CN203488333U - Steam turbine vacuum-pumping system - Google Patents
Steam turbine vacuum-pumping system Download PDFInfo
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- CN203488333U CN203488333U CN201320639995.7U CN201320639995U CN203488333U CN 203488333 U CN203488333 U CN 203488333U CN 201320639995 U CN201320639995 U CN 201320639995U CN 203488333 U CN203488333 U CN 203488333U
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- steam turbine
- connecting tube
- pump
- vacuum pump
- condenser
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Abstract
The utility model relates to the field of a vacuum-pumping system, and in particular relates to a steam turbine vacuum-pumping system. The steam turbine vacuum-pumping system comprises a steam turbine condenser, a dry vacuum pump, a main pipeline and a first connecting pipeline, wherein one end of the main pipeline is connected with an extract port of the steam turbine condenser, the other end of the main pipeline is connected with one end of the first connecting pipeline; an inlet of the dry vacuum pump is connected with the other end of the first connecting pipeline. As water is not required to be used as a vacuum-pumping medium in the steam turbine vacuum-pumping system, the water medium restriction of an existing water ring vacuum pump and an existing water jet air ejector is broken, the influence of increment of the water temperature to the decrement of the pumping property of the water ring vacuum pump and the water jet air ejector is avoided, the existing water ring vacuum pump and the existing water jet air ejector are transformed to directly pump steam-gas mixed gas of the condenser, so that the high-efficiency and energy-saving effects can be realized.
Description
Technical field
The utility model relates to pumped vacuum systems field, in particular to a kind of steam turbine pumped vacuum systems.
Background technique
Steam turbine pumped vacuum systems generally comprises turbine condenser and vacuum pumping device.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, and these vaccum-pumping equipments all belong to aqueous medium vacuum pump, are a kind of coarse vacuum aspirators, and the variation of work water temperature directly affects its pumping performance.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.
Model utility content
In embodiment of the present utility model, provide a kind of steam turbine pumped vacuum systems, to solve the problem of above-mentioned steam turbine pumped vacuum systems.
A kind of steam turbine pumped vacuum systems is provided in the utility model embodiment, has comprised: turbine condenser, dry vacuum pump, main pipeline and the first connecting tube; One end of main pipeline is connected with the bleeding point of turbine condenser; The other end of main pipeline is connected with one end of the first connecting tube; The entrance of dry vacuum pump is connected with the other end of the first connecting tube.
The beneficial effects of the utility model are: do not need water to make the medium vacuumizing, broken through the aqueous medium constraint of conventional vacuum pump, the impact that the exhaust capacity that overcomes water ring vaccum pump and water jet air ejector raises and declines with water temperature, existing water ring vaccum pump or water jet air ejector are transformed, directly aspirate the vapour oxygen mixture of vapour condenser, thereby realize the energy-efficient of pumped vacuum systems.
Accompanying drawing explanation
Fig. 1 shows a kind of steam turbine pumped vacuum systems structural drawing described in the utility model embodiment one;
Fig. 2 shows a kind of steam turbine pumped vacuum systems structural drawing described in the utility model embodiment two;
In figure: 1 turbine condenser bleeding point valve, 2 Water-ring vacuum pump intake mortor operated valves, 3 water ring vaccum pumps, 4 vacuum system manually operated valves, 5 Roots vacuum pump intake mortor operated valves, 6 Roots pumps, 7 intercondensers, 8 dry vacuum pump intake mortor operated valves, 9 dry vacuum pumps, 10 mufflers, 11 drain valves, the water seal of 12U type, 13 turbine condensers, 14 main pipelines, 15 first connecting tubes, 16 second connecting tubes, 17 the 3rd connecting tubes.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the utility model is done further and described in detail.
A steam turbine pumped vacuum systems, comprising: turbine condenser 13, dry vacuum pump 9, main pipeline 14 and the first connecting tube 15; One end of main pipeline 14 is connected with the bleeding point of turbine condenser 13; The other end of main pipeline 14 is connected with one end of the first connecting tube 15; The entrance of dry vacuum pump 9 is connected with the other end of the first connecting tube 15.
The steam turbine pumped vacuum systems providing in the utility model embodiment one, as shown in Figure 1, the vapour gas mixture of extracting out from turbine condenser 13 first enters the entrance of dry vacuum pump 9 successively by the bleeding point of turbine condenser 13 by main pipeline 14 and the first connecting tube 15, then by entering atmosphere after dry vacuum pump 9 compressions.The steam turbine pumped vacuum systems providing in the utility model embodiment one has broken through aqueous medium constraint, realizes the energy-efficient of steam turbine pumped vacuum systems.
In order further to improve the performance that vacuumizes of steam turbine pumped vacuum systems, embodiment two of the present utility model provides another kind of steam turbine pumped vacuum systems, as shown in Figure 2, it is compared with embodiment one, difference is to be also provided with Roots pump 6 on the first connecting tube 15, the setting of Roots pump 6 be for when the exhaust pressure of steam turbine pumped vacuum systems is lower or blank broad-minded situation under use.And compare with original water ring vaccum pump or water jet air ejector, Roots pump 6 is energy-efficient with the pump group that dry vacuum pump 9 forms, more than can be steam turbine pumped vacuum systems economize on electricity 60%-80%.
Preferably, be also provided with dry vacuum pump intake mortor operated valve 8 and Roots vacuum pump intake mortor operated valve 5 on the first connecting tube 15, Roots vacuum pump intake mortor operated valve 5 is between Roots pump 6 and turbine condenser 13.When in case of emergency, realize respectively the snap switch control of dry vacuum pump and Roots pump.
Preferably, between the entrance of the outlet of Roots pump 6 and dry vacuum pump 9, set up the intercondenser 7 that can realize gas-liquid separation, the thing gaseous phase outlet that is condensed of intercondenser 7 connects the entrance of dry vacuum pump 9, the water vapor of vapour gas mixture in Roots pump 6 condenses, the share of the water vapor in cooled vapour gas mixture reduces like this, the non-condensible gas shares such as air increase, reduced the delivery temperature of Roots pump simultaneously, make the volume shrinkage of non-condensible gas, the pumping performance of dry vacuum pump is improved, further improve the performance that vacuumizes of steam turbine pumped vacuum systems.
The thing liquid-phase outlet that is condensed of intercondenser 7 is connected by the second connecting tube 16 with turbine condenser 13, can realize the thing liquid phase that is condensed of intercondenser 7 and mix with the thing that is condensed in turbine condenser 13, recycling.
The intercondenser 7 providing in embodiment two 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.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 turbine condenser 13 providing in embodiment two in the utility model is preferably a kind of shell-and-tube heat exchanger, the shell side thing of walking to be condensed, the liquid-phase outlet of intercondenser 7 is directly connected with the shell side of turbine condenser 13, and the thing liquid phase that is condensed that structure can realize described intercondenser so is qualitatively mixed with the thing that is condensed in turbine condenser.
Preferably, between described Roots vacuum pump intake mortor operated valve 5 and Roots pump 6, can set up augmentor condenser, because from turbine condenser 13 bleeding points vapour gas mixture out, approximately 2/3 is water vapor, vapour gas mixture is after augmentor condenser cooling, water vapor in vapour gas mixture partly condenses, the share of the water vapor in cooled vapour gas mixture reduces like this, the non-condensible gas shares such as air increase, dry vacuum pump 9 and Roots pump 6 pumping performances are got a promotion, further improve the performance that vacuumizes of steam turbine pumped vacuum systems.
The augmentor condenser providing in embodiment two in the utility model 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 6, and the liquid-phase outlet that is preferably augmentor condenser for lime set recycling is directly connected with the shell side of turbine condenser 13.
The augmentor condenser providing in embodiment two 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 13.
Further, in steam turbine pumped vacuum systems running, total pumping speed proportioning optimum of total pumping speed of Roots pump 6 and dry vacuum pump 9 is 1-10.Roots pump 6 can be to connect with the dry vacuum pump 9 of one or one more parallel after one or more parallel converge by pipeline again.
Further, also can set up water ring vaccum pump or water jet air ejector, the utility model embodiment two is preferably water ring vaccum pump, water ring vaccum pump 3 and Water-ring vacuum pump intake mortor operated valve 2 are arranged on the 3rd connecting tube 17, the 3rd connecting tube 17 is connected with main pipeline 14, and in parallel with the first connecting tube 15, water ring vaccum pump 3 is connected with main pipeline 14 by the 3rd connecting tube 17.Water ring vaccum pump 3 is in parallel with the high effective pump group that dry vacuum pump 9 and Roots pump 6 form, water ring vaccum pump 3 gets a promotion the safety reliability of steam turbine pumped vacuum systems as stand-by provision, in addition water ring vaccum pump can one or a more parallel use, it is two that embodiment two of the present utility model is preferably water ring vaccum pump 3.
Further, in order to improve steam turbine pumped vacuum systems, U-shaped water seal 12 also can be set on the second connecting tube 16, the thing liquid-phase outlet that is condensed of intercondenser 7 is connected with U-shaped water seal 12, fixed gas and the water vapor of realizing intercondenser 7 partly remove dry vacuum pump 9, and water of condensation is converged by the water of condensation being cooled in U-shaped water seal 12 and turbine condenser 13.
Further, on the first connecting tube, 15 also can arrange vacuum system manually operated valve 4, and vacuum system manually operated valve 4, between turbine condenser 13 and Roots pump 6, also can be provided with drain valve 11 on the second connecting tube.The setting of vacuum system manually operated valve 4 and drain valve 11 is disassembling systems during for isolated system in case of emergency and convenient maintenance.
Further, at the least significant end of dry vacuum pump 9, can be connected with muffler 10, the noise of discharging directly into atmosphere is larger, prevents noise pollution.
Further, on main pipeline 14, be also provided with turbine condenser bleeding point valve 1.
It is as follows that steam turbine pumped vacuum systems realizes the process vacuumizing: the vapour gas mixture of extracting out from steam turbine gas condensating device is first by turbine condenser bleeding point valve 1 process vacuum system manually operated valve 4, Roots vacuum pump intake mortor operated valve 5 and augmentor condenser enter Roots pump 6, vapour gas mixture is after Roots pump 6 compressions, enter intercondenser 7, after intercondenser 7 is cooling, entering dry vacuum pump 9 further compresses, vapour gas mixture after dry vacuum pump 9 compressions, enters atmosphere by muffler 10.The condensed water that part water vapor in vapour gas mixture produces after intercondenser 7 is cooling enters the vapour condenser of steam turbine through U-shaped water seal 12.
In the utility model, described dry vacuum pump 9 can be pawl formula vacuum pump, air-cooled Roots vacuum pump, screw vacuum pump.Dry vacuum pump 9 can under atmospheric pressure directly start, and can aspirate a large amount of condensable gas, can realize while bleeding discharge opeing, and atmosphere can be directly arranged in its exhaust.
In the utility model, described Roots pump 6 can be common Roots pump, can be also air-cooled Roots vacuum pump.The rotor of Roots pump 6 can be both " 8 " type, can be also three lobe rotor.Roots pump 6 has the feature of the incondensable gases such as the condensable gas such as pump up water steam and air, possesses the feature of low energy consumption, the high speed of exhaust simultaneously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.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 (10)
1. a steam turbine pumped vacuum systems, is characterized in that, comprising: turbine condenser, dry vacuum pump, main pipeline and the first connecting tube; One end of described main pipeline is connected with the bleeding point of described turbine condenser; The other end of described main pipeline is connected with one end of described the first connecting tube; The entrance of described dry vacuum pump is connected with the other end of described the first connecting tube.
2. steam turbine pumped vacuum systems according to claim 1, is characterized in that, is provided with dry vacuum pump intake mortor operated valve on described the first connecting tube.
3. steam turbine pumped vacuum systems according to claim 1, is characterized in that, on described the first connecting tube, is provided with Roots pump.
4. steam turbine pumped vacuum systems according to claim 3, it is characterized in that, on described the first connecting tube, be also provided with Roots vacuum pump intake mortor operated valve, described Roots vacuum pump intake mortor operated valve is between described Roots pump and described turbine condenser.
5. steam turbine pumped vacuum systems according to claim 3, is characterized in that, on described the first connecting tube, is also provided with the intercondenser that can be used in gas-liquid separation, and described intercondenser is between described Roots pump and described dry vacuum pump; And the entrance of described dry vacuum pump communicates with the thing gaseous phase outlet that is condensed of described intercondenser.
6. steam turbine pumped vacuum systems according to claim 5, is characterized in that, the thing liquid-phase outlet that is condensed of described intercondenser is connected by the second connecting tube with described turbine condenser.
7. steam turbine pumped vacuum systems according to claim 6, is characterized in that, on described the second connecting tube, is provided with U-shaped water seal.
8. steam turbine pumped vacuum systems according to claim 6, is characterized in that, on described the first connecting tube, is also provided with vacuum system manually operated valve; Described vacuum system manually operated valve is between described turbine condenser and described Roots pump; On described the second connecting tube, be also provided with drain valve.
9. steam turbine pumped vacuum systems according to claim 1, is characterized in that, also comprises: water ring vaccum pump and the 3rd connecting tube; Described the 3rd connecting tube is connected with described main pipeline, and in parallel with described the first connecting tube; Described water ring vaccum pump is connected with described main pipeline by described the 3rd connecting tube.
10. steam turbine pumped vacuum systems according to claim 9, is characterized in that, is also provided with turbine condenser bleeding point valve on described main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639995.7U CN203488333U (en) | 2013-10-16 | 2013-10-16 | Steam turbine vacuum-pumping system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639995.7U CN203488333U (en) | 2013-10-16 | 2013-10-16 | Steam turbine vacuum-pumping system |
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| CN203488333U true CN203488333U (en) | 2014-03-19 |
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| CN201320639995.7U Expired - Lifetime CN203488333U (en) | 2013-10-16 | 2013-10-16 | Steam turbine vacuum-pumping system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486002A (en) * | 2013-10-16 | 2014-01-01 | 于翔 | Vacuumizing system of turbine |
| CN112682339A (en) * | 2021-03-15 | 2021-04-20 | 亿昇(天津)科技有限公司 | Double-suction vacuum pump system |
-
2013
- 2013-10-16 CN CN201320639995.7U patent/CN203488333U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486002A (en) * | 2013-10-16 | 2014-01-01 | 于翔 | Vacuumizing system of turbine |
| CN103486002B (en) * | 2013-10-16 | 2015-09-30 | 于翔 | A kind of steam turbine pumped vacuum systems |
| CN112682339A (en) * | 2021-03-15 | 2021-04-20 | 亿昇(天津)科技有限公司 | Double-suction vacuum pump system |
| CN112682339B (en) * | 2021-03-15 | 2021-07-09 | 亿昇(天津)科技有限公司 | Double-suction vacuum pump system |
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