PH measurement sampling device capable of preventing erosive wear of electrode
By designing a measurement sampling pipeline including main through pipe, introduction pipe, lead-out pipe and test pipe, using gravity shunt and disturbance components, the problem of electrode wear when the slurry flow rate is large, and the timeliness and accuracy of PH measurement is improved extends the service life of the instrument.
Patent Information
- Application Number
- CN202420942141.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When the slurry flow rate of the existing gravity slurry sampling device is large, the electrode is easily impacted by solid particles, resulting in frequent wear of the electrode, which reduces the availability and reliability of the instrument.
A measurement sampling pipe including a main through pipe, an introduction tube, an outlet tube and a test tube is designed. The slurry is introduced into the main through pipe through the introduction tube, and the solid particles are discharged through the outlet tube by gravity to reduce collisions against the electrodes. The disturbance of the slurry is increased by providing a perturbation assembly on the outside of the electrode, preventing clogging and scaling.
It effectively reduces the wear frequency of the electrode, improves the timeliness and accuracy of PH measurement, reduces the frequency of the instrument replacement, and increases the availability and reliability of the instrument.
Smart Images
Figure CN222461095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of desulfurization slurry pH measuring devices, in particular to a pH measuring sampling device capable of preventing electrode scouring and wear. Background Art
[0002] The pH parameter of the slurry in the gypsum wet desulfurization system of the power plant is the key basis for the operation of the slurry control. The existing gravity slurry sampling device is usually connected to the desulfurization tower, and the pH meter secondary table is used to immerse its electrode in the slurry for measurement. When the slurry flow rate is large, the measuring medium is violently disturbed, and a large amount of solid particles in the slurry hit the electrode under the violent disturbance force, resulting in large wear of the electrode glass, which makes the electrode need to be replaced frequently. At the same time, frequent replacement of electrodes will increase the probability of damage to the non-detachable terminal block inside the pH meter secondary table, reducing the availability and reliability of the instrument. To this end, we proposed a pH measurement sampling device that prevents electrode erosion and wear to solve the above problems. Utility Model Content
[0003] The utility model aims to provide a pH measurement sampling device which can prevent electrode scouring and wear, so as to solve the problem that when the slurry flow rate is high, a large amount of solid particles in the slurry hit the electrode, resulting in large wear of the electrode glass.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pH measurement sampling device that prevents electrode erosion and wear, including a measurement sampling pipeline connected to a desulfurization tower, the measurement sampling pipeline including a main through pipe, an inlet pipe, an outlet pipe and a test tube, one end of the inlet pipe, the outlet pipe and the test tube are all connected to the main through pipe, and the installation positions are the test tube, the outlet pipe and the inlet pipe from top to bottom, the other end of the inlet pipe is connected to the desulfurization tower, a valve is provided in the inlet pipe, a sampling port is provided at the upper end of the main through pipe, a flange butt pipe is provided on the outer wall of the test tube, the flange butt pipe is fixedly connected to a flange, a threaded hole is provided in the center of the flange, an electrode is provided in the threaded hole, the electrode is connected to a pH meter, and a disturbance component is provided on the outside of the electrode.
[0005] The beneficial effects of this program are:
[0006] 1. During the measurement process, open the valve inside the inlet pipe, and let the slurry flow from the desulfurization tower into the main pipe through the inlet pipe. The slurry forms a diversion under its own gravity. A large amount of solid particles are discharged with the slurry through the outlet pipe, while a small amount of solid particles enter the test tube with the slurry for testing, which reduces the collision of solid particles on the electrode and reduces the wear on the electrode.
[0007] 2. Traditional measurement medium sampling relies on the gravity flow of the slurry. The slurry flow rate is limited by the liquid level of the desulfurization tower and the ratio of the inlet and outlet diameters of the sampling tube. The slurry flow rate fluctuates greatly, and the timeliness of the pH measurement value is difficult to control. In this case, since the test tube is located above the outlet pipe, the slurry flow rate entering the test tube fluctuates less, and the timeliness of the pH measurement value is better controlled.
[0008] 3. By setting a disturbance component on the outside of the electrode to increase the disturbance of the slurry in the test tube, it can not only effectively prevent blockage in the measuring tube, but also prevent scaling on the outside of the electrode from affecting the measurement results.
[0009] Furthermore, the disturbance component includes a hollow rotor and rotor blades. The hollow rotor is sleeved on the outside of the electrode and docked with the threaded hole. A plurality of rotor blades are fixed on the outside of the hollow rotor.
[0010] Furthermore, the pipe sections of the outlet pipe and the test pipe are located in the same plane and on the same side of the main through pipe, and the pipe section of the inlet pipe forms an angle of 90° with the pipe sections of the outlet pipe and the test pipe.
[0011] Furthermore, the other ends of the lead-out tube and the test tube are both connected with a bent tube.
[0012] Furthermore, the butt flange pipe is fixed to the test pipe by welding.
[0013] Furthermore, the flange and the flange butt pipe are fixed with bolts.
[0014] This solution also has the following effects:
[0015] 1. By threading the hollow rotor to the threaded hole at the upper end of the flange, the stability of the disturbance component is increased, and the disturbance component is prevented from hitting the electrode under the disturbance of the slurry, causing wear of the electrode.
[0016] 2. By setting the pipe cross-section of the inlet pipe to a 90° angle with the pipe cross-section of the outlet pipe and the test pipe, when the valve of the inlet pipe is opened, the slurry enters the main pipe from the inlet pipe and hits the inner wall of the main pipe, thereby preventing the slurry from being directly discharged through the outlet pipe. When the slurry level in the main pipe tends to be stable, the slurry discharged from the inlet pipe hits the inner wall of the main pipe to form a disturbing force, thereby disturbing the solid particles deposited at the bottom of the main pipe to float up and finally be discharged through the outlet pipe.
[0017] 3. By connecting the outlet pipe with the other end of the test pipe through a bend pipe, splashing of the discharged slurry when it contacts the ditch can be reduced, thereby reducing pollution to the environment.
[0018] 4. Bolts are used to fix the flanges to the flange butt pipes, which makes it easier for the staff to replace the electrodes and clean the disturbance components. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the measurement sampling pipeline of Example 1 of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the disturbance component of Example 2 of the utility model. DETAILED DESCRIPTION
[0021] The following is further described in detail through specific implementation methods:
[0022] The reference numerals in the drawings of the specification include: desulfurization tower 1, main through pipe 2, inlet pipe 3, outlet pipe 4, test pipe 5, valve 6, sampling port 7, flange connecting pipe 8, flange 9, electrode 10, pH meter 11, hollow impeller 12, impeller blades 13.
[0023] Example 1
[0024] Embodiment 1 is basically as attached Figure 1 As shown, Figure 1 A pH measurement sampling device for preventing electrode 10 from being eroded and worn as shown, comprises a measurement sampling pipeline connected to a desulfurization tower 1, the measurement sampling pipeline comprises a main through pipe 2, an inlet pipe 3, an outlet pipe 4 and a test tube 5, the specification of the main through pipe 2 is Φ159*5mm, and both ends are closed, the specification of the inlet pipe 3 is Φ40*3mm, the specifications of the outlet pipe 4 and the test tube 5 are Φ80*3mm, one end of the inlet pipe 3, the outlet pipe 4 and the test tube 5 are all connected to the main through pipe 2, and the installation positions are, from top to bottom, the test tube 5, the outlet pipe 4, the inlet pipe 3, and the test tube 5. The distances at the upper end of the main through pipe 2 are 30cm, 50cm, and 90cm respectively. The other end of the introduction pipe 3 is connected to the desulfurization tower 1, and the angle between the introduction pipe 3 and the ground is 45°. A valve 6 is provided in the introduction pipe 3. A sampling port 7 is provided at the upper end of the main through pipe 2. A flange butt pipe 8 is welded vertically upward to the horizontal section of the test pipe 5. The height of the flange butt pipe 8 is set to 15cm. The flange butt pipe 8 is bolted and connected to a flange 9. A threaded hole is provided in the center of the flange 9. An electrode 10 is provided in the threaded hole. The electrode 10 is connected to a pH meter 11. A disturbance component is provided on the outside of the electrode 10.
[0025] The specific implementation process is as follows:
[0026] Embodiment 1 is basically as attached Figure 1 As shown, Figure 1The PH measurement sampling device for preventing electrode erosion and wear shown in the figure comprises a measurement sampling pipeline connected to a desulfurization tower 1, the measurement sampling pipeline comprises a main through pipe 2, an inlet pipe 3, an outlet pipe 4 and a test pipe 5, the specification of the main through pipe 2 is Φ159*5mm, and both ends are closed, the specification of the inlet pipe 3 is Φ40*3mm, the specifications of the outlet pipe 4 and the test pipe 5 are Φ80*3mm, one end of the inlet pipe 3, the outlet pipe 4 and the test pipe 5 are all connected to the main through pipe 2, and the installation positions are the test pipe 5, the outlet pipe 4, the inlet pipe 3 from top to bottom, and connected to the main through pipe 2. The distances at the upper end of the through pipe 2 are 30cm, 50cm, and 90cm respectively. The other end of the introduction pipe 3 is connected to the desulfurization tower 1, and the angle between the introduction pipe 3 and the ground is 45°. A valve 6 is provided in the introduction pipe 3. A sampling port 7 is provided at the upper end of the main through pipe 2. A flange butt pipe 8 is welded vertically upward to the horizontal section of the test pipe 5. The height of the flange butt pipe 8 is set to 15cm. The flange butt pipe 8 is bolted and connected to a flange 9. A threaded hole is provided in the center of the flange 9. An electrode 10 is provided in the threaded hole. The electrode 10 is connected to a pH meter 11. A disturbance component is provided on the outside of the electrode 10.
[0027] During the test, the valve 6 in the inlet pipe 3 is opened to discharge the slurry from the desulfurization tower 1 to the main pipe 2. When the slurry enters the main pipe 2, the liquid level rises. When the liquid level passes through the outlet, the slurry is discharged from the outlet. Since the liquid level in the desulfurization tower 1 is high and the hydraulic pressure is large, the outlet pipe 4 cannot discharge the slurry in time, causing the liquid level to continue to rise. When the liquid level rises to the test pipe 5, the slurry is discharged from the test pipe 5 at the same time. At this time, the liquid level is higher than the test pipe 5, and the slurry introduction amount is equal to the extraction amount to achieve dynamic equilibrium, and the slurry liquid level tends to be flat. The test tube 5 has a small content of liquid solid particles and a small fluctuation of the slurry flow rate. At the same time, the wear of the electrode 10 is reduced, the replacement frequency of the electrode 10 is reduced, and the availability and reliability of the pH meter 11 are increased.
[0028] Example 2
[0029] like Figure 2 The disturbance assembly shown also includes a hollow rotor 12 and rotor blades 13. A plurality of rotor blades 13 are fixed to the outside of the hollow rotor 12. The hollow diameter of the hollow rotor 12 is set to 20 mm, the outer diameter of the rotor is 70 mm, and the height of the rotor blades 13 is set to 40 mm. The electrode 10 is tightly inserted into the middle of the hollow rotor 12, and the hollow rotor 12 is threadedly connected to the threaded hole. During the test, the slurry flowing into the test tube 5 will push the rotor blades 13 to rotate, thereby preventing scaling of the outer wall of the electrode 10 and preventing the test tube 5 from being blocked.
[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A pH measurement sampling device that prevents electrode erosion and wear, characterized in that: The measuring sampling pipeline connected with the desulfurization tower includes a main through pipe, an inlet pipe, an outlet pipe and a test pipe. One ends of the inlet pipe, the outlet pipe and the test pipe are all connected with the main through pipe, and the installation positions are the test pipe, the outlet pipe and the inlet pipe from top to bottom. The other end of the inlet pipe is connected with the desulfurization tower. A valve is arranged in the inlet pipe. A sampling port is arranged at the upper end of the main through pipe. A flange butt pipe is arranged on the outer wall of the test pipe. The flange butt pipe is fixedly connected with a flange. A threaded hole is arranged in the center of the flange. An electrode is arranged in the threaded hole. The electrode is connected with a pH meter. A disturbance component is arranged on the outside of the electrode.
2. A pH measurement sampling device for preventing electrode erosion and wear according to claim 1, characterized in that: The disturbance component comprises a hollow rotor and rotor blades. The hollow rotor is sleeved on the outside of the electrode and connected with the threaded hole. A plurality of rotor blades are fixed on the outside of the hollow rotor.
3. A pH measurement sampling device for preventing electrode erosion and wear according to claim 1, characterized in that: The pipe sections of the outlet pipe and the test pipe are located in the same plane and on the same side of the main through pipe, and the pipe section of the inlet pipe forms an angle of 90° with the pipe sections of the outlet pipe and the test pipe.
4. A pH measurement sampling device for preventing electrode erosion and wear according to claim 1, characterized in that: The other ends of the lead-out pipe and the test pipe are both connected with a bent pipe.
5. A pH measurement sampling device for preventing electrode erosion and wear according to claim 1, characterized in that: The butt flange pipe is fixed to the test pipe by welding.
6. A pH measurement sampling device for preventing electrode erosion and wear according to claim 1, characterized in that: The flanges and flange butt pipes are fixed with bolts.