CN202814146U - Vacuum-pumping system of high pressure condenser and low pressure condenser of thermal power generating unit - Google Patents
Vacuum-pumping system of high pressure condenser and low pressure condenser of thermal power generating unit Download PDFInfo
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- CN202814146U CN202814146U CN 201220503064 CN201220503064U CN202814146U CN 202814146 U CN202814146 U CN 202814146U CN 201220503064 CN201220503064 CN 201220503064 CN 201220503064 U CN201220503064 U CN 201220503064U CN 202814146 U CN202814146 U CN 202814146U
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- pressure condenser
- low pressure
- vavuum pump
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Abstract
The utility model discloses a vacuum-pumping system of a high pressure condenser and a low pressure condenser of a thermal power generating unit. The vacuum-pumping system comprises a first vacuum pump, a second vacuum pump and a third vacuum pump, wherein the air pumping port of the first vacuum pump is connected with the high pressure condenser through a first air pumping pipeline; the air pumping port of the second vacuum pump is connected with the low pressure condenser through a second air pumping pipeline; and the air pumping port of the third vacuum pump is connected with the first air pumping pipeline through a first branch and is connected with the second air pumping pipeline through a second branch, a first valve device is installed on the first branch, and a second valve device is installed on the second branch. The vacuum-pumping system of the high pressure condenser and the low pressure condenser of the thermal power generating unit can safely guarantee and control the fact that non-condensed gas of the high pressure condenser and the low pressure condenser is reliably pumped away, thereby enabling condenser heat-exchange effects to achieve a designed ideal state.
Description
Technical field
The utility model relates to the steam power plant field, more particularly, relates to a kind of pumped vacuum systems of fired power generating unit high and low pressure condenser.
Background technology
Electric power is the important energy source of the national economic development, and thermal power generation is China and many countries main method of producing electric energy in the world.
In thermal power plant, condenser is a kind of steam-condensation Cheng Shui that steam turbine is discharged, and the heat exchanger of the vacuum of section's formation within it.Because the low pressure steam discharge volume of 600MW fired power generating unit is larger, needs the area of heat exchanger very large, and then need to arrange two series connection condensers.
But because the difference of cooling water temperature, the back pressure of two series connection condenser formation does not wait.The back pressure of the low temperature influent side of one of them condenser is lower, so be called the low pressure condenser; The back pressure of the water outlet side of another condenser is higher, so be called the high pressure condenser.
It is by the process of pumped vacuum systems with eliminatings such as the incoagulable gas in the condenser that condenser vacuumizes, to reduce the heat transfer effect that affects condenser.
Following content will be introduced the pumped vacuum systems of high and low pressure condenser of the prior art.Please referring to Fig. 1, Fig. 1 is the pumped vacuum systems structural representation of high and low pressure condenser of the prior art.
High and low pressure evacuation system for steam condenser of the prior art comprises the vavuum pump group that three vavuum pumps 01 consist of, each vavuum pump of vavuum pump group all is communicated with the gas outlet of female pipe 02 of bleeding, and the air inlet of female pipe of bleeding is communicated with the exhaust tube of high pressure condenser 03 and low pressure condenser 04 respectively.
Because the high-low pressure back pressure of condenser of steam turbine plant design is respectively 4.4kPa and 5.4kPa, pressure reduction is 1kPa, but pumped vacuum systems of the prior art is so that the difficult extraction of incondensable gas in the low-pressure side condenser, high and low pressure condenser pressure in actual motion does not have obvious difference, cause low-pressure side condenser heat transfer effect poor, substantially lose the operating characteristic of double pressure condenser, had a strong impact on the economy of unit.
Therefore, how can guarantee that the incondensable gas of high and low pressure condenser is reliably extracted out, thereby make the condenser heat transfer effect arrive the design ideal state, become those skilled in the art's important technological problems to be solved.
The utility model content
In view of this, the utility model provides a kind of pumped vacuum systems of fired power generating unit high and low pressure condenser, and its incondensable gas that can guarantee the high and low pressure condenser is reliably extracted out.
The pumped vacuum systems of a kind of fired power generating unit high and low pressure condenser that the utility model provides comprises:
The first vavuum pump, its bleeding point is connected with the high pressure condenser by the first exhaust pipe;
The second vavuum pump, its bleeding point is connected with the low pressure condenser by the second exhaust pipe;
The 3rd vavuum pump, its bleeding point is connected with described the first exhaust pipe by the first branch road, and be connected with described the second exhaust pipe by the second branch road, and described the first branch road is provided with the first valving, and described the second branch road is provided with the second valve door gear.
Preferably, described the first valving and described second valve door gear are the automatic valve device.
Preferably, described automatic valve device is pneumatic operated valve.
Preferably, described the first valving and described second valve door gear are Pneumatic vacuum dish valve.
Preferably, described the first valving and described second valve door gear are ball valve.
Preferably, be provided with successively the first non-return valve and the first dish valve along the flow path direction of bleeding on described the first exhaust pipe between described the first vavuum pump and described the first branch road.
Preferably, be provided with successively the second non-return valve and the second dish valve along the flow path direction of bleeding on described the second exhaust pipe between described the second vavuum pump and described the second branch road.
Preferably, the bleeding point of described the 3rd vavuum pump is connected with described the first branch road and described the second branch road by female pipe of bleeding, and described female pipe of bleeding upward is provided with the 3rd non-return valve and the 3rd dish valve successively along the flow path direction of bleeding.
The pumped vacuum systems of a kind of fired power generating unit high and low pressure condenser that the utility model provides comprises: the first vavuum pump, and its bleeding point is connected with the high pressure condenser by the first exhaust pipe; The second vavuum pump, its bleeding point is connected with the low pressure condenser by the second exhaust pipe; The 3rd vavuum pump, its bleeding point is connected with described the first exhaust pipe by the first branch road, and be connected with described the second exhaust pipe by the second branch road, and described the first branch road is provided with the first valving, and described the second branch road is provided with the second valve door gear.So arrange, the pumped vacuum systems of the fired power generating unit high and low pressure condenser that the utility model provides, the first vavuum pump can be used for the high pressure condenser is bled, the second vavuum pump can be used for the low pressure condenser is bled, when the incondensable gas in the low-pressure side condenser is difficult for extracting out, can open the second valve door gear on the second branch road, open simultaneously the 3rd vavuum pump, and then so that the 3rd vavuum pump can bleed to the low pressure condenser, so, so that the high and low pressure condenser pressure produce obvious difference.Equally, when the incondensable gas in the high pressure condenser is difficult for extracting out, can open the first valving on the first branch road, open simultaneously the 3rd vavuum pump, the 3rd vavuum pump can be bled to the high pressure condenser, and then so that the high and low pressure condenser pressure produces obvious difference.Therefore, the pumped vacuum systems of the fired power generating unit high and low pressure condenser that the utility model provides, its can safety guarantee the incondensable gas of regulation and control high and low pressure condenser reliably extracted out, thereby make the condenser heat transfer effect arrive the design ideal state.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the pumped vacuum systems structural representation of high and low pressure condenser of the prior art;
Fig. 2 is the pumped vacuum systems structural representation of high and low pressure condenser in the specific embodiment of the present utility model;
Wherein, among Fig. 1:
Vavuum pump-01, bleed female pipe 02, high pressure condenser 03, low pressure condenser 04;
Among Fig. 2:
The first vavuum pump-11, the first exhaust pipe-12, high pressure condenser-13, the second vavuum pump-14, the second exhaust pipe 15, low pressure condenser-16, the 3rd vavuum pump-17, the first branch road--the 18, second branch road-19, the first valving-20, second valve door gear-21, the first non-return valve-22, the first dish valve-23, female pipe-24 of bleeding.
