CN105202937B - A kind of condenser Vacuumization energy-saving device without cavitation low noise - Google Patents
A kind of condenser Vacuumization energy-saving device without cavitation low noise Download PDFInfo
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- CN105202937B CN105202937B CN201510654776.XA CN201510654776A CN105202937B CN 105202937 B CN105202937 B CN 105202937B CN 201510654776 A CN201510654776 A CN 201510654776A CN 105202937 B CN105202937 B CN 105202937B
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Abstract
The invention discloses a kind of condenser Vacuumization energy-saving device without cavitation low noise, including suction line, hand-operated valve, Pneumatic butterfly valve, frequency conversion High Pressure Difference dry type lobe pump, automatically adjust spray equipment, condenser, vacuum breaking device, frequency conversion cone two-stage pump, separator, condenser, constant pressure frequency conversion control device, quiet case, check-valves, the irregular change of tolerance inside condenser, when environment temperature is raised, pumping speed and compression ratio can be automatically adjusted, prevent system trip from shutting down or standby pump startup, improve system reliability, reducing energy consumption, prevent cavitation and hang-up from returning water, solve scale problems, effectively reduce noise pollution.
Description
Technical field
The invention belongs to vacuum pumping technology field, it is related to a kind of Vacuumization energy-saving device, especially one kind is without cavitation low noise
The condenser Vacuumization energy-saving device of sound.
Background technology
Thermal power plant condenser vacuum extractor, traditional design is single-stage Water-ring vacuum pump group, injector or Roots's water
The design of the compound pump group of ring.In use, described device can not automatically adjust pumping speed and pressure ratio, and efficiency low energy consumption is big；Without solution
Certainly vacuum plant can easily occur cavitation, cause with suction temperature rising, the elevated problem of pump interior circulation water temperature, vavuum pump inside
Pumping speed and vacuum pressure decline；There is no noise reduction measure, described device noise even can reach more than 100 decibels.
The Chinese patent of Application No. 201310006450.7 and 201310485878.4 discloses a kind of maintenance firepower hair
The devices and methods therefor of plant condenser vacuum, using the combined system of air cooling lobe pump+water ring vacuum pump, solves single water
Ring vacuum pump pumping speed and pressure problem affected by environment, energy-saving effect are more obvious.But when condenser internal leakage tolerance becomes
When changing larger, temperature rise and increasing, system can trip or start stand-by pump, cause to shut down or energy consumption increase；Though the gas after temperature rise
So lower the temperature by interconderser, but be only to try to ensure the pumping speed of water ring vacuum pump after suction water ring vacuum pump, do not solve true
Empty pump cavitation problem, causes vacuum pressure and pumping speed to decline, and impeller fracture, and condenser and Water-ring vacuum can occur when serious
Fouling can occur in pump, cause component wear, electric current increase, rate of air sucked in required to decline；Do not consider in slave unit type selecting and structure design
The noise problem of integral device, common air cooling lobe pump noise when inspiratory capacity fluctuates is even more than 100 decibels；And this dimension
Water when holding equipment does not have vacuum breaking device, instant cut-off or shutdown in water ring vacuum pump can be returned in lobe pump and system,
Cause lobe pump internal gear emulsification of lubricant.
The content of the invention
Shortcoming it is an object of the invention to overcome above-mentioned prior art, there is provided a kind of condenser without cavitation low noise is taken out
Vacuum energy-saving device.
The purpose of the present invention is achieved through the following technical solutions：
Condenser Vacuumization energy-saving device of this kind without cavitation low noise, including cabinet and be arranged in cabinet and successively
The suction line that is connected by pipeline, Pneumatic butterfly valve, frequency conversion High Pressure Difference dry type lobe pump, automatically adjust spray equipment, first cold
Condenser, frequency conversion cone two-stage pump, separator and check-valves；Pipeline between the frequency conversion cone two-stage pump and the first condenser
On be also associated with vacuum breaking device；The second condenser is connected between frequency conversion cone two-stage pump and separator；The frequency conversion cone
Body two-stage pump and frequency conversion High Pressure Difference dry type lobe pump are respectively connected with constant pressure frequency conversion control device.
Further, the hand-operated valve to thoroughly cut-out is also equipped between suction line and Pneumatic butterfly valve.
