Device for accurately measuring density of desulfurizing absorption tower

Abstract

The utility model discloses a device for accurately measuring the density of a desulfurizing absorption tower, and relates to the field of power equipment. The device comprises a vertical pipe communicated with a slurry conveying pipeline, the vertical pipe is communicated with an inclined pipe inclining upwards, a control valve and a top cover are arranged at the two ends of the inclined pipe respectively, a densimeter and the top cover are fixedly installed, and a probe of the densimeter extends into the inclined pipe; the upper end and the lower end of the outer side wall of the inclined pipe are communicated with a water inlet pipe and a water outlet pipe respectively, the water inlet pipe and the water outlet pipe are communicated with a water inlet valve and a water outlet pulse valve respectively, and the water outlet pipe is further communicated with an air inlet valve. The inclined tube cleaning device has the beneficial effects that various cleaning modes are applied to the interior of the inclined tube after the inclined tube is closed, so that the cleaning effect on the inclined tube is improved, the problem of slurry accumulation is solved, and the measurement accuracy of the densimeter is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric power equipment, relates to the field of desulfurization tower, and specifically relates to a device for accurately measuring the density of a desulfurization absorption tower. BACKGROUND

[0002] In the process of electric power production, especially coal-fired power generation, harmful gases such as sulfur dioxide are generated. As one of the core equipment for reducing sulfur dioxide emissions, the internal slurry density of the desulfurization absorption tower plays a crucial role in improving the desulfurization efficiency. Specifically, when the slurry density is too low, the ability of the desulfurizer to absorb sulfur dioxide will be weakened, thereby affecting the overall desulfurization effect. Conversely, if the slurry density is too high, it may cause the desulfurizer to be wrapped, which will also weaken the desulfurization efficiency. Therefore, accurate measurement and reasonable control of the slurry density are crucial for optimizing the desulfurization effect. However, in actual operation, due to the tendency of slurry to accumulate in the pipeline, when new slurry flows into the pipeline, it is often difficult to be accurately detected by the densimeter, thereby interfering with the measurement results of the density. SUMMARY

[0003] The utility model discloses in order to solve the technical problem that slurry accumulates in the pipeline and affects the detection results of the densimeter, provides a device for accurately measuring the density of a desulfurization absorption tower. By applying various cleaning methods to the inclined pipe after closing it, the cleaning effect of the inclined pipe is improved to eliminate the problem of slurry accumulation and ensure the accuracy of the densimeter measurement.

[0004] The utility model discloses a technical scheme: provide a kind of device for accurately measuring the density of a desulfurization absorption tower, it includes with the standpipe that slurry is sent to pipeline, the standpipe is connected with the inclined pipe that is inclined upward, two ends of inclined pipe are respectively provided with control valve and top cover, and densimeter is fixedly installed with top cover, and the probe of densimeter is inserted into inclined pipe;Water inlet pipe and water outlet pipe are respectively connected with the upper and lower ends of the outer wall of inclined pipe, water inlet valve and water outlet pulse valve are respectively connected with water inlet pipe and water outlet pipe, and air inlet valve is also connected with water outlet pipe.

[0005] After slurry enters the inclined pipe through the standpipe, the density of slurry is detected by the densimeter. The upward inclination of the inclined pipe allows the particulate matter in the slurry to slide down along the pipe wall, thereby avoiding sedimentation from affecting the detection results of the densimeter. After a single sampling is completed, the control valve is closed to maintain a closed space in the inclined pipe, then water is injected into the inclined pipe through the water inlet valve to clean the inclined pipe. After a certain amount of water is stored in the inclined pipe, air is filled into the inclined pipe to stir the water flow and clean the pipe wall, thereby improving the cleaning effect. When the water flow in the inclined pipe is discharged by the water outlet pulse valve, the pulse water discharge process causes the water flow in the inclined pipe to stop and start suddenly, generating a water hammer effect. This allows the water flow to impact and clean the pipe wall, thereby improving the cleaning effect. When detection is performed again, the storage of slurry in the inclined pipe is avoided to ensure the accuracy of the measurement results.

[0006] Further optimize the technical scheme, the inclined pipe includes inclined pipe table and sampling pipe, the inclined pipe table is connected with the vertical pipe, and the control valve is arranged between the inclined pipe table and the sampling pipe, and is assembled with the inclined pipe table and the sampling pipe by means of flange;The water inlet pipe and the water outlet pipe are connected with the sampling pipe, the sampling pipe is fixedly assembled with the top cover by means of flange, and the probe of the densimeter extends into the sampling pipe.

[0007] The inclined pipe is composed of the inclined pipe table and the sampling pipe, the control valve is assembled between the inclined pipe table and the sampling pipe through the flange, the inclined pipe table is connected with the vertical pipe, and the top cover is also assembled with the sampling pipe through the flange, so that the structure is simple, and disassembly and maintenance are convenient.

[0008] Further optimize the technical scheme, the control valve is an electromagnetic valve.

[0009] The control valve can improve the automation effect by selecting the electromagnetic valve, and improve the use efficiency.

[0010] Further optimize the technical scheme, the vertical pipe is connected with the slurry pipeline by means of the flange, and the butt joint is arranged on the outer side wall of the vertical pipe, the inclined pipe table is inserted with the butt joint, and is welded and fixed with the vertical pipe.

[0011] The butt joint arranged on the vertical pipe provides an assembly point for the inclined pipe table, and the welding fixation improves the firmness of assembly, and guarantees the reliability of use.

[0012] Further optimize the technical scheme, the water outlet pipe is connected with a tee joint, and the water outlet pulse valve and the air inlet valve are connected with the tee joint.

[0013] The tee joint facilitates the assembly of the water outlet pulse valve and the air inlet valve with the water outlet pipe, facilitates independent control, and improves the use flexibility.

[0014] Further optimize the technical scheme, the sampling pipe is provided with an inner liner pipe, and the water inlet pipe and the water outlet pipe are connected with the inner liner pipe.

[0015] The inner liner pipe can strengthen the strength of the sampling pipe, and guarantee the use reliability.

[0016] Further optimize the technical scheme, the inner liner pipe is made of polytetrafluoroethylene material.

[0017] The inner liner pipe made of polytetrafluoroethylene material can reduce the adhesion of slurry on the pipe wall of the inner liner pipe, reduce the cleaning strength, facilitate cleaning, and guarantee the accuracy of density detection.

[0018] The beneficial effects of the utility model lie in:

[0019] 1. By closing the control valve, the sampling tube of the inclined tube is made into a closed space. Then, water is flushed and drained into the sampling tube to form a water flow circulation, which cleans the inside of the sampling tube. During the drainage process, the pulse drainage of the water outlet pulse valve causes the water flow in the sampling tube to stop and start suddenly, generating a water hammer effect. This allows the water flow to impact and clean the tube wall, improving the cleaning effect and preventing the accumulation of slurry in the sampling tube from affecting the measurement results, thus ensuring the accuracy of the measurement.

[0020] 2. After injecting a certain amount of water into the sampling tube, air can be injected into the sampling tube through the air inlet valve to generate bubbles that agitate the water flow, thereby flushing and cleaning the tube wall, improving the cleaning effect of the sampling tube, and further ensuring the accuracy of the measurement.

[0021] 3. The upward tilt of the sampling tube allows particles in the slurry to slide down along the tube wall, thus avoiding deposition that could affect the density meter's detection results. At the same time, the inner lining tube on the sampling tube enhances the tube's strength while reducing slurry adhesion to the inner lining tube, thereby reducing cleaning intensity and improving cleaning efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the device for accurately measuring the density of the desulfurization absorption tower in this embodiment;

[0023] Figure 2 This is a schematic diagram of the riser structure in this embodiment;

[0024] Figure 3 This is a schematic diagram of the inclined tube in this embodiment;

[0025] Figure 4 This is a schematic diagram of the sampling tube in this embodiment.

[0026] In the diagram, 1. Density meter; 2. Riser; 201. Connecting port; 3. Inclined tube; 301. Inclined tube platform; 302. Sampling tube; 3021. Liner tube; 4. Control valve; 5. Top cover; 6. Inlet pipe; 601. Inlet valve; 7. Outlet pipe; 701. Outlet pulse valve; 702. Air inlet valve; 8. Tee. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Please see the appendix Figure 1The utility model provides a device for accurately measuring the density of a desulfurization absorption tower, comprising a vertical pipe 2 connected to a slurry conveying pipeline, flanges provided at both ends of the vertical pipe 2, the vertical pipe 2 being connected to the slurry conveying pipeline through the flanges, an upwardly inclined inclined pipe 3 provided on the vertical pipe 2, control valves 4 and a top cover 5 provided at both ends of the inclined pipe 3, wherein a density meter 1 is mounted on the top cover 5, the probe of the density meter 1 extending into the inclined pipe 3, slurry entering the vertical pipe 2 from the slurry conveying pipeline, the slurry entering the inclined pipe 3 after the control valves 4 on the inclined pipe 3 are opened, so that the density meter 1 samples and detects the density of the slurry;

[0029] Please refer to the accompanying drawings Figures 1-3 , the inclined pipe 3 comprises an inclined pipe table 301 and a sampling pipe 302, the inclined pipe table 301 being connected to the vertical pipe 2, a butt joint 201 being formed on the vertical pipe 2, the inclined pipe table 301 being inserted into the butt joint 201 and being fixedly connected to the vertical pipe 2 through welding, a flange being provided at the other end of the inclined pipe table 301, flanges also being provided at both ends of the sampling pipe 302, and the control valves 4 being provided between the sampling pipe 302 and the inclined pipe table 301, the ends of the control valves 4 being fixedly connected to the inclined pipe table 301 and the sampling pipe 302 through the flanges, so that the control valves 4 are more convenient to disassemble, maintain and assemble, and the control valves 4 can be automatically opened and closed by selecting solenoid valves, thereby realizing automatic control;

[0030] Please refer to the accompanying drawings Figure 4 , the sampling pipe 302 is sleeved with an inner liner 3021, the inner liner 3021 enhancing the use strength of the sampling pipe 302, and the inner liner 3021 being made of polytetrafluoroethylene, the slurry reducing wall sticking and adhesion after entering the inner liner 3021 and enhancing use performance, and the upper and lower parts of the outer wall of the sampling pipe 302 being respectively connected to water inlet pipes 6 and water outlet pipes 7, the water inlet pipes 6 and the water outlet pipes 7 being respectively connected to the inner liner 3021, the water inlet pipes 6 and the water outlet pipes 7 being respectively connected to water inlet valves 601 and water outlet pulse valves 701, and the water outlet pipes 7 being further connected to air inlet valves 702, the water outlet pulse valves 701 and the air inlet valves 702 being assembled through the three-way pipes 8, the control valves 4 being closed before the slurry is sampled, so that the sampling pipe 302 becomes a closed space, the water inlet valves 601 are then connected to external water sources, and water flows into the sampling pipe 302, the water flows flushing the inner liner 3021, so that the slurry impurities are flushed off the inner liner 3021 and discharged through the water outlet pipes 7;

[0031] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 3 , the accompanying drawings Figure 4, by the water inlet pipe 6 to the sampling pipe 302 to fill a certain amount of water, by the air inlet valve 702 on the water outlet pipe 7 to the sampling pipe 302 to fill the air flow, the water filled in the inner lining pipe 3021 produces bubbles, so as to enhance the cleaning effect of the pipe wall, and after the pipe wall water inlet valve 601 and the air inlet valve 702, the water in the sampling pipe 302 is discharged outward by the water outlet pulse valve 701, because the water outlet pulse valve 701 is pulse water outlet, which will cause the water flow in the sampling pipe 302 to stop and start suddenly to produce water hammer effect, by using the water hammer effect to make the water flow impact cleaning, further improve the cleaning effect of the sampling pipe 302, and after cleaning, open the control valve 4 to make the slurry flow into the sampling pipe 302, so that the densimeter 1 detects it, because the sampling pipe 302 is clean, there is no slurry residue, which ensures the accuracy of the density sampling detection, so as to accurately measure the density of the desulfurization absorption tower;

