A slurry foaming measuring device for flue gas desulfurization absorption tower

Abstract

The present invention relates to a slurry foaming measuring device for a flue gas desulfurization absorption tower. The technical solution is as follows: two mounting shells are symmetrically fixedly connected to the interior of the tower body, and a float type liquid level gauge is installed inside each of the two mounting shells; a flushing mechanism for cleaning the vertical rod of the float type liquid level gauge is provided at one end of the bottom of each of the two mounting shells. The beneficial effects of the present invention are as follows: by providing a flushing mechanism, the vertical rod and the float in the float type liquid level gauge can be fully flushed, which can effectively prevent impurities from remaining on the surface of the vertical rod and affecting the sliding of the float outside the vertical rod; by providing a bubble expelling mechanism, not only can the bubbles around the first liquid level gauge be expelled and eliminated, and the accumulation of bubbles can be prevented from affecting the measurement accuracy of the first liquid level gauge, but also the position of the float of the first liquid level gauge can be adjusted up and down to ensure the measurement accuracy of the first liquid level gauge, thereby increasing the accuracy of the measurement data of the slurry foaming measuring device.

Description

Technical Field

[0001] The invention belongs to the technical field of desulfurization, and in particular relates to a slurry foaming measuring device for a flue gas desulfurization absorption tower. Background Art

[0002] The limestone-gypsum wet desulfurization process works as follows: Boiler flue gas enters the absorption tower and reacts with the limestone slurry sprayed downward from the tower in a countercurrent flow. The reacted flue gas is discharged through a demister, and the slurry falls into a slurry pool at the bottom of the tower, where it is either further circulated and sprayed or transported to the gypsum dehydration system by a gypsum discharge pump. Oxidizing air is continuously introduced into the limestone slurry. Under the stirring action of the agitator, a large number of bubbles are dispersed in the slurry, forming a dispersed system with a gas phase and a liquid phase. Buoyancy forces the bubbles dispersed in the slurry to the surface of the liquid, where they accumulate. Under normal circumstances, bubbles generated in the liquid quickly break and disappear. However, under the following abnormal conditions, the foam not only persists but also accumulates, forming a foam overflow.

[0003] In order to ensure the normal operation of the absorption tower, it is necessary to measure and monitor the slurry foaming inside the flue gas desulfurization absorption tower in real time. The existing slurry foaming measurement devices for absorption towers mostly use float type liquid level gauges. However, the existing float type liquid level gauges have the following defects when measuring the slurry foaming in the absorption tower:

[0004] 1. In order to prevent impurities from remaining on the surface of the vertical rod and the float ball in the float type liquid level gauge, which may cause jamming, the float type liquid level gauge needs to be flushed regularly. However, most existing flushing methods only flush from top to bottom, resulting in incomplete flushing. Moreover, during flushing, the float ball is prone to slide up and down on the outside of the vertical rod under the action of the flushing water flow, affecting the stability of the measured value of the slurry foaming measurement device, easily triggering the false operation protection, and affecting the safe and stable operation of the entire unit.

[0005] 2. The bubbles outside the float cannot be eliminated while the float for measuring the true liquid level of the slurry moves up and down with the liquid level, causing the bubbles to lift the float and affect the accuracy of measuring the true liquid level of the slurry.

[0006] Therefore, it is necessary to invent a slurry foaming measuring device for a flue gas desulfurization absorption tower to solve the above problems. Summary of the Invention

[0007] In view of the above problems, the present invention provides a slurry foaming measuring device for a flue gas desulfurization absorption tower to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slurry bubble measuring device for a flue gas desulfurization absorption tower, comprising a tower body, wherein two mounting shells are symmetrically fixedly connected to the interior of the tower body, and float-type liquid level gauges are respectively installed inside the two mounting shells. The float-type liquid level gauges include a first liquid level gauge and a second liquid level gauge. The first liquid level gauge is used to measure the true height of the slurry in the tower, and the second liquid level gauge is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism for cleaning the upright rod of the float-type liquid level gauge is provided at one end of the bottom of the two mounting shells, and a bubble-dispelling mechanism for preventing the slurry from bubbling and affecting the measurement accuracy is provided on the outside of the first liquid level gauge, and the bubble-dispelling mechanism is provided on the outside of the flushing mechanism.

[0009] Furthermore, one side of the tower body is fixedly connected to an overflow pipe, and a spray structure for circulating slurry is provided at one end of the top inside the tower body, and the spray structure is arranged above the two mounting shells. The side of the tower body away from the overflow pipe is fixedly connected to a return pipe used in conjunction with the spray structure, and the cross-sectional shape of the return pipe is a side U-shape. A circulation pump is installed at the corner position of one end of the bottom of the return pipe, and a connecting pipe for adding defoaming agent to the return pipe is provided between the circulation pump and the tower body, and the connecting pipe is fixedly connected to the return pipe.

[0010] Furthermore, the flushing mechanism includes annular tubes fixedly connected to one end of the bottom of the two mounting shells, the two annular tubes are connected by a tee tube, one end of the tee tube extends to the outside of the tower body for an external water supply mechanism, and three vertical nozzles are evenly arranged on the inner sides of the two annular tubes, and the three vertical nozzles are fixedly connected to the annular tubes through bends, and the water outlet direction of the three vertical nozzles is vertically downward. The bottom ends of the two annular tubes are symmetrically fixed with diversion pipes, and the inner sides of the two groups of diversion pipes are evenly fixed with multiple horizontal nozzles, and the water outlet direction of the multiple groups of horizontal nozzles is parallel.

[0011] Furthermore, the outside of the two groups of diversion tubes are provided with auxiliary mechanisms to ensure the stability of the float-type liquid level gauge during flushing; the auxiliary mechanism includes a mounting ring fixedly sleeved on the outside of the two diversion tubes, and one end of the bottom of the mounting ring is symmetrically fixedly connected to a square tube, and the two square tubes are arranged between the two diversion tubes, and the opposite sides of the two square tubes are respectively and evenly slidably connected with a plurality of limit rods, and the outer side of the float of the float-type liquid level gauge is fixedly sleeved with a convex ring used in conjunction with the plurality of limit rods, and the ends of the two groups of multiple limit rods away from each other extend to the interior of the square tube and are fixedly connected to a connecting plate together, and the opposite sides of the two connecting plates are fixedly connected with a plurality of first springs, and the multiple first springs are respectively staggered with the multiple limit rods, and the ends of the multiple first springs away from the connecting plate are respectively fixedly connected to the inner walls of the two square tubes, and the two connecting plates are evenly fixedly connected with a plurality of protrusions on the side away from the limit rod.

[0012] Furthermore, one end of the bottom of the inner side of the two diversion tubes is slidably connected to a T-shaped rod, and the outside of the two T-shaped rods is movably sleeved with a second spring, and the two second springs are respectively arranged inside the two diversion tubes, and one end of the bottom of the two T-shaped rods extends to the outside of the diversion tube and is fixedly connected to the same bottom ring. A movable plate is provided inside the two square tubes, and the two movable plates are respectively arranged on the side of the two connecting plates away from the limit rod, and the opposite sides of the two movable plates are evenly fixedly connected with a plurality of push blocks used in conjunction with the protrusions, and one end of the bottom of the two movable plates extends to the outside of the square tube and is fixedly connected to the bottom ring.

[0013] Furthermore, the bubble-expelling mechanism includes a motor fixedly mounted inside one of the mounting shells, one end of the output shaft of the motor is fixedly connected to a screw, the external thread of the screw is connected to an L-shaped plate, the bottom end of the L-shaped plate is fixedly connected to a guide ring, the inner side of the guide ring is rotatably connected to a circular ring, the bottom end of the circular ring is fixedly connected to a bubble-expelling ring, and the inner side of the bubble-expelling ring is evenly fixedly connected to a plurality of spikes for puncturing bubbles.

[0014] Furthermore, a plurality of fan blades are evenly fixed on the outside of the guide ring, and the plurality of fan blades are arc-shaped. A mounting seat is provided on the outside of the guide ring, and the mounting seat and the guide ring are of an integrated design. An air supply pipe for connecting to an external air compressor is fixedly installed inside the mounting seat, and the air supply pipe extends to the outside of the tower body at one end away from the mounting seat. The bottom end of the air supply pipe extends to the bottom of the mounting seat and is fixedly connected to an air nozzle, and the air outlet direction of the air nozzle is inclined downward, and the final position is the recessed position of the fan blade.

[0015] Furthermore, the two T-shaped rods are composed of a piston and a round rod fixedly connected to one end of the bottom of the piston, and the L-shaped plate is composed of an arc plate and a threaded block arranged at one end of the top of the arc plate.

[0016] Furthermore, the screw and the L-shaped plate are both made of corrosion-resistant recyclable plastic material, and the cross-sectional shape of the guide ring is two opposite U-shapes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention is provided with a flushing mechanism, which can achieve comprehensive flushing of the upright rod and the float in the float type liquid level gauge, effectively preventing impurities from remaining on the surface of the upright rod and affecting the sliding of the float outside it, effectively ensuring the normal use of the float type liquid level gauge and improving the accuracy of the measured values ​​of the float type liquid level gauge; by providing a bubble expelling mechanism, not only can the bubbles around the first liquid level gauge be expelled and eliminated, preventing the accumulation of bubbles from affecting the measurement accuracy of the first liquid level gauge, but also the position of the float can be adjusted up and down according to the first liquid level gauge, thereby ensuring the measurement accuracy of the first liquid level gauge, increasing the accuracy of the measurement data of the slurry bubble measuring device, and ensuring the normal operation of the unit;

[0019] 2. The present invention is provided with an auxiliary mechanism, which can temporarily limit and fix the position of the float while flushing the float-type liquid level gauge, preventing the float from moving up and down under the action of high-pressure water flow. It can effectively ensure the stability of the float-type liquid level gauge when it is flushed by the flushing mechanism, avoid the measurement value of the slurry bubble measuring device from being affected, and increase the stability of the measurement value of the slurry bubble measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the present invention;

[0021] Figure 2 It is a partial cross-sectional view of the tower body of the present invention;

[0022] Figure 3 It is a partial structural diagram of the flushing mechanism and auxiliary mechanism of the present invention;

[0023] Figure 4 is a partial cross-sectional view of a square tube of the present invention;

[0024] Figure 5 It is a partial structural cross-sectional view of the auxiliary mechanism of the present invention;

[0025] Figure 6 This is a partial structural cross-sectional view of the bubble driving mechanism of the present invention;

[0026] Figure 7 It is an enlarged schematic diagram of the structure of part A of the present invention;

[0027] Figure: 1. Tower body; 2. Mounting shell; 3. Float-type liquid level gauge; 31. First liquid level gauge; 32. Second liquid level gauge; 4. Flushing mechanism; 41. Ring pipe; 42. Tee pipe; 43. Vertical nozzle; 44. Diverter pipe; 45. Horizontal nozzle; 5. Auxiliary mechanism; 51. Mounting ring; 52. Square pipe; 53. Limit rod; 54. Raised ring; 55. Connecting plate; 56. First spring; 57. Bump; 58. T-shaped Rod; 59, second spring; 60, bottom ring; 61, movable plate; 62, push block; 7, bubble expelling mechanism; 71, motor; 72, screw; 73, L-shaped plate; 74, guide ring; 75, circular ring; 76, bubble expelling ring; 77, spike; 78, fan blade; 79, mounting seat; 80, air supply pipe; 81, air nozzle; 9, overflow pipe; 10, spray structure; 11, return pipe; 12, circulation pump; 13, connecting pipe. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0029] Example 1, the present invention provides a slurry foaming measuring device for a flue gas desulfurization absorption tower, such as Figure 1-Figure 7 As shown, it includes a tower body 1, and two mounting shells 2 are symmetrically fixedly connected inside the tower body 1. Float-type liquid level gauges 3 are respectively installed inside the two mounting shells 2. The float-type liquid level gauges 3 include a first liquid level gauge 31 and a second liquid level gauge 32. The first liquid level gauge 31 is used to measure the true height of the slurry in the tower, and the second liquid level gauge 32 is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism 4 for cleaning the vertical rod of the float-type liquid level gauge 3 is provided at one end of the bottom of the two mounting shells 2. A bubble-removing mechanism 7 for preventing the slurry from bubbling and affecting the measurement accuracy is provided on the outside of the first liquid level gauge 31, and the bubble-removing mechanism 7 is provided on the outside of the flushing mechanism 4.

[0030] An overflow pipe 9 is fixedly connected to one side of the tower body 1. A spray structure 10 for circulating slurry is provided at one end of the top inside the tower body 1, and the spray structure 10 is arranged above the two mounting shells 2. A return pipe 11 used in conjunction with the spray structure 10 is fixedly connected to the side of the tower body 1 away from the overflow pipe 9, and the cross-section of the return pipe 11 is a side U-shape. A circulation pump 12 is installed at the corner position of one end of the bottom of the return pipe 11. A connecting pipe 13 for adding defoaming agent to the return pipe 11 is provided between the circulating pump 12 and the tower body 1, and the connecting pipe 13 is fixedly connected to the return pipe 11;

[0031] The flushing mechanism 4 includes an annular tube 41 fixedly connected to one end of the bottom of the two mounting shells 2. The two annular tubes 41 are connected by a tee tube 42. One end of the tee tube 42 extends to the outside of the tower body 1 for connecting to an external water supply mechanism. Three vertical nozzles 43 are evenly arranged on the inner sides of the two annular tubes 41. The three vertical nozzles 43 are fixedly connected to the annular tube 41 through elbows, and the water outlet direction of the three vertical nozzles 43 is vertically downward. The bottom ends of the two annular tubes 41 are symmetrically fixedly connected to a diversion pipe 44. The inner sides of the two groups of diversion pipes 44 are evenly fixedly connected to multiple nozzles.

[0032] The bubble-expelling mechanism 7 includes a motor 71 fixedly mounted inside one of the mounting shells 2. One end of the output shaft of the motor 71 is fixedly connected to a screw 72. The external thread of the screw 72 is connected to an L-shaped plate 73. One end of the bottom of the L-shaped plate 73 is fixedly connected to a guide ring 74. A circular ring 75 is rotatably connected to the inner side of the guide ring 74. One end of the bottom of the circular ring 75 is fixedly connected to a bubble-expelling ring 76. A plurality of spikes 77 for puncturing bubbles are evenly fixedly connected to the inner side of the bubble-expelling ring 76.

[0033] A plurality of fan blades 78 are evenly fixed on the outside of the guide ring 74, and the plurality of fan blades 78 are all arc-shaped. A mounting seat 79 is provided on the outside of the guide ring 74, and the mounting seat 79 and the guide ring 74 are of an integrated design. An air supply pipe 80 for connecting to an external air compressor is fixedly installed inside the mounting seat 79, and one end of the air supply pipe 80 away from the mounting seat 79 extends to the outside of the tower body 1, and the bottom end of the air supply pipe 80 extends to the bottom of the mounting seat 79 and is fixedly connected to an air nozzle 81, and the air outlet direction of the air nozzle 81 is inclined downward, and the final position is the recessed position of the fan blade 78;

[0034] When using this device, the connecting pipe 13 can be connected to the defoaming agent adding device, and then the circulating pump 12 circulates the slurry inside the tower body 1 through the spray pipe, and the defoaming agent is sprayed together with the circulating slurry. The two float-type liquid level gauges 3 respectively measure the true liquid level of the slurry and the height of the bubbles. The true liquid level measured by the first liquid level gauge 31 minus the bubble height measured by the second liquid level gauge 32 is the bubble thickness of the slurry.

[0035] At the same time, compressed air is sprayed to the plurality of fan blades 78 through the air supply pipe 80 and the air nozzle 81, thereby pushing the plurality of fan blades 78 to drive the bubble expelling ring 76 to rotate counterclockwise through the air flow, so that the plurality of fan blades 78 can expel and puncture the bubbles on the periphery of the bubble expelling ring 76 during the rotation, so that the bubble expelling ring 76 can puncture the bubbles on the inner side of the bubble expelling ring 76 through the plurality of spikes 77 on the inner side during the rotation, thereby improving the expulsion and elimination effect of the bubbles near the first liquid level gauge 31, preventing the bubbles from accumulating near the first liquid level gauge 31 and affecting the first liquid level gauge 31. The accuracy of the measurement by the meter 31; in the above process, when the liquid level changes, the first liquid level meter 31 controls the motor 71 to rotate forward or reverse, and the motor 71 drives the screw 72 to rotate forward or reverse synchronously, so that the screw 72 drives the L-shaped plate 73 to move up and down, so that the L-shaped plate 73 drives the ring 75 and the bubble driving ring 76 and other structures to move up and down synchronously through the guide ring 74, thereby ensuring that the bubble driving mechanism 7 is adjusted up and down synchronously with the liquid level, so that the bubble driving mechanism 7 is always located at the actual liquid level position of the slurry, which can effectively ensure the use effect of the bubble driving mechanism 7;

[0036] When it is necessary to flush the float type liquid level gauge 3, it is only necessary to input high-pressure water flow into the interior of the two annular tubes 41 through the tee pipe 42, so that the high-pressure water flow flushes the vertical rod and the float ball of the float type liquid level gauge 3 from top to bottom through the two sets of vertical nozzles 43 inside the annular tubes 41. At the same time, the two annular tubes 41 respectively spray the high-pressure water flow horizontally toward the vertical rod and the float ball of the float type liquid level gauge 3 through the horizontal nozzles 45 inside the diversion pipe 44, thereby achieving a comprehensive flushing of the float type liquid level gauge 3, which can effectively prevent impurities from adhering to the surface of the vertical rod of the float type liquid level gauge 3 and causing the float ball to become stuck.

[0037] The present invention is provided with a flushing mechanism 4, which can achieve comprehensive flushing of the upright rod and the float in the float type liquid level gauge 3, and can effectively prevent impurities from remaining on the surface of the upright rod, which affects the sliding of the float on its outside, and can effectively ensure the normal use of the float type liquid level gauge 3, and improve the accuracy of the measurement value of the float type liquid level gauge 3; by providing a bubble expelling mechanism 7, not only can the bubbles around the first liquid level gauge 31 be expelled and eliminated, and the accumulation of bubbles can be prevented from affecting the measurement accuracy of the first liquid level gauge 31, but also the position of the float of the first liquid level gauge 31 can be adjusted up and down, thereby ensuring the measurement accuracy of the first liquid level gauge 31, increasing the accuracy of the measurement data of the slurry bubble measuring device, and ensuring the normal operation of the unit.

[0038] like Figure 1-Figure 7 As shown, the outside of the two groups of diverter pipes 44 are both provided with auxiliary mechanisms 5 to ensure the stability of the float type liquid level gauge 3 during flushing;

[0039] The auxiliary mechanism 5 includes a mounting ring 51 fixedly sleeved on the outside of the two shunt pipes 44, one end of the bottom of the mounting ring 51 is symmetrically fixedly connected to a square tube 52, and the two square tubes 52 are arranged between the two shunt pipes 44, and a plurality of limit rods 53 are evenly slidably connected to the opposite sides of the two square tubes 52. The outer side of the float of the float-type liquid level gauge 3 is fixedly sleeved with a convex ring 54 used in conjunction with the plurality of limit rods 53, and the ends of the two groups of multiple limit rods 53 away from each other extend into the interior of the square tube 52 and are fixedly connected to a connecting plate 55. The opposite sides of the two connecting plates 55 are fixedly connected to a plurality of first springs 56, and the multiple first springs 56 are respectively staggered with the multiple limit rods 53. The ends of the multiple first springs 56 away from the connecting plate 55 are respectively fixedly connected to the inner walls of the two square tubes 52, and the sides of the two connecting plates 55 away from the limit rods 53 are evenly fixedly connected with a plurality of protrusions 57;

[0040] A T-shaped rod 58 is slidably connected to one end of the bottom of the inner side of the two shunt tubes 44. The outside of the two T-shaped rods 58 is movably sleeved with a second spring 59, and the two second springs 59 are respectively arranged inside the two shunt tubes 44. The bottom ends of the two T-shaped rods 58 extend to the outside of the shunt tube 44 and are fixedly connected to the same bottom ring 60. A movable plate 61 is provided inside the two square tubes 52, and the two movable plates 61 are respectively arranged on the side of the two connecting plates 55 away from the limit rod 53. A plurality of push blocks 62 used in conjunction with the protrusion 57 are evenly fixedly connected to the opposite sides of the two movable plates 61. The bottom ends of the two movable plates 61 extend to the outside of the square tube 52 and are fixedly connected to the bottom ring 60.

[0041] When the float type liquid level gauge 3 is flushed as described above, after high-pressure water flows into the two shunt pipes 44, the high-pressure water fills the shunt pipes 44 and is sprayed out through the multiple horizontal nozzles 45, pushing the T-shaped rod 58 downward, causing the first spring 56 to be compressed, so that the two T-shaped rods 58 simultaneously push the bottom ring 60 to move downward synchronously, thereby driving the two movable plates 61 downward through the bottom ring 60, and through the interference between the push blocks 62 on the surfaces of the two movable plates 61 and the protrusions 57 on the surfaces of the two connecting plates 55, the two connecting plates 55 are pushed close to each other and squeeze the multiple second springs 59, so that the multiple limit rods 53 are pushed out of the square rod. At this time, a group of vertical nozzles 43 spray water downward to flush the float and the vertical rod. The float moves downward under the action of the high-pressure water flow, and after the multiple limit rods 53 are extended, the limit rods 53 at the corresponding positions can realize the lifting effect on the protruding ring 54, preventing the float from moving too much downward and affecting the stability of the measuring device.

[0042] After flushing is completed, the water flow releases the pushing effect on the T-shaped rods 58. At this time, the two T-shaped rods 58 respectively drive the bottom ring 60 to move upward and reset under the reset action of the first spring 56, so that the convex ring 54 pushes the two movable plates 61 to move upward synchronously, and the interference of the multiple push blocks 62 on the convex blocks 57 and the connecting plate 55 is released. The connecting plate 55 drives the multiple limit rods 53 to retract into the square tube 52 again under the reset action of the multiple second springs 59, thereby releasing the lifting effect on the convex ring 54. At this time, the float can move freely outside the vertical rod.

[0043] Example 2. The present invention provides a slurry bubble measuring device for a flue gas desulfurization absorption tower, comprising a tower body 1, wherein two mounting shells 2 are symmetrically fixedly connected to the interior of the tower body 1, and float-type liquid level gauges 3 are respectively installed inside the two mounting shells 2. The float-type liquid level gauge 3 includes a first liquid level gauge 31 and a second liquid level gauge 32. The first liquid level gauge 31 is used to measure the true height of the slurry in the tower, and the second liquid level gauge 32 is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism 4 for cleaning the upright rod of the float-type liquid level gauge 3 is provided at one end of the bottom of the two mounting shells 2, and a bubble-removing mechanism 7 for preventing slurry bubbles from affecting the measurement accuracy is provided on the outside of the first liquid level gauge 31, and the bubble-removing mechanism 7 is provided on the outside of the flushing mechanism 4.

[0044] The difference from Example 1 is:

[0045] The inner sides of the two groups of diverter pipes 44 of the flushing mechanism 4 are evenly fixedly connected with a plurality of horizontal spray heads 45 , and the water outlet directions of the plurality of groups of horizontal spray heads 45 are parallel.

[0046] Example 3. The present invention provides a slurry bubble measuring device for a flue gas desulfurization absorption tower, comprising a tower body 1, wherein two mounting shells 2 are symmetrically fixedly connected to the interior of the tower body 1, and float-type liquid level gauges 3 are respectively installed inside the two mounting shells 2. The float-type liquid level gauge 3 includes a first liquid level gauge 31 and a second liquid level gauge 32. The first liquid level gauge 31 is used to measure the true height of the slurry in the tower, and the second liquid level gauge 32 is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism 4 for cleaning the upright rod of the float-type liquid level gauge 3 is provided at one end of the bottom of the two mounting shells 2, and a bubble-removing mechanism 7 for preventing slurry bubbles from affecting the measurement accuracy is provided on the outside of the first liquid level gauge 31, and the bubble-removing mechanism 7 is provided on the outside of the flushing mechanism 4.

[0047] The difference from Example 2 is:

[0048] The screw 72 and the L-shaped plate 73 on the bubble driving mechanism 7 are both made of corrosion-resistant recyclable plastic material, and the cross-section of the guide ring 74 is in the shape of two opposite U shapes.

[0049] Example 4. The present invention provides a slurry bubble measuring device for a flue gas desulfurization absorption tower, comprising a tower body 1, wherein two mounting shells 2 are symmetrically fixedly connected to the interior of the tower body 1, and float-type liquid level gauges 3 are respectively installed inside the two mounting shells 2. The float-type liquid level gauge 3 includes a first liquid level gauge 31 and a second liquid level gauge 32. The first liquid level gauge 31 is used to measure the true height of the slurry in the tower, and the second liquid level gauge 32 is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism 4 for cleaning the upright rod of the float-type liquid level gauge 3 is provided at one end of the bottom of the two mounting shells 2, and a bubble-removing mechanism 7 for preventing slurry bubbles from affecting the measurement accuracy is provided on the outside of the first liquid level gauge 31, and the bubble-removing mechanism 7 is provided on the outside of the flushing mechanism 4.

