CN109443030A - A kind of vacuum plant suitable for air cooling unit - Google Patents
A kind of vacuum plant suitable for air cooling unit Download PDFInfo
- Publication number
- CN109443030A CN109443030A CN201811287869.3A CN201811287869A CN109443030A CN 109443030 A CN109443030 A CN 109443030A CN 201811287869 A CN201811287869 A CN 201811287869A CN 109443030 A CN109443030 A CN 109443030A
- Authority
- CN
- China
- Prior art keywords
- water ring
- vacuum pump
- pipe
- ring vacuum
- pneumatic operated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/02—Auxiliary systems, arrangements, or devices for feeding steam or vapour to condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
Abstract
The invention discloses a kind of vacuum plants suitable for air cooling unit, including condenser, first pipe-line system and the second pipe-line system, the exhaust outlet of the condenser is connected with solidifying gas main pipe, first pipe-line system includes sequentially connected steam jet ejector, pipe heat exchanger and the first water ring vacuum pump, the side entrance of the steam jet ejector is connected with solidifying gas main pipe by the first branch, the side entrance upstream of the steam jet ejector is equipped with the first pneumatic operated valve, second pipe-line system includes the pipe heat exchanger and the first water ring vacuum pump, the pipe heat exchanger is connected by second branch with the first branch, the second branch is equipped with the second pneumatic operated valve, as vacuum values >=25kPa in the condenser, first pneumatic operated valve is closed, second pneumatic operated valve is opened, the second pipe-line system operation.The present invention provides a kind of vacuum plants, still using the former method of operation energy consumption when vacuum values for solving the problems, such as unit are low vacuum state.
Description
Technical field
The present invention relates to vacuum pumping technology fields, and in particular to a kind of vacuum plant suitable for air cooling unit.
Background technique
Condenser is a kind of heat exchanger that turbine discharge can be condensed into water, is mainly used for the power device of steam turbine
In, also there is the function of establishing vacuum at turbine discharge and maintain vacuum.In actual use, it is true to influence condenser
, the working performance of General Influence biggish factor such as water ring vacuum pump, temperature of cooling water etc. many because being known as of reciprocal of duty cycle.It passes
Water ring vacuum pump is to establish the requirement of vacuum according to unit to be configured when the unit pumped vacuum systems of system, the operation power consumption of equipment
Greatly, under the service condition for maintaining unit vacuum, there is very big consumption reduction space.
The energy-saving type vacuum device that control can be adjusted according to condenser actual condition is developed at present, i.e., in original
On the basis of water ring vacuum pump system, low power water ring vacuum pump is increased, however still remains some problems.When summer
When, when the vacuum values of unit reach 25Kpa or more, the efficiency of unit is very low, recycles steam jet ejector at this time to remain true
Reciprocal of duty cycle has little significance, and such case energy consumption is more, causes the waste of energy consumption, energy conservation truly is not achieved.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of vacuum suitable for air cooling unit
Device, still using former method of operation energy consumption, energy-saving consumption-reducing when the vacuum values for solving the problems, such as unit are low vacuum state.
To achieve the above objectives, the technical solution adopted by the present invention is that:
Condenser, exhaust outlet are connected with solidifying gas main pipe；
First pipe-line system, the gas for being used to extract in the condenser and to make its vacuum values be maintained at first predetermined
Value, first pipe-line system includes sequentially connected steam jet ejector, pipe heat exchanger and the first water ring vacuum pump, the steaming
The side entrance of vapour injector is connected with the solidifying gas main pipe by the first branch, and the side entrance upstream of the steam jet ejector is equipped with
First pneumatic operated valve；
Second pipe-line system comprising the pipe heat exchanger and the first water ring vacuum pump, the pipe heat exchanger pass through
Second branch is connected with the first branch and tie point is located at the upstream of first pneumatic operated valve, and the second branch is equipped with
Second pneumatic operated valve；
As vacuum values >=25kPa in the condenser, first pneumatic operated valve is closed, and second pneumatic operated valve is opened
It opens, the second pipe-line system operation makes its vacuum values keep second predetermined value to extract the gas in the condenser.
Based on the above technical solution, the vacuum plant further includes the second water ring vacuum pump system, and described second
The entrance of water ring vacuum pump system is connected with the side outlet of the pipe heat exchanger.
Based on the above technical solution, the inlet of second water ring vacuum pump system be equipped with third pneumatic operated valve and
First isolating valve, when the first Water-ring vacuum pump operation, the third pneumatic operated valve and the first isolating valve are closed, and described second
Water ring vacuum pump system is closed, when first water ring vacuum pump, which does not run or breaks down, to be run, the third gas
Dynamic valve and the first isolating valve are opened, the second water ring vacuum pump system operation.
Based on the above technical solution, the one end of the solidifying gas main pipe far from the condenser and second water ring
The entrance of vacuum pump system is connected, and the solidifying gas main pipe is equipped with second close to one end of second water ring vacuum pump system
Isolating valve.
Based on the above technical solution, the first branch is equipped with pressure transmitter, the pressure transmitter position
In the upstream of the first branch and first branch tie point.
Based on the above technical solution, the steam jet ejector is equipped with adjustable nozzle, the steam injection
Device is equipped with side entrance, entrance and exit, and the side entrance of the steam jet ejector is connect with the first branch, the steam spray
The entrance of emitter is equipped with power steam regulating valve, and the power steam regulating valve is used for the actual measurement according to the pressure transmitter
Difference between pressure value and preset pressure value carries out pressure gearshift adjustment.
Based on the above technical solution, the entrance of the pipe heat exchanger is connected with cold water inlet, and the tubular type is changed
The outlet of hot device is connected with cold water outlet pipe, for will pass through the pipe heat exchanger the steam jet ejector power steam with
And the non-condensing gas of the condenser condenses into water.
Based on the above technical solution, when the observed pressure value of the pressure transmitter is less than 0.3Mpa, described the
One water ring vacuum pump is closed, and the third pneumatic operated valve and the first isolating valve are opened, the second water ring vacuum pump system starting.
Based on the above technical solution, when the temperature of the outlet of the pipe heat exchanger is greater than desired temperature,
First water ring vacuum pump is closed, and the third pneumatic operated valve and the first isolating valve are opened, second water ring vacuum pump system
Starting.
Based on the above technical solution, when the pressure of the outlet of the pipe heat exchanger is greater than the preset pressure value
When, first water ring vacuum pump is closed, and the third pneumatic operated valve and the first isolating valve are opened, second water ring vacuum pump system
System starting.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention provides a kind of vacuum plants suitable for air cooling unit, increase a connection first on the first leg
The second branch of branch and pipe heat exchanger, second branch is connect with the first branch and junction constitutes three-port structure, works as unit
Vacuum values >=25Kpa when, the first pneumatic operated valve positioned at first branch downstream is closed, the second pneumatic operated valve in second branch
It opens, steam jet ejector stops working at this time, the second pipeline that second branch, pipe heat exchanger and the first water ring vacuum pump are constituted
System operation, in this case, entire vacuum plant, which does not need consumption power steam, can reach maintenance and improve unit vacuum
Purpose, so that vacuum plant is realized maximized energy-saving consumption-reducing according to the mode of practical situation adjustment operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for being suitable for the vacuum plant of air cooling unit in the embodiment of the present invention.
In figure: 1- condenser, 2- coagulate gas main pipe, 3- steam jet ejector, 4- pipe heat exchanger, the first water ring vacuum pump of 5-,
The first pneumatic operated valve of 60-, the second pneumatic operated valve of 61-, 62- third pneumatic operated valve, the first isolating valve of 70-, the second isolating valve of 71-, 72- third
Isolating valve, the second water ring vacuum pump system of 8-, 9- power steam regulating valve, 10- pressure transmitter.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Shown in Figure 1, the embodiment of the invention provides a kind of vacuum plants suitable for air cooling unit, including condenser
1, the first pipe-line system and the second pipe-line system, the exhaust outlet of condenser 1 are connected with solidifying gas main pipe 2, coagulate gas main pipe 2 one end with
Condenser 1 is connected, and the other end is connected with the entrance of the second water ring vacuum pump system 8, wherein close to the second water ring in solidifying gas main pipe 2
One end of vacuum pump system 8 is equipped with the second isolating valve 71, and the second water ring vacuum pump system 8 can be by solidifying gas main pipe 2 to condenser 1
The operation directly vacuumized, but the application of this state is seldom, usually in the case where other states cannot all be run
Emergency use, therefore, usually the second isolating valve 71 is in close state.
Shown in Figure 1, the first pipe-line system is mainly used for the gas extracted in condenser 1 and is maintained at its vacuum values
First predetermined value guarantees that the vacuum degree in condenser 1 meets actual demand.Specifically, the first pipe-line system includes being sequentially connected
Steam jet ejector 3, pipe heat exchanger 4 and the first water ring vacuum pump 5, steam jet ejector 3 be equipped with side entrance, entrance and go out
Mouthful, the side entrance of steam jet ejector 3 is connected with solidifying gas main pipe 2 by the first branch, and the side entrance upstream of steam jet ejector 3 according to
Secondary to be equipped with the first pneumatic operated valve 60 and third isolating valve 72, the first pneumatic operated valve 60 and third isolating valve 72 are mainly used for steam jet ejector
The enabling or closing of 3 place pipeline sections.
Shown in Figure 1, the second pipe-line system includes pipe heat exchanger 4 and the first water ring vacuum pump 5, pipe heat exchanger 4
It is connected by second branch with the first branch and tie point is located at the upstream of the first pneumatic operated valve 60 and third isolating valve 72.Wherein,
Second branch is equipped with the second pneumatic operated valve 61, and the second pneumatic operated valve 61 is mainly used for the enabling or closing of second branch.When in the summer
When season, when vacuum values >=25kPa in condenser 1, vacuum pumping is carried out to unit by 3 component of steam jet ejector at this time
It takes and has little significance, cause unnecessary energy consumption, therefore when vacuum values >=25kPa in condenser 1, the first pneumatic operated valve 60 is closed,
Second pneumatic operated valve 61 is opened, and the operation of the second pipe-line system makes its vacuum values keep second to make a reservation for extract the gas in condenser 1
Value.Steam jet ejector 3 is in close state at this time, and entire vacuum plant, which does not need consumption power steam, can reach maintenance and mention
The purpose of high unit vacuum enables vacuum plant to realize that maximized energy conservation subtracts according to the mode of practical situation adjustment operation
Consumption.When other states, the second pneumatic operated valve 61 is in close state, and second branch is blocked.
Shown in Figure 1, vacuum plant further includes the second water ring vacuum pump system 8, and the second water ring vacuum pump system 8 includes
It is multiple that in water ring vacuum pump in parallel, the entrance of the second water ring vacuum pump system 8 is connected with the side outlet of pipe heat exchanger 4, and
The inlet of second water ring vacuum pump system 8 is equipped with third pneumatic operated valve 62 and the first isolating valve 70, when the first water ring vacuum pump 5 is transported
When row, third pneumatic operated valve 62 and the first isolating valve 70 are closed, and the second water ring vacuum pump system 8 is closed, when the first water ring vacuum pump 5
It does not run or breaks down when cannot run, third pneumatic operated valve 62 and the first isolating valve 70 are opened, the second water ring vacuum pump system 8
Operation.The whole power of second water ring vacuum pump system 8 is much larger than the first water ring vacuum pump 5, when the function of the first water ring vacuum pump 5
When rate can not meet actual demand, the second water ring vacuum pump system 8 can be opened, or break down in the first water ring vacuum pump 5
When, it can equally open the second water ring vacuum pump system 8.First water ring vacuum pump 5 and the second water ring vacuum pump system 8 there are energy
The normal operation for ensureing whole device is able to achieve the water ring vacuum pump that corresponding power is selected according to actual demand, also to play
Energy-saving effect.
Further, pressure transmitter 10 is additionally provided in the first branch, pressure transmitter 10 is located at the first branch and first
The upstream of branch tie point.Steam jet ejector 3 is equipped with adjustable nozzle, the side entrance of steam jet ejector 3 and the first branch
Connection, the entrance of steam jet ejector 3 is used to be passed through power steam and inlet upstream pipeline is equipped with power steam regulating valve 9.?
In practical application, power steam regulating valve 9 is according to the difference between the observed pressure value and preset pressure value of pressure transmitter 10
Pressure gearshift adjustment is carried out, the pressure oscillation of power steam is effectively inhibited.
Shown in Figure 1, pipe heat exchanger 4 includes the side entrance being provided thereon, side outlet, entrance and exit, and tubular type is changed
The entrance of hot device 4 is connected with cold water inlet, and the outlet of pipe heat exchanger 4 is connected with cold water outlet pipe, and cold water inlet goes out with cold water
The condensate system that water pipe is constituted is for will be by the power steam and condenser 1 of the steam jet ejector 3 of pipe heat exchanger 4
Non-condensing gas condenses into water.In addition, being equipped with steam trap in the lower section of pipe heat exchanger 4, the downstream line of steam trap is successively set
There are drain valve and tubing heat exchanger pneumatic operated valve, be finally connected to hot well, hot well is connected to condenser 1 simultaneously, constitutes circuit.
Further, when the observed pressure value of pressure transmitter 10 is less than 0.3Mpa, the power of the first water ring vacuum pump 5
It can not meet demand, the first water ring vacuum pump 5 is closed, and third pneumatic operated valve 62 and the first isolating valve 70 are opened, the second Water-ring vacuum
Pumping system 8 starts.
Further, when operator observes the temperature of the outlet of pipe heat exchanger 4 greater than desired temperature, first
Water ring vacuum pump 5 is closed, and third pneumatic operated valve 62 and the first isolating valve 70 are opened, the starting of the second water ring vacuum pump system 8.
Further, when operator observes the pressure of the outlet of pipe heat exchanger 4 greater than preset pressure value, first
Water ring vacuum pump 5 is closed, and third pneumatic operated valve 62 and the first isolating valve 70 are opened, the starting of the second water ring vacuum pump system 8.
It is shown in Figure 1, flowmeter and thermal resistance are additionally provided in the first branch, flowmeter is used for the flow observed in pipeline
Variation, thermal resistance are used for monitoring temperature, wherein flowmeter is located at the upstream of pressure transmitter 10, and thermal resistance is located at pressure inverting
Between device 10 and second branch, check (non-return) valve is additionally provided in the first branch, check (non-return) valve is located at the upstream of flowmeter.In addition, first
It is equipped with the 4th isolating valve among pneumatic operated valve 60 and second branch, the combination settings of pneumatic operated valve and isolating valve can further ensure pipe
The blocking in road.
The present invention is not only limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The product of kind form, however, make any variation in its shape or structure, it is all with identical or similar with the present invention
Technical solution, within its protection scope.
Claims (10)
1. a kind of vacuum plant suitable for air cooling unit, characterized in that it comprises:
Condenser (1), exhaust outlet are connected with solidifying gas main pipe (2)；
First pipe-line system, the gas for being used to extract in the condenser (1) simultaneously make its vacuum values be maintained at first predetermined value,
First pipe-line system includes sequentially connected steam jet ejector (3), pipe heat exchanger (4) and the first water ring vacuum pump (5),
The side entrance of the steam jet ejector (3) is connected with the solidifying gas main pipe (2) by the first branch, the steam jet ejector (3)
Side entrance upstream be equipped with the first pneumatic operated valve (60)；
Second pipe-line system comprising the pipe heat exchanger (4) and the first water ring vacuum pump (5), the pipe heat exchanger (4)
It is connected by second branch with the first branch and tie point is located at the upstream of first pneumatic operated valve (60), described second
Road is equipped with the second pneumatic operated valve (61)；
As vacuum values >=25kPa in the condenser (1), first pneumatic operated valve (60) is closed, second pneumatic operated valve
(61) it opens, the second pipe-line system operation keeps its vacuum values holding second pre- to extract the gas in the condenser (1)
Definite value.
2. a kind of vacuum plant suitable for air cooling unit as described in claim 1, it is characterised in that: the vacuum plant is also
Including the second water ring vacuum pump system (8), the entrance of second water ring vacuum pump system (8) and the pipe heat exchanger (4)
Side outlet be connected.
3. a kind of vacuum plant suitable for air cooling unit as claimed in claim 2, it is characterised in that: second water ring is true
The inlet of empty pumping system (8) is equipped with third pneumatic operated valve (62) and the first isolating valve (70), when first water ring vacuum pump (5)
When operation, the third pneumatic operated valve (62) and the first isolating valve (70) are closed, and second water ring vacuum pump system (8) is closed,
When first water ring vacuum pump (5), which does not run or breaks down, to be run, the third pneumatic operated valve (62) and first every
It is opened from valve (70), the second water ring vacuum pump system (8) operation.
4. a kind of vacuum plant suitable for air cooling unit as claimed in claim 3, it is characterised in that: the solidifying gas main pipe
(2) one end far from the condenser (1) is connected with the entrance of second water ring vacuum pump system (8), and the solidifying gas is female
It manages (2) and is equipped with the second isolating valve (71) close to one end of second water ring vacuum pump system (8).
5. a kind of vacuum plant suitable for air cooling unit as claimed in claim 4, it is characterised in that: in the first branch
Equipped with pressure transmitter (10), the pressure transmitter (10) is located at the upstream of the first branch and first branch tie point.
6. a kind of vacuum plant suitable for air cooling unit as described in claim 1, it is characterised in that: the steam jet ejector
(3) it is equipped with adjustable nozzle, the steam jet ejector (3) is equipped with side entrance, entrance and exit, the steam jet ejector
(3) side entrance is connect with the first branch, and the entrance of the steam jet ejector (3) is equipped with power steam regulating valve (9),
The power steam regulating valve (9) is used for according between the observed pressure value and preset pressure value of the pressure transmitter (10)
Difference carries out pressure gearshift adjustment.
7. a kind of vacuum plant suitable for air cooling unit as described in claim 1, it is characterised in that: the pipe heat exchanger
(4) entrance is connected with cold water inlet, and the outlet of the pipe heat exchanger (4) is connected with cold water outlet pipe, described for that will pass through
The power steam of the steam jet ejector (3) of pipe heat exchanger (4) and the non-condensing gas of the condenser (1) condense into
Water.
8. a kind of vacuum plant suitable for air cooling unit as claimed in claim 5, it is characterised in that: the pressure transmitter
(10) when observed pressure value is less than 0.3Mpa, first water ring vacuum pump (5) is closed, the third pneumatic operated valve (62) and the
One isolating valve (70) is opened, the second water ring vacuum pump system (8) starting.
9. a kind of vacuum plant suitable for air cooling unit as claimed in claim 5, it is characterised in that: when the pipe type heat transfer
When the temperature of the outlet of device (4) is greater than desired temperature, first water ring vacuum pump (5) is closed, the third pneumatic operated valve
(62) it is opened with the first isolating valve (70), the second water ring vacuum pump system (8) starting.
10. a kind of vacuum plant suitable for air cooling unit as claimed in claim 5, it is characterised in that: when the tubular type is changed
When the pressure of the outlet of hot device (4) is greater than the preset pressure value, first water ring vacuum pump (5) is closed, the third gas
Dynamic valve (62) and the first isolating valve (70) are opened, the second water ring vacuum pump system (8) starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287869.3A CN109443030A (en) | 2018-10-31 | 2018-10-31 | A kind of vacuum plant suitable for air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287869.3A CN109443030A (en) | 2018-10-31 | 2018-10-31 | A kind of vacuum plant suitable for air cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443030A true CN109443030A (en) | 2019-03-08 |
Family
ID=65549760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811287869.3A Pending CN109443030A (en) | 2018-10-31 | 2018-10-31 | A kind of vacuum plant suitable for air cooling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113467323A (en) * | 2021-07-22 | 2021-10-01 | 四川省天晟真空设备有限公司 | Vacuum baking oven control system and control method for different negative pressure values |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006055548A2 (en) * | 2004-11-15 | 2006-05-26 | Lev Group, Llc | Low energy vacuum distillation method and apparatus |
| CN203719452U (en) * | 2014-02-21 | 2014-07-16 | 程晋瑞 | Improved steam condenser vacuum system |
| CN106643204A (en) * | 2017-01-05 | 2017-05-10 | 陆明 | Three-stage switchable steam jetting and vacuumizing system low in steam consumption |
| CN107560451A (en) * | 2017-10-17 | 2018-01-09 | 武汉艾德沃泵阀有限公司 | A kind of energy-saving type vacuum device |
-
2018
- 2018-10-31 CN CN201811287869.3A patent/CN109443030A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006055548A2 (en) * | 2004-11-15 | 2006-05-26 | Lev Group, Llc | Low energy vacuum distillation method and apparatus |
| CN203719452U (en) * | 2014-02-21 | 2014-07-16 | 程晋瑞 | Improved steam condenser vacuum system |
| CN106643204A (en) * | 2017-01-05 | 2017-05-10 | 陆明 | Three-stage switchable steam jetting and vacuumizing system low in steam consumption |
| CN107560451A (en) * | 2017-10-17 | 2018-01-09 | 武汉艾德沃泵阀有限公司 | A kind of energy-saving type vacuum device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113467323A (en) * | 2021-07-22 | 2021-10-01 | 四川省天晟真空设备有限公司 | Vacuum baking oven control system and control method for different negative pressure values |
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Application publication date: 20190308 |
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