CN206496665U - Jetting steam bleeding system - Google Patents
Jetting steam bleeding system Download PDFInfo
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- CN206496665U CN206496665U CN201720092527.0U CN201720092527U CN206496665U CN 206496665 U CN206496665 U CN 206496665U CN 201720092527 U CN201720092527 U CN 201720092527U CN 206496665 U CN206496665 U CN 206496665U
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Abstract
This application provides a kind of jetting steam bleeding system.The jetting steam bleeding system includes condenser, the first pump group, the second pump group and connecting pipeline, wherein, first pump group includes the first water-jet pump and the first vapor extractor, and the first vapor extractor is connected by first pipeline that draws gas with condenser, and the first water-jet pump is connected by the first pipeline with the first vapor extractor；Second pump group includes the second water-jet pump and the second vapor extractor, and the second vapor extractor is connected by second pipeline that draws gas with condenser, and the second water-jet pump is connected by the second pipeline with the second vapor extractor；Connecting pipeline one end is connected with the first pipeline, and the other end is connected with the second pipeline, and communicating valve is provided with connecting pipeline.The jetting steam bleeding system enables to condenser to keep higher vacuum.
Description
Technical field
The application is related to chemical field, in particular to a kind of jetting steam bleeding system.
Background technology
Existing coal chemical industry and field of thermal power, as shown in figure 1, the jetting steam bleeding system of steam turbine include condenser 1', with
First pump group of condenser 1' connections, with condenser ' the second pump group for being connected and water tank 6', one group therein as standby.
First pump group includes the first water-jet pump 4' and connected first vapor extractor 2', and the second pump group is penetrated including second
Water pump 5' and connected second vapor extractor 3', wherein, the first vapor extractor 2' and the second vapor extractor 3' will leak into condenser
1' air and non-condensing gas are extracted out so that condenser 1' maintains vacuum, and circulating water flow is through the first water-jet pump 4' or the
Two water-jet pump 5' nozzle, flow velocity increase pressure reduces, and subnormal ambient is formed in the hybrid chamber of correspondence vapor extractor, by condenser
The mixture of gas and vapour in 1' is extracted out；The main function of water-jet pump is to provide Water circulation hydrodynamics for vapor extractor, it is ensured that vapor extractor
The interior circulating water flow with high speed.When the generator underload or rated load of the water-jet pump in a pump group, pump group fortune
OK, and then the condition of high vacuum degree of condenser 1 can be realized.
Found in actual production, when the generator varying duty of water-jet pump, the reduction of condenser 1' vacuums causes
Interlocking action or cause operation pump group in water-jet pump jump car, and standby pump group start to vapor extractor therein reach it is specified
Negative pressure takes long enough, and the vacuum in this period in condenser is very low, and Turbine Safety operation brings potential safety hazard, sternly
Ghost image rings steam turbine and continuously run, and there is blade water attack dangerous.
Utility model content
The main purpose of the application is to provide a kind of jetting steam bleeding system, to solve standby pump group of the prior art extremely
Water-jetting steam extractor therein reaches the problem of specified negative pressure takes long enough.
To achieve these goals, according to the one side of the application there is provided a kind of jetting steam bleeding system, the jetting is taken out
Vapour system includes：Condenser；First pump group, including the first water-jet pump and the first vapor extractor, above-mentioned first vapor extractor pass through first
The pipeline that draws gas is connected with above-mentioned condenser, and above-mentioned first water-jet pump is connected by the first pipeline with above-mentioned first vapor extractor；Second
Pump group, including the second water-jet pump and the second vapor extractor, above-mentioned second vapor extractor are connected by the second draw gas pipeline and above-mentioned condenser
Connect, above-mentioned second water-jet pump is connected by the second pipeline with above-mentioned second vapor extractor；Connecting pipeline, one end and above-mentioned first pipeline
Connection, the other end is connected with above-mentioned second pipeline, and is provided with communicating valve on above-mentioned connecting pipeline.
