CN112985900A - Chemical cleaning sampling cooling device and use method - Google Patents
Chemical cleaning sampling cooling device and use method Download PDFInfo
- Publication number
- CN112985900A CN112985900A CN202110283872.3A CN202110283872A CN112985900A CN 112985900 A CN112985900 A CN 112985900A CN 202110283872 A CN202110283872 A CN 202110283872A CN 112985900 A CN112985900 A CN 112985900A
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- sampling
- cooling
- temperature
- chemical cleaning
- measuring point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/12—Thermometers specially adapted for specific purposes combined with sampling devices for measuring temperatures of samples of materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
Abstract
The invention discloses a chemical cleaning sampling cooling device and a use method thereof, wherein the cooling device comprises a cooler connected with a chemical cleaning pipeline, a cooling sampling pipe, a cooling water inlet pipe, a cooling water outlet pipe, a cooling water inlet valve and a cooling water outlet valve which are arranged on the cooler, wherein a sampling water inlet valve and a sampling temperature measuring point I are arranged on a communication section of the cooling sampling pipe and the chemical cleaning pipeline, a sampling water outlet valve and a sampling temperature measuring point II are arranged on an outlet section of the cooling sampling pipe, and the cooler and the chemical cleaning pipeline are fixedly connected and supported; the cooling water flows outside the cooling sampling pipe and forms countercurrent with the high-temperature cleaning medium in the cooling sampling pipe. The invention also discloses a using method of the cooling sampling device, so as to control the sampling temperature after cooling to be less than 30 ℃; the device of the invention has simple design, reliability and easy realization, and solves the problems of inaccurate sampling detection and measurement lag due to high system temperature in the chemical cleaning process.
Description
Technical Field
The invention belongs to a novel device and a method for sampling a chemical cleaning medium of thermal equipment, and particularly relates to a chemical cleaning sampling cooling device and a using method thereof.
Background
In the chemical cleaning process of the thermal equipment, the temperature of a cleaning medium is usually high and reaches 85-95 ℃, and some cleaning media even reach 120-130 ℃. By adopting the traditional chemical sampling method, the accuracy of measurement can be ensured only by separately cooling the high-temperature water sample to below 30 ℃ and then measuring the pH index. The traditional sampling method has the following defects: if the temperature of the high-temperature water sample after being cooled is below 30 ℃, the accuracy of pH value measurement can be influenced, the measurement result is lagged, the sampling and measurement of the cleaning medium lack continuity, the chemical cleaning process cannot be controlled well, and meanwhile, the traditional sampling method brings certain potential safety hazards to operators.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a chemical cleaning sampling cooling device and a use method thereof, wherein the device is simple in design, reliable and easy to implement, and solves the problems of misalignment and hysteresis of a traditional chemical cleaning sampling method for measuring a high-temperature water sample and the safety of sampling detection personnel.
In order to achieve the purpose, the invention adopts the following technical scheme,
a chemical cleaning sampling cooling device comprises a cooler 3 connected with a chemical cleaning pipeline 1, a cooling sampling pipe 4, a cooling water inlet pipe 9, a cooling water outlet pipe 10, a cooling water inlet valve 7 and a cooling water outlet valve 8 which are arranged on the cooler 3, wherein a sampling water inlet valve 5 and a sampling temperature measuring point I11 are arranged on a communication section of the cooling sampling pipe 4 and the chemical cleaning pipeline 1, a sampling water outlet valve 6 and a sampling temperature measuring point II 12 are arranged on an outlet section of the cooling sampling pipe 4, and the cooler 3 and the chemical cleaning pipeline 1 are fixed by adopting a connecting support 2; the cooling water flows outside the cooling sampling tube 4 and forms a counter flow with the high-temperature cleaning medium in the cooling sampling tube 4.
And a first sampling temperature measuring point 11 and a second sampling temperature measuring point 12 are arranged on the cooling sampling tube 4, and the sampling temperatures before and after cooling are detected.
The cooling water is normal-temperature industrial water, the temperature value of the second sampling temperature measuring point 12 is controlled to be less than 30 ℃ by adjusting the opening degrees of the cooling water inlet valve 7 and the sampling water outlet valve 6, the pH value index of the chemical sampling can be continuously detected on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and the misalignment and the hysteresis caused by independently cooling and measuring the high-temperature water sample by the traditional chemical cleaning sampling method are solved.
The using method of the chemical cleaning sampling cooling device comprises the steps of opening a cooling water outlet valve 8 and a cooling water inlet valve 7, introducing normal-temperature industrial cooling water into a cooler 3, opening a sampling water outlet valve 6 and a sampling water inlet valve 5 in sequence, observing temperature values of a first sampling temperature measuring point 11 and a second sampling temperature measuring point 12, opening the cooling water inlet valve 7 when the temperature value of the second sampling temperature measuring point 12 is higher than 30 ℃, and adjusting the opening of the sampling water outlet valve 6 until the temperature value of the second sampling temperature measuring point 12 is lower than 30 ℃.
By the chemical cleaning sampling cooling device and the use method, the pH value index of the high-temperature chemical cleaning water sample can be continuously detected on line, the accuracy and the continuity of chemical cleaning sampling detection are ensured, more accurate data analysis is provided for the process control of the chemical cleaning process, and the safety of sampling detection personnel in the high-temperature sampling process is ensured. Compared with the prior art, the invention has the following advantages:
1) the method can continuously obtain the directly detectable low-temperature water sample without independently cooling the high-temperature water sample;
2) the pH value index of the high-temperature chemical water sample can be continuously detected on line, and the continuity is realized;
3) the accuracy of the chemical cleaning sampling detection is ensured, and more accurate data analysis is provided for the process control of the chemical cleaning process;
4) the low-temperature cleaning water sample with the temperature value less than 30 ℃ can be continuously obtained, and the safety of sampling and detecting personnel is ensured.
5) The device has simple design, reliable performance and easy realization.
Drawings
FIG. 1 is a schematic view of a chemical cleaning sampling cooling device and a method for using the same.
In the figure: 1, chemically cleaning a pipeline; 2, connecting and supporting; 3-a cooler; 4-cooling the sampling tube; 5-a sampling water inlet valve; 6-sampling water outlet valve; 7-cooling water inlet valve; 8-cooling water outlet valve; 9-cooling water inlet pipe; 10-cooling water outlet pipe; 11-sampling temperature measurement point one; 12-sampling temperature measurement point two.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in figure 1, the chemical cleaning sampling cooling device comprises a cooler 3 connected with a chemical cleaning pipeline 1, a cooling sampling pipe 4, a cooling water inlet pipe 9, a cooling water outlet pipe 10, a cooling water inlet valve 7 and a cooling water outlet valve 8 which are arranged on the cooler 3, wherein a sampling water inlet valve 5 and a sampling temperature measuring point I11 are arranged on a communicating section of the cooling sampling pipe 4 and the chemical cleaning pipeline 1, a sampling water outlet valve 6 and a sampling temperature measuring point II 12 are arranged on an outlet section of the cooling sampling pipe 4, and the cooler 3 and the chemical cleaning pipeline 1 are fixed by adopting a connecting support 2 to ensure the sampling reliability; the cooling water flows outside the cooling sampling tube 4 and forms a counter flow with the high-temperature cleaning medium in the cooling sampling tube 4.
According to the invention, the first sampling temperature measuring point 11 and the second sampling temperature measuring point 12 are arranged on the cooling sampling pipe 4, and the sampling temperatures before and after cooling are detected, so that the opening degrees of the cooling water inlet valve 7 and the sampling water outlet valve 6 can be adjusted in time, and the temperature of the obtained cleaning medium is ensured to meet the detection requirement.
The cooling water in the invention is normal temperature industrial water, the temperature value of the second sampling temperature measuring point 12 is controlled to be less than 30 ℃ by adjusting the opening degrees of the cooling water inlet valve 7 and the sampling water outlet valve 6, the detection of the pH value index of the chemical sampling can be continuously carried out on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and the misalignment and the hysteresis caused by independently carrying out cooling measurement on a high temperature water sample by using a traditional chemical cleaning sampling method are solved.
As shown in figure 1, the using method of the chemical cleaning sampling cooling device comprises the steps of opening a cooling water outlet valve 8 and a cooling water inlet valve 7, introducing normal-temperature industrial cooling water into a cooler 3, sequentially opening a sampling water outlet valve 6 and a sampling water inlet valve 5, observing temperature values of a first sampling temperature measuring point 11 and a second sampling temperature measuring point 12, opening the cooling water inlet valve 7 when the temperature value of the second sampling temperature measuring point 12 is higher than 30 ℃, and adjusting the opening of the sampling water outlet valve 6 until the temperature value of the second sampling temperature measuring point 12 is lower than 30 ℃.
The method can continuously obtain the low-temperature water sample which can be directly detected without independently cooling the high-temperature water sample.
In the high-temperature chemical cleaning process of the thermodynamic equipment, the pH value index of the high-temperature chemical water sample can be continuously detected on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and the safety of sampling detection personnel in the high-temperature sampling process is also ensured.
In the high-temperature chemical cleaning process of the thermal equipment, the cleaning water sample with the temperature value less than 30 ℃ can be continuously obtained through the sampling and cooling device, the pH value index of the cleaning water sample can be continuously detected on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and more accurate data analysis is provided for the process control of the chemical cleaning process.
Claims (6)
1. The utility model provides a chemical cleaning sample cooling device which characterized in that: the chemical cleaning device comprises a cooler (3) connected with a chemical cleaning pipeline (1), a cooling sampling pipe (4), a cooling water inlet pipe (9), a cooling water outlet pipe (10), a cooling water inlet valve (7) and a cooling water outlet valve (8) which are arranged on the cooler (3), wherein a sampling water inlet valve (5) and a sampling temperature measuring point I (11) are arranged on a communication section of the cooling sampling pipe (4) and the chemical cleaning pipeline (1), a sampling water outlet valve (6) and a sampling temperature measuring point II (12) are arranged on an outlet section of the cooling sampling pipe (4), and the cooler (3) and the chemical cleaning pipeline (1) are fixed by adopting a connecting support (2); the cooling water flows out of the cooling sampling tube (4) and forms a counter flow with the high-temperature cleaning medium in the cooling sampling tube (4).
2. A chemical cleaning sampling cooling device according to claim 1, characterized in that: a first sampling temperature measuring point (11) and a second sampling temperature measuring point (12) are arranged on the cooling sampling pipe (4) to detect the sampling temperatures before and after cooling.
3. A chemical cleaning sampling cooling device according to claim 1, characterized in that: the cooling water is normal-temperature industrial water, the temperature value of the second sampling temperature measuring point (12) is controlled to be less than 30 ℃ by adjusting the opening degrees of the cooling water inlet valve (7) and the sampling water outlet valve (6), the pH value index of the chemical sampling can be continuously detected on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and the misalignment and the hysteresis caused by independently cooling and measuring the high-temperature water sample by the traditional chemical cleaning sampling method are solved.
4. A method of using a chemical cleaning sampling cooling device according to any one of claims 1 to 3, characterized in that: opening a cooling water outlet valve (8) and a cooling water inlet valve (7), introducing normal-temperature industrial cooling water into a cooler (3), sequentially opening a sampling water outlet valve (6) and a sampling water inlet valve (5), observing temperature values of a sampling temperature measuring point I (11) and a sampling temperature measuring point II (12), opening the cooling water inlet valve (7) when the temperature value of the sampling temperature measuring point II (12) is higher than 30 ℃, and adjusting the opening of the sampling water outlet valve (6) until the temperature value of the sampling temperature measuring point II (12) is lower than 30 ℃.
5. Use according to claim 4, characterized in that: in the chemical cleaning process of the thermodynamic equipment, a low-temperature water sample for direct detection can be continuously obtained, and the step of independently cooling the high-temperature water sample is not needed.
6. Use according to claim 4, characterized in that: in the chemical cleaning process of the thermodynamic equipment, the pH value index of the high-temperature chemical water sample is continuously detected on line, the accuracy and the continuity of the chemical cleaning sampling detection are ensured, and the safety of sampling detection personnel in the high-temperature sampling process is also ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110283872.3A CN112985900A (en) | 2021-03-17 | 2021-03-17 | Chemical cleaning sampling cooling device and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110283872.3A CN112985900A (en) | 2021-03-17 | 2021-03-17 | Chemical cleaning sampling cooling device and use method |
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| CN112985900A true CN112985900A (en) | 2021-06-18 |
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| CN202110283872.3A Pending CN112985900A (en) | 2021-03-17 | 2021-03-17 | Chemical cleaning sampling cooling device and use method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006247620A (en) * | 2005-03-14 | 2006-09-21 | Chugoku Electric Power Co Inc:The | Method for washing sample cooler |
| CN202216870U (en) * | 2011-09-13 | 2012-05-09 | 泰安市泰山东城热电有限责任公司 | Closed type comprehensive cooler for chemical sampling water |
| CN204469688U (en) * | 2015-02-09 | 2015-07-15 | 华能国际电力股份有限公司 | A kind of cooling device of high temperature ammonia-containing gas sampler |
| CN205157262U (en) * | 2015-10-26 | 2016-04-13 | 宁夏卓锐石化装备有限公司 | On -line sampler |
| CN108469355A (en) * | 2018-06-08 | 2018-08-31 | 华能国际电力股份有限公司 | A kind of power plant carbonated drink sampler and sampling method on the spot |
| CN109459269A (en) * | 2018-12-03 | 2019-03-12 | 森松（江苏）重工有限公司 | A kind of high-temperature pipe sampling system |
| CN210322404U (en) * | 2019-06-05 | 2020-04-14 | 珠海映创新能源科技有限公司 | Water sampling cooler for steam boiler |
-
2021
- 2021-03-17 CN CN202110283872.3A patent/CN112985900A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006247620A (en) * | 2005-03-14 | 2006-09-21 | Chugoku Electric Power Co Inc:The | Method for washing sample cooler |
| CN202216870U (en) * | 2011-09-13 | 2012-05-09 | 泰安市泰山东城热电有限责任公司 | Closed type comprehensive cooler for chemical sampling water |
| CN204469688U (en) * | 2015-02-09 | 2015-07-15 | 华能国际电力股份有限公司 | A kind of cooling device of high temperature ammonia-containing gas sampler |
| CN205157262U (en) * | 2015-10-26 | 2016-04-13 | 宁夏卓锐石化装备有限公司 | On -line sampler |
| CN108469355A (en) * | 2018-06-08 | 2018-08-31 | 华能国际电力股份有限公司 | A kind of power plant carbonated drink sampler and sampling method on the spot |
| CN109459269A (en) * | 2018-12-03 | 2019-03-12 | 森松（江苏）重工有限公司 | A kind of high-temperature pipe sampling system |
| CN210322404U (en) * | 2019-06-05 | 2020-04-14 | 珠海映创新能源科技有限公司 | Water sampling cooler for steam boiler |
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Application publication date: 20210618 |