CN204027366U - Steam condenser vacuum extractor - Google Patents
Steam condenser vacuum extractor Download PDFInfo
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- CN204027366U CN204027366U CN201420513362.6U CN201420513362U CN204027366U CN 204027366 U CN204027366 U CN 204027366U CN 201420513362 U CN201420513362 U CN 201420513362U CN 204027366 U CN204027366 U CN 204027366U
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- condenser
- pump
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- vacuum
- vacuum pump
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Abstract
The utility model is a kind of steam condenser vacuum extractor, and manually valve, rapid cut-off valve, non-return valve connect with condenser, guarantees the safe operation of system.This device is to the scrap build of existing poor efficiency, and the type selecting of newly-built equipment all has practicality.This device is specially for the novel device of steam condenser design.Solve the problem of cavitation of water-ring vacuum pump.Improve the cooling device of working solution, improve the suction force of pump, improve the efficiency of pump.Reduce idle work and reduce power of motor.Reduce invalid volume flow, reduce energy consumption.The object that this device practical reaches consumption reduction, ensures safety.
Description
Technical field
The utility model relates to a kind of steam condenser vacuum extractor, and equipment of the present utility model is specially for the Novel evacuating device of steam condenser design, and be satisfied with the requirement that condenser vacuumizes, operate power is low.Can effectively avoid cavitation operating mode simultaneously, guarantee the long period safe operation of equipment.Reduce noise, improve working environment.
Background technology
The vavuum pump now run, when former design be requirement in a short period of time (in 30-40 minute) set up the specified vacuum values of condenser, the declared working condition withdrawing air flow of vavuum pump is 83Kg/h (thermal power plant 300MW type), and after condenser normally runs, require that condenser vacuum tightness experiment acceptance value is less than 400Pa/min, now condenser leaked-in air flow is 27Kg/h, and vacuum tightness experiment value is lower in the blank throughput of outstanding value.Vavuum pump is when normally running, and the flow of actual withdrawing air is very little, can use the vavuum pump of more low discharge.Set up the time (approximately several hours) that vacuum is just very short when condenser starts, and the time that condenser normally runs very grows (whole year operation hourage is 7000 hours).Vacuum extractor when condenser normally runs should be redesigned.
Under condenser apparatus operates in more economical operating mode, water-ring vacuum pump is longtime running under limiting condition, causes to run noise and exceed standard.More importantly cause vavuum pump to produce cavitation, damage the rotor of pump, impeller ruptures, and works the mischief to the safe operation of equipment.The vacuum pump application field now run widely, does not have for the special water-ring vacuum pump of the equipment de-sign that steam condenser is such.The operation characteristic of condenser is the economy in order to improve system, works as much as possible under end vacuum, causes vavuum pump cavitation.Cavitation is a kind of physical phenomenon, occurs at certain temperature and vacuum condition.The reason of water-ring vacuum pump cavitation:
1) existing vavuum pump is bigger than normal in type selecting, meet the needs setting up vacuum, and it is bigger than normal to maintain vacuum aspect.
2) design conditions and operating condition are not inconsistent, and when designing, As soon as possible Promising Policy vacuumizes needs in various operating mode.And condenser is when normally running, the equipment that especially vacuum tightness is good, blank throughput is very little, and the vacuum of system is high, and vavuum pump to be operated under the vacuum state of the limit easily cavitation.
3) temperature drift of water ring in water-ring vacuum pump.Design of heat exchanger is unreasonable, and heat transfer effect difference is one of reason wherein, also has the reason of other side.In pump, the temperature of water ring is close to the saturation temperature under this vacuum, reaches the necessary condition of cavitation, very easily cavitation.
4) vavuum pump operationally fails to avoid the operating mode producing cavitation.
Cavitation is a key factor of restriction vavuum pump safe operation.Pump cavitation rear blade ruptures, and rotor dynamic unbalance, causes vibration equipment.More exchanging rotor costly, length consuming time.
Analyze from condenser and water-ring vacuum pump design and running, have many lost works and invalid volume flow to reduce, the power of pump can be reduced like this, reach energy-saving and cost-reducing object.
1) intrinsic water-ring vacuum pump power is bigger than normal, and condenser when normally running the flow of exhaust little, the efficiency of powerful device is caused to reduce further, the lost work produced increases, useless merit rotor driven and the water ring frictional heat in vavuum pump again of this part, the working water temperature of pump is increased to the saturation temperature under condenser vacuum further, and the suction capactity of vavuum pump reduces.The soften(ing) of condenser, affects economy.
2) from the operation principle of condenser, water vapour meets condensation knot, and after the steam condensation of low temperature becomes the saturated condensate water corresponding to this temperature, height of formation vacuum, this is the physical process of an isothermal.And condenser is not definitely tight, outside air can bleed.Air can form very large thermal resistance on the heat exchanger tube surface of condenser, reduces vacuum.The effect of vavuum pump: extract incoagulable gas in condenser out, maintains vacuum, improves heat transfer boundary condition, improves the thermal efficiency of equipment.And be not merely incoagulable gas the gas that vavuum pump aspirates in condenser, some invalid volume flow.This part invalid volume flow too increases the added losses of vavuum pump, causes waste.
Present stage steam condenser use exhaust equipment be: water jet air ejector, stream-jet ejector and water-ring vacuum pump etc.The general power of these equipment is bigger than normal, and when normally running, efficiency is on the low side, is unfavorable for saving energy and reduce the cost.Along with the development of science and technology, present exhaust equipment is designed to more high efficiency new device to adapt to specific operating mode.
Utility model content
For using the system of former vavuum pump to transform, increase a novel steam condenser vacuum extractor, and former vaccum pump unit is arranged in parallel.When vacuum set up by condenser, use original equipment to run, after system normal table, start new device, stop for subsequent use as under emergency episode state of original equipment, such the old and new's equipment complements one another.For newly-built equipment, can carry out considering selecting new device from total system, because condenser is when setting up vacuum, there is no need to reach specified vacuum values in a short period of time, can when system starts, this new device of pre-cooling carries out exhaust and sets up vacuum, and the requirement being satisfied with system when total system needs to reach specified vacuum values is just passable.What original system designed starts two vavuum pumps when vacuum set up by condenser, and only needs startup vavuum pump to run during practical operation, and setting up vacuum fast to condenser does not have too high requirement, as long as the requirement meeting total system startup is just passable.
The utility model device is steam condenser vacuum extractor, for condenser provides the service of exhaust.This device comprises: High-efficient Water ring vacuum pumps, the vacuum pump matched with pump, heat exchanger, steam trap, with the working water injector that pump is supporting, and measuring and protecting instrument.
The purpose of this utility model: equipment of the present utility model is specially for the Novel evacuating device of steam condenser design, and be satisfied with the requirement that condenser vacuumizes, operate power is low.Can effectively avoid cavitation operating mode simultaneously, guarantee the long period safe operation of equipment.Reduce noise, improve working environment.
The technical scheme of the utility model device realizes
1) steam condenser exhaust device is connected by pipeline, manually operated door, fast shutoff door, non-return flap with condenser.This device is when normal stopping and emergency stop valve trip, and energy quick closedown, prevents air from bleeding in condenser, and stand-by equipment starts, and guarantees the safe operation of whole system.
2) in existing system, transformation increases a set of device, is arranged in parallel with former vavuum pump, in whole system startup scheme, can complement one another, add security, reduce energy consumption with original equipment in energy-conservation and security.
3) in newly-built equipment, as long as do not affect overall startup scheme, this device of pre-cooling, is satisfied with the needs of vacuum, can consider directly to use this device.Arrange two playscript with stage directions new devices, start two table apparatus and run when vacuum set up by condenser, during normal operation, an operation one is for subsequent use, meets the double requirements of start-up and operation.
4) this special new device for steam condenser design.Vacuum pump is utilized effectively to eliminate cavitation phenomenons.Working water injector with this matched with devices, improves the suction capactity of vavuum pump, improves the efficiency of pump.Reduce lost work, reduce power of motor.Heat exchanger and steam trap reduce invalid volume flow, reduce energy consumption.Reach consumption reduction, the object ensured safety.
Accompanying drawing explanation
It is the structural representation of the utility model device in accompanying drawing.
1 condenser in accompanying drawing; 2 manually operated doors; 3 quick shutoff doors; 4 non-return flaps; 5 heat exchangers; 6 steam traps; 7 vacuum pumps; 8 working solutions are filled with; 9 injectors; 10 water-ring vacuum pumps; 11 heat exchangers; 12 cooling water pipes.The utility model device is connected by pipeline, 2 manually operated doors, 3 quick shutoff doors, 4 non-return flaps and 1 condenser, provides the service vacuumized.5 heat exchangers and the external cooling water of 11 heat exchangers cool.
In accompanying drawing, the utility model device comprises: High-efficient Water ring vacuum pumps; the vacuum pump matched with pump; heat exchanger; steam trap, with the working water injector that pump is supporting, and measuring and protecting metering device; it is complete equipment; need not assemble, in connection after circuit, cooling water pipeline and exhaust pipeline, directly use.
Detailed description of the invention
In order to understand the technical scheme of the utility model device better, carry out full and accurate explanation embodiment by reference to the accompanying drawings.
With reference to shown in accompanying drawing, the utility model device comprises heat exchanger, vacuum pump, High-efficient Water ring vacuum pumps, working solution injector and steam trap.These assemblies scientifically set up into a whole set of device according to operation principle with the requirement of position, need not assemble on the spot.And be convenient to safeguard and maintenance.
The utility model device and former vaccum pump unit are arranged in parallel use.Manually operated door be device when repair and maintenance, reliably and isolation of system, can not affect the operation of whole system.Quick shutoff door and non-return flap be this new device stop or emergency stop valve trip time, system and this device are isolated by quick closedown, guarantee the safety of system.Package unit runs, and reaches energy-conservation and object that is that ensure safety.
The utility model device, can directly use when vaccum-pumping equipment type selecting for the condenser of newly-built and design.
The efficient vacuum pump used in the utility model device, vacuum pump and injector solve problem of cavitation jointly, have the requirement be satisfied with and solved cavitation, be different from existing vavuum pump when use and device fabrication.Heat exchanger, steam trap and injector jointly coordinate and reduce energy consumption, design, manufacture and run in have and manufacture and design requirement.
Claims (4)
1. a steam condenser vacuum extractor, comprises hand-operated valve, rapid cut-off valve, non-return valve, heat exchanger, vacuum pump, steam trap, injector, water-ring vacuum pump, working solution filling; It is characterized in that: manually valve, rapid cut-off valve, non-return valve and condenser connect, and when this device quits work, can cut off rapidly and connect with condenser.
2. steam condenser vacuum extractor according to claim 1, is characterized in that: described water-ring vacuum pump is a kind of water-ring vacuum pump with vacuum pump.
3. steam condenser vacuum extractor according to claim 1, is characterized in that: aspirate the water vapour of coming from condenser and condense into water by heat exchanger, reduces volume flow, enters water-ring vacuum pump by steam trap.
4. steam condenser vacuum extractor according to claim 1, is characterized in that: working water after heat exchanger cooling, then enters water-ring vacuum pump by injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513362.6U CN204027366U (en) | 2014-09-01 | 2014-09-01 | Steam condenser vacuum extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513362.6U CN204027366U (en) | 2014-09-01 | 2014-09-01 | Steam condenser vacuum extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204027366U true CN204027366U (en) | 2014-12-17 |
Family
ID=52067211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420513362.6U Expired - Fee Related CN204027366U (en) | 2014-09-01 | 2014-09-01 | Steam condenser vacuum extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204027366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202936A (en) * | 2015-10-10 | 2015-12-30 | 中联西北工程设计研究院有限公司 | Low-energy-consumption condenser variable frequency vacuum system |
| CN107062934A (en) * | 2017-05-15 | 2017-08-18 | 华电电力科学研究院 | A kind of energy-conservation vacuumizes cooling system and method |
-
2014
- 2014-09-01 CN CN201420513362.6U patent/CN204027366U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202936A (en) * | 2015-10-10 | 2015-12-30 | 中联西北工程设计研究院有限公司 | Low-energy-consumption condenser variable frequency vacuum system |
| CN107062934A (en) * | 2017-05-15 | 2017-08-18 | 华电电力科学研究院 | A kind of energy-conservation vacuumizes cooling system and method |
| CN107062934B (en) * | 2017-05-15 | 2022-11-25 | 华电电力科学研究院有限公司 | Energy-saving vacuumizing cooling system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: JINING WANJUN ELECTROMECHANICAL EQUIPMENT CO., LTD. Document name: Notification to Pay the Fees |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 272000 West unit 2402, A District, campus life park, Taibai Lake New District, Jining City, Shandong, China, 2402 Patentee after: JINING WANJUN ELECTROMECHANICAL EQUIPMENT CO., LTD. Address before: 272000 Jining Shengli Chaoyang District, Shandong, commercial and residential building, one floor, 86 shopping malls. Patentee before: JINING WANJUN ELECTROMECHANICAL EQUIPMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170901 |