CN205049002U - High -efficient vacuum economizer system of condenser - Google Patents
High -efficient vacuum economizer system of condenser Download PDFInfo
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- CN205049002U CN205049002U CN201520756294.0U CN201520756294U CN205049002U CN 205049002 U CN205049002 U CN 205049002U CN 201520756294 U CN201520756294 U CN 201520756294U CN 205049002 U CN205049002 U CN 205049002U
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Abstract
The utility model provides a high -efficient vacuum economizer system of condenser, including the condenser and with the vacuum pumping system subassembly that the condenser outlet duct is established ties, vacuum pumping system subassembly output is connected with the blast pipe, includes still that the vacuum maintains the system, the vacuum maintain the system with condenser outlet duct intercommunication, and with the vacuum pumping system subassembly is parallelly connected to be set up, the system is kept including admit air manual valve and the multistage roots's pump package that connect gradually in the vacuum, admit air manual valve input with the condenser blast pipe is connected, multistage roots's pump package with the blast pipe is connected. The beneficial effects of the utility model are that when turbo generator set normal operating, when stabilize in the vacuum, system operation, the operation of vacuum pumping system subassembly time -out are maintain to the vacuum, and the vacuum is maintain and is equipped with the efficient multistage lobe pump of low energy consumption in the system to reach energy -conserving mesh.
Description
Technical field
The utility model relates to condenser of power plant pumped vacuum systems, particularly relates to a kind of condenser high-efficiency vacuum energy conserving system.
Background technology
The conventional pumped vacuum systems in thermal power plant generally installs the vavuum pump of two relatively high powers, they vacuumize condenser and each pipe-line system that is connected when unit starting, until generating set drops into stable operation, still keep vavuum pump running status to maintain the vacuum of condenser, just out of service after generating set is stopped transport completely, the function of conventional vacuum pump has two: one to be set up vacuum at the unit starting initial stage; Two is in unit normally runs, and constantly extracts the incoagulable gas of the vacuum pump system that bleeds out vacuum system, to maintain the high vacuum state of system.
If different by two power consumptions respectively but its end vacuum performance is identical and the speed of exhaust is all greater than vacuum system leak rate vavuum pump vacuumizes same system, if do not considered pumpdown time, finally these two vavuum pumps can be extracted into identical vacuum system and maintain high vacuum state.
But, conventional vacuum pump according to maximum load design of bleeding, the individual capacity of steam turbine producer configuration vapor extractor (vavuum pump) with factor below for design considerations: the exhaust steam pressure that (1) allows air leakage (2) to set; (3) vapour of air ejector, gas mixture degree of supercooling is entered, in these factors, " permission air leakage " is a first-selected index, (4) meet the predetermined pumpdown time in power station, be open the Main Basis that the machine stage selects vavuum pump, the pumpdown time is generally within 30 minutes.For 600MW unit, it allows air leakage to be 117.5 kgs/hour, and the gas leakage generally in actual motion only has 23 kgs/hour, therefore, in unit normally runs, extract the gas leakage of seldom amount with the vavuum pump of design, its power consumption is obviously higher.
Conventional vacuum pump is according to maximum load design of bleeding, therefore, its power consumption is higher, but, in actual production, when unit is under accidental conditions, bleed the air capacity of condenser much smaller than the design rate of air sucked in required of vavuum pump, therefore, now can by a small-power but the vavuum pump that end vacuum performance and suction performance can meet the requirement of system held high vacuum state substitutes former design highly energy-consuming vavuum pump, to reach energy-conservation object.
In normal operation, the vacuum of condenser is that steam condensation is formed, instead of be pumped into by vavuum pump, the effect of vavuum pump is now only outside a small amount of incondensable gas extraction system vacuum system of bleeding.In practice, we find, the current curve that vavuum pump runs is one to draw a bow type, that is, when not setting up vacuum or vacuum values is lower in initial start stage, the running current of vavuum pump raises with vacuum values and increases, when vacuum reaches certain null value, vavuum pump electric current reaches maximum, subsequently along with the raising of vacuum, the minimizing of the incondensable gas amount of condenser, vavuum pump electric current is decrescence few, and when condenser vacuum is stablized, vavuum pump current stabilization is at a less numerical value; When doing steam turbine vacuum leak test, regardless of vavuum pump, only closing vavuum pump inlet shutoff valve, can find that the curent change of vavuum pump is little, above explanation, the power consumption major part of vavuum pump has consumed in the hydraulic resistance of water ring pump.So unit is in normal operation, and only have a small amount of noncondensing air to have bled vacuum system, less load, but uses powerful vacuum pump, cause very large waste of energy.
Moreover at present, domestic thermal power plant condenser vaccum-pumping equipment generally applies the equipment of the high energy consumption poor efficiency such as water jet air ejector, stream-jet ejector and the true pump group of air-water ring, and energy consumption poor efficiency is low.
Utility model content
In order to solve the problems of the prior art, the utility model provides a kind of condenser high-efficiency vacuum energy conserving system.
The utility model provides a kind of condenser high-efficiency vacuum energy conserving system, the pumped vacuum systems assembly comprising condenser and connect with the escape pipe of described condenser, described pumped vacuum systems assembly output is connected with blast pipe, also comprise vacuum and maintain system, described vacuum maintains system and is communicated with described escape pipe, and arrange with described pumped vacuum systems modules in parallel, described vacuum maintains system and comprises the air inlet hand-operated valve and multi-stage roots pump group that connect successively, described air inlet hand-operated valve input is connected with described blast pipe, described multi-stage roots pump group is connected with described blast pipe.
As further improvement of the utility model, described vacuum maintains system and also comprises air inlet quick-break magnetic valve, described air inlet quick-break magnetic valve input is connected with described air inlet hand-operated valve output, and described air inlet quick-break magnetic valve output is connected with described multi-stage roots pump group input.
As further improvement of the utility model, described multi-stage roots pump group is multi-stage roots-water ring vacuum pump group.
As further improvement of the utility model, described pumped vacuum systems assembly is two groups and is arranged in parallel.
As further improvement of the utility model, described pumped vacuum systems assembly comprises the first hand-operated valve, air-water ring vacuum pump group and the second hand-operated valve that connect successively, described first hand-operated valve input is connected with described escape pipe, and described second hand-operated valve is connected with described blast pipe.
The beneficial effects of the utility model are: when Turbo-generator Set normally run, vacuum stablize time, vacuum maintains system cloud gray model, pumped vacuum systems assembly operation suspension, be provided with the multi-stage roots pump of low-energy-consumption high-efficiency in vacuum maintenance system, thus reach energy-conservation object.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of condenser high-efficiency vacuum of the utility model energy conserving system.
Detailed description of the invention
Reference numeral: 1-condenser 2-pumped vacuum systems assembly 3-vacuum maintains system 4-blast pipe 11-escape pipe 21-first hand-operated valve 22-second hand-operated valve 31-air inlet hand-operated valve 32-air inlet quick-break magnetic valve 33-multi-stage roots pump group.
As shown in Figure 1, the utility model discloses a kind of condenser high-efficiency vacuum energy conserving system, the pumped vacuum systems assembly 2 comprising condenser 1 and connect with the escape pipe 11 of described condenser 1, described pumped vacuum systems assembly 2 output is connected with blast pipe 11, it is characterized in that: also comprise vacuum and maintain system 3, described vacuum maintains system 3 and is communicated with described escape pipe 11, and be arranged in parallel with described pumped vacuum systems assembly 2, described vacuum maintains system 3 and comprises the air inlet hand-operated valve 31 and multi-stage roots pump group 33 that connect successively, described air inlet hand-operated valve 31 input is connected with described blast pipe 4, described multi-stage roots pump group 33 is connected with described blast pipe 4.
Described vacuum maintains system 3 and also comprises air inlet quick-break magnetic valve 32, and described air inlet quick-break magnetic valve 32 input is connected with described air inlet hand-operated valve 31 output, and described air inlet quick-break magnetic valve 32 output is connected with described multi-stage roots pump group 33 input.
Described multi-stage roots pump group 33 is multi-stage roots-water ring vacuum pump group.
Described pumped vacuum systems assembly 2 is two groups and is arranged in parallel.
Described pumped vacuum systems assembly 2 comprises the first hand-operated valve 21, air-water ring vacuum pump group and the second hand-operated valve 22 that connect successively, and described first hand-operated valve 21 input is connected with described escape pipe 11, and described second hand-operated valve 22 is connected with described blast pipe 4.
When Turbo-generator Set starts, pumped vacuum systems assembly 2 runs, vacuum maintains system 3 and closes, until generating set drops into stable operation, now pumped vacuum systems assembly 2 is closed, vacuum maintains system 3 and runs, this vacuum maintains system 3 can according to the change of the vacuum of steam turbine, change the pumping speed of vavuum pump group, with entering institute's intake-gas after the compression of Roots vaccum pump, fore vacuum pump inlet pressure improves 5 times, multi-stage roots pump group 33 is made to keep stable pumping speed, the exhaust capacity overcoming water ring vacuum pump and water jet air ejector to heat up high and impact that is that decline with water temperature, thus realize the energy-efficient of pumped vacuum systems, reach energy-conservation object.
Vacuum can be maintained system 3 by air inlet hand-operated valve 31 isolates with pumped vacuum systems assembly 2, air inlet quick-break magnetic valve 32 quick closedown when when multi-stage roots pump group 33 fault or tripping operation or power-off, maintains system 3 and isolates fast with pumped vacuum systems assembly 2 by vacuum.
When Turbo-generator Set normally run, vacuum stablize time, vacuum maintains that system 3 is run, pumped vacuum systems assembly 2 operation suspension, and vacuum maintains in system 3 the multi-stage roots pump group 33 being provided with low-energy-consumption high-efficiency, thus reaches energy-conservation object.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. a condenser high-efficiency vacuum energy conserving system, the pumped vacuum systems assembly comprising condenser and connect with the escape pipe of described condenser, described pumped vacuum systems assembly output is connected with blast pipe, it is characterized in that: also comprise vacuum and maintain system, described vacuum maintains system and is communicated with described escape pipe and arranges with described pumped vacuum systems modules in parallel, described vacuum maintains system and comprises the air inlet hand-operated valve and multi-stage roots pump group that connect successively, described air inlet hand-operated valve input is connected with described blast pipe, and described multi-stage roots pump group is connected with described blast pipe.
2. condenser high-efficiency vacuum energy conserving system according to claim 1, it is characterized in that: described vacuum maintains system and also comprises air inlet quick-break magnetic valve, described air inlet quick-break magnetic valve input is connected with described air inlet hand-operated valve output, and described air inlet quick-break magnetic valve output is connected with described multi-stage roots pump group input.
3. condenser high-efficiency vacuum energy conserving system according to claim 2, is characterized in that: described multi-stage roots pump group is multi-stage roots-water ring vacuum pump group.
4. condenser high-efficiency vacuum energy conserving system according to claim 1, is characterized in that: described pumped vacuum systems assembly is two groups and is arranged in parallel.
5. condenser high-efficiency vacuum energy conserving system according to claim 4, it is characterized in that: described pumped vacuum systems assembly comprises the first hand-operated valve, air-water ring vacuum pump group and the second hand-operated valve that connect successively, described first hand-operated valve input is connected with described escape pipe, and described second hand-operated valve is connected with described blast pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756294.0U CN205049002U (en) | 2015-09-28 | 2015-09-28 | High -efficient vacuum economizer system of condenser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756294.0U CN205049002U (en) | 2015-09-28 | 2015-09-28 | High -efficient vacuum economizer system of condenser |
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| CN205049002U true CN205049002U (en) | 2016-02-24 |
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| CN201520756294.0U Active CN205049002U (en) | 2015-09-28 | 2015-09-28 | High -efficient vacuum economizer system of condenser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907939A (en) * | 2017-04-21 | 2017-06-30 | 河北冀研能源科学技术研究院有限公司 | Newly-built condenser of power plant vacuumizes operation maintenance system and its operation method |
| CN108731501A (en) * | 2017-10-25 | 2018-11-02 | 江苏核电有限公司 | Energy saver and power-economizing method for the optimization of vacuum water-jet pump system operation mode |
| CN110542324A (en) * | 2019-09-06 | 2019-12-06 | 浙江浙能技术研究院有限公司 | Device for improving running efficiency of parallel vacuum-pumping system and control method thereof |
-
2015
- 2015-09-28 CN CN201520756294.0U patent/CN205049002U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907939A (en) * | 2017-04-21 | 2017-06-30 | 河北冀研能源科学技术研究院有限公司 | Newly-built condenser of power plant vacuumizes operation maintenance system and its operation method |
| CN108731501A (en) * | 2017-10-25 | 2018-11-02 | 江苏核电有限公司 | Energy saver and power-economizing method for the optimization of vacuum water-jet pump system operation mode |
| CN108731501B (en) * | 2017-10-25 | 2024-06-07 | 江苏核电有限公司 | Energy-saving device and energy-saving method for optimizing operation mode of vacuum water jet pump system |
| CN110542324A (en) * | 2019-09-06 | 2019-12-06 | 浙江浙能技术研究院有限公司 | Device for improving running efficiency of parallel vacuum-pumping system and control method thereof |
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