[0032] The working principle of the accurate measurement of the desulfurization absorption tower density device is: when measuring the density of the slurry, close the controller, keep the sampling pipe 302 closed, then connect the water inlet valve 601 with the external water source, flush the inner tube wall of the inner lining pipe 3021 in the sampling pipe 302 by filling water into the sampling pipe 302, and discharge the water flow through the water outlet pulse valve 701, so as to preliminarily flush the inner lining pipe 3021. And by filling a certain amount of water into the inner lining pipe 3021, the air inlet valve 702 fills the air into the inner lining pipe 3021, the air flow moves upward from the bottom of the inner lining pipe 3021, and produces bubbles to stir the flowability of the water flow, so as to flush and clean the pipe wall, and after discharging the water flow, ensure the cleaning effect of the sampling pipe 302. When the water outlet pulse valve 701 discharges the cleaning liquid in the inner lining pipe 3021, because of the pulse discharge of the water outlet pulse valve 701, the water flow in the inner lining pipe 3021 stops and starts suddenly to produce water hammer effect, so as to impact cleaning of the pipe wall by the water flow, further improve the cleaning effect. After the cleaning of the sampling pipe 302 is completed, open the control valve 4 to make the slurry flow into the sampling pipe 302 and contact the probe of the densimeter 1, detect the density of the slurry, because the sampling pipe 302 is upwardly inclined, the particles in the slurry can slide down along the pipe wall, so as to avoid the deposition to affect the detection result of the densimeter 1, at the same time, the inner lining pipe 3021 on the sampling pipe 302 reduces the adhesion of the slurry, reduces the cleaning intensity, avoids the accumulation of the slurry in the sampling pipe 302 to affect the detection result, and ensures the accuracy of the density measurement.

Claims

1. A device for accurately measuring the density of a desulfurization absorption tower, comprising a hydrometer (1), characterized in that: It also includes a riser (2) connected to the slurry pipeline, and an upward inclined pipe (3) connected to the riser (2). A control valve (4) and a top cover (5) are respectively installed at both ends of the inclined pipe (3), and the density meter (1) is fixedly installed with the top cover (5). The probe of the density meter (1) extends into the inclined pipe (3). The upper and lower ends of the outer wall of the inclined pipe (3) are respectively connected to the water inlet pipe (6) and the water outlet pipe (7). The water inlet pipe (6) and the water outlet pipe (7) are respectively connected to the water inlet valve (601) and the water outlet pulse valve (701), and the water outlet pipe (7) is also connected to the air inlet valve (702).

2. The device for accurately measuring the density of a desulfurization absorption tower according to claim 1, characterized in that: The inclined tube (3) includes an inclined tube platform (301) and a sampling tube (302). The inclined tube platform (301) is connected to the riser (2), and the control valve (4) is located between the inclined tube platform (301) and the sampling tube (302), and is assembled with the inclined tube platform (301) and the sampling tube (302) by means of a flange. The inlet pipe (6) and the outlet pipe (7) are both connected to the sampling tube (302). The sampling tube (302) is fixedly assembled with the top cover (5) by means of a flange, and the probe of the density meter (1) extends into the sampling tube (302).

3. The device for accurately measuring the density of a desulfurization absorption tower according to claim 2, characterized in that: The control valve (4) is a solenoid valve.

4. The device for accurately measuring the density of a desulfurization absorption tower according to claim 2, characterized in that: The riser (2) is connected to the slurry pipeline by means of a flange, and a connecting interface (201) is provided on the outer wall of the riser (2). The inclined pipe platform (301) is inserted into the connecting interface (201) and welded to the riser (2).

5. The device for accurately measuring the density of a desulfurization absorption tower according to claim 2, characterized in that: The water outlet pipe (7) is connected to a tee (8), and the water outlet pulse valve (701) and the air inlet valve (702) are both connected to the tee (8).

6. The device for accurately measuring the density of a desulfurization absorption tower according to claim 2, characterized in that: The sampling tube (302) is fitted with an inner liner tube (3021), and the water inlet pipe (6) and the water outlet pipe (7) are both connected to the inner liner tube (3021).

7. The device for accurately measuring the density of a desulfurization absorption tower according to claim 6, characterized in that: The inner lining tube (3021) is made of polytetrafluoroethylene.

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