Further, it is provided with above-mentioned first pipeline on first check-valve, above-mentioned second pipeline and is provided with the second non-return
Valve, one end of above-mentioned connecting pipeline is arranged on above-mentioned first pipeline between above-mentioned first check-valve and above-mentioned first vapor extractor
On, the other end of above-mentioned connecting pipeline is arranged on above-mentioned second pipeline between above-mentioned second check-valve and above-mentioned second vapor extractor
On.
Further, it is provided with above-mentioned first pipeline on first outlet valve, above-mentioned second pipeline and is provided with second outlet
Valve, one end of above-mentioned connecting pipeline is arranged on above-mentioned first pipeline between above-mentioned first check-valve and above-mentioned first outlet valve
On, the other end of above-mentioned connecting pipeline is arranged on above-mentioned second pipeline between above-mentioned second check-valve and above-mentioned second outlet valve
On.
Further, above-mentioned first draw gas the first extraction control valve is provided with pipeline, above-mentioned second, which draws gas, sets on pipeline
It is equipped with the second extraction control valve.
Further, above-mentioned jetting steam bleeding system also includes water tank, and above-mentioned water tank passes through the first water outlet pipeline and above-mentioned the
One water-jet pump is connected, and above-mentioned water tank is connected by the second water outlet pipeline with above-mentioned second water-jet pump.
Further, one end on above-mentioned first water outlet pipeline close to above-mentioned water tank is provided with the first jetting pump bottom valve, on
Stating the first jetting pump bottom valve is used to limit the above-mentioned water tank of above-mentioned first water-jet pump return；Close to above-mentioned on above-mentioned second water outlet pipeline
One end of water tank is provided with the second jetting pump bottom valve, and above-mentioned second jetting pump bottom valve is used to limit above-mentioned second water-jet pump return
State water tank.
Further, above-mentioned jetting steam bleeding system also includes circulating water pipework, and above-mentioned circulating water pipework is used to be above-mentioned water
Case moisturizing.
Further, above-mentioned circulating water pipework includes main road depot siding and branch road depot siding, and above-mentioned branch road depot siding includes：
Tie point pipeline, is connected with above-mentioned water tank；At least one second tap line, with above-mentioned first water outlet pipeline and above-mentioned
Two water outlet pipelines are all connected with.
Further, it is provided with the first moisturizing control valve on above-mentioned tie point pipeline；Set in above-mentioned second tap line
Be equipped with the second moisturizing control valve and the 3rd moisturizing control valve, above-mentioned second moisturizing control valve close to above-mentioned first water outlet pipeline one
End is set, and above-mentioned 3rd moisturizing control valve is set close to one end of above-mentioned second water outlet pipeline.
Further, above-mentioned circulating water pipework includes the master control valve being arranged on above-mentioned main road depot siding.
Using the technical scheme of the application, when the first water-jet pump jumps car, control communicating valve is opened, then the second water-jet pump with
Second vapor extractor is connected, and the second water-jet pump provides high-velocity flow into the second vapor extractor, vapor extractor is not influenceed to condenser immediately
Draw gas so that condenser keeps higher vacuum.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 shows a kind of structural representation of jetting steam bleeding system of the prior art；And
Fig. 2 shows the structural representation for the jetting steam bleeding system that a kind of embodiment of the application is provided.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
1', condenser；2', the first vapor extractor；3', the second vapor extractor；4', the first water-jet pump；5', the second water-jet pump；6'、
Water tank；1st, condenser；2nd, the first vapor extractor；3rd, the second vapor extractor；4th, the first water-jet pump；5th, the second water-jet pump；6th, water tank；01、
First draws gas pipeline；02nd, second draw gas pipeline；03rd, the first pipeline；04th, the second pipeline；05th, connecting pipeline；06th, the first water outlet
Pipeline；07th, the second water outlet pipeline；08th, circulating water pipework；081st, main road depot siding；821st, tie point pipeline；822nd, second
Road pipeline；09th, return piping；10th, the first extraction control valve；20th, the second extraction control valve；30th, first outlet valve；40th, second
Outlet valve；50th, first check-valve；60th, second check-valve；70th, the first jetting pump bottom valve；80th, the second jetting pump bottom valve；90th, it is total
Control valve；100th, the first moisturizing control valve；110th, the second moisturizing control valve；120th, the 3rd moisturizing control valve；150th, communicating valve.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, standby pump group of the prior art to water-jetting steam extractor therein reaches specified negative
Pressure takes long enough, in order to solve technical problem as above, and present applicant proposes a kind of jetting steam bleeding system.
There is provided a kind of jetting steam bleeding system in a kind of typical embodiment of the application, as shown in Fig. 2 the system bag
Condenser 1, the first pump group, the second pump group and connecting pipeline are included, wherein, the first pump group is drawn gas including the first water-jet pump 4 with first
Device 2, above-mentioned first vapor extractor 2 is connected by first pipeline 01 that draws gas with above-mentioned condenser 1, and above-mentioned first water-jet pump 4 passes through
One pipeline 03 is connected with above-mentioned first vapor extractor 2；Second pump group includes the second water-jet pump 5 and the second vapor extractor 3, and above-mentioned second takes out
Vapour device 3 is connected by second pipeline 02 that draws gas with above-mentioned condenser 1, above-mentioned second water-jet pump 5 by the second pipeline 04 with it is above-mentioned
Second vapor extractor 3 is connected；The one end of connecting pipeline 05 is connected with above-mentioned first pipeline 03, and the other end connects with above-mentioned second pipeline 04
Connect, and communicating valve 150 is provided with above-mentioned connecting pipeline 05.
Using the above-mentioned jetting steam bleeding system of the application, when the first water-jet pump jumps car, control communicating valve is opened, then and second
Water-jet pump is connected with the second vapor extractor, and the second water-jet pump provides high-velocity flow into the second vapor extractor immediately, does not influence vapor extractor
Condenser is drawn gas so that condenser keeps higher vacuum.
In order to avoid the impeller of pump of water under high pressure flow-reversing impingement water-jet pump, water-jet pump is caused to damage problem, as shown in Fig. 2 this
It is provided with application preferably above-mentioned first pipeline 03 on first check-valve 50, above-mentioned second pipeline 04 and is provided with second check-valve
60, one end of above-mentioned connecting pipeline 05 is arranged on above-mentioned first between above-mentioned first check-valve 50 and above-mentioned first vapor extractor 2
On pipeline 03, the other end of above-mentioned connecting pipeline 05 is arranged between above-mentioned second check-valve 60 and above-mentioned second vapor extractor 3
On above-mentioned second pipeline 04.
In another embodiment of the application, as shown in Fig. 2 first outlet valve 30 is provided with above-mentioned first pipeline 03,
Second outlet valve 40 is provided with above-mentioned second pipeline 04, one end of above-mentioned connecting pipeline 05 is arranged on above-mentioned first check-valve 50
On above-mentioned first pipeline 03 between above-mentioned first outlet valve 30, the other end of above-mentioned connecting pipeline 05 is arranged on above-mentioned second
On above-mentioned second pipeline 04 between check-valves 60 and above-mentioned second outlet valve 40.By adjusting first outlet valve and second going out
The size of the ON state of mouth pump, and then the flow of corresponding water-jet pump can be adjusted, and can open or close in time correspondence
Water-jet pump so that corresponding water-jet pump and other equipment are connected or isolated.
In order to more efficiently realize in the connection and disconnection of condenser and vapor extractor, a kind of embodiment of the application, such as
Shown in Fig. 2, above-mentioned first, which draws gas, is provided with the first extraction control valve 10 on pipeline 01, and above-mentioned second, which draws gas, is provided with pipeline 02
Second extraction control valve 20.