Further, above-mentioned Pneumatic butterfly valve connects the air entry of frequency conversion High Pressure Difference dry type lobe pump；Frequency conversion High Pressure Difference dry type sieve
The exhaust outlet connection of thatch pump automatically adjusts the hot import of spray equipment；The cold outlet connection first for automatically adjusting spray equipment
Condenser, first condenser connects vacuum breaking device, and vacuum breaking device connects the air inlet of frequency conversion cone two-stage pump, frequency conversion
The exhaust outlet of cone two-stage pump connects the air inlet of separator；The separator point two-way connection：The exhaust outlet of separator all the way
The hot import of the second condenser is connected, the cold outlet of the second condenser connects the water supplement port of cone two-stage pump, another road separator
Exhaust outlet connection check-valves；The check-valves connection exhaust main road.
Above-mentioned constant pressure frequency conversion control device is arranged on quiet case.The cabinet is quiet case.
Above-mentioned vacuum breaking device constitutes the automatic air-breathing of negative pressure and breaks by negative pressure electromagnetic actuator, dust guard, silencer
Vacuum plant.
Above-mentioned frequency conversion High Pressure Difference dry type lobe pump is provided with twisting blade profile rotor, is in the frequency conversion High Pressure Difference dry type lobe pump
" low pulse " splashes the lobe pump for expanding runner.
The signal of the condenser vacuum that above-mentioned constant pressure frequency conversion control device detects pressure transmitter accesses DCS controls
System, is converted into actual vacuum P2 automatically inside DCS control systems, true with what the production of setting needed with vacuum P2
Difference MV=P2-P1 output signals between reciprocal of duty cycle P1 reconcile the working frequency of frequency converter, frequency conversion when automatically adjusting airflow fluctuation
Compression ratio between High Pressure Difference dry type lobe pump and frequency conversion twin-stage cone vavuum pump, is taken out with the vacuum for reaching required under low energy consumption
Speed.
The invention has the advantages that：
Condenser Vacuumization energy-saving device without cavitation low noise of the invention inside condenser the irregular change of tolerance,
When environment temperature is raised, pumping speed and compression ratio can be automatically adjusted, prevent system trip from shutting down or standby pump startup, the system of raising can
By property, reducing energy consumption prevents cavitation and hang-up from returning water, solves scale problems, effectively reduces noise pollution.And due to setting
Put and automatically adjusted spray equipment 5, effectively prevent in condenser and water ring vacuum pump can occur fouling, cause component wear,
The generation that electric current increase, rate of air sucked in required decline.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the operation logic schematic diagram of the embodiment of the present invention.
Wherein：1. suction line, 2. hand-operated valve, 3. Pneumatic butterfly valve, 4. frequency conversion High Pressure Difference dry type lobe pump, 5. automatically adjusts
Spray equipment, 6. the first condenser, 7. vacuum breaking device, 8. frequency conversion cone two-stage pump, 9. separator, 10. the second condenser,
11. constant pressure frequency conversion control devices, 12. cabinets, 13. check-valves.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1：Condenser Vacuumization energy-saving device without cavitation low noise of the invention, including cabinet 12 and setting
In the cabinet 12 and pass sequentially through the suction line 1 of pipeline connection, Pneumatic butterfly valve 3, frequency conversion High Pressure Difference dry type lobe pump 4, automatic
Regulation spray equipment 5, the first condenser 6, frequency conversion cone two-stage pump 8, separator 9 and check-valves 13；It is double in the frequency conversion cone
Vacuum breaking device 7 is also associated with pipeline between the level condenser 6 of pump 8 and first；In frequency conversion cone two-stage pump 8 and separator 9
Between be connected with the second condenser 10；The frequency conversion cone two-stage pump 8 and frequency conversion High Pressure Difference dry type lobe pump 4 are respectively connected with constant pressure
Frequency-converting control device 11.
Specific annexation is as follows：
The air entry of the connection frequency conversion High Pressure Difference dry type of Pneumatic butterfly valve 3 lobe pump 4；The row of frequency conversion High Pressure Difference dry type lobe pump 4
Gas port connection automatically adjusts the hot import of spray equipment 5；The cold outlet for automatically adjusting spray equipment 5 connects the first condenser
6, first condenser 6 connects vacuum breaking device 7, the air inlet of the connection frequency conversion cone of vacuum breaking device 7 two-stage pump 8, frequency conversion
The exhaust outlet of cone two-stage pump 8 connects the air inlet of separator 9；9 points of two-way connections of the separator：The row of separator 9 all the way
Gas port connects the hot import of the second condenser 10, and the water supplement port of the cold outlet connection cone two-stage pump 8 of the second condenser 10 is another
The exhaust outlet connection check-valves 13 of road separator 9；The connection exhaust main of the check-valves 13 road.
In highly preferred embodiment of the present invention, it is also equipped between suction line 1 and Pneumatic butterfly valve 3 to thoroughly cut-out
Hand-operated valve 2.Constant pressure frequency conversion control device 11 is arranged on quiet case 12.The cabinet 12 is quiet case.Vacuum breaker is filled
Put 7 and the automatic air-breathing vacuum breaking device of negative pressure is constituted by negative pressure electromagnetic actuator, dust guard, silencer.Frequency conversion High Pressure Difference
Dry type lobe pump 4 is provided with twisting blade profile rotor, is sieve that " low pulse " splashes expansion runner in the frequency conversion High Pressure Difference dry type lobe pump 4
Thatch pump.
The signal of the condenser vacuum that above-mentioned constant pressure frequency conversion control device 11 detects pressure transmitter accesses DCS controls
System processed, is converted into actual vacuum P2 automatically inside DCS control systems, with vacuum P2 and the production needs of setting
Difference MV=P2-P1 output signals between vacuum P1 reconcile the working frequency of frequency converter, automatically adjust airflow fluctuation time-varying
Compression ratio between frequency High Pressure Difference dry type lobe pump 4 and frequency conversion twin-stage cone vavuum pump 8, it is required true under low energy consumption to reach
Empty pumping speed.
If Fig. 2 is operation logic schematic diagram of the invention, the following is the functional interpretation of each part of the invention：
Hand-operated valve 2：Thoroughly and system shutdown.
Pneumatic butterfly valve 3：Realize that system automatic start-stop linked switch is acted.
Frequency conversion High Pressure Difference dry type lobe pump 4：Different from common air cooling lobe pump.Be inside it special twisting blade profile rotor and
There is " low pulse " to splash the lobe pump for expanding runner in exhaust ports design, the pressure fluctuations amplitude of exhaust moment can be reduced, from the energy
Source reduces aerodynamic noise and temperature rise, and noise reduction environment-friendly function is realized together with quiet case 12；The lobe pump is dry pump, is taken out
It is fast fast, it is difficult influenced by ambient temperature, condenser vacuum pumping rate can be accelerated；Make use of the pumping speed of frequency conversion cone two-stage vacuum pump 8
When decaying to minimum, the characteristics of the lobe pump pumping speed is maximum, operating efficiency is improve, installed power can drop to legacy equipment
1/8。
Automatically adjust spray equipment 5：Avoid condenser and water ring vacuum pump fouling；Spray is automatically adjusted by vacuum pressure
Drench, reduce the delivery temperature of frequency conversion High Pressure Difference dry type lobe pump 4.
First condenser 6：To carrying out reducing temperature twice by the gas after spraying cooling, make gas volume be reduced to half with
Under, it is ensured that gas does not reach the temperature conditionss of cavitation after suction frequency conversion cone two-stage vacuum pump 8, so that problem of cavitation is solved,
Improve operating efficiency.
Vacuum breaking device 7：The automatic air-breathing of a kind of negative pressure being made up of negative pressure electromagnetic actuator, dust guard, silencer
Vacuum breaking device, when equipment breaks down or powers off, the pressure difference between balance lobe pump 4 and frequency conversion cone two-stage vacuum pump 8 is prevented
Water in sealing ring vacuum pump is returned in lobe pump 4 and system, causes lobe pump internal gear emulsification of lubricant.
Frequency conversion cone two-stage vacuum pump 8：As the fore pump of lobe pump 4, to system forvacuum and the row of lobe pump 4 is conveyed
The gas for going out, the unique texture sat by two grades of buck configurations in pump and cone wind, reduces compression ratio, further solves cavitation
Problem.
Separator 9, the second condenser 10：The working solution enclosed ring circulatory system is collectively constituted with frequency conversion cone vavuum pump 8, is subtracted
The waste at few water source.
Constant pressure frequency conversion control device 11：The signal of the condenser vacuum that pressure transmitter is detected accesses DCS controls
System, is converted into actual vacuum P2 automatically inside DCS, with the difference between the vacuum P1 of P2 and the production needs of setting
Value (MV=P2-P1) output signal reconciles the working frequency of frequency converter, frequency conversion High Pressure Difference dry type sieve when automatically adjusting airflow fluctuation
Compression ratio between thatch pump 4 and frequency conversion twin-stage cone vavuum pump 8, to reach required vacuum pumping speed under low energy consumption.
Cabinet 12：Speed pump high brings the 1-2-3 subharmonic that high-frequency pneumatic fundamental frequency noise is produced, by super-silent machine
The double-layer sound-absorption sponge of case internal layer absorbs, and makes lower noise to less than 75 decibels, efficiently solves existing vacuum pump group high noise
Defect.
Check-valves 13：In failure or power-off, moment, by pump group and atmospheric isolation, is destroyed by vacuum breaking device 7
Vacuum in pump group, prevents water in water ring vacuum pump from returning to frequency conversion High Pressure Difference dry type lobe pump 4 and system.
The present invention is a kind of condenser Vacuumization energy-saving device without cavitation low noise, is also applicable in other similar operating conditions
Environment, solve the problems, such as that serious cavitation erosion, energy consumption be big, noise is big.
The present invention is not limited to above-mentioned specific embodiment, and person skilled in art is not departing from technical solution of the present invention
Spirit and scope in the case of, the modification carried out to this programme or equivalent, it should also which falling into right of the invention will
The protection domain asked.Although additionally, having used some specific terms in this specification, these terms are intended merely to convenient saying
It is bright, any limitation is not constituted to the present invention.
Claims (7)
1. a kind of condenser Vacuumization energy-saving device without cavitation low noise, it is characterised in that including cabinet (12) and set
In the cabinet (12) and pass sequentially through suction line (1), Pneumatic butterfly valve (3), the frequency conversion High Pressure Difference dry type lobe pump of pipeline connection
(4) spray equipment (5), the first condenser (6), frequency conversion cone two-stage pump (8), separator (9) and check-valves, are automatically adjusted
(13)；Vacuum breaking device (7) is also associated with pipeline between the frequency conversion cone two-stage pump (8) and the first condenser (6)；
The second condenser (10) is connected between frequency conversion cone two-stage pump (8) and separator (9)；The frequency conversion cone two-stage pump (8)
Constant pressure frequency conversion control device (11) is respectively connected with frequency conversion High Pressure Difference dry type lobe pump (4)；The constant pressure frequency conversion control device
(11) signal of the condenser vacuum that pressure transmitter is detected accesses DCS control systems, inside DCS control systems certainly
Move and be counted as actual vacuum P2, with the difference MV=P2- between the vacuum P1 of vacuum P2 and the production needs of setting
P1 output signals reconcile the working frequency of frequency converter, frequency conversion High Pressure Difference dry type lobe pump (4) and change when automatically adjusting airflow fluctuation
Compression ratio between frequency cone two-stage pump (8), to reach required vacuum pumping speed under low energy consumption.
2. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that in air-breathing
The hand-operated valve (2) to thoroughly cut-out is also equipped between pipeline (1) and Pneumatic butterfly valve (3).
3. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that the gas
The air entry of dynamic butterfly valve (3) connection frequency conversion High Pressure Difference dry type lobe pump (4)；The exhaust outlet of frequency conversion High Pressure Difference dry type lobe pump (4)
Connection automatically adjusts the hot import of spray equipment (5)；The cold outlet for automatically adjusting spray equipment (5) connects the first condenser
(6), first condenser (6) connects vacuum breaking device (7), and vacuum breaking device (7) connects entering for frequency conversion cone two-stage pump (8)
Gas port, the air inlet of exhaust outlet connection separator (9) of frequency conversion cone two-stage pump (8)；The separator (9) point two-way connection：
The exhaust outlet of separator (9) connects the hot import of the second condenser (10) all the way, and the cold outlet connection of the second condenser (10) becomes
The water supplement port of frequency cone two-stage pump (8), the exhaust outlet of another road separator (9) connects check-valves (13)；The check-valves (13)
Connection exhaust main road.
4. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that constant pressure becomes
Audio-frequency control device (11) is on quiet case (12).
5. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that the machine
Case (12) is quiet case.
6. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that described broken
Vacuum plant (7) constitutes the automatic air-breathing vacuum breaking device of negative pressure by negative pressure electromagnetic actuator, dust guard, silencer.
7. the condenser Vacuumization energy-saving device without cavitation low noise according to claim 1, it is characterised in that the change
Frequency High Pressure Difference dry type lobe pump (4) is provided with twisting blade profile rotor, is " low pulse " in the frequency conversion High Pressure Difference dry type lobe pump (4)
Splash the lobe pump for expanding runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654776.XA CN105202937B (en) | 2015-10-10 | 2015-10-10 | A kind of condenser Vacuumization energy-saving device without cavitation low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654776.XA CN105202937B (en) | 2015-10-10 | 2015-10-10 | A kind of condenser Vacuumization energy-saving device without cavitation low noise |
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| CN105202937A CN105202937A (en) | 2015-12-30 |
| CN105202937B true CN105202937B (en) | 2017-06-20 |
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| CN201510654776.XA Active CN105202937B (en) | 2015-10-10 | 2015-10-10 | A kind of condenser Vacuumization energy-saving device without cavitation low noise |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865219B (en) * | 2016-04-19 | 2017-03-01 | 山西爱晟特环保科技有限公司 | Multistage heat pressing type pumped vacuum systems |
| US20190309756A1 (en) * | 2016-07-12 | 2019-10-10 | Elivac Company, Ltd. | Multistage power saving vacuum device with root vacuum pump in first stage |
| CN107830742A (en) * | 2017-12-04 | 2018-03-23 | 武汉艾德沃泵阀有限公司 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
| CN109813137A (en) * | 2019-03-13 | 2019-05-28 | 西安热工研究院有限公司 | A kind of vacuum pump system that can be contributed according to suction air capacity adjustment |
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| JP2002071279A (en) * | 2000-08-28 | 2002-03-08 | Hitachi Ltd | Steam condenser vacuum pump system |
| CN203518664U (en) * | 2013-06-17 | 2014-04-02 | 淄博水环真空泵厂有限公司 | Water ring vacuum pump complete equipment for vacuumization of condenser in power station |
| CN204478860U (en) * | 2015-03-23 | 2015-07-15 | 周忠新 | Plant condenser three grades of Roots's variable frequency pump group energy efficiency vacuum maintain system |
| CN104949541A (en) * | 2015-06-29 | 2015-09-30 | 深圳市成德机械有限公司 | Device and method for improving vacuum of power plant condenser and thermal power generation system |
| CN205209273U (en) * | 2015-10-10 | 2016-05-04 | 中联西北工程设计研究院有限公司 | Condenser evacuation economizer of no cavitation low noise |
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2015
- 2015-10-10 CN CN201510654776.XA patent/CN105202937B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002071279A (en) * | 2000-08-28 | 2002-03-08 | Hitachi Ltd | Steam condenser vacuum pump system |
| CN203518664U (en) * | 2013-06-17 | 2014-04-02 | 淄博水环真空泵厂有限公司 | Water ring vacuum pump complete equipment for vacuumization of condenser in power station |
| CN204478860U (en) * | 2015-03-23 | 2015-07-15 | 周忠新 | Plant condenser three grades of Roots's variable frequency pump group energy efficiency vacuum maintain system |
| CN104949541A (en) * | 2015-06-29 | 2015-09-30 | 深圳市成德机械有限公司 | Device and method for improving vacuum of power plant condenser and thermal power generation system |
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| CN105202937A (en) | 2015-12-30 |
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Inventor after: Tian Wei Inventor after: Zhang Huzhen Inventor after: Tian Jin Inventor after: Sun Zhiyu Inventor after: Zhao Jun Inventor after: Tang Zhenyu Inventor after: Li Yi Inventor before: Tian Wei Inventor before: Zhang Huzhen Inventor before: Tian Jin Inventor before: Sun Zhiyu Inventor before: Zhao Jun |
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