurization absorption tower with a liquid level meter according to claim 9, wherein the washing nozzle (13) is a fan nozzle.

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