CN203670160U - Roots water ring vacuum pump set of turbine vacuum-pumping system - Google Patents
Roots water ring vacuum pump set of turbine vacuum-pumping system Download PDFInfo
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- CN203670160U CN203670160U CN201420020606.7U CN201420020606U CN203670160U CN 203670160 U CN203670160 U CN 203670160U CN 201420020606 U CN201420020606 U CN 201420020606U CN 203670160 U CN203670160 U CN 203670160U
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Abstract
The utility model relates to a vacuum pump set, in particular to a roots water ring vacuum pump set of a turbine vacuum-pumping system. The roots water ring vacuum pump set structurally comprises a turbine condenser with a turbine condenser extraction opening valve. The turbine condenser is connected with two sets of water ring vacuum pumps through pipelines, wherein the two sets of water ring vacuum pumps are connected with each other in parallel and provided with water ring vacuum pump inlet electric valves. Roots vacuum pumps with roots vacuum pump inlet valves and intercondensers are connected between the turbine condenser and one set of water ring vacuum pumps in series, wherein water ring vacuum pump inlet check valves are further arranged the set of water ring vacuum pumps. Bypass valves are connected between the turbine condenser and the other set of water ring vacuum pumps in series. According to the roots water ring vacuum pump set of the turbine vacuum-pumping system, the roots water ring vacuum pump set can keep the stable pumping speed, and the defect that pumping capacity of traditional water ring vacuum pumps and pumping capacity of a water jet air ejector are reduced when the water temperature is increased is overcome; meanwhile, the further improvement on vacuum of the turbine condenser is facilitated, and high efficiency and energy conservation of the vacuum-pumping system are achieved.
Description
Technical field
The utility model relates to a kind of vacuum pump group, particularly a kind of Roots's water ring vaccum pump group of steam turbine pumped vacuum systems.
Background technique
The vacuum pumping device of tradition steam turbine pumped vacuum systems is all generally to adopt water ring vaccum pump or water jet air ejector, these vaccum-pumping equipments all belong to single aqueous medium vacuum pump, be a kind of coarse vacuum aspirator, and the variation of work water temperature directly affect its pumping performance.In particularly summer, because work water temperature is higher, the pumping performance of vacuum pump sharply declines, and causes a vacuum pump cannot maintain the vacuum of vapour condenser, need to open two vacuum pumps simultaneously, just can maintain the vacuum of vapour condenser, causes vacuum pump energy consumption higher.
Summary of the invention
In order to solve the problem of prior art, the utility model provides a kind of Roots's water ring vaccum pump group of steam turbine pumped vacuum systems, and its exhaust capacity that can overcome traditional water ring vaccum pump and water jet air ejector is with the water temperature impact declining that raises.
The technological scheme that the utility model adopts is as follows:
A kind of Roots's water ring vaccum pump group of steam turbine pumped vacuum systems, comprise the turbine condenser that is provided with turbine condenser bleeding point valve, described turbine condenser connects two groups of water ring vaccum pumps with Water-ring vacuum pump intake mortor operated valve parallel with one another by pipeline, turbine condenser and be wherein serially connected with Roots pump and the intercondenser with Roots pump inlet valve between the water ring vaccum pump described in a group, on this group water ring vaccum pump, be also provided with Water-ring vacuum pump intake non-return flap, between described turbine condenser and the water ring vaccum pump of other a group, be serially connected with bypass valve.
Roots pump is air-cooled Roots vacuum pump.
Intercondenser is arranged between Roots vacuum pump exhaust inlet and water ring vaccum pump intakeport.
The entrance of Roots pump is provided with valve, set valve be electric valve pneumatic valve or manually-operated gate, described valve inlet is connected with the vacuum-pumping pipeline of turbine condenser.
The beneficial effect that the technological scheme that the utility model provides is brought is:
Intake-gas is after the compression of Roots pump, Water-ring vacuum pump inlet pressure improves 1～4 times, make Roots's water ring vaccum pump group can keep stable pumping speed, the exhaust capacity that overcomes traditional water ring vaccum pump and water jet air ejector is with the water temperature impact declining that raises, Water-ring vacuum series connection of pumps Roots pump simultaneously, make the limiting vacuum of Roots pump group improve an order of magnitude than water ring vaccum pump, ultimate pressure reduces 300Pa～500Pa by 3.3KPa, be conducive to further promote the vacuum of steam turbine coagulator, thereby realize the energy-efficient of pumped vacuum systems.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the steam turbine pumped vacuum systems structural drawing under prior art;
Fig. 2 is the structural representation of Roots's water ring vaccum pump group of a kind of steam turbine pumped vacuum systems of the present utility model.
In figure: 1, turbine condenser bleeding point valve, 2, Water-ring vacuum pump intake mortor operated valve, 3, water ring vaccum pump, 4, Roots pump inlet valve, 5, Roots pump, 6, intercondenser, 7, Water-ring vacuum pump intake non-return flap, 8, bypass valve, 9, turbine condenser.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
Embodiment one
As shown in Figure 2, a kind of Roots's water ring vaccum pump group of steam turbine pumped vacuum systems, comprising: Roots pump inlet valve 4, Roots pump 5, intercondenser 6, Water-ring vacuum pump intake non-return flap 7, water ring vaccum pump 3, bypass valve 8 and the pipeline being connected.
Roots's water ring vaccum pump group of the steam turbine pumped vacuum systems providing in the utility model embodiment, as shown in Figure 2, the first bleeding point valve 1 by turbine condenser and vacuumize main pipeline and Roots pump inlet valve 4 enters Roots pump 5 entrances of the vapour gas mixture of extracting out from turbine condenser 9, vapour gas mixture is through becoming after pumping speed Roots pump 5, enter intercondenser 6 condensations, enter water ring vaccum pump 3 entrances through Water-ring vacuum pump intake non-return flap 7, after water ring vaccum pump 3 compressions, incondensable gas enters atmosphere, water recovery Cheng Shui enters receipts liquid pool together with working solution, or after cooling, return the entrance of Water-ring vacuum pump fluid.
Compared with original single water ring vaccum pump or water jet air ejector, Roots's water ring vaccum pump group that what Roots pump 5 formed with water ring vaccum pump 3 connect, can keep the stable pumping speed of Roots's water ring vaccum pump group, the limiting vacuum of vacuum pump group can be improved to an order of magnitude, ultimate pressure reduces 300Pa～500Pa by 3.3KPa, be conducive to further promote the vacuum of steam turbine coagulator, thereby realize the energy-efficient of turbine vacuum system.The pumping speed proportioning of Roots pump 5 and water ring vaccum pump 3 is between 1～4, and the pumping speed of Roots pump 5 is 1～4 times of water ring vaccum pump 3.
Between the entrance of the outlet of Roots pump 5 and water ring vaccum pump 3, set up the intercondenser 6 that can realize gas-liquid separation, the thing gaseous phase outlet that is condensed of intercondenser 6 connects the entrance of water ring vaccum pump 3, the water vapor of vapour gas mixture in Roots pump 5 condenses, the share of the water vapor in cooled vapour gas mixture reduces like this, the non-condensible gas shares such as air increase, the delivery temperature that has simultaneously reduced Roots pump makes the volume shrinkage of non-condensible gas, the inlet pressure of water ring vaccum pump 3 improves 1～4 times, the anti-cavitation performance of water ring vaccum pump 3 is increased dramatically, its pumping performance is more stable, further improve the performance that vacuumizes of turbine vacuum system.
The thing liquid phase that is condensed of intercondenser 6 enters the entrance of water ring vaccum pump 3 together with condensation product gas phase.
The intercondenser 6 providing in embodiment in the utility model is preferably a kind of tubular heat exchanger, the shell side thing of walking to be condensed, and tube side is walked cooling water.
Between Roots vacuum pump intake mortor operated valve 4 and Roots pump 5, can set up augmentor condenser, because from turbine condenser 9 bleeding points vapour gas mixture out, approximately 2/3 is water vapor, vapour gas mixture is after augmentor condenser cooling, water vapor part in vapour gas mixture is condensed, the share of the water vapor in cooled vapour gas mixture reduces like this, the non-condensible gas shares such as air increase, water ring vaccum pump 3 and Roots pump 5 pumping performances are got a promotion, further improve the performance that vacuumizes of steam turbine pumped vacuum systems.
The augmentor condenser providing in embodiment in the utility model both can be a kind of shell-and-tube heat exchanger, the shell side thing of walking to be condensed, and tube side is walked cooling water.The thing import that is condensed is located at top, shell side one end, and the thing gaseous phase outlet that is condensed is located at the top of the shell side the other end, and the thing liquid-phase outlet that is condensed is located at the bottom of shell side.The thing gaseous phase outlet that is condensed of augmentor condenser connects the entrance of Roots pump 5, and the liquid-phase outlet that is preferably augmentor condenser for lime set recycling is directly connected with the shell side of turbine condenser 9.
The augmentor condenser providing in embodiment in the utility model also can be a kind of direct contact heat exchanger, the top of augmentor condenser is provided with desalination cooling water nozzle, middle part, side is provided with the thing gas phase import that is condensed, be condensed after the direct mixed heat transfer of desalination cooling water of thing and atomization and discharged by bottom liquid phases outlet, the liquid-phase outlet that is preferably augmentor condenser for lime set recycling is directly connected with the shell side of turbine condenser 9.
In Roots's water ring vaccum pump group running of steam turbine pumped vacuum systems, total pumping speed proportioning optimum of total pumping speed of Roots pump 5 and water ring vaccum pump 3 is 1-4.Roots pump 5 can be to connect with the water ring vaccum pump 3 of one or one more parallel after one or more parallel converge by pipeline again.
Roots's water ring vaccum pump group of steam turbine pumped vacuum systems, also can be in parallel with existing water ring vaccum pump 3 or water jet air ejector, the utility model embodiment is preferably water ring vaccum pump, when unit normally moves, carried out the vacuum of extraction trubine vacuum system by Roots's water ring vaccum pump group, another water ring vaccum pump 3 is done for subsequent use, when Roots's water ring vaccum pump group breaks down be, open bypass valve 8, water ring vaccum pump 3 for subsequent use puts into operation, further promote the safety reliability of steam turbine pumped vacuum systems, in addition existing water ring vaccum pump 3 can one or a more parallel use, it is two that embodiment of the present utility model is preferably water ring vaccum pump 3.
It is as follows that Roots's water ring vaccum pump group of steam turbine pumped vacuum systems realizes the process vacuumizing: the vapour gas mixture of extracting out from steam turbine gas condensating device 9 first enters Roots pump 5 by turbine condenser bleeding point valve 1 through Roots vacuum pump intake mortor operated valve 4 and augmentor condenser, vapour gas mixture is after Roots pump 5 compressions, enter intercondenser 6, after intercondenser 6 is cooling, entering water ring vaccum pump 3 further compresses, condensable gas after water ring vaccum pump 3 compressions is dissolved in working solution, and incondensable gas is discharged with working solution.
In the utility model, described Roots pump 5 can be common Roots pump, can be also air-cooled Roots vacuum pump.The rotor of Roots pump 5 can be both " 8 " type, can be also three lobe rotor.Roots pump 5 has the feature of the incondensable gases such as condensable gas and air such as pump up water steam, possesses the feature of low energy consumption, the high speed of exhaust simultaneously.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. Roots's water ring vaccum pump group of a steam turbine pumped vacuum systems, comprise the turbine condenser that is provided with turbine condenser bleeding point valve, described turbine condenser connects two groups of water ring vaccum pumps with Water-ring vacuum pump intake mortor operated valve parallel with one another by pipeline, it is characterized in that, described turbine condenser and be wherein serially connected with Roots pump and the intercondenser with Roots pump inlet valve between the water ring vaccum pump described in a group, on this group water ring vaccum pump, be also provided with Water-ring vacuum pump intake non-return flap, between described turbine condenser and the water ring vaccum pump of other a group, be serially connected with bypass valve.
2. Roots's water ring vaccum pump group of a kind of steam turbine pumped vacuum systems according to claim 1, is characterized in that, described Roots pump is air-cooled Roots vacuum pump.
3. Roots's water ring vaccum pump group of a kind of steam turbine pumped vacuum systems according to claim 1, is characterized in that, described intercondenser is arranged between Roots vacuum pump exhaust inlet and water ring vaccum pump intakeport.
4. Roots's water ring vaccum pump group of a kind of steam turbine pumped vacuum systems according to claim 1, it is characterized in that, the entrance of described Roots pump is provided with valve, set valve be electric valve pneumatic valve or manually-operated gate, described valve inlet is connected with the vacuum-pumping pipeline of turbine condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020606.7U CN203670160U (en) | 2014-01-14 | 2014-01-14 | Roots water ring vacuum pump set of turbine vacuum-pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020606.7U CN203670160U (en) | 2014-01-14 | 2014-01-14 | Roots water ring vacuum pump set of turbine vacuum-pumping system |
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| CN203670160U true CN203670160U (en) | 2014-06-25 |
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| CN201420020606.7U Expired - Fee Related CN203670160U (en) | 2014-01-14 | 2014-01-14 | Roots water ring vacuum pump set of turbine vacuum-pumping system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776013A (en) * | 2015-03-06 | 2015-07-15 | 合肥富通机电自动化有限公司 | Vacuum unit for thermal power plant |
| CN106979041A (en) * | 2017-04-01 | 2017-07-25 | 祝凤娟 | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method that cylinder runs thermoelectricity decoupled system |
| CN107062928A (en) * | 2017-02-15 | 2017-08-18 | 北京中电云汇技术有限公司 | One kind vacuumizes compensation Air-Cooling Island system |
| CN107655351A (en) * | 2017-10-25 | 2018-02-02 | 湖南和鑫新能源技术有限公司 | A kind of steam condenser of steam turbine set vacuum with high-low pressure condenser maintains equipment |
| CN108005885A (en) * | 2017-11-29 | 2018-05-08 | 东南大学 | A kind of steam turbine dry and wet mixed conversion control extract system and its operation method |
| CN110566460A (en) * | 2019-08-16 | 2019-12-13 | 华能南京金陵发电有限公司 | Power station roots vacuum pump system with high reliability and efficiency |
| CN112196798A (en) * | 2020-09-28 | 2021-01-08 | 毛政勇 | Integrated energy-saving control system of PCB mill hot press vacuum pump |
-
2014
- 2014-01-14 CN CN201420020606.7U patent/CN203670160U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776013A (en) * | 2015-03-06 | 2015-07-15 | 合肥富通机电自动化有限公司 | Vacuum unit for thermal power plant |
| CN107062928A (en) * | 2017-02-15 | 2017-08-18 | 北京中电云汇技术有限公司 | One kind vacuumizes compensation Air-Cooling Island system |
| CN106979041A (en) * | 2017-04-01 | 2017-07-25 | 祝凤娟 | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method that cylinder runs thermoelectricity decoupled system |
| CN106979041B (en) * | 2017-04-01 | 2018-06-19 | 晟源高科(北京)科技有限公司 | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method of cylinder operation thermoelectricity decoupled system |
| CN107655351A (en) * | 2017-10-25 | 2018-02-02 | 湖南和鑫新能源技术有限公司 | A kind of steam condenser of steam turbine set vacuum with high-low pressure condenser maintains equipment |
| CN108005885A (en) * | 2017-11-29 | 2018-05-08 | 东南大学 | A kind of steam turbine dry and wet mixed conversion control extract system and its operation method |
| CN108005885B (en) * | 2017-11-29 | 2019-09-24 | 东南大学 | A kind of steam turbine dry and wet mixed conversion control extract system and its operation method |
| CN110566460A (en) * | 2019-08-16 | 2019-12-13 | 华能南京金陵发电有限公司 | Power station roots vacuum pump system with high reliability and efficiency |
| CN112196798A (en) * | 2020-09-28 | 2021-01-08 | 毛政勇 | Integrated energy-saving control system of PCB mill hot press vacuum pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20160114 |
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| EXPY | Termination of patent right or utility model |