CN107560451A - A kind of energy-saving type vacuum device - Google Patents
A kind of energy-saving type vacuum device Download PDFInfo
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- CN107560451A CN107560451A CN201710967138.2A CN201710967138A CN107560451A CN 107560451 A CN107560451 A CN 107560451A CN 201710967138 A CN201710967138 A CN 201710967138A CN 107560451 A CN107560451 A CN 107560451A
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- ring vacuum
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 239000012224 working solution Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Jet Pumps And Other Pumps (AREA)
Abstract
The present invention relates to a kind of energy-saving type vacuum device, including condenser, condenser hotwell, condensing main pipe, the first water ring vacuum pump system, condensing branch pipe, condensing pipeline non-return valve, condensing pipeline flowmeter, condensing pipeline pressure transmitter, condensing pipeline thermal resistance, condensing pipeline isolating valve, condensing pipeline pneumatic operated valve, power steam regulating valve, steam jet ejector, pipe heat exchanger, steam trap, hydrophobic pneumatic operated valve, contact pneumatic operated valve, contact isolating valve and the second water ring vacuum pump；The present invention substitutes the first water ring vacuum pump system by using pipe heat exchanger and low power second water ring vacuum pump, it can maintain and condenser vacuum is provided, ensure condenser is in optimum condition, is not influenceed by variation of ambient temperature, remain stable suction capactity, condenser vacuum is improved, reduces the gross coal consumption rate of unit, reduces the operation power consumption of pumped vacuum systems, the reliable safety of system equipment, maintenance workload is few, and no cavitation phenomenons produces, no high noisy and oscillation phenomenon.
Description
Technical field
The present invention relates to vacuum pumping technology field, more particularly to a kind of energy-saving type vacuum device and its control method.
Background technology
Condenser is one of visual plant of thermal power generation unit, what the vacuum values of condenser were run to Turbo-generator Set
It is economical to have a major impact.The factor for influenceing condenser vacuum has a lot, wherein it is most directly vacuum tightness, cooling to influence
Coolant-temperature gage, cooling water inflow, the working characteristics etc. of water ring vacuum pump.Current domestic 300MW and ratings above generating set condensing
Device pumped vacuum systems is had the disadvantages that using configuration 2 or 3 water-ring vacuum pump assemblies, water ring vacuum pump more：
1st, the working solution temperature of water ring vacuum pump is influenceed very big by cooling water temperature, and environment temperature is to influence cooling water
An important factor for temperature, especially in summer, cooling water temperature reaches spends more 30, working solution temperature poor plus the end of heat exchanger
More than 40 degree even can be reached.Under vacuum, the working solution of water ring vacuum pump largely vaporizes generation cavitation phenomenons, and then
There is the problems such as vibration and noise, the suction properties of water ring vacuum pump substantially reduce, can not be in time by the dry air in condenser
Take away, and then influence condenser vacuum, have a strong impact on the safe and stable operation of unit and the economy of operation；
2nd, traditional unit pumped vacuum systems, water ring vacuum pump are that the requirement that vacuum is established according to unit is configured, if
Standby operation power consumption is big, in the case where maintaining the service condition of unit vacuum, there is very big consumption reduction space；
3rd, because also having the non-condensing gas in part and water in the condensing pipeline of unit in vapour gas mixture, if eliminating this
Part is noncondensing gas and water, and the type selecting of water ring vacuum pump is expected to reduce；
4th, water ring vacuum pump is rotating machinery, and damage in impeller adds the generation of cavitation phenomenons, and the workload of regular maintenance is very
Greatly.
Based on this, it is necessary to which a kind of energy-saving type vacuum device that control is adjusted according to condenser actual condition is devised
Come.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, obtains a kind of energy-saving type vacuum device.
The present invention is to be achieved through the following technical solutions：
A kind of energy-saving type vacuum device, including condenser, condenser hotwell, condensing main pipe and the first water ring vacuum pump system
System, in addition to condensing branch pipe, condensing pipeline non-return valve, condensing pipeline flowmeter, condensing pipeline pressure transmitter, condensing pipeline heat
It is resistance, condensing pipeline isolating valve, condensing pipeline pneumatic operated valve, power steam regulating valve, steam jet ejector, pipe heat exchanger, hydrophobic
Device, hydrophobic pneumatic operated valve, contact pneumatic operated valve, contact isolating valve and the second water ring vacuum pump；
Wherein, condenser hotwell is provided with below the condenser, the outlet connection condensing main pipe of the condenser is described
The other end of condensing main pipe is connected to the entrance of the first water ring vacuum pump system, and the outlet of first water ring vacuum pump system connects
Be connected to air, condensing branch pipe be connected with the condensing main pipe, be disposed with the condensing branch pipe condensing pipeline non-return valve,
Condensing pipeline flowmeter, condensing pipeline pressure transmitter, condensing pipeline thermal resistance, condensing pipeline isolating valve, condensing conduit pipe pneumatically
Valve, the other end of the condensing branch pipe are connected to the suction inlet of steam jet ejector, are provided with the entrance of the steam jet ejector
Power steam regulating valve, adjustable nozzles is provided with the steam jet ejector, the outlet of the steam jet ejector is connected to pipe
The entrance of formula heat exchanger, cooling water supply pipe and CWR is also associated with the pipe heat exchanger, the tubular type is changed
The outlet of hot device is connected to the entrance of the second water ring vacuum pump, and the outlet of second water ring vacuum pump is connected to air, described
Second water ring vacuum pump connects the first water ring vacuum pump system by getting in touch with isolating valve with contact pneumatic operated valve, and second water ring is true
The power of empty pump is less than the power of the first water ring vacuum pump system.
The present invention further improvement is that, the power steam regulating valve is according to the actual measurement number of condensing pipeline pressure transmitter
The gearshift adjustment of pressure is carried out according to the difference between design pressure.
The present invention further improvement is that, when the measured data of condensing pipeline pressure transmitter is less than 0.3Mpa, first
Water ring vacuum pump system is run, and the second water ring vacuum pump exits.
The present invention further improvement is that, when the outlet temperature of pipe heat exchanger is more than desired temperature, the first water ring
Vacuum pump system is run, and the second water ring vacuum pump exits.
The present invention further improvement is that, when the outlet pressure of pipe heat exchanger is more than pressure set points, the first water ring
Vacuum pump system is run, and the second water ring vacuum pump exits.
The present invention further improvement is that, steam trap is provided with below the pipe heat exchanger, the steam trap, which passes through, to be dredged
Water pneumatic operated valve is connected to condenser hotwell.
The present invention further improvement is that, the signal access DCS control systems of collection in device, entered by DCS control systems
Row adjustment control.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention calculates steaming according to factors such as the load of unit, vacuum tightness, cooling water temperature, cooling water inflows
The power steam total amount and jet coefficient of vapour injector, and the adjustable nozzles of steam jet ejector are adjusted to required aperture, it is full
Foot maintains and improves the needs of unit vacuum, it is ensured that unit obtains maximum energy-saving effect；
2nd, the present invention is using the vapour gas mixture in the principle suction condenser of steam jet ejector, it is ensured that condenser is located all the time
In high vacuum state；
3rd, the present invention improves the inlet pressure of water ring vacuum pump by steam jet ejector, makes the working solution vapour of water ring vacuum pump
The temperature difference changed between temperature and the actual temperature of working solution reaches more than 10 DEG C, avoids the production of water ring vacuum pump cavitation phenomenons
It is raw；
4th, the power steam that power steam regulating valve and condensing pipeline pressure transmitter are formed in the present invention automatically adjusts
System, the difference between the data and pressure set points that are measured according to condensing pipeline pressure transmitter carry out gearshift adjustment, suppressed
The pressure oscillation of power steam；
5th, the present invention substitutes the first water ring vacuum pump by using pipe heat exchanger and low power second water ring vacuum pump
System, it can maintain and condenser vacuum is provided, ensure condenser is in optimum condition, is not influenceed by variation of ambient temperature, begins
Stable suction capactity is kept eventually, is improved condenser vacuum, is reduced the gross coal consumption rate of unit, reduces the operation of pumped vacuum systems
Power consumption, the reliable safety of system equipment, maintenance workload is few, and no cavitation phenomenons produces, no high noisy and oscillation phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, a kind of energy-saving type vacuum device, including condenser 1, condenser hotwell 15, condensing main pipe 2 and first
Water ring vacuum pump system 17, in addition to condensing branch pipe 18, condensing pipeline non-return valve 11, condensing pipeline flowmeter 10, condensing pipeline
Pressure transmitter 9, condensing pipeline thermal resistance 8, condensing pipeline isolating valve 7, condensing pipeline pneumatic operated valve 6, power steam regulating valve 3,
Steam jet ejector 4, pipe heat exchanger 5, steam trap 12, hydrophobic pneumatic operated valve 21, contact pneumatic operated valve 13, contact isolating valve 14 and second
Water ring vacuum pump 16；
Wherein, the lower section of condenser 1 is provided with condenser hotwell 15, the outlet connection condensing main pipe of the condenser 1
2, the other end of the condensing main pipe 2 is connected to the entrance of the first water ring vacuum pump system 17, the first water ring vacuum pump system
The outlet of system 17 is connected to air, and condensing branch pipe 18 is connected with the condensing main pipe 2, is set gradually on the condensing branch pipe 18
There are condensing pipeline non-return valve 11, condensing pipeline flowmeter 10, condensing pipeline pressure transmitter 9, condensing pipeline thermal resistance 8, condensing
Pipeline isolation valve 7, condensing pipeline pneumatic operated valve 6, configuration condensing pipeline non-return valve 11 can prevent energy-saving type vacuum device from leaking vacuum
Phenomenon occur, increase the reliability and security of equipment, the other end of the condensing branch pipe 18 is connected to steam jet ejector 4
Suction inlet, power steam regulating valve 3 is provided with the entrance of the steam jet ejector 4, being provided with the steam jet ejector 4 can
Nozzle is adjusted, the outlet of the steam jet ejector 4 is connected to the entrance of pipe heat exchanger 5, is also connected with the pipe heat exchanger 5
There are cooling water supply pipe 19 and CWR 20, according to the load of unit, vacuum tightness, cooling water temperature, cooling water
The factors such as amount, the power steam total amount and jet coefficient of steam jet ejector 4 are calculated, and the power jet of steam jet ejector is adjusted
Section meets to maintain and improves the needs of unit vacuum, can ensure that unit obtains maximum energy-saving effect, institute to required aperture
The outlet for stating pipe heat exchanger 5 is connected to the entrance of the second water ring vacuum pump 16, and the pipe heat exchanger 5 is responsible for spraying steam
Non-condensing gas condensation Cheng Shui in the power steam and condenser 1 of device 4, and the inlet pressure of the second water ring vacuum pump 16 is carried
Height, the temperature difference between its corresponding working solution vapourizing temperature and working solution actual temperature is set to reach more than 10 DEG C, it is ensured that second
Water ring vacuum pump 16 will not produce cavitation phenomenons, and the outlet of second water ring vacuum pump 16 is connected to air, second water
Ring vacuum pump 16 connects the first water ring vacuum pump system 17 by getting in touch with isolating valve 14 and contact pneumatic operated valve 13, it is ensured that in the second water
Ring vacuum pump 16 break down when, steam jet ejector 4 can the first water ring vacuum pump system of band 17 run, maintain and improve unit
Vacuum, the power of second water ring vacuum pump 16 are less than the power of the first water ring vacuum pump system 17.
When it is implemented, measured data and design of the power steam regulating valve 3 according to condensing pipeline pressure transmitter 9
Difference between pressure carries out the gearshift adjustment of pressure, and the need of work of steam jet ejector 4 of energy-saving type vacuum device provides stabilization
The power steam of pressure, therefore according to the design pressure of power steam pressure will be set to automatically control in the controls, according to
Difference between power steam pressure and design pressure that condensing pipeline pressure transmitter 9 is surveyed, enters to power steam regulating valve 3
Row aperture regulation.Meanwhile in order that whole control process occurs without big pressure oscillation, therefore will be implemented according to the size of difference
Different governing speeds, effectively suppress the pressure oscillation of power steam.
When it is implemented, when the measured data of condensing pipeline pressure transmitter 9 is less than 0.3Mpa, the first water ring vacuum pump
System 17 is run, and the second water ring vacuum pump 16 exits.
When it is implemented, when the outlet temperature of pipe heat exchanger 5 is more than desired temperature, the first water ring vacuum pump system
Operation 17, the second water ring vacuum pump 16 exits.
When it is implemented, when the outlet pressure of pipe heat exchanger 5 is more than pressure set points, the first water ring vacuum pump system
17 operations, the second water ring vacuum pump 16 exit.
When it is implemented, the lower section of pipe heat exchanger 5 is provided with steam trap 12, the steam trap 12 passes through hydrophobic pneumatic
Valve 21 is connected to condenser hotwell 15, it is ensured that the pressure of drain port is more than the position of opening pressure of condenser hotwell 15, makes tubular type
The hydrophobic of heat exchanger 5 can smoothly be discharged into condenser hotwell 15.
When it is implemented, the signal of collection accesses DCS control systems in device, control is adjusted by DCS control systems.
The present invention work when running situation be：
During unit starting, started using the first water ring vacuum pump system 17；After unit normal operation, the second water ring is true
Empty pump 16 is put into, and the first water ring vacuum pump system 17 is out of service；If the second water ring vacuum pump 16 breaks down, or operations staff
Send and exit request, the first water ring vacuum pump system 17 puts into operation, and the second water ring vacuum pump 16 exits；If the second Water-ring vacuum
The Failure elimination of pump 16, or operations staff are needed to put into again, then the second water ring vacuum pump 16 is put into, the first water ring vacuum pump system
17 exit.
The present invention is in addition to the second water ring vacuum pump 16, the first water-ring vacuum system 17, no-rotary part, no mechanical wear,
Without current consuming apparatus, ensure the suction properties of energy-saving type vacuum device is not influenceed by environment temperature, can be according to the load of unit, true
The factors such as empty tightness, cooling water temperature, cooling water inflow, selection provide different output, and the application of pipe heat exchanger 5 and
The inlet pressure of water ring vacuum pump is improved, the vapour gas mixture volume flow of the entrance of the second water ring vacuum pump 16 reduces, equipment electricity
Consumption reduces by 70%~90%.
In summary, the present invention proposes the plant issue for solving in the presence of generating set prior art, also reaches
At utmost realize the energy-saving purpose of unit.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of energy-saving type vacuum device, including condenser, condenser hotwell, condensing main pipe and the first water ring vacuum pump system,
Characterized in that, also include condensing branch pipe, condensing pipeline non-return valve, condensing pipeline flowmeter, condensing pipeline pressure transmitter, solidifying
Steam pipe road thermal resistance, condensing pipeline isolating valve, condensing pipeline pneumatic operated valve, power steam regulating valve, steam jet ejector, pipe type heat transfer
Device, steam trap, hydrophobic pneumatic operated valve, contact pneumatic operated valve, contact isolating valve and the second water ring vacuum pump；
Wherein, condenser hotwell, the outlet connection condensing main pipe of the condenser, the condensing are provided with below the condenser
The other end of main pipe is connected to the entrance of the first water ring vacuum pump system, and the outlet of first water ring vacuum pump system is connected to
Air, condensing branch pipe is connected with the condensing main pipe, condensing pipeline non-return valve, condensing are disposed with the condensing branch pipe
Pipeline flowmeter, condensing pipeline pressure transmitter, condensing pipeline thermal resistance, condensing pipeline isolating valve, condensing pipeline pneumatic operated valve, institute
The other end for stating condensing branch pipe is connected to the suction inlet of steam jet ejector, and dynamic steaming is set on the entrance of the steam jet ejector
Steam control valve, adjustable nozzles is provided with the steam jet ejector, the outlet of the steam jet ejector is connected to pipe type heat transfer
The entrance of device, cooling water supply pipe and CWR are also associated with the pipe heat exchanger, the pipe heat exchanger
Outlet is connected to the entrance of the second water ring vacuum pump, and the outlet of second water ring vacuum pump is connected to air, second water
Ring vacuum pump connects the first water ring vacuum pump system by getting in touch with isolating valve with contact pneumatic operated valve, second water ring vacuum pump
Power is less than the power of the first water ring vacuum pump system.
A kind of 2. energy-saving type vacuum device according to claim 1, it is characterised in that：The power steam regulating valve according to
Difference between the measured data and design pressure of condensing pipeline pressure transmitter carries out the gearshift adjustment of pressure.
A kind of 3. energy-saving type vacuum device according to claim 1, it is characterised in that：When condensing pipeline pressure transmitter
When measured data is less than 0.3Mpa, the first water ring vacuum pump system operation, the second water ring vacuum pump exits.
A kind of 4. energy-saving type vacuum device according to claim 1, it is characterised in that：When the outlet temperature of pipe heat exchanger
During more than desired temperature, the first water ring vacuum pump system operation, the second water ring vacuum pump exits.
A kind of 5. energy-saving type vacuum device according to claim 1, it is characterised in that：When the outlet pressure of pipe heat exchanger
During more than pressure set points, the first water ring vacuum pump system operation, the second water ring vacuum pump exits.
A kind of 6. energy-saving type vacuum device according to claim 1, it is characterised in that：Also set below the pipe heat exchanger
Steam trap is equipped with, the steam trap is connected to condenser hotwell by hydrophobic pneumatic operated valve.
A kind of 7. energy-saving type vacuum device according to claim 1, it is characterised in that：The signal access of collection in device
DCS control systems, control is adjusted by DCS control systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967138.2A CN107560451B (en) | 2017-10-17 | 2017-10-17 | Energy-saving vacuum device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967138.2A CN107560451B (en) | 2017-10-17 | 2017-10-17 | Energy-saving vacuum device |
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| Publication Number | Publication Date |
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| CN107560451A true CN107560451A (en) | 2018-01-09 |
| CN107560451B CN107560451B (en) | 2023-09-01 |
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| CN201710967138.2A Active CN107560451B (en) | 2017-10-17 | 2017-10-17 | Energy-saving vacuum device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443030A (en) * | 2018-10-31 | 2019-03-08 | 武汉艾德沃泵阀有限公司 | A kind of vacuum plant suitable for air cooling unit |
| CN112344757A (en) * | 2020-11-28 | 2021-02-09 | 桂林市深能环保有限公司 | An anti-water accumulation device for vacuuming the condenser of a power plant |
| CN114264163A (en) * | 2021-12-16 | 2022-04-01 | 华能国际电力股份有限公司丹东电厂 | Condenser water side vacuum pumping system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61110877A (en) * | 1984-11-02 | 1986-05-29 | Hitachi Ltd | Condenser vacuum pump equipment |
| CN103940256A (en) * | 2014-04-11 | 2014-07-23 | 张曙光 | Power plant condenser steam jet and vacuumizing system with pressure control function |
| CN203772051U (en) * | 2014-04-11 | 2014-08-13 | 张曙光 | Multistage steam ejector vacuum-pumping system of double backpressure condensers |
| CN204064016U (en) * | 2014-09-04 | 2014-12-31 | 程晋瑞 | A kind of condenser steam injection vacuum system energy-saving for new power plant construction |
| CN205825746U (en) * | 2016-05-31 | 2016-12-21 | 廖倩 | A kind of plant condenser pumped vacuum systems |
| CN206387279U (en) * | 2017-01-05 | 2017-08-08 | 陆明 | The changeable vapor injection vacuum pumping system of three-level of low steam consumption |
-
2017
- 2017-10-17 CN CN201710967138.2A patent/CN107560451B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110877A (en) * | 1984-11-02 | 1986-05-29 | Hitachi Ltd | Condenser vacuum pump equipment |
| CN103940256A (en) * | 2014-04-11 | 2014-07-23 | 张曙光 | Power plant condenser steam jet and vacuumizing system with pressure control function |
| CN203772051U (en) * | 2014-04-11 | 2014-08-13 | 张曙光 | Multistage steam ejector vacuum-pumping system of double backpressure condensers |
| CN204064016U (en) * | 2014-09-04 | 2014-12-31 | 程晋瑞 | A kind of condenser steam injection vacuum system energy-saving for new power plant construction |
| CN205825746U (en) * | 2016-05-31 | 2016-12-21 | 廖倩 | A kind of plant condenser pumped vacuum systems |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443030A (en) * | 2018-10-31 | 2019-03-08 | 武汉艾德沃泵阀有限公司 | A kind of vacuum plant suitable for air cooling unit |
| CN112344757A (en) * | 2020-11-28 | 2021-02-09 | 桂林市深能环保有限公司 | An anti-water accumulation device for vacuuming the condenser of a power plant |
| WO2022110831A1 (en) * | 2020-11-28 | 2022-06-02 | 桂林市深能环保有限公司 | Water accumulation prevention device for evacuating power plant condenser |
| CN114264163A (en) * | 2021-12-16 | 2022-04-01 | 华能国际电力股份有限公司丹东电厂 | Condenser water side vacuum pumping system |
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| Publication number | Publication date |
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| CN107560451B (en) | 2023-09-01 |
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