CN208567560U - A kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units - Google Patents
A kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units Download PDFInfo
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- CN208567560U CN208567560U CN201820277925.4U CN201820277925U CN208567560U CN 208567560 U CN208567560 U CN 208567560U CN 201820277925 U CN201820277925 U CN 201820277925U CN 208567560 U CN208567560 U CN 208567560U
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Abstract
The utility model discloses a kind of condensed water Water Level Regulating Systems suitable for double back pressure thermal power plant units, high back pressure side condensed water hot well outlet conduit exit of the utility model in the double back pressure thermal power plant unit heating systems of height is provided with electric control valve and hand stop valve, the automatic control of water level is realized by motorized adjustment valve control system, the flow that height back pressure two sides condensed water enters condensate pump entrance main pipe is balanced with this, achieve the purpose that control two sides water level of thermal well is poor, the utility model effectively solve condenser two sides pressure difference it is excessive caused by condensed water water level imbalance, to meet the requirement that two sides condensed water hot well still shares original condensate pump, it is not required to substantially be transformed, reach simplified system, it reduces investment outlay, improve operational reliability.
Description
Technical field
The utility model belongs to large-scale thermal power machine group high efficiency thermoelectric coproduction field, and in particular to one kind is suitable for double back
Press the condensed water Water Level Regulating System of thermal power plant unit.
Background technique
It on the basis of high back pressure heat supply process, is required to improve unit operational flexibility, adapting to peak load regulation, mesh within nearly 2 years
A kind of preceding country double efficient heat supply process of back pressure newly developed: heat supply period unit uses two kinds of cooling working medium, different steam discharges simultaneously
The corresponding condenser separate chamber of mouth, side low pressure (LP) cylinder exhaust pressure are improved to 40kPa~50kPa, and corresponding cooling working medium is heat supply network
Recirculated water, low pressure steam discharge are used for heating；Other side low pressure (LP) cylinder exhaust pressure maintains 4kPa~7kPa, and corresponding cooling working medium is
Recirculated cooling water.
Since condenser two sides pressure difference reaches 40kPa or so, it theoretically will lead to two sides water level of thermal well difference and reach 4m, cause
Condensed water water level can not be maintained normally, unit condenser can not be transported normally, high and low back pressure side condensate system need to be isolated and each
From independent operating.
For the thermal power plant unit of above-mentioned double back pressure operations, if designing a set of independent condensed water liter for high back pressure side
Pressure system then needs isolation high back pressure side condensed water and normal back pressure side condensed water with original system parallel running, while being high back pressure
Newly-increased 2 condensate pumps of side condensed water (fortune one is standby), valve, pipeline and corresponding heat control system etc., thereby result in condensation water system
System is complicated, and investment for trnasforming urban land obviously increases.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of condensed waters suitable for double back pressure thermal power plant units
Water Level Regulating System, can effectively solve condenser two sides pressure difference it is excessive caused by condensed water water level imbalance, thus meet two
Side condensed water hot well still shares the requirement of original condensate pump, is not required to substantially be transformed, reach simplified system, reduce investment outlay,
Improve the purpose of operational reliability.
In order to achieve the above object, the utility model includes that there is the pure condensate of high back pressure side and low back pressure side to run or take out to coagulate
The condensate system of operation, high back pressure side steam discharge access high-pressure side hot well, and low back pressure side steam discharge accesses low-pressure side hot well, high-pressure side
Hot well and low-pressure side hot well access condensate pump, are provided with electric control valve on the condensation water outlet line of high-pressure side hot well,
Electric control valve connects control system, and control system is used for the water-head according to high-pressure side hot well and low-pressure side hot well, and control is high
Pressure side hot well enters the condensing water flow of condensate pump entrance main pipe.
Electric control valve downstream is provided with the manual modulation valve for controlling high-pressure side hot well water flow, and when normal operation is complete
It opens, can be used as and spare manually adjust measure.
Condensate pump upstream is provided with the adjusting of the condensate pump for controlling high-pressure side hot well and low-pressure side hot well water flow
Valve.
High-pressure side hot well connects heat supply network return water.
Low-pressure side hot well connects recirculated cooling water.
Recirculated cooling water is supplied using water circulating pump.
Compared with prior art, the utility model is provided with the high-pressure side hot well of access high back pressure side and accesses low back pressure side
Low-pressure side hot well, the exit of high-pressure side hot well is provided with electric control valve, and electric control valve realizes water by control system
Position automatic control, the utility model effectively solve condenser two sides pressure difference it is excessive caused by condensed water water level imbalance, from
And meet the requirement that two sides condensed water hot well still shares original condensate pump, it is not required to substantially be transformed, reaches simplified system, section
Investment-saving improves operational reliability.
Further, the utility model is provided with manual modulation valve, can prevent from accidentally closing, and standard-sized sheet when normal operation can be made
Measure is manually adjusted for spare.
Detailed description of the invention
Fig. 1 is the condensate system structural schematic diagram with water auto-regulation system of the utility model；
Fig. 2 is the structural schematic diagram of the high and low independently operated condensate system in back pressure side of tradition；
Wherein, 1, condensate system；2, high-pressure side hot well；3, low-pressure side hot well；4, condensate pump；5, electric control valve；
6, manual modulation valve；7, condensate pump regulating valve；8, water circulating pump.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Referring to Fig. 1, the utility model includes that there is the pure condensate of high back pressure side and low back pressure side to run or take out the solidifying of solidifying operation
System 1 is born water, high back pressure side steam discharge accesses high-pressure side hot well 2, and low back pressure side steam discharge accesses low-pressure side hot well 3, high-pressure side hot well
2 and low-pressure side hot well 3 access condensate pump 4, be provided with electric control valve 5 on the condensation water outlet line of high-pressure side hot well 2,
Electric control valve 5 connects control system, and control system is used for the water-head according to high-pressure side hot well 2 and low-pressure side hot well 3, control
The condensing water flow of high-pressure side hot well 2,5 downstream of electric control valve are provided with for controlling the manual of 2 water flow of high-pressure side hot well
Regulating valve 6,4 upstream of condensate pump are provided with the condensate pump tune for controlling 3 water flow of high-pressure side hot well 2 and low-pressure side hot well
Save valve 7.High-pressure side hot well 2 connects heat supply network return water, and low-pressure side hot well 3 connects recirculated cooling water, and recirculated cooling water uses recirculated water
8 supply of pump.
The working method of the utility model, comprising the following steps:
Step 1, high pressure back pressure side and low pressure back pressure side each lead into steam discharge in high-pressure side hot well 2 and low-pressure side hot well 3
It exchanges heat；
Step 2, the condensed water after high-pressure side hot well 2 exchanges heat are passed through condensate pump 4, low-pressure side heat by electric control valve 5
Condensed water after well 3 exchanges heat is passed through condensate pump 4；
Step 3 adjusts electric control valve 5 to preset value, while monitoring the water of high-pressure side hot well 2 and low-pressure side hot well 3
Position；
Step 4, when the level error of high-pressure side hot well 2 and low-pressure side hot well 3 reaches threshold value, control system control is electronic
Regulating valve 5 is turned down or is opened greatly；
Step 5, when the level error of high-pressure side hot well 2 and low-pressure side hot well 3 is less than threshold value, control system control is electronic
Regulating valve 5 is restored to preset value.
Preferably, in step 4, the level error threshold value of high-pressure side hot well 2 and low-pressure side hot well 3 is 1m.
Claims (6)
1. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units, which is characterized in that including with high back pressure
The pure condensate of side and low back pressure side runs or takes out the condensate system (1) of solidifying operation, and high back pressure side steam discharge accesses high-pressure side hot well
(2), low back pressure side steam discharge access low-pressure side hot well (3), high-pressure side hot well (2) and low-pressure side hot well (3) access condensate pump
(4), it is provided with electric control valve (5) on the condensation water outlet line of high-pressure side hot well (2), electric control valve (5) connection control
System, control system are used for according to the water-head of high-pressure side hot well (2) and low-pressure side hot well (3), control high-pressure side hot well (2) into
Enter the condensing water flow of condensate pump entrance main pipe.
2. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units according to claim 1, feature
It is, electric control valve (5) downstream is provided with the manual modulation valve (6) for controlling high-pressure side hot well (2) water flow.
3. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units according to claim 1, feature
It is, condensate pump (4) upstream is provided with the condensed water for controlling high-pressure side hot well (2) and low-pressure side hot well (3) water flow
Pump control valve (7).
4. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units according to claim 1, feature
It is, high-pressure side hot well (2) connects heat supply network return water.
5. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units according to claim 1, feature
It is, low-pressure side hot well (3) connects recirculated cooling water.
6. a kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units according to claim 5, feature
It is, recirculated cooling water is supplied using water circulating pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277925.4U CN208567560U (en) | 2018-02-26 | 2018-02-26 | A kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277925.4U CN208567560U (en) | 2018-02-26 | 2018-02-26 | A kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units |
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| Publication Number | Publication Date |
|---|---|
| CN208567560U true CN208567560U (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820277925.4U Active CN208567560U (en) | 2018-02-26 | 2018-02-26 | A kind of condensed water Water Level Regulating System suitable for double back pressure thermal power plant units |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800976A (en) * | 2018-02-26 | 2018-11-13 | 西安热工研究院有限公司 | A kind of condensed water Water Level Regulating System and method being suitable for double back pressure thermal power plant units |
-
2018
- 2018-02-26 CN CN201820277925.4U patent/CN208567560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800976A (en) * | 2018-02-26 | 2018-11-13 | 西安热工研究院有限公司 | A kind of condensed water Water Level Regulating System and method being suitable for double back pressure thermal power plant units |
| CN108800976B (en) * | 2018-02-26 | 2023-08-22 | 西安热工研究院有限公司 | Condensate water level adjusting system and method suitable for double back pressure heat supply unit |
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