In the another embodiment of the application, as shown in Fig. 2 above-mentioned jetting steam bleeding system also includes water tank 6, above-mentioned water tank
6 are connected by the first water outlet pipeline 06 with above-mentioned first water-jet pump 4, and above-mentioned water tank 6 passes through the second water outlet pipeline 07 and above-mentioned the
Two water-jet pumps 5 are connected.
In order that obtaining recirculated water only enters water-jet pump without going out in water-jet pump, a kind of embodiment of the application, as shown in Fig. 2
One end on above-mentioned first water outlet pipeline 06 close to above-mentioned water tank 6 is provided with the first jetting pump bottom valve 70, above-mentioned first water-jet pump
Bottom valve 70 returns to above-mentioned water tank 6 for limiting above-mentioned first water-jet pump 4；Close to above-mentioned water tank 6 on above-mentioned second water outlet pipeline 07
One end be provided with the second jetting pump bottom valve 80, above-mentioned second jetting pump bottom valve 80, which is used to limiting above-mentioned second water-jet pump 5, to be returned
Above-mentioned water tank 6.
In order to preferably limit the flow direction of recirculated water, as shown in Fig. 2 it is preferred that the first jetting pump bottom valve 70 and the second water-jet pump
Bottom valve 80 is separately positioned on the bottom of the first water outlet pipeline 06 and the second water outlet pipeline 07.
In the another embodiment of the application, as shown in Fig. 2 above-mentioned jetting steam bleeding system also includes circulating water pipework 08,
Above-mentioned circulating water pipework 08 is used to be the above-mentioned moisturizing of water tank 6, and the setting of the pipeline can ensure that the jetting steam bleeding system has surely
Determine water source；Ensure the normal startup of water-jet pump.
In order to realize more preferable moisturizing effect, the normal startup of water-jet pump is further ensured that, as shown in Fig. 2 the application is excellent
Choose and state circulating water pipework 08 and include main road depot siding 081 and branch road depot siding, above-mentioned branch road depot siding includes tie point pipe
Line 821 and at least one second tap line 822, wherein, tie point pipeline 821 is connected with above-mentioned water tank 6, can directly to
Cistern water supply；Second tap line 822 is all connected with above-mentioned first water outlet pipeline 06 and above-mentioned second water outlet pipeline 07, can be with
To corresponding jetting water supplying pump.
In a kind of embodiment of the application, as shown in Fig. 2 the circulating water pipework 08 includes two the second tap lines
822。
Water is provided to each water-jet pump in time in order to be further ensured that, and then ensures its normal operation, one kind of the application
In embodiment, as shown in Fig. 2 being provided with the first moisturizing control valve 100 on above-mentioned tie point pipeline 821；Above-mentioned second branch road
The second moisturizing control valve 110 and the 3rd moisturizing control valve 120 are provided with pipeline 822, above-mentioned second moisturizing control valve 110 is close
One end of above-mentioned first water outlet pipeline 06 is set, above-mentioned 3rd moisturizing control valve 120 close to above-mentioned second water outlet pipeline 07 one
End is set.
In another embodiment of the application, as shown in Fig. 2 above-mentioned circulating water pipework 08 includes being arranged on above-mentioned main road section
Master control valve 90 on pipeline 081, the opening of the control circulating water pipework of master control valve 90 and closing, and then control whether to water tank
And water-jet pump moisturizing.
In a kind of embodiment of the application, as shown in Fig. 2 also including two return pipings 09 in the system, it is respectively communicated with
First water-jet pump 4 and the water-jet pump 5 of water tank 6 and second and water tank 6.The return piping 09 is used for water-jet pump from corresponding condensing
The vapor transfer recovery tank 6 extracted out in device.
In order that the technical scheme of the application can clearly be understood by obtaining those skilled in the art, below with reference to tool
The embodiment of body illustrates the technical scheme of the application.
Embodiment
The structure of jetting steam bleeding system with the first pump group as shown in Fig. 2 in jetting steam bleeding system running, operated to
Example, the first extraction control valve 10, first outlet valve 30, the first jetting pump bottom valve 70, communicating valve 150 are opened, master control valve 90, one
Individual 3rd moisturizing control valve 120, second outlet valve 40, the second extraction control valve 20, the first moisturizing control valve 100, the second moisturizing
Control valve 110 is closed mode.
It is the state that puts into operation when the first water-jet pump 4, the second water-jet pump 5 is shutdown stand-by state.Now, jetting steam bleeding system is followed
Ring Water flow-path：Water-jet pump 4 → first check-valve, the 50 → first outlet valve 30 of water tank 6 → the first opens the → the first vapor extractor 2, condensing
Non-condensing gas in device 1 and liquid-vapor mixture are drawn into the first vapor extractor 2 through first pipeline 01 that draws gas, and realize condenser low pressure
Environment.
When the first water-jet pump 4 is jumps car, interlocking action, the second water-jet pump interlocked startup is (standby when running pump tripping operation
Pump startup, is realized by interlock logic).Jetting steam bleeding system recirculated water flow：The jetting of second jetting pump bottom valve 80 → the second
The water-jet pump 4 of pump 5 → second check-valve, 60 → communicating valve, 150 → connecting pipeline, 05 → first outlet valve 30 → the first.Second jetting
Pump 5 is not actuated, and the first water-jet pump 4 is continued to run with.At least one second moisturizing control valve 110 is opened to the entrance of the first water-jet pump 4
Moisturizing.
If the second pump group independent operating, it can be realized by closing communicating valve 150, the operation of the first pump group not influenceed.
Run with 25MW generating sets declared working condition, every jetting pump operation power 110kw, exemplified by running 300 days every year：
The system can economize on electricity 110 × 24 × 300=792000kwh every year；Electricity is often spent by 0.5 yuan of calculating, can be saved every year
Ten thousand yuan of about 792000 × 0.5=39.6 of RMB.
Also, the system realizes the stable safe operation of jetting steam bleeding system；Maintain the specified vacuum of condenser；If no
Standby pump group, after the tripping operation of the first water-jet pump, incoagulable gas and leaked-in air can not be discharged in time in condenser, not only shadow
The heat transfer effect of condenser is rung, and condenser vacuum is low following harm：A, exhaust steam pressure rise, usable enthalpy drop are reduced, no
Economy, while making generating set exert oneself reduction；B, exhaust temperature rise, exhaust casing and bearing block expanded by heating may cause center
Change, produces vibration.C, exhaust temperature may cause condenser cooling water pipe swollen mouth relaxation destruction tightness when too high.D, possibility
Making the axial thrust of steam turbine increases.E, vacuum decay reduce the volume flow of steam discharge, unfavorable to what last blade working, together
When can also produce larger exciting force at a certain position of blade and be possible to damaged blade and cause the accident.Therefore this system ensure that
The safe operation of generating set；Realize that a pump group runs another standby.
As can be seen from the above description, the application the above embodiments realize following technique effect：
The above-mentioned jetting steam bleeding system of the application, when the first water-jet pump jumps car, control communicating valve is opened, then the second jetting
Pump is connected with the second vapor extractor, and the second water-jet pump provides high-velocity flow into the second vapor extractor immediately, and vapor extractor is not influenceed to solidifying
Vapour device draws gas so that condenser keeps higher vacuum.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of jetting steam bleeding system, it is characterised in that the jetting steam bleeding system includes：
Condenser (1)；
First pump group, including the first water-jet pump (4) and the first vapor extractor (2), first vapor extractor (2) pass through the first extraction steam pipe
Line (01) is connected with the condenser (1), and first water-jet pump (4) passes through the first pipeline (03) and first vapor extractor
(2) connect；
Second pump group, including the second water-jet pump (5) and the second vapor extractor (3), second vapor extractor (3) pass through the second extraction steam pipe
Line (02) is connected with the condenser (1), and second water-jet pump (5) passes through the second pipeline (04) and second vapor extractor
(3) connect；And
Connecting pipeline (05), one end is connected with first pipeline (03), and the other end is connected with second pipeline (04), and institute
State and communicating valve (150) is provided with connecting pipeline (05).
2. jetting steam bleeding system according to claim 1, it is characterised in that be provided with first on first pipeline (03)
Second check-valve (60) is provided with check-valves (50), second pipeline (04), one end of the connecting pipeline (05) is set
On first pipeline (03) between the first check-valve (50) and first vapor extractor (2), the connecting pipeline
(05) the other end is arranged on second pipeline (04) between the second check-valve (60) and second vapor extractor (3)
On.
3. jetting steam bleeding system according to claim 2, it is characterised in that be provided with first on first pipeline (03)
Second outlet valve (40) is provided with outlet valve (30), second pipeline (04), one end of the connecting pipeline (05) is set
On first pipeline (03) between the first check-valve (50) and the first outlet valve (30), the connecting pipeline
(05) the other end is arranged on second pipeline between the second check-valve (60) and the second outlet valve (40)
(04) on.
4. jetting steam bleeding system according to claim 1, it is characterised in that described first, which draws gas, is provided with pipeline (01)
First extraction control valve (10), described second, which draws gas, is provided with the second extraction control valve (20) on pipeline (02).
5. jetting steam bleeding system according to claim 1, it is characterised in that the jetting steam bleeding system also includes water tank
(6), the water tank (6) is connected by the first water outlet pipeline (06) with first water-jet pump (4), and the water tank (6) passes through
Two water outlet pipelines (07) are connected with second water-jet pump (5).
6. jetting steam bleeding system according to claim 5, it is characterised in that close to institute on the first water outlet pipeline (06)
The one end for stating water tank (6) is provided with the first jetting pump bottom valve (70), and the first jetting pump bottom valve (70) is used to limiting described the
One water-jet pump (4) returns to the water tank (6)；One end on the second water outlet pipeline (07) close to the water tank (6) is provided with
Second jetting pump bottom valve (80), the second jetting pump bottom valve (80) is used to limit the second water-jet pump (5) return water
Case (6).
7. jetting steam bleeding system according to claim 5, it is characterised in that the jetting steam bleeding system also includes recirculated water
Pipeline (08), the circulating water pipework (08) is used to be the water tank (6) moisturizing.
8. jetting steam bleeding system according to claim 7, it is characterised in that the circulating water pipework (08) includes main road section
Pipeline (081) and branch road depot siding, the branch road depot siding include：
Tie point pipeline (821), is connected with the water tank (6)；And
At least one second tap line (822), with the first water outlet pipeline (06) and the second water outlet pipeline (07)
It is all connected with.
9. jetting steam bleeding system according to claim 8, it is characterised in that set on the tie point pipeline (821)
There is the first moisturizing control valve (100)；The second moisturizing control valve (110) and the 3rd is provided with second tap line (822)
Moisturizing control valve (120), the second moisturizing control valve (110) is set close to one end of the first water outlet pipeline (06), institute
The 3rd moisturizing control valve (120) is stated to set close to one end of the second water outlet pipeline (07).
10. jetting steam bleeding system according to claim 8, it is characterised in that the circulating water pipework (08) includes setting
Master control valve (90) on the main road depot siding (081).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092527.0U CN206496665U (en) | 2017-01-22 | 2017-01-22 | Jetting steam bleeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092527.0U CN206496665U (en) | 2017-01-22 | 2017-01-22 | Jetting steam bleeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206496665U true CN206496665U (en) | 2017-09-15 |
Family
ID=59803823
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731501A (en) * | 2017-10-25 | 2018-11-02 | 江苏核电有限公司 | Energy saver and power-economizing method for the optimization of vacuum water-jet pump system operation mode |
-
2017
- 2017-01-22 CN CN201720092527.0U patent/CN206496665U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731501A (en) * | 2017-10-25 | 2018-11-02 | 江苏核电有限公司 | Energy saver and power-economizing method for the optimization of vacuum water-jet pump system operation mode |
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