The specific embodiment
The utility model provides a kind of pumped vacuum systems of fired power generating unit high and low pressure condenser, its can safety guarantee the incondensable gas of regulation and control high and low pressure condenser reliably extracted out.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 2, Fig. 2 is the pumped vacuum systems structural representation of high and low pressure condenser in the specific embodiment of the present utility model.
The pumped vacuum systems of fired power generating unit high and low pressure condenser provided in the present embodiment comprises:
The first vavuum pump 11, its bleeding point is connected with high pressure condenser 13 by the first exhaust pipe 12;
The second vavuum pump 14, its bleeding point is connected with low pressure condenser 16 by the second exhaust pipe 15;
The 3rd vavuum pump 17, its bleeding point is connected with the first exhaust pipe 12 by the first branch road 18, and be connected with the second exhaust pipe 15 by the second branch road 19, and the first branch road 18 is provided with the first valving 20, the second branch roads 19 and is provided with second valve door gear 21.
So arrange, fired power generating unit provided in the present embodiment is high, the pumped vacuum systems of low pressure condenser, the first vavuum pump 11 can be used for high pressure condenser 13 is bled, the second vavuum pump 14 can be used for low pressure condenser 16 is bled, when the incondensable gas in the low-pressure side condenser is difficult for extracting out, can open the second valve door gear 21 on the second branch road 19, open simultaneously the 3rd vavuum pump 17, and then the 3rd vavuum pump 17 and the second vavuum pump 14 can bleed to low pressure condenser 16 simultaneously, so, so that height, low pressure condenser 16 pressure produce obvious difference.Equally, when the incondensable gas in the high pressure condenser 13 is difficult for extracting out, can open the first valving 20 on the first branch road 18, open simultaneously the 3rd vavuum pump 17, the 3rd vavuum pump 17 and the first vavuum pump 11 can be bled to high pressure condenser 13 simultaneously, and then so that high and low pressure condenser 16 pressure produce obvious difference.Therefore, the pumped vacuum systems of the fired power generating unit high and low pressure condenser that this specific embodiment provides, it can regulate and control the pressure difference value of high and low pressure condenser neatly.
Need to prove, above-mentioned the first valving 20 and second valve door gear 21 can be the automatic valve device, such as, can be pneumatic operated valve, certainly can be automatic valve device or the manual valve device of other type, this specific embodiment is not done concrete restriction to the particular type of the first valving 20 and second valve door gear 21 yet.Above-mentioned pneumatic operated valve can be the Pneumatic vacuum butterfly valve, certainly, also can be the pneumatic operated valve of other type, such as, pneumatic ball valve etc.
In addition, mutually interfere when preventing that the first vavuum pump 11, the second vavuum pump 14 and the 3rd vavuum pump 17 from vacuumizing, such as, the first vavuum pump 11 is when vacuumizing, if the second vavuum pump 14 and the 3rd vavuum pump 17 are in halted state, gas may be drawn in the first vavuum pump 11 by the second vavuum pump 14 and the 3rd vavuum pump 17, and then affects the pumping efficiency of 11 pairs of condensers of the first vavuum pump.
Given this, the pumped vacuum systems of fired power generating unit high and low pressure condenser provided in the present embodiment is provided with the first non-return valve 22 and the first dish valve 23 successively along the flow path direction of bleeding on the first exhaust pipe 12 between the first vavuum pump 11 and described the first branch road 18.
So arrange, when the second vavuum pump 14 and 17 pairs of condensers of the 3rd vavuum pump are bled, can close the first non-return valve 22 and the first dish valve 23, and then when effectively having avoided the second vavuum pump 14 and 17 pairs of condensers of the 3rd vavuum pump to vacuumize, gas is inhaled into the problem of the second vavuum pump 14 and the 3rd vavuum pump 17 by the first vavuum pump 11.
Equally, also can be provided with successively the second non-return valve and the second butterfly valve along the flow path direction of bleeding on the second exhaust pipe 15 between the second vavuum pump 14 and the second branch road 19.
So arrange, when the first vavuum pump 11 and 17 pairs of condensers of the 3rd vavuum pump are bled, can close the second non-return valve and the second butterfly valve, and then when effectively having avoided the first vavuum pump 11 and 17 pairs of condensers of the 3rd vavuum pump to vacuumize, gas is inhaled into the problem of the first vavuum pump 11 and the 3rd vavuum pump 17 by the second vavuum pump 14.
Further, the bleeding point of the 3rd vavuum pump 17 is connected with the first branch road 18 and the second branch road 19 by the female pipe 24 of bleeding, and the edge flow path direction of bleeding is provided with the 3rd non-return valve and the 3rd dish valve successively on female pipe 24 of bleeding.
So arrange, when not needing to use the 3rd vavuum pump 17, can close the 3rd non-return valve and the 3rd dish valve, and then avoid the second vavuum pump 14 Hes | or the first vavuum pump 11 is when vacuumizing, and gas is drawn into the second vavuum pump 14 Hes by the 3rd vavuum pump 17 | or the problem of the 3rd vavuum pump 17.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the pumped vacuum systems of a fired power generating unit high and low pressure condenser is characterized in that, comprising:
The first vavuum pump, its bleeding point is connected with the high pressure condenser by the first exhaust pipe;
The second vavuum pump, its bleeding point is connected with the low pressure condenser by the second exhaust pipe;
The 3rd vavuum pump, its bleeding point is connected with described the first exhaust pipe by the first branch road, and be connected with described the second exhaust pipe by the second branch road, and described the first branch road is provided with the first valving, and described the second branch road is provided with the second valve door gear.
2. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 1 is characterized in that, described the first valving and described second valve door gear are the automatic valve device.
3. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 2 is characterized in that, described automatic valve device is pneumatic operated valve.
4. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 3 is characterized in that, described the first valving and described second valve door gear are Pneumatic vacuum dish valve.
5. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 1 is characterized in that, described the first valving and described second valve door gear are ball valve.
6. such as the pumped vacuum systems of each described fired power generating unit high and low pressure condenser of claim 1-5, it is characterized in that, be provided with successively the first non-return valve and the first dish valve along the flow path direction of bleeding on described the first exhaust pipe between described the first vavuum pump and described the first branch road.
7. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 6 is characterized in that, is provided with successively the second non-return valve and the second dish valve along the flow path direction of bleeding on described the second exhaust pipe between described the second vavuum pump and described the second branch road.
8. the pumped vacuum systems of fired power generating unit high and low pressure condenser as claimed in claim 7, it is characterized in that, the bleeding point of described the 3rd vavuum pump is connected with described the first branch road and described the second branch road by female pipe of bleeding, and described female pipe of bleeding upward is provided with the 3rd non-return valve and the 3rd dish valve successively along the flow path direction of bleeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220503064 CN202814146U (en) | 2012-09-27 | 2012-09-27 | Vacuum-pumping system of high pressure condenser and low pressure condenser of thermal power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220503064 CN202814146U (en) | 2012-09-27 | 2012-09-27 | Vacuum-pumping system of high pressure condenser and low pressure condenser of thermal power generating unit |
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| Publication Number | Publication Date |
|---|---|
| CN202814146U true CN202814146U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220503064 Expired - Lifetime CN202814146U (en) | 2012-09-27 | 2012-09-27 | Vacuum-pumping system of high pressure condenser and low pressure condenser of thermal power generating unit |
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| Country | Link |
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| CN (1) | CN202814146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990427A (en) * | 2015-07-30 | 2015-10-21 | 大唐桂冠合山发电有限公司 | System improving vacuum-pumping efficiency of double-backpressure condenser |
-
2012
- 2012-09-27 CN CN 201220503064 patent/CN202814146U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990427A (en) * | 2015-07-30 | 2015-10-21 | 大唐桂冠合山发电有限公司 | System improving vacuum-pumping efficiency of double-backpressure condenser |
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| GR01 | Patent grant | ||
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Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |