Measure the device of serum density and potential of hydrogen
Technical field
The present invention relates to the environment protection desulphurization field, relate in particular to a kind of density of gypsum slurries in the desulfuration absorbing tower and method of pH value measured.
Background technology
In the environment protection desulphurization industry,, to monitor in real time the density and the pH value of gypsum slurries with densitometer and pH meter usually in order to monitor the desulfurization situation of gypsum slurries.At present, the density of the domestic gypsum slurries that is used for measuring desulphurization system and the method for pH value are: the vertical branch's pipe that densitometer and pH meter all is arranged on the female pipe in gypsum slurries extraction pump place.
Yet on the one hand, because the influence of gypsum slurries extraction pump, the flow velocity of gypsum slurries in mother's pipe and vertical branch's pipe is unstable, thereby causes the difficult stable control of flow velocity of gypsum slurries.And; Because the flow velocity of gypsum slurries can not be stablized control and gypsum slurries has abrasiveness and is prone to the property stopped up; Gypsum slurries wearing and tearing to densitometer and pH meter in process of flowing are very big; And if, thereby shortened the serviceable life of densitometer and pH meter for the reduction flow velocity that reduces wear makes densitometer be easy to obstruction again.On the other hand, because the pipe in the pipeline is pressed big and gypsum slurries is swiftly flowing, thereby is difficult to make the flow speed stability of gypsum slurries be controlled in the claimed range through manual shift, like this, just increased workload in pipeline to field device maintenance.
Therefore, be necessary to provide a kind of density of improved measurement slurries and the device of potential of hydrogen to overcome above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide a kind of device of measuring serum density and potential of hydrogen, can prolong the serviceable life of densitometer and pH meter, reduce the workload of field device maintenance.
To achieve these goals, the invention provides a kind of device of measuring serum density and potential of hydrogen, be used for the slurries in the absorption tower are carried out the measurement of density and soda acid.The device of said measurement serum density and potential of hydrogen comprises takes into account second pH meter to empty stopple coupon assembly, densitometer, first potential of hydrogen; Said empty stopple coupon assembly is comprised first arm, second arm, the 3rd arm, the 4th arm and the 5th arm; Said first arm is inclined upwardly and the lower end of said first arm is communicated with the lower end on said absorption tower; Said first pH meter inserts said first arm from the upper end of said first arm; Said second arm is being communicated with said first arm of level; The free end of said second arm inserts extraneous wash tub pipe, and the lower end of said the 3rd arm is communicated with said first arm, and the upper end of said the 3rd arm is communicated with said densitometric lower end; Said densitometric upper end is communicated with the lower end of said the 4th arm; Said second pH meter inserts said the 4th arm from the upper end of said the 4th arm, and said the 5th arm is vertical being communicated with said the 4th arm, and said the 3rd arm, said the 4th arm and said densitometric center line are positioned at same straight line and parallel with the tower wall on said absorption tower.
Preferably; The device of said measurement serum density and potential of hydrogen also comprises butterfly valve; Said butterfly valve is installed on said first arm between said second arm and the said absorption tower, like this can be fast with empty sampling assemble is isolated, so that repair and maintenance.
Preferably; The first big or small X-over is installed between the upper end of said densitometric lower end and said the 3rd arm; The second big or small X-over is installed between the lower end of said densitometric upper end and said the 4th arm; Like this, when the densitometer type selecting, can reduce one-level liner latus rectum size, can reduce purchase cost greatly.
Preferably, between the said densitometric lower end and the said first big or small X-over first isolation ball valve is installed, between the said densitometric upper end and the said second big or small X-over second isolation ball valve is installed, so that adjustment advances to starch flow.
Preferably, the angle of the said tower wall on said first arm and said absorption tower is 45 degree.
Preferably, the junction of said densitometer and said the 3rd arm at the bottom of the said tower on said absorption tower about 2.5 meters makes slurries from the requirement to flowing out automatically the empty sampling assemble to guarantee that the suitable pressure that utilizes absorption tower self liquid level to produce satisfies.
Preferably, at the bottom of the tower on the said absorption tower of following end distance of said first arm 1 meter.
Compared with prior art; The present invention makes the flow velocity of gypsum slurries uniform and stable and straight-through to empty sampling line and atmosphere through the pressure of liquid level self generation on absorption tower; Manifold pressure is less, thereby makes and to flow through the flow speed stability to empty sampling line and densitometric gypsum slurries, thereby has reduced the wearing and tearing of gypsum slurries to densitometer and pH meter; Make the calcium plaster fluid power flow through densitometer smoothly and non-jamming density meter, and then prolonged the serviceable life of densitometer and pH meter.In addition,, the flow velocity of gypsum slurries controls because being the pressure that the liquid level self by the absorption tower produces, thereby, can significantly reduce the operation that field maintemance equipment is removed in manual work.
Through following description and combine accompanying drawing, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is installed in the synoptic diagram on the absorption tower for the device that the present invention measures serum density and potential of hydrogen.
Fig. 2 measures the synoptic diagram of device when first kind of working method of serum density and potential of hydrogen for the present invention.
Fig. 3 measures the synoptic diagram of device when second kind of working method of serum density and potential of hydrogen for the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.
As shown in Figure 1, the device that the present invention measures serum density and potential of hydrogen comprises empty stopple coupon assembly, densitometer 10, first pH meter 20 and second pH meter 30.Said empty stopple coupon assembly is comprised first arm 41, second arm 42, the 3rd arm 43, the 4th arm 44 and the 5th arm 45.Said first arm 41 be inclined upwardly 45 degree and the lower end of said first arm 41 is communicated with the lower end of said absorption tower (not shown) and the distance tower on said absorption tower at the bottom of (not shown) 1 meter, said first pH meter 20 inserts said first arm 41 from the upper end of said first arm 41.Said second arm 42 is being communicated with said first arm 41 of level, and the free end of said second arm 42 inserts extraneous wash tub pipe (not shown), and is provided with a ball valve 70 between the free end of said second arm 42 and the said extraneous wash tub pipe.The lower end of said the 3rd arm 43 is communicated with said first arm 41, and the upper end of said the 3rd arm 43 is communicated with the lower end of said densitometer 10.The upper end of said densitometer 10 is communicated with the lower end of said the 4th arm 44, and said second pH meter 30 inserts said the 4th arm 44 from the upper end of said the 4th arm 44, is used for redundant measurement.Said the 5th arm 45 is vertical being communicated with said the 4th arm 44, and the center line of said the 3rd arm 43, said the 4th arm 44 and said densitometer 10 is positioned at same straight line and parallel with the tower wall 50 on said absorption tower.The end of said the 5th arm 45 also is provided with a tank 80, is used to receive the measurement slurries of discharging.
Preferably, the device of said measurement serum density and potential of hydrogen also comprises butterfly valve 90, and said butterfly valve 90 is installed on said first arm 41 between said second arm 42 and the said absorption tower.Understandably, such set-up mode can be isolated empty sampling assemble said fast, so that repair and maintenance.
Particularly, the first big or small X-over 101 is installed between the upper end of the lower end of said densitometer 10 and said the 3rd arm 43, the second big or small X-over 102 is installed between the lower end of the upper end of said densitometer 10 and said the 4th arm 44.Like this, when the densitometer type selecting, can reduce one-level liner latus rectum size, can reduce purchase cost greatly.Between the lower end of said densitometer 10 and the said first big or small X-over 101 first isolation ball valve 111 is installed, between the upper end of said densitometer 10 and the said second big or small X-over 102 second isolation ball valve 112 is installed.Like this, can be convenient to adjust to advance to starch flow through regulating said first isolation ball valve 111 with said second isolation ball valve 112.The junction of said densitometer 10 and said the 3rd arm 43 at the bottom of the tower on said absorption tower 2.5 meters makes slurries from the requirement to flowing out automatically the empty sampling assemble to guarantee that the suitable pressure that utilizes said absorption tower self liquid level to produce satisfies.
Understandably, said butterfly valve 90 is used to isolate said absorption tower and said subsequent leg to empty stopple coupon assembly.When needing, can also be through regulating the aperture of said butterfly valve 90, regulate the flow that gets into said slurries to empty stopple coupon assembly.Said first isolation ball valve 111 that lays respectively at said densitometer 10 two ends can be used for said densitometer 10 is isolated empty stopple coupon assembly with said with said second isolation ball valve 112, so that said densitometer 10 is isolated maintenance.
In the present embodiment; The nominal diameter of said first arm 41, the 3rd arm 43, the 4th arm 44 and the 5th arm 45 is 50 millimeters; The nominal diameter of said second arm 42 is 40 millimeters; The bore of said densitometer 10 is 40 millimeters of nominal diameters, and an end nominal diameter of the said first big or small X-over 101 and the said second big or small X-over 102 is 50 millimeters, and other end nominal diameter is 40 millimeters.
Specify several kinds of working methods that the present invention measures the device of serum density and potential of hydrogen below in conjunction with accompanying drawing:
First kind of working method: with reference to figure 2; When needs are measured density and the pH value of gypsum slurries; Close said ball valve 70 earlier; Open said first isolation ball valve 111 at said densitometer 10 two ends, said second isolation ball valve 112 and said butterfly valve 90 more successively, like this, just can measure the density and the pH value of gypsum slurries with said first pH meter 20 with said densitometer 10.
Second kind of working method: with reference to figure 3; When needs when 20 flushings are safeguarded with said first pH meter to said densitometer 10; Close said butterfly valve 90 earlier, then open said ball valve 70 the technology wash-down water is introduced, empty stopple coupon assembly is washed said.
The third working method: when zero point drift takes place said densitometer 10, can said first isolation ball valve 111 at said densitometer 10 two ends be closed with said second isolation ball valve 112, then said densitometer 10 removed, carry out off-line calibration.If zero point drift takes place in said first pH meter 20, can the interface valve closing of said first pH meter 20 be removed said first pH meter 20 then, carry out off-line calibration.
As stated; The present invention makes the flow velocity of gypsum slurries uniform and stable and straight-through to empty sampling line and atmosphere through the pressure of liquid level self generation on absorption tower; Manifold pressure is less, thereby makes and to flow through the flow speed stability to empty sampling line and densitometric gypsum slurries, thereby has reduced the wearing and tearing of gypsum slurries to densitometer and pH meter; Make the calcium plaster fluid power flow through densitometer smoothly and non-jamming density meter, and then prolonged the serviceable life of densitometer and pH meter.In addition,, the flow velocity of gypsum slurries controls because being the pressure that the liquid level self by the absorption tower produces, thereby, can significantly reduce the operation that field maintemance equipment is removed in manual work.
Invention has been described more than to combine most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.