[0050] The difference from Example 3 is:

[0051] The two T-shaped rods 58 in the auxiliary mechanism 5 are composed of a piston and a round rod fixedly connected to one end of the bottom of the piston, and the L-shaped plate 73 is composed of an arc plate and a threaded block arranged at one end of the top of the arc plate.

[0052] Example 5. The present invention provides a slurry bubble measuring device for a flue gas desulfurization absorption tower, comprising a tower body 1, wherein two mounting shells 2 are symmetrically fixedly connected to the interior of the tower body 1, and float-type liquid level gauges 3 are respectively installed inside the two mounting shells 2. The float-type liquid level gauge 3 includes a first liquid level gauge 31 and a second liquid level gauge 32. The first liquid level gauge 31 is used to measure the true height of the slurry in the tower, and the second liquid level gauge 32 is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism 4 for cleaning the upright rod of the float-type liquid level gauge 3 is provided at one end of the bottom of the two mounting shells 2, and a bubble-removing mechanism 7 for preventing slurry bubbles from affecting the measurement accuracy is provided on the outside of the first liquid level gauge 31, and the bubble-removing mechanism 7 is provided on the outside of the flushing mechanism 4.

[0053] The difference from Example 4 is:

[0054] The present invention is provided with an auxiliary mechanism 5, which can temporarily limit and fix the position of the float while flushing the float-type liquid level gauge 3, preventing the float from moving up and down under the action of the high-pressure water flow, and can effectively ensure the stability of the float-type liquid level gauge 3 when it is flushed by the flushing mechanism 4, avoid the measurement value of the slurry bubble measuring device from being affected, and increase the stability of the measurement value of the slurry bubble measuring device.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A slurry foaming measuring device for a flue gas desulfurization absorption tower, comprising a tower body (1), characterized in that: Two mounting shells (2) are symmetrically fixedly connected inside the tower body (1), and a float type liquid level gauge (3) is installed inside the two mounting shells (2). The float type liquid level gauge (3) includes a first liquid level gauge (31) and a second liquid level gauge (32). The first liquid level gauge (31) is used to measure the true height of the slurry in the tower, and the second liquid level gauge (32) is used to measure the height of the false liquid level after the slurry in the tower bubbles. A flushing mechanism (4) for cleaning the vertical rod of the float type liquid level gauge (3) is provided at one end of the bottom of the two mounting shells (2). A bubble driving mechanism (7) for preventing the slurry from bubbling and affecting the measurement accuracy is provided on the outside of the first liquid level gauge (31), and the bubble driving mechanism (7) is provided on the outside of the flushing mechanism (4); The flushing mechanism (4) comprises an annular tube (41) fixedly connected to one end of the bottom of each of the two mounting shells (2). The two annular tubes (41) are connected via a tee tube (42). One end of the tee tube (42) extends to the outside of the tower body (1) for connecting to an external water supply mechanism. Three vertical nozzles (43) are evenly arranged on the inner sides of the two annular tubes (41). The three vertical nozzles (43) are fixedly connected to the annular tubes (41) via elbows, and the water outlet direction of the three vertical nozzles (43) is vertically downward. The bottom ends of the two annular tubes (41) are symmetrically fixedly connected to a diversion tube (44). The inner sides of the two groups of diversion tubes (44) are evenly fixedly connected to a plurality of horizontal nozzles (45), and the water outlet direction of the plurality of groups of horizontal nozzles (45) is parallel.

2. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 1, characterized in that: One side of the tower body (1) is fixedly connected to an overflow pipe (9), a top end of the inner side of the tower body (1) is provided with a spray structure (10) for circulating slurry, and the spray structure (10) is arranged above the two mounting shells (2), a side of the tower body (1) away from the overflow pipe (9) is fixedly connected to a return pipe (11) used in conjunction with the spray structure (10), and the cross-section shape of the return pipe (11) is a side U-shape, a circulation pump (12) is installed at a corner position at one end of the bottom of the return pipe (11), and a connecting pipe (13) for adding a defoaming agent into the return pipe (11) is provided between the circulating pump (12) and the tower body (1), and the connecting pipe (13) is fixedly connected to the return pipe (11).

3. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 1, characterized in that: The outside of the two groups of shunt pipes (44) are both provided with auxiliary mechanisms (5) for ensuring the stability of the float type liquid level gauge (3) during flushing; the auxiliary mechanism (5) includes a mounting ring (51) fixedly sleeved on the outside of the two shunt pipes (44), a square tube (52) is symmetrically fixedly connected to one end of the bottom of the mounting ring (51), and the two square tubes (52) are arranged between the two shunt pipes (44), and the opposite sides of the two square tubes (52) are respectively and evenly slidably connected with a plurality of limit rods (53), and the outer side of the float of the float type liquid level gauge (3) is fixedly sleeved with a plurality of limit rods (53) that cooperate with the limit rods (53). The convex ring (54) is used, and the ends of the two groups of multiple limiting rods (53) away from each other extend to the inside of the square tube (52) and are fixedly connected to a connecting plate (55). The opposite sides of the two connecting plates (55) are fixedly connected to multiple first springs (56), and the multiple first springs (56) are respectively arranged in an interlaced manner with the multiple limiting rods (53). The ends of the multiple first springs (56) away from the connecting plate (55) are respectively fixedly connected to the inner walls of the two square tubes (52), and the sides of the two connecting plates (55) away from the limiting rods (53) are evenly fixedly connected to multiple protrusions (57).

4. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 3, characterized in that: The bottom ends of the inner sides of the two shunt tubes (44) are slidably connected to a T-shaped rod (58), the outsides of the two T-shaped rods (58) are movably sleeved with a second spring (59), and the two second springs (59) are respectively arranged inside the two shunt tubes (44), the bottom ends of the two T-shaped rods (58) extend to the outside of the shunt tube (44) and are fixedly connected to the same bottom ring (60), the insides of the two square tubes (52) are provided with a movable plate (61), and the two movable plates (61) are respectively arranged on the side of the two connecting plates (55) away from the limit rod (53), and the opposite sides of the two movable plates (61) are respectively and evenly fixedly connected with a plurality of push blocks (62) used in conjunction with the protrusions (57), and the bottom ends of the two movable plates (61) extend to the outside of the square tube (52) and are fixedly connected to the bottom ring (60).

5. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 1, characterized in that: The bubble driving mechanism (7) comprises a motor (71) fixedly mounted inside one of the mounting shells (2); one end of the output shaft of the motor (71) is fixedly connected to a screw (72); the external thread of the screw (72) is connected to an L-shaped plate (73); one end of the bottom of the L-shaped plate (73) is fixedly connected to a guide ring (74); the inner side of the guide ring (74) is rotatably connected to a circular ring (75); one end of the bottom of the circular ring (75) is fixedly connected to a bubble driving ring (76); and a plurality of spikes (77) for puncturing bubbles are evenly fixedly connected to the inner side of the bubble driving ring (76).

6. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 5, characterized in that: A plurality of fan blades (78) are evenly fixed on the outside of the guide ring (74), and the plurality of fan blades (78) are all arc-shaped. A mounting seat (79) is provided on the outside of the guide ring (74), and the mounting seat (79) and the guide ring (74) are of an integrated design. An air supply pipe (80) for connecting to an external air compressor is fixedly installed inside the mounting seat (79), and one end of the air supply pipe (80) away from the mounting seat (79) extends to the outside of the tower body (1), and one end of the bottom of the air supply pipe (80) extends to the bottom of the mounting seat (79) and is fixedly connected to an air nozzle (81), and the air outlet direction of the air nozzle (81) is inclined downward, and the final position is the recessed position of the fan blade (78).

7. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 5, characterized in that: The two T-shaped rods (58) are each composed of a piston and a round rod fixedly connected to one end of the bottom of the piston, and the L-shaped plate (73) is composed of an arc plate and a threaded block arranged at one end of the top of the arc plate.

8. The slurry foaming measuring device for a flue gas desulfurization absorption tower according to claim 5, characterized in that: The screw (72) and the L-shaped plate (73) are both made of corrosion-resistant recyclable plastic material, and the cross-sectional shape of the guide ring (74) is two opposite U-shapes.

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