CN203323586U - Condenser vacuum system of turboset - Google Patents
Condenser vacuum system of turboset Download PDFInfo
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- CN203323586U CN203323586U CN2013202387217U CN201320238721U CN203323586U CN 203323586 U CN203323586 U CN 203323586U CN 2013202387217 U CN2013202387217 U CN 2013202387217U CN 201320238721 U CN201320238721 U CN 201320238721U CN 203323586 U CN203323586 U CN 203323586U
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- vacuum pump
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Abstract
The utility model provides a condenser vacuum system of a turboset. The condenser vacuum system of the turboset comprises a high-back-pressure condenser and a low-back-pressure condenser, wherein the high-back-pressure condenser and the low-back-pressure condenser are connected with at least one vacuum pump unit through a main pipe after being connected in parallel, each vacuum pump unit at least comprises a channel which is connected with the main pipe, each channel is connected with an air condensation opening of a nozzle, and is connected with an outlet of the nozzle through a bypass channel, the outlet of the nozzle is connected with an inlet of a water ring vacuum pump, the water ring vacuum pump is further connected with an operating water cooler and a steam separator, and the steam separator is connected with the operating water cooler. According to the scheme, due to the fact that series connection of the vacuum system is changed into parallel connection of the condenser vacuum system, dual-back-pressure working condition operation is achieved; due to the fact that the average back pressure of each dual-back-pressure condenser is lower than the back pressure of a single-back-pressure condenser under the same conditions, enthalpy drop of a low-pressure cylinder of a steam turbine is increased, and economy of the steam turbine is improved.
Description
Technical field
The utility model relates to field of mechanical technique, refers to especially a kind of steam condenser of steam turbine set vacuum system.
Background technology
Steam condenser of steam turbine set vacuum system of the prior art has high back pressure condenser and low back pressure condenser, and this high back pressure condenser and low back pressure condenser connect mutually, and connects whole Steam Turbine by a valve.Concrete annexation can be as shown in Figure 1, and the vapour side condensate water of this low back pressure condenser enters the high-pressure side condenser.Circulation moisture two-way as shown in Figure 1, enter low back pressure condenser recirculated water entrance → low back pressure condenser circulating water outlet → high back pressure condenser recirculated water entrance → high back pressure condenser circulating water outlet successively.But find in actual use, the result of use of the vacuum system of this structure is bad.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of steam condenser of steam turbine set vacuum system that can obtain better effect.
For solving the problems of the technologies described above, the utility model embodiment provides a kind of steam condenser of steam turbine set vacuum system, comprise high back pressure condenser and low back pressure condenser, wherein said high back pressure condenser is connected in parallel and is connected at least one vacuum pump unit by supervisor afterwards with low back pressure condenser; Wherein said each vacuum pump unit at least comprises water ring vacuum pump 7, and wherein said each vacuum pump unit at least comprises the passage that connects described supervisor, and the suction inlet of its described water ring vacuum pump 7 connects described passage by vacuum pump.
As technique scheme preferably, this passage connects the solidifying gas port of nozzle 2, and connects the outlet of nozzle 2 by bypass channel; The outlet of described nozzle 2 connects the entrance of water ring vacuum pump 7, and water ring vacuum pump 7 also connects working water cooler 9 and steam-water separator 8, and described steam-water separator 8 connects working water coolers 9.
As technique scheme preferably, described bypass channel is provided with bypass check valve 6.
As technique scheme preferably, steam-water separator 8 also connects the gas entrance of described nozzle 2 by air valve 1.
As technique scheme preferably, the port of export of described nozzle 2 is provided with suction chamber 3, and the described port of export connects mixing section 4 and diffuser 5 successively.
As technique scheme preferably, the arrival end of described nozzle 2 connects injector, described injector is provided with contraction section, the internal diameter of described contraction section has a neck part.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, change parallel connection by vacuum system is connected and reach the two back pressure operating modes operations of realization, the average back pressure of double pressure condenser, lower than the place an order back pressure of back pressure condenser of equal conditions, increases the enthalpy drop of steam turbine low pressure (LP) cylinder, thereby has improved the economy of steam turbine.Simultaneously, before the Water-ring vacuum Pump Suction Nozzle, a vacuum pump of series connection, form the pressurized water ring vacuum pump, improves end vacuum to obtain more favorably way of economic operation.
The accompanying drawing explanation
The structural representation that Fig. 1 is existing steam condenser of steam turbine set vacuum system;
The structural representation of the steam condenser of steam turbine set vacuum system that Fig. 2 is the utility model embodiment;
The structural representation that Fig. 3 is vacuum pump unit;
The sectional structure schematic diagram that Fig. 4 is injector.
The specific embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 2 and Figure 3, a kind of steam condenser of steam turbine set vacuum system of the utility model embodiment, comprise high back pressure condenser and low back pressure condenser, wherein said high back pressure condenser is connected in parallel and is connected at least one vacuum pump unit by supervisor afterwards with low back pressure condenser; Wherein said each vacuum pump unit at least comprises water ring vacuum pump 7, and wherein said each vacuum pump unit at least comprises the passage that connects described supervisor, and the suction inlet of its described water ring vacuum pump 7 connects described passage by vacuum pump.
As shown in Figure 3, the high back pressure condenser is connected the solidifying gas port of the nozzle 2 of vacuum pump unit by pipeline A with low back pressure condenser, and connects the outlet of nozzle 2 by bypass channel; The outlet of described nozzle 2 connects the entrance of water ring vacuum pump 7, and water ring vacuum pump 7 also connects working water cooler 9 and steam-water separator 8, and described steam-water separator 8 connects working water coolers 9.
As shown in Figure 3, described bypass channel is provided with bypass check valve 6.As shown in Figure 3, steam-water separator 8 also connects the gas entrance of described nozzle 2 by air valve 1.The port of export of described nozzle 2 is provided with suction chamber 3, and the described port of export connects mixing section 4 and diffuser 5 successively.The arrival end of described nozzle 2 connects injector.As shown in Figure 4, described injector is provided with contraction section, and the internal diameter of described contraction section has a neck part.
Need to first start water ring vacuum pump 7 when work, make to form pressure reduction between nozzle 2 air inlets and exhaust outlet, atmosphere just enters in water ring vacuum pump 7 from nozzle 2.Air dielectric is accelerated through nozzle 2 contraction sections, and directive diffuser 5 forms high-speed jet.The pressure that the pressure ratio of the induction chamber of this nozzle 2 is taken out in container is low, pumped gas is sucked to two strands of air-flows to be mixed in induction chamber, during loss that exchange of kinetic energy produces, airflow rate reduces gradually, when diffuser 5, speed is advanced to reduce, pressure constantly raises, finally reach the vacuum pump pressure at expulsion, i.e. the pressure of inspiration(Pi) of water ring vacuum pump 7.After now by water ring vacuum pump 7, gas being sucked, discharge outside water ring vacuum pump 7, air-breathing, exhaust process has so circulated again.
This shows, the utility model can overcome the defect on the water ring vacuum pump technical performance, before water ring vacuum pump, arrange injector form high efficiency extract system and can effectively improve water ring vacuum pump cavitation performance, increase the service life and improve reliability.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a steam condenser of steam turbine set vacuum system, is characterized in that, comprises high back pressure condenser and low back pressure condenser, and wherein said high back pressure condenser is connected in parallel and is connected at least one vacuum pump unit by supervisor afterwards with low back pressure condenser; Wherein said each vacuum pump unit at least comprises water ring vacuum pump, and wherein said each vacuum pump unit at least comprises the passage that connects described supervisor, and its described Water-ring vacuum pump intake connects described passage by vacuum pump.
2. steam condenser of steam turbine set vacuum system according to claim 1, is characterized in that, this passage connects the solidifying gas port of nozzle, and connect the outlet of nozzle by bypass channel; The outlet of described nozzle connects the entrance of water ring vacuum pump, and water ring vacuum pump also connects working water cooler and steam-water separator, and described steam-water separator connects the working water cooler.
3. steam condenser of steam turbine set vacuum system according to claim 2, is characterized in that, described bypass channel is provided with the bypass check valve.
4. steam condenser of steam turbine set vacuum system according to claim 2, is characterized in that, steam-water separator also connects the gas entrance of described nozzle by air valve.
5. steam condenser of steam turbine set vacuum system according to claim 2, is characterized in that, the port of export of described nozzle is provided with suction chamber, and the described port of export connects mixing section and diffuser successively.
6. steam condenser of steam turbine set vacuum system according to claim 2, is characterized in that, the arrival end of described nozzle connects injector, and described injector is provided with contraction section, and the internal diameter of described contraction section has a neck part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202387217U CN203323586U (en) | 2013-05-04 | 2013-05-04 | Condenser vacuum system of turboset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202387217U CN203323586U (en) | 2013-05-04 | 2013-05-04 | Condenser vacuum system of turboset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203323586U true CN203323586U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202387217U Expired - Lifetime CN203323586U (en) | 2013-05-04 | 2013-05-04 | Condenser vacuum system of turboset |
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| CN (1) | CN203323586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940256A (en) * | 2014-04-11 | 2014-07-23 | 张曙光 | Power plant condenser steam jet and vacuumizing system with pressure control function |
| CN104296550A (en) * | 2014-11-13 | 2015-01-21 | 山东钢铁股份有限公司 | Gas refrigeration system |
-
2013
- 2013-05-04 CN CN2013202387217U patent/CN203323586U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940256A (en) * | 2014-04-11 | 2014-07-23 | 张曙光 | Power plant condenser steam jet and vacuumizing system with pressure control function |
| CN103940256B (en) * | 2014-04-11 | 2016-04-20 | 张曙光 | With pressure controlled plant condenser vapor injection vacuum pumping system |
| CN104296550A (en) * | 2014-11-13 | 2015-01-21 | 山东钢铁股份有限公司 | Gas refrigeration system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |