CN203241413U - Online pH value measurement structure of gypsum desulfurization tower in heat-engine plant - Google Patents
Online pH value measurement structure of gypsum desulfurization tower in heat-engine plant Download PDFInfo
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- CN203241413U CN203241413U CN 201320295060 CN201320295060U CN203241413U CN 203241413 U CN203241413 U CN 203241413U CN 201320295060 CN201320295060 CN 201320295060 CN 201320295060 U CN201320295060 U CN 201320295060U CN 203241413 U CN203241413 U CN 203241413U
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- gypsum
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- down pipe
- desulfurization tower
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Abstract
The utility model discloses an online pH value measurement structure of a gypsum desulfurization tower in a heat-engine plant. The online pH value measurement structure comprises a pH measuring meter, wherein the desulfurization tower is provided with an overflow pipe connected with a sewage discharging pit; the pH measuring meter is mounted on the overflow pipe. The pH measuring meter is mounted on the overflow pipe of the desulfurization tower; the overflow pipe is arranged in a static pressure manner, so that the friction of an outer pipe of the pH measuring meter is reduced. Thus, the service life of the pH measuring meter is prolonged; the cost is saved. An inlet of the overflow pipe is formed below the solution level of a solution storing pond of the desulfurization tower, so that a gypsum solution can flow out of the overflow pipe uninterruptedly. Therefore, the pH value of the current gypsum solution in the desulfurization tower can be accurately and efficiently obtained by the pH measuring meter at any time. The measured result is precise; the service life of the pH measuring meter is prolonged greatly.
Description
Technical field
The utility model relates to the thermoelectricity field, is specifically related to a kind of online pH value measurement of gypsum slurries structure of coal steam-electric plant smoke being carried out the desulfurization processing.
Background technology
In the Limestone-gypsum Wet Flue Gas Desulfurization Process system of thermal power plant, gypsum slurries density and pH value are the important parameters of slurries quality in the control absorption tower, gypsum slurries density generally adopts the mass flowmeter monitoring, the pH value is monitored by the absorption tower pH meter, when gypsum slurries density in the absorption tower reaches the setting duration, just gypsum slurries is delivered to gypsum dehydration system and carried out processed, therefore need the pH value of Real Time Monitoring parget water.Existing pH monitoring method mainly is to adopt the electric potential type measuring method, detects the activity of H ion in the parget water solution.Gypsum slurries complicated component, its characteristics mainly contain three: the one, and temperature is high, and summer, the absorption tower slurry temperature can reach more than 50 ℃, and near the working limit temperature of pH electrode, and the temperature of liquid is higher, and the pH value is lower; The 2nd, impurity is many, although limestone particle is very little, still has other materials of fraction to enter by all means the absorption tower, damages the sewage draining exit of electrode or obstruction flow cell; The 3rd, deposition is fast, and the sedimentation velocity of gypsum and lime stone is very fast, and muddy gypsum slurries only needs static tens of seconds, i.e. as seen clearly layering, and this specific character is easy to cause pH meter sampling pipe and flow cell to stop up.
Its enclosure material of most pH meter is composite membrane, and the inside and outside both sides of film are silica hydrogel layers.If layer of silica gel does not contact with aqueous solution for a long time, will dry and chap of the skin, cause electrode damage.Generally speaking, the pH electrode interior has been full of electrolytic solution when dispatching from the factory, and requires the pH electrode no matter to be in preservation state and still uses state, all must be immersed in the aqueous solution.In addition, solid particle is more in the parget water, also can directly wash away the pH electrode shell, so that wearing and tearing are accelerated, has shortened the serviceable life of electrode, has improved cost.
The utility model content
For solving the problem that the sampling of thermal power plant's desulfurization of gypsum tower on-line pH value is inaccurate and cost is large in the prior art, the utility model provides a kind of thermal power plant's desulfurization of gypsum tower on-line pH value sampling structure that can reduce wear and detect in real time, concrete scheme is as follows: the online pH value of a kind of thermal power plant desulfurization of gypsum tower is measured structure, comprise the pH meter, it is characterized in that, described desulfurizer is provided with the run-down pipe that is connected with the blowdown hole, and described pH meter is installed on the run-down pipe.
Be convenient disassembly: described pH meter is bolted on the run-down pipe.
Be the friction of minimizing gypsum solution to the pH meter: described pH meter is vertical with the liquid flow direction of run-down pipe.
For reducing the flow velocity of gypsum solution: be provided with the measurement bypass on the described run-down pipe, described pH meter is installed in to be measured in the bypass, and the porch of described measurement bypass is provided with filter screen.
Flow for guaranteeing the uninterrupted of gypsum solution: described run-down pipe is arranged on the liquid level below of desulfurizer bottom liquid storage tank and is positioned at desulfurizer gypsum vent pipe top.
The utility model is installed in the pH meter on the run-down pipe of desulfurizer, because run-down pipe is the static pressure setting, therefore can reduce the outer pipe friction to the pH meter, and then the serviceable life of having improved the pH meter, provides cost savings.The utility model is arranged on the entrance of run-down pipe below the desulfurizer liquid storage tank liquid level, so that gypsum solution can be continual by flowing out in the run-down pipe, has guaranteed that the pH meter can obtain the pH value of gypsum liquid current in the desulfurizer, precise and high efficiency at any time.Arrange and measure the flow velocity that gypsum liquid can be further controlled in bypass, in the situation of closing, also need not impact run-down pipe simultaneously, convenient maintenance to the pH meter.Filter screen is set further reduces in the gypsum impurity to the friction of pH meter.The utility model measurement result accurately and can greatly prolong serviceable life of pH meter.
Description of drawings
Fig. 1 structural representation of the present utility model;
Attached number in the figure explanation: 1-desulfurizer, 2-run-down pipe, 3-gypsum vent pipe, 301-gypsum extraction pump, 4-blowdown hole, 5-pH meter, 501-measure bypass, 502-filter screen, 6-supervisory system.
Embodiment
As shown in Figure 1, the online pH value of the utility model desulfurization of gypsum tower is measured structure, comprises pH meter 5, and described desulfurizer 1 is provided with and blowdown hole 4 run-down pipes that are connected 2, and described pH meter 5 is installed on the run-down pipe 2.
This practicality utilizes the run-down pipe 2 of desulfurizer 1 to measure the pH value of gypsum solution, can avoid being installed in the problem of resting in the interval of bringing on the gypsum vent pipe 3, pH meter 5 is contacted with gypsum solution in the desulfurizer 1 all the time, reached the purpose of real-time online measuring.After being installed on the run-down pipe 2, can also avoid owing to gypsum vent pipe 3 adopts pressure that gypsum extraction pumps 301 bring and flow velocity to the friction problem on pH meter 5 surfaces.The utility model is when work, the pH value that pH meter 5 is measured by the gypsum solution in the run-down pipe 2, by circuit the result is transported to supervisory system 6 again, be discharged to gypsum solution in the blowdown hole 4 under the control of supervisory system 6 by run-down pipe 2, regularly flow in the desulfurizer 1 by blowback, form recycling.
For avoiding available technology adopting flange Stationary pH meter 5 to cause dismantling loaded down with trivial details problem, pH meter 5 of the present utility model is bolted on the run-down pipe 2.By at run-down pipe 2 corresponding patchhole being set, pH meter 5 is installed in the patchhole of run-down pipe 2 by bolt, the centre seals by pad one class again, and the bolt of back-outing again when safeguarding can be cleared up or change, improve maintenance efficiency, reduced installing component.Wash away excessive wear for the part of avoiding pH meter 5 is subjected to gypsum solution, the utility model is with liquid flow direction vertical arrange of pH meter 5 with run-down pipe 2.Can improve gypsum solution by orthogonal form and flow to surface of contact with pH meter 5, enlarge accordingly bearing plane, not only accelerate to detect effect but also avoided the too fast problem of concentrated wear.For further reducing gypsum solution to the shock effect of pH meter 5, the utility model is provided with at described run-down pipe 2 and measures bypass 501, and described pH meter 5 is installed in to be measured in the bypass 501, and the porch of described measurement bypass 501 is provided with filter screen 502.Utilize and measure the flow velocity that bypass 501 reduces gypsum solution, reduce the impact to pH meter 5, improve the serviceable life of pH meter 5.The filter screen 502 of installing can further reduce the particle in the gypsum solution, and then reduces the friction to pH meter 5 surfaces, and the size of filter screen 502 sieve meshes is less than the caliber of measuring bypass 501 at least.For guaranteeing the uninterrupted mobile of gypsum solution, run-down pipe 2 of the present utility model is arranged on the liquid level below of desulfurizer 1 bottom liquid storage tank and is positioned at desulfurizer 1 gypsum vent pipe 3 tops.Can make like this parget water of pH meter 5 measurements continually, provide support for measuring in real time.
The utility model arranges corresponding operation valve at run-down pipe 2 and measurement bypass 501, with convenient control to flow, makes the monitoring of whole measuring system and safeguard all to be improved.Can also or measure bypass 501 at run-down pipe 2 and corresponding washpipe is set to guarantee the cleaning on unimpeded and pH meter 5 surfaces in each pipeline.Temperature by gypsum slurries behind the said structure can be controlled at about 25 ℃ and pressure little, the working range of complete corresponding pH meter.
The above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model with preferred embodiment openly as above, yet be not to limit the utility model, anyly be familiar with the technician of this patent within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned prompting is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of the utility model scheme.
Claims (5)
1. thermal power plant's desulfurization of gypsum tower on-line pH value is measured structure, comprises the pH meter, it is characterized in that, described desulfurizer (1) is provided with the run-down pipe (2) that is connected with blowdown hole (4), and described pH meter (5) is installed on the run-down pipe (2).
2. a kind of thermal power plant as claimed in claim 1 desulfurization of gypsum tower on-line pH value is measured structure, it is characterized in that described pH meter (5) is bolted on the run-down pipe (2).
3. a kind of thermal power plant as claimed in claim 2 desulfurization of gypsum tower on-line pH value is measured structure, it is characterized in that described pH meter (5) is vertical with the interior liquid flow direction of run-down pipe (2).
4. a kind of thermal power plant as claimed in claim 2 desulfurization of gypsum tower on-line pH value is measured structure, it is characterized in that, be provided with on the described run-down pipe (2) and measure bypass (501), described pH meter (5) is installed in to be measured in the bypass (501), and the porch of described measurement bypass (501) is provided with filter screen (502).
5. a kind of thermal power plant as claimed in claim 1 desulfurization of gypsum tower on-line pH value is measured structure, it is characterized in that, described run-down pipe (2) is arranged on the liquid level below of desulfurizer (1) bottom liquid storage tank and is positioned at desulfurizer gypsum vent pipe (3) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295060 CN203241413U (en) | 2013-05-27 | 2013-05-27 | Online pH value measurement structure of gypsum desulfurization tower in heat-engine plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295060 CN203241413U (en) | 2013-05-27 | 2013-05-27 | Online pH value measurement structure of gypsum desulfurization tower in heat-engine plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241413U true CN203241413U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320295060 Expired - Fee Related CN203241413U (en) | 2013-05-27 | 2013-05-27 | Online pH value measurement structure of gypsum desulfurization tower in heat-engine plant |
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| Country | Link |
|---|---|
| CN (1) | CN203241413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290727B (en) * | 2016-08-08 | 2018-12-07 | 江苏国胶化学科技有限公司 | The online pH value measuring mechanism installation method of water scrubber |
| CN109317073A (en) * | 2018-10-25 | 2019-02-12 | 老河口市天和科技有限公司 | A kind of pH on-line checking reaction kettle |
-
2013
- 2013-05-27 CN CN 201320295060 patent/CN203241413U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290727B (en) * | 2016-08-08 | 2018-12-07 | 江苏国胶化学科技有限公司 | The online pH value measuring mechanism installation method of water scrubber |
| CN109317073A (en) * | 2018-10-25 | 2019-02-12 | 老河口市天和科技有限公司 | A kind of pH on-line checking reaction kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20150527 |
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| EXPY | Termination of patent right or utility model |