CN207540384U - A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants - Google Patents
A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants Download PDFInfo
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- CN207540384U CN207540384U CN201721663539.0U CN201721663539U CN207540384U CN 207540384 U CN207540384 U CN 207540384U CN 201721663539 U CN201721663539 U CN 201721663539U CN 207540384 U CN207540384 U CN 207540384U
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Abstract
The utility model is related to a kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants, including vacuum system and control system；The vacuum system includes vacuum-pumping pipeline, Roots vaccum pump, first heat exchanger, water ring vacuum pump, second heat exchanger and steam-water separator；Pressure difference switch, air-operated solenoid valve, pneumatic on-off valve, pressure transmitter, the first solenoid valve, two position meter switch and control valve in control system are respectively connected to control manifold, junction box on the spot is provided on the control manifold, the signal access DCS control systems of the acquisition of junction box on the spot, control is adjusted by DCS control systems；The utility model passes through the control system that sets vacuum system and link with vacuum system, for aspirating the air and incondensable gas in condenser, the gas of extraction is individually emptied by gas exhaust piping, it is not associated with the exhaust pipe of original water-ring vacuum pump unit, have the function of energy-efficient and keep vacuum pressure.
Description
Technical field
The utility model is related to vacuum pumping technology field more particularly to a kind of systems that vacuum is kept for steam-condenser of thermal power plants
Complexes.
Background technology
Condensing equipment is the important component of condensing turbine, and condenser vacuum directly affects entire steam power plant
Operation stability, economy, reliability and security, therefore there is vacuum decay in condenser in order to prevent, it should
The reason of accurately analysis causes condenser vacuum to decline, and take appropriate measures and handled, guarantee system is normally transported
Row.Condenser vacuum system imprecision.There are during small leak source, incoagulable steam can enter in vacuum turntable vacuum system
Position is leaked in condenser, if incoagulable steam is excessive, and is trapped in influence heat transfer in condenser, it is easy to cause
Vacuum declines extremely.Vacuum decay is mainly shown as caused by condenser vacuum system imprecision：Outgoing condensate water
The difference of temperature and turbine discharge temperature increases, the increase of condensation water cooling degree.Condenser copper tube leakage can cause hardness higher
Cooling water enters the survey of condenser vapour, promotes condenser water level, condenser vacuum is caused to decline, in addition, it also results in water quality change
It is bad, corrosion or boiler or other equipment or even boiler tube bursting can be caused.If condenser water level is increased to exhaust tube nozzle position
It puts, condenser vacuum can be caused to decline, with the increase of condensation water submerged extraction opening degree, be connected to the vacuum of condenser throat
Table instruction reduce, and vacuum reduce speed can gradually speed, but the vacuum dial gauge being connected on vacuum pump instead on
It rises, leads to vacuum pump load.In the prior art, by improved system, energy consumption is greatly.
Based on this, need it is a kind of can realize it is energy-efficient for steam-condenser of thermal power plants keep vacuum system complete equipment
It is devised.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, obtaining a kind of can realize energy-efficient is
Steam-condenser of thermal power plants keeps the system complete equipment of vacuum.
The utility model is to be achieved through the following technical solutions：
A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants, including vacuum system and control system；
The vacuum system includes vacuum-pumping pipeline, Roots vaccum pump, first heat exchanger, water ring vacuum pump, the second heat
Exchanger and steam-water separator, described vacuum-pumping pipeline one end are connected to condenser and vacuumize in main pipe, and the other end is sequentially connected in series
Roots vaccum pump, first heat exchanger, water ring vacuum pump and steam-water separator are provided with, is connected on the Roots vaccum pump
One motor, lobe pump cooling water inlet and lobe pump cooling water outlet are provided on the Roots vaccum pump, and first heat is handed over
Lobe pump heat exchanger cooling water inlet and lobe pump heat exchanger cooling water outlet are provided on parallel operation, is connected on the water ring vacuum pump
The second motor is connected to, second heat exchanger has also been arranged in parallel on the water ring vacuum pump；
The control system includes being successively set on filter screen, the jettron of Roots vaccum pump front end vacuum-pumping tube road
Valve, first check-valve and control manifold, the pneumatic on-off valve and first check-valve have been arranged in parallel pressure difference switch together, described
Pressure difference switch is provided at both ends with corresponding valve, and the first control pipe, first control pipe are provided on the pneumatic on-off valve
Entrance connection blowing plant, the direction that the first control pipe upper edge compressed air enters is disposed with air filtration
Device and air-operated solenoid valve, the vacuum-pumping tube road between the first check-valve and Roots vaccum pump are provided with the second control pipe,
Pressure transmitter and corresponding valve are provided in second control pipe, between the first heat exchanger and water ring vacuum pump
Vacuum-pumping tube road be disposed with third control pipe, second check-valve and primary scene pressure gauge, the third control pipe
Entrance connection vacuum breaker mouth, the direction of the third control pipe upper edge vacuum breaker mouth is disposed with the first normally opened ball valve and the
One solenoid valve, be disposed on the blowback liquid pipeline between the second heat exchanger and water ring vacuum pump scene temperature table and
Secondary scene pressure gauge, the water ring vacuum pump bottom are provided with pump cleaning liquid pipeline, are provided on the pump cleaning liquid pipeline
First normally-closed ball valve, the pump cleaning solution tube outlet are connected to leakage fluid dram, and the steam-water separator entrance is provided with second often
The normally opened ball valve of opening ball valve, third and two position meter switch, and discharge gas port is connected at the top of the steam-water separator, described
The bottom of steam-water separator is provided with the second normally-closed ball valve, and the upper outlet of the steam-water separator is connected to vacuum-pumping tube road
And control valve, third site pressure table and pressure reducing valve are disposed with, the lower part outlet of the steam-water separator is connected to excessive
Flow tube road simultaneously passes through valve control, and the overflow passage is connected to leakage fluid dram；
Wherein, the pressure difference switch, air-operated solenoid valve, pneumatic on-off valve, pressure transmitter, the first solenoid valve, height liquid
Position meter switch and control valve are respectively connected to control manifold, and junction box on the spot is provided on the control manifold, it is described on the spot
The signal access DCS control systems of junction box's acquisition, control is adjusted by DCS control systems.
The utility model further improvement lies in that, the pressure reducing valve is connected to low liquid level replenishing line, and the low liquid level is mended
Liquid pipeline inlet is provided with y-type filter.
The utility model further improvement lies in that, the control valve is made of solenoid valve, normally opened ball valve and normally-closed ball valve.
Compared with prior art, the beneficial effects of the utility model are：The utility model by set vacuum system and
With the control system of vacuum system linkage, for aspirating the air and incondensable gas in condenser, the gas of extraction is by being vented
Pipeline individually empties, not associated with the exhaust pipe of original water-ring vacuum pump unit, has energy-efficient and holding vacuum
The effect of pressure.
Description of the drawings
Fig. 1 is the system structure diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, a kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants, including vacuum system and control
System；
The vacuum system includes vacuum-pumping pipeline, Roots vaccum pump 1, first heat exchanger 2, water ring vacuum pump 3, second
Heat exchanger 5 and steam-water separator 4, described vacuum-pumping pipeline one end are connected to condenser and vacuumize in main pipe, and the other end is successively
It has been arranged in series Roots vaccum pump 1, first heat exchanger 2, water ring vacuum pump 3 and steam-water separator 4, the Roots vaccum pump 1
On be connected with the first motor 6, be provided with lobe pump cooling water inlet and lobe pump cooling water outlet on the Roots vaccum pump 1,
Lobe pump heat exchanger cooling water inlet and lobe pump heat exchanger cooling water outlet are provided in the first heat exchanger 2, it is described
The second motor 7 is connected on water ring vacuum pump 3, second heat exchanger 5 has also been arranged in parallel on the water ring vacuum pump 3；
The control system includes being successively set on the filter screen 8 of 1 front end vacuum-pumping tube road of Roots vaccum pump, pneumatically open
Valve 11, first check-valve 12 and control manifold 39 are closed, the pneumatic on-off valve 11 and first check-valve 12 have been arranged in parallel together
Pressure difference switch 10, the pressure difference switch 10 are provided at both ends with corresponding valve, the first control are provided on the pneumatic on-off valve 11
Tubulation 14, the entrance connection blowing plant of first control pipe 14, the first control pipe upper edge compressed air enter
Direction be disposed with air filter 9 and air-operated solenoid valve 13, between the first check-valve 12 and Roots vaccum pump 1
Vacuum-pumping tube road is provided with the second control pipe 16, and pressure transmitter 15 and corresponding valve are provided in second control pipe 16
Door, the vacuum-pumping tube road between the first heat exchanger 2 and water ring vacuum pump 3 are disposed with third control pipe 18, the
Two check-valves 21 and primary scene pressure gauge 22, the entrance connection vacuum breaker mouth of the third control pipe 18, the third control
The direction of 18 upper edge vacuum breaker mouth of pipe is disposed with the first normally opened 20 and first solenoid valve 19 of ball valve, and the first solenoid valve 19 is to mend
Water solenoid valve for moisturizing, is set gradually between the second heat exchanger 5 and water ring vacuum pump on 3 blowback liquid pipeline 25
There are scene temperature table 24 and secondary scene pressure gauge 23,3 bottom of water ring vacuum pump is provided with pump cleaning liquid pipeline 25, described
The first normally-closed ball valve 20 is provided on pump cleaning liquid pipeline 25, pump cleaning liquid pipeline 25 outlet is connected to leakage fluid dram 33, institute
It states 4 entrance of steam-water separator and is provided with the second normally opened ball valve 27, the normally opened ball valve 28 of third and two position meter switch 29, the vapour
The top of separator 4 is connected to discharge gas port, and the bottom of the steam-water separator 4 is provided with the second normally-closed ball valve 31, institute
The upper outlet for stating steam-water separator 4 is connected to vacuum-pumping tube road and is disposed with control valve 34, third site pressure
Table 35 and pressure reducing valve 36, the lower part outlet of the steam-water separator 4 is connected on overflow passage 32 and passes through valve control, described
Overflow passage 32 is connected to leakage fluid dram 33；
Wherein, the pressure difference switch 10, air-operated solenoid valve 13, pneumatic on-off valve 11, pressure transmitter 15, the first solenoid valve
19th, two position meter switch 29 and control valve 34 are respectively connected to control manifold 39, are provided with just on the control manifold 39
Ground junction box 17, the signal access DCS control systems that the junction box on the spot 17 acquires, control is adjusted by DCS control systems
System.
When it is implemented, the 1 model ZJL600 of Roots vaccum pump, 6 power of the first motor is 18.5kW, described
3 model 2BW5202-0EK4 of water ring vacuum pump, 7 power of the second motor are 22kW.
When it is implemented, the pressure reducing valve 36 is connected to low liquid level replenishing line 37, the low liquid level replenishing line 37 enters
Y-type filter 38 is provided at mouthful.
When it is implemented, the control valve 34 is made of solenoid valve, normally opened ball valve and normally-closed ball valve.
The utility model is used to aspirate the air and incondensable gas in condenser, and the gas of extraction is independent by gas exhaust piping
Emptying, it is not associated with the exhaust pipe of original water-ring vacuum pump unit, there is work that is energy-efficient and keeping vacuum pressure
With.
This complexes is by gas circulation cooling Roots vaccum pump (ZJL600 types) and 18.5KW motors direct connection and liquid-ring type
Vacuum pump group (2BW5202-0EK4) and 22KW motors direct connection are simultaneously connected in series, and linkage is provided with control system, for long-range
Control, the component of monitoring, connector.Each part is installed on steel part pedestal, and is fitted with to observe Roots vaccum pump
Special ladder.
The flow of this complexes：In the main pipe vacuumized and one or two Roots, water-ring vacuum pump assemblies, do not coagulate
Knot gas and steam exhaust enter Roots vaccum pump, enter subordinate's Water-ring vacuum pump group through cooler condensation after pressurization, improve water ring
The inlet pressure of vacuum pump installs spray equipment in the suction end of water ring vacuum pump, intake-gas is cooled down again, is increased
The output of water ring vacuum pump, guarantee water ring vacuum pump is efficient, stable operation.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
1. a kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants, which is characterized in that including vacuum system and control
System；
The vacuum system includes vacuum-pumping pipeline, Roots vaccum pump, first heat exchanger, water ring vacuum pump, the second heat exchange
Device and steam-water separator, described vacuum-pumping pipeline one end are connected to condenser and vacuumize in main pipe, and the other end is sequentially connected in series setting
There are Roots vaccum pump, first heat exchanger, water ring vacuum pump and steam-water separator, the first electricity is connected on the Roots vaccum pump
Machine is provided with lobe pump cooling water inlet and lobe pump cooling water outlet, the first heat exchanger on the Roots vaccum pump
On be provided with lobe pump heat exchanger cooling water inlet and lobe pump heat exchanger cooling water outlet, be connected on the water ring vacuum pump
Second motor has also been arranged in parallel second heat exchanger on the water ring vacuum pump；
The control system include being successively set on the filter screen of Roots vaccum pump front end vacuum-pumping tube road, pneumatic on-off valve,
First check-valve and control manifold, the pneumatic on-off valve and first check-valve have been arranged in parallel pressure difference switch, the pressure together
Difference switch is provided at both ends with corresponding valve, and the first control pipe is provided on the pneumatic on-off valve, first control pipe
Entrance connects blowing plant, and the direction that the first control pipe upper edge compressed air enters is disposed with air filter
And air-operated solenoid valve, the vacuum-pumping tube road between the first check-valve and Roots vaccum pump are provided with the second control pipe, institute
It states and pressure transmitter and corresponding valve is provided in the second control pipe, between the first heat exchanger and water ring vacuum pump
Vacuum-pumping tube road is disposed with third control pipe, second check-valve and primary scene pressure gauge, the third control pipe
Entrance connects vacuum breaker mouth, and the direction of the third control pipe upper edge vacuum breaker mouth is disposed with the first normally opened ball valve and first
Solenoid valve is disposed with scene temperature table and on the blowback liquid pipeline between the second heat exchanger and water ring vacuum pump
Two site pressure tables, the water ring vacuum pump bottom are provided with pump cleaning liquid pipeline, the are provided on the pump cleaning liquid pipeline
One normally-closed ball valve, the pump cleaning solution tube outlet are connected to leakage fluid dram, and it is normally opened that the steam-water separator entrance is provided with second
The normally opened ball valve of ball valve, third and two position meter switch, and discharge gas port, the vapour are connected at the top of the steam-water separator
The bottom of separator is provided with the second normally-closed ball valve, and the upper outlet of the steam-water separator is connected to vacuum-pumping tube road simultaneously
Control valve, third site pressure table and pressure reducing valve are disposed with, the lower part outlet of the steam-water separator is connected to overflow
On pipeline and pass through valve control, the overflow passage is connected to leakage fluid dram；
Wherein, the pressure difference switch, air-operated solenoid valve, pneumatic on-off valve, pressure transmitter, the first solenoid valve, two position meter
Switch and control valve are respectively connected to control manifold, and junction box on the spot, the wiring on the spot are provided on the control manifold
The signal access DCS control systems of case acquisition, control is adjusted by DCS control systems.
2. a kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants according to claim 1, it is characterised in that：
The pressure reducing valve is connected to low liquid level replenishing line, and the low liquid level replenishing line inlet is provided with y-type filter.
3. a kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants according to claim 1, it is characterised in that：
The control valve is made of solenoid valve, normally opened ball valve and normally-closed ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663539.0U CN207540384U (en) | 2017-12-04 | 2017-12-04 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663539.0U CN207540384U (en) | 2017-12-04 | 2017-12-04 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207540384U true CN207540384U (en) | 2018-06-26 |
Family
ID=62616735
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721663539.0U Active CN207540384U (en) | 2017-12-04 | 2017-12-04 | A kind of system complete equipment that vacuum is kept for steam-condenser of thermal power plants |
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| Country | Link |
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| CN (1) | CN207540384U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109797403A (en) * | 2019-04-05 | 2019-05-24 | 唐山三友氯碱有限责任公司 | Integrated control device is cut off in electrolytic cell zero potential difference short circuit certainly |
| CN110608867A (en) * | 2019-10-30 | 2019-12-24 | 中国空气动力研究与发展中心低速空气动力研究所 | Large icing wind tunnel height simulation method |
| WO2020078471A1 (en) * | 2018-10-18 | 2020-04-23 | Changxin Memory Technologies, Inc. | A degassing system, a degassing tower, and a water system having the same |
-
2017
- 2017-12-04 CN CN201721663539.0U patent/CN207540384U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2020078471A1 (en) * | 2018-10-18 | 2020-04-23 | Changxin Memory Technologies, Inc. | A degassing system, a degassing tower, and a water system having the same |
| US11891310B2 (en) | 2018-10-18 | 2024-02-06 | Changxin Memory Technologies, Inc. | Degassing system, a degassing tower, and a water system having the same |
| CN109797403A (en) * | 2019-04-05 | 2019-05-24 | 唐山三友氯碱有限责任公司 | Integrated control device is cut off in electrolytic cell zero potential difference short circuit certainly |
| CN110608867A (en) * | 2019-10-30 | 2019-12-24 | 中国空气动力研究与发展中心低速空气动力研究所 | Large icing wind tunnel height simulation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A complete set of system device for maintaining vacuum for condenser in thermal power plant Effective date of registration: 20220713 Granted publication date: 20180626 Pledgee: Bank of China Limited Wuhan Municipal sub branch Pledgor: WUHAN EDW PUMP & VALVE CO.,LTD. Registration number: Y2022420000226 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |