CN211235083U - Automatic backwashing system of steam sampling filter of thermal power plant - Google Patents
Automatic backwashing system of steam sampling filter of thermal power plant Download PDFInfo
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- CN211235083U CN211235083U CN201922278665.XU CN201922278665U CN211235083U CN 211235083 U CN211235083 U CN 211235083U CN 201922278665 U CN201922278665 U CN 201922278665U CN 211235083 U CN211235083 U CN 211235083U
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- pipe
- backwashing
- filter
- steam
- backwash
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- 238000011001 backwashing Methods 0.000 title claims abstract description 64
- 238000005070 sampling Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The utility model relates to an automatic backwashing system of a steam sampling filter of a thermal power plant, which comprises a filter, a measuring flow cell and a backwashing water storage box; the water inlet of filter on the switch-on have steam to advance the pipe, steam advance to establish ties on the pipe and have first automatically controlled valve, it has the backwash drain pipe to advance to put through on the pipe at steam, backwash drain pipe on establish ties and have the second automatically controlled valve, the delivery port of filter on the switch-on have the steam exit tube, the steam exit tube on establish ties and have the third automatically controlled valve, this steam exit tube and measurement circulation pond switch-on, measure circulation pond and backwash water storage box and pass through the switch-on communicating pipe, the switch-on has the backwash pipe on the backwash water storage box, this backwash pipe tieback to the steam exit tube on, and the backwash pipe on establish ties has the backwash water pump, the backwash pipe on establish ties and have the fourth automatically controlled valve, the utility model discloses can carry out the backwash to it automatically or manually after reaching certain cycle in the filter operation, guarantee the quality of steam in the system.
Description
Technical Field
The utility model relates to a steam sampling system's of thermal power plant technical field, in particular to automatic backwash system of steam sampling filter of thermal power plant.
Background
In a thermodynamic system of a thermal power plant, main working media are water and steam, the quality of the water and the steam directly influences the performance of a heat engine, the water and the steam need to be subjected to temperature reduction and pressure reduction, continuous sampling and instrument analysis monitoring are carried out on line, the quality of the water and the steam is ensured, the influence of adverse factors such as corrosion and scaling of thermodynamic equipment such as boilers, steam drums and steam engines is prevented, safe and stable operation is ensured, along with the continuous operation of high-parameter and high-capacity coal-fired generating sets in recent years, the monitoring of steam indexes is more and more important, at present, the quality of the steam is generally monitored by an on-line instrument continuously, in order to ensure the accuracy of on-line instrument measurement, particle impurities in sample water need to be removed by a filter before the sample water enters a measurement flow cell, after a filter element of the filter is used for a period of time, the amount of the intercepted impurities reaches the upper limit, whether can't in time judge the filter core and reach the change requirement, the filter core that seriously pollutes does not have the filtration basically, impurity in the water sample sees through the filter, directly get into measuring electrode flow cell, not only influence electrode life, increase running cost, still the measurement accuracy of the online instrument of greatly reduced, can't in time accurately reflect the true quality of steam, greatly increased thermodynamic system corruption, scale deposit, the risk of long-pending salt, consequently, the above-mentioned problem is the technological difficult problem that technical staff in the field await measuring urgently.
SUMMERY OF THE UTILITY MODEL
Filter core pollutes seriously among the steam sampling system to current power plant, influences online chemical instrumentation accuracy, shortens measuring electrode life, the utility model aims to provide an automatic backwash system of steam sampling filter can effectively solve this problem.
In order to solve the above problem, the utility model provides a following technical scheme: the utility model provides an automatic backwash system of steam sampling filter of thermal power plant, this system include the filter, measure flow-through cell and backwash water storage box, characterized by:
the water inlet of the filter is communicated with a water vapor inlet pipe, the water vapor inlet pipe is communicated with a backwashing water drain pipe, the water outlet of the filter is communicated with a water vapor outlet pipe, the water vapor outlet pipe is communicated with a measuring flow cell, the measuring flow cell is communicated with a backwashing water storage tank through a communicating pipe, the backwashing water storage tank is communicated with a backwashing pipe, the backwashing pipe is connected to the water vapor outlet pipe in a return mode, and a backwashing water pump is connected to the backwashing pipe in series.
Preferably, the steam inlet pipe is connected in series with a first electric control valve.
Preferably, the connection point between the backwashing water discharge pipe and the water vapor inlet pipe is positioned between the first electric control valve and the filter.
Preferably, a second electric control valve is connected in series with the backwashing water discharge pipe.
Preferably, a third electric control valve is connected in series on the vapor outlet pipe.
Preferably, the connection point between the backwash pipe and the moisture outlet pipe is located between the third electrically controlled valve and the filter.
Preferably, a fourth electric control valve is connected in series on the back flushing pipe.
The utility model has the advantages of:
the utility model relates to an automatic backwashing system of a steam sampling filter of a thermal power plant, which consists of a sampling part and a backwashing part, when the sampling system operates normally, steam enters a measuring flow cell after being filtered by a filter, on-line analysis and test are completed, the drainage of the measuring flow cell is collected into a backwashing water storage tank, the water collected in the backwashing water storage tank can be used as the backwashing water of the filter, the local materials can be obtained, the new construction cost can not be increased, the backwashing drainage can be directly drained to a trench between the steam sampling, when the operation period of the sampling system reaches a set value, the system can automatically carry out backwashing, the backwashing time is short, the influence on an on-line instrument is hardly generated, the accuracy of the on-line chemical instrument is not influenced, the filter core of the filter can be cleaned in time, the performance of the filter is ensured, the drainage of the flow cell is collected as a backwashing, each filter backwashing pipeline can be connected in parallel, a plurality of filters can be backwashed once, the drainage quantity of the flow cell can be measured simultaneously to meet the backwashing requirement, and wastewater is utilized in a gradient manner to meet the water-saving requirement.
Drawings
FIG. 1 is a connection diagram of an automatic backwashing system of a steam sampling filter in a thermal power plant;
in the figure: 11. the device comprises a first electronic control valve, a steam inlet pipe, a second electronic control valve, a backwash water outlet pipe, a filter, a steam outlet pipe, a backwash pipe, a measuring flow cell, a backwash water pump, a backwash water storage tank and a communication pipe, wherein the first electronic control valve is 12, the steam inlet pipe is 13, the second electronic control valve is 14, the backwash water outlet pipe is 15, the filter is 16, the steam outlet pipe is.
Detailed Description
In a first embodiment, referring to fig. 1, an automatic backwashing system of a steam sampling filter in a thermal power plant comprises the filter, a measuring flow cell and a backwashing water storage tank;
a water inlet of the filter is communicated with a water vapor inlet pipe, the water vapor inlet pipe is connected with a first electric control valve in series, a backwashing water discharge pipe is communicated with the water vapor inlet pipe, a second electric control valve is connected in series with the backwashing water discharge pipe, the connecting point between the backwashing water discharge pipe and the water vapor inlet pipe is positioned between the first electric control valve and the filter, a water outlet of the filter is communicated with a water vapor outlet pipe, the water vapor outlet pipe is connected with a third electric control valve in series, the water vapor outlet pipe is communicated with a measuring flow cell, the measuring flow cell is communicated with a backwashing water storage tank through a communicating pipe, a backwashing pipe is communicated with the backwashing water storage tank, the backwashing pipe is connected to the water vapor outlet pipe in a return mode, a backwashing water pump is connected to the backwashing pipe in series, a connection point between the backwashing pipe and the water vapor outlet pipe is located between the third electric control valve and the filter, and the backwashing pipe is connected to the fourth electric control valve in series.
The utility model discloses a working process and principle:
referring to fig. 1, the utility model discloses an automatic backwash system of steam sampling filter of thermal power plant, this system includes two parts: an operation part and a backwashing part; when the sampling system normally operates, the first electric control valve and the third electric control valve are opened, the fourth electric control valve and the second electric control valve are closed, water vapor is filtered by the filter and then enters the measuring flow cell, online analysis and test are completed, the drainage of the measuring flow cell is collected into the backwashing water storage tank, when the sampling system operates for a certain period or the filter is obviously polluted and blocked, backwashing operation of the filter is carried out to remove impurities on the surface of the filter element and restore the filtering capacity of the filter element, a backwashing water pump is started during backwashing, the fourth electric control valve and the second electric control valve are opened, the first electric control valve and the third electric control valve are closed, dirty backwashing water is prevented from entering the flow cell, the backwashing water can reversely enter the filter under the pressure of the backwashing water pump at the moment, the filter element of the filter is reversely flushed, and the backwashing loose impurities can be discharged to a trench along with backwashing drainage.
The above embodiments are only used for describing the present invention, and it is not understood that the present invention is limited to the protection scope, and the technical engineers in the field are right according to the above-mentioned utility model, the present invention makes some non-essential improvements and adjustments all fall into the protection scope of the present invention.
Claims (7)
1. The utility model provides an automatic backwash system of steam sampling filter of thermal power plant, this system include the filter, measure flow-through cell and backwash water storage box, characterized by:
the water inlet of the filter is communicated with a water vapor inlet pipe, the water vapor inlet pipe is communicated with a backwashing water drain pipe, the water outlet of the filter is communicated with a water vapor outlet pipe, the water vapor outlet pipe is communicated with a measuring flow cell, the measuring flow cell is communicated with a backwashing water storage tank through a communicating pipe, the backwashing water storage tank is communicated with a backwashing pipe, the backwashing pipe is connected to the water vapor outlet pipe in a return mode, and a backwashing water pump is connected to the backwashing pipe in series.
2. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 1, wherein: the water vapor inlet pipe is connected with a first electric control valve in series.
3. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 2, wherein: and the connection point between the backwashing water discharge pipe and the water vapor inlet pipe is positioned between the first electric control valve and the filter.
4. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 3, wherein: and a second electric control valve is connected in series on the backwashing water discharge pipe.
5. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 1, wherein: and a third electric control valve is connected in series on the water vapor outlet pipe.
6. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 5, wherein: and the connecting point between the backwashing pipe and the water vapor outlet pipe is positioned between the third electric control valve and the filter.
7. The automatic backwashing system of the steam sampling filter of the thermal power plant as claimed in claim 6, wherein: and a fourth electric control valve is connected in series on the back flushing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278665.XU CN211235083U (en) | 2019-12-18 | 2019-12-18 | Automatic backwashing system of steam sampling filter of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278665.XU CN211235083U (en) | 2019-12-18 | 2019-12-18 | Automatic backwashing system of steam sampling filter of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211235083U true CN211235083U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922278665.XU Expired - Fee Related CN211235083U (en) | 2019-12-18 | 2019-12-18 | Automatic backwashing system of steam sampling filter of thermal power plant |
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| CN (1) | CN211235083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954365A (en) * | 2019-12-18 | 2020-04-03 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | An automatic backwashing system for water vapor sampling filter in thermal power plant |
| CN116659951A (en) * | 2023-06-25 | 2023-08-29 | 华能(福建漳州)能源有限责任公司 | A thermal power plant water vapor sampling device and using method thereof |
-
2019
- 2019-12-18 CN CN201922278665.XU patent/CN211235083U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954365A (en) * | 2019-12-18 | 2020-04-03 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | An automatic backwashing system for water vapor sampling filter in thermal power plant |
| CN116659951A (en) * | 2023-06-25 | 2023-08-29 | 华能(福建漳州)能源有限责任公司 | A thermal power plant water vapor sampling device and using method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200811 |